CN105469006B - A kind of electronic tag awakening method, device and electronic tag - Google Patents
A kind of electronic tag awakening method, device and electronic tag Download PDFInfo
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Abstract
The embodiment of the present invention provides a kind of electronic tag awakening method, device and electronic tag, and wherein method includes: reception radiofrequency signal；Frequency digital baseband signal corresponding with preset frequency is selected from the radiofrequency signal；Data frame head entrained by the digital baseband signal is compared with tentation data frame head；When the data frame head entrained by the digital baseband signal is corresponding with tentation data frame head, output wakes up the wake-up signal of electronic tag.Electronic tag awakening method provided in an embodiment of the present invention can be waken up according to the use of electronic tag, and there is no electronic tag be waken up and without using the case where needing, the output of wake-up signal simultaneously is carried out according to the radiofrequency signal for waking up electronic tag that the wake-up side of electronic tag issues, to reduce electronic tag by the probability of other radiofrequency signal false wake-ups, the accuracy rate of electronic tag wake-up is improved.
Description
Technical field
The present invention relates to equipment awakening technology field, more specifically to a kind of electronic tag awakening method, device and
Electronic tag.
Background technique
In current intelligent transportation field application, such as electric non-stop toll (ETC), free flow, Path Recognition are
It can all be used in system and arrive electronic tag；Electronic tag includes on board unit (OBU), the Anti-dismantling label etc. in OBU.Electronic tag
When in use, the wakeup process of electronic tag can be related to；By taking OBU as an example, RSU (roadside unit) on board unit
(OBU) when being communicated, RSU will send and wake up OBU with the data of wake-up signal, after OBU is waken up, will starting receive and
Transmit circuit completes the data interaction between RSU.
In order to reduce electronic tag power consumption to the greatest extent, the electronic tag most of the time is all in Low-power-consumptiodormancy dormancy shape
State, electronic tag just will start each modular circuit and work only after being received in compliance with the wake-up signal of requirement；Therefore electronics
The superiority and inferiority of label wake-up mode determines working performance and the service life of electronic tag.
Currently, general issue wake-up signal by electronic label waking device, the wake-up of electronic tag, electronic tag are realized
Rouser it is built-in in electronic tag, be independently of electronic tag exist.Common electronic tag wake-up mode is week
Phase property wakes up, i.e. the sending wake-up signal of electronic label waking device timing, thus the wake-up electronic tag of timing；This electronics
Label wake-up mode often will appear that electronic tag is waken up and nothing makes being waken up according to the use of electronic tag
The case where with needing, lead to that the power consumption of electronic tag is larger, service life is lower.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of electronic tag awakening method, device and electronic tag, it is existing to solve
There is electronic tag wake-up mode not waken up according to the use of electronic tag, often will appear electronic tag be waken up and
Without the case where needing is used, lead to the problem that the power consumption of electronic tag is larger, service life is lower.
To achieve the above object, the embodiment of the present invention provides the following technical solutions:
A kind of electronic tag awakening method, comprising:
Receive radiofrequency signal；
Frequency digital baseband signal corresponding with preset frequency is selected from the radiofrequency signal；
Data frame head entrained by the digital baseband signal is compared with tentation data frame head；
When the data frame head entrained by the digital baseband signal is corresponding with tentation data frame head, output wakes up electronics
The wake-up signal of label.
Wherein, described that frequency digital baseband signal packet corresponding with preset frequency is selected from the radiofrequency signal
It includes:
A. high-frequency modulation signal is removed from the radiofrequency signal by first order circuit, obtains the digital baseband letter of low frequency
Number, the first enhanced processing is carried out to the digital baseband signal of the low frequency, so that the digital baseband signal after the first enhanced processing
Level reach the first preset range；
B. it is selected from the digital baseband signal after the first enhanced processing by second level circuit opposite with preset frequency
The digital baseband signal answered carries out the second enhanced processing to digital baseband signal corresponding with preset frequency, so that second puts
The level of big treated digital baseband signal reaches the second preset range, to the digital baseband signal after the second enhanced processing into
Traveling wave shape arranges.
Wherein, between step A and step B further include:
In the digital baseband signal after emitter following derailing switch receives the first enhanced processing of first order circuit output,
The built-in switch being connected in emitter following derailing switch, so that digital baseband signal after the first enhanced processing built-in is opened by described
It closes and second level circuit is transferred to by first order circuit；Do not receive first order circuit output in emitter following derailing switch first is put
When big treated digital baseband signal, the built-in switch in the emitter following derailing switch is disconnected；
Temperature-compensating processing, the temperature compensator are carried out to temperature compensator both ends institute's connection circuit by temperature compensator
One end connects the first order circuit by the emitter following derailing switch, and the other end connects the second level circuit.
Wherein, the digital baseband signal for selecting low frequency from the high-frequency modulation signal by first order circuit,
First enhanced processing is carried out to the digital baseband signal of the low frequency, so that the electricity of the digital baseband signal after the first enhanced processing
It is flat to reach the first preset range and include:
High-frequency modulation signal is removed from the radiofrequency signal by detection demodulator, obtains the digital baseband letter of low frequency
Number；
The first enhanced processing is carried out by digital baseband signal of first amplifier to the low frequency, so that at the first amplification
The level of digital baseband signal after reason reaches the first preset range；
It is described to be selected from the digital baseband signal after the first enhanced processing and preset frequency phase by second level circuit
Corresponding digital baseband signal carries out the second enhanced processing to digital baseband signal corresponding with preset frequency, so that second
The level of digital baseband signal after enhanced processing reaches the second preset range, to the digital baseband signal after the second enhanced processing
Carrying out waveform arrangement includes:
It is selected from the digital baseband signal after the first enhanced processing and preset frequency phase by active band-pass filter
Corresponding digital baseband signal；
The second enhanced processing is carried out by the second amplifier pair digital baseband signal corresponding with preset frequency, so that the
The level of digital baseband signal after two enhanced processings reaches the second preset range；
Waveform arrangement is carried out to the digital baseband signal after the second enhanced processing by reshaper.
The embodiment of the present invention also provides a kind of electronic label waking device, comprising:
Receiving module, for receiving radiofrequency signal；
Module is chosen, for selecting frequency digital baseband letter corresponding with preset frequency from the radiofrequency signal
Number；
Comparison module, for comparing data frame head entrained by the digital baseband signal with tentation data frame head
It is right；
Wake-up module, it is corresponding with tentation data frame head for the data frame head entrained by the digital baseband signal
When, output wakes up the wake-up signal of electronic tag.
Wherein, the selection module includes:
First order circuit obtains the digital baseband letter of low frequency for removing high-frequency modulation signal from the radiofrequency signal
Number, the first enhanced processing is carried out to the digital baseband signal of the low frequency, so that the digital baseband signal after the first enhanced processing
Level reach the first preset range；
Second level circuit, it is corresponding with preset frequency for being selected from the digital baseband signal after the first enhanced processing
Digital baseband signal, to digital baseband signal corresponding with preset frequency carry out the second enhanced processing so that second amplification
The level of treated digital baseband signal reaches the second preset range, carries out to the digital baseband signal after the second enhanced processing
Waveform arranges.
Wherein, the selection module further include:
With the emitter following derailing switch of the first order circuit connection, the emitter following derailing switch is used to receive the
When digital baseband signal after the first enhanced processing of primary circuit output, it is connected to built-in in the logical emitter following derailing switch
Switch, so that the digital baseband signal after the first enhanced processing is transferred to the second level by first order circuit by the built-in switch
Circuit；When not receiving the digital baseband signal after the first enhanced processing of first order circuit output, disconnect the emitter-base bandgap grading with
With the built-in switch in derailing switch；
Respectively with the temperature compensator of the emitter following derailing switch and the second level circuit connection, the temperature-compensating
Device is used to carry out temperature compensator both ends institute's connection circuit temperature-compensating processing, and described temperature compensator one end passes through the emitter-base bandgap grading
Derailing switch is followed to connect the first order circuit, the other end connects the second level circuit.
Wherein, the first order circuit includes:
Detection demodulator obtains the digital baseband letter of low frequency for removing high-frequency modulation signal from the radiofrequency signal
Number；
First amplifier carries out the first enhanced processing for the digital baseband signal to the low frequency, so that the first amplification
The level of treated digital baseband signal reaches the first preset range；
The second level circuit includes:
Active band-pass filter, for being selected from the digital baseband signal after the first enhanced processing and preset frequency phase
Corresponding digital baseband signal；
Second amplifier, for carrying out the second enhanced processing to digital baseband signal corresponding with preset frequency, so that
The level of digital baseband signal after second enhanced processing reaches the second preset range；
Reshaper, for carrying out waveform arrangement to the digital baseband signal after the second enhanced processing.
The embodiment of the present invention also provides a kind of electronic tag, including electronic label waking device described above.
Based on the above-mentioned technical proposal, electronic tag awakening method provided in an embodiment of the present invention, is receiving radiofrequency signal
Afterwards, frequency digital baseband signal corresponding with preset frequency can be selected from radiofrequency signal, and by the number of selected taking-up
Data frame head entrained by baseband signal is compared with tentation data frame head, only the data entrained by digital baseband signal
When frame head is corresponding with tentation data frame head, just output wakes up the wake-up signal of electronic tag, realizes the wake-up of electronic tag.This
Inventive embodiments provide electronic tag awakening method, pass through setting output wake-up signal condition: radiofrequency signal be frequency with
The corresponding digital baseband signal of preset frequency, and digital baseband signal carries tentation data frame head；Successively carry out signal
The comparison for the data frame head that frequency selection purposes and signal carry, only the case where the received radiofrequency signal of institute meets above-mentioned condition
Under, electronic label waking device just determines that radiofrequency signal is what the wake-up side of electronic tag issued, to export wake-up signal；Cause
This electronic tag awakening method provided in an embodiment of the present invention can be waken up according to the use of electronic tag, and be not present
Electronic tag is waken up and without using the case where needing, while the output of wake-up signal is issued according to the wake-up side of electronic tag
Radiofrequency signal for waking up electronic tag carries out, thus reduce electronic tag by the probability of other radiofrequency signal false wake-ups,
Improve the accuracy rate of electronic tag wake-up.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the flow chart of electronic tag awakening method provided in an embodiment of the present invention；
Fig. 2 selects frequency digital base corresponding with preset frequency to be provided in an embodiment of the present invention from radiofrequency signal
The method flow diagram of band signal；
Fig. 3 selects frequency digital base corresponding with preset frequency to be provided in an embodiment of the present invention from radiofrequency signal
The another method flow chart of band signal；
Fig. 4 selects frequency digital base corresponding with preset frequency to be provided in an embodiment of the present invention from radiofrequency signal
The another method flow chart of band signal；
Fig. 5 is another flow chart of electronic tag awakening method provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of electronic label waking device provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram provided in an embodiment of the present invention for choosing module；
Fig. 8 is the structural schematic diagram of first order circuit provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram of second level circuit provided in an embodiment of the present invention；
Figure 10 is another structural schematic diagram provided in an embodiment of the present invention for choosing module；
Figure 11 is the another structural schematic diagram provided in an embodiment of the present invention for choosing module；
Figure 12 is the another structural schematic diagram provided in an embodiment of the present invention for choosing module；
Figure 13 is the another structural schematic diagram of electronic label waking device provided in an embodiment of the present invention；
Figure 14 is the structural schematic diagram of OBU provided in an embodiment of the present invention；
Figure 15 is the system schematic provided in an embodiment of the present invention for realizing application examples.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is the flow chart of electronic tag awakening method provided in an embodiment of the present invention, and this method can be applied to electronics mark
Rouser is signed, referring to Fig.1, this method may include:
Step S100, radiofrequency signal is received；
Optionally, radiofrequency signal can be received by the radio-frequency antenna of electronic tag；
Radiofrequency signal may include the digital baseband for carrying tentation data frame head that the wake-up side of electronic tag is issued
Signal；As electronic tag be OBU when, the wake-up of electronic tag can be with for RSU (roadside unit), then RSU can be believed by radio frequency
Number mode issue the digital baseband signal for carrying tentation data frame head so that electronic label waking device can pass through
The radio-frequency antenna of OBU receives the digital baseband signal.
Step S110, frequency digital baseband signal corresponding with preset frequency is selected from the radiofrequency signal；
Optionally, due to environmental disturbances, received radiofrequency signal in addition to the wake-up side of electronic tag is with radiofrequency signal
What mode issued carries outside the digital baseband signal of tentation data frame head, it is also possible to which other are interfered including high-frequency modulation signal etc.
Signal；Therefore the embodiment of the present invention need to carry out signal selection and processing to the received radiofrequency signal of institute, choose from radiofrequency signal
Signal frequency digital baseband signal corresponding with preset frequency out；Corresponding, the wake-up side of electronic tag can preset frequency
Issue the digital baseband signal for carrying tentation data frame head.
Optionally, preset frequency can be low frequency, and be the frequency of 256K or 512K or its common divisor.Obviously,
Preset frequency is also possible to low frequency, the frequency of other setpoint frequency numerical value, can be depending on concrete application situation.
Step S120, data frame head entrained by the digital baseband signal is compared with tentation data frame head；
It optionally, can be to the digital baseband signal after selecting digital baseband signal corresponding with preset frequency
It is decoded processing, obtains data frame head entrained in the digital baseband signal, by obtained data frame head and is made a reservation for
Data frame head be compared.Optionally, tentation data frame head can be pre-set can trigger of the embodiment of the present invention and call out
The data frame head that signal of waking up exports.
Step S130, it is defeated when the data frame head entrained by the digital baseband signal is corresponding with tentation data frame head
The wake-up signal of electronic tag is waken up out.
Data frame head entrained by the digital baseband signal is corresponding with tentation data frame head, illustrates that electronic tag wakes up
Device received digital baseband signal by the wake-up side of electronic tag issue for waking up the signal of electronic tag；At this time
It needs to wake up electronic tag, therefore the exportable wake-up signal for waking up electronic tag of electronic label waking device, with right
Electronic tag is accurately waken up.
Optionally, tentation data frame head is chosen as data frame head 0x7E, the following table 1 show it is with 0x7E data frame head and
Signal frequency is the data format schematic diagram of the radiofrequency signal of 256K, can carry out reference:
Table 1
Obviously, tentation data frame head, preset frequency numerical value can also be depending on practical situations.
Corresponding, the radiofrequency signal that the wake-up side of electronic tag is issued should have the property that radiofrequency signal is frequency
Digital baseband signal corresponding with preset frequency, and carry tentation data frame head.
Electronic tag awakening method provided in an embodiment of the present invention can be from radiofrequency signal after receiving radiofrequency signal
Select frequency digital baseband signal corresponding with preset frequency, and by number entrained by the digital baseband signal of selected taking-up
It is compared according to frame head with tentation data frame head, only the data frame head entrained by digital baseband signal and tentation data frame head
When corresponding, just output wakes up the wake-up signal of electronic tag, realizes the wake-up of electronic tag.Electricity provided in an embodiment of the present invention
Subtab awakening method, pass through the condition of setting output wake-up signal: radiofrequency signal is frequency number corresponding with preset frequency
Word baseband signal, and digital baseband signal carries tentation data frame head；The frequency selection purposes and signal for successively carrying out signal carry
Data frame head comparison, only in the case where the received radiofrequency signal of institute meets above-mentioned condition, electronic label waking device
Just determine that radiofrequency signal is what the wake-up side of electronic tag issued, to export wake-up signal；Therefore the embodiment of the present invention provides
Electronic tag awakening method can be waken up according to the use of electronic tag, and be waken up and nothing there is no electronic tag
The case where using needing, while the output of wake-up signal is used to wake up electronic tag according to what the wake-up side of electronic tag issued
Radiofrequency signal carries out, to reduce electronic tag by the probability of other radiofrequency signal false wake-ups, improves electronic tag wake-up
Accuracy rate.
Optionally, the mode of frequency digital baseband signal corresponding with preset frequency is selected from the radiofrequency signal
Two stages can be divided into:
One, the digital baseband signal of low frequency is chosen, and carries out enhanced processing；
Two, digital baseband signal corresponding with preset frequency is chosen from the digital baseband signal that low frequency amplifies, and right
The digital baseband signal of selection is amplified to be arranged with waveform.
It is corresponding, frequency and preset frequency phase are selected from radiofrequency signal Fig. 2 shows provided in an embodiment of the present invention
The method flow diagram of corresponding digital baseband signal, referring to Fig. 2, this method may include:
Step S200, high-frequency modulation signal is removed from the radiofrequency signal, obtains the digital baseband signal of low frequency, to institute
The digital baseband signal for stating low frequency carries out the first enhanced processing, so that the level of the digital baseband signal after the first enhanced processing reaches
To the first preset range；
Optionally, step S200 can be completed by first order circuit, and the function to be realized of first order circuit mainly has:
Detection demodulation process is carried out, high-frequency modulation signal is removed from radiofrequency signal, obtains the digital baseband signal of low frequency；
First time signal enhanced processing is carried out, the digital baseband signal of low frequency is amplified, so that signal level reaches first in advance
Range is determined, so that subsequent process circuit can identify the digital baseband signal of the low frequency.
It is worth noting that, which type of signal those skilled in the art can understand for height for radiofrequency signal field
Frequency signal, which type of signal are low frequency signal；The visual actual signal applicable cases of the identification of high-frequency signal and low frequency signal and
It is fixed.
Step S210, number corresponding with preset frequency is selected from the digital baseband signal after the first enhanced processing
Baseband signal carries out the second enhanced processing to digital baseband signal corresponding with preset frequency, so that after the second enhanced processing
The level of digital baseband signal reach the second preset range, it is whole to carry out waveform to the digital baseband signal after the second enhanced processing
Reason.
It is corresponding, the embodiment of the present invention waveform can be arranged after digital baseband signal entrained by data frame head and predetermined
Data frame head is compared, thus when the data frame head entrained by digital baseband signal is corresponding with tentation data frame head, it is defeated
The wake-up signal of electronic tag is waken up out.
Optionally, step S210 can be completed by second level circuit, and the circuit function to be realized in the second level mainly has:
Bandpass filtering selects number corresponding with preset frequency from the digital baseband signal after the first enhanced processing
Baseband signal；
Second of signal enhanced processing is carried out, processing is amplified to digital baseband signal corresponding with preset frequency,
The level of amplifier digital baseband signal reaches the second preset range；
Waveform arranges, and carries out waveform arrangement to the digital baseband signal after second of enhanced processing.
Optionally, the detection demodulation process of first order circuit can be completed by detection demodulator, first time signal enhanced processing
It can be completed by the first amplifier；The bandpass filtering treatment of second level circuit can be completed by active band-pass filter, second of signal
Enhanced processing can be completed by the second amplifier, and waveform arrangement can be completed by reshaper.Corresponding, Fig. 3 shows implementation of the present invention
The another method flow chart of frequency digital baseband signal corresponding with preset frequency is selected in the slave radiofrequency signal that example provides,
Referring to Fig. 3, this method may include:
Step S300, high-frequency modulation signal is removed from the radiofrequency signal by detection demodulator, obtains the number of low frequency
Word baseband signal；
Step S310, the first enhanced processing is carried out by digital baseband signal of first amplifier to the low frequency, so that
The level of digital baseband signal after first enhanced processing reaches the first preset range；
Step S320, selected from the digital baseband signal after the first enhanced processing by active band-pass filter in advance
Determine the corresponding digital baseband signal of frequency；
Step S330, it is carried out at the second amplification by the second amplifier pair digital baseband signal corresponding with preset frequency
Reason, so that the level of the digital baseband signal after the second enhanced processing reaches the second preset range；
Step S340, waveform arrangement is carried out to the digital baseband signal after the second enhanced processing by reshaper.
It is worth noting that, the function implementation of above-described first order circuit and second level circuit is only optional side
Formula, on the basis of disclosing first order circuit and second level circuit function, those skilled in the art can also determine other electricity easily
Road implementation.
Optionally, for the on-off between first order circuit and second level circuit, the embodiment of the present invention can by emitter-base bandgap grading with
It is realized with derailing switch, so that the overall power to circuit controls.Optionally, pass through first order circuit in the embodiment of the present invention
Detection demodulation process and first time signal enhanced processing are carried out to radiofrequency signal, band is carried out to radiofrequency signal by second level circuit
In the case that pass filter processing, second of signal enhanced processing and waveform arrange, the embodiment of the present invention can also be in emitter following
When derailing switch receives the digital baseband signal after the first enhanced processing of first order circuit output, it is connected to emitter following derailing switch
In built-in switch so that the digital baseband signal after the first enhanced processing is transmitted by the built-in switch by first order circuit
To second level circuit；Digital baseband after emitter following derailing switch does not receive the first enhanced processing of first order circuit output
When signal, the built-in switch in the emitter following derailing switch is disconnected.
Corresponding, Fig. 4 is shown provided in an embodiment of the present invention selects frequency and preset frequency phase from radiofrequency signal
The another method flow chart of corresponding digital baseband signal, referring to Fig. 4, this method may include:
Step S400, high-frequency modulation signal is removed from the radiofrequency signal by first order circuit, obtains the number of low frequency
Word baseband signal carries out the first enhanced processing to the digital baseband signal of the low frequency, so that the number after the first enhanced processing
The level of baseband signal reaches the first preset range；
Step S410, the digital base after emitter following derailing switch receives the first enhanced processing of first order circuit output
When band signal, the built-in switch being connected in emitter following derailing switch, so that the digital baseband signal after the first enhanced processing passes through
The built-in switch is transferred to second level circuit by first order circuit；
Optionally, the digital base after emitter following derailing switch does not receive the first enhanced processing of first order circuit output
When band signal, the embodiment of the present invention can disconnect the built-in switch in the emitter following derailing switch, to disconnect first order circuit
With second level circuit, the overall power of circuit is reduced.
Step S420, it is selected from the digital baseband signal after the first enhanced processing by second level circuit and predetermined frequency
The corresponding digital baseband signal of rate carries out the second enhanced processing to digital baseband signal corresponding with preset frequency, so that
The level of digital baseband signal after second enhanced processing reaches the second preset range, to the digital baseband after the second enhanced processing
Signal carries out waveform arrangement.
Optionally, the embodiment of the present invention can carry out temperature-compensating processing to first order circuit and second level circuit, guarantee the
Primary circuit guarantees that entanglement does not occur for the working sequence of integrated circuit as the circuit variation of second circuit.It is corresponding, this hair
Under selecting frequency digital baseband signal corresponding with preset frequency in the slave radiofrequency signal that bright embodiment provides and may also include
State step:
Temperature-compensating processing, the temperature compensator are carried out to temperature compensator both ends institute's connection circuit by temperature compensator
One end connects the first order circuit by the emitter following derailing switch, and the other end connects the second level circuit.
Optionally, the step of above-mentioned carry out temperature-compensating processing can method shown in Fig. 4 step S410 and step S420
Between execute.
Below from the angle of the wake-up side of electronic tag and electronic label waking device to electricity provided in an embodiment of the present invention
Subtab awakening method is introduced.Electronic tag awakening method described below can be with above-described electronic tag wake-up side
Method corresponds to each other reference.
Fig. 5 is another flow chart of electronic tag awakening method provided in an embodiment of the present invention, and referring to Fig. 5, this method can
To include:
Step S500, wake-up side's generation frequency digital baseband signal corresponding with preset frequency of electronic tag, and
Tentation data frame head is carried in the digital baseband signal；
Step S510, the wake-up side of electronic tag issues the digital baseband signal in a manner of radiofrequency signal；
Step S520, electronic label waking device receives radiofrequency signal；
Optionally, electronic label waking device can receive radiofrequency signal by the radio-frequency antenna of electronic tag；Electronic tag
Rouser can also set radio-frequency antenna certainly, realize the reception of radiofrequency signal.
Step S530, it is corresponding with preset frequency to select frequency from the radiofrequency signal for electronic label waking device
Digital baseband signal；
Step S540, electronic label waking device is by data frame head and tentation data entrained by the digital baseband signal
Frame head is compared；
Step S550, electronic label waking device is determining data frame head entrained by the digital baseband signal and is making a reservation for
When data frame head is corresponding, output wakes up the wake-up signal of electronic tag.
Electronic tag awakening method provided in an embodiment of the present invention, pass through the condition of setting output wake-up signal: radio frequency is believed
It number is frequency digital baseband signal corresponding with preset frequency, and digital baseband signal carries tentation data frame head；Successively
The comparison for the data frame head that the frequency selection purposes and signal for carrying out signal carry, only in institute, received radiofrequency signal meets above-mentioned item
In the case where part, electronic label waking device just determines that radiofrequency signal is what the wake-up side of electronic tag issued, so that output is called out
Awake signal；Therefore electronic tag awakening method provided in an embodiment of the present invention can be called out according to the use of electronic tag
It wakes up, and there is no electronic tags to be waken up without using the case where needing, while the output of wake-up signal is according to electronic tag
The radiofrequency signal for waking up electronic tag that wake-up side issues carries out, and is missed to reduce electronic tag by other radiofrequency signals
The probability of wake-up improves the accuracy rate of electronic tag wake-up.
Electronic label waking device provided in an embodiment of the present invention is introduced below, electronic tag described below is called out
Awake device can correspond to each other reference with above-described electronic tag awakening method.
Fig. 6 is the structural schematic diagram of electronic label waking device provided in an embodiment of the present invention, referring to Fig. 6, the electronics mark
Signing Rouser may include:
Receiving module 100, for receiving radiofrequency signal；
Optionally, receiving module 100 can receive radiofrequency signal by the radio-frequency antenna of electronic tag；The radio frequency of electronic tag
Radiofrequency signal can be transferred to electronic label waking device after detecting radiofrequency signal by antenna, to realize that electronic tag is called out
Awake reception of the device to radiofrequency signal.Obviously, electronic label waking device can also set radio-frequency antenna certainly, realize connecing for radiofrequency signal
It receives.
Module 200 is chosen, for selecting frequency digital baseband corresponding with preset frequency from the radiofrequency signal
Signal；
Comparison module 300, for carrying out data frame head entrained by the digital baseband signal and tentation data frame head
It compares；
Optionally, comparison module 300 can be made of comparator, can also be by the processor chips structure with comparing function
At.
Wake-up module 400, it is opposite with tentation data frame head for the data frame head entrained by the digital baseband signal
At once, output wakes up the wake-up signal of electronic tag.
Optionally, receiving module 100, choose module 200, and the function of comparison module 300 and wake-up module 400 can be by
Hardware circuit is realized.
Optionally, choosing module 200 may include first order circuit and second level circuit；Corresponding, Fig. 7 shows selection
A kind of optional structure diagram of module 200, referring to Fig. 7, choosing module 200 may include:
First order circuit 210 obtains the digital baseband of low frequency for removing high-frequency modulation signal from the radiofrequency signal
Signal carries out the first enhanced processing to the digital baseband signal of the low frequency, so that the digital baseband after the first enhanced processing is believed
Number level reach the first preset range；
Second level circuit 220, for being selected from the digital baseband signal after the first enhanced processing and preset frequency phase
Corresponding digital baseband signal carries out the second enhanced processing to digital baseband signal corresponding with preset frequency, so that second
The level of digital baseband signal after enhanced processing reaches the second preset range, to the digital baseband signal after the second enhanced processing
Carry out waveform arrangement.
Optionally, first order circuit 210 can be realized by detection demodulator removes high frequency modulation from the radiofrequency signal
Signal processed obtains the digital baseband signal of low frequency, is realized by the first amplifier and is carried out to the digital baseband signal of the low frequency
First enhanced processing.Corresponding, a kind of alternative construction that Fig. 8 shows first order circuit 210 provided in an embodiment of the present invention is shown
It is intended to, referring to Fig. 8, first order circuit 210 may include:
Detection demodulator 2101 obtains the digital base of low frequency for removing high-frequency modulation signal from the radiofrequency signal
Band signal；
Optionally, detection demodulator 2101 can remove the high-frequency modulation signals such as the 5.83G/5.84G in radiofrequency signal, obtain
The digital baseband signal of low frequency；HSMS-2850 the or HSMS-2860 serial crystal of Avago can be selected in detection demodulator 2101
Pipe.
First amplifier 2102 carries out the first enhanced processing for the digital baseband signal to the low frequency, so that first
The level of digital baseband signal after enhanced processing reaches the first preset range.
For radiofrequency signal in the decaying by space, amplitude is very low, by the first amplifier to the digital baseband signal of low frequency
Signal enhanced processing is carried out, the voltage of digital baseband signal is aloowed to reach the low and high level that subsequent conditioning circuit identifies, so as to
Subsequent conditioning circuit is further processed digital baseband signal.
Optionally, second level circuit 220 can be realized by active band-pass filter from the digital base after the first enhanced processing
Digital baseband signal corresponding with preset frequency is selected in band signal, it is corresponding with preset frequency by the second amplifier pair
Digital baseband signal carry out the second enhanced processing, by reshaper to after the second enhanced processing digital baseband signal carry out wave
Shape arranges.Corresponding, Fig. 9 shows a kind of optional structure diagram of second level circuit 220, referring to Fig. 9, second level circuit
220 may include:
Active band-pass filter 2201, for being selected from the digital baseband signal after the first enhanced processing and predetermined frequency
The corresponding digital baseband signal of rate；
Active band-pass filter can realize the signal behavior of preset frequency from low frequency digital baseband signal；Optionally, have
It is 256K or 512K or the digital baseband signal of its common divisor that source bandpass filter 2201, which can select signal frequency, is shown
So, specific preset frequency numerical value can also be depending on actually using situation.
Second amplifier 2202, for carrying out the second enhanced processing to digital baseband signal corresponding with preset frequency,
So that the level of the digital baseband signal after the second enhanced processing reaches the second preset range；
For digital baseband signal after active band-pass filter, signal will have certain decaying, filter to by active band logical
Digital baseband signal after wave device carries out the second enhanced processing, it is ensured that subsequent shaping and decoding (solution to digital baseband signal
Code can parse data frame head entrained by digital baseband signal).
Reshaper 2203, for carrying out waveform arrangement to the digital baseband signal after the second enhanced processing.
Digital baseband signal passes through square-wave signal (the generally triangle or sawtooth that a series of processing may not be standard
Wave etc.), digital baseband signal can be shaped as to the square-wave signal of standard by reshaper, in order to subsequent decoding processing.
Corresponding, Figure 10 shows another optional structure diagram for choosing module 200, can carry out reference.
Optionally, for the on-off between first order circuit and second level circuit, the embodiment of the present invention can by emitter-base bandgap grading with
It is realized with derailing switch, so that the overall power to circuit controls.Corresponding, Figure 11 shows provided in an embodiment of the present invention
The another structural schematic diagram for choosing module, in conjunction with shown in Fig. 7 and Figure 11, choosing module 200 can also include；
Wherein, emitter following derailing switch 230, for the number after receiving the first enhanced processing of first order circuit output
When word baseband signal, the built-in switch being connected in the logical emitter following derailing switch, so that the digital base after the first enhanced processing
Band signal is transferred to second level circuit by first order circuit by the built-in switch；First order circuit output is not being received
When digital baseband signal after the first enhanced processing, the built-in switch in the emitter following derailing switch is disconnected.
Optionally, the embodiment of the present invention can carry out temperature-compensating processing to first order circuit and second level circuit, guarantee the
Primary circuit guarantees that entanglement does not occur for the working sequence of integrated circuit as the circuit variation of second circuit.It is corresponding, Figure 12
The another structural schematic diagram provided in an embodiment of the present invention for choosing module is shown, in conjunction with shown in Figure 11 and Figure 12, chooses module
200 can also include: temperature compensator 240；240 one end of temperature compensator connects the first order by emitter following derailing switch 230
Circuit 210, the other end connect second level circuit 220；
Temperature compensator 240 can be used for carrying out temperature-compensating processing to temperature compensator both ends institute's connection circuit.
Optionally, temperature compensator 240 can include at least two transistors；Temperature compensator 240 can guarantee front and back end
Circuit variation is the same, and under high temperature, the transistor turn-on voltage of front end is changed, then the transistor of rear end also and then becomes together
Change, guarantees that entanglement will not occur for the working sequence of integrated circuit.
Optionally, shown in Figure 11 or Figure 12 in first order circuit can have structure shown in Fig. 8, second level circuit can have
Structure shown in Fig. 9.
Electronic label waking device provided in an embodiment of the present invention chooses mould after receiving module receives radiofrequency signal
Block will remove high-frequency modulation signal from the radiofrequency signal, obtain the digital baseband signal of low frequency, and then comparison module is by institute
It states data frame head entrained by digital baseband signal to be compared with tentation data frame head, so that wake-up module is comparing mould
When the comparison result of block is that the data frame head entrained by the digital baseband signal is corresponding with tentation data frame head, output is called out
The wake-up letter of awake electronic tag, realizes the wake-up of electronic tag.Electronic label waking device provided in an embodiment of the present invention only has
It is frequency digital baseband signal corresponding with preset frequency in radiofrequency signal, and digital baseband signal carries predetermined data frame
In the case where head, just determine that radiofrequency signal is what the wake-up side of electronic tag issued, to export wake-up signal；Therefore the present invention
The electronic tag awakening method that embodiment provides can be waken up according to the use of electronic tag, and electronic tag is not present
Be waken up and without using the case where needing, while the output of wake-up signal according to the wake-up side of electronic tag issue for waking up
The radiofrequency signal of electronic tag carries out, to reduce electronic tag by the probability of other radiofrequency signal false wake-ups, improves electricity
The accuracy rate that subtab wakes up.
Optionally, in embodiments of the present invention, detection demodulator may include: diode and capacitor；Emitter following switch
Device may include: isolator and capacitive impedance；Temperature compensator may include: isolator, capacitive impedance and inductive resistance
It is anti-；Active band-pass filter may include: inductive impedance and capacitor；Reshaper may include: capacitive impedance, amplifier 1,
Inductance capacitance, capacitor and amplifier 2；Comparison module 300 can be comparator.Corresponding, Figure 13 shows the embodiment of the present invention
The another structural schematic diagram of the electronic label waking device of offer can carry out reference.It is worth noting that, detection solution described above
The structure of tune device, emitter following derailing switch, temperature compensator, active band-pass filter and reshaper can be applied to Fig. 8~Figure 12
Shown device.
The embodiment of the present invention also provides a kind of electronic tag, which may include that electronic tag described above is called out
Awake device, can be found in the specific descriptions of electronic label waking device the description of corresponding part above, details are not described herein again.
By taking electronic tag is OBU as an example, electronic label waking device be may be disposed in OBU, and electronic label waking device can
Connect with the radio-frequency antenna of OBU, and the exportable wake-up signal of electronic label waking device realizes OBU to the main control chip of OBU
Wake-up.Corresponding, Figure 14 shows a kind of optional structure diagram of OBU, and as shown in figure 14, OBU may include: radio frequency day
Line 1, electronic label waking device 2, main control chip 3；Main control chip 3 can be connected with the other function modular circuit of OBU；Electronics mark
Electronics can be realized by the communication connection of wired or wireless way realization and radio-frequency antenna 1 and main control chip 3 by signing Rouser 2
The data interaction of label Rouser 2 and radio-frequency antenna 1 and main control chip 3.
The embodiment of the present invention also provides a kind of motor vehicle, which may include that there is electronic tag described above to call out
The electronic tag of awake device；If motor vehicle may include the OBU with electronic label waking device described above.
Hereafter by taking electronic tag is OBU as an example, data interaction is carried out as scene using OBU and RSU, the embodiment of the present invention is mentioned
The application examples of the electronic tag awakening method of confession is introduced.Corresponding, Figure 15 shows the system schematic for realizing application examples,
Referring to Fig.1 5, which includes: RSU10, OBU20 and electronic label waking device 30；Wherein, electronic label waking device 30 can
It is set in OBU20, can also independently be arranged with OBU20, but data interaction can be carried out with OBU20, Figure 15 shows electronic tag
Rouser 30 is set to the situation in OBU20；OBU20 is set in motor vehicle 40；RSU10 is set to trackside, and predetermined
The digital baseband signal for carrying tentation data frame head with preset frequency is issued in a manner of radiofrequency signal in range.
When motor vehicle 40 drives on the road with RSU10 (when such as channel ETC), electronic label waking device 30 is logical
The radio-frequency antenna for crossing OBU20 receives the radiofrequency signal of RSU10 transmission；Obviously, electronic label waking device 30 can also set certainly and penetrate
The radiofrequency signal that frequency antenna reception RSU10 is sent, and the radio-frequency antenna independent of OBU20；
It is corresponding with preset frequency that electronic label waking device 30 will select frequency from the received radiofrequency signal of institute
Data frame head entrained by the digital baseband signal is compared digital baseband signal with tentation data frame head, and in institute
State data frame head entrained by digital baseband signal it is corresponding with tentation data frame head when, output wake up OBU20 wake-up signal
(such as wake-up signal being exported to the main control chip of OBU20, to activate the workpiece in OBU20)；
OBU20 can carry out power-on initialization operation after receiving wake-up signal, start each modular circuit in OBU20,
Complete the wake-up of OBU；
OBU20 and RSU10 after wake-up carry out data interaction, and after data interaction, OBU20 carries out dormant state,
Wait the wake-up again of electronic label waking device 30.
Obviously, electronic tag may be the equipment that Anti-dismantling label etc. needs to be waken up signal wake-up.With electronic tag
For Anti-dismantling label, the wake-up side (such as OBU) of Anti-dismantling label is capable of emitting to have in advance when needing to wake up Anti-dismantling label
Determine the digital baseband signal for carrying tentation data frame head of frequency, electronic label waking device is after receiving radiofrequency signal
(reception that radiofrequency signal can be realized by setting radio-frequency antenna certainly) will select frequency and be made a reservation for from the received radiofrequency signal of institute
The corresponding digital baseband signal of frequency carries out data frame head entrained by the digital baseband signal and tentation data frame head
It compares, and when the data frame head entrained by the digital baseband signal is corresponding with tentation data frame head, output wake-up tamper
The wake-up signal of label is unloaded, to realize the wake-up of Anti-dismantling label.
Electronic tag awakening method provided in an embodiment of the present invention can be waken up according to the use of electronic tag, and
It is waken up there is no electronic tag without using the case where needing, while the output of wake-up signal is according to the wake-up side of electronic tag
The radiofrequency signal for waking up electronic tag issued carries out, to reduce electronic tag by other radiofrequency signal false wake-ups
Probability improves the accuracy rate of electronic tag wake-up.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (7)
1. a kind of electronic tag awakening method, which is characterized in that this method is applied to electronic label waking device, comprising:
Receive radiofrequency signal；
Frequency digital baseband signal corresponding with preset frequency is selected from the radiofrequency signal；
Data frame head entrained by the digital baseband signal is compared with tentation data frame head；The tentation data frame head
For the pre-set data frame head that can trigger wake-up signal output；
When the data frame head entrained by the digital baseband signal is corresponding with tentation data frame head, output wakes up electronic tag
Wake-up signal；
Wherein, data frame head entrained by the digital baseband signal is compared with tentation data frame head and includes:
Processing is decoded to the digital baseband signal, obtains data frame head entrained in the digital baseband signal, it will
Obtained data frame head is compared with scheduled data frame head；
Wherein, the frequency digital baseband signal corresponding with preset frequency that selects from the radiofrequency signal includes:
A. high-frequency modulation signal is removed from the radiofrequency signal by first order circuit, obtains the digital baseband signal of low frequency,
First enhanced processing is carried out to the digital baseband signal of the low frequency, so that the electricity of the digital baseband signal after the first enhanced processing
It is flat to reach the first preset range；
B. it is selected from the digital baseband signal after the first enhanced processing by second level circuit corresponding with preset frequency
Digital baseband signal carries out the second enhanced processing to digital baseband signal corresponding with preset frequency, so that at the second amplification
The level of digital baseband signal after reason reaches the second preset range, carries out wave to the digital baseband signal after the second enhanced processing
Shape arranges.
2. electronic tag awakening method according to claim 1, which is characterized in that also wrapped between step A and step B
It includes:
In the digital baseband signal after emitter following derailing switch receives the first enhanced processing of first order circuit output, connection
Built-in switch in emitter following derailing switch so that digital baseband signal after the first enhanced processing by the built-in switch by
First order circuit is transferred to second level circuit；At the first amplification that emitter following derailing switch does not receive first order circuit output
When digital baseband signal after reason, the built-in switch in the emitter following derailing switch is disconnected；
Temperature-compensating processing, described temperature compensator one end are carried out to temperature compensator both ends institute's connection circuit by temperature compensator
The first order circuit is connected by the emitter following derailing switch, the other end connects the second level circuit.
3. electronic tag awakening method according to claim 1 or 2, which is characterized in that it is described by first order circuit from
The digital baseband signal that low frequency is selected in the high-frequency modulation signal carries out first to the digital baseband signal of the low frequency and puts
Big processing, so that the level of the digital baseband signal after the first enhanced processing reaches the first preset range includes:
High-frequency modulation signal is removed from the radiofrequency signal by detection demodulator, obtains the digital baseband signal of low frequency；
The first enhanced processing is carried out by digital baseband signal of first amplifier to the low frequency, so that after the first enhanced processing
The level of digital baseband signal reach the first preset range；
It is described selected from the digital baseband signal after the first enhanced processing by second level circuit it is corresponding with preset frequency
Digital baseband signal, to digital baseband signal corresponding with preset frequency carry out the second enhanced processing so that second amplification
The level of treated digital baseband signal reaches the second preset range, carries out to the digital baseband signal after the second enhanced processing
Waveform arranges
It is selected from the digital baseband signal after the first enhanced processing by active band-pass filter corresponding with preset frequency
Digital baseband signal；
The second enhanced processing is carried out by the second amplifier pair digital baseband signal corresponding with preset frequency, so that second puts
The level of big treated digital baseband signal reaches the second preset range；
Waveform arrangement is carried out to the digital baseband signal after the second enhanced processing by reshaper.
4. a kind of electronic label waking device characterized by comprising
Receiving module, for receiving radiofrequency signal；
Module is chosen, for selecting frequency digital baseband signal corresponding with preset frequency from the radiofrequency signal；
Comparison module, for data frame head entrained by the digital baseband signal to be compared with tentation data frame head；Institute
Stating tentation data frame head is the pre-set data frame head that can trigger wake-up signal output；
Wake-up module, it is defeated when corresponding with tentation data frame head for the data frame head entrained by the digital baseband signal
The wake-up signal of electronic tag is waken up out；
Wherein, data frame head entrained by the digital baseband signal is compared the comparison module with tentation data frame head
Include:
Processing is decoded to the digital baseband signal, obtains data frame head entrained in the digital baseband signal, it will
Obtained data frame head is compared with scheduled data frame head；
Wherein, the selection module includes:
First order circuit obtains the digital baseband signal of low frequency for removing high-frequency modulation signal from the radiofrequency signal, right
The digital baseband signal of the low frequency carries out the first enhanced processing, so that the level of the digital baseband signal after the first enhanced processing
Reach the first preset range；
Second level circuit, for selecting number corresponding with preset frequency from the digital baseband signal after the first enhanced processing
Word baseband signal carries out the second enhanced processing to digital baseband signal corresponding with preset frequency, so that the second enhanced processing
The level of digital baseband signal afterwards reaches the second preset range, carries out waveform to the digital baseband signal after the second enhanced processing
It arranges.
5. electronic label waking device according to claim 4, which is characterized in that the selection module further include:
With the emitter following derailing switch of the first order circuit connection, the emitter following derailing switch is for receiving the first order
When digital baseband signal after the first enhanced processing of circuit output, the built-in switch being connected in the emitter following derailing switch,
So that the digital baseband signal after the first enhanced processing is transferred to second level circuit by first order circuit by the built-in switch；
When not receiving the digital baseband signal after the first enhanced processing of first order circuit output, the emitter following switch is disconnected
Built-in switch in device；
Respectively with the temperature compensator of the emitter following derailing switch and the second level circuit connection, the temperature compensator used
In carrying out temperature-compensating processing to temperature compensator both ends institute's connection circuit, described temperature compensator one end passes through the emitter following
Derailing switch connects the first order circuit, and the other end connects the second level circuit.
6. electronic label waking device according to claim 4 or 5, which is characterized in that the first order circuit includes:
Detection demodulator obtains the digital baseband signal of low frequency for removing high-frequency modulation signal from the radiofrequency signal；
First amplifier carries out the first enhanced processing for the digital baseband signal to the low frequency, so that the first enhanced processing
The level of digital baseband signal afterwards reaches the first preset range；
The second level circuit includes:
Active band-pass filter, it is corresponding with preset frequency for being selected from the digital baseband signal after the first enhanced processing
Digital baseband signal；
Second amplifier, for carrying out the second enhanced processing to digital baseband signal corresponding with preset frequency, so that second
The level of digital baseband signal after enhanced processing reaches the second preset range；
Reshaper, for carrying out waveform arrangement to the digital baseband signal after the second enhanced processing.
7. a kind of electronic tag, which is characterized in that including the described in any item electronic label waking devices of claim 4-6.
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| CN106487525B (en) * | 2016-11-03 | 2019-04-05 | 北京机械设备研究所 | Remote wakening system and method based on 125KHz wireless awakening signal |
| CN106652061A (en) * | 2016-11-15 | 2017-05-10 | 武汉瑞纳捷电子技术有限公司 | Low-power communication unit and communication method used for ETC charging system |
| CN111124511A (en) * | 2019-12-09 | 2020-05-08 | 浙江省北大信息技术高等研究院 | Wake up the chip and wake up the system |
| CN111190647B (en) * | 2019-12-25 | 2021-08-06 | 杭州微纳核芯电子科技有限公司 | Event driving type normally-open awakening chip |
| CN114065889B (en) * | 2021-11-19 | 2023-10-13 | 国网上海市电力公司 | A multifunctional positioning tag for underground cables |
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