Mobile phone information detection and management and control system based on RFID technology

Abstract

The invention relates to the technical field of mobile phone detection, in particular to a mobile phone information detection and management and control system based on the RFID technology. According to the method, the RFID reader-writers which can be arranged and installed are calculated in advance, the accuracy of operating a detection mobile phone after installation is ensured, meanwhile, the RFID reader-writers are further subjected to efficient arrangement and installation planning by combining the number of the sub-areas needing to be installed and the introduction use time, and meanwhile, in the process, the use end time of the sub-areas is considered, so that the installation accuracy of the mobile phone is improved. And finding out the idle RFID reader-writer and re-arranging and planning the other sub-regions, thereby realizing reasonable control of the equipment requirements and resources of the RFID reader-writer. And during resource allocation, synchronously considering the operation time of arranging, installing and planning the RFID reader-writers, and further establishing the planning allocation correctness of the RFID reader-writers in the region.

Description

Technical Field

[0001] This invention relates to the field of mobile phone detection technology, and more specifically to a mobile phone information detection and control system based on RFID technology. Background Technology

[0002] When RFID information detection systems are used in indoor environments such as schools and corporate parks, they generally suffer from problems such as arbitrary deployment of readers, limited equipment status assessment, and low efficiency in resource scheduling.

[0003] Traditional methods typically deploy devices based on signal strength or read success rate, which fails to reflect changes in the reader's performance due to malfunctions or interference over long-term use. This can lead to decreased detection accuracy during subsequent use.

[0004] Furthermore, if the RFID reader malfunctions during the detection process, it could further disrupt the current indoor tasks or operations, potentially leading to significant information and resource leaks and posing a dual risk to information and property security. Moreover, without an emergency plan, it is usually impossible to quickly handle malfunctions during use; even with an emergency plan, it will increase the cost of human and material resources.

[0005] Furthermore, the current deployment of readers indoors is mostly static, without considering the time constraints such as the usage period of the room. This makes it impossible to dynamically schedule and plan the utilization of different rooms with limited RFID reader equipment, which easily leads to resource waste. Summary of the Invention

[0006] To address the aforementioned shortcomings of existing technologies, this invention provides a mobile phone information detection and control system based on RFID technology, which can effectively solve the problems in existing technologies where there is no dynamic deployment planning mechanism for readers, making it difficult to achieve screening, precise deployment, and resource scheduling and utilization.

[0007] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a mobile phone information detection and control system based on RFID technology, comprising at least: The reader status analysis module calculates the RFID security index of the RFID reader and selects the RFID reader based on the RFID security index. The RFID security index is constructed based on stability coefficient, identification accuracy coefficient, anti-interference coefficient, fault anomaly coefficient, and shape coefficient. The reader deployment planning module obtains the estimated time used for each sub-area and constructs a sequence group; Based on the sequence group, RFID readers are allocated and deployed to sub-regions in sequence. If it is not possible to allocate and deploy corresponding RFID readers to all sub-regions: Obtain the remaining sub-areas that have not been allocated or deployed with RFID readers, and establish the undeployed sub-areas and deployed sub-areas; Obtain the estimated end time of deploying the sub-region: If there is an expected end time earlier than the expected time of the undeployed sub-area, obtain the time difference, and based on the time difference and the deployment operation time, determine whether to allocate and deploy the RFID readers in the deployed sub-area to the undeployed sub-area. The reader detection module detects mobile phone information within a sub-area and determines whether the mobile phone is allowed to exist within the sub-area.

[0008] Furthermore, the stability coefficient is determined based on the average signal strength and average received signal strength of the reader during the test; the identification accuracy coefficient is determined based on the number of tags successfully read by the reader during the test and the total number of tags in the test area; and the anti-interference coefficient is determined based on the ratio of the identification accuracy coefficient after interference is applied to the identification accuracy coefficient without interference.

[0009] The method for constructing the fault anomaly coefficient is as follows: Obtain the RFID reader's failure frequency, average fault repair time, and usage duration; The three factors are normalized and dimensionless, and then assigned corresponding weight coefficients. A comprehensive fault anomaly coefficient is calculated by weighted summation.

[0010] Furthermore, the method for constructing the shape coefficient is as follows: Collect defects on the surface of the RFID reader / writer; Calculate the defect area and depth for each defect point; The total defect area and total defect depth of the RFID reader are calculated separately. Combined with the number of defect points, the three are normalized and dimensionless. Each is assigned a corresponding weight coefficient, and the total shape coefficient is calculated by weighting.

[0011] Furthermore, the types of interference applied include: Wireless communication interference; Reflection interference; Electromagnetic noise interference; Artificial obstruction and interference.

[0012] Furthermore, the method for determining whether to deploy the RFID reader to the undeployed sub-areas is as follows: Obtain the estimated end time of the deployed sub-region; if there is an estimated end time earlier than the estimated time of the undeployed sub-region. Obtain the time difference between the two. If the time difference is not less than the deployment operation time: Obtain the deployment sub-area for calculating the time difference. When the deployment sub-area reaches the expected end time, remove the RFID readers deployed in it and distribute RFID readers to the undeployed sub-areas during the deployment operation time.

[0013] Furthermore, the method for constructing the deployment operation time is as follows: Acquire the travel time loss of personnel from the deployed sub-area to the non-deployed sub-area; Based on the number and location of RFID readers deployed in each sub-area, the historical fixed time consumption is matched. The sum of fixed time consumption and travel time loss constitutes the deployment operation time.

[0014] Furthermore, the method for determining the number of RFID readers / writers within the sub-region is as follows: Obtain the 3D structural model and area of ​​the sub-region where RFID readers need to be deployed; Identify the matching historical region in the historical database; Obtain the number and location of RFID readers / writers deployed in this historical area; The corresponding number of RFID readers are deployed simultaneously in the sub-regions.

[0015] Furthermore, the deployment of the RFID readers also includes: Obtain the current cumulative number of times the RFID reader has been disassembled and reassembled, as well as the maximum allowed number of times it can be disassembled and reassembled, and calculate the equipment lifespan coefficient; The deployment and scheduling of RFID readers are determined based on the equipment lifespan coefficient.

[0016] A computer device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the system.

[0017] The technical solution provided by this invention has the following advantages compared with the known prior art: By pre-calculating the number of RFID readers that can be deployed and installed, the accuracy of mobile phone detection after installation is ensured. At the same time, the number of RFID readers to be installed in sub-areas and the time of introduction of use are considered to further plan the efficient deployment and installation of RFID readers. In this process, the end time of use in sub-areas is considered to find idle RFID readers and re-plan their deployment in other sub-areas, so as to achieve reasonable control of RFID reader equipment demand and its resources.

[0018] When allocating resources, the operation time for deploying and installing RFID readers should be considered simultaneously to further ensure the accuracy of the planned allocation of RFID readers within the region. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0020] Figure 1 This is a schematic diagram of the mobile phone information detection and control system of the present invention. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] The present invention will be further described below with reference to embodiments.

[0023] Example 1 (see Figure 1 A mobile phone information detection and control system based on RFID technology includes at least: The reader status analysis module calculates the RFID security index of each stored RFID reader when deploying RFID readers in the sub-area (room) to be detected. The module then selects the RFID reader for deployment based on the RFID security index, which is established in the following way: Assess the stability coefficient: in, Represents the stability coefficient. This represents the average signal strength of the i-th reader / writer across all N tests, reflecting the overall transmit power level of that reader / writer. This represents the average received signal strength of the i-th reader in the nth test, which is the average read signal strength of the standard tag within each test run. It should be noted that in this embodiment, N needs to be greater than 30 to ensure statistical significance. If the reading time is approximately 1 hour, it indicates that the reader / writer is highly stable.

[0024] Evaluation of identification accuracy coefficient: in, Indicates the recognition accuracy coefficient. This represents the number of tags successfully read by the i-th reader in the nth test. This indicates the total number of actual labels within the test area. The larger the value, the higher the recognition accuracy.

[0025] Evaluation of interference immunity coefficient: in, Indicates the anti-interference coefficient. This represents the recognition accuracy coefficient after adding interference. The larger the value, the stronger the anti-interference ability.

[0026] This embodiment is applied to enterprise parks or schools. The type of interference applied can be determined based on the application scenario. Wireless communication interference: Multiple wireless routers or Bluetooth speakers were simultaneously turned on in the test area, and the routers were set to continuously transmit high-bandwidth data, such as file uploads, to maintain a certain power of radiation. The power is controlled between -50dBm and -40dBm. If co-frequency interference is used, such as the 915MHz RFID band, a signal generator can be used to transmit a continuous wave at the same frequency, starting with a power of -60dBm and gradually increasing to -30dBm.

[0027] Reflection interference: Different reflective materials, such as metal plates (aluminum plates, iron plates), glass plates, or furniture, are placed between the reader and the tag. By changing the distance and angle between the reflective material and the reader antenna, different reflection paths are formed.

[0028] Electromagnetic noise interference: White noise is generated using a signal generator, with a frequency band covering ±5MHz of the RFID reader's operating frequency. The output power is -60dBm to 30dBm, and it is radiated through a coupling antenna at a distance of 1 to 2 meters from the reader. You can also turn on high-power motors and other equipment in the test area to simulate mixed power frequency and high frequency interference.

[0029] Artificial obstruction and interference: People can walk between the tag and the RFID reader, or absorbent materials such as textiles, water tanks, or mannequins can be placed between them.

[0030] In summary, the anti-interference coefficient is collected after applying the appropriate interference. If at least two types of interference are used, the anti-interference coefficients calculated separately for each type or type can be averaged to output the final anti-interference coefficient.

[0031] Evaluate the fault anomaly coefficient: The fault frequency, average fault repair time, and usage time of the RFID reader are obtained; these three are normalized (e.g., min-max) and dimensionless, and then assigned corresponding weight coefficients. A comprehensive fault anomaly coefficient is calculated by weighted summation. The assigned weight coefficients are empirical preset values. Generally, the smaller the fault anomaly coefficient, the higher the reliability. It should be noted that, due to the various environments in which RFID readers may be used and the influence of their actual lifespan, the handling of RFID readers after a failure is an important reference indicator, reflecting the probability or degree of abnormal risk of subsequent failures.

[0032] Evaluation of shape factor: Defect points on the surface of the RFID reader are collected, such as points that have been bumped or damaged. The defect area and depth of each defect point are counted. The total defect area and total defect depth of the RFID reader are counted separately. Combined with the number of defect points, the three are normalized and dimensionless, and corresponding weight coefficients are assigned to them. The total shape coefficient is calculated by weighting. It should be noted that the larger the shape coefficient, the greater the risk of using the current RFID reader.

[0033] It should be noted that, currently, RFID readers are typically installed directly on walls or other objects for ease of use and to reduce indoor space occupation. Therefore, after installation, various situations inevitably lead to scratches and collisions with the RFID reader. For example, in school classrooms (and similarly in corporate parks), collisions may occur while cleaning corners of classroom walls, moving large desks or cabinets, or installing various electronic devices. These collisions will inevitably affect the RFID reader.

[0034] After the above coefficients are normalized and dimensionless, they can be assigned corresponding weights (preset values), and the weighted summation can be used to calculate the current RFID security index of the RFID reader.

[0035] The RFID security index is compared with the corresponding threshold. The RFID readers with security indices greater than the threshold are stored in the inventory center to form a candidate reader list. Then, RFID readers are selected from the candidate reader list and deployed in the sub-area for mobile phone information detection. This ensures that subsequent mobile phone information detection by RFID readers is accurate and reliable, thus improving the accuracy of mobile phone information detection.

[0036] In one embodiment, when calculating the weighted RFID security index, the stability coefficient, fault anomaly coefficient, and shape coefficient can be taken as reciprocals to calculate the final RFID security index, so as to better reflect the status of the RFID reader / writer.

[0037] The reader deployment planning module acquires the 3D structural model (including fixed tables and chairs, equipment with metal structures, etc.) and area of ​​all sub-areas (rooms) where RFID readers need to be deployed. It identifies matching (identical) historical areas in the historical database, obtains the number and location of RFID readers set up in those historical areas, and synchronously deploys the corresponding number of RFID readers in the sub-areas to detect mobile phone information within the sub-areas. The number of RFID readers deployed in the same historical areas as the sub-areas is used to determine the number of RFID readers deployed in the sub-areas, thus quickly determining the number of RFID readers deployed in the sub-areas with high efficiency. Therefore, based on the required quantity for each sub-area, the required number of RFID readers to be deployed in all sub-areas can be calculated, which will be used for subsequent RFID reader deployment planning. The specific planning method is as follows: Obtain the estimated time required to put each sub-region into use; Sort the sequences from earliest to latest according to the expected time, and construct sequence groups; The RFID readers in the candidate reader list are allocated and deployed to the sub-areas in sequence according to the order in the sequence group. If the required number of RFID readers exceeds the number in the candidate reader list, meaning it is impossible to allocate and deploy RFID readers to all sub-areas: The deployment standards are allocated sequentially according to the order in the sequence group, and the remaining unallocated sub-areas and RFID reader / writer deployment areas are obtained. The detection area where no RFID readers have been allocated and deployed is recorded as the undeployed sub-area, and the detection area where RFID readers have been allocated and deployed is recorded as the deployed sub-area. Get the estimated end time of the deployed sub-region. If there is an estimated end time that is earlier than the estimated time of the undeployed sub-region (start using). The time difference between the two is obtained. If the time difference is not less than the deployment operation time (the time taken to manually deploy RFID readers), the deployment sub-area used to calculate the time difference is obtained. When it reaches the expected end time, the RFID readers deployed in it are removed and RFID readers are allocated and deployed to the non-deployed sub-area during the deployment operation time. This realizes the planning and allocation of equipment resources and avoids useless resource consumption.

[0038] It should also be noted that, according to the sequence group order, the undeployed sub-areas are allocated and RFID readers are deployed one by one.

[0039] If the time difference is less than the deployment operation time, meaning there is currently no RFID reader / writer that can be allocated and deployed to the undeployed sub-area before the estimated time of the undeployed sub-area after the estimated end time of the deployment sub-area, an early warning message will be generated and output to the control center, indicating that there is an undeployed sub-area where the RFID reader / writer cannot be used normally, prompting control personnel to take emergency measures.

[0040] It should also be noted that in this embodiment, all detection areas are different rooms within the same area (such as a park or school). Therefore, when defining the deployment operation time, the travel time loss for personnel traveling from the deployed sub-area to the non-deployed sub-area also needs to be considered. In other words, the deployment operation time is defined as the sum of the fixed time for deploying RFID readers (based on the number of RFID readers to be deployed in each room and the historical fixed time matched with the deployment location) and the travel time loss.

[0041] The calculation of travel time loss and personnel deployment is based on different travel speeds. When bicycles or electric vehicles (electric vehicles are usually deployed in the park to assist personnel in their work) travel in the park, a fixed travel speed is usually preset. If personnel are on foot, the value is taken based on the historical average walking speed. Thus, the travel time loss can be defined based on the ratio of distance to speed between deployed and non-deployed sub-areas.

[0042] It should be noted that in this embodiment, a specified threshold is set for the number of times the RFID reader can be installed and removed. Therefore, if it is necessary to remove the deployed RFID reader and distribute RFID readers to undeployed sub-areas during the deployment operation time, the following steps also need to be performed: Obtain the current cumulative number of times the RFID reader / writer has been disassembled and reassembled, as well as the maximum allowed number of times it can be disassembled and reassembled, and calculate the device lifespan coefficient. : in, Indicates the total number of times the parts have been disassembled and reassembled. Indicates the maximum number of times disassembly and assembly are allowed; Equipment life coefficient If the value is less than the threshold, it indicates that the current RFID reader has low security after being disassembled and reassembled. Therefore, the disassembly, reassembly, and deployment scheduling of the RFID reader will not be performed, thus affecting the equipment lifespan coefficient. When the threshold is greater than 1, it means that the current RFID reader can be disassembled and participate in the deployment scheduling. In this way, the safety of idle and unused RFID readers can be ensured when they are allocated and deployed, and the allocation and deployment of RFID readers can be carried out safely.

[0043] Therefore, the technical solution in this embodiment can ensure that when RFID readers need to be installed in many sub-areas of the entire area, the number of RFID readers that can be deployed and installed can be calculated in advance, ensuring the accuracy of mobile phone detection after installation. At the same time, the number of RFID readers to be installed in the sub-areas and the time of introduction of use can be combined to further plan the efficient deployment and installation of RFID readers. In this process, the end time of use of the sub-areas is considered, idle RFID readers are found and re-deployed to other sub-areas, so as to achieve reasonable control of RFID reader equipment demand and its resources.

[0044] It is also worth noting that when allocating resources, the operation time for deploying and installing RFID readers should be considered simultaneously to further ensure the accuracy of the planned allocation of RFID readers within the region.

[0045] Once deployed, the RFID reader detection module generates electromagnetic signals of a specific frequency using its internal radio frequency module. These signals are then radiated into space via an antenna, creating an electromagnetic field that covers a sub-area. When a mobile phone with an RFID tag enters this sub-area, the tag's antenna senses energy from the external radio frequency field, activating and modulating its encoded information (such as a phone ID or unique serial number) into a return signal via backscattering. The reader's receiving antenna then captures this return signal and extracts the tag information using internal demodulation and protocol parsing circuitry. Subsequently, the system uploads the identified tag information to a management platform for comparison and analysis against a whitelist database to determine whether the mobile phone is permitted to exist within the current sub-area.

[0046] Finally, it also provides: A computer device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the system.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mobile phone information detection and control system based on RFID technology, characterized in that, include: The reader status analysis module calculates the RFID security index of the RFID reader and selects the appropriate RFID reader based on the RFID security index. The RFID security index is constructed based on stability coefficient, identification accuracy coefficient, anti-interference coefficient, fault anomaly coefficient, and shape coefficient. The reader deployment planning module obtains the estimated time used for each sub-area and constructs a sequence group; Based on the sequence group, RFID readers are allocated and deployed to sub-regions in sequence. If it is not possible to allocate and deploy corresponding RFID readers to all sub-regions: Obtain the remaining sub-areas that have not been allocated or deployed with RFID readers, and establish the undeployed sub-areas and deployed sub-areas; Obtain the estimated end time of deploying the sub-region: If there is an expected end time earlier than the expected time of the undeployed sub-area, obtain the time difference, and based on the time difference and the deployment operation time, determine whether to allocate and deploy the RFID readers in the deployed sub-area to the undeployed sub-area. The reader detection module detects mobile phone information within a sub-area and determines whether the mobile phone is allowed to exist within the sub-area.

2. The mobile phone information detection and control system according to claim 1, characterized in that, The stability coefficient is determined based on the average signal strength and average received signal strength of the reader during the test; the identification accuracy coefficient is determined based on the number of tags successfully read by the reader during the test and the total number of tags in the actual test area. The anti-interference coefficient is determined based on the ratio of the recognition accuracy coefficient after interference is applied to the recognition accuracy coefficient without interference.

3. The mobile phone information detection and control system according to claim 1, characterized in that, The method for constructing the fault anomaly coefficient is as follows: Obtain the RFID reader's failure frequency, average fault repair time, and usage duration; The three factors are normalized and dimensionless, and then assigned corresponding weight coefficients. A comprehensive fault anomaly coefficient is calculated by weighted summation.

4. The mobile phone information detection and control system according to claim 1, characterized in that, The method for constructing the shape coefficient is as follows: Collect defects on the surface of the RFID reader / writer; Calculate the defect area and depth for each defect point; The total defect area and total defect depth of the RFID reader are calculated separately. Combined with the number of defect points, the three are normalized and dimensionless. Each is assigned a corresponding weight coefficient, and the total shape coefficient is calculated by weighting.

5. The mobile phone information detection and control system according to claim 2, characterized in that, The types of interference applied include: Wireless communication interference; Reflection interference; Electromagnetic noise interference; Artificial obstruction and interference.

6. The mobile phone information detection and control system according to claim 1, characterized in that, The method for determining whether to allocate and deploy the RFID reader to the undeployed sub-areas is as follows: Obtain the estimated end time of the deployed sub-region; if there is an estimated end time earlier than the estimated time of the undeployed sub-region. Obtain the time difference between the two. If the time difference is not less than the deployment operation time: Obtain the deployment sub-area for calculating the time difference. When the deployment sub-area reaches the expected end time, remove the RFID readers deployed in it and distribute RFID readers to the undeployed sub-areas during the deployment operation time.

7. The mobile phone information detection and control system according to claim 6, characterized in that, The method for constructing the deployment operation time is as follows: Acquire the travel time loss of personnel from the deployed sub-area to the non-deployed sub-area; Based on the number and location of RFID readers deployed in each sub-area, the historical fixed time consumption is matched. The sum of fixed time consumption and travel time loss constitutes the deployment operation time.

8. The mobile phone information detection and control system according to claim 1, characterized in that, The method for determining the number of RFID readers / writers within the sub-region is as follows: Obtain the 3D structural model and area of ​​the sub-region where RFID readers need to be deployed; Identify the matching historical region in the historical database; Obtain the number and location of RFID readers / writers deployed in this historical area; The corresponding number of RFID readers are deployed simultaneously in the sub-regions.

9. The mobile phone information detection and control system according to claim 6, characterized in that, When distributing and deploying RFID readers, the following is also included: Obtain the current cumulative number of times the RFID reader has been disassembled and reassembled, as well as the maximum allowed number of times it can be disassembled and reassembled, and calculate the equipment lifespan coefficient; The deployment and scheduling of RFID readers are determined based on the equipment lifespan coefficient.

10. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the system according to any one of claims 1 to 9.

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