EP0362798A2 - 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 PDF

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Publication number
EP0362798A2
EP0362798A2 EP89118339A EP89118339A EP0362798A2 EP 0362798 A2 EP0362798 A2 EP 0362798A2 EP 89118339 A EP89118339 A EP 89118339A EP 89118339 A EP89118339 A EP 89118339A EP 0362798 A2 EP0362798 A2 EP 0362798A2
Authority
EP
European Patent Office
Prior art keywords
voltage
microcomputer
detector
switched
energy
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
Application number
EP89118339A
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German (de)
English (en)
Other versions
EP0362798B1 (fr
EP0362798A3 (fr
Inventor
Helfried Dipl.-Ing. Lappe
Otfried Post
Peer Dr.-Ing. Thilo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6364535&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0362798(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to AT89118339T priority Critical patent/ATE101445T1/de
Publication of EP0362798A2 publication Critical patent/EP0362798A2/fr
Publication of EP0362798A3 publication Critical patent/EP0362798A3/fr
Application granted granted Critical
Publication of EP0362798B1 publication Critical patent/EP0362798B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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 works 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 storage 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.
  • CMOS complementary metal-oxide-semiconductor
  • special sensors for example the pulsed measuring part of an optical stray light smoke detector.
  • CMOS complementary metal-oxide-semiconductor
  • the object of the invention is to provide, while avoiding the disadvantages described above, a method for the energy-saving operation of danger detectors in a danger detection 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 microcomputer is used as a function of a certain line voltage (a switch-off voltage) switched to the power-saving idle state and switched on again with the application of another predetermined line voltage, a switch-on voltage, so that the detector is activated after a certain start-up time.
  • a certain line voltage a switch-off voltage
  • the cut-off voltage is expediently formed from the idle voltage that is present anyway and the cut-off voltage from the start voltage likewise required for the cyclical interrogation, which is generally zero and thus switches off all detectors in a line.
  • the microcomputer switches itself into the idle state when the detector in question switches through to the next detector via its switching transistor.
  • a multiplicity of detectors M1 to Mn are connected to a control center here, for example, only on one reporting primary line ML.
  • the line current IL flows on the signaling line and the line voltage UL is present, which can be switched to different values.
  • 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, 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, which monitors the line voltage and gives switching functions 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 to turn on the switching transistor T so that the following detector is connected to the line voltage. It is also indicated by a capacitor C in the detector of the energy store, which is charged in the idle state when a no-load voltage is present and, if necessary, supplies the detector with energy in the disconnected state.
  • 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 by separating the line from the line voltage, i.e. the starting voltage US, which is generally zero, is applied for the starting time ts. After the start time TS has elapsed, the actual query of the entire detection line for the time tla begins.
  • the interrogation voltage UA for this is generally 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.
  • the microcomputer switches itself into the energy-saving idle state when it receives the signal from the voltage measuring device MU that the control center Z has applied the open circuit voltage UR (is the cutoff voltage UAB).
  • the open circuit voltage UR is the cutoff voltage UAB.
  • All the microcomputers (U) are switched off and have only a minimal power consumption in the time tr in which the quiescent voltage UR is applied.
  • All the microcomputers are inactive and can neither operate the sensor section S nor accept or process control commands or send requests from the control center. This is also not necessary in the transmission system based on the principle of chain synchronization.
  • the microcomputers (VL) in all detectors (Mn) are only reactivated when the starting voltage US is applied (is equal to the switching-on voltage UAN), operate the sensor part S and are available for the transmission at the different times of the application of the interrogation voltage UA for the individual detectors from and to the head office.
  • the start time ts corresponds to the start-up time tan for the microcomputer, ie a sufficiently long settling time is available.
  • the microcomputer advantageously only requires significant energy during the short time, which is composed of the start time ts and the line query time tla.
  • the microcomputer switches itself into the energy-saving idle state when it switches through to the next detector via its assigned switching transistor T in the detection line ML (DS).
  • T in the detection line ML ML
  • the time in which the microcomputers are switched off and have minimal power consumption is further extended.
  • the first detector in the line is then in the power-saving state for almost the entire line inquiry time Tla, so that on average all detectors, the microcomputers for half the line inquiry time tla, are active and require energy, which means that the corresponding energy requirement of a signaling primary line continues, to almost half, is reduced. All in all, the microcomputers are only active a few percent of the total time and therefore use little energy.
  • This method according to the invention advantageously does not require any circuit extensions worth mentioning compared to the known method of pulse signaling technology.
  • the improved performance characteristics are achieved in that the microcomputer in the individual detectors is equipped accordingly, e.g. B. by expanding the control program (firmware).

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Fire Alarms (AREA)
  • Emergency Alarm Devices (AREA)
EP89118339A 1988-10-06 1989-10-03 Procédé pour un fonctionnement économique en énergie de détecteurs de danger dans un dispositif de détection de danger Revoked EP0362798B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89118339T ATE101445T1 (de) 1988-10-06 1989-10-03 Verfahren zum energiesparenden betrieb von gefahrenmeldern in einer gefahrenmeldeanlage.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3834044 1988-10-06
DE3834044 1988-10-06

Publications (3)

Publication Number Publication Date
EP0362798A2 true EP0362798A2 (fr) 1990-04-11
EP0362798A3 EP0362798A3 (fr) 1991-01-16
EP0362798B1 EP0362798B1 (fr) 1994-02-09

Family

ID=6364535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89118339A Revoked EP0362798B1 (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) EP0362798B1 (fr)
AT (1) ATE101445T1 (fr)
DE (1) DE58906937D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0491216A3 (en) * 1990-12-18 1992-12-09 Siemens Aktiengesellschaft Hazard detection system
WO2002039050A1 (fr) * 2000-11-09 2002-05-16 Orica Explosives Technology Pty Limited Capteur de controle de circuits d'allumage electroniques

Family Cites Families (3)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0491216A3 (en) * 1990-12-18 1992-12-09 Siemens Aktiengesellschaft Hazard detection system
WO2002039050A1 (fr) * 2000-11-09 2002-05-16 Orica Explosives Technology Pty Limited Capteur de controle de circuits d'allumage electroniques
US6941869B2 (en) 2000-11-09 2005-09-13 Orica Explosives Technology Pty Ltd Sensor for monitoring electronic detonation circuits

Also Published As

Publication number Publication date
EP0362798B1 (fr) 1994-02-09
EP0362798A3 (fr) 1991-01-16
ATE101445T1 (de) 1994-02-15
DE58906937D1 (de) 1994-03-24

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