WO2013150119A1 - Rfid transponder with signalling device - Google Patents
Rfid transponder with signalling device Download PDFInfo
- Publication number
- WO2013150119A1 WO2013150119A1 PCT/EP2013/057145 EP2013057145W WO2013150119A1 WO 2013150119 A1 WO2013150119 A1 WO 2013150119A1 EP 2013057145 W EP2013057145 W EP 2013057145W WO 2013150119 A1 WO2013150119 A1 WO 2013150119A1
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- WO
- WIPO (PCT)
- Prior art keywords
- control
- control unit
- rfid transponder
- rfid
- predetermined period
- Prior art date
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- 230000011664 signaling Effects 0 abstract claims description title 34
- 238000004146 energy storage Methods 0 claims description 36
- 230000003287 optical Effects 0 claims description 4
- 238000000926 separation method Methods 0 claims description 2
- 239000004452 animal feeding substances Substances 0 abstract 1
- 230000035611 feeding Effects 0 abstract 1
- 239000000047 products Substances 0 claims 1
- 238000004891 communication Methods 0 description 17
- 230000015654 memory Effects 0 description 16
- 238000000034 methods Methods 0 description 10
- 238000003860 storage Methods 0 description 5
- 239000003990 capacitor Substances 0 description 3
- 238000007600 charging Methods 0 description 3
- 230000000875 corresponding Effects 0 description 3
- 230000001808 coupling Effects 0 description 3
- 238000010168 coupling process Methods 0 description 3
- 238000005859 coupling reaction Methods 0 description 3
- 230000002950 deficient Effects 0 description 2
- 230000000694 effects Effects 0 description 2
- 230000004044 response Effects 0 description 2
- 241001296096 Probles Species 0 description 1
- 230000003213 activating Effects 0 description 1
- 230000002238 attenuated Effects 0 description 1
- 239000000969 carrier Substances 0 description 1
- 230000001419 dependent Effects 0 description 1
- 230000018109 developmental process Effects 0 description 1
- 230000004064 dysfunctions Effects 0 description 1
- 230000001965 increased Effects 0 description 1
- 230000002045 lasting Effects 0 description 1
- 239000010912 leaf Substances 0 description 1
- 230000036961 partial Effects 0 description 1
- 230000007958 sleep Effects 0 description 1
- 230000001702 transmitter Effects 0 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING; COUNTING
- G06K—RECOGNITION OF DATA; 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
- G06K19/0702—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 including a battery
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING; COUNTING
- G06K—RECOGNITION OF DATA; 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
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07701—Constructional details, e.g. mounting of circuits in the carrier the record carrier comprising an interface suitable for human interaction
- G06K19/07703—Constructional details, e.g. mounting of circuits in the carrier the record carrier comprising an interface suitable for human interaction the interface being visual
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING; COUNTING
- G06K—RECOGNITION OF DATA; 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
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
Abstract
Description
RFID TRANSPONDER WITH SIGNALING DEVICE
The invention relates to a passive RFID transponder with a control and control unit and an energy store and to a method for operating such an RFID transponder.
A preferred field of use of passive RFID transponders is, for example, the detection of the passing of persons or objects at checkpoints. Passive RFID transponders draw their operating energy from the radio signals of a
Interrogator (transmitter). Due to lack of its own power supply passive RFID transponders are robust, maintenance-free ¬ and low-cost components that enable use in high volume applications. US 2008/0136596 AI includes a passive RFID tag comprising a sensor unit for detecting the environmental conditions of the tag, a volatile memory, a nonvolatile memory and a control unit which stores the data of the sensor unit in the volatile memory and these data under predetermined conditions transferred to the non-volatile memory. The RFID tag may include a power supply unit that powers the tag under predefined conditions. Furthermore, the RFID tag includes a power ¬ receiving unit which receives the supply voltage given by the RF signal, and a current monitoring unit comprising the
The strength of the received RF signal measures and, depending on the measured strength of the RF signal, supplies the RFID tag with power from the integrated power supply unit or with the power recovered from the RF signal. DE 10 200 4007 106 B4 shows a circuit arrangement for an RFID transponder with a receiving device for
Receiving an electrical control signal. Furthermore, a first memory means having a first output for storing a control state (Q) of the circuit arrangement in dependence on the control signal is present. Likewise, a Interconnected to the first output of the first memory means second storage means is provided with an output for keeping the STEU ¬ erzustands case of lack of supply voltage of the circuit arrangement. Between the first output and the second storage means, a field effect transistor connected in the form of a diode with a short-circuited gate-source connection is arranged. The first storage means has a data input. The signal present at the data input signal is transferred to the second storage means in response to the control ¬ signal which is supplied from an input circuit of the circuit arrangement ¬, and the control state of the two ¬ th memory means. The receiving device is designed to receive electromagnetic energy for supplying at least the circuit arrangement.
EP 1 732 026 B1 shows a circuit arrangement for RFID transponders. For storing electrical energy, a capacitor is used, which is connected in series with a switching means and in parallel with the output of the storage means for storing a control state (Q) serving first storage means. The switching means controls the charging of a second memory ¬ means with electrical energy.
In EP 1 481 366 B1, a passive RFID transponder is described, which maintains its state after a temporary failure of the supply voltage. The transponder comprises a state holding cell which is connected to a digital status machine and is adapted to maintain the state ¬ information during a loss of energy due to a lack of reception of the requesting RF signal by the RF receiving part. The state hold cell has an OR gate having a first input terminal operatively connected to receive a voltage corresponding to the state information, and a second input terminal
An input terminal coupled to a capacitor via a voltage comparator circuit that provides state information to the digital state machine. Of the
Capacitor (corresponding to the state Informa tion corresponds ¬) charged by the voltage.
US 7,414,517 B2 shows an RFID transponder with a volatile memory for storing data, a first
Power source for feeding a transponder connected to the circuit, which comprises the volatile memory. If the power fails, it ensures that the data in the volatile memory is retained for a predefined amount of time. The first power source will go through
RF signal fed. The transponder may include a second electrical ¬ source which supplies the memory upon failure of the first power source. WO 2007/015169 A2 describes an RFID unit comprising a memory chip, an antenna mounted on a carrier and a photocell mounted on the carrier, which is connected to the memory chip and this with energy
provided. The data of the memory chip can be displayed on an internal display or an external display of a mobile or fixed unit. To do this, the photocell must be exposed to a light source to activate the memory chip. The data transmission to the fixed unit takes place via an RF transmission via Bluetooth. The data can be stored before or after the application of the RFID device in the memory chip. As a major advantage of this RFID unit, reference is made in WO 2007/015169 A2 to the fact that no separate RFID read / write unit is required for reading out the information contained on the memory chip.
DE 10 2006 009 451 A1 shows a game character comprising a transponder, an action display and a combined logic / memory unit, which is connected between the transponder and the action display. The game character allows the transponder to transfer data into the combined logic / memory unit in order to control the action display, for example, based on the data stored there. The transponder can be both active and passive. When using an active RFID unit, an additional power source is available. By connecting the logic / memory unit with an energy storage is
achieved that the action display even with short-term
Removal of the character from the game board remains activated.
In numerous sports applications, a passive RFID transponder is assigned to each participating athlete. If these athletes pass RFID read / write units assigned to control stations, then the pass time and the pass time are passed
Control location identifying location code recorded. In certain applications, the athlete is required to monitor and control the identification process that has taken place. For this purpose, it is known to equip the RFID read / write unit with suitable signaling devices. A disadvantage of this
Solution is that the passing athlete after
Leave the checkpoint has no lasting or SUST ¬ loin control over the made successful identification process. Another disadvantage is that the Signals of the RFID read / write unit can not be clearly assigned to the own RFID transponder if at the time of passing the checkpoint several athletes communicate at the same time or very quickly via their RFID transponder with the RFID read / write unit. Particularly proble ¬ matically if a plurality of RFID read / write units are arranged in a narrow range and assigned to the individual users RFID transponders communicate virtually simultaneously using this RFID read / write units. This results in a large number of signals in a narrow
Area. In such a situation it is for the individual user, especially with acoustic signals extremely Schwiering ¬ rig, these signals of the RFID read / write units of their own action (conduct of a successful communication with the RFID read / write unit) assigned and thus to control the success of the action.
An object of the present invention is to provide a passive RFID transponder, with which a user information about a successful passing of a control point, which communicates with the RFID transponder, over a certain period even after leaving the
Receives control.
To achieve the object of the invention is a passive RFID transponder according to the appended claim. 1
The passive RFID transponder according to the invention is characterized in particular by the presence of an activatable via the control and control unit signaling device. This signaling device is for a predetermined period signaling the termination of a
(successful) RFID work cycle (ie successful communication between the RFID transponder and the RFID transponder) Control office). The user who carries the RFID transponder with him, for example when completing a running track, thus receives after a predetermined period of time
Passing a checkpoint constantly signaling that the RFID duty cycle was successful in passing the checkpoint, i. all necessary data could be exchanged. The user needs to control the
successfully executed communication between transponder and control point, ie not in the transmission range of
Control body remain, but may leave this already traveled.
An energy store provided for this purpose, for example a battery or a rechargeable battery, initially primarily supplies the signaling device, but preferably also the
Control and control unit of the RFID transponder over the predetermined period of time with the necessary electrical energy.
According to the invention, a passive RFID transponder
provided with which a user information about a successful passing of a control point, which communicates with the RFID transponder, over a certain
Period even after leaving the inspection post.
According to the invention, a passive RFID transponder with an energy store for further energy supply of
Signaling device used after completion of an RFID duty cycle. The energy storage is thus not primarily for supplying the control and control unit during the RFID cycle. At continuing
Embodiments, the energy storage in addition to
Supply the control and control unit serve when the supply voltage obtained from the RF field reaches a minimum required operating value, but then, for. because of
Disturbances drop below the required operating value, so that the full implementation of communication
would be at risk.
An advantage of the solution according to the invention is the fact that the user by means of signaling device even after leaving the impact or transmission range of an existing at a checkpoint RFID read / write unit information about a successful passing of the control point is available. This is made possible that the serving for activating the signaling device command and control unit continues to be supplied after completion of the communication with an RFID read / write unit by means of integrated Ener ¬ giespeichers over a predetermined period of time. The finite energy supply of the energy storage limits the operating time of the control and control unit and, associated with it, the operating time of the signaling device. In any case, the primary function of the passive RFID transponder remains independent of the state of the energy store. The capacity provided by the energy store is spared, since the primary function of the RFID transponder is furthermore preferably fed from the energy which is obtained from the RF field of the RFID read / write unit.
In accordance with a particularly preferred embodiment, the RFID transponder has a self-locking transistor switch for completely disconnecting the energy accumulator from the control and control unit. By thus reali ¬ catalyzed minimize power consumption in sleep mode ensures that the limited energy storage in materiality borrowed only for the operation of the signaling device
Use and thus a maximum operating time can be achieved. The primary function of the passive RFID transponder remains - as mentioned - even with completely decoupled energy storage obtained. In an expedient embodiment, a first unidirectional control path opens the transistor switch and connects the energy store to a measuring and supply connection of the control and control unit when a supply voltage obtained from the RF (Radio Frequency) field of an RFID read / write unit a minimal necessary
Operating value (ie one at least for the start of the
Processing required minimum value of the operating voltage) in order to set the passive RFID transponder in operation. This design becomes a continuous one
Supply the control and control unit via a
predetermined period, which is dependent on the capacity of the energy giespeichers enabled. For since the Kapa ¬ capacity of the energy storage tested and was assessed as sufficient ¬ tet, the energy storage for a predetermined period of time can also take over the supply of the monitoring and control unit. It is advantageous to carry out an examination of the function ¬ ability of the energy storage means of monitoring and control unit while the RFID work cycle. In this way, discharged or defective energy storage can be identified. In this context, it is expedient if the control and control unit sends an alarm signal to an RFID read / write unit after checking the operability of the energy store and in the event of a negative test result, and in any case blocks the commissioning of the signaling device, possibly also the RFID transponder disabled. As a result, information about defective transponders is promptly recorded at a central location, so that corresponding
Maintenance measures can be initiated. In addition, it ensures that only transponders are operated with functional energy storage, if this is done by the user is desired. But depending on the application, it may also be before ¬ Trains t to make the RFID transponders in operation, even if the signaled ¬ tion of the current state is no longer possible due to depleted energy storage. The RFID transponder is then operated in the usual passive mode.
In a preferred embodiment, the control and control unit activates a second control ¬ path for a predetermined period after completion of the RFID duty cycle and operability of the energy storage. The second control path is used to open the transistor switch. After vorbestimm ¬ th period of the second control path is deactivated and the transistor switches off. This ensures that the energy store is disconnected after the predefined period of time from the control and control unit, and thus energy is taken out for the operation of the signaling device only over a limited period of time. The control and control unit is preferably a microcontroller. Microcontrollers are inexpensive, have a compact design and can be adapted by its programmability prob ¬ lemlos to various application conditions and applications.
According to an expedient embodiment, the signaling device can output an optical, acoustic and / or tactile signal. These signal types are equally suitable for signaling a successful communication process of the RFID transponder. Which output signal is ultimately preferred depends on the specific field of application.
Furthermore, the use of a rechargeable energy storage is advantageous. The charging of the energy storage takes place eg during the RFID cycle by the RF field of the RFID read / write unit. In this way, the energy required for the subsequent signaling can be provided with little effort. Likewise, a recharge can be made via a solar cell or a separate charger.
The invention also relates to a method for operating a passive RFID transponder according to appended claim 10. The RFID transponder used in the method according to the invention has a control and control device and a
Energy storage on. The inventive method comprises the following steps: First, a requesting RF signal is received. The requesting RF signal can be transmitted, for example, from an RFID read / write unit arranged at a checkpoint. From this RF signal, the supply voltage for the passive RFID transponder is generated in a conventional manner. The supply voltage obtained from the RF signal is subsequently checked to see if it reaches a minimum required operating value. As soon as such an operating value is reached, the supply of the control and control unit via the integrated energy ¬ memory either completely taken over or at least buffered by this. This ensures that during the entire RFID cycle (communication process
between RFID transponder and RFID read / write unit)
Control and control unit is powered and a signaling device can be activated. Supply gaps, for example as a result of an attenuated RF signal, can thus be easily cushioned and the communication process can be completed successfully.
During the communication process can be carried out by the control and control unit, a function verification of Energiespei ¬ chers. If the functional test leads to a negative result, it is advantageous if the control and Control unit reports this fact the RFID read / write unit and as a result a warning signal is output to the RFID read / write unit. At the same time completeness, ¬-ended or partial deactivation of no longer fully functional RFID transponder can be done. After completion of an RFID work cycle, the supply of the control and control unit is carried out over a subsequent, predetermined period of time by the energy storage in order to take the signaling device into operation can. This period is limited by the energy contained in the energy store at this time or a predetermined period of time. During this predetermined period of time, a signal indicating correct termination of the RFID operating cycle is output at the RFID transponder via the signaling device. This may be, for example, an optical, acoustic or tactile signal. The issued signal gives a user, even after leaving a checkpoint, the opportunity to check whether a successful communication between the transponder and an RFID read / write unit has taken place. After the predetermined period, the control and control unit is disconnected from the energy storage to limit the removal of energy.
Further advantages, details and developments emerge from the following description of a preferred
Embodiment of the invention with reference to the drawing. The single FIGURE shows a circuit arrangement of a passive RFID transponder according to the invention. The passive RFID transponder according to the invention comprises a
Control and control unit 01, which is preferably designed as a microcontroller. The control and control unit 01 serves primarily for the realization of the conventional transponder function, ie it controls the communication with a RFID read / write unit 02, which will not be described here.
As is well known, in passive RFID transponders, the power supply via the RF field, which is provided by the RFID read / write unit 02, as long as the passive RFID transponder in the coupling area of RFID write / Reading unit 02 is located. As soon as the RFID transponder leaves this coupling area, this energy source is no longer available. The of the RFID
Read / write unit 02 provided energy may vary depending on the quality of the received signal from the RFID transponder. The control and control unit 01 is connected via a self-locking ¬ transistor switch 03 with an energy storage 04. By means of transistor switch 03 of the energy storage can be completely quiescent current separately from the control and STEU ¬ ereinheit 01 04th The operation of such a switch is known in principle to the person skilled in the art, so that only schematic circuit diagrams are shown in the FIGURE. For this purpose, a first unidirectional control path 06 is present, which opens the transistor switch 03, in particular by applying a voltage to the GATE connection of a MOSFET, and thereby connects the energy store 04 with a measuring and supply connection of the control and control unit 01, if a supply voltage obtained at the connection 05 from the RF field of the RFID read / write unit 02 reaches a minimum necessary operating value. Without this additional supply from the energy storage device the risk would be that falls below this operating value of the communi ¬ nikationsvorgang between RFID read / write unit 02 and RFID transponder can not be completed correctly.
At the same time, however, the energy storage is only then activated and claimed, if it is ensured by receiving a rea ¬ accordingly strong RF signal that the RFID transponder is located in the working range of the RFID read / write unit 02.
During the communication process with the RFID read / write unit 02, it is advantageous if the monitoring and control unit 01 first checks the level of the voltage and the Leis ¬ processing capability of the energy storage 04th With a negative test result in a preferred execution ¬ form an alarm signal can be output to the RFID read / write unit 02. In addition, the RFID transponder can be deactivated in this case. By outputting a Alarmsig ¬ Nals at the RFID read / write unit 02 can be promptly advised of dysfunction so that appropriate
Maintenance measures can be taken at short notice. Thus, the reliability of the overall system can be significantly increased. If the review of the energy storage 04 has led to a posi ¬ tive result, a second control path 07 is activated by means of control and control ¬ unit 01 following the communication process. This second control path 07 in turn opens the transistor switch 03 and thereby connects the control and control unit 01 with the energy storage device 04. In this way, it is ensured that the
Control and control unit 01 is supplied with energy after leaving the coupling ¬ area with the RFID read / write unit 02. After completion of the communication process, the control and control unit 01 activates a signaling device 08, for example an LED, over a predetermined period of time. The duration of this period is predetermined to a reasonable extent in the respective application and is limited upwards by the energy contained in the energy storage 04.
The signaling device 08 is used to signal the termination of the communication process with the RFID read / write unit 02. Thus, the user has a direct display ¬ possibility for a successfully completed communication at the RFID transponder available. The signaling device 08 can output, for example, optical, acoustic or tactile signals. The signaling process is terminated by the control and control unit 01 after the vorbestimm ¬ th period the second control path 07 is deactivated and thus the transistor switch 03 blocks.
According to a preferred embodiment, the energy store 04 is rechargeable. The charging of the energy store 04 preferably takes place during the communication process with the RFID read / write unit 02 by its RF field. Alterna tively ¬ a long-life battery or an accumulator with a larger capacity can be used as an energy storage.
LIST OF REFERENCE NUMBERS
01 - control and control unit
02 - RFID read / write unit
03 - transistor switch
04 - Energy storage
05 - supply voltage
06 - first control path
07 - second control path
08 signaling device
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012102941.5 | 2012-04-04 | ||
| DE201210102941 DE102012102941A1 (en) | 2012-04-04 | 2012-04-04 | Passive RFID transponder with signaling device and method for operating such an RFID transponder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013150119A1 true WO2013150119A1 (en) | 2013-10-10 |
Family
ID=48325591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2013/057145 WO2013150119A1 (en) | 2012-04-04 | 2013-04-04 | Rfid transponder with signalling device |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102012102941A1 (en) |
| WO (1) | WO2013150119A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014109172A1 (en) | 2014-07-01 | 2016-01-07 | Sportident Gmbh | Compass arrangement with RFID transponder |
| DE102015111389B4 (en) | 2015-07-14 | 2019-08-14 | Infineon Technologies Ag | Circuitry |
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| US6454172B1 (en) * | 1997-02-21 | 2002-09-24 | Rohm Co., Ltd. | IC card having a display for displaying a response state |
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| US20060017573A1 (en) * | 2004-07-26 | 2006-01-26 | Yamaha Coroporation | RFID tag-containing apparatus and RFID tag-containing seal |
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| DE102004007106B4 (en) | 2004-02-13 | 2011-04-07 | Atmel Automotive Gmbh | Circuit arrangement, in particular for use in RF transponders or remote sensors |
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| WO2007015169A2 (en) | 2006-07-10 | 2007-02-08 | Moosa Eisa Al Amri | A self-display rfid tag device with a display unit or bluetooth technology to send / receive data |
| KR100833511B1 (en) | 2006-12-08 | 2008-05-29 | 한국전자통신연구원 | Passive tag with volatile memory |
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2012
- 2012-04-04 DE DE201210102941 patent/DE102012102941A1/en not_active Ceased
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2013
- 2013-04-04 WO PCT/EP2013/057145 patent/WO2013150119A1/en active Application Filing
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| US6454172B1 (en) * | 1997-02-21 | 2002-09-24 | Rohm Co., Ltd. | IC card having a display for displaying a response state |
| US20020014963A1 (en) * | 1999-07-29 | 2002-02-07 | Trosper Scott T. | Radio frequency identification devices, remote communication devices, identification systems, communication methods, and identification methods |
| US20040056083A1 (en) * | 2000-07-17 | 2004-03-25 | Hans Graf | Display device for a portable data carrier |
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| US20080220721A1 (en) * | 2007-03-09 | 2008-09-11 | Downie John D | Passive RFID elements having visual indicators |
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| DE102012102941A1 (en) | 2013-10-10 |
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