ATE143519T1 - METHOD FOR INCREASING INTERFERENCE IN HAZARD ALARM SYSTEMS - Google Patents
METHOD FOR INCREASING INTERFERENCE IN HAZARD ALARM SYSTEMSInfo
- Publication number
- ATE143519T1 ATE143519T1 AT91110971T AT91110971T ATE143519T1 AT E143519 T1 ATE143519 T1 AT E143519T1 AT 91110971 T AT91110971 T AT 91110971T AT 91110971 T AT91110971 T AT 91110971T AT E143519 T1 ATE143519 T1 AT E143519T1
- Authority
- AT
- Austria
- Prior art keywords
- detector
- alarm systems
- double line
- hazard alarm
- increasing interference
- Prior art date
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
- G08B26/005—Alarm systems in which substations are interrogated in succession by a central station with substations connected in series, e.g. cascade
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Alarm Systems (AREA)
- Selective Calling Equipment (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Emergency Alarm Devices (AREA)
- Small-Scale Networks (AREA)
Abstract
In order to increase the interference immunity in danger signal appliances having chain synchronisation, the detectors (M1-Mn) being arranged in the run of a double line (a, b) connected to a control centre (Z), during the transfer of information from one detector to the control centre (Z) the two wires (a, b) of the double line are to be connected through or disconnected symmetrically with respect to said detector. For this purpose, either the switches (S) of all detectors (M1-Mn) are closed, or a switch (S) is provided in each detector in each wire of the double line (a,b), two switches being connected through or disconnected in this way in each case. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4023766 | 1990-07-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE143519T1 true ATE143519T1 (en) | 1996-10-15 |
Family
ID=6411061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT91110971T ATE143519T1 (en) | 1990-07-26 | 1991-07-02 | METHOD FOR INCREASING INTERFERENCE IN HAZARD ALARM SYSTEMS |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0468234B1 (en) |
AT (1) | ATE143519T1 (en) |
DE (1) | DE59108219D1 (en) |
ES (1) | ES2091265T3 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7533517B2 (en) * | 2005-04-14 | 2009-05-19 | Snecma | Exhaust nozzle for an engine of a flying craft |
US7535687B2 (en) | 2006-04-13 | 2009-05-19 | Ge Security, Inc. | Alarm system sensor topology apparatus and method |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH664637A5 (en) * | 1982-04-28 | 1988-03-15 | Cerberus Ag | METHOD FOR TRANSMITTING MEASURED VALUES IN A MONITORING SYSTEM. |
-
1991
- 1991-07-02 AT AT91110971T patent/ATE143519T1/en not_active IP Right Cessation
- 1991-07-02 EP EP91110971A patent/EP0468234B1/en not_active Expired - Lifetime
- 1991-07-02 ES ES91110971T patent/ES2091265T3/en not_active Expired - Lifetime
- 1991-07-02 DE DE59108219T patent/DE59108219D1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ES2091265T3 (en) | 1996-11-01 |
DE59108219D1 (en) | 1996-10-31 |
EP0468234A3 (en) | 1992-12-09 |
EP0468234A2 (en) | 1992-01-29 |
EP0468234B1 (en) | 1996-09-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
REN | Ceased due to non-payment of the annual fee |