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EP0317428A1 - Système de télécommande et de télésurveillance en temps partagé - Google Patents

Système de télécommande et de télésurveillance en temps partagé Download PDF

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Publication number
EP0317428A1
EP0317428A1 EP88402875A EP88402875A EP0317428A1 EP 0317428 A1 EP0317428 A1 EP 0317428A1 EP 88402875 A EP88402875 A EP 88402875A EP 88402875 A EP88402875 A EP 88402875A EP 0317428 A1 EP0317428 A1 EP 0317428A1
Authority
EP
European Patent Office
Prior art keywords
wire line
line
counter
oscillator
response signal
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.)
Withdrawn
Application number
EP88402875A
Other languages
German (de)
English (en)
French (fr)
Inventor
Alain Laborderie
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0317428A1 publication Critical patent/EP0317428A1/fr
Withdrawn legal-status Critical Current

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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
    • G08B26/004—Alarm systems in which substations are interrogated in succession by a central station with common interrogation of substations
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C15/00—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path
    • G08C15/06—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path successively, i.e. using time division
    • G08C15/12—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path successively, i.e. using time division the signals being represented by pulse characteristics in transmission link

Definitions

  • the present invention relates to a time-sharing remote control and remote monitoring system.
  • the present invention aims to provide such a system.
  • the invention relates to a time-sharing remote control and remote monitoring system, characterized in that it comprises a two-wire line, for example a pair of telephone wires, a central unit connected to one end of said line, and a plurality of functional units connected in parallel on said line, the central unit being arranged to transmit and receive signals on the two-wire line, and each functional unit comprising coding means for assigning it a code number , a first oscillator, a counter arranged to count the pulses from said first oscillator, resetting of said counter, actuation means, means for transmitting a control signal present on the two-wire line to said actuation means only during a first predetermined duration starting at the moment when the content of the counter reaches the value of the code number, means for detecting a state of the said functional unit, means for generating a response signal depending on said state, and means for transmitting said response signal on the two-wire line for a second predetermined duration starting a predetermined time after said instant when the content of the counter has
  • each functional unit comprises means for its electrical supply from said two-wire line, the resetting of the counter can in particular be activated by powering up this line.
  • the resets start the oscillator counters of each functional unit.
  • the actuation means are put on hold until the content of the counter reaches the value of the serial number of this particular unit.
  • a "window” opens, so that if a control signal from the central unit is present on the two-wire line, this signal will activate the actuation means.
  • the actuating means will remain in the state they were previously.
  • Each functional unit having a different code number it follows that their respective windows are shifted in time. It therefore suffices to cause the central unit to transmit its control signals on the two-wire line in the windows corresponding to the functional units whose actuation means are to be activated.
  • the second phase begins after the aforementioned predetermined time has elapsed, which of course cannot be less than the cumulative time of the windows of all the functional units.
  • the different functional units successively transmit their response signals on the two-wire line in the same order as that of the first phase.
  • This response signal can either translate only the state of the actuation means of the functional unit considered, or be generated from a local sensor of any physical magnitude. It is in particular possible, with the system according to the invention, to have several sensors for each functional unit, the sensor having to transmit its information during the second phase being chosen by the control signal emitted by the central unit during the first phase.
  • the second phase can either be interrupted as soon as all the functional units have sent their response signal, or continue cyclically with a period equal to said predetermined time.
  • the different functional units continue to periodically send a response signal, until a new reset occurs, caused for example by an interruption of the supply on the two-wire line.
  • the actuation means comprise a bistable relay, so that the functional units have their actuation means which, during such a cut, maintain the same state until the first phase of a new cycle is initiated by re-energizing the line, and a control signal is sent to them during this first phase.
  • the aforementioned means for transmitting the response signal on the two-wire line are controlled by said first oscillator, and a second oscillator can be provided to generate the response signal, the frequency of this second oscillator being modulated according to said state.
  • a central unit 1 is connected by a two-wire line 2 such as a telephone line, to a plurality of functional units 3.
  • Each functional unit is supplied by a voltage regulator 4 connected to line 2.
  • a reset circuit 5 is connected to the output of regulator 4, and the output of circuit 5 is arranged to trigger a counter-oscillator 6 controlled by a quartz 7.
  • a divider circuit 8 splits the frequency generated by the oscillator 6.
  • a programmer 9 makes it possible to assign to each functional unit 3 a code number which is compared to the counter of the divider circuit 8 in a comparator 10, 11.
  • a comparator 10 When the two inputs of the comparator 10, 11 are equal, it validates a gate 12 of so as to transmit to a bistable relay 13 a signal possibly present on line 2 via a capacitor 14 and a door 15, the control of which will be explained in detail below.
  • the bistable relay 13 comprises on the one hand a working contact 16 making it possible to actuate any desired device, and on the other hand a measuring contact 17 making it possible to return a measurement signal to the central unit 1 via line 2.
  • the circuit of contact 17 is connected to an oscillator 18 so as to vary the frequency of this oscillator, depending on whether this contact is open or closed.
  • the output of the oscillator 18 is connected to a door 19 controlled by a monostable circuit 20 itself activated by the reset signal.
  • gate 19 is connected to another gate 21 controlled by the signal from comparator 10, 11, and the output of which is connected to line 2 via an amplifier 22.
  • FIG. 2 represents on the one hand the signals present on line 2 and on the other hand, by way of example, the operation of the functional units 3 having the code number 1, 2 and i.
  • This line being energized at instant zero, the resets to zero 5 launch the oscillators 6 after a duration of 10 ms.
  • the unit 3 whose code number programmed on the programmer 9 is equal to 1 has the two inputs of its comparator 10, 11 equal, so that at the output of this comparator appears a slot 30 opening the door 12. No frequency being present on line 2 during the opening time of this door, the bistable relay 13 keeps the same value 31.
  • This first phase of the operation of the system according to the invention therefore lasts 650 ms, namely 10 ms of reset and 640 ms for the central unit 1 to review all the units 3 by switching their relays or not bistable 13 according to a predetermined sequence.
  • the monostable 20 triggered by the reset to zero 5, having a duration of 640 ms, it blocks during this first phase the gate 19 so that no signal coming from the oscillator 18 can be transmitted on the line 2.
  • the monostable 20 blocks the door 15 so that no more signal can be transmitted to the bistable relay 13 during the second operating phase.
  • This second phase begins, in this case 650 ms after the start of the first phase, so that each functional unit has a transmission duration of 10 ms offset by 640 ms compared to its reception duration.
  • the monostable 20, set at 640 ms opens the door 19. Furthermore, the output of the comparator 10, 11 opens the door 21 in the same way as it opened the door. 12 during the first phase.
  • the central unit 1 receives from line 2 first of all a first frequency 41 indicating that the relay 13 of the functional unit 3 of rank 1 is open, then a modified frequency 42 indicating that the relay 13 of the functional unit 3 of rank 2 is closed, and in general a modified frequency 43 indicating that the relay 13 of the functional unit 3 of rank i is closed.
  • the frequency of the oscillator 18 is modified in all or nothing as a function of the opening or closing state of the relay 13, but this frequency could of course be modulated as a function of the state a sensor arranged in the circuit of contact 17.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Selective Calling Equipment (AREA)
EP88402875A 1987-11-17 1988-11-16 Système de télécommande et de télésurveillance en temps partagé Withdrawn EP0317428A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8715848 1987-11-17
FR8715848A FR2623316B1 (fr) 1987-11-17 1987-11-17 Systeme de telecommande et de telesurveillance en temps partage

Publications (1)

Publication Number Publication Date
EP0317428A1 true EP0317428A1 (fr) 1989-05-24

Family

ID=9356862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88402875A Withdrawn EP0317428A1 (fr) 1987-11-17 1988-11-16 Système de télécommande et de télésurveillance en temps partagé

Country Status (7)

Country Link
EP (1) EP0317428A1 (pt)
JP (1) JPH02111196A (pt)
DK (1) DK640288A (pt)
FI (1) FI885317L (pt)
FR (1) FR2623316B1 (pt)
NO (1) NO885111L (pt)
PT (1) PT89013A (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772170A1 (fr) * 1997-12-08 1999-06-11 Legrand Sa Procede de controle centralise a distance d'une pluralite de blocs d'eclairage de securite et installation d'eclairage de secours mettant en oeuvre le procede

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1507609A (en) * 1976-03-19 1978-04-19 Canadian Rgl Electronics Electrical data collecting device
US4156112A (en) * 1977-12-07 1979-05-22 Control Junctions, Inc. Control system using time division multiplexing
GB2075232A (en) * 1978-04-06 1981-11-11 Mallinckrodt Inc Sensor monitor system
EP0055688A1 (de) * 1980-12-23 1982-07-07 Siemens Aktiengesellschaft Anordnung zur Signalübertragung nach dem Zeitmultiplex-System

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1507609A (en) * 1976-03-19 1978-04-19 Canadian Rgl Electronics Electrical data collecting device
US4156112A (en) * 1977-12-07 1979-05-22 Control Junctions, Inc. Control system using time division multiplexing
GB2075232A (en) * 1978-04-06 1981-11-11 Mallinckrodt Inc Sensor monitor system
EP0055688A1 (de) * 1980-12-23 1982-07-07 Siemens Aktiengesellschaft Anordnung zur Signalübertragung nach dem Zeitmultiplex-System

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772170A1 (fr) * 1997-12-08 1999-06-11 Legrand Sa Procede de controle centralise a distance d'une pluralite de blocs d'eclairage de securite et installation d'eclairage de secours mettant en oeuvre le procede
EP0928055A1 (fr) * 1997-12-08 1999-07-07 Legrand Procédé de contrÔle centralisé à distance d'une pluralité de blocs d'éclairage de sécurité et installation d'éclairage de secours mettant en oeuvre le procédé

Also Published As

Publication number Publication date
DK640288A (da) 1989-05-18
FR2623316A1 (fr) 1989-05-19
PT89013A (pt) 1989-09-14
DK640288D0 (da) 1988-11-16
NO885111D0 (no) 1988-11-16
NO885111L (no) 1989-05-18
FR2623316B1 (fr) 1990-03-30
FI885317L (fi) 1989-05-18
FI885317A0 (fi) 1988-11-16
JPH02111196A (ja) 1990-04-24

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