JPH01151248U - - Google Patents
Info
- Publication number
- JPH01151248U JPH01151248U JP4739388U JP4739388U JPH01151248U JP H01151248 U JPH01151248 U JP H01151248U JP 4739388 U JP4739388 U JP 4739388U JP 4739388 U JP4739388 U JP 4739388U JP H01151248 U JPH01151248 U JP H01151248U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power supply
- optical coupling
- coupling element
- gas sensor
- 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
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
第１図は本考案による第１の実施例を示すブロ
ツク構成図、第２図は本考案による第２の実施例
を示すブロツク構成図、第３図は従来の回路図で
ある。
１……直流電源回路、２……気体センサ、３…
…光結合素子、４……可変抵抗、５……直流電源
回路、６……マイクロコンピユータ、７……プル
アツプ抵抗、８……制御回路、９……抵抗、１０
……抵抗、１１……光結合素子、１２……抵抗、
１３……比較回路、１４……抵抗、１５……光結
合素子、１６……抵抗、１７……コンデンサ、１
８……入力端子、１９……出力端子。
FIG. 1 is a block diagram showing a first embodiment according to the present invention, FIG. 2 is a block diagram showing a second embodiment according to the present invention, and FIG. 3 is a conventional circuit diagram. 1...DC power supply circuit, 2...Gas sensor, 3...
... Optical coupling element, 4 ... Variable resistor, 5 ... DC power supply circuit, 6 ... Microcomputer, 7 ... Pull-up resistor, 8 ... Control circuit, 9 ... Resistor, 10
...Resistance, 11 ... Optical coupling element, 12 ... Resistance,
13... Comparison circuit, 14... Resistor, 15... Optical coupling element, 16... Resistor, 17... Capacitor, 1
8...Input terminal, 19...Output terminal.
Claims (1)
御用回路を接続した直流電源回路の二つの独立し
た直流電源回路を有する気体検出回路において、
入力側の発光素子と出力側のスイツチング動作す
る受光素子を同一のパツケージに封止して伝達特
性にしきい値入力電流を有する光結合素子とし、
該光結合素子の入力側を前記気体センサ回路に直
列に接続し、出力側を前記制御用回路に接続した
ことを特徴とする気体検出回路。 In a gas detection circuit having two independent DC power supply circuits, a DC power supply circuit connected to a gas sensor circuit and a DC power supply circuit connected to a control circuit,
A light emitting element on the input side and a light receiving element that performs switching operation on the output side are sealed in the same package to form an optical coupling element having a threshold input current as a transfer characteristic,
A gas detection circuit characterized in that an input side of the optical coupling element is connected in series to the gas sensor circuit, and an output side is connected to the control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4739388U JPH01151248U (en) | 1988-04-08 | 1988-04-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4739388U JPH01151248U (en) | 1988-04-08 | 1988-04-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01151248U true JPH01151248U (en) | 1989-10-19 |
Family
ID=31273603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4739388U Pending JPH01151248U (en) | 1988-04-08 | 1988-04-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01151248U (en) |
-
1988
- 1988-04-08 JP JP4739388U patent/JPH01151248U/ja active Pending
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