Quality evaluation method and system for monitoring signal

Abstract

The invention provides a monitoring signal quality evaluation method and system, and the method comprises the steps: obtaining a signal curve of a monitoring signal for multiple times, obtaining a reference signal curve, dividing the reference signal curve into an initial stage, a rising stage and a peak stage according to a peak value of the reference signal curve and a preset key proportion value of the peak value, acquiring a real-time signal curve of the monitoring signal, calculating the difference areas of the real-time signal curve and the reference signal curve in different stages, and 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 values of the real-time signal curve and the reference signal curve in different stages; the method is not influenced by the area of the reference signal curve in different stages, and the sensitivity of the difference values of the real-time signal curve and the reference signal curve in different stages tends to be consistent, so that the accuracy of monitoring signal quality evaluation is improved.

Description

Technical Field

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

[0002] In the crimping process, crimping force monitoring is a technique for monitoring and evaluating the force in the crimping process. By analyzing the waveform of the crimping force, it is judged whether the quality of a single crimping operation is qualified from the perspective of the crimping force. Currently, the quality assessment method of the crimping force usually calculates the ratio of the difference area between the actual curve and the reference curve in each region to the area of the reference curve in each region as the difference value of that region.

[0003] In the initial crimping region with a small pressure value, since the area of the reference curve in this region is small, minor interference will cause the quantization difference to be amplified, resulting in misjudgment and reducing the stability and reliability of the system. At the same time, due to the large difference in the areas of the reference curves in different regions, the same difference will result in quite different difference values calculated in different regions, with inconsistent sensitivities, making it difficult to set or wrongly setting the difference threshold. Summary of the Invention

[0004] The present invention provides a method, system, computer device, and storage medium for quality assessment of monitored signals, which are not affected by the area of the reference signal curve in different stages, and the sensitivities of the difference values between the real-time signal curve and the reference signal curve in different stages are consistent, thereby improving the accuracy of the quality assessment of the monitored signals.

[0005] In a first aspect, the present invention proposes a method for quality assessment of monitored signals, including: Obtaining the signal curve of the monitored 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 the real-time signal curve of the monitored signal, and calculating the difference areas between the real-time signal curve and the reference signal curve in 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 values between the real-time signal curve and the reference signal curve in different stages.

[0006] In one embodiment, when the monitored signal is a crimping signal, the method includes: Obtaining the pressure curve of multiple crimping processes through a pressure monitor to obtain a reference pressure curve; Divide the reference pressure curve into a low-pressure stage, a climbing stage, and a peak stage based on the peak of the reference pressure curve and a preset key ratio value of the peak; Obtain the real-time pressure curve of the crimping process, and calculate the difference areas between the real-time pressure curve and the reference pressure curve in different pressure stages; Divide the difference area of each pressure stage by the product of the duration of the corresponding pressure stage and the peak of the reference pressure curve to obtain the difference values between the real-time pressure curve and the reference pressure curve in different pressure stages.

[0007] In one embodiment, the obtaining the real-time pressure curve of the crimping process and calculating the difference areas between the real-time pressure curve and the reference pressure curve in different pressure stages specifically are: Obtain the real-time pressure curve of the crimping process, and collect the sampling values of the real-time pressure curve and the reference pressure curve according to a preset sampling period; Calculate the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve in different pressure stages, and use the sum of the difference values as the difference areas between the real-time pressure curve and the reference pressure curve in different pressure stages.

[0008] In one embodiment, the dividing the difference area of each pressure stage by the product of the duration of the corresponding pressure stage and the peak of the reference pressure curve to obtain the difference values between the real-time pressure curve and the reference pressure curve in different pressure stages specifically are: Calculate the product of the number of sampling points in different pressure stages and the peak of the reference pressure curve; Divide the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve in different pressure stages by the product of the number of sampling points in the corresponding pressure stage and the peak of the reference pressure curve to obtain the quantified difference values between the real-time pressure curve and the reference pressure curve in different pressure stages.

[0009] In one embodiment, the dividing the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve in different pressure stages by the product of the number of sampling points in the corresponding pressure stage and the peak of the reference pressure curve to obtain the quantified difference values between the real-time pressure curve and the reference pressure curve in different pressure stages specifically are: ; ; ; Wherein, represents the th pressure stage, respectively represent the start time and end time of the th pressure stage, represents the pressure value of the real-time pressure curve at the sampling moment ; represents the pressure value of the reference pressure curve at the sampling moment ; represents the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve in the th pressure stage; represents the peak value of the reference pressure curve, represents the th number of sampling points in the pressure stage, represents the quantization difference value of the real-time pressure curve and the reference pressure curve in the th pressure stage.

[0010] In one embodiment, dividing the reference pressure curve into a low-pressure stage, a climbing stage, and a peak stage by the peak value of the reference pressure curve and a key proportional value preset for the peak value is specifically as follows: Divide the reference pressure curve into a low-pressure stage corresponding to a pressure value in [10% - 50%] of the peak value, a climbing stage corresponding to a pressure value in [50% - 90%] of the peak value, and a peak stage corresponding to a pressure value in [rising edge 90% - falling edge 90%] of the peak value by the peak value of the reference pressure curve and a key proportional value preset for the peak value.

[0011] In one embodiment, obtaining the reference pressure curve by the pressure monitor acquiring the pressure curves of multiple crimping processes includes: Acquire a number of pressure curves of the crimping process by the pressure monitor; Select multiple pressure curves that meet the quality indicators from the number of pressure curves to synthesize the reference pressure curve of the crimping process.

[0012] In a second aspect, the present invention also proposes a quality evaluation system for monitoring signals, including: A reference signal acquisition unit for acquiring the signal curves of the monitoring signal multiple times to obtain a reference signal curve; A signal division unit for dividing the reference signal curve into an initial stage, a climbing stage, and a peak stage by the peak value of the reference signal curve and a key proportional value preset for the peak value; A difference area calculation unit for acquiring the real-time signal curve of the monitoring signal and calculating the difference areas of the real-time signal curve and the reference signal curve in different stages; A difference value calculation unit is 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, so as to obtain the difference values between the real-time signal curve and the reference signal curve at different stages.

[0013] In a third aspect, the present invention further provides a computer device, which includes a processor and a memory. A computer program is stored in the memory, and when the computer program is loaded and executed by the processor, the method described in any one of the above is implemented.

[0014] In a fourth aspect, the present invention further provides a computer storage medium, in which a computer program is stored, and when the computer program is executed, the method described in any one of the above is implemented.

[0015] A method, system, computer device and storage medium for quality assessment of monitoring signals according to the present invention, obtain the signal curves of the 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 according to the peak value of the reference signal curve and a preset key ratio value of the peak value, obtain the real-time signal curve of the monitoring signal, calculate the difference areas 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, so as to obtain the difference values between the real-time signal curve and the reference signal curve at different stages; not affected by the area of the reference signal curve in different stages, the sensitivity of the difference values between the real-time signal curve and the reference signal curve at different stages tends to be consistent, thereby improving the accuracy of the quality assessment of the monitoring signal. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces the drawings required to be used in the embodiments. The drawings in the following description are only the corresponding drawings of some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings of other embodiments can also be obtained according to these drawings.

[0017] Figure 1 It is a flowchart of the method for quality assessment of monitoring signals in one embodiment of the present invention; Figure 2 It is a flowchart of the method for quality assessment of monitoring signals when the monitoring signal is a crimping signal in one embodiment of the present invention; Figure 3 It is a schematic diagram of the calculation of the difference value in one embodiment of the present invention; Figure 4 It is a result display diagram on a pressure monitor according to the existing difference value calculation method in one embodiment of the present invention; Figure 5 In one embodiment of the present invention, it is a result display diagram of the difference value calculation method according to the present invention on a pressure monitor; Figure 6 In one embodiment of the present invention, it is a system block diagram of a monitoring signal quality assessment system. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs.

[0020] See Figure 1 , in one embodiment of a method for assessing the quality of a monitoring signal of the present invention, it includes: S101. Obtain the signal curves of the monitoring signal multiple times to obtain a reference signal curve.

[0021] The monitoring signal is specifically a monitoring signal of a detection object in the field of quality detection involving differential comparison of a real-time signal curve and a reference signal curve, including various application fields, such as the crimping field, the stamping field, etc.

[0022] Stamping is a manufacturing process that uses a mold to apply pressure to a sheet to form a specific shape, and is widely used in industries such as automobiles, home appliances, and electronic devices. In this process, monitoring and analyzing the change of stamping pressure is crucial for ensuring product quality. In the crimping field, such as wire harness connectors are widely used in the fields of automobiles, electronic devices, aerospace, etc., and the insertion and extraction force detection of wire harness connectors is one of the important indicators for evaluating the quality and performance of connectors.

[0023] Specifically, taking the crimping signal in the crimping field as an example of the monitoring signal, obtain the pressure curves of multiple crimping processes through a pressure monitor to obtain a reference pressure curve. Crimping force monitoring is a technology used to monitor and evaluate the force in the crimping process. By analyzing the waveform of the force in the crimping process, it is judged whether the quality of a single crimping operation is qualified.

[0024] S102. 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 key proportional value preset for the peak value.

[0025] Specifically, when the detection signal is a crimping signal, the reference pressure curve is divided 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.

[0026] S103. Obtain the real-time signal curve of the monitoring signal, and calculate the differential areas of the real-time signal curve and the reference signal curve in different stages.

[0027] Specifically, when the detection signal is a crimping signal, obtain the real-time pressure curve of the crimping process, and calculate the differential areas of the real-time pressure curve and the reference pressure curve in different pressure stages. The differential area is the area of the region formed between the two curves of the real-time pressure curve and the reference pressure curve in different pressure stages.

[0028] S104. Divide the differential area of each stage by the product of the duration of the corresponding stage and the peak value of the reference signal curve respectively to obtain the differential values of the real-time signal curve and the reference signal curve in different stages.

[0029] Specifically, when the detection signal is a crimping signal, divide the differential 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 respectively to obtain the differential values of the real-time pressure curve and the reference pressure curve in different pressure stages. By replacing the area of the reference pressure curve in different pressure stages in the prior art with the product of the duration of different pressure stages and the peak value of the reference pressure curve as the comparison factor for the differential area, the calculation of the differential value is no longer affected by the area of the reference pressure curve in different stages, and the sensitivity of the differential values in different pressure stages tends to be consistent, thereby facilitating the quality assessment of the crimping force in different pressure stages and improving the accuracy of the quality assessment of the crimping force during the crimping process.

[0030] The quality assessment method for the monitoring signal in this embodiment can be applied to various quality detection fields involving the differential comparison of the real-time signal curve and the reference signal curve. Segment the reference signal curve and the real-time signal curve based on the peak value of the reference signal curve and the preset key ratio value of the peak value, perform segmented analysis on the real-time signal curve, and use the product of the duration of different stages and the peak value of the reference pressure curve as the comparison factor for the differential area to obtain the differential values of different stages. This method is not affected by the area of the reference signal region in different stages of the monitoring signal, making the sensitivity of the differential values in different stages tend to be consistent, thereby effectively improving the accuracy of the quality assessment of the monitoring signal.

[0031] See Figure 2 , in one embodiment, when the monitoring signal is a crimping signal, the quality assessment method for the monitoring signal includes: S201. Obtain a plurality of pressure curves of the crimping process through a pressure monitor.

[0032] Further, the crimping process includes the crimping process of the wire harness interface.

[0033] S202, Select multiple pressure curves that meet the quality indicators from the several pressure curves and synthesize the reference pressure curve of the crimping process.

[0034] S203, Divide the reference pressure curve into a low-pressure stage, a rising stage, and a peak stage based on the peak value of the reference pressure curve and the key proportional values preset for the peak value.

[0035] During the crimping process of the wire harness interface, the crimping force does not occur overnight. It will go through a process of rising steadily 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 different pressure stages for separate analysis can effectively evaluate the quality of the crimping process.

[0036] In one embodiment, 10%, 50%, and 90% are used as the key proportional values preset for the peak value of the reference pressure curve. Specifically, the reference pressure curve is divided into a low-pressure stage corresponding to a pressure value in [10% - 50%] of the peak value, a rising stage corresponding to a pressure value in [50% - 90%] of the peak value, and a peak stage corresponding to a pressure value in [rising edge 90% - falling edge 90%] of the peak value.

[0037] Among them, the setting of the key proportional values can be adjusted according to the actual application scenario. For example, in a certain application scenario where the crimping force changes faster, 5%, 30%, and 70% can be used as the key proportional values preset for the peak value of the reference pressure curve. Correspondingly, the reference pressure curve is divided into a low-pressure stage corresponding to a pressure value in [5% - 30%] of the peak value, a rising stage corresponding to a pressure value in [30% - 70%] of the peak value, and a peak stage corresponding to a pressure value in [rising edge 70% - falling edge 70%] of the peak value. In this embodiment, no specific limitation is made on the key proportional values.

[0038] S204, Obtain the real-time pressure curve of the crimping process, and collect the sampling values of the real-time pressure curve and the reference pressure curve according to the preset sampling period.

[0039] S205, Calculate the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve in 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 in different pressure stages.

[0040] See Figure 3, 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 time division points T1, T2, and T3 corresponding to different pressure stages of the reference pressure curve. The difference area between the real-time pressure curve and the reference pressure curve in different pressure stages is calculated according to the sampling values of the real-time pressure curve L and the reference pressure curve Lref as follows: ; Among them, represents the th pressure stage, which are the low-pressure stage, the climbing stage, and the peak stage in sequence, respectively represent the start time and end time of the th pressure stage, represents the pressure value of the real-time pressure curve at the sampling moment , represents the pressure value of the reference pressure curve at the sampling moment , represents the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve in the th pressure stage.

[0041] S206, calculate the product of the number of sampling points in different pressure stages and the peak value of the reference pressure curve.

[0042] ; Among them, represents the peak value of the reference pressure curve, represents the th number of sampling points in the pressure stage.

[0043] S207, divide the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve in 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 quantization difference value between the real-time pressure curve and the reference pressure curve in different pressure stages.

[0044] ; Among them, represents the quantization difference value between the real-time pressure curve and the reference pressure curve in the th pressure stage.

[0045] In the prior art, the calculation method of the quantization difference value between the real-time pressure curve and the reference pressure curve in different pressure stages is: ; .

[0046] Among them, represents the area of the reference pressure curve at different pressure stages, specifically the quantified area based on the sampled values and the number of sampling points of the reference pressure curve.

[0047] The quantified difference value calculated by dividing the sum of the difference values of the sampled 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 at the corresponding pressure stage and the peak value of the reference pressure curve is not affected by the number of sampling points and the amplitude at different pressure stages, and shows a consistent sensitivity.

[0048] See Figure 4 and Figure 5 . In practical applications, when the specific parameters of the wire harness crimping process are: Count: 233 (OK) / 5 (NG) / 97.90% (yield); Pressure: 481 (KG) / 502.50 (KG).

[0049] See Figure 4 . According to the existing difference value calculation method, the quantified difference values of the three pressure stages are respectively: S1: -17.46 (-25~25); S2: -7.35 (-25~25); S3: -4.5 (-25~25).

[0050] It can be seen that the amplitude of the quantified difference value in the low-pressure stage is much larger than that in the climbing stage and the peak stage, while from the pressure monitor, it can be seen that the difference between the real-time pressure curve and the reference pressure curve in the low-pressure stage is not much different from that in the climbing stage and the peak stage. In this application, the real-time pressure curve changes smoothly. If the situation is slightly less stable or there is interference, the quantified difference value in the low-pressure stage is very likely to exceed the preset threshold range (-25~25). This threshold range is the range for judging whether the crimping force is qualified. If it exceeds this threshold range, it is judged as unqualified. Since the existing method is too sensitive to the quantified difference in the low-pressure stage, it is not conducive to the quality evaluation of the crimping force.

[0051] See Figure 5 . According to the difference value calculation method of the embodiment of the present application, the quantified difference values of the three pressure stages are respectively: S1: -4.75 (-25~25); S2: -5.45 (-25~25); S3: -4.32 (-25~25).

[0052] It can be seen that the quantified difference values in the three pressure stages are not very different, which is consistent with the situation that the difference area between the real-time pressure curve observed by the naked eye on the pressure monitor and the reference pressure curve is not very different in different pressure stages. The amplitude of the quantified difference value in the low-pressure stage is significantly reduced, closer to the middle value of the threshold range, and more in line with the actual situation of the crimping force quality assessment at this time. The sensitivity of the quantified difference value in the three stages tends to be consistent, improving the accuracy of the crimping force quality assessment, reducing the difficulty of threshold setting, and thus improving the stability and reliability of the crimping force quality assessment.

[0053] For the quality assessment method of the monitoring signal in the embodiment of the present application, when the monitoring signal is a crimping signal, the sampling values of the real-time pressure curve and the reference pressure curve in the crimping process are collected according to a preset sampling period. The real-time pressure curve is divided into a low-pressure stage, a climbing stage, and a peak stage according to the time division points corresponding to the pressure stages of the reference pressure curve. The quantified difference area between the real-time pressure curve and the reference pressure curve in different pressure stages is calculated, and this quantified difference area is divided by the product of the number of sampling points in the corresponding stage and the peak value of the reference pressure curve to obtain the quantified difference value in different pressure stages. This method is not affected by the too small area of the reference pressure curve in the low-pressure stage, reduces the calculation sensitivity of the quantified difference value in the low-pressure stage, and the calculation result of the quantified difference value is more in line with the actual situation of the crimping force, effectively improving the stability and reliability of the crimping force quality assessment.

[0054] See Figure 6 , the embodiment of the present application also proposes a quality assessment system for monitoring signals, including: A reference signal acquisition unit 10, configured to acquire the signal curves of the monitoring signal multiple times to obtain a reference signal curve.

[0055] A signal division unit 20, configured to divide the reference signal curve into an initial stage, a climbing stage, and a peak stage with the peak value of the reference signal curve and a preset key ratio value of the peak value.

[0056] A difference area calculation unit 30, configured to acquire 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 in different stages.

[0057] A difference value calculation unit 40, 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 the difference value between the real-time signal curve and the reference signal curve in different stages.

[0058] In one embodiment, when the monitoring signal is a crimping signal: The reference signal acquisition unit 10 is specifically configured to obtain the pressure curves of multiple crimping processes through a pressure monitor to obtain a reference pressure curve.

[0059] The signal division unit 20 is specifically configured to divide the reference pressure curve into a low-pressure stage, a climbing stage, and a peak stage by using the peak value of the reference pressure curve and a preset key ratio value of the peak value.

[0060] The differential area calculation unit 30 is specifically configured to obtain the real-time pressure curve of the crimping process and calculate the differential areas of the real-time pressure curve and the reference pressure curve in different pressure stages.

[0061] The differential value calculation unit 40 is specifically configured to divide the differential 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 differential values of the real-time pressure curve and the reference pressure curve in different pressure stages.

[0062] In one embodiment, the differential area calculation unit 30 includes: A sampling unit, configured to obtain the real-time pressure curve of the crimping process and collect the 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 the differential values of the sampling values of the real-time pressure curve and the reference pressure curve in different pressure stages, and use the sum of the differential values as the differential areas of the real-time pressure curve and the reference pressure curve in different pressure stages.

[0063] In one embodiment, the differential value calculation unit 40 includes: A product calculation unit, configured to calculate the product of the number of sampling points in different pressure stages and the peak value of the reference pressure curve; A comparison unit, configured to divide the sum of the differential values of the sampling values of the real-time pressure curve and the reference pressure curve in 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 quantified differential values of the real-time pressure curve and the reference pressure curve in different pressure stages.

[0064] In one embodiment, the comparison unit is specifically configured to calculate: ; ; ; Wherein, represents the th pressure stage, respectively represent the start time and the end time of the th pressure stage, represents the real-time pressure curve at the sampling moment The pressure value, indicating the pressure value of the reference pressure curve at the sampling moment The pressure value, indicating the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve in the th pressure stage; indicating the peak value of the reference pressure curve, indicating the th number of sampling points in the pressure stage, indicating the quantization difference value between the real-time pressure curve and the reference pressure curve in the th pressure stage.

[0065] In one embodiment, the signal division unit 20 is further configured to divide the reference pressure curve into a low-pressure stage corresponding to a pressure value in the range of [10% - 50%] of the peak value, a climbing stage corresponding to a pressure value in the range of [50% - 90%] of the peak value, and a peak stage corresponding to a pressure value in the range of [rising edge 90% - falling edge 90%] of the peak value of the reference pressure curve by using the peak value of the reference pressure curve and a preset key ratio value of the peak value.

[0066] In one embodiment, the reference signal acquisition unit 10 includes: A pressure curve acquisition unit, configured to acquire a plurality of pressure curves of the crimping process through a pressure monitor;

[0067] A curve synthesis unit, configured to select multiple pressure curves that meet the quality index from the plurality of pressure curves and synthesize the reference pressure curve of the crimping process.

[0068] Wherein, the specific processes of each unit executing the above corresponding steps have been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0069] The embodiment of the present application further provides a computer device, which includes a processor and a memory, and a computer program is stored in the memory. When the computer program is loaded and executed by the processor, the method steps described in any one of the above method embodiments are implemented.

[0070] The embodiment of the present application further provides a computer storage medium, in which a computer program is stored. When the computer program is executed, the method steps described in any one of the above method embodiments are implemented.

[0071] 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 only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0072] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0073] In addition, each functional unit in various embodiments of the present application can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units. If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.

[0074] Based on such an understanding, the technical solution of the present application, in essence, or the part that makes a contribution, 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 several instructions for causing a computer device (which can be a mobile terminal, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs, and other various media that can store program codes.

[0075] In summary, although the present invention has been disclosed above with preferred embodiments, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the concept of the technical solution of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

[0076] The technical features of the above-described embodiments may be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

Claims

1. A method for quality assessment of monitoring signals, characterized in that Including: Obtaining the signal curves 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 of the reference signal curve and a preset key ratio value of the peak; Obtaining the real-time signal curve of the monitoring signal, and calculating the difference areas of the real-time signal curve and the reference signal curve in different stages; Dividing the difference area of each stage by the product of the duration of the corresponding stage and the peak of the reference signal curve, to obtain the difference values of the real-time signal curve and the reference signal curve in different stages.

2. The method according to claim 1, characterized in that When the monitoring signal is a crimping signal, the method includes: Obtaining the pressure curves of multiple crimping processes 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 of the reference pressure curve and a preset key ratio value of the peak; Obtaining the real-time pressure curve of the crimping process, and calculating the difference areas of the real-time pressure curve and the reference pressure curve in 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 of the reference pressure curve, to obtain the difference values of the real-time pressure curve and the reference pressure curve in different pressure stages.

3. The method according to claim 2, characterized in that, The obtaining the real-time pressure curve of the crimping process and calculating the difference areas of the real-time pressure curve and the reference pressure curve in different pressure stages specifically are: Obtaining the real-time pressure curve of the crimping process, and collecting the sampling values of the real-time pressure curve and the reference pressure curve according to a preset sampling period; Calculating the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve in different pressure stages, and taking the sum of the difference values as the difference areas of the real-time pressure curve and the reference pressure curve in different pressure stages.

4. The method according to claim 3, wherein The dividing the difference area of each pressure stage by the product of the duration of the corresponding pressure stage and the peak of the reference pressure curve, to obtain the difference values of the real-time pressure curve and the reference pressure curve in different pressure stages specifically are: Calculating the product of the number of sampling points in different pressure stages and the peak of the reference pressure curve; Dividing the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve in different pressure stages by the product of the number of sampling points in the corresponding pressure stage and the peak of the reference pressure curve, to obtain the quantization difference values of the real-time pressure curve and the reference pressure curve in different pressure stages.

5. The method according to claim 4, characterized in that The dividing the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve in different pressure stages by the product of the number of sampling points in the corresponding pressure stage and the peak of the reference pressure curve, to obtain the quantization difference values of the real-time pressure curve and the reference pressure curve in different pressure stages specifically are: ； ； ； Among them, represents the th pressure stage, respectively represent the start time and end time of the th pressure stage, represents the pressure value of the real-time pressure curve at the sampling moment , represents the pressure value of the reference pressure curve at the sampling moment , represents the sum of the difference values of the sampling values of the real-time pressure curve and the reference pressure curve in the th pressure stage; represents the peak value of the reference pressure curve, represents the th number of sampling points in the pressure stage, represents the quantization difference value of the real-time pressure curve and the reference pressure curve in the th pressure stage.

6. The method according to claim 2, characterized in that The dividing the reference pressure curve into a low-pressure stage, a climbing stage, and a peak stage based on the peak of the reference pressure curve and a preset key ratio value of the peak specifically is: The reference pressure curve is divided into a low-pressure stage where the pressure value is in the range of [10% - 50%] of the peak value, a climbing stage where the pressure value is in the range of [50% - 90%] of the peak value, and a peak stage where the pressure value is in the range of [90% of the rising edge - 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 corresponding to the peak value.

7. The method according to claim 2, characterized in that, Obtaining the reference pressure curve by acquiring the pressure curves of multiple crimping processes through a pressure monitor includes: Acquiring a plurality of pressure curves of the crimping process through a pressure monitor; Selecting multiple pressure curves that meet the quality indicators from the plurality of pressure curves to synthesize the reference pressure curve of the crimping process.

8. A quality evaluation system for monitoring signals, characterized in that, Including: A reference signal acquisition unit for acquiring the signal curves of the monitoring signals multiple times to obtain a reference signal curve; A signal division unit for 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 the preset key ratio value corresponding to the peak value; A differential area calculation unit for acquiring the real-time signal curve of the monitoring signal and calculating the differential areas of the real-time signal curve and the reference signal curve in different stages; A differential value calculation unit for dividing the differential area of each stage by the product of the duration of the corresponding stage and the peak value of the reference signal curve respectively to obtain the differential values of the real-time signal curve and the reference signal curve in different stages.

9. A computer device, characterized in that, The computer device includes a processor and a memory. A computer program is stored in the memory. When the computer program is loaded and executed by the processor, the method described in any one of claims 1 to 7 is implemented.

10. A computer storage medium, characterized in that, A computer program is stored in the computer storage medium. When the computer program is executed, the method described in any one of claims 1 to 7 is implemented.

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