GB1201163A - Monitored supervisory detector - Google Patents
Monitored supervisory detectorInfo
- Publication number
- GB1201163A GB1201163A GB51304/67A GB5130467A GB1201163A GB 1201163 A GB1201163 A GB 1201163A GB 51304/67 A GB51304/67 A GB 51304/67A GB 5130467 A GB5130467 A GB 5130467A GB 1201163 A GB1201163 A GB 1201163A
- Authority
- GB
- United Kingdom
- Prior art keywords
- detectors
- detector
- operated
- nov
- constant current
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/018—Sensor coding by detecting magnitude of an electrical parameter, e.g. resistance
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Alarm Systems (AREA)
- Fire-Detection Mechanisms (AREA)
- Fire Alarms (AREA)
Abstract
1,201,163. Electric selective signalling. ETAB. POUR APPLICATIONS ELECTRONIQUES. 10 Nov., 1967 [17 Nov., 1966], No. 51304/67. Heading G4H. Apparatus for monitoring the operation of detectors 1A, 1B, ... 1N (Fig. 1) is such that when one detector e.g. 1A is operated all the succeeding detectors 1B ... 1N are sequentially operated and supply a constant current signal to a common line 4. By measuring the magnitude of signal on the line 4 e.g. with an ammeter 5 the identity of the first detector to operate may be determined. The detectors are preferably connected to constant current generators 2A, 2B ... 2N e.g. thyratrons or a semiconductors. A battery (B, Fig. 2, not shown) may be connected across the detectors (D1 ... Dn), resistors (R1 ... Rn) being connected to the detectors and to the common line. In a further embodiment silicon controlled rectifiers (Q1 ... Qn, Fig. 3, not shown) or thyristors are actuated when the associated detectors (D1 ... Dn) are operated. The apparatus may be used to identify e.g. a detector operated by a fire or a detector which did not return to its inoperative position in response to a control signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE653696A BE653696A (en) | 1964-09-29 | 1964-09-29 | |
| BE689837 | 1966-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1201163A true GB1201163A (en) | 1970-08-05 |
Family
ID=25656021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB51304/67A Expired GB1201163A (en) | 1964-09-29 | 1967-11-10 | Monitored supervisory detector |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3503067A (en) |
| BE (1) | BE689837A (en) |
| DE (1) | DE1283713B (en) |
| GB (1) | GB1201163A (en) |
| LU (1) | LU54679A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3732439A (en) * | 1969-11-28 | 1973-05-08 | N Calvin | Pulse producing circuit particularly adapted for button type telephones |
| JPS5136119B1 (en) * | 1971-04-15 | 1976-10-06 | ||
| US4001776A (en) * | 1975-08-04 | 1977-01-04 | General Motors Corporation | Multiple indication display |
| US4095220A (en) * | 1976-08-18 | 1978-06-13 | Sadler Joe A | Alarm detection and identification system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE160097C (en) * | ||||
| US3047843A (en) * | 1957-02-15 | 1962-07-31 | Rca Corp | Monitoring circuits |
| LU38227A1 (en) * | 1959-02-17 | |||
| FR1265919A (en) * | 1960-05-24 | 1961-07-07 | Cie Constr Gros Mat Electromec | Improvement in automatic fault reporting systems |
| US3147464A (en) * | 1961-10-16 | 1964-09-01 | Warren L Spielman | First-out annunclator having input and supply control of indicator switching means |
| BE629871A (en) * | 1962-03-23 |
-
1966
- 1966-11-17 BE BE689837D patent/BE689837A/xx unknown
-
1967
- 1967-10-16 LU LU54679D patent/LU54679A1/xx unknown
- 1967-11-10 DE DEE35145A patent/DE1283713B/en active Pending
- 1967-11-10 GB GB51304/67A patent/GB1201163A/en not_active Expired
- 1967-11-13 US US682107A patent/US3503067A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| BE689837A (en) | 1967-05-02 |
| LU54679A1 (en) | 1967-12-18 |
| US3503067A (en) | 1970-03-24 |
| DE1283713B (en) | 1968-11-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |