CN100394432C - RF electronic label with non-action state and its reading system and control method thereof - Google Patents
RF electronic label with non-action state and its reading system and control method thereof Download PDFInfo
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- CN100394432C CN100394432C CNB2004100307321A CN200410030732A CN100394432C CN 100394432 C CN100394432 C CN 100394432C CN B2004100307321 A CNB2004100307321 A CN B2004100307321A CN 200410030732 A CN200410030732 A CN 200410030732A CN 100394432 C CN100394432 C CN 100394432C
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- 230000009471 action Effects 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title abstract description 3
- 230000007958 sleep Effects 0.000 claims abstract description 80
- 230000006854 communication Effects 0.000 claims abstract description 45
- 238000004891 communication Methods 0.000 claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims description 31
- 230000002618 waking effect Effects 0.000 claims description 19
- 230000005061 slumber Effects 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 1
- 230000000875 corresponding effect Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000008667 sleep stage Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009183 running Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The present invention discloses a radio frequency electronic label with a non-action state, a reading system thereof and a control method thereof. The non-action state is not relevant to a power supply of an electronic label. The non-action state is relevant to the reset of the electronic label. In general, in an embodiment, the electronic label is provided with an antenna, a radio frequency interface and control logic. The radio frequency interface is connected with the antenna and the control logic corresponds to an event to start a dead sleep schema. The dead sleep schema has the non-action state which is not relevant to the power supply and the control logic can provide a following state after the non-action state is over. The following state starts a communication mechanism.
Description
Technical field
The present invention relates to the design of RFID electronic tag, for example, a RFID chip is used for electronic tag communication and management.
Background technology
Traditional RFID electronic tag has the function that some are failure to actuate, and when reading a large amount of RFID electronic tags in a scope, can use this function.After a specific electronic tag had been read, when this electronic tag had power supply, this specific electronic tag can be made as the state of being failure to actuate, and was read once more to avoid this specific electronic tag.The conditional electronic label can provide a non-action state.This non-action state is associated with power supply, for example, need by a reader or a charge storage device, with the power supply of keeping electronic tag (as, a big electric capacity in parallel in the power supply of electronic tag, when the Active Area of electronic tag reader away from keyboard, electronic tag can not lose power supply).This non-action state can be uncorrelated with the electronic tag power supply, for example, utilizes the inner clock pulse of electronic tag, and the input end or the output terminal of blocking-up electronic tag, this inside clock pulse do not need power supply (for example, receiving one " CLOCK " instruction, a series connection switch).When input is blocked, the instruction that this electronic tag can't the identification reader transmits, as U.S. Pat 5963144, this series connection switch can interrupt the connection of antenna, and this tandem tap is a RC circuit.When output is blocked, this electronic tag can continue the instruction that the identification reader transmits, but can't produce corresponding action, as U.S. Patent Application Publication No.2002/0097143A1, and the output signal of its blocking-up output terminal.
Summary of the invention
Fundamental purpose of the present invention provides a kind of this electronic tag of electronic tag that can have non-action state to have a non-action state, and this non-action state and electronic tag supply independent.This non-action state is reseted with this electronic tag and is associated.
Electronic tag of the present invention has an antenna, a radio frequency interface and a steering logic, this radio frequency interface is connected with this antenna, and the corresponding incident initial of this steering logic pattern of being sunk into sleep, this pattern of being sunk into sleep has this non-action state and uncorrelated with power supply, and this steering logic is after this non-action state finishes, can provide a following state, wherein initial this communication mechanism of this following state.Electronic tag has the pattern of being sunk into sleep of being failure to actuate, and this electronic tag can be kept this pattern of being sunk into sleep, even this electronic tag leaves the read range of reader and gets back to the read range of reader once more.This pattern of being sunk into sleep can avoid entering suddenly the communication process of reader and other electronic tag.Can increase the use elasticity of RFID.In addition, the pattern of being sunk into sleep of this electronic tag can be after an instruction that receives reader, and this electronic tag finishes this pattern of being sunk into sleep, and the convenience of use can be provided.Reader need read a plurality of electronic tags usually fast, and this pattern of being sunk into sleep can avoid an electronic tag repeatedly to be read.Can reduce and read electronic tag repeatedly, to increase the efficient of reader system.
System and method of the present invention can reduce the manufacturing cost of electronic tag.
The present invention is described in detail with instantiation below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the electronic tag block scheme with the pattern of being sunk into sleep;
Fig. 2 is a high-frequency electronic label reader and a plurality of block scheme with high-frequency electronic label of the pattern of being sunk into sleep;
Fig. 3 is the operating mode constitutional diagram, the steering logic of this electronic tag pattern of can initial being sunk into sleep;
Fig. 4 is another operating mode constitutional diagram, the steering logic of this electronic tag pattern of can initial being sunk into sleep;
Fig. 5 is the alternate embodiment of Fig. 4;
Fig. 6 is another alternate embodiment of Fig. 4;
Fig. 7 is the mode circuit preferred embodiment of being sunk into sleep of electronic tag.
Description of reference numerals: 100 passive type electronic tags; 110 antennas; 120 radio frequency interfaces; 130 steering logics; 140 mnemons; 320,322,324 communication states; 340,440 patterns of being sunk into sleep; 410 sleep states; 430 isolations; 700 circuit; P1, P2, P3, N4 transistor; C1 electric capacity; The L1 load unit.
Embodiment
As shown in Figure 1, passive type electronic tag 100 is operable in one and is sunk into sleep in the pattern.This electronic tag 100 has an antenna 110, a radio frequency interface 120 and a steering logic 130.This electronic tag also has a mnemon 140.When 100 runnings of this electronic tag at a low-frequency band, during LB (for example 13.56MHz), this electronic tag 100 can be responded to coupling to produce the required power supply of an electronic tag with the coil of a reader.Perhaps UHF band (ultra-high frequency, UHF) or during a microwave rfid system, can be by a RF-coupled generation power supply.This radio frequency interface 120, this steering logic 130 and this mnemon 140 can be integrated and be configured among the IC, for example low-power complementary metal oxide semiconductor integrated circuit (low-powerComplementary Metal-Oxide Semiconductor IC).The simulation part that this radio frequency interface 120 is IC, the numerical portion that this steering logic 130 and this mnemon 140 are IC.This mnemon 140 is non-volatile erasable storeies, and for example, electricity can be removed programmable read only memory (ElectricallyErasable Programmable Read Only Memory).This IC has an antenna tuning capacity and one radio frequency/direct current commutation system, in order to couple this antenna 110.This antenna 110 can provide the required power supply of passive type electronic tag and drive electronic tag.This antenna 110 can be according to the type selecting difference kenels of RFID and the antenna of size.This steering logic 130 has a digital control circuit and a data modulation circuitry, this steering logic 130 pattern of can initial being sunk into sleep, in order to a corresponding incident, for example: this incident is that electronic tag receives that be sunk into sleep instruction or an electronic tag receive a last instruction in the associated instruction sequences.This pattern of being sunk into sleep has a non-action state, and the power supply of this non-action state and electronic tag is uncorrelated.Under this non-action state, but this steering logic 130 and radio frequency interface 120 still are operating state.
This control module 130 can provide a following state, and after this non-action state finished, this electronic tag entered this following state immediately, and wherein, communication mechanism originates in this following state.It is to can be a communication state, an isolation or non-action state once more for this following state, other be described in more detail as after.In addition, it is can make its termination (for example, the natural voltage attenuation of the RC charging circuit among the IC) or receive an instruction by a timer internal to make its termination for this non-action state, for example, receives a full instruction of waking up from a reader.This steering logic 130 can guarantee to be sunk into sleep electronic tag can be in the centre of an instruction sequence or when a reader carries out communication with other electronic tag, reverts to communication.This steering logic 130 can require the beginning of these electronic tag 100 execution command sequences, enters a half asleep.Therefore, when electronic tag 100 can continue to recognize that one wakes instruction up, this electronic tag 100 is not to be in the pattern of being sunk into sleep, but this electronic tag can be ignored other instruction.When this electronic tag entered sleep state, this electronic tag can be in was sunk into sleep pattern and remains on this slumber, took place up to following two situations: (1) this electronic tag receives one and specially wakes instruction (2) timer internal timing up and finish.When this electronic tag when the pattern of being sunk into sleep is waken up, this electronic tag can be carried out other instruction that reader transmits.Therefore, when this electronic tag is in non-action state, can not move, and the power supply of this non-action state and electronic tag is uncorrelated; Even electronic tag leaves read range in one suitable cycle length, and this electronic tag still can be in this non-action state, and this electronic tag inside need not have a power supply can keep this non-action state.When this electronic tag 100 is in this non-action state, but still identification one instruction of this steering logic 130 is come from the pattern of being sunk into sleep is awake in order to drive this electronic tag.This electronic tag is waken up by receiving instruction or inner abort mechanism when coming, and this electronic tag can be taken precautions against the communication process that enters a reader and other electronic tag.Come to guarantee that electronic tag 100 can not waken up at the communication process of a reader and other electronic tag.This pattern of being sunk into sleep is the efficient to reduce the interference between the electronic tag and to increase e-tag reader applicable to passive type RFID and management agreement.
As shown in Figure 2, be a high-frequency electronic tag reader system 200 and a plurality of block scheme with high frequency passive type electronic tag 230 of the function of being sunk into sleep.This reader system 200 has reader 210 and several reader antenna 220.This reader 210 includes a RF Transmit-Receive Unit, a signal processing unit and a control module.In addition, this system 200 also includes a main system (figure do not show), and this main system is connected with this reader, main system can data transmission to electronic tag 230.Those reader antenna can produce the zone that overlaps, and can make reader 21 multichannels read whole high frequency passive type electronic tags 230.Generally speaking, this reader system 200 can provide each electronic tag at least one reader antenna to a group, and this antenna and this electronic tag have the angles of 45 degree to 90 degree.System 200 can read electronic tag, for example uses and searches agreement in one or two minutes, when this electronic tag enters this and is sunk into sleep pattern, can of short durationly lose and read effect.Therefore, in the situation of being failure to actuate, can of short durationly provide the electronic tag power supply at the electronic tag of the pattern of being sunk into sleep.This electronic tag can by one suitably instruction wake up and come, and this electronic tag is in when being sunk into sleep pattern, can ignore other instruction.This pattern of being sunk into sleep can provide reader 210 to have more the effect of elasticity utilization with electronic tag 230 communications and management.When an electronic tag was in this and is sunk into sleep pattern, this reader 210 is continuable to transmit action, but this electronic tag can not wake up and come in the centre of an instruction sequence, and can suddenly not jump into the communication process of other electronic tag and reader.This electronic tag 230 only can be designed to carry out communication in the beginning of an instruction sequence with this reader 210.In addition, electronic tag also has several sleep stages, describe in detail as after, these a plurality of sleep stages can make the communication of electronic tag and management have more selectivity.
Fig. 3 is an operating state Figure 30 0, has the pattern of being sunk into sleep, and the steering logic of this passive type electronic tag can open this pattern of being sunk into sleep of beginning.A plurality of communication states 320,322,324, electronic tag is under this communication mode can carry out an instruction sequence, and communication state 320 is initial communication states.This communication state is switchable to a new model or produces corresponding action after receiving an instruction.For example, one instruction is to search the instruction of the part of agreement in one or two minutes, this reader can carry out the cross-question action to the electronic tag in the read range, and in order to the special value of the inner specific digits of electron gain label position, and electronic tag can respond the corresponding action of this instruction generation.Any communication state all can activate this pattern of being sunk into sleep, as receives a be sunk into sleep instruction or after an instruction sequence finishes, and enters this pattern of being sunk into sleep automatically.This mode 3 40 of being sunk into sleep is non-action states, the power supply of this non-action state and electronic tag is uncorrelated, and this steering logic can provide a following state, after this non-action state finishes, electronic tag can enter this following state, and this following state can be this initial communication state 320.This mode 3 40 of being sunk into sleep can wake this pattern or this pattern of being sunk into sleep is finished by an inner termination mechanism of being sunk into sleep of order fulfillment up receiving one.This wakes instruction up can be designed to the instruction that wakes up that can only wake a specific electronic tag up or be designed to wake up whole electronic tags.When this mode 3 40 of being sunk into sleep finishes the back and enter this initial communication state 320, when the instruction that receives is not the beginning of an instruction sequence, this electronic tag then is in high communication state 322-324, this moment, this electronic tag was failure to actuate, be sunk into sleep pattern and can remain in this initial communication state 320 because this electronic tag has just left, receive the sign on of instruction set up to electronic tag, just can begin start.
Fig. 4 is another operating state Figure 40 0, has the pattern of being sunk into sleep, and the steering logic of this passive type electronic tag can activate this pattern of being sunk into sleep.When a reader activated this electronic tag, this electronic tag promptly entered this sleep state 410.This sleep state 410 makes this electronic tag enter before the communication state 420, must wait until that reader sends a recognition instruction, this electronic tag just can enter this communication state 420, and this recognition instruction can be half instruction of waking up, complete the wake up instruction or the beginning of an instruction sequence.Therefore, this communication state has several different communication states, and is described as Fig. 3, and this sleep state can be made as initial communication state.One electronic tag can enter an isolation mode 430, and this electronic tag is an isolation in read range, and promptly enters this isolation mode at reception one isolated instructions, or the end of an instruction sequence then enters this isolation mode automatically.This electronic tag promptly leaves this isolation mode 430 or gets back to communication state 420 after detecting the beginning of half instruction of waking up, complete wake up an instruction and an instruction set.This sleep state and isolation mode 410, the 430 all power supply with electronic tag are relevant, and this sleep state and isolation 410,430 can be considered equal state or a specific logic state in steering logic, decide on demand.This pattern 440 of being sunk into sleep is as above-mentioned, and this is sunk into sleep pattern after receiving a full instruction of waking up in addition, promptly finishes this pattern of being sunk into sleep.This electronic tag can be distinguished this complete wake up instruction and half awake instruction, and should wake up entirely and instruct complete the waking up that can be a specific electronic tag to instruct or the complete awake instruction of a plurality of electronic tags.For example, the instruction of should half waking up can make electronic tag in the read range from sleep state or isolation 410,430 revert to communication state, and this instruction of waking up entirely can make the electronic tag in the read range revert to communication state from sleep state, isolation or slumber 410,430,440.Other half is waken up or combination utilization of the full instruction of waking up, and all is the demand of looking and selecting for use.Should half awake instruction can make the electronic tag in the read range revert to communication state from sleep state 410, this instruction of waking up entirely can make the electronic tag in the read range revert to communication state from sleep state, isolation or slumber 410,430,440.Should half awake instruction can make the electronic tag in the read range revert to communication state from sleep state 410, this instruction of waking up entirely can make the electronic tag in the read range revert to communication state from sleep state or slumber 410,440.Should half awake instruction can make the electronic tag in the read range revert to communication state from sleep state or isolation 410,430, this instruction of waking up entirely can make the electronic tag in the read range revert to communication state from sleep state, slumber 410,440.Another embodiment, this isolation is not influenced with the instruction of partly waking up by this instruction of waking up entirely can, or has other instruction can finish this isolation in addition, or does not have other instruction (for example can finish this isolation, this isolation has only in electronic tag leaves read range, just can finish).
Fig. 5 is the alternate embodiment of the operating state figure of Fig. 4.In this alternate embodiment, this following state can be an isolation, and for example after the termination of this non-action state, this slumber then changes this isolation into.Fig. 5 is another alternate embodiment of the operating state figure of Fig. 4.This following state can be non-action state once more, for example after the termination of this non-action state, enters this slumber once more.
Fig. 7 is the circuit diagram of the driving circuit 700 of passive type electronic tag slumber.This circuit 700 has power lead (VR), ground wire (GND), output terminal (OUT), a capacitor C 1, a load unit L1, and four transistor N1, P1, P2, P3.When this electronic tag was in general modfel, transistor P1, P3 closed, and point of contact between the two is noble potential, so this output terminal is an electronegative potential.This electronic tag is in when being sunk into sleep pattern, and transistor P1 opens, and makes that point of contact is that electronegative potential and this output terminal are noble potentials.After after a while, 1 pair of load unit L1 discharge of capacitor C, this output terminal is got back to electronegative potential once more at last.Desire finishes this when being sunk into sleep pattern, opens P3, and circuit is reset to original state.This load unit L1 can avoid the danger of too early trigger circuit 700, for example works as the leakage current of the leakage current of P1 greater than P3.In addition, C1 and L1 can be selected according to the chance that this circuit 700 of minimizing leaves this slumber.P1 is a ground connection, compares the traditional cmos logic, and when the P channel connect power lead and N channel ground connection, in case enter this pattern of being sunk into sleep, voltage was added on capacitor C 1 two ends.If voltage disappears subsequently and VR drops to 0 voltage, the voltage at these electric capacity two ends is lower than this ground voltage, so the drain of N channel can discharge to capacitor C 1 forward.Therefore when voltage was replied, circuit will not be in this pattern of being sunk into sleep.Therefore with transistor P1 ground connection, to prevent and to avoid this situation to take place.
Claims (13)
1. radio electronic label with non-action state, it is characterized in that: it comprises:
One antenna;
One radio frequency interface couples antenna; And
One steering logic, by activating the pattern of being sunk into sleep, respond an incident, this pattern of being sunk into sleep has a non-action state, this non-action state by receive one wake up the instruction or inner abort mechanism finishes this non-action state, and this steering logic is after this non-action state finishes, one following state is provided, this following state starts communication mechanism, wherein, this steering logic also provides a sleep state and an isolation, and this sleep state originates in the power supply supply of electronic tag, this isolation originates in and receives an isolated instructions, and all the power supply with electronic tag is relevant with this isolation for this sleep state.
2. radio electronic label as claimed in claim 1, it is characterized in that: following state comprises a plurality of communication states, one initial communication state is arranged in wherein said a plurality of communication state, when this initial communication state received an instruction sequence, other a plurality of communication states began to carry out this instruction sequence.
3. radio electronic label as claimed in claim 2 is characterized in that: this instruction sequence includes one or two fens at least and searches agreement.
4. radio electronic label as claimed in claim 2 is characterized in that: this pattern of being sunk into sleep activates receiving be sunk into sleep an instruction back.
5. radio electronic label as claimed in claim 1 is characterized in that: after receiving a full instruction of waking up, this sleep state, this isolation and this non-action state all can finish; Wake up when instructing but receive half, this non-action state can not finish.
6. radio electronic label as claimed in claim 1 is characterized in that: after receiving a full instruction of waking up, this sleep state, this non-action state all can finish but this isolation can not finish; Receive half and wake up when instructing, this sleep state and this isolation all can finish, but this non-action state can not finish.
7. radio electronic label as claimed in claim 1 is characterized in that: after receiving a full instruction of waking up, this sleep state, this non-action state all can finish but this isolation can not finish; Receive half and wake up when instructing, this sleep state can finish, but this non-action state and this isolation can not finish.
8. radio electronic label as claimed in claim 1 is characterized in that: after receiving a full instruction of waking up, this sleep state, this non-action state and this isolation all can finish; Receive half and wake up when instructing, this is awake, but this non-action state and this isolation can not finish.
9. radio electronic label as claimed in claim 1 is characterized in that: this radio frequency interface has a CMOS analog IC, and this steering logic has a cmos digital IC, and the inside termination mechanism of this non-action state has the RC charge-discharge circuit in the CMOS IC.
10. radio electronic label as claimed in claim 1 is characterized in that: this non-action state is after inside stops, and this following state has an isolation, and this slumber finishes after receiving a full instruction of waking up with this isolation.
11. radio electronic label as claimed in claim 1 is characterized in that: this non-action state is after inside stops, and this following state has a non-action state once more, and this slumber finishes receiving a full instruction back of waking up.
12. radio electronic label as claimed in claim 1 is characterized in that: this antenna has a near field coupling assembly, is arranged at a high frequency band.
13. radio electronic label as claimed in claim 1 is characterized in that: also include a nonvolatile memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100307321A CN100394432C (en) | 2004-04-01 | 2004-04-01 | RF electronic label with non-action state and its reading system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100307321A CN100394432C (en) | 2004-04-01 | 2004-04-01 | RF electronic label with non-action state and its reading system and control method thereof |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810001820A Division CN101290650B (en) | 2004-04-01 | 2004-04-01 | Radio frequency electronic label capable of possessing no-action state and its reading system and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1677427A CN1677427A (en) | 2005-10-05 |
| CN100394432C true CN100394432C (en) | 2008-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100307321A Expired - Lifetime CN100394432C (en) | 2004-04-01 | 2004-04-01 | RF electronic label with non-action state and its reading system and control method thereof |
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| Country | Link |
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| CN (1) | CN100394432C (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5790946A (en) * | 1993-07-15 | 1998-08-04 | Rotzoll; Robert R. | Wake up device for a communications system |
| US5963144A (en) * | 1997-05-30 | 1999-10-05 | Single Chip Systems Corp. | Cloaking circuit for use in a radiofrequency identification and method of cloaking RFID tags to increase interrogation reliability |
| WO2002021709A1 (en) * | 2000-09-06 | 2002-03-14 | Ihp Gmbh Innovations For High Performance/Institut Für Innovative Mikroelektronik | Communications system for transmitting data and method for using a communications system of this type |
| US6525648B1 (en) * | 1999-01-29 | 2003-02-25 | Intermec Ip Corp | Radio frequency identification systems and methods for waking up data storage devices for wireless communication |
-
2004
- 2004-04-01 CN CNB2004100307321A patent/CN100394432C/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5790946A (en) * | 1993-07-15 | 1998-08-04 | Rotzoll; Robert R. | Wake up device for a communications system |
| US5963144A (en) * | 1997-05-30 | 1999-10-05 | Single Chip Systems Corp. | Cloaking circuit for use in a radiofrequency identification and method of cloaking RFID tags to increase interrogation reliability |
| US6525648B1 (en) * | 1999-01-29 | 2003-02-25 | Intermec Ip Corp | Radio frequency identification systems and methods for waking up data storage devices for wireless communication |
| WO2002021709A1 (en) * | 2000-09-06 | 2002-03-14 | Ihp Gmbh Innovations For High Performance/Institut Für Innovative Mikroelektronik | Communications system for transmitting data and method for using a communications system of this type |
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| Publication number | Publication date |
|---|---|
| CN1677427A (en) | 2005-10-05 |
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