CN112528688A - Radio frequency tag control method, response method and device, storage medium, reader and radio frequency tag - Google Patents
Radio frequency tag control method, response method and device, storage medium, reader and radio frequency tag Download PDFInfo
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- CN112528688A CN112528688A CN201910887805.5A CN201910887805A CN112528688A CN 112528688 A CN112528688 A CN 112528688A CN 201910887805 A CN201910887805 A CN 201910887805A CN 112528688 A CN112528688 A CN 112528688A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10158—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10297—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
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- 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
A radio frequency label control method, a response method and a device, a storage medium, a reader and a radio frequency label are provided, wherein the radio frequency label control method comprises the following steps: sending a first instruction so that a first radio frequency tag receiving the first instruction detects electric quantity; sending a second instruction so that a second radio frequency tag receiving the second instruction sends a first response; sending a third instruction, so that a third radio frequency tag receiving the third instruction sends a second response in response to the third instruction; at least when the electric quantity of the tag is larger than a preset threshold value, sending a fourth instruction to the third radio frequency tag so that the third radio frequency tag receiving the fourth instruction can enable the power supply module to supply power; sending refresh data to the third radio frequency tag. The technical scheme of the invention can manage the power supply of the label and realize effective interaction of data.
Description
Technical Field
The invention relates to the technical field of radio frequency, in particular to a radio frequency tag control method, a response device, a storage medium, a reader and a radio frequency tag.
Background
Radio Frequency Identification (RFID) is a non-contact automatic Identification technology, which automatically identifies a target object and obtains related data through a Radio Frequency signal, and can work in various severe environments without manual intervention. The RFID can identify high-speed moving objects and can identify a plurality of electronic tags simultaneously, and the operation is quick and convenient.
An RFID system is a simple wireless system with only two basic devices that are used to control, detect and track objects. An RFID system consists of one interrogator (also called reader) and many transponders (also called or electronic tags). The RFID is divided into Low Frequency (LF), High Frequency (HF), Ultra High Frequency (UHF), and Microwave (MW) according to different application frequencies, and the corresponding representative frequencies are: low frequency below 135KHz, high frequency 13.56MHz, ultrahigh frequency 860M-960MHz, microwave 2.4GHz and 5.8 GHz.
Electronic tags (Tag) are usually composed of a coupling element and a chip of a radio frequency Tag, each electronic Tag has a unique electronic code, and is attached to an object to identify a target object; the Reader (Reader) is a device for reading (sometimes writing) electronic tag information and can be designed to be handheld or fixed; an Antenna (Antenna) passes radio frequency signals between the electronic tag and the reader. The basic working principle of the RFID technology is not complex, after the electronic Tag enters a magnetic field, the electronic Tag receives a radio frequency signal sent by a reader, and product information (Passive Tag or Passive Tag) stored in a chip of the radio frequency Tag is sent out by means of energy obtained by induced current; or actively sending a signal of a certain frequency (Active Tag, Active Tag or Active Tag); the reader reads and decodes the information and sends the information to the central information system for relevant data processing.
The reader can be a reading or reading/writing device according to different structures and technologies used, and is an RFID system information control and processing center. The reader is generally composed of a coupling module, a transceiver module, a control module and an interface unit. The reader and the transponder generally exchange information in a half-duplex communication mode, and the reader provides energy and time sequence for the passive transponder through coupling. In practical application, the management functions of collecting, processing, remotely transmitting and the like of the object identification information can be further realized through an Ethernet (Ethernet) or a Wireless Local Area Network (WLAN) and the like. Transponders are information carriers of RFID systems, and at present, most transponders are passive units consisting of coupling elements (coils, microstrip antennas, etc.) and chips of micro radio frequency tags.
However, with the development of RFID technology, the RFID tag is gradually developed from a closed-loop system to an intermediate node of a passive wireless scheme, that is, the RFID tag can provide energy to a third device, perform data interaction with the third device, and return an interaction result to a reader. In the above scenario, how to manage the power supply of the tag and achieve effective interaction of data is an urgent problem to be solved.
Disclosure of Invention
The invention solves the technical problem of how to manage the power supply of the label and realize effective interaction of data.
In order to solve the above technical problem, an embodiment of the present invention provides a radio frequency tag control method, where the radio frequency tag control method includes: sending a first instruction so that a first radio frequency tag receiving the first instruction detects electric quantity; sending a second instruction so that a second radio frequency tag receiving the second instruction sends a first response, wherein the first response comprises handshake authentication information; sending a third instruction, so that a third radio frequency tag receiving the third instruction sends a second response in response to the third instruction, where the second response includes identification information of the radio frequency tag and detected tag power, and the third instruction includes the handshake authentication information; at least when the electric quantity of the tag is larger than a preset threshold value, sending a fourth instruction to the third radio frequency tag so that the third radio frequency tag receiving the fourth instruction can enable the power supply module to supply power; sending refresh data to the third radio frequency tag.
Optionally, the sending the second instruction includes: sending a first sub-instruction so that a second radio frequency tag receiving the first sub-instruction generates a random number; sending a second sub-instruction to enable a second radio frequency tag receiving the second sub-instruction to divide the random number by 2; and sending a third sub-instruction so that the second radio frequency tag receiving the third sub-instruction subtracts one from the random number.
Optionally, the sending, by the third radio frequency tag, a second response in response to the third instruction is to send the second response when the random number is 0.
Optionally, before the sending the first instruction, the method further includes: sending a carrier without signal modulation, and maintaining a first preset time period; after the sending the first instruction and before the sending the second instruction, the method further includes: sending a carrier without signal modulation, and maintaining a second preset time period; after the sending the second instruction and before the sending the third instruction, the method further includes: sending a carrier without signal modulation, and maintaining for a third preset time period; after the sending the third instruction and before the sending the fourth instruction, the method further includes: and transmitting the carrier wave without signal modulation, and maintaining the carrier wave for a fourth preset time period.
Optionally, the sending the refresh data to the third rf tag includes: and sending the refresh data in a fifth preset time period.
Optionally, before the sending the first instruction, the method includes: receiving a list to be refreshed, wherein the list to be refreshed comprises the identifiers of a plurality of radio frequency tags to be refreshed and refreshing data corresponding to each radio frequency tag to be refreshed; the sending refresh data to the third radio frequency tag comprises: searching refreshing data corresponding to the third radio frequency tag in the list to be refreshed according to the identifier of the third radio frequency tag; and sending the refresh data corresponding to the third radio frequency tag.
Optionally, the radio frequency tag control method further includes: and if the refresh data corresponding to the third radio frequency tag is successfully sent, removing the identifier of the third radio frequency tag from the list to be refreshed.
Optionally, the sending a fourth instruction to the third radio frequency tag at least when the tag electric quantity is greater than the preset threshold includes: and when the electric quantity of the tag is greater than the preset threshold value and the identifier of the third radio frequency tag is located in the list to be refreshed, sending the fourth instruction to the third radio frequency tag.
Optionally, the first instruction, the second instruction, the third instruction, and the fourth instruction are selected from an instruction set in an EPC C1G2 protocol, where the first instruction, the second instruction, the third instruction, and the fourth instruction are different instructions in the instruction set, respectively.
Optionally, the instruction set includes a select instruction, a query _ adj instruction, a query _ rep instruction, and an ACK.
In order to solve the above technical problem, an embodiment of the present invention further discloses a response method, where the response method includes: receiving a first instruction from a reader, and detecting electric quantity after receiving the first instruction; receiving a second instruction from the reader, and sending a first response after receiving the second instruction, wherein the first response comprises handshake authentication information; receiving a third instruction from the reader, and sending a second response in response to the third instruction after receiving the third instruction, wherein the second response comprises the identification information of the radio frequency tag and the detected tag electric quantity, and the third instruction comprises the handshake authentication information; if the electric quantity of the tag is larger than a preset threshold value, receiving a fourth instruction from the reader, and enabling a power supply module to supply power after receiving the fourth instruction; refresh data is received from the reader.
In order to solve the above technical problem, an embodiment of the present invention further discloses a radio frequency tag control device, which is used for a reader, and the radio frequency tag control device includes: the first instruction sending module is used for sending a first instruction so that the first radio frequency tag receiving the first instruction detects the electric quantity; the second instruction sending module is used for sending a second instruction so that the second radio frequency tag receiving the second instruction sends a first response, and the first response comprises handshake authentication information; a third instruction sending module, configured to send a third instruction, so that a third radio frequency tag receiving the third instruction sends a second response in response to the third instruction, where the second response includes identification information of the radio frequency tag and a detected tag power level, and the third instruction includes the handshake authentication information; the fourth instruction sending module is used for sending a fourth instruction to the third radio frequency tag at least when the electric quantity of the tag is larger than a preset threshold value, so that the third radio frequency tag receiving the fourth instruction can enable the power supply module to supply power; and the refresh data sending module is used for sending refresh data to the third radio frequency tag.
In order to solve the above technical problem, an embodiment of the present invention further discloses a response device, which is used for a radio frequency tag, and the response device includes: the electric quantity detection module is used for receiving a first instruction from a reader and detecting the electric quantity after receiving the first instruction; the authentication information sending module is used for receiving a second instruction from the reader and sending a first response after receiving the second instruction, wherein the first response comprises handshake authentication information; the electric quantity sending module is used for receiving a third instruction from the reader, responding to the third instruction after receiving the third instruction, and sending a second response, wherein the second response comprises the identification information of the radio frequency tag and the detected tag electric quantity, and the third instruction comprises the handshake authentication information; the enabling power supply module is used for receiving a fourth instruction from the reader when the electric quantity of the tag is larger than a preset threshold value, and enabling the power supply module to supply power after receiving the fourth instruction; and the data refreshing receiving module. For receiving refresh data from the reader.
The embodiment of the invention also discloses a reader which comprises a memory and a processor, wherein the memory is stored with a computer instruction capable of running on the processor, and the processor executes the steps of the radio frequency tag control method when running the computer instruction.
The embodiment of the invention also discloses a radio frequency tag, which comprises a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor, and the processor executes the steps of the response method when running the computer instructions.
The embodiment of the invention also discloses a storage medium, wherein a computer instruction is stored on the storage medium, and when the computer instruction runs, the steps of the radio frequency tag control method are executed, or the steps of the response method are executed.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
according to the technical scheme, the first instruction is sent, so that the first radio frequency tag receiving the first instruction detects the electric quantity; sending a second instruction so that a second radio frequency tag receiving the second instruction sends a first response, wherein the first response comprises handshake authentication information; sending a third instruction, so that a third radio frequency tag receiving the third instruction sends a second response in response to the third instruction, where the second response includes identification information of the radio frequency tag and detected tag power, and the third instruction includes the handshake authentication information; at least when the electric quantity of the tag is larger than a preset threshold value, sending a fourth instruction to the third radio frequency tag so that the third radio frequency tag receiving the fourth instruction can enable the power supply module to supply power; sending refresh data to the third radio frequency tag. In the technical scheme of the invention, the reader sends different instructions to the radio frequency tag, so that the radio frequency tag can respond to different instructions to execute different actions, specifically, the actions include detecting electric quantity, sending tag electric quantity and the like.
Drawings
Fig. 1 is a flowchart of a radio frequency tag control method according to an embodiment of the present invention;
FIG. 2 is a flowchart of one embodiment of step S102 shown in FIG. 1;
FIG. 3 is a flow chart of another method for controlling a radio frequency tag according to an embodiment of the present invention;
FIG. 4 is a flow chart of a method for controlling a radio frequency tag according to another embodiment of the present invention;
FIG. 5 is a flow chart of a response method of an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a radio frequency tag control device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a responding apparatus according to an embodiment of the present invention.
Detailed Description
As described in the background art, how to manage the power supply of the tag and achieve effective interaction of data in a passive tag or a passive tag scene is an urgent problem to be solved.
In the technical scheme of the invention, the reader sends different instructions to the radio frequency tag, so that the radio frequency tag can respond to different instructions to execute different actions, specifically, the actions include detecting electric quantity, sending tag electric quantity and the like.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 is a flowchart of a radio frequency tag control method according to an embodiment of the present invention.
The radio frequency tag control method may be used on the reader side, that is, the reader may perform the steps of the method shown in fig. 1.
The radio frequency tag control method may include the steps of:
step S101: sending a first instruction so that a first radio frequency tag receiving the first instruction detects electric quantity;
step S102: sending a second instruction so that a second radio frequency tag receiving the second instruction sends a first response, wherein the first response comprises handshake authentication information;
step S103: sending a third instruction, so that a third radio frequency tag receiving the third instruction sends a second response in response to the third instruction, where the second response includes identification information of the radio frequency tag and detected tag power, and the third instruction includes the handshake authentication information;
step S104: at least when the electric quantity of the tag is larger than a preset threshold value, sending a fourth instruction to the third radio frequency tag so that the third radio frequency tag receiving the fourth instruction can enable the power supply module to supply power;
step S105: sending refresh data to the third radio frequency tag.
It should be noted that the sequence numbers of the steps in this embodiment do not represent a limitation on the execution sequence of the steps.
The first instruction, the second instruction, the third instruction, and the fourth instruction in this embodiment are different instructions.
Since the reader and the chip of the rf tag are in close range communication, in the specific implementation of step S101, after the reader sends the first command, the rf tag within the communication range of the reader can receive the first command. The first radio frequency tag is a radio frequency tag which receives the first instruction.
The first radio frequency tag can execute an operation of detecting the electric quantity in response to the first instruction, that is, the first radio frequency tag detects the tag electric quantity of the first radio frequency tag.
It should be noted that, as to the specific implementation of detecting the electric quantity by the radio frequency tag, reference may be made to the prior art, and the embodiment of the present invention is not limited thereto.
In an implementation of step S102, the reader may send a second command. The second command is sent after the reader sends the first command.
The second radio frequency tag is a radio frequency tag which receives the second instruction. The second radio frequency tag may send a first response in response to the second instruction, the first response including handshake authentication information. The handshake authentication information is used to establish a secure communication connection between the radio frequency tag and the reader.
Specifically, the handshake authentication information may be a random number internally generated by the second radio frequency tag. For example, a random number of 16 bits.
In a specific implementation of step S103, the reader may send a third instruction, where the third instruction includes the handshake authentication information. The third instruction is sent after the reader sends the second instruction.
And the third radio frequency tag is a radio frequency tag which receives the third instruction and sends a second response. The third rf tag may send a second response in response to the third instruction, the second response including identification information of the rf tag and the detected tag power level.
Specifically, after receiving the third instruction, the third rf tag may first verify whether the handshake authentication information in the third instruction is consistent with the handshake authentication information generated and sent before. If so, sending a second response, otherwise, not sending the second response.
In a specific embodiment of the present invention, the third radio frequency tag transmits the refresh data to a third-party device, the third-party device receives the refresh data and feeds back a refresh flag level to the third radio frequency tag after the refresh is successful, and the third radio frequency tag carries the refresh flag level in a second response to be sent next time. Specifically, after the data refresh is completed, the radio frequency tag does not immediately return the refresh flag level to the reader, but the refresh flag level is recorded inside the radio frequency tag, and the refresh flag level is carried by the next second response of the radio frequency tag and returned to the reader. And if the refresh flag level in the second response returned by the radio frequency tag indicates that the data refresh is completed, the reader considers that the radio frequency tag successfully completes the refresh and does not further implement the steps of enabling, data transmission and refreshing.
Specifically, the third-party device may be an ink screen, an intelligent unlocking device, and the like, which is not limited in this embodiment of the present invention.
In another specific embodiment of the present invention, when the reader determines that the tag electric quantity of the radio frequency tag is greater than the preset threshold, it may be determined that the radio frequency tag can successfully transmit the refresh data, that is, when the reader determines that the tag electric quantity of the radio frequency tag is greater than the preset threshold, it may be determined that the refresh data is successfully refreshed.
In the specific implementation of step S104, the reader may receive a second response sent by the third rf tag, and determine whether the tag power in the second response is greater than a preset threshold. And when the electric quantity of the tag is greater than a preset threshold value, the reader can send a fourth instruction to the third radio frequency tag.
Each radio frequency tag can internally comprise a power supply module which can provide power for the radio frequency tag. The third rf tag may receive a fourth instruction and enable the power module to supply power in response to the fourth instruction. In this case, the third radio frequency tag starts to operate.
Further in the implementation of step S105, the reader may send refresh data to the third rf tag. Because the third radio frequency tag is enabled to supply power to the third-party device, the refresh data can be effectively received by the third-party device after being transmitted out of the third radio frequency tag.
In the embodiment of the invention, the reader sends different instructions to the radio frequency tag, so that the radio frequency tag can respond to different instructions to execute different actions, specifically, the actions include detecting electric quantity, sending tag electric quantity and the like.
As mentioned above, when the tag electric quantity is greater than the preset threshold, the reader sends a fourth instruction to the third rf tag. And when the electric quantity of the tag does not reach the preset threshold value, the reader continuously sends the second instruction.
The number of times the second instruction is repeatedly sent is not limited in the embodiments of the present invention.
In a non-limiting embodiment of the present invention, the first instruction, the second instruction, the third instruction, and the fourth instruction may be custom control instructions, and specific contents and forms may be set according to an actual application environment, which is not limited in this embodiment of the present invention.
In another non-limiting embodiment of the present invention, the first instruction, the second instruction, the third instruction, and the fourth instruction are selected from a set of instructions in an EPC C1G2 protocol, wherein the first instruction, the second instruction, the third instruction, and the fourth instruction are each different instructions of the set of instructions.
In the embodiment of the invention, the instruction set in the EPC C C1G2 protocol (the type 12 generation UHF RFID 860 megahertz-960 megahertz communication protocol) which can also be called as the ISO18000-6C protocol is multiplexed, so that the modification of the bottom layer architecture of the reader can be avoided, and the application range of the technical scheme of the invention is expanded.
Further, the instruction set includes a select instruction, a query _ adj instruction, a query _ rep instruction, and an ACK.
In a specific application scenario, the first instruction may be an instruction Select, and a Target (Target) parameter in the first instruction selects one of 0x101, 0x110, and 0x 111; the second instruction may be an instruction Query; the third instruction may be an instruction Query _ Adj; the fourth instruction may be the instruction Query _ rep; the fifth instruction may be instruction ACK; the sixth instruction may be instruction Select, and the Target (Target) parameter in the sixth instruction selects one of 0x101, 0x110, and 0x 111. More specifically, the Target parameters in the first instruction and the sixth instruction are different, for example, the Target parameter of the first instruction is 0x101, and the Target parameter of the sixth instruction is 0x 110.
The instruction Select, the instruction Query _ Adj, the instruction Query _ rep and the instruction ACK are standard commands under EPC C1G2 protocol
Accordingly, the first response may be a standard response under the EPC C1G2 protocol and the second response may be a standard ACK response under the EPC C1G2 protocol.
In a non-limiting embodiment of the present invention, referring to fig. 2, step S102 shown in fig. 1 may include the following steps:
step S201: sending a first sub-instruction so that a second radio frequency tag receiving the first sub-instruction generates a random number;
step S202: sending a second sub-instruction to enable a second radio frequency tag receiving the second sub-instruction to divide the random number by 2;
step S203: and sending a third sub-instruction so that the second radio frequency tag receiving the third sub-instruction subtracts one from the random number.
In a specific implementation, the second instruction may include a plurality of sub-instructions, that is, a first sub-instruction, a second sub-instruction, and a third sub-instruction. The second radio frequency tag may perform different operations in response to different sub-instructions.
It should be noted that, in practical applications, one of the steps S202 and S203 may be selectively executed.
In this embodiment, the reader may cause the radio frequency tag to perform different actions and generate different random numbers by sending different sub-instructions. The third device tag does not send a second response until the random number reaches a certain value. In a multi-tag scene, namely when a plurality of radio frequency tags are arranged in the communication range of the reader, the plurality of radio frequency tags can be prevented from simultaneously sending the second response by the above method, so that the collision of data sent by the tags is avoided, and the efficiency of radio frequency interaction is further improved.
In a specific application scenario, after receiving the first sub-instruction, the radio frequency tags in the field each generate a random number, and under the adjustment of the second sub-instruction and the third sub-instruction, the radio frequency tags reach a state where the internal random number is 0 in a staggered order. And for any radio frequency tag with the random number of 0, returning a second response, and after judging the second response, determining whether to continue applying the fourth command and data or to continue repeatedly sending the second sub-command and the third sub-command by the reader. Therefore, even if a large number of radio frequency tags exist in the field and the radio frequency tags in the field have different wireless energy receiving capabilities (even if a part of the tags can never receive enough energy), the mechanism can realize refreshing of the maximum number of tags in the shortest time through a mechanism with sensitivity priority and random collision prevention in a radio frequency tag set with the same level of sensitivity.
Further, the third rf tag sending a second response in response to the third instruction is sending the second response when the random number is 0.
Specifically, the random number may be directly generated by the second radio frequency tag when the first sub-instruction is received, may be calculated when the second sub-instruction is received, and may also be calculated when the third sub-instruction is received.
In one non-limiting embodiment of the present invention, referring to fig. 3, the method may include the following steps:
step S301: and transmitting the carrier without signal modulation and maintaining the carrier for a first preset time period.
In this embodiment, since the rf tag needs the rf energy around the rf tag to charge, before the reader sends the first command, the carrier wave without signal modulation may be sent with the holding time being the first preset time period. Radio frequency tags within communication range of the reader may be charged using the radio frequency energy of the carrier.
Step S302: sending a carrier without signal modulation, and maintaining a second preset time period;
step S303: sending a carrier without signal modulation, and maintaining for a third preset time period;
step S304: and transmitting the carrier wave without signal modulation, and maintaining the carrier wave for a fourth preset time period.
In this embodiment, since the radio frequency tag has a reset function, and is reset when a signal with the reader is interrupted, in order to ensure continuous and effective communication between the reader and the radio frequency tag, a carrier without signal modulation needs to be sent between the reader sending the first instruction, the second instruction, the third instruction, and the fourth instruction, so as to ensure that the radio frequency tag is not reset when power failure occurs between every two instructions.
In addition, when the radio frequency tag responds to each instruction to execute the action, because certain time is needed for executing the action, the reader can send a carrier wave without signal modulation in the time so as to ensure the communication continuity. That is to say, the time lengths of the second preset time period, the third preset time period, and the fourth preset time period may be set by referring to the time required by the radio frequency tag to respond to the instruction to perform the action, which is not limited in the embodiment of the present invention.
In one non-limiting embodiment of the present invention, step S105 shown in fig. 1 may include the following steps:
step S305: and sending the refresh data in a fifth preset time period.
In consideration of the fact that the data amount of the refresh data sent by the reader to each rf tag may be different, the embodiment may send the refresh data within a time period of a fixed length, that is, send the refresh data within a fifth preset time period
In a non-limiting embodiment of the present invention, referring to fig. 4, step S101 shown in fig. 1 may include the following steps:
step S401: receiving a list to be refreshed, wherein the list to be refreshed comprises the identifiers of a plurality of radio frequency tags to be refreshed and refreshing data corresponding to each radio frequency tag to be refreshed.
In this embodiment, the list to be refreshed may be preset by the user. The list to be refreshed comprises the identifiers of the plurality of radio frequency tags to be refreshed and the refreshing data corresponding to each radio frequency tag to be refreshed.
It is understood that the refresh data in the list to be refreshed may be the same or different.
Further, when sending the refresh data, the reader may send the refresh data to all the radio frequency tags, and the radio frequency tags may determine whether the corresponding refresh data is present according to the identifier of the radio frequency tag in the list to be refreshed.
Step S105 shown in fig. 1 may include the following steps:
step S402: searching refreshing data corresponding to the third radio frequency tag in the list to be refreshed according to the identifier of the third radio frequency tag;
step S403: and sending the refresh data corresponding to the third radio frequency tag.
If the identifier of the third radio frequency tag exists in the list to be refreshed, only the third radio frequency tag can receive the refreshing data after the reader sends the refreshing data corresponding to the identifier to all the radio frequency tags, so that the receiving orderliness of the refreshing data is ensured.
Further, the method may further comprise the steps of: step S404: and if the refresh data corresponding to the third radio frequency tag is successfully sent, removing the identifier of the third radio frequency tag from the list to be refreshed.
In this embodiment, in order to ensure the accuracy of data transmission, after the refresh data is successfully transmitted, the identifier of the third rf tag may be removed from the list to be refreshed, so as to avoid repeatedly transmitting data to the third rf tag.
Further, step S104 shown in fig. 1 may include the following steps: and when the electric quantity of the tag is greater than the preset threshold value and the identifier of the third radio frequency tag is located in the list to be refreshed, sending the fourth instruction to the third radio frequency tag.
And the fourth instruction is used for controlling a power supply module of the radio frequency tag to supply power, so that the radio frequency tag starts to work. And sending a fourth instruction to the third radio frequency tag to control the third radio frequency tag to start working under the condition that the electric quantity of the tag is greater than the preset threshold value and the identifier of the third radio frequency tag is located in the list to be refreshed, which indicates that the radio frequency tag can start working and needs to receive data.
If the electric quantity of the tag is greater than the preset threshold value but the identifier of the third radio frequency tag is not located in the list to be refreshed, it indicates that the third radio frequency tag can work but does not have data to be received, and in this case, the third radio frequency tag may not be started, so as to avoid wasting the electric quantity of the radio frequency tag. If the electric quantity of the tag is not greater than the preset threshold value but the identifier of the third radio frequency tag is located in the list to be refreshed, it indicates that the third radio frequency tag has data to be received but cannot work, and in this case, the third radio frequency tag may not be started.
In a specific application scenario of the present invention, the reader sends a carrier without signal modulation to the field and maintains the first preset time period T1. Then, the reader modulates the first command 1 to a carrier wave to transmit to the field area. After the radio frequency tag is powered on, the chip of the radio frequency tag starts to implement electric quantity detection after receiving the first instruction 1.
After the first command 1 is sent, the reader continues to send the carrier wave without signal modulation, and the second preset time period T2 is maintained. Then, the reader modulates the first sub-command 2 to a carrier wave to send to the field area. The radio frequency tag receives the first sub-instruction 2 and internally generates a random number controlled by the parameter of the first sub-instruction 2.
After the first sub-command 2 is sent, the reader maintains the carrier for a third preset time period T3. The reader may choose to send the second sub-instruction 3 for the time T4 or choose to send the third sub-instruction 4 for the time T5. When the radio frequency tag receives the second sub-instruction 3, dividing the internal random number by 2; and when the radio frequency tag receives the third sub-instruction 4, subtracting 1 from the internal random number. When the internal random number of the radio frequency tag is equal to 0, the tag sends a first response 1. The first response 1 includes handshake authentication information.
Specifically, the reader may repeatedly send the second sub-command 3 and the third sub-command 4 a plurality of times; the radio frequency tag is possible to respond to any one of the first sub-instruction 2, the second sub-instruction 3 and the third sub-instruction 4.
When the reader receives the first response 1 of any radio frequency tag, the reader sends a third instruction 5 to the radio frequency tag. The radio frequency tag receives the third instruction 5, verifies that the third instruction 5 contains correct verification information of the first response 1 sent by the tag, and sends a second response 2. The second response 2 comprises at least the ID of the radio frequency tag and the current tag power.
When the reader receives the response (marked as the second response 2) of the third instruction 5 from the radio frequency tag within the fourth preset time period T5, the reader verifies and parses the content of the second response 2. And the reader verifies the ID of the tag and judges tag electric quantity information. And if the ID of the tag passes the verification and the electric quantity of the tag is larger than the preset threshold value, the reader continuously sends a fourth command 6 for controlling to the radio frequency tag. And the radio frequency tag receives the fourth instruction 6, and outputs an enabling signal which is used as the trigger for starting other modules (such as a power supply module) of the tag except the chip of the radio frequency tag.
Then the reader sends one or more sections of refreshing data to the radio frequency tag in a fifth preset time period T6; each section of data comprises a lead code, a data body and a stop code. The data preamble code must be distinguished from all instruction codes supported by the chip of the radio frequency tag to avoid the chip of the radio frequency tag from responding incorrectly. The radio frequency tag receives refreshing data, a data pin of the radio frequency tag works in a transparent transmission mode, and the pin outputs the data from the reader received by a chip of the radio frequency tag in a transparent transmission mode. And after the radio frequency tag is powered off, the radio frequency tag is restored to the initial state.
The reader continues to maintain the carrier for time T7. The reader continues to repeat the transmission of the second sub-command 3 and the third sub-command 4 until there are new tag responses or the number of transmissions of the second sub-command 3 and the third sub-command 4 has reached the upper limit of the predetermined value. If a new tag responds, a third instruction 5 is sent to the new tag until T7. The reader repeatedly sends the second sub-command 3 and the third sub-command 4. If the sending number of the second sub-command 3 and the third sub-command 4 reaches the upper limit of the set value, the reader closes the carrier wave, and the command is finished.
Referring to fig. 5, an embodiment of the present invention further discloses a response method, which is used at the radio frequency tag side, that is, the radio frequency tag may perform each step of the method shown in fig. 5.
The response method may include the steps of:
step S501: receiving a first instruction from a reader, and detecting electric quantity after receiving the first instruction;
step S502: receiving a second instruction from the reader, and sending a first response after receiving the second instruction, wherein the first response comprises handshake authentication information;
step S503: receiving a third instruction from the reader, and sending a second response in response to the third instruction after receiving the third instruction, wherein the second response comprises the identification information of the radio frequency tag and the detected tag electric quantity, and the third instruction comprises the handshake authentication information;
step S504: if the electric quantity of the tag is larger than a preset threshold value, receiving a fourth instruction from the reader, and enabling a power supply module to supply power after receiving the fourth instruction;
step S505: refresh data is received from the reader.
For more specific embodiments of the response method, please refer to the related descriptions in fig. 1 to 4, which are not described herein again.
Referring to fig. 6, an embodiment of the present invention further discloses a radio frequency tag control device 60, where the radio frequency tag control device 60 includes:
a first instruction sending module 601, configured to send a first instruction, so that a first radio frequency tag receiving the first instruction detects electric quantity;
a second instruction sending module 602, configured to send a second instruction, so that a second radio frequency tag that receives the second instruction sends a first response, where the first response includes handshake authentication information;
a third instruction sending module 603, configured to send a third instruction, so that a third radio frequency tag receiving the third instruction sends a second response in response to the third instruction, where the second response includes identification information of the radio frequency tag and a detected tag power level, and the third instruction includes the handshake authentication information;
a fourth instruction sending module 604, configured to send a fourth instruction to the third radio frequency tag at least when the tag electric quantity is greater than a preset threshold, so that the third radio frequency tag receiving the fourth instruction enables the power supply module to supply power;
a refresh data sending module 605, configured to send refresh data to the third rf tag.
For more details of the operation principle and the operation mode of the rf tag control device 60, reference may be made to the relevant descriptions in fig. 1 to fig. 4, which are not described herein again.
Referring to fig. 7, an embodiment of the present invention further discloses a response device 70, where the response device 70 includes:
the electric quantity detection module 701 is used for receiving a first instruction from a reader and detecting the electric quantity after receiving the first instruction;
an authentication information sending module 702, configured to receive a second instruction from the reader, and send a first response after receiving the second instruction, where the first response includes handshake authentication information;
the electric quantity sending module 703 is configured to receive a third instruction from the reader, and send a second response in response to the third instruction after receiving the third instruction, where the second response includes identification information of the radio frequency tag and the detected tag electric quantity, and the third instruction includes the handshake authentication information;
the enabling power supply module 704 is used for receiving a fourth instruction from the reader when the electric quantity of the tag is greater than a preset threshold value, and enabling the power supply module to supply power after receiving the fourth instruction;
the refresh data receiving module 705. For receiving refresh data from the reader.
For more details of the operation principle and the operation mode of the responding device 70, reference may be made to the related descriptions in fig. 1 to 4, which are not described herein again.
The embodiment of the invention also discloses a storage medium, wherein computer instructions are stored on the storage medium, and when the computer instructions are operated, the steps of the method shown in the figures 1 to 5 can be executed. The storage medium may include ROM, RAM, magnetic or optical disks, etc. The storage medium may further include a non-volatile memory (non-volatile) or a non-transitory memory (non-transient), and the like.
The embodiment of the invention also discloses a reader which can comprise a memory and a processor, wherein the memory stores computer instructions capable of running on the processor. The processor, when executing the computer instructions, may perform the steps of the methods shown in fig. 1-4.
The embodiment of the invention also discloses a radio frequency tag which can comprise a memory and a processor, wherein the memory stores computer instructions capable of running on the processor. The processor, when executing the computer instructions, may perform the steps of the method shown in fig. 5.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (18)
1. A radio frequency tag control method is used for a reader, and is characterized by comprising the following steps:
sending a first instruction so that a first radio frequency tag receiving the first instruction detects electric quantity;
sending a second instruction so that a second radio frequency tag receiving the second instruction sends a first response, wherein the first response comprises handshake authentication information;
sending a third instruction, so that a third radio frequency tag receiving the third instruction sends a second response in response to the third instruction, where the second response includes identification information of the radio frequency tag and detected tag power, and the third instruction includes the handshake authentication information;
at least when the electric quantity of the tag is larger than a preset threshold value, sending a fourth instruction to the third radio frequency tag so that the third radio frequency tag receiving the fourth instruction can enable the power supply module to supply power;
sending refresh data to the third radio frequency tag.
2. The radio frequency tag control method according to claim 1, wherein the sending the second instruction includes:
sending a first sub-instruction so that a second radio frequency tag receiving the first sub-instruction generates a random number;
sending a second sub-instruction to enable a second radio frequency tag receiving the second sub-instruction to divide the random number by 2;
and sending a third sub-instruction so that the second radio frequency tag receiving the third sub-instruction subtracts one from the random number.
3. The rf tag control method of claim 2, wherein the third rf tag sending a second response in response to the third instruction is sending the second response when the random number is 0.
4. The radio frequency tag control method according to claim 1, wherein the sending the first command further comprises:
sending a carrier without signal modulation, and maintaining a first preset time period;
after the sending the first instruction and before the sending the second instruction, the method further includes:
sending a carrier without signal modulation, and maintaining a second preset time period;
after the sending the second instruction and before the sending the third instruction, the method further includes:
sending a carrier without signal modulation, and maintaining for a third preset time period;
after the sending the third instruction and before the sending the fourth instruction, the method further includes:
and transmitting the carrier wave without signal modulation, and maintaining the carrier wave for a fourth preset time period.
5. The radio frequency tag control method according to claim 1, wherein the sending refresh data to the third radio frequency tag comprises:
and sending the refresh data in a fifth preset time period.
6. The radio frequency tag control method according to claim 1, wherein the sending the first command is preceded by:
receiving a list to be refreshed, wherein the list to be refreshed comprises the identifiers of a plurality of radio frequency tags to be refreshed and refreshing data corresponding to each radio frequency tag to be refreshed;
the sending refresh data to the third radio frequency tag comprises:
searching refreshing data corresponding to the third radio frequency tag in the list to be refreshed according to the identifier of the third radio frequency tag;
and sending the refresh data corresponding to the third radio frequency tag.
7. The radio frequency tag control method according to claim 6, further comprising:
and if the refresh data corresponding to the third radio frequency tag is successfully sent, removing the identifier of the third radio frequency tag from the list to be refreshed.
8. The method according to claim 6, wherein the sending a fourth instruction to the third rf tag at least when the tag power level is greater than a preset threshold comprises:
and when the electric quantity of the tag is greater than the preset threshold value and the identifier of the third radio frequency tag is located in the list to be refreshed, sending the fourth instruction to the third radio frequency tag.
9. The radio frequency tag control method according to claim 1, wherein the third radio frequency tag transmits the refresh data to a third-party device, the third-party device receives the refresh data and feeds back a refresh flag level to the third radio frequency tag after the refresh is successful, and the third radio frequency tag carries the refresh flag level in a second response to be sent next time.
10. The radio frequency tag control method according to claim 1, further comprising:
and when the electric quantity of the tag does not reach the preset threshold value, continuously sending the second instruction.
11. The radio frequency tag control method according to claim 1, wherein the first instruction, the second instruction, the third instruction, and the fourth instruction are selected from a set of instructions in an EPC C1G2 protocol, wherein the first instruction, the second instruction, the third instruction, and the fourth instruction are each different instructions in the set of instructions.
12. The radio frequency tag control method according to claim 11, wherein the instruction set includes a select instruction, a query _ adj instruction, a query _ rep instruction, and an ACK.
13. A response method for a radio frequency tag, comprising:
receiving a first instruction from a reader, and detecting electric quantity after receiving the first instruction;
receiving a second instruction from the reader, and sending a first response after receiving the second instruction, wherein the first response comprises handshake authentication information;
receiving a third instruction from the reader, and sending a second response in response to the third instruction after receiving the third instruction, wherein the second response comprises the identification information of the radio frequency tag and the detected tag electric quantity, and the third instruction comprises the handshake authentication information;
if the electric quantity of the tag is larger than a preset threshold value, receiving a fourth instruction from the reader, and enabling a power supply module to supply power after receiving the fourth instruction;
refresh data is received from the reader.
14. A radio frequency tag control apparatus for a reader, comprising:
the first instruction sending module is used for sending a first instruction so that the first radio frequency tag receiving the first instruction detects the electric quantity;
the second instruction sending module is used for sending a second instruction so that the second radio frequency tag receiving the second instruction sends a first response, and the first response comprises handshake authentication information;
a third instruction sending module, configured to send a third instruction, so that a third radio frequency tag receiving the third instruction sends a second response in response to the third instruction, where the second response includes identification information of the radio frequency tag and a detected tag power level, and the third instruction includes the handshake authentication information;
the fourth instruction sending module is used for sending a fourth instruction to the third radio frequency tag at least when the electric quantity of the tag is larger than a preset threshold value, so that the third radio frequency tag receiving the fourth instruction can enable the power supply module to supply power;
and the refresh data sending module is used for sending refresh data to the third radio frequency tag.
15. A response device for a radio frequency tag, comprising:
the electric quantity detection module is used for receiving a first instruction from a reader and detecting the electric quantity after receiving the first instruction;
the authentication information sending module is used for receiving a second instruction from the reader and sending a first response after receiving the second instruction, wherein the first response comprises handshake authentication information;
the electric quantity sending module is used for receiving a third instruction from the reader, responding to the third instruction after receiving the third instruction, and sending a second response, wherein the second response comprises the identification information of the radio frequency tag and the detected tag electric quantity, and the third instruction comprises the handshake authentication information;
the enabling power supply module is used for receiving a fourth instruction from the reader when the electric quantity of the tag is larger than a preset threshold value, and enabling the power supply module to supply power after receiving the fourth instruction;
and the refresh data receiving module is used for receiving refresh data from the reader.
16. A reader comprising a memory and a processor, said memory having stored thereon computer instructions executable on said processor, wherein said processor, when executing said computer instructions, performs the steps of the radio frequency tag control method of any of claims 1 to 12.
17. A radio frequency tag comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the response method of claim 13.
18. A storage medium having stored thereon computer instructions, wherein said computer instructions are operable to perform the steps of the radio frequency tag control method of any one of claims 1 to 12, or to perform the steps of the response method of claim 13.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114330625A (en) * | 2021-11-18 | 2022-04-12 | 北京智芯微电子科技有限公司 | Passive radio frequency tag verification system and control method thereof |
| CN116227513A (en) * | 2022-12-29 | 2023-06-06 | 深圳市铨顺宏科技有限公司 | Tag communication method, device, equipment and storage medium based on ultrahigh frequency |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1529182A (en) * | 2003-10-01 | 2004-09-15 | 复旦大学 | Electricity-quantity identification of active radio-frequency identification card cell and charging method thereof |
| US20070229230A1 (en) * | 2006-03-16 | 2007-10-04 | Symbol Technologies, Inc. | RFID tag data retention verification and refresh |
| WO2007147306A1 (en) * | 2006-06-13 | 2007-12-27 | Zte Corporation | A communication method between reader and label in the rfid system |
| JP2009065514A (en) * | 2007-09-07 | 2009-03-26 | Denso Wave Inc | Rf tag system and rf tag |
| JP2009064315A (en) * | 2007-09-07 | 2009-03-26 | Denso Wave Inc | Rf tag system, rf tag, and tag reader |
| JP2009181433A (en) * | 2008-01-31 | 2009-08-13 | Sharp Corp | Noncontact ic card |
| CN101655900A (en) * | 2008-08-20 | 2010-02-24 | 中兴通讯股份有限公司 | Method and system for evaluating radio frequency identification electronic label |
| US20120075075A1 (en) * | 2009-06-12 | 2012-03-29 | Zte Corporation | Label anti-collision method and system |
| US20120256492A1 (en) * | 2006-03-31 | 2012-10-11 | Siemens Corporate Research, Inc. | Passive RF Energy Harvesting Scheme For Wireless Sensor |
| US20130187762A1 (en) * | 2012-01-20 | 2013-07-25 | Alien Technology Corporation | Rfid protocols with non-interacting variants |
| KR20130128801A (en) * | 2012-05-18 | 2013-11-27 | 전북대학교산학협력단 | System and method for contactless charging with rf signal of wireless communication band |
| CN103679082A (en) * | 2012-09-24 | 2014-03-26 | 国民技术股份有限公司 | Radio frequency tag, tag reader and radio frequency tag charging method |
| CN103714370A (en) * | 2013-12-11 | 2014-04-09 | 广西凯贝科技有限公司 | Lithium-battery-powered half-duplex RFID chip and system thereof |
| JP2014179697A (en) * | 2013-03-13 | 2014-09-25 | Ricoh Co Ltd | Radio terminal and position management system |
| CN105046314A (en) * | 2015-07-22 | 2015-11-11 | 杭州浙港智能科技有限公司 | NFC (near field communication) radio-frequency protocol based body temperature detection tag applied to human body surface and temperature measurement method for body temperature detection tag |
| WO2016099753A1 (en) * | 2014-12-17 | 2016-06-23 | Intel Corporation | Radio frequency identification (rfid) based defect detection in ssds |
| JP2017040075A (en) * | 2015-08-19 | 2017-02-23 | 三菱電機株式会社 | Tag device and authentication system |
| CN106650879A (en) * | 2016-12-22 | 2017-05-10 | Tcl集团股份有限公司 | Intelligent RFID tag and working method thereof |
| CN107944518A (en) * | 2017-12-18 | 2018-04-20 | 北京铂阳顶荣光伏科技有限公司 | A kind of solar powered counter alignment system and method |
| CN109436176A (en) * | 2018-11-30 | 2019-03-08 | 上海钧正网络科技有限公司 | A kind of burglary-resisting system, theft preventing method and electric vehicle |
-
2019
- 2019-09-19 CN CN201910887805.5A patent/CN112528688B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1529182A (en) * | 2003-10-01 | 2004-09-15 | 复旦大学 | Electricity-quantity identification of active radio-frequency identification card cell and charging method thereof |
| US20070229230A1 (en) * | 2006-03-16 | 2007-10-04 | Symbol Technologies, Inc. | RFID tag data retention verification and refresh |
| US20120256492A1 (en) * | 2006-03-31 | 2012-10-11 | Siemens Corporate Research, Inc. | Passive RF Energy Harvesting Scheme For Wireless Sensor |
| WO2007147306A1 (en) * | 2006-06-13 | 2007-12-27 | Zte Corporation | A communication method between reader and label in the rfid system |
| JP2009065514A (en) * | 2007-09-07 | 2009-03-26 | Denso Wave Inc | Rf tag system and rf tag |
| JP2009064315A (en) * | 2007-09-07 | 2009-03-26 | Denso Wave Inc | Rf tag system, rf tag, and tag reader |
| JP2009181433A (en) * | 2008-01-31 | 2009-08-13 | Sharp Corp | Noncontact ic card |
| CN101655900A (en) * | 2008-08-20 | 2010-02-24 | 中兴通讯股份有限公司 | Method and system for evaluating radio frequency identification electronic label |
| US20120075075A1 (en) * | 2009-06-12 | 2012-03-29 | Zte Corporation | Label anti-collision method and system |
| US20130187762A1 (en) * | 2012-01-20 | 2013-07-25 | Alien Technology Corporation | Rfid protocols with non-interacting variants |
| KR20130128801A (en) * | 2012-05-18 | 2013-11-27 | 전북대학교산학협력단 | System and method for contactless charging with rf signal of wireless communication band |
| CN103679082A (en) * | 2012-09-24 | 2014-03-26 | 国民技术股份有限公司 | Radio frequency tag, tag reader and radio frequency tag charging method |
| JP2014179697A (en) * | 2013-03-13 | 2014-09-25 | Ricoh Co Ltd | Radio terminal and position management system |
| CN103714370A (en) * | 2013-12-11 | 2014-04-09 | 广西凯贝科技有限公司 | Lithium-battery-powered half-duplex RFID chip and system thereof |
| WO2016099753A1 (en) * | 2014-12-17 | 2016-06-23 | Intel Corporation | Radio frequency identification (rfid) based defect detection in ssds |
| CN105046314A (en) * | 2015-07-22 | 2015-11-11 | 杭州浙港智能科技有限公司 | NFC (near field communication) radio-frequency protocol based body temperature detection tag applied to human body surface and temperature measurement method for body temperature detection tag |
| JP2017040075A (en) * | 2015-08-19 | 2017-02-23 | 三菱電機株式会社 | Tag device and authentication system |
| CN106650879A (en) * | 2016-12-22 | 2017-05-10 | Tcl集团股份有限公司 | Intelligent RFID tag and working method thereof |
| CN107944518A (en) * | 2017-12-18 | 2018-04-20 | 北京铂阳顶荣光伏科技有限公司 | A kind of solar powered counter alignment system and method |
| CN109436176A (en) * | 2018-11-30 | 2019-03-08 | 上海钧正网络科技有限公司 | A kind of burglary-resisting system, theft preventing method and electric vehicle |
Non-Patent Citations (2)
| Title |
|---|
| 宋小伟等: "RFID系统可靠性仿真测试", 《贵州师范大学学报(自然科学版)》 * |
| 宋小伟等: "RFID系统可靠性仿真测试", 《贵州师范大学学报(自然科学版)》, no. 01, 15 February 2013 (2013-02-15) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114330625A (en) * | 2021-11-18 | 2022-04-12 | 北京智芯微电子科技有限公司 | Passive radio frequency tag verification system and control method thereof |
| CN114330625B (en) * | 2021-11-18 | 2024-01-23 | 北京智芯微电子科技有限公司 | Passive radio frequency tag verification system and control method thereof |
| CN116227513A (en) * | 2022-12-29 | 2023-06-06 | 深圳市铨顺宏科技有限公司 | Tag communication method, device, equipment and storage medium based on ultrahigh frequency |
| CN116227513B (en) * | 2022-12-29 | 2023-10-27 | 深圳市铨顺宏科技有限公司 | Tag communication method, device, equipment and storage medium based on ultrahigh frequency |
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