A monitoring signal quality assessment method and system

Abstract

The present invention provides a quality assessment method and system for monitoring signals, which obtain signal curves of monitoring signals multiple times to obtain a reference signal curve, divide the reference signal curve into an initial stage, a climbing stage and a peak stage based on the peak value of the reference signal curve and a preset key ratio value of the peak value, obtain a real-time signal curve of the monitoring signal, calculate the difference area between the real-time signal curve and the reference signal curve at different stages, divide the difference area of each stage by the product of the duration of the corresponding stage and the peak value of the reference signal curve, and obtain the difference value between the real-time signal curve and the reference signal curve at different stages; the difference sensitivity between the real-time signal curve and the reference signal curve at different stages is not affected by the regional area of the reference signal curve at different stages, thereby improving the accuracy of the quality assessment of the monitoring signal.

Description

Technical Field

[0001] The present invention relates to the technical field of signal quality assessment, and in particular to a quality assessment method and system for monitoring signals. Background Art

[0002] In the crimping process, crimp force monitoring is a technology used to monitor and evaluate the force during the crimping process. By analyzing the crimping force waveform, the quality of the crimping job can be determined from the perspective of crimp force. Currently, crimp force quality assessment is typically performed by calculating the difference between the actual and reference curves for each region, and then calculating the ratio of the area of the reference curve to the area of each region as the difference value.

[0003] In the initial crimping zone, where pressure is low, the smaller area of the baseline curve can amplify small disturbances, leading to misjudgments and reduced system stability and reliability. Furthermore, because the baseline curves vary significantly in area, the same difference can yield significantly different calculated values in different regions, leading to inconsistent sensitivity and making it difficult or even incorrect to set the difference threshold. Summary of the Invention

[0004] The present invention provides a monitoring signal quality assessment method, system, computer device and storage medium, which are not affected by the regional area of the reference signal curve at different stages. The difference value sensitivity between the real-time signal curve and the reference signal curve at different stages is consistent, thereby improving the accuracy of the monitoring signal quality assessment.

[0005] In a first aspect, the present invention provides a method for monitoring signal quality assessment, comprising:

[0006] Acquire the signal curve of the monitoring signal multiple times to obtain a reference signal curve;

[0007] Dividing the reference signal curve into an initial stage, a climbing stage, and a peak stage based on the peak value of the reference signal curve and a preset key ratio value of the peak value;

[0008] Obtaining a real-time signal curve of the monitoring signal, and calculating the difference area between the real-time signal curve and the reference signal curve at different stages;

[0009] The difference area of each stage is divided by the product of the duration of the corresponding stage and the peak value of the reference signal curve to obtain the difference value between the real-time signal curve and the reference signal curve in different stages.

[0010] In one embodiment, when the monitoring signal is a crimping signal, the method includes:

[0011] The pressure curves of multiple crimping processes are acquired through a pressure monitor to obtain a reference pressure curve;

[0012] Dividing the reference pressure curve into a low pressure stage, a climbing stage, and a peak stage based on the peak value of the reference pressure curve and a preset key ratio value of the peak value;

[0013] Obtaining a real-time pressure curve during the crimping process, and calculating the difference areas between the real-time pressure curve and the reference pressure curve at different pressure stages;

[0014] The difference area of each pressure stage is divided by the product of the duration of the corresponding pressure stage and the peak value of the reference pressure curve to obtain the difference value between the real-time pressure curve and the reference pressure curve in different pressure stages.

[0015] In one embodiment, the obtaining of the real-time pressure curve of the crimping process and the calculation of the difference area between the real-time pressure curve and the reference pressure curve at different pressure stages are specifically as follows:

[0016] Obtaining a real-time pressure curve of the crimping process, and collecting sampling values of the real-time pressure curve and the reference pressure curve according to a preset sampling period;

[0017] The sum of difference values of the sampling values of the real-time pressure curve and the reference pressure curve at different pressure stages is calculated, and the sum of the difference values is used as the difference area of the real-time pressure curve and the reference pressure curve at different pressure stages.

[0018] In one embodiment, the difference area of each pressure stage is divided by the product of the duration of the corresponding pressure stage and the peak value of the reference pressure curve to obtain the difference value between the real-time pressure curve and the reference pressure curve at different pressure stages:

[0019] Calculating the product of the number of sampling points at different pressure stages and the peak value of the reference pressure curve;

[0020] The sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve at different pressure stages is divided by the product of the number of sampling points in the corresponding pressure stage and the peak value of the reference pressure curve to obtain the quantitative difference value between the real-time pressure curve and the reference pressure curve at different pressure stages.

[0021] In one embodiment, the sum of the difference values between the sampling values of the real-time pressure curve and the reference pressure curve at different pressure stages is divided by the product of the number of sampling points in the corresponding pressure stage and the peak value of the reference pressure curve to obtain the quantitative difference value between the real-time pressure curve and the reference pressure curve at different pressure stages:

[0022] ;

[0023] ;

[0024] ;

[0025] in, Indicates the The stress stage, Respectively represent The start and end time of each stress phase, Indicates the real-time pressure curve at the sampling time The pressure value, Indicates the reference pressure curve at the sampling time The pressure value, Indicates in The sum of the difference values between the real-time pressure curve and the reference pressure curve sampling values in each pressure stage; represents the peak value of the reference pressure curve, Indicates the The number of sampling points in each pressure stage, Indicates that the real-time pressure curve and the reference pressure curve are in the The quantitative difference value of each pressure stage.

[0026] In one embodiment, the dividing of the reference pressure curve into a low pressure stage, a climbing stage, and a peak stage based on the peak value of the reference pressure curve and a preset key ratio value of the peak value is specifically as follows:

[0027] The reference pressure curve is divided into a low-pressure stage corresponding to a pressure value between [10% and 50%] of the peak value, a climbing stage corresponding to a pressure value between [50% and 90%] of the peak value, and a peak stage corresponding to a pressure value between [90% of the rising edge and 90% of the falling edge] of the peak value based on the peak value of the reference pressure curve and the preset key ratio value of the peak value.

[0028] In one embodiment, obtaining pressure curves of multiple crimping processes through a pressure monitor to obtain a reference pressure curve includes:

[0029] Obtain several pressure curves during the crimping process through a pressure monitor;

[0030] A plurality of pressure curves meeting the quality index are selected from the plurality of pressure curves to synthesize a reference pressure curve for the crimping process.

[0031] In a second aspect, the present invention further provides a monitoring signal quality assessment system, comprising:

[0032] A reference signal acquisition unit, configured to acquire a signal curve of the monitoring signal multiple times to obtain a reference signal curve;

[0033] a signal dividing unit, configured to divide the reference signal curve into an initial stage, a climbing stage, and a peak stage based on a peak value of the reference signal curve and a preset key ratio value of the peak value;

[0034] a difference area calculation unit, configured to obtain a real-time signal curve of the monitoring signal and calculate the difference areas between the real-time signal curve and the reference signal curve at different stages;

[0035] The difference value calculation unit is used to divide the difference area of each stage by the product of the duration of the corresponding stage and the peak value of the reference signal curve to obtain the difference value between the real-time signal curve and the reference signal curve in different stages.

[0036] In a third aspect, the present invention further proposes a computer device, comprising a processor and a memory, wherein the memory stores a computer program, and when the computer program is loaded and executed by the processor, the computer program implements any one of the methods described above.

[0037] In a fourth aspect, the present invention further proposes a computer storage medium, wherein a computer program is stored in the computer storage medium, and when the computer program is executed, any one of the methods described above is implemented.

[0038] The present invention provides a quality assessment method, system, computer equipment and storage medium for monitoring signals, which obtain signal curves of monitoring signals multiple times to obtain a reference signal curve, divide the reference signal curve into an initial stage, a climbing stage and a peak stage based on the peak value of the reference signal curve and a preset key ratio value of the peak value, obtain a real-time signal curve of the monitoring signal, calculate the difference area between the real-time signal curve and the reference signal curve at different stages, divide the difference area of each stage by the product of the duration of the corresponding stage and the peak value of the reference signal curve, and obtain the difference value between the real-time signal curve and the reference signal curve at different stages; the difference sensitivity of the difference value between the real-time signal curve and the reference signal curve at different stages is not affected by the regional area of the reference signal curve at different stages, thereby improving the accuracy of the monitoring signal quality assessment. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the present invention. For ordinary technicians in this field, without paying any creative work, they can also obtain drawings of other embodiments based on these drawings.

[0040] Figure 1 This is a flow chart of a method for monitoring signal quality assessment in one embodiment of the present invention;

[0041] Figure 2 This is a flow chart of a method for evaluating the quality of a monitoring signal when the monitoring signal is a crimping signal in one embodiment of the present invention;

[0042] Figure 3 A schematic diagram of calculating a difference value in one embodiment of the present invention;

[0043] Figure 4 This is a diagram showing the results of a pressure monitor based on an existing difference value calculation method in one embodiment of the present invention;

[0044] Figure 5 This is a diagram showing the results of the difference value calculation method on a pressure monitor according to one embodiment of the present invention;

[0045] Figure 6 FIG. 4 is a system block diagram of a monitoring signal quality assessment system according to one embodiment of the present invention. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] 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.

[0048] See also Figure 1 The present invention provides a method for evaluating the quality of a monitoring signal, in one embodiment of which the method includes:

[0049] S101 , acquiring a signal curve of the monitoring signal multiple times to obtain a reference signal curve.

[0050] The monitoring signal is specifically a monitoring signal of a detection object in the field of quality detection involving differential comparison between a real-time signal curve and a reference signal curve, including various application fields, such as crimping field, stamping field, etc.

[0051] Stamping is a manufacturing process that uses a die to apply pressure to a sheet material to form a specific shape. It is widely used in industries such as automotive, home appliances, and electronic equipment. Monitoring and analyzing changes in the stamping force during this process is crucial to ensuring product quality. In crimping applications, such as wire harness connectors, which are widely used in automotive, electronic equipment, aerospace, and other fields, testing the insertion and extraction force of wire harness connectors is one of the key indicators for evaluating connector quality and performance.

[0052] Specifically, using the monitoring signal as an example, a pressure monitor can be used to obtain pressure curves from multiple crimping processes to generate a baseline pressure curve. Crimp force monitoring is a technology used to monitor and evaluate the force during the crimping process. By analyzing the crimping force waveform, the quality of a single crimping job can be determined.

[0053] S102 : Dividing the reference signal curve into an initial stage, a climbing stage, and a peak stage based on the peak value of the reference signal curve and a preset key ratio value of the peak value.

[0054] Specifically, when the detection signal is a pressing signal, the reference pressure curve is divided into a low pressure stage, a climbing stage and a peak stage according to the peak value of the reference pressure curve and a preset key ratio value of the peak value.

[0055] S103 , obtaining a real-time signal curve of the monitoring signal, and calculating the difference area between the real-time signal curve and the reference signal curve at different stages.

[0056] Specifically, when the detection signal is a crimping signal, a real-time pressure curve of the crimping process is obtained, and the difference area between the real-time pressure curve and the reference pressure curve at different pressure stages is calculated. The difference area is the area formed between the real-time pressure curve and the reference pressure curve at different pressure stages.

[0057] S104 , dividing the difference area of each stage by the product of the duration of the corresponding stage and the peak value of the reference signal curve to obtain difference values between the real-time signal curve and the reference signal curve in different stages.

[0058] Specifically, when the detection signal is a crimping signal, the difference area of each pressure stage is divided by the product of the duration of the corresponding pressure stage and the peak value of the reference pressure curve to obtain the difference value between the real-time pressure curve and the reference pressure curve at different pressure stages. By replacing the regional area of the reference pressure curve at different pressure stages in the prior art as the comparison factor for the difference area with the product of the duration of the different pressure stages and the peak value of the reference pressure curve, the calculation of the difference value is no longer affected by the regional area of the reference pressure curve at different stages, and the sensitivity of the difference value at different pressure stages tends to be consistent, thereby facilitating the quality assessment of the crimping force at different pressure stages and improving the accuracy of the crimping force quality assessment during the crimping process.

[0059] The monitoring signal quality assessment method of this embodiment can be applied to a variety of quality detection fields involving differential comparison of real-time signal curves and reference signal curves. The reference signal curve and the real-time signal curve are segmented according to the peak value of the reference signal curve and the key ratio value preset by the peak value. The real-time signal curve is segmented and analyzed. The product of the duration of different stages and the peak value of the reference pressure curve is used as the comparison factor of the difference area to obtain the difference value of different stages. This method is not affected by the area of the reference signal region at different stages of the monitoring signal, so that the sensitivity of the difference value at different stages tends to be consistent, thereby effectively improving the accuracy of the monitoring signal quality assessment.

[0060] See also Figure 2 In one embodiment, when the monitoring signal is a crimping signal, the quality assessment method of the monitoring signal includes:

[0061] S201, obtaining several pressure curves of the crimping process through a pressure monitor.

[0062] Furthermore, the crimping process includes a crimping process of a wiring harness interface.

[0063] S202 , selecting a plurality of pressure curves that meet the quality index from the plurality of pressure curves to synthesize a reference pressure curve for the crimping process.

[0064] S203 : Dividing the reference pressure curve into a low pressure stage, a climbing stage, and a peak stage based on the peak value of the reference pressure curve and a preset key ratio value of the peak value.

[0065] During the crimping process of the wire harness interface, the crimping force is not achieved overnight. It will go through a process of steadily rising from small to large and then falling back to ensure the crimping quality of the wire harness interface. When evaluating the quality of the crimping force, dividing the pressure stages into different stages for separate analysis can effectively evaluate the quality of the crimping process.

[0066] In one embodiment, 10%, 50% and 90% are set as key proportion values preset for the peak value of the reference pressure curve, and the reference pressure curve is specifically divided into a low pressure stage corresponding to a peak value of [10%~50%], a climbing stage corresponding to a peak value of [50%~90%], and a peak stage corresponding to a peak value of [90% of the rising edge~90% of the falling edge].

[0067] Among them, the setting of the key ratio value can be adjusted according to the actual application scenario. For example, in an application scenario where the crimping force changes faster, 5%, 30% and 70% can be used as the preset key ratio values of the peak value of the reference pressure curve. Correspondingly, the reference pressure curve is divided into a low-pressure stage corresponding to the peak value of the pressure value at [5%~30%], a climbing stage corresponding to the peak value of the pressure value at [30%~70%], and a peak stage corresponding to the peak value of the pressure value at [rising edge 70%~falling edge 70%]. This embodiment does not specifically limit the key ratio value.

[0068] S204 , obtaining a real-time pressure curve of the crimping process, and collecting sampling values of the real-time pressure curve and the reference pressure curve according to a preset sampling period.

[0069] S205 , calculating the sum of difference values between the sampling values of the real-time pressure curve and the reference pressure curve at different pressure stages, and using the sum of the difference values as the difference area between the real-time pressure curve and the reference pressure curve at different pressure stages.

[0070] See also Figure 3 Based on the time division points T1, T2, and T3 corresponding to different pressure stages of the reference pressure curve, the real-time pressure curve is divided into a low-pressure stage [T1-T2], a climbing stage [T2-T3], and a peak stage [T3-T4]. Based on the sampling values of the real-time pressure curve L and the reference pressure curve Lref, the difference area between the real-time pressure curve and the reference pressure curve in different pressure stages is calculated as:

[0071] ;

[0072] in, Indicates the There are three pressure stages, namely low pressure stage, climbing stage and peak stage. Respectively represent The start and end time of each stress phase, Indicates the real-time pressure curve at the sampling time The pressure value, Indicates the reference pressure curve at the sampling time The pressure value, Indicates in The sum of the difference values between the real-time pressure curve and the reference pressure curve sampling values in each pressure stage.

[0073] S206: Calculate the product of the number of sampling points at different pressure stages and the peak value of the reference pressure curve.

[0074] ;

[0075] in, represents the peak value of the reference pressure curve, Indicates the The number of sampling points in each pressure stage.

[0076] S207, dividing the sum of the difference values of the sampling values of the real-time pressure curve and the baseline pressure curve at different pressure stages by the product of the number of sampling points in the corresponding pressure stage and the peak value of the baseline pressure curve, to obtain the quantitative difference values between the real-time pressure curve and the baseline pressure curve at different pressure stages.

[0077] ;

[0078] in, Indicates that the real-time pressure curve and the reference pressure curve are in the The quantitative difference value of each pressure stage.

[0079] In the prior art, the quantitative difference between the real-time pressure curve and the reference pressure curve at different pressure stages is calculated as follows:

[0080] ;

[0081] .

[0082] in, It represents the area of the reference pressure curve at different pressure stages, specifically the quantized area based on the sampling value and number of sampling points of the reference pressure curve.

[0083] The quantitative difference value calculated by dividing the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve at different pressure stages by the product of the number of sampling points in the corresponding pressure stage and the peak value of the reference pressure curve is not affected by the number of sampling points and amplitude at different pressure stages and shows consistent sensitivity.

[0084] See also Figure 4 and Figure 5 In actual application, the specific parameters of the wire harness crimping process are:

[0085] Count: 233 (OK) / 5 (NG) / 97.90% (yield);

[0086] Pressure: 481(KG) / 502.50(KG).

[0087] See also Figure 4 , the quantitative difference values of the three pressure stages calculated according to the existing difference value calculation method are:

[0088] S1: -17.46 (-25~25);

[0089] S2: -7.35 (-25~25);

[0090] S3:-4.5 (-25~25).

[0091] It can be seen that the amplitude of the quantitative difference value in the low-pressure phase is much larger than that in the rising and peak phases. However, the difference between the real-time pressure curve in the low-pressure phase and the baseline pressure curve is not much different from that in the rising and peak phases, as can be seen from the pressure monitor. In this application, the real-time pressure curve changes smoothly. If the smoothness is slightly reduced or there is interference, the quantitative difference value in the low-pressure phase is likely to exceed the preset threshold range (-25 to 25). This threshold range is used to determine whether the crimping force is acceptable. If it exceeds this threshold range, it is judged as unacceptable. Because existing methods are too sensitive to quantitative differences in the low-pressure phase, they are not conducive to crimping force quality assessment.

[0092] See also Figure 5 , the quantitative difference values of the three pressure stages calculated according to the difference value calculation method of the embodiment of the present application are:

[0093] S1: -4.75 (-25~25);

[0094] S2: -5.45 (-25~25);

[0095] S3:-4.32 (-25~25).

[0096] It can be seen that the quantitative difference values across the three pressure stages are similar, consistent with the observation that the difference in area between the real-time pressure curve and the baseline pressure curve observed visually on a pressure monitor is similar across different pressure stages. The amplitude of the quantitative difference value in the low-pressure stage is significantly reduced, closer to the middle of the threshold range, and more consistent with the actual situation of crimping force quality assessment at this time. The sensitivity of the quantitative difference value across the three stages is consistent, improving the accuracy of crimping force quality assessment while reducing the difficulty of threshold setting, thereby enhancing the stability and reliability of crimping force quality assessment.

[0097] The quality assessment method of the monitoring signal of the embodiment of the present application, when the monitoring signal is a crimping signal, collects the sampling values of the real-time pressure curve and the reference pressure curve of the crimping process according to a preset sampling period, divides the real-time pressure curve into a low-pressure stage, a climbing stage and a peak stage according to the time division points corresponding to the pressure stage of the reference pressure curve, calculates the quantitative difference area of the real-time pressure curve and the reference pressure curve in different pressure stages, divides the quantitative difference area by the product of the number of sampling points in the corresponding stage and the peak value of the reference pressure curve, and obtains the quantitative difference value of the different pressure stages. This method is not affected by the fact that the area of the reference pressure curve in the low-pressure stage is too small, reduces the calculation sensitivity of the quantitative difference value in the low-pressure stage, and the calculation result of the quantitative difference value is more consistent with the actual situation of the crimping force, effectively improving the stability and reliability of the crimping force quality assessment.

[0098] See also Figure 6 , the embodiment of the present application further proposes a monitoring signal quality assessment system, comprising:

[0099] The reference signal acquisition unit 10 is used to acquire the signal curve of the monitoring signal multiple times to obtain a reference signal curve.

[0100] The signal dividing unit 20 is configured to divide the reference signal curve into an initial stage, a climbing stage and a peak stage based on the peak value of the reference signal curve and a preset key ratio value of the peak value.

[0101] The difference area calculation unit 30 is used to obtain the real-time signal curve of the monitoring signal and calculate the difference area between the real-time signal curve and the reference signal curve at different stages.

[0102] The difference value calculation unit 40 is used to divide the difference area of each stage by the product of the duration of the corresponding stage and the peak value of the reference signal curve to obtain the difference value of the real-time signal curve and the reference signal curve in different stages.

[0103] In one embodiment, when the monitoring signal is a crimping signal:

[0104] The reference signal acquisition unit 10 is specifically configured to acquire pressure curves of multiple crimping processes through a pressure monitor to obtain a reference pressure curve.

[0105] The signal dividing unit 20 is specifically configured to divide the reference pressure curve into a low pressure stage, a climbing stage and a peak stage based on the peak value of the reference pressure curve and a preset key ratio value of the peak value.

[0106] The difference area calculation unit 30 is specifically configured to obtain a real-time pressure curve during the crimping process, and calculate the difference areas between the real-time pressure curve and the reference pressure curve at different pressure stages.

[0107] The difference value calculation unit 40 is specifically used to divide the difference area of each pressure stage by the product of the duration of the corresponding pressure stage and the peak value of the reference pressure curve to obtain the difference value between the real-time pressure curve and the reference pressure curve in different pressure stages.

[0108] In one embodiment, the difference area calculation unit 30 includes:

[0109] A sampling unit, configured to obtain a real-time pressure curve during the crimping process, and collect sampling values of the real-time pressure curve and the reference pressure curve according to a preset sampling period;

[0110] The summation calculation unit is used to calculate the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve at different pressure stages, and use the sum of the difference values as the difference area of the real-time pressure curve and the reference pressure curve at different pressure stages.

[0111] In one embodiment, the difference value calculation unit 40 includes:

[0112] a product calculation unit, configured to calculate the product of the number of sampling points at different pressure stages and the peak value of the reference pressure curve;

[0113] The comparison unit is used to divide the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve at different pressure stages by the product of the number of sampling points in the corresponding pressure stage and the peak value of the reference pressure curve to obtain the quantitative difference values between the real-time pressure curve and the reference pressure curve at different pressure stages.

[0114] In one embodiment, the comparison unit is specifically used to calculate:

[0115] ;

[0116] ;

[0117] ;

[0118] in, Indicates the The stress stage, Respectively represent The start and end time of each stress phase, Indicates the real-time pressure curve at the sampling time The pressure value, Indicates the reference pressure curve at the sampling time The pressure value, Indicates in The sum of the difference values between the real-time pressure curve and the reference pressure curve sampling values in each pressure stage; represents the peak value of the reference pressure curve, Indicates the The number of sampling points in each pressure stage, Indicates that the real-time pressure curve and the reference pressure curve are in the The quantitative difference value of each pressure stage.

[0119] In one embodiment, the signal division unit 20 is further used to divide the reference pressure curve into a low pressure stage corresponding to a pressure value between [10% and 50%] of the peak value, a climbing stage corresponding to a pressure value between [50% and 90%] of the peak value, and a peak stage corresponding to a pressure value between [90% of the rising edge and 90% of the falling edge] of the peak value based on the peak value of the reference pressure curve and the preset key ratio value of the peak value.

[0120] In one embodiment, the reference signal acquisition unit 10 includes:

[0121] A pressure curve acquisition unit, used for acquiring a plurality of pressure curves of the crimping process through a pressure monitor;

[0122] The curve synthesis unit is used to select multiple pressure curves that meet the quality indicators from the multiple pressure curves to synthesize the reference pressure curve of the crimping process.

[0123] The specific process of each unit executing the above corresponding steps has been described in detail in the above method embodiment, and will not be repeated here for the sake of brevity.

[0124] An embodiment of the present application further provides a computer device, which includes a processor and a memory, wherein the memory stores a computer program, and when the computer program is loaded and executed by the processor, the method steps described in any of the above method embodiments are implemented.

[0125] An embodiment of the present application further provides a computer storage medium, wherein the computer storage medium stores a computer program. When the computer program is executed, the method steps described in any one of the above method embodiments are implemented.

[0126] In the above embodiments provided by the present invention, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0127] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0128] In addition, the functional units in the various embodiments of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or in the form of software functional units. If the integrated units are implemented in the form of software functional units and sold or used as independent products, they may be stored in a computer-readable storage medium.

[0129] Based on this understanding, the technical solution of this application, or the contributing part, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a mobile terminal, personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of this application. The aforementioned storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc., various media that can store program code.

[0130] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the concept of the technical solution of the present invention, should be covered by the scope of protection of the present invention.

[0131] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A method for evaluating the quality of a monitoring signal, characterized in that: include: Acquire the signal curve of the monitoring signal multiple times to obtain a reference signal curve; Dividing the reference signal curve into an initial stage, a climbing stage, and a peak stage based on the peak value of the reference signal curve and a preset key ratio value of the peak value; Obtaining a real-time signal curve of the monitoring signal, and calculating the difference area between the real-time signal curve and the reference signal curve at different stages; Dividing the difference area of each stage by the product of the duration of the corresponding stage and the peak value of the reference signal curve to obtain the difference value between the real-time signal curve and the reference signal curve at different stages; When the monitoring signal is a crimping signal, the method comprises: The pressure curves of multiple crimping processes are acquired through a pressure monitor to obtain a reference pressure curve; Dividing the reference pressure curve into a low pressure stage, a climbing stage, and a peak stage based on the peak value of the reference pressure curve and a preset key ratio value of the peak value; Obtaining a real-time pressure curve during the crimping process, and calculating the difference areas between the real-time pressure curve and the reference pressure curve at different pressure stages; Dividing the difference area of each pressure stage by the product of the duration of the corresponding pressure stage and the peak value of the reference pressure curve to obtain the difference value between the real-time pressure curve and the reference pressure curve in different pressure stages; The real-time pressure curve of the crimping process is obtained, and the difference area between the real-time pressure curve and the reference pressure curve at different pressure stages is calculated as follows: Obtaining a real-time pressure curve of the crimping process, and collecting sampling values of the real-time pressure curve and the reference pressure curve according to a preset sampling period; Calculating the sum of difference values between the sampling values of the real-time pressure curve and the reference pressure curve at different pressure stages, and using the sum of the difference values as the difference area between the real-time pressure curve and the reference pressure curve at different pressure stages; The difference area of each pressure stage is divided by the product of the duration of the corresponding pressure stage and the peak value of the reference pressure curve to obtain the difference value between the real-time pressure curve and the reference pressure curve in different pressure stages: Calculating the product of the number of sampling points at different pressure stages and the peak value of the reference pressure curve; The sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve at different pressure stages is divided by the product of the number of sampling points in the corresponding pressure stage and the peak value of the reference pressure curve to obtain the quantitative difference value between the real-time pressure curve and the reference pressure curve at different pressure stages.

2. The method according to claim 1, characterized in that The sum of the difference values between the sampling values of the real-time pressure curve and the reference pressure curve at different pressure stages is divided by the product of the number of sampling points in the corresponding pressure stage and the peak value of the reference pressure curve to obtain the quantitative difference values between the real-time pressure curve and the reference pressure curve at different pressure stages: ； ； ； in, Indicates the The stress stage, Respectively represent The start and end time of each stress phase, Indicates the real-time pressure curve at the sampling time The pressure value, Indicates the reference pressure curve at the sampling time The pressure value, Indicates in The sum of the difference values between the real-time pressure curve and the reference pressure curve sampling values in each pressure stage; represents the peak value of the reference pressure curve, Indicates the The number of sampling points in each pressure stage, Indicates that the real-time pressure curve and the reference pressure curve are in the The quantitative difference value of each pressure stage.

3. The method according to claim 1, characterized in that The method of dividing the reference pressure curve into a low pressure stage, a climbing stage and a peak stage based on the peak value of the reference pressure curve and the key ratio value preset at the peak value is specifically as follows: The reference pressure curve is divided into a low-pressure stage corresponding to a pressure value between [10% and 50%] of the peak value, a climbing stage corresponding to a pressure value between [50% and 90%] of the peak value, and a peak stage corresponding to a pressure value between [90% of the rising edge and 90% of the falling edge] of the peak value based on the peak value of the reference pressure curve and the preset key ratio value of the peak value.

4. The method according to claim 1, wherein The pressure curves of the multiple crimping processes are obtained by the pressure monitor to obtain the reference pressure curve, which includes: Obtain several pressure curves during the crimping process through a pressure monitor; A plurality of pressure curves meeting the quality index are selected from the plurality of pressure curves to synthesize a reference pressure curve for the crimping process.

5. A monitoring signal quality assessment system, characterized in that: include: A reference signal acquisition unit, configured to acquire a signal curve of the monitoring signal multiple times to obtain a reference signal curve; a signal dividing unit, configured to divide the reference signal curve into an initial stage, a climbing stage, and a peak stage based on a peak value of the reference signal curve and a preset key ratio value of the peak value; a difference area calculation unit, configured to obtain a real-time signal curve of the monitoring signal and calculate the difference areas between the real-time signal curve and the reference signal curve at different stages; a difference value calculation unit, configured to divide the difference area of each stage by the product of the duration of the corresponding stage and the peak value of the reference signal curve, to obtain difference values between the real-time signal curve and the reference signal curve at different stages; When the monitoring signal is a crimping signal: The reference signal acquisition unit is specifically used to acquire pressure curves of multiple crimping processes through a pressure monitor to obtain a reference pressure curve; The signal division unit is specifically configured to divide the reference pressure curve into a low pressure stage, a climbing stage, and a peak stage based on the peak value of the reference pressure curve and a preset key ratio value of the peak value; The difference area calculation unit is specifically used to obtain the real-time pressure curve of the crimping process, and calculate the difference area between the real-time pressure curve and the reference pressure curve at different pressure stages; The difference value calculation unit is specifically configured to divide the difference area of each pressure stage by the product of the duration of the corresponding pressure stage and the peak value of the reference pressure curve to obtain the difference value between the real-time pressure curve and the reference pressure curve at different pressure stages; The difference area calculation unit includes: A sampling unit, configured to obtain a real-time pressure curve during the crimping process, and collect sampling values of the real-time pressure curve and the reference pressure curve according to a preset sampling period; a summation calculation unit, configured to calculate the sum of difference values between the sampling values of the real-time pressure curve and the reference pressure curve at different pressure stages, and use the sum of the difference values as the difference area between the real-time pressure curve and the reference pressure curve at different pressure stages; The difference value calculation unit includes: a product calculation unit, configured to calculate the product of the number of sampling points at different pressure stages and the peak value of the reference pressure curve; The comparison unit is used to divide the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve at different pressure stages by the product of the number of sampling points in the corresponding pressure stage and the peak value of the reference pressure curve to obtain the quantitative difference values between the real-time pressure curve and the reference pressure curve at different pressure stages.

6. A computer device, characterized in that: The computer device includes a processor and a memory, wherein a computer program is stored in the memory, and when the computer program is loaded and executed by the processor, the computer program implements the method according to any one of claims 1 to 4.

7. A computer storage medium, characterized in that The computer storage medium stores a computer program, and when the computer program is executed, the method according to any one of claims 1 to 4 is implemented.

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