GB2067321B - Monitoring apparatus - Google Patents
Monitoring apparatusInfo
- Publication number
- GB2067321B GB2067321B GB8000544A GB8000544A GB2067321B GB 2067321 B GB2067321 B GB 2067321B GB 8000544 A GB8000544 A GB 8000544A GB 8000544 A GB8000544 A GB 8000544A GB 2067321 B GB2067321 B GB 2067321B
- Authority
- GB
- United Kingdom
- Prior art keywords
- monitoring apparatus
- monitoring
- 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
- G08B29/02—Monitoring continuously signalling or alarm systems
- G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
- G08B29/08—Signalling of tampering with the line circuit
-
- 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
- G08B25/06—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 using power transmission lines
-
- 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
- G08B29/02—Monitoring continuously signalling or alarm systems
- G08B29/04—Monitoring of the detection circuits
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8000544A GB2067321B (en) | 1980-01-08 | 1980-01-08 | Monitoring apparatus |
EP81300065A EP0032135A3 (en) | 1980-01-08 | 1981-01-08 | Monitoring apparatus |
ZA00810120A ZA81120B (en) | 1980-01-08 | 1981-01-08 | Monitoring apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8000544A GB2067321B (en) | 1980-01-08 | 1980-01-08 | Monitoring apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2067321A GB2067321A (en) | 1981-07-22 |
GB2067321B true GB2067321B (en) | 1983-07-06 |
Family
ID=10510505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8000544A Expired GB2067321B (en) | 1980-01-08 | 1980-01-08 | Monitoring apparatus |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0032135A3 (en) |
GB (1) | GB2067321B (en) |
ZA (1) | ZA81120B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2119981B (en) * | 1982-01-07 | 1985-08-07 | Morrison John M | Alarm systems |
IT1159756B (en) * | 1982-03-18 | 1987-03-04 | Zanussi Zeltron Inst | CONVEYED WAVE CONTROL AND SAFETY SYSTEM |
FR2578372B1 (en) * | 1985-03-01 | 1987-05-15 | Fichet Bauche | METHOD FOR TRANSMITTING SIGNALS, IN PARTICULAR FOR MONITORING A SET OF ZONES TO BE PROTECTED, BETWEEN A CENTRAL STATION AND A PLURALITY OF DETECTION CIRCUITS CONNECTED THEREWITH BY A TRANSMISSION MEDIUM AND SYSTEM FOR IMPLEMENTING SAME SUCH A PROCESS |
GB8512655D0 (en) * | 1985-05-20 | 1985-06-26 | London Technology Network | Security systems |
GB8526294D0 (en) * | 1985-10-24 | 1985-11-27 | Pcg Designs Ltd | Alarm & signalling systems |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1390913A (en) * | 1971-05-24 | 1975-04-16 | Microwave & Electronic Syst | Monitoring systems |
US3925763A (en) * | 1973-09-13 | 1975-12-09 | Romesh Tekchand Wadhwani | Security system |
DE2749169A1 (en) * | 1977-11-03 | 1979-05-10 | Elektronik Geraete Gmbh | Automatic burglar alarm system - has central control and detector stages coupled over lighting mains circuit |
-
1980
- 1980-01-08 GB GB8000544A patent/GB2067321B/en not_active Expired
-
1981
- 1981-01-08 ZA ZA00810120A patent/ZA81120B/en unknown
- 1981-01-08 EP EP81300065A patent/EP0032135A3/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
GB2067321A (en) | 1981-07-22 |
EP0032135A2 (en) | 1981-07-15 |
ZA81120B (en) | 1982-01-27 |
EP0032135A3 (en) | 1982-02-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee | ||
711A | Proceeding under section 117(1) patents act 1977 |