EP0596240B1 - Dispositif pour la transmission de valeurs de mesure par une liaison vertio à haute fréquence - Google Patents

Dispositif pour la transmission de valeurs de mesure par une liaison vertio à haute fréquence Download PDF

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Publication number
EP0596240B1
EP0596240B1 EP93115404A EP93115404A EP0596240B1 EP 0596240 B1 EP0596240 B1 EP 0596240B1 EP 93115404 A EP93115404 A EP 93115404A EP 93115404 A EP93115404 A EP 93115404A EP 0596240 B1 EP0596240 B1 EP 0596240B1
Authority
EP
European Patent Office
Prior art keywords
receiver
transmitter
transmitters
channel
measured values
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.)
Expired - Lifetime
Application number
EP93115404A
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German (de)
English (en)
Other versions
EP0596240A1 (fr
Inventor
Jürgen Dipl.-Ing. Anlauf
Michael Dipl.-Ing. Fellhauer
Gerhard Dipl.-Ing. Haaga
Johannes Prof.Dr.-Ing. Gerstlauer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0596240A1 publication Critical patent/EP0596240A1/fr
Application granted granted Critical
Publication of EP0596240B1 publication Critical patent/EP0596240B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C15/00—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path
    • G08C15/02—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path simultaneously, i.e. using frequency division
    • G08C15/04—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path simultaneously, i.e. using frequency division the signals being modulated on carrier frequencies

Definitions

  • the invention relates to a device for transmitting Measured values via a high-frequency radio link according to the genus of Main claim.
  • DE-OS 35 38 687 is a test device for Motor vehicles are known which have a device for transmitting Measured values used over a radio frequency (RF) radio link.
  • RF radio frequency
  • a first embodiment provides that the several Sensors transmit measured values successively in time to a transmitter are supplied to the measured values as coded information radiates a given RF channel.
  • a stationary one Diagnostic device contains a receiver that points to one RF channel of the transmitter corresponding channel is matched. The Receiver contains a facility to separate the time successively sent measured values, which are then separated can be processed.
  • everyone is Sensor assigned a transmitter.
  • the stationary diagnostic device must number of different ones corresponding to the number of transmitters Have recipients, each on the assigned to them RF channels to be matched to transmitters.
  • the invention has for its object a simple device specify for the transmission of measured values via an HF radio link, which enables a sufficiently fast transmission of measured values at the same time, low expenditure on equipment.
  • the task is characterized by the features specified in the main claim solved.
  • the device according to the invention for the transmission of measured values via an RF radio link has the advantage that only two separate receivers are provided that are compatible with a variety of Channels work together.
  • the various stations broadcast the Measured values simultaneously on different RF channels which can be specified from.
  • a first receiver that works with at least two Transmitters is provided in chronological order on the transmitters corresponding RF channels. With this measure one A large number of measured values in succession for the Available. The maximum possible transfer rate decreases with the Increase in the number of channels. So at least one measured value with a high transfer rate is at least a second receiver is provided, with another transmitter interacts, the measured value required with a high transmission rate emits.
  • the second receiver is on the other transmitter corresponding RF channel.
  • the transmitter and the Both receivers can be pre-selected for the HF channel exhibit. This measure increases the availability of the Device according to the invention in that, for example, at a disturbed RF channel or, for example, one already occupied found RF channel another channel can be selected.
  • the transmitters Switching means are assigned for specifying an RF channel.
  • the selection of the RF channels of the transmitter are carried out from the receiving side, at which the RF channels have already been selected.
  • a simple embodiment provides a galvanic connection, which is implemented for example by means of a plug connection.
  • Another advantageous embodiment is one electromagnetic near-field coupling provided, for example works by means of a transformer coupling, on which Receiver and inductive components on the transmitter side are arranged over the preferably magnetic near field Coupling takes place.
  • the device according to the invention is particularly suitable for Use in automotive diagnostics.
  • the most varied measured values are based on at least another measured value is to be obtained.
  • a reference measured value is, for example, the speed.
  • the speed must therefore with a high transmission rate, so that a Real-time measurement processing is possible.
  • the station that the The speed measured value emits, then acts with the second receiver together, which is tuned to a fixed RF channel.
  • a preferred use of the device according to the invention is in given a brake pressure measuring system in which the transmission of a Reference pressure is required.
  • the reference pressure is preferred tapped on a brake pressure coupling head.
  • a device according to the invention for the transmission of measured values via an RF radio link is shown in the figure.
  • the Transmitter 10 emits a high-frequency signal via an antenna 12, that is generated in a transmission stage 13.
  • the radiated high-frequency signal is by means of a modulator 14 with that of a measured value emitted from a sensor 15.
  • the broadcast stage 13 contains an RF channel selector 16 that receives input signals from one Input 17 and / or from a connector 18 and / or from one first part 19 of an electromagnetic near field coupling 20 receives fed.
  • the receiving device 11 contains an antenna 21 which a received signal to a first receiver 22 and to a second Receiver 23 delivers.
  • the two receivers 22, 23, each one RF channel selectors 24, 25 contain signals to one signal processing arrangement 26 from.
  • the signal processing Arrangement 26 contains an RF channel specification 27, each of which signals the RF channel selector 24, 25 outputs.
  • the signal processing arrangement 26 also indicates signals to a connector 28 and / or a second part 29 of the electromagnetic near-field coupling 20 as well as from a display 30.
  • the arrangement 26 is fed in Signal from an input device 31.
  • the RF channel specification 27 receives a timing arrangement 32 Signal supplied.
  • the device according to the invention works as follows: A first group of transmitters 10 interacts with the first receiver 22.
  • the transmitters 10 have the task of transmitting the measured values detected by at least one sensor 15 assigned to them to the receiving device 11 by means of radiated high-frequency energy.
  • the measured value emitted by the sensor 15 is fed to the modulator 14, the output signal of which modulates the high-frequency output signal generated by the transmitter stage 13 accordingly.
  • frequency modulation can be provided.
  • the high-frequency carrier frequency which corresponds to a specific RF channel, is predetermined for the transmission stage 13 via the RF channel selector 16.
  • the channel selector 16 is preferably part of a frequency synthesizer which derives the predetermined transmission frequency by means of a phase locked loop from a single, fixed predetermined stable reference frequency source.
  • input 17 can be used to specify the RF channel be provided, the switching means, preferably a number of Includes miniature slide switches. Instead of entering 17, which in Transmitter 10 is arranged, it is also possible to switch the RF channel from the To specify receiving device 11 from.
  • the connector 18 is provided with a suitable Counterpart, the connector 28, interacts.
  • the electromagnetic one Near field coupling 20 is provided.
  • the electromagnetic Near field coupling 20 sees a wireless Signal transmission via the electrical and / or the magnetic Near field of electromagnetic radiation. Particularly suitable is the use of the magnetic near field.
  • the first part 19 and the second part 29 of the electromagnetic Near field coupling 20 is provided, which is therefore preferably in each case contain inductive elements.
  • the inductive elements form the Bringing together a loosely coupled transformer.
  • the high-frequency radiated by the transmitters 10 via antennas 12 Energy is received by the antenna 21 of the receiving device 11 and fed to the two receivers 22, 23. Both recipients each contain an RF channel selector 24, 25, each also are preferably implemented as a frequency synthesizer.
  • the reception frequency used by the transmitters 10 RF channels must correspond to the RF channel specification 27 provided that in the receiver-side signal processing Arrangement 26 is arranged.
  • the selection of the RF channels as well as the The channels are assigned to the individual transmitters 10 preferably via the input device 31.
  • the of the Input device 31 signals are output in the signal processing arrangement 26 to the RF channel specification 27 forwarded which suitable signals to control the RF channel selector 24, 25 generated.
  • the first receiver 22 in chronological order by the Timer arrangement 32 is predetermined, at least on two different RF channels is tuned.
  • the first receiver 22, which, in addition to an RF input part, preferably also a demodulator contains, can therefore in chronological order that of at least two Transmitters 10 received measured values and the signal processing arrangement 26 for further processing hand off.
  • the second receiver 23 is provided, which at least during the Measurement process constantly on the specified high-frequency channel is coordinated, via which the measured value is transmitted that with high transfer rate is required. Will be more than one Measured value with a high transmission rate, the Device according to the invention supplemented by further receivers 23 be fixed on an RF channel during the measurement process are set.
  • the signal processing arrangement 26 possible, the corresponding Signals for RF channel selection on the connector 28 and / or second part 29 of the electromagnetic near-field coupling 20 for To make available.
  • the individual transmitters 10 can then one after the other either via the plug connection 18, 28 or via the electromagnetic near-field coupling 20 to the desired RF channels be coordinated.
  • the second receiver 23 also preferably contains one RF input part also has a demodulator that displays the measured value emits the signal processing arrangement 26.
  • the arrangement 26 can be used as a diagnostic device, which carries out the desired processing of measured values and outputs for example on the display 30.
  • the device according to the invention is particularly suitable for Use in automotive diagnostics.
  • the special advantage lies in the fact that a previously required wiring effort and reduces the risk of incorrect adaptation becomes. It also increases the risk of accidents caused by cables lying around in the workshop is significantly reduced.
  • Another The advantage of this use is the use of RF properties.
  • the transmit frequency of the transmitters 10 is preferred are in the megahertz or gigahertz range. This comparatively high transmission frequencies enable a high one Signal transmission rate and on the other hand the use of antennas 12, 21, which have a high efficiency.
  • the dimensions of the Antennas 12, 21 can certainly be used Wavelengths. A directional effect that may occur the antennas 12, 21 for the radiated or received RF energy and the associated disadvantage that location-dependent Fluctuations in field strength occur due to the reflections weakened within the workshop building.
  • a preferred application is in a brake pressure measuring system given.
  • the braking pressures of each axle must be can be measured together with a reference pressure.
  • the reference pressure occurs for example on the clutch head brake.
  • This Reference pressure is transmitted with a transmitter 10, which on a HF channel is tuned to which the second receiver 23 in the Receiving device 11 is coordinated. For the comparison of the the individual pressure values are always the reference pressure to disposal.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Claims (10)

  1. Système pour la transmission de valeurs de mesure par liaison radio à haute fréquence,
    caractérisé en ce que
    il comprend un groupe d'émetteurs à au moins deux émetteurs (10),
    les émetteurs (10) du groupe d'émetteurs émettent en même temps sur des canaux HF différents,
    il comprend un premier récepteur (22) pour coopérer avec les émetteurs (10) du groupe auquel sont attribués de manière chronologique, les canaux HF correspondant aux émetteurs (10) du groupe,
    il comprend au moins un émetteur supplémentaire (10) qui émet en même temps que les émetteurs (10) du groupe,
    un canal HF prédéterminé différent des canaux HF des émetteurs du groupe est attribué à l'émetteur supplémentaire (10),
    au moins un récepteur supplémentaire (23) coopère avec au moins l'unique émetteur supplémentaire (10), ce récepteur étant réglé de manière fixe sur le canal HF de l'émetteur supplémentaire (10),
    le premier récepteur (22) et au moins l'unique récepteur supplémentaire (23) font partie d'un dispositif de réception (11),
    au moins l'unique émetteur (10) supplémentaire émet une valeur de mesure de référence que reçoit au moins l'unique récepteur supplémentaire,
    les valeurs de mesure reçues par le premier récepteur (22) sont mises en rapport avec la valeur de référence reçue par au moins l'unique récepteur supplémentaire (23).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    l'émetteur (10) présente une entrée (17) pour l'attribution des canaux HF.
  3. Dispositif selon la revendication 1,
    caractérisé par
    un dispositif d'entrée pour l'attribution des canaux HF aux récepteurs (22, 23).
  4. Dispositif selon la revendication 2 ou 3,
    caractérisé par
    des moyens (18, 28 ; 20) pour l'attribution des canaux HF dans l'émetteur (10) à partir d'un dispositif de réception (11) comprenant les récepteurs (22, 23).
  5. Dispositif selon la revendication 4,
    caractérisé par
    un connecteur à fiche (18, 28).
  6. Dispositif selon la revendication 4,
    caractérisé par
    un couplage par effet de champ électromagnétique proche (20) qui comporte une première partie (19) associée à l'émetteur (10) et une seconde partie (29) associée au dispositif de réception (11).
  7. Dispositif selon la revendication 2 ou 3,
    caractérisé en ce que
    les émetteurs (10) et les récepteurs (22, 23) comportent un synthétiseur de fréquence (16, 24, 25) pour l'attribution des canaux HF.
  8. Dispositif selon la revendication 1,
    caractérisé par
    son application à un dispositif de diagnostic pour véhicules automobiles.
  9. Dispositif selon la revendication 8,
    caractérisé par
    son application comme dispositif de diagnostic d'un système de mesure de pression de frein.
  10. Dispositif selon la revendication 9,
    caractérisé en ce que
    l'émetteur supplémentaire (10) détermine la pression de référence comme pression apparaissant à une tête de couplage.
EP93115404A 1992-10-31 1993-09-24 Dispositif pour la transmission de valeurs de mesure par une liaison vertio à haute fréquence Expired - Lifetime EP0596240B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4236923A DE4236923A1 (de) 1992-10-31 1992-10-31 Vorrichtung zur Übertragung von Meßwerten über eine Hochfrequenz-Funkverbindung
DE4236923 1992-10-31

Publications (2)

Publication Number Publication Date
EP0596240A1 EP0596240A1 (fr) 1994-05-11
EP0596240B1 true EP0596240B1 (fr) 2000-06-21

Family

ID=6471883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93115404A Expired - Lifetime EP0596240B1 (fr) 1992-10-31 1993-09-24 Dispositif pour la transmission de valeurs de mesure par une liaison vertio à haute fréquence

Country Status (4)

Country Link
EP (1) EP0596240B1 (fr)
DE (2) DE4236923A1 (fr)
ES (1) ES2148196T3 (fr)
GR (1) GR3034333T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2290631B (en) * 1994-06-24 1998-11-11 Fuji Heavy Ind Ltd Diagnosis system for motor vehicle and the method thereof
DE19523352C1 (de) * 1995-06-27 1996-10-10 Reinhausen Maschf Scheubeck Anordnung zur Stromüberwachung
DE19602817A1 (de) * 1996-01-26 1997-07-31 Bayerische Motoren Werke Ag Fahrzeug mit einem mobilen Transponder
DE19650047A1 (de) * 1996-12-03 1998-06-04 Bayerische Motoren Werke Ag Verfahren zum Übermitteln von Fahrzeugdaten zu einer Fahrzeug-Service-Station sowie Vorrichtung zur Durchführung des Verfahrens
DE19715632A1 (de) * 1997-04-15 1998-10-22 Broeder Marie Luise Meßwertübertragung elektrischer Größen durch Funksignal
DE102018133208A1 (de) * 2018-12-20 2020-06-25 FUSS-EMV-Ing. Max Fuss GmbH & Co. KG Messeinrichtung zur Bestimmung von emittierten Störspannungen und Störströmen in elektrischen Leitungen und in der Umgebungsluft

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2059263C3 (de) * 1970-12-02 1975-05-07 Siemens Ag, 1000 Berlin Und 8000 Muenchen Anordnung zur Fernübertragung bzw. Fernanzeige der Untersuchungswerte zu untersuchender Personen
DE2233797C3 (de) * 1972-07-10 1981-04-02 Alois Zettler Elektrotechnische Fabrik GmbH, 8000 München Nachrichtensystem für Krankenhäuser
DE3538687A1 (de) * 1985-10-31 1987-05-07 Bosch Gmbh Robert Testeinrichtung

Also Published As

Publication number Publication date
DE59310063D1 (de) 2000-07-27
GR3034333T3 (en) 2000-12-29
DE4236923A1 (de) 1994-05-05
ES2148196T3 (es) 2000-10-16
EP0596240A1 (fr) 1994-05-11

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