UHF intelligent logistics tracking electronic tag system
By monitoring and analyzing tag identification conflicts in the UHF intelligent logistics tracking electronic tag system in real time, and using distributed backup readers, changing spreading codes and enabling different frequency channels, the problem of tag identification conflicts is solved, and the system's usage effect and promotion situation is improved.
Patent Information
- Application Number
- CN202510241032.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-06-06
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the UHF intelligent logistics tracking electronic tag system, when multiple tags are within the recognition range of the reader at the same time, tag identification conflicts are prone to occur, resulting in mutual interference of signals, and some tags cannot be correctly identified, affecting logistics tracking and management.
Through the signal processing module, processing gain module, conflict detection module, conflict analysis module and conflict regulation module, the tag identification conflict status is monitored in real time, the processing gain value and conflict deviation value are calculated, the different types of tag identification conflicts are determined, and the corresponding processing is carried out based on the conflict analysis results, including starting a distributed backup reader, replacing the spread spectrum code and enabling different frequency channels.
It effectively reduces the adverse impact in logistics tracking and management, and improves the use effect and promotion of UHF intelligent logistics tracking electronic tag system.
Smart Images
Figure CN120106112A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of electronic label systems, and in particular to a UHF intelligent logistics tracking electronic label system. Background Art
[0002] The UHF (ultra-high frequency) intelligent logistics tracking electronic tag system is mainly composed of three parts: electronic tags, readers (readers and writers) and data management systems. Among them, UHF electronic tags can be made using card making technology to reduce the cost of electronic tag production and improve efficiency. When the goods with electronic tags enter the working range of the reader, the reader will emit radio waves to activate the electronic tags. After receiving the radio waves, the electronic tags will reflect the stored information back to the reader through the radio waves. After receiving the reflected signal, the reader will decode it and pass it to the data management system for processing. UHF RFID electronic tags usually have a long service life and can be repeatedly erased and written, which reduces the cost of use.
[0003] In actual applications, when multiple tags are within the reader's identification range at the same time, tag identification conflicts may occur. This conflict is usually caused by multiple tags responding to the reader's query instructions at the same time, resulting in mutual interference of signals, which causes some tags to be unable to be correctly identified. This will have an adverse impact on logistics tracking and management, and seriously affect the use effect and promotion of the UHF intelligent logistics tracking electronic tag system. Summary of the invention
[0004] In view of the above situation, the present invention can monitor the tag identification conflict status in real time, and determine the different types of tag identification conflicts based on the multiple parameters of monitoring tag identification conflicts, and make corresponding processing in time to reduce the adverse effects of logistics tracking and management.
[0005] The technical solution is a UHF intelligent logistics tracking electronic tag system, including a signal processing module, a processing gain module, a conflict detection module and a conflict analysis module, a conflict control module, and a database. The signal processing module analyzes the signal reflected by the reader in the electronic tag system, calculates and extracts the spread spectrum code rate RC, data bit rate RB, channel utilization rate X, query response rate W, and error rate C in the signal; The processing gain module calculates the processing gain value PG, PG = 10Lg (RC / RB), and extracts the parameter range NPG~MPG corresponding to the processing gain value PG in the database, and then calculates the excess value PG1 of the processing gain value relative to the PG parameter range NPG~MPG, and finally calculates the deviation rate PG2 of the processing gain value, PG2=PG1 / [(NPG+MPG) / 2]; The conflict detection module extracts the corresponding channel utilization threshold X1, query response rate threshold W1, and error rate threshold C1 from the database, and then calculates the deviation rate X2 of the channel utilization, X2=(X1-X) / X1; Deviation rate of query response rate W2, W2 = (W1-W) / W1; The deviation rate of error rate is C2, C2= (C-C1) / C1; Finally, the conflict deviation value Q is calculated, Q=X2×0.3+W2×0.4+C2×0.3+ζ, where ζ represents the calibration value of the conflict deviation; The conflict analysis module calculates the conflict value according to the deviation rate of the processing gain value and the conflict deviation value, then compares the conflict value, the deviation rate of the processing gain value and the conflict deviation value with the corresponding threshold value, and finally sends the compared conflict analysis result to the conflict control module; The conflict control module performs corresponding processing operations according to the conflict analysis results.
[0006] Furthermore, the conflict analysis module calculates the conflict value Y, Y=PG2×0.3+Q×0.7+ε, where ε represents the calibration value of the conflict, and Y greater than 0.2 indicates that a tag recognition conflict occurs, otherwise, it is normal; If PG2 is greater than 0.1, it means that the signal transmission is disturbed, otherwise, it is normal; Under the premise that both Y and PG2 are normal, the conflict deviation value Q is greater than 0.3, indicating that the tag recognition has a slight conflict. Otherwise, it is normal.
[0007] Furthermore, when the conflict control module receives a tag identification conflict, it starts the distributed standby reader / writer in the reader to perform distributed processing on the tag signal; When the signal transmission is interfered, the spread spectrum code is replaced, the reflected signal is spread spectrum processed, and the processing gain value PG is adjusted until it is normal; When there is a slight conflict in tag identification, multiple frequency channels are enabled to distinguish different electronic tags. The reader sends query commands at different frequencies, and the electronic tags reply with data after receiving the commands at the corresponding frequencies.
[0008] Furthermore, the conflict analysis module processes the conflict value Y and the deviation rate PG2 with a higher priority than the conflict deviation value Q. Only when both Y and PG2 are normal will the conflict deviation value Q be further judged. The conflict value Y and the deviation rate PG2 have the same priority.
[0009] Furthermore, when the processing gain value PG is within the parameter range NPG-MPG, the excess value PG1 is 0, and the deviation rate PG2 of the processing gain value is 0.
[0010] Furthermore, channel utilization refers to the proportion of time that the channel between the reader and the logistics tracking electronic tag is effectively used within a certain period of time; The query response rate indicates the rate at which the electronic tag responds to the reader's query command; The error rate indicates the error rate of the reader reading the electronic tag.
[0011] Furthermore, when the conflict control module receives normal signals, the distributed standby reader / writer does not work, and when working normally, one frequency channel can meet the demand.
[0012] Due to the adoption of the above technical solution, the present invention has the following advantages compared with the prior art: 1. By calculating the processing gain value and the conflict deviation value, and calculating the conflict value according to the deviation rate of the processing gain value and the conflict deviation value, the different types of specific tag identification conflicts are obtained, and corresponding selection operations are made for three different control methods according to the conflict analysis results. By starting the distributed standby reader in the reader, replacing the spread spectrum code, and enabling three different control methods to send query commands at different frequencies, the adverse effects of logistics tracking and management are reduced, and the use effect and promotion effect of the UHF intelligent logistics tracking electronic tag system are improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a module diagram of a UHF intelligent logistics tracking electronic tag system of the present invention.
[0014] Figure 2 This is a module flow chart of a UHF intelligent logistics tracking electronic tag system of the present invention. DETAILED DESCRIPTION
[0015] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figure 1 to Figure 2 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.
[0016] In order to monitor the tag identification conflict status in real time, and determine the different types of tag identification conflicts according to the multiple parameters of monitoring tag identification conflicts, and make corresponding treatments in time to reduce the adverse effects of logistics tracking and management, the system includes a signal processing module, a processing gain module, a conflict detection module and a conflict analysis module, a conflict control module, and a database. The signal processing module analyzes the signal reflected by the reader in the electronic tag system, calculates and extracts the spread spectrum code rate RC, the data bit rate RB, the channel utilization rate X, the query response rate W, and the error rate C in the signal; The processing gain module calculates the processing gain value PG, PG = 10Lg (RC / RB), and extracts the parameter range NPG~MPG corresponding to the processing gain value PG in the database, and then calculates the excess value PG1 of the processing gain value relative to the PG parameter range NPG~MPG, and finally calculates the deviation rate PG2 of the processing gain value, PG2=PG1 / [(NPG+MPG) / 2]; The conflict detection module extracts the corresponding channel utilization threshold X1, query response rate threshold W1, and error rate threshold C1 from the database, and then calculates the deviation rate X2 of the channel utilization, X2=(X1-X) / X1; Deviation rate of query response rate W2, W2 = (W1-W) / W1; The deviation rate of error rate is C2, C2= (C-C1) / C1; Finally, the conflict deviation value Q is calculated, Q=X2×0.3+W2×0.4+C2×0.3+ζ, where ζ represents the calibration value of the conflict deviation; The conflict analysis module calculates the conflict value according to the deviation rate of the processing gain value and the conflict deviation value, then compares the conflict value, the deviation rate of the processing gain value and the conflict deviation value with the corresponding threshold value, and finally sends the compared conflict analysis result to the conflict control module; The conflict control module performs corresponding processing operations according to the conflict analysis results.
[0017] Furthermore, the conflict analysis module calculates the conflict value Y, Y=PG2×0.3+Q×0.7+ε, where ε represents the calibration value of the conflict, and Y greater than 0.2 indicates that a tag recognition conflict occurs, otherwise, it is normal; If PG2 is greater than 0.1, it means that the signal transmission is disturbed, otherwise, it is normal; Under the premise that both Y and PG2 are normal, the conflict deviation value Q is greater than 0.3, indicating that the tag recognition has a slight conflict. Otherwise, it is normal.
[0018] Furthermore, when the conflict control module receives a tag identification conflict, it starts the distributed standby reader / writer in the reader to perform distributed processing on the tag signal; When the signal transmission is interfered, the spread spectrum code is replaced, the reflected signal is spread spectrum processed, and the processing gain value PG is adjusted until it is normal; When there is a slight conflict in tag identification, multiple frequency channels are enabled to distinguish different electronic tags. The reader sends query commands at different frequencies, and the electronic tags reply with data after receiving the commands at the corresponding frequencies.
[0019] Furthermore, the conflict analysis module processes the conflict value Y and the deviation rate PG2 with a higher priority than the conflict deviation value Q. Only when both Y and PG2 are normal will the conflict deviation value Q be further judged. The conflict value Y and the deviation rate PG2 have the same priority.
[0020] Furthermore, when the processing gain value PG is within the parameter range NPG-MPG, the excess value PG1 is 0, and the deviation rate PG2 of the processing gain value is 0.
[0021] Furthermore, channel utilization refers to the proportion of time that the channel between the reader and the logistics tracking electronic tag is effectively used within a certain period of time; The query response rate indicates the rate at which the electronic tag responds to the reader's query command; The error rate indicates the error rate of the reader reading the electronic tag.
[0022] Furthermore, when the conflict control module receives normal signals, the distributed standby reader / writer does not work, and when working normally, one frequency channel can meet the demand.
[0023] When the present invention is used specifically, based on the prior art, the signal processing module analyzes the signal reflected by the reader in the electronic tag system, calculates and extracts the spread spectrum code rate RC, data bit rate RB, channel utilization rate X, query response rate W, and error rate C in the signal; The processing gain module calculates the processing gain value PG, PG = 10Lg (RC / RB), and extracts the parameter range NPG~MPG corresponding to the processing gain value PG in the database, and then calculates the excess value PG1 of the processing gain value relative to the PG parameter range NPG~MPG, and finally calculates the deviation rate PG2 of the processing gain value, PG2=PG1 / [(NPG+MPG) / 2]; The conflict detection module extracts the corresponding channel utilization threshold X1, query response rate threshold W1, and error rate threshold C1 from the database, and then calculates the deviation rate X2 of the channel utilization, X2=(X1-X) / X1; Deviation rate of query response rate W2, W2 = (W1-W) / W1; The deviation rate of error rate is C2, C2= (C-C1) / C1; Finally, the conflict deviation value Q is calculated, Q=X2×0.3+W2×0.4+C2×0.3+ζ, where ζ represents the calibration value of the conflict deviation.
[0024] The conflict analysis module calculates the conflict value Y, Y=PG2×0.3+Q×0.7+ε, where ε represents the calibration value of the conflict, and Y greater than 0.2 indicates that a tag recognition conflict occurs, otherwise it indicates normal; If PG2 is greater than 0.1, it means that the signal transmission is disturbed, otherwise, it is normal; Under the premise that both Y and PG2 are normal, the conflict deviation value Q is greater than 0.3, indicating that the tag recognition has a slight conflict. Otherwise, it is normal.
[0025] When the conflict control module receives a tag identification conflict, it starts the distributed standby reader / writer in the reader to perform distributed processing on the tag signal; When the signal transmission is interfered, the spread spectrum code is replaced, the reflected signal is spread spectrum processed, and the processing gain value PG is adjusted until it is normal; When there is a slight conflict in tag identification, multiple frequency channels are enabled to distinguish different electronic tags. The reader sends query commands at different frequencies, and the electronic tag replies with data after receiving the command of the corresponding frequency. The above method can monitor the tag identification conflict status in real time, and determine the different types of tag identification conflicts based on the multiple parameters of monitoring tag identification conflicts, and make corresponding processing in time to reduce the adverse effects on logistics tracking and management.
[0026] The above is a further detailed description of the present invention in combination with a specific implementation method, and it cannot be determined that the specific implementation of the present invention is limited to this; for technical personnel in the technical field to which the present invention belongs and related technical fields, based on the technical solution of the present invention, the expansion and replacement of operating methods and data should all fall within the protection scope of the present invention.
Claims
1. A UHF intelligent logistics tracking electronic label system, characterized in that: It includes a signal processing module, a processing gain module, a conflict detection module and a conflict analysis module, a conflict control module, and a database. The signal processing module analyzes the signal reflected by the reader in the electronic tag system, calculates and extracts the spread spectrum code rate RC, the data bit rate RB, the channel utilization rate X, the query response rate W, and the error rate C in the signal; The processing gain module calculates the processing gain value PG, PG = 10Lg (RC / RB), and extracts the parameter range NPG~MPG corresponding to the processing gain value PG in the database, and then calculates the excess value PG1 of the processing gain value relative to the PG parameter range NPG~MPG, and finally calculates the deviation rate PG2 of the processing gain value, PG2=PG1 / [(NPG+MPG) / 2]; The conflict detection module extracts the corresponding channel utilization threshold X1, query response rate threshold W1, and error rate threshold C1 from the database, and then calculates the deviation rate X2 of the channel utilization, X2=(X1-X) / X1; Deviation rate of query response rate W2, W2 = (W1-W) / W1; The deviation rate of error rate is C2, C2= (C-C1) / C1; Finally, the conflict deviation value Q is calculated, Q=X2×0.3+W2×0.4+C2×0.3+ζ, where ζ represents the calibration value of the conflict deviation; The conflict analysis module calculates the conflict value according to the deviation rate of the processing gain value and the conflict deviation value, then compares the conflict value, the deviation rate of the processing gain value and the conflict deviation value with the corresponding threshold value, and finally sends the compared conflict analysis result to the conflict control module; The conflict control module performs corresponding processing operations according to the conflict analysis results.
2. According to claim 1, a UHF intelligent logistics tracking electronic label system is characterized in that: The conflict analysis module calculates the conflict value Y, Y=PG2×0.3+Q×0.7+ε, where ε represents the calibration value of the conflict, and Y greater than 0.2 indicates that a tag recognition conflict occurs, otherwise it indicates normal; If PG2 is greater than 0.1, it means that the signal transmission is disturbed, otherwise, it is normal; Under the premise that both Y and PG2 are normal, the conflict deviation value Q is greater than 0.3, indicating that the tag recognition has a slight conflict. Otherwise, it is normal.
3. According to claim 2, a UHF intelligent logistics tracking electronic label system is characterized in that: When the conflict control module receives a tag identification conflict, it starts the distributed standby reader / writer in the reader to perform distributed processing on the tag signal; When the signal transmission is interfered, the spread spectrum code is replaced, the reflected signal is spread spectrum processed, and the processing gain value PG is adjusted until it is normal; When there is a slight conflict in tag identification, multiple frequency channels are enabled to distinguish different electronic tags. The reader sends query commands at different frequencies, and the electronic tags reply with data after receiving the commands at the corresponding frequencies.
4. According to claim 1, a UHF intelligent logistics tracking electronic label system is characterized in that: The conflict analysis module processes the conflict value Y and the deviation rate PG2 with higher priority than the conflict deviation value Q. Only when both Y and PG2 are normal will the conflict deviation value Q be further judged. The conflict value Y and the deviation rate PG2 have the same priority.
5. According to claim 1, a UHF intelligent logistics tracking electronic label system is characterized in that: When the processing gain value PG is within the parameter range NPG~MPG, the excess value PG1 is 0 and the deviation rate PG2 of the processing gain value is 0.
6. According to claim 1, a UHF intelligent logistics tracking electronic label system is characterized in that: Channel utilization refers to the proportion of time that the channel between the reader and the logistics tracking electronic tag is effectively used within a certain period of time; The query response rate indicates the rate at which the electronic tag responds to the reader's query command; The error rate indicates the error rate of the reader reading the electronic tag.
7. According to claim 3, a UHF intelligent logistics tracking electronic label system is characterized in that: When the conflict control module receives normal signals, the distributed standby reader does not work. When the conflict control module works normally, one frequency channel can meet the demand.