JPS5839397A - Compensation type spot sensor - Google Patents
Compensation type spot sensorInfo
- Publication number
- JPS5839397A JPS5839397A JP13746781A JP13746781A JPS5839397A JP S5839397 A JPS5839397 A JP S5839397A JP 13746781 A JP13746781 A JP 13746781A JP 13746781 A JP13746781 A JP 13746781A JP S5839397 A JPS5839397 A JP S5839397A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- capacitor
- temperature
- point
- resistor
- 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
- Fire-Detection Mechanisms (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明は、補償式スポット型感知器に関するもので、
ダイヤフラムやバイメタルを使用しない半導体式の感知
器としては、従来温度上昇検出に熱応答の異なるサーミ
スタ2個を直列に接続・使用し基準電圧と比較し、定温
検出にはさらにもう1個のサーミスタを使用しており、
同一特性のサーミスタを、2個は直接外気温に感応させ
、他のIllは感知器内の所定の位置へ固定して外気温
との感知を適切に保たねばならない難しさがあった。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a compensated spot type sensor.
Conventional semiconductor sensors that do not use diaphragms or bimetals use two thermistors with different thermal responses connected in series to detect temperature rise and compare with a reference voltage, and another thermistor is used to detect constant temperature. I am using
Two thermistors with the same characteristics must be directly sensitive to the outside temperature, and the other Ill must be fixed at a predetermined position within the sensor to maintain proper sensing of the outside temperature.
さらに加えて、温度上昇検知用の2個のサーミスタの特
性のバラツキも大きく影智してくるため特性精度を高く
する必要があった。この問題点を鑑みてサーミスタを少
なくシ、放電用抵抗とコンデンサによる時定数の調整に
より素子の特性のバラツキを吸収できる補償式スボツ)
W感知器を得ることを目的とする。In addition, the variation in the characteristics of the two thermistors used to detect the temperature rise has a large influence, so it was necessary to increase the accuracy of the characteristics. In view of this problem, we have reduced the number of thermistors, and created a compensation type socket that can absorb variations in the characteristics of the elements by adjusting the time constant using the discharge resistor and capacitor.
The purpose is to obtain a W sensor.
この発明の補償式スポット型感知器の一実施例を図面に
て説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the compensated spot type sensor of the present invention will be described with reference to the drawings.
図において直列に接続されたサーミスタTh。In the figure, thermistors Th are connected in series.
ダイオード、トランジスタ等の感温素子と抵抗町により
電圧を分割する点aに、コンデンサ放電用の可変抵抗V
凰と共にコンデンtC重を直列に接続し、さらに抵抗V
Bと並列にコンデンサの充電を促進し、逆流防止をする
ダイオードDを接続する。A variable resistor V for capacitor discharge is installed at point a where the voltage is divided by a temperature sensing element such as a diode or transistor and a resistor.
A capacitor tC is connected in series with , and a resistor V
Connect diode D in parallel with B to promote charging of the capacitor and prevent backflow.
次4ca点、b点の電圧を比較する電圧検知素子1’U
T lをa点よ抄ゲーtへ、)点よりアノードへ接続す
る。一方a点轄別の電圧検知素子PUT1!Oゲートへ
%接続し、この電圧検知素子PUT2に社抵抗が2個直
列に接続された中間点よりその7ノードヘ接続されて−
る。これら2個の電圧検知素子PU’r1.gをスイッ
チング素子のナイリス$80Rへ接続する。Voltage sensing element 1'U that compares the voltages at point 4ca and point b
Connect T l from point a to gate t, and from point ) to the anode. On the other hand, the voltage detection element PUT1 for each point a! % connected to the O gate, and connected to the 7th node from the middle point where two resistors are connected in series to this voltage sensing element PUT2.
Ru. These two voltage sensing elements PU'r1. Connect g to the switching element Nyris $80R.
a点と1点との電圧を比較して温度上昇率を、a点と0
点を比較して定温を検知する。Compare the voltages at point a and point 1 to determine the rate of temperature rise.
Detect constant temperature by comparing the points.
1#1火災受信機、コンデンt01は漏れ電流の吸収用
、抵抗へはノイズ01収用で共にスイツチン流OWS*
用である。1 #1 fire receiver, capacitor t01 is for absorbing leakage current, noise 01 is for resistor, both switch style OWS *
It is for use.
今、温度が急激に上昇すると、サーミスタT11の抵抗
値がflA激に減少する丸めa点の電圧も急激に減少す
る。一方す点の電圧は、コンデンサC1より抵抗VBと
サーセスタThを通ってゆるや−bhe放電するため忙
ゆるやかに電圧が減少する。温度がゆっくり上昇すると
、a点・’b、ao電圧は共にゆるやかに減少する。し
たがって、コンデンサC2の値と、その抵抗VRを適当
に選び放電の時定WLVr決定すると、温度上昇率によ
り、a、b点間に必要な電位差を生じさせることができ
る。ゆえにa点とb点を比較することによりある温度上
昇率以上になるとサイリスタ8(3Rをスイッチングす
る回路ができる。またa点と固定電圧点の0点を比較す
ることにより、一定温度になったとき、サイリスタ80
Rをスイッチングする回路ができる。上記コンデンサ放
電用可変抵抗VR1i図の様にコンデンサC!と並列に
入れた場合でもよくこの接続の方がコンデンサが完全に
充電されたのちでも、抵抗vi’を通じてわずかに電流
が流れる。このためダイオードD、に過当な抵抗のもの
を選ぶことにより、a−b間に、必要な電位差を生じさ
せることができる。これは電圧検知素子PUTlのアノ
ード、ゲーFに初期の安定した電位差を生じさせる効果
がある。Now, when the temperature rises rapidly, the voltage at rounded point a, where the resistance value of the thermistor T11 decreases flA sharply, also decreases rapidly. On the other hand, the voltage at the second point gradually decreases because -bhe is slowly discharged from the capacitor C1 through the resistor VB and the surcessor Th. When the temperature rises slowly, the voltages at point a, 'b, and ao all gradually decrease. Therefore, by appropriately selecting the value of the capacitor C2 and its resistance VR to determine the discharge time WLVr, it is possible to generate the necessary potential difference between points a and b depending on the rate of temperature rise. Therefore, by comparing points a and b, a circuit is created that switches thyristor 8 (3R) when the temperature rises above a certain rate.Also, by comparing point a and the fixed voltage point 0, it is determined that the temperature has become constant. When, thyristor 80
A circuit for switching R is created. Capacitor C! With this connection, a small amount of current will flow through the resistor vi' even after the capacitor is fully charged. Therefore, by selecting diode D with an appropriate resistance, a necessary potential difference can be generated between a and b. This has the effect of producing an initial stable potential difference between the anode of the voltage sensing element PUTl and the gate F.
また電圧検知素子はPUT以外の差動比較器でもよい、
スイッチング素子線サイリスタのほかトランジスタのよ
うな半導一体スイツチング素子であ接続せる抵抗へにサ
ーミスタThを直列接続した温度検知回路、2個の抵抗
R,、R,よシなる分圧回路、及びスイッチング素子よ
りなる短絡回路を具備し、前記温度検知回路のサーミス
タT11の両端に可変抵抗VBとコンデンサC−染なる
充放電回路を接続し、前記感温素子とコンデンサ0端子
電圧を比[検出して、前記スイッチング素子80Rをト
リガする電圧検知素子PUTlよりなる温度上昇検出回
路と前記感温素子の端子電圧と分圧回路の分圧点電圧1
を比較検出してスイッチング累芋1t(jlRをトリガ
する電圧検知素子PUTgよpなる定温検出回路で構成
してなる補償式スポット製感知器としたので、従来の機
械式では必要であった接点ギャップのねじによる調整や
り一7孔の径や長さ等の高一部品精度を必要としないか
ら容易に生産でき、腐食性ガスに%強く、経年変化にと
もなう部品の変形による誤動作がなくなりた。し春も半
導体式としては、感温素子を1個にしたため、感温素子
の特性のバラツキは放電用抵抗R,&コンデンサC冨に
よる時定数の調整により吸収できるため、高精度の感温
素子を用−る必要がなくなった。特に感温素子が1個だ
けでよいので2個あるいは8個用いた場合のように熱容
量に差をつける必要もないので簡単なものになった。ま
た感度調整も可変抵抗1箇所のみで行なう仁とがで倉、
製造上好都合である。Also, the voltage detection element may be a differential comparator other than PUT.
A temperature detection circuit in which a thermistor Th is connected in series with a resistor connected by a semiconductor integrated switching element such as a transistor in addition to a thyristor, a voltage dividing circuit consisting of two resistors R, , R, and a switching element. A charging/discharging circuit consisting of a variable resistor VB and a capacitor C is connected to both ends of the thermistor T11 of the temperature sensing circuit, and the temperature sensing element and the capacitor 0 terminal voltage are compared [detected]. , a temperature rise detection circuit including a voltage detection element PUTl that triggers the switching element 80R, a terminal voltage of the temperature sensing element, and a voltage dividing point voltage 1 of the voltage dividing circuit.
The compensating spot sensor consists of a constant temperature detection circuit consisting of a voltage detection element PUTg which triggers the switching signal 1t (jlR) by comparing and detecting the switching voltage. It is easy to produce because it does not require high precision parts such as the diameter and length of the holes, is resistant to corrosive gases, and eliminates malfunctions due to deformation of parts due to aging. As for the spring, the semiconductor type uses only one temperature sensing element, so variations in the characteristics of the temperature sensing element can be absorbed by adjusting the time constant using the discharge resistor R and capacitor C, making it possible to use a high precision temperature sensing element. In particular, since only one temperature sensing element is required, there is no need to differentiate the heat capacity as would be the case with two or eight, making it easier to adjust the sensitivity. Jintogadekura, which is performed with only one variable resistor,
It is convenient for manufacturing.
図面社本発明の実施例の回路図である。
Eは火災受信機、Thはサーミスタ、へ社抵抗、へ社コ
ンデンサ、vRはコンデンサ放電用抵抗、PUTl、2
は電圧検知素子、譜へは抵抗、8CR祉スイッチング素
子FIG. 1 is a circuit diagram of an embodiment of the present invention. E is the fire receiver, Th is the thermistor, hexa resistor, hexa capacitor, vR is the capacitor discharge resistor, PUTl, 2
is a voltage detection element, a resistor is a resistance, and an 8CR switching element
Claims (1)
抵抗R2にサーミスタTllを直列接続した温度検知回
路、2個の抵抗RPR,よりなる分圧回路、及びスイッ
チング素子よ)なろ短絡回路を具備し、前記温度検知回
路のサーミスタThの両端に可変抵抗VBとコンデンt
C!よりなる充放電回路を接続し1前記感温素子とコン
デンすの端子電圧を比較検出して、前記スイッチング素
子80Bをトリガする電圧検知素子PUT lよ)なる
温度上昇検出回路と前記感温素子の端子電圧と分圧回路
の分圧点電圧を比較検出してスイッチング素子80Kを
トリガする電圧検知素子PUT2よりなる定温検出回路
で構成してなる補償式スボフ)8Ilffi知器0(1) Fire Receiver E A variable resistor VB and a capacitor T are provided at both ends of the thermistor Th of the temperature detection circuit.
C! A voltage detection element PUT which compares and detects the terminal voltages of the temperature sensing element and the capacitor to trigger the switching element 80B; Compensated type suboff) 8Ilffi detector 0 consisting of a constant temperature detection circuit consisting of a voltage detection element PUT2 that compares and detects the terminal voltage and the voltage division point voltage of the voltage division circuit and triggers the switching element 80K.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13746781A JPS5839397A (en) | 1981-08-31 | 1981-08-31 | Compensation type spot sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13746781A JPS5839397A (en) | 1981-08-31 | 1981-08-31 | Compensation type spot sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5839397A true JPS5839397A (en) | 1983-03-08 |
Family
ID=15199283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13746781A Pending JPS5839397A (en) | 1981-08-31 | 1981-08-31 | Compensation type spot sensor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5839397A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59119055U (en) * | 1983-01-28 | 1984-08-11 | 日本無線株式会社 | CO↓2 laser tube |
JPS60116257U (en) * | 1984-01-11 | 1985-08-06 | 株式会社ダイヘン | laser oscillator |
JPS62243380A (en) * | 1986-04-16 | 1987-10-23 | Mitsubishi Electric Corp | Drying agent vessel for laser oscillator |
JPH02306675A (en) * | 1989-05-22 | 1990-12-20 | Amada Co Ltd | Laser oscillator |
JPH06186090A (en) * | 1992-07-03 | 1994-07-08 | Hochiki Corp | Thermal analog fire detector |
-
1981
- 1981-08-31 JP JP13746781A patent/JPS5839397A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59119055U (en) * | 1983-01-28 | 1984-08-11 | 日本無線株式会社 | CO↓2 laser tube |
JPH0115185Y2 (en) * | 1983-01-28 | 1989-05-08 | ||
JPS60116257U (en) * | 1984-01-11 | 1985-08-06 | 株式会社ダイヘン | laser oscillator |
JPH0334926Y2 (en) * | 1984-01-11 | 1991-07-24 | ||
JPS62243380A (en) * | 1986-04-16 | 1987-10-23 | Mitsubishi Electric Corp | Drying agent vessel for laser oscillator |
JPH02306675A (en) * | 1989-05-22 | 1990-12-20 | Amada Co Ltd | Laser oscillator |
JPH06186090A (en) * | 1992-07-03 | 1994-07-08 | Hochiki Corp | Thermal analog fire detector |
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