EP0568938B1 - Verfahren zur Herstellung einer störungsfreien Funkverbindung - Google Patents

Verfahren zur Herstellung einer störungsfreien Funkverbindung Download PDF

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Publication number
EP0568938B1
EP0568938B1 EP93107065A EP93107065A EP0568938B1 EP 0568938 B1 EP0568938 B1 EP 0568938B1 EP 93107065 A EP93107065 A EP 93107065A EP 93107065 A EP93107065 A EP 93107065A EP 0568938 B1 EP0568938 B1 EP 0568938B1
Authority
EP
European Patent Office
Prior art keywords
receiver
transmitter
signal
channel
frequency
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
EP93107065A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0568938A1 (de
Inventor
Thomas Burchard
Wolfgang Bredow
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.)
NBB Controls and Components AG
Original Assignee
NBB Nachrichtentechnik GmbH 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 NBB Nachrichtentechnik GmbH and Co KG filed Critical NBB Nachrichtentechnik GmbH and Co KG
Publication of EP0568938A1 publication Critical patent/EP0568938A1/de
Application granted granted Critical
Publication of EP0568938B1 publication Critical patent/EP0568938B1/de
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
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link

Definitions

  • the invention relates to a method according to the preamble of patent claim 1.
  • DE-A-38 13 820 shows a system for transmitting control commands by means of an HF transmission / reception system.
  • telegrams For the transmission of the commands, so-called telegrams are used which, in addition to the actual control commands for the machine to be controlled, contain a unique assignment feature (address), through the evaluation of which the receiver is able to determine whether the telegrams come from the sender assigned to them or Not.
  • These telegrams are generated in the remote control transmitter by a corresponding electronic circuit (encoder) and modulated onto the RF signal generated by the RF transmitter (usually frequency modulation).
  • the receiver receives this modulated RF signal with the aid of an RF receiver, which in turn emits the original data telegram to the decoder unit (s) after demodulation, which then provides the desired control signal for the machine to be controlled.
  • the basic principle here is that the control commands may only be passed on to the machine if the address information obtained from the telegram matches the address information programmed in the remote control receiver.
  • each of the RF channels must be examined by the receiver to determine whether or not their own transmitter is transmitting there; this means that the receiver must always wait for the response from the telegram decoder before it can check the next channel during a channel search. This usually takes a long time, since it can only be assumed after a certain period of time that the negative answer the telegram decoder is based on the fact that no telegram or a non-system telegram was received.
  • the object of the invention is to improve the previously known method so that the channel searches are accelerated by the receiver.
  • the Sqelch signal which is usually available in the standard components from which HF receivers are constructed, is evaluated as quick information for initiating further switching operations. It is assumed that the Sqelch signal serves as general "occupancy information" for the RF channel currently set by the receiver, i.e. it provides information as to whether this channel is occupied or not. This information is initially completely sufficient for many operating modes and switching operations in order to initiate the next procedural step, because if, for example, the Sqelch signal indicates that the channel is not occupied at all by radio frequency, then this cannot be an RF channel occupied by one's own transmitter without an evaluation of the telegram address in the receiver.
  • the transmitter S shown in FIG. 1 consists of the high-frequency transmitting part HFS, the high-frequency channel of which can be selected by the user via a programming logic P.
  • the receiver R first consists in a known manner of the actual receiving part HFR and the downstream telegram decoder DEC, the output signal S of which triggers the desired function of the controlled machine.
  • the Sqelch output of the receiving part HFR and the address output of the address decoder DEC are connected to a scanning circuit SCAN, which in turn can switch the receiving channel of the receiving unit HFR via a control line CH.
  • the basic function of the scanning circuit SCAN consists in the preferred evaluation of the squelch signal on the line SQ and only then in the evaluation of the information "address is correct" on the address feedback line ADR from the address decoder DEC.
  • the scanning circuit SCAN switches the channel by one channel via the control line CH if the circuit is to carry out the function "receiver looking for transmitter channel” or if it causes it Feedback information to the sender if the receiver is to perform the function "Receiver searches for a free channel", since the absence of the Sqelch signal just signals the presence of a free channel.
  • the two operating modes outlined in FIGS. 2 and 3 can also be used in combination in the same transmitter / receiver unit if simple additional circuitry means (for example a switch) ensure that the channel switching through the scanning circuit SCAN occurs once when the squelch is present. Signals (squelch level high), which is carried out another time when the squelch signal (squelch level low) is not present.
  • simple additional circuitry means for example a switch
  • the operating mode according to FIG. 3 (receiver is looking for a free channel) can be implemented in different "comfort levels":
  • the feedback information from the receiver to the transmitter consists in activating a display means (for example a lamp) in the transmitter which informs the operator of the transmitter whether the receiver has now found a free channel; then the operator must switch the transmitter by means of the channel selector until the transmitter has found the free channel defined by the receiver, which is determined by the address check in the receiver. In this case, the return information to the transmitter is then changed (for example the lamp is switched off) in such a way that the operator knows that the actual transmission mode (transmission of control commands) can now begin.
  • a display means for example a lamp
  • a much more comfortable, but also technically more complex version is to design the feedback information of the receiver to the transmitter so that the frequency of the channel determined as free (or a corresponding coded information) is also communicated to the transmitter and then the transmitter automatically the transmission channel according to this information.
  • the feedback to the "transmitter” can, for. B. done in that the transmitter is also equipped with a monitor RF receiving part, which searches for the feedback signal of the "receiver” by a scanner device, as described above, and engages thereon.
  • Both variants of the operating mode according to FIG. 3 naturally require more or less complex transmitter units at the receiver or receiver units at the transmitter in order to enable the feedback path.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transceivers (AREA)
  • Selective Calling Equipment (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Peptides Or Proteins (AREA)
  • Circuits Of Receivers In General (AREA)
EP93107065A 1992-05-02 1993-04-30 Verfahren zur Herstellung einer störungsfreien Funkverbindung Expired - Lifetime EP0568938B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4214627A DE4214627C1 (de) 1992-05-02 1992-05-02 Verfahren zur Kanalabfrage durch den Empfänger einer Fernwirkanlage
DE4214627 1992-05-02

Publications (2)

Publication Number Publication Date
EP0568938A1 EP0568938A1 (de) 1993-11-10
EP0568938B1 true EP0568938B1 (de) 1997-10-15

Family

ID=6458070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93107065A Expired - Lifetime EP0568938B1 (de) 1992-05-02 1993-04-30 Verfahren zur Herstellung einer störungsfreien Funkverbindung

Country Status (7)

Country Link
EP (1) EP0568938B1 (enrdf_load_stackoverflow)
JP (1) JPH0698375A (enrdf_load_stackoverflow)
AT (1) ATE159368T1 (enrdf_load_stackoverflow)
AU (1) AU3832193A (enrdf_load_stackoverflow)
CA (1) CA2095283A1 (enrdf_load_stackoverflow)
DE (2) DE4214627C1 (enrdf_load_stackoverflow)
TW (1) TW238445B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9593000B2 (en) 2012-03-19 2017-03-14 Gray Manufacturing Company, Inc. Wireless vehicle lift system with enhanced electronic controls

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19502839C1 (de) * 1995-01-30 1996-06-05 Wolfgang Dipl Ing Brendel Empfangseinrichtung für eine Funk-Fernsteueranlage
DE19705502B4 (de) * 1997-02-13 2009-11-05 Wolfgang Brendel Funkfernsteueranlage
AU763156B2 (en) * 1998-05-11 2003-07-17 Robert Bosch Gmbh A system and method of communication
US6634461B1 (en) 2002-06-10 2003-10-21 Gray Automotive Products, Inc. Coordinated lift system
US7219770B2 (en) 2003-08-01 2007-05-22 Baker William J Coordinated lift system with user selectable RF channels
DE102005056933A1 (de) * 2005-11-29 2007-05-31 Prof. Dr. Horst Ziegler und Partner GbR (vertretungsberechtigter Gesellschafter: Prof. Dr. Horst Ziegler 33100 Paderborn) Funkübertragungssystem

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010068C2 (de) * 1980-03-15 1986-12-18 Fried. Krupp Gmbh, 4300 Essen Verfahren und Anordnung zur Datenübertragung mittels elektromagnetischer Strahlung mit aufmodulierter Dateninformation
DE3037265C2 (de) * 1980-10-02 1989-08-10 Multiplex Elektronik GmbH, 7532 Niefern-Öschelbronn Sendegerät zur Hochfrequenz-Informationsübermittlung
BE894768A (fr) * 1982-10-21 1983-02-14 Theimeg Elektronikgerate G M B Systeme pour la transmission preferentielle de telegrammes d'ordres pourvus chacun d'une adresse en multiplexage par repartition dans le temps sur une frequence porteuse
BE894769A (fr) * 1982-10-21 1983-02-14 Theimeg Elektronikgerate G M B Systeme pour la transmission de telegrammes d'ordres de postes transmetteurs differents a des postes recepteurs differents sur le meme canal de transmission
DE3813820A1 (de) * 1988-04-22 1988-09-29 Brendel Wolfgang Dipl El Ing Funk-fernwirkanlage und verfahren zum betreiben derselben

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9593000B2 (en) 2012-03-19 2017-03-14 Gray Manufacturing Company, Inc. Wireless vehicle lift system with enhanced electronic controls

Also Published As

Publication number Publication date
CA2095283A1 (en) 1993-11-03
ATE159368T1 (de) 1997-11-15
DE59307526D1 (de) 1997-11-20
AU3832193A (en) 1993-11-04
EP0568938A1 (de) 1993-11-10
JPH0698375A (ja) 1994-04-08
DE4214627C1 (de) 1993-12-09
TW238445B (enrdf_load_stackoverflow) 1995-01-11

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