CN103854000A - Active radio frequency tag communication method - Google Patents
Active radio frequency tag communication method Download PDFInfo
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- CN103854000A CN103854000A CN201210514627.XA CN201210514627A CN103854000A CN 103854000 A CN103854000 A CN 103854000A CN 201210514627 A CN201210514627 A CN 201210514627A CN 103854000 A CN103854000 A CN 103854000A
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Abstract
The invention discloses an active radio frequency tag communication method and an active radio frequency tag. The problems that the active radio frequency tag is placed in a coverage area of a radio frequency antenna for a long time, the tag can be aroused at once, and accordingly battery power consumption is excessive in the prior art are solved. The method includes the steps that the active radio frequency tag is aroused and then is in communication with the corresponding radio frequency antenna; after the communication process is completed, the data arousing function is closed, the closing duration is set, and the tag enters into a dormant state; after the closing duration is reached, the data arousing function is enabled. By means of the active radio frequency tag communication method, when the tag is placed in the coverage area of the same radio frequency antenna for a long time, the tag cannot be aroused immediately, so that the battery power consumption is reduced, and energy consumption is lowered.
Description
Technical field
The present invention relates to REID, relate in particular to a kind of active radio frequency label communication means and active radio frequency label.
Background technology
Radio-frequency (RF) identification (RFID, Radio Frequency Identify) is a kind of contactless automatic identification technology, is automatically identified destination object and is obtained related data by radiofrequency signal, and identification work need not manual intervention, can work in various rugged surroundings.RFID technology can be identified high-speed moving object and can identify multiple labels simultaneously, swift and convenient to operate.
In general, complete radio-frequency recognition system is mainly made up of radio-frequency (RF) tag, radio frequency read-write equipment and radio-frequency antenna and background computer system.Whether there is powered battery according to radio-frequency (RF) tag inside, radio-frequency (RF) tag can be divided into active radio frequency label and passive RF label.
Passive RF label inside does not have powered battery, the electromagnetic wave that relies on read write line to send carrys out work, therefore Maintenance free in use procedure, uses simply, but the transmission range of passive RF label is near, antijamming capability is poor and storage space function singleness.
There is powered battery active radio frequency label inside, can rely on the energy of self to transmit, and therefore transmission range is far away, antijamming capability is strong, storage space is larger, is used widely.Active radio frequency label comprises high-frequency radio frequency circuit, Single Chip Microcomputer (SCM) system, battery and antenna, be illustrated in figure 1 active radio frequency label structural representation in prior art, battery is responsible for to Single Chip Microcomputer (SCM) system and high-frequency radio frequency circuit supply, Single-chip Controlling high-frequency radio frequency circuit, radio frequency is by the antenna bag that transmits and receive data, and communicates with corresponding radio-frequency antenna.
The typical application of active radio frequency label is exactly to be applied to multilane Free-flow system, and multilane Free-flow system is a kind of quick ETC technology that any charge roadblock is not set, and vehicle need not slow down, and just can automatically complete fee collection.But along with the consumption of label internal cell electric weight, need to change termly battery or charging, this has brought new problem to the use of active radio frequency label, how to extend the impulse discharge life-span of active radio frequency label internal cell, reduces the power consumption of active radio frequency label.In order to reduce the average power consumption of active radio frequency label, label is generally in dormant state, and high-frequency radio frequency circuit is not worked.Be illustrated in figure 2 the communication process that existing active radio frequency label is concluded the business in multilane Free-flow system:
Step S201: within the scope of vehicle enters radio-frequency antenna time, wake active radio frequency label up, make label in running order.
Step S202: receive the packet that corresponding radio-frequency antenna sends, carry out the dissection process of packet, start the communication process of charge transaction.
Step S203: judge in the process of exchange of charging that whether transaction is successful, directly enter dormancy if success forwards step S205 to, wait for next time and wake up.If transaction is success not, forward step S204 to.
Step S204: judge whether transaction is overtime, forwards step S205 to make label directly enter dormancy if overtime, again forwards step S202 to carry out the reception of packet if not overtime.
Step S205: label dormancy.
In order to reduce the power consumption of active radio frequency label, after finishing, the communication process of whole transaction enters the dormant state of power saving, but the data arousal function of active radio frequency label is always in running order, if active label is always in the scope in antenna cover, it still can receive the packet that radio-frequency antenna sends, and label is waken up at once, judge whether again to conclude the business, if need be in transaction, label enters dormant state, the circulation so going round and beginning again.
Inventor, in enforcement process of the present invention, finds the method that above-mentioned existing active radio frequency label communicates, and has following technical matters:
After the communication process of transaction finishes, but active radio frequency label is still in the coverage in radio-frequency antenna time, label can be waken up at once, and may be being waken up repeatedly, constantly carry out the reception of packet, but in same radio-frequency antenna coverage, only need to carry out the processing of a data stream, so it is skimble-skamble repeatedly waking the electric weight of label consumption up, cause battery power consumption too much, battery life is too short, does not fundamentally solve the problem that reduces power consumption.
Summary of the invention
The object of this invention is to provide a kind of active radio frequency label communication means and system, to solve in prior art active radio frequency label for a long time when the radio-frequency antenna coverage, label is waken up the problem that causes battery power consumption too much at once.
The object of the invention is to be achieved through the following technical solutions:
One aspect of the present invention provides a kind of active radio frequency label communication means, and the method comprises:
After active radio frequency label is waken up, communicate with corresponding radio-frequency antenna;
In the time that this communication process finishes, close data arousal function and arrange and close duration, enter dormant state;
Described in reaching, close after duration, enable described data arousal function.
The present invention also provides a kind of active radio frequency label on the other hand, and this active radio frequency label comprises:
Data Stream Processing unit, after being waken up when active radio frequency label, communicates with corresponding radio-frequency antenna;
Data arousal function closing unit, in the time that this communication process finishes, closes data arousal function, enters dormant state;
Duration control module, closes the duration of closing of data arousal function for described data arousal function closing unit is set, when the time reaches described data arousal function and closes after duration, enable described data arousal function.
Active radio frequency label communication means provided by the invention and system reach following beneficial effect: in the time that active radio frequency label completes communication process, close data enable function and arrange and close duration, make in the time that label is for a long time in same radio-frequency antenna coverage, can not be waken up at once, save battery power consumption, reduced energy consumption.
Brief description of the drawings
Fig. 1 is active radio frequency label structural representation in prior art;
Fig. 2 is the communication flow diagram that existing active radio frequency label is concluded the business in multilane Free-flow system;
Fig. 3 is active radio frequency label communication means process flow diagram provided by the invention;
The communication process process flow diagram that Fig. 4 concludes the business in multilane Free-flow system for the active radio frequency label that the embodiment of the present invention provides;
The active radio frequency label formation block diagram that Fig. 5 provides for the embodiment of the present invention.
Embodiment
The invention provides a kind of active radio frequency label communication means, active radio frequency label is waken up afterwards and completes one time communication process, close data arousal function and arrange and close duration, enter dormant state, make in the time that label is for a long time in same radio-frequency antenna coverage, can not be waken up at once, save battery power consumption, reduce energy consumption.
The embodiment of the present invention one provides a kind of active radio frequency label communication means, realization flow as shown in Figure 3:
Step S301: be waken up after active radio frequency label enters the coverage of radio-frequency antenna.
Step S302: after active radio frequency label is waken up, communicate with corresponding radio-frequency antenna.
Step S303: in the time that this communication process finishes, close data arousal function and arrange and close duration, enter dormant state;
Step S304: close described in reaching after duration, enable described data arousal function.
The above-mentioned active radio frequency label communication means that the embodiment of the present invention one provides, in the time that active radio frequency label completes a communication process, close data arousal function and enter dormant state, make in the time that label is for a long time in same radio-frequency antenna coverage, can not be waken up at once, save battery power consumption, reduce energy consumption, close duration owing to being provided with data arousal function simultaneously, reach and close after duration, enable data arousal function, while ensureing that active radio frequency label enters into the coverage of next radio-frequency antenna, can be waken up in time, still can normally carry out Data Stream Processing.
Preferably, in the embodiment of the present invention, before active label enters dormant state, timer can be set, close duration by set timer, and in duration, close data arousal function in closing of arranging.By timer is set, the duration of closing of data arousal function can be set on the one hand, can utilize on the other hand the interrupt function enable data arousal function of timer, in the time reaching the time of set timer, enable data arousal function at once.
The embodiment of the present invention two is applied to multilane Free-flow system taking above-mentioned active radio frequency label communication means and is elaborated as example, as shown in Figure 4, does not certainly regard it as and is limited, and the method can be applicable to various scenes.
Step S401: within the scope of vehicle enters radio-frequency antenna time, label is waken up, and in running order.
Step S402: the packet that received RF antenna sends, carry out the dissection process of packet, start the communication process of charge transaction.
Step S403: judge in the process of exchange of charging that whether transaction is successful, judge whether the treatment scheme of data stream finishes, if success forwards step S404 to, if not success of transaction forwards step S406 to.
Step S404: close data arousal function.Owing to having closed data arousal function, make label directly enter dormant state, at this moment the microwave signal of radio-frequency antenna cannot be waken label up, and because label has entered dormant state, has reduced battery power consumption.
Step S405: timer is set before dormancy, closes duration T by this set timer data arousal function, active radio frequency label can not be waken up within the T time, after T second, data arousal function can wake label up.The value of T can be that user sets arbitrarily according to actual conditions, too large but the value of T can not arrange, otherwise can miss the chance of again concluding the business with other radio-frequency antenna; Same T arranges too short, and the increased frequency that makes label be waken up, causes power consumption larger.
Step S406: judge whether transaction is overtime, judge that whether this communication process is overtime, forward step S407 if overtime to and make label directly enter dormancy, again forward step S202 to if not overtime and carry out the reception of packet, proceed the treatment scheme of data stream.
Step S407: label dormancy.
Preferably, when timer reached after the time period of setting, label can be waken up by data arousal function, after waking up, label is resolved the ID(IDentity of radio-frequency antenna, identify label number), if resolving the radio-frequency antenna ID obtaining is the radio-frequency antenna of Successful Transaction last time, be set to traffic congestion state, and timer is set, close data arousal function, enter dormant state, repeating step S404 is to the process of step S407, when not identical, show to carry out different transaction, receive the packet that current radio-frequency antenna sends, the front communication process of the trade of going forward side by side.
Be illustrated below in conjunction with concrete practical application, active radio frequency label major parameter is as follows: quiescent current 15uA, average current 30mA when work, battery capacity 1500mA/h, battery can be used ratio 70%, the time period of closing data arousal function when dormancy is 5s, while being waken up rear discovery still for same radio-frequency antenna ID, and about 5ms of working time.
If label is always in radio-frequency antenna range of signal, electric current will keep 30mA always, and tag battery electric weight is by 1500*0.7=1050mA/h, can maintain 1050/30=35h.
If close data arousal function dormancy 5s after waking up at every turn, waking the working time up is 5ms, has so 1/1000 time in running order in 35h, and all the other times are in dormant state.Consumes power is about: 35* (0.001*30+0.999*0.015)=1.57mA/h.
Can see the reduction power consumption design proposal by the embodiment of the present invention, owing to closing data arousal function dormancy 5s after waking up, in this time period, do not respond wake-up interrupts, label power consumption in extreme traffic congestion situation accounts for the 1.57/1050=1.5% of battery electric quantity, has well met the requirement that reduces power consumption in practical application.
By technique scheme of the present invention, obtain the method for designing that a kind of active radio frequency label economizes on electricity and reduces power consumption in multilane Free-flow system, solve label in multilane Free-flow system applies, make vehicle for a long time under radio-frequency antenna coverage when when traffic congestion, power consumption too much, the too short problem of battery life.And when timer reached after the time period of setting, judge whether current radio-frequency antenna ID is the radio-frequency antenna ID of Successful Transaction last time, in the time being the radio-frequency antenna ID of last transaction, continue to close described data arousal function and timer is set, enter dormant state, can not wake up at once and close label after label at once, and because only just wake label after the time period of setting up reaching, avoid repeatedly repeatedly waking up label, reached the object that reduces power consumption.
The embodiment of the present invention three also provides a kind of active radio frequency label to reduce the system of power consumption, and as shown in Figure 5, this system comprises the formation of this system:
Data Stream Processing unit 51, after being waken up when active radio frequency label, communicates with corresponding radio-frequency antenna, and carries out the treatment scheme of data stream.
Data arousal function closing unit 52, in the time that this communication process finishes, closes data arousal function, enters dormant state.
Duration control module 53, closes the duration of closing of data arousal function for described data arousal function closing unit is set, when the time reaches described data arousal function and closes after duration, enable described data arousal function.
Wherein, device when duration control module 53 can be certain, before entering dormant state at active radio frequency label, sets the duration of cutting out described radiofrequency signal response function, and described in reaching, closing after duration, enable described radiofrequency signal response function by described timer.
Preferably, this active label also comprises a judging unit, enables after described data arousal function, in the time again waking described active radio frequency label up for described duration control module 53, to communicate the radio-frequency antenna ID of process identical with the last time to judge current radio-frequency antenna Identity Code ID
When identical, close described data arousal function and timer is set, enter dormant state;
When not identical, communicate with current radio-frequency antenna, and carry out the treatment scheme of data stream.
Concrete, the process that described Data Stream Processing unit 51 carries out Data Stream Processing comprises:
Judge whether described communication process finishes;
In the time that described communication process finishes, close described data arousal function, arrange and close duration and enter dormant state;
In the time that described communication process does not finish, judge that whether described communication process is overtime, in the time that described communication process is overtime, enter dormant state; In the time that described communication process is not overtime, continue to receive packet, carry out the treatment scheme of described data stream.
The system of the reduction active radio frequency label power consumption that the embodiment of the present invention provides, in the time that active radio frequency label completes communication process, close data enable function and arrange and close duration, make in the time that label is for a long time in same radio-frequency antenna coverage, can not be waken up at once, save battery power consumption, reduce energy consumption, and close duration by set timer, while not only ensureing that active radio frequency label enters into the coverage of next radio-frequency antenna, still can normally carry out Data Stream Processing, and can utilize preferably its interrupt function, can enable data arousal function in the time reaching timing length.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (8)
1. an active radio frequency label communication means, is characterized in that, the method comprises:
After active radio frequency label is waken up, communicate with corresponding radio-frequency antenna;
In the time that this communication process finishes, close data arousal function and arrange and close duration, enter dormant state;
Described in reaching, close after duration, enable described data arousal function.
2. active radio frequency label communication means as claimed in claim 1, is characterized in that, described active radio frequency label comprises before entering dormant state:
Timer is set, sets and close the duration of described radiofrequency signal response function by described timer, and described in reaching, closing after duration, enable described radiofrequency signal response function by described timer.
3. active radio frequency label communication means as claimed in claim 1, it is characterized in that, enable after described data arousal function, in the time that described active radio frequency label is waken up again, the method also comprises: to carry out the radio-frequency antenna ID of Data Stream Processing identical with the last time to judge current radio-frequency antenna Identity Code ID
When identical, close described data arousal function and arrange and close duration, enter dormant state;
When not identical, communicate with current radio-frequency antenna, and carry out the treatment scheme of data stream.
4. active radio frequency label communication means as claimed in claim 1, is characterized in that, in the process that described and corresponding radio-frequency antenna communicates, comprising:
Judge whether described communication process finishes;
In the time that described communication process finishes, close described data arousal function and arrange and close duration, enter dormant state;
In the time that described communication process does not finish, judge that whether described communication process is overtime, in the time that described communication process is overtime, enter dormant state; In the time that described communication process is not overtime, proceed current communication process.
5. an active radio frequency label, is characterized in that, this active radio frequency label comprises:
Data Stream Processing unit, after being waken up when active radio frequency label, communicates with corresponding radio-frequency antenna;
Data arousal function closing unit, in the time that this communication process finishes, closes data arousal function, enters dormant state;
Duration control module, closes the duration of closing of data arousal function for described data arousal function closing unit is set, when the time reaches described data arousal function and closes after duration, enable described data arousal function.
6. active radio frequency label as claimed in claim 5, is characterized in that, described duration control module is timer.
7. active radio frequency label as claimed in claim 5, it is characterized in that, this active label also comprises a judging unit, described in being used for, enable described in cell enable after data arousal function, in the time that described active radio frequency label is waken up again, to communicate the radio-frequency antenna ID of process identical with the last time to judge current radio-frequency antenna Identity Code ID
When identical, close described data arousal function and arrange and close duration, enter dormant state;
When not identical, communicate with current radio-frequency antenna, and carry out the treatment scheme of data stream.
8. active radio frequency label as claimed in claim 5, is characterized in that, described Data Stream Processing unit carries out in the process of Data Stream Processing, also for:
Judge whether described communication process finishes;
In the time that described communication process finishes, close described data arousal function and arrange and close duration, enter dormant state;
In the time that described communication process does not finish, judge that whether described communication process is overtime, in the time that described communication process is overtime, enter dormant state; In the time that described communication process is not overtime, continue to receive packet, carry out the treatment scheme of described data stream.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210514627.XA CN103854000A (en) | 2012-12-04 | 2012-12-04 | Active radio frequency tag communication method |
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| CN201210514627.XA CN103854000A (en) | 2012-12-04 | 2012-12-04 | Active radio frequency tag communication method |
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| CN103854000A true CN103854000A (en) | 2014-06-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105848257A (en) * | 2016-01-22 | 2016-08-10 | 乐卡汽车智能科技（北京）有限公司 | Communication method and device, and intelligent device |
| CN106530080A (en) * | 2015-09-14 | 2017-03-22 | 成都娇子意航星科技有限公司 | Dormant transaction matchmaking method based on queue dynamic change |
| CN109086638A (en) * | 2018-06-08 | 2018-12-25 | 深圳成谷科技有限公司 | A kind of method and CPC card for saving CPC card power consumption in traffic congestion |
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2012
- 2012-12-04 CN CN201210514627.XA patent/CN103854000A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106530080A (en) * | 2015-09-14 | 2017-03-22 | 成都娇子意航星科技有限公司 | Dormant transaction matchmaking method based on queue dynamic change |
| CN105848257A (en) * | 2016-01-22 | 2016-08-10 | 乐卡汽车智能科技（北京）有限公司 | Communication method and device, and intelligent device |
| CN109086638A (en) * | 2018-06-08 | 2018-12-25 | 深圳成谷科技有限公司 | A kind of method and CPC card for saving CPC card power consumption in traffic congestion |
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Application publication date: 20140611 |