CN115270830A - Anti-read-fleeing reading method and system for radio frequency signals and application - Google Patents
Anti-read-fleeing reading method and system for radio frequency signals and application Download PDFInfo
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- CN115270830A CN115270830A CN202210155959.7A CN202210155959A CN115270830A CN 115270830 A CN115270830 A CN 115270830A CN 202210155959 A CN202210155959 A CN 202210155959A CN 115270830 A CN115270830 A CN 115270830A
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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
- G06K7/10019—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 resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
- G06K7/10079—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 resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions
- G06K7/10089—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 resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions the interrogation device using at least one directional antenna or directional interrogation field to resolve the collision
- G06K7/10099—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 resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions the interrogation device using at least one directional antenna or directional interrogation field to resolve the collision the directional field being used for pinpointing the location of the record carrier, e.g. for finding or locating an RFID tag amongst a plurality of RFID tags, each RFID tag being associated with an object, e.g. for physically locating the RFID tagged object in a warehouse
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
- G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
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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
- G06K7/10316—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 using at least one antenna particularly designed for interrogating the wireless record carriers
- G06K7/10356—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 using at least one antenna particularly designed for interrogating the wireless record carriers using a plurality of antennas, e.g. configurations including means to resolve interference between the plurality of antennas
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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
The invention relates to a radio frequency signal anti-fleeing reading method, based on the respective detection of each radio frequency signal transmitted by a main radio frequency read-write antenna, triggering to generate each interference radio frequency signal which is respectively synchronous with each radio frequency signal transmitted by the main radio frequency read-write antenna, acting on other radio frequency tags except a target radio frequency tag, preventing other radio frequency tags from feeding back radio frequency signals to the main radio frequency read-write antenna, ensuring the accuracy of the main radio frequency read-write antenna on the detection of the target radio frequency tag, designing a corresponding system, combining a coupler and a radio frequency demodulation circuit, realizing the respective detection of each radio frequency signal from the main radio frequency read-write antenna, triggering to generate each interference radio frequency signal, acting on other radio frequency tags, applying the designed system to an article conveying belt system, and performing distribution setting aiming at each module in the designed system according to the conveying direction of the conveying belt, thereby effectively improving the radio frequency identification efficiency of articles on the conveying belt.
Description
Technical Field
The invention relates to a method and a system for reading a radio frequency signal in a read-fleeing-preventing manner and application, and belongs to the technical field of radio frequency.
Background
When the RFID reads the Tag through the electromagnetic wave, because the electromagnetic wave cannot control the radiation direction 100%, the electromagnetic wave radiated by the RFID reader through the antenna will read the Tag in the space that should not be read, as shown in fig. 1; in the prior art, a wave absorbing material is generally used, but the wave absorbing material cannot completely absorb a reading-fleeing signal, especially in an open visible space where a Tag cannot be shielded, the correct distance between the Tag and an antenna cannot be accurately judged by using RSSI (received signal strength indicator), and especially when the read-fleeing Tag is very close to the Tag to be read, the problem of the radio frequency reading-fleeing at present cannot be well solved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a radio frequency signal anti-fleeing reading method, which adopts a brand new radio frequency working design, and is designed to trigger the transmission of interference radio frequency signals when detecting that a radio frequency reader-writer transmits the radio frequency signals, so as to ensure the accuracy of return signals of a target radio frequency tag.
The invention adopts the following technical scheme for solving the technical problems: the invention has designed a radio frequency signal to prevent scurrying and reading the method, there are scenes of target radio frequency label and other radio frequency labels in the radio frequency communication range that the main radio frequency reads and writes the aerial and corresponds to, combine the auxiliary radio frequency to read and write the aerial, and the main radio frequency reads and writes the aerial transmitting end and faces the target radio frequency label, the auxiliary radio frequency reads and writes the aerial transmitting end and faces other radio frequency labels, and the distance between main radio frequency label and main radio frequency reads and writes the aerial is smaller than it and auxiliary radio frequency reads and writes the aerial, the distance between other radio frequency labels and auxiliary radio frequency reads and writes the aerial is smaller than it and main radio frequency reads and writes the aerial, carry out the following step in real time, realize the communication between main radio frequency reads and writes the aerial and the target radio frequency label;
step A, detecting whether a main radio frequency read-write antenna transmits a radio frequency signal, if so, entering step B; otherwise, repeating the step A;
and B, controlling the auxiliary radio frequency read-write antenna to transmit radio frequency signals to form interference radio frequency signals, wherein the time length of the interference radio frequency signals is less than that of the radio frequency signals transmitted by the main radio frequency read-write antenna.
As a preferred technical scheme of the invention: the method comprises the following steps AB-1 to AB-5, wherein in the step A, when a radio frequency signal transmitted by a main radio frequency read-write antenna is detected, the step AB-1 is carried out;
step AB-1, judging whether the radio frequency signal transmitted by the main radio frequency reading and writing antenna needs the radio frequency label to return the signal, if yes, entering step B; otherwise, entering the step AB-2;
step AB-2, controlling the auxiliary radio frequency read-write antenna to start to continuously transmit radio frequency signals to form continuous interference radio frequency signals, and entering step AB-3;
step AB-3, detecting whether the main radio frequency reading and writing antenna transmits radio frequency signals, and entering step AB-4; otherwise, repeating the step AB-3;
step AB-4, judging whether the radio frequency signal transmitted by the main radio frequency read-write antenna in the step AB-3 needs the radio frequency label to return the signal, if yes, entering the step AB-5; otherwise, returning to the step AB-3;
and step AB-5, controlling the auxiliary radio frequency read-write antenna to stop continuously transmitting the radio frequency signal, and entering the step B.
As a preferred technical scheme of the invention: in the step B, the time length of the interference radio frequency signal transmitted by the auxiliary radio frequency read-write antenna is less than the time length of any type of radio frequency signal.
In view of the above, the technical problem to be solved by the present invention is to provide a system for implementing a radio frequency signal anti-read method, in which a coupler is introduced to implement the combined application of a main radio frequency read-write antenna and an auxiliary radio frequency read-write antenna, so as to complete the designed radio frequency signal anti-read method, and when a radio frequency signal transmitted by a radio frequency reader is detected, the transmission of an interference radio frequency signal is triggered, so as to ensure the accuracy of a return signal of a target radio frequency tag.
The invention adopts the following technical scheme for solving the technical problems: the invention designs a system of a radio frequency signal anti-read-flee reading method, which is based on a main radio frequency read-write antenna and an auxiliary radio frequency read-write antenna and comprises a coupler and a radio frequency demodulation circuit; the main radio frequency read-write antenna comprises a main radio frequency reader-writer, a coupler and a main radio frequency antenna which are sequentially connected in series, and the auxiliary radio frequency read-write antenna comprises an auxiliary radio frequency reader-writer and an auxiliary radio frequency antenna which are connected with each other; the coupler is connected with the radio frequency demodulation circuit, and the radio frequency demodulation circuit is connected with the auxiliary radio frequency reader-writer;
the transmitting end of the main radio frequency antenna faces the target radio frequency tag, the transmitting end of the auxiliary radio frequency antenna faces other radio frequency tags, the distance between the target radio frequency tag and the main radio frequency antenna is smaller than the distance between the target radio frequency tag and the auxiliary radio frequency antenna, and the distance between the other radio frequency tags and the auxiliary radio frequency antenna is smaller than the distance between the other radio frequency tags and the main radio frequency antenna;
the main radio frequency reader generates radio frequency signals and sends the radio frequency signals to the connected coupler, the coupler divides the received radio frequency signals into two paths, one path of the radio frequency signals is continuously sent to the main radio frequency antenna to realize outward emission, the other path of the radio frequency signals is sent to the radio frequency demodulation circuit, the radio frequency demodulation circuit carries out detection analysis on the received radio frequency signals, the radio frequency demodulation circuit triggers the auxiliary radio frequency reader to generate radio frequency signals, and the auxiliary radio frequency antenna realizes outward emission.
As a preferred technical scheme of the invention: the radio frequency demodulation circuit executes the radio frequency signal anti-fleeing reading method to realize the communication between the main radio frequency reading-writing antenna and the target radio frequency label.
In view of the above, the technical problem to be solved by the present invention is to provide an application of a system for implementing a radio frequency signal anti-read method, which is applied to an article conveyor belt system, and by applying a design method and the system, the radio frequency identification efficiency of articles on a conveyor belt can be effectively improved.
The invention adopts the following technical scheme for solving the technical problems: the invention designs an application of a system of a radio frequency signal anti-fleeing reading method, which is applied to an article conveyor belt system and comprises at least one main radio frequency reading-writing antenna and at least one auxiliary radio frequency reading-writing antenna; each article transmitted in the article conveyor belt system is respectively provided with a radio frequency tag; each main radio frequency reading and writing antenna is arranged on two sides of the conveying belt corresponding to the preset radio frequency detection position, and the transmitting end of each main radio frequency reading and writing antenna points to the conveying belt at the preset radio frequency detection position; each auxiliary radio frequency read-write antenna is positioned at one side of a preset radio frequency detection position facing the conveying direction of the conveying belt, each auxiliary radio frequency read-write antenna is respectively positioned at two sides of the conveying belt at the position, and the transmitting end of each auxiliary radio frequency read-write antenna points to the surface of the conveying belt in the direction facing the conveying direction of the conveying belt;
when the conveyed article is conveyed to the surface area of the conveying belt, which is pointed by the transmitting end of each auxiliary radio frequency read-write antenna, along with the conveying belt, the radio frequency tags on the article form radio frequency tags; when the conveyed article is conveyed to a preset radio frequency detection position along with the conveyor belt, the radio frequency tag on the article forms a target radio frequency tag; the radio frequency demodulation circuit executes the radio frequency signal anti-fleeing reading method to realize the communication between the main radio frequency reading-writing antenna and the target radio frequency label.
Compared with the prior art, the radio frequency signal anti-read-by-read method, the radio frequency signal anti-read-by-read system and the application have the following technical effects:
(1) The designed radio frequency signal anti-fleeing reading method adopts a brand new radio frequency working design, based on the respective detection of the radio frequency signals transmitted by the main radio frequency read-write antenna, the interference radio frequency signals which are respectively synchronous with the radio frequency signals transmitted by the main radio frequency read-write antenna are triggered to be generated and act on other radio frequency tags except the target radio frequency tag, the radio frequency signals are prevented from being fed back to the main radio frequency read-write antenna by other radio frequency tags, the detection accuracy of the target radio frequency tag by the main radio frequency read-write antenna is ensured, a corresponding system is designed, the coupler is combined with the radio frequency demodulation circuit, the respective detection of the radio frequency signals from the main radio frequency read-write antenna is realized, the interference radio frequency signals are triggered to be generated and act on other radio frequency tags, the application of the designed radio frequency signal anti-fleeing reading method is realized, in addition, the designed system is applied to an article conveyor belt system, the distribution setting is carried out aiming at each module in the designed system according to the transmission direction of the conveyor belt, the radio frequency signal anti-fleeing reading method is applied, and the radio frequency identification efficiency of articles conveyed on the conveyor belt can be effectively improved.
Drawings
FIG. 1 is a schematic diagram of the operation of a prior art RF signal;
FIG. 2 is a schematic diagram of the operation of the RF signal anti-tamper reading method according to the present invention;
FIG. 3 is a schematic diagram of the signal transceiving of the RF signal tamper-resistant reading method according to the present invention;
FIG. 4 is a schematic structural diagram of a system for a radio frequency signal tamper-resistant reading method according to the present invention;
fig. 5 is a schematic diagram of an application structure of a system for a radio frequency signal read-through preventing method according to the present invention.
Detailed Description
The following description will explain embodiments of the present invention in further detail with reference to the accompanying drawings.
The invention designs a radio frequency signal anti-fleeing reading method, aiming at the scene that a target radio frequency Tag A and other radio frequency tags Tag B exist in a radio frequency communication range corresponding to a main radio frequency read-write antenna, as shown in figure 2, an auxiliary radio frequency read-write antenna is combined, the transmitting end of the main radio frequency read-write antenna faces the target radio frequency Tag A, the transmitting end of the auxiliary radio frequency read-write antenna faces other radio frequency tags Tag B, the distance between the target radio frequency Tag A and the main radio frequency read-write antenna is smaller than the distance between the target radio frequency Tag A and the auxiliary radio frequency read-write antenna, the distance between the other radio frequency tags Tag B and the auxiliary radio frequency read-write antenna is smaller than the distance between the other radio frequency tags Tag B and the main radio frequency read-write antenna, as shown in figure 3, the following steps A to B are executed in real time, and the communication between the main radio frequency read-write antenna and the target radio frequency Tag A is realized.
Step A, detecting whether a main radio frequency read-write antenna transmits a radio frequency signal, if so, entering step B; otherwise, repeating the step A.
And B, controlling the auxiliary radio frequency read-write antenna to transmit radio frequency signals to form interference radio frequency signals, wherein the time length of the interference radio frequency signals is less than that of the radio frequency signals transmitted by the main radio frequency read-write antenna.
In practical application, different types of radio frequency signals transmitted by the radio frequency reader-writer are specifically considered, wherein the radio frequency signals include radio frequency signals needing corresponding radio frequency Tag return signals and radio frequency signals not needing corresponding radio frequency Tag return signals, and for the execution process from the step a to the step B, the steps AB-1 to AB-5 are further added as follows, so that the following steps a to B are executed in real time as shown in fig. 3, and communication between the main radio frequency read-write antenna and the target radio frequency Tag a is realized.
Step A, detecting whether a main radio frequency read-write antenna transmits a radio frequency signal, if so, entering a step AB-1; otherwise, repeating the step A.
Step AB-1, judging whether the radio frequency signal transmitted by the main radio frequency read-write antenna needs the radio frequency label to return the signal, if yes, entering step B; otherwise, the step AB-2 is entered.
And step AB-2, controlling the auxiliary radio frequency read-write antenna to start to continuously transmit radio frequency signals to form continuous interference radio frequency signals, and entering step AB-3.
Step AB-3, detecting whether the main radio frequency read-write antenna transmits radio frequency signals, and entering step AB-4; otherwise, the step AB-3 is repeatedly executed.
Step AB-4, judge whether the radio frequency signal transmitted by the main radio frequency read-write aerial needs the radio frequency label to return the signal in step AB-3, enter step AB-5 if yes; otherwise, the step AB-3 is returned.
And step AB-5, controlling the auxiliary radio frequency read-write antenna to stop continuously transmitting the radio frequency signal, and entering the step B.
And B, controlling the auxiliary radio frequency read-write antenna to transmit radio frequency signals to form interference radio frequency signals, wherein the time length of the interference radio frequency signals is less than that of the radio frequency signals transmitted by the main radio frequency read-write antenna. And in application, the time length of the interference radio frequency signal transmitted by the auxiliary radio frequency read-write antenna is less than the time length of any type of radio frequency signal.
Therefore, according to the design, in the design and application of the interference radio frequency signal, the time period for the target radio frequency Tag A to return the signal to the main radio frequency reading and writing antenna is set aside, so that the interference radio frequency signal avoids the response of other radio frequency tags to the radio frequency signal from the target radio frequency Tag A, avoids the time period for the target radio frequency Tag A to return the signal to the main radio frequency reading and writing antenna, and can ensure the accurate receiving of the main radio frequency reading and writing antenna to the response signal from the target radio frequency Tag A.
In practical application, the interference rf signal of the design application may adopt a pure carrier or a modulated wave, but the interference effect of the modulated wave is better than that of the pure carrier.
Aiming at the practical application of the designed radio frequency signal anti-read-by-read reading method, the invention further designs a corresponding system, as shown in fig. 4, based on the main radio frequency read-write antenna and the auxiliary radio frequency read-write antenna, a coupler and a radio frequency demodulation circuit are further designed and added; the main radio frequency read-write antenna comprises a main radio frequency reader-writer, a coupler and a main radio frequency antenna which are sequentially connected in series, and the auxiliary radio frequency read-write antenna comprises an auxiliary radio frequency reader-writer and an auxiliary radio frequency antenna which are connected with each other; the coupler is connected with the radio frequency demodulation circuit, and the radio frequency demodulation circuit is connected with the auxiliary radio frequency reader-writer.
As shown in fig. 4, the transmitting end of the main rf antenna faces the target rf Tag a, the transmitting end of the auxiliary rf antenna faces the other rf tags Tag B, the distance between the target rf Tag a and the main rf antenna is less than the distance between the target rf Tag a and the auxiliary rf antenna, and the distance between the other rf tags Tag B and the auxiliary rf antenna is less than the distance between the other rf tags Tag B and the main rf antenna.
The main radio frequency reader generates radio frequency signals, the radio frequency signals are sent to the connected coupler, the coupler divides the received radio frequency signals into two paths, one path of radio frequency signals are continuously sent to the main radio frequency antenna to achieve outward emission, the other path of radio frequency signals are sent to the radio frequency demodulation and modulation circuit, the radio frequency demodulation and transformation circuit conducts detection and analysis on the received radio frequency signals, whether the radio frequency signals emitted by the main radio frequency reader-writer antenna need the radio frequency label return signals or not is judged, the radio frequency demodulation and transformation circuit triggers the auxiliary radio frequency reader-writer to generate the radio frequency signals, and outward emission is achieved through the auxiliary radio frequency antenna.
When the system is applied to an article conveyor belt system, as shown in fig. 5, the system comprises at least one main rf read-write antenna and at least one auxiliary rf read-write antenna; each article transmitted in the article conveyor belt system is respectively provided with a radio frequency tag; each main radio frequency read-write antenna is arranged on two sides of the conveyor belt corresponding to the preset radio frequency detection position, and the transmitting end of each main radio frequency read-write antenna points to the conveyor belt at the preset radio frequency detection position; each auxiliary radio frequency reading and writing antenna is located on one side, facing the conveying direction of the conveying belt, of the preset radio frequency detection position, each auxiliary radio frequency reading and writing antenna is located on two sides of the conveying belt at the position, and the transmitting end of each auxiliary radio frequency reading and writing antenna points to the surface of the conveying belt in the direction facing the conveying direction of the conveying belt.
When the conveyed article is conveyed to the surface area of the conveying belt, which is pointed by the transmitting end of each auxiliary radio frequency read-write antenna, along with the conveying belt, the radio frequency tags on the article form radio frequency tags; when the conveyed article is conveyed to a preset radio frequency detection position along with the conveyor belt, the radio frequency Tag on the article forms a target radio frequency Tag A; the radio frequency demodulation circuit executes the radio frequency signal anti-fleeing reading method to realize the communication between the main radio frequency reading-writing antenna and the target radio frequency Tag A.
In the application of the article conveying belt system, the reading flee can be prevented without shielding, the reading range can be effectively limited, and in the reading situation of the high-speed conveying belt, the distance between the 60cm × 40cm box and the box can be controlled to be 60cm, so that the reading flee can be thoroughly solved, and the reading speed can also be improved.
The anti-fleeing reading method of the radio frequency signals designed by the technical scheme adopts a brand new radio frequency working design, based on the respective detection of the radio frequency signals transmitted by the main radio frequency read-write antenna, the anti-fleeing reading method of the radio frequency signals is triggered to generate the interference radio frequency signals respectively synchronous with the radio frequency signals transmitted by the main radio frequency read-write antenna, and acts on other radio frequency tags Tag B except the target radio frequency Tag A, so as to prevent the other radio frequency tags Tag B from feeding back the radio frequency signals to the main radio frequency read-write antenna, thereby ensuring the detection accuracy of the main radio frequency read-write antenna on the target radio frequency Tag A, and the corresponding system is designed.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (6)
1. A radio frequency signal anti-read-by-read reading method is characterized in that: aiming at the scene that a target radio frequency tag and other radio frequency tags exist in a radio frequency communication range corresponding to a main radio frequency read-write antenna, combining an auxiliary radio frequency read-write antenna, enabling the transmitting end face of the main radio frequency read-write antenna to face the target radio frequency tag, enabling the transmitting end face of the auxiliary radio frequency read-write antenna to face other radio frequency tags, enabling the distance between the target radio frequency tag and the main radio frequency read-write antenna to be smaller than the distance between the target radio frequency tag and the auxiliary radio frequency read-write antenna, enabling the distance between the other radio frequency tags and the auxiliary radio frequency read-write antenna to be smaller than the distance between the other radio frequency tags and the main radio frequency read-write antenna, and executing the following steps in real time to realize communication between the main radio frequency read-write antenna and the target radio frequency tag;
step A, detecting whether a main radio frequency read-write antenna transmits a radio frequency signal, if so, entering step B; otherwise, repeating the step A;
and B, controlling the auxiliary radio frequency read-write antenna to transmit radio frequency signals to form interference radio frequency signals, wherein the time length of the interference radio frequency signals is less than that of the radio frequency signals transmitted by the main radio frequency read-write antenna.
2. The radio frequency signal tamper-resistant reading method according to claim 1, wherein: the method also comprises the following steps AB-1 to AB-5, wherein in the step A, when the main radio frequency read-write antenna is detected to transmit a radio frequency signal, the step AB-1 is started;
step AB-1, judging whether the radio frequency signal transmitted by the main radio frequency read-write antenna needs the radio frequency label to return the signal, if yes, entering step B; otherwise, entering the step AB-2;
step AB-2, controlling the auxiliary radio frequency read-write antenna to start to continuously transmit radio frequency signals to form continuous interference radio frequency signals, and entering step AB-3;
step AB-3, detecting whether the main radio frequency read-write antenna transmits radio frequency signals, and entering step AB-4; otherwise, repeating the step AB-3;
step AB-4, judging whether the radio frequency signal transmitted by the main radio frequency read-write antenna in the step AB-3 needs the radio frequency label to return the signal, if yes, entering the step AB-5; otherwise, returning to the step AB-3;
and step AB-5, controlling the auxiliary radio frequency read-write antenna to stop continuously transmitting the radio frequency signal, and entering the step B.
3. A radio frequency signal tamper-resistant reading method according to claim 1, wherein: in the step B, the time length of the interference radio frequency signal transmitted by the auxiliary radio frequency read-write antenna is less than the time length of any type of radio frequency signal.
4. A system for implementing a method for reading a radio frequency signal according to any one of claims 1 to 3, wherein: based on the main radio frequency read-write antenna and the auxiliary radio frequency read-write antenna, the antenna comprises a coupler and a radio frequency demodulation circuit; the main radio frequency read-write antenna comprises a main radio frequency reader-writer, a coupler and a main radio frequency antenna which are sequentially connected in series, and the auxiliary radio frequency read-write antenna comprises an auxiliary radio frequency reader-writer and an auxiliary radio frequency antenna which are connected with each other; the coupler is connected with the radio frequency demodulation circuit, and the radio frequency demodulation circuit is connected with the auxiliary radio frequency reader-writer;
the transmitting end of the main radio frequency antenna faces the target radio frequency tag, the transmitting end of the auxiliary radio frequency antenna faces other radio frequency tags, the distance between the target radio frequency tag and the main radio frequency antenna is smaller than the distance between the target radio frequency tag and the auxiliary radio frequency antenna, and the distance between the other radio frequency tags and the auxiliary radio frequency antenna is smaller than the distance between the other radio frequency tags and the main radio frequency antenna;
the main radio frequency reader generates radio frequency signals and sends the radio frequency signals to the connected coupler, the coupler divides the received radio frequency signals into two paths, one path of the radio frequency signals is continuously sent to the main radio frequency antenna to realize outward emission, the other path of the radio frequency signals is sent to the radio frequency demodulation circuit, the radio frequency demodulation circuit carries out detection analysis on the received radio frequency signals, the radio frequency demodulation circuit triggers the auxiliary radio frequency reader to generate radio frequency signals, and the auxiliary radio frequency antenna realizes outward emission.
5. The system of claim 4, wherein the radio frequency signal read-through preventing method comprises: the radio frequency demodulation circuit executes the radio frequency signal anti-fleeing reading method to realize the communication between the main radio frequency reading-writing antenna and the target radio frequency label.
6. Use of a system for implementing a method for reading a radio frequency signal according to any one of claims 4 to 5, characterized in that: the antenna is applied to an article conveyor belt system and comprises at least one main radio frequency read-write antenna and at least one auxiliary radio frequency read-write antenna; each article conveyed in the article conveyor belt system is respectively provided with a radio frequency tag; each main radio frequency read-write antenna is arranged on two sides of the conveyor belt corresponding to the preset radio frequency detection position, and the transmitting end of each main radio frequency read-write antenna points to the conveyor belt at the preset radio frequency detection position; each auxiliary radio frequency read-write antenna is positioned at one side of a preset radio frequency detection position facing the conveying direction of the conveying belt, each auxiliary radio frequency read-write antenna is respectively positioned at two sides of the conveying belt at the position, and the transmitting end of each auxiliary radio frequency read-write antenna points to the surface of the conveying belt in the direction facing the conveying direction of the conveying belt;
when the conveyed article is conveyed to the surface area of the conveying belt, which is pointed by the transmitting end of each auxiliary radio frequency read-write antenna, along with the conveying belt, the radio frequency tags on the article form radio frequency tags; when the conveyed article is conveyed to a preset radio frequency detection position along with the conveyor belt, the radio frequency tag on the article forms a target radio frequency tag; the radio frequency demodulation circuit executes the radio frequency signal anti-fleeing reading method to realize the communication between the main radio frequency reading-writing antenna and the target radio frequency label.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210155959.7A CN115270830A (en) | 2022-02-21 | 2022-02-21 | Anti-read-fleeing reading method and system for radio frequency signals and application |
| PCT/CN2023/076156 WO2023155801A1 (en) | 2022-02-21 | 2023-02-15 | Anti-channeling reading method and system for radio-frequency signals, and application of system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210155959.7A CN115270830A (en) | 2022-02-21 | 2022-02-21 | Anti-read-fleeing reading method and system for radio frequency signals and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115270830A true CN115270830A (en) | 2022-11-01 |
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| CN202210155959.7A Pending CN115270830A (en) | 2022-02-21 | 2022-02-21 | Anti-read-fleeing reading method and system for radio frequency signals and application |
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| CN (1) | CN115270830A (en) |
| WO (1) | WO2023155801A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023155801A1 (en) * | 2022-02-21 | 2023-08-24 | 上海英内物联网科技股份有限公司 | Anti-channeling reading method and system for radio-frequency signals, and application of system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7088248B2 (en) * | 2004-03-24 | 2006-08-08 | Avery Dennison Corporation | System and method for selectively reading RFID devices |
| CN108595996B (en) * | 2018-06-11 | 2023-07-07 | 上海双十信息科技有限公司 | Anti-serial-reading ultrahigh-frequency RFID system and method based on wireless signal interference technology |
| CN111292532A (en) * | 2020-02-07 | 2020-06-16 | 北京易路行技术有限公司 | Device, communication system and method for detecting vehicle-mounted label on expressway |
| CN115270830A (en) * | 2022-02-21 | 2022-11-01 | 上海英内物联网科技股份有限公司 | Anti-read-fleeing reading method and system for radio frequency signals and application |
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- 2022-02-21 CN CN202210155959.7A patent/CN115270830A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023155801A1 (en) * | 2022-02-21 | 2023-08-24 | 上海英内物联网科技股份有限公司 | Anti-channeling reading method and system for radio-frequency signals, and application of system |
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| Publication number | Publication date |
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| WO2023155801A1 (en) | 2023-08-24 |
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