CN108596319A - A kind of RFID electronic label and method for transmitting signals - Google Patents
A kind of RFID electronic label and method for transmitting signals Download PDFInfo
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- CN108596319A CN108596319A CN201810307785.5A CN201810307785A CN108596319A CN 108596319 A CN108596319 A CN 108596319A CN 201810307785 A CN201810307785 A CN 201810307785A CN 108596319 A CN108596319 A CN 108596319A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07766—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card comprising at least a second communication arrangement in addition to a first non-contact communication arrangement
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- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The present invention relates to a kind of RFID electronic label and method for transmitting signals.Electronic tag includes reception, transmission antenna, and reception antenna is electrically connected with conversion processing circuit and tag circuit respectively；Conversion processing circuit includes the chromacoder being sequentially connected electrically and processing unit, and chromacoder input terminal is electrically connected with reception antenna output end；Tag circuit is included in send and receive antenna between multiple label sub-circuits in parallel, each sub-circuit includes the switching device, coupling element and radio frequency chip being sequentially connected electrically, switching device input terminal is electrically connected with reception antenna output end, radio frequency chip output end is electrically connected with transmission antenna input terminal, coupling element and radio frequency chip in each sub-circuit are mutually matched, and corresponding with spot frequency range；Processing unit output end is electrically connected with each switching device Enable Pin respectively.Technical scheme of the present invention can enable RFID electronic label store the radiofrequency signal information of more multiband simultaneously, improve the capacity of electronic tag.
Description
Technical field
The present invention relates to technical field of RFID more particularly to a kind of RFID electronic label and method for transmitting signals.
Background technology
Radio frequency identification (RFID) technology is a kind of wireless communication technique, can identify specific objective simultaneously by radio signals
Related data is read and write, without establishing machinery or optical contact between identifying system and specific objective.Radio Frequency Identification Technology is made
Key technology to build Internet of Things is increasingly subject to the concern of people in recent years, and is widely used to certificate and gate inhibition's control
System, supply chain and inventory tracking, vehicle toll collection, antitheft, production controls and the every field such as asset management.
The radio-frequency recognition system of complete set generally includes application software system, reader and transponder, application software system
System can control reader to be read from transponder or rf data be written to transponder.When reader needs to read radio frequency from transponder
When data, the induced current for the radiofrequency signal generation that transponder is sent out according to reader obtains certain energy and sends out and be stored in
Target object information in internal radio frequency chip, or the signal of a certain frequency is actively sent to reader, reader reads letter
After ceasing and decoding, it is transmitted to application software system and carries out related data processing.Since transponder is generally attached to mark target pair
As upper, and it is stored with target object information, so also referred to as electronic tag.
Since the frequency range of radiofrequency signal is larger, in 100KHz between 100GHz.For low frequency, intermediate frequency, high frequency, surpass
The radiofrequency signal of high frequency, Radio Frequency Identification Technology derive passive RFID product, semi-active RFID products and active RFID product, with
It is applicable in the radiofrequency signal of different frequency scope.Correspondingly, electronic tag is also divided into passive type, semi-active type and active.
Passive label does not have internal power supply, internal integrated circuit to be driven by the electromagnetic wave received,
When label receives the signal of sufficient intensity, data can be sent out to reader.There are one small for semi-active type inside tags tool
Type battery, battery electric power can drive label integrated circuit to be at working condition, to make label antenna sufficiently as passback
Signal is used.There is power supply unit, to supply power supply needed for internal integrated circuit to generate externally inside active tag
Radiofrequency signal, therefore usually its possess longer reading/writing distance.
With the continuous development of Internet of Things, the more and more letters corresponding with target object of target object of Internet of Things are accessed
Cease more and more, the frequency range employed in radio frequency identification process also will be more and more.But no matter what type of electronics mark
Label, the radiofrequency signal of a frequency range is usually only corresponded to a electronic tag, and also needs to coordinate with mating reader
It uses.This seriously constrains the frequency range and capacity for the information that electronic tag may store, and limits radio-frequency recognition system
Application scenarios.
Invention content
In order to enable RFID electronic label to store the radiofrequency signal information of more multiband simultaneously, the appearance of electronic tag is improved
Amount, the application scenarios of extensive radio frequency identifying system, the present invention provides a kind of RFID electronic label and method for transmitting signals.
In a first aspect, the present invention provides a kind of RFID electronic label, which includes reception antenna and hair
The output end of antennas, the reception antenna is electrically connected with conversion processing circuit and tag circuit respectively；
The conversion processing circuit includes the chromacoder being sequentially connected electrically and processing unit, the signal converting means
The input terminal set is electrically connected with the output end of the reception antenna；
The tag circuit is included between the output end of the reception antenna and the input terminal of the transmission antenna in parallel
Multiple label sub-circuits, each described label sub-circuit includes the switching device, coupling element and radio frequency being sequentially connected electrically
Chip, the input terminal of the switching device are electrically connected with the output end of the reception antenna, the output end of the radio frequency chip with
The input terminal of the transmission antenna is electrically connected, each described label sub-circuit is corresponding with a spot frequency range respectively, often
The coupling element and the radio frequency chip in one label sub-circuit are mutually matched, and the coupling element and described are penetrated
Frequency chip respectively with it is described and with spot frequency range it is corresponding；
The output end of the processing unit is electrically connected with the Enable Pin of switching device described in each respectively；
The reception antenna, the radiofrequency signal for receiving RFID reader transmission；
The chromacoder, for the radiofrequency signal to be converted to digital signal；
The processing unit, the measurement frequency range for determining the radiofrequency signal according to the digital signal, and root
Generate enable signal according to the measurement frequency range and the spot frequency range that prestores, send the enable signal to institute
State the switching device of the corresponding label sub-circuit of spot frequency range；
The switching device, for being connected according to the enable signal；
The coupling element generates induced current for coupling the radiofrequency signal, and according to the radiofrequency signal；
The radio frequency chip, for generating radio frequency label information according to the induced current；
The transmission antenna, for sending the radio frequency label information to the RFID reader.
RFID electronic label provided by the invention, in use, since the same electronic tag is likely located at difference
In frequency range, such as the radiofrequency signal induced environment of low frequency, intermediate frequency or high frequency, the actual induction radio frequency of different frequency range is believed
Number, after being received by reception antenna, digital signal is on the one hand converted by chromacoder, and determined and penetrated by processing unit
The frequency range of frequency signal is determined according to its frequency range by being matched with this frequency range in multiple radio frequency chips being set up in parallel
A radio frequency chip discharge the information that wherein stores.Another aspect original radio frequency signal is transmitted to positioned at coupling element and radio frequency
The switching device of chip front end generates enable signal when processing unit, which determines, discharges the information in some radio frequency chip,
The switch device conductive for making corresponding radio frequency chip front end, to by with the matched coupling element coupled RF signal of radio frequency chip simultaneously
Induced current is generated, the information of its storage inside is sent to reader by transmission antenna, completes radio frequency by excitation radio frequency chip
The reading of information.RFID electronic label can store more multiband simultaneously by multiple radio frequency chips of corresponding different frequency range in this way
Radiofrequency signal information improves the capacity of electronic tag, and when in different radio frequency induction of signal environment, can accurately identify
Radio frequency signal frequency range, and discharge radio-frequency information corresponding with this frequency range, the application scenarios of extensive radio frequency identifying system.
Based on the above technical solution, the present invention can also be improved as follows.
Further, in each described label sub-circuit, the output end of the radio frequency chip be electrically connected there are one with
The matched transmission sub-antenna of radio frequency chip；
Sub-antenna is sent, for sending the radio frequency label information that the matched radio frequency chip generates to the RFID
Reader.
Due to manufacturing process and material etc., single transmission antenna is when sending the signal of different frequency, it is understood that there may be
The signal of partial frequency range has the case where decaying, if the corresponding frequency total size of all radio frequency chips is wider, leads to
Cross each radio frequency chip rear end be arranged one therewith the matched intelligence of frequency range send sub-antenna, when passing through single transmission day
When the signal decaying that line is sent is larger, sub-antenna is sent by matched intelligence and is directly transmitted, the letter for sending signal will be effectively improved
Number quality keeps signal transmission highly efficient accurate.
Second aspect, the present invention provides a kind of RFID electronic label method for transmitting signals, are applied to above-mentioned RFID electronics
Label, this method comprises the following steps：
Reception antenna receives the radiofrequency signal that RFID reader is sent；
The radiofrequency signal is converted to digital signal by chromacoder；
Processing unit determines the measurement frequency range of the radiofrequency signal according to the digital signal, and according to the measurement
Frequency range and the spot frequency range that prestores generate enable signal, send the enable signal to the spot frequency range
The switching device of corresponding label sub-circuit；
Switching device is connected according to the enable signal；
Coupling element couples the radiofrequency signal, and generates induced current according to the radiofrequency signal；
Radio frequency chip generates radio frequency label information according to the induced current；
Transmission antenna sends the radio frequency label information to the RFID reader.
RFID electronic label method for transmitting signals provided by the invention, in use, due to the same electronic tag
It is likely located in different frequency scope, such as the radiofrequency signal induced environment of low frequency, intermediate frequency or high frequency, for having for different frequency range
Effect induction radiofrequency signal, after being received by reception antenna, is on the one hand converted into digital signal by chromacoder, and by
Reason device determines the frequency range of radiofrequency signal, according to its frequency range determine by multiple radio frequency chips being set up in parallel with this
The matched radio frequency chip of frequency range discharges the information wherein stored.Another aspect original radio frequency signal is transmitted to positioned at coupling
The switching device for closing element and radio frequency chip front end, when processing unit, which determines, discharges the information in some radio frequency chip,
Generate enable signal, make the switch device conductive of corresponding radio frequency chip front end, to by with the matched coupling element of radio frequency chip
Coupled RF signal simultaneously generates induced current, and the information of its storage inside is sent to reading by excitation radio frequency chip by transmission antenna
Device is write, the reading of radio-frequency information is completed.RFID electronic label can be by corresponding to multiple radio frequency chips of different frequency range simultaneously in this way
The radiofrequency signal information for storing more multiband, improves the capacity of electronic tag, and in different radio frequency induction of signal environment
When, radio frequency signal frequency range can be accurately identified, and discharge radio-frequency information corresponding with this frequency range, extensive radio frequency identification
Systematic difference scene.
Based on the above technical solution, the present invention can also be improved as follows.
Further, the method further includes following steps：
It sends sub-antenna and sends the radio frequency label information that the matched radio frequency chip generates to the RFID read-write
Device.
Due to manufacturing process and material etc., single transmission antenna is when sending the signal of different frequency, it is understood that there may be
The signal of partial frequency range has the case where decaying, if the corresponding frequency total size of all radio frequency chips is wider, leads to
Cross each radio frequency chip rear end be arranged one therewith the matched intelligence of frequency range send sub-antenna, when passing through single transmission day
When the signal decaying that line is sent is larger, sub-antenna is sent by matched intelligence and is directly transmitted, the letter for sending signal will be effectively improved
Number quality keeps signal transmission highly efficient accurate.
Description of the drawings
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 technology description to make one simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without having to pay creative labor, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is RFID system Organization Chart in the prior art；
Fig. 2 is a kind of structural schematic diagram for RFID electronic label that first embodiment of the invention provides；
Fig. 3 is a kind of structural schematic diagram for RFID electronic label that second embodiment of the invention provides；
Fig. 4 is a kind of structural schematic diagram for RFID electronic label that third embodiment of the invention provides；
Fig. 5 is a kind of structural schematic diagram for RFID electronic label that fourth embodiment of the invention provides；
Fig. 6 is a kind of flow diagram for RFID electronic label method for transmitting signals that fifth embodiment of the invention provides；
Fig. 7 is a kind of flow diagram for RFID electronic label method for transmitting signals that sixth embodiment of the invention provides；
Fig. 8 is a kind of flow diagram for RFID electronic label method for transmitting signals that seventh embodiment of the invention provides；
Fig. 9 is a kind of flow diagram for RFID electronic label method for transmitting signals that eighth embodiment of the invention provides.
Specific implementation mode
In being described below, for illustration and not for limitation, it is proposed that such as specific system structure, interface, technology it
The detail of class understands the present invention to cut thoroughly.However, it will be clear to one skilled in the art that there is no these specific
The present invention can also be realized in the other embodiment of details.In other cases, omit to well-known system, circuit and
The detailed description of method, in case unnecessary details interferes description of the invention.
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
With reference to following description and drawings, it will be clear that these and other aspects of the embodiment of the present invention.In these descriptions
In attached drawing, some particular implementations in the embodiment of the present invention are specifically disclosed, to indicate to implement the implementation of the present invention
Some modes of the principle of example, but it is to be understood that the scope of embodiments of the invention is not limited.On the contrary, the present invention
Embodiment includes all changes, modification and the equivalent fallen within the scope of the spirit and intension of attached claims.
The RFID electronic label and method for transmitting signals of the embodiment of the present invention are described below in conjunction with attached drawing.
Fig. 1 is RFID system Organization Chart in the prior art.Specifically as shown in Figure 1, in RFID system, reader can root
Electronic tag is written into corresponding information according to the instruction of computer system, the radio frequency mark that can also will be read from electronic tag
Label information is forwarded to computer system.When the radiofrequency signal that reader emits specific frequency is matching in a certain range to read
Electronic tag information when, the reception antenna of electronic tag will sense this radiofrequency signal first, then coupling element couple
This radiofrequency signal simultaneously generates corresponding induced current, and the information of its storage inside is sent to by excitation radio frequency chip by transmission antenna
Reader.But no matter what type of electronic tag, the radio frequency of a special frequency channel is usually only corresponded to a electronic tag
Signal, memory capacity is smaller, and also needs to be used cooperatively with mating reader, and otherwise its internal information can not be read.
Fig. 2 is a kind of structural schematic diagram for RFID electronic label that first embodiment of the invention provides.Specifically such as Fig. 2 institutes
Show, which includes reception antenna and transmission antenna, the output end of the reception antenna respectively with conversion processing circuit and
Tag circuit is electrically connected；The conversion processing circuit includes the chromacoder being sequentially connected electrically and processing unit, the letter
The input terminal of number conversion equipment is electrically connected with the output end of the reception antenna；The tag circuit is included in the reception antenna
Output end and the input terminal of the transmission antenna between multiple label sub-circuits in parallel, each described label sub-circuit packet
Include the switching device, coupling element and radio frequency chip being sequentially connected electrically, the input terminal of the switching device and the reception antenna
Output end electrical connection, the output end of the radio frequency chip is electrically connected with the input terminal of the transmission antenna, each described mark
Bamboo slips used for divination or drawing lots circuit is corresponding with a spot frequency range respectively, the coupling element in each described label sub-circuit and described
Radio frequency chip is mutually matched, and the coupling element and the radio frequency chip are corresponding with the spot frequency range respectively；The place
The output end of reason device is electrically connected with the Enable Pin of switching device described in each respectively.
The reception antenna, the radiofrequency signal for receiving RFID reader transmission.
The chromacoder, for the radiofrequency signal to be converted to digital signal.
The processing unit, the measurement frequency range for determining the radiofrequency signal according to the digital signal, and root
Generate enable signal according to the measurement frequency range and the spot frequency range that prestores, send the enable signal to institute
State the switching device of the corresponding label sub-circuit of spot frequency range.
The switching device, for being connected according to the enable signal.
The coupling element generates induced current for coupling the radiofrequency signal, and according to the radiofrequency signal.
The radio frequency chip, for generating radio frequency label information according to the induced current.
The transmission antenna, for sending the radio frequency label information to the RFID reader.
Specifically, reception antenna is used to receive the radiofrequency signal of RFID reader transmission, is required according to electronic tag size
With mainly for radio frequency range, the shapes such as metal etch antenna, printed antenna or copper facing antenna may be used in reception antenna
Formula.After radiofrequency signal is answered in electronic tag the sense of access, is on the one hand converted and handled by conversion processing circuit, on the other hand existed
After the completion of processing, the Tag Radio Frequency information of induction radiofrequency signal release storage is utilized by tag circuit.Conversion processing circuit includes
Chromacoder and processing unit, chromacoder are AD converter and corresponding filtering shaping circuit, processing unit packet
Processor and its peripheral components are included, for judging the frequency range for incuding radiofrequency signal, and control conducting tag circuit
In corresponding label sub-circuit.For there are 3 label sub-circuits, then there are 3 pieces of different radio frequency chips.Different label electricity
Radio frequency chip in road can be discharged the radio-frequency information of storage inside by different induction radiofrequency signal effects, and by transmission antenna
It is sent to RFID reader.
The RFID electronic label that first embodiment of the invention provides, in use, since the same electronic tag can
It can be located in different frequency scope, such as the radiofrequency signal induced environment of low frequency, intermediate frequency or high frequency, for the effective of different frequency range
Incude radiofrequency signal, after being received by reception antenna, digital signal is on the one hand converted by chromacoder, and by handling
Device determines the frequency range of radiofrequency signal, according to its frequency range determine by multiple radio frequency chips being set up in parallel with this frequency
One radio frequency chip of rate commensurate in scope discharges the information wherein stored.Another aspect original radio frequency signal is transmitted to positioned at coupling
The switching device of element and radio frequency chip front end, when processing unit, which determines, discharges the information in some radio frequency chip, production
Raw enable signal makes the switch device conductive of corresponding radio frequency chip front end, to by with the matched coupling element coupling of radio frequency chip
It closes radiofrequency signal and generates induced current, the information of its storage inside is sent to read-write by excitation radio frequency chip by transmission antenna
Device completes the reading of radio-frequency information.RFID electronic label can simultaneously be deposited by multiple radio frequency chips of corresponding different frequency range in this way
The radiofrequency signal information for storing up more multiband, improves the capacity of electronic tag, and when in different radio frequency induction of signal environment,
Radio frequency signal frequency range can be accurately identified, and discharges radio-frequency information corresponding with this frequency range, extensive radio frequency identification system
The application scenarios of system.
Preferably, in each described label sub-circuit, the output end of the radio frequency chip be electrically connected there are one with
The matched transmission sub-antenna of radio frequency chip.Sub-antenna is sent, for sending the described of the matched radio frequency chip generation
Radio frequency label information is to the RFID reader.
Specifically, due to manufacturing process and material etc., single transmission antenna, can when sending the signal of different frequency
The signal that can have partial frequency range has the case where decaying, if the corresponding frequency total size of all radio frequency chips compared with
Extensively, by the way that a matched intelligence transmission sub-antenna of frequency range therewith is arranged in each radio frequency chip rear end, when by single
When the signal decaying that transmission antenna is sent is larger, sub-antenna is sent by matched intelligence and is directly transmitted, transmission letter will be effectively improved
Number signal quality, keep signal transmission highly efficient accurate.
Fig. 3 is a kind of structural schematic diagram for RFID electronic label that second embodiment of the invention provides.Specifically such as Fig. 3 institutes
Show, on the basis of the above embodiments, the processing unit includes the first counter, the second counter, processor and memory.
First counter, the time-base signal for generating predetermined period.
Second counter, for the pulse in the predetermined period of the time-base signal to the digital signal
It is counted, obtains umber of pulse.
The processor, the measurement for determining the radiofrequency signal according to the umber of pulse and the predetermined period
Frequency range.
The memory, for storing the spot frequency range corresponding with multiple label sub-circuits respectively.
The processor is additionally operable to poll and compares the measurement frequency range and multiple spot frequency ranges, works as institute
When stating measurement frequency range with a spot frequency commensurate in scope, the enable signal is generated, and send the enabled letter
Number to the label sub-circuit corresponding with the spot frequency range the switching device.
Specifically, processor controls the first counter and the second counter respectively, and predetermined period is generated by the first counter
Time-base signal, and by the second counter to the pulse digital signal being converted to through chromacoder in predetermined period into
Row counts.Since electronic tag needs to be suitable for the larger radiofrequency signal of frequency range, and for the signal of different frequency scope
Sampling request and differ.For low frequency signal, the included when base of generally use processor can meet, but for frequency compared with
High signal, the included when base of general processor can not meet the requirement accurately sampled, be produced by the first counter full
The time-base signal of sufficient different frequency signals sampling.In the predetermined period of a time-base signal, signal is acquired by the second counter
Umber of pulse, umber of pulse and predetermined period, which are divided by, can obtain the frequency of radiofrequency signal, since result of calculation may be with signal
It is changed, is denoted as measurement frequency range.
Spot frequency range corresponding with multiple label sub-circuits is stored in memory, for example, be stored with respectively low frequency,
The radiofrequency signal conventional frequency range of intermediate frequency and high frequency.After obtaining measurement frequency range, processor by measurement frequency range with
Multiple spot frequency ranges compare successively, if the spot frequency commensurate in scope of measurement frequency range and low frequency, generate enabled
Signal makes the switch device conductive in label sub-circuit corresponding with the spot frequency range of low frequency, by corresponding coupling element
Coupled RF signal generates induced current, and the radio frequency chip of low frequency is driven to discharge the radio frequency label information that it is stored.
The RFID electronic label that second embodiment of the invention provides, processing unit pass through the first counter and the second counter
Time-base signal and number of pulses are generated respectively to be counted, and the signal frequency that can be sampled is made to cover range from low to high,
The application range of electronic tag is expanded, while improving sampling accuracy rate.What is stored in memory is sub with different labels respectively
The corresponding spot frequency range of circuit, allows processor to determine corresponding label sub-circuit be connected, to accurately release pair
Radio frequency label information in the radio frequency chip answered.
Fig. 4 is a kind of structural schematic diagram for RFID electronic label that third embodiment of the invention provides.Specifically such as Fig. 4 institutes
Show, on the basis of the above embodiments, the RFID electronic label further includes the first filter circuit, first filter circuit point
It is not electrically connected with the input terminal of the output end of the reception antenna and the chromacoder.
First filter circuit, for filtering out the first noise signal in the radiofrequency signal, the first clutter letter
Number frequency range except all spot frequency ranges that the processing unit stores.
Specifically, as radio-frequency apparatus is using more and more extensive, there will be more and more radiofrequency signals in environment, i.e.,
Electronic tag is set to respond the radiofrequency signal of multiple frequency ranges, but nor all radiofrequency signals can be identified.In order to
Effective protection processing unit reduces the work of processing unit processing invalid radio-frequency signals not by unscheduled signal interference
Amount, improves its treatment effeciency, the first filter circuit is arranged in conversion processing circuit front end, the first filter circuit could be provided as band
Pass filter mode, or it is set as the filtering mode of other forms according to requirements, to ensure the mark being stored in processing unit
The radiofrequency signal for determining frequency range can be by the first filter circuit, and other noise signals are then filtered out.It should be noted that,
First filter circuit can be slightly larger than the total size of all spot frequencies if it is bandpass filtering mode, bandwidth.
The RFID electronic label that third embodiment of the invention provides, is filtered out by the first filter circuit and is not belonging to processing unit
Radiofrequency signal within the scope of the spot frequency of storage, to which effective protection processing unit is not by unscheduled signal interference, together
When reduce processing unit processing invalid radio-frequency signals workload, improve its treatment effeciency.Believed by the radio frequency of first filter
Number it will be converted and handled by chromacoder and processing unit, to determine if to belong to certain within the scope of spot frequency
The radiofrequency signal of one frequency range, and respective labels sub-circuit is connected, so that coupling element and radio frequency chip response induction radiofrequency signal,
And then discharge the radio frequency label information in radio frequency chip.
Fig. 5 is a kind of structural schematic diagram for RFID electronic label that fourth embodiment of the invention provides.Specifically such as Fig. 5 institutes
Show, on the basis of the above embodiments, the RFID electronic label further includes corresponding with label sub-circuit described in each respectively
Multiple second filter circuits, in each described label sub-circuit, second filter circuit respectively with the derailing switch
The input terminal of the output end of part and the coupling element is electrically connected.
Second filter circuit, for filtering out the second noise signal in the radiofrequency signal, the second clutter letter
Number frequency range except the spot frequency range corresponding with the label sub-circuit.
Specifically, since the second filter circuit is located in label sub-circuit, frequency filtering range and same label electricity
Coupling element and radio frequency chip in road is corresponding, can be set the second filter circuit to according to chip characteristics or actual demand
Low pass, band logical or high pass form.After switch device conductive in label sub-circuit, radiofrequency signal will act on coupling element,
Since coupling element and corresponding spot frequency range correspond to, if the frequency of radiofrequency signal and above-mentioned spot frequency of getting along well
Range corresponds to, and coupling element can not generate actual induction electric current.Second filtered electrical is set between switching device and coupling element
Road filters out the radiofrequency signal except spot frequency range corresponding with this label sub-circuit, will reduce coupling element and radio frequency core
Piece is lost by invalid radio-frequency signals interference, protects coupling element and radio frequency chip, and improve its utilization rate.
The RFID electronic label that fourth embodiment of the invention provides, is filtered out by the second filter circuit in label sub-circuit pair
Radiofrequency signal except the spot frequency range answered makes coupling element only believe by the radio frequency within the scope of corresponding spot frequency
Number induction after just generate induced current, and drive radio frequency chip discharge inside radio frequency label information.This will reduce coupling element
And radio frequency chip is lost by invalid radio-frequency signals interference, protects coupling element and radio frequency chip, and improve its utilization rate.
It should be noted that the RFID electronic label in the embodiment of the present invention can only have the first filter circuit or second
Filter circuit realizes the protection to processing unit or label sub-circuit respectively, can also have the first filter circuit or the simultaneously
Two filter circuits realize the protection simultaneously to processing unit and label sub-circuit.
Preferably, on the substrate of the RFID electronic label, the reception antenna, the transmission antenna, the conversion
It is connected respectively by shielding microstrip line between processing circuit and the tag circuit.
It can be applied to due to the RFID electronic label of the embodiment of the present invention in complicated electromagnetic environment, using shielding microstrip line
Carry out the signal transmission between sending and receiving antenna and conversion process, tag circuit, on the one hand, can effectively avoid invalid electromagnetic signal pair
The interference of electronic tag.On the other hand, since conversion processing circuit has the power supply run for processing unit, and tag circuit is
Passive circuit carries out signal transmission using shielding microstrip line between conversion processing circuit and tag circuit, can effectively avoid electricity
Signal cross-talk inside subtab, simultaneously because the impedance of microstrip line and dielectric properties are excellent, it is ensured that signal transmission it is accurate
Property and stability.
Preferably, the RFID electronic label includes three label sub-circuits, three label sub-circuit difference
It is corresponding with low frequency radio frequency signal frequency range, intermediate frequency radio frequency signal frequency range and high frequency radio signals frequency range.
Preferably, the low frequency radio frequency signal frequency range is 100KHz to 1MHz, the intermediate frequency radio frequency signal frequency model
It encloses for 1MHz to 100MHz, the high frequency radio signals frequency range is 100MHz to 10GHz.
It should be noted that the corresponding three spot frequency ranges of three label sub-circuits, both can be that radio-frequency technique is led
Domain usually signified low frequency, intermediate frequency and high frequency, or specified such as 100KHz to 1MHz, 1MHz to 100MHz and
The relatively basic, normal, high frequency range of 100MHz to 10GHz, to cover currently used 125KHz, 134KHz, 13.56MHz
With the radiofrequency signal of the frequency ranges such as 900MHz, and the radiofrequency signal of other frequency ranges of radio frequency transmission can be used for.
Correspondingly, the embodiment of the present invention additionally provides a kind of RFID electronic label method for transmitting signals, and this method is applied to
Above-mentioned RFID electronic label.
Fig. 6 is a kind of flow diagram for RFID electronic label method for transmitting signals that fifth embodiment of the invention provides.
Specifically as shown in fig. 6, this method includes：
Step 510, reception antenna receives the radiofrequency signal that RFID reader is sent.
Step 520, the radiofrequency signal is converted to digital signal by chromacoder.
Step 530, processing unit determines the measurement frequency range of the radiofrequency signal according to the digital signal, and according to
The measurement frequency range and the spot frequency range that prestores generate enable signal, send the enable signal to the calibration
The switching device of the corresponding label sub-circuit of frequency range.
Step 540, switching device is connected according to the enable signal.
Step 550, coupling element couples the radiofrequency signal, and generates induced current according to the radiofrequency signal.
Step 560, radio frequency chip generates radio frequency label information according to the induced current.
Step 570, transmission antenna sends the radio frequency label information to the RFID reader.
Specifically, reception antenna is used to receive the radiofrequency signal of RFID reader transmission, is required according to electronic tag size
With mainly for radio frequency range, the shapes such as metal etch antenna, printed antenna or copper facing antenna may be used in reception antenna
Formula.After radiofrequency signal is answered in electronic tag the sense of access, is on the one hand converted and handled by conversion processing circuit, on the other hand existed
After the completion of processing, the Tag Radio Frequency information of induction radiofrequency signal release storage is utilized by tag circuit.Conversion processing circuit includes
Chromacoder and processing unit, chromacoder are AD converter and corresponding filtering shaping circuit, processing unit packet
Processor and its peripheral components are included, for judging the frequency range for incuding radiofrequency signal, and control conducting tag circuit
In corresponding label sub-circuit.For there are 3 label sub-circuits, then there are 3 pieces of different radio frequency chips.Different label electricity
Radio frequency chip in road can be discharged the radio-frequency information of storage inside by different induction radiofrequency signal effects, and by transmission antenna
It is sent to RFID reader.
Preferably, this method further includes following steps：It sends sub-antenna and sends the institute that the matched radio frequency chip generates
Radio frequency label information is stated to the RFID reader.
Specifically, due to manufacturing process and material etc., single transmission antenna, can when sending the signal of different frequency
The signal that can have partial frequency range has the case where decaying, if the corresponding frequency total size of all radio frequency chips compared with
Extensively, by the way that a matched intelligence transmission sub-antenna of frequency range therewith is arranged in each radio frequency chip rear end, when by single
When the signal decaying that transmission antenna is sent is larger, sub-antenna is sent by matched intelligence and is directly transmitted, transmission letter will be effectively improved
Number signal quality, keep signal transmission highly efficient accurate.
Fig. 7 is a kind of flow diagram for RFID electronic label method for transmitting signals that sixth embodiment of the invention provides.
Specifically as shown in fig. 7, on the basis of the above embodiments, the processing unit includes the first counter, the second counter, processing
Device and memory；The processing unit determines the measurement frequency range of the radiofrequency signal according to the digital signal, and according to
The measurement frequency range and the spot frequency range that prestores generate enable signal, send the enable signal to the calibration
The switching device of the corresponding label sub-circuit of frequency range, step 530 specifically include：
Step 531, the first counter generates the time-base signal of predetermined period.
Step 532, pulse of second counter in the predetermined period of the time-base signal to the digital signal
It is counted, obtains umber of pulse.
Step 533, processor determines the measurement of the radiofrequency signal according to the umber of pulse and the predetermined period
Frequency range.
Step 534, processor poll compares sub with multiple labels respectively in the measurement frequency range and memory
The corresponding spot frequency range of circuit, it is raw when the measurement frequency range and a spot frequency commensurate in scope
At the enable signal, and the enable signal is sent to the institute of the label sub-circuit corresponding with the spot frequency range
State switching device.
Specifically, processor controls the first counter and the second counter respectively, and predetermined period is generated by the first counter
Time-base signal, and by the second counter to the pulse digital signal being converted to through chromacoder in predetermined period into
Row counts.Since electronic tag needs to be suitable for the larger radiofrequency signal of frequency range, and for the signal of different frequency scope
Sampling request and differ.For low frequency signal, the included when base of generally use processor can meet, but for frequency compared with
High signal, the included when base of general processor can not meet the requirement accurately sampled, be produced by the first counter full
The time-base signal of sufficient different frequency signals sampling.In the predetermined period of a time-base signal, signal is acquired by the second counter
Umber of pulse, umber of pulse and predetermined period, which are divided by, can obtain the frequency of radiofrequency signal, since result of calculation may be with signal
It is changed, is denoted as measurement frequency range.
Spot frequency range corresponding with multiple label sub-circuits is stored in memory, for example, be stored with respectively low frequency,
The radiofrequency signal conventional frequency range of intermediate frequency and high frequency.After obtaining measurement frequency range, processor by measurement frequency range with
Multiple spot frequency ranges compare successively, if the spot frequency commensurate in scope of measurement frequency range and low frequency, generate enabled
Signal makes the switch device conductive in label sub-circuit corresponding with the spot frequency range of low frequency, by corresponding coupling element
Coupled RF signal generates induced current, and the radio frequency chip of low frequency is driven to discharge the radio frequency label information that it is stored.
Fig. 8 is a kind of flow diagram for RFID electronic label method for transmitting signals that seventh embodiment of the invention provides.
Specifically as shown in figure 8, on the basis of the above embodiments, this method further includes：
Step 580, the first filter circuit filters out the first noise signal in the radiofrequency signal, first noise signal
Frequency range except all spot frequency ranges that the processing unit stores.
Step 580 is located at after step 510.
Specifically, as radio-frequency apparatus is using more and more extensive, there will be more and more radiofrequency signals in environment, i.e.,
Electronic tag is set to respond the radiofrequency signal of multiple frequency ranges, but nor all radiofrequency signals can be identified.In order to
Effective protection processing unit reduces the work of processing unit processing invalid radio-frequency signals not by unscheduled signal interference
Amount, improves its treatment effeciency, the first filter circuit is arranged in conversion processing circuit front end, the first filter circuit could be provided as band
Pass filter mode, or it is set as the filtering mode of other forms according to requirements, to ensure the mark being stored in processing unit
The radiofrequency signal for determining frequency range can be by the first filter circuit, and other noise signals are then filtered out.It should be noted that,
First filter circuit can be slightly larger than the total size of all spot frequencies if it is bandpass filtering mode, bandwidth.
Fig. 9 is a kind of flow diagram for RFID electronic label method for transmitting signals that eighth embodiment of the invention provides.
Specifically as shown in figure 9, on the basis of the above embodiments, this method further includes：
Step 590, the second filter circuit filters out the second noise signal in the radiofrequency signal, second noise signal
Frequency range except the spot frequency range corresponding with the label sub-circuit.
Step 590 is located at after step 540.
Specifically, since the second filter circuit is located in label sub-circuit, frequency filtering range and same label electricity
Coupling element and radio frequency chip in road is corresponding, can be set the second filter circuit to according to chip characteristics or actual demand
Low pass, band logical or high pass form.After switch device conductive in label sub-circuit, radiofrequency signal will act on coupling element,
Since coupling element and corresponding spot frequency range correspond to, if the frequency of radiofrequency signal and above-mentioned spot frequency of getting along well
Range corresponds to, and coupling element can not generate actual induction electric current.Second filtered electrical is set between switching device and coupling element
Road filters out the radiofrequency signal except spot frequency range corresponding with this label sub-circuit, will reduce coupling element and radio frequency core
Piece is lost by invalid radio-frequency signals interference, protects coupling element and radio frequency chip, and improve its utilization rate.
It should be noted that the RFID electronic label in the embodiment of the present invention can only have the first filter circuit or second
Filter circuit realizes the protection to processing unit or label sub-circuit respectively, can also have the first filter circuit or the simultaneously
Two filter circuits realize the protection simultaneously to processing unit and label sub-circuit.
Reader should be understood that in the description of this specification reference term " one embodiment ", " is shown " some embodiments "
The description of example ", " specific example " or " some examples " etc. mean specific features described in conjunction with this embodiment or example, structure,
Material or feature are included at least one embodiment or example of the invention.In the present specification, above-mentioned term is shown
The statement of meaning property need not be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described
It may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this
The technical staff in field can be by the spy of different embodiments or examples described in this specification and different embodiments or examples
Sign is combined.
It is apparent to those skilled in the art that for convenience of description and succinctly, the dress of foregoing description
The specific work process with unit is set, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of unit, only
A kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.
The unit illustrated as separating component may or may not be physically separated, and be shown as unit
Component may or may not be physical unit, you can be located at a place, or may be distributed over multiple networks
On unit.Some or all of unit therein can be selected according to the actual needs to realize the mesh of the embodiment of the present invention
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, can also be during two or more units are integrated in one unit.It is above-mentioned integrated
The form that hardware had both may be used in unit is realized, can also be realized in the form of SFU software functional unit.
It, can if integrated unit is realized in the form of SFU software functional unit and when sold or used as an independent product
To be stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention substantially or
Say that all or part of the part that contributes to existing technology or the technical solution can embody in the form of software products
Out, which is stored in a storage medium, including some instructions are used so that a computer equipment
(can be personal computer, server or the network equipment etc.) executes all or part of each embodiment method of the present invention
Step.And storage medium above-mentioned includes：It is USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random
Access various Jie that can store program code such as memory (RAM, Random Access Memory), magnetic disc or CD
Matter.
More than, specific implementation mode only of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or substitutions,
These modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be wanted with right
Subject to the protection domain asked.
Claims (10)
1. a kind of RFID electronic label, which is characterized in that including reception antenna and transmission antenna, the output end of the reception antenna
It is electrically connected respectively with conversion processing circuit and tag circuit；
The conversion processing circuit includes the chromacoder being sequentially connected electrically and processing unit, the chromacoder
Input terminal is electrically connected with the output end of the reception antenna；
The tag circuit is included in parallel more between the output end of the reception antenna and the input terminal of the transmission antenna
A label sub-circuit, each described label sub-circuit include the switching device, coupling element and radio frequency chip being sequentially connected electrically,
The input terminal of the switching device is electrically connected with the output end of the reception antenna, the output end of the radio frequency chip and the hair
The input terminal of antennas is electrically connected, each described label sub-circuit is corresponding with a spot frequency range respectively, each institute
The coupling element and the radio frequency chip stated in label sub-circuit are mutually matched, the coupling element and the radio frequency chip
It is corresponding with the spot frequency range respectively；
The output end of the processing unit is electrically connected with the Enable Pin of switching device described in each respectively；
The reception antenna, the radiofrequency signal for receiving RFID reader transmission；
The chromacoder, for the radiofrequency signal to be converted to digital signal；
The processing unit, the measurement frequency range for determining the radiofrequency signal according to the digital signal, and according to institute
State measurement frequency range and the spot frequency range that prestores generate enable signal, send the enable signal to the mark
Determine the switching device of the corresponding label sub-circuit of frequency range；
The switching device, for being connected according to the enable signal；
The coupling element generates induced current for coupling the radiofrequency signal, and according to the radiofrequency signal；
The radio frequency chip, for generating radio frequency label information according to the induced current；
The transmission antenna, for sending the radio frequency label information to the RFID reader.
2. RFID electronic label according to claim 1, which is characterized in that the processing unit include the first counter,
Second counter, processor and memory；
First counter, the time-base signal for generating predetermined period；
Second counter, for being carried out to the pulse of the digital signal in the predetermined period of the time-base signal
It counts, obtains umber of pulse；
The processor, the measurement frequency for determining the radiofrequency signal according to the umber of pulse and the predetermined period
Range；
The memory, for storing the spot frequency range corresponding with multiple label sub-circuits respectively；
The processor is additionally operable to poll and compares the measurement frequency range and multiple spot frequency ranges, when the survey
When measuring frequency range with a spot frequency commensurate in scope, the enable signal is generated, and send the enable signal extremely
The switching device of the label sub-circuit corresponding with the spot frequency range.
3. RFID electronic label according to claim 2, which is characterized in that the RFID electronic label further includes the first filter
Wave circuit, first filter circuit are electric with the input terminal of the output end of the reception antenna and the chromacoder respectively
Connection；
First filter circuit, for filtering out the first noise signal in the radiofrequency signal, first noise signal
Frequency range is except all spot frequency ranges that the processing unit stores.
4. RFID electronic label according to claim 3, which is characterized in that the RFID electronic label further include respectively with
Corresponding multiple second filter circuits of each described label sub-circuit, in each described label sub-circuit, described second
Filter circuit is electrically connected with the input terminal of the output end of the switching device and the coupling element respectively；
Second filter circuit, for filtering out the second noise signal in the radiofrequency signal, second noise signal
Frequency range is except the spot frequency range corresponding with the label sub-circuit.
5. RFID electronic label according to claim 4, which is characterized in that on the substrate of the RFID electronic label,
Pass through shielded microstrip line respectively between the reception antenna, the transmission antenna, the conversion processing circuit and the tag circuit
Line connects.
6. RFID electronic label according to any one of claims 1 to 5, which is characterized in that the RFID electronic label packet
Three label sub-circuits are included, three label sub-circuits are believed with low frequency radio frequency signal frequency range, intermediate frequency radio frequency respectively
Number frequency range and high frequency radio signals frequency range correspond to.
7. a kind of RFID electronic label method for transmitting signals, which is characterized in that be applied to as described in any one of claim 1 to 6
RFID electronic label, described method includes following steps：
Reception antenna receives the radiofrequency signal that RFID reader is sent；
The radiofrequency signal is converted to digital signal by chromacoder；
Processing unit determines the measurement frequency range of the radiofrequency signal according to the digital signal, and according to the measurement frequency
Range and the spot frequency range to prestore generate enable signal, and it is extremely corresponding with the spot frequency range to send the enable signal
Label sub-circuit switching device；
Switching device is connected according to the enable signal；
Coupling element couples the radiofrequency signal, and generates induced current according to the radiofrequency signal；
Radio frequency chip generates radio frequency label information according to the induced current；
Transmission antenna sends the radio frequency label information to the RFID reader.
8. RFID electronic label method for transmitting signals according to claim 7, which is characterized in that the processing unit includes
First counter, the second counter, processor and memory；The processing unit determines the radio frequency according to the digital signal
The measurement frequency range of signal, and enable signal, hair are generated according to the measurement frequency range and the spot frequency range to prestore
The enable signal is sent to be specifically included to the switching device of label sub-circuit corresponding with the spot frequency range：
First counter generates the time-base signal of predetermined period；
Second counter counts the pulse of the digital signal in the predetermined period of the time-base signal, obtains
Umber of pulse；
Processor determines the measurement frequency range of the radiofrequency signal according to the umber of pulse and the predetermined period；
Processor poll compares the measurement frequency range and the corresponding institute with multiple label sub-circuits respectively in memory
Spot frequency range is stated, when the measurement frequency range and a spot frequency commensurate in scope, generates the enabled letter
Number, and the enable signal is sent to the switching device of the label sub-circuit corresponding with the spot frequency range.
9. RFID electronic label method for transmitting signals according to claim 8, which is characterized in that the method further include as
Lower step：
First filter circuit filters out the first noise signal in the radiofrequency signal, and the frequency range of first noise signal exists
Except all spot frequency ranges of the processing unit storage.
10. RFID electronic label method for transmitting signals according to claim 9, which is characterized in that the method further includes
Following steps：
Second filter circuit filters out the second noise signal in the radiofrequency signal, and the frequency range of second noise signal exists
Except the spot frequency range corresponding with the label sub-circuit.
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| CN201810307785.5A CN108596319A (en) | 2018-04-08 | 2018-04-08 | A kind of RFID electronic label and method for transmitting signals |
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| CN201810307785.5A CN108596319A (en) | 2018-04-08 | 2018-04-08 | A kind of RFID electronic label and method for transmitting signals |
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| CN110335050A (en) * | 2019-06-25 | 2019-10-15 | 安徽华哲标签科技有限公司 | A kind of internet commodity capsule source system based on RFID label tag |
| CN110632887A (en) * | 2019-09-04 | 2019-12-31 | 一汽解放汽车有限公司 | Multi-frequency mixed wireless data read-write transmission device for heavy diesel engine machining production line |
| WO2020114076A1 (en) * | 2018-12-06 | 2020-06-11 | 英华达（上海）科技有限公司 | Intelligent finger ring |
| CN111289970A (en) * | 2020-02-05 | 2020-06-16 | 山东兰动智能科技有限公司 | System and method for measuring wireless electronic encrypted beacon mine laying and electronic coordinate mine detection |
| CN111950307A (en) * | 2020-07-02 | 2020-11-17 | 广东易理铺智能科技有限公司 | Electronic price tag awakening system and method based on electromagnetic signals |
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| CN112668683A (en) * | 2020-12-25 | 2021-04-16 | 广州安的电子科技有限公司 | Intelligent safety door and detection method thereof |
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| CN114513232A (en) * | 2022-04-19 | 2022-05-17 | 中国农业科学院农业信息研究所 | Agricultural sensor monitoring network and method based on multi-band radio frequency identification |
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| CN113822404A (en) * | 2021-09-13 | 2021-12-21 | 重庆光能振亿科技有限公司 | Intelligent storage label |
| CN114513232A (en) * | 2022-04-19 | 2022-05-17 | 中国农业科学院农业信息研究所 | Agricultural sensor monitoring network and method based on multi-band radio frequency identification |
| CN114513232B (en) * | 2022-04-19 | 2023-05-02 | 中国农业科学院农业信息研究所 | Agricultural sensor monitoring network and method based on multi-band radio frequency identification |
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