EP0780822B1 - Verfahren und Anordnung zum kontaktlosen Übertragen von Messwerten - Google Patents
Verfahren und Anordnung zum kontaktlosen Übertragen von Messwerten Download PDFInfo
- Publication number
- EP0780822B1 EP0780822B1 EP96203531A EP96203531A EP0780822B1 EP 0780822 B1 EP0780822 B1 EP 0780822B1 EP 96203531 A EP96203531 A EP 96203531A EP 96203531 A EP96203531 A EP 96203531A EP 0780822 B1 EP0780822 B1 EP 0780822B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- measuring unit
- base station
- measured data
- transceiver
- evaluation circuit
- 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
Links
- 230000005540 biological transmission Effects 0.000 title claims description 22
- 238000000034 method Methods 0.000 title claims description 12
- 230000015654 memory Effects 0.000 claims description 21
- 238000011156 evaluation Methods 0.000 claims description 19
- 230000003139 buffering effect Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 20
- 239000003990 capacitor Substances 0.000 description 11
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Images
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
- G08C17/04—Arrangements for transmitting signals characterised by the use of a wireless electrical link using magnetically coupled devices
Definitions
- the invention relates to a method for the contactless transmission of measured values and a corresponding arrangement for the contactless transmission of measured values.
- Measured values used by those measuring points that are not easily accessible and whose measured values are not required continuously. These include, for example many consumption data measurements as well as temperature measurements like the measurement a room temperature to control a heating system. Even in medical Range when physiological readings from an implanted site over such procedures or Arrangements can be used advantageously.
- WO 95-27272 a method and a device are known with which measured values can be detected by a reader from a remote measuring point.
- a sensor and an electronic interface circuit which is operated by a local energy source and which the measured values of the Sensor converts into preferably digital measurement data.
- both measuring point as well as a reader with a transmitting / receiving arrangement.
- the interface circuitry uses little energy from the energy source switched inactive for longer periods and only periodically switched ready to receive. If data is to be transferred, that sends Reader a data request signal, if necessary several times in succession until a Request signal falls within a period in which the interface circuit is active is switched. This interface circuit then causes a Measured value or a sequence of measured values. This sending of data is required relatively much energy from the energy source, even if only for a short time, so that the energy source is strong, especially in the case of frequent measurement data transmission is loaded and has a short lifespan.
- EP 0 601 739 A2 describes a method and an arrangement for data transmission known from a measuring point with the aid of a query circuit, the Circuit of the measuring point and the query circuit via antennas with each other are coupled. These antennas are used to power the sensor and delivered for converting the measured values and for their transmission. there the measuring point therefore does not need its own energy source. It can be a measurement however only take place if the interface circuit is active. It can also on this way, practically only one measuring point is detected by an interface circuit become. On the other hand, this cannot be the case with this known method that a measurement or transmission of measurement data is no longer possible because an energy source is exhausted prematurely because the query circuit is easily accessible or is stationary and therefore has sufficient energy reserves can be.
- the invention has for its object a method or an arrangement specify with which the measurement data is acquired from preferably several measuring points can be, these measuring points contain energy sources, their lifespan is as long as possible with small dimensions.
- the energy source of the or each measuring point is only used for recording and converting the measured values, while for transferring, i.e. for sending the measurement data from the measuring point to a base station, which is carried out by energy sent to the base station is used.
- the base station especially if this is for transmission of measured values from several measuring points can be used with such Transmission power are equipped that even at a certain distance from the Sufficient energy is still received in this measuring point for transmission the measured values can be used.
- Measured values of the sensor are converted into measured data and in a memory of the evaluation circuit be cached.
- the data collection between the Transmission processes must be powered by the energy source of the measuring point.
- the stored measurement data are then transferred from memory for transmission transmitted to the base station via the transmitter / receiver of the measuring point.
- the use of the energy received in the measuring point by the base station to send the measurement data can be done in that from this energy, the for example via a coil or a capacitor, one DC voltage is generated, which is used to feed the transmitter of the measuring point becomes.
- This transmitter then preferably transmits on a different frequency than that Base station.
- the base station and the Measuring point inductively coupled to each other via an antenna designed as a coil are that a controllable impedance is connected to the coil of the measuring point is controlled by the measurement data, and that the change in the base station Impedance is evaluated.
- This principle is basically with data exchange arrangements known with a portable data carrier and a fixed station, for example from DE 43 23 530 A1, in which also the recharging of an energy store is described by means of the energy emitted by the fixed station.
- the invention is based on an embodiment shown in the figure explained in more detail.
- the base station 1 contains a control arrangement 14 which is generally formed by a processor, in particular a microprocessor with further elements.
- This control arrangement 14 controls a transmitter / receiver 12, which contains, inter alia, an oscillator and a demodulator. These are connected to a series resonant circuit comprising a series connection of a capacitor 11 and a coil 10, this coil representing an antenna.
- this coil 10 is inductively coupled to a coil 20 of the measuring point 2 , which is the antenna of this measuring point.
- the coil 20 forms a parallel resonant circuit with a capacitor 21, which is connected, inter alia, to a rectifier 22 which generates a DC voltage from the voltage induced in the coil 20. If this DC voltage has a sufficiently large value, a charging voltage for an energy store 26, which is shown here as an accumulator, is generated in a charging circuit 24 and the accumulator 26 is charged with it.
- the two voltage poles of the accumulator 26 are designated V S and V D and are connected to the correspondingly drawn supply voltage connections of two elements 32 and 34, which are explained below.
- the parallel resonant circuit consisting of the coil 20 and the capacitor 21 is also connected to a transmitter 30 and a receiver 28 of the measuring point 2.
- the receiver 28 demodulates a signal with which the transmitter / receiver 12 of the base station 1 has modulated the oscillation emitted from the coil 10 and the capacitor 11 via the series resonant circuit.
- This modulation contains, in particular, a command for the measuring station 2 to subsequently transmit measurement data after this command.
- This command is fed to an evaluation circuit 34, which is also easier Microprocessor can be designed and coupled to a sensor 36 which gives measured values.
- a measured value can be, for example, an analog one electrical signal can be shown, and this is in the evaluation circuit 34 in digital measurement data implemented.
- the transmitter 30 contains the series connection of a switch and an impedance Z.
- this impedance can be a resistor which loads the resonant circuit from the coil 20 and the capacitor 21 when the switch is closed.
- This additional load can be evaluated in the transmitter / receiver 12 of the base station 1 , for example in that a higher current flows from the coil 10 and the capacitor 11 of the base station 2 in the series resonant circuit when there is an additional load in the measuring point 1 .
- the impedance Z can also be designed, for example, as a capacitor, so that when the switch is closed, the resonance frequency of the parallel resonant circuit comprising the coil 20 and the capacitor 21 and the then capacitive impedance Z are tuned to another value. This can also be evaluated in the transmitter / receiver 12.
- the series resonant circuit consists of the coil 10 and the capacitor 11 and the parallel resonant circuit comprising the coil 20 and the capacitor 21 at least with the switch in transmitter 30 open, to substantially the same Resonance frequency are tuned.
- the transmission of the measured values from the measuring point 2 to the base station 1 thus takes place in that only one switch is closed or opened.
- the control signal required to control the switch requires very little power, especially if the switch is designed as a field effect transistor. If the evaluation circuit 34 and the non-volatile memory 32 are also implemented using MOS technology, very little electrical energy from the accumulator 26 is required for their operation. As a result, it is possible that, even during the time in which the measuring point 2 is not coupled to the base station 1 or the latter does not emit a signal, measured values from the sensor 36 are repeatedly converted into measured data and stored in the memory 32 one after the other.
- the memory 32 can also be used to store a program according to which the arrangement 34 operates.
- This program or parts of programs can also be written into the memory 32 by the base station 1 via the receiver 28 of the measuring point 2 .
- the evaluation program for the measured values of sensor 36 can be changed, for example, during operation of the measuring point.
- the elements 22, 24 and 28 to 34 can be conveniently integrated into a single Circuit can be summarized to be as small and as possible to realize inexpensive construction. Via the interface to sensor 36 or even cheaper to an interface led out of the integrated circuit external memory can then be added to or even instead of the memory 32 Sensors 36 are connected, making the integrated circuit as an enlarged Memory of a data exchange arrangement is used.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Near-Field Transmission Systems (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Direct Current Feeding And Distribution (AREA)
Description
Claims (11)
- Verfahren zum kontaktlosen Übertragen von Meßwerten wenigstens einer Meßstelle, an der die Meßwerte mittels eines Sensors gewonnen und in einer Auswerteschaltung, die von einer örtlichen Energiequelle betrieben wird, in Meßdaten umgesetzt werden, die zu einer Basisstation übertragen werden, wenn diese Basisstation in räumliche Nähe zur Meßstelle gebracht wird und ein Signal zur Meßstelle aussendet, dadurch gekennzeichnet, daß die Energiequelle nur zum Betrieb der Auswerteschaltung verwendet wird und daß die Meßdaten von der Meßstelle zur Basisstation mit Hilfe der Energie übertragen werden, die das von der Basisstation zur Meßstelle gesendete Signal enthält.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß in der Meßstelle empfangene Energie aus dem von der Basisstation ausgesendeten Signal außerdem verwendet wird, um der Energiequelle zusätzliche Energie zuzuführen.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Auswerteschaltung zu bestimmten Zeitpunkten betrieben wird, um Meßsignale des Sensors in Meßdaten umzusetzen und diese Meßdaten in einem Speicher der Auswerteschaltung zwischenzuspeichern, wobei die Meßdaten aus dem Speicher unabhängig von ihrer Erfassungszeit zur Basisstation übertragen werden.
- Verfahren nach einem der Ansprüche 1 bis 3, wobei die Basisstation und die Meßstelle induktiv über je eine Spule miteinander gekoppelt sind, dadurch gekennzeichnet, daß die Meßdaten durch Änderung einer mit der Spule der Meßstelle gekoppelten Impedanz und Auswertung der Impedanzänderung in der Basisstation übertragen werden.
- Anordnung zum kontaktlosen Übertragen von Meßwerten wenigstens einer Meßstelle mit
für jede Meßstelle wenigstens einem Sensor und einer Auswerteschaltung zum Umsetzen der Meßwerte des Sensors in Meßdaten,
einer Energiequelle und einem Sender/Empfänger zum Aussenden von Meßdaten und zum Empfangen von Signalen,
wenigstens einer Basisstation mit einer Steuerschaltung und einem Sender/Empfänger zum Aussenden von Signalen an den Sender/Empfänger der Meßstelle und zum Empfangen von Meßdaten von der Meßstelle,
wobei die Sender/Empfänger der Meßstelle und der Basisstation zeitweise miteinander gekoppelt sind und die Meßstelle erst bei Empfang des Signals der Basisstation Meßdaten aussendet, dadurch gekennzeichnet, daß die Energiequelle der Meßstelle mit einem Speisespannungsanschluß nur der Auswerteschaltung verbunden ist und daß der Sender der Meßstelle nur mittels der von der Basisstation empfangenen Energie die Meßdaten zur Basisstation überträgt. - Anordnung nach Anspruch 6, dadurch gekennzeichnet, daß an dem Sender/Empfänger der Meßstelle eine Ladeschaltung angeschlossen ist, die bei Empfang von Energie im Empfänger eine Spannung zum Aufladen der Energiequelle abgibt.
- Anordnung nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Auswerteschaltung eine Meßsteuerschaltung aufweist, um die Auswerteschaltung nur während vorgegebener erster Zeitspannen in einen Umsetzzustand und während der übrigen Zeitspannen in einen Energiesparzustand zu versetzen und daß die Auswerteschaltung einen Speicher zum Speichern von zu diesen in ersten Zeitspannen umgesetzten Meßdaten aufweist und daß ein Ausgang des Speichers mit dem Sender/Empfänger der Meßstelle gekoppelt ist.
- Anordnung nach einem der Ansprüche 5 bis 7, wobei der Sender/Empfänger sowohl der Meßstelle als auch der Basisstation eine als Spule ausgeführte Antenne aufweisen, die miteinander induktiv koppelbar sind, dadurch gekennzeichnet, daß an die Spule der Meßstelle eine von der Auswerteschaltung steuerbare Impedanz angeschlossen ist.
- Meßstelle für eine Anordnung nach einem der Ansprüche 5 bis 8, mit einem Sensor zum Abgeben von Meßwerten, einer Energiequelle, einer Auswerteschaltung zum Umsetzen der Meßwerte in Meßdaten und einem Sender/Empfänger zum Übertragen von Meßdaten und zum Empfangen von Signalen, dadurch gekennzeichnet, daß die Energiequelle nur mit einem Speisespannungsanschluß der Auswerteschaltung gekoppelt ist und daß der Sender/Empfänger eingerichtet ist, um Meßdaten nur bei Empfang eines Signals unter Verwendung der mit diesem Signal empfangenen Energie auszusenden.
- Meßstelle nach Anspruch 9, dadurch gekennzeichnet, daß ein Speicher zum Zwischenspeichern von Meßdaten vorgesehen ist, dessen Ausgang mit dem Sender/Empfänger gekoppelt ist, wobei die Auswerteschaltung, der Speicher und der Sender/Empfänger in einer integrierten Schaltung zusammengefaßt sind.
- Meßstelle nach Anspruch 10, dadurch gekennzeichnet, daß ein Datenanschluß des Speichers aus der integrierten Schaltung herausgeführt ist zum Anschluß weiterer Speicher.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19547684 | 1995-12-20 | ||
DE19547684A DE19547684A1 (de) | 1995-12-20 | 1995-12-20 | Verfahren und Anordnung zum kontaktlosen Übertragen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0780822A1 EP0780822A1 (de) | 1997-06-25 |
EP0780822B1 true EP0780822B1 (de) | 2003-07-09 |
Family
ID=7780728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96203531A Expired - Lifetime EP0780822B1 (de) | 1995-12-20 | 1996-12-13 | Verfahren und Anordnung zum kontaktlosen Übertragen von Messwerten |
Country Status (4)
Country | Link |
---|---|
US (1) | US5859873A (de) |
EP (1) | EP0780822B1 (de) |
JP (1) | JP3842854B2 (de) |
DE (2) | DE19547684A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8115635B2 (en) | 2005-02-08 | 2012-02-14 | Abbott Diabetes Care Inc. | RF tag on test strips, test strip vials and boxes |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
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US5970393A (en) * | 1997-02-25 | 1999-10-19 | Polytechnic University | Integrated micro-strip antenna apparatus and a system utilizing the same for wireless communications for sensing and actuation purposes |
JP2001291181A (ja) * | 2000-04-07 | 2001-10-19 | Ricoh Elemex Corp | センサ装置及びセンサシステム |
EP1275207B1 (de) * | 2000-04-18 | 2005-06-29 | Schleifring und Apparatebau GmbH | Anordnung zur übertragung elektrischer energie bzw. eines signals |
JP3839224B2 (ja) * | 2000-06-29 | 2006-11-01 | 株式会社山武 | 集積化センサ素子及びこれを用いた計測システム |
US6668618B2 (en) | 2001-04-23 | 2003-12-30 | Agilent Technologies, Inc. | Systems and methods of monitoring thin film deposition |
US6992594B2 (en) * | 2001-05-18 | 2006-01-31 | Douglas Dudley | Pipeline monitoring system |
DE10255741A1 (de) * | 2002-11-28 | 2004-06-09 | Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG | Modularer Messumformer mit galvanisch getrennten Messfühler |
US7142114B2 (en) * | 2003-09-30 | 2006-11-28 | General Electric Company | Non-contact patient temperature measurement |
CN101151510B (zh) * | 2005-01-25 | 2011-01-12 | Nxp股份有限公司 | 传感器电路阵列、操纵传感器电路阵列的控制设备及传感器系统 |
US20060283252A1 (en) * | 2005-06-17 | 2006-12-21 | Honeywell International Inc. | Passive acoustic wave sensor system |
CN102360442B (zh) * | 2006-03-10 | 2015-01-07 | 株式会社半导体能源研究所 | 半导体器件及其操作方法 |
EP2002383B1 (de) | 2006-03-15 | 2012-04-25 | Semiconductor Energy Laboratory Co., Ltd. | Halbleiterbauelement |
DE102006051900A1 (de) * | 2006-10-31 | 2008-05-08 | Endress + Hauser Gmbh + Co. Kg | Vorrichtung zur Bestimmung und/oder Überwachung mindestens einer Prozessgröße |
JP5412034B2 (ja) * | 2006-12-26 | 2014-02-12 | 株式会社半導体エネルギー研究所 | 半導体装置 |
DE102008019472A1 (de) * | 2008-04-17 | 2009-10-22 | Oerlikon Leybold Vacuum Gmbh | Vakuumpumpe |
JP2009271920A (ja) * | 2008-04-30 | 2009-11-19 | St Microelectronics (Rousset) Sas | 能動トランスポンダの再充電 |
DE102008057751B4 (de) | 2008-11-17 | 2011-03-10 | Langerfeldt, Michael, Dr. Dr. | Vorrichtung und Verfahren zum Lastmanagement |
US7990103B2 (en) * | 2008-11-24 | 2011-08-02 | Sony Ericsson Mobile Communications Ab | Portable electronic apparatus, and battery charging system comprising an antenna arrangement for a radio receiver |
DE102010044180A1 (de) * | 2010-11-19 | 2012-05-24 | Endress + Hauser Gmbh + Co. Kg | Vorrichtung zur Bestimmung und/oder Überwachung mindestens einer Prozessgröße |
DE102011079827A1 (de) * | 2011-07-26 | 2013-01-31 | Endress + Hauser Gmbh + Co. Kg | Verfahren und Vorrichtung zur Kommunikation mittels eines Transformators |
US12003902B2 (en) | 2015-06-15 | 2024-06-04 | Sentronic Gmbh Gesellschaft Fur Optische Messsysteme | System and method for transmitting information |
DE102015210880A1 (de) * | 2015-06-15 | 2016-12-15 | Sentronic GmbH Gesellschaft für optische Meßsysteme | Messeinrichtung zur Bestimmung physikalischer Eigenschaften, chemischer Eigenschaften, biologischer Eigenschaften und/oder von Stoffen der Umgebung wenigstens eines Aufnehmers oder des wenigstens einen Aufnehmers als Bestandteil der Messeinrichtung |
US11322986B2 (en) | 2018-06-29 | 2022-05-03 | Brusa Elektronik Ag | Inductive power transmission with resonant circuit and method for operating the device |
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US5221397A (en) | 1992-11-02 | 1993-06-22 | Xerox Corporation | Fabrication of reading or writing bar arrays assembled from subunits |
WO1994011851A1 (de) * | 1992-11-10 | 1994-05-26 | Micro-Sensys Gmbh | Miniaturisierter telemetriebaustein |
ATE201787T1 (de) | 1992-11-25 | 2001-06-15 | Simmonds Precision Products | Datenverarbeitungsstrukturen und methoden |
DE4323530A1 (de) * | 1993-07-14 | 1995-01-19 | Philips Patentverwaltung | Datenaustauschanordnung |
AU2200895A (en) | 1994-04-04 | 1995-10-23 | Motorola, Inc. | Method and apparatus for activating and accessing remote meter interface devices |
-
1995
- 1995-12-20 DE DE19547684A patent/DE19547684A1/de not_active Withdrawn
-
1996
- 1996-12-13 EP EP96203531A patent/EP0780822B1/de not_active Expired - Lifetime
- 1996-12-13 DE DE59610590T patent/DE59610590D1/de not_active Expired - Lifetime
- 1996-12-17 JP JP33682796A patent/JP3842854B2/ja not_active Expired - Fee Related
- 1996-12-18 US US08/768,473 patent/US5859873A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8115635B2 (en) | 2005-02-08 | 2012-02-14 | Abbott Diabetes Care Inc. | RF tag on test strips, test strip vials and boxes |
US8223021B2 (en) | 2005-02-08 | 2012-07-17 | Abbott Diabetes Care Inc. | RF tag on test strips, test strip vials and boxes |
US8358210B2 (en) | 2005-02-08 | 2013-01-22 | Abbott Diabetes Care Inc. | RF tag on test strips, test strip vials and boxes |
US8390455B2 (en) | 2005-02-08 | 2013-03-05 | Abbott Diabetes Care Inc. | RF tag on test strips, test strip vials and boxes |
US8542122B2 (en) | 2005-02-08 | 2013-09-24 | Abbott Diabetes Care Inc. | Glucose measurement device and methods using RFID |
Also Published As
Publication number | Publication date |
---|---|
JPH09215228A (ja) | 1997-08-15 |
EP0780822A1 (de) | 1997-06-25 |
JP3842854B2 (ja) | 2006-11-08 |
DE59610590D1 (de) | 2003-08-14 |
DE19547684A1 (de) | 1997-06-26 |
US5859873A (en) | 1999-01-12 |
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