A method and system for detecting performance of an RF tag in a multipath channel environment

Abstract

The application relates to the technical field of RF tags, and provides an RF tag performance detection method and system in a multipath channel environment, which comprises the following steps: acquiring the signal power and noise power of initial detection points and terminal detection points of the RF tag in the multipath channel environment; calculating the signal attenuation and noise increase according to the signal power and noise power of the initial detection points and the terminal detection points; and calculating the ratio of the signal attenuation and the noise increase, and taking the ratio as the performance index of the RF tag. The performance of the RF tag can be accurately described, and the basis for further optimizing the RF tag is provided.

Description

Technical Field

[0001] This invention belongs to the field of RF tag technology, and particularly relates to a method and system for detecting the performance of RF tags in a multipath channel environment. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] RF tags, as a contactless automatic identification technology, are widely used in fields such as identification, item tracking, and information collection. Especially in modern industrial and commercial automation, such as production line management and sales channel management, RF tag technology has become indispensable.

[0004] The working principle of RF tags is as follows: The tag is placed in a magnetic field, and the reader receives and interprets the radio frequency signal it emits. The tag transmits the stored information through an induced current, or actively sends a signal at a specific frequency. The reader reads and decodes the signal and sends it to a central information system for data processing. However, due to environmental influences, the signal carrying useful information attenuates during propagation, while signal noise increases. This leads to problems such as RF tags becoming insensitive or unable to read information in practical applications.

[0005] In existing technologies, in order to test the actual effect of RF tags, the signal-to-noise ratio at the signal receiving point of the RF tag is usually tested to determine the performance of the RF tag. However, this method of judging performance by signal-to-noise ratio can only determine whether the performance of the RF tag meets the requirements. It lacks data on signal attenuation and noise increase, and has little reference value for how to improve the RF tag. Summary of the Invention

[0006] To address the technical problems mentioned above, this invention provides a method and system for detecting the performance of RF tags in a multipath channel environment. By detecting the degree of signal power attenuation and the degree of noise power increase respectively, it can accurately describe the performance of RF tags and provide a basis for further optimization of RF tags.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] The first aspect of the present invention provides a method for detecting the performance of RF tags in a multipath channel environment, comprising:

[0009] Obtain the signal power and noise power of the RF tag at the initial and final detection points in a multipath channel environment;

[0010] Calculate the signal attenuation and noise increase based on the signal power and noise power at the initial and final detection points;

[0011] Calculate the ratio of signal attenuation to noise increase, and use this ratio as the performance index of the RF tag.

[0012] Furthermore, the endpoint detection point includes: a distance detection point, a near-vision detection point, or a non-visual distance detection point.

[0013] Furthermore, the performance index includes: the far-viewing distance performance index of the far-viewing distance detection point, the near-viewing distance performance index of the near-viewing distance detection point, and the non-viewing distance performance index of the non-viewing distance detection point.

[0014] Furthermore, it also includes: calculating the comprehensive performance index of the RF tag based on the aforementioned far-viewing distance performance index, near-viewing distance performance index, and non-viewing distance performance index.

[0015] Q = Aq 1 +Bq 2 +Cq 3

[0016] Where, q 1 q 2 q 3 These are the farsightedness performance index, nearsightedness performance index, and non-visual distance performance index, respectively. A, B, and C are all index weights.

[0017] Furthermore, before calculating the signal attenuation and noise increase, the power consumption component is added to the signal power and noise power at the endpoint detection point, respectively.

[0018] Furthermore, the signal power consumption component is calculated as follows:

[0019] S1=[(P1+P2)-(p3+p4)](n / m)

[0020] Where (P1+P2) is the power of the initial detection point, (p3+p4) is the power of the final detection point, and (n / m) is the power fraction of the signal consumption.

[0021] Furthermore, the noise power consumption component is calculated as follows:

[0022] S2=m-S1

[0023] Where S1 and S2 are the signal power consumption component and the noise power consumption component, respectively, and m is the total power value of the initial detection point.

[0024] A second aspect of the present invention provides an RF tag performance detection system in a multipath channel environment, comprising:

[0025] The data acquisition module is configured to acquire the signal power and noise power of the RF tag at the initial and final detection points in a multipath channel environment.

[0026] The data calculation module is configured to calculate the signal attenuation and noise increase based on the signal power and noise power at the initial and final detection points.

[0027] The performance testing module is configured to calculate the ratio of signal attenuation to noise increase, and use the ratio as the performance index of the RF tag.

[0028] A third aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the RF tag performance detection method in a multipath channel environment as described above.

[0029] A fourth aspect of the present invention provides a computer device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps in the RF tag performance detection method in a multipath channel environment as described above.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] This invention provides a method for testing the performance of RF tags in a multipath channel environment. By detecting the power attenuation of the signal and the increase in noise power, it can accurately describe the performance of RF tags and provide a basis for further optimization of RF tags, thus solving the problem that the RF tag performance test results have no reference value for RF tag improvement. Attached Figure Description

[0032] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0033] Figure 1 This is a flowchart of an RF tag performance detection method in a multipath channel environment according to Embodiment 1 of the present invention. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0036] Example 1

[0037] This embodiment provides a method for detecting the performance of RF tags in a multipath channel environment, such as... Figure 1 As shown, it includes the following steps:

[0038] Step 1: Obtain the signal power and noise power of the RF tag at the initial and final detection points in a multipath channel environment;

[0039] Step 2: Based on the signal power and noise power at the initial detection point and the final detection point, calculate the signal attenuation and noise increase by subtraction respectively;

[0040] Step 3: Calculate the ratio of signal attenuation to noise increase, and use this ratio as the performance index of the RF tag.

[0041] The endpoint detection points include: far-sighted detection points, near-sighted detection points, or non-visual-distance detection points; the initial detection point is the signal emission point.

[0042] The performance indices include: the far-viewing distance performance index of the far-viewing distance test point, the near-viewing distance performance index of the near-viewing distance test point, and the non-viewing distance performance index of the non-viewing distance test point.

[0043] Step 4: Calculate the overall performance index of the RF tag based on the far-seeing distance performance index, near-seeing distance performance index, and non-seeing distance performance index, using the following formula:

[0044] Q = Aq 1 +Bq 2 +Cq 3

[0045] Where Q is the overall performance index, q 1 q 2 q 3 These are the farsightedness performance index, the nearsightedness performance index, and the non-visual distance performance index. The performance index is a constant, and A, B, and C are all index weights.

[0046] Before calculating the signal attenuation and noise increase, the power consumption component is added to the signal power and noise power at the endpoint detection point, respectively.

[0047] The signal power consumption component is calculated as follows:

[0048] S1=[(P1+P2)-(p3+p4)](n / m)

[0049] The noise power consumption component is calculated as follows:

[0050] S2=m-S1

[0051] Where S1 and S2 are the signal power consumption component and the noise power consumption component, respectively; (P1+P2) is the power of the initial detection point, where P1 is the signal power and P2 is the noise power; (p3+p4) is the power of the final detection point, where p3 is the signal power and p4 is the noise power; (n / m) is the signal power consumption fraction, where m is the total power value of the initial detection point and n is the total power value of the final detection point.

[0052] This embodiment provides a method for testing the performance of RF tags in a multipath channel environment. It obtains the signal power and noise power of the RF tag at the initial and final detection points in the multipath channel environment. Based on the signal power and noise power at the initial and final detection points, it calculates the signal attenuation and noise increase, respectively. The ratio of signal attenuation to noise increase is then calculated and used as the performance index of the RF tag. By separately detecting the degree of signal power attenuation and noise power increase, this method accurately describes the RF tag's performance and provides a basis for further optimization, thus addressing the problem that RF tag performance test results are not valuable for RF tag improvement.

[0053] Example 2

[0054] This embodiment provides an RF tag performance detection system in a multipath channel environment, which specifically includes:

[0055] The data acquisition module is configured to acquire the signal power and noise power of the RF tag at the initial and final detection points in a multipath channel environment.

[0056] The data calculation module is configured to calculate the signal attenuation and noise increase based on the signal power and noise power at the initial and final detection points.

[0057] The performance testing module is configured to calculate the ratio of signal attenuation to noise increase, and use the ratio as the performance index of the RF tag.

[0058] The endpoint detection points include: farsightedness detection points, nearsightedness detection points, or non-visual distance detection points.

[0059] The performance indices include: the far-viewing distance performance index of the far-viewing distance test point, the near-viewing distance performance index of the near-viewing distance test point, and the non-viewing distance performance index of the non-viewing distance test point.

[0060] The comprehensive performance testing module is configured to calculate the comprehensive performance index of the RF tag based on the far-viewing distance performance index, the near-viewing distance performance index, and the non-viewing distance performance index.

[0061] Q = Aq 1 +Bq 2 +Cq 3

[0062] Where, q 1 q 2 q 3 These are the farsightedness performance index, nearsightedness performance index, and non-visual distance performance index, respectively. A, B, and C are all index weights.

[0063] Before calculating the signal attenuation and noise increase, the power consumption component is added to the signal power and noise power at the endpoint detection point, respectively.

[0064] The signal power consumption component is calculated as follows:

[0065] S1=[(P1+P2)-(p3+p4)](n / m)

[0066] Where (P1+P2) is the power of the initial detection point, (p3+p4) is the power of the final detection point, and (n / m) is the power fraction of the signal consumption.

[0067] The noise power consumption component is calculated as follows:

[0068] S2=m-S1

[0069] Where S1 and S2 are the signal power consumption component and noise power consumption component, respectively, m is the total power value of the initial detection point, and n is the total power value of the final detection point.

[0070] This embodiment provides an RF tag performance testing system in a multipath channel environment. By detecting the degree of signal power attenuation and the degree of noise power increase respectively, it can accurately describe the RF tag performance and provide a basis for further optimization of the RF tag. This solves the problem that the RF tag performance test results have no reference value for RF tag improvement.

[0071] It should be noted that each module in this embodiment corresponds one-to-one with each step in Embodiment 1, and their specific implementation processes are the same, so they will not be repeated here.

[0072] Example 3

[0073] This embodiment provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps in the RF tag performance detection method under a multipath channel environment as described in Embodiment 1 above.

[0074] Example 4

[0075] This embodiment provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the steps in the RF tag performance detection method under a multipath channel environment as described in Embodiment 1 above.

[0076] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of hardware embodiments, software embodiments, or embodiments combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0077] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0078] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0079] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0080] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0081] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for detecting the performance of RF tags in a multipath channel environment, characterized in that, include: Obtain the signal power and noise power of the RF tag at the initial and final detection points in a multipath channel environment; Calculate the signal attenuation and noise increase based on the signal power and noise power at the initial and final detection points; Calculate the ratio of signal attenuation to noise increase, and use this ratio as the performance index of the RF tag; The performance indices include: the far-viewing performance index of the far-viewing distance detection point, the myopia performance index of the near-viewing distance detection point, and the non-viewing distance performance index of the non-viewing distance detection point. It also includes: calculating the comprehensive performance index of the RF tag based on the aforementioned far-seeing distance performance index, near-seeing distance performance index, and non-seeing distance performance index. Q=Aq 1 +Bq 2 +Cq 3 Where, q 1 q 2 q 3 These are the farsightedness performance index, nearsightedness performance index, and non-visual distance performance index, respectively. A, B, and C are all index weights.

2. The RF tag performance detection method in a multipath channel environment as described in claim 1, characterized in that, The endpoint detection points include: farsightedness detection points, nearsightedness detection points, or non-visual distance detection points.

3. The RF tag performance detection method in a multipath channel environment as described in claim 1, characterized in that, Before calculating the signal attenuation and noise increase, the power consumption component is added to the signal power and noise power at the endpoint detection point, respectively.

4. The RF tag performance detection method in a multipath channel environment as described in claim 3, characterized in that, The signal power consumption component is calculated as follows: S1=[(P1+P2)-(p3+p4)](n / m) Where (P1+P2) is the power of the initial detection point, (p3+p4) is the power of the final detection point, and (n / m) is the power fraction of the signal consumption.

5. The RF tag performance detection method in a multipath channel environment as described in claim 3, characterized in that, The noise power consumption component is calculated as follows: S2=m-S1 Where S1 and S2 are the signal power consumption component and the noise power consumption component, respectively, and m is the total power value of the initial detection point.

6. An RF tag performance detection system in a multipath channel environment using the method described in claim 1, characterized in that, include: The data acquisition module is configured to acquire the signal power and noise power of the RF tag at the initial and final detection points in a multipath channel environment. The data calculation module is configured to calculate the signal attenuation and noise increase based on the signal power and noise power at the initial and final detection points. The performance testing module is configured to calculate the ratio of signal attenuation to noise increase, and use the ratio as the performance index of the RF tag.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the steps in the RF tag performance detection method in a multipath channel environment as described in any one of claims 1-5.

8. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps in the RF tag performance detection method under a multipath channel environment as described in any one of claims 1-5.

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