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EP1138179A1 - Method for controlling an ionizing radiation generator and implementing installation - Google Patents

Method for controlling an ionizing radiation generator and implementing installation

Info

Publication number
EP1138179A1
EP1138179A1 EP99972424A EP99972424A EP1138179A1 EP 1138179 A1 EP1138179 A1 EP 1138179A1 EP 99972424 A EP99972424 A EP 99972424A EP 99972424 A EP99972424 A EP 99972424A EP 1138179 A1 EP1138179 A1 EP 1138179A1
Authority
EP
European Patent Office
Prior art keywords
generator
control device
control
radiation
code
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99972424A
Other languages
German (de)
French (fr)
Other versions
EP1138179B1 (en
Inventor
Christian Rondeux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Balteau Non Destructive Testing En Abrege Balteau
Original Assignee
Balteau X-Ray SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Balteau X-Ray SA filed Critical Balteau X-Ray SA
Priority to EP99972424A priority Critical patent/EP1138179B1/en
Publication of EP1138179A1 publication Critical patent/EP1138179A1/en
Application granted granted Critical
Publication of EP1138179B1 publication Critical patent/EP1138179B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H05G1/26—Measuring, controlling or protecting
    • H05G1/30—Controlling
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/16—Electric signal transmission systems in which transmission is by pulses
    • G08C19/28—Electric signal transmission systems in which transmission is by pulses using pulse code

Definitions

  • the present invention relates to a method for controlling a generator of ionizing radiation.
  • the present invention also relates to the installation intended for the implementation of this method.
  • Technological background Generators of X-rays, alpha, gamma or other ionizing radiation (or radiation) require a control desk which must be placed at a sufficient distance from the radiation source to avoid any danger of excessive irradiation of the operator. This is particularly true in the field of non-destructive industrial control by ionizing radiation.
  • the device is used "in situ", for example in the factory or on site, or in an environment that varies with the application.
  • An X-ray generator for example, can be in one piece or made up of separate elements (power pack, high-voltage cable, X-ray tube).
  • control console is connected to the generator by an electric cable of a length such that it allows the operator to be far enough away.
  • the length of the cable therefore serves as a reference for the operator or installer to know the safety distance where the operator will have to be placed.
  • this cable can be a major handicap for the operator and / or for other people, possibly being below the safety distance from the generator. This is particularly the case if the arrangement of other site objects, for example when checking X-ray welds, prevents the operator from maintaining an overall view within the radius of insecurity around the generator that he controls . The operator would therefore not always be able to stop the generator to avoid endangering other people.
  • the document JP-A-09238962 describes a diagnostic and treatment system in the field of dentistry.
  • Electronic data flows are exchanged between a data storage device and different diagnostic devices, including a dental X-ray generator, and treatment devices located near one or more patients.
  • Data exchange is orchestrated by an input / output controller, which is remotely controlled by means of a wireless transmitter / receiver system.
  • the invention aims to facilitate the management of data to the dentist or his assistant.
  • the X-rays used in dentistry are of low energy ( ⁇ 70 keV) and the invention does not in itself meet the safety needs required during work on site with generators of ionizing radiation whose energy can, in certain case, to be several MeV.
  • the remote control can be used to control more than one device or instrument.
  • the document CN-A-1 087 171 describes a remote control provided with a transmitter / receiver making it possible to remotely control an X-ray generator.
  • This invention if it is intended to protect the operator , in no way discloses the operating mode as well as the advantages specific to the present application.
  • Remote control or digital radio frequency control of electronic equipment is well known.
  • document EP-A1-037 2308 the use of a radio transmitter / receiver system using digital frequencies is presented to remote control industrial equipment. Such an installation allows the operator to gain time, if necessary, by better vision, increased mobility or a more advantageous position. In terms of safety, it allows the operator to be removed from hazardous areas. Transmission validation means are implemented for the duration of the transmission (use of control channels, generation and comparison of parity bits and identification code).
  • a secure encrypted radio frequency transmission is presented, for example for an application of the garage door opening type. Security is ensured by operations on a code having a fixed part and a variable part.
  • the transmitted signal is amplitude modulated, demodulated by the receiver and the initial code is restored.
  • control unit which simultaneously sends via the transmitter a code specific to the receiver and a code specific to the device to be controlled.
  • the control information is supplied by the user to the control unit by means of a telephone network (telephone with keys).
  • a security device consists of a transmitter of a high frequency signal modulated to a word-code signal and a receiver having an alarm system.
  • a switching system with memory for entering code words and an input unit for entering a password. The latter is compared in a comparator to the code words in memory. If there is a match, the transmission is authorized and the alarm can be activated.
  • the present invention aims to propose a method for controlling a generator of ionizing radiation which provides very high security, avoids the aforementioned drawbacks and provides other advantages which will be described below.
  • An additional aim of the present invention is to propose an installation intended for the implementation of this process, bringing numerous advantages in terms of safety and site management.
  • FIG. 1 schematically represents the control device of a generator according to the invention.
  • the present invention relates to a method for controlling a generator of ionizing radiation in which a radio link is established between the generator and the control device.
  • the operator has the possibility of placing his control desk so as to have a general view of the surroundings of the generator to intervene in the event that other people enter the insecure area around the generator.
  • the connection between the generator and the control device comprises the transmission of a code specific to the generator and of a code specific to its connection with the control device and the communication of these two codes to the generator during each connection between the generator and the control device.
  • the radio link can however be interrupted, even very briefly, for any reason (operator-local control device distance too great, presence of an obstacle, poor quality of the transmission, wrong operation, fall and damage to the remote control, etc. .).
  • the generator stops emitting radiation and goes into safety.
  • the code specific to the connection of the control device is modified each time the generator is connected with another control device. There is then the possibility of controlling a generator by another command, in particular when the command used breaks down. On the other hand, when installing a site, it is no longer necessary to choose the control that was previously in service with the generator.
  • the code specific to the connection with the control device is modified according to the same mathematical rule.
  • the modification of the code specific to the connection with the control device consists of incrementation by addition of a determined number. This use of an incremental number constitutes the simplest mode, but generally sufficient to carry out said modification and to make possible the possible determination of the number of modifications which have occurred.
  • the code specific to the connection with the control device include not only a variable part, but also a fixed part specific to the control device.
  • a fixed part all or a specific part of the production number of the order, it is possible to avoid in a simple way that a generator being at a reasonable distance from another generator wrongly receives instructions from the command assigned to this other generator, which would happen in particular if the two commands had at the same time had the same incremental number and if the other command still had in memory the code of the first generator that it had previously managed.
  • any connection between the generator and the control device is established over the air.
  • the radio transmission means being present, this avoids the need and the possible disadvantages of another mode of transmission, for example by cable.
  • the generator initially communicates the two codes to the control device during of a pairing that is carried out when a new generator - control device couple is created.
  • security is reinforced by avoiding errors which could occur during the manual transmission of the codes.
  • local generator control device is meant the part of the generator, sometimes called a case, which may contain in particular the generator supply, the radio transmitter and in general the electrical control members which need not necessarily be at the very place where the radiation is produced.
  • pairing is carried out by connecting the control device of the invention to the local generator control device. At this time, the distance of the two devices is not useful and the connection itself may possibly cause the initial communication of the two codes.
  • the transmission between the generator and the control device is rendered inoperative if the codes do not identify with those of the pairing or if the transmission is cut off even very briefly to any reason (wrong operation, operator-console distance too large, fall and damage to the remote control, etc.)
  • transmission is also meant both the transmission from the generator and that to it. It is this means which provides the best guarantees so that only messages specific to the control device - generator pair are taken into account, although there is however the possibility of maintaining these guarantees when another device is assigned. control to a generator or another generator to a specific control device.
  • the magnitude of the radiation near the control device is measured, this in order to know the dose of radiation received by the operator. It is therefore advantageous that a warning signal is emitted when the dose exceeds a given threshold. This is in fact the means making it possible in particular to prevent the control device from being placed by mistake at an insufficient distance from the generator.
  • the radiation measuring device stops the generator. Security is therefore optimal.
  • the present invention also relates to an installation for implementing the method, conventionally comprising a generator of ionizing radiation and a remote control.
  • the generator and the remote control are each provided with a radio transmitter and a memory for recording and transmitting a generator code and a code specific to its connection with the control.
  • the installation includes a device for modifying the code specific to the generator - control link actuated when a new generator - control pair is formed. At this moment command is no longer conditioned to manage another generator.
  • the modification device is a device for adding to the preceding code a determined number.
  • the generator and the control are provided with connectors which can be connected by a cable for the initial communication of the two codes between the generator and the control.
  • This cable is intended only for initial communication: it can be simple and very short and it does not in any way reduce the advantages of the radio link according to the invention.
  • the generator control unit comprises a pairing member actuating the code modification device specific to the generator - control link.
  • the pairing member acts automatically when the control is placed near the local generator control device.
  • the generator and the control are provided with means for recording and transmitting in addition a code specific to the control.
  • the generator and its control are provided with means to render ineffective any communication with the exception of the initial transmission after the constitution of a new generator-command couple if said communication does not does not include the last codes saved.
  • the first transmission of the two codes comes from the generator. It is indeed the safest way to record the code of the generator, which can be stored therein as soon as it is manufactured.
  • control is provided at a short distance, with a detector measuring the amount of radiation which reaches it.
  • a Geiger counter will be used as a detector.
  • the detector comprises an alarm designed to intervene when the dose of radiation received exceeds a warning threshold.
  • said detector is connected to means for transmitting a signal causing the generator to stop.
  • the present invention can advantageously be applied in uses of ionizing radiation, both medical and industrial. It eliminates any electrical or mechanical connection between the generator and its control, except in certain cases (essentially to establish the initial codes at the time of pairing).
  • FIG. 1 very schematically represents all of the means allowing the control and the safety of an X-ray generator.
  • the command or remote control device 1 is the place where the operator is placed and where the operator intervenes to manage the X-ray generator 2.
  • the operator has a screen 3 where the various measurements carried out in particular by the ray detector 4 appear.
  • X which is a Geiger counter here, which informs him of the radiation dose he is undergoing, warns him if the dose becomes large or dangerous and, via command 1, authoritatively stops the generator when the dose exceeds a critical threshold. Of this fact, it is particularly impossible for it to function if the control 1 is too close to the generator 2.
  • the command 1 communicates with the generator 2 by the hertzian way via the radio transmitters 5 and 6. This communication is carried out in the two directions, on the one hand for the management of the generator and on the other hand for the transmission of the data of the generator towards the control 1 and 1 screen 3.
  • the generator 2 can include not only the generator itself, but also, nearby, the local control device 7 which contains the power supply of the generator itself and the various electrical components which do not necessarily have to be placed where the radiation is produced.
  • the control 1 and the local control device 7, which preferably include microprocessors or microcontrollers, contain the memories in which the codes are recorded as described above. These codes are used for each transmission, whatever its direction, between command 1 and generator 2.
  • the code specific to the link is incremented with each new pass, that is to say when the generator is associated with a new order. Instead of incrementing, you can also use a random code each time. Pairing is caused either by a manual action, either by a contact acting when the control 1 is placed against or on the local control device 7, or by the placement of a cable (not shown) between these two devices, said cable only used for pairing. It is through him that the codes are transmitted to the commands during pairing. For example, the generator's manufacturing number or the most distinctive part of that number is used as the generator code. The two codes are transmitted at the head of the message and the device receiving the message first checks the codes to make sure that the message concerns it.
  • a change of command for example following an installation of the generator on another site, a new pairing is carried out and the code specific to the link is incremented.
  • the old command which can also be on the same site in connection with another generator, can no longer manage the previous generator since the code has been modified.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Selective Calling Equipment (AREA)
  • Measurement Of Radiation (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Radiation-Therapy Devices (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

The ionizing radiation command mechanism has an ionizing radiation generator (2) commanded by a command mechanism (1). The command link is established using a radio channel, using a transmitter code system.

Description

PROCEDE DE COMMANDE D'UN GENERATEUR DE RAYONNEMENTS IONISANTS ET INSTALLATION POUR LA MISE EN OEUVRE DE CE METHOD FOR CONTROLLING AN IONIZING RADIATION GENERATOR AND INSTALLATION FOR IMPLEMENTING THE SAME
PROCEDEPROCESS
Objet de l'inventionSubject of the invention
La présente invention concerne un procédé de commande d'un générateur de rayonnements ionisants.The present invention relates to a method for controlling a generator of ionizing radiation.
La présente invention se rapporte également à l'installation destinée à la mise en oeuvre de ce procédé.The present invention also relates to the installation intended for the implementation of this method.
Arrière-plan technologique Les générateurs de rayons X, alpha, gamma ou d'autres rayonnements ionisants (ou radiations) nécessitent un pupitre de contrôle qui doit être placé à une distance suffisante de la source de rayonnement pour éviter tout danger d'irradiation excessive de l'opérateur. C'est particulièrement vrai dans le domaine du contrôle industriel non-destructif par rayonnements ionisants. Dans ce cas, l'appareil est employé « in situ », par exemple en usine ou sur chantier, soit dans un environnement qui varie avec l'application. Un générateur de rayons X, par exemple, peut être monobloc ou constitués d'éléments séparés (bloc de puissance, câble haute tension, tube à rayons X) .Technological background Generators of X-rays, alpha, gamma or other ionizing radiation (or radiation) require a control desk which must be placed at a sufficient distance from the radiation source to avoid any danger of excessive irradiation of the operator. This is particularly true in the field of non-destructive industrial control by ionizing radiation. In this case, the device is used "in situ", for example in the factory or on site, or in an environment that varies with the application. An X-ray generator, for example, can be in one piece or made up of separate elements (power pack, high-voltage cable, X-ray tube).
Généralement, le pupitre de commande est relié au générateur par un câble électrique d'une longueur telle qu'il permet à l'opérateur de s'en trouver suffisamment éloigné.Generally, the control console is connected to the generator by an electric cable of a length such that it allows the operator to be far enough away.
Souvent, la longueur du câble sert donc de référence à l'opérateur ou à l'installateur pour connaître la distance de sécurité où devra se placer l'opérateur.Often, the length of the cable therefore serves as a reference for the operator or installer to know the safety distance where the operator will have to be placed.
Cependant, la nécessité physique de ce câble peut être un handicap majeur pour l'opérateur et/ou pour d'autres personnes, pouvant se trouver le cas échéant en deçà de la distance de sécurité du générateur. C'est en particulier le cas si la disposition d'autres objets du chantier, par exemple lors du contrôle de soudures par rayons X, empêche l'opérateur de conserver une vue globale dans le rayon d'insécurité autour du générateur qu'il commande. L'opérateur n'aurait donc pas toujours la possibilité d'arrêter le générateur pour éviter de mettre en péril d'autres personnes.However, the physical necessity of this cable can be a major handicap for the operator and / or for other people, possibly being below the safety distance from the generator. This is particularly the case if the arrangement of other site objects, for example when checking X-ray welds, prevents the operator from maintaining an overall view within the radius of insecurity around the generator that he controls . The operator would therefore not always be able to stop the generator to avoid endangering other people.
D'autre part, aucun dispositif n'interdit généralement à l'opérateur de placer par erreur le pupitre de commande à une distance insuffisante du générateur. Il en est même empêché si la disposition des lieux ne permet pas d'étendre le câble en ligne droite de manière à matérialiser pour lui-même la distance de sécurité.On the other hand, no device generally prohibits the operator from placing the control console by mistake at an insufficient distance from the generator. It is even prevented if the layout of the premises does not allow the cable to be extended in a straight line so as to materialize the safety distance for itself.
L'état de la technique fait mention de dispositifs à télécommande permettant, pour des raisons de sécurité ou de commodité d'utilisation, d'éloigner l'opérateur ou l'utilisateur des zones de fonctionnement d'appareils, éventuellement dangereux.The state of the art mentions remote control devices making it possible, for reasons of safety or convenience of use, to distance the operator or the user from the operating zones of devices, possibly dangerous.
Ainsi, le document JP-A-09238962 décrit un système de diagnostic et traitement dans le domaine de la dentisterie. Des flux de données électroniques sont échangés entre un appareil de stockage de données et différents appareils de diagnostic, dont un générateur de rayons X dentaire, et de soins situés à proximité d'un ou plusieurs patients. L'échange de données est orchestré par un contrôleur d'entrées/sorties, lequel est piloté à distance au moyen d'un système émetteur/récepteur sans fil. L'invention a pour but de faciliter la gestion des données au dentiste ou à son assistant. Cependant, les rayons X utilisés en dentisterie sont de basse énergie (< 70 keV) et l'invention ne répond pas en soi aux besoins de sécurité exigés lors du travail sur chantier avec les générateurs de rayonnements ionisants dont l'énergie peut, dans certains cas, être de plusieurs MeV. De plus, la télécommande peut être utilisée pour piloter plus d'un appareil ou instrumen .Thus, the document JP-A-09238962 describes a diagnostic and treatment system in the field of dentistry. Electronic data flows are exchanged between a data storage device and different diagnostic devices, including a dental X-ray generator, and treatment devices located near one or more patients. Data exchange is orchestrated by an input / output controller, which is remotely controlled by means of a wireless transmitter / receiver system. The invention aims to facilitate the management of data to the dentist or his assistant. However, the X-rays used in dentistry are of low energy (<70 keV) and the invention does not in itself meet the safety needs required during work on site with generators of ionizing radiation whose energy can, in certain case, to be several MeV. In addition, the remote control can be used to control more than one device or instrument.
Egalement dans le domaine médical, on a décrit le contrôle télécommandé d'une installation de diagnostic, pouvant générer des rayonnements ionisants (brevet n° US-A-5 081 543) . Pour résoudre le problème de sécurité en cas de perturbation ou d'interruption du signal de commande, on a proposé l'utilisation simultanée de deux signaux porteurs d' information, comme par exemple un signal infrarouge et un signal ultrasonore. Un tel dispositif est complexe, coûteux et peu adapté à un environnement de chantier industriel.Also in the medical field, the remote control control of a diagnostic installation has been described, which can generate ionizing radiation (patent n ° US-A-5 081 543). To solve the security problem in the event of disturbance or interruption of the control signal, it has been proposed to use two signals carrying information simultaneously, such as for example an infrared signal and an ultrasonic signal. Such a device is complex, expensive and hardly suited to an industrial site environment.
Dans le domaine du contrôle de défauts, le document CN-A-1 087 171 décrit une télécommande munie d'un émetteur/récepteur permettant de piloter à distance un générateur de rayons X. Cette invention, si elle est destinée à protéger l'opérateur, ne divulgue en rien le mode opératoire ainsi que les avantages spécifiques à la présente demande.In the field of fault control, the document CN-A-1 087 171 describes a remote control provided with a transmitter / receiver making it possible to remotely control an X-ray generator. This invention, if it is intended to protect the operator , in no way discloses the operating mode as well as the advantages specific to the present application.
Le contrôle télécommandé ou radiofréquence digital d'appareillage électronique est bien connu. Dans le document EP-A1-037 238, on présente l'utilisation d'un système émetteur/récepteur radio utilisant des fréquences digitales pour télécommander un appareillage industriel. Une telle installation permet à l'opérateur de gagner du temps, le cas échéant, par une meilleure vision, une mobilité accrue ou encore une position plus avantageuse. Sur le plan de la sécurité, elle permet de soustraire l'opérateur aux zones dangereuses. Des moyens de validation de la transmission sont mis en œuvre pendant la durée de celle-ci (utilisation de canaux de contrôle, génération et comparaison de bits de parité et de code d'identification) .Remote control or digital radio frequency control of electronic equipment is well known. In document EP-A1-037 238, the use of a radio transmitter / receiver system using digital frequencies is presented to remote control industrial equipment. Such an installation allows the operator to gain time, if necessary, by better vision, increased mobility or a more advantageous position. In terms of safety, it allows the operator to be removed from hazardous areas. Transmission validation means are implemented for the duration of the transmission (use of control channels, generation and comparison of parity bits and identification code).
Dans O-A-96 37063, une transmission radio- fréquence encryptee sécurisée est présentée, par exemple pour une application du type ouverture de porte de garage. La sécurité est assurée au moyen d'opérations sur un code présentant une partie fixe et une partie variable. Le signal transmis est modulé en amplitude, démodulé par le récepteur et le code initial est restauré.In O-A-96 37063, a secure encrypted radio frequency transmission is presented, for example for an application of the garage door opening type. Security is ensured by operations on a code having a fixed part and a variable part. The transmitted signal is amplitude modulated, demodulated by the receiver and the initial code is restored.
Il est également possible, comme dans O-95 33328, de commander par radio un dispositif de commutation, avec une unité de contrôle qui envoie simultanément via l'émetteur un code propre au récepteur et un code propre au dispositif à commander. L'information de contrôle est fournie par l'utilisateur à l'unité de contrôle au moyen d'un réseau téléphonique (téléphone à touches) .It is also possible, as in O-95 33328, to control a switching device by radio, with a control unit which simultaneously sends via the transmitter a code specific to the receiver and a code specific to the device to be controlled. The control information is supplied by the user to the control unit by means of a telephone network (telephone with keys).
Dans le document US-A- 5 077 831, un dispositif de sécurité est constitué d'un émetteur d'un signal haute fréquence modulé à un signal mot-code et un récepteur possédant un système d'alarme. En vue de protéger l'émetteur contre toute utilisation non autorisée, celui-ci est pourvu d'un système de commutation avec mémoire pour entrer les mots-codes et une unité d'entrée pour introduire un mot de passe. Ce dernier est comparé dans un comparateur aux mots-codes en mémoire. S'il y a correspondance, la transmission est autorisée et l'alarme peut être activée. Buts de l'inventionIn document US-A-5,077,831, a security device consists of a transmitter of a high frequency signal modulated to a word-code signal and a receiver having an alarm system. In order to protect the transmitter from unauthorized use, it is provided with a switching system with memory for entering code words and an input unit for entering a password. The latter is compared in a comparator to the code words in memory. If there is a match, the transmission is authorized and the alarm can be activated. Aims of the invention
La présente invention vise à proposer un procédé de commande d'un générateur de rayonnements ionisants qui assure une sécurité très grande, évite les inconvénients précités et apporte d'autres avantages qui seront décrits ci-dessous.The present invention aims to propose a method for controlling a generator of ionizing radiation which provides very high security, avoids the aforementioned drawbacks and provides other advantages which will be described below.
Un but complémentaire de la présente invention est de proposer une installation destinée à la mise en oeuvre de ce procédé, apportant de nombreux avantages en matière de sécurité et de gestion du chantier.An additional aim of the present invention is to propose an installation intended for the implementation of this process, bringing numerous advantages in terms of safety and site management.
Brève description des figuresBrief description of the figures
La figure 1 représente schématiquement le dispositif de commande d'un générateur selon l'invention.FIG. 1 schematically represents the control device of a generator according to the invention.
Principaux éléments caractéristiques de l'inventionMain characteristic features of the invention
La présente invention se rapporte à un procédé destiné à commander un générateur de rayonnements ionisants dans lequel on établit une liaison par voie hertzienne entre le générateur et le dispositif de commande .The present invention relates to a method for controlling a generator of ionizing radiation in which a radio link is established between the generator and the control device.
Il en résulte que l'opérateur a la possibilité de placer son pupitre de commande de manière à disposer d'une vue générale des environs du générateur pour intervenir dans le cas où d'autres personnes entreraient dans la zone d'insécurité autour du générateur.As a result, the operator has the possibility of placing his control desk so as to have a general view of the surroundings of the generator to intervene in the event that other people enter the insecure area around the generator.
Par ailleurs, il n'est pas empêché par la longueur d'un câble de se placer lui-même à la distance de sécurité dans l'hypothèse où certains objets ne permettraient pas de disposer le câble en ligne droite si ce dernier est d'une longueur équivalente à ladite distance de sécurité.Furthermore, it is not prevented by the length of a cable from placing itself at the safety distance in the event that certain objects would not allow the cable to be placed in a straight line if it is a length equivalent to said safety distance.
Selon l'invention, la liaison entre le générateur et le dispositif de commande comprend la transmission d'un code propre au générateur et d'un code propre à sa liaison avec le dispositif de commande et la communication de ces deux codes au générateur lors de chaque liaison entre le générateur et le dispositif de commande. Ceci permet d'établir une liaison univoque, c'est-à-dire que le dispositif de commande ne peut gérer un autre générateur et que le générateur ne peut être géré par un autre dispositif de commande, tant que l'ensemble des deux codes n'est pas modifié. De manière avantageuse, une fois la liaison établie après reconnaissance des codes établissant une relation univoque entre le générateur et le dispositif de commande, ladite liaison hertzienne est maintenue en permanence pendant le fonctionnement du générateur, et en particulier, durant l'émission de rayonnements ionisants.According to the invention, the connection between the generator and the control device comprises the transmission of a code specific to the generator and of a code specific to its connection with the control device and the communication of these two codes to the generator during each connection between the generator and the control device. This makes it possible to establish a unique connection, that is to say that the control device cannot manage another generator and that the generator cannot be managed by another control device, as long as all of the two codes is not changed. Advantageously, once the connection has been established after recognition of the codes establishing a unique relationship between the generator and the control device, said radio link is permanently maintained during the operation of the generator, and in particular, during the emission of ionizing radiation. .
La liaison hertzienne peut toutefois être interrompue, même très brièvement, pour un motif quelconque (distance opérateur-dispositif local de contrôle trop grande, présence d'un obstacle, mauvaise qualité de la transmission, fausse manœuvre, chute et endommagement de la télécommande, etc.) . Dans ce cas, de manière particulièrement avantageuse, le générateur cesse d'émettre un rayonnement et se met en sécurité.The radio link can however be interrupted, even very briefly, for any reason (operator-local control device distance too great, presence of an obstacle, poor quality of the transmission, wrong operation, fall and damage to the remote control, etc. .). In this case, particularly advantageously, the generator stops emitting radiation and goes into safety.
Selon une forme d'exécution préférée de l'invention, le code propre à la liaison du dispositif de commande est modifié à chaque liaison du générateur avec un autre dispositif de commande. On a alors la possibilité de contrôler un générateur par une autre commande, en particulier lorsque la commande utilisée tombe en panne. D'autre part, il n'est plus nécessaire, lors de l'installation d'un chantier, de bien choisir la commande qui était auparavant en service avec le générateur.According to a preferred embodiment of the invention, the code specific to the connection of the control device is modified each time the generator is connected with another control device. There is then the possibility of controlling a generator by another command, in particular when the command used breaks down. On the other hand, when installing a site, it is no longer necessary to choose the control that was previously in service with the generator.
Avantageusement, le code propre à la liaison avec le dispositif de commande, à chaque liaison avec un autre dispositif de commande, est modifié selon une même règle mathématique Par ce moyen, on a la possibilité, en consultant le code actuel et en le comparant au code initial, de déterminer le nombre de changements intervenus. Selon une autre forme d'exécution préférée, la modification du code propre à la liaison avec le dispositif de commande consiste en l'incrémentation par addition d'un nombre déterminé. Cette utilisation d'un nombre incrémental constitue le mode le plus simple, mais généralement suffisant pour réaliser ladite modification et rendre possible la détermination éventuelle du nombre de modifications intervenues.Advantageously, the code specific to the connection with the control device, at each connection with a other control device, is modified according to the same mathematical rule. By this means, it is possible, by consulting the current code and comparing it to the initial code, to determine the number of changes that have occurred. According to another preferred embodiment, the modification of the code specific to the connection with the control device consists of incrementation by addition of a determined number. This use of an incremental number constitutes the simplest mode, but generally sufficient to carry out said modification and to make possible the possible determination of the number of modifications which have occurred.
De plus, il est avantageux que le code propre à la liaison avec le dispositif de commande comprenne non seulement une partie variable, mais aussi une partie fixe propre au dispositif de commande. Dans ce cas, par exemple, en prenant pour partie fixe la totalité ou une partie déterminée du numéro de fabrication de la commande, il est possible d'éviter de manière simple qu'un générateur se trouvant à une distance raisonnable d'un autre générateur reçoive à tort des instructions de la commande affectée à cet autre générateur, ce qui se produirait notamment si les deux commandes avaient à un moment donné un même nombre incrémental et si l'autre commande avait encore en mémoire le code du premier générateur qu'elle avait géré précédemment .In addition, it is advantageous that the code specific to the connection with the control device include not only a variable part, but also a fixed part specific to the control device. In this case, for example, by taking as a fixed part all or a specific part of the production number of the order, it is possible to avoid in a simple way that a generator being at a reasonable distance from another generator wrongly receives instructions from the command assigned to this other generator, which would happen in particular if the two commands had at the same time had the same incremental number and if the other command still had in memory the code of the first generator that it had previously managed.
Selon un mode de concrétisation de l'invention, toute liaison entre le générateur et le dispositif de commande est établie par voie hertzienne. Les moyens de transmission hertzienne étant présents, on évite ainsi la nécessité et les inconvénients éventuels d'un autre mode de transmission, par câble par exemple.According to one embodiment of the invention, any connection between the generator and the control device is established over the air. The radio transmission means being present, this avoids the need and the possible disadvantages of another mode of transmission, for example by cable.
De préférence, le générateur communique initialement les deux codes au dispositif de commande lors d'un pairage que l'on réalise au moment de la constitution d'un nouveau couple générateur - dispositif de commande. En évitant l'intervention humaine dans la communication initiale des codes, on renforce la sécurité en évitant les erreurs qui pourraient se produire lors de la transmission manuelle des codes.Preferably, the generator initially communicates the two codes to the control device during of a pairing that is carried out when a new generator - control device couple is created. By avoiding human intervention in the initial communication of the codes, security is reinforced by avoiding errors which could occur during the manual transmission of the codes.
On préfère ainsi donner 1 ' instruction de pairer par un signal qui se produit par le fait de placer le dispositif de commande à proximité du dispositif local de contrôle du générateur. Par "dispositif local de contrôle du générateur", on entend la partie du générateur, parfois appelée valise, qui peut contenir en particulier l'alimentation du générateur, le transmetteur hertzien et en général les organes électriques de contrôle qui ne doivent pas nécessairement se trouver à l'endroit même où le rayonnement est produit . En plaçant temporairement le dispositif de commande à proximité du dispositif local de contrôle du générateur, on a la possibilité par divers moyens tels qu'un contact actionné par le fait que les deux dispositifs se touchent, de provoquer le pairage.It is thus preferable to give the instruction to pair with a signal which is produced by placing the control device close to the local generator control device. By "local generator control device" is meant the part of the generator, sometimes called a case, which may contain in particular the generator supply, the radio transmitter and in general the electrical control members which need not necessarily be at the very place where the radiation is produced. By temporarily placing the control device near the local generator control device, it is possible by various means such as a contact actuated by the fact that the two devices touch, to cause pairing.
Avantageusement, on réalise le pairage en connectant le dispositif de commande de 1 ' invention au dispositif local de contrôle du générateur. A ce moment, la distance des deux dispositifs n'est pas utile et la connexion elle-même peut éventuellement provoquer la communication initiale des deux codes.Advantageously, pairing is carried out by connecting the control device of the invention to the local generator control device. At this time, the distance of the two devices is not useful and the connection itself may possibly cause the initial communication of the two codes.
De préférence, la transmission entre le générateur et le dispositif de commande, à l'exception de la communication initiale du pairage, est rendue inopérante si les codes ne s'identifient pas à ceux du pairage ou si la transmission est coupée même très brièvement pour un motif quelconque (fausse manœuvre, distance opérateur - pupitre trop grande, chute et endommagement de la télécommande, etc.) Par "transmission", on entend aussi bien la transmission au départ du générateur que celle vers celui-ci. C'est ce moyen qui apporte les meilleures garanties pour que seuls les messages propres au couple dispositif de commande - générateur soient pris en compte bien que l'on dispose cependant de la possibilité de maintenir ces garanties lorsque l'on affecte un autre dispositif de commande à un générateur ou un autre générateur à un dispositif de commande déterminé.Preferably, the transmission between the generator and the control device, with the exception of the initial pairing communication, is rendered inoperative if the codes do not identify with those of the pairing or if the transmission is cut off even very briefly to any reason (wrong operation, operator-console distance too large, fall and damage to the remote control, etc.) By "transmission" is also meant both the transmission from the generator and that to it. It is this means which provides the best guarantees so that only messages specific to the control device - generator pair are taken into account, although there is however the possibility of maintaining these guarantees when another device is assigned. control to a generator or another generator to a specific control device.
Avantageusement, lors du fonctionnement du générateur, on mesure l'importance du rayonnement près du dispositif de commande, ceci en vue de connaître la dose de rayonnement reçue par l'opérateur. Il est alors avantageux qu'un signal d'avertissement soit émis lorsque la dose dépasse un seuil donné. C'est en fait le moyen permettant en particulier d'éviter que le dispositif de commande soit placé par erreur à une distance insuffisante du générateur.Advantageously, during operation of the generator, the magnitude of the radiation near the control device is measured, this in order to know the dose of radiation received by the operator. It is therefore advantageous that a warning signal is emitted when the dose exceeds a given threshold. This is in fact the means making it possible in particular to prevent the control device from being placed by mistake at an insufficient distance from the generator.
De plus, on préfère que lorsque la radiation atteint un seuil de danger, l'appareil de mesure de la radiation entraîne l'arrêt du générateur. La sécurité est alors optimale.In addition, it is preferred that when the radiation reaches a danger threshold, the radiation measuring device stops the generator. Security is therefore optimal.
La présente invention concerne également une installation pour la mise en oeuvre du procédé, comprenant de manière classique un générateur de rayonnements ionisants et une commande à distance. Selon l'invention, le générateur et la commande à distance sont munis chacun d'un transmetteur hertzien et d'une mémoire pour l'enregistrement et la transmission d'un code du générateur et d'un code propre à sa liaison avec la commande. De préférence, l'installation comprend un dispositif de modification du code propre à la liaison générateur - commande actionné lors de la constitution d'un nouveau couple générateur - commande. A ce moment, la commande n'est plus conditionnée pour gérer un autre générateur.The present invention also relates to an installation for implementing the method, conventionally comprising a generator of ionizing radiation and a remote control. According to the invention, the generator and the remote control are each provided with a radio transmitter and a memory for recording and transmitting a generator code and a code specific to its connection with the control. . Preferably, the installation includes a device for modifying the code specific to the generator - control link actuated when a new generator - control pair is formed. At this moment command is no longer conditioned to manage another generator.
Avantageusement, le dispositif de modification est un dispositif d'addition au code précédent d'un nombre déterminé.Advantageously, the modification device is a device for adding to the preceding code a determined number.
Selon un mode d'exécution de l'invention, le générateur et la commande sont pourvus de connecteurs pouvant être reliés par un câble pour la communication initiale des deux codes entre le générateur et la commande. Ce câble est prévu uniquement pour la communication initiale: il peut être simple et très court et il ne réduit en rien les avantages de la liaison hertzienne selon 1 ' invention.According to one embodiment of the invention, the generator and the control are provided with connectors which can be connected by a cable for the initial communication of the two codes between the generator and the control. This cable is intended only for initial communication: it can be simple and very short and it does not in any way reduce the advantages of the radio link according to the invention.
De préférence, l'ensemble générateur commande comprend un organe de pairage actionnant le dispositif de modification du code propre à la liaison générateur - commande .Preferably, the generator control unit comprises a pairing member actuating the code modification device specific to the generator - control link.
Selon un mode d'exécution de l'invention, l'organe de pairage agit automatiquement lors du placement de la commande à proximité du dispositif local de contrôle du générateur.According to one embodiment of the invention, the pairing member acts automatically when the control is placed near the local generator control device.
Avantageusement, le générateur et la commande sont munis de moyens pour l'enregistrement et la transmission en outre d'un code propre à la commande. Selon un mode d'exécution préféré de l'invention, le générateur et sa commande sont pourvus de moyens pour rendre sans effet toute communication à l'exception de la transmission initiale après la constitution d'un nouveau couple générateur - commande si ladite communication ne comprend pas les derniers codes enregistrés .Advantageously, the generator and the control are provided with means for recording and transmitting in addition a code specific to the control. According to a preferred embodiment of the invention, the generator and its control are provided with means to render ineffective any communication with the exception of the initial transmission after the constitution of a new generator-command couple if said communication does not does not include the last codes saved.
De préférence, la première transmission des deux codes provient du générateur. C'est en effet la manière la plus sûre d'enregistrer sans erreur le code du générateur, lequel peut être mis en mémoire dans celui-ci dès sa fabrication.Preferably, the first transmission of the two codes comes from the generator. It is indeed the safest way to record the code of the generator, which can be stored therein as soon as it is manufactured.
Avantageusement, la commande est munie à une courte distance, d'un détecteur mesurant l'importance du rayonnement qui l'atteint. De préférence, on utilisera un compteur Geiger en guise de détecteur.Advantageously, the control is provided at a short distance, with a detector measuring the amount of radiation which reaches it. Preferably, a Geiger counter will be used as a detector.
Selon un mode de réalisation de l'invention, le détecteur comprend une alarme conçue pour intervenir lorsque la dose de radiation reçue dépasse un seuil d'avertissement.According to an embodiment of the invention, the detector comprises an alarm designed to intervene when the dose of radiation received exceeds a warning threshold.
De préférence, ledit détecteur est connecté à des moyens d'émission d'un signal entraînant l'arrêt du générateur.Preferably, said detector is connected to means for transmitting a signal causing the generator to stop.
La présente invention peut avantageusement être appliquée dans des utilisations des rayonnements ionisants aussi bien médicales qu'industrielles. Elle permet de s'affranchir de toute liaison électrique ou mécanique entre le générateur et sa commande, sauf dans certains cas (essentiellement pour établir les codes initiaux au moment du pairage) .The present invention can advantageously be applied in uses of ionizing radiation, both medical and industrial. It eliminates any electrical or mechanical connection between the generator and its control, except in certain cases (essentially to establish the initial codes at the time of pairing).
Description d'une forme d'exécution préférée de l'inventionDescription of a preferred embodiment of the invention
La figure 1 représente très schématiquement l'ensemble des moyens permettant la commande et la sécurité d'un générateur de rayons X.FIG. 1 very schematically represents all of the means allowing the control and the safety of an X-ray generator.
Le dispositif de commande ou télécommande 1 est le lieu où se place et où intervient l'opérateur pour gérer le générateur 2 de rayons X. L'opérateur dispose d'un écran 3 où apparaissent les diverses mesures exécutées notamment par le détecteur 4 de rayons X, qui est ici un compteur Geiger, qui l'informe de la dose de rayonnements qu'il subit, l'avertit si la dose devient importante ou dangereuse et, via la commande 1, arrête d'autorité le générateur lorsque la dose dépasse un seuil critique. De ce fait, il lui est impossible en particulier de fonctionner si la commande 1 se trouve trop près du générateur 2.The command or remote control device 1 is the place where the operator is placed and where the operator intervenes to manage the X-ray generator 2. The operator has a screen 3 where the various measurements carried out in particular by the ray detector 4 appear. X, which is a Geiger counter here, which informs him of the radiation dose he is undergoing, warns him if the dose becomes large or dangerous and, via command 1, authoritatively stops the generator when the dose exceeds a critical threshold. Of this fact, it is particularly impossible for it to function if the control 1 is too close to the generator 2.
La commande 1 communique avec le générateur 2 par la voie hertzienne via les transmetteurs radio 5 et 6. Cette communication se réalise dans les deux sens, d'une part pour la gestion du générateur et d'autre part pour la transmission des données du générateur vers la commande 1 et 1 ' écran 3. Le générateur 2 peut comprendre non seulement le générateur proprement dit, mais également, à proximité, le dispositif local de contrôle 7 qui contient l'alimentation électrique du générateur proprement dit et les divers organes électriques qui ne doivent pas impérativement être disposés à l'endroit où le rayonnement est produit .The command 1 communicates with the generator 2 by the hertzian way via the radio transmitters 5 and 6. This communication is carried out in the two directions, on the one hand for the management of the generator and on the other hand for the transmission of the data of the generator towards the control 1 and 1 screen 3. The generator 2 can include not only the generator itself, but also, nearby, the local control device 7 which contains the power supply of the generator itself and the various electrical components which do not necessarily have to be placed where the radiation is produced.
La commande 1 et le dispositif local de contrôle 7, qui comprennent de préférence des microprocesseurs ou des microcontrôleurs, contiennent les mémoires où sont enregistrés les codes tels que décrits ci- devant. Ces codes sont utilisés à chaque transmission, quel que soit son sens, entre la commande 1 et le générateur 2. Le code propre à la liaison est incrémenté à chaque nouveau passage, c'est-à-dire lorsque le générateur est associé avec une nouvelle commande. Au lieu d'une incrémentation, on peut également utiliser à chaque fois un code aléatoire. Le pairage est provoqué soit par une action manuelle, soit par un contact agissant lorsque la commande 1 est placée contre ou sur le dispositif local de contrôle 7, soit par le placement d'un câble (non représenté) entre ces deux dispositifs, ledit câble n'étant utilisé que pour le pairage. C'est par lui que sont transmis les codes à la commandes lors du pairage. On utilise par exemple le numéro de fabrication du générateur ou la partie la plus distinctive de ce numéro comme code du générateur. Les deux codes sont transmis en tête de message et le dispositif qui reçoit le message vérifie d'abord les codes pour s'assurer que le message le concerne.The control 1 and the local control device 7, which preferably include microprocessors or microcontrollers, contain the memories in which the codes are recorded as described above. These codes are used for each transmission, whatever its direction, between command 1 and generator 2. The code specific to the link is incremented with each new pass, that is to say when the generator is associated with a new order. Instead of incrementing, you can also use a random code each time. Pairing is caused either by a manual action, either by a contact acting when the control 1 is placed against or on the local control device 7, or by the placement of a cable (not shown) between these two devices, said cable only used for pairing. It is through him that the codes are transmitted to the commands during pairing. For example, the generator's manufacturing number or the most distinctive part of that number is used as the generator code. The two codes are transmitted at the head of the message and the device receiving the message first checks the codes to make sure that the message concerns it.
Lors d ' un changement de commande 1 , par exemple suite à une installation du générateur sur un autre chantier, on procède à un nouveau pairage et le code propre à la liaison est incrémenté. L'ancienne commande, qui peut se trouver également sur le même chantier en liaison avec un autre générateur, ne peut plus gérer le générateur précédent puisque le code a été modifié.During a change of command 1, for example following an installation of the generator on another site, a new pairing is carried out and the code specific to the link is incremented. The old command, which can also be on the same site in connection with another generator, can no longer manage the previous generator since the code has been modified.
Le pairage n'est nécessaire que lors d'un changement du couple générateur - commande. Pairing is only necessary when the generator-control pair is changed.

Claims

REVENDICATIONS
1. Procédé de commande d'un générateur de rayonnements ionisants (2), dans lequel on établit une liaison par voie hertzienne entre le générateur et le dispositif de commande (1) , caractérisé en ce que ladite liaison comprend la transmission d'un code propre au générateur et d'un code propre à sa liaison au dispositif de commande et en ce que l'on communique les deux codes lors de chaque liaison entre ledit générateur et ledit dispositif de commande.1. Method for controlling a generator of ionizing radiation (2), in which a radio link is established between the generator and the control device (1), characterized in that said link comprises the transmission of a code specific to the generator and a code specific to its connection to the control device and in that the two codes are communicated during each connection between said generator and said control device.
2. Procédé selon la revendication 1, caractérisé en ce que le code propre à la liaison au dispositif de commande est modifié à chaque mise en liaison du générateur avec un autre dispositif de commande. 2. Method according to claim 1, characterized in that the code specific to the connection to the control device is modified each time the generator is linked to another control device.
3. Procédé selon la revendication 2, caractérisé en ce la modification est effectuée selon une règle mathématique déterminée.3. Method according to claim 2, characterized in that the modification is carried out according to a determined mathematical rule.
4. Procédé selon la revendication 3, caractérisé en ce que la modification consiste en l'incrémentation par addition d'un nombre déterminé.4. Method according to claim 3, characterized in that the modification consists of incrementation by addition of a determined number.
5. Procédé selon l'une quelconque des revendications 2 à 4, caractérisé en ce que le code propre à la liaison au dispositif de commande comprend une partie variable et une partie fixe propre au dispositif de commande.5. Method according to any one of claims 2 to 4, characterized in that the code specific to the connection to the control device comprises a variable part and a fixed part specific to the control device.
6. Procédé selon l'une quelconque des revendications 2 à 5, caractérisé en ce que le dispositif local de contrôle (7) du générateur communique initialement les deux codes au dispositif de commande (1) lors d'un pairage réalisé au moment de la constitution d'un nouveau couple générateur - dispositif de commande.6. Method according to any one of claims 2 to 5, characterized in that the local control device (7) of the generator initially communicates the two codes to the control device (1) during a pairing carried out at the time of the creation of a new generator - control device couple.
7. Procédé selon la revendication 6, caractérisé en ce que 1 ' instruction de pairage est donnée par un signal produit par le fait de placer le dispositif de commande (1) à proximité du dispositif local de contrôle (7) du générateur.7. Method according to claim 6, characterized in that the pairing instruction is given by a signal produced by the fact of placing the device control (1) near the local control device (7) of the generator.
8. Procédé selon la revendication 7, caractérisé en ce que l'on réalise le pairage en connectant le dispositif de commande au dispositif local de contrôle du générateur.8. Method according to claim 7, characterized in that the pairing is carried out by connecting the control device to the local generator control device.
9. Procédé selon l'une quelconque des revendications 6 à 8, caractérisé en ce que la transmission hertzienne entre le générateur et le dispositif de commande, à l'exception de la communication initiale du pairage, est rendue inopérante si les codes ne s'identifient pas à ceux du pairage.9. Method according to any one of claims 6 to 8, characterized in that the radio transmission between the generator and the control device, with the exception of the initial communication of the pairing, is rendered inoperative if the codes do not not identify with those of pairing.
10. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que, lors du fonctionnement du générateur (2), l'importance du rayonnement est mesurée près du dispositif de commande (1) .10. Method according to any one of the preceding claims, characterized in that, during operation of the generator (2), the amount of radiation is measured near the control device (1).
11. Procédé selon la revendication 10, caractérisé en ce qu'un signal d'avertissement est donné lorsque la dose de rayonnement dépasse un seuil préalablement déterminé d'avertissement.11. Method according to claim 10, characterized in that a warning signal is given when the radiation dose exceeds a predetermined warning threshold.
12. Procédé selon la revendication 10 ou 11, caractérisé en ce que, lorsque le rayonnement atteint un seuil de danger, l'appareil de mesure du rayonnement (4) entraîne l'arrêt du générateur (2) . 12. Method according to claim 10 or 11, characterized in that, when the radiation reaches a danger threshold, the radiation measuring device (4) causes the generator (2) to stop.
13. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la liaison hertzienne entre le générateur (2) et le dispositif de commande (1) est maintenue à tout moment pendant le fonctionnement du générateur. 13. Method according to any one of the preceding claims, characterized in that the radio link between the generator (2) and the control device (1) is maintained at all times during operation of the generator.
14. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que, au cas où la liaison hertzienne entre le générateur (2) et le dispositif de commande (1) est interrompue pour une raison quelconque, le générateur cesse d'émettre un rayonnement et se met en sécurité.14. Method according to any one of the preceding claims, characterized in that, in the event that the radio link between the generator (2) and the control device (1) is interrupted for a reason arbitrary, the generator stops emitting radiation and goes into safety.
15. Installation pour la mise en oeuvre du procédé selon l'une quelconque des revendications précédentes, comprenant un générateur de rayonnement ionisant (2) et une commande à distance (1) , caractérisée en ce que le générateur (2) et la commande (1) sont munis chacun d'un transmetteur hertzien (5,6) et d'une mémoire pour l'enregistrement et la transmission d'un code du générateur et d'un code propre à sa liaison avec la commande .15. Installation for implementing the method according to any one of the preceding claims, comprising an ionizing radiation generator (2) and a remote control (1), characterized in that the generator (2) and the control ( 1) are each provided with a wireless transmitter (5,6) and with a memory for recording and transmitting a generator code and a code specific to its connection with the control.
16. Installation selon la revendication 15, caractérisée en ce qu'elle comprend un dispositif de modification du code propre à la liaison générateur commande actionné lors de la constitution d'un nouveau couple générateur - commande.16. Installation according to claim 15, characterized in that it comprises a device for modifying the code specific to the generator command link actuated during the constitution of a new generator - command pair.
17. Installation selon la revendication 16, caractérisée en ce que le dispositif de modification est un dispositif d'addition au code précédent d'un nombre déterminé.17. Installation according to claim 16, characterized in that the modification device is a device for adding to the preceding code a determined number.
18. Installation selon la revendication 16 ou 17, caractérisée en ce que le générateur et la commande sont pourvus de connecteurs pouvant être reliés par un câble pour la communication initiale des deux codes entre générateur et commande.18. Installation according to claim 16 or 17, characterized in that the generator and the control are provided with connectors which can be connected by a cable for the initial communication of the two codes between generator and control.
19. Installation selon l'une quelconque des revendications 16 à 18, caractérisée en ce que l'ensemble générateur - commande comprend un organe de pairage actionnant le dispositif de modification du code propre à la liaison générateur - commande.19. Installation according to any one of claims 16 to 18, characterized in that the generator - control unit comprises a pairing member actuating the code modification device specific to the generator - control link.
20. Installation selon la revendication 19, caractérisée en ce que l'organe de pairage agit automatiquement lors du placement de la commande à proximité du dispositif local de contrôle (7) du générateur .20. Installation according to claim 19, characterized in that the pairing member acts automatically during the placement of the control to proximity to the local control device (7) of the generator.
21. Installation selon l'une quelconque des revendications 15 à 20, caractérisée en ce que le générateur et la commande sont munis de moyens pour l'enregistrement et la transmission en outre d'un code propre à la commande.21. Installation according to any one of claims 15 to 20, characterized in that the generator and the control are provided with means for recording and transmission in addition to a code specific to the control.
22. Installation selon l'une quelconque des revendications 15 à 21, caractérisée en ce que le générateur et la commande sont pourvus de moyens de rendre sans effet toute communication, à l'exception de la transmission initiale après la constitution d'un nouveau couple générateur - commande, si ladite communication ne comprend pas les derniers codes enregistrés. 22. Installation according to any one of claims 15 to 21, characterized in that the generator and the control are provided with means of rendering all communication without effect, with the exception of the initial transmission after the constitution of a new couple generator - command, if said communication does not include the last codes stored.
23. Installation selon l'une quelconque des revendications 15 à 22, caractérisée en ce que la première transmission des deux codes part du générateur.23. Installation according to any one of claims 15 to 22, characterized in that the first transmission of the two codes starts from the generator.
24. Installation selon l'une quelconque des revendications 15 à 23, caractérisée en ce que la commande est munie, à une courte distance, d'un détecteur (4) mesurant l'importance de la rayonnement qui l'atteint.24. Installation according to any one of claims 15 to 23, characterized in that the control is provided, at a short distance, with a detector (4) measuring the importance of the radiation which reaches it.
25. Installation selon la revendication 24, caractérisé en ce que l'appareil de mesure du rayonnement (4) est un compteur Geiger. 25. Installation according to claim 24, characterized in that the radiation measuring device (4) is a Geiger counter.
26. Installation selon la revendication 24 ou26. Installation according to claim 24 or
25, caractérisée en ce que le détecteur (4) comprend une alarme conçue pour intervenir lorsque la dose de rayonnement reçue dépasse un seuil préalablement déterminé.25, characterized in that the detector (4) comprises an alarm designed to intervene when the radiation dose received exceeds a predetermined threshold.
27. Installation selon la revendication 24, caractérisée en ce que ledit détecteur (4) est connecté à des moyens d'émission d'un signal entraînant l'arrêt du générateur . 27. Installation according to claim 24, characterized in that said detector (4) is connected to means for transmitting a signal causing the generator to stop.
EP99972424A 1998-11-13 1999-11-09 Method for controlling an ionizing radiation generator and implementing installation Expired - Lifetime EP1138179B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99972424A EP1138179B1 (en) 1998-11-13 1999-11-09 Method for controlling an ionizing radiation generator and implementing installation

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP98870253 1998-11-13
EP98870253A EP1001664A1 (en) 1998-11-13 1998-11-13 Method for controlling a ionising radiation source and system thereof
EP99972424A EP1138179B1 (en) 1998-11-13 1999-11-09 Method for controlling an ionizing radiation generator and implementing installation
PCT/BE1999/000143 WO2000030416A1 (en) 1998-11-13 1999-11-09 Method for controlling an ionizing radiation generator and implementing installation

Publications (2)

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EP1138179A1 true EP1138179A1 (en) 2001-10-04
EP1138179B1 EP1138179B1 (en) 2004-03-17

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EP98870253A Withdrawn EP1001664A1 (en) 1998-11-13 1998-11-13 Method for controlling a ionising radiation source and system thereof
EP99972424A Expired - Lifetime EP1138179B1 (en) 1998-11-13 1999-11-09 Method for controlling an ionizing radiation generator and implementing installation

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EP98870253A Withdrawn EP1001664A1 (en) 1998-11-13 1998-11-13 Method for controlling a ionising radiation source and system thereof

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US (1) US6621890B1 (en)
EP (2) EP1001664A1 (en)
AT (1) ATE262267T1 (en)
AU (1) AU1367600A (en)
DE (1) DE69915680T2 (en)
WO (1) WO2000030416A1 (en)

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Also Published As

Publication number Publication date
US6621890B1 (en) 2003-09-16
EP1138179B1 (en) 2004-03-17
ATE262267T1 (en) 2004-04-15
EP1001664A1 (en) 2000-05-17
AU1367600A (en) 2000-06-05
DE69915680T2 (en) 2005-03-24
WO2000030416A1 (en) 2000-05-25
DE69915680D1 (en) 2004-04-22

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