EP1368621A2 - Compteur a gaz - Google Patents

Compteur a gaz

Info

Publication number
EP1368621A2
EP1368621A2 EP02727191A EP02727191A EP1368621A2 EP 1368621 A2 EP1368621 A2 EP 1368621A2 EP 02727191 A EP02727191 A EP 02727191A EP 02727191 A EP02727191 A EP 02727191A EP 1368621 A2 EP1368621 A2 EP 1368621A2
Authority
EP
European Patent Office
Prior art keywords
gas meter
counting
gas
counter
chip
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Withdrawn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
EP02727191A
Other languages
German (de)
English (en)
Inventor
Ralf Schneiderat
Raymond Richards
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.)
Inotech GmbH
Original Assignee
Inotech GmbH
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 Inotech GmbH filed Critical Inotech GmbH
Publication of EP1368621A2 publication Critical patent/EP1368621A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/06—Indicating or recording devices
    • G01F15/068—Indicating or recording devices with electrical means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/06—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission
    • G01F1/075—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission with magnetic or electromagnetic coupling to the indicating device
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/10—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission
    • G01F1/115—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission with magnetic or electromagnetic coupling to the indicating device

Definitions

  • the invention relates to a gas meter for measuring and standardized counting of a gas stream, the gas meter being coupled into the gas stream and comprising a volume detection device for mechanically determining the volume, a pressure sensor for detecting the pressure and a temperature sensor for detecting the temperature of the respective gas stream. wherein the volume detection device is operatively connected to at least one electronic counter.
  • a gas meter is a device with which the volume of gas released at a point can be determined by measuring the volume.
  • wet or dry gas meters can be used for this.
  • the measuring rooms are delimited by a liquid.
  • the dry gas meter such as the bellows gas meter or rotary piston gas meter
  • the measuring rooms are delimited by movable walls.
  • the gas meter only responds to the current volume output. A gas volume only results from the summation over time.
  • a gas meter of the type described in the opening paragraph is previously known from DE-OS 199 20 393 AI. It is a gas meter that can be coupled into a gas stream with a temperature sensor that detects the temperature of the gas stream, a pressure sensor that detects the pressure of the gas, and a volume corrector that is connected to the gas meter, the temperature sensor, and the pressure sensor.
  • the device has a mechanical counter.
  • a pulse generator preferably in the form of an electrical proximity switch, which delivers a pulse train, the frequency of which is proportional to the volume flow of the gas flow to be measured.
  • the frequency of the pulse train corresponds to the rotational frequency of a turbine wheel of a turbine gas meter (TRZ).
  • TRZ turbine gas meter
  • This pulse signal is sent to a volume corrector, which converts the number of pulses received into a value corresponding to the gas volume of the gas flow.
  • the measured pressure and the measured temperature of the gas are used to standardize the measurement result.
  • the volume determined by the volume corrector is converted into a meter progress of the gas meter.
  • the thus electronic counting is reading Delta for remote ⁇ and thus required for settlement of the counters.
  • a mechanical counter in such counters can not be dispensed with, since these are indispensable today due to the manipulation security and accuracy to be required and are therefore usually required by law.
  • the accuracy of the mechanical counters is usually limited to ⁇ only by the number of counter rollers, or by the resolution of the least significant counter reel.
  • a replacement meter must be installed on site at regular intervals during the test. There have been, therefore, conditions in recent years, various Anstren ⁇ to submit only the arranged in the high pressure range of the gas meter measuring cartridge testing. However, after the mechanical counters have been prescribed, a mechanical coupling between the measuring cartridge arranged in the high pressure area and the counter arranged for the purpose of reading in the atmospheric area is always required. If a measuring cartridge is replaced for testing, repair or maintenance purposes, the measuring cartridge must be uncoupled from the counter. It goes without saying that the coupling as such represents a possible source of error and therefore the testing and calibration of the measuring cartridge is generally not sufficient in itself, but that testing of the entire system with a connected measuring cartridge is required.
  • An alternative solution to the problem is to fully integrate the mechanical counter in the high-pressure part of the counter, so that a self-sufficient mechanical measuring cartridge is formed which can be removed and checked. On the one hand, this significantly reduces the effort required to replace this measuring part and, in addition, the calibration and calibration of the mechanical measuring mechanism can be restricted to the measuring cartridge.
  • the counting result is then displayed only via an additional parallel electronic counter, the electronic counter being understood as the volume corrector that evaluates the pulses of the mechanical measurement. In the case of differences between the electronic and the mechanical count, the mechanical counter is decisive.
  • a disadvantage of this solution is that the integrated mechanical counter for reading out the measurement result must still be removed for such checks.
  • a decisive obstacle in the effort to simplify the gas counting is basically that the actual gas counting takes place in the high pressure range, the respective measurement result having to be transferred to a reading range which is generally under atmospheric pressure.
  • the invention is therefore based on the object of avoiding the disadvantages of gas counting mentioned and of creating a gas meter which has a considerably simplified structure, lower test costs and at least constant error accuracy.
  • the object of the invention is achieved in that a complete electronic counter is integrated within the pressure range of a gas meter, without any possibility of influencing and manipulating from the outside provides an electronic counting result that is available for readout test purposes.
  • the electronic counter is provided with a storage element in which the energy of the pulses supplied by the sensors is sufficient to change the storage state.
  • the electronic counter delivers a counting result without any additional energy supply.
  • an electronic counter was not acceptable because it could not be predicted with absolute certainty how long the voltage supply to be integrated in the printing area would last. For this reason, it was previously justified to only allow mechanical counters for billing and testing purposes.
  • the gas meter can therefore be checked simply by opening the gas meter in question for test purposes and reading the integrated measuring cartridge in the stored counting result. Since the coupling of the measuring cartridge is not critical, it can also be sent with comparatively little effort. This is necessary, for example, in order to be able to carry out any official calibrations and tests on the measuring cartridge. The shipping of the pressure housing for testing purposes can be completely omitted.
  • the electronic counter can completely replace a mechanical counter provided for testing purposes or can be arranged for additional security. In a phase of transition, in particular statutory test regulations, it will be necessary to operate the mechanical counter next to the electronic counter.
  • both the electronic and the mechanical counter within a single measuring cartridge which is integrated in the pressure range of the gas meter.
  • the measuring cartridge comprising the electronic and mechanical counter can then be sent there for testing and / or calibration purposes.
  • Another advantage of the invention explained above could be that a measuring cartridge comprising the electronic counter can be retrofitted in existing gas meters.
  • the above invention relates to a complete electronic counter incl. Arranged within the pressure range of the gas meter. appropriate sensors. In order to enable the counting result to be read, it is necessary to provide an additional electronic or mechanical counter which enables the counting result to be read externally.
  • the novel electronic counter accordingly consists of an external and an internal part, the internal part advantageously being arranged on a single integrated circuit, the so-called counting chip, which is designed as a so-called Asic.
  • Counting chips lie in their universal applicability and in their extremely small dimensions. Another advantage of the design of the electronic counter as an integrated circuit is that a nondestructive manipulation of the circuit is hardly conceivable.
  • the counting chip is connected to contacts for connecting at least two pulse wires.
  • the pulse wires deliver the signals supplied by a pulse generator. At least two pulse wires are required to enable up / down counting or to be able to detect the direction of the pulses in connection with counting pulses.
  • Such pulse wires are magnetoresistive components that deliver electrical energy pulses from the change in a magnetic field.
  • this counter chip is provided with a connection for an external voltage supply.
  • the external power supply is not necessary for the permanent operation of the counter, but rather enables additional evaluations which are connected to the counting result integrated in the counting chip. Only for this it is necessary to be able to provide the counter chip with an external power supply.
  • the counting result as such is still generated and stored without additional energy consumption.
  • Such an application can consist, for example, in that a data interface, which is provided with appropriate communication hardware, is arranged on the counting chip. This data interface and the communication hardware can then be supplied via the external power supply.
  • the counting result is additionally provided with a data stamp which is withdrawn from external intervention and which preferably indicates the location and time of the measurement.
  • the gas meter is constructed such that an electronic counting chip is arranged within the pressure range, the pulse generator being connected to the mentioned counting chip, which has no external
  • Power supply shows a count result that is available for testing and billing purposes.
  • the electronic counter is connected to a volume corrector for producing a standardized counting result in a manner known per se.
  • This standardized counting result can be transmitted by electronic, optical or inductive coupling or radio transmission from the pressure range to the outside in the atmospheric range to an external display or for billing or remote reading.
  • a fully electronic gas meter is thus available, which contains a completely self-sufficient internal electronic counter and an additional electronic external counter.
  • the gas meter achieves a counting accuracy corresponding to today's generation of gas meters.
  • the counting chip can advantageously also be designed as an additional device which is placed on the gas meter as a plug-on pulse generator.
  • the new type of counting chip is by no means restricted to the gas meter area. Rather, the counting chip can be used wherever a sensor signal has to be converted into a counting result without further energy supply.
  • a non-manipulable mileage detection in the motor vehicle sector is mentioned here as an example application.
  • Such a counter chip is useful wherever on the one hand electronic pulses can be provided via pulse wires and on the other hand a permanent power supply to a counter is only possible under extremely difficult circumstances. The manipulation and interference immunity of such counters can also belong to these circumstances.
  • Fig. 2 is a block diagram of a count type
  • Fig. 3 shows a detailed representation of the structure of the counting chip.
  • Fig. 1 shows an injected into a gas stream 1 ⁇ gas meter 2.
  • gas meter 2 can be in the scope of the invention to any counting means for each emitted at the location of the gas meter 1 gas volume Han thine. Turbine radial gas meters, rotary piston gas meters or diaphragm gas meters come into consideration here, for example.
  • the gas meter 2 essentially consists of a volume detection device 4 arranged in the pressure area 3 of the gas meter 2, which as a result delivers pulses 5 proportional to the gas volume emitted in each case.
  • the gas meter 2 additionally comprises a temperature sensor 6 for detecting the temperature of the gas stream 1 and a sensor 7 for detecting the pressure of the gas stream 1.
  • the volume detection device 4 which is arranged in the pressure area and has a mechanical control counter and a pulse generator, not shown, supplies pulses 5.
  • the pulses 5 are transmitted to a counter chip 14.
  • the pulses 5 are used to supply the counting chip 14 and to process and store the received signals.
  • the respective counter reading of the counting chip 14 can be preset during installation and read out during operation via the externally supplied transmission and reception unit 12.
  • the gas meter 2 accordingly also includes transmission and reception unit 12, which is also not mentioned in the pressure area 3 and transmits the data to a volume corrector 10.
  • the volume corrector 10 is connected to a temperature and a pressure sensor 6 and 7 in order to detect the operating state of the gas flow to be counted and to carry out the conversion.
  • the signal and data processing carried out by means of the volume corrector 10 and the energy required for data transmission is ensured by an external energy supply 13.
  • the counting chip 14 can be arranged in connection with a mechanical counter (not shown further) within an integrated measuring cartridge 15 within the pressure range 3 of the gas meter 2.
  • the integrated measuring cartridge 15 can be used in existing gas meters in a simple manner, retrofitted and, if necessary, exchanged or exchanged for test purposes. This may be necessary, for example, for the calibration or calibration of the measuring cartridge 15.
  • the counting chip 14 integrated in the measuring cartridge 15 is shown in FIG. 2 as a block diagram.
  • the counting chip 14 is connected to the pulse generator of the volume detection device 4 via at least two pulse wires 16.
  • the pulses transmitted in this way also represent the energy supply for the counting chip 14.
  • a feromagnetic memory 17 is arranged on the same counting chip. As soon as the pulse wires 16 transmit a pulse 5, the energy transmitted with this pulse is sufficient to bring about a change in state of the memory element 17. In particular, a new counting result can be transferred to the memory element 17. After the new count result has been transmitted, the energy supply to the memory element 17 is switched off, the memory result being retained without further energy supply, as in the case of an EEPROM.
  • the counting chip 14 is further provided with a communication interface ⁇ point 18 for reading and setting parameters of the counting circuit connected.
  • the communication interface 18 is operated by means of a communication hardware 19, which is connectable to the ex ternal ⁇ voltage source 13 via a further supply interface 20th
  • the external voltage supply 13 is not required for the normal operation of the electronic counting chip 14. It is only required to operate the communication interface 18 in connection with the communication hardware 19.
  • Communication interface 18 can be required, for example, in order to read out the counting result stored in the memory 17 for billing and testing purposes or to carry out a parameterization or calibration of the counting chip 14.
  • the counting chip 14 is preferably an ASIC (application-specific integrated circuit), that is to say an application-specific integrated circuit.
  • ASIC application-specific integrated circuit
  • the counting chip 14 has at least two inputs connected to the pulse wires 16, which act on a 32-bit adder 22 via a special inverter circuit 21.
  • the 32-bit adder 22 is ultimately used to carry out the counting step, which is written into two 32-bit shift registers 24 and 24 ⁇ via a 32-bit bus 23.
  • the upper 32-bit shift register 24 holds the most significant bit (MSB) and the subsequent 32-bit shift register 24 ⁇ , the least significant least significant bit (LSB).
  • the shift registers 24, 24 ⁇ are therefore a digital counting result display in the dual code.
  • the counter chip 14 is provided with a BUS interface 25 and with a communication interface 18, which can be switched on and off via an analog switch 26, only for further additional evaluation circuits.
  • Gas meter 2 which is provided with an electronic counter, which is essentially represented by the counter chip 14.
  • an electronic counter result that cannot be influenced and which is available for readout, test, calibration or calibration purposes is produced without any additional power supply.
  • the counter chip 14 is ideally integrated in a measuring cartridge 15, it being possible for an additional electronic or mechanical counter to be provided, which, however, then requires an additional voltage supply.
  • This additional number is mainly used to display the counting result for the purpose of remote reading and billing.
  • the counting result can be compared with the result stored in the counting chip 14 for test purposes. For this it is only necessary to remove the integrated measuring cartridge 15 from the counting chip 14 and the counting result stored there after connection to an external one Read out the power supply.
  • the gas meter 2 according to the invention thus offers the advantage of not only a considerably simplified structure but also a considerably simplified testing and calibration methodology by dispensing with a mechanical coupling of the counter in order to lead the counting result from the pressure range to the atmospheric range.
  • Gas flow Gas meter Pressure range Volume detection device Pulses Temperature sensor Pressure sensor Volume conversion device Sending and receiving unit External power supply Counting chip Measuring cartridge Pulse wires Storage element Communication interface Communication hardware Supply interface Evaluator switch Adder BUS Shift register BUS interface Analog switch

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measuring Volume Flow (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

Le problème lié aux compteurs à gaz, notamment aux compteurs à gaz à soufflet industriels, aux compteurs à gaz à piston rotatif et aux compteurs à gaz à roue de turbine, est que lorsque l'on veut les contrôler et les étalonner, il faut la plupart du temps transporter le compteur complet, également avec des boîtiers sous pression, vers des installations de contrôle éloignées, en raison du découplage mécanique prescrit du résultat de comptage apparaissant dans la zone de pression du compteur à gaz. La mise en oeuvre d'une puce de comptage (14) d'un nouveau type, qui, alimentée uniquement au moyen des impulsions de comptage (5), sans alimentation électrique supplémentaire, produit un résultat de comptage enregistrable, permet d'utiliser un compteur électronique ou mécanique courant afin d'assurer l'affichage, la lecture à distance ou le décompte. Cette puce de comptage (14) est également utilisée afin d'enregistrer le résultat de comptage. Afin de contrôler et/ou d'extraire le résultat de comptage, ladite puce de comptage (14) est connectée à une alimentation électrique externe.
EP02727191A 2001-03-08 2002-03-06 Compteur a gaz Withdrawn EP1368621A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2001111147 DE10111147B4 (de) 2001-03-08 2001-03-08 Gaszähler
DE10111147 2001-03-08
PCT/DE2002/000791 WO2002073141A2 (fr) 2001-03-08 2002-03-06 Compteur a gaz

Publications (1)

Publication Number Publication Date
EP1368621A2 true EP1368621A2 (fr) 2003-12-10

Family

ID=7676724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02727191A Withdrawn EP1368621A2 (fr) 2001-03-08 2002-03-06 Compteur a gaz

Country Status (4)

Country Link
EP (1) EP1368621A2 (fr)
AU (1) AU2002257520A1 (fr)
DE (1) DE10111147B4 (fr)
WO (1) WO2002073141A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10312620A1 (de) 2003-03-22 2004-10-07 Imeter B.V. Elektronischer Turbinenradgaszähler
DE102005022437A1 (de) * 2005-05-14 2006-11-16 Imeter B.V. Messeinrichtung, insbesondere Balgengaszähler
DE102005045995A1 (de) * 2005-09-27 2007-04-05 Hydrotechnik Gmbh Durchflusssensor
DE102006006491B4 (de) * 2006-02-10 2014-01-23 Hydrometer Gmbh Schnittstellenschaltung
DE102007030055B4 (de) 2007-06-29 2010-01-28 Enocean Gmbh Energiewandler, Zähler mit Energiewandler, Vorrichtung mit Zähler, Verfahren zum Wandeln mechanischer in elektrische Energie, und Zählverfahren
DE102009030828B3 (de) * 2009-06-26 2010-11-25 Qundis Gmbh Wasser-/Wärmezähler
DE202013001852U1 (de) * 2013-02-27 2014-02-28 Christian Gradischnik Vorrichtung zum Erfassen eines Durchflusses
DE102020115646A1 (de) 2020-06-12 2021-12-16 Westenergie Ag Verfahren zur Überprüfung einer bei einem Tankvorgang eines Fahrzeugs an einer Wasserstofftankstelle an das Fahrzeug abgegebenen Gasmenge eines Wasserstoffs sowie System aus Fahrzeug und Wasserstofftankstelle

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Publication number Priority date Publication date Assignee Title
DE2608953C3 (de) * 1976-03-01 1981-08-06 Siemens AG, 1000 Berlin und 8000 München Volumenmeßgerät
CA1310682C (fr) * 1988-09-27 1992-11-24 Kwc Ag Turbogenerateur mu par canalisation d'eau domestique
US4936508A (en) * 1989-05-02 1990-06-26 Ingalz Thomas J Shower head volume meter with alarm signal
DE4124154C2 (de) * 1991-07-20 1995-11-02 Oeko Patent Finanz Ag Sanitärarmatur
DE29603056U1 (de) * 1996-02-21 1996-05-09 Minol Messtechnik W. Lehmann GmbH & Co, 70771 Leinfelden-Echterdingen Durchflußzähler für Flüssigkeiten
DE19728392A1 (de) * 1997-07-03 1999-01-07 Mantel Juval Fluidströmungsmesser
DE19903789C1 (de) * 1999-02-01 2000-08-03 Hydrometer Gmbh Kommunikationsfähiger Durchflußzähler für Flüssigkeiten, insbesondere Wasserzähler
DE19920393B4 (de) * 1999-05-04 2009-09-24 Elster Gmbh Anordnung zum Bestimmen eines Volumens eines Gasstroms

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02073141A3 *

Also Published As

Publication number Publication date
AU2002257520A1 (en) 2002-09-24
DE10111147B4 (de) 2006-02-02
WO2002073141A3 (fr) 2002-12-05
WO2002073141A2 (fr) 2002-09-19
DE10111147A1 (de) 2002-09-26

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