A quality detection method and system for flexible torsion-resistant cable

Abstract

The present invention relates to the field of data processing technology, and in particular to a quality detection method and system for a flexible torsion-resistant cable, comprising: obtaining an evaluation value of each segmented interval according to the temperature data of each segmented interval on a temperature curve diagram under the same input power condition after the same number of bends of each test cable of the same batch and the slope of all data points; obtaining an evaluation value of the quality of each test cable according to the temperature change of the temperature curve diagram under different input power conditions after the same number of bends of each test cable of the same batch and the degree of influence on the quality of each test cable; obtaining a problem cable according to the evaluation value of the quality of each test cable of the same batch after different numbers of bends; judging whether there is a quality problem in each batch of test cables according to the number of test cables and the number of problem cables in each batch. The present invention improves the accuracy of the quality detection results of flexible cables.

Description

Technical Field

[0001] The invention relates to the field of data processing, and in particular to a quality detection method and system for a flexible torsion-resistant cable. Background Art

[0002] Flexible cables are wires composed of multiple tiny metal wires or cells. They have very high flexibility and torsion resistance and can be bent, folded and moved in a changing environment without breaking or breaking. This feature makes flexible cables widely used in many fields. In the production process of industrial robots, flexible cables are an indispensable component, which can be flexibly moved and twisted in complex environments to ensure the smooth operation of robots. In the manufacturing process of automotive parts, flexible cables can be used as automotive wires, connectors and sensors, as well as cables to control the internal systems of the car. In medical equipment, flexible cables can be used in detectors, monitoring instruments and medical robots, with high signal transmission quality and adaptability to body tissues. Flexible cables can also be used as internal circuit board connections for electronic devices such as computers, mobile phones, and tablets. When there is a problem with the torsion resistance of flexible cables, it is bound to affect the quality of the final product. Therefore, an accurate analysis should be made of the performance of the flexible torsion-resistant cables produced. The existing technology mainly relies on setting the threshold value of the input power that the cable can withstand to judge the performance of the cable. Such an operation is prone to misjudgment of the cable performance, reducing the accuracy of the quality test results of the flexible cable. Summary of the invention

[0003] The present invention provides a quality detection method and system for a flexible torsion-resistant cable, so as to solve the problem that the threshold of the input power that the flexible cable can withstand is not accurate enough in judging the cable performance.

[0004] A quality detection method and system for a flexible torsion-resistant cable of the present invention adopts the following technical solutions:

[0005] An embodiment of the present invention provides a method for detecting the quality of a flexible torsion-resistant cable, the method comprising the following steps:

[0006] Among several test cables produced in the same batch, a temperature curve graph of each test cable after several different bending times under several different input power conditions from small to large is obtained; the abscissa of the temperature curve graph is time, and the ordinate is temperature data;

[0007] Divide each temperature curve graph into several segment intervals along the positive direction of the horizontal axis;

[0008] According to the temperature data of each segmented interval on the temperature curve diagram under the same input power condition after the same number of bends of each test cable in the same batch, and the slopes of all data points, an evaluation value of each segmented interval is obtained;

[0009] According to the evaluation values ​​of all segmented intervals on the temperature curve under the same input power condition after the same number of bends of each test cable in the same batch, the evaluation value of each temperature curve is obtained; according to the difference in the evaluation values ​​of the temperature curve under adjacent input power conditions after the same number of bends of each test cable in the same batch, the degree of influence of the quality of each test cable is obtained;

[0010] According to the temperature change of the temperature curve under different input power conditions after the same number of bends of each test cable in the same batch and the degree of influence of the quality of each test cable, the evaluation value of the quality of each test cable is obtained; according to the evaluation value of the quality of each test cable in the same batch after different numbers of bends, the problematic cables are obtained; according to the number of test cables in each batch and the number of problematic cables, the performance evaluation value of the test cables in each batch is obtained;

[0011] According to the performance evaluation value of each batch of test cables, it is determined whether each batch of test cables has quality problems.

[0012] Preferably, the evaluation value of each segmented interval is obtained according to the temperature data of each segmented interval on the temperature curve diagram under the same input power condition after the same number of bends of each test cable of the same batch and the slope of all data points, and the specific formula included is as follows:

[0013] ,

[0014] In the formula, Indicates Batch No. Test cable No. After the number of bends The temperature curve under the input power condition is shown in the figure The evaluation value of each segment interval; Indicates Batch No. Test cable No. After the number of bends The temperature curve under the input power condition is shown in the figure The difference between the maximum temperature and the minimum temperature in each segment interval; Indicates Batch No. Test cable No. After the number of bends The maximum value among the differences between the maximum temperature and the minimum temperature in all segmented intervals on the temperature curve under the input power condition; Indicates Batch No. Test cable No. After the number of bends The temperature curve under the input power condition is shown in the figure The first segment interval The slope corresponding to the data points; Indicates Batch No. Test cable No. After the number of bends The temperature curve under the input power condition is shown in the figure The number of all data points in the segment interval.

[0015] Preferably, the evaluation value of each temperature curve is obtained according to the evaluation values ​​of all segmented intervals on the temperature curve under the same input power condition after the same number of bends of each test cable of the same batch, and the specific formula included is as follows:

[0016] ,

[0017] In the formula, Indicates Batch No. Test cable No. After the number of bends Evaluation value of the temperature curve under the input power condition; Indicates Batch No. Test cable No. After the number of bends The mean of the absolute values ​​of the differences between the evaluation values ​​of all two adjacent segmented intervals on the temperature curve under the input power condition; For the Batch No. Test cable No. After the number of bends The maximum absolute value of the difference between the evaluation values ​​of all two adjacent segmented intervals on the temperature curve under the input power condition; For the Batch No. Test cable No. After the number of bends The minimum absolute value of the difference between the evaluation values ​​of all two adjacent segmented intervals on the temperature curve under the input power condition.

[0018] Preferably, the method of obtaining the influence degree of the quality of each test cable according to the difference in evaluation values ​​of the temperature curve graphs under adjacent input power conditions after the same number of bends of each test cable in the same batch includes the following specific steps:

[0019] In the Batch No. Test cable No. After the first bending times, The temperature curve under the previous input power condition adjacent to the first input power condition is recorded as Target temperature curve under input power conditions;

[0020] According to the difference in evaluation values ​​of the temperature curve graph under adjacent input power conditions after the same number of bends of each test cable of the same batch and the evaluation value of the target temperature curve graph, the degree of influence of the quality of each test cable is obtained.

[0021] Preferably, the influence degree of the quality of each test cable is obtained according to the difference in the evaluation values ​​of the temperature curve graph under adjacent input power conditions after the same number of bends of each test cable in the same batch and the evaluation value of the target temperature curve graph, including the specific formula as follows:

[0022] ,

[0023] In the formula, Indicates After the number of bends Batch No. The impact of the quality of the test cable; Indicates Batch No. Test cable No. After the number of bends The absolute value of the difference between the evaluation value of the temperature curve under the input power condition and the evaluation value of the target temperature curve; Indicates Batch No. Test cable No. The mean of the absolute values ​​of the differences between the evaluation values ​​of the temperature curves under all two adjacent input power conditions after the number of bends; Indicates Batch No. Test cable No. The maximum value among the absolute values ​​of the difference between the evaluation values ​​of the temperature curve under all two adjacent input power conditions after the number of bends; Indicates Batch No. Test cable No. The number of different input power conditions after the number of bends.

[0024] Preferably, the evaluation value of the quality of each test cable is obtained according to the temperature change of the temperature curve under different input power conditions after the same number of bends of each test cable in the same batch and the influence degree of the quality of each test cable, including the specific formula as follows:

[0025] The difference between the maximum temperature and the minimum temperature in each target temperature curve is recorded as the temperature change amplitude of each target temperature curve;

[0026] ,

[0027] In the formula, Indicates After the number of bends Batch No. An evaluation value of the test cable quality; Indicates After the number of bends Batch No. The impact of the quality of the test cable; Indicates Batch No. Test cable No. The maximum value among the absolute values ​​of the difference in the temperature change amplitude of the temperature curve under all two adjacent input power conditions after the bending times; No. Batch No. Test cable No. The minimum value among the absolute values ​​of the difference in the temperature change amplitude of the temperature curve under all two adjacent input power conditions after the number of bends; is the normalization function.

[0028] Preferably, the method of obtaining the problematic cables according to the evaluation value of the quality of each test cable of the same batch after different bending times includes the following specific steps:

[0029] After all the bending times Batch No. The average of the evaluation values ​​of the cable quality tested is recorded as Batch No. The final evaluation value of the test cable quality;

[0030] When Batch No. The final evaluation value of the quality of the tested cables is greater than the preset judgment threshold When Batch No. The test cable is Batches of defective cables.

[0031] Preferably, the performance evaluation value of each batch of test cables is obtained according to the number of test cables and the number of problem cables in each batch, and the specific formula included is as follows:

[0032] ,

[0033] In the formula, Indicates Performance evaluation value of the test cables in batches; Indicates The number of defective cables in a batch of tested cables; Indicates Number of test cables in a batch; Indicates Batch No. The final evaluation value of the test cable quality; is the normalization function.

[0034] Preferably, judging whether each batch of test cables has quality problems according to the performance evaluation value of each batch of test cables includes the following specific steps:

[0035] When The performance evaluation value of the test cables in batches is greater than the preset judgment threshold When There were quality issues with batches of test cables.

[0036] The present invention also proposes a quality inspection system for a flexible torsion-resistant cable, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program stored in the memory to implement the steps of the aforementioned quality inspection method for a flexible torsion-resistant cable.

[0037] The beneficial effect of the technical solution of the present invention is: the performance of the cable is analyzed according to the temperature change of the cable assembly under different input power conditions, and the obtained cable performance is more accurate. According to the evaluation values ​​of all segmented intervals on the temperature curve under the same input power condition after the same number of bends of each test cable in the same batch, the evaluation value of each temperature curve is obtained; according to the difference in the evaluation values ​​of the temperature curve under adjacent input power conditions after the same number of bends of each test cable in the same batch, the degree of influence of the quality of each test cable is obtained; according to the temperature change of the temperature curve under different input power conditions after the same number of bends of each test cable in the same batch and the degree of influence of the quality of each test cable, the evaluation value of the quality of each test cable is obtained; according to the evaluation value of the quality of each test cable in the same batch after different numbers of bends, the problem cable is obtained; according to the number of test cables in each batch and the number of problem cables, the performance evaluation value of each batch of test cables is obtained. Therefore, test cables with quality problems can be accurately detected, and the accuracy of the quality detection results of flexible cables is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 A flow chart of the steps of a quality detection method for a flexible torsion-resistant cable according to the present invention;

[0040] Figure 2 A schematic diagram of a device used when bending a cable provided in this embodiment. DETAILED DESCRIPTION

[0041] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of the quality detection method and system of a flexible torsion-resistant cable proposed by the present invention, its specific implementation method, structure, features and effects, in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0042] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0043] The following describes in detail a method and system for quality detection of a flexible torsion-resistant cable provided by the present invention in conjunction with the accompanying drawings.

[0044] See also Figure 1 , which shows a flow chart of the steps of a quality detection method for a flexible torsion-resistant cable provided by an embodiment of the present invention, the method comprising the following steps:

[0045] Step S001: among several test cables produced in the same batch, obtain a temperature curve of each test cable after several different bending times under several different input power conditions from small to large; the horizontal axis of the temperature curve is time, and the vertical axis is temperature data.

[0046] It should be noted that the device used when bending the cable is Figure 2 As shown, Figure 2 The parts of the device used for bending the cable are: 1: base, 2: rotating frame, 3: clamping block, 4: first screw, 5: rotating mechanism, 6: limiting mechanism, 7: counting mechanism, 8: control mechanism, 9: alarm mechanism, 10: adjusting mechanism. When the first screw is rotated, the first screw moves toward the inner side of the clamping block, thereby clamping the cable, and the rotating frame drives the cable to bend 90 degrees, and then the rotating frame drives the cable to bend 90 degrees in the opposite direction, and such rotation is counted as one bend.

[0047] Preset first value The value is 100, and the first value is preset in the cables produced in the same batch randomly. As a test cable, this is described;

[0048] Preset second value for all test cables Bend the cable once, connect it to the circuit, and input different powers such as 5dBm (3.16mW), 10dBm (10mW), 15dBm (31.6mW), 30dBm (1.0W), 40dBm (10.0W), and 42dBm (15.8W) into the cable.

[0049] It should be noted that dBm is a power unit based on 1 milliwatt (mW). 5dBm is approximately equal to 3.16 milliwatts (mW) of power, 10dBm is approximately equal to 10 milliwatts (mW) of power, 15dBm is approximately equal to 31.6 milliwatts (mW) of power, 30dBm is approximately equal to 1.0 watt (W) of power, 40dBm is approximately equal to 10.0 watts (W) of power, and 42dBm is approximately equal to 15.8 watts (W) of power.

[0050] Preset second value is 200, and the test cable is set to the preset second value A test is performed after each bending, for example, a test is performed after 200 bendings, a test is performed after 400 bendings, and a test is performed after 600 bendings, thereby performing multiple tests; in this embodiment, the number of tests is 20 times, and this is used as an example for description.

[0051] The temperature data generated by the test cable at each input power operation is collected through the temperature sensor. The real-time temperature of the cable is recorded every 1s. The collection time is 3 hours. This is described in detail.

[0052] Draw a curve graph with temperature data as the ordinate and time as the abscissa, and obtain multiple temperature curve graphs of the test cable with different bending times and under different input power conditions;

[0053] Among several test cables produced in the same batch, a temperature curve of each test cable is obtained after several different bending times under several different input power conditions from small to large; the abscissa of the temperature curve is time, and the ordinate is temperature data.

[0054] Step S002: obtaining an evaluation value for each segmented interval according to the temperature data of each segmented interval on the temperature curve diagram and the slopes of all data points under the same input power condition after the same number of bends for each test cable of the same batch,

[0055] It should be noted that after the cable is twisted a certain number of times, excessive bending will cause the metal conductor inside the wire to be stretched and deformed, thereby affecting the current conduction capacity, resulting in line heating, voltage reduction and other problems. When the input power of the cable is tested, since the problem cable has a smaller ability to withstand bending, when the problem cable and the normal cable have the same number of bends, the same input power, and the same segmented time period, the metal conductor inside the problem cable will be more deformed, and the problem cable will produce a greater degree of loss, thereby affecting the current conduction capacity, resulting in a larger temperature change amplitude in a certain segmented interval, and the temperature increases faster. Therefore, the segmented interval can be evaluated by the size of the temperature change amplitude in the segmented interval and the size of the overall slope of the segmented interval.

[0056] On the test cable temperature curve, a number of segment intervals are equally divided along the positive direction of the horizontal axis. In this embodiment, the duration of each segment interval is 10 minutes, which is used as an example for description.

[0057] On the test cable temperature curve, the method for obtaining the slope corresponding to a data point is a well-known technique, which is generally the derivative of the data point.

[0058] No. Batch No. Test cable No. After the number of bends The temperature curve under the input power condition is shown in the figure The calculation method of the evaluation value of each segment interval is as follows:

[0059] ,

[0060] In the formula, Indicates Batch No. Test cable No. After the number of bends The temperature curve under the input power condition is shown in the figure The evaluation value of each segment interval; Indicates Batch No. Test cable No. After the number of bends The temperature curve under the input power condition is shown in the figure The difference between the maximum temperature and the minimum temperature in each segment interval; Indicates Batch No. Test cable No. After the number of bends The maximum value among the differences between the maximum temperature and the minimum temperature in all segmented intervals on the temperature curve under the input power condition; is the maximum value function; Indicates Batch No. Test cable No. After the number of bends The temperature curve under the input power condition is shown in the figure The first segment interval The slope corresponding to the data points; Indicates Batch No. Test cable No. After the number of bends The temperature curve under the input power condition is shown in the figure The number of all data points in the segment interval.

[0061] What needs to be explained is that The test cable The overall slope of each segment interval; the larger the value, the faster the temperature increase in the segment interval, the more problematic the cable is. The larger the evaluation value of a segment interval is, the greater the

[0062] Step S003: Obtain the evaluation value of each temperature curve according to the evaluation values ​​of all segmented intervals on the temperature curve under the same input power condition after the same number of bendings of each test cable of the same batch; obtain the degree of influence of the quality of each test cable according to the difference in the evaluation values ​​of the temperature curve under adjacent input power conditions after the same number of bendings of each test cable of the same batch.

[0063] It should be noted that the temperature variation of the problematic cable under different input powers is different from that of the normal cable, and thus the problem can be screened by the variation of the temperature curve under multiple input powers.

[0064] It should be noted that with the continuous input of power, the temperature of the cable will gradually rise, and the evaluation values ​​of the adjacent segmented intervals of the same curve will gradually increase. Because the problem cable has insufficient tolerance for torsion, the same multiple torsion will cause greater deformation of the metal conductor inside the problem cable, and the conductivity will be reduced more, which will cause more loss to the problem cable, and the magnitude of the gradual increase in the evaluation value will be greater. And when the loss is too large, the problem cable will suffer a huge loss in conductivity, and the evaluation value of the adjacent segmented intervals of the same curve will increase sharply. Therefore, the temperature curve obtained by a single input power can be evaluated by the gradual increase in the evaluation value of each segmented interval on the same curve in time sequence and the maximum difference in the average temperature of adjacent segmented intervals, so as to screen the quality of this cable.

[0065] No. Batch No. Test cable No. After the number of bends The calculation method of the evaluation value of the temperature curve under the input power condition is as follows:

[0066] ,

[0067] In the formula, Indicates Batch No. Test cable No. After the number of bends Evaluation value of the temperature curve under the input power condition; Indicates Batch No. Test cable No. After the number of bends The mean of the absolute values ​​of the differences between the evaluation values ​​of all two adjacent segmented intervals on the temperature curve under the input power condition; For the Batch No. Test cable No. After the number of bends The maximum absolute value of the difference between the evaluation values ​​of all two adjacent segmented intervals on the temperature curve under the input power condition; For the Batch No. Test cable No. After the number of bends The minimum absolute value of the difference between the evaluation values ​​of all two adjacent segmented intervals on the temperature curve under the input power condition; is the maximum value function; is the minimum function.

[0068] What needs to be explained is that The larger the value is, the greater the gradual increase in the evaluation value of this cable will be, the greater the possibility that this cable is a problematic cable, and the greater the evaluation value of this curve will be. for and The larger the difference, the greater the possibility that the evaluation value of the segmented interval of this curve will increase sharply, the greater the possibility that the cable will have excessive loss, and the higher the evaluation value of this curve.

[0069] It should be noted that the temperature rise of the cable increases with the increase of input power. The problem cable has insufficient ability to withstand twisting, and a small amount of twisting will cause huge losses to the problem cable. At this time, when a large power is input to the problem cable, the resistance of the cable is too large, and the curve evaluation value is greatly different from that at a lower input power. Under normal circumstances, the evaluation value obtained by a single different input power should increase with the gradual increase of input power. However, in the problem cable, when a large power is input, the cable will have insufficient bearing capacity, resulting in a sudden increase in the evaluation value. Therefore, screening can be carried out by the sudden increase in the evaluation values ​​of the curves corresponding to two adjacent different input powers in one test.

[0070] In the Batch No. Test cable No. After the first bending times, The temperature curve under the previous input power condition adjacent to the first input power condition is recorded as Target temperature curve under different input power conditions.

[0071] It should be noted that the influence of the quality of the test cable is calculated by changing the evaluation value corresponding to the temperature curve obtained by multiple input powers.

[0072] No. After the number of bends Batch No. The calculation method for the influence of the quality of the test cable is as follows:

[0073] ,

[0074] In the formula, Indicates After the number of bends Batch No. The impact of the quality of the test cable; Indicates Batch No. Test cable No. After the number of bends The absolute value of the difference between the evaluation value of the temperature curve under the input power condition and the evaluation value of the target temperature curve; Indicates Batch No. Test cable No. The mean of the absolute values ​​of the differences between the evaluation values ​​of the temperature curves under all two adjacent input power conditions after the number of bends; Indicates Batch No. Test cable No. The maximum value among the absolute values ​​of the difference between the evaluation values ​​of the temperature curve under all two adjacent input power conditions after the number of bends; Indicates Batch No. Test cable No. The number of different input power conditions after the number of bends.

[0075] What needs to be explained is that For the Batch No. Test cable No. The gradual change of the slope evaluation value under different input power conditions after 3 bends. The larger the value, the smaller the gradual change of this cable, and the more it conforms to the situation where the cable will increase when it suffers a large loss. The possibility that this cable is a problematic cable is greater. for and The larger the difference, the more likely it is that the cable has insufficient tolerance for high input power and generates large losses when bent, making it more likely to be a problematic cable.

[0076] Step S004: Obtain an evaluation value of the quality of each test cable based on the temperature change of the temperature curve under different input power conditions after the same number of bendings of each test cable in the same batch and the degree of influence of the quality of each test cable; obtain problematic cables based on the evaluation value of the quality of each test cable in the same batch after different numbers of bendings; obtain a performance evaluation value of the test cables in each batch based on the number of test cables and the number of problematic cables in each batch.

[0077] It should be noted that, similarly, when a large power is input, the change in the overall temperature of the cable will also increase sharply. Therefore, the quality of the current cable can be screened by the sudden increase in the overall temperature of the curves corresponding to two adjacent different input powers in one test. When the problem cable has a large loss, the number of twists required is less, so when the above situation is shown, the fewer the number of tests, the more likely this cable is a problem cable. Therefore, the quality of the cable can be screened by the number of bends of the current cable.

[0078] The difference between the maximum temperature and the minimum temperature in each target temperature curve graph is recorded as the temperature change amplitude of each target temperature curve graph.

[0079] No. After the number of bends Batch No. The calculation method of the evaluation value of the test cable quality is as follows:

[0080] ,

[0081] In the formula, Indicates After the number of bends Batch No. An evaluation value of the test cable quality; Indicates After the number of bends Batch No. The impact of the quality of the test cable; Indicates Batch No. Test cable No. The maximum value among the absolute values ​​of the difference in the temperature change amplitude of the temperature curve under all two adjacent input power conditions after the bending times; No. Batch No. Test cable No. The minimum value among the absolute values ​​of the difference in the temperature change amplitude of the temperature curve under all two adjacent input power conditions after the number of bends; is the normalization function.

[0082] What needs to be explained is that The larger the difference, the more likely it is that the cable is a problem cable because it cannot withstand high input power after being bent and a sudden temperature increase occurs. The fewer times the cable is bent, the worse the cable quality is. The greater the impact of a test cable's quality, the more likely it is that there is a problem with the cable.

[0083] It should be noted that before the severity of cable loss reaches a certain level, the above analysis is performed on each monitoring of a single cable to obtain multiple evaluation values ​​of the cable quality, and the average value is taken as the quality evaluation value of the cable.

[0084] After all the bending times Batch No. The average of the evaluation values ​​of the cable quality tested is recorded as Batch No. The final evaluation value of the test cable quality;

[0085] Preset judgment threshold is 0.5, when Batch No. The final evaluation value of the quality of the tested cables is greater than the preset judgment threshold When Batch No. The test cable is Batches of problematic cables;

[0086] At this point, all problematic cables in each batch are obtained.

[0087] It should be noted that the more problematic cables are randomly selected from the same batch of cables, the more problematic the batch of cables is. Therefore, screening can be performed by the ratio of the number of problematic cables to the total number of cables selected. The higher the problem evaluation value of the problematic cable, the greater the problem of the cable, and the worse the performance of this batch of cables. Therefore, screening can be performed by the sum of the evaluation values ​​of the quality of the problematic cables.

[0088] No. The calculation method for the performance evaluation value of a batch of test cables is as follows:

[0089] ,

[0090] In the formula, Indicates Performance evaluation value of the test cables in batches; Indicates The number of defective cables in a batch of tested cables; Indicates Number of test cables in a batch; Indicates Batch No. The final evaluation value of the test cable quality; is the normalization function.

[0091] What needs to be explained is that It is the proportion of problematic cables in the total number of tested cables. The larger the value, the greater the proportion of problematic cables. The more problematic cables there are, the worse the performance of this batch of cables. For the The size of the total problem evaluation value in the batch of tested cables. The larger the value, the worse the performance of this batch of cables, and the worse the ability to withstand bending and torsion.

[0092] Step S005: judging whether each batch of test cables has quality problems according to the performance evaluation value of each batch of test cables.

[0093] When The performance evaluation value of the test cables in batches is greater than the preset judgment threshold At that time, it was determined that this batch of cables had quality problems and could not be sold.

[0094] At this point, all the test cables with problems are obtained.

[0095] It should be noted that real-time data is obtained through the temperature sensor and transmitted to the central processor, and the data is analyzed in the central processor to obtain the final evaluation value of the current batch of cables and the result of whether the current batch of cables needs to be scrapped.

[0096] It should be noted that when scrapping is required, the data will be losslessly compressed (Huffman coding, run-length coding, etc.) and stored in the database for reference when improving the production process later.

[0097] If the current batch of cables can be used and sold normally, the obtained data will be processed with lossy compression (conversion encoding, etc.) to reduce the use of memory space.

[0098] An embodiment of the present invention further provides a quality detection system for a flexible torsion-resistant cable, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above steps S001 to S005 when executing the computer program.

[0099] At this point, this embodiment is completed.

[0100] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quality detection method for a flexible torsion-resistant cable, characterized in that: The method comprises the following steps: Among several test cables produced in the same batch, a temperature curve graph of each test cable after several different bending times under several different input power conditions from small to large is obtained; the abscissa of the temperature curve graph is time, and the ordinate is temperature data; Divide each temperature curve graph into several segment intervals along the positive direction of the horizontal axis; According to the temperature data of each segmented interval on the temperature curve diagram under the same input power condition after the same number of bends of each test cable in the same batch, and the slopes of all data points, an evaluation value of each segmented interval is obtained; According to the evaluation values ​​of all segmented intervals on the temperature curve under the same input power condition after the same number of bends of each test cable in the same batch, the evaluation value of each temperature curve is obtained; according to the difference in the evaluation values ​​of the temperature curve under adjacent input power conditions after the same number of bends of each test cable in the same batch, the degree of influence of the quality of each test cable is obtained; According to the temperature change of the temperature curve under different input power conditions after the same number of bends of each test cable in the same batch and the degree of influence of the quality of each test cable, the evaluation value of the quality of each test cable is obtained; according to the evaluation value of the quality of each test cable in the same batch after different numbers of bends, the problematic cables are obtained; according to the number of test cables in each batch and the number of problematic cables, the performance evaluation value of the test cables in each batch is obtained; According to the performance evaluation value of each batch of test cables, determine whether each batch of test cables has quality problems; The evaluation value of each segmented interval is obtained according to the temperature data of each segmented interval on the temperature curve diagram under the same input power condition after the same number of bends of each test cable of the same batch and the slope of all data points, including the specific formula as follows: ， In the formula, It represents the evaluation value of the i-th segment interval on the temperature curve diagram under the m-th input power condition after the k-th bending number of the s-th test cable of the z-th batch; It represents the difference between the maximum temperature value and the minimum temperature value of the ith segment interval on the temperature curve diagram under the mth input power condition after the kth bending number of the sth test cable of the zth batch; It represents the maximum value of the difference between the maximum temperature and the minimum temperature in all segmented intervals on the temperature curve diagram under the mth input power condition after the kth bending number of the sth test cable in the zth batch; represents the slope corresponding to the jth data point in the ith segment of the temperature curve under the mth input power condition after the kth bending number of the sth test cable in the zth batch; represents the number of all data points in the ith segment interval on the temperature curve diagram under the mth input power condition after the kth bending number of the sth test cable of the zth batch; The evaluation value of each temperature curve is obtained according to the evaluation values ​​of all segmented intervals on the temperature curve under the same input power condition after the same number of bends of each test cable in the same batch, and the specific formula included is as follows: ， In the formula, represents the evaluation value of the temperature curve diagram under the mth input power condition after the kth bending number of the sth test cable of the zth batch; It represents the mean of the absolute values ​​of the differences between the evaluation values ​​of all two adjacent segmented intervals on the temperature curve diagram of the sth test cable of the zth batch under the mth input power condition after the kth bending number; It is the maximum value of the absolute value of the difference between the evaluation values ​​of all two adjacent segmented intervals on the temperature curve diagram of the sth test cable of the zth batch after the kth bending times and under the mth input power condition; It is the minimum absolute value of the difference between the evaluation values ​​of all two adjacent segmented intervals on the temperature curve diagram of the sth test cable of the zth batch under the mth input power condition after the kth bending number; The specific steps of obtaining the influence degree of the quality of each test cable according to the difference of the evaluation values ​​of the temperature curve graph under adjacent input power conditions after the same number of bends of each test cable in the same batch are as follows: After the kth bending number of the sth test cable of the zth batch, the temperature curve under the previous input power condition adjacent to the mth input power condition is recorded as the target temperature curve under the mth input power condition; According to the difference in evaluation values ​​of the temperature curve graph under adjacent input power conditions after the same number of bends of each test cable in the same batch and the evaluation value of the target temperature curve graph, the degree of influence of the quality of each test cable is obtained; The influence degree of the quality of each test cable is obtained according to the difference in the evaluation value of the temperature curve graph under adjacent input power conditions after the same number of bends of each test cable in the same batch and the evaluation value of the target temperature curve graph, including the specific formula as follows: ， In the formula, It indicates the degree of influence on the quality of the sth test cable of the zth batch after the kth bending times; represents the absolute value of the difference between the evaluation value of the temperature curve graph under the m-th input power condition after the k-th bending number of the s-th test cable of the z-th batch and the evaluation value of the target temperature curve graph; It represents the mean of the absolute values ​​of the differences between the evaluation values ​​of the temperature curves under all two adjacent input power conditions after the kth bending times of the sth test cable of the zth batch; It represents the maximum value of the absolute value of the difference between the temperature curve evaluation values ​​under all two adjacent input power conditions after the kth bending number of the sth test cable in the zth batch; represents the number of different input power conditions after the kth bending number of the sth test cable of the zth batch; The evaluation value of the quality of each test cable is obtained according to the temperature change of the temperature curve under different input power conditions after the same number of bends of each test cable in the same batch and the influence degree of the quality of each test cable, including the specific formula as follows: The difference between the maximum temperature and the minimum temperature in each target temperature curve is recorded as the temperature change amplitude of each target temperature curve; ， In the formula, represents the evaluation value of the quality of the sth test cable of the zth batch after the kth bending number; It represents the maximum value among the absolute values ​​of the difference between the temperature change amplitudes of the temperature curves under all two adjacent input power conditions after the kth bending number of the sth test cable of the zth batch; It represents the minimum value among the absolute values ​​of the difference between the temperature change amplitudes of the temperature curves under all two adjacent input power conditions after the kth bending times of the sth test cable of the zth batch; is the normalization function; The method of obtaining the problematic cables according to the evaluation value of the quality of each test cable of the same batch after different bending times includes the following specific steps: The average of the evaluation values ​​of the quality of the s-th test cable in the z-th batch after all bending times is recorded as the final evaluation value of the quality of the s-th test cable in the z-th batch; When the final evaluation value of the quality of the sth test cable of the zth batch is greater than the preset judgment threshold T, the sth test cable of the zth batch is a problematic cable of the zth batch; The performance evaluation value of each batch of test cables is obtained according to the number of test cables and the number of problem cables in each batch, and the specific formula included is as follows: ， In the formula, represents the performance evaluation value of the test cable of the zth batch; represents the number of problematic cables in the zth batch of test cables; A represents the number of test cables in the zth batch; It represents the final evaluation value of the quality of the sth test cable in the zth batch.

2. The quality inspection method for a flexible torsion-resistant cable according to claim 1 is characterized in that: The specific steps of judging whether each batch of test cables has quality problems according to the performance evaluation value of each batch of test cables are as follows: When the performance evaluation value of the test cables of the zth batch is greater than the preset judgment threshold T, it is determined that the test cables of the zth batch have quality problems.

3. A quality detection system for a flexible torsion-resistant cable, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the computer program is executed by a processor, the steps of a quality detection method for a flexible torsion-resistant cable as described in any one of claims 1 to 2 are implemented.

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