JP3066870B2 - Flame detection alarm with battery voltage detection function - Google Patents
Flame detection alarm with battery voltage detection functionInfo
- Publication number
- JP3066870B2 JP3066870B2 JP2149451A JP14945190A JP3066870B2 JP 3066870 B2 JP3066870 B2 JP 3066870B2 JP 2149451 A JP2149451 A JP 2149451A JP 14945190 A JP14945190 A JP 14945190A JP 3066870 B2 JP3066870 B2 JP 3066870B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- battery
- low
- detection
- voltage 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.)
- Expired - Fee Related
Links
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- Emergency Alarm Devices (AREA)
- Fire-Detection Mechanisms (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明はマッチ、ライター、火災等の炎に含まれる
紫外線を検出して警報音を発するようにした炎検出警報
器に関するものであり、特に、電源として電池を使用し
た場合に同電池の電圧（消耗度合い）を検出して、同電
圧が所定値まで低下すると警報器が鳴るようにしたもの
であり、例えば火災警報器に使用されるものである。Description: TECHNICAL FIELD The present invention relates to a flame detector and an alarm which emits an alarm sound by detecting ultraviolet rays contained in flames such as matches, lighters and fires. When a battery is used as a power source, a voltage (a degree of consumption) of the battery is detected, and when the voltage drops to a predetermined value, an alarm sounds, such as a fire alarm. It is.
（従来の技術） 火災警報器には従来より各種のものがある。その一つ
として紫外線センサ（UV管）により炎に含まれる紫外線
が検知されると警報が発生するようにしたものがある。
このUV管を利用した従来の火災警報器は電源に交流電源
が使用されているため、商用電源の無い場所では使用で
きず、また大型で、しかも重いため所望とする箇所に取
付けにくく、取付け箇所が制約されるよいう問題があっ
た。(Prior Art) There have been various types of fire alarms. As one of them, there is one in which an alarm is generated when an ultraviolet ray contained in a flame is detected by an ultraviolet ray sensor (UV tube).
The conventional fire alarm using this UV tube cannot be used in places where there is no commercial power supply because AC power is used as the power supply, and it is large and heavy, so it is difficult to install it in the desired place. There was a problem that was restricted.
そこで本件出願人は電源に電池を使用するUV管利用の
火災警報器を現在開発中である。しかしUV管の駆動には
DC300〜400V程度の電圧が必要であるため、数Ｖの電池
電圧をそのまま使用したのでUV管が駆動しない。電池電
圧でUV管を駆動するためには、電池電圧をDC−DCコンバ
ータ回路によりUV管の駆動電圧まで昇圧しなければなら
ない。この場合、DC−DCコンバータ回路の消費電流の大
きさがほぼそのまま電池の寿命になる。しかも、一般に
DC−DCコンバータ回路は消費電流がかなり大きい（85μ
Ａ、30mA）ので、電池の消耗が激しい。Therefore, the present applicant is currently developing a fire alarm using a UV tube using a battery as a power supply. But for driving UV tubes
Since a voltage of about 300 to 400 V DC is required, the UV tube does not operate because a battery voltage of several volts is used as it is. In order to drive the UV tube with the battery voltage, the battery voltage must be boosted to the drive voltage of the UV tube by a DC-DC converter circuit. In this case, the magnitude of the current consumption of the DC-DC converter circuit is almost equal to the life of the battery. And in general
The DC-DC converter circuit consumes a considerable amount of current (85μ
A, 30mA).
電池を電源とする火災警報器では電池が消耗して電圧
が所定値より低下すると、誤動作したり、火災が発生し
ても動作しなかったりすることがある。これでは火災警
報器としての機能が充分に発揮されず、信頼性に欠け
る。When the battery is consumed and the voltage drops below a predetermined value, a fire alarm using a battery as a power supply may malfunction or may not operate even if a fire occurs. In this case, the function as a fire alarm is not sufficiently exhibited, and the reliability is lacking.
そのため火災警報器の保守管理上、電池の消耗を事前
に検知する必要がある。そのためには既存の低電圧検出
ICを使用して電池の消耗を検知することが考えられる。Therefore, it is necessary to detect the exhaustion of the battery in advance in the maintenance management of the fire alarm. To do this, use the existing low voltage detection
It is conceivable to use an IC to detect battery consumption.
（発明が解決しようとする課題） しかし、既存の低電圧検出ICは検出電圧値の設定にあ
まり自由度がないため、同低電圧検出ICをそのまま使用
したのでは電池電圧を検出することが難しい。そこで本
件発明者が鋭意検討した結果、第２図のように抵抗R1、
R2により検知電圧（電池電圧）を分圧して低電圧検出IC
に入力すれば既存の低電圧検出ICを使用して電池電圧を
検出することができることを見出した。(Problems to be Solved by the Invention) However, since the existing low-voltage detection IC does not have much flexibility in setting the detection voltage value, it is difficult to detect the battery voltage by using the low-voltage detection IC as it is. . Therefore a result of the present inventors have studied intensively, resistor R 1 as of FIG. 2,
Pressure by R 2 sense voltage (battery voltage) divided by the low-voltage detection IC
, The battery voltage can be detected using an existing low-voltage detection IC.
しかし、この場合、抵抗R1、R2の抵抗値が低電圧検出
ICの入力抵抗よりも小さいため、同抵抗R1、R2が低電圧
検出ICの入力抵抗に影響を及ぼして誤動作の原因とな
る、という問題があった。However, in this case, the resistance values of resistors R 1 and R 2
Since they are smaller than the input resistance of the IC, there is a problem that the resistors R 1 and R 2 affect the input resistance of the low-voltage detection IC and cause a malfunction.
また、火災報知器において確実な動作を保証するため
には、9Vの電池を使用した場合に5.4Vよりも高い電圧値
を使用可能な限界電圧（終止電圧）とし、この終止電圧
を検出して何らかの警報を発する必要がある。しかし、
既存の低電圧検出ICでは回路設計の都合上、5.2V程度ま
では検出可能であるがそれ以上の電圧は検出できないた
め、所望とする終止電圧を検出することが不可能であっ
た。Also, in order to guarantee reliable operation of the fire alarm, when a 9V battery is used, a voltage value higher than 5.4V is set as a usable limit voltage (end voltage), and this end voltage is detected. Some kind of alarm needs to be issued. But,
The existing low-voltage detection IC can detect up to about 5.2 V, but cannot detect a voltage higher than that, for the sake of circuit design. Therefore, it was impossible to detect a desired end voltage.
（発明の目的） 本発明の目的は前記の諸問題を解決し、既存の低電圧
検出ICを用いて、その最大検知可能電圧（例えば5.2V）
よりも高い終止電圧を検出できるようにした電池電圧検
出機能付き炎検出警報器を提供することにある。(Object of the Invention) An object of the present invention is to solve the above-mentioned problems and to use an existing low-voltage detection IC to detect the maximum detectable voltage (for example, 5.2 V).
It is an object of the present invention to provide a flame detection alarm with a battery voltage detection function which can detect a higher end voltage.
（課題を解決するための手段） 本発明のうち請求項第１の電池電圧検出機能付き炎検
出警報器は、第１図のように、電源に電池Ｅが使用さ
れ、同電池Ｅの使用可能電圧を検出する低電圧検出ICが
設けられ、炎に含まれる紫外線が紫外線センサにより検
出されると警報を発するようにした炎検出警報器におい
て、前記低電圧検出ICの入力側に電池電圧を分圧して同
低電圧検出ICの入力電圧を検出可能電圧まで降圧する抵
抗R1、R2を設け、抵抗R1、R2と低電圧検出ICの間に、抵
抗R1、R2が低電圧検出ICの入力抵抗に影響することを防
止するために、低電圧検出ICの入力インピーダンスとマ
ッチングがとれた半導体素子２を設けてなるものであ
る。(Means for Solving the Problems) According to the first aspect of the present invention, a battery E with a battery voltage detection function uses a battery E as a power source as shown in FIG. In a flame detection alarm device provided with a low voltage detection IC for detecting a voltage, and issuing an alarm when ultraviolet light contained in the flame is detected by an ultraviolet sensor, a battery voltage is distributed to an input side of the low voltage detection IC. pressure is provided a resistor R 1, R 2 steps down the input voltage of the low-voltage detection IC to detectable voltage, resistance R 1, between R 2 and the low-voltage detection IC, resistors R 1, R 2 are low voltage In order to prevent the influence on the input resistance of the detection IC, a semiconductor element 2 matched with the input impedance of the low-voltage detection IC is provided.
本発明のうち請求項第２の電池電圧検出機能付き炎検
出警報器は、第１図のように、半導体素子２が電解効果
トランジスタFETであり、同電解トランジスタFETのゲー
トと接地間に分圧用の抵抗R1、R2が配され、同電解効果
トランジスタFETのソースと接地間に急激な電圧低下を
防止するためのコンデンサＣが配されてなるものであ
る。According to a second aspect of the present invention, there is provided a flame detection alarm with a battery voltage detection function, wherein the semiconductor element 2 is a field effect transistor FET as shown in FIG. arranged resistors R 1, R 2 is those formed by the capacitor C for preventing a rapid voltage drop between ground and the source of the field effect transistor FET is arranged.
（作用） 本発明の電池電圧検出機能付き炎検出警報器では電池
Ｅの終止電圧を検出する低電圧検出IC1の入力段に、電
解効果トランジスタFET等の半導体素子２を設けたの
で、同半導体素子２と低電圧検出IC1の入力インピーダ
ンスをマッチングさせておけば、半導体素子２の入力段
に分圧用の抵抗R1、R2を入れても低電圧検出IC1の入力
抵抗に影響がなく、誤動作の虞れがない。(Operation) In the flame detector / alarm with the battery voltage detection function of the present invention, the semiconductor element 2 such as a field effect transistor FET is provided at the input stage of the low voltage detection IC 1 for detecting the end voltage of the battery E. if by matching the input impedance of the 2 low voltage detection IC1, resistor R 1 of dividing the input stage of the semiconductor element 2, even taking R 2 does not affect the input resistance of the low-voltage detection IC1, malfunctions There is no fear.
また、分圧用の抵抗R1、R2の抵抗値を変えることによ
り半導体素子２を介して低電圧検出IC1に入力される電
圧を、同低電圧検出IC1の検出可能電圧まで充分に降圧
することができるため、例えば、検出可能な最大電圧が
約5.2Vの電圧検出IC1を用いて、9Vの電池の5.4Vの終止
電圧を検出することもできる。Further, by changing the resistance values of the voltage dividing resistors R 1 and R 2 , the voltage input to the low voltage detection IC 1 via the semiconductor element 2 is sufficiently reduced to a detectable voltage of the low voltage detection IC 1. Therefore, for example, the cut-off voltage of a 9 V battery of 5.4 V can be detected using a voltage detection IC 1 having a maximum detectable voltage of about 5.2 V.
（実施例） 本発明の電池電圧検出機能付き炎検出警報器の一実施
例を示す第１図において、VDは電池の電源電圧、R1、R2
は分圧用の抵抗、FETは電解効果トランジスタ（半導体
素子）、Ｃ電圧Vsの急激な電圧低下を防止するための電
解コンデンサ、１は低電圧検出IC、VOは低電圧検出ICの
出力電圧である。In the first diagram showing an embodiment of a battery voltage detection function flame detector alarm (Example) The present invention, V D is supply voltage of the battery, R 1, R 2
Is a resistor for voltage division, FET is a field effect transistor (semiconductor element), electrolytic capacitor for preventing a sharp drop of C voltage Vs, 1 is a low voltage detection IC, and VO is an output voltage of the low voltage detection IC. is there.
前記抵抗R1は電源と電解効果トランジスタFETのゲー
トとの間に、前記抵抗R2は同電解効果トランジスタFET
のゲートと接地との間に設けられて、電源電圧VDを分圧
して同電解効果トランジスタFETのゲートに入力するも
のである。Between the gate of the resistor R 1 is power supply and field effect transistor FET, the resistance R 2 is the field effect transistor FET
Provided between the gate and ground of, in which by applying a power supply voltage V D min is input to the gate of the field effect transistor FET.
本発明における前記半導体素子２はできれば高インピ
ーダンスのものが望ましく、そのようにすれば消費電流
が少なくなり、電池電圧の消耗が少なく、電池の寿命が
延びる。Preferably, the semiconductor element 2 in the present invention has a high impedance if possible, so that current consumption is reduced, battery voltage consumption is reduced, and battery life is extended.
第１図、第２図における３は電圧検出信号発振回路で
あり、これは低電圧検出IC1の出力電圧VOが入力される
と作動して、適宜間隔のパルス信号と断続的に発振する
ものである。Reference numeral 3 in FIGS. 1 and 2 denotes a voltage detection signal oscillation circuit, which operates when the output voltage V O of the low voltage detection IC 1 is input, and oscillates intermittently with pulse signals at appropriate intervals. It is.
第１図、第２図における４はブザー、ベル等の報知器
であり、前記電圧検出信号発振回路３から発振されるパ
ルスにより断続音を発振するものである。In FIG. 1 and FIG. 2, reference numeral 4 denotes an alarm such as a buzzer or a bell, which emits an intermittent sound by a pulse oscillated from the voltage detection signal oscillation circuit 3.
（発明の効果） 本発明の電池電圧検出機能付き炎検出警報器は次のよ
うな効果がある。(Effect of the Invention) The flame detection alarm with a battery voltage detection function of the present invention has the following effects.
．分圧用の抵抗R1、R2を変えて低電圧検出ICへの入力
電圧を、同低電圧検出ICの検出可能電圧値に合わせるこ
とができるので、既存の低電圧検出ICを用いてその検出
可能電圧よりも高い終止電圧を確実に検出することがで
きる。従って、電池が使用不可能になる前に交換して、
炎検出警報器の動作を保証することができる。. By changing the resistors R 1 and R 2 for voltage division, the input voltage to the low-voltage detection IC can be matched to the detectable voltage value of the low-voltage detection IC. The end voltage higher than the possible voltage can be reliably detected. Therefore, replace the battery before it becomes unusable,
The operation of the flame detection alarm can be guaranteed.
．低電圧検出ICの検出可能電圧の自由度が高くなるた
め、炎検出警報器の各種仕様に対応することができる。. Since the degree of freedom of the detectable voltage of the low voltage detection IC is increased, it can correspond to various specifications of the flame detection alarm.
．低電圧検出ICの入力抵抗が分圧用の抵抗R1、R2の影
響を受けないので、低電圧検出ICが誤動作する虞れがな
い。. Since the input resistance of the low-voltage detection IC is not affected by the voltage dividing resistors R 1 and R 2 , there is no possibility that the low-voltage detection IC malfunctions.
．半導体素子２として高インピーダンスのものを使用
すれば、分圧用の抵抗R1、R2を大きい定数にすることが
でき、ひいては炎検出警報器の消費電流が少なくなる。. If a semiconductor element 2 having a high impedance is used, the resistors R 1 and R 2 for voltage division can be made large constants, and the current consumption of the flame detector / alarm can be reduced.
第１図は本発明の電池電圧検出機能付き炎検出警報器の
一実施例を示すブロック回路図、第２図は本件発明者が
本件発明の開発途上で考えた低電圧検出回路を示すブロ
ック回路図である。 １は低電圧検出IC ２は半導体素子 R1、R2は抵抗 Ｃはコンデンサ VDは電源電圧 Voは出力電圧FIG. 1 is a block circuit diagram showing an embodiment of a flame detection alarm with a battery voltage detection function of the present invention, and FIG. 2 is a block circuit showing a low voltage detection circuit considered by the present inventor during the development of the present invention. FIG. 1 low-voltage detection IC 2 is semiconductor device R 1, R 2 the resistance C is the capacitor V D is supply voltage V o is the output voltage
Claims (2)
可能電圧を検出する低電圧検出ICが設けられ、炎に含ま
れる紫外線が紫外線センサにより検出されると警報を発
するようにした炎検出警報器において、前記低電圧検出
ICの入力側に電池電圧を分圧して同低電圧検出ICの入力
電圧を検出可能電圧まで降圧する抵抗R1、R2を設け、抵
抗R1、R2と低電圧検出ICの間に、抵抗R1、R2が低電圧検
出ICの入力抵抗に影響することを防止するために、低電
圧検出ICの入力インピーダンスとマッチングがとれた半
導体素子２を設けてなることを特徴とする電池電圧検出
機能付き炎検出警報器。A battery E is used as a power supply, and a low voltage detection IC for detecting a usable voltage of the battery E is provided, and an alarm is issued when ultraviolet light contained in the flame is detected by an ultraviolet sensor. In the flame detection alarm, the low voltage detection
The resistors R 1 and R 2 are provided on the input side of the IC to divide the battery voltage and reduce the input voltage of the low-voltage detection IC to a detectable voltage.Between the resistors R 1 and R 2 and the low-voltage detection IC, In order to prevent the resistances R 1 and R 2 from affecting the input resistance of the low-voltage detection IC, a battery element comprising a semiconductor element 2 matched with the input impedance of the low-voltage detection IC is provided. Flame detection alarm with detection function.
であり、同電解トランジスタFETのゲートと接地間に分
圧用の抵抗R1、R2が配され、同電解効果トランジスタFE
Tのソースと接地間に急激な電圧低下を防止するための
コンデンサＣが配されてなることを特徴とする請求項第
１の電池電圧検出機能付き炎検出警報器。2. The semiconductor element 2 is a field effect transistor FET.
The resistors R 1 and R 2 for voltage division are arranged between the gate of the FET and the ground, and the FET FE
3. A flame detector alarm with a battery voltage detecting function according to claim 1, wherein a capacitor C for preventing a sudden voltage drop is arranged between the source of T and the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2149451A JP3066870B2 (en) | 1990-06-07 | 1990-06-07 | Flame detection alarm with battery voltage detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2149451A JP3066870B2 (en) | 1990-06-07 | 1990-06-07 | Flame detection alarm with battery voltage detection function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0442400A JPH0442400A (en) | 1992-02-12 |
| JP3066870B2 true JP3066870B2 (en) | 2000-07-17 |
Family
ID=15475409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2149451A Expired - Fee Related JP3066870B2 (en) | 1990-06-07 | 1990-06-07 | Flame detection alarm with battery voltage detection function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3066870B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643468A (en) * | 2017-09-29 | 2018-01-30 | 惠州华阳通用电子有限公司 | A kind of alarm validation checking circuit and method |
-
1990
- 1990-06-07 JP JP2149451A patent/JP3066870B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0442400A (en) | 1992-02-12 |
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