EP0100523A1 - Verfahren zur Informationsübertragung über einen einzigen Übertragungskanal und Anwendung dieses Verfahrens insbesondere in Einrichtungen die ein Alarmsystem bilden - Google Patents

Verfahren zur Informationsübertragung über einen einzigen Übertragungskanal und Anwendung dieses Verfahrens insbesondere in Einrichtungen die ein Alarmsystem bilden Download PDF

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Publication number
EP0100523A1
EP0100523A1 EP83107390A EP83107390A EP0100523A1 EP 0100523 A1 EP0100523 A1 EP 0100523A1 EP 83107390 A EP83107390 A EP 83107390A EP 83107390 A EP83107390 A EP 83107390A EP 0100523 A1 EP0100523 A1 EP 0100523A1
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EP
European Patent Office
Prior art keywords
transmitters
information
groups
transmission
emitters
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EP83107390A
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English (en)
French (fr)
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EP0100523B1 (de
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Gilles Marcel Morey
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems

Definitions

  • the present invention relates to a method for transmitting information as well as an application of this method in particular to an alarm system.
  • a single information exchange channel In the fields of transmission or transfer of information, in particular by radio, optical, ultrasonic or carrier current, applied in particular to alarm systems for the protection of goods and people and to automatic systems, comprising transmission means and information reception means, it is particularly advantageous to use a single information exchange channel, the latter being able to be defined as being the use of a single carrier frequency or of a single physical medium for perform the transmission or transfer of information between transmitters and receivers, the information thus exchanged being likely to disturb each other if several transmitters transmit simultaneously on this same channel and consequently they can make the reception of different information difficult or impossible
  • each transmitter includes a means enabling it to determine at any time whether the network is already in use and whether communication is possible. As soon as the network is free, the transmitter in question transmits the information it has to transmit.
  • the transmission or transfer of information capable of being transmitted simultaneously on the same transmission channel consists, in order to differentiate it, either of using different carrier sub-frequencies as in the case of Herzian beams by performing a frequency sharing of the channel used, or by multiplexing the information over time by performing a time sharing of the single channel.
  • the first case leads to the use of expensive and complex modulation, demodulation and filtering systems both in the transmitters and in the receivers and the second case leads to the use of equally complex and costly sampling and multiplexing systems, , as well as the need to synchronize between them the multiplexers and the demultiplexers.
  • the present invention aims precisely to solve, in a simple and economical manner, the main problems posed by the transmission or transfer of information by a single exchange channel when the information is likely to disturb each other when it is transmitted simultaneously, especially in the case where the information to be transmitted is relatively scarce and occurs quite rarely and at random times.
  • the present invention consequently proposes a method for the transmission, on a single exchange channel in particular of the radioelectric or wired type, of information transmitted in the form of signals of the binary or digital type between several transmitters or groups of transmitters and at least a receiver in which each of the transmitters is capable of transmitting, for a limited period and at random times, by successively repeating the information that it has to transmit.
  • the present invention seeks on the one hand to obtain the advantages resulting from the use of a single information exchange channel or of a single frequency of information transmission, which is advantageous because that the number of possible or usable frequencies is limited for technical or legislative reasons, and on the other hand the advantages of a transmission or a transfer of information transmitted in the form of signals of the binary or digital type which, for reasons of reliability of the transmission are preferably repeated.
  • the method according to the present invention consists in prioritizing each of said transmitters or groups of transmitters by assigning to each of them a different total transmission duration and in selecting or taking into account, during the simultaneous reception by said receiver of signals emanating from different or partially or totally overlapping transmitters or groups of transmitters, the information coming from the transmitter with the longest transmission duration.
  • the method according to the present invention may advantageously consist, for each of said transmitters or groups of transmitters, in repeating a different number of times the transmission of the information to be transmitted, the latter being represented by words or successive bits of identical format and duration for each of the transmitters.
  • the method according to the present invention may advantageously consist, for each of said transmitters or groups of transmitters, in repeating the same number of times the transmission of the information to be transmitted, the latter being represented by words or successive bits by assigning, to each of said transmitters or of said groups of transmitters, a different total transmission duration.
  • the hierarchy of the different transmitters among themselves by their different transmission times combined with the repetition of the information to be transmitted is such that it is possible for the receiver to be able to validate the information coming from the transmitter of the highest rank in the event of simultaneous transmission and therefore reception of information from transmitters or groups of transmitters of different ranks. As a result, information from transmitters of lower ranks may be lost or not interpretable.
  • the method according to the present invention can be applied to the prioritization of the devices making up any installation.
  • the devices making up an alarm system for the protection of property and people comprising in particular at least one state detection device formed in particular by position sensors in order to perform a perimeter protection and / or at least one movement detection device in order to detect any movement inside a volume and / or at least one centralization device and / or at least one device signaling device such as a siren or a telephone transmitter and / or at least one control device with a view in particular to controlling the centralization device and / or at least one call device using for example portable and commanding, for example example, directly a signaling device, some of these devices comprising transmission means and others reception means in order to exchange information of the binary or digital type on a single exchange channel.
  • at least one state detection device formed in particular by position sensors in order to perform a perimeter protection and / or at least one movement detection device in order to detect any movement inside a volume and / or at least one centralization device and / or at least one device signaling device such as a siren or a telephone transmitter and / or at least one control device with
  • the information originating from different transmitters cannot cancel each other out in the event of simultaneous transmission.
  • the emission coming from a state detection device should preferably not mask that of a movement detection device, one signaling an attack on the periphery of the premises to be protected and the other signaling an intrusion already characterized and which therefore presents a more urgent or dangerous character for the goods and people to be protected.
  • the transmission of an order to actuate a signaling device emanating for example from the centralization device should preferably prevail over the emission of a detection device again signaling the presence of an intruder already spotted.
  • the transmission from the call for help device which has a certain urgency, must have priority over all the others.
  • the application to an alarm system intended for the protection of a room of the process according to the present invention can advantageously lead to prioritizing at least two of the different transmitting devices of this alarm system, in order growing importance, in the following manner: peripheral detection device outside the space to be protected, NASDAQmétri q ue detection device on the perimetry of the room to be protected, state detecting device or motion within the local to protect, centralization device, control device, call for help device. It may be advantageous to prioritize by area the devices from different geographic areas and / or the devices within each geographic area. Furthermore, the same alarm system or installation does not necessarily include all the devices indicated above and may include more than one of the same type.
  • the alarm system represented and generally identified by the reference 1 comprises a series of detection devices generally identified by the references 2, 3 and 4, a device for centralization or central identified generally by the reference 5, a control device of the central generally identified by the reference 6, a signaling device generally identified by the reference 7 and a device d 'call for portable help generally identified by reference 8.
  • the devices could be each eri greater number or arranged differently.
  • the detection devices 2, 3 and 4 and the control device 6 can transmit respectively by radio links 2a, 3a, 4a and 6a information and / or orders to the central unit 5, the control unit 5 can transmit actuation orders via a radio link 5a to the signaling device 7 and the call for help device can transmit actuation orders via a radio link 8a directly to the signaling device 7.
  • the connections radio frequencies 2a, 3a, 4a, 5a, 6a and 8a take place on a single information exchange channel which is in the example a single carrier frequency.
  • the detection devices 2, 3 and 4, the control unit 5, the control device 6 and the call for help device 8 comprise transmitters 9, 10, 11, 12, 13 and 14 respectively. and, the central 5 and the signaling device 7 include receptors 15 and 16 respectively.
  • the detection devices 2, 3 and 4 can be devices for detecting state or change of state, for example devices for detecting the position or changing the position of closing elements such as windows or doors or devices for detecting movement of these closing elements, or devices for detecting movement within a determined space or volume.
  • the detection devices 2 and 3 are state detection or state change devices and for this purpose comprise state or state change sensors 17 and J8 capable of respectively supply their transmitters 9 and 10 respectively with transmission orders and the detection device 4 is a volumetric protection device comprising for this purpose a motion detection sensor 19 capable of supplying transmission orders to its transmitter 11.
  • the control device 6 is a control device for example of on-off of the central 5 and for this purpose comprises a control member 20 provided for example with a button, a key or a keyboard operable manually to provide transmission instructions to the transmitter 13.
  • the central unit 5 comprises a receiver 15 and a transmitter 12. Between this receiver and this transmitter, the central unit 5 comprises a member 21 for processing information coming from the receiver 15 in order to supply, as the case may be , issuing orders to the issuer 12.
  • the signaling device 7 comprises for example a siren 22 capable of being triggered on the order of the receiver 16.
  • the device for calling for help 8 which in a variant may be of the portable type, comprises a member 23 capable of supplying transmission orders to its transmitter 14 when it is actuated, for example, by a manual button.
  • a transmitter generally identified by the reference 24 and capable of forming the transmitters 9, 10, 11, 12, 13 and 14 of the alarm system 1 shown in the figure 1.
  • This transmitter 24 is designed to transmit information of the binary type contained in eight-bit words as will be seen below.
  • This transmitter 24 includes an input line capable of receiving at a random time an order to send a member 26 formed for example by one of the sensors 17, 18, 19, the processing member 21, or one of the control members 20 and 23 .
  • the order arriving by the input line 25 acts on a flip-flop 27 which unlocks the reset input of a binary counter 28. The latter then starts to count at the frequency of a clock 29.
  • the first two binary output lines 30 and 31 of the binary counter 28 are connected to the inputs of a bit generator 32 and its next three binary output lines 33, 34, 35 are connected to the three inputs of a multiplexer 36 whose output is connected to the bit generator 32 so that the bit generator 33 provides on its output line 37, to a transmitting member 38 connected to an antenna 39 and via a gate 40, the another input is connected to the sixth binary output of the binary counter 28 by line 41, the information to be transmitted displayed to the eight inputs of the multiplexer 36, this information being contained in a programming member 42, formed, in the example shown, by eight switches that can occupy either a closed position or an open position, the value of the eight bits representing this information appearing in series per eight-bit word on the output line 37 of the bit generator 32 to be sent.
  • a programming member 42 formed, in the example shown, by eight switches that can occupy either a closed position or an open position, the value of the eight bits representing this information appearing in series per eight-bit word on the output line 37 of the bit generator
  • the binary counter 28 is capable of generating successively, on the lines 37 of the bit generator 32, several times the word contained in the programming member 42 and representing the information. This number is determined by the choice of one of its outputs 43 by connecting it to the reset input of flip-flop 27 by line 44.
  • the sixth output line 41 of the binary counter 28 is connected to the gate 41 and is used to inhibit the transmission between two words to allow the receiver which will be described later with reference to FIG. 3 to synchronize .
  • the frequency of the clock 29 can be modified by modifying its time constant determined by one of the resistors 45, 46 and 47 and the capacitor 48.
  • Other resistors and other capacitors could be provided.
  • the transmitter 24 makes it possible to transmit information of binary type whose content is determined by the word represented in the programming member 42, to have the information contained in the binary word successively repeated a number of times determined by the choice of one of the outputs 43 of the binary counter 28, and to fix a total duration of transmission by the choice of one of the resistors 45, 46, 47 determining the time constant of the clock 29.
  • receiver 4 9 capable of receiving binary information coming from a transmitter similar to the transmitter 24 shown in FIG. 2, this receiver 4 9 being capable of respectively forming the receivers 15 and 16 of the alarm system 1 represented in FIG. 1.
  • the receiver 49 comprises an antenna 50 connected to a reception member 51 supplying on its output line 52 the binary information received in series.
  • the output line 52 of the reception unit 51 is connected to a bit decoder 53 capable of extracting the information contained in each bit so as to record it and gradually store it in two shift registers 54 and 55 to eight bits connected in series, the output line 52 being moreover connected to a bit synchronization unit 56 whose output is connected to the clock inputs of the bit decoder 53 and of the shift registers 54 and 55.
  • the eight outputs the shift registers 54 and 55 are connected to a word comparator 57 whose order of comparison of the two words it receives from the shift registers 54 and 55 is supplied to it by a word synchronizer 58 activated by the line of outlet 52 of the receiving member 51.
  • the word comparator 57 provides a gate 59 with an order to transfer the eight-bit word contained in the shift register 55 representing the information received and decoded to a processing device 60.
  • This control device 60 can be, in the example, either the processing device 21 or a device for actuating the siren 22.
  • the receiver 49 is particularly suitable for taking into account information contained in a binary word as soon as it has successively received two identical words representing this information.
  • the link 4a between the motion detection device 4 and the central unit 5 must have priority over the links 2a and 3a between the state detection devices 2 and 3 in order to be taken into account.
  • the control unit 5 given that the movement detection device 4 is placed, as we have seen, inside a room and that the state detection devices 2 and 3 are placed, in general , at its perimeter, the motion detection device 4 detecting an intruder already introduced into the room.
  • the detection device status 3 has priority over status detection device 2.
  • the link 5a between the central unit 5 and the signaling device 7 has priority over the links 2a, 3a and 4a since it transmits an actuation order to the siren 22.
  • the devices forming the alarm system 1 are therefore preferably prioritized as follows: state detection device 2, state detection device 3, movement detection device 4, control unit 5, control device 6, and call for help device 8.
  • the transmitter 24 and the receiver 49 are particularly suitable for being able to achieve this hierarchy.
  • the receiver 49 is adapted to take into account information as soon as it has successively received two identical binary words representing this information, and that it can be provided to be able to decode words and bits of duration and / or different formats.
  • the transmitter 24 can transmit a binary word representing information a number of times determined by the choice of one of the outputs 43 of the bipolar counter 28. Then, as the receiver 49 is able to take into account a information insofar as it receives it twice successively, it is necessary that the minimum difference in the number of repetitions of the same words of identical format and duration by two transmitters 24 hierarchically contiguous must be four words so that the receiver can take into account the information of the highest hierarchical transmitter if these two transmitters transmit simultaneously.
  • this difference (n 1 -n o ) in the number of repetitions (n and ni) between two contiguous hierarchical levels must be at least equal to twice the number (k) of successive identical words that the receiver must receive to take into account the information contained in the word, this inequality being n 1 -n o ⁇ 2k.
  • the transmitter 24 is adapted to transmit words of different formats by choosing a particular time constant for the clock 29, for example by choosing one of the resistors 45, 46, 47 and that the receiver 49 can decode words of different format and duration. If we consider that the number of words transmitted is n, that the duration of the words non priority is d o and that the duration of priority words is d j and that the receiver must receive k identical successive words, for example two in the case of receiver 49, for information to be taken into account, the total duration d issuing one word containing the priority information should be at least equal to the total time of issuance o words containing information unscheduled multiplied by the number n of words issued divided by the difference between the member n emitted words and twice the number k of identical successive words, this inequality being d 1 > d o x
  • the detection device 2, the detection device 3, the detection device 4, the control unit 5 and the device for calling for help 8 can be prioritized. sending words of the same format and the same duration and modifying the number of repetitions of the word for each of these devices while the control device 6 can be ranked by choosing a word of different format, so as to be able to discriminate between device to remind everyone else.
  • the transmitter 9 of the detection device 2 repeats a word eight times during 128 milliseconds, which leads to a total transmission time of 1024 milliseconds
  • the transmitter 10 of the detection device 3 repeats the word sixteen times, which leads to a total transmission time of 2048 milliseconds
  • the transmitter 11 of the detection device 4 repeats the word twenty four times, this which leads to a total transmission time of 3,072 milliseconds
  • the transmitter 12 of control panel 5 repeats the word thirty two times, which leads to a total transmission time of 4,096 milliseconds
  • l 'transmitter 14 of the call device using 8 is chosen for security, a number of repetitions of the word much higher to lead to a total transmission time for example greater than thirty seconds.
  • the transmitter 13 of the control device 6 which, as we have seen, must have priority over devices 2, 3, 4 and 5, repeats a word thirty-two times for 256 milliseconds, which leads to a total transmission duration of 8,182 milliseconds, the transmission duration of this word being equal to twice the transmission duration of each word chosen for the transmitters of devices 2, 3, 4 and 5.
  • the receiver 15 of the centralization device 5 comprises, in this example, a single reception member 51 and two decoding assemblies connected after this reception member 51 taking into account the fact that it must be able to decode two words of different duration.
  • the present invention is obviously not limited to the example described above. We can indeed consider prioritizing installation devices other than alarm systems and using in particular a single exchange channel other than radio; in particular of the carrier current, optical, sonic or wired type.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
EP19830107390 1982-08-03 1983-07-27 Verfahren zur Informationsübertragung über einen einzigen Übertragungskanal und Anwendung dieses Verfahrens insbesondere in Einrichtungen die ein Alarmsystem bilden Expired EP0100523B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8213579A FR2531587A1 (fr) 1982-08-03 1982-08-03 Procede pour la transmission d'informations sur un canal d'echanges unique et application de ce procede notamment a des dispositifs formant un systeme d'alarme
FR8213579 1982-08-03

Publications (2)

Publication Number Publication Date
EP0100523A1 true EP0100523A1 (de) 1984-02-15
EP0100523B1 EP0100523B1 (de) 1987-04-08

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EP19830107390 Expired EP0100523B1 (de) 1982-08-03 1983-07-27 Verfahren zur Informationsübertragung über einen einzigen Übertragungskanal und Anwendung dieses Verfahrens insbesondere in Einrichtungen die ein Alarmsystem bilden

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EP (1) EP0100523B1 (de)
DE (1) DE3370915D1 (de)
FR (1) FR2531587A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987003726A1 (fr) * 1985-12-06 1987-06-18 Albert Soblet Systeme d'appel pour interventions coordonnees
EP0446979A1 (de) * 1990-03-16 1991-09-18 Ericsson Radio Systems B.V. Alarmsignalübertragungsanlage mit Wiederholung
EP0833288A3 (de) * 1996-09-30 2000-01-19 Siemens Aktiengesellschaft Verfahren zur Funkübertragung von Messdaten von Meldesensoren und Funk-Gefahrenmeldeanlage
US6876457B2 (en) * 2002-07-23 2005-04-05 Leuze Lumiflex Gmbh & Co., Kg Light grid
FR3016244A1 (fr) * 2014-01-08 2015-07-10 Renault Sa Procede de communication avec un circuit de controle d'une batterie d'accumulateurs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1188034A (fr) * 1957-11-21 1959-09-18 Trt Telecom Radio Electr Moyens d'intercorrélation pour plusieurs stations émettrices d'informations
AU475417B2 (en) * 1973-01-18 1975-05-22 Amalgamated Wireless (Australasia) Limited Improvements in monitoring arrangements
US4020477A (en) * 1975-11-10 1977-04-26 American District Telegraph Company Radio central station alarm system
US4257038A (en) * 1979-02-28 1981-03-17 Notifier Company Coded security system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5752244A (en) * 1980-09-11 1982-03-27 Matsushita Electric Works Ltd Transmission system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1188034A (fr) * 1957-11-21 1959-09-18 Trt Telecom Radio Electr Moyens d'intercorrélation pour plusieurs stations émettrices d'informations
AU475417B2 (en) * 1973-01-18 1975-05-22 Amalgamated Wireless (Australasia) Limited Improvements in monitoring arrangements
US4020477A (en) * 1975-11-10 1977-04-26 American District Telegraph Company Radio central station alarm system
US4257038A (en) * 1979-02-28 1981-03-17 Notifier Company Coded security system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
NATIONAL TELECOMMUNICATIONS CONFERENCE 1980, 30 novembre - 4 décembre 1980, Houston, vol. 2 of 4, pages 37.4.1-37.4.6, New York, USA *
PATENT ABSTRACTS OF JAPAN, vol. 6, no. 123, 8 juillet 1982, page E-117 1001 & JP-A-57 052 244 (MATSUSHITA DENKO K.K.) 27-03-1982 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987003726A1 (fr) * 1985-12-06 1987-06-18 Albert Soblet Systeme d'appel pour interventions coordonnees
EP0446979A1 (de) * 1990-03-16 1991-09-18 Ericsson Radio Systems B.V. Alarmsignalübertragungsanlage mit Wiederholung
US5164704A (en) * 1990-03-16 1992-11-17 Ericsson Radio Systems B.V. System for transmitting alarm signals with a repetition
EP0833288A3 (de) * 1996-09-30 2000-01-19 Siemens Aktiengesellschaft Verfahren zur Funkübertragung von Messdaten von Meldesensoren und Funk-Gefahrenmeldeanlage
US6876457B2 (en) * 2002-07-23 2005-04-05 Leuze Lumiflex Gmbh & Co., Kg Light grid
FR3016244A1 (fr) * 2014-01-08 2015-07-10 Renault Sa Procede de communication avec un circuit de controle d'une batterie d'accumulateurs
WO2015104493A1 (fr) * 2014-01-08 2015-07-16 Renault S.A.S Procede de communication avec un circuit de controle d'une batterie d'accumulateurs

Also Published As

Publication number Publication date
DE3370915D1 (en) 1987-05-14
FR2531587A1 (fr) 1984-02-10
EP0100523B1 (de) 1987-04-08
FR2531587B1 (de) 1985-01-25

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