JPS5821849U - gas leak detector - Google Patents
gas leak detectorInfo
- Publication number
- JPS5821849U JPS5821849U JP11639981U JP11639981U JPS5821849U JP S5821849 U JPS5821849 U JP S5821849U JP 11639981 U JP11639981 U JP 11639981U JP 11639981 U JP11639981 U JP 11639981U JP S5821849 U JPS5821849 U JP S5821849U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal voltage
- power supply
- output
- switching circuit
- 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.)
- Granted
Links
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Fire-Detection Mechanisms (AREA)
- Emergency Alarm Devices (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
第１図は本考案の一実施例を示したブロック図、第２図
は第１図の実施例における信号出力回路の一実施例を示
した回路図、第３図は本考案のガス漏れ検出器を用いた
ガス漏れ集中監視装置の実施例を示したブロック図、第
４図は第３図の集中監視装置で用いる中継器の実施例を
示した回路ブロック図、第５図は第３図の集中監視装置
における信号伝送を示したタイムチャートである。
１０、 Ｉ Ｄａ、 １０ｂ−・・ガス漏れ検出器
、１２・・・電源回路、１４・・・ガス濃度検出回路、
１６゜１８・・・スイッチング回路、２０・・・信号出
力回路、２２・・・警報回路ζ２４・・・表示回路、２
６・・・ノアゲート、２８・・・インバータ、３０・・
・アンドゲート、３２−・・発振回路、３４．３４ａ、
３４ｂ−・・中継器、３８・・・伝送ライン、３６・・
・受信機、４０・・・アナログスイッチ、４２・・・周
波数識別回路、４４・・・電源線、４４′・・・コモン
線、４６・・・呼出線、４８・・・応答線、５０・・・
電圧発生回路。
■〔二
１瞥 ３ζα 卵 ａｓ
ｉ １（？ｌ） ａｆｂ 十′
１ ロト干］柵
ミ
１叫
Ｉ゛１Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a circuit diagram showing an embodiment of the signal output circuit in the embodiment of Fig. 1, and Fig. 3 is a gas leak detection according to the present invention. 4 is a circuit block diagram showing an example of a repeater used in the centralized monitoring device of FIG. 3, and FIG. 3 is a time chart showing signal transmission in the central monitoring device of FIG. 10, I Da, 10b-... Gas leak detector, 12... Power supply circuit, 14... Gas concentration detection circuit,
16゜18...Switching circuit, 20...Signal output circuit, 22...Alarm circuit ζ24...Display circuit, 2
6... Noah gate, 28... Inverter, 30...
・AND gate, 32-・oscillation circuit, 34.34a,
34b--Repeater, 38--Transmission line, 36--
- Receiver, 40... Analog switch, 42... Frequency identification circuit, 44... Power line, 44'... Common line, 46... Calling line, 48... Response line, 50...・・・
Voltage generation circuit. ■ [21st glance 3ζα egg as i 1 (?l) afb 10′ 1 Lotto dried] fence mi 1 cry I゛1
Claims (1)
濃度を検出するガス濃度検出回路と、該ガス濃度検出回
路の検出濃度が所定値以上となったときに出力する第１
のスイッチング回路と、上記検出濃度が上記所定値を上
回る他の所定値以上となったときに出力する第２のスイ
ッチング回路と、 上記電源回路が正常で且つ上記第１及び第２のスイッチ
ング回路が出力していないときに第１の信号電圧を出力
し、上記第１のスイッチング回路又は第２のスイッチン
グ回路が出力しているときに、上記第１の信号電圧と異
なる第２の信号電圧又は該第２の信号電圧を転極して得
た第３の信号電圧を出力し、更に、上記電源回路による
電源の印加が断たれたときに、上記各信号電圧とは異な
る零電圧を出力する信号出力回路とからなることを特徴
とするガス漏れ検出器。[Scope of Claim for Utility Model Registration] A gas concentration detection circuit that is activated by power applied from a power supply circuit to detect the surrounding gas concentration, and an output when the detected concentration of the gas concentration detection circuit exceeds a predetermined value. First thing to do
a second switching circuit that outputs an output when the detected concentration exceeds another predetermined value that exceeds the predetermined value, and the power supply circuit is normal and the first and second switching circuits are When the first switching circuit or the second switching circuit is not outputting the first signal voltage, the first signal voltage is output, and when the first switching circuit or the second switching circuit is outputting, a second signal voltage different from the first signal voltage or the second signal voltage A signal that outputs a third signal voltage obtained by reversing the polarity of the second signal voltage, and further outputs a zero voltage different from each of the signal voltages when the power supply from the power supply circuit is cut off. A gas leak detector comprising an output circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11639981U JPS5821849U (en) | 1981-08-05 | 1981-08-05 | gas leak detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11639981U JPS5821849U (en) | 1981-08-05 | 1981-08-05 | gas leak detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5821849U true JPS5821849U (en) | 1983-02-10 |
| JPH0212605Y2 JPH0212605Y2 (en) | 1990-04-09 |
Family
ID=29910623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11639981U Granted JPS5821849U (en) | 1981-08-05 | 1981-08-05 | gas leak detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5821849U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01150272U (en) * | 1988-04-09 | 1989-10-17 | ||
| JP2013128571A (en) * | 2011-12-20 | 2013-07-04 | Nippon Aleph Corp | Composite sensor for game machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55147341A (en) * | 1979-05-08 | 1980-11-17 | Riken Keiki Kk | Alarming device for gas concentration |
| JPS5661450U (en) * | 1979-10-18 | 1981-05-25 |
-
1981
- 1981-08-05 JP JP11639981U patent/JPS5821849U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55147341A (en) * | 1979-05-08 | 1980-11-17 | Riken Keiki Kk | Alarming device for gas concentration |
| JPS5661450U (en) * | 1979-10-18 | 1981-05-25 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01150272U (en) * | 1988-04-09 | 1989-10-17 | ||
| JP2013128571A (en) * | 2011-12-20 | 2013-07-04 | Nippon Aleph Corp | Composite sensor for game machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0212605Y2 (en) | 1990-04-09 |
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