EP0362797A2 - Procédé pour un fonctionnement économique en énergie de détecteurs de danger dans un dispositif de détection de danger - Google Patents
Procédé pour un fonctionnement économique en énergie de détecteurs de danger dans un dispositif de détection de danger Download PDFInfo
- Publication number
- EP0362797A2 EP0362797A2 EP89118338A EP89118338A EP0362797A2 EP 0362797 A2 EP0362797 A2 EP 0362797A2 EP 89118338 A EP89118338 A EP 89118338A EP 89118338 A EP89118338 A EP 89118338A EP 0362797 A2 EP0362797 A2 EP 0362797A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- detector
- time
- microcomputer
- voltage
- switched
- 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
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
Definitions
- the invention relates to a method for the energy-saving operation of hazard detectors in a hazard detection system, which operates in the pulse detection system according to the principle of chain synchronization, with a control center with several two-wire primary reporting lines, to which a plurality of detectors are connected in a chain, which are routinely operated from the control center cyclically controlled and queried for their respective analog detector measured value, each detector having a voltage measuring device that monitors the line voltage applied, a downstream logic logic with an associated sensor, a downstream control device, an energy store and a switching transistor, the logic logic being formed by a microcomputer.
- Such a hazard alarm system is known from DE-PS 25 33 382.
- the individual detectors are connected in a chain to the detection line.
- the measured values of the individual detectors are queried cyclically from the control center and sent to the central evaluation device in order to obtain differentiated fault or alarm messages from the analog values to be linked.
- all detectors are disconnected from the detection line by a voltage change and then switched on again in a predetermined order in such a way that each detector, after a time delay corresponding to its measured value, is additionally connected to the subsequent detector by means of a switching transistor arranged in one of the wires of the detection line turns on.
- the respective detector address is derived from the number of previous increases in the line current and the analog measured value from the length of the relevant switching delays.
- the detectors are operated from their energy stores during this time. After the query, the energy stores are recharged during the so-called rest period with increased line voltage.
- Control commands can also be transmitted from the control center to the individual detectors, which are received by the individual detectors, as is already known from DE-PS 25 33 354.
- the data received and reported by the individual detectors can also be transmitted in the form of pulse telegrams within certain time windows.
- the object of the invention is to provide, while avoiding the disadvantages described above, a method for the energy-saving operation of hazard detectors in a hazard alarm system, which allows a relatively simple and reliable switching on and off of a microcomputer.
- This object is achieved with a method described at the outset in that the microcomputer is switched to an energy-saving idle state and switched on again as a function of certain switching criteria that are specific to the hazard alarm system, with a required start-up time being guaranteed for the microcomputer.
- the special feature of the method according to the invention is that no additional and complex criteria have to be created specifically. Rather, switching criteria are used for switching the microcomputer on and off in the respective detector, which are specific to a hazard detection system and already exist, i.e. which are used and designed in a special way for this.
- the cyclical interrogation in turn gives each detector a certain voltage (an activation voltage) which switches the microcomputer on, but only after one the specified start-up time activates the detector.
- the data exchange with the control center then takes place, ie the detector receives and sends (reports) signals.
- the microcomputer is then switched off by switching to the next detector.
- the connection voltage is expediently formed by the interrogation voltage.
- the method according to the invention modifies the known chain modulation in such a way that each detector initially remains inactive for a predetermined start-up time after application of the interrogation voltage, then processes its data traffic with the control center in a specific reception time and response time and then switches through to the next detector.
- the microcomputer of each detector can start up with the specified start-up time. When switching to the next detector, the microcomputer is switched off again. The microcomputer is thus switched on for an optimally short time and consequently less energy is consumed on average.
- the start-up time for the microcomputer is obtained in a special way without having to provide a separate start-up time for each detector. All that is required is a first start-up time for the microcomputer of the first detector. After this start-up time, the first detector switches directly to the second detector. In the subsequent reception and transmission time of the first detector, the data communication between the first detector and the control center takes place. This reception and response time is also the start-up time for the microcomputer of the second detector. This process continues until the last detector. This procedure considerably reduces the time required and thus extends the available rest period in which the energy storage devices of the detectors are charged. This allows an increase in the sampling rate and / or an increased energy supply.
- a plurality of detectors M1 to Mn are connected to a central station Z here, for example, only on one reporting primary line ML.
- the line current IL flows on the signal line ML and the line voltage UL is present, which can be switched to different values (FIG. 1).
- the detector M shown in FIG. 2 has, in addition to the switching transistor T switched on in the one wire of the detection line ML, the logic logic VL, which is the heart of the detector and is formed by a microcomputer.
- the logic logic serves the actual sensor part.
- the logic logic VL is acted upon by the voltage measuring device MU, which monitors the line voltage UL and transmits switching signals to the logic logic VL in accordance with the line voltage applied.
- This logic logic causes signals to a control device ST and also signals for switching DS of the switching transistor T so that the following detector is connected to the line voltage.
- Fig. 3 shows how the individual detectors are switched on in sequence.
- the line voltage UL is plotted against the time t for the detectors M1 to M3.
- the rest voltage UR is present on the detection line ML.
- An interrogation cycle then begins with the disconnection of the line from the line voltage UL, i.e. the starting voltage US, which is preferably zero, is applied for the starting time ts. After the start time ts has elapsed, the actual query of the entire detection line begins for the time t1a.
- the interrogation voltage UA is preferably below the value of the quiescent voltage UR. It is shown for the detector M2 that it receives the interrogation voltage UA only after the DS of the first detector M1 has been switched through. The same applies to detector M3.
- the data transmission to the detector generally takes place by modulating the line voltage UL in the control center, while data transmission to the control center is carried out by modulating the line current IL in the detector.
- FIG 4 shows the profile of the line voltage UL over time t at the input of the detectors M1, M2 and M3.
- the open circuit voltage UR is applied for the rest time tr.
- the application of the interrogation voltage UA which is also the switch-on voltage UAN for the microcomputer, acts on the first detector, which is activated after the start-up time tan and thus receives reception signals E1 from the control center for the reception time te and then response signals A1 in time Ta can report to the headquarters.
- the detector M1 then switches to detector M2 through (DS).
- the detector M2 is in turn activated within the start-up time tan and then starts with the data traffic to the head office.
- the third detector is then switched through. If the primary signal line ML is queried, the open circuit voltage UR is applied to the signal line. With the respective switching through DS to the next detector, the microcomputer of the detector concerned is switched off again, so that the microcomputer only requires energy for an optimally short time.
- FIG. 5 shows a further embodiment of the method according to the invention on a voltage diagram for three detectors. Only a single start-up time is required for all detectors on a line, which advantageously reduces the polling time per detector. As a result, the number of detectors that can be connected can be increased and / or the query can be accelerated. In any case, the respective microcomputer is only switched on for a short time. When the interrogation voltage UA is applied, the microcomputer of the first detector starts up. During this time, the detector receives received signals E0 from the control center and could then report an answer A0 to the control center. Neither is possible, however, because the microcomputer is still starting up and is therefore not functional.
- the functionality is only awakened during the response time ta0, so that the first detector can receive and process the receive signal E1 intended for it only after this start-up time tan1.
- detector M1 When signals E1 are received from the control center, detector M1 immediately switches through to detector M2 (DS).
- the start-up time tan2 runs for the second detector M2, which then switches through to the third detector M3 (DS) as soon as it receives the data E2 from the control center.
- each detector switches through to the next detector immediately upon receipt of the first signals from the control center . This process is repeated in the same way for the other detectors on the line, until after the last detector has been processed, the line is again connected to the open circuit voltage.
- the received signals can be carried out in part with the voltage level that corresponds to the quiescent voltage, which advantageously shortens the time required for the energy supply and thus increases the number of detectors that can be connected and / or speeds up the query.
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Alarm Systems (AREA)
- Emergency Alarm Devices (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3834043 | 1988-10-06 | ||
| DE3834043 | 1988-10-06 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP0362797A2 true EP0362797A2 (fr) | 1990-04-11 |
| EP0362797A3 EP0362797A3 (fr) | 1991-01-16 |
| EP0362797B1 EP0362797B1 (fr) | 1994-12-28 |
| EP0362797B2 EP0362797B2 (fr) | 2000-05-17 |
Family
ID=6364534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89118338A Expired - Lifetime EP0362797B2 (fr) | 1988-10-06 | 1989-10-03 | Procédé pour un fonctionnement économique en énergie de détecteurs de danger dans un dispositif de détection de danger |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0362797B2 (fr) |
| AT (1) | ATE116464T1 (fr) |
| DE (1) | DE58908831D1 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4030298A1 (de) * | 1990-09-25 | 1992-03-26 | Siemens Ag | Gefahrenmeldeanlage |
| WO2011054458A1 (fr) * | 2009-10-26 | 2011-05-12 | Phoenix Contact Gbmh & Co. Kg | Système de communication de sécurité pour signaler des états du système |
| EP2515553A3 (fr) * | 2011-04-21 | 2014-04-30 | Phoenix Contact GmbH & Co. KG | Système de communication de süreté destiné à la signalisation d'états du système |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2131991B (en) * | 1982-11-12 | 1986-05-29 | Robert Philp | Telemetry and like signaling systems |
| DE3313137A1 (de) * | 1983-04-12 | 1984-10-18 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung zur stoersignalunterdrueckung in optischen rauchmeldern |
| KR910008738B1 (ko) * | 1987-02-20 | 1991-10-19 | 닛본 덴기 가부시기가이샤 | 밧데리 절약 채널 스캔 기능을 갖고 있는 휴대용 무선 송수신기 |
-
1989
- 1989-10-03 DE DE58908831T patent/DE58908831D1/de not_active Expired - Fee Related
- 1989-10-03 AT AT89118338T patent/ATE116464T1/de not_active IP Right Cessation
- 1989-10-03 EP EP89118338A patent/EP0362797B2/fr not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4030298A1 (de) * | 1990-09-25 | 1992-03-26 | Siemens Ag | Gefahrenmeldeanlage |
| WO2011054458A1 (fr) * | 2009-10-26 | 2011-05-12 | Phoenix Contact Gbmh & Co. Kg | Système de communication de sécurité pour signaler des états du système |
| EP2515553A3 (fr) * | 2011-04-21 | 2014-04-30 | Phoenix Contact GmbH & Co. KG | Système de communication de süreté destiné à la signalisation d'états du système |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0362797A3 (fr) | 1991-01-16 |
| DE58908831D1 (de) | 1995-02-09 |
| ATE116464T1 (de) | 1995-01-15 |
| EP0362797B2 (fr) | 2000-05-17 |
| EP0362797B1 (fr) | 1994-12-28 |
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