EP0004910A1 - Avertisseur de danger - Google Patents
Avertisseur de danger Download PDFInfo
- Publication number
- EP0004910A1 EP0004910A1 EP79101029A EP79101029A EP0004910A1 EP 0004910 A1 EP0004910 A1 EP 0004910A1 EP 79101029 A EP79101029 A EP 79101029A EP 79101029 A EP79101029 A EP 79101029A EP 0004910 A1 EP0004910 A1 EP 0004910A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- memory
- multiplex
- read
- lines
- alarm
- 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
Images
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
- G08B26/006—Alarm systems in which substations are interrogated in succession by a central station with substations connected to an individual line, e.g. star configuration
Definitions
- the invention relates to a hazard detection system with a plurality of detectors connected to a control center via signal lines, the status of the detectors in the control center being ascertainable via test devices and being able to be displayed via an evaluation device, a read / write memory in the control center for storing the Occupancy status of each signaling line and a multiplex interrogation device for querying the individual signaling lines and the associated memory locations is provided, and finally the interrogated detector signals together with the interrogated memory signals are passed through a comparison device and can only be switched to the evaluation device if the associated memory location is occupied is determined.
- the object of the invention is to develop a hazard alarm system of the type mentioned at the outset in such a way that the actual occupancy status of all alarm lines can be checked in a simple manner and entered into the read / write memory of the control center.
- this object is achieved in that a multiplex input device is provided at the input of the read-write memory, which is connected synchronously to the multiplex interrogation device and can be switched on via a changeover switch in such a way that the current occupancy of all signal lines can be determined and automatically is writable in the memory.
- the memory is automatically written from the interrogation device; this is preferably controlled by a microcomputer.
- a display device is expediently provided, in which the stored assignment of each individual message line can be made visible.
- the system can be put into operation using a changeover switch, i.e. a command key. From then on, any deviation from the target state now defined is evaluated as a fault.
- the single figure shows the circuit diagram of an alarm system according to the invention with a control center Z, from which individual detection lines L1 to Ln lead to the detectors M1 to Mn.
- the signal lines each lead to a detector interface MA1 to MAn, in which the state of the line or the connected detectors are checked. Depending on this state, a signal r for idle state, a for alarm state or s for fault avoidance appears at one of the three outputs.
- the output signals of the signaling interfaces MA ... MAn are queried synchronously via multitplex interrogation devices, specifically the alarm signals a via the Ab interrogation device MX1, the fault signals s via the interrogation device MX2 and the idle signals r via the interrogation device MX3.
- the alarm signals a and the fault signals s are each fed via a comparison device VG to an evaluation device for alarm signals AA and a fault evaluation AS.
- a memory SP is also provided in the control center, the individual memory locations Sp1 ... Spn of which are each assigned to an alarm line and in which the busy state this relevant message line can be stored. These memory locations Sp1 ... Spn are scanned synchronously with the detector connections via the multiplex interrogation device MX7, and the signal read out from the memory location is compared in the comparison device VG with the incoming fault or alarm signal. Such a detector signal is only passed on to the evaluation device AA or AS via the coincidence elements AN1 and AN2 if the memory location in question is marked as occupied, ie it shows a logical one.
- a multiplex input device MX8 which also runs synchronously with the interrogation devices MX1, MX2 and MX3. If the actual status of the signaling system is now to be recorded and saved, i.e. during commissioning, then the BT operating button is still open.
- the AND gates AN1 and AN2 are blocked via the AND gate AN3 and do not allow any signals emitted by the detector connections to pass.
- Via the OR gate OR1 and the AND gate AN4 on the other hand, an occupied state is written into the memory SP each time an idle signal r 'or an alarm signal a is reported by the relevant detector interface MA1 ... MAn. In these cases, a detector is connected to the relevant detector line.
- a fault signal s is reported, a logical zero is written into the relevant storage location Sp, i.e. that the relevant detector line is saved as "not used”. If the entire memory SP is written, the actual state of the system can be checked via a display device with light-emitting diodes LD1 ... LDn. If this condition is found to be correct, the system can be started using the BT operating button. Now the AND gate AN4 is blocked via the negation gate NE1, so that the memory state can no longer be changed. Fault signals or alarm signals are only passed on to the evaluation device AA or AS via the AND gates AN1 and AN2 if the memory location in question shows the occupied state.
- the alarm evaluation AA and the fault evaluation AS each contain a multiplex output device MX4 and MX5, via which an alarm signal a or a fault signal s of a specific signal line in the display device for switching on the associated LED AD1 ... ADn or SD1 ... SDn is used.
- a flip-flop AF1 ... AF1 or SF1 ... SFn is assigned to each LED.
- the alarm signal is then fed from a bistable alarm switch BAS, which in the usual way gives an acoustic alarm or forwards the alarm message to a higher-level control center.
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Alarm Systems (AREA)
- Fire Alarms (AREA)
- Selective Calling Equipment (AREA)
- Time-Division Multiplex Systems (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2817053A DE2817053C2 (de) | 1978-04-19 | 1978-04-19 | Gefahrenmeldeanlage |
| DE2817053 | 1978-04-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0004910A1 true EP0004910A1 (fr) | 1979-10-31 |
| EP0004910B1 EP0004910B1 (fr) | 1982-06-23 |
Family
ID=6037455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP79101029A Expired EP0004910B1 (fr) | 1978-04-19 | 1979-04-04 | Avertisseur de danger |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4286117A (fr) |
| EP (1) | EP0004910B1 (fr) |
| JP (1) | JPS54142096A (fr) |
| AT (1) | AT373409B (fr) |
| DE (1) | DE2817053C2 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985004039A1 (fr) * | 1984-03-05 | 1985-09-12 | Progrator Innovation Ab | Appareil de surveillance pour un systeme d'alarme |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6165555A (ja) * | 1984-09-05 | 1986-04-04 | Mitsubishi Electric Corp | ホームコントロールシステムおよびインターホンシステム |
| US4672654A (en) * | 1984-12-12 | 1987-06-09 | At&T Company | PBX security system for monitoring security guard tours |
| EP0437658B1 (fr) * | 1990-01-17 | 1994-03-23 | Siemens Aktiengesellschaft | Dispositif de protection pour une machine électrique |
| US7010110B2 (en) * | 1999-03-31 | 2006-03-07 | Walker Digital, Llc | Method and apparatus for monitoring telephone status |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2262823A1 (de) * | 1972-12-22 | 1974-10-10 | Controlmatic Ges F Ind Automat | Alarm- und meldesystem |
| DE2341087A1 (de) * | 1973-08-14 | 1975-02-27 | Siemens Ag | Automatische brandmeldeanlage |
| DE2641489A1 (de) * | 1976-09-15 | 1978-03-16 | Siemens Ag | Verfahren zur uebertragung unterschiedlicher analoger messwerte an eine zentrale von mehreren kettenfoermig an einer meldelinie liegenden brandmeldern |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3842208A (en) * | 1970-01-26 | 1974-10-15 | Paraskevakos Elect & Comm | Sensor monitoring device |
| SE391250B (sv) * | 1974-11-26 | 1977-02-07 | Saab Scania Ab | Bevakningsanleggning, innefattande en centralenhet, somvia en kommunikationskanal er forbunden med ett flertal lokala terminalenheter |
-
1978
- 1978-04-19 DE DE2817053A patent/DE2817053C2/de not_active Expired
-
1979
- 1979-04-04 EP EP79101029A patent/EP0004910B1/fr not_active Expired
- 1979-04-13 US US06/029,831 patent/US4286117A/en not_active Expired - Lifetime
- 1979-04-17 AT AT0283879A patent/AT373409B/de not_active IP Right Cessation
- 1979-04-19 JP JP4848079A patent/JPS54142096A/ja active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2262823A1 (de) * | 1972-12-22 | 1974-10-10 | Controlmatic Ges F Ind Automat | Alarm- und meldesystem |
| DE2341087A1 (de) * | 1973-08-14 | 1975-02-27 | Siemens Ag | Automatische brandmeldeanlage |
| DE2641489A1 (de) * | 1976-09-15 | 1978-03-16 | Siemens Ag | Verfahren zur uebertragung unterschiedlicher analoger messwerte an eine zentrale von mehreren kettenfoermig an einer meldelinie liegenden brandmeldern |
Non-Patent Citations (2)
| Title |
|---|
| CONTROL AND INSTRUMENTATION, Band 10, Nr. 1, Januar 1978, London "Alarms with TDC 2000" Seiten 28, 29, 31. * Seite 28 * * |
| FUNKSCHAU, Heft 26, 1976, Munchen H. KLUTH, "Wachsame Electronik" Seiten 1153 bis 1156. * Seite 1155, mittlere Spalte * * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985004039A1 (fr) * | 1984-03-05 | 1985-09-12 | Progrator Innovation Ab | Appareil de surveillance pour un systeme d'alarme |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2817053C2 (de) | 1985-11-21 |
| AT373409B (de) | 1984-01-25 |
| JPS54142096A (en) | 1979-11-05 |
| JPS6239477B2 (fr) | 1987-08-24 |
| US4286117A (en) | 1981-08-25 |
| DE2817053A1 (de) | 1979-10-31 |
| EP0004910B1 (fr) | 1982-06-23 |
| ATA283879A (de) | 1983-05-15 |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| ITF | It: translation for a ep patent filed |
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