IT8024325A0 - DIRECT CURRENT SIGNALING SYSTEM. - Google Patents
DIRECT CURRENT SIGNALING SYSTEM.Info
- Publication number
- IT8024325A0 IT8024325A0 IT8024325A IT2432580A IT8024325A0 IT 8024325 A0 IT8024325 A0 IT 8024325A0 IT 8024325 A IT8024325 A IT 8024325A IT 2432580 A IT2432580 A IT 2432580A IT 8024325 A0 IT8024325 A0 IT 8024325A0
- Authority
- IT
- Italy
- Prior art keywords
- direct current
- signaling system
- current signaling
- direct
- signaling
- Prior art date
Links
- 230000011664 signaling Effects 0.000 title 1
Classifications
-
- 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
-
- 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
- G08B25/04—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 a single signalling line, e.g. in a closed loop
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Alarm Systems (AREA)
- Fire Alarms (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2935335A DE2935335C2 (en) | 1979-08-31 | 1979-08-31 | DC alarm system |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8024325A0 true IT8024325A0 (en) | 1980-08-28 |
IT1132498B IT1132498B (en) | 1986-07-02 |
Family
ID=6079786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT24325/80A IT1132498B (en) | 1979-08-31 | 1980-08-28 | DIRECT CURRENT SIGNALING SYSTEM |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT384315B (en) |
DE (1) | DE2935335C2 (en) |
IT (1) | IT1132498B (en) |
NL (1) | NL8004913A (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2114341B (en) * | 1982-01-30 | 1985-04-11 | Ferranti Ltd | Monitoring system |
GB2117150B (en) * | 1982-02-26 | 1986-03-19 | Morrison John M | Intruder alarm system |
DE3211550C2 (en) * | 1982-03-29 | 1985-02-14 | Siemens AG, 1000 Berlin und 8000 München | DC alarm system |
GB2138187B (en) * | 1983-04-08 | 1986-09-10 | Morrison John M | Burglar alarm system |
DE3570779D1 (en) * | 1984-09-12 | 1989-07-06 | Siemens Ag | Annunciator identification method and device in an alarm system |
DE3570780D1 (en) * | 1984-09-12 | 1989-07-06 | Siemens Ag | Annunciator identification arrangement in an alarm system |
EP0178451B1 (en) * | 1984-09-12 | 1989-05-03 | Siemens Aktiengesellschaft | Annunciator identification arrangement in an alarm system |
DE3620681A1 (en) * | 1986-06-20 | 1987-12-23 | Merk Gmbh Telefonbau Fried | Circuit arrangement for identifying alarm signalling units |
DE3719988A1 (en) * | 1987-06-15 | 1988-12-29 | Total Feuerschutz Gmbh | INDIVIDUAL IDENTIFICATION |
FR2664408A1 (en) * | 1990-07-04 | 1992-01-10 | Spie Trindel | Monitoring and alarm installation |
EP0602570B1 (en) * | 1992-12-18 | 1999-05-06 | Siemens Aktiengesellschaft | Alarm system |
DE10051329C2 (en) * | 2000-10-10 | 2003-12-11 | Job Lizenz Gmbh & Co Kg | Alarm system |
DE102010056006B4 (en) | 2010-12-23 | 2019-05-09 | Volkswagen Ag | Method for monitoring a pipeline network for a vehicle and corresponding monitoring device and vehicle |
US9633554B1 (en) * | 2015-10-14 | 2017-04-25 | Honeywell International Inc. | Fire alarm loop calibration and fault location |
EP3540706B1 (en) * | 2018-03-14 | 2020-10-21 | Siemens Schweiz AG | System and method for addressing distant actuated safety devices |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE873055C (en) * | 1950-04-02 | 1953-04-09 | J C Eckardt A G | Electrical monitoring device |
SE402660B (en) * | 1970-11-12 | 1978-07-10 | Securitas Int Ab | FIREPLACE FACILITY |
DE2705045A1 (en) * | 1977-02-08 | 1978-08-10 | Howaldtswerke Deutsche Werft | Transducer location differentiation in monitoring networks - uses single supply transmission line with branched distributors having resistors and diodes in series |
DE2749660A1 (en) * | 1977-11-05 | 1979-05-10 | Licentia Gmbh | Signalling and alarm system - has contact shunted by diode, so that in case of alarm supply voltage is rectified |
-
1979
- 1979-08-31 DE DE2935335A patent/DE2935335C2/en not_active Expired
-
1980
- 1980-08-28 IT IT24325/80A patent/IT1132498B/en active
- 1980-08-28 AT AT0436180A patent/AT384315B/en not_active IP Right Cessation
- 1980-08-29 NL NL8004913A patent/NL8004913A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
DE2935335A1 (en) | 1981-03-19 |
AT384315B (en) | 1987-10-27 |
NL8004913A (en) | 1981-03-03 |
IT1132498B (en) | 1986-07-02 |
DE2935335C2 (en) | 1985-08-08 |
ATA436180A (en) | 1987-03-15 |
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