Leaky coaxial cable balance test method, storage medium and electronic equipment

Abstract

The invention discloses a leaky coaxial cable balance test method, a storage medium and electronic equipment, and the method comprises the following steps: a signal source is connected with a power divider, a test system is calibrated, and the system is corrected according to required frequency division; the other end of the tested sample is provided with an absorption load; respectively connecting the two spectrum analyzers or equivalent instruments with the corresponding antennas by using test leads; moving the test vehicle from one end of the tested sample until the test vehicle moves to the other end of the tested sample; and subtracting the power levels Nr1 and Nr2 received at the same time, namely at the same position, and then obtaining absolute values, and performing quality evaluation on probability values, namely balance LB, of all the obtained absolute values. According to the invention, by measuring the balance of the cable, point-to-point comparison is carried out on the balance of the two cables with different polarizations, so that the deviation of a test value caused by different signal source electronic pulse periods and test position changes in the test process is avoided. And compared with the prior art, the reliability of the cable balance test can be obviously improved, the test repetition precision is improved, and the method is suitable for popularization and application.

Description

Technical Field

[0001] The present invention relates to the technical field of digital communication cables, and in particular to a balance test method, storage medium and electronic equipment for a leaky coaxial cable. Background Art

[0002] With the vigorous development of wireless communication technology, new usage requirements emerge in an endless stream. Leaky coaxial cable, as a channel for wireless signal transmission, has been constantly changing its usage mode to adapt to new requirements. A mode of using two leaky coaxial cables with different polarization modes to transmit signals in the same transmission frequency band has been widely promoted. The smaller the difference in the main polarization signal strength of the two cables, that is, the cable balance, the smaller the signal transmission fluctuation and the more stable the signal. The balance of the cable is greatly affected by the fluctuation of the equipment and the test position. The existing test method is to judge the balance after the test of the entire cable is completed. It cannot effectively avoid the influence of the test position and signal fluctuation. Based on the above, a new test method is proposed. Summary of the invention

[0003] The purpose of the present invention is to provide a balance test method for a leaky coaxial cable, so as to ensure that the balance test of the cable is free from test fluctuations caused by factors such as equipment and test position, thereby causing misjudgment of cable indicators and affecting the use effect of the cable.

[0004] The technical solution adopted by the present invention is: A method for testing the balance of a leaky coaxial cable comprises the following steps: A: Signal source connector power divider, connect one end of the two test leads to the power divider, and the other end to the spectrum analyzer or equivalent instrument, calibrate the test system, and calibrate the system according to the required frequency division to ensure that the loss of the electrical circuit, leads and power divider in the instrument is not included in the test sample; B: Disconnect one end of the two test leads from the spectrum analyzer or equivalent instrument, and connect one end of the two tested samples. Install an absorbing load with the same absorption power, accuracy, frequency band, and voltage standing wave ratio requirements on the other end of the tested samples. C: Two spectrum analyzers or equivalent instruments with corresponding antennas fixed to the mobile test vehicle; D: Connect two spectrum analyzers or equivalent instruments to the corresponding antennas using test leads; move the test vehicle from one end of the sample to the other end of the sample, and keep the horizontal distance between the antenna and the sample unchanged at 2 meters during the test; after the test is completed, record the received power levels of the two spectrum analyzers or other applicable instruments during the movement and record them as N r1 , N r2 ; E: The received power level Nr at the same time and location 1 , Nr 2 Subtract and take the absolute value, and take the probability value of all the absolute values ​​obtained, namely the balance LB, for quality evaluation.

[0005] The measured balance typical values ​​are characterized by: LB 50% balance: refers to a 50% acceptance probability, i.e. 50% of the measured local balance test values ​​are greater than this value; LB 80% balance: refers to 80% acceptance probability, that is, 80% of the measured local balance test values ​​are greater than this value; LB 95% balance: refers to an 80% acceptance probability, that is, 95% of the measured local balance test values ​​are greater than this value.

[0006] The distance between the tested sample and the ground is not less than 10CM.

[0007] The test sample receives the level difference at the same point and the cable balance formula: LB(x) = │ N r1 (x)- N r2 (x)│ Where: LB (x) is the balance of a certain point in the cable, N r1 (x) is the receiving level at a certain point on a cable; N r2 (x) is the receiving level at a certain point on the other cable; The LB(x) value is the probability value of 95%, 80% or 50% of all balance test values, and the unit is dB.

[0008] When the sample to be tested is a cable for capacity expansion, repeat the entire procedure and perform a balance test on the two leakage coaxial cables of the system according to the test requirements.

[0009] A computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the device where the computer-readable storage medium is located executes the balance test method for a leaky coaxial cable.

[0010] An electronic device comprises: a memory and a processor, wherein the memory stores a program that can be run on the processor, and when the processor executes the program, the balance test method of a leaky coaxial cable is implemented.

[0011] The present invention measures the cable balance and compares the balance of two cables with different polarizations point-to-point, thereby avoiding the deviation of the test value caused by different electronic pulse cycles of the signal source and changes in the test position during the test. Compared with the prior art, the reliability of the cable balance test can be significantly improved, the test repetition accuracy can be improved, and it is suitable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 is a flow chart of the present invention; Figure 2 This is a test connection schematic diagram of the present invention; Figure 3 This is a test effect diagram of the balance of the two signal sources described in the present invention; Figure 4 This is a test effect diagram of a signal source balance according to the present invention. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] like Figure 1 and Figure 2 As shown, the present invention comprises the following steps: A: Connect the signal source 1 to the power divider 13, connect one end of the two test leads 2 to the power divider 13 respectively, and connect the other end to the spectrum analyzer or equivalent instrument 10 respectively, calibrate the test system and calibrate the system according to the required frequency division to ensure that the loss of the electrical circuit, leads and power divider in the instrument is not included in the test sample. Each instrument has a detailed tutorial calibration process, which is a well-known technology and will not be described in detail; B: After disconnecting one end of the two test leads 2 from the spectrum analyzer or equivalent instrument 10, connect one end of the two test samples 4 through the sample connector 3 respectively. The two test samples 4 are fixed horizontally on the test rod 5 to ensure that they are parallel to the ground 12. The other end of the test sample 4 is installed with an absorption load 6 with the same absorption power, accuracy, frequency band, and voltage standing wave ratio index requirements; C: Two spectrum analyzers or equivalent instruments 10 and corresponding antennas 7 are fixed to a mobile test vehicle 9; in actual use, the mobile test vehicle 9 is fixedly set on a track 8, the track 8 is set on the ground and is parallel to the two tested samples 4.

[0016] D: Connect two spectrum analyzers or equivalent instruments 10 to the corresponding antennas 7 using test leads 11 respectively; move the test vehicle 9 from one end of the tested sample 4 to the other end of the tested sample 4, and keep the horizontal distance between the antenna 7 and the tested sample 4 unchanged at 2 meters during the test; after the test is completed, record the receiving power levels of the two spectrum analyzers or equivalent instruments 10 during the moving process and record them as N r1 , N r2 ; E: The received power level Nr at the same time and location 1 , Nr 2 Subtract and take the absolute value, and take the probability value of all the absolute values ​​obtained, namely balance (LB), for quality evaluation.

[0017] Furthermore, the measured typical values ​​of balance are characterized by: LB 50% balance: refers to a 50% acceptance probability, i.e. 50% of the measured local balance test values ​​are greater than this value; LB 80% balance: refers to 80% acceptance probability, that is, 80% of the measured local balance test values ​​are greater than this value; LB 95% balance: refers to an 80% reception probability, that is, 95% of the measured local balance test values ​​are greater than this value. The LB95% receiving power level, LB80% and LB50% (median value) receiving power level values ​​can be used to characterize the degree of consistency of the radiation field strength of the two tested samples along the length of the cable. This is a statistical method automatically set in existing spectrum analyzers.

[0018] The balance formula is as follows: LB(x) = │ N r1 (x)- N r2 (x)│ Where: LB (x) is the balance of a certain point in the cable; N r1 (x) is the receiving level at a certain point on a cable; N r2 (x) is the receiving level at a certain point on the other cable.

[0019] The following is a further explanation of balance with specific examples, such as Figure 3 The test diagram for the two signal sources is connected to the test samples respectively. At a frequency of 3500MHz, the received power level values ​​(Nr1, Nr2) measured at the same point of the two samples are subtracted and the absolute value is taken to form Figure 3 The point value (LB) in the test diagram in the table means that after the test, the test system takes a probability value no greater than 95% among all the balance (LB) values, which is the final balance (LB) value, expressed as 3500MHz balance (95%) 4.95; like Figure 4 The test diagram (patented method) is a signal source connected to the test sample through a power divider. At a frequency of 3500MHz, the received power level values ​​(Nr1, Nr2) of the two samples at the same point are subtracted and the absolute value is taken to form Figure 4 The point value (LB) in the test diagram in the table means that after the test, the test system takes the value with a probability of no more than 95% among all the balance (LB) values, which is the final balance (LB) value, expressed as 3500MHz balance (95%) 3.65; By comparison, it can be seen that the test method in which a signal source is connected to the test samples through a power divider (the patented method) has a relatively stable test graph with a small fluctuation amplitude, which can effectively eliminate the deviation of the test value caused by the fluctuation of the signal source. The test index is better and closer to the actual value of the sample under test, which is more suitable for the balance test of the cable.

[0020] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the device where the computer-readable storage medium is located executes the balance test method of the leaky coaxial cable as described above. The computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device that can carry the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory and other memory.

[0021] An electronic device comprises: a memory and a processor, wherein the memory stores a program that can be run on the processor, and when the processor executes the program, the balance test method of a leaky coaxial cable as described above is implemented.

[0022] If the module / unit integrated in the electronic device described in this application is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware devices through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by the processor, the steps of each of the above-mentioned method embodiments can be implemented.

[0023] Furthermore, the computer-readable storage medium may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function, etc.; the data storage area may store data created according to the use of the blockchain node, etc.

[0024] The computer-readable storage medium stores computer-readable instructions, and the computer-readable instructions are executed by a processor in an electronic device to implement the balance test method for a leaky coaxial cable described in any one of the above embodiments.

[0025] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative, for example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation.

[0026] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0027] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

[0028] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or are inherent to these processes, methods, products or apparatuses.

[0029] Note that the above are only preferred embodiments of the present invention and the principles of the application technology. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the specific embodiments described herein, and may include more other effective embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for testing the balance of a leaky coaxial cable, characterized in that: The steps include: A: Signal source connector power divider, connect one end of the two test leads to the power divider, and the other end to the spectrum analyzer or equivalent instrument, calibrate the test system, and calibrate the system according to the required frequency division to ensure that the loss of the electrical circuit, leads and power divider in the instrument is not included in the test sample; B: Disconnect one end of the two test leads from the spectrum analyzer or equivalent instrument, and connect one end of the two tested samples. Install an absorbing load with the same absorption power, accuracy, frequency band, and voltage standing wave ratio requirements on the other end of the tested samples. C: Two spectrum analyzers or equivalent instruments with corresponding antennas fixed to the mobile test vehicle; D: Connect two spectrum analyzers or equivalent instruments to the corresponding antennas using test leads; move the mobile test vehicle from one end of the sample to the other end of the sample, and keep the horizontal distance between the antenna and the sample unchanged at 2 meters during the test; After the test is completed, record the received power levels of the two spectrum analyzers or other suitable instruments during the movement and record them as N r1 , N r2 ; E: Subtract the received power levels Nr1 and Nr2 at the same time and location and take the absolute value. Take the probability value of all the absolute values ​​obtained, i.e., the balance LB, for quality evaluation.

2. A method for testing the balance of a leaky coaxial cable according to claim 1, characterized in that: The measured balance typical values ​​are characterized by: LB 50% balance: refers to a 50% acceptance probability, i.e. 50% of the measured local balance test values ​​are greater than this value; LB 80% balance: refers to 80% acceptance probability, that is, 80% of the measured local balance test values ​​are greater than this value; LB 95% balance: refers to an 80% acceptance probability, that is, 95% of the measured local balance test values ​​are greater than this value.

3. The method for testing the balance of a leaky coaxial cable according to claim 1, characterized in that: The distance between the tested sample and the ground is not less than 10CM.

4. The testing method according to claim 1, characterized in that: The test sample receives the level difference at the same point and the cable balance formula: LB(x)= │ N r1 (x)- N r2 (x)│ Where: LB (x) is the balance of a certain point in the cable, N r1 (x) is the receiving level at a certain point on a cable; N r2 (x) is the receiving level at a certain point on the other cable; The LB(x) value is the probability value of 95%, 80% or 50% of all balance test values, and the unit is dB.

5. The testing method according to claim 1, characterized in that: When the sample to be tested is a cable for capacity expansion, repeat the entire procedure and perform a balance test on the two leakage coaxial cables of the system according to the test requirements.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the device where the computer-readable storage medium is located executes the balance test method for a leaky coaxial cable according to any one of claims 1 to 5.

7. An electronic device, characterized in that: include: A memory and a processor, wherein the memory stores a program that can be run on the processor, and when the processor executes the program, the balance test method for a leaky coaxial cable as described in any one of claims 1 to 5 is implemented.

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