CN115765794B - Leaky cable performance evaluation method and device - Google Patents
Leaky cable performance evaluation method and device Download PDFInfo
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Abstract
The application provides a leaky cable performance evaluation method and device, which are applied to the technical field of cable test, wherein the method comprises the following steps: acquiring power received by each signal receiving channel in N signal receiving channels, wherein N is an integer greater than 1, and the signal receiving channels are used for measuring signal power of a leaky cable received by the multi-polarization dipole antenna; respectively calculating the ratio of the power received by each two signal receiving channels in the N signal receiving channels, wherein the two signal receiving channels are in orthogonal polarization; and evaluating the performance of the leaky cable according to the ratio of the power received by each two signal receiving channels in the N signal receiving channels. According to the method, the interference in the signal transmission process of the leaky cable is estimated by calculating the ratio of the power received by each two signal receiving channels in N signal receiving channels with orthogonal polarization, so that the accuracy of the performance estimation method of the leaky cable is improved.
Description
Technical Field
The application relates to the technical field of cable testing, in particular to a leaky cable performance evaluation method and device.
Background
With the development of urban rail transit, the leaky cable has the characteristics of uniform signal coverage, wide frequency band, long service life, high stability and reliability, high compression resistance, high tensile strength and the like, and the use amount of the leaky cable is larger and larger. In the existing leaky cable performance evaluation mode, coupling loss and system loss are commonly used as indexes for evaluating the performance of the leaky cable, but the coupling loss and the system loss can only evaluate the loss in the signal transmission process of the leaky cable, and the interference in the signal transmission process of the leaky cable cannot be evaluated, so that the accuracy of the evaluation method is lower.
Disclosure of Invention
The embodiment of the application provides a leaky cable performance evaluation method and device, which are used for solving the problem of low accuracy of the existing leaky cable performance evaluation method.
In order to solve the technical problems, the application is realized as follows:
In a first aspect, an embodiment of the present invention provides a leaky cable performance evaluation method. The method comprises the following steps:
acquiring power received by each signal receiving channel in N signal receiving channels, wherein N is an integer greater than 1, and the signal receiving channels are used for measuring signal power of a leaky cable received by the multi-polarization dipole antenna;
respectively calculating the ratio of the power received by each two signal receiving channels in the N signal receiving channels, wherein the two signal receiving channels are in orthogonal polarization;
And evaluating the performance of the leaky cable according to the ratio of the power received by each two signal receiving channels in the N signal receiving channels.
Optionally, the acquiring the power received through each of the N signal receiving channels includes:
obtaining M powers received through each of N signal receiving channels, wherein M is an integer greater than or equal to 1;
The calculating of the ratio of the power received by each two signal receiving channels in the N signal receiving channels respectively comprises the following steps of;
Respectively calculating the ratio of M powers received by each two signal receiving channels in the N signal receiving channels to obtain M ratios corresponding to each two signal receiving channels in the N signal receiving channels;
the estimating the performance of the leaky cable according to the ratio of the power received by each two signal receiving channels in the N signal receiving channels comprises:
and evaluating the performance of the leaky cable according to M ratios corresponding to every two signal receiving channels in the N signal receiving channels.
Optionally, the evaluating the performance of the leaky cable according to M ratios corresponding to each two signal receiving channels in the N signal receiving channels includes:
Selecting a target ratio corresponding to each two signal receiving channels from M ratios corresponding to each two signal receiving channels in the N signal receiving channels, wherein the target ratio corresponding to each two signal receiving channels is a K ratio in the arrangement of the M ratios corresponding to each two signal receiving channels from large to small, and K is determined according to the signal transmission percentage of the leaky cable;
and evaluating the performance of the leaky cable according to the target ratio corresponding to each two signal receiving channels in the N signal receiving channels.
Optionally, evaluating the performance of the leaky cable according to the target ratio corresponding to each two signal receiving channels in the N signal receiving channels includes:
selecting the minimum target ratio of the target ratios corresponding to every two signal receiving channels in the N signal receiving channels;
And under the condition that the minimum target ratio is greater than or equal to a preset value, evaluating that the performance of the leaky cable meets the target requirement.
Optionally, the M powers are obtained by continuously receiving the signal of the leaky cable by the multi-polarized dipole antenna when the multi-polarized dipole antenna is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at a first distance, and the mobile carrier is moved to a plurality of preset positions for testing.
Optionally, the M powers are obtained by continuously receiving the signal of the leaky cable by the multi-polarized dipole antenna when the multi-polarized dipole antenna is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at a first distance through the mobile carrier and the test is performed by moving the mobile carrier at a constant speed.
Optionally, when the multi-polarized dipole antenna is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at a first distance, a target movement test mode is adopted by the mobile carrier in different preset time periods, the multi-polarized dipole antenna is obtained in the different preset time periods in a target signal receiving mode, 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 constant movement test of the mobile carrier, the second movement test mode is a test of the mobile carrier moving 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 a dipole of the leaky cable received by the multi-polarized dipole antenna in the preset time periods at a plurality of preset positions, and the second signal receiving mode is a dipole of the leaky cable received by the multi-polarized dipole antenna in the preset time periods.
In a second aspect, the embodiment of the application also provides a leaky cable performance evaluation device. The leaky cable performance evaluation device includes:
The first acquisition module is used for acquiring power received by each signal receiving channel in N signal receiving channels, N is an integer greater than 1, and the signal receiving channels are used for measuring signal power of the leaky cable received by the multi-polarization dipole antenna;
The first calculation module is used for calculating the ratio of the power received by each two signal receiving channels in the N signal receiving channels respectively, and orthogonal polarization is formed between each two signal receiving channels;
And the first evaluation module is used for evaluating the performance of the leaky cable according to the ratio of the power received by each two signal receiving channels in the N signal receiving channels.
Optionally, the first acquisition module includes:
The first acquisition submodule is used for acquiring M powers received through each signal receiving channel in the N signal receiving channels, wherein M is an integer greater than or equal to 1;
The first computing module comprises;
The first calculating sub-module is used for calculating the ratio of M powers received by each two signal receiving channels in the N signal receiving channels respectively to obtain M ratios corresponding to each two signal receiving channels in the N signal receiving channels;
The first evaluation module comprises:
and the first evaluation submodule is used for evaluating the performance of the leaky cable according to M ratios corresponding to every two signal receiving channels in the N signal receiving channels.
Optionally, the first evaluation sub-module includes:
The first selecting unit is used for selecting a target ratio corresponding to each two signal receiving channels from M ratios corresponding to each two signal receiving channels in the N signal receiving channels respectively, wherein the target ratio corresponding to each two signal receiving channels is a K ratio in the arrangement of the M ratios corresponding to each two signal receiving channels from large to small, and K is determined according to the signal transmission percentage of the leaky cable;
and the first evaluation unit is used for evaluating the performance of the leaky cable according to the target ratio corresponding to each two signal receiving channels in the N signal receiving channels.
Optionally, the first evaluation unit comprises:
A first selecting subunit, configured to select a minimum target ratio of target ratios corresponding to every two signal receiving channels in the N signal receiving channels;
and the first evaluation subunit is used for evaluating that the performance of the leaky cable meets the target requirement under the condition that the minimum target ratio is greater than or equal to a preset value.
Optionally, the M powers are obtained by continuously receiving the signal of the leaky cable by the multi-polarized dipole antenna when the multi-polarized dipole antenna is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at a first distance, and the mobile carrier is moved to a plurality of preset positions for testing.
Optionally, the M powers are obtained by continuously receiving the signal of the leaky cable by the multi-polarized dipole antenna when the multi-polarized dipole antenna is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at a first distance through the mobile carrier and the test is performed by moving the mobile carrier at a constant speed.
Optionally, when the multi-polarized dipole antenna is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at a first distance, a target movement test mode is adopted by the mobile carrier in different preset time periods, the multi-polarized dipole antenna is obtained in the different preset time periods in a target signal receiving mode, 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 constant movement test of the mobile carrier, the second movement test mode is a test of the mobile carrier moving 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 a dipole of the leaky cable received by the multi-polarized dipole antenna in the preset time periods at a plurality of preset positions, and the second signal receiving mode is a dipole of the leaky cable received by the multi-polarized dipole antenna in the preset time periods.
In a third aspect, an embodiment of the present application further provides an electronic device, including a processor, a memory, and a computer program stored on the memory and capable of running on the processor, where the computer program when executed by the processor implements the steps of the leaky cable performance evaluation method described above.
In a fourth aspect, embodiments of the present application further provide a computer readable storage medium having a computer program stored thereon, which when executed by a processor, implements the steps of the leaky cable performance evaluation method described above.
According to the leakage cable performance evaluation method, the power received by each signal receiving channel in N signal receiving channels is obtained, N is an integer greater than 1, and the signal receiving channels are used for measuring the signal power of the leakage cable received by the multi-polarization dipole antenna; respectively calculating the ratio of the power received by each two signal receiving channels in the N signal receiving channels, wherein the two signal receiving channels are in orthogonal polarization; and evaluating the performance of the leaky cable according to the ratio of the power received by each two signal receiving channels in the N signal receiving channels. According to the method, the interference in the signal transmission process of the leaky cable is estimated by calculating the ratio of the power received by each two signal receiving channels in N signal receiving channels with orthogonal polarization, so that the accuracy of the performance estimation method of the leaky cable is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a flow chart of a leaky cable performance evaluation method provided by an embodiment of the application;
FIG. 2 is a schematic diagram of a test system in a leaky cable performance evaluation method according to an embodiment of the application;
FIG. 3 is a schematic diagram of a test system in a leaky cable performance evaluation method according to an embodiment of the application;
FIG. 4 is a flow chart of a test system in a leaky cable performance evaluation method provided by an embodiment of the application;
FIG. 5 is a block diagram of a leaky cable performance evaluation apparatus according to a further embodiment of the application;
fig. 6 is a block diagram of an electronic device according to still another embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The embodiment of the application provides a leaky cable performance evaluation method. Referring to fig. 1, fig. 1 is a flowchart of a leaky cable performance evaluation method according to an embodiment of the application, as shown in fig. 1, including the steps of:
Step 101, obtaining power received by each signal receiving channel in N signal receiving channels, wherein N is an integer greater than 1, and the signal receiving channels are used for measuring signal power of a leaky cable received by a multi-polarization dipole antenna;
102, respectively calculating the ratio of the power received by each two signal receiving channels in the N signal receiving channels, wherein the two signal receiving channels are in orthogonal polarization;
And step 103, evaluating the performance of the leaky cable according to the ratio of the power received by each two signal receiving channels in the N signal receiving channels.
In the leaky cable performance evaluation method of the embodiment of the application, referring to fig. 2 and 3, the performance evaluation process of the leaky cable is performed by the test system of fig. 2 and 3. The test system consists of a mobile carrier, a mobile terminal, a multi-channel signal receiving device, a multi-polarized dipole antenna, a distance measuring device, a multi-channel signal transmitting device, a leaky cable and a load, wherein the leaky cable is supported by a nonmetallic support.
The mobile carrier may be a controllable mobile vehicle for placing the test terminal, the multi-channel signal receiving device, the multi-polarized dipole antenna and the distance measuring device. The test terminal can be a notebook or a desktop computer or other displayable terminal products and is used for processing the collected data and giving test results and conclusions; the multi-channel signal receiving device is used for measuring the intensity of signals received by the multi-polarized dipole antenna, and the scanning time of the signal receiving device is far less than the time for the test terminal to collect data, so that the signals received by the signal receiving device in a scanning way can be obtained by the test terminal.
The test antenna is a multi-polarized dipole antenna, the center positions of the multi-polarized dipole antennas are consistent, and the multi-polarized dipole antennas are mutually isolated, so that the mutual influence of a plurality of signal receiving channels is avoided, the cross polarization ratio of the orthogonal directions of signals received by the multi-channel signal receiving device is larger than a preset value, the multi-channel signal receiving device is ensured to accurately measure the signal intensity of a leakage cable received by the multi-polarized dipole antenna, and the accuracy of the whole evaluation process is improved.
The center point of the multi-polarized dipole antenna has the same height as the suspension height of the leaky cable or forms a fixed angle with the horizontal line of the height of the leaky cable, and a certain radial distance is kept between the center point of the multi-polarized dipole antenna and the leaky cable.
The distance measuring device is used for measuring the moving distance of the mobile carrier and transmitting data to the test terminal in a mode of satellite (Gps, beidou or other positioning satellites), laser ranging, wheel ranging and the like. The signal transmitting device is used for transmitting the corresponding frequency signal to be tested.
In the method for evaluating the performance of the leaky cable according to the embodiment of the application, the multi-polarized dipole antenna receives signals in a plurality of polarization directions of the leaky cable, wherein each two signal receiving channels in orthogonal polarization in the multi-channel signal receiving device respectively measure the signals in orthogonal polarization directions of the leaky cable and the signals in cross polarization directions of the leaky cable received by the multi-channel signal receiving device, and then the performance of the leaky cable is evaluated according to the ratio of the powers received by each two signal receiving channels in the N signal receiving channels, because the signals in cross polarization directions are not expected to be generated by the leaky cable in the process of transmitting signals, the signals in main polarization directions can be interfered, and the calculation formula of the signal receiving device can be as follows:
PI is defined as the ratio of the first power received by the first signal receiving channel and the second power received by the second signal receiving channel, where the multiple signal receiving devices are orthogonally polarized, and may be the difference between the first level received by the first signal receiving channel and the second level received by the second signal receiving channel through unit conversion. Specifically, the PI may be as follows:
P 1 is the first power in W;
p 2 is the second power in W;
E 1 is a first level in dB;
E 2 is a first level in dB;
According to the method, the interference in the signal transmission process of the leaky cable is estimated by calculating the ratio of the power received by each two signal receiving channels in N signal receiving channels with orthogonal polarization, so that the accuracy of the performance estimation method of the leaky cable is improved.
Optionally, the acquiring the power received through each of the N signal receiving channels includes:
obtaining M powers received through each of N signal receiving channels, wherein M is an integer greater than or equal to 1;
The calculating of the ratio of the power received by each two signal receiving channels in the N signal receiving channels respectively comprises the following steps of;
Respectively calculating the ratio of M powers received by each two signal receiving channels in the N signal receiving channels to obtain M ratios corresponding to each two signal receiving channels in the N signal receiving channels;
the estimating the performance of the leaky cable according to the ratio of the power received by each two signal receiving channels in the N signal receiving channels comprises:
and evaluating the performance of the leaky cable according to M ratios corresponding to every two signal receiving channels in the N signal receiving channels.
In the method for evaluating the performance of the leaky cable according to the embodiment of the application, the multi-polarized dipole antenna and the multi-channel signal receiving device are placed on the mobile carrier, and the multi-polarized dipole antenna has various signal receiving modes through different mobile carrier mobile test modes, so that N signal receiving channels of the multi-channel signal receiving device can respectively receive M powers at different moments or different positions.
The calculation formula of the instantaneous PI i at the i-th time or i-th position is as follows:
PIi＝|E1i-E2i|
e 1i is a first level received by the first signal receiving channel at the ith moment or the ith position, and the unit is dB;
E 2i is a second level received by the second signal receiving channel at the ith moment or the ith position, and the unit is dB;
According to the method, the ratio of M powers of each two signal receiving channels is obtained through the test system, the performance of the leaky cable is estimated by the N ratios corresponding to each two signal receiving channels in the N signal receiving channels, errors caused by a single ratio can be reduced, and the accuracy of the performance estimation method of the leaky cable is improved.
Optionally, the evaluating the performance of the leaky cable according to M ratios corresponding to each two signal receiving channels in the N signal receiving channels includes:
Selecting a target ratio corresponding to each two signal receiving channels from M ratios corresponding to each two signal receiving channels in the N signal receiving channels, wherein the target ratio corresponding to each two signal receiving channels is a K ratio in the arrangement of the M ratios corresponding to each two signal receiving channels from large to small, and K is determined according to the signal transmission percentage of the leaky cable;
and evaluating the performance of the leaky cable according to the target ratio corresponding to each two signal receiving channels in the N signal receiving channels.
In the method for evaluating the performance of the leaky cable according to the embodiment of the application, some test data may not be used, after the test terminal arranges the calculated M ratios of every two signal receiving channels in order from large to small, the test terminal 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 ratios, the 100 ratios are arranged in order from large to small, and the 95 th ratio is selected as a target ratio, so that the error of the evaluation method can be reduced.
Optionally, evaluating the performance of the leaky cable according to the target ratio corresponding to each two signal receiving channels in the N signal receiving channels includes:
selecting the minimum target ratio of the target ratios corresponding to every two signal receiving channels in the N signal receiving channels;
And under the condition that the minimum target ratio is greater than or equal to a preset value, evaluating that the performance of the leaky cable meets the target requirement.
In the leakage cable performance evaluation method of the embodiment of the application, a preset value is firstly set in the process of calculating the target ratio corresponding to each two signal receiving channels in N signal receiving channels, the minimum target ratio in the target ratios corresponding to each two signal receiving channels in N signal receiving channels is selected, and under the condition that the minimum target ratio is greater than or equal to the preset value, the situation that signals generated in the cross polarization direction are fewer and the interference is smaller is indicated, and the performance of the leakage cable is evaluated to meet the target requirement; and under the condition that the minimum target ratio is smaller than a preset value, the signals generated in the cross polarization direction are more, the interference is larger, and the performance of the leaky cable is evaluated to be inconsistent with the target requirement.
Referring to fig. 4, the test system collects ratio data corresponding to each two signal receiving channels in the N signal receiving channels in different manners, when the sampled data reach the requirement or reach a certain time period, the data collection is finished, the ratio and the preset value are judged, the performance of the leaky cable is evaluated to meet the target requirement under the condition that the minimum target ratio is greater than or equal to the preset value, and the performance of the leaky cable is evaluated to be not met to the target requirement under the condition that the minimum target ratio is smaller than the preset value.
According to the embodiment of the application, the preset value is set according to the actual signal transmission requirement, and the performance of the leaky cable is evaluated by taking the preset value as a measurement standard, so that the accuracy of the performance evaluation method of the leaky cable is improved.
In the method for evaluating the performance of the leaky cable according to the embodiment of the following application, there are various signal receiving manners of the leaky cable by the multi-polarized dipole antenna, and since the multi-polarized dipole is placed on the mobile carrier, the signal receiving manner can be realized by controlling the movement of the mobile carrier. The manner in which the movement of the moving carrier is controlled may be demonstrated by a logical control relationship:
D j is the distance of the j-th moving carrier position triggering running, the unit is m, when j=0, the moving carrier moves at a constant speed for testing, and the multi-polarization dipole antenna continuously receives the signal of the leaky cable; v j is the speed of the jth moving carrier in the constant speed moving test, the unit is m/s, when j=0, the multi-polarized dipole antenna receives the signal of the leaky cable at the preset position, and d j and v j cannot be the same j value; t j is the time used for the constant speed movement test of the jth moving carrier, and the unit is s; t jn is the time used for the constant speed movement test of the mobile carrier at the preset position after the jth movement at the nth preset position, and the unit is s; Δx is the initial position of the moving carrier in m.
Optionally, the M powers are obtained by continuously receiving the signal of the leaky cable by the multi-polarized dipole antenna when the multi-polarized dipole antenna is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at a first distance, and the mobile carrier is moved to a plurality of preset positions for testing.
The mobile carrier control method in the embodiment of the application is that when j=0, n+.0, the mobile carrier is tested at a plurality of preset positions, which may be, for example, positions 5m, 10m, and 15m from the initial position of the mobile carrier; when t on is equal to 0, the multi-polarized dipole antenna continuously receives signals of the leaky cable at a plurality of preset positions respectively.
In the leakage cable performance evaluation method provided by the embodiment of the application, the multi-polarized dipole antenna receives M signals of the leakage cable in a plurality of polarization directions at a plurality of preset positions through the movement of the movable carrier, and the test terminal calculates the power ratio of each two signal receiving channels through the M signals received by the multi-polarized dipole antenna, so that the evaluated data are more various, and the accuracy of the evaluation method is improved.
Optionally, the M powers are obtained by continuously receiving the signal of the leaky cable by the multi-polarized dipole antenna when the multi-polarized dipole antenna is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at a first distance through the mobile carrier and the test is performed by moving the mobile carrier at a constant speed.
In the leakage cable performance evaluation method of the embodiment of the application, when j is not equal to 0 and n=0, the mobile carrier moves at a constant speed under the condition that the multi-polarized dipole antenna is placed on the mobile carrier and the relative distance between the mobile carrier and the leakage cable is kept at a first distance; when d j＝0,vj≠0,tj is not equal to 0, the multi-polarized dipole antenna continuously receives the signal of the leaky cable when the movable carrier moves at a constant speed.
In the leakage cable performance evaluation method provided by the embodiment of the application, the multi-polarization dipole antenna continuously receives M signals in a plurality of polarization directions of the leakage cable under the condition that the mobile carrier moves at a uniform speed, and the test terminal calculates the power ratio of each two signal receiving channels through the M signals received by the multi-polarization dipole antenna, so that the evaluated data is more various, and the accuracy of the evaluation method is improved.
Optionally, when the multi-polarized dipole antenna is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at a first distance, a target movement test mode is adopted by the mobile carrier in different preset time periods, the multi-polarized dipole antenna is obtained in the different preset time periods in a target signal receiving mode, 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 constant movement test of the mobile carrier, the second movement test mode is a test of the mobile carrier moving 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 a dipole of the leaky cable received by the multi-polarized dipole antenna in the preset time periods at a plurality of preset positions, and the second signal receiving mode is a dipole of the leaky cable received by the multi-polarized dipole antenna in the preset time periods.
In the leaky cable performance evaluation method according to the embodiment of the application, when the multi-polarized dipole antenna is placed on the mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at the first distance:
When j is not equal to 0 and n is not equal to 0, the moving carrier moves at a constant speed for testing; when d j≠0,vj＝0,tj =0, the multi-polarized dipole antenna receives the signal of the leaky cable when the mobile carrier moves to a preset position at a constant speed:
When j is not equal to 0 and n is not equal to 0, the moving carrier moves at a constant speed for testing; when d j≠0,vj≠0,tj is not equal to 0, the multi-polarized dipole antenna adopts different signal receiving modes in different preset time periods, and when j=3 and d 1≠0,v2≠0,t2≠0,d3 is not equal to 0, the signal receiving is divided into 3 stages, and the 1 st stage is that the multi-polarized dipole antenna receives signals when moving to a preset position through the moving carrier, and the moving carrier moves at a distance interval d1 at the moment; the 2 nd stage is that the multi-polarized dipole antenna continuously receives signals in a preset time period, the speed of the moving carrier is v 2, and the test time is t 2; the 3 rd stage is that the multi-polarized dipole antenna receives a signal by moving the moving carrier to a preset position, and the distance interval of the moving carrier is d2:
When j is not equal to 0 and n is not equal to 0, the mobile carrier adopts a plurality of mobile test modes, a constant-speed mobile test is adopted in one preset time period, and the mobile carrier moves to a preset position for test in the other preset time period; when d j≠0,vj≠0,tj≠0,tjn is not equal to 0, the multi-polarization dipole antenna adopts various signal receiving modes, the signal of the leaky cable is received at a plurality of preset positions in one preset time period, and the signal of the leaky cable is continuously received in the other preset time period. For example, when j=3, n=1, v 1≠0,t1≠0,d2≠0,t21≠0,d3 +.0, the current signal reception is divided into 4 phases, the first phase is to move the test at a constant speed v1 during the period t1, and the multi-polarized dipole antenna continuously receives the signal of the leaky cable during the period t 1; the second stage is that the mobile carrier still runs at a constant speed v1, the moving distance interval is d2, and the multi-polarized dipole antenna receives the signal of the leaky cable when the mobile carrier moves to a plurality of preset positions in the distance interval; the third stage is that in the t2 time period, when the mobile carrier moves to the preset position, the multi-polarized dipole antenna continuously receives the signal of the leaky cable at the preset position; the fourth stage is to test the moving carrier moving at a constant speed in the distance interval of d3, and the multi-polarized dipole antenna receives the signal of the leaky cable when the moving carrier moves to the preset position at a constant speed.
In the method, the mobile carrier is tested in a plurality of mobile modes, and the multi-polarized dipole antenna receives signals of the leaky cable in a plurality of receiving modes, so that the data source of the leaky cable evaluating method is more comprehensive, and the accuracy of the evaluating method is improved.
Referring to fig. 5, fig. 5 is a block diagram of a leaky cable performance evaluation device according to still another embodiment of the application.
As shown in fig. 5, the leaky cable performance evaluation device 500 includes:
A first obtaining module 501, configured to obtain power received through each of N signal receiving channels, where N is an integer greater than 1, where the signal receiving channels are configured to measure signal power of a leaky cable received by a multi-polarized dipole antenna;
A first calculating module 502, configured to calculate a ratio of powers received by each two signal receiving channels in the N signal receiving channels, where each two signal receiving channels are orthogonally polarized;
A first evaluation module 503, configured to evaluate the performance of the leaky cable according to a ratio of powers received by each two signal receiving channels of the N signal receiving channels.
Optionally, the first acquisition module includes:
The first acquisition submodule is used for acquiring M powers received through each signal receiving channel in the N signal receiving channels, wherein M is an integer greater than or equal to 1;
The first computing module comprises;
The first calculating sub-module is used for calculating the ratio of M powers received by each two signal receiving channels in the N signal receiving channels respectively to obtain M ratios corresponding to each two signal receiving channels in the N signal receiving channels;
The first evaluation module comprises:
and the first evaluation submodule is used for evaluating the performance of the leaky cable according to M ratios corresponding to every two signal receiving channels in the N signal receiving channels.
Optionally, the first evaluation sub-module includes:
The first selecting unit is used for selecting a target ratio corresponding to each two signal receiving channels from M ratios corresponding to each two signal receiving channels in the N signal receiving channels respectively, wherein the target ratio corresponding to each two signal receiving channels is a K ratio in the arrangement of the M ratios corresponding to each two signal receiving channels from large to small, and K is determined according to the signal transmission percentage of the leaky cable;
and the first evaluation unit is used for evaluating the performance of the leaky cable according to the target ratio corresponding to each two signal receiving channels in the N signal receiving channels.
Optionally, the first evaluation unit comprises:
A first selecting subunit, configured to select a minimum target ratio of target ratios corresponding to every two signal receiving channels in the N signal receiving channels;
and the first evaluation subunit is used for evaluating that the performance of the leaky cable meets the target requirement under the condition that the minimum target ratio is greater than or equal to a preset value.
Optionally, the M powers are obtained by continuously receiving the signal of the leaky cable by the multi-polarized dipole antenna when the multi-polarized dipole antenna is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at a first distance, and the mobile carrier is moved to a plurality of preset positions for testing.
Optionally, the M powers are obtained by continuously receiving the signal of the leaky cable by the multi-polarized dipole antenna when the multi-polarized dipole antenna is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at a first distance through the mobile carrier and the test is performed by moving the mobile carrier at a constant speed.
Optionally, when the multi-polarized dipole antenna is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at a first distance, a target movement test mode is adopted by the mobile carrier in different preset time periods, the multi-polarized dipole antenna is obtained in the different preset time periods in a target signal receiving mode, 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 constant movement test of the mobile carrier, the second movement test mode is a test of the mobile carrier moving 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 a dipole of the leaky cable received by the multi-polarized dipole antenna in the preset time periods at a plurality of preset positions, and the second signal receiving mode is a dipole of the leaky cable received by the multi-polarized dipole antenna in the preset time periods.
Referring to fig. 6, fig. 6 is a block diagram of an electronic device according to still another embodiment of the present application, and as shown in fig. 6, the electronic device includes: processor 601, communication interface 602, communication bus 604 and memory 603, wherein processor 601, communication interface 602 and memory 603 accomplish mutual interaction through communication bus 604.
Wherein the memory 603 is used for storing a computer program; a processor 601 for executing a program stored on a memory 603, which computer program, when executed by the processor 601: the signal receiving channels are used for measuring the signal power of the leaky cable received by the multi-polarization dipole antenna;
respectively calculating the ratio of the power received by each two signal receiving channels in the N signal receiving channels, wherein the two signal receiving channels are in orthogonal polarization;
And evaluating the performance of the leaky cable according to the ratio of the power received by each two signal receiving channels in the N signal receiving channels.
Optionally, the processor 601 is specifically configured to:
obtaining M powers received through each of N signal receiving channels, wherein M is an integer greater than or equal to 1;
a processor 601, in particular for;
Respectively calculating the ratio of M powers received by each two signal receiving channels in the N signal receiving channels to obtain M ratios corresponding to each two signal receiving channels in the N signal receiving channels;
the processor 601 is specifically configured to:
and evaluating the performance of the leaky cable according to M ratios corresponding to every two signal receiving channels in the N signal receiving channels.
Optionally, the processor 601 is specifically configured to:
Selecting a target ratio corresponding to each two signal receiving channels from M ratios corresponding to each two signal receiving channels in the N signal receiving channels, wherein the target ratio corresponding to each two signal receiving channels is a K ratio in the arrangement of the M ratios corresponding to each two signal receiving channels from large to small, and K is determined according to the signal transmission percentage of the leaky cable;
and evaluating the performance of the leaky cable according to the target ratio corresponding to each two signal receiving channels in the N signal receiving channels.
Optionally, the processor 601 is specifically configured to:
selecting the minimum target ratio of the target ratios corresponding to every two signal receiving channels in the N signal receiving channels;
And under the condition that the minimum target ratio is greater than or equal to a preset value, evaluating that the performance of the leaky cable meets the target requirement.
Optionally, the M powers are obtained by continuously receiving the signal of the leaky cable by the multi-polarized dipole antenna when the multi-polarized dipole antenna is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at a first distance, and the mobile carrier is moved to a plurality of preset positions for testing.
Optionally, the M powers are obtained by continuously receiving the signal of the leaky cable by the multi-polarized dipole antenna when the multi-polarized dipole antenna is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at a first distance through the mobile carrier and the test is performed by moving the mobile carrier at a constant speed.
Optionally, when the multi-polarized dipole antenna is placed on a mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept at a first distance, a target movement test mode is adopted by the mobile carrier in different preset time periods, the multi-polarized dipole antenna is obtained in the different preset time periods in a target signal receiving mode, 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 constant movement test of the mobile carrier, the second movement test mode is a test of the mobile carrier moving 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 a dipole of the leaky cable received by the multi-polarized dipole antenna in the preset time periods at a plurality of preset positions, and the second signal receiving mode is a dipole of the leaky cable received by the multi-polarized dipole antenna in the preset time periods.
The communication bus 604 referred to above for the electronic devices may be an external device interconnect standard (PERIPHERAL COMPONENT INTERCONNECT, PCT) bus or a broad industry standard architecture (Extended Industry Standard Architecture, EISA) bus, or the like. The communication bus 604 may be divided into an address bus, a data bus, a control bus, and the like. For ease of identification, the drawing is shown with only one bold line, but does not show only one bus or one data type.
The communication interface 602 is used for communication between the above-described terminal and other devices.
The memory 603 may include random access memory (Random Access Memory, RAM) or may include non-volatile memory (non-volatile memory), such as at least one disk memory. Optionally, the memory 603 may also be at least one storage device located remotely from the processor 601. The processor 601 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; but may also be a digital signal processor (DIGITAL SIGNAL Processing, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components.
The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements each process of the above-mentioned leaky cable performance evaluation method embodiment, and can achieve the same technical effects, and in order to avoid repetition, the description is omitted here. The computer readable storage medium is, for example, a Read-Only Memory (ROM), a random access Memory (Random Access Memory RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
Claims (10)
1. A leaky cable performance evaluation method, said method comprising:
acquiring power received by each signal receiving channel in N signal receiving channels, wherein N is an integer greater than 1, and the signal receiving channels are used for measuring signal power of a leaky cable received by the multi-polarization dipole antenna;
respectively calculating the ratio of the power received by each two signal receiving channels in the N signal receiving channels, wherein the two signal receiving channels are in orthogonal polarization;
And evaluating the performance of the leaky cable according to the ratio of the power received by each two signal receiving channels in the N signal receiving channels.
2. The leaky cable performance evaluation method according to claim 1, wherein the acquiring power received through each of the N signal receiving channels comprises:
obtaining M powers received through each of N signal receiving channels, wherein M is an integer greater than or equal to 1;
The calculating of the ratio of the power received by each two signal receiving channels in the N signal receiving channels respectively comprises the following steps of;
Respectively calculating the ratio of M powers received by each two signal receiving channels in the N signal receiving channels to obtain M ratios corresponding to each two signal receiving channels in the N signal receiving channels;
the estimating the performance of the leaky cable according to the ratio of the power received by each two signal receiving channels in the N signal receiving channels comprises:
and evaluating the performance of the leaky cable according to M ratios corresponding to every two signal receiving channels in the N signal receiving channels.
3. The method for evaluating the performance of a leaky cable according to claim 2, wherein said evaluating the performance of the leaky cable according to M ratios corresponding to every two signal receiving channels of said N signal receiving channels comprises:
Selecting a target ratio corresponding to each two signal receiving channels from M ratios corresponding to each two signal receiving channels in the N signal receiving channels, wherein the target ratio corresponding to each two signal receiving channels is a K ratio in the arrangement of the M ratios corresponding to each two signal receiving channels from large to small, and K is determined according to the signal transmission percentage of the leaky cable;
and evaluating the performance of the leaky cable according to the target ratio corresponding to each two signal receiving channels in the N signal receiving channels.
4. The method of evaluating the performance of a leaky cable according to claim 3, wherein evaluating the performance of the leaky cable according to a target ratio value corresponding to each two signal receiving channels of the N signal receiving channels comprises:
selecting the minimum target ratio of the target ratios corresponding to every two signal receiving channels in the N signal receiving channels;
And under the condition that the minimum target ratio is greater than or equal to a preset value, evaluating that the performance of the leaky cable meets the target requirement.
5. The method according to claim 2, wherein the M powers are obtained by continuously receiving signals of the leaky cable when the multi-polarized dipole antenna is tested by moving the mobile carrier to a plurality of preset positions with the multi-polarized dipole antenna placed on the mobile carrier and the relative distance of the mobile carrier and the leaky cable kept at a first distance.
6. The method according to claim 2, wherein the M powers are obtained by continuously receiving signals of the leaky cable when the multi-polarized dipole antenna is placed on a moving carrier and a relative distance between the moving carrier and the leaky cable is kept at a first distance, and the test is performed by moving the moving carrier at a constant speed.
7. The method according to claim 2, wherein the M powers are obtained by using a target movement test mode by the mobile carrier in different preset time periods when the multi-polarized dipole antenna is placed on the mobile carrier and the relative distance between the mobile carrier and the leaky cable is kept 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 one of a first signal reception mode and a second signal reception mode, the first signal reception mode is one of a second signal reception mode, the multi-polarized dipole antenna receives signals of the cable in a plurality of leaky positions in the preset time period, and the second signal reception mode is one of a first signal reception mode and a second signal reception mode, the signal reception mode is one of a signal reception mode, the signal reception mode of the multi-polarized dipole antenna receives signals of the leaky cable in the preset time period, and the continuous signal reception mode of the multi-polarized dipole antenna in the preset time period.
8. A leaky cable performance evaluation device, comprising:
The first acquisition module is used for acquiring power received by each signal receiving channel in N signal receiving channels, N is an integer greater than 1, and the signal receiving channels are used for measuring signal power of the leaky cable received by the multi-polarization dipole antenna;
The first calculation module is used for calculating the ratio of the power received by each two signal receiving channels in the N signal receiving channels respectively, and orthogonal polarization is formed between each two signal receiving channels;
And the first evaluation module is used for evaluating the performance of the leaky cable according to the ratio of the power received by each two signal receiving channels in the N signal receiving channels.
9. An electronic device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the leaky cable performance evaluation method as claimed in any one of claims 1 to 7.
10. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the leaky cable performance evaluation method as claimed in any one of claims 1 to 7.
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| CN103716098A (en) * | 2013-11-15 | 2014-04-09 | 上海新干通通信设备有限公司 | Leaky cable detection device and system |
| CN105486977A (en) * | 2015-11-24 | 2016-04-13 | 北京交控科技股份有限公司 | Fault detection system and method for leaky cables |
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| JP6928509B2 (en) * | 2017-08-26 | 2021-09-01 | 日本放送協会 | Power measuring device |
| CN108982970A (en) * | 2018-04-27 | 2018-12-11 | 广州杰赛科技股份有限公司 | Multi-system access platform leaks detection method, device and the leakage cable detection system of cable |
| CN112578214B (en) * | 2020-12-24 | 2022-10-18 | Oppo广东移动通信有限公司 | Power amplifier test method, device and system and electronic equipment |
| CN112730983B (en) * | 2021-01-15 | 2024-04-12 | 焦作铁路电缆有限责任公司 | Test method for leaky coaxial cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103716098A (en) * | 2013-11-15 | 2014-04-09 | 上海新干通通信设备有限公司 | Leaky cable detection device and system |
| CN105486977A (en) * | 2015-11-24 | 2016-04-13 | 北京交控科技股份有限公司 | Fault detection system and method for leaky cables |
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