A method, device, electronic device and storage medium for evaluating performance of leaky cable

Abstract

The present invention provides a method, device, electronic device and storage medium for evaluating the performance of a leaky cable, which are applied to the field of cable testing technology. The method comprises: obtaining the link loss of each leaky cable among N leaky cables, where N is an integer greater than 1; respectively calculating the difference in link loss between every two leaky cables among the N leaky cables; and evaluating the performance of the N leaky cables according to the difference in link loss between every two leaky cables among the N leaky cables. The method further evaluates the performance of the leaky cable by calculating the difference in link loss between every two leaky cables among the N leaky cables, based on the difference between the leaky cable and other leaky cables, thereby improving the accuracy of the leaky cable performance evaluation method.

Description

Technical Field

[0001] The present application relates to the field of cable testing, and in particular to a method, device, electronic equipment and storage medium for evaluating the performance of a leaky cable. Background Art

[0002] With the development of urban rail transit, the use of leaky cables is increasing due to their uniform signal coverage, wide bandwidth, long service life, high stability and reliability, high compressive strength and high tensile strength. Link loss is one of the important indicators to measure the performance of leaky cables. In the existing technology, the performance of leaky cables is evaluated only by calculating the link loss of a single leaky cable. However, in the actual process of signal transmission, the transmission effect of the leaky cable signal will also be affected by other leaky cables, resulting in low accuracy of the evaluation method. Summary of the invention

[0003] The embodiments of the present application provide a leaky cable performance evaluation method, device, electronic device and storage medium to solve the problem of low accuracy of existing leaky cable performance evaluation methods.

[0004] In order to solve the above technical problems, this application is implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides a method for evaluating performance of a leaky cable. The method comprises:

[0006] Obtaining the link loss of each leaky cable among N leaky cables, where N is an integer greater than 1;

[0007] Calculating the difference in link loss between every two leaky cables among the N leaky cables;

[0008] The performance of the N leaky cables is evaluated according to the difference in link losses between every two leaky cables among the N leaky cables.

[0009] Optionally, obtaining the link loss of each leaky cable among the N leaky cables includes:

[0010] Obtaining M link losses of each of the N leaky cables, where M is an integer greater than or equal to 1;

[0011] The respectively calculating the difference in link loss between every two leaky cables among the N leaky cables comprises:

[0012] Calculating the difference of M link losses between every two leaky cables in the N leaky cables respectively, and obtaining M difference values ​​corresponding to every two leaky cables in the N leaky cables;

[0013] The step of evaluating the performance of the N leaky cables according to the difference in link loss between every two leaky cables among the N leaky cables comprises:

[0014] The performance of the N leaky cables is evaluated according to the M differences corresponding to every two leaky cables among the N leaky cables.

[0015] Optionally, the evaluating the performance of the N leaky cables according to M differences corresponding to every two leaky cables among the N leaky cables includes:

[0016] Selecting the first difference value corresponding to each two leaky cables from the M difference values ​​corresponding to each two leaky cables in the N leaky cables, wherein the first difference value corresponding to each two leaky cables is the Kth difference value among the M difference values ​​corresponding to the two leaky cables arranged from small to large, and K is determined according to the signal transmission percentage of the leaky cable;

[0017] The performance of the N leaky cables is evaluated according to the first difference value corresponding to every two leaky cables among the N leaky cables.

[0018] Optionally, the N leaky cables include a first leaky cable and a second leaky cable;

[0019] The step of evaluating the performance of the N leaky cables according to the difference in link loss between every two leaky cables among the N leaky cables comprises:

[0020] When the difference between the link losses of the first leaky cable and the second leaky cable is less than or equal to a target value, evaluating whether the difference between the first leaky cable and the second leaky cable meets the target requirement;

[0021] In the case where the difference in link loss between the first leaky cable and the second leaky cable is greater than a target value, it is assessed that the difference between the first leaky cable and the second leaky cable does not meet the target requirement.

[0022] Optionally, the method further comprises:

[0023] Acquire Y leaky cables from the N leaky cables, wherein a difference in link loss between every two leaky cables from the Y leaky cables is greater than the target value;

[0024] Calculating the differences in link losses between the Y leaky cables and the third leaky cable respectively to obtain Y second difference values;

[0025] Calculating the differences in link losses between the Y leaky cables and the fourth leaky cable respectively to obtain Y third differences, wherein the first leaky cable and the second leaky cable are two leaky cables with the smallest difference in link losses among the N leaky cables;

[0026] Selecting the largest target difference among the Y second differences and the Y third differences;

[0027] A target leaky cable among the Y leaky cables is determined to be an unqualified leaky cable, wherein a difference in link loss between the target leaky cable and the third leaky cable or a difference in link loss between the target leaky cable and the fourth leaky cable is the maximum target difference.

[0028] Optionally, obtaining M link losses of each of the N leaky cables includes:

[0029] When the distances between the N half-wave dipoles and the N leaky cables are all the first distances, respectively obtaining M power levels received by each half-wave dipole and a power level of a signal source at an input end of each leaky cable;

[0030] According to the ratio of the M power levels received by each half-wave dipole to the power level of the signal source at the input end of each leaky cable, the M link losses of each leaky cable among the N leaky cables are obtained.

[0031] Optionally, the M power levels are obtained by placing the half-wave dipole on a mobile carrier and maintaining a relative distance between the mobile carrier and the leaky cable at a first distance, by the mobile carrier adopting a target movement test mode in different preset time periods, and the half-wave dipole adopting a target signal receiving mode in the different preset time periods, the target movement mode is one of a first movement test mode and a second movement test mode, the first movement test mode is a uniform speed movement test of the mobile carrier, the second movement mode is a test in which the mobile carrier moves to a preset position, the target signal receiving mode is one of a first signal receiving mode and a second signal receiving mode, the first signal receiving mode is that the half-wave dipole receives the signal of the leaky cable at multiple preset positions in a preset time period, and the second signal receiving mode is that the half-wave dipole continuously receives the signal of the leaky cable in a preset time period.

[0032] In a second aspect, an embodiment of the present invention further provides a leaky cable performance evaluation device, the leaky cable performance evaluation device comprising:

[0033] A first acquisition module is used to acquire the link loss of each leaky cable among N leaky cables, where N is an integer greater than 1;

[0034] A first calculation module, used to respectively calculate the difference in link loss between every two leaky cables among the N leaky cables;

[0035] The first evaluation module is used to evaluate the performance of the N leaky cables according to the difference in link loss between every two leaky cables among the N leaky cables.

[0036] Optionally, the first acquisition module includes:

[0037] A first acquisition unit is used to acquire M link losses of each of the N leaky cables, where M is an integer greater than or equal to 1;

[0038] The first computing module comprises:

[0039] A first calculation unit is used to calculate the difference of M link losses between every two leaky cables in the N leaky cables, and obtain M difference values ​​corresponding to every two leaky cables in the N leaky cables;

[0040] The first evaluation module comprises:

[0041] The first evaluation unit is configured to evaluate the performance of the N leaky cables according to M differences corresponding to every two leaky cables among the N leaky cables.

[0042] Optionally, the first evaluation unit includes:

[0043] A first selection subunit is configured to select a first difference value corresponding to each two leaky cables from the M differences corresponding to each two leaky cables in the N leaky cables, wherein the first difference value corresponding to each two leaky cables is the Kth difference value among the M differences corresponding to the two leaky cables arranged from small to large, and K is determined according to the signal transmission percentage of the leaky cable;

[0044] The first evaluation subunit is configured to evaluate the performance of the N leaky cables according to a first difference value corresponding to every two leaky cables among the N leaky cables.

[0045] Optionally, the N leaky cables include a first leaky cable and a second leaky cable;

[0046] The first evaluation module comprises:

[0047] a second evaluation unit, configured to evaluate whether the difference between the first leaky cable and the second leaky cable meets a target requirement when a difference between the link losses of the first leaky cable and the second leaky cable is less than or equal to a target value;

[0048] The third evaluation unit is configured to evaluate that the difference between the first leaky cable and the second leaky cable does not meet a target requirement when the difference between the link losses of the first leaky cable and the second leaky cable is greater than a target value.

[0049] Optionally, the device further comprises:

[0050] A second acquisition module is used to acquire Y leaky cables from the N leaky cables, wherein a difference in link loss between every two leaky cables from the Y leaky cables is greater than the target value;

[0051] A second calculation module is used to calculate the difference between the link losses of the Y leaky cables and the third leaky cable respectively to obtain Y second difference values;

[0052] a third calculation module, configured to respectively calculate the differences in link losses between the Y leaky cables and a fourth leaky cable to obtain Y third differences, wherein the first leaky cable and the second leaky cable are two leaky cables having the smallest difference in link losses among the N leaky cables;

[0053] A first selection module is used to select the largest target difference value among the Y second differences and the Y third differences;

[0054] The first determination module is configured to determine that a target leaky cable among the Y leaky cables is an unqualified leaky cable, wherein a difference in link loss between the target leaky cable and the third leaky cable or a difference in link loss between the target leaky cable and the fourth leaky cable is the maximum target difference.

[0055] Optionally, the first acquiring unit includes:

[0056] A first acquisition subunit is used to respectively acquire M power levels received by each half-wave dipole and a power level of a signal source at an input end of each leaky cable when the distances between the N half-wave dipoles and the N leaky cables are all first distances;

[0057] The second acquisition subunit is used to acquire M link losses of each of the N leaky cables according to the ratio of the M power levels received by each half-wave dipole to the power level of the signal source at the input end of each leaky cable.

[0058] Optionally, the M power levels are obtained by placing the half-wave dipole on a mobile carrier and maintaining a relative distance between the mobile carrier and the leaky cable at a first distance, by the mobile carrier adopting a target movement test mode in different preset time periods, and the half-wave dipole adopting a target signal receiving mode in the different preset time periods, the target movement mode is one of a first movement test mode and a second movement test mode, the first movement test mode is a uniform speed movement test of the mobile carrier, the second movement mode is a test in which the mobile carrier moves to a preset position, the target signal receiving mode is one of a first signal receiving mode and a second signal receiving mode, the first signal receiving mode is that the half-wave dipole receives the signal of the leaky cable at multiple preset positions in a preset time period, and the second signal receiving mode is that the half-wave dipole continuously receives the signal of the leaky cable in a preset time period.

[0059] In a third aspect, an embodiment of the present invention further provides a leaky cable performance evaluation device, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the steps of the above-mentioned leaky cable evaluation method when executed by the processor.

[0060] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above-mentioned leaky cable assessment method are implemented.

[0061] The leaky cable evaluation method of the embodiment of the present application obtains the link loss of each leaky cable in N leaky cables, where N is an integer greater than 1; respectively calculates the difference in link loss between every two leaky cables in the N leaky cables; and evaluates the performance of the N leaky cables according to the difference in link loss between every two leaky cables in the N leaky cables. The method further evaluates the performance of the leaky cable by calculating the difference in link loss between every two leaky cables in the N leaky cables and by the difference between the leaky cable and other leaky cables, thereby improving the accuracy of the leaky cable performance evaluation method. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0063] Figure 1 is a flow chart of a leaky cable performance evaluation method provided in an embodiment of the present application;

[0064] Figure 2 It is one of the schematic diagrams of the test system in the leaky cable performance evaluation method provided in the embodiment of the present application;

[0065] Figure 3 This is the second schematic diagram of the test system in the leaky cable performance evaluation method provided in the embodiment of the present application;

[0066] Figure 4 is a flow chart of a test system in a leaky cable performance evaluation method provided in an embodiment of the present application;

[0067] Figure 5 is a structural diagram of a leaky cable performance evaluation device provided by another embodiment of the present application;

[0068] Figure 6 This is a structural diagram of an electronic device provided in yet another embodiment of the present application. DETAILED DESCRIPTION

[0069] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0070] The present application embodiment provides a method for evaluating the performance of a leaky cable. Figure 1 , Figure 1 is a flow chart of a leaky cable performance evaluation method provided in an embodiment of the present application, such as Figure 1 As shown, the following steps are included:

[0071] Step 101: Obtain the link loss of each leaky cable among N leaky cables, where N is an integer greater than 1;

[0072] Step 102, respectively calculating the difference in link loss between every two leaky cables among the N leaky cables;

[0073] Step 103: Evaluate the performance of the N leaky cables according to the difference in link loss between every two leaky cables among the N leaky cables.

[0074] In the leaky cable performance evaluation method of the embodiment of the present application, the link loss of each leaky cable in N leaky cables is obtained, the difference in link loss between every two leaky cables in the N leaky cables is calculated, and the difference between the link losses of any two leaky cables is used to evaluate the difference between the two leaky cables. In the actual process of leaky cables transmitting signals, multiple leaky cables often transmit signals together. If the difference between a leaky cable and other leaky cables is too large, it is not conducive to the terminal to process the signals transmitted by multiple leaky cables. This method calculates the difference in link loss between every two leaky cables in N leaky cables, and further evaluates the performance of the leaky cable based on the difference between the leaky cable and other leaky cables, thereby improving the accuracy of the leaky cable performance evaluation method.

[0075] Optionally, obtaining the link loss of each leaky cable among the N leaky cables includes:

[0076] Obtaining M link losses of each of the N leaky cables, where M is an integer greater than or equal to 1;

[0077] The respectively calculating the difference in link loss between every two leaky cables among the N leaky cables comprises:

[0078] Calculating the difference of M link losses between every two leaky cables in the N leaky cables respectively, and obtaining M difference values ​​corresponding to every two leaky cables in the N leaky cables;

[0079] The step of evaluating the performance of the N leaky cables according to the difference in link loss between every two leaky cables among the N leaky cables comprises:

[0080] The performance of the N leaky cables is evaluated according to the M differences corresponding to every two leaky cables among the N leaky cables.

[0081] In the leaky cable performance evaluation method of the present application embodiment, see Figure 2 and Figure 3 , the link loss of each leaky cable is given by Figure 2 and Figure 3 The test system is obtained by testing. The test system consists of a mobile carrier, a mobile terminal, a multi-channel signal receiving device, multiple antennas, a distance measuring device, a multi-channel signal transmitting device, N leaky cables, and a matching load, wherein the leaky cables are supported by a non-metallic bracket.

[0082] The mobile carrier can be a controllable mobile vehicle, which is used to place the test terminal, multi-channel signal receiving device, multiple antennas and distance measuring device. The test terminal can be a notebook or desktop computer, or other terminal products with display, which is used to process the collected data and give test results and conclusions; the multi-channel signal receiving device is used to measure the signal strength received by the antenna. The scanning time of the signal receiving device is much shorter than the time for the test terminal to collect data, so that the signals scanned by the signal receiving device can be obtained by the test terminal.

[0083] The test antenna is two or more dipole antennas, and the transmission channels between the multiple antennas are isolated from each other. The polarization modes of the multiple antennas are consistent with the height of the corresponding test leaky cable and the main polarization mode is consistent. For example, the vertically polarized leaky cable corresponds to the vertically polarized antenna, and the horizontally polarized leaky cable corresponds to the horizontally polarized antenna. The multiple antennas are arranged in a straight line up and down, and the height of the center point of the antenna is the same as the corresponding leaky cable hanging height, or forms a fixed angle with the horizontal line of the leaky cable height. It maintains a certain radial distance from the leaky cable, because the working principle of the leaky cable determines that the signal in the direction facing it is the strongest. Placing the test receiving antenna at this position can accurately evaluate the performance of the leaky cable.

[0084] The distance measuring device is used to measure the distance moved by the mobile carrier and transmit the data to the test terminal, including satellite (GPS, Beidou or other positioning satellite) ranging, laser ranging and wheel ranging. The multi-channel signal transmitting device is used to transmit the corresponding frequency signals of multiple channels that need to be tested. Multiple leaky cables are of the same length and the starting and ending positions are aligned.

[0085] In this test system, the test sequence is that the antenna receives the signal first, then the multi-channel signal receiving device measures the signal strength received by the antenna, and finally the test terminal processes the signal strength received by these multi-channel signal receiving devices to calculate the link loss of every two leaky cables.

[0086] The method obtains M link losses of each leaky cable through the test system, and evaluates the performance of the leaky cable by the difference between the multiple link losses of every two leaky cables, which can reduce the error caused by the difference in single link loss and improve the accuracy of the evaluation method.

[0087] Optionally, the evaluating the performance of the N leaky cables according to M differences corresponding to every two leaky cables among the N leaky cables includes:

[0088] Selecting the first difference value corresponding to each two leaky cables from the M difference values ​​corresponding to each two leaky cables in the N leaky cables, wherein the first difference value corresponding to each two leaky cables is the Kth difference value among the M difference values ​​corresponding to the two leaky cables arranged from small to large, and K is determined according to the signal transmission percentage of the leaky cable;

[0089] The performance of the N leaky cables is evaluated according to the first difference value corresponding to every two leaky cables among the N leaky cables.

[0090] In the leaky cable performance evaluation method of the embodiment of the present application, after obtaining M link losses of each leaky cable, the M link losses of every two leaky cables are correspondingly subtracted to obtain M differences. However, since some test data may not be available when the test system actually evaluates the performance of the leaky cable, the test terminal arranges the calculated M differences in order from small to large, and selects the Kth ratio according to the signal transmission percentage of the leaky cable to evaluate the performance of the leaky cable. For example, the signal transmission percentage of the leaky cable is 95%. If the test terminal calculates 100 differences, the 100 differences are arranged in order from small to large, and the 95th difference is selected as the first difference, which can reduce the error of the evaluation method.

[0091] Optionally, the N leaky cables include a first leaky cable and a second leaky cable;

[0092] The step of evaluating the performance of the N leaky cables according to the difference in link loss between every two leaky cables among the N leaky cables comprises:

[0093] When the difference between the link losses of the first leaky cable and the second leaky cable is less than or equal to a target value, evaluating whether the difference between the first leaky cable and the second leaky cable meets the target requirement;

[0094] In the case where the difference in link loss between the first leaky cable and the second leaky cable is greater than a target value, it is assessed that the difference between the first leaky cable and the second leaky cable does not meet the target requirement.

[0095] In the leaky cable performance evaluation method of the embodiment of the present application, before calculating the difference in link loss between every two leaky cables among N leaky cables, a target value is set according to actual needs. When the calculated difference in link loss between the first leaky cable and the second leaky cable among the N leaky cables is less than or equal to the target value, it is evaluated that the difference between the first leaky cable and the second leaky cable meets the target requirement; when the calculated difference in link loss between the first leaky cable and the second leaky cable is greater than the target value, it is evaluated that the difference between the first leaky cable and the second leaky cable does not meet the target requirement.

[0096] See also Figure 4 First, the test system collects the difference data of the first leaky cable and the second leaky cable among N leaky cables in different ways. When the sampled data meets the requirement or reaches a certain time, the data collection is terminated, and the difference and the target value are judged. If the difference in link loss of the two leaky cables is less than or equal to the target value, it is evaluated that the difference of the two leaky cables meets the target requirement; if the difference in link loss of the two leaky cables is greater than the target value, it is evaluated that the difference of the two leaky cables does not meet the target requirement.

[0097] This application embodiment sets a target value according to the actual signal transmission requirements, and uses the target value as a measurement standard to evaluate whether the difference between the two leaky cables meets the requirements, and further evaluates the performance of the leaky cable, which is conducive to improving the accuracy of the leaky cable performance evaluation method.

[0098] Optionally, the method further comprises:

[0099] Acquire Y leaky cables from the N leaky cables, wherein a difference in link loss between every two leaky cables from the Y leaky cables is greater than the target value;

[0100] Calculating the differences in link losses between the Y leaky cables and the third leaky cable respectively to obtain Y second difference values;

[0101] Calculating the differences in link losses between the Y leaky cables and the fourth leaky cable respectively to obtain Y third differences, wherein the first leaky cable and the second leaky cable are two leaky cables with the smallest difference in link losses among the N leaky cables;

[0102] Selecting the largest target difference among the Y second differences and the Y third differences;

[0103] A target leaky cable among the Y leaky cables is determined to be an unqualified leaky cable, wherein a difference in link loss between the target leaky cable and the third leaky cable or a difference in link loss between the target leaky cable and the fourth leaky cable is the maximum target difference.

[0104] In the leaky cable performance evaluation method of the embodiment of the present application, by setting the target value, it is determined that the differences of some of the N leaky cables meet the target requirements, and the differences of some of the leaky cables do not meet the target requirements. However, due to considerations such as cost and operational difficulty, it is impossible to replace all the leaky cables that do not meet the target requirements. It is only possible to take the N leaky cables as a whole and find the leaky cable with the greatest difference from other leaky cables.

[0105] The method uses the third leaky cable and the fourth leaky cable with the smallest link loss difference as measurement benchmarks, and respectively obtains the link loss difference between the leaky cable that does not meet the target requirements and the third leaky cable, and the link loss difference between the leaky cable that does not meet the target requirements and the fourth leaky cable, and then selects the target leaky cable with the largest difference between the third leaky cable and the fourth leaky cable from these leaky cables that do not meet the target requirements, and finally determines that the target leaky cable is an unqualified leaky cable.

[0106] The method not only replaces unqualified leaky cables among N leaky cables at the lowest cost, but also meets the needs of the N leaky cables in the actual signal transmission process.

[0107] Optionally, obtaining M link losses of each of the N leaky cables includes:

[0108] When the distances between the N half-wave dipoles and the N leaky cables are all the first distances, respectively obtaining M power levels received by each half-wave dipole and a power level of a signal source at an input end of each leaky cable;

[0109] According to the ratio of the M power levels received by each half-wave dipole to the power level of the signal source at the input end of each leaky cable, the M link losses of each leaky cable among the N leaky cables are obtained.

[0110] In the leaky cable performance evaluation method of the embodiment of the present application, the half-wave dipole is an antenna in the test system, and N half-wave dipoles can receive M signals of N leaky cables at multiple times or multiple positions through a mobile carrier, respectively. The distances between the N half-wave dipole antennas and the N leaky cables are all the first distances. The multi-channel signal receiving device measures the power level of the M signals received by each half-wave dipole and the power level of the signal source at the input end of each leaky cable. The test terminal obtains the M link losses of each leaky cable in the N leaky cables by calculating the ratio of the M power levels received by each half-wave dipole and the power level of the signal source at the input end of each leaky cable. The test terminal then calculates the difference between the link losses of every two leaky cables according to the M link losses of each leaky cable. Exemplarily, the calculation formula may be as follows:

[0111]

[0112] Among them, L si is the link loss of leaky cable i, in dB: L sj is the link loss of leaky cable j, in dB: P ri is the received power of the i-th half-wave dipole at the first distance from the leaky cable, in W (watt); P ini is the power of the signal source at the input end of the leaky cable i, in W (watt); Prj is the received power of the jth half-wave dipole at the first distance from the leaky cable, in W (watt); P inj is the power of the signal source at the input end of the leaky cable j, in W (watt): E ri is the received power of the i-th half-wave dipole at the first distance from the leaky cable, in dB; E ini is the power of the signal source at the input end of the leaky cable i, in dB; E rj is the received power of the jth half-wave dipole at the first distance from the leaky cable, in dB; E inj is the power of the signal source at the input end of the leaky cable i, in dB.

[0113] The calculation formula of the difference of instantaneous link loss at the mth time or the mth position can be as follows:

[0114] PB ijm =||E rim -E ini |-|E rjm -E inj ||

[0115] Among them, E rim The level value received by the i-th half-wave dipole at the m-th time or the m-th position when it is the first distance from the leaky cable, in dB; E rjm The level value received by the jth half-wave dipole at the mth time or the mth position when it is the first distance away from the leaky cable, in dB.

[0116] The method calculates multiple link losses of the leaky cable through multiple signals of the leaky cable received by a half-wave dipole, which can improve the comprehensiveness and accuracy of the leaky cable performance evaluation method.

[0117] In the leaky cable performance evaluation method of the following application embodiment, there are multiple ways for the half-wave dipole to receive the signal of the leaky cable. Since the half-wave dipole is placed on a mobile carrier, the way in which it receives the signal can be achieved by controlling the movement of the mobile carrier. For example, the way to control the movement of the mobile carrier can be expressed by a logical control relationship:

[0118]

[0119] Among them, d j is the distance of the jth mobile carrier position triggering, in meters. When j=0, the mobile carrier moves at a constant speed for testing, and the half-wave dipole continuously receives the signal of the leaking cable; v j is the speed of the jth mobile carrier during the uniform speed test, in m / s. When j=0, during the uniform speed test of the mobile carrier, the half-wave dipole receives the signal of the leaking cable at the preset position.j and v j The same j value cannot be used in t j is the time taken for the jth mobile carrier uniform speed movement test, in seconds; t jn is the time taken by the mobile carrier to move at a constant speed at the nth preset position after the jth movement, in seconds; Δx is the initial position of the mobile carrier, in meters.

[0120] Optionally, the M power levels are obtained by placing the half-wave dipole on a mobile carrier and maintaining a relative distance between the mobile carrier and the leaky cable at a first distance, by the mobile carrier adopting a target movement test mode in different preset time periods, and the half-wave dipole adopting a target signal receiving mode in the different preset time periods, the target movement mode is one of a first movement test mode and a second movement test mode, the first movement test mode is a uniform speed movement test of the mobile carrier, the second movement mode is a test in which the mobile carrier moves to a preset position, the target signal receiving mode is one of a first signal receiving mode and a second signal receiving mode, the first signal receiving mode is that the half-wave dipole receives the signal of the leaky cable at multiple preset positions in a preset time period, and the second signal receiving mode is that the half-wave dipole continuously receives the signal of the leaky cable in a preset time period.

[0121] In the leaky cable performance evaluation method of the embodiment of the present application, when the half-wave dipole is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is maintained at a first distance:

[0122] When j=0, n≠0, the mobile carrier moves to a plurality of preset positions for testing. For example, the preset positions may be positions 5m, 10m, and 15m away from the initial position of the mobile carrier. When t on ≠0, the half-wave dipole continuously receives the signal of the leaky cable at multiple preset positions;

[0123] When j≠0, n=0, the mobile carrier moves at a constant speed. j =0,v j ≠0, t j ≠0, the half-wave dipole continuously receives the signal from the leaky cable when the mobile carrier moves at a constant speed;

[0124] When j≠0, n=0, the mobile carrier moves at a constant speed. j ≠0, v j =0,t j = 0, the half-wave dipole receives the signal of the leaky cable when the mobile carrier moves to the preset position at a uniform speed;

[0125] When j≠0, n=0, the mobile carrier moves at a constant speed. j ≠0, v j ≠0, t j ≠0, the half-wave dipole adopts different signal receiving modes in different preset time periods. For example, when j=3, d1≠0, v2≠0, t2≠0, and d3≠0, the signal reception is divided into three stages. The first stage is that the half-wave dipole moves to a preset position through a mobile carrier to receive the signal, and the distance interval of the mobile carrier is d1; the second stage is that the half-wave dipole continuously receives the signal in a preset time period, and the speed of the mobile carrier is v2, and the test time is t2; the third stage is that the half-wave dipole moves to a preset position through a mobile carrier to receive the signal, and the distance interval of the mobile carrier is d2;

[0126] When j≠0, n≠0, the mobile carrier adopts multiple mobile test methods, adopts uniform speed movement test in a preset time period, and moves to a preset position for test in another preset time period; when d j ≠0, v j ≠0, t j ≠0, t jn ≠0, the half-wave dipole uses multiple signal receiving methods to receive the signal of the leaky cable at multiple preset positions within a preset time period, and continuously receives the signal of the leaky cable within another preset time period. For example, when j=3, n=1, v1≠0, t1≠0, d2≠0, t 21 ≠0, d3≠0, at this time, the signal reception is divided into 4 stages. The first stage is that during the t1 time period, the mobile carrier moves at a uniform speed of v1 for testing, and the half-wave dipole continuously receives the signal of the leaking cable during this time period; the second stage is that the mobile carrier still moves at a uniform speed of v1, and the moving distance interval is d2. Within this distance interval, the half-wave dipole receives the signal of the leaking cable when the mobile carrier moves to multiple preset positions; the third stage is that during the t2 time period, when the mobile carrier moves to the preset position, the half-wave dipole continuously receives the signal of the leaking cable at the preset position; the fourth stage is that the mobile carrier moves at a uniform speed within the distance interval d3 for testing, and the half-wave dipole receives the signal of the leaking cable when the mobile carrier moves to the preset position at a uniform speed.

[0127] In the method, the mobile carrier is tested by using a variety of moving modes, and the half-wave dipole receives the signal of the leaky cable by using a variety of receiving modes, so that the data source of the leaky cable evaluation method is more comprehensive, thereby improving the accuracy of the evaluation method.

[0128] See also Figure 5 , Figure 5 is a structural diagram of a leaky cable performance evaluation device provided in an embodiment of the present application. Figure 5 As shown, the leakage cable performance evaluation device 500 includes:

[0129] A first acquisition module 501 is used to acquire the link loss of each leaky cable among N leaky cables, where N is an integer greater than 1;

[0130] A first calculation module 502 is used to respectively calculate the difference in link loss between every two leaky cables among the N leaky cables;

[0131] The first evaluation module 503 is configured to evaluate the performance of the N leaky cables according to the difference in link loss between every two leaky cables among the N leaky cables.

[0132] Optionally, the first acquisition module includes:

[0133] A first acquisition unit is used to acquire M link losses of each of the N leaky cables, where M is an integer greater than or equal to 1;

[0134] The first computing module comprises:

[0135] A first calculation unit is used to calculate the difference of M link losses between every two leaky cables in the N leaky cables, and obtain M difference values ​​corresponding to every two leaky cables in the N leaky cables;

[0136] The first evaluation module comprises:

[0137] The first evaluation unit is configured to evaluate the performance of the N leaky cables according to M differences corresponding to every two leaky cables among the N leaky cables.

[0138] Optionally, the first evaluation unit includes:

[0139] A first selection subunit is configured to select a first difference value corresponding to each two leaky cables from the M difference values ​​corresponding to each two leaky cables in the N leaky cables, wherein the first difference value corresponding to each two leaky cables is the maximum value among the M difference values ​​corresponding to the two leaky cables, or the first difference value corresponding to each two leaky cables is the Kth difference value among the M difference values ​​corresponding to the two leaky cables arranged from small to large, where K is determined according to the signal transmission percentage of the leaky cable;

[0140] The first evaluation subunit is configured to evaluate the performance of the N leaky cables according to a first difference value corresponding to every two leaky cables among the N leaky cables.

[0141] Optionally, the N leaky cables include a first leaky cable and a second leaky cable;

[0142] The first evaluation module comprises:

[0143] a second evaluation unit, configured to evaluate whether the difference between the first leaky cable and the second leaky cable meets a target requirement when a difference between the link losses of the first leaky cable and the second leaky cable is less than or equal to a target value;

[0144] The third evaluation unit is configured to evaluate that the difference between the first leaky cable and the second leaky cable does not meet a target requirement when the difference between the link losses of the first leaky cable and the second leaky cable is greater than a target value.

[0145] Optionally, the device further comprises:

[0146] A second acquisition module is used to acquire Y leaky cables from the N leaky cables, wherein a difference in link loss between every two leaky cables from the Y leaky cables is greater than the target value;

[0147] A second calculation module is used to calculate the difference between the link losses of the Y leaky cables and the third leaky cable respectively to obtain Y second difference values;

[0148] a third calculation module, configured to respectively calculate the differences in link losses between the Y leaky cables and a fourth leaky cable to obtain Y third differences, wherein the first leaky cable and the second leaky cable are two leaky cables having the smallest difference in link losses among the N leaky cables;

[0149] A first selection module is used to select the largest target difference value among the Y second differences and the Y third differences;

[0150] The first determination module is configured to determine that a target leaky cable among the Y leaky cables is an unqualified leaky cable, wherein a difference in link loss between the target leaky cable and the third leaky cable or a difference in link loss between the target leaky cable and the fourth leaky cable is the maximum target difference.

[0151] Optionally, the first acquiring unit includes:

[0152] A first acquisition subunit is used to respectively acquire M power levels received by each half-wave dipole and a power level of a signal source at an input end of each leaky cable when the distances between the N half-wave dipoles and the N leaky cables are all first distances;

[0153] The second acquisition subunit is used to acquire M link losses of each of the N leaky cables according to the ratio of the M power levels received by each half-wave dipole to the power level of the signal source at the input end of each leaky cable.

[0154] Optionally, the M power levels are obtained by placing the half-wave dipole on a mobile carrier and maintaining a relative distance between the mobile carrier and the leaky cable at a first distance, by the mobile carrier adopting a target movement test mode in different preset time periods, and the half-wave dipole adopting a target signal receiving mode in the different preset time periods, the target movement mode is one of a first movement test mode and a second movement test mode, the first movement test mode is a uniform speed movement test of the mobile carrier, the second movement mode is a test in which the mobile carrier moves to a preset position, the target signal receiving mode is one of a first signal receiving mode and a second signal receiving mode, the first signal receiving mode is that the half-wave dipole receives the signal of the leaky cable at multiple preset positions in a preset time period, and the second signal receiving mode is that the half-wave dipole continuously receives the signal of the leaky cable in a preset time period.

[0155] See also Figure 6 , Figure 6 is a structural diagram of an electronic device provided by another embodiment of the present application, such as Figure 6 As shown, the electronic device includes: a processor 601 , a communication interface 602 , a communication bus 604 and a memory 603 , wherein the processor 601 , the communication interface 602 and the memory 603 interact with each other via the communication bus 604 .

[0156] The memory 603 is used to store computer programs; the processor 601 is used to execute the programs stored in the memory 603. When the computer program is executed by the processor 601, it is used to: obtain the link loss of each leaky cable in N leaky cables, where N is an integer greater than 1; respectively calculate the difference in link loss between every two leaky cables in the N leaky cables; and evaluate the performance of the N leaky cables according to the difference in link loss between every two leaky cables in the N leaky cables.

[0157] Optionally, the processor 601 is specifically configured to:

[0158] Obtaining M link losses of each of the N leaky cables, where M is an integer greater than or equal to 1;

[0159] The respectively calculating the difference in link loss between every two leaky cables among the N leaky cables comprises:

[0160] Calculating the difference of M link losses between every two leaky cables in the N leaky cables respectively, and obtaining M difference values ​​corresponding to every two leaky cables in the N leaky cables;

[0161] The step of evaluating the performance of the N leaky cables according to the difference in link loss between every two leaky cables among the N leaky cables comprises:

[0162] The performance of the N leaky cables is evaluated according to the M differences corresponding to every two leaky cables among the N leaky cables.

[0163] Optionally, the processor 601 is specifically configured to:

[0164] Selecting the first difference value corresponding to each two leaky cables from the M difference values ​​corresponding to each two leaky cables in the N leaky cables, respectively, wherein the first difference value corresponding to each two leaky cables is the maximum value among the M difference values ​​corresponding to the two leaky cables, or the first difference value corresponding to each two leaky cables is the Kth difference value among the M difference values ​​corresponding to the two leaky cables arranged from small to large, where K is determined according to the signal transmission percentage of the leaky cable;

[0165] The performance of the N leaky cables is evaluated according to the first difference value corresponding to every two leaky cables among the N leaky cables.

[0166] Optionally, the N leaky cables include a first leaky cable and a second leaky cable;

[0167] The processor 601 is specifically configured to:

[0168] When the difference between the link losses of the first leaky cable and the second leaky cable is less than or equal to a target value, evaluating whether the difference between the first leaky cable and the second leaky cable meets the target requirement;

[0169] In the case where the difference in link loss between the first leaky cable and the second leaky cable is greater than a target value, it is assessed that the difference between the first leaky cable and the second leaky cable does not meet the target requirement.

[0170] Optionally, the processor 601 is further configured to:

[0171] Acquire Y leaky cables from the N leaky cables, wherein a difference in link loss between every two leaky cables from the Y leaky cables is greater than the target value;

[0172] Calculating the differences in link losses between the Y leaky cables and the third leaky cable respectively to obtain Y second difference values;

[0173] Calculating the differences in link losses between the Y leaky cables and the fourth leaky cable respectively to obtain Y third differences, wherein the first leaky cable and the second leaky cable are two leaky cables with the smallest difference in link losses among the N leaky cables;

[0174] Selecting the largest target difference among the Y second differences and the Y third differences;

[0175] A target leaky cable among the Y leaky cables is determined to be an unqualified leaky cable, wherein a difference in link loss between the target leaky cable and the third leaky cable or a difference in link loss between the target leaky cable and the fourth leaky cable is the maximum target difference.

[0176] Optionally, the processor 601 is specifically configured to:

[0177] When the distances between the N half-wave dipoles and the N leaky cables are all the first distances, respectively obtaining M power levels received by each half-wave dipole and a power level of a signal source at an input end of each leaky cable;

[0178] According to the ratio of the M power levels received by each half-wave dipole to the power level of the signal source at the input end of each leaky cable, the M link losses of each leaky cable among the N leaky cables are obtained.

[0179] Optionally, the M power levels are obtained by placing the half-wave dipole on a mobile carrier and maintaining a relative distance between the mobile carrier and the leaky cable at a first distance, by the mobile carrier adopting a target movement test mode in different preset time periods, and the half-wave dipole adopting a target signal receiving mode in the different preset time periods, the target movement mode is one of a first movement test mode and a second movement test mode, the first movement test mode is a uniform speed movement test of the mobile carrier, the second movement mode is a test in which the mobile carrier moves to a preset position, the target signal receiving mode is one of a first signal receiving mode and a second signal receiving mode, the first signal receiving mode is that the half-wave dipole receives the signal of the leaky cable at multiple preset positions in a preset time period, and the second signal receiving mode is that the half-wave dipole continuously receives the signal of the leaky cable in a preset time period.

[0180] The communication bus 604 mentioned in the above electronic device can be a peripheral component interconnect (PCT) bus or an extended industry standard architecture (EISA) bus, etc. The communication bus 604 can be divided into an address bus, a data bus, a control bus, etc. For ease of identification, only one thick line is used in the figure, but it does not mean that there is only one bus or one data type.

[0181] The communication interface 602 is used for communication between the terminal and other devices.

[0182] The memory 603 may include a random access memory (RAM) or a non-volatile memory (non-volatile memory), such as at least one disk storage. Optionally, the memory 603 may also be at least one storage device located away from the aforementioned processor 601. The aforementioned processor 601 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0183] The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the above-mentioned leaky cable performance evaluation method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. The computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0184] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0185] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0186] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A method for evaluating performance of a leaky cable, characterized in that: The method comprises: Obtaining the link loss of each leaky cable among N leaky cables, where N is an integer greater than 1; Calculating the difference in link loss between every two leaky cables among the N leaky cables; evaluating the performance of the N leaky cables according to the difference in link loss between every two leaky cables among the N leaky cables; The obtaining of the link loss of each leaky cable among the N leaky cables includes: Obtaining M link losses of each of the N leaky cables, where M is an integer greater than or equal to 1; The respectively calculating the difference in link loss between every two leaky cables among the N leaky cables comprises: Calculating the difference of M link losses between every two leaky cables in the N leaky cables respectively, and obtaining M difference values ​​corresponding to every two leaky cables in the N leaky cables; The step of evaluating the performance of the N leaky cables according to the difference in link loss between every two leaky cables among the N leaky cables comprises: evaluating the performance of the N leaky cables according to M differences corresponding to every two leaky cables among the N leaky cables; The step of evaluating the performance of the N leaky cables according to the M differences corresponding to every two leaky cables among the N leaky cables includes: Selecting the first difference value corresponding to each two leaky cables from the M difference values ​​corresponding to each two leaky cables in the N leaky cables, wherein the first difference value corresponding to each two leaky cables is the Kth difference value among the M difference values ​​corresponding to the two leaky cables arranged from small to large, and K is determined according to the signal transmission percentage of the leaky cable; The performance of the N leaky cables is evaluated according to the first difference value corresponding to every two leaky cables among the N leaky cables.

2. The leaky cable performance evaluation method according to claim 1, characterized in that: The N leaky cables include a first leaky cable and a second leaky cable; The step of evaluating the performance of the N leaky cables according to the difference in link loss between every two leaky cables among the N leaky cables comprises: When the difference between the link losses of the first leaky cable and the second leaky cable is less than or equal to a target value, evaluating whether the difference between the first leaky cable and the second leaky cable meets the target requirement; In the case where the difference in link loss between the first leaky cable and the second leaky cable is greater than a target value, it is assessed that the difference between the first leaky cable and the second leaky cable does not meet the target requirement.

3. The leaky cable performance evaluation method according to claim 2, characterized in that: The method further comprises: Acquire Y leaky cables from the N leaky cables, wherein a difference in link loss between every two leaky cables from the Y leaky cables is greater than the target value; Calculating the differences in link losses between the Y leaky cables and the third leaky cable respectively to obtain Y second difference values; Calculating the differences in link losses between the Y leaky cables and the fourth leaky cable respectively to obtain Y third differences, wherein the third leaky cable and the fourth leaky cable are two leaky cables with the smallest difference in link losses among the N leaky cables; Selecting the largest target difference among the Y second differences and the Y third differences; A target leaky cable among the Y leaky cables is determined to be an unqualified leaky cable, wherein a difference in link loss between the target leaky cable and the third leaky cable or a difference in link loss between the target leaky cable and the fourth leaky cable is the maximum target difference.

4. The leaky cable performance evaluation method according to claim 1, characterized in that: The obtaining of M link losses of each of the N leaky cables includes: When the distances between the N half-wave dipoles and the N leaky cables are all the first distances, respectively obtaining M power levels received by each half-wave dipole and a power level of a signal source at an input end of each leaky cable; According to the ratio of the M power levels received by each half-wave dipole to the power level of the signal source at the input end of each leaky cable, the M link losses of each leaky cable among the N leaky cables are obtained.

5. The leaky cable performance evaluation method according to claim 4, characterized in that: The M power levels are obtained by the mobile carrier adopting a target movement test mode in different preset time periods, and the half-wave dipole adopting a target signal receiving mode in different preset time periods, when the half-wave dipole is placed on the mobile carrier and the relative distance between the mobile carrier and the leaky cable is maintained at a first distance. The target movement test mode is one of a first movement test mode and a second movement test mode. The first movement test mode is a test in which the mobile carrier moves at a constant speed. The second movement test mode is a test in which the mobile carrier moves to a preset position. The target signal receiving mode is one of a first signal receiving mode and a second signal receiving mode. The first signal receiving mode is that the half-wave dipole receives the signal of the leaky cable at multiple preset positions in a preset time period. The second signal receiving mode is that the half-wave dipole continuously receives the signal of the leaky cable in a preset time period.

6. A leaky cable performance evaluation device, characterized in that: The device comprises: A first acquisition module is used to acquire the link loss of each leaky cable among N leaky cables, where N is an integer greater than 1; A first calculation module is used to calculate the difference in link loss between every two leaky cables among the N leaky cables; A first evaluation module, configured to evaluate the performance of the N leaky cables according to a difference in link loss between every two leaky cables among the N leaky cables; The first acquisition module includes: A first acquisition unit is used to acquire M link losses of each of the N leaky cables, where M is an integer greater than or equal to 1; The first calculation module includes: A first calculation unit is used to calculate the difference of M link losses between every two leaky cables in the N leaky cables, and obtain M difference values ​​corresponding to every two leaky cables in the N leaky cables; The first evaluation module comprises: A first evaluation unit, configured to evaluate the performance of the N leaky cables according to M differences corresponding to every two leaky cables among the N leaky cables; The first evaluation unit comprises: A first selection subunit is configured to select a first difference value corresponding to each two leaky cables from the M differences corresponding to each two leaky cables in the N leaky cables, wherein the first difference value corresponding to each two leaky cables is the Kth difference value among the M differences corresponding to the two leaky cables arranged from small to large, and K is determined according to the signal transmission percentage of the leaky cable; The first evaluation subunit is configured to evaluate the performance of the N leaky cables according to a first difference value corresponding to every two leaky cables among the N leaky cables.

7. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method for evaluating the performance of a leaky cable according to any one of claims 1 to 5 are implemented.

8. A computer-readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the leaky cable performance evaluation method according to any one of claims 1 to 5 is implemented.

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