EP0767943B1 - Datenfernerfassungssystem - Google Patents

Datenfernerfassungssystem Download PDF

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Publication number
EP0767943B1
EP0767943B1 EP95921755A EP95921755A EP0767943B1 EP 0767943 B1 EP0767943 B1 EP 0767943B1 EP 95921755 A EP95921755 A EP 95921755A EP 95921755 A EP95921755 A EP 95921755A EP 0767943 B1 EP0767943 B1 EP 0767943B1
Authority
EP
European Patent Office
Prior art keywords
aerial
acquisition system
remote data
antenna
line
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
EP95921755A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0767943A1 (de
Inventor
Horst Ziegler
Horst Behlen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0767943A1 publication Critical patent/EP0767943A1/de
Application granted granted Critical
Publication of EP0767943B1 publication Critical patent/EP0767943B1/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 remote data acquisition system, in particular for determining consumption in buildings, according to the preamble of claim 1.
  • the transmission conditions (Shadows, reflections) for the different Measuring units are very different. This is in buildings e.g. B. by between each measuring unit and receiving antenna due to lying walls. Even changeable Reflections and diffractions on fixed and moving ones Objects lead to the security of data transmission impairing multiple reception. A you could make some improvement here achieve that the transmit antennas and receive antennas carefully plans what complex measurements in practice and make adjustments on site to a very high rate of more than 99% correct data transmission from the measuring units to the evaluation unit ensure. An increase in the security of data transmission could also be done by increasing the transmission power guarantee, but on the one hand they are Licensing regulations for radio transmission links and on the other hand the limited capacity of those in the Transmitters used batteries counter.
  • the present invention is therefore intended to provide a remote data acquisition system according to the preamble of the claim 1 so that even with very different Transfer conditions between different Groups of measuring units and a single receiving antenna secure data transmission is guaranteed, without being driven by a high level of equipment should be.
  • the remote data acquisition system you have a variety of predetermined ones in the building Building areas distributed antenna segments, each receive the transmission signals from neighboring measuring units.
  • the Transmitting signals from more distant measuring units e.g. from floors above or below
  • the antenna segments are on a common antenna line connected and the Output signals of the different antenna segments are added up on the antenna line and on the receiving electronics given. So this also needs a lot large buildings to be provided only once which is advantageous in view of their high cost.
  • the antenna line can be a radio frequency cable be like it as a standard television antenna cable is known.
  • the antenna signals are in this cable preferably via an impedance converter, but without Demodulation fed.
  • the development of the invention according to claim 3 is in terms of keeping power dissipation small and in terms of avoiding reflections an advantage on the antenna line.
  • the training according to claim 5 is also in view to low signal losses on the antenna line from Advantage.
  • 10-1-1 to 10-1-x (1) measuring units referred to that on the first floor of a building are installed at various points of consumption. Typical such consumption points are radiators and Hot water meter. x (1) should be for the last measuring unit stand on the first floor.
  • Each of the measuring units contains (not in the drawing explicitly shown) a measuring sensor, the z. B. a Temperature sensor with a downstream integrator can be transmitter electronics and an antenna 12.
  • the structure of the measuring units 10 and the supply of their Antenna 12 can take place in each case as in WO-A-94 / 03882 described in detail.
  • each set of measuring units 10-1 to 10-n is on an antenna unit on the floor, preferably in the stairwell 14-1 to 14-n are provided.
  • the antenna unit 14-n the other antenna units have the same structure.
  • the antenna unit 14-n has a receiving antenna 6. via an active coupling unit, denoted overall by 18 and a T-piece 20 to one of the antenna units common antenna line 22 is connected.
  • the antenna line 22 is an RF coaxial cable, such as it is commonly used as a television antenna cable becomes.
  • the free end of the antenna line 22 is through a terminating resistor designated overall by 24 completed, the resistance value of the wave resistance corresponds to the antenna line 22.
  • an LC coupling network 26 is provided, that compensates for the additional capacity.
  • the receiving antenna 16 via a a total of 28 designated foot resistance with the Shielding of the antenna line 22 connected and the antenna signal is via an amplifier stage 30 to the Inner conductor of the antenna line 22 given.
  • the conditions are chosen as a whole (compare the dimensioning examples given in the drawing), that you get an internal resistance of the active antenna, that goes towards infinity.
  • an internal resistance of the antenna unit of about 5000 Ohm, that's how you get in a building with 10 floors a total resistance of 500 ohms, which as Loss load parallel to half the characteristic impedance of 37.5 ohms is added.
  • the reduced load resistance for the active antennas only drop to 35 ohms, which corresponds to an additional attenuation of 0.6 dB.
  • a total 32 designated receiving electronics connected. This has an input network 34, which again has the characteristic impedance corresponds to the antenna line 22, and a downstream preamplifier stage 36.
  • the inner conductor the antenna line 22 in direct current with a direct current supply voltage VB acted upon during the Outer conductor is connected to ground GND.
  • the output signal of the preamplifier stage 36 becomes a Input of an evaluation unit designated 38 in total given, which can have a structure similar to the individual the evaluation unit described in WO-A-94/03882 (Reference 16 there).
  • the evaluation unit 38 demodulates the different ones Signals obtained via the antenna line 22 are eliminated signals that are not correctly recognized the correctly transmitted data and enters them in larger intervals, e.g. B. via a TEMEX card 40 on a telephone line 42 to which a billing computer is connected to a billing company.
  • the antenna units 14 used for this have simple structure and are therefore inexpensive.
  • the expensive one Receiving electronics and the expensive evaluation unit 38 only need to be provided once.
  • the special design of the antenna unit 14 is guaranteed, that only a small part of that of one Power output in other antenna units get lost. This is due to, that the antenna units are high impedance and both an impedance conversion as well as a gain accomplish.
  • the antenna units can be designed in this way be that the entire coupling unit 18 as a unit can be installed in a flush-mounted box.
  • the associated Antenna 14 can then on this coupling unit in front of appropriate building wall arranged or in the plaster this wall can be installed embedded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Selective Calling Equipment (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Mobile Radio Communication Systems (AREA)
EP95921755A 1994-06-25 1995-05-25 Datenfernerfassungssystem Expired - Lifetime EP0767943B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4422281A DE4422281C1 (de) 1994-06-25 1994-06-25 Datenfernerfassungssystem
DE4422281 1994-06-25
PCT/EP1995/001983 WO1996000431A1 (de) 1994-06-25 1995-05-25 Datenfernerfassungssystem

Publications (2)

Publication Number Publication Date
EP0767943A1 EP0767943A1 (de) 1997-04-16
EP0767943B1 true EP0767943B1 (de) 1998-09-09

Family

ID=6521507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95921755A Expired - Lifetime EP0767943B1 (de) 1994-06-25 1995-05-25 Datenfernerfassungssystem

Country Status (10)

Country Link
EP (1) EP0767943B1 (pl)
AT (1) ATE171001T1 (pl)
CZ (1) CZ286134B6 (pl)
DE (2) DE4422281C1 (pl)
DK (1) DK0767943T3 (pl)
ES (1) ES2123990T3 (pl)
HU (1) HU222646B1 (pl)
PL (1) PL177942B1 (pl)
SK (1) SK282574B6 (pl)
WO (1) WO1996000431A1 (pl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19838912A1 (de) * 1998-08-27 2000-03-02 Bosch Gmbh Robert Modul
DE19954579C5 (de) * 1999-11-12 2008-09-11 Techem Energy Services Gmbh Vorrichtung zur Erfassung des Energieverbrauchs einer Heizungsanlage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5411822Y2 (pl) * 1972-04-01 1979-05-25
DE3221505A1 (de) * 1982-06-07 1983-12-08 Wolfgang Dr.-Ing. 8740 Bad Neustadt Volkrodt Messanordnung fuer haushaltenergieverbrauch
DE3419344C2 (de) * 1984-05-24 1994-06-16 Deutsche Aerospace Interferometerpeilantennenanordnung
CH682352A5 (en) * 1991-02-18 1993-08-31 Sc Techn Dipl Ing Peter A Neuk Transponder interrogation equipment for remote monitoring system - uses successively switched antenna elements spaced along coaxial cable coupled to base station providing HF interrogation signal
DE4225042C2 (de) * 1992-07-29 1996-10-17 Ziegler Horst Verfahren zum Übertragen von Verbrauchs-Meßdaten

Also Published As

Publication number Publication date
DE4422281C1 (de) 1996-02-01
SK167096A3 (en) 1997-11-05
PL317534A1 (en) 1997-04-14
CZ381896A3 (en) 1997-08-13
SK282574B6 (sk) 2002-10-08
WO1996000431A1 (de) 1996-01-04
HU9603422D0 (en) 1997-02-28
PL177942B1 (pl) 2000-02-29
CZ286134B6 (cs) 2000-01-12
DK0767943T3 (da) 1999-06-07
EP0767943A1 (de) 1997-04-16
ES2123990T3 (es) 1999-01-16
DE59503535D1 (de) 1998-10-15
HUT76883A (en) 1997-12-29
HU222646B1 (hu) 2003-09-29
ATE171001T1 (de) 1998-09-15

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