JPS53105197A - Signal processing circuit for fire senfor - Google Patents
Signal processing circuit for fire senforInfo
- Publication number
- JPS53105197A JPS53105197A JP1999677A JP1999677A JPS53105197A JP S53105197 A JPS53105197 A JP S53105197A JP 1999677 A JP1999677 A JP 1999677A JP 1999677 A JP1999677 A JP 1999677A JP S53105197 A JPS53105197 A JP S53105197A
- Authority
- JP
- Japan
- Prior art keywords
- senfor
- fire
- signal processing
- processing circuit
- time aging
- 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
Abstract
PURPOSE:To eliminate the malfunction due to time aging, by detecting the detection level due to time aging of the sensor and developing the trouble signal telling the fault of unit when the detected level reaches a given level.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1999677A JPS53105197A (en) | 1977-02-24 | 1977-02-24 | Signal processing circuit for fire senfor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1999677A JPS53105197A (en) | 1977-02-24 | 1977-02-24 | Signal processing circuit for fire senfor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS53105197A true JPS53105197A (en) | 1978-09-13 |
Family
ID=12014761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1999677A Pending JPS53105197A (en) | 1977-02-24 | 1977-02-24 | Signal processing circuit for fire senfor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS53105197A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60118999A (en) * | 1983-11-30 | 1985-06-26 | 松下電工株式会社 | Intelligence type smoke sensor |
JPH0285994A (en) * | 1989-08-01 | 1990-03-27 | Nohmi Bosai Ltd | Function inspecting device for photoelectric smoke sensor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4922860U (en) * | 1972-05-29 | 1974-02-26 | ||
JPS5148297A (en) * | 1974-10-22 | 1976-04-24 | Nippon Denso Co | Kemurinadono kanchisochi |
-
1977
- 1977-02-24 JP JP1999677A patent/JPS53105197A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4922860U (en) * | 1972-05-29 | 1974-02-26 | ||
JPS5148297A (en) * | 1974-10-22 | 1976-04-24 | Nippon Denso Co | Kemurinadono kanchisochi |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60118999A (en) * | 1983-11-30 | 1985-06-26 | 松下電工株式会社 | Intelligence type smoke sensor |
JPH057760B2 (en) * | 1983-11-30 | 1993-01-29 | Matsushita Electric Works Ltd | |
JPH0285994A (en) * | 1989-08-01 | 1990-03-27 | Nohmi Bosai Ltd | Function inspecting device for photoelectric smoke sensor |
JPH0546000B2 (en) * | 1989-08-01 | 1993-07-12 | Nohmi Bosai Ltd |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |