JPH0865888A - Power-supply input controller - Google Patents
Power-supply input controllerInfo
- Publication number
- JPH0865888A JPH0865888A JP6225885A JP22588594A JPH0865888A JP H0865888 A JPH0865888 A JP H0865888A JP 6225885 A JP6225885 A JP 6225885A JP 22588594 A JP22588594 A JP 22588594A JP H0865888 A JPH0865888 A JP H0865888A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power supply
- voltage
- opening
- detection
- 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.)
- Pending
Links
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、スロットマシンのよ
うな電気機器の電源入力部に設けられる電源入力制御装
置に関連し、特にこの発明は、決められた電圧値以外の
電源電圧が電気機器に入力されるのを防止する電源入力
制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply input control device provided in a power supply input section of an electric device such as a slot machine, and more particularly, the present invention relates to a power supply voltage other than a predetermined voltage value. The present invention relates to a power input control device that prevents input to a power source.
【０００２】[0002]
【従来の技術】一般の電気機器は、ＡＣ１００ボルトや
ＡＣ２２０ボルトの商用電源に接続して使用されるが、
スロットマシンのような特定の電気機器については、商
用電源より低い電圧値（例えばＡＣ２４ボルト）の電源
に接続して使用されることがある。2. Description of the Related Art General electric equipment is used by connecting it to a commercial power source of AC100V or AC220V.
For a specific electric device such as a slot machine, it may be used by being connected to a power source having a lower voltage value (for example, AC 24 V) than a commercial power source.
【０００３】商用電源を使用する場合、電気機器を電源
に接続するための接続器具、すなわち電源プラグはその
規格が定められているが、ＡＣ２４ボルトのような低い
電圧値の電源を使用する場合の電源プラグには特別な規
格は定められていない。このため電源プラグの選定は電
気機器の製造業者に委ねられており、製造業者によって
は例えばＡＣ１００ボルト用の汎用の電源プラグを用い
る場合がある。When a commercial power source is used, the standard of a connecting device for connecting an electric device to the power source, that is, a power plug is defined, but when a power source with a low voltage value such as AC 24 V is used. There are no specific standards for power plugs. Therefore, the selection of the power plug is left to the manufacturer of the electric device, and depending on the manufacturer, a general-purpose power plug for AC 100 V may be used.
【０００４】[0004]
【発明が解決しようとする課題】このような電気機器を
常に同じ者が取り扱う分には問題ないが、不慣れな者が
その電気機器を取り扱うとき、電源プラグを誤って商用
電源に接続し、これにより電気機器を損傷するおそれが
ある。大抵の電気機器には、過電流に対する保護をはか
るため、電源回路中にヒューズが設けてあるが、ヒュー
ズが溶断するまでの間、それがたとえ短時間であって
も、電気機器には決められた値よりはるかに高い電圧が
印加されて過電流が流れ、電気機器を破損することがあ
る。There is no problem in that the same person always handles such electric equipment, but when an unfamiliar person handles the electric equipment, the power plug is erroneously connected to the commercial power source, and May damage electrical equipment. Most electric devices have a fuse in the power supply circuit to protect against overcurrent.However, even if the fuse is blown for a short time, the electric device has its own choice. A voltage much higher than the specified value may be applied, resulting in overcurrent and damage to electrical equipment.
【０００５】この発明は、上記問題に着目してなされた
もので、決められた電圧値以外の電源に誤って電気機器
を電気接続しても、その電源電圧が電気機器に印加され
ることがない電源入力装置を提供することを目的とす
る。The present invention has been made in view of the above problems, and even if an electric device is erroneously electrically connected to a power source having a voltage value other than a predetermined voltage value, the power source voltage can be applied to the electric device. It is intended to provide a power supply input device that does not.
【０００６】[0006]
【課題を解決するための手段】請求項１の発明にかかる
電源入力制御装置は、電源より入力した電源電圧を電気
機器に取り込むための電源回路と、前記電源回路を開閉
する開閉手段と、前記開閉手段の開閉動作を制御する制
御手段とから成るもので、前記制御手段は、前記電源電
圧が決められた値かどうかを検出する電圧検出部と、前
記電圧検出部の検出動作に必要な検出時間の経過を計測
する時間計測部と、前記時間計測部が前記検出時間の経
過を計測するまでの間は前記開閉手段を開状態に設定
し、前記検出時間の経過を計測したときは前記電圧検出
部の検出結果に応じて前記開閉手段の開閉を制御する開
閉制御部とを備えて成る。According to a first aspect of the present invention, there is provided a power source input control device, a power source circuit for taking a power source voltage input from a power source into an electric device, an opening / closing means for opening and closing the power source circuit, and The control means controls the opening / closing operation of the opening / closing means, and the control means detects a voltage detection unit for detecting whether the power supply voltage is a predetermined value or not, and a detection necessary for the detection operation of the voltage detection unit. A time measuring unit that measures the passage of time, and the opening and closing means is set to an open state until the time measuring unit measures the passage of the detection time, and the voltage is applied when the passage of the detection time is measured. An opening / closing control unit that controls opening / closing of the opening / closing unit according to the detection result of the detection unit.
【０００７】請求項２の発明にかかる電源入力制御装置
では、前記制御手段は、上記した請求項１の構成に加え
て、前記電圧検出部の検出結果を報知する報知部を備え
ている。In the power supply input control device according to the invention of claim 2, in addition to the configuration of claim 1 described above, the control means includes an informing section for informing the detection result of the voltage detecting section.
【０００８】[0008]
【作用】電源より電源電圧が入力されると、制御手段の
電圧検出部は電源電圧が決められた値かどうかを検出す
る。その検出動作に必要な時間が経過するまでの間は、
開閉手段は電源回路を開路するため、電源電圧は電気機
器に取り込まれない。電圧検出部により電源電圧が決め
られた値であることが検出されると、開閉手段は電源回
路を閉路し、電源電圧は電気機器に取り込まれる。一
方、電圧検出部により電源電圧が決められた値でないこ
とが検出されると、開閉手段は電源回路を開路し、電源
電圧は電気機器に取り込まれない。請求項２の電源入力
制御装置では、電圧検出部の検出結果は報知部により報
知される。When the power supply voltage is input from the power supply, the voltage detection unit of the control means detects whether the power supply voltage has a predetermined value. Until the time required for the detection operation elapses,
Since the opening / closing means opens the power supply circuit, the power supply voltage is not taken into the electric device. When the voltage detector detects that the power supply voltage has a predetermined value, the switching means closes the power supply circuit, and the power supply voltage is taken into the electric device. On the other hand, when the voltage detector detects that the power supply voltage is not the predetermined value, the switching means opens the power supply circuit and the power supply voltage is not taken into the electric device. In the power supply input control device according to the second aspect, the detection result of the voltage detection unit is notified by the notification unit.
【０００９】[0009]
【実施例】図１は、この発明の一実施例である電源入力
制御装置の全体構成を示す。図示例の電源入力制御装置
は、スロットマシンのような電気機器２の電源入力部に
設けられるもので、ＡＣ２４ボルトの電源１に電源プラ
グを介して電気接続される入力端子３と、この入力端子
３より入力された電源電圧ｖを電気機器駆動回路２０へ
出力するための出力端子４とを備えている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the overall construction of a power supply input control device according to an embodiment of the present invention. The power supply input control device of the illustrated example is provided in a power supply input part of an electric device 2 such as a slot machine, and has an input terminal 3 electrically connected to a power supply 1 of 24 VAC via a power supply plug, and this input terminal. 3 and an output terminal 4 for outputting the power source voltage v input from the electric power source driving circuit 20 to the electric device drive circuit 20.
【００１０】前記入力端子３と出力端子４とを結ぶ電源
回路５には、この電源回路５を開閉するソリッドステー
トリレーのような開閉装置６が設けてある。この開閉装
置６は、前記入力端子３よりＡＣ２４ボルトの決められ
た電源電圧が入力されたとき、電源回路５を閉路し、一
方、前記入力端子３よりＡＣ２４ボルト以外（例えばＡ
Ｃ１００ボルト）の電源電圧が入力されたとき、電源回
路５を開路する。この開閉装置６は、図中、破線で囲ま
れた制御回路７によりその開閉動作が制御される。A power supply circuit 5 connecting the input terminal 3 and the output terminal 4 is provided with an opening / closing device 6 such as a solid state relay for opening / closing the power supply circuit 5. The switchgear 6 closes the power supply circuit 5 when a predetermined power supply voltage of 24 VAC is input from the input terminal 3, while the power supply circuit 5 is closed from the input terminal 3 other than 24 VAC (for example, A
When a power supply voltage of C100 V) is input, the power supply circuit 5 is opened. The opening / closing operation of the opening / closing device 6 is controlled by a control circuit 7 surrounded by a broken line in the drawing.
【００１１】この制御回路７は、内部電源回路８，電圧
検出回路９，時間計測回路１０，開閉制御回路１１，報
知回路１２を含んでおり、前記開閉制御回路１１と開閉
装置６とを結ぶ制御線１４には、手操作される電源スイ
ッチ（図示せず）を備えた電源スイッチ回路１３が介装
されている。前記電源スイッチは電気機器２を駆動した
り、駆動を停止したりする際に投入される。前記内部電
源回路８は、入力端子３より入力した電源電圧ｖより内
部回路駆動用の直流電圧ＶCCを生成し、この直流電圧Ｖ
CCを前記電圧検出回路９，時間計測回路１０，報知回路
１２などへ与える。The control circuit 7 includes an internal power supply circuit 8, a voltage detection circuit 9, a time measuring circuit 10, an opening / closing control circuit 11 and a notification circuit 12, and controls the connection between the opening / closing control circuit 11 and the opening / closing device 6. A power switch circuit 13 including a manually operated power switch (not shown) is provided on the line 14. The power switch is turned on when driving the electric device 2 or stopping the driving. The internal power supply circuit 8 generates a DC voltage V CC for driving an internal circuit from the power supply voltage v input from the input terminal 3, and this DC voltage V CC
CC is applied to the voltage detection circuit 9, the time measurement circuit 10, the notification circuit 12, and the like.
【００１２】前記電圧検出回路９は、前記入力端子３よ
り入力した電源電圧ｖが決められた値（この例ではＡＣ
２４ボルト）かどうかを検出し、もしＡＣ２４ボルトで
あれば、ハイレベルの検出信号Ａを、もし決められた値
でなければ、ローレベルの検出信号Ａを、それぞれ出力
する。前記時間計測回路１０は、前記電圧検出回路９の
検出動作に必要な検出時間の経過を計測するためのもの
で、前記検出時間が経過するまでの間はその計測出力Ｂ
はローレベルであり、前記検出時間が経過した時点で計
測出力Ｂはハイレベルとなる。The voltage detecting circuit 9 is arranged so that the power supply voltage v input from the input terminal 3 has a predetermined value (AC in this example).
24 volt), and outputs a high-level detection signal A if it is AC 24 volt and a low-level detection signal A if it is not a predetermined value. The time measuring circuit 10 is for measuring the elapse of the detection time necessary for the detection operation of the voltage detecting circuit 9, and outputs the measurement output B until the detection time elapses.
Is a low level, and the measurement output B becomes a high level when the detection time elapses.
【００１３】前記開閉制御回路１１は、例えばナンド回
路で構成され、前記電圧検出回路９の検出信号Ａおよび
前記時間計測回路１０の計測出力Ｂがともにハイレベル
のとき、すなわち入力端子３より入力した電源電圧ｖが
ＡＣ２４ボルトでありかつ前記電圧検出回路９の検出動
作に必要な検出時間が経過したとき、その出力である制
御信号Ｃはローレベルとなる。これに対し、前記電圧検
出回路９の検出信号Ａと前記時間計測回路１０の計測出
力Ｂのいずれか一方がローレベルのとき、すなわち入力
端子３より入力した電源電圧ｖがＡＣ２４ボルトでない
か、または前記電圧検出回路９の検出動作に必要な検出
時間が経過していないとき、前記制御信号Ｃはハイレベ
ルとなる。前記制御信号Ｃは電源スイッチ回路１３を経
て前記開閉装置６に与えられ、制御信号Ｃがローレベル
のときは、電源スイッチ回路１３の電源スイッチがＯＮ
であることを条件として前記開閉装置６は電源回路５を
閉路し、ハイレベルのときは、前記開閉装置６は電源回
路５を開路する。The switching control circuit 11 is composed of, for example, a NAND circuit, and when the detection signal A of the voltage detection circuit 9 and the measurement output B of the time measurement circuit 10 are both at high level, that is, input from the input terminal 3. When the power supply voltage v is AC 24 V and the detection time required for the detection operation of the voltage detection circuit 9 has elapsed, the output control signal C becomes low level. On the other hand, when one of the detection signal A of the voltage detection circuit 9 and the measurement output B of the time measurement circuit 10 is at a low level, that is, the power supply voltage v input from the input terminal 3 is not AC 24 V, or When the detection time required for the detection operation of the voltage detection circuit 9 has not elapsed, the control signal C becomes high level. The control signal C is given to the switchgear 6 through the power switch circuit 13, and when the control signal C is at a low level, the power switch of the power switch circuit 13 is turned on.
The switchgear 6 closes the power supply circuit 5 on condition that the above condition holds, and when the switch is at a high level, the switchgear 6 opens the power supply circuit 5.
【００１４】図２は、上記した制御回路７の具体例を示
す。図中、５は入力端子３と出力端子４との間を結ぶ電
源回路であり、この電源回路５中にソリッドステートリ
レーより成る開閉装置６が介装されている。入力端子３
には電源が、出力端子４には電気機器駆動回路が、それ
ぞれ電気接続される。FIG. 2 shows a specific example of the control circuit 7 described above. In the figure, 5 is a power supply circuit that connects between the input terminal 3 and the output terminal 4, and a switchgear 6 made of a solid state relay is interposed in the power supply circuit 5. Input terminal 3
A power source is electrically connected to the output terminal 4, and an electric device drive circuit is electrically connected to the output terminal 4.
【００１５】前記制御回路７は、内部電源回路８，電圧
検出回路９，時間計測回路１０，開閉制御回路１１，報
知回路１２，電源スイッチ回路１３を含む。前記内部電
源回路８は、内部回路駆動用の一定の直流電圧Ｖccを得
るためのもので、全波整流回路を構成する４個のダイオ
ードＤ１〜Ｄ４，降圧用の抵抗Ｒ１，定電圧発生用のツ
エナーダイオードＤ５，平滑用のコンデンサＣ１，Ｃ２
を含んでいる。The control circuit 7 includes an internal power supply circuit 8, a voltage detection circuit 9, a time measuring circuit 10, an opening / closing control circuit 11, a notification circuit 12, and a power supply switch circuit 13. The internal power supply circuit 8, for obtaining a constant DC voltage V cc for the internal circuit drive, full-wave rectifier circuit of four diodes constituting the D1 to D4, the step-down resistor for R1, a constant voltage generator Zener diode D5, smoothing capacitors C1 and C2
Is included.
【００１６】前記電圧検出回路９は、分圧用の抵抗Ｒ
４，Ｒ５，平滑用コンデンサＣ３，コンパレータ２２，
基準電圧設定用の抵抗Ｒ４，Ｒ５を含み、前記コンパレ
ータ２２は、入力端子３より入力した電源電圧ｖの大き
さに比例した平滑出力を基準電圧と比較し、前記電源電
圧ｖがＡＣ２４ボルト以下であれば、ハイレベルの検出
信号Ａを、ＡＣ２４ボルトを越えていれば（例えばＡＣ
１００ボルト）、ローレベルの検出信号Ａを、それぞれ
出力する。なお図中、Ｒ６はプルアップ抵抗である。The voltage detection circuit 9 has a resistor R for voltage division.
4, R5, smoothing capacitor C3, comparator 22,
The comparator 22 includes resistors R4 and R5 for setting a reference voltage, and the comparator 22 compares a smoothed output proportional to the magnitude of the power supply voltage v input from the input terminal 3 with a reference voltage. If so, if the high-level detection signal A exceeds AC 24 volts (for example, AC
100 volt) and a low level detection signal A are output respectively. In the figure, R6 is a pull-up resistor.
【００１７】前記時間計測回路１０は、ダイオードＤ
６，抵抗Ｒ７，コンデンサＣ４を含んでおり、直流電圧
Ｖccが与えられると、前記抵抗Ｒ７とコンデンサＣ４と
で決まる時定数に応じた時間だけ遅れて計測出力Ｂが立
ち上がる。この時間遅れは、前記電圧検出回路９の検出
動作に必要な検出時間に対応させてある。The time measuring circuit 10 includes a diode D.
6, the resistor R7 and the capacitor C4 are included, and when the DC voltage Vcc is applied, the measurement output B rises with a delay according to the time constant determined by the resistor R7 and the capacitor C4. This time delay corresponds to the detection time required for the detection operation of the voltage detection circuit 9.
【００１８】前記報知回路１２は、抵抗Ｒ８と発光ダイ
オードＤ７とを含み、前記検出信号Ａがローレベルのと
き、すなわち入力端子３にＡＣ２４ボルトを越える電源
電圧ｖが与えられたとき、前記発光ダイオードＤ７が点
灯動作する。なお報知手段として発光ダイオードのよう
に視覚に訴える手段に限らず、たとえば警報ブザーのよ
うに聴覚に訴える手段を用いてもよく、また両者を併用
してもよい。The notification circuit 12 includes a resistor R8 and a light emitting diode D7, and when the detection signal A is at a low level, that is, when the power supply voltage v exceeding AC 24 V is applied to the input terminal 3, the light emitting diode is provided. D7 is turned on. The notification means is not limited to a visually appealing means such as a light emitting diode, but may be an auditory appealing means such as an alarm buzzer, or both may be used in combination.
【００１９】前記開閉制御回路１１は、ナンド回路で構
成され、前記検出信号Ａおよび計測出力Ｂがともにハイ
レベルのとき、すなわち入力端子３より入力した電源電
圧ｖがＡＣ２４ボルト以下でありかつ前記電圧検出回路
９の検出動作に必要な検出時間が経過したとき、その出
力である制御信号Ｃはローレベルとなり、それ以外のと
き、制御信号Ｃはハイレベルとなる。The switching control circuit 11 is composed of a NAND circuit, and when both the detection signal A and the measurement output B are at a high level, that is, the power supply voltage v input from the input terminal 3 is 24 V AC or less and the voltage is the same. When the detection time required for the detection operation of the detection circuit 9 has elapsed, the control signal C, which is the output thereof, is at low level, and at other times, the control signal C is at high level.
【００２０】前記電源スイッチ回路１３は、２個のナン
ド回路２３，２４，抵抗Ｒ９，低接点容量の電源スイッ
チＳＷを含んでおり、前記電源スイッチＳＷがＯＮのと
き、後段のナンド回路２４の一方の入力がハイレベルと
なる。この電源スイッチＳＷがＯＮでありかつ前記制御
信号Ｃがローレベル、従ってナンド回路２３の出力がハ
イレベルのときのみ、ナンド回路２４の出力はローレベ
ルとなり、開閉装置６は電源回路５を閉路し、それ以外
の入力の組み合わせがナンド回路２４に与えられたとき
は、前記ナンド回路２４の出力はハイレベルとなり、開
閉手段６は電源回路５を開路する。The power switch circuit 13 includes two NAND circuits 23 and 24, a resistor R9, and a low-contact-capacity power switch SW. When the power switch SW is ON, one of the NAND circuits 24 in the subsequent stage is connected. Input becomes high level. Only when the power switch SW is ON and the control signal C is at the low level, and thus the output of the NAND circuit 23 is at the high level, the output of the NAND circuit 24 becomes the low level and the switchgear 6 closes the power circuit 5. When other combinations of inputs are given to the NAND circuit 24, the output of the NAND circuit 24 becomes high level, and the opening / closing means 6 opens the power supply circuit 5.
【００２１】上記構成の電源入力制御装置において、入
力端子３にＡＣ２４ボルトの電源電圧ｖが与えられる
と、内部電源回路８でこの電源電圧ｖから一定の直流電
圧Ｖccが生成され、電圧検出回路９，時間計測回路１
０，報知回路１２，電源スイッチ回路１３へ与えられて
動作状態となる。電圧検出回路９のコンパレータ２２
は、電源電圧ｖを整流・平滑して得られた電圧と基準電
圧とを比較し、前記電源電圧ｖが決められた値かどうか
を判定する。この場合、電源電圧ｖはＡＣ２４ボルトで
あるから、前記コンパレータ２２はハイレベルの検出信
号Ａを開閉制御回路１１へ出力する。In the power supply input control device having the above structure, when the power supply voltage v of 24 V AC is applied to the input terminal 3, the internal power supply circuit 8 generates a constant DC voltage V cc from the power supply voltage v, and the voltage detection circuit. 9, time measurement circuit 1
0, the notification circuit 12, and the power supply switch circuit 13 to be in an operating state. Comparator 22 of voltage detection circuit 9
Compares the voltage obtained by rectifying and smoothing the power supply voltage v with a reference voltage to determine whether the power supply voltage v is a predetermined value. In this case, since the power supply voltage v is AC 24 V, the comparator 22 outputs the high level detection signal A to the switching control circuit 11.
【００２２】ところで前記時間計測回路１０は、前記電
圧検出回路９の検出動作に必要な検出時間が経過するま
での間はローレベルの計測出力Ｂを開閉制御回路１１へ
出力しており、この間はナンド回路より成る開閉制御回
路１１が出力する制御信号Ｃはハイレベルの状態が維持
される。この状態のとき、電源スイッチ回路１３のナン
ド回路２３の出力はローレベルであり、たとえ電源スイ
ッチＳＷがＯＮ状態であっても、ナンド回路２４の出力
はハイレベルとなり、開閉装置６は電源回路５を開路す
る。このため入力端子３に入力された電源電圧ｖは出力
端子４より電気機器駆動回路２０へ供給されない。By the way, the time measuring circuit 10 outputs the low-level measurement output B to the opening / closing control circuit 11 until the detection time required for the detection operation of the voltage detecting circuit 9 elapses. The control signal C output from the switching control circuit 11 including a NAND circuit is maintained at a high level. In this state, the output of the NAND circuit 23 of the power switch circuit 13 is at the low level, and even if the power switch SW is in the ON state, the output of the NAND circuit 24 is at the high level, and the switchgear 6 causes the power supply circuit 5 to operate. Open the circuit. Therefore, the power supply voltage v input to the input terminal 3 is not supplied to the electric device drive circuit 20 from the output terminal 4.
【００２３】前記電圧検出回路９の検出動作に必要な検
出時間が経過すると、時間計測回路１０の計測出力Ｂは
ローレベルからハイレベルへ変化し、開閉制御回路１１
にはこのハイレベルの計測出力Ｂと、前記電圧検出回路
９のハイレベルの検出信号Ａとが与えられる。これによ
り開閉制御回路１１の出力である制御信号Ｃはハイレベ
ルからローレベルに変化し、電源スイッチ回路１３のナ
ンド回路２３の出力はハイレベルとなる。もし電源スイ
ッチＳＷがＯＮ状態にあれば、ナンド回路２４の出力は
ローレベルとなり、開閉装置６は電源回路５を閉路す
る。これにより入力端子２４に入力された電源電圧ｖは
出力端子４より電気機器駆動回路２０へ供給される。When the detection time required for the detection operation of the voltage detection circuit 9 has elapsed, the measurement output B of the time measurement circuit 10 changes from low level to high level, and the switching control circuit 11
The high-level measurement output B and the high-level detection signal A of the voltage detection circuit 9 are given to the. As a result, the control signal C, which is the output of the switching control circuit 11, changes from the high level to the low level, and the output of the NAND circuit 23 of the power switch circuit 13 becomes the high level. If the power switch SW is in the ON state, the output of the NAND circuit 24 becomes low level, and the switchgear 6 closes the power circuit 5. As a result, the power supply voltage v input to the input terminal 24 is supplied to the electric device drive circuit 20 from the output terminal 4.
【００２４】つぎに入力端子３にＡＣ１００ボルトの電
源電圧ｖが与えられたとき、同様に内部電源回路８はこ
の電源電圧ｖから一定の直流電圧Ｖccを生成して、電圧
検出回路９，時間計測回路１０，報知回路１２，電源ス
イッチ回路１３へ与える。電圧検出回路９のコンパレー
タ２２は、電源電圧ｖを整流・平滑して得られた電圧と
基準電圧とを比較し、前記電源電圧ｖが決められた値か
どうかを判定する。この場合、電源電圧ｖはＡＣ１００
ボルトであるから、前記コンパレータ２２はローレベル
の検出信号Ａを開閉制御回路１１へ出力する。またこの
とき報知回路１２の発光ダイオードＤ７は点灯動作し、
決められた電圧値以外の電源電圧が入力端子３より入力
されたことが知らされる。Next, when the power supply voltage v of AC 100 V is applied to the input terminal 3, the internal power supply circuit 8 similarly generates a constant DC voltage V cc from this power supply voltage v, and the voltage detection circuit 9 The measurement circuit 10, the notification circuit 12, and the power switch circuit 13 are supplied. The comparator 22 of the voltage detection circuit 9 compares the voltage obtained by rectifying and smoothing the power supply voltage v with the reference voltage to determine whether the power supply voltage v is a predetermined value. In this case, the power supply voltage v is AC100.
Since it is a volt, the comparator 22 outputs a low level detection signal A to the switching control circuit 11. At this time, the light emitting diode D7 of the notification circuit 12 is turned on,
It is notified that a power supply voltage other than the determined voltage value is input from the input terminal 3.
【００２５】前記時間計測回路１０は、前記電圧検出回
路９の検出動作に必要な検出時間が経過するまでの間は
ローレベルの計測出力Ｂを、経過後はハイレベルの計測
出力Ｂを、それぞれ開閉制御回路１１へ出力するが、前
記電圧検出回路９からの検出信号Ａがローレベルである
ときは、計測出力Ｂがハイレベルになっても、開閉制御
回路１１が出力する制御信号Ｃはハイレベルとなる。こ
の状態のとき、電源スイッチ回路１３のナンド回路２３
の出力はローレベルであり、電源スイッチＳＷがＯＮ状
態であっても、ナンド回路２４の出力はハイレベルとな
り、開閉装置６は電源回路５を開路する。このため入力
端子３に入力された電源電圧ｖは出力端子４より電気機
器駆動回路２０へ供給されない。このようにＡＣ１００
ボルトの電源電圧ｖが入力されると、電圧検出回路９の
検出動作に必要な検出時間が経過するまでの間は時間計
測回路１０の計測出力Ｂにより、また検出時間の経過後
は電圧検出回路９の検出信号Ａにより、開閉装置６が開
状態に設定されるような制御信号Ｃが生成されることに
なる。The time measuring circuit 10 outputs a low-level measurement output B until the detection time required for the detection operation of the voltage detection circuit 9 elapses, and a high-level measurement output B after the time elapses. The output signal is output to the switching control circuit 11, but when the detection signal A from the voltage detection circuit 9 is at a low level, the control signal C output from the switching control circuit 11 is at a high level even if the measurement output B is at a high level. It becomes a level. In this state, the NAND circuit 23 of the power switch circuit 13
Is at a low level, and the output of the NAND circuit 24 is at a high level even when the power switch SW is in the ON state, and the switchgear 6 opens the power circuit 5. Therefore, the power supply voltage v input to the input terminal 3 is not supplied to the electric device drive circuit 20 from the output terminal 4. Thus AC100
When the power supply voltage v of volt is input, the measurement output B of the time measuring circuit 10 continues until the detection time required for the detection operation of the voltage detection circuit 9 elapses, and after the detection time elapses, the voltage detection circuit The control signal C for setting the switchgear 6 to the open state is generated by the detection signal A of 9.
【００２６】[0026]
【発明の効果】この発明は上記の如く、電源より入力し
た電源電圧が決められた値かどうかを検出する電圧検出
部と、前記電圧検出部の検出動作に必要な検出時間の経
過を計測する時間計測部とを設け、前記時間計測部が前
記検出時間の経過を計測するまでの間は開閉制御部が前
記開閉手段を開状態に設定し、前記検出時間の経過を計
測したときは開閉制御部は前記電圧検出部の検出結果に
応じて前記開閉手段の開閉を制御するようにしたから、
誤って決められた電圧値以外の電源に電気機器を電気接
続しても、短時間といえどもその電源電圧が電気機器に
印加されることがなく、電気機器が損傷されるおそれは
ない。As described above, the present invention measures the voltage detection unit for detecting whether the power supply voltage input from the power supply has a predetermined value and the passage of the detection time necessary for the detection operation of the voltage detection unit. A time measuring unit is provided, and the opening / closing control unit sets the opening / closing means in the open state until the time measuring unit measures the passage of the detection time, and the opening / closing control is performed when the passage of the detection time is measured. Since the section controls the opening and closing of the opening and closing means according to the detection result of the voltage detecting section,
Even if the electric device is electrically connected to a power supply having a voltage value other than the erroneously determined voltage value, the power supply voltage is not applied to the electric device even for a short time, and the electric device is not likely to be damaged.
【００２７】また請求項２の発明では、電圧検出部の検
出結果を報知する報知部を制御手段に設けたから、誤っ
て決められた電圧値以外の電源に電気機器を電気接続し
ても、前記報知部によりその誤りを報知できるという効
果がある。According to the second aspect of the present invention, since the notifying section for notifying the detection result of the voltage detecting section is provided in the control means, even if the electric device is electrically connected to the power source other than the erroneously determined voltage value, There is an effect that the error can be notified by the notification unit.
【図１】この発明の一実施例である電源入力制御装置の
全体構成を示すブロック図である。FIG. 1 is a block diagram showing an overall configuration of a power supply input control device that is an embodiment of the present invention.
【図２】制御回路の具体例を示す電気回路図である。FIG. 2 is an electric circuit diagram showing a specific example of a control circuit.
１ 電源 ２ 電気機器 ５ 電源回路 ６ 開閉手段 ７ 制御回路 ９ 電圧検出回路 １０ 時間計測回路 １１ 開閉制御回路 １２ 報知回路 DESCRIPTION OF SYMBOLS 1 power supply 2 electric equipment 5 power supply circuit 6 switching means 7 control circuit 9 voltage detection circuit 10 time measurement circuit 11 switching control circuit 12 notification circuit
Claims (2)
取り込むための電源回路と、 前記電源回路を開閉する開閉手段と、 前記開閉手段の開閉動作を制御する制御手段とから成
り、 前記制御手段は、 前記電源電圧が決められた値かどうかを検出する電圧検
出部と、 前記電圧検出部の検出動作に必要な検出時間の経過を計
測する時間計測部と、 前記時間計測部が前記検出時間の経過を計測するまでの
間は前記開閉手段を開状態に設定し、前記検出時間の経
過を計測したとき前記電圧検出部の検出結果に応じて前
記開閉手段の開閉状態を設定する開閉制御部とを備えて
成る電源入力制御装置。1. A power supply circuit for taking in a power supply voltage input from a power supply into an electric device, an opening / closing means for opening / closing the power supply circuit, and a control means for controlling the opening / closing operation of the opening / closing means. Is a voltage detection unit that detects whether the power supply voltage is a predetermined value, a time measurement unit that measures the elapsed detection time required for the detection operation of the voltage detection unit, and the time measurement unit is the detection time. The opening / closing control unit sets the opening / closing unit in the open state until the progress of is detected, and sets the opening / closing state of the opening / closing unit according to the detection result of the voltage detection unit when the passage of the detection time is measured. A power input control device comprising:
取り込むための電源回路と、 前記電源回路を開閉する開閉手段と、 前記開閉手段の開閉動作を制御する制御手段とから成
り、 前記制御手段は、 前記電源電圧が決められた値かどうかを検出する電圧検
出部と、 前記電圧検出部の検出結果を報知する報知部と、 前記電圧検出部の検出動作に必要な検出時間の経過を計
測する時間計測部と、 前記時間計測部が前記検出時間の経過を計測するまでの
間は前記開閉手段を開状態に設定し、前記検出時間の経
過を計測したとき前記電圧検出部の検出結果に応じて前
記開閉手段の開閉状態を設定する開閉制御部とを備えて
成る電源入力制御装置。2. A power supply circuit for taking in a power supply voltage input from a power supply into an electric device, an opening / closing means for opening / closing the power supply circuit, and a control means for controlling the opening / closing operation of the opening / closing means. Is a voltage detection unit that detects whether the power supply voltage is a predetermined value, a notification unit that notifies the detection result of the voltage detection unit, and measures the passage of detection time necessary for the detection operation of the voltage detection unit. And the time measuring unit, until the time measuring unit measures the passage of the detection time, the opening and closing means is set to the open state, and when the passage of the detection time is measured, the detection result of the voltage detecting unit is set. An opening / closing control unit that sets the opening / closing state of the opening / closing means according to the power supply input control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6225885A JPH0865888A (en) | 1994-08-25 | 1994-08-25 | Power-supply input controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6225885A JPH0865888A (en) | 1994-08-25 | 1994-08-25 | Power-supply input controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0865888A true JPH0865888A (en) | 1996-03-08 |
Family
ID=16836397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6225885A Pending JPH0865888A (en) | 1994-08-25 | 1994-08-25 | Power-supply input controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0865888A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3336049A1 (en) * | 1982-10-05 | 1984-04-05 | Japan Vilene Co.,Ltd. | COUNTERFLOW HEAT EXCHANGER |
| WO2003073579A1 (en) * | 2002-02-28 | 2003-09-04 | Fujitsu Limited | Apparatus for preventing erroneous input of power supply |
| JP2007124834A (en) * | 2005-10-28 | 2007-05-17 | Kenwood Corp | Device for monitoring external power supply |
-
1994
- 1994-08-25 JP JP6225885A patent/JPH0865888A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3336049A1 (en) * | 1982-10-05 | 1984-04-05 | Japan Vilene Co.,Ltd. | COUNTERFLOW HEAT EXCHANGER |
| WO2003073579A1 (en) * | 2002-02-28 | 2003-09-04 | Fujitsu Limited | Apparatus for preventing erroneous input of power supply |
| JP2007124834A (en) * | 2005-10-28 | 2007-05-17 | Kenwood Corp | Device for monitoring external power supply |
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