JPS593277A - Circuit for controlling emergency light - Google Patents

Circuit for controlling emergency light

Info

Publication number
JPS593277A
JPS593277A JP57113098A JP11309882A JPS593277A JP S593277 A JPS593277 A JP S593277A JP 57113098 A JP57113098 A JP 57113098A JP 11309882 A JP11309882 A JP 11309882A JP S593277 A JPS593277 A JP S593277A
Authority
JP
Japan
Prior art keywords
voltage
circuit
comparator
led
turned
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
Application number
JP57113098A
Other languages
Japanese (ja)
Inventor
Takuya Komoda
卓哉 菰田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP57113098A priority Critical patent/JPS593277A/en
Publication of JPS593277A publication Critical patent/JPS593277A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Tests Of Electric Status Of Batteries (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

PURPOSE:To enable abnormal warning even if the voltage of a battery drops to such a state that the driving of a control circuit becomes impossible, by forming an abnormality detecting circuit from a constant-voltage circuit and a comparator. CONSTITUTION:When the voltage of a battery drops to lower the input voltage VIN and a constant-voltage circuit 2 becomes inoperative, the operation of a comparator 3 is stopped and the output thereof is turned OFF. By this mechanism, a transistor Q1 is turned OFF and Q2 is turned ON by self-biasing through a resistor R3 while a current is supplied to LED through R4 and LED is held under a lighting state. LED is succeedingly lighted by a voltage self-biasing Q2 and voltage capable of lighting LED even if a voltage VIN reaches the voltage low enough incapable of driving the constant-voltage circuit 2 and the comparator 3, and thereby abnormality is informed.

Description

【発明の詳細な説明】 (1)本発明の目的 本発明は非猟灯の制御回路に関するものであってその目
的とするところは、バッテリー(1) 電圧か降下し、制御回路を駆動するに十分な電圧を供給
できなくなったときにも、異常警告信号を出力しうる非
常灯制御回路を提供することである。
DETAILED DESCRIPTION OF THE INVENTION (1) Purpose of the present invention The present invention relates to a control circuit for a non-hunting light, and its purpose is to reduce the voltage of a battery (1) and drive the control circuit. To provide an emergency light control circuit capable of outputting an abnormality warning signal even when sufficient voltage cannot be supplied.

(2)従来例の欠点 従来より非常灯には、回路状態の異常を判別するための
モニター回路が用いられている。このモニター回路はバ
ッテリー電圧が異常に下ったとき、発光ダイオードL 
E ])が点灯するようになっているものが一般的なも
のである。特に、バッテリー電圧が異常に下っているか
どうかの点検は点検の際、点検スイッチにより常用の交
流電飾をカットして、非常用のバッテリー駆動とし、発
光ダイオードLEDが点灯するかどうかをチェックする
ことにより、バッテリーに異常かないかを調べるための
機能として、日常保守点検に必要欠くべからざるもので
ある。
(2) Disadvantages of the conventional example Conventionally, emergency lights have been equipped with a monitor circuit for determining abnormalities in the circuit state. This monitor circuit detects when the battery voltage drops abnormally.
E ]) is generally lit. In particular, to check whether the battery voltage is abnormally low, use the inspection switch to cut off the regular AC illumination, switch to emergency battery power, and check whether the light emitting diode LED lights up. This function is indispensable for daily maintenance and inspection as a function to check whether there are any abnormalities in the battery.

ところが、点検期間の間に回路や、バッテリーに何らか
の変化があり、バッテリー電圧(2) が、モニター回路を駆動するに十分な電、圧を供給でき
なくなる場合があった。そして従来ではバッテリー市川
が5v以下になると不都合を生じていた。このとき点検
スイッチをオンして級へても、発光ダイオードL E 
l)が点灯しないため、バッチIJ−1その他が正常と
判断され、非常時に重大な障害をおよぼす恐れがあった
。本発明は、かかる欠点にかんがみてなされたものであ
る。
However, during the inspection period, there were some changes in the circuit or battery, and the battery voltage (2) could no longer supply sufficient voltage and voltage to drive the monitor circuit. In the past, problems occurred when the battery Ichikawa voltage became less than 5V. At this time, even if the inspection switch is turned on and the light emitting diode L E
1) did not light up, batch IJ-1 and others were judged to be normal, which could cause serious trouble in an emergency. The present invention has been made in view of these drawbacks.

(8)本発明の構成 第1図に本発明の構成を示す。(8) Structure of the present invention FIG. 1 shows the configuration of the present invention.

入力VINにバッテリーが接続される。この人力VIN
を定電圧回路(2)で、一定電圧化し、コンパレータ(
8)の電源電圧Vccとして利用すると共に、また抵抗
に1、k2で分圧した電圧をコンパレータ(8)の比較
基準電圧VOとして用いる、またこの人力VINはコン
パレータ(3)の入力端子に接続されている。
A battery is connected to the input VIN. This human power VIN
is made into a constant voltage by the constant voltage circuit (2), and the comparator (
8) as the power supply voltage Vcc, and the voltage divided by 1 and k2 across the resistors is used as the comparison reference voltage VO of the comparator (8).This human power VIN is connected to the input terminal of the comparator (3). ing.

一方、コンパレータ(8)の出力にトランジスタQlの
ベースを接続し、トランジスタQlのコレクタは、トラ
ンジスタQ2のベース及び抵抗に8を介して入力VIN
に接続する。
On the other hand, the base of the transistor Ql is connected to the output of the comparator (8), and the collector of the transistor Ql is connected to the input VIN via the base of the transistor Q2 and the resistor (8).
Connect to.

一方、l−ランジスタQ2のコレクタは発光ダイオード
L E Dのカソードに接続され、LEDのアノードは
抵抗に4を介してVINに接続されている。トランジス
タQl、Q2のエミッタは、接地される。
On the other hand, the collector of the l-transistor Q2 is connected to the cathode of the light emitting diode LED, and the anode of the LED is connected to VIN via the resistor 4. The emitters of transistors Ql and Q2 are grounded.

(4)本発明の動作状態 入力VINが正常に入力されているとき(バッテリーが
正常のとき)は、定電圧回路(2)により、コンパレー
タ(8)が正常動作し、コンパレータ(8)の出力がH
iとなりトランジスタ(之1がオンし、トランジスタQ
2のベース・エミッタ間を短絡することにより、トラン
ジスタQ2がオフし、発光ダイオードLEDは点灯しな
い。この際抵抗に8を、値の大きいものにすれはトラン
ジスタQ1がオンすることによる電流ロスはほとんど間
融にならない微小なものにできる。
(4) When the operating status input VIN of the present invention is input normally (when the battery is normal), the comparator (8) operates normally by the constant voltage circuit (2), and the output of the comparator (8) is H
becomes i, transistor (No. 1 turns on, and transistor Q
By shorting the base and emitter of Q2, the transistor Q2 is turned off and the light emitting diode LED does not light up. At this time, by using a resistor of 8 and a large value, the current loss caused by turning on the transistor Q1 can be made so small that it hardly causes melting.

一方、入力VINが下降したとき、定電圧回路(2)が
正常動作しているあいだは、コンパレータ出力がハイか
らロウになり、上記と逆の動作がおこり発光ダイオード
L E Dは点灯して、異常警報を出力する。そして入
力VINが、さらに下降し、定電圧回路(2)が動作し
なくなると、コンパレータ(8)の動作が停止し、コン
パレータ(3)は、入力VINにかかわらず出力に信号
が供給されなくなる。すると、トランジスタq1がオフ
し、トランジスタQ2は抵抗に8を通じて自己バイアス
され、したがってトランジスタQ2はオンし、発光ダイ
オードLEDに抵抗R4を介して電流が供給され、発光
ダイオードLEDか点灯しつづける。発光ダイオードL
EDは、入力VINが定電圧回路(2)や、コンパレー
タ(3)を駆動できない程度の低い電圧に達してもトラ
ンジスタQ2を自己バイアスする電圧および発光ダイオ
ードLEDを点灯できる電圧(およそ1.6■)があれ
は、発光ダイオードLEDを継続点口させることができ
る。
On the other hand, when the input VIN falls, while the constant voltage circuit (2) is operating normally, the comparator output changes from high to low, the opposite operation to the above occurs, and the light emitting diode LED lights up. Outputs an abnormality alarm. When the input VIN further decreases and the constant voltage circuit (2) stops operating, the comparator (8) stops operating, and no signal is supplied to the output of the comparator (3) regardless of the input VIN. Then, the transistor q1 is turned off, and the transistor Q2 is self-biased through the resistor 8, so the transistor Q2 is turned on, and current is supplied to the light emitting diode LED through the resistor R4, so that the light emitting diode LED continues to light up. light emitting diode L
ED is a voltage that self-biases the transistor Q2 even if the input VIN reaches a voltage too low to drive the constant voltage circuit (2) or the comparator (3), and a voltage that can turn on the light emitting diode LED (approximately 1.6 ) can be used to continuously turn on the light emitting diode LED.

(5)本発明の効果 従来、5■以下では、発光ダイオードLEDが点灯でき
なかったものが、2■まで入力VINが下降しても点灯
できるようになった。発光ダイオードLEDの点灯に要
する電流は約4 m Aであるので、入力VINに接続
されるバッテリーに100mAhの容量があれば25時
間の発光ダイオードLEDの点灯時間の妙技が期待でき
ることとなり、非常灯の異常検出発見に寄与するその効
果は大きい。
(5) Effects of the present invention Conventionally, the light-emitting diode LED could not be turned on when the input VIN was below 5■, but now it can be turned on even if the input VIN falls to 2■. The current required to light a light emitting diode LED is approximately 4 mA, so if the battery connected to the input VIN has a capacity of 100 mAh, you can expect the light emitting diode LED to light for 25 hours, which can be used as an emergency light. Its effectiveness in contributing to anomaly detection and discovery is significant.

【図面の簡単な説明】[Brief explanation of the drawing]

図面はこの発明の一実施例を示す回路図である特許出願
人 松下電工株式会社 代理人弁理士 竹 元 敏 丸 (ほか2名) 手  続  補  正  書(自発) 昭和 57年 12月/乙1] 昭和57年 特許願第11309引 2、発明の名称 非常灯制御回路 3、補正をする者 事件との関係  特許出願人 住  所     大阪府門真市大字門真1048番地
住  所     大阪府門真市大字門真1048番地
松下電工株式会社特許課内 6、補正の対象 明細書の「発明の詳細な説明」の欄及び図面7、補正の
内容 別紙の通り (1)明細書の第6頁第15行乃至第18行を次のよう
に訂正する。 1−利用すると共にコンパレータ(3)の比較基準電圧
Voとして用いる。また人力VINは抵抗R1、几2・
で分圧した電圧をコンパレータ(3)の入力端子に接続
する。」 (3)明細書の第5貞第17行に「自己」とあるを「自
己」と訂正する。
The drawing is a circuit diagram showing one embodiment of this invention. Patent applicant: Matsushita Electric Works Co., Ltd. Patent attorney: Toshimaru Takemoto (and two others) Procedural amendment (self-motivated) December 1980/Otsu No. 1 ] 1981 Patent Application No. 11309, Part 2, Title of Invention: Emergency Light Control Circuit 3, Relationship with the Amendment Case Patent Applicant Address: 1048 Oaza Kadoma, Kadoma City, Osaka Address: 1048 Oaza Kadoma, Kadoma City, Osaka Prefecture Address Matsushita Electric Works Co., Ltd. Patent Division 6, "Detailed Description of the Invention" column of the specification subject to amendment and Drawing 7, Contents of amendment as attached (1) Page 6, lines 15 to 18 of the specification Correct as follows. 1- is utilized and used as a comparison reference voltage Vo of the comparator (3). In addition, human power VIN is resistor R1, 几2・
Connect the divided voltage to the input terminal of the comparator (3). (3) In the 5th sentence, line 17 of the specification, the word "self" is corrected to "self."

Claims (1)

【特許請求の範囲】[Claims] (1)バッテリー電圧が一定電圧以下に下降したことを
検知する検知回路、該検知回路の前記検知信号を保持す
るラッチ回路及び該ラッチ回路に接続される発光ダイオ
ード等の発光手段から構成し、該検知回路をバッテリー
出力に接続する定電圧回路及びコンパレータより構成し
、バッテリー出力に定電圧回路を接続して得られる定電
圧源にてコンパレータを駆動すると共にコンパレータの
基準電圧を与え、細分、バッテリーの出力をコンパレー
タに比較電圧として入力することを特徴とする非常灯制
御回路。
(1) Consisting of a detection circuit that detects that the battery voltage has fallen below a certain voltage, a latch circuit that holds the detection signal of the detection circuit, and a light emitting means such as a light emitting diode connected to the latch circuit, The detection circuit consists of a constant voltage circuit connected to the battery output and a comparator, and the constant voltage source obtained by connecting the constant voltage circuit to the battery output drives the comparator and provides a reference voltage for the comparator. An emergency light control circuit characterized by inputting an output to a comparator as a comparison voltage.
JP57113098A 1982-06-29 1982-06-29 Circuit for controlling emergency light Pending JPS593277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57113098A JPS593277A (en) 1982-06-29 1982-06-29 Circuit for controlling emergency light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57113098A JPS593277A (en) 1982-06-29 1982-06-29 Circuit for controlling emergency light

Publications (1)

Publication Number Publication Date
JPS593277A true JPS593277A (en) 1984-01-09

Family

ID=14603424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57113098A Pending JPS593277A (en) 1982-06-29 1982-06-29 Circuit for controlling emergency light

Country Status (1)

Country Link
JP (1) JPS593277A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009303317A (en) * 2008-06-11 2009-12-24 Ricoh Co Ltd Reference voltage generating circuit and dc-dc converter with that reference voltage generating circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009303317A (en) * 2008-06-11 2009-12-24 Ricoh Co Ltd Reference voltage generating circuit and dc-dc converter with that reference voltage generating circuit

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