CN117706255B - Coaxial cable testing method, device and system - Google Patents
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Abstract
The invention relates to the field of detection, in particular to a coaxial cable testing method, a coaxial cable testing device and a coaxial cable testing system, wherein the coaxial cable testing method comprises the steps of performing full-band testing at an initial acquisition frequency; after the current acquisition frequency is increased by a set amplitude, a new round of test is performed in a preset frequency band interval; generating a fitting data curve; comparing the deviation of the test data of the test of the round with the fitted data curve, and identifying the first data; repeating the steps until the test of the preset number of wheels is completed; screening out all first data corresponding to the set frequency, determining extremum data from the first data, and outputting the extremum data; in the application, repeated testing of the coaxial cable is realized, the collection frequency of the testing can be increased after the testing is finished once, the accuracy of the testing result is guaranteed, besides, the testing of other rounds only tests the frequency band of interest preset by the user except the first round of testing, and the pertinence and the efficiency of the testing are improved.
Description
Technical Field
The present invention relates to the field of detection, and in particular, to a method, an apparatus, and a system for testing a coaxial cable.
Background
Signal detection is needed before the coaxial cable leaves the factory, including attenuation test, impedance test, return loss test, etc., and the maximum value of the interested region is needed to be output in the test process to evaluate whether the coaxial cable meets the requirement;
the existing coaxial cable testing method generally adopts two modes, namely, the processing capacity of the testing equipment is utilized to output the testing result (the function of the testing equipment) under the single scanning point number (the sampling point number in unit time, namely, the frequency); the second mode is to change the number of scanning points to carry out repeated tests in multiple rounds, the result of each round is output independently, and the most value of the tests in multiple rounds is taken; the first mode is the simplest, but is too rough and has insufficient accuracy, the second mode is more accurate, but each test is a full-frequency test, and a large amount of useless data can be generated without pertinence.
Therefore, the existing coaxial cable testing method has the problem that the testing accuracy and the testing efficiency cannot be simultaneously achieved.
Disclosure of Invention
Accordingly, it is desirable to provide a method, apparatus and system for testing coaxial cable to address the above-mentioned problems.
The embodiment of the invention is realized in such a way that a coaxial cable testing method is applied to computer equipment, and the method comprises the following steps:
s1: after communicating with the test equipment, starting the test;
s2: taking a preset initial acquisition frequency as a current acquisition frequency, and performing full-band test by using the current acquisition frequency;
s3: after the current acquisition frequency is increased by a set amplitude, a new round of test is performed in a preset frequency band interval;
s4: generating a fitting data curve according to the test data of each round of test;
s5: comparing the deviation of test data of the current round of test and the fitted data curve, and marking the test data with the deviation larger than the set deviation as first data;
s6: repeating the steps S3 to S5 until the test of the preset number of rounds is completed;
s7: screening out all first data corresponding to the set frequency, determining extremum data from the first data, and outputting the extremum data.
In one embodiment, the invention provides a coaxial cable testing device, and a module of the coaxial cable testing device is used for executing the steps of a coaxial cable testing method, and the method specifically comprises the following steps:
the communication module is used for starting the test after communicating with the test equipment;
the first processing module is used for taking a preset initial acquisition frequency as a current acquisition frequency and carrying out full-band test by using the current acquisition frequency;
the second processing module is used for performing a new round of test in a preset frequency band interval after the current acquisition frequency is increased by a set amplitude;
the third processing module is used for generating a fitting data curve according to the test data of each round of test;
the fourth processing module is used for comparing the deviation between the test data of the current round of test and the fitted data curve and marking the test data with the deviation larger than the set deviation as first data;
the repeating module is used for repeatedly executing the steps S3 to S5 until the test of the preset number of rounds is completed;
and the output module is used for screening out all the first data corresponding to the set frequency, determining extremum data from the first data and outputting the extremum data.
In one embodiment, the present invention provides a coaxial cable testing system, the system comprising:
the testing equipment is used for testing the coaxial cable; and
and the computer equipment is connected with the testing equipment and is used for executing the coaxial cable testing method.
The invention provides a coaxial cable testing method, a device and a system, wherein the method comprises the steps of starting testing after communication with testing equipment; taking a preset initial acquisition frequency as a current acquisition frequency, and performing full-band test by using the current acquisition frequency; after the current acquisition frequency is increased by a set amplitude, a new round of test is performed in a preset frequency band interval; generating a fitting data curve according to the test data of each round of test; comparing the deviation of test data of the current round of test and the fitted data curve, and marking the test data with the deviation larger than the set deviation as first data; repeating the steps until the test of the preset number of wheels is completed; screening out all first data corresponding to the set frequency, determining extremum data from the first data, and outputting the extremum data; in the application, repeated testing of the coaxial cable is realized, the acquisition frequency of the testing can be improved after each test is finished, the accuracy of the testing result is ensured, moreover, other rounds of testing except the first round of testing only test the frequency band of interest preset by the user, namely, full-frequency-band testing is not required to be carried out in each test, the pertinence and the efficiency of the testing are improved, and the generation of useless data is reduced.
Drawings
FIG. 1 is a first flow chart of a method of testing a coaxial cable provided in one embodiment;
FIG. 2 is a second flow chart of a coaxial cable testing method provided in one embodiment;
FIG. 3 is a test environment diagram of a coaxial cable test method provided in one embodiment;
FIG. 4 is a diagram of a data processing interface in a coaxial cable testing method provided in one embodiment;
fig. 5 is a block flow diagram of a coaxial cable testing device provided in one embodiment;
FIG. 6 is a schematic diagram of the components of a coaxial cable testing system provided in one embodiment;
FIG. 7 is a block diagram of the internal architecture of a computer device in one embodiment.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that the terms "first," "second," and the like, as used herein, may be used to describe various elements, but these elements are not limited by these terms unless otherwise specified. These terms are only used to distinguish one element from another element. For example, a first xx script may be referred to as a second xx script, and similarly, a second xx script may be referred to as a first xx script, without departing from the scope of this disclosure.
As shown in fig. 1-2, in one embodiment, a coaxial cable testing method is provided and applied to a computer device, the method includes:
s1: after communicating with the test equipment, starting the test;
s2: taking a preset initial acquisition frequency as a current acquisition frequency, and performing full-band test by using the current acquisition frequency;
s3: after the current acquisition frequency is increased by a set amplitude, a new round of test is performed in a preset frequency band interval;
s4: generating a fitting data curve according to the test data of each round of test;
s5: comparing the deviation of test data of the current round of test and the fitted data curve, and marking the test data with the deviation larger than the set deviation as first data;
s6: repeating the steps S3 to S5 until the test of the preset number of rounds is completed;
s7: screening out all first data corresponding to the set frequency, determining extremum data from the first data, and outputting the extremum data.
In this embodiment, the computer device may be an independent physical server or terminal, or may be a server cluster formed by a plurality of physical servers, or may be a cloud server that provides basic cloud computing services such as a cloud server, a cloud database, cloud storage, and a CDN; the testing device is a vector network analyzer, the computer device is connected with a communication port of the vector network analyzer, a testing end of the vector network analyzer is connected with a coaxial cable, and the vector network analyzer is operated through the computer device and built-in software; before the coaxial cable is connected with the instrument, the inner conductor core wire and the outer shielding layer of the cable are respectively and temporarily contacted with the ground; ensuring proper grounding of the instrument to prevent static charge accumulation; as shown in fig. 3, during testing, a tester needs to wear the wrist strap and the foot strap, the wrist strap is connected with the table mat to form grounding, and the foot strap is connected with the ground mat to form grounding, so that static electricity is prevented from accumulating and releasing on the tester.
In this embodiment, the detection required to be performed before the coaxial cable leaves the factory includes attenuation test, impedance test, return loss test, and the like; the full-frequency-band test is a test performed on the whole frequency band (such as 1 GHz-2 GHz) corresponding to a certain parameter, wherein the preset frequency band interval is a sub-frequency band interval (such as 1.5 GHz-1.8 GHz) in the full-frequency-band range, and the preset frequency band interval is an interval summarized by a user according to historical data and is used for evaluating the extreme value of the coaxial cable, namely, the extreme value is generated in the preset frequency band interval; as shown in fig. 4, the collected data are marked on a preset detection coordinate system, wherein the abscissa of the coordinates is each frequency in the frequency range, and the ordinate is a detection parameter value, such as an attenuation ratio, a signal-to-noise ratio, a return loss, a characteristic impedance, and the like; the acquisition frequency characterizes the acquisition data rate of the test equipment, the test equipment acquires data according to a certain acquisition frequency, so that each acquisition point in the detection coordinate system can be obtained, the interval between every two adjacent acquisition points is consistent, and the interval between the two adjacent acquisition points can be reduced by improving the acquisition frequency;
in this embodiment, extremum is typically used to evaluate whether the coaxial cable meets the requirements; the data on the fitted data curve can be understood as average data, so that the larger the deviation from the fitted data curve is, the more likely the points are extreme values, and therefore, the data are screened out, namely first data, and then the maximum/minimum value is found from the first data, namely the required extreme value data; in addition, the preset number of rounds may be 5 rounds, 8 rounds or other rounds, which is a value according to the accuracy requirement of the user, and is not limited herein;
in the application, repeated testing of the coaxial cable is realized, the acquisition frequency of the testing can be improved after each test is finished, the accuracy of the testing result is ensured, moreover, other rounds of testing except the first round of testing only test the frequency band of interest preset by the user, namely, full-frequency-band testing is not required to be carried out in each test, the pertinence and the efficiency of the testing are improved, and the generation of useless data is reduced.
As a preferred embodiment, the initial acquisition frequency is f 1 The current acquisition frequency is increased by a set amplitude, namely the current acquisition frequency is multiplied by a set multiple, and the method concretely comprises the following steps:
wherein,for the acquisition frequency of the nth round of test, +.>Acquisition frequency for n+1 rounds of test, < >>To set the multiple, n is the number of rounds tested, the initial value of n is 1,/is>The initial acquisition frequency is the initial acquisition frequency.
In the present embodiment of the present invention, in the present embodiment,may be 2, 3 or other positive integer, and is not limited herein; for example, the multiple is set to 2, if the current acquisition frequency is f 2 The acquisition frequency of the new test is f after the set amplitude is increased 3 =2f 2 。
As a preferred embodiment, the generating a fitted data curve from test data of each round of test includes:
screening out the abscissa of the acquisition point corresponding to each round in a preset frequency band interval, and taking the screened-out abscissa as a first abscissa;
for any one first abscissa, determining fitting acquisition points according to the acquisition points of each wheel corresponding to the first abscissa;
and connecting all the fitting acquisition points to obtain a fitting data curve.
The ordinate of the fitting acquisition points is determined by the following formula:
wherein,to fit and collectOrdinate of point,/>The ordinate of the acquisition point for the nth round of testing is n, which is the number of the test rounds.
In this embodiment, for example, if the current test is the 5 th round of test, a certain abscissa on the preset frequency band interval corresponds to one acquisition point in each of the 5 rounds of test, and the abscissa is the first abscissa; for any fitting acquisition point, the abscissa of the fitting acquisition point is the corresponding first abscissa, and the fitting acquisition point can be determined on a detection coordinate system after the corresponding ordinate of the fitting acquisition point is obtained through a formula.
As a preferred embodiment, the comparing the deviation of the test data of the current round of test and the fitted data curve, and identifying the test data having the deviation greater than the set deviation as the first data includes:
screening out the acquisition points which are not in the fitting data curve and are obtained by the round of test, and taking the screened acquisition points as comparison acquisition points;
for any comparison acquisition point, calculating a difference value between the ordinate of the comparison acquisition point and the ordinate of a corresponding point on the fitting data curve;
and comparing the obtained difference value with the set deviation, and if the obtained difference value is larger than the set deviation, comparing the acquisition point to obtain first data.
In this embodiment, by implementing screening out all the data that deviate from the average value by more than a certain value, the extremum data to be finally obtained must also be among the screened out data, that is, implementing preliminary screening of the data to be obtained.
As a preferred embodiment, the setting of the frequency to a frequency within a preset frequency band interval, said screening out all first data corresponding to the setting of the frequency comprises:
taking a set frequency, and determining the abscissa of the set frequency as a second abscissa;
determining a target coordinate interval according to the second abscissa;
the first data in the target coordinate interval is screened out.
The target coordinate interval isWherein->And a is a set tolerance value for the second abscissa.
In this embodiment, a is a positive number; during detection, only detection values corresponding to certain specific frequencies (specific abscissa) are concerned, so that a user can preset one frequency, namely the set frequency, before detection, so that the extremum corresponding to the frequency can be taken out in a targeted manner; however, because the detection deviation may be caused by the equipment deviation or other factors during the detection, that is, the acquisition point where the required extremum is located is not necessarily aligned to the set frequency, in this embodiment, a target coordinate interval is set with the set frequency as the center, that is, all the extremum near the set frequency is screened out, so that the required extremum can be ensured to be obtained.
As shown in fig. 5, in one embodiment, there is provided a coaxial cable testing device, a module of which is used for executing the steps of the coaxial cable testing method, specifically including:
the communication module is used for starting the test after communicating with the test equipment;
the first processing module is used for taking a preset initial acquisition frequency as a current acquisition frequency and carrying out full-band test by using the current acquisition frequency;
the second processing module is used for performing a new round of test in a preset frequency band interval after the current acquisition frequency is increased by a set amplitude;
the third processing module is used for generating a fitting data curve according to the test data of each round of test;
the fourth processing module is used for comparing the deviation between the test data of the current round of test and the fitted data curve and marking the test data with the deviation larger than the set deviation as first data;
the repeating module is used for repeatedly executing the steps S3 to S5 until the test of the preset number of rounds is completed;
and the output module is used for screening out all the first data corresponding to the set frequency, determining extremum data from the first data and outputting the extremum data.
The process of implementing the respective functions of each module in the coaxial cable testing device provided in this embodiment may refer to the description of the embodiment shown in fig. 1, which is not repeated here.
As shown in fig. 6, in one embodiment, a coaxial cable testing system is provided, the system comprising:
the testing equipment is used for testing the coaxial cable; and
and the computer equipment is connected with the testing equipment and is used for executing the coaxial cable testing method.
In this embodiment, the test device is matched with the computer device, so as to realize repeated testing on the coaxial cable, and the collection frequency of the test is increased after each test is completed, so that the accuracy of the test result is ensured, and besides the first round of test, the other rounds of tests only test the frequency band of interest preset by the user, namely, the full frequency band test is not required to be performed in each test, thereby improving the pertinence and the efficiency of the test and reducing the generation of useless data.
FIG. 7 illustrates an internal block diagram of a computer device in one embodiment. As shown in fig. 7, the computer device includes a processor, a memory, a network interface, an input device, and a display screen connected by a system bus. The memory includes a nonvolatile storage medium and an internal memory. The nonvolatile storage medium of the computer device stores an operating system and may also store a computer program, where the computer program when executed by the processor may cause the processor to implement the coaxial cable testing method provided by the embodiment of the present invention. The internal memory may also store a computer program, which when executed by the processor, causes the processor to execute the coaxial cable testing method provided by the embodiment of the invention. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in FIG. 7 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
In one embodiment, the coaxial cable testing device provided by the embodiment of the present invention may be implemented in the form of a computer program that can run on a computer device as shown in fig. 7. The memory of the computer device may store various program modules constituting the coaxial cable testing apparatus, such as a communication module, a first processing module, a second processing module, a third processing module, a fourth processing module, a repetition module, and an output module shown in fig. 5. The computer program of each program module causes the processor to carry out the steps of the coaxial cable testing method of each embodiment of the invention described in the specification.
For example, the computer apparatus shown in fig. 7 may perform step S1 through the communication module in the coaxial cable testing device shown in fig. 5; the computer equipment can execute the step S2 through the first processing module; the computer equipment can execute the step S3 through the second processing module; the computer equipment can execute the step S4 through the third processing module; the computer equipment can execute the step S5 through a fourth processing module; the computer equipment can execute the step S6 through the repetition module; the computer device may execute step S7 through the output processing module.
In one embodiment, a computer device is presented, the computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
s1: after communicating with the test equipment, starting the test;
s2: taking a preset initial acquisition frequency as a current acquisition frequency, and performing full-band test by using the current acquisition frequency;
s3: after the current acquisition frequency is increased by a set amplitude, a new round of test is performed in a preset frequency band interval;
s4: generating a fitting data curve according to the test data of each round of test;
s5: comparing the deviation of test data of the current round of test and the fitted data curve, and marking the test data with the deviation larger than the set deviation as first data;
s6: repeating the steps S3 to S5 until the test of the preset number of rounds is completed;
s7: screening out all first data corresponding to the set frequency, determining extremum data from the first data, and outputting the extremum data.
In one embodiment, a computer readable storage medium is provided, having a computer program stored thereon, which when executed by a processor causes the processor to perform the steps of:
s1: after communicating with the test equipment, starting the test;
s2: taking a preset initial acquisition frequency as a current acquisition frequency, and performing full-band test by using the current acquisition frequency;
s3: after the current acquisition frequency is increased by a set amplitude, a new round of test is performed in a preset frequency band interval;
s4: generating a fitting data curve according to the test data of each round of test;
s5: comparing the deviation of test data of the current round of test and the fitted data curve, and marking the test data with the deviation larger than the set deviation as first data;
s6: repeating the steps S3 to S5 until the test of the preset number of rounds is completed;
s7: screening out all first data corresponding to the set frequency, determining extremum data from the first data, and outputting the extremum data.
It should be understood that, although the steps in the flowcharts of the embodiments of the present invention are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in various embodiments may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor do the order in which the sub-steps or stages are performed necessarily performed in sequence, but may be performed alternately or alternately with at least a portion of the sub-steps or stages of other steps or other steps.
Those skilled in the art will appreciate that all or part of the processes in the methods of the above embodiments may be implemented by a computer program for instructing relevant hardware, where the program may be stored in a non-volatile computer readable storage medium, and where the program, when executed, may include processes in the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. A method for testing a coaxial cable, applied to a computer device, the method comprising:
s1: after communicating with the test equipment, starting the test;
s2: taking a preset initial acquisition frequency as a current acquisition frequency, and performing full-band test by using the current acquisition frequency;
s3: after the current acquisition frequency is increased by a set amplitude, a new round of test is performed in a preset frequency band interval;
s4: generating a fitting data curve according to the test data of each round of test;
s5: comparing the deviation of test data of the current round of test and the fitted data curve, and marking the test data with the deviation larger than the set deviation as first data;
s6: repeating the steps S3 to S5 until the test of the preset number of rounds is completed;
s7: screening out all first data corresponding to the set frequency, determining extremum data from the first data, and outputting the extremum data.
2. The method of claim 1, wherein the initial acquisition frequency is f 1 The current acquisition frequency is increased by a set amplitude, namely the current acquisition frequency is multiplied by a set multiple, and the method concretely comprises the following steps:
wherein,for the acquisition frequency of the nth round of test, +.>Acquisition frequency for n+1 rounds of test, < >>To set the multiple, n is the number of rounds tested, the initial value of n is 1,/is>The initial acquisition frequency is the initial acquisition frequency.
3. The method of claim 1, wherein generating a fitted data curve from test data for each round of testing comprises:
screening out the abscissa of the acquisition point corresponding to each round in a preset frequency band interval, and taking the screened-out abscissa as a first abscissa;
for any one first abscissa, determining fitting acquisition points according to the acquisition points of each wheel corresponding to the first abscissa;
and connecting all the fitting acquisition points to obtain a fitting data curve.
4. A method according to claim 3, wherein the ordinate of the fitting acquisition points is determined by the formula:
wherein,to fit the ordinate of the acquisition point, +.>The ordinate of the acquisition point for the nth round of testing is n, which is the number of the test rounds.
5. A method according to claim 3, wherein comparing the deviation of the test data of the current round of test from the fitted data curve and identifying the test data having a deviation greater than the set deviation as the first data comprises:
screening out the acquisition points which are not in the fitting data curve and are obtained by the round of test, and taking the screened acquisition points as comparison acquisition points;
for any comparison acquisition point, calculating a difference value between the ordinate of the comparison acquisition point and the ordinate of a corresponding point on the fitting data curve;
and comparing the obtained difference value with the set deviation, and if the obtained difference value is larger than the set deviation, comparing the acquisition point to obtain first data.
6. The method of claim 1, wherein the set frequency is a frequency within a preset frequency band interval, and wherein the screening out all first data corresponding to the set frequency comprises:
taking a set frequency, and determining the abscissa of the set frequency as a second abscissa;
determining a target coordinate interval according to the second abscissa;
the first data in the target coordinate interval is screened out.
7. The method of claim 6, wherein the target coordinate interval isWherein->And a is a set tolerance value for the second abscissa.
8. A coaxial cable testing device, wherein the module of the coaxial cable testing device is configured to perform the steps of claim 1, and specifically comprises:
the communication module is used for starting the test after communicating with the test equipment;
the first processing module is used for taking a preset initial acquisition frequency as a current acquisition frequency and carrying out full-band test by using the current acquisition frequency;
the second processing module is used for performing a new round of test in a preset frequency band interval after the current acquisition frequency is increased by a set amplitude;
the third processing module is used for generating a fitting data curve according to the test data of each round of test;
the fourth processing module is used for comparing the deviation between the test data of the current round of test and the fitted data curve and marking the test data with the deviation larger than the set deviation as first data;
the repeating module is used for repeatedly executing the steps S3 to S5 until the test of the preset number of rounds is completed;
and the output module is used for screening out all the first data corresponding to the set frequency, determining extremum data from the first data and outputting the extremum data.
9. A coaxial cable testing system, said system comprising:
the testing equipment is used for testing the coaxial cable; and
computer device, connected to the testing device, for performing the coaxial cable testing method according to any of claims 1-7.
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