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WO1980000210A1 - Identification process for remote control operating systems in time sharing communication - Google Patents

Identification process for remote control operating systems in time sharing communication Download PDF

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Publication number
WO1980000210A1
WO1980000210A1 PCT/CH1979/000093 CH7900093W WO8000210A1 WO 1980000210 A1 WO1980000210 A1 WO 1980000210A1 CH 7900093 W CH7900093 W CH 7900093W WO 8000210 A1 WO8000210 A1 WO 8000210A1
Authority
WO
WIPO (PCT)
Prior art keywords
spontaneous
sub
stations
substations
central station
Prior art date
Application number
PCT/CH1979/000093
Other languages
German (de)
French (fr)
Inventor
J Guzmanedery
W Bizer
Original Assignee
Bbc Brown Boveri & Cie
J Guzmanedery
W Bizer
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
Application filed by Bbc Brown Boveri & Cie, J Guzmanedery, W Bizer filed Critical Bbc Brown Boveri & Cie
Publication of WO1980000210A1 publication Critical patent/WO1980000210A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Definitions

  • the invention relates to an identification method in telecontrol systems in community traffic, in which a general request is sent from a central station within a cycle for spontaneous information and a feedback from the substation takes place.
  • the central office calls to all sub-stations whether there is spontaneous information.
  • Spontaneous information is understood to mean messages that must be transmitted spontaneously and immediately according to their meaning. This spontaneous information, which is only very sporadically available, must therefore be identified from the large number of substations.
  • the object of the invention is therefore to promptly and reliably query all substations whether and where there is sptane information. After a general call to all sub-stations and the determination of spontaneous information, there should be a specific query with high priority.
  • the transmission level is briefly switched on and off in succession for all the substations and only the substations with spontaneous data do not respond to this call.
  • the control center evaluates the transient impulses resulting from the short-term switching on and off of the transmission level and specifically queries the sub-stations with the spontaneous data.
  • the rapid recognition of spontaneous information is advantageous in the method according to the invention.
  • pulses instead of telegrams during the transmission, a substantial simplification could be achieved, because the previous bit pattern of the telegrams is converted into a pulse, which is evaluated in a discriminator in the central office.
  • the transmitter of the substation is briefly switched on and off in an advantageous manner.
  • a control unit (not shown) carries out a general query with a request telegram A via a control channel S to substations US1, US2, USJ, US4.bis to USn which are only symbolically indicated. If there is no spontaneous information in the first substation US1, the transmitter (not shown) of this substation reacts with a short oscillation until the transmission level is reached and then switches off again. No spontaneous information is available in the next substation US 2 either, so that the transmitter (not shown) of this substation swings up briefly. Spontaneous information Inf is only available at substation US3. The transmitter of this substation does not vibrate, but remains in the idle position. At the substation US4 there is again no spontaneous information, so that this transmitter oscillates.
  • a sequence of impulses which represent a statement about the presence or absence of spontaneous information in the substations, therefore goes to the monitoring channel to the control center. So, as with the known methods, telegrams do not go from each substation back to the control center, but only short pulses correspond to the response time of the transmitter in the substation. In a receiver, not shown, of the control center, these pulses are converted into digital pulses according to FIG. 1b in a discriminator, not shown, so that there is a clear recognition of the spontaneous information in the transmitter.
  • L-pulses mean no spontaneous information and 0-pulses indicate spontaneous information. The content of this spontaneous information can now be queried in a targeted query to the substations with the spontaneous information.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Selective Calling Equipment (AREA)

Abstract

In remote control operating systems with transmission of data between a central station and a plurality of sub-stations (US1...USn), spontaneous announcements have to be transmitted from these sub-stations, preferably after an interrogation, to the central station. The aim is to obtain a reliable interrogation after a short period of time from all the sub-stations on the presence or spontaneous announcements with the successive and addressed interrogation of the sub-stations having set spontaneous announcements. After the collective call from the central station, a switch on-switch off of all sub-stations of the series and according to the transmission level is achieved within a short time, to which only the sub-stations (US3) having a spontaneous announcement do not react. The central station interpretes the transitional pulses resulting from the switch on-switch on of the transmission level as an addressed interrogation.

Description

Identifikationsverfahren bei Fernwirksystemen im Gemein- schaftsverkehrIdentification procedure for telecontrol systems in community traffic
Die Erfindung bezieht sich auf ein Identifikationsverfahren bei Fernwirksystemen im Gemeinschaftsverkehr, bei dem aus einer Zentrale eine Generalabfrage innerhalb eines Zyklus nach spontanen Informationen gesendet wird und eine Rückmeldung der Unterstation erfolgt.The invention relates to an identification method in telecontrol systems in community traffic, in which a general request is sent from a central station within a cycle for spontaneous information and a feedback from the substation takes place.
Bei Fernwirksystemen müssen in die zu übermittelnden laufenden Prozessinformationen (Meldungen, Messwerte, Zählwerte) von den UnterStationen zur Zentrale kurzfristig Spontanmeldungen gesendet werden. Diese Uebermittlung erfolgt beispielsweise nach einem Aufruftelegramm von der Zentrale, sie kann aber auch durch eine kontinuierliche Abfrage aller Unterstationen erfolgen. Im Gemeinschaftsverkehr sind dabei alle UnterStationen an eine Bus-Leitung angeschlossen, die aus einem Steuerkanal und einem Ueberwachungskanal besteht. Im Steuerkanal werden die UnterStationen aufgerufen und im Ueberwachungskanal geben sie ihre Informationen an die Zentrale (Buch: "Fernwirktechnik", Bendorf, Bizer, Gerner, Müller, Rödig, Schindele, Schmudlach, Wolfgarten, VDI-Ver- lag, 1975, S. 27-29). Zu bestimmten Zeiten erfolgt also von der Zentrale ein Aufruf an alle UnterStationen, ob eine spontane Information vorliegt. Unter spontanen Informationen werden Meldungen ver standen, die entsprechend.ihrer Bedeutung spontan und unmittelbar übertragen werden müssen. Diese spontanen Informationen, die nur sehr sporadisch vorhanden sind, müssen also aus der Vielzahl der Unterstationen identifiziert werden.In the case of telecontrol systems, spontaneous reports must be sent from the sub-stations to the head office in the ongoing process information (messages, measured values, counts) to be transmitted. This transmission takes place, for example, after a call telegram from the head office, but it can also be carried out by continuously polling all substations. In community traffic, all sub-stations are connected to a bus line, which consists of a control channel and a monitoring channel. The sub-stations are called up in the control channel and they give their information to the control center in the monitoring channel (book: "Fernwirktechnik", Bendorf, Bizer, Gerner, Müller, Rödig, Schindele, Schmudlach, Wolfgarten, VDI-Verlag, 1975, p. 27 -29). At certain times, the central office calls to all sub-stations whether there is spontaneous information. Spontaneous information is understood to mean messages that must be transmitted spontaneously and immediately according to their meaning. This spontaneous information, which is only very sporadically available, must therefore be identified from the large number of substations.
Bei der Uebertragung von Informationen im Gemeinschaftsve kehr können sich Telegramme überlappen, was zu Störungen führt. Es muss deshalb dafür gesorgt werden, dass die Telgramme seriell an die Zentrale übertragen werden.When transmitting information in community traffic, telegrams can overlap, which leads to malfunctions. It must therefore be ensured that the telegrams are transmitted to the control center serially.
Es ist bekannt, in einem Zyklus von der Zentrale aus die Unterstationen der Reihe nach oder alle auf einmal abzufragen und auf Antwort zu warten (Zeitstaffelung). Da die angefallenen Informationen nur seriell übertragen werden können, ist dieses Verfahren mit erheblichem Zeitaufwand verbunden. Da in sehr vielen UnterStationen keine spontanen Informationen anfallen, diese Stationen aber trotzdem abgefragt werden, sind die Uebertragungsleitunge für die Dauer der Abfrage blockiert, und dieses Verfahren ist unwirtschaftlich. Es ist auch bekannt, nur einen Teilabschnitt der Unterstationen abzufragen, um so eine Aussa über das Vorhandensein von spontanen Meldungen zu erhalteIt is known to query the substations in sequence or all at once in a cycle from the central station and to wait for a response (time grading). Since the information obtained can only be transmitted serially, this process is time-consuming. Since there is no spontaneous information in a large number of sub-stations, but these stations are nevertheless queried, the transmission lines are blocked for the duration of the query, and this method is uneconomical. It is also known to query only a subsection of the substations in order to obtain a statement about the presence of spontaneous messages
Die Aufgabe der Erfindung besteht deshalb darin, alle Untstationen kurzfristig und sicher abzufragen, ob und wo sptane Informationen vorhanden sind. Es soll also nach einem allgemeinen Aufruf an alle UnterStationen, und Feststellu vorhandener spontaner Informationen, eine gezielte Abfrage mit hoher Priorität erfolgen.The object of the invention is therefore to promptly and reliably query all substations whether and where there is sptane information. After a general call to all sub-stations and the determination of spontaneous information, there should be a specific query with high priority.
Erfindungsgemäss wird dies dadurch erreicht, dass nach dem Aufruf der Zentrale bei allen Unterstationen der Reihe nach der Sendepegel kurzfristig ein- und ausgeschaltet wird und nur die Unterstationen mit spontanen Daten auf diesen Aufruf nicht reagieren. Die Zentrale wertet die durch das kurzfristige Ein- und Ausschalten des Sendepegels entstandenen Einschwingimpulse aus und fragt die UnterStationen mit den spontanen Daten gezielt ab.This is achieved according to the invention in that after the central station has been called up, the transmission level is briefly switched on and off in succession for all the substations and only the substations with spontaneous data do not respond to this call. The control center evaluates the transient impulses resulting from the short-term switching on and off of the transmission level and specifically queries the sub-stations with the spontaneous data.
Vorteilhaft bei dem erfindungsgemässen Verfahren ist die schnelle Erkennung einer spontanen Information. Durch die Verwendung von Impulsen anstelle von Telegrammen bei der Uebertragung konnte, eine wesentliche Vereinfachung erzielt werden, denn das bisherige Bit-Muster der Telegramme wird umgewandelt in einen Impuls, der in einem Diskriminator in der Zentrale ausgewertet wird. Es wird also in vorteilhafter Weise anstelle einer Telegrammübertragung ein kurzfristiges An- und Ausschalten des Senders der Unterstation vorgenommen.The rapid recognition of spontaneous information is advantageous in the method according to the invention. By using pulses instead of telegrams during the transmission, a substantial simplification could be achieved, because the previous bit pattern of the telegrams is converted into a pulse, which is evaluated in a discriminator in the central office. Instead of a telegram transmission, the transmitter of the substation is briefly switched on and off in an advantageous manner.
Ein Ausführungsbeispiel der erfindungsgemässen Verfahrens wird nachstehend anhand der Figuren la und lb näher erläutert. Gemäss Fig. la wird von einer nicht gezeigten Zentrale eine Generalabfrage mit einem Aufruf-Telegramm A über einen Steuerkanal S an nur symbolisch angedeutete Unterstationen US1, US2, USJ, US4.bis USn vorgenommen. Wenn keine spontane Information in der ersten Unterstation US1 vorhanden ist, reagiert der nicht dargestellte Sender dieser Unterstation mit einem kurzen Anschwingen, bis der Sendepegel erreicht ist, und schaltet dann wieder ab. Auch in der nächsten Unterstation US 2 ist keine spontane Information vorhanden, so dass auch der nicht dargestellte Sender dieser Unterstation kurz anschwingt. Erst bei der Unterstation US3 ist eine spontane Information Inf vorhanden. Der Sender dieser Unterstation schwingt nicht an, sondern bleibt in Ruhestellung Bei der Unterstation US4 ist wieder keine spontane Information vorhanden, so dass dieser Sender anschwingt.An exemplary embodiment of the method according to the invention is explained in more detail below with reference to FIGS. 1a and 1b. According to FIG. 1 a, a control unit (not shown) carries out a general query with a request telegram A via a control channel S to substations US1, US2, USJ, US4.bis to USn which are only symbolically indicated. If there is no spontaneous information in the first substation US1, the transmitter (not shown) of this substation reacts with a short oscillation until the transmission level is reached and then switches off again. No spontaneous information is available in the next substation US 2 either, so that the transmitter (not shown) of this substation swings up briefly. Spontaneous information Inf is only available at substation US3. The transmitter of this substation does not vibrate, but remains in the idle position. At the substation US4 there is again no spontaneous information, so that this transmitter oscillates.
Auf den Ueberwachungskanal an die Zentrale geht also eine Folge von Impulsen, die eine Aussage darstellen über das Vorhandensein oder -Tichtvorhandensein spontaner Informationen in den Unterstationen. Es gehen also nicht, wie bei den bekannten Verfahren, Telegramme von jeder Unterstation zu rück zur Zentrale, sondern nur kurze Impulse , entsprechen der Anschwingzeit des Senders in der Unterstation. In einem nicht dargestellten Empfänger der Zentrale werden diese Impulse in einem nicht dargestellten Diskriminator in digitale Impulse gemäss Fig. lb umgesetzt, so dass im Sender eine eindeutige Erkennung über die spontanen Informationen besteht. L-Impulse bedeuten gemäss der Zeichnung keine spontanen Informationen und 0-Impulse zeigen spontane Informationen an. In einer gezielten Abfrage an die Unterstationen mit den spontanen Informationen kann jetzt der Inhalt dieser spontanen Informationen abgefragt werden.A sequence of impulses, which represent a statement about the presence or absence of spontaneous information in the substations, therefore goes to the monitoring channel to the control center. So, as with the known methods, telegrams do not go from each substation back to the control center, but only short pulses correspond to the response time of the transmitter in the substation. In a receiver, not shown, of the control center, these pulses are converted into digital pulses according to FIG. 1b in a discriminator, not shown, so that there is a clear recognition of the spontaneous information in the transmitter. According to the drawing, L-pulses mean no spontaneous information and 0-pulses indicate spontaneous information. The content of this spontaneous information can now be queried in a targeted query to the substations with the spontaneous information.
Durch die Reduzierung der Telegrammübertragung nur auf Einschwingzeiten des betreffenden Senders konnte eine erhebliche Zeitersparnis erzielt werden. Denn die Zeitdauer eines bisherigen Telegrammes beträgt 250 ms, während das erfindungs gemässe Anschwingen nur noch ca. 30 ms ausmacht. Das erfindungsgemässe Verfahren gestattet sogar in vorteilhafter Weise eine Erkennung ausgefallener Unterstationen. Da diese UnterStationen bei der Abfrage nicht mehr antworten, registriert die Zentrale entweder spontane Informationen oder Störung. Eine erneute gezielte Abfrage bestätigt dann den Störungsfall. By reducing the telegram transmission only to settling times of the transmitter concerned, considerable time savings could be achieved. Because the duration of a previous telegram is 250 ms, while the oscillation according to the invention is only about 30 ms. The method according to the invention even advantageously allows the detection of failed substations. Since these substations no longer respond when queried, the control center either registers spontaneous information or a fault. Another targeted query then confirms the fault.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Identifikationsverfahren bei Fernwirksystemen im Gemein schaftsverkehr, bei dem aus einer Zentrale eine Geheral abfrage innerhalb eines Zyklus nach spontanen Informationen gesendet wird und eine Rückmeldung der Untersta tion erfolgt, dadurch gekennzeichnet, dass nach dem Auf ruf der Zentrale bei allen Unterstationen der Reihe nach der Sendepegel kurzfristig ein- und ausgeschaltet.wird und nur die UnterStationen mit spontanen Daten auf diesen Aufruf nicht reagieren.1.Identification procedure for telecontrol systems in community traffic, in which a central request is sent from a central office within a cycle for spontaneous information and feedback from the substation is provided, characterized in that after the central office has been called, all the substations in turn Transmitting level is switched on and off for a short time and only the substations with spontaneous data will not respond to this call.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Zentrale, die durch das kurzfristige Ein- und Ausschalten des Sendepegels entstandenen Einschwingimpulse auswertet und die Unterzentralen mit den spontanen Daten gezielt abfragt. 2. The method according to claim 1, characterized in that the control center evaluates the transient pulses generated by the short-term switching on and off of the transmission level and specifically queries the sub-control centers with the spontaneous data.
PCT/CH1979/000093 1978-07-08 1979-06-21 Identification process for remote control operating systems in time sharing communication WO1980000210A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2830097 1978-07-08
DE19782830097 DE2830097A1 (en) 1978-07-08 1978-07-08 IDENTIFICATION PROCEDURE FOR COMMUNITY TELECOMMUNICATION SYSTEMS

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WO1980000210A1 true WO1980000210A1 (en) 1980-02-07

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2908629C2 (en) * 1979-03-06 1985-10-17 Brown, Boveri & Cie Ag, 6800 Mannheim Call procedure for telecontrol systems in joint traffic

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH491574A (en) * 1969-06-20 1970-05-31 Landis & Gyr Ag Digital telecontrol system working in call mode with a central station and several sub-stations
US3652993A (en) * 1970-07-24 1972-03-28 Bell Telephone Labor Inc Rapid polling method for digital communications network
DE2536161A1 (en) * 1975-08-13 1977-02-17 Siemens Ag Telemetry control system for master satellite stations - has outstation with own timing generator to control response sequence (NL150277)
DE2740620A1 (en) * 1976-09-14 1978-03-16 Honeywell Inc ADDRESSING PROCEDURE AND EQUIPMENT FOR CARRYING OUT THE PROCEDURE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH491574A (en) * 1969-06-20 1970-05-31 Landis & Gyr Ag Digital telecontrol system working in call mode with a central station and several sub-stations
US3652993A (en) * 1970-07-24 1972-03-28 Bell Telephone Labor Inc Rapid polling method for digital communications network
DE2536161A1 (en) * 1975-08-13 1977-02-17 Siemens Ag Telemetry control system for master satellite stations - has outstation with own timing generator to control response sequence (NL150277)
DE2740620A1 (en) * 1976-09-14 1978-03-16 Honeywell Inc ADDRESSING PROCEDURE AND EQUIPMENT FOR CARRYING OUT THE PROCEDURE

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Brown Boveri Mitteilungen, Band 54, No. 4, April 1967, Baden, Funk "Datenaustausch- und Steuer-Anlage (DASA)", Seiten 206 bis 210 siehe Seite 207, rechte Spalte, Zeile 3 bis Seite 208, linke Spalte, Zeile 4; Figuren 2 und 3. *

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EP0016032A1 (en) 1980-10-01
DE2830097A1 (en) 1980-01-17

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