EP0100523A1 - Method for information transmission on a single communication channel, and application of this method, particularly in devices constituting an alarm system - Google Patents

Method for information transmission on a single communication channel, and application of this method, particularly in devices constituting an alarm system 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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Prior art keywords
transmitters
information
groups
transmission
emitters
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EP83107390A
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German (de)
French (fr)
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EP0100523B1 (en
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Gilles Marcel Morey
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR 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.

Abstract

1. Process for transmitting and ranking, in a single exchange channel, particularly of the radioelectric or wired type, information transmitted in the form of signals of the binary or digital type between several emitters or groups of emitters and at least one receiver, in which each of the emitters is capable of emitting, for a limited period and at random times, repeating in succession the information which it has to transmit, which process is characterized in that it consists in ranking each of the said emitters or groups of emitters by allotting to each of them a different total emission period while repeating a different number of times the emission of the information represented by successive words or bits of a format or a duration which is identical for all the emitters, and in selecting or taking into account, during the reception by the said receiver of signals issuing from the different emitters or groups of emitters and partially or completely overlapping each other, the information issuing from the emitter whose emission period is the longest.

Description

La présente invention concerne un procédé pour la transmission d'informations ainsi qu'une application de ce procédé notamment à un système d'alarme.The present invention relates to a method for transmitting information as well as an application of this method in particular to an alarm system.

Dans les domaines de la transmission ou du transfert d'informations notamment par voie radioélectrique, optique, ultrasonore ou à courant porteur, appliqués notamment aux systèmes d'alarmes pour la protection des biens et des personnes et aux automatismes, comprenant des moyens d'émission et des moyens de réception d'informations, il est particulièrement avantageux d'utiliser un canal d'échanges d'informations unique, ce dernier pouvant se définir comme étant l'utilisation d'une seule fréquence porteuse ou d'un support physique unique pour effectuer la transmission ou le transfert des informations entre émetteurs et récepteurs, les informations ainsi échangées étant susceptibles de se perturber mutuellement si plusieurs émetteurs émettent simultanément sur ce même canal et en conséquence elles peuvent rendre la réception de différentes informations difficile ou impossibleIn 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

On connaît des systèmes dans lesquels les différents élements communiquent entre eux par une boucle unique de transmission ou par un réseau. Dans ces sytèmes, chaque émetteur comprend un moyen lui permettant de déterminer à tout instant si le réseau est déjà utilisé et si la communication est possible. Dès que le réseau est libre, l'émetteur en question transmet les informations qu'il a à émettre.Systems are known in which the various elements communicate with each other by a single transmission loop or by a network. In these systems, 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.

Dans d'autres cas connus, la transmission ou le transfert d'informations susceptibles d'être émises simultanément sur un même canal de transmission consiste, afin de les différencier, soit à utiliser des sous-fréquences porteuses différentes comme dans le cas des faisceaux Herziens en réalisant un partage fréquentiel du canal utilisé, soit à multiplexer les informations dans le temps en effectuant un partage temporel du canal unique. Le premier cas conduit à utiliser des systèmes de modulation, de démodulation, et de filtrage onéreux et complexes tant dans les émetteurs que dans les récepteurs et le deuxième cas conduit à l'utilisation de systèmes d'échantillonage et de multiplexage également complexes et coûteux ,, ainsi qu'à la nécessité de synchroniser entre eux les multiplexeurs et les démultiplexeurs.In other known cases, 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.

Dans les systèmes d'alarme actuellement connus et utilisant un canal d'échanges d'informations unique, on considère comme suffisament improbable le cas où deux émetteurs, pour lesquels on choisit en général un temps d'émission très court, émettraient en même temps et on réalise par ailleurs les liaisons les plus importantes, par exemple entre la centrale et les organes de signalisation tels que des sirènes, par fils afin d'éviter toute interférence.In currently known alarm systems and using a single information exchange channel, it is considered sufficiently unlikely that two transmitters, for which a very short transmission time is generally chosen, would transmit at the same time and the most important connections are also made, for example between the central unit and the signaling devices such as sirens, by wires in order to avoid any interference.

Il s'en suit que l'état de la technique ne fournit aucune solution simple et peu onéreuse aux problèmes posés par la transmission ou le transfert d'informations par un canal d'échanges d'informations unique.It follows that the state of the art provides no simple and inexpensive solution to the problems posed by the transmission or transfer of information by a single information exchange channel.

La présente invention vise justement à résoudre, de façon simple et économique, les principaux problèmes posés par la transmission ou le transfert d'informations par un canal d'échanges unique quand les informations sont susceptibles de se perturber mutuellement lorsqu'elles sont émises simultanément, notamment dans le cas où les informations à transmettre sont relativement peu nombreuses et interviennent assez rarement et à des moments aléatoires.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.

La présente invention propose en conséquence un procédé pour la transmission, sur un canal d'échanges unique notamment du type radioélectrique ou filaire, d'informations transmises sous forme de signaux du type binaire ou numérique entre plusieurs émetteurs ou groupes d'émetteurs et au moins un récepteur dans lequel chacun des émetteurs est susceptible d'émettre, pendant une durée limitée et à des moments aléatoires, en répétant successivement l'information qu'il a à transmettre.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.

Il apparaît donc que la présente invention cherche à retirer d'une part les avantages résultant de l'utilisation d'un canal d'échanges d'informations unique ou d'une seule fréquence de transmission d'informations, ce qui est intéressant du fait que le nombre de fréquences possibles ou utilisables est limité pour des raisons techniques ou législatives, et d'autre part les avantages d'une transmission ou d'un transfert d'informations transmises sous la forme de signaux du type binaire ou numérique qui, pour des raisons de fiabilité de la transmission, sont de préférence répétées.It therefore appears that 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.

Pour résoudre le problème posé par la transmission d'informations susceptibles de se nerturber mutuellement, le procédé selon la présente invention consiste à hiérarchiser chacun desdits émetteurs ou groupes d'émetteurs en affectant à chacun d'eux une durée totale d'émission différente et à sélectionner ou prendre en compte, lors de la réception simultanée par ledit récepteur de signaux émanant d'émetteurs ou de groupes d'émetteurs différents et se recouvrant partiellement ou totalement, l'information émanant de l'émetteur dont la durée d'émission est la plus longue.To solve the problem posed by the transmission of information likely to annoy each other, 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.

Dans une variante, le procédé selon la présente invention peut avantageusement consister, pour chacun desdits émetteurs ou groupes d'émetteurs, à répéter un nombre différent de fois l'émission de l'information è transmettre, celle-ci étant représentée par des mots ou bits successifs de format et de durée identiques pour chacun des émetteurs.In a variant, 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.

Dans une autre variante, le procédé selon la présente invention peut avantageusement consister, pour chacun desdits émetteurs ou groupes d'émetteurs, à répéter le même nombre de fois l'émission de l'information à transmettre, celle-ci étant représentée par des mots ou bits successifs en affectant, à chacun desdits émetteurs ou desdits groupes d'émetteurs, une durée totale d'émission différente.In another variant, 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.

La hiérarchisation des différents émetteurs entre eux par leur temps d'émission différents combinés à la répétition de l'information à transmettre est telle qu'il est possible pour le récepteur de pouvoir valider l'information issue de l'émetteur de rang le plus élevé en cas d'émission et donc de réception simultanées d'informations issues d'émetteurs ou de groupes d'émetteurs de rangs différents. De ce fait les informations issues des émetteurs de rangs inférieurs peuvent être perdues ou non interprétables.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.

Le procédé selon la présente invention peut être appliqué à la hiérarchisation des dispositifs composant toute installation.The method according to the present invention can be applied to the prioritization of the devices making up any installation.

Il trouve cependant une application particulièrement intéressante pour la hiérarchisation des dispositifs composant un système d'alarme pour la protection des biens et des personnes et comprenant notamment au moins un dispositif de détection d'état formé notamment par des capteurs de position en vue de réaliser une protection périmétrique et/ou au moins un dispositif de détection de mouvement en vue de détecter tout déplacement à l'intérieur d'un volume et/ou au moins un dispositif de centralisation et/ou au moins un dispositif de signalisation comme par exemple une sirène ou un transmetteur téléphonique et/ou au moins un dispositif de commande en vue notamment de commander le dispositif de centralisation et/ou au moins un dispositif d'appel à l'aide par exemple portatif et commandant, par exemple, directement un dispositif de signalisation, dont certains de ces dispositifs comprennent des moyens d'émission et d'autres des moyens de réception en vue d'échanger des informations du type binaire ou numérique sur un canal d'échanges unique.However, it finds a particularly interesting application for the prioritization of the devices making up an alarm system for the protection of property and people and 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.

En effet, dans un système d'alarme où l'on cherche à obtenir une sécurité de déclenchement la plus grande possible, il est particulièrement avantageux que les informations provenant de différents émetteurs ne puissent pas s'annuler mutuellement en cas d'émission simultanée. Par exemple, l'émission provenant d'un dispositif de détection d'état ne doit de préférence pas masquer celle d'un dispositif de détection de mouvement, l'une signalant une attaque sur la périphérie des locaux à protéger et l'autre signalant une intrusion déjà caractérisée et qui présente de ce fait un caractère plus urgent ou dangereux pour les biens et les personnes à protéger. De même, l'émission d'un ordre d'actionnement d'un dispositif de signalisation émanant par exemple du dispositif de centralisation doit de préférence prévaloir sur l'émission d'un dispositif de détection signalant à nouveau la présence d'un intrus déjà repéré. De même, l'émission émanant du dispositif d'appel à l'aide qui présente un caractère d'urgence certain doit être prioritaire sur toutes les autres.Indeed, in an alarm system where it is sought to obtain the greatest possible trigger security, it is particularly advantageous that the information originating from different transmitters cannot cancel each other out in the event of simultaneous transmission. For example, 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. Likewise, 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. Likewise, the transmission from the call for help device, which has a certain urgency, must have priority over all the others.

Il s'en suit que l'application à un système d'alarme destiné à la protection d'un local du procédé selon la présente invention peut avantageusement conduire à hiérarchiser au moins deux des différents dispositifs émetteurs de ce système d'alarme, par ordre croissant d'importance, de la manière suivante : dispositif de détection périphérique en dehors du local à protéger, dispositif de détection périmétrique sur la périmétrie du local à protéger, dispositif de détection d'état ou de mouvement à l'intérieur du local à protéger, dispositif de centralisation, dispositif de commande, dispositif d'appel à l'aide. Il peut être intéressant de hiérarchiser par zones les dispositifs de zones géographiques différentes et/ou les dispositif à l'intérieur de chaque zone géographique. Par ailleurs, un même système d'alarme ou installation n'inclut pas forcément tous les dispositifs indiqués ci-dessus et peut en inclure plusieurs du même type.It follows that 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, périmétri 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.

La présente invention sera mieux comprise à l'étude d'un système d'alarme dont les différents dispositifs le composant communiquent entre eux par voie radioélectrique et sur un canal d'échanges d'informations unique, c'est à dire sur une fréquence unique, ce système d'alarme étant décrit à titre d'exemple non limitatif et illustré schématiquement par le dessin sur lequel :

  • - la figure 1 représente un schéma de l'installation ;
  • - la figure 2 représente un émetteur particulier prévu pour cette installation ;
  • - et la figure 3 représente un récepteur particulier prévu pour cette installation.
The present invention will be better understood from the study of an alarm system in which the various devices composing it communicate with each other by radio and on a single information exchange channel, that is to say on a single frequency. , this alarm system being described by way of nonlimiting example and illustrated diagrammatically by the drawing in which:
  • - Figure 1 shows a diagram of the installation;
  • - Figure 2 shows a particular transmitter provided for this installation;
  • - And Figure 3 shows a particular receiver provided for this installation.

On peut voir sur la figure 1 que le système d'alarme représenté et repéré d'une manière générale par la référence 1 comprend une série de dispositifs de détection repérés d'une manière générale par les références 2, 3 et 4, un dispositif de centralisation ou centrale repéré d'une manière générale par la référence 5, un dispositif de commande de la centrale repéré d'une manière générale par la référence 6, un dispositif de signalisation repéré d'une manière générale par la référence 7 et un dispositif d'appel à l'aide portatif repéré d'une manière générale par la réfé7 rence 8. Dans une installation plus complexe, les dispositifs pourraient être chacun eri plus grand-nombre ou agencés différemment.It can be seen in FIG. 1 that 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. In a more complex installation, the devices could be each eri greater number or arranged differently.

Dans le système d'alarme 1, les dispositifs de détection 2, 3 et 4 et le dispositif de commande 6 peuvent transmettre respectivement par des liaisons radioélectriques 2a, 3a, 4a et 6a des informations et/ou des ordres à la centrale 5, la centrale 5 peut transmettre par une liaison radioélectrique 5a des ordres d'actionnement au dispositif de signalisation 7 et le dispositif d'appel à l'aide peut transmettre par une liaison radioélectrique 8a des ordres d'actionnement directement au dispositif de signalisation 7. Les liaisons radioélectriques 2a, 3a, 4a, 5a, 6a et 8a s'effectuent sur un canal d'échanges d'informations unique qui est dans l'exemple une fréquence porteuse unique.In the alarm system 1, 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.

5 Dans ce but, les dispositifs de détection 2, 3 et 4, la centrale 5, le dispositif de commande 6 et le dispositif d'appel à l'aide 8 comprennent respectivement des émetteurs 9, 10, 11, 12, 13 et 14 et, la centrale 5 et le dispositif de signalisation 7 comprennent-respectivement des récepteurs 15 et 16. 5 For this purpose, 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.

Les dispositifs de détection 2, 3 et 4 peuvent être des dispositifs de détection d'état ou de changement d'état, par exemple des dispositifs de détection de position ou de changement de position d'éléments de fermeture tels que des fenêtres ou des portes ou des dispositifs de détection de mouvement de ces éléments de fermeture, ou des dispositifs de détection de mouvement à l'intérieur d'un espace ou d'un volume déterminé. Dans un exemple, on considère que les dispositifs de détection 2 et 3 sont des dispositifs de détection d'état ou de changement d'état et comprennent à cet effet respectivement des capteurs d'état ou de changement d'état 17 et J8 susceptibles de fournir respectivement à leurs émetteurs 9 et 10 des ordres d'émission et que le dispositif de détection 4 est un dispositif de protection volumétriquecomprenant à cet effet un capteur de détection de mouvement 19 susceptible de fournir des ordres d'émission à son émetteur 11.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. In one example, it is considered that 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.

Le dispositif de commande 6 est un dispositif de commande par exemple de marche-arrêt de la centrale 5 et comprend à cet effet un organe de commande 20 muni par exemple d'un bouton, d'une.clé ou d'un clavier manoeuvrables manuellement en vue de fournir des instructions d'émission à l'émetteur 13.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.

Comme on l'a vu, la centrale 5 comprend un récepteur 15 et un émetteur 12. Entre ce récepteur et cet émetteur, la centrale 5 comprend un organe 21 de traitement de l'information provenant du récepteur 15 afin de fournir, selon le cas, des ordres d'émission à l'émetteur 12.As we have seen, 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.

Outre son récepteur-16, le dispositif de signalisation 7 comprend par exemple une sirène 22 susceptible d'être déclenchée sur ordre du récepteur 16.In addition to its receiver-16, the signaling device 7 comprises for example a siren 22 capable of being triggered on the order of the receiver 16.

Le dispositif d'appel à l'aide 8, qui dans une variante peut être du type portatif, comprend un organe 23 susceptible de fournir des ordres d'émission à son émetteur 14 quand il est actionné par exemple par un bouton manuel.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.

En référence à la figure 2, on va maintenant décrire un émetteur repéré d'une manière générale par la référence 24 et susceptible de former les émetteurs 9, 10, 11, 12, 13 et 14 du système d'alarme 1 représenté sur la figure 1. Cet émetteur 24 est conçu pour -émettre une information du type binaire contenue dans des mots de huit bits comme on le verra plus loin. yReferring to Figure 2, we will now describe 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. y

Cet émetteur 24 comprend une ligne d'entrée

Figure imgb0001
susceptible de recevoir à un moment aléatoire un ordre d'émission i'un organe 26 formé par exemple par l'un des capteurs 17, 18, 19, l'organe de traitement 21, ou l'un des organes de commande 20 et 23.This transmitter 24 includes an input line
Figure imgb0001
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 .

L'ordre arrivant par la ligne d'entrée 25 agit sur une bascule 27 qui débloque l'entrée de remise à zéro d'un compteur binaire 28. Ce dernier se met alors à compter à la fréquence d'une horloge 29.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.

Les deux premières lignes de sortie binaire 30 et 31 du compteur binaire 28 sont reliées aux entrées d'un générateur de bits 32 et ses trois lignes de sortie binaires suivantes 33, 34, 35 sont reliées aux trois entrées d'un multiplexeur 36 dont la sortie est reliée au générateur de bits 32 de telle sorte que le générateur de bits 33 fournit sur sa ligne de sortie 37, à un organe d'émission 38 reliée à une antenne 39 et par l'intermédiaire d'une porte 40 dont l'autre entrée est reliée à la sixième sortie binaire du compteur binaire 28 par la ligne 41, l'information à transmettre affichée aux huit entrées du multiplexeur 36, cette information étant contenue dans un organe de programmation 42, formé, dans l'exemple représenté, par huit interrupteurs pouvant occuper soit une position fermée soit une position ouverte, la valeur deshuit bits représentant cette information apparaissant en série par mot de huit bits sur la ligne de sortie 37 du générateur de bits 32 pour être émise.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.

Le compteur binaire 28 est capable de faire générer successivement, sur les lignes 37 du générateur de bits 32, plusieurs fois le mot contenu dans l'organe de programmation 42 et représentant l'information. Ce nombre est déterminé par le choix de l'une de ses sorties 43 en la reliant à l'entrée de remise à zéro de la bascule 27 par la ligne 44.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.

On peut noter que la sixième ligne de sortie 41 du compteur binaire 28 est reliée à la porte 41 et sert à inhiber l'émission entre deux mots pour permettre au récepteur que l'on décrira plus loin en référence à la figure 3 de se synchroniser.It can be noted that 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 .

En outre, la fréquence de l'horloge 29 peut être modifiée en modifiant sa constante de temps déterminée par l'une des résistances 45, 46 et 47 et le condensateur 48. D'autres résistances et d'autres condensateurs pourraient être prévus.In addition, 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.

Il ressort de ce qui précède que l'émetteur 24 permet d'émettre une information de type binaire dont le contenu est déterminé par le mot représenté dans l'organe de programmation 42, de faire répéter successivement l'information contenue dans le mot binaire un nombre de fois déterminé par le choix de l'une des sorties 43 du compteur binaire 28, et de fixer une durée totale d'émission par le choix de l'une des résistances 45, 46, 47 déterminant la constante de temps de l'horloge 29.It appears from the above that 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.

En référence à la figure 3, on va maintenant décrire un récepteur repéré d'une manière générale par la référence 49 et susceptible de recevoir l'information binaire provenant d'un émetteur semblable à l'émetteur 24 représenté sur la figure 2, ce récepteur 49 étant susceptible de former respectivement les récepteurs 15 et 16 du système d'alarme 1 représenté sur la figure 1.With reference to FIG. 3, we will now describe a receiver generally identified by the reference 49 and 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.

Le récepteur 49 comprend une antenne 50 reliée à un organe de réception 51 fournissant sur sa ligne de sortie 52 l'information binaire reçue en série.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.

La ligne de sortie 52 de l'organe de réception 51 est reliée à un décodeur de bits 53 capable d'extraire l'information contenue dans chaque bit de manière à l'enregistrer et la mémoriser progressivement dans deux registres à décalage 54 et 55 à huit bits montés en série, la ligne de sortie 52 étant par ailleurs reliée à un organe de synchronisation de bits 56 dont la sortie est reliée aux entrées d'horloge du décodeur de bits 53 et des registres à décalage 54 et 55. Les huit sorties parallèles des registres à décalage 54 et 55 sont reliées à un comparateur de mots 57 dont l'ordre de comparaison des deux mots qu'il reçoit des registres à décalage 54 et 55 lui est fourni par un synchronisateur de mots 58 activé par la ligne de sortie 52 de l'organe de réception 51.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.

Dès que les deux mots de huit bits contenus dans les registres à décalage 54 et 55 sont identiques, le comparateur de mots 57 fournit à une porte 59 un ordre de transfert du mot de huit bits contenu dans le registre à décalage 55 représentant l'information reçue et décodée vers un organe de traitement 60. Cet organe de commande 60 peut être, dans l'exemple, soit le dispositif de traitement 21 soit un organe d'actionnement de la sirène 22.As soon as the two eight-bit words contained in the shift registers 54 and 55 are identical, 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.

Afin de pouvoir décoder en parallèle une information représentée par des mots et bits de durée et/ou de format différents reçue par l'unique organe de réception 51, on prévoit, entre l'organe de réception 51, sur sa ligne de sortie 52, et l'organe de traitement 6Q des ensembles repérés d'une manière générale par les références 61 et 62 identiques à celui qui vient d'être décrit, leurs organes de synchronisation n'ayant pas les mêmes constantes de temps. Il est ainsi possible, avec un même organe de réception 51, de recevoir des informations de formats et de durée différentes en un nombre quelconque.In order to be able to decode in parallel information represented by words and bits of different duration and / or format received by the single reception member 51, provision is made, between the reception member 51, on its output line 52, and the processing unit 6Q of the assemblies generally identified by the references 61 and 62 identical to the one just described, their synchronization members not having the same time constants. It is thus possible, with the same receiving member 51, to receive information of different formats and duration in any number.

Il ressort de ce qui précède que le récepteur 49 est particulièrement adapté pour prendre en compte une information contenue dans un mot binaire dès qu'il a reçu successivement deux mots identiques représentant cette information.It appears from the above that 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.

On va maintenant décrire comment il est possible d'adapter l'émetteur 24 et le récepteur 49 représentes respectivement sur les figures 2 et 3 au système d'alarme 1 représenté sur la figure 1, dans le but que ce sytème d'alarme ait une sécurité de déclenchement la plus grande possible.We will now describe how it is possible to adapt the transmitter 24 and the receiver 49 shown respectively in Figures 2 and 3 to the alarm system 1 shown in Figure 1, with the aim that this alarm system has a greatest possible trigger safety.

Il est à noter que dans un système d'alarme tel que celui représenté sur la figure 1, il est particulièrement intéressant que certaines liaisons radioélectriques soient prioritaires sur d'autres en cas d'émission simultanée. Il est donc intéressant de hiérarchiser les dispositifs le composant.It should be noted that in an alarm system such as that shown in FIG. 1, it is particularly advantageous that certain radio links have priority over others in the event of simultaneous transmission. It is therefore interesting to prioritize the devices making it up.

En effet, on peut considérer que la liaison 4a entre le dispositif de détection de mouvement 4 et la centrale 5 doit être prioritaire sur les liaisons 2a et 3a entre les dispositifs de détection d'état 2 et 3 en vue d'être prise en compte par la centrale 5, étant donné que le dispositif de détection de mouvement 4 est placé, comme on l'a vu, à l'intérieur d'un local et que les dispositifs de détection d'état 2 et 3 sont placés, en général, à sa périmétrie, le dispositif de détection de mouvement 4 détectant un intrus déjà introduit dans le local. En outre, pour qu'au moins l'une des liaisons 2a et 3a de l'un des dispositifs de détection d'état 2 et 3 et la centrale 5 soit prise en compte par cette centrale, on peut considérer que le dispositif de détection d'état 3 est prioritaire sur le dispositif de détection d'état 2.Indeed, it can be considered that 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. by 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. In addition, so that at least one of the links 2a and 3a of one of the state detection devices 2 and 3 and the control unit 5 is taken into account by this control unit, it can be considered that the detection device status 3 has priority over status detection device 2.

On peut considérer comme avantageux que la liaison 5a entre la centrale 5 et le dispositif de signalisation 7 est prioritaire sur les liaisons 2a, 3a et 4a puisqu'elle transmet un ordre d'actionnement à la sirène 22.It can be considered advantageous that 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.

On peut également considérer que la liaison 6a entre le dispositif de commande 6 et la centrale 5 est prioritaire sur les liaisons 2a, 3a, 4a et 5a, étant donné que ce dispositif de commande 6 a pour butude commander l'état de fonctionnement de laccentrale 5.We can also consider that the link 6a between the control device 6 and the central unit 5 has priority over the links 2a, 3a, 4a and 5a, given that this control device 6 aims to control the operating status of the central unit 5.

On peut enfin considérer que la liaison 8a entre le dispositif d'appel à l'aide 8 et le dispositif de signalisation 7, qui présente un caractère d'urgence, comme on l'a vu précédemment, doit être prioritaire sur toutes les autres.We can finally consider that the link 8a between the call for help device 8 and the signaling device 7, which has an emergency nature, as we saw previously, must have priority over all the others.

Les dispositifs formant le système d'alarme 1 sont donc de préférence hiérarchiser de la manière suivante : dispositif de détection d'état 2, dispositif de détection d'état 3, dispositif de détection de mouvement 4, centrale 5, dispositif de commande 6, et dispositif d'appel à l'aide 8.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.

L'émetteur 24 et le récepteur 49 sont particulièrement adaptés pour pouvoir réaliser cette hiérarchisation.The transmitter 24 and the receiver 49 are particularly suitable for being able to achieve this hierarchy.

En effet on vu que le récepteur 49 est adapté pour prendre en compte une information dès qu'il a reçu successivement deux mots binaires identiques représentant cette information, et qu'il peut être prévu pour pouvoir décoder des mots et bits de durée et/ou de format différents.In fact, it has been seen that 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.

On a vu également que l'émetteur 24 peut émettre un mot binaire représentant une information un nombre de fois déterminé par le choix de l'une des sorties 43 du compteur bipaire 28. Alors, comme le récepteur 49 est apte à prendre en compte une information dans la mesure où il la reçoit deux fois successivement, il est nécessaire que la différence minimum du nombre de répétition des mêmes mots de format et durée identiques par deux émetteurs 24 hiérarchiquement contigus doit être de quatre mots pour que le récepteur puisse prendre en compte l'information de l'émetteur hiérarchiquement le plus élevé si ces deux émetteurs émettent, simultanément. D'une manière générale, on peut noter que cette différence (n1-no) du nombre des répétitions (n et ni) entre deux niveaux hiérarchiques contigus doit être au moins égale à deux fois le nombre (k) de mots identiques successifs que doit recevoir le récepteur pour prendre en compte l'information contenue dans le mot, cette inégalité étant n1-no≥ 2k.We have also seen that 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. In general, it can be noted that 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.

On a vu également que l'émetteur 24 est adapté pour émettre des mots de formats différents en choisissant une constante de temps particulière pour l'horloge 29, par exemple en choisissant l'une des résistances 45, 46, 47 et que le récepteur 49 peut décoder des mots de format et de durée différente. Si l'on considère que le nombre de mots émis est n, que la durée des mots non prioritaires est do et que la durée des mots prioritaires est dj et que le récepteur doit recevoir k mots successifs identiques, par exemple deux dans le cas du récepteur 49, pour qu'une information soit prise en compte, la durée totale d'émission d1 du mot contenant l'information prioritaire doit être au minimum égale à la durée totale d'émission do des mots contenant l'information non prioritaire multipliée par le nombre n de mots émis divisés par la différence entre le membre n de mots émis et deux fois le nombre k de mots successifs identiques, cette inégalité étant d1 > do x

Figure imgb0002
We have also seen that 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
Figure imgb0002

Appliqué au système d'alarme 1 représenté sur la figure 1, on peut hiérarchiser le dispositif de détection 2, le dispositif de détection 3, le dispositif de détection 4, la centrale 5 et le dispositif d'appel à l'aide 8 en leur faisant émettre des mots de même format et de même durée et en modifiant le nombre de répétitions du mot pour chacun de ces dispositifs tandis qu'on peut hiérarchiser le dispositif de commande 6 en choisissant un mot de format différent, de façon à pouvoir discriminer ce dispositif par rappert à tous les autres.Applied to the alarm system 1 represented in FIG. 1, 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.

Dans un exemple dans lequel on a volontairement accru le nombre de répétitions, on a choisit que l'émetteur 9 du dispositif de détection 2 répète huit fois un mot durant 128 millisecondes, ce qui conduit à une durée d'émission totale de 1 024 millisecondes, que l'émetteur 10 du dispositif de détection 3 répète le mot seize fois, ce qui conduit à une durée totale d'émission de 2 048 millisecondes, que l'émetteur 11 du dispositif de détection 4 répète le mot vingt quatre fois, ce qui conduit à une durée totale d'émission de 3 072 millisecondes, et que l'émetteur 12 de la centrale 5 répète le mot trente deux fois, ce qui conduit à une durée totale d'émission de 4 096 millisecondes, tandis que pour l'émetteur 14 du dispositif d'appel à l'aide 8 on choisit par sécurité, un nombre de répétitions du mot largement supérieur pour conduire à une durée totale d'émission par exemple supérieure à trente secondes.In an example in which the number of repetitions has been deliberately increased, it has been chosen that 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 , that the transmitter 10 of the detection device 3 repeats the word sixteen times, which leads to a total transmission time of 2048 milliseconds, that 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, and that the transmitter 12 of control panel 5 repeats the word thirty two times, which leads to a total transmission time of 4,096 milliseconds, while for 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.

Dans ce même exemple on à choisit que l'émetteur 13 du dispositif de commande 6, qui comme on l'a vu doit être prioritaire par rapport aux dispositifs 2, 3, 4 et 5, répète trente deux fois un mot durant 256 millisecondes, ce qui conduit à une durée totale d'émission de 8 182 millisecondes, la durée d'émission de ce mot étant égale à deux fois la durée d'émission de chaque mot choisis pour les émetteurs des dispositifs 2, 3, 4 et 5.In this same example, we choose that 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.

En ce qui concerne le récepteur 15 du dispositif de centralisation 5, il est à noter qu'il comprend, dans cet exemple, un organe de réception 51 unique et deux ensembles de décodage branchés à la suite de cet organe de réception 51 compte tenu du fait qu'il doit être capable de décoder deux mots de durée différente.With regard to the receiver 15 of the centralization device 5, it should be noted that it 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.

La présente invention ne se limite évidemment pas à l'exemple ci-dessus décrit. On peut en effet envisager de hiérarchiser les dispositifs d'installation autres que des systèmes d'alarme et utilisant en particulier un canal d'échanges unique autre que radioélectrique; notamment du type à courant porteur, optique, sonique ou filaire.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.

Claims (6)

1. Procédé pour la transmission, sur un canal d'échanges unique notamment du type radioélectrique ou filaire, d'informations transmises sous'forme de signaux du type binaire ou numérique entre plusieurs émetteurs ou groupes d'émetteurs et au moins un récepteur, dans lequel chacun des émetteurs est susceptible d'émettre, pendant une durée limitée et à des moments aléatoires, en répétant successivement l'information qu'il a à transmettre, procédé caractérisé par le fait qu'il consiste à hiérarchiser chacun desdits émetteurs ou groupes d'émetteurs en affectant à chacun d'eux une durée totale d'émission différente et à sélectionner ou prendre en compte, lors de la réception par ledit récepteur de signaux émanant d'émetteurs ou de groupes d'émetteurs différents et se recouvrant partiellement ou ttotalement, l'information émanant de l'émetteur dont la durée d'émission est la plus longue.1. Method for the transmission, over a single exchange channel, in particular of the radio 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 one 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, a process characterized by the fact that it consists in prioritizing each of said transmitters or groups of transmitters by assigning to each of them a different total transmission duration and to select or take into account, when said receiver receives signals from different transmitters or groups of transmitters and partially or totally overlapping , the information from the issuer with the longest transmission duration. 2. Procédé selon la revendication 1, caractérise par le fait qu'il consiste, pour chacun desdits émetteurs ou groupes d'émetteurs, à répéter un nombre différent de fois l'émission de l'information représentée par des mots ou bits successifs de format ou de durée identiques pour tous les émetteurs.2. Method according to claim 1, characterized in that it consists, for each of said transmitters or groups of transmitters, in repeating a different number of times the transmission of the information represented by successive words or bits of format or of identical duration for all transmitters. 3. Procédé selon la revendication 1, caractérisé par le fait qu'il consiste, pour chacun desdits émetteurs ou groupes d'émetteurs, à répéter le même nombre de fois l'émission de l'information représentée par des mots ou bits successifs en affectant à chacun desdits émetteurs ou desdits groupes d'émetteurs, une durée totale d'émission différente.3. Method according to claim 1, characterized in that it consists, for each of said transmitters or groups of transmitters, in repeating the same number of times the transmission of the information represented by successive words or bits by affecting to each of said transmitters or of said groups of transmitters, a different total transmission duration. 4. Application du procédé selon l'une quelconque des revendications 1 à 3 à la hiérarchisation des dispositifs émetteurs d'un système d'alarme destiné à la protection d'un local comprenant notamment au moins un dispositif de détection d'état et/ou au moins un dispositif de détection de mouvement et/ou au moins un dispositif de centralisation et/ou au moins un dispositif de signalisation et/ou au moins un dispositif de commande et/ou au moins un dispositif d'appel à l'aide, dispositifs qui comprennent des moyens d'émission et/ou des moyens de réception en vue d'échanger des informations de type binaire sur un canal d'échanges unique.4. Application of the method according to any one of claims 1 to 3 to the prioritization of the transmitting devices of an alarm system intended for the protection of a room comprising in particular at least one state detection device and / or at least one movement detection device and / or at least one centralization device and / or at least one signaling device and / or at least one control device and / or at least one call for assistance device, devices which include transmission means and / or reception means for exchanging binary type information over a single exchange channel. 5- Application selon la revendication 4, dans la.- quelle au moins deux des dispositifs émetteurs du système d'alarme sont hiérarchisés, par ordre croissant d'importance, de la manière suivante dispositif de détection périphérique placé à l'extérieur du local à protéger, dispositif de détection périmétrique placé sur la périmétrie du local à protéger, dispositif de détection d'état ou de mouvement placé à l'intérieur du local à protéger, dispositif de centralisation, dispositif de commande, dispositif d'appel à l'aide.5- Application according to claim 4, in which - at least two of the transmitting devices of the alarm system are prioritized, in ascending order of importance, as follows peripheral detection device placed outside the room to be protected, perimeter detection device placed on the perimeter of the room to be protected, state or movement detection device placed inside the room to be protected, centralization device, control device, call for help device. 6. Application selon l'une des revendications 4 et 5 à la hiérarchisation par zones des dispositifs de zones géographiques différentes du local à protéger.6. Application according to one of claims 4 and 5 to the prioritization by areas of devices from different geographic areas of the room to be protected.
EP19830107390 1982-08-03 1983-07-27 Method for information transmission on a single communication channel, and application of this method, particularly in devices constituting an alarm system Expired EP0100523B1 (en)

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FR8213579A FR2531587A1 (en) 1982-08-03 1982-08-03 METHOD FOR TRANSMITTING INFORMATION ON A SINGLE CHANGES CHANNEL AND APPLYING SAID METHOD IN PARTICULAR TO DEVICES FORMING AN ALARM SYSTEM
FR8213579 1982-08-03

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WO1987003726A1 (en) * 1985-12-06 1987-06-18 Albert Soblet Calling system for co-ordinated interventions
EP0446979A1 (en) * 1990-03-16 1991-09-18 Ericsson Radio Systems B.V. System for transmitting alarm signals with a repetition
EP0833288A2 (en) * 1996-09-30 1998-04-01 Siemens Aktiengesellschaft Method for radio transmission of measured data of sensors and radio alarm system
US6876457B2 (en) * 2002-07-23 2005-04-05 Leuze Lumiflex Gmbh & Co., Kg Light grid
FR3016244A1 (en) * 2014-01-08 2015-07-10 Renault Sa METHOD OF COMMUNICATING WITH A CONTROL CIRCUIT OF A BATTERY OF ACCUMULATORS

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987003726A1 (en) * 1985-12-06 1987-06-18 Albert Soblet Calling system for co-ordinated interventions
EP0446979A1 (en) * 1990-03-16 1991-09-18 Ericsson Radio Systems B.V. System for transmitting alarm signals with a repetition
US5164704A (en) * 1990-03-16 1992-11-17 Ericsson Radio Systems B.V. System for transmitting alarm signals with a repetition
EP0833288A2 (en) * 1996-09-30 1998-04-01 Siemens Aktiengesellschaft Method for radio transmission of measured data of sensors and radio alarm system
EP0833288A3 (en) * 1996-09-30 2000-01-19 Siemens Aktiengesellschaft Method for radio transmission of measured data of sensors and radio alarm system
US6876457B2 (en) * 2002-07-23 2005-04-05 Leuze Lumiflex Gmbh & Co., Kg Light grid
FR3016244A1 (en) * 2014-01-08 2015-07-10 Renault Sa METHOD OF COMMUNICATING WITH A CONTROL CIRCUIT OF A BATTERY OF ACCUMULATORS
WO2015104493A1 (en) * 2014-01-08 2015-07-16 Renault S.A.S Method for communication with a circuit for controlling an accumulator battery

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FR2531587B1 (en) 1985-01-25

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