CN117394883A - Wireless synchronous communication method based on RFID system and RFID system - Google Patents
Wireless synchronous communication method based on RFID system and RFID system Download PDFInfo
- Publication number
- CN117394883A CN117394883A CN202311323671.7A CN202311323671A CN117394883A CN 117394883 A CN117394883 A CN 117394883A CN 202311323671 A CN202311323671 A CN 202311323671A CN 117394883 A CN117394883 A CN 117394883A
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- coil antenna
- rfid
- control module
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 193
- 230000006854 communication Effects 0.000 title claims abstract description 44
- 238000004891 communication Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004590 computer program Methods 0.000 claims description 9
- 230000011664 signaling Effects 0.000 description 11
- 230000005672 electromagnetic field Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a wireless synchronous communication method based on an RFID system and the RFID system, wherein the RFID system comprises the following components: the RFID host comprises a first annular coil antenna and a first radio frequency central control module, wherein the first annular coil antenna receives a polling command signal and executes corresponding polling work, and the first radio frequency central control module modulates a synchronous trigger signal to a radio frequency carrier signal when the first annular coil antenna finishes polling and sends the synchronous trigger signal through a first annular coil; each RFID slave comprises a second annular coil antenna and a second radio frequency central control module, the second annular coil antenna receives a radio frequency carrier signal with a synchronous trigger signal, the second radio frequency central control module analyzes the corresponding synchronous trigger signal according to the received radio frequency carrier signal with the synchronous trigger signal, and when the second annular coil antenna finishes polling work, the corresponding synchronous trigger signal is modulated to the radio frequency carrier signal, so that interference can be effectively prevented, and the system reliability is higher.
Description
Technical Field
The invention relates to the technical field of wireless synchronous communication, in particular to a wireless synchronous communication method based on an RFID system and the RFID system.
Background
In the related art, the synchronous polling operation of a plurality of loop coil antennas is generally realized in a wired mode, however, in actual use, other interference signals received on the synchronous lines often occur, so that the loop coil antennas cannot normally perform the synchronous polling operation.
Disclosure of Invention
The invention aims to solve the technical problems, and provides a wireless synchronous communication method based on an RFID system and the RFID system, which modulate a synchronous trigger signal onto a radio frequency carrier signal and send the signal to an adjacent annular coil antenna through the annular coil antenna, so that the condition that a communication interface chip cannot analyze due to coupling of an interference signal to the synchronous signal in wired synchronization is effectively avoided, and the reliability is higher.
The technical scheme adopted by the invention is as follows:
an RFID system, comprising: the RFID host and the N RFID slaves are sequentially arranged behind the RFID host in parallel at equal intervals, wherein the RFID host comprises a first annular coil antenna and a first radio frequency central control module, the first radio frequency central control module is fixed below the first annular coil antenna, the first annular coil antenna is used for receiving a polling command signal sent by the first radio frequency central control module and executing corresponding polling work according to the polling command signal, and the first radio frequency central control module is used for modulating a corresponding synchronous trigger signal to a radio frequency carrier signal when the first annular coil antenna completes the polling work, wherein the first annular coil is also used for sending out the radio frequency carrier signal with the synchronous trigger signal modulated by the first radio frequency central control module; each RFID slave comprises a second annular coil antenna and a second radio frequency central control module, wherein the second radio frequency central control module is fixed below the second annular coil antenna, the second annular coil antenna is used for receiving radio frequency carrier signals with synchronous trigger signals sent by adjacent RFID hosts or RFID slaves and sending the radio frequency carrier signals to the second radio frequency central control module, the second radio frequency central control module is used for analyzing corresponding synchronous trigger signals according to the received radio frequency carrier signals with the synchronous trigger signals and sending polling command signals to the corresponding second annular coil antenna, the second annular coil antenna is further used for executing corresponding polling work according to the polling command signals, and when the second annular coil antenna completes the polling work, the second radio frequency central control module is further used for modulating the corresponding synchronous trigger signals to the radio frequency carrier signals, and sending the radio frequency carrier signals with the synchronous trigger signals modulated by the second radio frequency central control module to the adjacent RFID hosts or the RFID slaves.
In one embodiment of the present invention, the distance between the RFID master and the first RFID slave and the distance between two adjacent RFID slaves are both 100cm.
In one embodiment of the present invention, the first loop antenna and the second loop antenna are each greater than or equal to 60cm by 70cm in size.
In one embodiment of the invention, the radio frequency carrier signal has a frequency of 13.56MHZ.
A wireless synchronous communication method based on the RFID system of claim 1, when the RFID host performs wireless synchronous communication to the nth RFID slave, the wireless synchronous communication method comprises the following steps: the first radio frequency central control module is controlled to send a first polling command signal to the first annular coil antenna, wherein the first annular coil executes corresponding polling work according to the first polling command signal; when the first loop coil antenna finishes polling work, controlling the first radio frequency central control module to modulate a corresponding first synchronous trigger signal to a radio frequency carrier signal, and sending the radio frequency carrier signal with the first synchronous trigger signal after the first radio frequency central control module is modulated through the first loop coil antenna; after a second loop coil antenna of a first RFID slave receives a radio frequency carrier signal with a first synchronous trigger signal, judging whether the radio frequency carrier signal with the first synchronous trigger signal is sent by the first loop coil antenna; if yes, a second radio frequency central control module in the first RFID slave machine is controlled to analyze a corresponding first synchronous trigger signal according to a radio frequency carrier signal with the first synchronous trigger signal, and a first polling command signal is sent to a corresponding second loop coil antenna, wherein the second loop coil antenna executes corresponding polling work according to the first polling command signal; when the second loop coil antenna in the first RFID slave machine finishes polling work, controlling the second radio frequency central control module in the first RFID slave machine to modulate a corresponding first synchronous trigger signal to a radio frequency carrier signal, and sending the radio frequency carrier signal with the synchronous trigger signal after the modulation of the second radio frequency central control module through the second loop coil antenna in the first RFID slave machine; after the second loop antenna of the ith RFID slave receives the radio frequency carrier signal with the first synchronous trigger signal, judging whether the radio frequency carrier signal with the first synchronous trigger signal is sent by the ith-1 RFID slave, wherein i is a positive integer which is more than or equal to 2 and less than or equal to N; if yes, a second radio frequency central control module in the ith RFID slave machine is controlled to analyze a corresponding first synchronous trigger signal according to a radio frequency carrier signal with the first synchronous trigger signal, and a first polling command signal is sent to a corresponding second loop coil antenna, wherein the second loop coil antenna executes corresponding polling work according to the first polling command signal; when the second loop coil antenna in the ith RFID slave machine finishes polling work, the second radio frequency central control module in the ith RFID slave machine is controlled to modulate a corresponding first synchronous trigger signal to a radio frequency carrier signal, and the radio frequency carrier signal with the first synchronous trigger signal modulated by the second radio frequency central control module is sent out through the second loop coil antenna in the ith RFID slave machine.
In one embodiment of the present invention, when the nth RFID slave device performs wireless synchronous communication toward the RFID master device, the wireless synchronous communication method includes the following steps: controlling a second radio frequency central control module in the Nth RFID slave to send a second polling command signal to the second annular coil antenna, wherein the second annular coil executes corresponding polling work according to the second polling command signal; when the second loop coil antenna in the Nth RFID slave machine finishes polling work, controlling the second radio frequency central control module to modulate a corresponding second synchronous trigger signal to a radio frequency carrier signal, and sending out the radio frequency carrier signal with the second synchronous trigger signal, which is modulated by the second radio frequency central control module, through the second loop coil antenna; after the second loop coil antenna of the kth RFID slave receives the radio frequency carrier signal with the second synchronous trigger signal, judging whether the radio frequency carrier signal with the second synchronous trigger signal is sent out by the kth+1th RFID slave, wherein k is a positive integer which is more than or equal to 1 and less than or equal to N-1; if yes, a second radio frequency central control module in the kth RFID slave machine is controlled to analyze a corresponding second synchronous trigger signal according to a radio frequency carrier signal with the second synchronous trigger signal, and a second polling command signal is sent to the corresponding second loop coil antenna, wherein the second loop coil antenna executes corresponding polling work according to the second polling command signal; when the second loop coil antenna in the kth RFID slave machine finishes polling work, controlling the second radio frequency central control module in the kth RFID slave machine to modulate a corresponding second synchronous trigger signal to a radio frequency carrier signal, and sending out the radio frequency carrier signal with the second synchronous trigger signal modulated by the second radio frequency central control module through the second loop coil antenna in the kth RFID slave machine; after the first loop coil antenna receives the radio frequency carrier signal with the second synchronous trigger signal, judging whether the radio frequency carrier signal with the second synchronous trigger signal is sent by the first RFID slave machine; if yes, the first radio frequency central control module is controlled to analyze a corresponding second synchronous trigger signal according to a radio frequency carrier signal with the second synchronous trigger signal, and a second polling command signal is sent to the corresponding first annular coil antenna, wherein the first annular coil antenna executes corresponding polling work according to the second polling command signal; when the first loop coil antenna finishes the polling work, the first radio frequency central control module is controlled to modulate the corresponding second synchronous trigger signal to a radio frequency carrier signal, and the radio frequency carrier signal with the second synchronous trigger signal modulated by the first radio frequency central control module is sent out through the first loop coil antenna.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the wireless synchronous communication method described above when executing the computer program.
A non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the wireless synchronous communication method described above.
The invention has the beneficial effects that:
according to the invention, the synchronous trigger signal is modulated onto the radio frequency carrier signal and is sent to the adjacent annular coil antenna through the annular coil antenna, so that the condition that the communication interface chip cannot analyze due to the fact that the interference signal is coupled to the synchronous signal during wired synchronization is effectively avoided, and the reliability is higher.
Drawings
FIG. 1 is a schematic diagram of an RFID system according to an embodiment of the present invention;
FIG. 2 is a flow chart of a wireless synchronous communication method based on an RFID system according to an embodiment of the invention;
FIG. 3 is a flow chart of a wireless synchronous communication method based on an RFID system according to an embodiment of the invention;
fig. 4 is a timing diagram of a polling command and a synchronization trigger signal in a wireless synchronization communication process based on an RFID system according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a schematic diagram of an RFID system according to an embodiment of the present invention.
As shown in fig. 1, the RFID system of the embodiment of the present invention may include: an RFID master 100 and N RFID slaves 200. Where N is a positive integer, for example, 2 (shown in fig. 1) may be used.
The RFID host 100 may include a first loop coil antenna 110 and a first radio frequency central control module 120, where the first radio frequency central control module 120 is fixed below the first loop coil antenna 110, the first loop coil antenna 110 is configured to receive a polling command signal sent by the first radio frequency central control module 120, and perform a corresponding polling operation according to the polling command signal, and the first radio frequency central control module 120 is configured to modulate a corresponding synchronous trigger signal to a radio frequency carrier signal when the first loop coil antenna 110 completes the polling operation, where the first loop coil 110 is further configured to send out the radio frequency carrier signal with the synchronous trigger signal modulated by the first radio frequency central control module 120; each RFID slave 200 includes a second loop antenna 210 and a second radio frequency central control module 220, where the second radio frequency central control module 220 is fixed below the second loop antenna 210, the second loop antenna 210 is configured to receive a radio frequency carrier signal with a synchronization trigger signal sent by an adjacent RFID master 100 or RFID slave 200 and send the radio frequency carrier signal to the second radio frequency central control module 220, and the second radio frequency central control module 220 is configured to analyze the corresponding synchronization trigger signal according to the received radio frequency carrier signal with the synchronization trigger signal and send a polling command signal to the corresponding second loop antenna 210, where the second loop antenna 210 is further configured to perform a corresponding polling operation according to the polling command signal, and the second radio frequency central control module 220 is further configured to modulate the corresponding synchronization trigger signal to the radio frequency carrier signal when the second loop antenna 210 completes the polling operation, and the second loop antenna 210 is further configured to send the radio frequency carrier signal with the synchronization trigger signal modulated by the second radio frequency central control module 220 to the adjacent RFID master 100 or RFID slave 200.
Specifically, since the frequency of the synchronous trigger signal is low, the synchronous trigger signal cannot be directly sent out through the loop coil antenna, and the radio frequency carrier signal which needs to be modulated to a certain frequency can be sent out, as a possible implementation manner, the synchronous trigger signal can be modulated to the radio frequency carrier signal with the frequency of 13.56MHz. Meanwhile, as the demodulation circuit of the radio frequency central control module is more anti-interference and accurate than the interface circuit of the common wired mode, the mode of adopting wireless synchronous communication is stronger in anti-interference capability and more accurate than the mode of adopting wired synchronous communication, thereby avoiding the condition that the communication interface chip cannot be analyzed due to the fact that interference signals are coupled to synchronous signals during wired synchronization.
It should be noted that, the radio frequency carrier signal with the frequency of 13.56MHZ generates an electromagnetic field through the loop coil antenna, the adjacent loop coil antenna senses the electromagnetic field generated by the loop coil antenna and analyzes the synchronization command signal through the radio frequency central control module, and the strength of the electromagnetic field is related to the power of the transmitted signal and the size of the loop coil antenna, so that, in order to ensure that the adjacent loop coil antenna normally receives the electromagnetic field signal of the synchronization command, the size of the loop coil antenna is not less than 60 x 70cm, and the distance between the RFID host 100 and the first RFID slave 200 and the distance between the two adjacent RFID slaves 200 are both 100cm.
In summary, the RFID system according to the embodiment of the invention includes: the RFID host comprises a first annular coil antenna and a first radio frequency central control module, wherein the first radio frequency central control module is fixed below the first annular coil antenna, the first annular coil antenna is used for receiving a polling command signal sent by the first radio frequency central control module and executing corresponding polling operation according to the polling command signal, the first radio frequency central control module is used for modulating a corresponding synchronous trigger signal to a radio frequency carrier signal when the first annular coil antenna finishes polling operation, wherein the first annular coil is further used for sending out a radio frequency carrier signal with a synchronous trigger signal after modulation of the first radio frequency central control module, each RFID slave comprises a second annular coil antenna and a second radio frequency central control module, the second radio frequency central control module is fixed below the second annular coil antenna, the second annular coil antenna is used for receiving a radio frequency carrier signal with a synchronous trigger signal sent out by an adjacent RFID host or slave and executing corresponding polling operation according to the polling command signal, the second radio frequency central control module is used for receiving the radio frequency carrier signal with the synchronous trigger signal sent out by the second annular coil after the second annular coil antenna finishes polling operation, the corresponding synchronous trigger signal is further modulated to the corresponding radio frequency carrier signal after the second annular coil is used for sending out the corresponding polling signal to the second radio frequency carrier signal which is used for carrying the corresponding synchronous trigger signal, the second radio frequency central control module is used for sending out the corresponding polling operation signal after the second annular coil is modulated to the second annular coil, the corresponding radio frequency trigger signal is used for the second radio frequency signal, and the second radio frequency central control module is used for carrying the synchronous trigger signal, and the synchronous trigger signal is sent out the radio signal, the synchronous trigger signal is modulated onto the radio frequency carrier signal and is sent to the adjacent loop coil antenna through the loop coil antenna, so that the situation that the communication interface chip cannot analyze due to the fact that an interference signal is coupled to the synchronous signal during wired synchronization is effectively avoided, and the reliability is high.
Based on the RFID system of the embodiment, the invention also provides a wireless synchronous communication method based on the RFID system.
When the RFID host performs wireless synchronous communication to the nth RFID slave, as shown in fig. 2, the wireless synchronous communication method based on the RFID system according to the embodiment of the present invention may include the following steps:
s201, the first radio frequency central control module is controlled to send a first polling command signal to the first annular coil antenna. The first annular coil executes corresponding polling operation according to the first polling command signal.
S202, when the first loop coil antenna finishes the polling work, the first radio frequency central control module is controlled to modulate the corresponding first synchronous trigger signal to a radio frequency carrier signal, and the radio frequency carrier signal with the first synchronous trigger signal modulated by the first radio frequency central control module is sent out through the first loop coil antenna.
S203, after the second loop antenna of the first RFID slave receives the radio frequency carrier signal with the first synchronous trigger signal, whether the radio frequency carrier signal with the first synchronous trigger signal is sent by the first loop antenna is judged.
S204, if yes, a second radio frequency central control module in the first RFID slave machine is controlled to analyze a corresponding first synchronous trigger signal according to a radio frequency carrier signal with the first synchronous trigger signal, and a first polling command signal is sent to a corresponding second loop coil antenna. The second loop coil antenna executes corresponding polling operation according to the first polling command signal.
S205, when the second annular coil antenna in the first RFID slave machine finishes the polling work, the second radio frequency central control module in the first RFID slave machine is controlled to modulate the corresponding first synchronous trigger signal to a radio frequency carrier signal, and the radio frequency carrier signal with the synchronous trigger signal modulated by the second radio frequency central control module is sent out through the second annular coil antenna in the first RFID slave machine.
S206, after the second loop antenna of the ith RFID slave receives the radio frequency carrier signal with the first synchronous trigger signal, judging whether the radio frequency carrier signal with the first synchronous trigger signal is sent by the ith-1 RFID slave. Wherein i is a positive integer greater than or equal to 2 and less than or equal to N.
S207, if yes, a second radio frequency central control module in the ith RFID slave machine is controlled to analyze a corresponding first synchronous trigger signal according to a radio frequency carrier signal with the first synchronous trigger signal, and a first polling command signal is sent to a corresponding second loop coil antenna. The second loop coil antenna executes corresponding polling operation according to the first polling command signal.
S208, when the second loop coil antenna in the ith RFID slave machine finishes the polling work, the second radio frequency central control module in the ith RFID slave machine is controlled to modulate the corresponding first synchronous trigger signal to a radio frequency carrier signal, and the radio frequency carrier signal with the first synchronous trigger signal modulated by the second radio frequency central control module is sent out through the second loop coil antenna in the ith RFID slave machine.
In one embodiment of the present invention, as shown in fig. 3, when the nth RFID slave machine performs wireless synchronous communication toward the RFID master machine, the wireless synchronous communication method includes the following steps:
s301, a second radio frequency central control module in the Nth RFID slave machine is controlled to send a second polling command signal to a second annular coil antenna. The second annular coil executes corresponding polling operation according to the second polling command signal.
S302, when the second annular coil antenna in the Nth RFID slave machine finishes the polling work, the second radio frequency central control module is controlled to modulate the corresponding second synchronous trigger signal to a radio frequency carrier signal, and the radio frequency carrier signal with the second synchronous trigger signal modulated by the second radio frequency central control module is sent out through the second annular coil antenna.
S303, after the second loop coil antenna of the kth RFID slave receives the radio frequency carrier signal with the second synchronous trigger signal, judging whether the radio frequency carrier signal with the second synchronous trigger signal is sent out by the kth+1th RFID slave. Wherein k is a positive integer greater than or equal to 1 and less than or equal to N-1.
S304, if yes, a second radio frequency central control module in the kth RFID slave machine is controlled to analyze a corresponding second synchronous trigger signal according to a radio frequency carrier signal with the second synchronous trigger signal, and a second polling command signal is sent to a corresponding second loop coil antenna. The second loop coil antenna executes corresponding polling operation according to the second polling command signal.
S305, when the second annular coil antenna in the kth RFID slave machine finishes the polling work, controlling the second radio frequency central control module in the kth RFID slave machine to modulate the corresponding second synchronous trigger signal to the radio frequency carrier signal, and sending the radio frequency carrier signal with the second synchronous trigger signal after the modulation of the second radio frequency central control module through the second annular coil antenna in the kth RFID slave machine.
S306, after the first loop coil antenna receives the radio frequency carrier signal with the second synchronous trigger signal, judging whether the radio frequency carrier signal with the second synchronous trigger signal is sent by the first RFID slave machine.
S307, if yes, the first radio frequency central control module is controlled to analyze the corresponding second synchronous trigger signal according to the radio frequency carrier wave signal with the second synchronous trigger signal, and a second polling command signal is sent to the corresponding first annular coil antenna. The first loop coil antenna executes corresponding polling operation according to the second polling command signal.
And S308, when the first annular coil antenna finishes the polling work, controlling the first radio frequency central control module to modulate the corresponding second synchronous trigger signal to a radio frequency carrier signal, and sending the radio frequency carrier signal with the second synchronous trigger signal modulated by the first radio frequency central control module through the first annular coil antenna.
As a possible implementation manner, as shown in fig. 4, taking N as an example, the firmware program of the single chip microcomputer in the first radio frequency central control module of the RFID host generates an execution loop antenna polling command, after execution, generates a synchronization command signal for notifying the first RFID slave to execute the polling command of the first loop antenna, modulates the synchronization command signal to a carrier signal through the modulator of the first radio frequency central control module, sends the synchronization command signal to the second loop antenna of the first RFID slave through the first loop antenna, the second loop antenna of the first RFID slave senses the synchronization signal, analyzes the synchronization command signal through the demodulator of the second radio frequency central control module of the first RFID slave, the firmware program of the single chip microcomputer of the second radio frequency central control module of the first RFID slave generates the polling command for executing the second loop antenna, after execution, generating a synchronous command signal informing a second RFID slave machine to execute a polling command of a second annular coil antenna, modulating the synchronous command signal to a carrier signal through a modulator of a second radio frequency central control module, transmitting the synchronous command signal to the second annular coil antenna of the second RFID slave machine through the second annular coil antenna, sensing the synchronous signal by the second annular coil antenna of the second RFID slave machine, analyzing the synchronous command signal through a demodulator of the second radio frequency central control module of the second RFID slave machine, generating a polling command of the execution annular coil antenna by a singlechip firmware program of the second radio frequency central control module of the second RFID slave machine, generating a synchronous command signal informing a first RFID slave machine to execute the polling command of the second annular coil antenna after the execution, modulating the synchronous command signal to the carrier signal through the modulator of the second radio frequency central control module, the second loop coil antenna is used for sending the first loop coil antenna to the first RFID slave machine, and the first loop coil antenna circulates back and forth in the mode, so that orderly work without mutual interference is realized.
In summary, according to the wireless synchronous communication method of the RFID system in the embodiment of the present invention, when the RFID host performs wireless synchronous communication to the nth RFID slave, the first radio frequency central control module is controlled to send a first polling command signal to the first loop coil antenna, where the first loop coil performs a corresponding polling operation according to the first polling command signal, and when the first loop coil antenna completes the polling operation, the first radio frequency central control module is controlled to modulate the corresponding first synchronous signaling to a radio frequency carrier signal, and the radio frequency carrier signal with the first synchronous signaling modulated by the first loop coil antenna is sent out by the first radio frequency central control module, and after the second loop coil antenna of the first RFID slave receives the radio frequency carrier signal with the first synchronous signaling, it is determined whether the radio frequency carrier signal with the first synchronous signaling is sent out by the first loop coil antenna, if yes, the second radio frequency central control module in the first RFID slave is controlled to parse the corresponding first synchronous signaling according to the radio frequency carrier signal with the first synchronous signaling, and send the first radio frequency carrier signal with the first synchronous signaling to the corresponding loop coil antenna, and after the first loop coil antenna is sent out by the second loop coil antenna, the radio frequency carrier signal with the first synchronous signaling is modulated by the first radio frequency central control module, and the radio frequency carrier signal with the first synchronous signaling is sent out by the first loop coil antenna is sent out by the second loop coil antenna according to the first synchronous signaling signal with the first synchronous signaling signal, and after the second loop coil antenna of the ith RFID slave receives the radio frequency carrier signal with the first synchronous trigger signal, judging whether the radio frequency carrier signal with the first synchronous trigger signal is sent out by the ith-1 RFID slave, wherein i is a positive integer which is more than or equal to 2 and less than or equal to N, if so, controlling the second radio frequency central control module in the ith RFID slave to analyze the corresponding first synchronous trigger signal according to the radio frequency carrier signal with the first synchronous trigger signal, and sending a first polling command signal to the corresponding second loop coil antenna, wherein the second loop coil antenna executes corresponding polling work according to the first polling command signal, and when the second loop coil antenna in the ith RFID slave completes the polling work, controlling the second radio frequency central control module in the ith RFID slave to modulate the corresponding first synchronous trigger signal to the radio frequency carrier signal, and sending the radio frequency carrier signal with the synchronous trigger signal modulated by the second radio frequency central control module in the second radio frequency slave through the second loop coil antenna in the ith RFID slave. Therefore, the synchronous trigger signal is modulated onto the radio frequency carrier signal and is sent to the adjacent annular coil antenna through the annular coil antenna, and the situation that the communication interface chip cannot analyze due to the fact that the interference signal is coupled to the synchronous signal during wired synchronization is effectively avoided, and the reliability is high.
Corresponding to the wireless synchronous communication method based on the RFID system in the embodiment, the invention also provides computer equipment.
The computer equipment of the embodiment of the invention comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the wireless synchronous communication method based on the RFID system is realized when the processor executes the computer program.
According to the computer equipment provided by the embodiment of the invention, the synchronous trigger signal is modulated onto the radio frequency carrier signal and is sent to the adjacent annular coil antenna through the annular coil antenna, so that the condition that the communication interface chip cannot analyze due to the fact that an interference signal is coupled to the synchronous signal during wired synchronization is effectively avoided, and the reliability is higher.
Corresponding to the wireless synchronous communication method based on the RFID system in the embodiment, the invention also provides a non-transitory computer readable storage medium.
The non-transitory computer readable storage medium of the embodiment of the present invention stores a computer program thereon, which when executed by a processor implements the above-described RFID system-based wireless synchronous communication method.
According to the non-transitory computer readable storage medium, the synchronous trigger signal is modulated onto the radio frequency carrier signal and is sent to the adjacent loop coil antenna through the loop coil antenna, so that the situation that the communication interface chip cannot analyze due to the fact that an interference signal is coupled to the synchronous signal during wired synchronization is effectively avoided, and the reliability is high.
In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (8)
1. An RFID system, comprising: the RFID host and the N RFID slaves are sequentially arranged behind the RFID host in parallel at equal distance, wherein,
the RFID host comprises a first annular coil antenna and a first radio frequency central control module, wherein the first radio frequency central control module is fixed below the first annular coil antenna, the first annular coil antenna is used for receiving a polling command signal sent by the first radio frequency central control module and executing corresponding polling work according to the polling command signal, and the first radio frequency central control module is used for modulating a corresponding synchronous trigger signal to a radio frequency carrier signal when the first annular coil antenna finishes the polling work, wherein the first annular coil is also used for sending out the radio frequency carrier signal with the synchronous trigger signal modulated by the first radio frequency central control module;
each RFID slave comprises a second annular coil antenna and a second radio frequency central control module, wherein the second radio frequency central control module is fixed below the second annular coil antenna, the second annular coil antenna is used for receiving radio frequency carrier signals with synchronous trigger signals sent by adjacent RFID hosts or RFID slaves and sending the radio frequency carrier signals to the second radio frequency central control module, the second radio frequency central control module is used for analyzing corresponding synchronous trigger signals according to the received radio frequency carrier signals with the synchronous trigger signals and sending polling command signals to the corresponding second annular coil antenna, the second annular coil antenna is further used for executing corresponding polling work according to the polling command signals, and when the second annular coil antenna completes the polling work, the second radio frequency central control module is further used for modulating the corresponding synchronous trigger signals to the radio frequency carrier signals, and sending the radio frequency carrier signals with the synchronous trigger signals modulated by the second radio frequency central control module to the adjacent RFID hosts or the RFID slaves.
2. The RFID system of claim 1, wherein the RFID system is configured to,
the distance between the RFID host computer and the first RFID slave computer and the distance between the two adjacent RFID slave computers are 100cm.
3. The RFID system of claim 1, wherein the RFID system is configured to,
the first loop antenna and the second loop antenna are each greater than or equal to 60cm by 70cm in size.
4. The RFID system of claim 1, wherein the RFID system is configured to,
the frequency of the radio frequency carrier signal is 13.56MHZ.
5. A wireless synchronous communication method based on the RFID system of claim 1, wherein when the RFID host performs wireless synchronous communication to the nth RFID slave, the wireless synchronous communication method comprises the following steps:
the first radio frequency central control module is controlled to send a first polling command signal to the first annular coil antenna, wherein the first annular coil executes corresponding polling work according to the first polling command signal;
when the first loop coil antenna finishes polling work, controlling the first radio frequency central control module to modulate a corresponding first synchronous trigger signal to a radio frequency carrier signal, and sending the radio frequency carrier signal with the first synchronous trigger signal after the first radio frequency central control module is modulated through the first loop coil antenna;
after a second loop coil antenna of a first RFID slave receives a radio frequency carrier signal with a first synchronous trigger signal, judging whether the radio frequency carrier signal with the first synchronous trigger signal is sent by the first loop coil antenna;
if yes, a second radio frequency central control module in the first RFID slave machine is controlled to analyze a corresponding first synchronous trigger signal according to a radio frequency carrier signal with the first synchronous trigger signal, and a first polling command signal is sent to a corresponding second loop coil antenna, wherein the second loop coil antenna executes corresponding polling work according to the first polling command signal;
when the second loop coil antenna in the first RFID slave machine finishes polling work, controlling the second radio frequency central control module in the first RFID slave machine to modulate a corresponding first synchronous trigger signal to a radio frequency carrier signal, and sending the radio frequency carrier signal with the synchronous trigger signal after the modulation of the second radio frequency central control module through the second loop coil antenna in the first RFID slave machine;
after the second loop antenna of the ith RFID slave receives the radio frequency carrier signal with the first synchronous trigger signal, judging whether the radio frequency carrier signal with the first synchronous trigger signal is sent by the ith-1 RFID slave, wherein i is a positive integer which is more than or equal to 2 and less than or equal to N;
if yes, a second radio frequency central control module in the ith RFID slave machine is controlled to analyze a corresponding first synchronous trigger signal according to a radio frequency carrier signal with the first synchronous trigger signal, and a first polling command signal is sent to a corresponding second loop coil antenna, wherein the second loop coil antenna executes corresponding polling work according to the first polling command signal;
when the second loop coil antenna in the ith RFID slave machine finishes polling work, the second radio frequency central control module in the ith RFID slave machine is controlled to modulate a corresponding first synchronous trigger signal to a radio frequency carrier signal, and the radio frequency carrier signal with the first synchronous trigger signal modulated by the second radio frequency central control module is sent out through the second loop coil antenna in the ith RFID slave machine.
6. The wireless synchronous communication method according to claim 5, wherein when the nth RFID slave machine performs wireless synchronous communication toward the RFID master machine, the wireless synchronous communication method comprises the steps of:
controlling a second radio frequency central control module in the Nth RFID slave to send a second polling command signal to the second annular coil antenna, wherein the second annular coil executes corresponding polling work according to the second polling command signal;
when the second loop coil antenna in the Nth RFID slave machine finishes polling work, controlling the second radio frequency central control module to modulate a corresponding second synchronous trigger signal to a radio frequency carrier signal, and sending out the radio frequency carrier signal with the second synchronous trigger signal, which is modulated by the second radio frequency central control module, through the second loop coil antenna;
after the second loop coil antenna of the kth RFID slave receives the radio frequency carrier signal with the second synchronous trigger signal, judging whether the radio frequency carrier signal with the second synchronous trigger signal is sent out by the kth+1th RFID slave, wherein k is a positive integer which is more than or equal to 1 and less than or equal to N-1;
if yes, a second radio frequency central control module in the kth RFID slave machine is controlled to analyze a corresponding second synchronous trigger signal according to a radio frequency carrier signal with the second synchronous trigger signal, and a second polling command signal is sent to the corresponding second loop coil antenna, wherein the second loop coil antenna executes corresponding polling work according to the second polling command signal;
when the second loop coil antenna in the kth RFID slave machine finishes polling work, controlling the second radio frequency central control module in the kth RFID slave machine to modulate a corresponding second synchronous trigger signal to a radio frequency carrier signal, and sending out the radio frequency carrier signal with the second synchronous trigger signal modulated by the second radio frequency central control module through the second loop coil antenna in the kth RFID slave machine;
after the first loop coil antenna receives the radio frequency carrier signal with the second synchronous trigger signal, judging whether the radio frequency carrier signal with the second synchronous trigger signal is sent by the first RFID slave machine;
if yes, the first radio frequency central control module is controlled to analyze a corresponding second synchronous trigger signal according to a radio frequency carrier signal with the second synchronous trigger signal, and a second polling command signal is sent to the corresponding first annular coil antenna, wherein the first annular coil antenna executes corresponding polling work according to the second polling command signal;
when the first loop coil antenna finishes the polling work, the first radio frequency central control module is controlled to modulate the corresponding second synchronous trigger signal to a radio frequency carrier signal, and the radio frequency carrier signal with the second synchronous trigger signal modulated by the first radio frequency central control module is sent out through the first loop coil antenna.
7. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the wireless synchronous communication method according to claim 5 or 6 when executing the computer program.
8. A non-transitory computer readable storage medium having stored thereon a computer program, characterized in that the program when executed by a processor implements the wireless synchronous communication method according to claim 5 or 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311323671.7A CN117394883A (en) | 2023-10-12 | 2023-10-12 | Wireless synchronous communication method based on RFID system and RFID system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311323671.7A CN117394883A (en) | 2023-10-12 | 2023-10-12 | Wireless synchronous communication method based on RFID system and RFID system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117394883A true CN117394883A (en) | 2024-01-12 |
Family
ID=89464158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311323671.7A Pending CN117394883A (en) | 2023-10-12 | 2023-10-12 | Wireless synchronous communication method based on RFID system and RFID system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117394883A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100207754A1 (en) * | 2000-09-08 | 2010-08-19 | Automotive Technologies International, Inc. | Vehicular rfid and sensor assemblies |
| CN102819518A (en) * | 2012-07-25 | 2012-12-12 | 华清科盛(北京)信息技术有限公司 | Radio frequency identification bus system |
| US20170085299A1 (en) * | 2015-09-23 | 2017-03-23 | Qualcomm Incorporated | Systems and methods for multi-mode inductively coupled communication |
| CN108351954A (en) * | 2015-11-03 | 2018-07-31 | 微软技术许可有限责任公司 | Power dispatching for short-distance radio label |
| CN111797947A (en) * | 2020-05-25 | 2020-10-20 | 武汉天喻聚联网络有限公司 | Radio frequency antenna polling method and system |
-
2023
- 2023-10-12 CN CN202311323671.7A patent/CN117394883A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100207754A1 (en) * | 2000-09-08 | 2010-08-19 | Automotive Technologies International, Inc. | Vehicular rfid and sensor assemblies |
| CN102819518A (en) * | 2012-07-25 | 2012-12-12 | 华清科盛(北京)信息技术有限公司 | Radio frequency identification bus system |
| US20170085299A1 (en) * | 2015-09-23 | 2017-03-23 | Qualcomm Incorporated | Systems and methods for multi-mode inductively coupled communication |
| CN108351954A (en) * | 2015-11-03 | 2018-07-31 | 微软技术许可有限责任公司 | Power dispatching for short-distance radio label |
| CN111797947A (en) * | 2020-05-25 | 2020-10-20 | 武汉天喻聚联网络有限公司 | Radio frequency antenna polling method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103324333B (en) | The method of touch control electronic device and reduction communication signal interference touch-control sensing function | |
| EP3001533A1 (en) | Wireless power safety component | |
| CN108282166A (en) | Mutual interference processing method, device, storage medium and electronic equipment coexists in antenna | |
| US9177180B2 (en) | RF tag reader and RF tag information acquisition method | |
| CN104378460A (en) | Wireless device and electromagnetic wave energy absorption ratio reducing method thereof | |
| US20230328724A1 (en) | Transmitter switching method and related apparatuses | |
| CN112470530B (en) | Power density adjusting method, device and storage medium | |
| US20230107204A1 (en) | Communication method and device, and storage medium | |
| EP3293887A1 (en) | Near field communication device | |
| EP3832838B1 (en) | Charging control method and apparatus, and storage medium and wireless charging base | |
| CN113992233B (en) | Antenna switching device and method and electronic equipment | |
| US20130203355A1 (en) | Short-distance wireless communication device | |
| CN117394883A (en) | Wireless synchronous communication method based on RFID system and RFID system | |
| CN116017551A (en) | BSC terminal capability reporting method and device, terminal and network equipment | |
| CN107659341B (en) | Near field communication-type B device | |
| CN215818133U (en) | Wireless data transmission device | |
| CN104467881A (en) | Communication device and relevant signal receiving device thereof | |
| CN113708852B (en) | Antenna in-situ detection method and device | |
| US20200137831A1 (en) | Frequency band authentication method and apparatus for wireless device, and computing device | |
| JP7264777B2 (en) | Wireless device, self-diagnostic method and program for wireless device | |
| CN111224722B (en) | Antenna head end detection method and device | |
| CN103491041A (en) | Synchronization method, base station and terminal | |
| CN105406891A (en) | Carrier aggregation mode setting method for communication terminal and communication terminal | |
| CN107205272B (en) | Communication method, communication device, computer-readable storage medium and electronic equipment | |
| JP6497020B2 (en) | Communication device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |