JP3638184B2 - Fire alarm system and relay for apartment house - Google Patents

Fire alarm system and relay for apartment house Download PDF

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Publication number
JP3638184B2
JP3638184B2 JP29625396A JP29625396A JP3638184B2 JP 3638184 B2 JP3638184 B2 JP 3638184B2 JP 29625396 A JP29625396 A JP 29625396A JP 29625396 A JP29625396 A JP 29625396A JP 3638184 B2 JP3638184 B2 JP 3638184B2
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Prior art keywords
receiver
signal
fire
repeater
dwelling unit
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JP29625396A
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JPH10143776A (en
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諭 小泉
清明 小山
好章 不破
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Hochiki Corp
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Hochiki Corp
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  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Alarm Systems (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、住戸毎に火災感知器、中継器、住戸用受信機、及びインターホン設備を設けて個別監視し、中央の管理人室等に住棟用受信機を設けて集中監視する共同住宅用火災報知システムに関する。
【0002】
【従来の技術】
従来の共同住宅用の火災報知システムにあっては、住戸に設けられた火災感知器が発報すると、住戸内に設置している住宅情報盤(住戸用受信機)やドアホンで警報報知が行われる。同時に住宅情報盤やドアホンを介し直ちに管理人室等の中央に設置された防災情報を集中監視する住棟用受信機に発報信号が送られる。発報信号を受けた住棟用受信機は、例えば出火階及び直上階に設置されている地区ベルを鳴動して火災発生を報知する。
【0003】
また、最近にあっては、地区ベルに代えて音声による警報システムが求められるようになって来ている。例えば特開平4−350800号のシステムにあっては、火災発生時に管理人室等に設置した住棟用受信機からの発報移報信号の送出による制御で、出火階及び直上階等の警報報知を必要とする住戸に対し、玄関先に設置しているドアホン子器のスピーカを住棟用受信機からの音声警報用の信号線に切り替え「ウーウー、火災が発生しました」等の音声警報を出させている。
【0004】
同時に住棟用受信機は、警報報知を必要とする各住戸内に設置している住宅情報盤に対しても発報移報信号を送り、住戸内でも警報報知を行わせる。
【0005】
【発明が解決しようとする課題】
しかしながら、このような従来の共同住宅用火災報知システムにあっては、通常の住宅情報盤は、各住戸の電源で動作しているため、火災感知器が住宅情報盤に接続され電源を供給されて動作するようなシステムにあっては、住戸が空きになっている等で住戸の電源が切られている場合には住宅情報盤及び火災感知器は電源の供給を受けることができず、その住戸での火災は全く監視できないという問題があった。
【0006】
本発明は、このような従来の問題点に鑑みてなされたもので、住戸側で電源が切られていても確実に火災が監視できるようにした共同住宅用火災報知システムを提供することを目的とする。
【0007】
【課題を解決するための手段】
この目的を達成するため本発明は次のように構成する。まず本発明は、各住戸に、火災を検出している間だけ発報信号を出力する自己復旧型の火災感知器、火災感知器を感知器回線を介して接続する中継器、及び中継器が火災感知器の発報を受信した際に出力する作動信号を受信して火災警報を行うと共に住戸からの電源供給を受けて動作する住戸用受信機を少なくとも設け、管理人室等の中央に中継器からの火災確定信号を受信して火災警報を行う住棟用受信機を設け、各住戸の火災感知器及び中継器を住棟用受信機からの電源供給により動作するように接続した共同住宅用火災報知システムを対象とする。
【0008】
このような共同住宅用火災報知システムとして本発明にあっては、各住戸の住戸用受信機に、通常時に中継器に有電圧信号を出力し、中継器からの作動信号を受信してタイマを起動してタイムアップした場合及び住戸用受信機への電源供給が停止した場合の各々について、有電圧信号を遮断する受信機回路部を設ける。また中継器には、火災感知器の発報を受信した際に、住戸用受信機からの有電圧信号を検出している場合には住戸用受信機に作動信号を出力し、その後、住戸用受信機からの有電圧信号の遮断を検出した場合には火災確定信号を住棟用受信機に出力し、また火災感知器の発報を受信した際に、住戸用受信機からの有電圧信号の遮断を検出している場合には、直ちに火災確定信号を住棟用受信機に出力して住棟用受信機で火災警報を行わせる中継器回路部を設ける。
【0009】
このように本発明の共同住宅用火災報知システムは、住戸用受信機から中継器への火災確定の移報信号に有電圧信号を使用し、有電圧信号の遮断を中継器で検出した場合に、住戸用受信機から火災確定の移報が行われたと判断しているため、住戸用受信機の停電時による有電圧信号の遮断時にも、火災感知器の発報を受信した際に直ちに火災確定信号を住棟用受信機に出力して住棟用受信機で火災警報を行なわせることができ、住戸側が停電しても住棟用受信機による直接的な監視ができるため、高い信頼性が得られる。
【0010】
住戸用受信機の受信機回路部は、2〜5分程度の時間設定が行われたタイマの起動中に火災確認スイッチの操作を検出した場合は、タイマ設定時間に関係なく直ちに中継器に出力している有電圧信号を遮断して火災確定信号を住棟用受信機に出力させる。即ち、火災確認のために火災確定出力をタイマで遅延させているが、遅延中に居住者による火災確認スイッチの操作があれば、火災確定信号の出力を優先させる。
【0011】
また住戸用受信機の受信機回路部は、タイマの起動中に復旧スイッチの操作を検出した場合は、中継器からの作動信号を受信していないことを条件に復旧処理を行う。このため、火災感知器の誤報により住戸用受信機で火災警報が出された場合でも、火災確定信号を中継器から出力させるまでのタイマ設定時間の間であれば、住戸用受信機側でのリセットができ、火災感知器が誤って発報した場合の中央側および周辺住戸に対する警報報知を未然に防止できる。
【0012】
住戸用受信機の受信機回路部は、具体的には信号線を介して中継器に設けたフォトカプラの発光素子に有電圧信号を出力して発光駆動する。そして、タイマがタイムアップした場合、タイマの起動中に火災確認スイッチの操作を検出した場合及び住戸用受信機への電源供給が停止した場合の各々について、有電圧信号を遮断してフォトカプラの発光駆動を停止する。このため中継器の中継器回路部は、フォトカプラの受光素子の受光出力がなくなったことで、有電圧信号の遮断を検出する。
【0013】
更に本発明は、自己復旧型の火災感知器を使用していることから、住戸用受信機の受信機回路部は、中継器からの作動信号を所定時間、例えば10秒継続して受信した場合に作動信号を自己保持すると共に中継器に保持信号を出力し、一方、中継器からの作動信号を所定時間、例えば10秒継続して受信できなかった場合は作動信号が断たれた時に復旧処理を行う。
【0014】
また中継器の中継器回路部は、火災感知器からの発報信号を受信した際に、住戸用受信機からの有電圧信号を検出している場合は住棟用受信機に対する火災確定信号の出力許容状態を作り出し、この出力許容状態で住戸用受信機からの保持信号を受信して出力許容状態を保持し、更に、この出力許容状態を保持した状態で住戸用受信機からの有電圧信号の遮断を検出した場合に、住棟用受信機に火災確定信号を出力する。
【0015】
続いて中継器の中継器回路部は、住棟用受信機の火災受信に基づいて出力される確認信号(火災代表信号)を受信した場合に、住戸用受信機からの保持信号の入力を遮断すると共に、火災確定信号の出力許容状態の保持を継続し、更に住戸用受信機への作動信号の出力を継続して保持する。
また中継器の中継器回路部は、住棟用受信機からの確認信号が断たれた際に、火災確定信号の出力許容状態の保持および住戸用受信機への作動信号の保持の各々を解除する。このため、中継器の保持解除は、住棟用受信機からしかできず、したがって火災感知器が復旧しても中継器の保持は解除されないため、住戸側で火災発報があった後の現場調査等が確実にできる。
【0016】
更に、住戸用受信機の受信機回路部は、中継器に保持信号を出力した後に住棟用受信機からの確認信号に基づく中継器側での保持信号の遮断を検出すると、中継器からの作動信号が断たれた際に初期状態に復旧する。このため住戸用受信機は住棟用受信機から復旧することができ、不在住戸の誤報等に対し住戸内に入らなくとも初期状態に復旧できる。
【0017】
また本発明は、住戸用受信機に対しドアホン子器として設けている戸外表示器の火災灯を制御する。即ち、中継器の中継器回路部は、住戸用受信機から保持信号を受信すると、住戸用受信機の戸外表示器に電源供給兼信号線を介して通常時供給している所定の電源電圧とは異なる電源電圧となる火災信号を出力する。戸外表示器は、通常、電源供給兼信号線によって所定の電源電圧を中継器から受けて動作しており、通常時の電源電圧とは異なる電源電圧の火災信号を検出すると、火災灯を点滅する。
【0018】
また本発明は、各住戸に設けられ、住棟用受信機からの電源供給を受けて動作する自己復旧型の火災感知器を感知器回線を介して接続し、火災感知器の発報を受信した際に作動信号を住戸からの電源供給を受けて動作する住戸用受信機に出力して火災警報を行わせ、更に管理人室等の中央に設けられた住棟用受信機に火災確定信号を出力して火災警報を行わせ、住棟用受信機からの電源供給により動作するように接続した共同住宅用火災報知システムの中継器を提供する。
【0019】
このような中継器として本発明にあっては、火災感知器の発報を受信した際に、住戸用受信機からの有電圧信号を検出している場合には住戸用受信機に作動信号を出力し、その後に住戸用受信機からの有電圧信号の遮断を検出した場合には火災確定信号を住棟用受信機に出力し、また火災感知器の発報を受信した際に、住戸用受信機からの有電圧信号の遮断を検出している場合には、直ちに火災確定信号を住棟用受信機に出力して住棟用受信機で火災警報を行わせる中継器回路部を設けたことを特徴とする。
【0020】
この中継器の中継器回路部は、火災感知器からの発報信号を受信した際に、住戸用受信機からの有電圧信号を検出している場合は住棟用受信機に対する火災確定信号の出力許容状態を作り出し、この出力許容状態で住戸用受信機からの保持信号を受信して火災確定信号の出力許容状態を保持し、この出力許容状態を保持した状態で住戸用受信機からの有電圧信号の遮断を検出した場合に、住棟用受信機に火災確定信号を出力する。
【0021】
続いて中継器回路部は、住棟用受信機の火災受信に基づいて出力される確認信号(火災代表信号)を受信した場合に、住戸用受信機からの保持信号を遮断すると共に、火災確定信号の出力許容状態を継続保持し、更に住戸用受信機への作動信号を継続保持する。
【0022】
【発明の実施の形態】
<目 次>
1.システム構成
2.中継器と住戸用受信機
3.住棟用受信機
4.システム動作
5.断線監視
1.システム構成
図1は本発明の共同住宅用火災報知システムのシステム構成図である。図1において、管理人室などの中央側には、各住戸を集中監視するための住棟用受信機1が設置されている。一方、各住戸A1〜An側には、例えば住戸A1に代表して示すように、中継器2a、住戸用受信機3a及び戸外表示器4aが設けられている。
【0023】
中継器2aからは感知器回線6aが引き出され、1または複数の火災感知器5aを接続している。火災感知器5aは自己復旧型の火災感知器である。即ち自己復旧型の火災感知器5aは、火災による例えば煙を検出している間、感知器回線6aに発報信号としての発報電流を流し、火災による煙を検出できなくなると感知器自身で復旧して発報電流を停止する。
【0024】
住戸用受信機3aは火災感知器5aが発報した際に、中継器2aから感知器作動信号(以下、単に「作動信号」という)E1を受けて警報表示を行う。この作動信号E1の受信に対し、住戸用受信機3aには蓄積用の第1タイマを設けており、例えば10秒間継続して作動信号E1が得られたときに作動信号を保持し、更に中継器2aに対し保持信号E2を出力し、中継器2a側についても保持動作を行わせる。
【0025】
また住戸用受信機3aは、中継器2aからの作動信号E1の受信と同時に2〜5分の時間設定をもつ第2タイマを起動し、第2タイマの起動中に復旧スイッチが操作されなければ、中継器2aに出力している有電圧信号E2を遮断して火災確定を通知する。また第2タイマの起動中に住戸用受信機3aに設けている火災確定スイッチを操作した場合には、第2タイマに関係なく有電圧信号E2を遮断して火災確定を中継器2aに通知する。
【0026】
中継器2aは、火災感知器5aの発報受信を行い、住戸用受信機3aへ作動信号E1を出力した後、住戸用受信機3aから保持信号E2が得られ、続いて有電圧信号E3の遮断による火災確定を検出すると、住棟用受信機1に対し火災確定信号E4を出力する。この火災確定信号E4に対し住棟用受信機1側で火災受信が行われると、確認信号E5が中継器2aに返送される。
【0027】
住棟用受信機1からの確認信号E5を受信した中継器2aは、住戸用受信機3aからの保持信号E2及び有電圧信号E3の遮断に基づく火災確定信号出力の保持状態を継続できるように自己保持し、住戸用受信機3aからの保持信号E2による保持状態を切り離す。
このように中継器2aにおける火災確定信号の出力状態の保持が、住戸用受信機3aからの保持信号E2に基づく保持から住棟用受信機1から受信した確認信号E5に基づく保持に切り替わることで、住戸用受信機3aによる中継器2aの復旧動作を禁止し、中継器2aの復旧動作は住棟用受信機1からの確認信号E4の遮断によってのみできるように切り替える。
【0028】
このため中継器2aから住棟用受信機1に火災確定信号E4が出力されて住棟用受信機1で火災警報表示が行われた後は、中継器2aの復旧は住棟用受信機1からしかできず、住戸用受信機3aによって居住者が復旧処理を行ってしまうことを防止し、例えば火災感知器5aが誤報により発報した場合などの発報住戸の調査などを容易に行うことができる。
【0029】
戸外表示器4aは中継器2aからの火災信号E8を受けて、内蔵している火災灯を点滅する。中継器2aからの火災信号E8は、住戸用受信機3aから保持信号E2を受けた際の保持動作に伴って出力される。
ここで住棟用受信機1と各住戸A1〜Anとの間は、電源線8、火報信号線9、確認信号線10、制御信号線11及び音声警報信号線12で接続されている。即ち、住棟用受信機1からの電源線8には住戸A1〜An側の中継器2a〜2nが接続されており、中継器2a〜2nは住戸からの電源供給ではなく中央側の住棟用受信機1からの電源供給で動作している。
【0030】
このため、住戸側に停電があっても中継器2a〜2nは正常に動作し、且つ感知器回線6a〜6nに接続している自己復旧型の火災感知器5a〜5nによる火災監視が正常にできる。火報信号線9は中継器2a〜2nから出力される火災確定信号E4を住棟用受信機1に送る。確認信号線10は住棟用受信機1で中継器2a〜2nのいずれかからの火災確定信号E4を受信した際の確認信号E5を中継器側に出力する。この確認信号E5としては、具体的には、住棟用受信機1における火災代表信号を使用する。
【0031】
更に本発明の火災報知システムにあっては、住戸用受信機3a〜3n及び戸外表示器4a〜4nにインターホン用のスピーカが設けられていることから、このスピーカを使用して住棟用受信機1から火災受信に対する音声警報を行うようにしている。
住戸側における音声警報の出し方は、例えば出火階とその直上階について音声警報を行う。また住戸用受信機3a〜3nと戸外表示器4a〜4nからの音声警報の出し方としては、出火住戸については住戸用受信機と戸外表示器の両方から音声警報を出し、他の住戸については住戸用受信機のみから音声警報を出す。もちろん、音声警報を行う住戸の形態は必要に応じて適宜に定めることができる。
【0032】
このような住戸側に対する音声警報のため、住棟用受信機1から音声警報の出力先を制御する制御信号線11が引き出されている。制御信号線11は、階別といった警戒区域毎に引き出される。図1は住戸A1〜Anを同一階とした場合を例にとっており、制御信号E6を出力して制御する。
また音声警報信号線12が住戸A1〜Anの住戸用受信機3a〜3n及び戸外表示器4a〜4nに接続されて音声警報信号E7を供給しており、制御信号線11による制御信号E6aに基づいて各スピーカに対する音声警報信号線12の切替接続が行われ、音声信号に基づいた音声メッセージ例えば「ウーウー、火事です、火事です。1階で火災が発生しました。安全を確認して避難してください。」等の警報メッセージが出力される。
【0033】
更に住戸A1〜Anに設けた中継器2a〜2nの間には、断線検出渡り線13が順次接続されている。即ち、中継器2a〜2nのそれぞれには火災感知器5a〜5nを接続した感知器回線6a〜6nの断線検出回路が設けられており、感知器回線の断線を検出すると、後段の中継器に対し断線検出渡り線13を介して断線検出信号を出力する。
【0034】
この感知器回線の断線を検出した中継器2aからの断線検出信号は、断線検出渡り線13を介して最終段の中継器2nに通知され、断線検出信号を受信した最終段の中継器2nの断線検出回路は、住棟用受信機1からの火報信号線9に接続している断線検出用の終端抵抗を切り離して疑似的な断線状態を作り出すことで、住棟用受信機1に対し中継器側での感知器回線の断線を通知できるようにしている。
【0035】
次に図1の本発明による火災報知システムの詳細を、図2、図3及び図4を参照して説明する。
2.中継器と住戸用受信機
図2は図1の住戸A1に設けた中継器2a、住戸用受信機3a及び戸外表示器4aの具体的な実施形態である。
【0036】
中継器2aからは感知器回線6aが引き出され、感知器回線6aに対し自己復旧型の火災感知器5aを並列的に接続している。自己復旧型の火災感知器5a,5aは、火災による例えば煙などを検出すると、感知器回線6a間を低インピーダンスに短絡し、発報電流を流す。感知器回線6aは中継器2aに設けた受信回路14に接続されており、火災感知器5aの発報により発報電流が流れると、受信回路14に設けている受信リレーLを作動する。
【0037】
感知器回線6aに対する電源供給は、住棟用受信機1からの電源線8を定電圧回路16及び保持リレー回路15を介して接続することで行っている。また感知器回線6aの断線検出のため、最終端の火災感知器5aには断線検出用の終端抵抗7が接続されており、感知器回線6a及び終端抵抗7を介して流れる微弱な電流を断線検出回路22で監視し、断線を検出するとリレーDを作動する。この断線検出については後の説明で更に明らかにされる。
【0038】
火災感知器5aの発報により受信回路14の受信リレーLが作動すると、そのリレー接点lが閉じ、住戸用受信機3aに作動信号E1を出力する。また受信回路14の受信リレーLの作動と同時に保持リレー回路15の保持リレーMも作動し、そのリレー接点m1,m2を閉じ、火災確定信号の出力許容状態及び作動信号の保持許容状態を作り出す。
【0039】
住戸用受信機3aには中継器2aからの作動信号E1に対応して受信回路30が設けられ、作動信号E1を受けると受信リレーRを作動する。受信リレーRの作動は制御部32で検出され、火災警報を行う。この火災警報は表示部38の火災灯を点滅し、同時に音声合成回路52を起動して増幅器54により音声信号を増幅し、スピーカ56から例えば「感知器が発報しました。確認してください。誤報の場合は復旧スイッチを押してください。」といった音声メッセージを出力させる。
【0040】
また受信リレーRの作動を検出すると、制御部32は第1タイマ34と第2タイマ36を起動する。第1タイマ34は例えば10秒間の時間設定が行われた蓄積タイマであり、第1タイマ34で設定された10秒間継続して受信リレーRの作動状態が得られると、制御部32は、作動信号E1の受信状態を保持すると共に、保持リレーHを作動し、そのリレー接点hを閉じて、中継器2aに対し保持信号E2を出力する。
【0041】
尚、制御部32は、第1タイマ34で設定された10秒間継続して受信リレーRの作動状態が得られなかった場合には、作動信号E1が断たれ受信リレーRが作動しなくなった時点で、第1タイマ34、第2タイマ36のクリアも含め、住戸用受信機3の各回路部を初期状態に復旧させる。
中継器2aに対する保持信号E2の信号線は、通常時は抵抗48で終端されており、リレー接点hを介して抵抗48にフォトカプラ46のフォトダイオードを並列接続している。このため定常監視状態にあっては、保持信号E2はHレベルになっている。この状態で制御部32が保持リレーHを作動してリレー接点hを閉じると、フォトカプラ46のフォトダイオードの並列接続により保持信号E2はLレベルに立ち下がり、これが保持信号E2として中継器2aに出力される。
【0042】
またリレー接点hを閉じることで中継器2a側からの電源供給によりフォトカプラ46のフォトダイオードが発光駆動され、フォトトランジスタのオンにより制御部32に対するフォトカプラ46の出力がLレベルからHレベルに立ち上がり、これによって制御部32は中継器2aに対する保持信号E2の出力を認識することができる。
【0043】
制御部32は、第2タイマ36が作動信号E1の受信による起動から予め設定した2〜5分の範囲内の所定時間でタイムアップすると、火災確定リレーKを作動し、そのリレー接点kを開き、中継器2aに対し有電圧信号E3の遮断出力を行う。中継器2aに対する有電圧信号E3は、通常時、住戸用受信機3aの電源部62からの電源電圧+12Vであり、火災確定リレーKが作動してリレー接点kが開くと、有電圧信号E3は無電圧に立ち下がる。
【0044】
このような有電圧信号E3の遮断により、中継器2aに対し住戸用受信機3aから火災確定を通知する。火災確定を示す有電圧信号E3の遮断は、制御部32に設けている火災確定スイッチ40を操作した場合にも行われる。即ち、第2タイマ36の起動中に火災確定スイッチ40をオン操作すると、制御部32は、このオン操作を検出して直ちに火災確定リレーTを作動してリレー接点tを開き、中継器2aに対する有電圧信号E3を遮断して、同様に火災確定を通知する。
【0045】
住戸用受信機3aの制御部32には、火災確定スイッチ40に加えて更に、復旧スイッチ42と音響停止スイッチ44が設けられている。住戸用受信機3aで作動信号E1を受信して火災警報が行われた際に、第2タイマ36がタイムアップする前に復旧スイッチ42をオン操作すると、作動信号E1を受信していないこと、即ち、受信回路30の受信リレーRの受信作動が行われていないことを条件に、直ちに或いは第2タイマ36のタイムアップ時に、住戸用受信機3aの各回路部を初期状態に復旧させる。
【0046】
これに対し復旧スイッチ42をオン操作しても、受信リレーRの受信作動が行われている場合には、復旧スイッチ42の操作を無効とし、火災確定リレーKの作動でそのリレー接点kを開いて中継器2aに対する有電圧信号E3を遮断して、火災確定を通知する。更に音響停止スイッチ44は、住戸用受信機3aの火災警報中にオン操作することでスピーカ56からの音声メッセージを停止することができる。
【0047】
住戸用受信機3aからの第1タイマ34のタイムアップ時に出力される保持信号E2に対し、中継器2aには保持回路20が設けられている。保持回路20はリレーFのリレー接点f2を介して住戸用受信機3aからの保持信号E2を受け、保持信号E2がLレベルとなったときに動作して、保持リレー回路15に設けている保持リレーMの作動状態を作り出す。
【0048】
即ち、住戸用受信機2aから保持信号E2を受けた後に火災感知器5aが復旧して、これに伴い受信回路14の受信リレーLが復旧しても、保持リレー回路15の保持リレーMの作動状態を継続的に保持する状態を作り出す。また保持回路20は住戸用受信機3aから保持信号E2を受けた際に、戸外表示器4aに対し火災信号E8を出力して火災灯66の点滅を行わせる。火災信号E8の出力は、通常時の電源電圧+12Vをより高い+24Vに切り替えることで行う。
【0049】
中継器2aは、保持信号E2に基づく出力許容状態の保持状態で住戸用受信機2aから出力されている有電圧信号E3の遮断による火災確定を検出すると、住棟用受信機に対し火災確定信号E4を出力する。具体的には、住戸用受信機3aから有電圧信号E3はフォトカプラ18のフォトダイオードに入力されており、通常時は有電圧信号E3によりフォトダイオードの発光駆動が行われ、フォトトランジスタのオンによりフォトカプラ18のインバータ25への出力はLレベルとなっている。
【0050】
このため、インバータ25の出力は、Hレベルであるため、保持リレーMの作動によりリレー接点m2は既に閉じられて出力許容状態となっているものの、火災確定移報リレーSは非作動状態となっている。住戸用受信機3aからの有電圧信号E3の遮断により火災確定の通知を受けると、フォトカプラ18のフォトダイオードの発光が停止してフォトトランジスタがオフとなり、インバータ25に対する入力がLレベルからHレベルに立ち上がる。
【0051】
このためインバータ25の出力がHレベルからLレベルに変化し、リレー接点m2が閉じられて出力許容状態となっていることから、火災確定移報リレーSに電流が流れ、作動する。このため、そのリレー接点s1が閉じ、住棟用受信機1に対する火報信号線9をLレベルに引き込んで火災確定信号E4を出力する。中継器2aから住棟用受信機1に対する火災確定信号E4の送出に対し、住棟用受信機1にあっては後の説明で明らかにするように、警報受信を行うと確認信号E5を返送する。
【0052】
この確認信号E5としては、住棟用受信機1における火災代表信号の出力となる。住棟用受信機1から確認信号E5を受けた中継器2aは、そのとき火災確定移報リレーSの作動により閉じているリレー接点s2を介して確認リレーFを作動し、住戸用受信機3aに対する作動信号E1の信号回線側に設けたリレー接点f1を閉じると共に、住戸用受信機3aからの保持信号E2の入力回路に設けているリレー接点f2を開く。
【0053】
リレー接点f1が閉じることで、このとき保持リレーMのリレー接点m1は既に閉じて作動信号E1の保持状態にあることから、リレー接点f1とリレー接点m1の直列接続回路が形成され、住戸用受信機3aに対し固定的に作動信号E1の出力を保持した状態が作り出される。このため住棟用受信機1から確認信号E5を受けた後に、火災感知器5aの復旧で受信リレーLが非作動となってリレー接点lが開いても、住戸用受信機3aに対する作動信号E1は継続的に出力される。
【0054】
またリレー接点f2が開くことで住戸用受信機3aからの保持信号E2の入力が切り離され、保持回路20は住棟用受信機からの確認信号E5による保持状態に切り替わる。またリレー接点f2が開くと、住戸用受信機3aの保持信号E2の出力回路部に設けているフォトカプラ46のフォトダイオードの発光駆動が停止し、フォトトランジスタがオフすることで制御部32に対するフォトカプラ46の出力がHレベルからLレベルに立ち下がる。
【0055】
これによって制御部32は、中継器2aが住棟用受信機1からの確認信号E5で火災確定出力の保持状態に切り替わったことを認識できる。このフォトカプラ46からのLレベル出力を認識した制御部32は、その後、中継器2aが住棟用受信機1からの確認信号E5の遮断により復旧されて、リレーFのリレー接点f1が開いたときの作動信号E1の遮断による受信リレーRの復旧を受けて初期状態に復旧することができる状態となる。
【0056】
次に戸外表示器4aを説明する。戸外表示器4aは、通常時、火災信号E8を受信するための電源供給兼信号線を介して中継器2aの定電圧回路16が出力する+12Vの供給を受けて動作している。戸外表示器4aには中継器2aから出力される火災信号E8の検出回路64が設けられる。通常時、検出回路64に設けたリレーは非作動であるため、火災灯66は消灯しており、またリレー接点eも図示のように開いている。
【0057】
中継器2aで住戸用受信機3aからの保持信号E2を受けて、保持回路20において保持動作が行われると、戸外表示器4aに対する供給電圧を+12Vから火災信号E8となる+24Vに切り替える。検出回路64は、この供給電圧+24Vを検出してリレーを作動し、火災灯66を点滅させると同時にリレー接点eを閉じる。
【0058】
次に住戸用受信機3a及び戸外表示器4aにおける住棟用受信機1からの音声警報の出力制御を説明する。住戸用受信機3a及び戸外表示器4aには音声出力制御用のリレーBが設けられている。リレーBのそれぞれは、住棟用受信機1からの制御信号E6aにより作動される。即ち、住戸用受信機3aのリレーBはフォトカプラ60を介して制御信号6aを受けて作動し、そのリレー接点bを開いてスピーカ切替リレーGを非作動とし、切替リレー接点gをトランス58を備えた音声警報信号線12側に切り替える。
【0059】
また戸外表示器4aにあっては、中継器2aからの火災信号E8に基づいてリレー接点eが閉じた状態で制御信号E6aによりリレーBを作動して、リレー接点b1をトランス72を備えた音声警報信号線12側に切り替え、同時にリレー接点b2を閉じ、音声警報信号E7をスピーカ70に供給可能とする。このため出火住戸の戸外表示器のみが音声出力することになる。
【0060】
更に住戸用受信機3aには断線検出回路45が設けられ、中継器2aからの作動信号E1の信号線の断線を監視している。この断線監視のため、中継器2a側には断線監視用の抵抗24と直列に断線検出回路22の断線検出リレーDのリレー接点d1を接続しており、作動信号E1の信号線及び抵抗24を流れる微弱な電流が断たれることで断線検出を行う。また中継器2aの断線検出回路22で感知器回線6aの断線を検出したときのリレー接点d1の開放についても、同様にして断線検出を行い、表示部38に断線表示を行わせる。
3.住棟用受信機
図3は図1の火災報知システムに設けた住棟用受信機1の実施形態である。住棟用受信機1は電源部96で作り出されたDC24Vを電源線8により各住戸の中継器2a〜2nに供給している。中継器2a〜2nからの火報信号線9は、受信回路74及び断線検出回路92に接続されている。ここで火報信号線9、受信回路74及び断線検出回路92は、建物の警戒区域例えば階別ごとに設けられており、このため受信回路74は火報信号線9に応じて火災確定信号E4を受信することができる。従って、制御部76は受信回路74からの受信出力を受けることで、出火階を判断することができる。なお図3の実施例にあっては、説明を簡単にするため、特定の階の火災信号線9のみを示している。
【0061】
制御部76は受信回路74による火災確定信号E4の受信出力を受けて、表示部78により火災警報を行う。即ち、表示部78で代表火災灯を点灯し、同時に、火災発生階を示す地区表示灯を点灯する。更に音声合成部86を起動してアンプ87によりスピーカ89から音声警報を行わせる。更に制御部76は、火災代表リレーFAを作動すると同時に、階別に設けている地区リレーR1〜Rnのうち受信した階を示す地区リレー例えば地区リレーR1を作動する。
【0062】
代表火災リレーFAが作動されると、そのリレー接点faが閉じ、中継器側に対し確認信号E5を出力する。またマトリクス回路84に設けている作動した地区リレーR1のリレー接点r1をオンし、予め設定してあるダイオードマトリクスに基づいて出火階及び直上階に対し制御信号E6a,E6bを出力する。同時に音声合成部86を起動し、音声メッセージの音声信号を出力してアンプ88で増幅した後、トランス90を介して音声警報信号線12に音声警報信号E7を出力し、制御信号E6a,E6bにより出火階および直上階の各住戸用受信機、及び出火住戸の戸外表示器からの音声出力を行わせる。
また断線検出回路92は、通常時は火報信号線9及び最終段の中継器2nの火報信号線9間に接続している断線検出用の抵抗に流れる微弱な電流を監視しており、この監視電流が断たれると断線検出出力を制御部76に対し行い、表示部78に火報信号線9の断線表示を行わせる。火報信号線9の断線表示は、中継器2a〜2n側における感知器回線6a〜6nの断線検出の際にも同様にして、断線検出とその表示が行われる。
4.システム動作
図1の火災報知システムにおいて、住戸A1で火災が発生した場合を例にとってシステム動作を説明する。住戸A1で火災が発生すると、感知器回線6aに接続している火災感知器5aが作動し、発報信号を中継器2aに出力する。即ち、図2の中継器2aから明らかなように、火災感知器5aの発報により感知器回線6aに発報電流が流れ、受信回路14の受信リレーLが作動し、リレー接点lを閉じて作動信号E1を住戸用受信機3aに出力する。
【0063】
この受信リレーLの作動と同時に保持リレー回路15の保持リレーMも作動し、そのリレー接点m1,m2を閉じて火災確定信号の出力許容状態及び作動信号E1の保持許容状態を作り出す。
住戸用受信機3aは中継器2aから作動信号E1を受けると、受信回路30の受信リレーRを作動し、受信リレーRの作動を制御部32で検出して、第1タイマ34及び第2タイマ36を起動する。同時に表示部38により警報表示を行い、また音声合成部52を起動してスピーカ56より警報メッセージを出力させる。
【0064】
制御部32は、第1タイマ34で設定された10秒間継続して受信リレーRの作動状態を検出すると、作動信号E1の受信状態を保持すると共に保持リレーHを作動し、そのリレー接点hを閉じて、中継器2aに対しLレベルとなる保持信号E2を出力する。尚、制御部32は、第1タイマ34で設定された10秒間継続して受信リレーRの作動状態が得られなかった場合は、作動信号E1が断たれ受信リレーRが作動しなくなった時点で、第1タイマ34、第2タイマ36のクリアも含め住戸用受信機3aの各回路部を初期状態に復旧させる。
【0065】
保持信号E2を受けた中継器2aは、リレー接点f2を介して保持回路20を作動し、保持リレーMを火災感知器5aが復旧しても非作動とならないように保持する。保持回路20は、同時に戸外表示器4aに対する供給電圧を+12Vから火災信号E8となる+24Vに変化させて火災表示を行わせる。戸外表示器4aの検出回路64は、火災信号E8となる+24Vを検出し、火災灯66を点滅し、またリレーの作動によりリレー接点eを閉じ、リレーBを作動可能状態とする。
【0066】
続いて住戸用受信機3aの制御部32は、2〜5分の範囲内の所定時間を設定した第2タイマ36のタイムアップを監視している。第2タイマ36がタイムアップすると、火災確定リレーKを作動してリレー接点kを開き、中継器2aに対する有電圧信号E3を遮断することで火災確定を通知する。もちろん、第2タイマ36がタイムアップする前に火災確定スイッチ40のオン操作を検出すると、直ちに火災確定リレーTを作動しリレー接点tを開くことで、第2タイマ36に関係なく強制的に有電圧信号E3を遮断して火災確定を中継器2aに通知する。
【0067】
住戸用受信機3aからの有電圧信号E3が火災確定に基づいて遮断されると、フォトカプラ18の出力がそれまでのLレベル出力からHレベル出力に立ち上がり、インバータ25でLレベルに反転されて出力されることで、リレー接点m2は閉じられて出力許容状態となっていることから火災確定移報リレーSに電流が流れ作動する。
【0068】
火災確定移報リレーSが作動するとリレー接点s1が閉じて、Lレベルとなる火災確定信号E4を火報信号線9を介して住棟用受信機1に出力する。またリレー接点s2が閉じ、住棟用受信機1からの確認信号E5の受信可能状態を作り出す。
住棟用受信機1は図3のように、中継器2aからの火災確定信号E4を火報信号線9を介して受信回路74で受け、制御部76は、受信回路74から受信出力を受けることで、表示部78により火災代表表示及び地区表示を行う。同時にリレー回路82の代表火災リレーFAを作動すると同時に、対応する地区リレーR1を作動する。火災代表リレーFAの作動によりそのリレー接点faが閉じ、中継器2aに対し確認信号線10を介して確認信号E5を出力する。
【0069】
この住棟用受信機1からの確認信号E5を受けた図2の中継器2aは、リレーFを作動し、そのリレー接点f1を閉じ、既に閉じているリレー接点m1との直列回路により住戸用受信機3aに対する作動信号E1の出力状態を継続保持する。またリレー接点f2を開くことで住戸用受信機3aからの保持信号E2の入力を切り離し、中継器2aの保持回路20の保持動作を住棟用受信機1からの確認信号E5により行わせる。
【0070】
更に図3の住棟用受信機1にあっては、地区リレーR1の作動によりマトリクス回路84のリレー接点r1をオンし、ダイオードマトリクスで予め定められた火災発生階及びその直上階に対し制御信号E6a,E6bを出力する。火災発生階に対する制御信号E6aは図2の住戸用受信機3a及び戸外表示器4aに与えられ、リレーBを作動する。即ち住戸用受信機3aにあっては、制御信号E6aによりフォトカプラ60のフォトダイオードを発光駆動して、フォトトランジスタのオンによりリレーBを作動し、リレー接点bを開くことでスピーカ切替リレーGを非作動として、リレー接点gを音声警報信号線12側に切り替える。
【0071】
また戸外表示器4aにあっては、リレーBの作動でリレー接点b1によりスピーカ70を音声警報信号線12側に切り替え、同時にリレー接点b2を閉じてトランス72に対する音声警報信号E7の入力を可能とする。出火住戸A1以外の出火階の他の住戸A2〜Anにあっては、住戸用受信機3b〜3nのリレーBのみが作動してスピーカ56を音声警報信号線12側に切り替える。また直上階の住戸用受信機についても、制御信号E6bによりリレーBの作動でスピーカ56を音声警報信号線12側に切り替える。
【0072】
このような制御信号E6a,E6bの出力と共に、図3の住棟用受信機1の制御部76は音声合成部86を起動し、音声信号をアンプ88で増幅した後に、スピーカ90を介して音声警報信号線12に音声警報信号E7として送出する。このため、図2の住戸用受信機3aのスピーカ56及び戸外表示器4aのスピーカ70に住棟用受信機1からの音声警報信号E7が供給され、例えば「ウーウー、火事です、火事です。1階で火災が発生しました。安全を確認して避難してください。」などの音声メッセージの警報出力が行われる。同時に出火階および直上階の他の住戸の住戸用受信機のスピーカからも同じ音声メッセージが出力される。
【0073】
次に住戸側で火災感知器が誤動作により発報した場合の動作を説明する。図2の中継器2aからの感知器回線6aに接続している火災感知器5aが火災以外の原因、例えばストーブやコンロ等の影響により誤動作して発報し、しかも発報状態が10秒以上継続したとする。このような10秒以上続く火災感知器5aの誤動作に対し、通常の火災時と同様に中継器2aの受信動作が行われ、作動信号E1を受けて住戸用受信機3aで警報表示と警報音声の出力が行われる。
【0074】
このとき制御部32は作動信号E1の受信で第1タイマ34及び第2タイマ36を起動し、誤作動状態が10秒以上継続することから、第1タイマ34の10秒継続して受信リレーRの作動状態が得られ、作動信号E1の受信状態を保持すると共に、保持リレーHを作動して中継器2aに対しLレベルとなる保持信号E2を出力して、中継器2aの保持回路20の保持動作が行われる。
【0075】
しかしながら、第2タイマ36のタイムアップ前に住戸内の居住者が非火災であることを確認し、これに基づいて住戸用受信機3aに設けている復旧スイッチ42をオン操作する。復旧スイッチ42がオン操作されると、制御部32は受信リレーRの作動状態を確認する。このとき既に誤報を起こした火災感知器5aは真火災でないことで復旧していることから、受信リレーRは被作動状態となっている。
【0076】
したがって、制御部32は誤報による作動信号E1の受信と判断し、表示部38の警報表示及び音声合成部52による音声出力のそれぞれを停止して初期状態に復旧する。また、復旧に伴い保持リレーHも非作動となってリレー接点hが開き、保持信号E2がHレベルに戻って解除状態となり、保持回路20の動作が復旧することで、一旦保持した保持リレー回路15の保持リレーMも非作動状態に復旧する。
【0077】
このように本発明の火災報知システムにあっては、住戸用受信機3aに設けた2〜5分の時間設定ができる第2タイマ36のタイムアップ前については、復旧スイッチ42の操作により警報受信に対する動作を初期状態に復旧させることができる。
次に住戸用受信機3aに対するAC100Vの供給が断たれた停電状態でのシステム動作を説明する。図2の住戸用受信機3aにおいて、電源部62に対するAC100Vが断たれた停電状態にあっては、電源部62からの電源電圧+12Vの供給を受けている住戸用受信機3aの回路部は全て停止状態となっている。このとき中継器2aに対する有電圧信号E3も無電圧の遮断状態となっているが、有電圧信号E3の遮断状態は中継器2aから見ると住戸用受信機3aから火災確定通知が行われていると同じ状態である。
【0078】
即ち、住戸用受信機3aが停電している状態では、中継器2aに対しては火災確定の通知が住戸用受信機3aから固定的に行われたことと同じ状態となる。このため、中継器2aのフォトカプラ18の出力はHレベルとなり、インバータ25の反転によるLレベル出力で火災確定移報リレーSが作動許容状態となっている。
【0079】
このような住戸用受信機3aの停電状態で火災感知器5aが発報すると、受信回路14の受信リレーLが作動すると同時に、保持リレー回路15の保持リレーMも作動し、そのリレー接点m1,m2を閉じる。リレー接点m2が閉じると、インバータ25のLレベル出力により火災確定移報リレーSは作動許容状態にあるために直ちに作動し、リレー接点s1を閉じて火災確定信号E4を住棟用受信機1に出力する。またリレー接点s2を閉じることで住棟用受信機1からの確認信号E5の受信可能状態を作り出す。
【0080】
中継器2aからの火災確定信号E4の出力に対し、図3の住棟用受信機1における代表火災リレーFAの作動でそのリレー接点faが閉じ、確認信号E5が送り返されて中継器2aのリレーFが作動し、リレー接点f2を切り離して住棟用受信機1からの確認信号E5に基づいた中継器2aの火災確定出力の保持状態が作り出される。
【0081】
また図3の住棟用受信機1における火災確定信号E4の受信に基づく制御信号E6aの出力で戸外表示器4aのリレーBが作動して、リレー接点b1の切替え及びリレー接点b2を閉じることでスピーカ70が音声警報信号線12側に接続され、住棟用受信機1からの音声警報信号E7の供給により音声メッセージを出力することができる。
【0082】
また停電状態にある住戸用受信機3aにあっては、停電によりスピーカ切替リレーGが非作動となってそのリレー接点gを音声警報信号線12側に切り替えている。このため、住棟用受信機1からの音声警報信号E7が住戸用受信機3aのスピーカ56に供給され、住戸用受信機3aからも音声出力を行うことができる。
【0083】
このように本発明の火災報知システムにあっては、住戸用受信機3aに停電が起きても、停電住戸の火災監視を中央の住棟用受信機1側で行うことができ、また音声警報の出力も停電に影響されることなく、通常時と全く同様に行うことができる。
5.断線監視
次に本発明の火災報知システムにおける断線監視を説明する。本発明の火災報知システムにおける断線監視は、次の3つとなる。
【0084】
▲1▼中継器と住戸用受信機の作動信号E1の信号線の断線監視
▲2▼中継器の感知器回線の断線監視
▲3▼中継器と住棟用受信機の間の火報信号線の断線監視
まず図2を参照して、中継器2aと住戸用受信機3aの作動信号E1の信号線の断線監視を説明する。作動信号E1を中継器2aから住戸用受信機3aに送る信号線につき、中継器2a側には断線検出用の抵抗24がリレー接点d1を介して接続されている。このため作動信号E1の信号線には、住戸用受信機3a側からの電源供給により抵抗24で決まる微弱な監視電流が流れている。作動信号E1の信号線が断線すると、抵抗24で決まる微弱な監視電流が断たれ、この監視電流が断たれることを住戸用受信機3aの断線検出回路45で検出し、制御部に断線検出出力を行い、制御部32は表示部38に対し断線表示を行う。
【0085】
次に中継器2aの感知器回線6aの断線監視を説明する。中継器2aから引き出された感知器回線6aに接続した火災感知器5aのうちの終端の火災感知器5aには断線監視用の抵抗7が内蔵されて感知器回線6aの終端に接続され、この抵抗7で決まる微弱な断線監視用の監視電流を感知器回線6aに流している。この監視電流は断線検出回路22で監視されている。
【0086】
感知器回線6aが断線すると、抵抗7で決まる微弱な監視電流が断たれることで断線検出回路22が感知器回線6aの断線を検出して、断線検出リレーDを作動する。断線検出リレーDが作動すると、作動信号E1の信号線側に設けているリレー接点d1を開き、作動信号E1の信号線について疑似的な断線状態を作り出し、これによって住戸用受信機2aに感知器回線6aの断線検出を知らせる。
【0087】
住戸用受信機3aはリレー接点d1による疑似的な断線状態を断線検出回路45で検出し、制御部32により表示部38で断線表示を行う。中継器2aの感知器回線6aの断線検出結果は、更に住棟用受信機1に通知され、住棟用受信機1においても断線表示が行われる。
図4は中継器2a〜2nの感知器回線の断線検出結果を住棟用受信機1に通知するための実施形態である。中継器2a〜2nの各回路は基本的には図2の中継器2aと同じであるが、同じ警戒区域に設置した終端の中継器2nにおける住棟用受信機1に対する火災確定信号E4の出力回路部に、断線監視用の抵抗100を断線検出回路22の断線検出リレーDのリレー接点d2を介して接続している。
【0088】
更に中継器2a〜2nに設けた断線検出回路22は、住棟用受信機1からの電源線8から+24Vの電源電圧を入力する入力端子102と次段の中継器の断線検出回路22に電源電圧+24Vを出力する出力端子104を備えており、感知器回線6aの断線を検出すると入力端子102からの+24Vを出力端子104に供給する。前段に位置する中継器2aの断線検出回路22の出力端子104は、断線検出渡り線13を介して最終段の中継器2nの断線検出回路22の入力端子102にまで途中の中継器を経由して接続されている。
【0089】
尚、図4は中継器2a,2nを示しているが、それ以外の最終段の中継器2nの前段に位置する中継器についても、各断線検出回路22の出力端子104が次段の中継器2aの断線検出回路22の入力端子102に並列的に接続される。
このような中継器2aと最終段の中継器2nに対する断線検出渡り線13の接続により、中継器2aの感知器回線6aが断線して断線検出回路22で断線検出が行われると、入力端子102の電源電圧+24Vが出力端子104に供給され、断線検出渡り線13を介して最終段の中継器2nの断線検出回路22の入力端子102に供給される。
【0090】
このため、入力端子102から電源電圧+24Vを受けた最終段の中継器2nに設けた断線検出回路22の断線検出リレーDが作動し、火報信号線9の終端に接続しているリレー接点d2を開いて、疑似的な断線状態を作り出す。このため図3の住棟用受信機1にあっては、断線検出回路92が火報信号線9の断線を検出し、制御部76は表示部78に断線表示を行わせる。
【0091】
更に火災確定信号E4を住棟用受信機1に送る火報信号線9の断線監視は、図4のように、最終段の中継器2nにリレー接点d2を介して断線監視用の抵抗100を接続し、抵抗100で決まる微弱な電流を火報信号線9に流し、これを図3の住棟用受信機1の断線検出回路92で監視している。火報信号線9で断線があると、住棟用受信機1にあっては、断線検出回路92が断線を検出し、制御部76は表示部78に断線表示を行わせる。
【0092】
火報信号線9の住棟用受信機1における断線表示は、中継器2a〜2nの感知器回線6a〜6nの断線表示と区別できないが、感知器回線6a〜6n側の断線については住戸用受信機3a〜3n側でも同時に断線表示が行われていることから、住戸用受信機3a〜3n側での断線の有無を確認することで火報用信号線8の断線か感知器回線6a〜6n側の断線かを区別することができる。
【0093】
尚、図1のシステム構成は、建物の特定階例えば1階の住戸A1〜Anを例にとっているが、実際には住棟用受信機1に対し複数階の住戸側の設備が階別に分けた住棟用受信機1との間の信号線により同様に接続されたシステム構成をとることになる。また上記の実施形態にあっては中継器2a〜2nは独立に設けているが、戸外表示器4a〜4nや住戸用受信機3a〜3nの筐体内に収納するようにしてもよい。更に、住戸用受信機3aに設けられる第2タイマ36の2〜5分のタイマ時間は、現場で環境に対応させて任意に可変設定することができる。
【0094】
【発明の効果】
以上説明したように本発明の共同住宅用火報システムによれば、各住戸の火災感知器及び中継器を住棟用受信機からの電源供給により動作するようにしたため、住戸が空き等となっていることで住戸用受信機への電源供給が断たれても、その住戸の火災を確実に監視することができる。
【0095】
また住戸用受信機から中継器への火災確定の移報信号に有電圧信号を使用し、有電圧信号の遮断を中継器で検出した場合に、住戸用受信機から火災確定の移報が行われたと判断しているため、住戸用受信機の停電時による有電圧信号の遮断時にも、火災感知器の発報を受信した際に直ちに火災確定信号を住棟用受信機に出力して住棟用受信機で火災警報を行なわせることができ、住戸側が停電しても住棟用受信機による直接的な監視ができるため、高い信頼性が得られる。
【0096】
更に住戸用受信機の火災確定の出力に基づいて中継器から住棟用受信機に火災確定の移報が行われた後は、中継器における火災確定信号の出力状態の保持の解除は住棟用受信機からしかできず、住戸側で火災発報があった後の現場調査等を確実に行うことができる。
【図面の簡単な説明】
【図1】本発明のシステム構成のブロック図
【図2】図2の中継器、住戸用受信機及び戸外表示器の実施形態の回路ブロック図
【図3】図1の住棟用受信機の実施形態の回路ブロック図
【図4】図1の中継器相互間の断線監視機能を実現する実施形態の回路ブロック図
【符号の説明】
A1〜An:住戸
1:住棟用受信機
2a〜2n:中継器
3a〜3n:住戸用受信機
4a〜4n:戸外表示器
5a〜5n:火災感知器(自己復旧型)
6a〜6n:感知器回線
7,24,100:断線検出抵抗
8:電源線
9:火報信号線
10:確認信号線
11:制御信号線
12:音声警報信号線
13:断線検出渡り線
14,30,74:受信回路
15:保持リレー回路
16:低電圧回路
18:フォトカプラ
20:保持回路
22,45,92:断線検出回路
32,76:制御部
34:第1タイマ(10秒)
36:第2タイマ(2〜5分)
40:火災確定スイッチ
42:復旧スイッチ
44:音響停止スイッチ
52,86:音声合成部
56,70,89:スピーカ
62,96:電源部
64:検出回路
66:火災灯
84:マトリクス回路
102:入力端子
104:出力端子
L,R:受信リレースイッチ
B:音声出力リレー
D:断線検出リレー
F:確認受信リレー
G:スピーカ切替リレー
H,M:保持リレー
K,T:火災確定リレー
FA:代表火災リレー
R1〜Rn:地区リレー
[0001]
BACKGROUND OF THE INVENTION
The present invention provides a fire detector, a repeater, a dwelling unit receiver, and an intercom facility for each residence unit to be individually monitored, and a central building management room is provided with a dwelling unit receiver for centralized monitoring. It relates to a fire alarm system.
[0002]
[Prior art]
In conventional fire alarm systems for apartment houses, when a fire detector is installed in a dwelling unit, a warning is issued by a housing information board (receiver for dwelling unit) or a doorphone installed in the dwelling unit. Is called. At the same time, a notification signal is sent to a receiver for a residential building that centrally monitors disaster prevention information installed in the center of a manager's room or the like via a house information panel or door phone. The receiver for the residential building that has received the notification signal, for example, rings the district bells installed on the fire floor and directly above the floor to notify the occurrence of a fire.
[0003]
Recently, a voice alarm system has been required instead of the district bell. For example, in the system disclosed in Japanese Patent Laid-Open No. 4-350800, alarms such as the fire floor and the directly above floor are controlled by sending a notification transfer signal from a receiver for a residential building installed in a manager's room in the event of a fire. For residential units that require notification, switch the speaker of the doorphone unit installed at the entrance to the signal line for the voice alarm from the receiver for the residence building. Has been issued.
[0004]
At the same time, the receiver for the residential building also sends a notification transfer signal to the housing information panel installed in each dwelling unit that requires alarm notification, so that the alarm notification is also performed in the dwelling unit.
[0005]
[Problems to be solved by the invention]
However, in such a conventional fire alarm system for an apartment house, since a normal housing information panel is operated by the power supply of each dwelling unit, the fire detector is connected to the housing information panel and supplied with power. If the dwelling unit is turned off because the dwelling unit is empty, etc., the housing information panel and fire detector cannot receive power supply. There was a problem that the fire at the dwelling unit could not be monitored at all.
[0006]
The present invention has been made in view of such a conventional problem, and an object thereof is to provide a fire alarm system for an apartment house that can surely monitor a fire even when the power is turned off on the dwelling unit side. And
[0007]
[Means for Solving the Problems]
In order to achieve this object, the present invention is configured as follows. First, the present invention provides a self-restoring fire detector that outputs a warning signal only while detecting a fire to each dwelling unit, a repeater that connects the fire detector via a sensor line, and a repeater. Receives an activation signal that is output when a fire detector alert is received, issues a fire alarm, and at least has a receiver for the unit that operates by receiving power supply from the unit, and relays it to the center of the manager's room, etc. Residential building receivers that receive a fire confirmation signal from the unit and issue a fire alarm, and connected to the fire detectors and repeaters of each unit to be operated by the power supply from the receiver for the residential building For fire alarm systems.
[0008]
In the present invention as such a fire alarm system for apartment houses, a voltage signal is output to the repeater at a normal time to a receiver for the dwelling unit of each dwelling unit, and an operation signal from the repeater is received to set a timer. A receiver circuit unit that cuts off the voltage signal is provided for each of when the time is up and the power supply to the dwelling unit receiver is stopped. In addition, when a fire detector signal is received, the repeater outputs an operating signal to the dwelling unit receiver if it detects a voltage signal from the dwelling unit receiver. When the interruption of the voltage signal from the receiver is detected, a fire confirmation signal is output to the receiver for the residential building, and when the alarm signal is received from the fire detector, the voltage signal from the receiver for the residential unit is output. When the interruption is detected, a repeater circuit is provided to immediately output a fire confirmation signal to the receiver for the residential building and perform a fire alarm with the receiver for the residential building.
[0009]
As described above, the fire alarm system for apartment houses according to the present invention uses a voltage signal as a transfer signal for determining fire from the receiver for dwelling units to the repeater, and when the interruption of the voltage signal is detected by the repeater. Because it is judged that the fire confirmation was sent from the receiver for the dwelling unit, even when the voltage signal due to the power failure of the dwelling unit receiver was cut off, the fire was immediately detected when the fire detector notification was received. High reliability because the confirmation signal can be output to the receiver for the residential building and a fire alarm can be issued by the receiver for the residential building. Is obtained.
[0010]
The receiver circuit unit of the receiver for dwelling unit outputs to the repeater immediately regardless of the timer setting time if it detects the operation of the fire confirmation switch while the timer is set for about 2 to 5 minutes. The fired signal is output to the dwelling receiver by cutting off the voltage signal. That is, the fire confirmation output is delayed by the timer for the fire confirmation, but if the resident operates the fire confirmation switch during the delay, the output of the fire confirmation signal is prioritized.
[0011]
Moreover, the receiver circuit part of the receiver for dwelling units performs a recovery process on condition that the operation signal from a repeater is not received, when operation of a recovery switch is detected during the starting of a timer. For this reason, even if a fire alarm is issued by a receiver for a fire detector due to a false alarm of the fire detector, if the fire set signal is output from the repeater during the timer setting time, It is possible to reset and prevent alarm notification to the central side and surrounding dwelling units when the fire detector makes a mistake.
[0012]
Specifically, the receiver circuit section of the dwelling unit receiver drives the light emission by outputting a voltage signal to the light emitting element of the photocoupler provided in the repeater via the signal line. Then, when the timer expires, when the operation of the fire confirmation switch is detected while the timer is running, and when the power supply to the receiver for the dwelling is stopped, the voltage signal is cut off and the photocoupler is turned off. Stop light emission. For this reason, the repeater circuit unit of the repeater detects the interruption of the voltage signal due to the absence of the light receiving output of the light receiving element of the photocoupler.
[0013]
Furthermore, since the present invention uses a self-restoring fire detector, the receiver circuit unit of the dwelling unit receiver receives the operation signal from the repeater for a predetermined time, for example, 10 seconds continuously. If the activation signal is cut off if the activation signal from the repeater is not received continuously for a predetermined time, for example, 10 seconds, the operation signal is self-held and the retention signal is output to the repeater. I do.
[0014]
In addition, when the repeater circuit of the repeater receives the alarm signal from the fire detector and detects a voltage signal from the receiver for the dwelling unit, An output permissible state is created, a hold signal from the dwelling unit receiver is received in this output permissible state, the output permissible state is maintained, and further, a voltage signal from the dwelling unit receiver is maintained in this output permissible state A fire confirmation signal is output to the receiver for a residential building when a blockage is detected.
[0015]
Subsequently, when the repeater circuit unit of the repeater receives a confirmation signal (fire representative signal) that is output based on the fire reception of the receiver for the residence building, it interrupts the input of the holding signal from the receiver for the residence unit At the same time, the output permission state of the fire confirmation signal is continuously maintained, and the operation signal output to the dwelling unit receiver is continuously maintained.
In addition, when the confirmation signal from the receiver for the building is cut off, the repeater circuit part of the repeater cancels the holding of the fire confirmation signal output permission state and the holding of the operation signal to the receiver for the dwelling unit. To do. For this reason, the repeater can only be released from the receiver for the residential building. Therefore, even if the fire sensor is restored, the repeater is not released. Surveys can be performed reliably.
[0016]
In addition, the receiver circuit unit of the dwelling unit receiver outputs a holding signal to the repeater, and then detects the interruption of the holding signal on the repeater side based on the confirmation signal from the dwelling receiver, and then receives the signal from the repeater. When the operation signal is cut off, the initial state is restored. For this reason, the receiver for dwelling units can be restored from the receiver for dwelling units, and it can be restored to the initial state without entering the dwelling unit due to a false report of the absent residence unit.
[0017]
Moreover, this invention controls the fire light of the outdoor indicator provided as a door phone sub unit with respect to the receiver for dwelling units. That is, when the repeater circuit unit of the repeater receives the hold signal from the receiver for the dwelling unit, a predetermined power supply voltage normally supplied to the outdoor display of the dwelling unit receiver via the power supply and signal line Outputs fire signals with different power supply voltages. The outdoor display is normally operated by receiving a predetermined power supply voltage from the repeater via the power supply and signal line, and when a fire signal with a power supply voltage different from the normal power supply voltage is detected, the fire light blinks. .
[0018]
In addition, the present invention provides a self-restoring fire detector that is provided in each dwelling unit and operates by receiving power supply from a receiver for a residential building via a sensor line, and receives a fire detector notification. When this happens, the operation signal is output to the receiver for the unit that operates by receiving the power supply from the unit, and a fire alarm is given, and the fire confirmation signal is sent to the receiver for the building in the center of the manager's room etc. Is provided to provide a fire alarm, and to provide a repeater for a fire alarm system for an apartment house connected so as to be operated by power supply from a receiver for a residential building.
[0019]
In the present invention as such a repeater, if a voltage signal from a receiver for a dwelling unit is detected when a fire alarm is received, an operation signal is sent to the receiver for a dwelling unit. If a block of the voltage signal from the receiver for the dwelling unit is detected after that, a fire confirmation signal is output to the receiver for the dwelling unit, and when the fire detector alarm is received, When the interruption of the voltage signal from the receiver is detected, a repeater circuit is provided that immediately outputs a fire confirmation signal to the receiver for the residential building and issues a fire alarm at the receiver for the residential building. It is characterized by that.
[0020]
The repeater circuit section of this repeater, when receiving a notification signal from the fire detector, detects a voltage signal from the receiver for the dwelling unit. An output permissible state is created, a holding signal from the receiver for dwelling units is received in this output permissible state, the output permissible state of the fire confirmation signal is maintained, and the output from the dwelling unit receiver is held in the state where this output allowable state is maintained. When a voltage signal interruption is detected, a fire confirmation signal is output to the dwelling receiver.
[0021]
Subsequently, when the repeater circuit receives a confirmation signal (fire representative signal) that is output based on the fire reception of the receiver for the residential building, the repeater circuit blocks the holding signal from the receiver for the residential unit and confirms the fire. The signal output permission state is continuously maintained, and the operation signal to the dwelling unit receiver is continuously maintained.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
<Contents>
1. System configuration
2. Repeater and receiver for dwelling unit
3. Receiver for residential building
4). System operation
5. Disconnection monitoring
1. System configuration
FIG. 1 is a system configuration diagram of a fire alarm system for an apartment house according to the present invention. In FIG. 1, a receiver 1 for a residential building for centrally monitoring each dwelling unit is installed on the center side such as an administrator room. On the other hand, on each of the dwelling units A1 to An, for example, as represented by the dwelling unit A1, a repeater 2a, a dwelling unit receiver 3a, and an outdoor display 4a are provided.
[0023]
A sensor line 6a is drawn out from the repeater 2a, and one or a plurality of fire detectors 5a are connected. The fire detector 5a is a self-recovering fire detector. In other words, the self-recovering fire detector 5a sends a notification current as a notification signal to the detector circuit 6a while detecting smoke, for example, due to a fire, and if the smoke cannot be detected by the detector itself, Recover and stop the alarm current.
[0024]
When the fire detector 5a issues a notification, the dwelling unit receiver 3a receives a detector operation signal (hereinafter simply referred to as “operation signal”) E1 from the repeater 2a and displays an alarm. In response to the reception of the operation signal E1, the dwelling unit receiver 3a is provided with a first timer for accumulation, for example, when the operation signal E1 is obtained continuously for 10 seconds, and further relayed. The holding signal E2 is output to the device 2a, and the holding operation is also performed on the repeater 2a side.
[0025]
Further, the dwelling unit receiver 3a starts a second timer having a time setting of 2 to 5 minutes simultaneously with the reception of the operation signal E1 from the repeater 2a, and the recovery switch is not operated while the second timer is started. Then, the voltage signal E2 output to the repeater 2a is interrupted to notify the fire confirmation. When the fire confirmation switch provided in the dwelling unit receiver 3a is operated while the second timer is activated, the voltage signal E2 is interrupted regardless of the second timer and the fire confirmation is notified to the repeater 2a. .
[0026]
The repeater 2a receives the fire detector 5a and outputs the operation signal E1 to the dwelling unit receiver 3a. Then, the holding signal E2 is obtained from the dwelling unit receiver 3a, and then the voltage signal E3 is received. When the fire confirmation due to the interruption is detected, the fire confirmation signal E4 is output to the receiver 1 for the residential building. When a fire reception is performed on the residential building receiver 1 side with respect to the fire confirmation signal E4, a confirmation signal E5 is returned to the repeater 2a.
[0027]
The repeater 2a that has received the confirmation signal E5 from the dwelling unit receiver 1 can continue the holding state of the fire confirmation signal output based on the interruption of the holding signal E2 and the voltage signal E3 from the dwelling unit receiver 3a. Self-holding and disconnecting the holding state by the holding signal E2 from the dwelling unit receiver 3a.
Thus, holding of the output state of the fire confirmation signal in the repeater 2a is switched from holding based on the holding signal E2 from the dwelling unit receiver 3a to holding based on the confirmation signal E5 received from the dwelling unit receiver 1. The restoration operation of the repeater 2a by the dwelling unit receiver 3a is prohibited, and the restoration operation of the repeater 2a is switched so that it can be performed only by blocking the confirmation signal E4 from the dwelling unit receiver 1.
[0028]
For this reason, after the fire confirmation signal E4 is output from the repeater 2a to the receiver 1 for the residential building and the fire alarm is displayed on the receiver 1 for the residential building, the relay 2a is restored to the receiver 1 for the residential building. It is possible to prevent the resident from performing recovery processing with the dwelling unit receiver 3a, for example, and to easily investigate the reporting dwelling unit when the fire detector 5a has issued a false alarm. Can do.
[0029]
The outdoor indicator 4a receives the fire signal E8 from the repeater 2a and blinks the built-in fire light. The fire signal E8 from the repeater 2a is output along with the holding operation when the holding signal E2 is received from the dwelling unit receiver 3a.
Here, the dwelling unit receiver 1 and each of the dwelling units A1 to An are connected by a power supply line 8, a fire alarm signal line 9, a confirmation signal line 10, a control signal line 11, and a sound alarm signal line 12. That is, the repeaters 2a to 2n on the dwelling units A1 to An are connected to the power supply line 8 from the receiver 1 for the dwelling, and the repeaters 2a to 2n are not supplied with power from the dwelling units, but are located on the center side. It operates with the power supply from the receiver 1.
[0030]
For this reason, even if there is a power failure on the dwelling unit side, the repeaters 2a to 2n operate normally, and the fire monitoring by the self-recovering fire detectors 5a to 5n connected to the detector lines 6a to 6n is normal. it can. The fire report signal line 9 sends the fire confirmation signal E4 output from the repeaters 2a to 2n to the receiver 1 for the residential building. The confirmation signal line 10 outputs to the repeater the confirmation signal E5 when the residential building receiver 1 receives the fire confirmation signal E4 from any one of the repeaters 2a to 2n. As the confirmation signal E5, specifically, a fire representative signal in the receiver 1 for a residential building is used.
[0031]
Furthermore, in the fire alarm system of the present invention, the intercom speakers are provided in the dwelling unit receivers 3a to 3n and the outdoor displays 4a to 4n. A sound alarm for fire reception is made from 1.
For example, a sound alarm is issued on the fire floor and directly above it. Moreover, as a way of issuing a sound alarm from the receivers 3a to 3n for the dwelling units and the outdoor indicators 4a to 4n, a sound alarm is issued from both the receiver for the dwelling unit and the outdoor indicator for the fire-dwelling unit, and for other dwelling units An audio alarm is issued only from the dwelling unit receiver. Of course, the form of the dwelling unit that performs the voice alarm can be determined as needed.
[0032]
For such a sound alarm for the dwelling unit side, a control signal line 11 for controlling the output destination of the sound alarm is drawn out from the receiver 1 for the residential building. The control signal line 11 is drawn out for each alert area such as a floor. FIG. 1 shows an example in which the dwelling units A1 to An are on the same floor, and the control is performed by outputting a control signal E6.
Further, the audio warning signal line 12 is connected to the dwelling unit receivers 3a to 3n and the outdoor displays 4a to 4n of the dwelling units A1 to An to supply the audio warning signal E7, and based on the control signal E6a by the control signal line 11. The voice alarm signal line 12 is switched to each speaker, and a voice message based on the voice signal, for example, “Woooo, fire, fire. A fire has occurred on the first floor. Warning message such as “Please.” Is output.
[0033]
Furthermore, the disconnection detection crossover 13 is sequentially connected between the repeaters 2a to 2n provided in the dwelling units A1 to An. That is, each of the repeaters 2a to 2n is provided with a disconnection detection circuit for the sensor lines 6a to 6n connected to the fire detectors 5a to 5n. On the other hand, a disconnection detection signal is output via the disconnection detection crossover 13.
[0034]
The disconnection detection signal from the repeater 2a that has detected the disconnection of the sensor line is notified to the final-stage repeater 2n via the disconnection detection crossover line 13, and the final-stage repeater 2n that has received the disconnection detection signal is notified. The disconnection detection circuit generates a pseudo disconnection state by disconnecting the termination resistance for disconnection detection connected to the fire alarm signal line 9 from the receiver 1 for the residential building, and thus for the receiver 1 for the residential building. It is possible to notify the disconnection of the sensor line on the repeater side.
[0035]
Next, the details of the fire alarm system according to the present invention shown in FIG. 1 will be described with reference to FIGS.
2. Repeater and receiver for dwelling unit
FIG. 2 is a specific embodiment of the repeater 2a, the dwelling unit receiver 3a, and the outdoor display 4a provided in the dwelling unit A1 of FIG.
[0036]
A sensor line 6a is drawn from the repeater 2a, and a self-restoring fire sensor 5a is connected in parallel to the sensor line 6a. When the self-restoring type fire detectors 5a and 5a detect, for example, smoke due to a fire, the sensor lines 6a are short-circuited to a low impedance, and an alarm current flows. The sensor line 6a is connected to the receiving circuit 14 provided in the repeater 2a, and when the alarm current flows due to the alarm from the fire detector 5a, the reception relay L provided in the receiver circuit 14 is activated.
[0037]
The power supply to the sensor line 6 a is performed by connecting the power line 8 from the receiver 1 for the residential building via the constant voltage circuit 16 and the holding relay circuit 15. Further, in order to detect disconnection of the sensor line 6a, a terminal resistor 7 for detecting disconnection is connected to the fire sensor 5a at the final end, and a weak current flowing through the sensor line 6a and the terminal resistor 7 is disconnected. Monitoring is performed by the detection circuit 22, and when the disconnection is detected, the relay D is activated. This disconnection detection will be further clarified in a later description.
[0038]
When the receiving relay L of the receiving circuit 14 is actuated by the alarm from the fire detector 5a, the relay contact 1 is closed and the actuating signal E1 is output to the dwelling unit receiver 3a. The holding relay M of the holding relay circuit 15 is also operated simultaneously with the operation of the receiving relay L of the receiving circuit 14, and the relay contacts m1 and m2 are closed to create the output permission state of the fire determination signal and the holding permission state of the operation signal.
[0039]
The dwelling unit receiver 3a is provided with a receiving circuit 30 corresponding to the operation signal E1 from the repeater 2a. When the operation signal E1 is received, the reception relay R is operated. The operation of the reception relay R is detected by the control unit 32, and a fire alarm is given. This fire alarm blinks the fire light on the display unit 38, and at the same time, activates the voice synthesis circuit 52 and amplifies the voice signal by the amplifier 54. For example, “Sensor has triggered. Please check. Press the recovery switch if there is a false alarm. "
[0040]
When detecting the operation of the reception relay R, the control unit 32 starts the first timer 34 and the second timer 36. The first timer 34 is, for example, an accumulation timer in which time is set for 10 seconds. When the operating state of the reception relay R is obtained continuously for 10 seconds set by the first timer 34, the control unit 32 operates. While holding the reception state of the signal E1, the holding relay H is operated, the relay contact h is closed, and the holding signal E2 is output to the repeater 2a.
[0041]
When the operation state of the reception relay R is not obtained continuously for 10 seconds set by the first timer 34, the control unit 32 is disconnected when the operation signal E1 is cut and the reception relay R does not operate. Thus, each circuit unit of the dwelling unit receiver 3 is restored to the initial state, including clearing the first timer 34 and the second timer 36.
The signal line of the holding signal E2 for the repeater 2a is normally terminated with a resistor 48, and a photodiode of the photocoupler 46 is connected in parallel to the resistor 48 via a relay contact h. For this reason, in the steady monitoring state, the holding signal E2 is at the H level. When the control unit 32 operates the holding relay H and closes the relay contact h in this state, the holding signal E2 falls to the L level due to the parallel connection of the photodiodes of the photocoupler 46, and this is held as the holding signal E2 to the repeater 2a. Is output.
[0042]
Also, by closing the relay contact h, the photodiode of the photocoupler 46 is driven to emit light by supplying power from the repeater 2a side, and when the phototransistor is turned on, the output of the photocoupler 46 to the control unit 32 rises from L level to H level. Thus, the control unit 32 can recognize the output of the holding signal E2 to the repeater 2a.
[0043]
When the second timer 36 times out in a predetermined time within a range of 2 to 5 minutes set in advance from the start by receiving the operation signal E1, the control unit 32 operates the fire determination relay K and opens the relay contact k. Then, the interruption signal of the voltage signal E3 is output to the repeater 2a. The voltage signal E3 to the repeater 2a is normally the power voltage + 12V from the power supply unit 62 of the dwelling unit receiver 3a. When the fire determination relay K is activated and the relay contact k is opened, the voltage signal E3 is Fall to no voltage.
[0044]
By interrupting the voltage signal E3 as described above, the repeater 2a is notified of fire confirmation from the dwelling unit receiver 3a. The interruption of the voltage signal E3 indicating the fire confirmation is also performed when the fire confirmation switch 40 provided in the control unit 32 is operated. That is, when the fire determination switch 40 is turned on while the second timer 36 is activated, the control unit 32 detects the on operation and immediately activates the fire determination relay T to open the relay contact t, so that the relay 2a is connected. The voltage signal E3 is cut off and a fire confirmation is similarly notified.
[0045]
In addition to the fire confirmation switch 40, the control unit 32 of the dwelling unit receiver 3a is further provided with a restoration switch 42 and an acoustic stop switch 44. When the operation signal E1 is received by the dwelling unit receiver 3a and a fire alarm is given, if the recovery switch 42 is turned on before the second timer 36 times out, the operation signal E1 is not received. That is, on the condition that the reception operation of the reception relay R of the reception circuit 30 is not performed, each circuit unit of the dwelling unit receiver 3a is restored to the initial state immediately or when the second timer 36 times out.
[0046]
On the other hand, if the reception operation of the reception relay R is performed even if the recovery switch 42 is turned on, the operation of the recovery switch 42 is invalidated and the relay contact k is opened by the operation of the fire confirmation relay K. Then, the voltage signal E3 to the repeater 2a is interrupted to notify the fire confirmation. Furthermore, the sound stop switch 44 can stop the voice message from the speaker 56 by turning on during the fire alarm of the receiver 3a for dwelling units.
[0047]
The repeater 2a is provided with a holding circuit 20 for the holding signal E2 output from the dwelling unit receiver 3a when the first timer 34 times out. The holding circuit 20 receives the holding signal E2 from the dwelling unit receiver 3a via the relay contact f2 of the relay F, operates when the holding signal E2 becomes L level, and is provided in the holding relay circuit 15. The operating state of the relay M is created.
[0048]
That is, even if the fire detector 5a is restored after receiving the holding signal E2 from the dwelling unit receiver 2a and the receiving relay L of the receiving circuit 14 is restored accordingly, the operation of the holding relay M of the holding relay circuit 15 is activated. Create a state that maintains state continuously. When the holding circuit 20 receives the holding signal E2 from the dwelling unit receiver 3a, the holding circuit 20 outputs a fire signal E8 to the outdoor display 4a to cause the fire lamp 66 to blink. The fire signal E8 is output by switching the normal power supply voltage + 12V to a higher + 24V.
[0049]
When the repeater 2a detects fire confirmation due to interruption of the voltage signal E3 output from the dwelling unit receiver 2a in the holding state of the output permissible state based on the holding signal E2, the repeater 2a sends a fire confirmation signal to the dwelling receiver. E4 is output. Specifically, the voltage signal E3 from the receiver 3a for the dwelling unit is input to the photodiode of the photocoupler 18, and in the normal time, the photodiode is driven to emit light by the voltage signal E3, and the phototransistor is turned on. The output of the photocoupler 18 to the inverter 25 is L level.
[0050]
For this reason, since the output of the inverter 25 is at the H level, the relay contact m2 has already been closed by the operation of the holding relay M and the output is permitted, but the fire confirmation relay relay S is inoperative. ing. When notification of fire confirmation is received by blocking the voltage signal E3 from the receiver 3a for dwelling units, the light emission of the photodiode of the photocoupler 18 is stopped, the phototransistor is turned off, and the input to the inverter 25 is changed from L level to H level. Stand up to.
[0051]
For this reason, the output of the inverter 25 changes from the H level to the L level, the relay contact m2 is closed, and the output is allowed, so that a current flows through the fire confirmation relay relay S and operates. For this reason, the relay contact s1 is closed, and the fire signal line 9 for the dwelling receiver 1 is pulled to the L level and the fire confirmation signal E4 is output. In response to the transmission of the fire confirmation signal E4 from the repeater 2a to the receiver 1 for the residential building, the receiver 1 for the residential building returns the confirmation signal E5 when the alarm is received, as will be clarified in the following explanation. To do.
[0052]
As this confirmation signal E5, it becomes an output of the fire representative signal in the receiver 1 for residential buildings. The repeater 2a that has received the confirmation signal E5 from the receiver 1 for the residence building operates the confirmation relay F via the relay contact s2 that is closed by the operation of the fire confirmation relay relay S at that time, and the receiver 3a for the residence The relay contact f1 provided on the signal line side of the operation signal E1 is closed, and the relay contact f2 provided in the input circuit for the holding signal E2 from the dwelling unit receiver 3a is opened.
[0053]
Since the relay contact f1 is closed at this time, the relay contact m1 of the holding relay M is already closed and is in the holding state of the operation signal E1, so that a series connection circuit of the relay contact f1 and the relay contact m1 is formed. A state is generated in which the output of the operation signal E1 is held fixedly with respect to the machine 3a. For this reason, even after receiving the confirmation signal E5 from the receiver 1 for residential buildings, even if the reception relay L is deactivated by the restoration of the fire detector 5a and the relay contact l is opened, the activation signal E1 for the receiver 3a for residential units Is output continuously.
[0054]
Further, when the relay contact f2 is opened, the input of the holding signal E2 from the dwelling unit receiver 3a is disconnected, and the holding circuit 20 is switched to the holding state by the confirmation signal E5 from the dwelling unit receiver. When the relay contact f2 is opened, the light emission drive of the photodiode of the photocoupler 46 provided in the output circuit unit of the holding signal E2 of the dwelling unit receiver 3a is stopped, and the phototransistor is turned off, so that The output of the coupler 46 falls from H level to L level.
[0055]
Thereby, the control part 32 can recognize that the repeater 2a was switched to the holding state of the fire confirmation output by the confirmation signal E5 from the receiver 1 for residential buildings. After recognizing the L level output from the photocoupler 46, the control unit 32 then recovers the repeater 2a by cutting off the confirmation signal E5 from the receiver 1 for the residential building and opens the relay contact f1 of the relay F. In response to the recovery of the reception relay R due to the interruption of the activation signal E1, the state can be restored to the initial state.
[0056]
Next, the outdoor display 4a will be described. The outdoor indicator 4a normally operates by receiving + 12V supplied from the constant voltage circuit 16 of the repeater 2a through the power supply / signal line for receiving the fire signal E8. The outdoor display 4a is provided with a detection circuit 64 for a fire signal E8 output from the repeater 2a. Normally, the relay provided in the detection circuit 64 is inactive, so the fire lamp 66 is extinguished and the relay contact e is also open as shown.
[0057]
When the relay circuit 2a receives the holding signal E2 from the dwelling unit receiver 3a and the holding circuit 20 performs the holding operation, the supply voltage to the outdoor display 4a is switched from + 12V to + 24V that becomes the fire signal E8. The detection circuit 64 detects this supply voltage + 24V, operates the relay, blinks the fire lamp 66, and closes the relay contact e at the same time.
[0058]
Next, output control of an audio alarm from the dwelling unit receiver 1 in the dwelling unit receiver 3a and the outdoor display 4a will be described. An audio output control relay B is provided in the dwelling unit receiver 3a and the outdoor display 4a. Each of the relays B is actuated by a control signal E6a from the receiver 1 for residential buildings. That is, the relay B of the dwelling unit receiver 3a is activated by receiving the control signal 6a via the photocoupler 60, opens its relay contact b, deactivates the speaker switching relay G, and switches the switching relay contact g to the transformer 58. Switch to the provided voice alarm signal line 12 side.
[0059]
In the outdoor indicator 4a, the relay B is operated by the control signal E6a in a state where the relay contact e is closed based on the fire signal E8 from the repeater 2a, and the relay contact b1 is provided with the transformer 72. Switching to the alarm signal line 12 side, the relay contact b2 is simultaneously closed, and the audio alarm signal E7 can be supplied to the speaker 70. For this reason, only the outdoor display of the fire-breaking unit outputs sound.
[0060]
Further, the dwelling unit receiver 3a is provided with a disconnection detection circuit 45 to monitor the disconnection of the signal line of the operation signal E1 from the repeater 2a. For this disconnection monitoring, the relay contact d1 of the disconnection detection relay D of the disconnection detection circuit 22 is connected in series with the disconnection monitoring resistor 24 on the repeater 2a side, and the signal line of the operation signal E1 and the resistor 24 are connected. Disconnection detection is performed when the flowing weak current is cut off. In addition, when the disconnection detection circuit 22 of the repeater 2a detects the disconnection of the sensor line 6a, the disconnection detection is similarly performed to cause the display unit 38 to display the disconnection.
3. Receiver for residential building
FIG. 3 is an embodiment of the receiver 1 for a residential building provided in the fire alarm system of FIG. The dwelling receiver 1 supplies DC24V produced by the power supply unit 96 to the repeaters 2a to 2n of each dwelling unit via the power supply line 8. The fire alarm signal lines 9 from the repeaters 2a to 2n are connected to the reception circuit 74 and the disconnection detection circuit 92. Here, the fire alarm signal line 9, the reception circuit 74, and the disconnection detection circuit 92 are provided for each warning area of the building, for example, for each floor. For this reason, the reception circuit 74 responds to the fire alarm signal line 9 with the fire confirmation signal E4. Can be received. Therefore, the control unit 76 can determine the fire floor by receiving the reception output from the reception circuit 74. In the embodiment of FIG. 3, only the fire signal line 9 on a specific floor is shown for the sake of simplicity.
[0061]
The control unit 76 receives the output of the fire confirmation signal E4 from the receiving circuit 74, and gives a fire alarm by the display unit 78. That is, the representative fire lamp is turned on at the display unit 78, and at the same time, the district display lamp indicating the fire occurrence floor is turned on. Further, the voice synthesizer 86 is activated and a voice alarm is issued from the speaker 89 by the amplifier 87. Further, the control unit 76 operates the fire representative relay FA and simultaneously operates the district relay R1 indicating the received floor among the district relays R1 to Rn provided for each floor, for example, the district relay R1.
[0062]
When the representative fire relay FA is activated, the relay contact fa is closed and a confirmation signal E5 is output to the repeater side. Further, the relay contact r1 of the activated district relay R1 provided in the matrix circuit 84 is turned on, and control signals E6a and E6b are output to the fire floor and the directly above floor based on a preset diode matrix. At the same time, the voice synthesizer 86 is activated, and the voice signal of the voice message is output and amplified by the amplifier 88. Then, the voice warning signal E7 is output to the voice warning signal line 12 via the transformer 90, and the control signals E6a and E6b Sound output is performed from the receiver for each unit on the fire floor and directly above the floor, and from the outdoor display of the fire unit.
Further, the disconnection detection circuit 92 normally monitors the weak current flowing through the disconnection detection resistor connected between the fire alarm signal line 9 and the fire alarm signal line 9 of the repeater 2n at the final stage. When this monitoring current is cut off, a disconnection detection output is sent to the control unit 76 to cause the display unit 78 to display the disconnection of the fire alarm signal line 9. The disconnection display of the fire alarm signal line 9 is similarly performed when the disconnection detection of the sensor lines 6a to 6n on the repeaters 2a to 2n side is detected.
4). System operation
In the fire alarm system of FIG. 1, the operation of the system will be described by taking as an example a case where a fire occurs in the dwelling unit A1. When a fire occurs in the dwelling unit A1, the fire detector 5a connected to the detector line 6a is activated and outputs a notification signal to the repeater 2a. That is, as is apparent from the repeater 2a of FIG. 2, the alarm current flows through the detector circuit 6a due to the alarm of the fire detector 5a, the reception relay L of the reception circuit 14 is activated, and the relay contact l is closed. The operation signal E1 is output to the dwelling unit receiver 3a.
[0063]
At the same time as the operation of the reception relay L, the holding relay M of the holding relay circuit 15 is also operated, and the relay contacts m1 and m2 are closed to create the output permission state of the fire confirmation signal and the holding permission state of the operation signal E1.
When receiving the operation signal E1 from the repeater 2a, the dwelling unit receiver 3a operates the reception relay R of the reception circuit 30, and the operation of the reception relay R is detected by the control unit 32, and the first timer 34 and the second timer 36 is started. At the same time, a warning is displayed on the display unit 38, and the voice synthesis unit 52 is activated to output a warning message from the speaker 56.
[0064]
When the control unit 32 continuously detects the operation state of the reception relay R for 10 seconds set by the first timer 34, the control unit 32 maintains the reception state of the operation signal E1, operates the holding relay H, and sets the relay contact h. It closes and outputs the holding signal E2 which becomes L level to the repeater 2a. If the operation state of the reception relay R is not obtained continuously for 10 seconds set by the first timer 34, the control unit 32 is turned off when the operation signal E1 is cut off and the reception relay R does not operate. The circuit units of the dwelling unit receiver 3a are restored to the initial state including the clearing of the first timer 34 and the second timer 36.
[0065]
Upon receiving the holding signal E2, the repeater 2a operates the holding circuit 20 via the relay contact f2, and holds the holding relay M so that it does not become inactive even if the fire detector 5a is restored. At the same time, the holding circuit 20 changes the supply voltage for the outdoor display 4a from + 12V to + 24V, which is the fire signal E8, to display a fire. The detection circuit 64 of the outdoor indicator 4a detects + 24V which becomes the fire signal E8, blinks the fire light 66, closes the relay contact e by the operation of the relay, and makes the relay B operable.
[0066]
Subsequently, the control unit 32 of the dwelling unit receiver 3a monitors the time-up of the second timer 36 that sets a predetermined time within a range of 2 to 5 minutes. When the second timer 36 expires, the fire confirmation relay K is activated to open the relay contact k, and the fire confirmation is notified by cutting off the voltage signal E3 to the repeater 2a. Of course, if the ON operation of the fire determination switch 40 is detected before the second timer 36 times out, the fire determination relay T is immediately activated and the relay contact t is opened, so that it is compulsory regardless of the second timer 36. The voltage signal E3 is interrupted to notify the repeater 2a that the fire is confirmed.
[0067]
When the voltage signal E3 from the receiver 3a for dwelling units is shut off based on the fire confirmation, the output of the photocoupler 18 rises from the L level output so far to the H level output and is inverted to the L level by the inverter 25. As a result, the relay contact m2 is closed and the output is allowed, so that a current flows through the fire confirmation relay relay S and operates.
[0068]
When the fire confirmation relay relay S is actuated, the relay contact s1 is closed, and a fire confirmation signal E4 that becomes L level is output to the receiver 1 for residential buildings via the fire report signal line 9. Further, the relay contact s2 is closed, and a state in which the confirmation signal E5 from the dwelling receiver 1 can be received is created.
As shown in FIG. 3, the residential building receiver 1 receives the fire confirmation signal E <b> 4 from the repeater 2 a via the fire alarm signal line 9 by the reception circuit 74, and the control unit 76 receives the reception output from the reception circuit 74. Thus, the display unit 78 performs fire representative display and district display. At the same time, the representative fire relay FA of the relay circuit 82 is activated, and at the same time, the corresponding district relay R1 is activated. The relay contact fa is closed by the operation of the fire representative relay FA, and a confirmation signal E5 is output to the repeater 2a via the confirmation signal line 10.
[0069]
2 having received the confirmation signal E5 from the receiver 1 for the residential building, operates the relay F, closes the relay contact f1, and uses a series circuit with the relay contact m1 that is already closed. The output state of the operation signal E1 for the receiver 3a is continuously maintained. Further, by opening the relay contact f2, the input of the holding signal E2 from the dwelling unit receiver 3a is disconnected, and the holding operation of the holding circuit 20 of the repeater 2a is performed by the confirmation signal E5 from the dwelling unit receiver 1.
[0070]
Further, in the residential building receiver 1 of FIG. 3, the relay contact r1 of the matrix circuit 84 is turned on by the operation of the district relay R1, and the control signal is sent to the fire occurrence floor predetermined by the diode matrix and its upper floor. E6a and E6b are output. The control signal E6a for the fire occurrence floor is given to the dwelling unit receiver 3a and the outdoor display 4a shown in FIG. That is, in the dwelling unit receiver 3a, the photodiode of the photocoupler 60 is driven to emit light by the control signal E6a, the relay B is activated by turning on the phototransistor, and the speaker switching relay G is activated by opening the relay contact b. As a non-operation, the relay contact g is switched to the voice alarm signal line 12 side.
[0071]
Further, in the outdoor indicator 4a, when the relay B is operated, the speaker 70 is switched to the sound alarm signal line 12 side by the relay contact b1, and at the same time, the relay contact b2 is closed and the sound alarm signal E7 can be input to the transformer 72. To do. In other dwelling units A2 to An other than the first dwelling unit A1, only the relay B of the dwelling unit receivers 3b to 3n is operated to switch the speaker 56 to the voice alarm signal line 12 side. In addition, for the dwelling unit receiver on the floor directly above, the speaker 56 is switched to the voice alarm signal line 12 side by the operation of the relay B by the control signal E6b.
[0072]
Along with the output of the control signals E6a and E6b, the control unit 76 of the residential building receiver 1 in FIG. 3 activates the voice synthesis unit 86, amplifies the voice signal by the amplifier 88, and then plays the voice through the speaker 90. The alarm signal line 12 is sent as a voice alarm signal E7. For this reason, the sound alarm signal E7 from the receiver 1 for residential buildings is supplied to the speaker 56 of the receiver 3a for residential units and the speaker 70 of the outdoor display 4a of FIG. 2, for example, "Woo, fire, fire. 1 A voice message such as “A fire broke out on the floor. Please confirm the safety and evacuate.” Is output. At the same time, the same voice message is output from the speakers of the dwelling unit receivers on the fire floor and the directly above floor.
[0073]
Next, the operation when the fire alarm is triggered due to a malfunction on the dwelling side will be described. The fire detector 5a connected to the sensor line 6a from the repeater 2a in FIG. 2 malfunctions due to a cause other than a fire, for example, the influence of a stove, a stove, etc., and the alert state is 10 seconds or longer. Suppose it continues. In response to such a malfunction of the fire detector 5a that lasts for more than 10 seconds, the receiving operation of the repeater 2a is performed in the same way as during a normal fire, and the alarm signal and alarm sound are received at the dwelling unit receiver 3a in response to the operation signal E1. Is output.
[0074]
At this time, the control unit 32 activates the first timer 34 and the second timer 36 by receiving the operation signal E1, and the malfunction state continues for 10 seconds or more. Therefore, the reception relay R continues for 10 seconds of the first timer 34. The operation state is obtained, and the reception state of the operation signal E1 is held, and the holding relay H is operated to output the holding signal E2 which becomes L level to the repeater 2a, and the holding circuit 20 of the repeater 2a Holding operation is performed.
[0075]
However, before the time-up of the second timer 36, it is confirmed that the resident in the dwelling unit is non-fire, and based on this, the recovery switch 42 provided in the dwelling unit receiver 3a is turned on. When the recovery switch 42 is turned on, the control unit 32 confirms the operating state of the reception relay R. At this time, the fire detector 5a that has already caused a false alarm has been recovered because it is not a true fire, so the reception relay R is in an activated state.
[0076]
Therefore, the control unit 32 determines that the operation signal E1 is received due to the false alarm, stops the alarm display on the display unit 38 and the voice output by the voice synthesis unit 52, and restores the initial state. In addition, the holding relay H is deactivated with the restoration, the relay contact h is opened, the holding signal E2 returns to the H level and the release state is established, and the operation of the holding circuit 20 is restored. The 15 holding relays M are also restored to the inactive state.
[0077]
As described above, in the fire alarm system of the present invention, the alarm is received by operating the recovery switch 42 before the time-up of the second timer 36 that can be set for 2 to 5 minutes provided in the receiver 3a for dwelling units. Can be restored to the initial state.
Next, the system operation in a power failure state in which the supply of AC 100V to the dwelling unit receiver 3a is cut will be described. In the dwelling unit receiver 3a of FIG. 2, in the power failure state in which AC100V to the power supply unit 62 is cut off, all the circuit units of the dwelling unit receiver 3a receiving supply of the power supply voltage + 12V from the power supply unit 62 are used. Stopped. At this time, the voltage signal E3 to the repeater 2a is also in a non-voltage cut-off state, but when the voltage signal E3 is cut off from the repeater 2a, a fire confirmation notification is given from the dwelling unit receiver 3a. Is the same state.
[0078]
In other words, in a state where the dwelling unit receiver 3a is in a power failure state, the same state as when a notification of fire confirmation is made to the repeater 2a from the dwelling unit receiver 3a in a fixed manner. For this reason, the output of the photocoupler 18 of the repeater 2a is at the H level, and the fire finalization relay S is in the operation-permitted state at the L level output by the inversion of the inverter 25.
[0079]
When the fire detector 5a is triggered in such a power failure state of the receiver 3a for dwelling units, the reception relay L of the reception circuit 14 is activated, and at the same time, the retention relay M of the retention relay circuit 15 is also activated, and its relay contacts m1, Close m2. When the relay contact m2 is closed, the fire finalizing relay S is immediately activated because of the L level output of the inverter 25, and the relay contact s1 is closed and the fire finalizing signal E4 is sent to the receiver 1 for the residential building. Output. Further, the relay contact s2 is closed to create a state in which the confirmation signal E5 from the receiver 1 for residential buildings can be received.
[0080]
In response to the output of the fire confirmation signal E4 from the repeater 2a, the relay contact fa is closed by the operation of the representative fire relay FA in the receiver 1 for residential buildings in FIG. 3, and the confirmation signal E5 is sent back to relay the repeater 2a. F operates, disconnects the relay contact f2, and creates a holding state of the fire confirmation output of the repeater 2a based on the confirmation signal E5 from the receiver 1 for residential buildings.
[0081]
In addition, the relay B of the outdoor display 4a is activated by the output of the control signal E6a based on the reception of the fire confirmation signal E4 in the receiver 1 for the residential building in FIG. 3 to switch the relay contact b1 and close the relay contact b2. The speaker 70 is connected to the voice warning signal line 12 side, and a voice message can be output by supplying the voice warning signal E7 from the receiver 1 for residential buildings.
[0082]
Moreover, in the dwelling unit receiver 3a in a power failure state, the speaker switching relay G is deactivated due to a power failure, and the relay contact g is switched to the voice alarm signal line 12 side. For this reason, the audio | voice warning signal E7 from the receiver 1 for dwellings is supplied to the speaker 56 of the receiver 3a for dwellings, and a sound output can also be performed from the receiver 3a for dwellings.
[0083]
As described above, in the fire alarm system of the present invention, even if a power failure occurs in the dwelling unit receiver 3a, the fire monitoring of the outage dwelling unit can be performed at the central dwelling unit receiver 1 side, and an audio alarm is provided. The output of can be performed in exactly the same way as normal without being affected by the power failure.
5. Disconnection monitoring
Next, disconnection monitoring in the fire alarm system of the present invention will be described. The disconnection monitoring in the fire alarm system of the present invention is the following three.
[0084]
(1) Monitoring of disconnection of signal line of operation signal E1 of repeater and dwelling unit receiver
(2) Disconnection monitoring of repeater sensor line
(3) Fire alarm signal line disconnection monitoring between repeater and dwelling receiver
First, the disconnection monitoring of the signal line of the operation signal E1 of the repeater 2a and the dwelling unit receiver 3a will be described with reference to FIG. With respect to the signal line for sending the operation signal E1 from the repeater 2a to the dwelling unit receiver 3a, a disconnection detecting resistor 24 is connected to the repeater 2a side via a relay contact d1. For this reason, a weak monitoring current determined by the resistor 24 flows through the signal line of the operation signal E1 due to the power supply from the dwelling unit receiver 3a side. When the signal line of the operation signal E1 is disconnected, the weak monitoring current determined by the resistor 24 is disconnected. The disconnection detection circuit 45 of the dwelling unit receiver 3a detects that the monitoring current is disconnected, and the controller detects the disconnection. The output is performed, and the control unit 32 displays a broken line on the display unit 38.
[0085]
Next, disconnection monitoring of the sensor line 6a of the repeater 2a will be described. The fire sensor 5a at the end of the fire sensor 5a connected to the sensor line 6a drawn from the repeater 2a has a built-in resistance 7 for monitoring disconnection and is connected to the end of the sensor line 6a. A weak monitoring current for monitoring disconnection determined by the resistor 7 is supplied to the sensor line 6a. This monitoring current is monitored by the disconnection detection circuit 22.
[0086]
When the sensor line 6a is disconnected, the weak monitoring current determined by the resistor 7 is disconnected, so that the disconnection detection circuit 22 detects the disconnection of the sensor line 6a and operates the disconnection detection relay D. When the disconnection detection relay D is activated, the relay contact d1 provided on the signal line side of the activation signal E1 is opened, and a pseudo disconnection state is created for the signal line of the activation signal E1, thereby causing the receiver 2a for the dwelling unit to have a sensor. Informs the detection of disconnection of the line 6a.
[0087]
The dwelling unit receiver 3a detects a pseudo disconnection state due to the relay contact d1 by the disconnection detection circuit 45, and the controller 32 displays the disconnection on the display unit 38. The disconnection detection result of the sensor line 6a of the repeater 2a is further notified to the residential building receiver 1, and the disconnection display is also performed in the residential building receiver 1.
FIG. 4 is an embodiment for notifying the dwelling receiver 1 of the disconnection detection results of the sensor lines of the repeaters 2a to 2n. Each circuit of the repeaters 2a to 2n is basically the same as the repeater 2a of FIG. 2, but the output of the fire confirmation signal E4 to the receiver 1 for the residential building at the terminal repeater 2n installed in the same alert area. A disconnection monitoring resistor 100 is connected to the circuit portion via a relay contact d2 of a disconnection detection relay D of the disconnection detection circuit 22.
[0088]
Furthermore, the disconnection detection circuit 22 provided in the repeaters 2a to 2n is supplied with power to the input terminal 102 for inputting the power supply voltage of + 24V from the power supply line 8 from the receiver 1 for the residential building and to the disconnection detection circuit 22 of the next-stage repeater. An output terminal 104 that outputs a voltage + 24V is provided. When a disconnection of the sensor line 6a is detected, + 24V from the input terminal 102 is supplied to the output terminal 104. The output terminal 104 of the disconnection detection circuit 22 of the repeater 2a located at the preceding stage passes through the intermediate repeater to the input terminal 102 of the disconnection detection circuit 22 of the final stage repeater 2n via the disconnection detection crossover line 13. Connected.
[0089]
4 shows the repeaters 2a and 2n, the output terminal 104 of each disconnection detection circuit 22 is also connected to the next-stage repeater for the repeaters located in the preceding stage of the other last-stage repeater 2n. 2a is connected in parallel to the input terminal 102 of the disconnection detection circuit 22a.
When the disconnection detection crossover 13 is connected to the repeater 2a and the last-stage repeater 2n, the sensor line 6a of the repeater 2a is disconnected and the disconnection detection circuit 22 detects disconnection. Power supply voltage + 24V is supplied to the output terminal 104 and supplied to the input terminal 102 of the disconnection detection circuit 22 of the repeater 2n at the final stage via the disconnection detection crossover 13.
[0090]
For this reason, the disconnection detection relay D of the disconnection detection circuit 22 provided in the last-stage repeater 2n receiving the power supply voltage + 24V from the input terminal 102 is activated, and the relay contact d2 connected to the terminal of the fire alarm signal line 9 is operated. To create a pseudo disconnection. Therefore, in the residential building receiver 1 of FIG. 3, the disconnection detection circuit 92 detects the disconnection of the fire alarm signal line 9, and the control unit 76 causes the display unit 78 to display the disconnection.
[0091]
Further, the disconnection monitoring of the fire alarm signal line 9 for sending the fire confirmation signal E4 to the dwelling receiver 1 is performed by connecting the resistance 100 for disconnection monitoring to the relay 2n at the final stage via the relay contact d2 as shown in FIG. A weak current determined by the resistor 100 is supplied to the fire alarm signal line 9, and this is monitored by the disconnection detection circuit 92 of the receiver 1 for residential buildings shown in FIG. If there is a disconnection in the fire alarm signal line 9, in the receiver 1 for residential buildings, the disconnection detection circuit 92 detects the disconnection, and the control unit 76 causes the display unit 78 to display the disconnection.
[0092]
The disconnection display of the fire alarm signal line 9 in the receiver 1 for residential buildings cannot be distinguished from the disconnection display of the sensor lines 6a to 6n of the repeaters 2a to 2n, but the disconnection on the side of the sensor lines 6a to 6n is for dwelling units. Since the disconnection display is simultaneously performed on the receivers 3a to 3n side, the disconnection of the fire alarm signal line 8 or the detector line 6a to 6a It can be distinguished whether it is a disconnection on the 6n side.
[0093]
In addition, although the system configuration of FIG. 1 takes the specific floor of the building, for example, the dwelling units A1 to An on the first floor as an example, the equipment on the dwelling unit side of the plurality of floors is actually divided into floors with respect to the receiver 1 for the residential building. The system configuration similarly connected by the signal line between the receivers 1 for residential buildings is taken. In the above embodiment, the repeaters 2a to 2n are provided independently, but may be housed in the casings of the outdoor displays 4a to 4n and the receivers 3a to 3n. Furthermore, the timer time of 2 to 5 minutes of the second timer 36 provided in the dwelling unit receiver 3a can be arbitrarily variably set corresponding to the environment at the site.
[0094]
【The invention's effect】
As described above, according to the fire alarm system for apartment houses according to the present invention, the fire detectors and repeaters of each dwelling unit are operated by the power supply from the receiver for the dwelling unit. Therefore, even if the power supply to the receiver for the dwelling unit is cut off, the fire of the dwelling unit can be reliably monitored.
[0095]
In addition, if a voltage signal is used for the fire confirmation signal from the dwelling unit receiver to the repeater, and the breaker of the voltage signal is detected by the repeater, the fire confirmation signal is sent from the dwelling unit receiver. Therefore, even when a voltage signal is interrupted due to a power outage at the dwelling unit receiver, a fire confirmation signal is immediately output to the dwelling unit receiver when the fire detector signal is received. A fire alarm can be given by the ridge receiver, and even if the dwelling unit is blacked out, it can be directly monitored by the ridge receiver, so high reliability can be obtained.
[0096]
Furthermore, after the fire confirmation is transferred from the repeater to the residential building receiver based on the fire confirmation output from the receiver for the dwelling unit, the release of the fire confirmation signal output status at the repeater will be released. This can only be done from the receiver, and it is possible to conduct on-site investigations after the fire is reported at the dwelling unit.
[Brief description of the drawings]
FIG. 1 is a block diagram of a system configuration of the present invention.
FIG. 2 is a circuit block diagram of an embodiment of the repeater, the dwelling unit receiver, and the outdoor display of FIG.
3 is a circuit block diagram of an embodiment of the receiver for a residential building of FIG.
4 is a circuit block diagram of an embodiment for realizing a disconnection monitoring function between the repeaters of FIG. 1;
[Explanation of symbols]
A1-An: Dwelling unit
1: Receiver for residential building
2a to 2n: Repeater
3a-3n: Receiver for dwelling unit
4a to 4n: outdoor display
5a-5n: Fire detector (self-healing type)
6a-6n: Sensor line
7, 24, 100: Disconnection detection resistor
8: Power line
9: Fire signal line
10: Confirmation signal line
11: Control signal line
12: Voice warning signal line
13: Disconnection detection crossover
14, 30, 74: receiving circuit
15: Holding relay circuit
16: Low voltage circuit
18: Photocoupler
20: holding circuit
22, 45, 92: Disconnection detection circuit
32, 76: Control unit
34: First timer (10 seconds)
36: Second timer (2 to 5 minutes)
40: Fire confirmation switch
42: Recovery switch
44: Sound stop switch
52, 86: Speech synthesis unit
56, 70, 89: Speaker
62, 96: Power supply unit
64: Detection circuit
66: Fire lights
84: Matrix circuit
102: Input terminal
104: Output terminal
L, R: Reception relay switch
B: Audio output relay
D: Disconnection detection relay
F: Confirmation reception relay
G: Speaker switching relay
H, M: Holding relay
K, T: Fire confirmation relay
FA: Representative fire relay
R1-Rn: District relay

Claims (10)

各住戸に、自己復旧型の火災感知器、該火災感知器を感知器回線を介して接続する中継器、及び該中継器が前記火災感知器の発報を受信した際に出力する作動信号を受信して火災警報を行うと共に住戸からの電源供給を受けて動作する住戸用受信機を少なくとも設け、管理人室等の中央に前記中継器からの火災確定信号を受信して火災警報を行う住棟用受信機を設け、前記各住戸の火災感知器及び中継器を住棟用受信機からの電源供給により動作するように接続した共同住宅用火災報知システムにあって、
前記住戸用受信機に、通常時に前記中継器に有電圧信号を出力し、前記中継器からの作動信号を受信してタイマを起動してタイムアップした場合及び住戸用受信機への電源供給が停止した場合の各々について前記有電圧信号を遮断する受信機回路部を設け、
前記中継器に、前記火災感知器の発報を受信した際に、前記住戸用受信機からの有電圧信号を検出している場合には住戸用受信機に作動信号を出力し、その後に住戸用受信機からの有電圧信号の遮断を検出した場合には火災確定信号を前記住棟用受信機に出力し、また前記火災感知器の発報を受信した際に、前記住戸用受信機からの有電圧信号の遮断を検出している場合には、直ちに火災確定信号を住棟用受信機に出力して前記住棟用受信機で火災警報を行わせる中継器回路部を設けたことを特徴とする共同住宅用火災報知システム。
A self-restoring fire detector, a repeater connecting the fire detector via a sensor line, and an operation signal output when the repeater receives a notification of the fire detector are provided to each dwelling unit. Residential units that receive a fire alarm and receive a fire alarm signal from the repeater in the center of a manager's room, etc. In the fire alarm system for apartment houses, provided with a receiver for the building, and connected to operate the fire detectors and relays of each dwelling unit by power supply from the receiver for the residential building,
When a voltage signal is output to the repeater at the normal time to the receiver for the dwelling unit, when an operation signal is received from the repeater and a timer is started and the time is up, and the power supply to the receiver for the dwelling unit is Provide a receiver circuit unit that cuts off the voltage signal for each of when stopped,
When receiving a voltage signal from the dwelling unit receiver when receiving the fire detector notification, the relay unit outputs an operation signal to the dwelling unit receiver, and then the dwelling unit When the interruption of the voltage signal from the receiver for the house is detected, a fire confirmation signal is output to the receiver for the residential building, and when the alarm of the fire detector is received, the receiver for the house unit is received. A relay circuit is provided that immediately outputs a fire confirmation signal to the receiver for a residential building and issues a fire alarm at the receiver for the residential building when it detects the interruption of the voltage signal from A fire alarm system for apartment houses.
請求項1記載の共同住宅用火災報知システムに於いて、前記住戸用受信機の受信機回路部は、前記タイマの起動中に火災確認スイッチの操作を検出した場合は、タイマ設定時間に関係なく直ちに前記中継器に出力している有電圧信号を遮断することを特徴とする共同住宅用火災報知システム。2. The fire alarm system for apartment houses according to claim 1, wherein the receiver circuit unit of the receiver for dwelling unit detects the operation of the fire confirmation switch during the activation of the timer, regardless of the timer setting time. Immediately shutting off the voltage signal output to the repeater. 請求項1記載の共同住宅用火災報知システムに於いて、前記住戸用受信機の受信機回路部は、前記タイマの起動中に復旧スイッチの操作を検出した場合は、前記中継器からの作動信号を受信していないことを条件に復旧処理を行うことを特徴とする共同住宅用火災報知システム。2. The fire alarm system for apartment houses according to claim 1, wherein the receiver circuit unit of the receiver for dwelling unit detects an operation of a recovery switch while starting the timer, and an operation signal from the repeater. A fire alarm system for an apartment house, characterized in that recovery processing is performed on the condition that it has not been received. 請求項1又は2記載の共同住宅用火災報知システムに於いて、
前記住戸用受信機の受信機回路部は、信号線を介して前記中継器に設けたフォトカプラの発光素子に有電圧信号を出力して発光駆動し、前記タイマがタイムアップした場合、タイマ起動中に火災確認スイッチの操作を検出した場合及び住戸用受信機への電源供給が停止した場合の各々について前記有電圧信号を遮断して前記フォトカプラの発光駆動を停止し、
前記中継器の中継器回路部は、前記フォトカプラの受光素子の受光出力がなくなったことで前記有電圧信号の遮断を検出することを特徴とする共同住宅用火災報知システム。
In the fire alarm system for apartment houses according to claim 1 or 2,
The receiver circuit unit of the receiver for dwelling unit outputs a voltage signal to the light emitting element of the photocoupler provided in the repeater via the signal line to drive the light emission, and when the timer expires, the timer starts When the operation of the fire confirmation switch is detected and when the power supply to the dwelling unit receiver is stopped, the voltage signal is cut off to stop the light-emitting drive of the photocoupler,
The fire alarm system for an apartment house, wherein the repeater circuit unit of the repeater detects the interruption of the voltage signal due to the absence of the light receiving output of the light receiving element of the photocoupler.
請求項1乃至4記載の共同住宅用火災報知システムに於いて、
前記住戸用受信機の受信機回路部は、前記中継器からの作動信号を所定時間継続して受信した場合に該作動信号を自己保持すると共に前記中継器に保持信号を出力し、前記中継器からの作動信号を所定時間継続して受信できなかった場合に復旧処理を行い、
前記中継器の中継器回路部は、前記火災感知器からの発報信号を受信した際に、住戸用受信機からの有電圧信号を検出していた場合は前記住棟用受信機に対する火災確定信号の出力許容状態を作り出し、該出力許容状態で前記住戸用受信機からの前記保持信号を受信して前記出力許容状態を保持し、該出力許容状態を保持した状態で前記住戸用受信機からの有電圧信号の遮断を検出した場合に、前記住棟用受信機に火災確定信号を出力し、続いて前記住棟用受信機の火災受信に基づいて出力される確認信号(火災代表信号)を受信した場合に、前記住戸用受信機からの保持信号の入力を遮断すると共に前記出力許容状態を継続保持し、更に住戸用受信機への作動信号を継続保持することを特徴とする共同住宅用火災報知システム。
In the fire alarm system for apartment houses according to claims 1 to 4,
The receiver circuit unit of the receiver for dwelling unit self-holds the operation signal when receiving the operation signal from the repeater for a predetermined time and outputs a hold signal to the repeater. If the operation signal from is not received continuously for a predetermined time, recovery processing is performed,
When the repeater circuit unit of the repeater detects the voltage signal from the receiver for the dwelling unit when receiving the alarm signal from the fire detector, the fire for the receiver for the dwelling unit is detected. An output permissible state of a definite signal is created, the holding signal from the dwelling unit receiver is received in the output permissible state, the output permissible state is maintained, and the dwelling unit receiver is maintained in the state where the output permissible state is maintained A fire confirmation signal is output to the residential building receiver when a block of a voltage signal from the housing is detected, and then a confirmation signal (fire is output based on the fire reception of the residential building receiver) When the representative signal) is received, the input of the holding signal from the dwelling unit receiver is cut off, the output allowable state is continuously held, and the operation signal to the dwelling unit receiver is further held. Fire alarm system for apartment houses.
請求項5記載の共同住宅用火災報知システムに於いて、前記中継器の中継器回路部は、前記住棟用受信機からの確認信号が断たれた際に、前記火災確定信号の出力許容状態の保持および前記住戸用受信機への作動信号の保持の各々を解除することを特徴とする共同住宅用火災報知システム。6. The fire alarm system for an apartment house according to claim 5, wherein when the confirmation signal from the receiver for the residential building is cut off, the repeater circuit part of the repeater is allowed to output the fire confirmation signal. A fire alarm system for an apartment house, wherein the holding of the state and the holding of the operation signal to the dwelling unit receiver are canceled. 請求項6記載の共同住宅用火災報知システムに於いて、前記住戸用受信機の受信機回路部は、前記中継器に保持信号を出力した後に住棟用受信機からの確認信号に基づく中継器側での該保持信号の遮断を検出すると、前記中継器からの作動信号が断たれた際に初期状態に復旧することを特徴とする共同住宅用火災報知システム。7. The fire alarm system for an apartment house according to claim 6, wherein the receiver circuit section of the dwelling unit receiver outputs a holding signal to the repeater and then repeats based on a confirmation signal from the dwelling receiver. When the interruption of the holding signal on the side is detected, the fire alarm system for an apartment house is restored to the initial state when the operation signal from the repeater is cut off. 請求項5乃至7のいずれかに記載の共同住宅用火災報知システムに於いて、
前記中継器の中継器回路部は、前記住戸用受信機から保持信号を受信すると、戸外表示器に電源供給兼信号線を介して通常時供給している所定の電源電圧とは異なる電源電圧となる火災信号を出力し、
前記戸外表示器は、通常時に電源供給兼信号線により所定の電源電圧を前記中継器から受けて動作しており、通常時の電源電圧とは異なる電源電圧の火災信号を検出すると、火災灯を点滅することを特徴とする共同住宅用火災報知システム。
In the fire alarm system for apartment houses in any one of Claims 5 thru | or 7,
When the repeater circuit unit of the repeater receives a holding signal from the receiver for dwelling units, a power supply voltage different from a predetermined power supply voltage that is normally supplied to the outdoor display device via a power supply and signal line Outputs a fire signal
The outdoor indicator is operated by receiving a predetermined power supply voltage from the repeater through a power supply / signal line in a normal state, and when a fire signal having a power supply voltage different from the normal power supply voltage is detected, a fire lamp is turned on. A fire alarm system for apartment houses, characterized by flashing.
各住戸に設けられ、住棟用受信機からの電源供給を受けて動作する自己復旧型の火災感知器を感知器回線を介して接続し、前記火災感知器の発報を受信した際に作動信号を住戸からの電源供給を受けて動作する住戸用受信機に出力して火災警報を行わせ、更に、管理人室等の中央に設けられた住棟用受信機に火災確定信号を出力して火災警報を行わせ、前記住棟用受信機からの電源供給により動作するように接続した共同住宅用火災報知システムの中継器に於いて、
前記火災感知器の発報を受信した際に、前記住戸用受信機からの有電圧信号を検出している場合には住戸用受信機に作動信号を出力し、その後に住戸用受信機からの有電圧信号の遮断を検出した場合には火災確定信号を前記住棟用受信機に出力し、また前記火災感知器の発報を受信した際に、前記住戸用受信機からの有電圧信号の遮断を検出している場合には、直ちに火災確定信号を住棟用受信機に出力して前記住棟用受信機で火災警報を行わせる中継器回路部を設けたことを特徴とする共同住宅用火災報知システムの中継器。
Connected with a self-healing fire detector that is installed in each dwelling unit and operates by receiving power from the receiver for the residence building, and operates when a fire alarm is received. A signal is output to the receiver for dwelling units that operates by receiving power supply from the dwelling unit to fire alarm, and a fire confirmation signal is output to the receiver for dwelling units installed in the center of the manager's room etc. In a repeater of a fire alarm system for apartment houses connected to be operated by power supply from the receiver for the residential building.
When receiving the alarm signal from the fire detector, if a voltage signal from the dwelling unit receiver is detected, an operation signal is output to the dwelling unit receiver, and then from the dwelling unit receiver. When the interruption of the voltage signal is detected, the fire confirmation signal is output to the receiver for the residential building, and the voltage signal from the receiver for the housing unit is received when the fire detector is notified. A relay circuit unit is provided that immediately outputs a fire confirmation signal to a receiver for a residential building and issues a fire alarm at the receiver for the residential building when a blockage of the building is detected. Repeater for fire alarm system for apartment houses.
請求項9記載の共同住宅用火災報知システムの中継器に於いて、前記中継器の中継器回路部は、前記火災感知器からの発報信号を受信した際に、住戸用受信機からの有電圧信号を検出している場合は前記住棟用受信機に対する火災確定信号の出力許容状態を作り出し、該出力許容状態で前記住戸用受信機からの前記保持信号を受信して前記出力許容状態を保持し、該出力許容状態を保持した状態で前記住戸用受信機からの有電圧信号の遮断を検出した場合に、前記住棟用受信機に火災確定信号を出力し、続いて前記住棟用受信機の火災受信に基づいて出力される確認信号(火災代表信号)を受信した場合に、前記住戸用受信機からの保持信号を遮断すると共に前記出力許容状態を継続保持し、更に住戸用受信機への作動信号を継続保持することを特徴とする共同住宅用火災報知システムの中継器。10. The repeater of the fire alarm system for apartment houses according to claim 9, wherein the repeater circuit section of the repeater receives a notification signal from the fire detector and receives a notification signal from the dwelling unit receiver. When a voltage signal is detected, an output permission state of a fire confirmation signal for the receiver for the residential building is created, and the holding signal from the receiver for the housing unit is received in the output permission state and the output permission state And when a blocking of a voltage signal from the dwelling unit receiver is detected in a state where the output permissible state is held, a fire confirmation signal is output to the dwelling unit receiver, and then When the confirmation signal (fire representative signal) output based on the fire reception of the receiver for the residential building is received, the holding signal from the receiver for the dwelling unit is cut off and the output permission state is continuously maintained. Continue to hold the operation signal to the receiver for dwelling units. Repeater joint residential fire alarm system according to claim.
JP29625396A 1996-11-08 1996-11-08 Fire alarm system and relay for apartment house Expired - Fee Related JP3638184B2 (en)

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