EP2425378A1 - Vorrichtung und verfahren zur energieversorgung eines rfid-bauteils - Google Patents
Vorrichtung und verfahren zur energieversorgung eines rfid-bauteilsInfo
- Publication number
- EP2425378A1 EP2425378A1 EP10716838A EP10716838A EP2425378A1 EP 2425378 A1 EP2425378 A1 EP 2425378A1 EP 10716838 A EP10716838 A EP 10716838A EP 10716838 A EP10716838 A EP 10716838A EP 2425378 A1 EP2425378 A1 EP 2425378A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- energy
- rfid
- time interval
- rfid component
- antenna
- 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- Withdrawn
Links
Classifications
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
- G06K19/0707—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of collecting energy from external energy sources, e.g. thermocouples, vibration, electromagnetic radiation
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
- G06K19/0712—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of triggering distinct operating modes or functions dependent on the strength of an energy or interrogation field in the proximity of the record carrier
Definitions
- Exemplary embodiments according to the invention relate to radio frequency identification systems (RFID systems) and in particular to an apparatus and a method for supplying energy to an RFID component and to an apparatus and a method for detecting a measured variable.
- RFID systems radio frequency identification systems
- the field of application of the radio / radio-frequency identification systems relates, for example, to systems for identifying objects and living beings by means of RFID technology or transponder technology.
- Another area of application includes the wireless reading of data, such as data. Sensor data, using RFID technology.
- transponder integrated circuit (IC) ICs that can receive analog data from an external sensor. These sensor data can be read out via standard RFID protocols with an RFID reader. Partly this requires an external voltage source (eg battery) if the system is to recall the sensor data at specified times. If no external power source is used, the sensor data can only be created or read at times when an RFID reader is within range to power the system.
- IC transponder integrated circuit
- Some systems have predefined integrated sensors (eg temperature only). In many systems, the number of sensors to be connected is limited (eg a maximum of three). Furthermore, most systems can only use sensors that return analog measurements. These analog values will be then converted into digital data in the system (transponder system).
- the object of the present invention is to provide an apparatus and a method for supplying energy to an RFID component (radio-frequency identification component), which enables an at least temporary, self-sufficient operation of the RFID component.
- RFID component radio-frequency identification component
- An embodiment according to the invention provides a device for powering an RFID component comprising an antenna and an energy store.
- the energy store is designed to store energy that is induced into the antenna by an alternating electromagnetic field during a first time interval.
- the energy storage device is designed to provide the RFID component with energy for maintaining its functionality during a later, second time interval, if one by an electromagnetic alternating field During the later, second time interval induced energy is not sufficient to supply the RFID component.
- Embodiments according to the invention are based on the central idea that an energy induced in the antenna is stored.
- the stored energy can then be used to power the RFID device at any later time if there is no alternating electromagnetic field of sufficient energy density to induce sufficient energy to power the RFID device.
- the RFID component can also be operated if, for example, no reading device m is close enough to supply the RFID component with its electromagnetic alternating field.
- an autonomous operation of the RFID component can be made possible.
- the device comprises an RFID component, an antenna, an energy store and a data acquisition module.
- the energy store is designed to store energy that is induced into the antenna by an alternating electromagnetic field during a first time interval. Furthermore, the energy store is designed to supply the RFID component with energy for maintaining its functionality during a later, second time interval if an energy which is induced by an electromagnetic alternating field during the later, second time interval is insufficient to prevent the RFID Supply component.
- the data acquisition module is configured to detect the measurement size during the second time interval and is configured to provide the measurement size to the RFID component for storage or transmission to a receiver.
- the energy storage is designed to power the data acquisition module while the meter is being acquired.
- Some embodiments of the invention include a power management device configured to determine an energy state parameter of the energy storage and to provide the energy state parameter to the RFID device for storage or transmission to a receiver.
- 1 a, 1 b show a block diagram of a device for powering an RFID component
- Fig. 2 is a block diagram of an apparatus for
- FIG. 5 is a block diagram of portions of an RFID sensor system
- FIG. 6 shows a block diagram of a device for supplying power to an RFID sensor system
- FIG. 7 is a block diagram of a portion of a
- FIG. 8 shows a schematic illustration of an application of an RFID sensor system
- 9 is a flow chart of a method for supplying power to an RFID component; and 10 is a flowchart of a method for detecting a measured variable.
- FIG. 1a and 1b show a block diagram of a device 100 for the power supply of an RFID component 102 according to an embodiment according to the invention.
- the device 100 comprises an antenna 110 and an energy store 120.
- the antenna 110 is connected to the energy store 120.
- the energy store 120 stores energy that is induced into the antenna 110 by an alternating electromagnetic field during a first time interval.
- the energy storage device 120 supplies the RFID component 102 with energy for maintaining its functionality during a later, second time interval when an energy induced by an alternating electromagnetic field during the later, second time interval is insufficient to supply the RFID component 102.
- the energy store 120 can be connected to the RFID component 102 in order to supply the RFID component 102.
- the RFID component 102 may be provided with its own antenna 104, as shown in FIG. 1a, for example, to be powered by a reader or receiver, receive data, and / or transmit data to the receiver or reader.
- the RFID device 102 may be connected to the antenna 110 of the power supply device 100 for being powered by, for example, a reader or receiver, receiving data, and / or data to the device Receiver or the reader to transfer.
- the system may include another antenna 104 into which energy may be induced to directly supply the RFID device 102 and in which insufficient energy is being generated during the second time interval to supply the RFID To ensure components.
- the alternating electromagnetic field refers to both an alternating magnetic field, e.g. in the case of RFID components with load modulation, as well as on an electromagnetic wave, which is used eg for RFID components based on a backscatter ring method.
- the electromagnetic alternating field refers to any form of electromagnetic fields via which energy can be induced or coupled without contact into an RFID component.
- the functionality of the RFID component 102 can be maintained by the energy storage device 120, even if no device, such as a reading device, is sufficiently close to the RFID component 102 to generate a sufficiently high alternating electromagnetic field in order to inductively or inductively secure the RFID component to supply electromagnetically. Maintaining the functionality may relate, for example, to a time interval directly after a supply end time, during which the energy density of the alternating electromagnetic field falls below a supply threshold at which insufficient energy is induced to supply the RFID component 102. Maintaining functionality, however, primarily refers to a time interval that begins at any time after the end of supply. As a result, the RFID component 102 can be operated independently of the presence of a reader or another source of alternating electromagnetic field at any point in time m. For example, a commissioning of the RFID component 102 in constant or random time intervals will be realized. In other words, the first time interval and the second time interval can follow one another directly or have a time interval.
- the RFID component 102 may be kept in a standby state or in a standby state, for example, and put into operation as needed, regardless of the presence of a sufficiently strong alternating electromagnetic field.
- This state of readiness may, for example, be maintained for a period of a few seconds, a few minutes, a few hours or a few days depending on the type and size of the energy store.
- An energy store 120 can be realized, for example, as a capacitor or accumulator, among other things.
- the type and dimensioning of the energy storage 120 can be adapted to the needs of the application.
- the RFID component 102 also called an RFID tag, RFID module or RFID circuit, can, for example, as shown in FIG. 1 a, be a conventional RFID component that does not have a dedicated interface for connecting the device 100 to the Having power supply.
- the device 100 may be designed for power supply in order to be connected to the RFID component 102 together with the antenna of the RFID component 102.
- the power supply device 100 may use the antenna terminals of the RFID device 102, wherein the RFID device 102, as already described, the antenna 110 the device 100 is used for power supply or has its own antenna 104.
- the RFID component 102 can have its own interface via which the RFID component 102 can be supplied, to which the device 100 for the power supply can be connected.
- the device 200 comprises an RFID component 102, an antenna 110, an energy store 120 and a data acquisition module 210.
- the antenna 110 is connected to the energy store 120, the energy store 120 is connected to the RFID component 102 and the data acquisition module 210 and the data acquisition module 210 is connected to the RFID component 102.
- the energy store 120 stores energy that is induced into the antenna 110 by an electromagnetic alternating field during a first time interval. Furthermore, the energy storage 120 provides the RFID component 102 with energy for maintaining its functionality during a later, second time interval when an energy induced by an electromagnetic alternating field during the later, second tent interval is insufficient to supply the RFID component 102.
- the data acquisition module 210 detects ⁇ the measured quantity during the second time interval, and provides the measured quantity to the RFID component 102 for storing or transmitting to a receiver ready. In doing so, the energy storage device 120 supplies the data acquisition module 210 with energy during the acquisition of the measured variable.
- the RFID component 102 can have its own antenna 104 or, as already described in FIG. 1 b, use the antenna 110 of the energy store 120 to supply data receive, transfer data or, in the case of sufficient to be energized by a strong alternating electromagnetic field.
- measurement variables can be detected by the data acquisition module 210 and provided to the RFID component 102, even if no reader or another source of alternating electromagnetic field has an alternating electromagnetic field provides a sufficient energy density for the supply. Detected measurement variables can be determined in this way e.g. be stored by the RFID component 102 and read out at a later date with a reader.
- the data acquisition module 210 may include one or more sensors, e.g. for temperature, humidity, pressure or acceleration, a microphone, an image sensor and / or a timer.
- sensors e.g. for temperature, humidity, pressure or acceleration, a microphone, an image sensor and / or a timer.
- the electromagnetic alternating field in the first time interval may have a higher energy density than an energy density of the alternating electromagnetic field in the second time interval. However, this need not necessarily be the case, since an alternating field with a lower energy density can be sufficient to charge the energy store 120, but at the same time is not sufficient to supply the RFID component 102.
- the power management device may determine an energy state parameter of the energy storage and provide it to the RFID device for storage or transmission to a receiver.
- the energy state parameter can be, for example, a charging voltage or a charging current of the energy store (for example the voltage between the electrodes, if the energy store is a capacitor) or another variable, which reflects the state of charge and / or the remaining energy m the energy storage.
- This value or a quantity derived therefrom can be transmitted, for example, to a reading device or read out by a reading device, and thereby, for example, it can be determined how long the RFID component or the entire device (eg RFID component, data acquisition module, energy management device) can work independently after removing the reader.
- the energy management device can, for example, supply the RFID component with energy via an antenna interface.
- the energy management device can simulate a power supply of the RFID component by a reading device via the antenna of the RFID component.
- the antenna interface of the RFID component can be connected to the antenna of the RFID component and to the energy management apparatus.
- the RFID module can be powered either by a reading device or the Energysciences- Ein ⁇ chtung and the associated energy storage with energy.
- the energy management device can be designed to monitor and control the supply of the RFID component and, for example, to activate a supply through the energy store.
- the power management device can perform a DC / DC conversion to provide a constant voltage and to use as much energy from the energy storage.
- the higher-level processing system eg the reading device or a host system connected thereto or a connected main computer
- the control module can control a storage of data m the RFID component.
- measured variables of a data acquisition module m detected by the control module can be stored in the RFID component.
- the control module can for this purpose be connected directly to the antenna of the RFID component (or the antenna of the device for power supply, if it is used by the RFID component) and thus address the RFID component via the antenna interface.
- control module can simulate a reading device via the antenna interface of the RFID component and thereby write data into the memory of the RFID component.
- the antenna interface of the RFID component can be connected to the antenna of the RFID component and control module.
- the RFID module can be addressed either by a reader or the control module.
- the control module can for this purpose use the same protocol and / or the same (frequency) modulation as a reader.
- control module can for example generate a carrier signal in order to provide an energy provided by the energy store or the energy management device for supplying the RFID component to the RFID component at an antenna interface of the RFID component based on the generated carrier signal for supply.
- the control module can supply the RFID module with energy from the energy storage just as if a reader were nearby.
- the energy can be coupled in via the high-frequency carrier.
- the carrier generation can be taken over by the control module (or directly by the energy management device).
- a power management voltage can also be connected directly to the RFID component.
- the control module can, for example, also be separated and integrated into the power management, and the data acquisition module can already be integrated in the RFID component (eg transponder with integrated sensor).
- the overall system 300 includes an RFID sensor system 200 including i.a. the antenna 110 and the data acquisition module 210, an RFID reader 310 with antenna 312 and a host system 320.
- the flow of information is directed from the RFID sensor system 200 to the RFID reader 310 and from there to the host system 320.
- the RFID reader 310 can be connected to the host system 320 and the RFID reader 310 can exchange data with the RFID sensor system via an alternating electromagnetic field.
- the RFID reader 310 can supply the RFID sensor system 200 with energy via the alternating field and charge the energy store of the RFID sensor system 200.
- viewing an entire system for acquisition and transmission of (sensor) data involves multiple units.
- the RFID sensor system 200 can temporarily record autonomously (sensor) data and write it (internally) into the memories of one or more conventional standardized RFID components or RFID transponders, which can be read out by means of RFID technology.
- the RFID reader 310 designates a generally available standard RFID reader which can wirelessly read out the sensor data stored in the RFID transponder 200 (RFID sensor system).
- the host system 320 designates a system used after the RFID reader, which stores the data of the RFID readers, especially the sensor data, further processed and passed on.
- An example of a host system may be a PC or a server (not the subject of the invention).
- the information flow in FIG. 3 shows an example of the path of the sensor data from the RFID sensor system 200 to the evaluating host system 320.
- the RFID sensor system 400 comprises an RFID component 102, an antenna 110, an energy store 120, a data acquisition module 210, an energy management device 410 and a control module 420.
- the RFID component 102 is connected to the antenna 110, the energy management 410 and the control module 420, the energy storage 120 is connected to the power management 410, the power management 410 is connected to the control module 420 and the data acquisition module 210, and the data acquisition module 210 is also connected to the control module 420.
- the antenna 110 is connected to the energy store 120 via the power management 410 and can be used to charge the energy store 120.
- the entire RFID sensor system 400 can be supplied with energy via the antenna 110 if a sufficiently strong alternating electromagnetic field is present at the location of the antenna 110.
- the data acquisition module 210 may detect one or more metrics 402.
- the detected measured variables 402 can be provided by the data acquisition module 210, for example, directly or via the control module 420 to the RFID component 102.
- the control module 420 can for example simulate a reading device and thereby store the measured variables or even processed measured quantities in the RFID component 102.
- the RFID sensor system 400 comprises at least one antenna 110 and at least one RFID tag IC or RFID component 102. Taken together, the combination of antenna 110 and RFID tag IC 102 may be a conventional standard RFID transponder which is widely available in this form. The energy for operating a conventional RFID transponder wins the RFID transponder, for example, from the generated energy field of the RFID reader, ie the RFID transponder requires no additional energy source.
- an innovation arises, for example, from the expansion of the existing combination (components antenna and RFID tag) by the components control module, power management, energy storage and / or data acquisition module (for example, sensors) to an RFID sensor system.
- An advantage of this architecture is, for example, the use of a conventional standard RFID transponder, which can be read by conventional standard RFID readers and by the proposed extension by several components (control module, power management, energy storage and data acquisition module or sensors) , allows a wider range of application.
- RFID transponders Of conventional standard RFID transponders, it is often generally readable and writable (wireless) only by an RFID reader, i. Often only previous data written to the transponder or the RFID component can be read out again. Frequent use of RFID transponders can be found, for example, in logistics.
- the described concept can now expand, for example, the use of conventional standard RFID transponders by integrating the components control module, data acquisition module, power management and / or energy storage. There may therefore be some new functionalities and advantages over known concepts.
- an automatic recording of data from at least one data acquisition module can take place.
- the dates to which the data the data acquisition units are to be retrieved For example, air pressure every hour and temperature every minute. Reading the data (coming from the data acquisition module or from sensors) can be done with a conventional standard RFID reader if a conventional standard RFID tag IC or standard RFID component is used.
- a flexible use of different data acquisition modules such as sensors or the like, which also differ in terms of their interface used (analog, digital (eg SPI)) to the control module.
- a simultaneous recording of temperature sensor data (analog data), time (digital, SPI) and air pressure (digital, I 2 C) can take place.
- the RFID reader can, for example, query the energy state of the RFID sensor system in order to determine the (residual) duration of the autonomous operation of the RFID sensor system.
- the RFID sensor system 500 includes an antenna module 510, a power management 410, an energy storage 120, an RFID component or RFID tag 102, a control module 420, a data acquisition module 210 and optionally a Zeitschreibwachtungvor ⁇ chtung 520.
- the antenna module 520 is with the power management device 410, the RFID component 102 and the control module 420, the power management 410 is connected to the energy storage 120 and the optional time Monitoring device 520, the control module is connected to the RFID component 102, the optional time monitoring device 520 and the data acquisition module 210.
- the antenna module 510 includes 1 to n antennas (as shown by reference numerals 104 and 110) that may be associated with the power management 410 and the energy storage 120 and / or the RFID component 102, the control module 420, and the data acquisition module 210.
- the data acquisition module 210 includes 1 to n sensors 430 and may detect one or more physical or chemical measurements 402.
- two portions of 502 r 504th Subarea 1 essentially comprises the energy supply of the RFID sensor system, and subarea 2 includes, inter alia, the control module and the data acquisition module (sensors), as well as the RFID component 102.
- subarea 1 includes, for example, the principle of temporary operation of the system, i. the intermediate storage of the energy from the charging process (from the surrounding energy field of the RFID reader or other sources) and the provision of energy for the temporary self-sufficient operation of the RFID sensor system.
- Subarea 2 includes, for example, the information technology structure of the RFID sensor system. This involves the data flow of the data from the data acquisition units or the sensor data, to storage, for example, in one or more conventional, standardized RFID tags of the system.
- the RFID sensor system 500 may include a time monitoring device 520.
- the time-monitoring device 520 can, for example, determine the point (s) of time at which one or more measured variables 402 are to be detected.
- the time monitoring device 520 with the power management 410 and / or the troll module 420 connected.
- the energy management device 410 can ensure that the time monitoring device 520 is permanently supplied with energy directly from the alternating electromagnetic field or by energy from the energy store when the alternating electromagnetic field does not have a sufficient energy density.
- the time monitoring device 520 can be provided, for example, by a signal to the energy management device 410 and / or to the control module 420 of a power supply of the RFID sensor system by the energy store 120 and activate a detection of the measured variable 402 by a sensor 430 of the data acquisition module 210.
- the time monitoring device 520 may be part of the control module 420, part of the power management device 410, or a separate unit as shown in FIG. 5.
- FIG. 6 shows the partial area 502 for supplying energy to the RFID sensor system 500 (subarea 1) in more detail.
- the figure shows the antenna module 510 with 1 to n antennas, a plurality of energy stores 120 (1 to m), and a voltage rectification and / or voltage multiplier 610, a power monitor 620 and a power supply device 630 with one or more DC / DC Converters 632 (DC-DC converter) and one or more voltage outputs 634 (output voltage 1 to k).
- the voltage rectification / voltage multiplier 610, the power monitoring device 620, and the power supply device 630 may be part of the power management device 410.
- the antenna module 510 is connected to the voltage rectification / voltage multiplier 610, the voltage rectification / voltage multiplier 610 is connected to the one or more energy stores 120 via one or more switches 612 that can be controlled by the energy monitor 620, for example the energy storage devices 120 are connected to the power supply device 630.
- this example concerns the power supply of the temporarily autonomously operating system, so that the RFID sensor system can operate correctly for a defined (application-dependent) period of time.
- the sub-area energy supply can in this example be roughly subdivided into two parts.
- the first part comprises one or more antennas (1 n), via which the system can be supplied with energy or charged.
- the second part can be described as energy management and energy storage.
- the components energy management and energy storage comprise several task areas or modules.
- the current fed in via the antenna (s) can be rectified so that a DC voltage is available to the system.
- voltage multiplier circuits can additionally be used. If, for example, a separate voltage converter (DC / DC converter) is used for each energy store, the efficiency can be increased.
- the Energy Monitor 620 can permanently monitor the power available in the system. On the one hand, the module 620 can regulate the component energy storage 120 (energy storage 1 m), on the other hand 620 energy status data (energy status parameter) can be made available to this module for storage in the RFID tag (which can be entered into the tag / RFID component with the aid of the control module ), which can then inform the reading device of the energy status of the RFID sensor system.
- the energy store 120 may consist of at least one or more energy stores 1 to m, which may be switched on or off depending on the energy condition of the system.
- the dimensioning of the energy stores 120 can be Depending on the application, as well as the number of energy storage.
- the connection and disconnection of the individual energy storage 120 can take over the module energy monitoring 620.
- the concept with several energy storage devices can make it easier to start up the system so that it is ready sooner, as it is primarily the smaller energy storage devices that can be charged first.
- the power supply (s) 630 may access the existing energy storage devices 120 and may generate, for example, one or more constant output voltages I ... k for the overall system. The generation of one or more output voltages can be done in different ways.
- highly efficient DC / DC converters 632 which already from a low input voltage of, for example, less than 100 mV, have a defined (usually higher) operating voltage (eg 3.3 V) ) can be used.
- a DC / DC converter for the sum of all energy storage, or to use a separate DC / DC converter after each individual energy storage.
- An advantage of this procedure can lie in a higher energy yield from the respective energy storage.
- the DC / DC voltage converters can have a high efficiency. As an example, from voltages in the energy storage devices in the range from 1.8 V to 5.5 V, a constant system voltage of 3.3 V is generated.
- a second DC / DC converter can be used for the voltage range below 1.8V, which can generate a constant output voltage of 3.3V at input voltages of less than 100mV to 1.8V. This can be used for effective utilization of the energy storage.
- a constant system voltage is important for the operation of the components, for example, from subarea 2 (data acquisition module, RFID component, etc.).
- the RFID Sensor system Due to the interaction of these above-mentioned modules for supplying power to the RFID sensor system, the RFID Sensor system, for example, work properly self-sufficient for a definable period of time.
- Fig. 7 shows the portion 504, which i.a. the control module and the data acquisition module (sensor) comprises (subarea 2).
- the figure shows the antenna module 510 with 1 to n antennas 104, one or more RFID components 102, the control module 420 and the data acquisition module 210 with 1 to m sensors 430 for detecting one or more physical or chemical parameters 402.
- the 1 to n antennas 104 of the antenna module 510 may correspond to the 1 to n antennas of FIG. 6 or additional additional antennas to those shown in FIG. 6 antennas.
- the data acquisition module 210 or each individual sensor 430 is connected to the control module 420, the control module 420 is connected to the one or more RFID components 102 and optionally to the 1 to n antennas or the antenna module 510 and the RFID components 102 are connected to the 1 to n antennas or the antenna module 510.
- a separate antenna 104 may be provided for each RFID component 102.
- this subarea (subarea 2) of the RFID sensor system deals, among other things, with methods for the information technology aspects. This concerns, for example, the question of how the recorded sensor data are interrogated, possibly preprocessed and buffered, before the (sensor) data then reach a higher-level host system by reading, for example with the aid of an RFID reader.
- the control module can on the one hand enable the writing and reading of conventional RFID tag ICs without the use of RFID readers or the RFID air interface, ie it can be a simultaneous modulation (data to the RFID tag IC) and Demodulation (data from the RFID tag IC) of the data take place.
- the control module for example, the recording or processing the data of the connected data acquisition units take over.
- the data acquisition module can include all data acquisition units (eg sensors) 1 m of the RFID sensor system. In principle, every available sensor can be used. In this case, for example, the term sensor refers to any system that outputs at least one value (eg analog, time-contingent, time-discrete or digital) at an exact point in time.
- the voltage supply of the sensors can be provided by subsection 1 (the power supply).
- the control module may receive one or more values from one or more connected data acquisition modules (eg, sensors). These received values can be processed in the control module, for example including falls, analog to digital conversion of an analog sensor value or the recording ei ⁇ nes digital value.
- this module can control the connected RFID tags (ICs) 1 k, ie the control module can be responsible for the storage of the (processed) data of the data acquisition units into the data memories of the RFID tags.
- the data describing the energy status of the RFID sensor system can also be written to one or more RFID tag ICs via the control module. If the memory of the RFID tags is not sufficient, because, for example, too many (sensor) data is available, the control module can take over the function of a temporary buffer. This can be emptied or the data can be written to the RFID tag ICs as soon as the RFID tags have been read out by an RFID reader. Thereby, a method for (temporary) storage (rewriting and verification by re-reading), for example, of data from data acquisition units in conventional RFID tag ICs, without including the air interface.
- RFID component can be at least one conventional RFID tag
- This RFID tag represents, for example, the
- any values can be stored in principle via the control module.
- the antennas connected to the RFID tags can be communicated with an RFID reader and thus the values read out or also changed (by the reader).
- the antenna module consists of at least one antenna. These antennas together with the RFID tags (ICs) can represent functioning RFID transponders.
- the RFID tag ICs can now be read out, for example, with the aid of these antennas wirelessly through an RFID reader. This allows the acquired (sensor) data from the data acquisition module to be transferred wirelessly to a higher-level system.
- one antenna is determined for each RFID tag IC, but it is also conceivable, for example, that when using the same transmission principle, only one antenna can be used for a plurality of RFID tag ICs.
- FIG. 8 shows a schematic illustration of an application 800 of an RFID sensor system 400 according to an embodiment according to the invention.
- the figure shows an exemplary scenario for use with the RFID sensor system 400.
- the RFID sensor system 400 is poured into liquid screed to determine the humidity and temperature over time of the screed. From this information on the correct drying phase of the screed can be derived.
- an inductively operating RFID transmission method is used (eg load modulation / alternating magnetic field).
- the RFID sensor system 400 itself consists of an antenna 110 and an RFID tag IC 102, as well as a temperature and humidity sensor 210, two energy stores 120 (capacitors), power management 410 and control module 420 exemplary sequence of this scenario for the temporary self-sufficient operation of the RFID sensor system 400, how the storage of the data in the transponder IC 102, without including the air interface described.
- an RFID reader 310 reads the sensor data stored in the RFID transponder of the RFID sensor system (from the previous measurement period).
- the RFID reader can determine the state of charge (how much energy is still available) of the RFID sensor system (by reading the RFID transponder of the RFID sensor system).
- the reader determines that the RFID sensor system has sufficient energy for its intended purpose, then the reader can be removed or the (power) field generated by the reader can be turned off. If it is determined that there is too little energy in the RFID sensor system, then the reader can still generate an (energy) field to charge the RFID sensor system. The injected energy is stored in the RFID sensor system. By using the charge control, the current state of the energy supply can be written into the RFID transponder of the RFID sensor system. The reader can read this energy state parameter again and determine whether the energy storage is to be charged further.
- the reader can initiate the start of the RFID sensor system (data acquisition). Just as well, the start of the data acquisition can be triggered automatically, for example by reaching a certain energy threshold.
- the RFID sensor system can now work independently (without external power supply). At given times, the sensor data (here temperature and humidity) can be queried, possibly preprocessed and buffered. The storage takes place either in the RFID transponder, for example directly, or in the intermediate memory of the arithmetic unit used (part of the control unit). troll module), if the RFID transponder does not have sufficient storage space for all sensor data.
- the energy storage of the RFID sensor system emptied accordingly faster or slower.
- the RFID sensor system can then be read out again by the read device.
- Some exemplary embodiments according to the invention relate to a device for powering an RFID component.
- the device comprises an antenna, an energy store and an energy management device.
- the energy store stores energy that is induced by an alternating electromagnetic field during a first time interval in the antenna.
- the energy storage device supplies the RFID component with energy for maintaining its functionality during a later, second time interval if an energy that is induced or coupled in by an alternating electromagnetic field during the later, second time interval is insufficient to supply the RFID component.
- the power management device determines an energy state parameter of the energy storage and provides the energy state parameter to the RFID device for storage or transmission to a receiver.
- Some embodiments according to the invention relate to an RFID reader for providing an energy state information of an RFID component.
- the receiver has an energy state information provider which is designed to provide the energy state information of the RFID component based on an energy state parameter received from the RFID component.
- 9 shows a flow chart of a method 900 for the energy supply of an RFID component according to an exemplary embodiment according to the invention.
- the method 900 includes storing 910 energy and providing 920 the RFID device with the stored energy.
- energy is stored 910, which is induced by an electromagnetic alternating field during a first time interval in an antenna.
- the RFID component is supplied 920 with the stored energy for maintaining its functionality during a later, second time interval, when an energy which is induced by an electromagnetic alternating field during the later, second time interval is insufficient to supply the RFID component ,
- the method 1000 includes storing 910 energy, supplying stored energy to an RFID device 920, acquiring 1030 the metric by a data acquisition module, and providing 1040 the data acquisition module during acquisition of the metric with stored energy.
- energy is stored 910, which is induced by an electromagnetic alternating field during a first time interval in an antenna.
- the RFID component is supplied with stored energy for maintaining its functionality during a later, second time interval when an energy induced by an electromagnetic alternating field during the later, second time interval is insufficient to supply the RFID component.
- Some exemplary embodiments according to the invention relate to a temporarily autonomously operating transponder or, in other words, to methods and devices for energy management for temporarily autonomous provision of energy for a transponder system (RFID component) and for storing (sensor ) Data, eg in a Coin-based RFID transponder IC without inclusion of the air interface.
- RFID component transponder system
- sensor sensor
- the described concept relates, for example, to methods and devices for inductive or electromagnetic charging of a transponder system or, as hitherto referred to, of an RFID sensor system in order to enable timely self-sufficient deterministic operation of one or more data acquisition units (eg sensors) and transmission of the recorded ones Data (for example, sensor data) using RFID technology to enable.
- data acquisition units eg sensors
- Data for example, sensor data
- RFID sensor system for example, enable an energy-autonomous operation of one or more data acquisition units (eg sensors) over an application-specific fixed period of time, without the use of external energy sources.
- the (sensor) data are transmitted wirelessly to a higher-level system (for example an RFID reader or the host system connected thereto) by using an RFID transponder (RFID component) by means of RFID technology, for example.
- a higher-level system for example an RFID reader or the host system connected thereto
- RFID transponder RFID component
- RFID technology for example.
- the type of connection of the sensors or, more generally, of data acquisition units is in this case basically open, i. All possible transmission protocols can be integrated. In principle, there is no limit to the type and number of sensors or data acquisition units.
- a use of common standard RFID tags (including standard protocol) for data transmission to a standard RFID reader can be made possible.
- all types of sensor or data acquisition types can be integrated.
- the measurement times can be determined deterministically and individually for each data acquisition unit.
- the period in which the system works temporarily self-sufficient can be determined application-specific. Furthermore, the system offers the possibility for new services and thus forms the basis for the emergence of new areas of application.
- consideration of an entire system for acquisition and transmission of (sensor) data includes multiple units.
- the RFID sensor system which temporarily stores data (sensor) and writes (internally) into the memories of one or more conventional standardized RFID transponders, which can be read out by means of RFID technology.
- the RFID reader which may designate a generally available standard RFID reader, can wirelessly read out the sensor data stored in the RFID transponder (RFID sensor system).
- the host system which can designate a system used according to the RFID reader, can further process and pass on the data of the RFID reader, especially the sensor data.
- An example of a host system may be a PC or a server.
- the scheme according to the invention can also be implemented in software.
- the implementation may be on a digital storage medium, in particular a floppy disk or a CD with electronically readable control signals, which may cooperate with a programmable computer system such that the corresponding method is executed.
- the invention thus also consists in a computer program product with program code stored on a machine-readable carrier for carrying out the method according to the invention when the computer program product runs on a computer.
- the invention can be realized as a computer program with a program code for carrying out the method when the computer program product runs on a computer.
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Near-Field Transmission Systems (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009019657A DE102009019657A1 (de) | 2009-04-30 | 2009-04-30 | Vorrichtung und Verfahren zur Energieversorgung eines RFID-Bauteils |
| PCT/EP2010/055851 WO2010125158A1 (de) | 2009-04-30 | 2010-04-29 | Vorrichtung und verfahren zur energieversorgung eines rfid-bauteils |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2425378A1 true EP2425378A1 (de) | 2012-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10716838A Withdrawn EP2425378A1 (de) | 2009-04-30 | 2010-04-29 | Vorrichtung und verfahren zur energieversorgung eines rfid-bauteils |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8733664B2 (de) |
| EP (1) | EP2425378A1 (de) |
| CN (2) | CN104794522A (de) |
| DE (1) | DE102009019657A1 (de) |
| WO (1) | WO2010125158A1 (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9563832B2 (en) * | 2012-10-08 | 2017-02-07 | Corning Incorporated | Excess radio-frequency (RF) power storage and power sharing RF identification (RFID) tags, and related connection systems and methods |
| DE102012221016B4 (de) | 2012-11-16 | 2017-06-22 | Micro-Sensys Gmbh | Schließeinheit, Schließvorrichtung und Verfahren zum Entriegeln und/oder Verriegeln eines Schlosses |
| PL3903897T3 (pl) | 2014-01-09 | 2025-03-03 | Tonies Gmbh | Zabawka |
| EP3020965A1 (de) * | 2014-11-14 | 2016-05-18 | Siemens Aktiengesellschaft | Windgetriebe, Verwendung, Verfahren |
| DE102016000630A1 (de) | 2016-01-25 | 2017-07-27 | Boxine Gmbh | Spielzeug |
| DE102016000631B3 (de) | 2016-01-25 | 2017-04-06 | Boxine Gmbh | Kennungsträger für ein Spielzeug zur Wiedergabe von Musik oder einer gesprochenen Geschichte |
| DE102016218160A1 (de) * | 2016-09-21 | 2018-03-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zum Zuführen von Energie zu einer Mehrzahl von Energiespeicherbauteilen und/oder zum Bereitstellen von in den Energiespeicherbauteilen gespeicherter Energie |
| EP3312773B1 (de) * | 2016-10-20 | 2021-02-17 | Nxp B.V. | Elektronische vorrichtung und leistungsverwaltungsverfahren |
| DE102018110786A1 (de) * | 2018-05-04 | 2019-11-07 | Abb Schweiz Ag | Autonomes drahtloses Sensorgerät |
| EP3598082A1 (de) * | 2018-07-20 | 2020-01-22 | VEGA Grieshaber KG | Messgerät mit nahfeldinteraktionseinrichtung |
| HUE055122T2 (hu) | 2018-07-20 | 2021-11-29 | Grieshaber Vega Kg | Elemmel vagy akkumulátorral mûködtetett terepi eszköz idõinformáció átvitellel |
| DE102018131114A1 (de) * | 2018-12-06 | 2020-06-10 | Sick Ag | Sensorsystem zur Überwachung einer Belegung eines Warenregals |
| JP7623348B2 (ja) | 2019-08-06 | 2025-01-28 | ボクシーン ゲゼルシャフト ミット ベシュレンクテル ハフツング | ユーザーによるダウンロード用のメディアファイルを提供するためのサーバーおよびシステムならびに方法 |
| DE102020204149A1 (de) | 2020-03-31 | 2021-09-30 | Vega Grieshaber Kg | Autarker Sensor |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993020531A1 (de) * | 1992-03-31 | 1993-10-14 | Micro-Sensys Gmbh | Verfahren zur übertragung serieller datenstrukturen für informationsträgeridentifikationssysteme, danach arbeitendes übertragungssystem und informationsträger |
| US6466126B2 (en) * | 2001-01-19 | 2002-10-15 | Motorola, Inc. | Portable data device efficiently utilizing its available power and method thereof |
| US7256695B2 (en) * | 2002-09-23 | 2007-08-14 | Microstrain, Inc. | Remotely powered and remotely interrogated wireless digital sensor telemetry system |
| US7245222B2 (en) * | 2005-01-14 | 2007-07-17 | Farpointe Data, Inc. | Controlling an RFID reader by observing a change in inductance |
| WO2007079491A2 (en) * | 2006-01-05 | 2007-07-12 | University Of Pittsburgh-Of The Commonwealth System Of Higher Education | Multiple antenna energy harvesting |
| US20070279225A1 (en) * | 2006-05-30 | 2007-12-06 | Stefano Pellerano | Non-backscatter passive RFID |
| US8463332B2 (en) * | 2006-08-31 | 2013-06-11 | Semiconductor Energy Laboratory Co., Ltd. | Wireless communication device |
| US7839124B2 (en) * | 2006-09-29 | 2010-11-23 | Semiconductor Energy Laboratory Co., Ltd. | Wireless power storage device comprising battery, semiconductor device including battery, and method for operating the wireless power storage device |
| KR101349880B1 (ko) * | 2006-10-02 | 2014-01-09 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체장치 |
| TWI341495B (en) * | 2006-10-18 | 2011-05-01 | Mstar Semiconductor Inc | Rfid tags, rfid electronic devices and related methods for theft-prevention and data transmission |
| US20090102296A1 (en) * | 2007-01-05 | 2009-04-23 | Powercast Corporation | Powering cell phones and similar devices using RF energy harvesting |
| US20080319912A1 (en) * | 2007-06-22 | 2008-12-25 | Faith Patrick L | Powering financial transaction token with onboard and external power source |
-
2009
- 2009-04-30 DE DE102009019657A patent/DE102009019657A1/de not_active Withdrawn
-
2010
- 2010-04-29 CN CN201510091415.9A patent/CN104794522A/zh active Pending
- 2010-04-29 EP EP10716838A patent/EP2425378A1/de not_active Withdrawn
- 2010-04-29 CN CN201080029395.8A patent/CN102460481B/zh not_active Expired - Fee Related
- 2010-04-29 WO PCT/EP2010/055851 patent/WO2010125158A1/de not_active Ceased
-
2011
- 2011-10-28 US US13/283,753 patent/US8733664B2/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2010125158A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104794522A (zh) | 2015-07-22 |
| US20120132710A1 (en) | 2012-05-31 |
| CN102460481B (zh) | 2015-06-03 |
| DE102009019657A1 (de) | 2011-08-18 |
| WO2010125158A1 (de) | 2010-11-04 |
| CN102460481A (zh) | 2012-05-16 |
| US8733664B2 (en) | 2014-05-27 |
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