JPS5844476Y2 - Simple fire alarm - Google Patents
Simple fire alarmInfo
- Publication number
- JPS5844476Y2 JPS5844476Y2 JP8414179U JP8414179U JPS5844476Y2 JP S5844476 Y2 JPS5844476 Y2 JP S5844476Y2 JP 8414179 U JP8414179 U JP 8414179U JP 8414179 U JP8414179 U JP 8414179U JP S5844476 Y2 JPS5844476 Y2 JP S5844476Y2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- alarm
- voltage
- circuit
- comparator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Emergency Alarm Devices (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Description
【考案の詳細な説明】
この考案は火災感知器とベルなどの警報器と電源として
の電池とが１個のケースに収納され、簡単に天井面に取
り付けることにより火災を監視するようにした家庭など
で多く使用される簡易型火災警報器に関する。[Detailed explanation of the invention] This invention is a home appliance that houses a fire detector, an alarm such as a bell, and a battery as a power source in one case, and can be easily attached to the ceiling to monitor fires. Regarding simple fire alarms that are often used in
簡易型火災警報器としてイオン式斗たは光電式の煙検出
部を備えたものが知られているが、例えば充電式の警報
器では発振器、増幅器および同期回路としてのＡＮｒ）
回路とでなる煙検出回路とベルなどを動作させる警報回
路の主要部分が集積回路（以下単にＩＣと言う）で構成
されており、さらにこのＩＣ中にはこの警報器の電源で
ある電池の消耗を監視し所定値への電圧低下で警報を発
するためのコンパレータが設けられていた。Simple fire alarms equipped with ion or photoelectric smoke detectors are known, but for example, rechargeable alarms use ANr as an oscillator, amplifier, and synchronous circuit.
The main parts of the smoke detection circuit and the alarm circuit that operates the bell etc. are composed of integrated circuits (hereinafter simply referred to as ICs). A comparator was installed to monitor the voltage and issue an alarm if the voltage dropped to a predetermined value.
コノコンパレータばその一方の入力に監視する電池の一
端が、他方の入力にツェナダイオードが接続され、かつ
そのツェナ電圧は電池が消耗し警報を発したい所定の電
圧値に選ばれているので、電池が消耗しツェナダイオー
ドのツェナ電圧以下になると、コンパレータが動作し警
報を発するように構成されていた。One end of the battery to be monitored is connected to one input of the cono comparator, and a zener diode is connected to the other input, and the zener voltage is selected to be a predetermined voltage value at which an alarm is issued when the battery is depleted. The comparator was configured to operate and issue an alarm when the Zener voltage of the Zener diode was depleted and dropped below the Zener voltage of the Zener diode.
しかし、比較的低いツェナ電圧で安定した動作をするツ
ェナダイオードは高価であり、捷た警報器を多数製造す
る場合同一のツェナ電圧を有するツェナダイオードを得
ることが難しく、さらに一定のツェナ電圧を有するツェ
ナダイオードが多数得られても、上記ＩＣ中のコンパレ
ータのＰＮ接合部での電圧降下が各ＩＣにおいてばらつ
き、かならずしも所定の値でコンパレータが動作せず正
しい電池電圧の降下で警報を発することができなかった
。However, Zener diodes that operate stably at relatively low Zener voltages are expensive, and when manufacturing a large number of switched alarms, it is difficult to obtain Zener diodes with the same Zener voltage, and furthermore, Zener diodes that have a constant Zener voltage Even if a large number of Zener diodes are obtained, the voltage drop at the PN junction of the comparator in the above IC will vary, and the comparator will not always operate at a predetermined value, making it impossible to issue an alarm at the correct battery voltage drop. There wasn't.
この考案は以上の点にかんがみツェナダイオードの特性
を巧みに利用することにより、ツェナダイオードおよび
ＩＣの特性にばらつきがあっても電池の所定値への電圧
降下で警報を発することができる簡易型火災警報器を提
供するものである。In consideration of the above points, this invention cleverly utilizes the characteristics of Zener diodes to create a simple fire alarm system that can issue an alarm when the battery voltage drops to a predetermined value even if there are variations in the characteristics of Zener diodes and ICs. It provides an alarm.
以下この考案の簡易型火災警報器の１実施例を光電式を
例にして第１図について説明する。Hereinafter, one embodiment of the simple fire alarm of this invention will be described with reference to FIG. 1, taking a photoelectric type as an example.
図において、１はこの警報器の電源としての電池、２は
電池１に並列接続されたＩＣで、このＩＣ２には発振器
３、増幅器４、ＡＮＤ回路５、ＯＲ回路６釦よびコンパ
レータ７が収容されていて、発振器３には光源としての
発光ダイオード８が接続され一定周期でパルス点灯され
るように構成されると共に、煙の存在により生ずる上記
光源の散乱光を受光する太陽電池９がその出力を増幅す
るように増幅器４に接続される。In the figure, 1 is a battery as a power source for this alarm, 2 is an IC connected in parallel to the battery 1, and this IC 2 houses an oscillator 3, an amplifier 4, an AND circuit 5, an OR circuit 6 button, and a comparator 7. A light emitting diode 8 as a light source is connected to the oscillator 3 and is configured to pulse light at a constant period, and a solar cell 9 receives the scattered light of the light source caused by the presence of smoke and outputs the light. It is connected to an amplifier 4 for amplification.
筐た上記発振器３と増幅器４との出力は共にＡＮＤ回路
５の入力と接続され、発光ダイオード８０点灯と同期し
た増隅器４の出力を後段のＯＲ回路６に伝達するように
接続されて煙検出回路が構成される。The outputs of the oscillator 3 and amplifier 4 are both connected to the input of an AND circuit 5, which is connected to transmit the output of the magnifier 4 synchronized with the lighting of the light emitting diode 80 to the OR circuit 6 at the subsequent stage. A detection circuit is configured.
このＯＲ回路６の出力は、ＩＣ２外の電池１に継電器Ａ
を介して並列接続されたトランジスタ１０のベースと接
続され、昔た継電器Ａのメーク接点ａを介してブザー１
１が電池１に並列接続されて警報回路が構成される。The output of this OR circuit 6 is connected to the battery 1 outside the IC 2 by the relay A.
The buzzer 1 is connected to the base of the transistor 10 connected in parallel through the
1 is connected in parallel to battery 1 to form an alarm circuit.
さらにこの考案の要部に関する電池１の電圧の低下を監
視するコンパレータ７の反転入力は電池１の正端子ど接
続され、筐たその非反転入力は電池１に並列接続された
電圧調整用の可変抵抗１２とツェナダイオード１３との
直列回路の画素子１２．１３の接続点に接続される。Furthermore, the inverting input of the comparator 7 that monitors the voltage drop of the battery 1, which is related to the main part of this invention, is connected to the positive terminal of the battery 1, and the non-inverting input of the comparator 7 is connected to the positive terminal of the battery 1, and the non-inverting input of the comparator 7 is connected to the variable voltage regulator connected in parallel to the battery 1. It is connected to a connection point between pixel elements 12 and 13 of a series circuit of a resistor 12 and a Zener diode 13.
この場合ツェナダイオード１３のツェナ電圧は、第２図
に示すように電池１が消耗し警報を発したい電圧値Ｖａ
よりもやや大きい電圧値Ｖｚに選ばれる。In this case, the zener voltage of the zener diode 13 is a voltage value Va at which the battery 1 is exhausted and the alarm is desired to be issued, as shown in FIG.
The voltage value Vz is selected to be slightly larger than the voltage value Vz.
次に上記警報器の動作を説明すれば、常時は発振器３の
出力により発光ダイオード８は周期的に点灯されている
だけであるが、火災により煙が生じると上記光源よりの
光は散乱され、その散乱光が太陽電池９を照射しその出
力は増幅器４で増幅されて発振器３の出力とともにＡＮ
Ｄ回路５を動作させＯＲ回路６を介してトランジスタ１
０を導通させ継電器Ａを動作させる。Next, to explain the operation of the alarm, the light emitting diode 8 is only periodically lit by the output of the oscillator 3, but when smoke is generated due to a fire, the light from the light source is scattered. The scattered light illuminates the solar cell 9, and its output is amplified by the amplifier 4, and together with the output of the oscillator 3, the AN
The D circuit 5 is operated and the transistor 1 is connected via the OR circuit 6.
0 conducts and operates relay A.
そしてこの継電器Ａのメーク接点ａが閉じてブザー１１
が鳴動され火災が報知される。Then, the make contact a of this relay A closes and the buzzer 11
is sounded to alert you to the fire.
寸た電池１が消耗しその電圧がＶａに低下するとコンパ
レータ７が動作しＯＲ回路６を介してトランジスタ１０
が導通し、火災の場合と同様にブザー１１が鳴動され警
報が発せられる。When the battery 1 is exhausted and its voltage drops to Va, the comparator 7 operates and the transistor 10 is connected via the OR circuit 6.
becomes conductive, and the buzzer 11 sounds to issue an alarm in the same way as in the case of a fire.
この場合、警報を発する電池１の電圧値をＶａとし、Ｉ
Ｃ２の接合部での電圧降下を△Ｖとし、ツェナダイオー
ド１３０両端の電圧をＶａ’とすれば、各ＩＣに釦いて
上記△Ｖがばらついても、可変抵抗１２によりツェナダ
イオード１３の動作状態をその抵抗変化領域ｒにセット
し、この範囲内で上記抵抗１２の抵抗値を変えツェナダ
イオード１３の両端の電圧Ｖａ’を変えてＶ ａ ＝Ｖ
ａ’−△■一定とすることができるので、ＩＣ２および
ツェナダイオード１３の特性にばらつきがあってもコン
パレータ７は電池１の一定の電圧低下で動作する。In this case, the voltage value of battery 1 that issues an alarm is Va, and I
If the voltage drop at the junction of C2 is △V and the voltage across the Zener diode 130 is Va', even if the above △V varies due to the button on each IC, the operating state of the Zener diode 13 can be controlled by the variable resistor 12. Set it in the resistance change region r, change the resistance value of the resistor 12 within this range, change the voltage Va' across the Zener diode 13, and get Va = V.
Since a'-Δ■ can be kept constant, the comparator 7 operates with a constant voltage drop of the battery 1 even if there are variations in the characteristics of the IC 2 and the Zener diode 13.
上記実施例は光電式の簡易型火災警報器であったカ同様
のコンパレータを備えたイオン式の簡易型火災警報器に
もこの考案を実施できる。Although the above embodiment is a simple photoelectric fire alarm, this invention can also be applied to a simple ion fire alarm equipped with a similar comparator.
この考案は以上のように構成され調整することができる
ので、電池の所定値への電圧降下で正しく警報を発する
ことができる簡易型火災警報器が得られる効果がある。Since this invention can be configured and adjusted as described above, it has the effect of providing a simple fire alarm that can correctly issue an alarm when the voltage of the battery drops to a predetermined value.
第１図はこの考案の簡易型火災警報器の１実施例の回路
図、第２図は第１図の実施例に使用されるツェナダイオ
ードの特性図である。
１・・・・・・を池、２・・・・・・ＩＣ，７・・・・
・・コンパレータ、１２・・・・・・電圧調整用の可変
抵抗器、１３・・・・・・ツェナダイオード。FIG. 1 is a circuit diagram of one embodiment of the simple fire alarm of this invention, and FIG. 2 is a characteristic diagram of a Zener diode used in the embodiment of FIG. 1... is the pond, 2... is the IC, 7... is the pond.
... Comparator, 12 ... Variable resistor for voltage adjustment, 13 ... Zener diode.
Claims (1)
主要部分およびコンパレータでなる電池電源の電圧低下
を監視する回路とがＩＣで構成された簡易型火災警報器
において、上記コンパレータの一方の入力に上記電池の
一端が、會た他方の入力に上記電池に並列接続された電
圧調整用の抵抗とツェナダイオードでなる直列回路の画
素子の接続点が接続されたことを特徴とする簡易型火災
警報器。 ２、電圧調整用の抵抗が可変抵抗器である実用新案登録
請求の範囲第１項記載の簡易型火災警報器。1. In a simple fire alarm in which a photoelectric or ion type smoke detection circuit, the main parts of the alarm circuit, and a comparator circuit for monitoring the voltage drop of the battery power supply are composed of ICs, one input of the comparator is connected to the A simple fire alarm, characterized in that one end of the battery is connected to the other input to a connection point of a pixel element of a series circuit consisting of a voltage regulating resistor and a Zener diode connected in parallel to the battery. . 2. The simple fire alarm according to claim 1, wherein the voltage regulating resistor is a variable resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8414179U JPS5844476Y2 (en) | 1979-06-21 | 1979-06-21 | Simple fire alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8414179U JPS5844476Y2 (en) | 1979-06-21 | 1979-06-21 | Simple fire alarm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS565289U JPS565289U (en) | 1981-01-17 |
| JPS5844476Y2 true JPS5844476Y2 (en) | 1983-10-07 |
Family
ID=29317331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8414179U Expired JPS5844476Y2 (en) | 1979-06-21 | 1979-06-21 | Simple fire alarm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5844476Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2758651B2 (en) * | 1989-06-20 | 1998-05-28 | 松下電工株式会社 | Photoelectric detector circuit |
-
1979
- 1979-06-21 JP JP8414179U patent/JPS5844476Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS565289U (en) | 1981-01-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10234388B2 (en) | System for determining abnormality in a monitored area | |
| US4302753A (en) | Multi-function combustion detecting device | |
| JP6422965B2 (en) | System and method for multi-criteria alarms | |
| US3534351A (en) | Light coupled battery powered remote control apparatus | |
| US4346427A (en) | Control device responsive to infrared radiation | |
| JPH026392U (en) | ||
| US4186389A (en) | Sleeper's smoke-alarm clock | |
| US4185278A (en) | Obscuration type smoke detector | |
| WO1981001765A1 (en) | Self-checking photoelectric smoke detector | |
| CA1232343A (en) | Photoelectric smoke detector and alarm system | |
| US4063227A (en) | Smoke detector | |
| JPS6363857B2 (en) | ||
| JPS5844476Y2 (en) | Simple fire alarm | |
| US4017852A (en) | Apparatus for supervising leads interconnecting a plurality of self-contained abnormal condition sensing and alarm annunciating units | |
| US4101785A (en) | Smoke detector with switch means for increasing the sensitivity | |
| US4389124A (en) | Device for monitoring selected operating conditions of combustion within a solid fossil fuel burning furnace | |
| JPH04324595A (en) | Light-sensitive type smoke detector | |
| JP3208500B2 (en) | Photoelectric smoke detector | |
| EP0003662A2 (en) | Single station type fire alarm system and a multivibrator used in the detection circuitry | |
| JPS583189Y2 (en) | Kasaikantiki | |
| JPH0325266Y2 (en) | ||
| JPS6339829Y2 (en) | ||
| JPH0512869Y2 (en) | ||
| JPH0353350Y2 (en) | ||
| SU960763A1 (en) | Device for checking thermocouple serviceability |