EP2041901A1 - Système de commande radio - Google Patents

Système de commande radio

Info

Publication number
EP2041901A1
EP2041901A1 EP07725912A EP07725912A EP2041901A1 EP 2041901 A1 EP2041901 A1 EP 2041901A1 EP 07725912 A EP07725912 A EP 07725912A EP 07725912 A EP07725912 A EP 07725912A EP 2041901 A1 EP2041901 A1 EP 2041901A1
Authority
EP
European Patent Office
Prior art keywords
sensor
radio
transmission
base station
control system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07725912A
Other languages
German (de)
English (en)
Inventor
Hans-Jörg KÖRBER
Housam Wattar
Bernd Kärcher
Gerd Scholl
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.)
Festo SE and Co KG
Original Assignee
Festo SE and Co KG
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 Festo SE and Co KG filed Critical Festo SE and Co KG
Publication of EP2041901A1 publication Critical patent/EP2041901A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2615—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using hybrid frequency-time division multiple access [FDMA-TDMA]

Definitions

  • the invention relates to a radio control system comprising a base station having at least one radio transceiver and a microcontroller and having a plurality of sensor / actuator modules each containing a radio transceiver enabling wireless data transmission with the at least one radio transceiver of the base station, and means for transmission of time-shifted data blocks (TDMA transmission).
  • a base station having at least one radio transceiver and a microcontroller and having a plurality of sensor / actuator modules each containing a radio transceiver enabling wireless data transmission with the at least one radio transceiver of the base station, and means for transmission of time-shifted data blocks (TDMA transmission).
  • TDMA transmission time-shifted data blocks
  • TDMA data transmission method which is also referred to as a time slot method, transmits data blocks in succession from the subscribers to the base station in a fixed time frame, wherein the subscribers can be sensor modules, actuator modules or combined modules.
  • the drawback of the known method is that with a very large number of subscriber modules communicating with the base station, the data transmission becomes slower and slower, and in the case of a large number of data blocks to be transferred one after the other, incorrect transmissions can also occur which reduce transmission reliability overall.
  • An object of the present invention is to provide a radio control system of the type mentioned create a faster transmission speed with increased transmission reliability.
  • An important advantage of the invention is that a faster data transmission is possible by combining the data transmission by means of different frequencies (FDMA method) with the time-shifted data transmission method (TDMA transmission) with a significantly larger number of subscribers.
  • FDMA method data transmission by means of different frequencies
  • TDMA transmission time-shifted data transmission method
  • an optimal compromise between a required transmission reliability and a fast data transmission can be selected by making one or the other method more widely used.
  • the radio control system according to the invention enables variable scalability while maintaining given real-time conditions. A wiring effort is virtually eliminated, even with a very large number of sensor / actuator modules, with changes in the data transmission method to individual modules or the change in the number of modules is not a problem, since the microcontroller in the base station only needs to be reprogrammed accordingly.
  • all sensor / actuator modules each operating at the same transmission frequency, designed for the transmission of time-shifted data blocks (TDMA transmission) with this transmission frequency.
  • the microcontroller of the base station is designed at least for controlling the data transmission, in particular for programming the data transmission with respect to the number and execution variably selectable sensor / actuator modules. This makes it easy to optimize the radio control system depending on the specifications of transmission speed and transmission reliability.
  • Each sensor / actuator module zeck Motherlay has its own microcontroller, which is designed for communication with the microcontroller of the base station via the radio transceiver.
  • the microcontrollers of at least part of the sensor / actuator modules advantageously have a plurality of connections for sensors and / or actuators, as a result of which the number of sensors and actuators integrated into the radio control system can be further increased.
  • the microcontroller of the sensor / actuator modules can be suitably programmed via an interface or by radio from the base station.
  • the microcontroller of the base station for forming request signals and / or control signals is formed in each case for all sensor / actuator modules of a transmission frequency, wherein the microcontroller of each of these sensor / actuator modules at at least one connected actuator the control signals on this fürlei- and in at least one connected sensor, the transmission of sensor data in a fixed time frame (TDMA transmission) triggers.
  • TDMA transmission fixed time frame
  • At least a part of the sensor / actuator modules has a self-sufficient power supply, in particular by solar modules or mechanical-electrical converter.
  • the base station expediently has a bus interface for connecting the microcontroller to an external data bus, which is in particular connected to an external control center.
  • a wireless bus connection with the external control unit is also possible.
  • the base station has a modular design with a freely selectable number of Funktranscei- vern, in order to make a simple and quick adjustment even with changing circumstances of the entire radio control system can.
  • differently acting antennas may also be expediently provided, in particular antennas with different polarization. This contributes to further data transmission security.
  • Figure 1 is a schematic representation of a base station, which interacts wirelessly with three groups of sensor / actuator modules with different transmission frequencies and
  • Figure 2 is a more detailed representation of a sensor / actuator module.
  • the base station 10 illustrated in FIG. 1 contains a microcontroller 11 for controlling and monitoring the wireless data transmission from and to the three groups 12, 13, 14 of sensor / actuator modules 15.
  • the microcontroller 11 is provided with three radio transceivers 16 to 18 connected, which operate with different transmission frequencies fl, f2 and f3. These may be commercially available narrowband radio transceivers. Typical frequency bands for this purpose are, for example, the ISM bands at 2.45 GHz and 5.8 GHz or 315 MHz, 433 MHz and 869 MHz.
  • the radio transceivers 16 to 18 are each provided with antennas 19 to 21.
  • the microcontroller 11 is further provided with a bus interface
  • microcontroller 11 can be programmed and parameterized, with data also being transmitted and transmitted.
  • This may be, for example, the Profibus or the Ethernet bus.
  • An Ethernet interface or, in general, the bus interface 22 can also be used in the microcontroller 11.
  • a wireless data bus for wireless data transmission between microcontroller 11 and external control center may be provided.
  • a voltage source 24 supplies the electrical components o in the base station 10 with the required operating voltage.
  • This voltage source 24 can be connected to an external power supply. 25 or the base station 10 has a self-sufficient power supply, such as a solar cell array or a mechanical-electrical converter, for the conversion of frequencies, pressure fluctuations or movements in an electrical voltage.
  • FIG. 2 shows a sensor / actuator module 15 in greater detail. Depending on whether one or more sensors or one or more actuators are connected, this can be a pure sensor module, a pure actuator module or a mixed module. In Figure 2, the execution is shown as a mixed module.
  • a microcontroller 26 contained in the sensor / actuator module 15 is connected to an actuator 27 for controlling the same and a sensor 28 for polling sensor data.
  • the number of connected actuators or sensors is of course not limited to two, but may vary.
  • Two further inputs 29, 30 of the microcontroller 26 may be, for example, an RS232 interface or a digital input connection. In this way, the microcontroller 26 can be programmed, for example, whereby a wireless programming via the microcontroller 11 of the base station 10 is possible.
  • the microcontroller 26 is furthermore connected to a radio transceiver 31, which may be identical to the radio transceivers 26, 28 or may also have a different structure.
  • This radio transceiver 31 has an antenna 32 for data communication with the base station 10.
  • the sensor / actuator module has a solar cell arrangement 33, which is connected via a supply module 34 to the electrical components of the sensor / actuator module 15.
  • This supply module 34 contains, for example, an electrical storage arrangement, For example, a capacitor or a battery and may also include an arrangement for voltage stabilization or voltage adjustment.
  • a self-sufficient power supply can also follow via an electrical-mechanical converter, as has already been explained in connection with the base station 10. The mechanical energy, he can refer, for example, from the actuator 27. If a wired power supply can be realized, of course, such a place in place of the self-sufficient power supply lo, or the individual sensor / actuator modules have in part a self-sufficient power supply and partly a wired power supply.
  • the number of groups 12 to 14 of sensor / actuator modules 15 of course depends on the number of radio transceivers 16 i5 to 18 in the base station 10, this number being almost arbitrarily selectable.
  • the base station 10 has a modular structure, so that even later radio transceivers with different or additional frequencies can be added. It also radio transceivers with the same
  • the number of sensor / actuator modules 15 per group is also freely selectable,
  • the microcontroller 11 in the base station 10 can be programmed or reprogrammed accordingly.
  • the data transmission from radio transceivers 16 to 18 with different frequencies or differently polarized antennas can take place simultaneously in the so-called FDMA method (Frequency Division Multiple Access).
  • FDMA method Frequency Division Multiple Access
  • the data transmission between a radio transceiver 16 or 17 or 18 and a group of sensor / actuator modules 15 takes place at the same transmission frequency via the so-called TDMA method (Time Division Multiple Access).
  • This TDMA method is also referred to as a time slot method and is based on the consecutive transmission of data packets in a fixed time frame.
  • the microcontroller 26 of the sensor / actuator modules 15 are programmed accordingly and wait for a request signal from the base station 10 in order then to transmit data i5 to the base station in a specific time window, for example sensor data. This can be done immediately or after staggered time intervals, each sensor / actuator module 15 of a group being set to a different time interval.
  • the control data for the connected actuators 27 are provided by the base station 10
  • each sensor / actuator module 15 has a corresponding identifier that identifies the received control signal as appropriate or as irrelevant or the transmission also takes place in time intervals.
  • the user Due to the adaptability of the radio control system to specific application requirements in connection with the modular principle, the user has the option of freely choosing the number of groups 12 to 14 and the number of sensor / actuator modules 15 per group Extreme case the
  • 3o base station 10 has many radio transceivers 16 to 18 and each communicates with only one sensor / actuator module 15, while in the other extreme case, the base station 10 only very has few radio transceivers 16 to 18 and each communicates with a very large number of sensor / actuator modules 15 in the TDMA method.
  • the microcontroller 11, 26 in the base station 10 and in the sensor / actuator modules 15 are connected directly to the radio transceivers 16 to 18 and 31, respectively. It is also possible for the radio transceivers 16 to 18 or 31 to have their own logic and control functions, so that a distributed logic is present within the components.
  • a radio transceiver 16 to 18 or 31 can be understood to mean a pure analog high-frequency signal processing unit with or without A / D or D / A converter or a complete transceiver including processor. Gradations are possible here.
  • MIMO architectures can also be used to increase robustness.
  • For the same purpose or to increase the coexistence capability with other radio systems can be used as a radio transceiver and ultra-wideband technologies.
  • the radio transceiver or radio transceiver / logic units of the base station 10 can be arranged directly next to one another, for example on a DIN rail or a common base board. However, it is also possible a spatially separated arrangement. If they are operated directly next to each other, then it is favorable if the antennas 19 to 21 have a minimum distance of ⁇ / 10, even better a distance in the range of ⁇ / 4 to 3 ⁇ / 4, so that dips in the transmission of a sensor - / Actuator module 15 can be intercepted to a radio transceiver 16 to 18 of the base station 10 by adjacent radio transceiver. Are the radio transceivers terminated? are operated from each other, they can be connected to each other via radio or cable.
  • radio intermediate stations positioned in between can also be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

La présente invention concerne un système de commande radio avec une station de base (10) comportant au moins un émetteur-récepteur radio (16 à 18) et une microcommande (11) et avec plusieurs modules de capteurs/activateurs (15) qui contiennent leur propre émetteur-récepteur radio permettant une transmission de données sans fil avec le ou les émetteurs-récepteurs radio (16 à 18) de la station de base (10). Le système comprend également des moyens de transmission de blocs de données décalés dans le temps (transmission DTMA). La station de base (10) comporte plusieurs émetteurs-récepteurs radio (16 à 18) qui fonctionnent à des fréquences de transmission (f1 à f3) différentes. Les émetteurs-récepteurs radio des modules de capteurs/activateurs (15) fonctionnent chacun avec l'une de ces fréquences de transmission (f1 à f3). Cela permet une disposition variable et une optimisation du système de commande radio selon chaque besoin concernant la sécurité ou la vitesse de transmission.
EP07725912A 2006-07-13 2007-06-08 Système de commande radio Withdrawn EP2041901A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610032354 DE102006032354A1 (de) 2006-07-13 2006-07-13 Funk-Steuerungssystem
PCT/EP2007/005071 WO2008006428A1 (fr) 2006-07-13 2007-06-08 Système de commande radio

Publications (1)

Publication Number Publication Date
EP2041901A1 true EP2041901A1 (fr) 2009-04-01

Family

ID=38461228

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07725912A Withdrawn EP2041901A1 (fr) 2006-07-13 2007-06-08 Système de commande radio

Country Status (4)

Country Link
EP (1) EP2041901A1 (fr)
CN (1) CN101490989A (fr)
DE (1) DE102006032354A1 (fr)
WO (1) WO2008006428A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009019640B4 (de) * 2009-04-30 2020-01-16 Volkswagen Ag Verfahren, Vorrichtung und System zur Herstellung eines Schlüssels für ein Fahrzeug sowie Verfahren und Vorrichtung zur Erzeugung einer Fräsinformation zur Herstellung eines Schlüssels
DE102011001935A1 (de) 2010-04-17 2011-10-20 Christoph Seifarth Funkempfänger mit optischer Mehrkanal-Multisignal-Korrelation
US8552857B2 (en) * 2010-10-14 2013-10-08 Honeywell International Inc. Failsafe signal transmission for wireless sensor mesh
US11503465B2 (en) 2019-02-20 2022-11-15 Coretigo Ltd. Secure pairing mechanism in a wireless communication system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1243990B1 (fr) * 2001-03-21 2013-10-23 ABB Research Ltd. Système de commande/guidage avec une commande programmable et une pluralite d'actuateurs et/ou capteurs et/ou des unités entrée et/ou des unités sortie et/ou des unités entrée/sortie
DE10153462B4 (de) * 2001-04-20 2014-07-31 Abb Research Ltd. Verfahren zum Betrieb eines Systems mit mehreren Knoten und einer Basisstation gemäß TDMA
DE10334873A1 (de) * 2002-08-17 2004-02-26 Abb Research Ltd. Verfahren zum Betrieb eines Systems mit einer Vielzahl Knoten und einer Basisstation gemäß TDMA und System hierzu
US7450538B2 (en) * 2002-08-17 2008-11-11 Abb Research Ltd Method for operating a system with a multiplicity of nodes and a base station according to TDMA and a system for this purpose
DE102005032873A1 (de) * 2005-07-14 2007-01-25 Abb Patent Gmbh Basisstation eines gemäß TDMA (Time Division Multiple Access) betriebenen Kommunikationssystems

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008006428A1 *

Also Published As

Publication number Publication date
CN101490989A (zh) 2009-07-22
DE102006032354A1 (de) 2008-01-17
WO2008006428A1 (fr) 2008-01-17

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