EP1305577A1 - Dispositif pour mesurer/determiner une grandeur physique d'un support - Google Patents

Dispositif pour mesurer/determiner une grandeur physique d'un support

Info

Publication number
EP1305577A1
EP1305577A1 EP01967220A EP01967220A EP1305577A1 EP 1305577 A1 EP1305577 A1 EP 1305577A1 EP 01967220 A EP01967220 A EP 01967220A EP 01967220 A EP01967220 A EP 01967220A EP 1305577 A1 EP1305577 A1 EP 1305577A1
Authority
EP
European Patent Office
Prior art keywords
housing
fuel cell
remote control
control point
physical quantity
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.)
Ceased
Application number
EP01967220A
Other languages
German (de)
English (en)
Inventor
Michael Krause
Florian Stengele
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.)
Endress and Hauser SE and Co KG
Original Assignee
Endress and Hauser 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 Endress and Hauser SE and Co KG filed Critical Endress and Hauser SE and Co KG
Publication of EP1305577A1 publication Critical patent/EP1305577A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/11—Automated chemical analysis

Definitions

  • the invention relates to a device for measuring / determining a physical size of a medium, the device having a sensor part and an electronic part.
  • the filling level of a filling material in a container is determined over the transit time of ultrasonic waves or of electromagnetic waves, in particular of microwaves, which are reflected on the surface of the filling material.
  • microwaves these are either radiated freely into the container in the direction of the surface of the filling material, or the microwaves are guided into the container along a conductive element.
  • capacitive and radiometric measuring methods are used for level measurement.
  • the resonance frequency of a vibrating rod or an oscillatable structure consisting of several vibrating rods is preferably evaluated. This measurement method takes advantage of the effect that the resonance frequency is different, depending on whether the vibrating rods execute their vibrations freely or in contact with the product.
  • the invention is based on the object of proposing an inexpensive device for measuring and / or determining a physical measured variable.
  • the object is achieved in that at least the electronic part is arranged in a housing and in that at least one fuel cell is provided, via which the energy requirement of the device is at least partially covered.
  • Fuel cells as such are state of the art. For example, hydrogen and oxygen are used as reaction gases. These are separated from each other by a very thin proton-conducting membrane, which has a thin platinum coating on both sides. This membrane also supports the generation of electrical energy because it breaks down the hydrogen into protons and electrons. The protons migrate through the membrane to oxygen and combine with the oxygen to form water. The membrane is impermeable to the electrons. Due to the excess of electrons on the hydrogen side and the lack of electrons on the oxygen side, positive and negative poles are formed. If the two are connected to one another, an electrical current flows which can be used to operate the device.
  • the advantage of the device according to the invention is that the measuring device no longer has to be wired or wired. This has a particularly positive effect if the measuring device according to the invention is used in the Ex area, where the cabling / wiring must also also comply with the respectively prescribed standards. It goes without saying, therefore, that by saving the wiring a considerable reduction in the cost per measuring point is achieved.
  • the physical measured variable is, for example, the fill level, the density, the pressure, the flow, the temperature or the chemical composition of a process medium.
  • the at least one fuel cell is arranged in the housing, in which the sensor part is integrated in addition to the electronics part.
  • the sensor part is integrated in addition to the electronics part.
  • the at least one fuel cell z. B. can also be arranged in the housing in which the electronic part is housed.
  • the installation of the fuel cell (s) depends on whether the measuring device is a compact sensor, in which the sensor part and electronic part are integrated in one unit, or whether the sensor part is spatially separated from the electronic part. In the latter case, it is of course sensible to provide the at least one fuel cell in the immediate vicinity of the electronic part, since the energy is usually consumed here.
  • the unit containing the electronic part is more easily accessible from the outside than the sensor part arranged in the process medium or in the vicinity of the process medium, which of course considerably simplifies the charging of the fuel cell (s).
  • An advantageous development of the device according to the invention provides a data line via which the measurement data, which reflect the physical quantity, are transmitted to a remote control point.
  • a microprocessor is provided which is arranged in the housing and which evaluates the measurement data of the physical variable and transmits the information via the data line to the remote control point and / or which communicates with the remote control point via the data line.
  • An alternative embodiment of the device according to the invention proposes that a transmitter / receiver unit be arranged in the housing, the transmitter / receiver unit wirelessly transmitting the measurement data of the physical quantity to the remote control point and / or the transmitter / receiver unit wirelessly with the remote control unit Control body communicates.
  • a transmitter / receiver unit be arranged in the housing, the transmitter / receiver unit wirelessly transmitting the measurement data of the physical quantity to the remote control point and / or the transmitter / receiver unit wirelessly with the remote control unit Control body communicates.
  • the device according to the invention is therefore a completely self-sufficient system.
  • the measuring device can of course be installed very easily on the one hand; on the other hand, the wiring can be saved completely.
  • the measuring device is preferably designed such that the customer can no longer open it. This measure makes it possible to avoid complex housing constructions, which are usually used to isolate the externally accessible measuring device from external influences. This configuration of the measuring device is made possible in particular by the fact that there are no longer any cables and consequently no cable bushings on the measuring device. Due to the simplified construction of the measuring device, the manufacturing costs can be reduced considerably.
  • an advantageous embodiment of the device according to the invention also provides that the housing is an encapsulated housing.
  • one embodiment of the device according to the invention proposes that the microprocessor issues a warning / error message as soon as the at least one fuel cell reaches a predetermined threshold value, this threshold value being determined in such a way that the energy reserve the fuel cell is only sufficient for a limited period of time. Furthermore, a control loop is provided which ensures that the energy supplied by the fuel cell is made available depending on the respective power requirement.
  • a charging unit is provided, via which the at least one fuel cell can be charged.
  • the charging unit is a syringe. This makes it possible to charge the fuel cell in a very short time. Downtimes of the measuring device can be completely ruled out.
  • FIG. 3 shows a schematic representation of a third embodiment of the device according to the invention.
  • Fig. 1 shows a schematic representation of a first embodiment of the device according to the invention.
  • the measuring device is a so-called compact sensor, in which the sensor part 2 and the electronics part 3 are accommodated in a housing 7.
  • the data and information exchange with a remotely located control point 8 takes place via the data lines 5, 6.
  • the energy supply of the device 1 is ensured via the fuel cell 4, which is also provided in the housing 7.
  • the microprocessor 10 monitors, among other things. the current state of charge of the fuel cell 4. As soon as the energy supply is only ensured for a defined limited period of time, an error message and / or a warning signal are / are output which indicate to the operating personnel that the fuel cell 4 must be charged. In the simplest case, the fuel cell 4 is charged by means of a syringe 9.
  • the sensor part 2 shows a schematic illustration of a second embodiment of the device 1 according to the invention.
  • the sensor part 2 and the electronics part 3 are accommodated in two spatially separate housings.
  • the sensor part 2 is positioned so that it comes into contact with the process medium, while the electronics part 3 is arranged outside the container in which the process medium to be measured or monitored is located.
  • the data and information exchange of the measuring device 1 with the remote control point 8 takes place in this embodiment by radio.
  • both the measuring device 1 and the remote control point 8 are each assigned a transmitting / receiving unit 11, 12.
  • the measuring device 1 is a vibration detector for the point level detection of the fill level of a filling material in a container.
  • such sensors detect the fill level on the basis of a change in the resonance frequency of an oscillatable structure.
  • the structure capable of oscillation is two oscillating rods 13, 14 which are arranged in the form of a tuning fork.
  • vibration detectors are well known from the prior art and are sold by the applicant, for example under the name "Liquiphant".
  • measuring device 1 is shown in Fig. 3. This embodiment is an autonomous system, since no wiring / cabling connecting the measuring device 1 to other units is provided.
  • measuring device 1 is a compact sensor: sensor part 2 and electronics part 3 are arranged in a housing 7.
  • the measuring device 1 is supplied with energy via the fuel cell 4, which is likewise arranged in the housing 7.
  • the data and information exchange with the control point 8 takes place wirelessly via radio.
  • the measuring device 1 can of course be installed very easily on the one hand; on the other hand, the expensive wiring / cabling can be dispensed with entirely.
  • the housing 7 can be of a very simple construction; both simplifications are reflected in reduced manufacturing costs.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Fuel Cell (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

L'invention concerne un dispositif pour mesurer/déterminer une grandeur physique d'un support. L'objectif de cette invention est de produire un dispositif économique pour mesurer et/ou déterminer une grandeur physique à mesurer. A cet effet, ce dispositif présente une partie capteur et une partie électronique. Au moins la partie électronique est agencée dans un boîtier et au moins une pile à combustible couvre au moins partiellement le besoin en énergie du dispositif.
EP01967220A 2000-08-03 2001-07-25 Dispositif pour mesurer/determiner une grandeur physique d'un support Ceased EP1305577A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10037911A DE10037911A1 (de) 2000-08-03 2000-08-03 Vorrichtung zum Messen/Bestimmen einer physikalischen Grösse eines Mediums
DE10037911 2000-08-03
PCT/EP2001/008569 WO2002012834A1 (fr) 2000-08-03 2001-07-25 Dispositif pour mesurer/determiner une grandeur physique d'un support

Publications (1)

Publication Number Publication Date
EP1305577A1 true EP1305577A1 (fr) 2003-05-02

Family

ID=7651235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01967220A Ceased EP1305577A1 (fr) 2000-08-03 2001-07-25 Dispositif pour mesurer/determiner une grandeur physique d'un support

Country Status (9)

Country Link
US (1) US8029731B2 (fr)
EP (1) EP1305577A1 (fr)
JP (1) JP3851268B2 (fr)
CN (1) CN1232802C (fr)
AU (1) AU2001287651A1 (fr)
CA (1) CA2417886C (fr)
DE (1) DE10037911A1 (fr)
EA (1) EA005899B1 (fr)
WO (1) WO2002012834A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10236226A1 (de) * 2002-08-07 2004-02-26 Endress + Hauser (Deutschland) Holding Gmbh Vorrichtung zur Bestimmung und/oder Überwachung einer physikalischen oder chemischen Größe
WO2004082054A1 (fr) * 2003-03-12 2004-09-23 Abb Research Ltd. Ensemble et procede pour l'alimentation en energie electrique sans fil d'un appareil de terrain dans une installation industrielle
DE10346145B4 (de) * 2003-10-01 2005-09-22 Endress + Hauser Gmbh + Co. Kg Vorrichtung zur Bestimmung und/oder Überwachung der Schichtdicke eines flüssigen Mediums
CN100350658C (zh) * 2004-09-29 2007-11-21 胜光科技股份有限公司 用于燃料电池***中测量燃料容量的测量装置
DE102009002009A1 (de) * 2009-03-31 2010-10-07 Endress + Hauser Gmbh + Co. Kg Vorrichtung zur Reduzierung bzw. Minimierung von Störsignalen bei einem Feldgerät der Prozessautomatisierung
CN102869955B (zh) * 2010-02-19 2016-06-15 威易拉有限公司 无线传感器单元和用于无线传感器的维护方法
DE102012200757B4 (de) 2012-01-05 2022-01-05 Vitesco Technologies GmbH Füllstandsgeber
CN104125248A (zh) * 2013-04-25 2014-10-29 成都技高科技有限公司 水资源监测终端
CN105225456A (zh) * 2015-10-23 2016-01-06 哈尔滨朋来科技开发有限公司 一种无线湿敏探测器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203546A (en) * 1984-11-30 1988-10-19 Robert James Redding An ultrasonic transducer for gas flow metering apparatus
US5421193A (en) * 1993-12-30 1995-06-06 Proeco, Inc. Method and apparatus for leak detection with float excitation and self-calibration
WO1999060540A1 (fr) * 1998-05-20 1999-11-25 Advanced Technology Materials, Inc. Dispositif detecteur de fuites pour appareil a recipient a fluide

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3342558A (en) * 1962-04-18 1967-09-19 Phillips Petroleum Co Electrical measuring system utilizing a fuel cell
GB1554668A (en) * 1977-02-23 1979-10-24 Secr Defence Water activated batteries
US4627445A (en) * 1985-04-08 1986-12-09 Garid, Inc. Glucose medical monitoring system
US5279294A (en) * 1985-04-08 1994-01-18 Cascade Medical, Inc. Medical diagnostic system
EP0215669A3 (fr) * 1985-09-17 1989-08-30 Seiko Instruments Inc. Diagnostique et procédé d'analyse de composés biochimiques, microbes et cellules
US5296374A (en) * 1989-10-20 1994-03-22 University Of Strathclyde Apparatus for assessing a particular property in a medium
DE19501013A1 (de) * 1995-01-14 1996-07-18 Hans Dr Kolb Energieversorgung für elektronische Gasmeßgeräte
US5763113A (en) * 1996-08-26 1998-06-09 General Motors Corporation PEM fuel cell monitoring system
US5796345A (en) * 1997-01-13 1998-08-18 Leventis; Nicholas Apparatus for detecting moisture in garments
US6076392A (en) * 1997-08-18 2000-06-20 Metasensors, Inc. Method and apparatus for real time gas analysis
US6217744B1 (en) * 1998-12-18 2001-04-17 Peter Crosby Devices for testing fluid
DE19929343A1 (de) * 1999-06-26 2000-12-28 Abb Research Ltd Anordnung zur drahtlosen Versorgung einer Vielzahl Sensoren und/oder Aktoren mit elektrischer Energie, Sensor oder Aktor hierzu sowie System für eine eine Vielzahl von Sensoren und/oder Aktoren aufweisende Maschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203546A (en) * 1984-11-30 1988-10-19 Robert James Redding An ultrasonic transducer for gas flow metering apparatus
US5421193A (en) * 1993-12-30 1995-06-06 Proeco, Inc. Method and apparatus for leak detection with float excitation and self-calibration
WO1999060540A1 (fr) * 1998-05-20 1999-11-25 Advanced Technology Materials, Inc. Dispositif detecteur de fuites pour appareil a recipient a fluide

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO0212834A1 *

Also Published As

Publication number Publication date
EA200300209A1 (ru) 2003-06-26
US8029731B2 (en) 2011-10-04
EA005899B1 (ru) 2005-06-30
AU2001287651A1 (en) 2002-02-18
CA2417886C (fr) 2010-06-22
JP3851268B2 (ja) 2006-11-29
JP2004506212A (ja) 2004-02-26
CA2417886A1 (fr) 2003-02-03
CN1232802C (zh) 2005-12-21
WO2002012834A1 (fr) 2002-02-14
DE10037911A1 (de) 2002-02-14
US20040101717A1 (en) 2004-05-27
CN1443299A (zh) 2003-09-17

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