JPS57152250A - Centralized monitoring system for alarm - Google Patents
Centralized monitoring system for alarmInfo
- Publication number
- JPS57152250A JPS57152250A JP56036379A JP3637981A JPS57152250A JP S57152250 A JPS57152250 A JP S57152250A JP 56036379 A JP56036379 A JP 56036379A JP 3637981 A JP3637981 A JP 3637981A JP S57152250 A JPS57152250 A JP S57152250A
- Authority
- JP
- Japan
- Prior art keywords
- alarm
- signals
- panels
- monitoring device
- fault
- 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
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
- G08B26/001—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel
- G08B26/002—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel only replying the state of the sensor
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
PURPOSE:To detect the fault of a complex circuit easily by generating many alarm signals by transmitting pulses, which each have an added address, to respective panels from an alarm monitoring device all the time, and returning signals, generated as alarm ones, from the panels when a fault occurs. CONSTITUTION:From the clock pulse generator 32 of an alarm monitoring device 31, a clock pulse having an added frame pulse is transmitted to respective panels 36-1-36-n. This pulse is detected by frame pulse detectors 37 to clear counters 38-1, 38-2-, which count clocks successively. When an alarm signal is inputted to alarm terminals 43 and 44, the alarm signal is added to clock pulses inputted to AND gates 39 and 40 and waveform-shaped by counters 38-1, 38-2-, thereby returning the resulting signals to the monitoring device 31 through gate circuits 41 and 42. Then, many alarm signals are generated by the panels 36-1- 36-n to detect the fault of the complex circuit easily.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56036379A JPS57152250A (en) | 1981-03-13 | 1981-03-13 | Centralized monitoring system for alarm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56036379A JPS57152250A (en) | 1981-03-13 | 1981-03-13 | Centralized monitoring system for alarm |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57152250A true JPS57152250A (en) | 1982-09-20 |
Family
ID=12468207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56036379A Pending JPS57152250A (en) | 1981-03-13 | 1981-03-13 | Centralized monitoring system for alarm |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57152250A (en) |
-
1981
- 1981-03-13 JP JP56036379A patent/JPS57152250A/en active Pending
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