JPS6192838U - - Google Patents
Info
- Publication number
- JPS6192838U JPS6192838U JP17796084U JP17796084U JPS6192838U JP S6192838 U JPS6192838 U JP S6192838U JP 17796084 U JP17796084 U JP 17796084U JP 17796084 U JP17796084 U JP 17796084U JP S6192838 U JPS6192838 U JP S6192838U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- circuit
- network
- parallel
- infrared 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
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Radiation Pyrometers (AREA)
Description
第１図は、本考案によるサーミスタ赤外線検出
回路の実施例を示す回路図である。第２図は、第
１図の動作を説明するための線図である。第３図
は、本考案の効果を説明するための線図である。
第４図は、従来例の出力特性を示す線図である。
第５図は、従来例の回路図である。
ＴＨ１……赤外線検出用サーミスタ、ＴＨ２…
…温度補償用サーミスタ、Ａ１〜Ａ３……増幅器
、Ｅ……電源、Ｒ……赤外線検出用サーミスタの
抵抗、Ｒ２……温度補償用サーミスタの抵抗、Ｒ
３，Ｒ４，Ｐ１，Ｓ１，Ｑ１，Ｐ２，Ｓ２，Ｑ２
……抵抗、Ｖｏ……ブリツジの不平衡電圧、Ｖ１
……抵抗Ｑ２に印加去れる電圧、Ｔａ……周囲温
度。
FIG. 1 is a circuit diagram showing an embodiment of a thermistor infrared detection circuit according to the present invention. FIG. 2 is a diagram for explaining the operation of FIG. 1. FIG. 3 is a diagram for explaining the effects of the present invention.
FIG. 4 is a diagram showing the output characteristics of the conventional example.
FIG. 5 is a circuit diagram of a conventional example. TH1...Thermistor for infrared detection, TH2...
...Temperature compensation thermistor, A1 to A3 ...Amplifier, E...Power supply, R...Resistance of the thermistor for infrared detection, R2 ...Resistance of the thermistor for temperature compensation, R
3 , R 4 , P 1 , S 1 , Q 1 , P 2 , S 2 , Q 2
...Resistance, Vo...Bridge unbalanced voltage, V 1
...Voltage that can be applied to resistor Q2 , Ta...Ambient temperature.
Claims (1)
抗Ｐ１と該並列回路に直列に抵抗Ｓ１、抵抗Ｑ１
の順序で接続された第１の抵抗回路網と、温度補
償用サーミスタに前記第１の抵抗回路網とまつた
く同じ方法で抵抗Ｐ２，Ｓ２，Ｑ２が接続されて
なる第２の抵抗回路網とを並列に接続し、前記抵
抗Ｑ１，Ｑ２の端子電圧の差を検出するブリツジ
回路を構成し該ブリツジの不平衡電圧に基づき赤
外線を検出する赤外線検出回路に於いて、前記第
１、第２の抵抗回路網が各々比率式サーミスタ測
温体であり且つ前記ブリツジ回路の不平衡電圧を
増幅する第１の増幅器と前記抵抗Ｑ２の端子電圧
を増幅する第２の増幅器と前記第１、第２の増幅
器の出力電圧を加算する手段を備えたことを特徴
とする赤外線検出回路。 A resistor P 1 is connected in parallel to the thermistor for infrared detection, and a resistor S 1 and a resistor Q 1 are connected in series to the parallel circuit.
a first resistor network connected in this order; and a second resistor in which resistors P 2 , S 2 , and Q 2 are connected to the temperature compensation thermistor in exactly the same manner as the first resistor network. In the infrared detection circuit that connects the circuit network in parallel to form a bridge circuit that detects the difference in terminal voltage of the resistors Q 1 and Q 2 and detects infrared rays based on the unbalanced voltage of the bridge, 1. The second resistor network is each a ratio type thermistor temperature sensor, and a first amplifier and the aforementioned bridge circuit amplify the unbalanced voltage; a second amplifier that amplifies the terminal voltage of the resistor Q; An infrared detection circuit comprising means for adding the output voltages of the first and second amplifiers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17796084U JPS6192838U (en) | 1984-11-22 | 1984-11-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17796084U JPS6192838U (en) | 1984-11-22 | 1984-11-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6192838U true JPS6192838U (en) | 1986-06-16 |
Family
ID=30735530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17796084U Pending JPS6192838U (en) | 1984-11-22 | 1984-11-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6192838U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016014622A (en) * | 2014-07-03 | 2016-01-28 | Tdk株式会社 | Sensor circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5434633A (en) * | 1977-08-22 | 1979-03-14 | Nec Corp | Data reader capable of automatic rereading |
| JPS5866028A (en) * | 1981-10-16 | 1983-04-20 | Chino Works Ltd | Light/resistance-value converting element and compensation circuit using the same |
-
1984
- 1984-11-22 JP JP17796084U patent/JPS6192838U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5434633A (en) * | 1977-08-22 | 1979-03-14 | Nec Corp | Data reader capable of automatic rereading |
| JPS5866028A (en) * | 1981-10-16 | 1983-04-20 | Chino Works Ltd | Light/resistance-value converting element and compensation circuit using the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016014622A (en) * | 2014-07-03 | 2016-01-28 | Tdk株式会社 | Sensor circuit |
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