Vehicle quality inspection method and device, terminal equipment and storage medium

Abstract

The invention is suitable for the technical field of data processing, and provides a vehicle quality inspection method and device, terminal equipment and a storage medium, and the method comprises the steps: obtaining the actual maximum steering angles of a plurality of quality inspection vehicles of a target vehicle model and the steering angle specification information corresponding to the target vehicle model, the steering angle specification information comprises a steering angle upper limit value and a steering angle lower limit value; based on the actual maximum steering angles, the steering angle upper limit values and the steering angle lower limit values of the multiple quality inspection vehicles, the process capability index values of the quality inspection vehicles are calculated; and determining the quality inspection proportion of the to-be-delivered vehicle of the target vehicle type based on the process capability index value. When the quality inspection proportion is determined, the corresponding quality inspection proportion can be determined according to the intelligent capability index value by utilizing the process capability index value, so that the determined quality inspection proportion has more basis and is more accurate, quality inspection is performed on the maximum steering angle of the vehicle according to the quality inspection proportion, the quality inspection time of the vehicle can be saved, and the quality inspection efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the field of data processing technology, and in particular, relates to a vehicle quality inspection method, device, terminal equipment and storage medium. Background Art

[0002] The maximum steering angle of a vehicle is too large or too small, which directly affects the vehicle's handling performance. If the maximum steering angle of the vehicle is too large, the vehicle's maximum turning radius becomes smaller, causing mutual interference in the steering system's working process; if the maximum steering angle of the vehicle is too small, the maximum turning radius increases, and the vehicle's handling performance deteriorates. Therefore, it is particularly important to ensure the accuracy of the vehicle's maximum steering angle.

[0003] Currently, due to the lack of a detection strategy for the maximum steering angle of a vehicle, the maximum steering angle of each vehicle is tested during quality inspection, resulting in low vehicle quality inspection efficiency. Summary of the invention

[0004] The embodiments of the present application provide a vehicle quality inspection method, apparatus, terminal device and storage medium, which can solve the problem of low vehicle quality inspection efficiency due to the lack of a detection strategy for the maximum steering angle of the vehicle.

[0005] In a first aspect, an embodiment of the present application provides a vehicle quality inspection method, comprising:

[0006] Acquire the actual maximum steering angles of multiple quality inspection vehicles of the target vehicle type and the steering angle specification information corresponding to the target vehicle type, wherein the steering angle specification information includes an upper limit value of the steering angle and a lower limit value of the steering angle;

[0007] Calculating a process capability index value of the quality inspection vehicle based on a plurality of actual maximum steering angles of the quality inspection vehicle, the steering angle upper limit value, and the steering angle lower limit value;

[0008] Based on the process capability index value, a quality inspection ratio of the target vehicle model to be shipped is determined, wherein the quality inspection ratio is used to perform quality inspection on the maximum steering angle of the target vehicle model to be shipped.

[0009] In a second aspect, an embodiment of the present application provides a vehicle quality inspection device, including:

[0010] An information acquisition module, used to acquire actual maximum steering angles of multiple quality inspection vehicles of a target vehicle type and steering angle specification information corresponding to the target vehicle type, wherein the steering angle specification information includes a steering angle upper limit value and a steering angle lower limit value;

[0011] An index calculation module, used to calculate the process capability index value of the quality inspection vehicle based on a plurality of actual maximum steering angles of the quality inspection vehicle, the steering angle upper limit value, and the steering angle lower limit value;

[0012] The quality inspection ratio determination module is used to determine the quality inspection ratio of the vehicles of the target model to be shipped based on the process capability index value, wherein the quality inspection ratio is used to perform quality inspection on the vehicles of the target model to be shipped.

[0013] In a third aspect, an embodiment of the present application provides a terminal device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the vehicle quality inspection method described in any one of the first aspects above is implemented.

[0014] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the vehicle quality inspection method described in any one of the first aspects above is implemented.

[0015] In a fifth aspect, an embodiment of the present application provides a computer program product, which, when executed on a terminal device, enables the terminal device to execute the vehicle quality inspection method described in any one of the above-mentioned first aspects.

[0016] Compared with the prior art, the beneficial effects of the first aspect of the embodiment of the present application are as follows: obtaining the actual maximum steering angles of multiple quality inspection vehicles of the target vehicle model and the steering angle specification information corresponding to the target vehicle model, wherein the steering angle specification information includes an upper limit value and a lower limit value of the steering angle; calculating the process capability index value of the quality inspection vehicle based on the actual maximum steering angles, the upper limit value and the lower limit value of the steering angle of the multiple quality inspection vehicles; determining the quality inspection ratio of vehicles to be shipped of the target vehicle model based on the process capability index value, and finally performing quality inspection of the maximum steering angle on the vehicles to be shipped based on the quality inspection ratio.

[0017] This application utilizes the process capability index value when determining the quality inspection ratio. The process capability index value reflects the compliance rate of the quality inspection vehicles. The corresponding quality inspection ratio can be determined based on the process capability index value, making the determined quality inspection ratio more based on evidence and more accurate. Quality inspection of the vehicle's maximum steering angle based on the quality inspection ratio can save vehicle quality inspection time and improve quality inspection efficiency.

[0018] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a flow chart of a vehicle quality inspection method provided by an embodiment of the present application;

[0021] Figure 2 It is a schematic diagram showing working condition data in a data platform provided in an embodiment of the present application;

[0022] Figure 3 It is a flowchart of a method for determining a quality inspection ratio provided in an embodiment of the present application;

[0023] Figure 4 It is a flowchart of a method for updating a quality inspection ratio provided in an embodiment of the present application;

[0024] Figure 5 is a flow chart of a method for obtaining an actual maximum steering angle provided in an embodiment of the present application;

[0025] Figure 6 This is a schematic diagram of an interface of a vehicle model obtained by matching an identification code according to an embodiment of the present application;

[0026] Figure 7 is a schematic diagram of a third interface provided by an embodiment of the present application;

[0027] Figure 8 is a schematic diagram of a fourth interface provided by an embodiment of the present application;

[0028] Fig. 9 is a schematic diagram of a sixth interface provided by an embodiment of the present application;

[0029] Fig.10 is a schematic diagram of an eighth interface provided by an embodiment of the present application;

[0030] Fig.11 It is a structural schematic diagram of a vehicle quality inspection device provided in one embodiment of the present application;

[0031] Fig.12 It is a structural diagram of a terminal device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0032] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0033] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0034] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0035] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0036] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0037] Process Capability Index (CPK) is a method to indicate the level of process. Its actual function is to reflect the level of process qualification rate.

[0038] Specifically, CPK can be used to indicate the ratio of the discreteness of process products to the acceptable standard. CPK can be used to indicate the degree or capability of a process to produce products that meet the acceptable standard. The larger the CPK value, the greater the ability of the process to produce products that meet the acceptable standard.

[0039] Based on the characteristics of CPK, the present application proposes a method for calculating CPK according to the maximum steering angle, using CPK to characterize the compliance rate of the vehicle's maximum steering angle, and then determining different quality inspection ratios based on CPK. Compared with the prior art of conducting a full inspection of the vehicle's maximum steering angle, the present application provides a reasonable basis for determining the detection ratio of the maximum steering angle. At the same time, there is no need to test the maximum steering angles of all vehicles when it is not necessary, which saves quality inspection time and improves quality inspection efficiency.

[0040] Figure 1 A schematic flow chart of the vehicle quality inspection method provided by the present application is shown, referring to Figure 1 , the method is described in detail as follows:

[0041] S101, obtaining actual maximum steering angles of multiple quality inspection vehicles of a target vehicle model and steering angle specification information corresponding to the target vehicle model, wherein the steering angle specification information includes a steering angle upper limit value and a steering angle lower limit value.

[0042] In this embodiment, the target vehicle model can be selected as needed. For example, after obtaining information of a batch of vehicles, the target vehicle model is selected from the obtained vehicle information, and the vehicle information includes the vehicle model and the actual maximum steering angle.

[0043] The quality inspection vehicle is the extracted vehicle that needs quality inspection, and the quality inspection vehicle is tested to obtain the actual maximum steering angle of the quality inspection vehicle. The actual maximum steering angle is the maximum steering angle of the front wheels of the vehicle.

[0044] Specifically, the actual maximum steering angle of the inspection vehicle includes the maximum inner steering angle and the maximum outer steering angle of the target front wheel, the steering angle upper limit includes the inner steering angle upper limit and the outer steering angle upper limit, and the steering angle lower limit includes the inner steering angle lower limit and the outer steering angle lower limit. The target front wheel is the left front wheel and / or the right front wheel.

[0045] In this embodiment, the steering angle specification information corresponding to the target vehicle model specifies the interval value of the qualified maximum steering angle.

[0046] The actual maximum steering angle of the quality inspection vehicle can be obtained from the data platform. The data platform can collect the working condition data of the vehicle test site (vehicle model, actual maximum steering angle, detection time, identification code, etc.) through the collection channel. The data platform stores the collected working condition data for subsequent use. Among them, the data platform can collect the working condition data of the test site in real time or at a scheduled time. For example, Figure 2There is a database in the data platform shown, and the operating condition data is stored in the database in the form of a table, wherein vin in the table is the vehicle identification code, ecutype is the ECU type (Electronic Control Unit), supplier is the supplier, antitheftcode is the type of anti-theft function, etc.

[0047] The steering angle specification information may be pre-stored or input by a person through a human-computer interaction interface.

[0048] In this embodiment, the number of quality inspection vehicles can be set as needed. For example, the number of quality inspection vehicles can be set to 300 or 250, etc.

[0049] S102, calculating the process capability index value of the quality inspection vehicle based on a plurality of actual maximum steering angles of the quality inspection vehicle, the steering angle upper limit value, and the steering angle lower limit value.

[0050] In this embodiment, the calculation method of the process capability index value includes:

[0051] Cpk=C p ×(1-|C a |, where Cpk is the process capability index value, C p is the process precision, C a For process accuracy. T u is the upper limit of the steering angle, T L is the lower limit of the steering angle, δ is the standard deviation, and the standard deviation is determined based on the actual maximum steering angle. is the average value of the actual maximum steering angle, T m It is the center value of the steering angle upper limit and the steering angle lower limit.

[0052] In this embodiment, if the actual maximum steering angle of the quality inspection vehicle includes the maximum inner steering angle and the maximum outer steering angle of the left front wheel, the process capability index value of the quality inspection vehicle includes the process capability index value corresponding to the inner steering angle of the left front wheel and the process capability index value corresponding to the outer steering angle. If the actual maximum steering angle of the quality inspection vehicle includes the maximum inner steering angle and the maximum outer steering angle of the right front wheel, the process capability index value of the quality inspection vehicle includes the process capability index value corresponding to the inner steering angle of the right front wheel and the process capability index value corresponding to the outer steering angle. If the actual maximum steering angle of the quality inspection vehicle includes the maximum inner steering angle and the maximum outer steering angle of the left front wheel, and the maximum inner steering angle and the maximum outer steering angle of the right front wheel, the process capability index value of the quality inspection vehicle includes the process capability index value corresponding to the inner steering angle of the left front wheel, the process capability index value corresponding to the outer steering angle of the left front wheel, the process capability index value corresponding to the inner steering angle of the right front wheel, and the process capability index value corresponding to the outer steering angle of the right front wheel.

[0053] Specifically, the method for calculating the process capability index value of the steering inner angle includes: calculating the process capability index value of the steering inner angle of the quality inspection vehicle based on the maximum steering inner angle, the steering inner angle upper limit value and the steering inner angle lower limit value.

[0054] The method for calculating the process capability index value of the steering outer angle includes: calculating the process capability index value of the steering outer angle of the quality inspection vehicle based on the maximum steering outer angle, the steering outer angle upper limit value and the steering outer angle lower limit value.

[0055] In this embodiment, the method for calculating the process capability index value of the quality inspection vehicle may further include: calculating a process capability index value for each preset number of quality inspection vehicles, for example, calculating a process capability index value for the 1st to 25th quality inspection vehicles; calculating a process capability index value for the 2nd to 26th quality inspection vehicles; calculating a process capability index value for the 3rd to 27th quality inspection vehicles, and so on, to obtain multiple process capability index values.

[0056] S103, determining a quality inspection ratio of vehicles of the target vehicle model to be shipped based on the process capability index value, wherein the quality inspection ratio is used to perform quality inspection on a maximum steering angle of vehicles of the target vehicle model to be shipped.

[0057] In this embodiment, the quality inspection ratios corresponding to different process capability index values ​​are pre-stored, and the quality inspection ratio corresponding to the process capability index value calculated at the current moment can be found to obtain the quality inspection ratio corresponding to the target vehicle model. The larger the process capability index value, the smaller the corresponding quality inspection ratio.

[0058] If there are multiple process capability index values, for example, there is a process capability index value of the maximum inner steering angle corresponding to the left front wheel and a process capability index value of the maximum outer steering angle corresponding to the left front wheel, etc., then the minimum value of all calculated process capability index values ​​can be found, and the quality inspection ratio can be determined according to the minimum value of the process capability index. Alternatively, the average value of all intelligent capability index values ​​can be calculated, and the quality inspection ratio can be determined according to the average value.

[0059] In this embodiment, the method for obtaining the quality inspection ratio may further include: if the process capability index value is greater than the preset value, the first preset ratio is determined as the quality inspection ratio of the target vehicle model to be shipped. If the process capability index value is less than or equal to the preset value, the second preset ratio is determined as the quality inspection ratio of the target vehicle model to be shipped. The preset value, the first preset ratio and the second preset ratio can be set as needed. For example, the preset value can be set to 1.33 or 1.34, etc. The first preset ratio can be 5% or 6%, etc. The second preset ratio can be 100% or 98%, etc.

[0060] In an embodiment of the present application, the actual maximum steering angles of multiple quality inspection vehicles of the target vehicle model and the steering angle specification information corresponding to the target vehicle model are obtained, wherein the steering angle specification information includes the steering angle upper limit value and the steering angle lower limit value; based on the actual maximum steering angles of multiple quality inspection vehicles, the steering angle upper limit value and the steering angle lower limit value, the process capability index value of the quality inspection vehicle is calculated; based on the process capability index value, the quality inspection ratio of the target vehicle model to be shipped is determined, and finally, based on the quality inspection ratio, the maximum steering angle of the vehicles to be shipped is quality inspected. When determining the quality inspection ratio, the present application utilizes the process capability index value, which reflects the compliance rate of the quality inspection vehicle. The corresponding quality inspection ratio can be determined according to the process capability index value, so that the determined quality inspection ratio is more based on evidence and more accurate. Quality inspection of the maximum steering angle of the vehicle according to the quality inspection ratio can save vehicle quality inspection time and improve quality inspection efficiency.

[0061] like Figure 3 As shown, in a possible implementation manner, the implementation process of step S103 may include:

[0062] S1031, obtaining a first steering angle qualification rate of the plurality of inspection vehicles, wherein the first steering angle qualification rate is determined based on an actual maximum steering angle of each inspection vehicle.

[0063] In this embodiment, after the inspection vehicle is tested to obtain the actual maximum steering angle of the inspection vehicle, if the actual maximum steering angle is within the steering angle interval specified in the steering angle specification information, the steering angle of the inspection vehicle is determined to be qualified; if the actual maximum steering angle is not within the steering angle interval specified in the steering angle specification information, the steering angle of the inspection vehicle is determined to be unqualified. The number of vehicles with qualified steering angles among the multiple inspection vehicles is counted, and the first steering angle qualified rate of the inspection vehicles is determined based on the number of vehicles with qualified steering angles and the total number of inspection vehicles.

[0064] S1032: If the process capability index value is greater than or equal to a preset value, and the first steering angle qualification rate is greater than or equal to a first preset probability, a first preset ratio is determined as the quality inspection ratio of the target vehicle model to be shipped.

[0065] In this embodiment, the larger the process capability index value is, the more qualified products there are. Therefore, if the process capability index value is greater than or equal to the preset value, it means that the quality inspection vehicle meets the requirements. If the process capability index value is greater than or equal to the preset value and the first steering angle qualified rate is greater than or equal to the first preset probability, it means that the quality of the quality inspection vehicle is very good and meets the requirements. The quality inspection ratio can be reduced to improve the quality inspection efficiency. For example, if the current quality inspection ratio is 100% (full inspection), the quality inspection ratio can be reduced to 5%.

[0066] S1033: If the process capability index value is less than the preset value, and / or the first steering angle pass rate is less than the first preset probability, a second preset ratio is determined as the quality inspection ratio of the target vehicle model to be shipped, wherein the second preset ratio is greater than the first preset ratio.

[0067] In this embodiment, if the process capability index value is less than the preset value, and / or the first steering angle pass rate is less than the first preset probability, it means that there are many unqualified products in the quality inspection vehicles of this batch, and the quality inspection ratio can be increased to ensure the quality of the vehicles. For example, if the current quality inspection ratio is 5%, the quality inspection ratio can be increased to 100%.

[0068] In a possible implementation, after step S1031, step S103 may further include:

[0069] Find the quality inspection ratio corresponding to the process capability index value and the first steering angle qualified rate, and use the quality inspection ratio corresponding to the process capability index value and the first steering angle qualified rate as the quality inspection ratio of the target vehicle model to be shipped. Pre-store different quality inspection ratios corresponding to the process capability index value and the first steering angle qualified rate.

[0070] like Figure 4 As shown, in a possible implementation, after step S1032, the method may further include:

[0071] S201, obtaining a second steering angle qualification rate of the randomly inspected vehicles, wherein the randomly inspected vehicles are the vehicles to be shipped that are randomly inspected based on the first preset ratio.

[0072] In this embodiment, a first preset ratio of vehicles is randomly selected from the vehicles to be shipped out for quality inspection, for example, 5% of the vehicles are randomly selected for quality inspection, and the steering angle qualification rate of the randomly selected vehicles is detected, and the steering angle qualification rate of the randomly selected vehicles is recorded as the second steering angle qualification rate. The calculation method of the second steering angle qualification rate is the same as the calculation method of the first steering angle qualification rate, and please refer to the calculation method of the first steering angle qualification rate.

[0073] S202: If the second steering angle qualification rate is less than the second preset probability, updating the quality inspection ratio of the vehicles to be shipped from the factory from the first preset ratio to the second preset ratio.

[0074] In this embodiment, the second preset probability can be set as needed, for example, the second preset probability can be set to 100% or 95%, etc. If the second steering angle qualified rate is less than the second preset probability, it is determined that the qualified rate of the sampled vehicles does not meet the requirements, and the quality inspection ratio needs to be increased. For example, if the first preset ratio is 5%, the quality inspection ratio is increased to the second preset ratio, and the second preset ratio can be 100% or 98%, etc.

[0075] If the second steering angle pass rate is greater than or equal to the second preset probability, the sampling ratio is maintained at the first preset ratio.

[0076] In the embodiment of the present application, after the quality inspection ratio is determined, vehicle quality inspection is performed according to the quality inspection ratio, and the quality inspection ratio is adjusted in time to ensure the quality of vehicles to be shipped out of the factory.

[0077] In a possible implementation, after step S1032, the method may further include:

[0078] Obtain the second steering angle pass rate of the sampled vehicle and the actual maximum steering angle of the sampled vehicle. Calculate the process capability index value of the sampled vehicle based on the actual maximum steering angle of the sampled vehicle. If the second steering angle pass rate is less than the second preset probability, and / or the process capability index value of the sampled vehicle is less than the preset value, then update the quality inspection ratio of the vehicle to be shipped from the first preset ratio to the second preset ratio. If the second steering angle pass rate is greater than or equal to the second preset probability, and the process capability index value of the sampled vehicle is greater than or equal to the preset value, then maintain the quality inspection ratio at the first preset ratio.

[0079] like Figure 5As shown, in a possible implementation, the method for obtaining the actual maximum steering angles of multiple quality inspection vehicles of the target vehicle type in step S101 includes:

[0080] S301, obtaining actual maximum steering angles of multiple tested vehicles and an identification code of each of the tested vehicles.

[0081] In this embodiment, the tested vehicles may be vehicles of multiple models. The identification code is the VIN code (Vehicle Identification Number) of the vehicle, and each tested vehicle corresponds to an identification code.

[0082] S302: Match the model of the tested vehicles based on the identification code to obtain the model of each of the tested vehicles.

[0083] In this embodiment, the identification code is used to automatically match the model of the tested vehicle, for example, the model of the tested vehicle is matched from the database through an interface, such as Figure 6 The part circled in the middle rectangle is the model of each tested vehicle.

[0084] S303: extracting a plurality of quality inspection vehicles of the target vehicle type and an actual maximum steering angle of each of the quality inspection vehicles from the vehicle types of the tested vehicles.

[0085] In this embodiment, the model is automatically matched according to the identification code, so that the model of the tested vehicle can be determined quickly and accurately, which reduces the time of manual search for the model and improves the efficiency of determining the quality inspection ratio.

[0086] In a possible implementation, the method for obtaining the steering angle specification information corresponding to the target vehicle model in step S101 includes:

[0087] S401, displaying a first interface, wherein the first interface includes a steering angle model option.

[0088] In this embodiment, a small program for collecting various information of the vehicle is installed in the electronic device. After the user clicks on the small program, the first interface is displayed. The steering angle model option in the first interface is an option for calculating the process capability index value.

[0089] S402: In response to the steering angle model option being triggered, displaying a second interface, wherein the second interface includes parameter configuration options.

[0090] In this embodiment, after the user clicks the steering angle model option, the steering angle model option is triggered. The parameter configuration option is used to display various information of the quality inspection vehicle, such as the production plant, model, upper limit of inner angle specification, upper limit of outer angle specification, lower limit of inner angle specification and lower limit of outer angle specification of the quality inspection vehicle.

[0091] S403, in response to the parameter configuration option being triggered, displaying a third interface, wherein the third interface includes a target vehicle model label and a steering angle editing option.

[0092] In this embodiment, after the user clicks on the parameter configuration option, the parameter configuration option is triggered. After the parameter option is triggered, various information of the quality inspection vehicle is automatically counted. For example, Figure 7 The third interface is shown, in which the production plant, model, upper limit of inner angle specification, upper limit of outer angle specification, lower limit of inner angle specification and lower limit of outer angle specification of the quality inspection vehicle are displayed.

[0093] The steering angle editing option in the third interface is used by the user to edit the upper and lower limits of the steering angle.

[0094] S404, in response to the steering angle editing option being triggered, the fourth interface is displayed, the fourth interface including a steering angle upper limit value setting option and a steering angle lower limit value setting option, the steering angle upper limit value setting option is used to receive the steering angle upper limit value input by the user, and the steering angle lower limit value setting option is used to receive the steering angle lower limit value input by the user.

[0095] In this embodiment, after the steering angle editing option is triggered, the fourth interface displayed is used to receive the upper and lower limits of the steering angle set by the user, for example, Figure 8 The fourth interface shown, the fourth interface contains the inner angle specification upper limit, outer angle specification upper limit, inner angle specification lower limit and outer angle specification lower limit, among which, the inner angle specification upper limit, outer angle specification upper limit, inner angle specification lower limit and outer angle specification lower limit in the fourth interface are editable data boxes, and the factory and model in the fourth interface are non-editable data boxes. The factory and model in the fourth interface are set for the user's convenience to set the upper and lower limits of the steering angle according to the model.

[0096] S405, obtaining the steering angle upper limit value input by the steering angle upper limit value setting option and the steering angle lower limit value input by the steering angle lower limit value setting option, and obtaining the steering angle specification information corresponding to the target vehicle model.

[0097] In this embodiment, after obtaining the steering angle specification information, clicking a calculation button can implement the process of calculating the process capability index value in the above step S102.

[0098] In a possible implementation, in order to facilitate observation of changes in process capability index values ​​over a period of time, and also to facilitate querying changes in process capability index values ​​over a historical period of time, a model trend option is also provided in the second interface.

[0099] Specifically, the method of displaying the change process of the process capability index value may include:

[0100] S501, in response to the model trend option being triggered, displaying a fifth interface, the fifth interface including a real-time trend option and a historical trend option.

[0101] S502, in response to the real-time trend option being triggered, a sixth interface is displayed, wherein the sixth interface is used to show the change trend of the process capability index value of the target vehicle model within a first preset time period, wherein the first preset time period includes the current moment and a preset time period before the current moment.

[0102] In this embodiment, after the real-time trend option is triggered, the change trend of the process capability index value of the target vehicle model within the first preset time period can be statistically obtained according to the inspection time of the quality inspection vehicle.

[0103] As an example, Fig. 9 The curve change diagram in the sixth interface shown is the change trend of the process capability index value of the target vehicle model within the first preset time period; the sixth interface can also display the compliance rate and non-compliance rate of the quality inspection vehicles.

[0104] S503: In response to the historical trend option being triggered, displaying a seventh interface, wherein the seventh interface includes a filter option, and the filter option is used to receive the historical time period input by the user.

[0105] S504, in response to the filtering option being triggered, an eighth interface is displayed, wherein the eighth interface is used to display the change trend of the process capability index value of the target vehicle model within the historical time period.

[0106] As an example, Fig.10 The curve change diagram in the eighth interface shown is the change trend of the process capability index value of the target vehicle model in the historical time period; the eighth interface can also display the compliance rate and non-compliance rate of the quality inspection vehicles.

[0107] In an embodiment of the present application, the real-time trend option and the historical trend option of the process capability index value are displayed in the interface, which can more intuitively display the changes in the process capability index value and facilitate user viewing.

[0108] In a possible implementation, the above method may further include:

[0109] For newly produced models, vehicles produced within N months after the start of production are fully inspected. If all vehicles produced within N months are qualified and all CPKs calculated using the actual maximum steering angle of the vehicle within N months are greater than or equal to 1.33, the quality inspection ratio will be reduced from 100% to a first preset ratio, which may be 5% or 10%, etc.

[0110] According to the first preset ratio, random inspections are conducted on vehicles produced within N months. If unqualified vehicles are found among the randomly inspected vehicles, the quality inspection ratio is converted to full inspection.

[0111] If the steering angles of all vehicles that have been fully inspected for M consecutive months are qualified and all calculated CPKs are greater than or equal to 1.33, the quality inspection ratio is reduced from 100% to a first preset ratio.

[0112] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0113] Corresponding to the vehicle quality inspection method described in the above embodiment, Fig.11 A structural block diagram of a vehicle quality inspection device provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0114] Reference Fig.11 The device 600 may include: an information acquisition module 610, an index calculation module 620 and a quality inspection ratio determination module 630.

[0115] The information acquisition module 610 is used to acquire the actual maximum steering angles of multiple quality inspection vehicles of the target vehicle type and the steering angle specification information corresponding to the target vehicle type, wherein the steering angle specification information includes the steering angle upper limit value and the steering angle lower limit value;

[0116] An index calculation module 620, configured to calculate a process capability index value of the quality inspection vehicle based on a plurality of actual maximum steering angles of the quality inspection vehicle, the steering angle upper limit value, and the steering angle lower limit value;

[0117] The quality inspection ratio determination module 630 is used to determine the quality inspection ratio of the target vehicle model to be shipped based on the process capability index value, wherein the quality inspection ratio is used to perform quality inspection on the target vehicle model to be shipped.

[0118] In a possible implementation, the quality inspection ratio determination module 630 may be specifically used to:

[0119] Obtaining a first steering angle qualification rate of a plurality of the inspection vehicles, wherein the first steering angle qualification rate is determined based on an actual maximum steering angle of each of the inspection vehicles;

[0120] If the process capability index value is greater than or equal to a preset value, and the first steering angle pass rate is greater than or equal to a first preset probability, determining the first preset ratio as the quality inspection ratio of the target vehicle model to be shipped;

[0121] If the process capability index value is less than the preset value, and / or the first steering angle pass rate is less than the first preset probability, the second preset ratio is determined as the quality inspection ratio of the target vehicle model to be shipped, wherein the second preset ratio is greater than the first preset ratio.

[0122] In a possible implementation, the quality inspection ratio determination module 630 is also connected to:

[0123] A qualified rate acquisition module, used for acquiring a qualified rate of a second steering angle of a sampled vehicle, wherein the sampled vehicle is the vehicle to be shipped sampled based on the first preset ratio;

[0124] A ratio updating module is used to update the quality inspection ratio of the vehicle to be shipped from the first preset ratio to the second preset ratio if the second steering angle qualified rate is less than the second preset probability.

[0125] In a possible implementation, the actual maximum steering angle of the inspection vehicle includes the maximum inner steering angle and the maximum outer steering angle of the target front wheel, the steering angle upper limit includes the inner steering angle upper limit and the outer steering angle upper limit, and the steering angle lower limit includes the inner steering angle lower limit and the outer steering angle lower limit;

[0126] The index calculation module 620 may be specifically used for:

[0127] Calculating a process capability index value of the steering inner angle of the quality inspection vehicle based on the maximum steering inner angle, the steering inner angle upper limit value, and the steering inner angle lower limit value;

[0128] Based on the maximum steering outer angle, the steering outer angle upper limit value and the steering outer angle lower limit value, the process capability index value of the steering outer angle of the quality inspection vehicle is calculated, wherein the process capability index value of the quality inspection vehicle includes the process capability index value of the steering inner angle and the process capability index value of the steering outer angle.

[0129] In a possible implementation, the information acquisition module 610 may be specifically used to:

[0130] Acquiring actual maximum steering angles of a plurality of tested vehicles and an identification code of each of the tested vehicles;

[0131] Matching the model of the tested vehicle based on the identification code to obtain the model of each of the tested vehicles;

[0132] A plurality of quality inspection vehicles of the target vehicle type and an actual maximum steering angle of each of the quality inspection vehicles are extracted from the vehicle types of the tested vehicles.

[0133] In a possible implementation, the information acquisition module 610 may be specifically used to:

[0134] Displaying a first interface, wherein the first interface includes a steering angle model option;

[0135] In response to the steering angle model option being triggered, displaying a second interface, the second interface including parameter configuration options;

[0136] In response to the parameter configuration option being triggered, displaying a third interface, the third interface including a target vehicle model label and a steering angle editing option;

[0137] In response to the steering angle editing option being triggered, a fourth interface is displayed, the fourth interface including a steering angle upper limit value setting option and a steering angle lower limit value setting option, the steering angle upper limit value setting option is used to receive the steering angle upper limit value input by the user, and the steering angle lower limit value setting option is used to receive the steering angle lower limit value input by the user;

[0138] The steering angle upper limit value input by the steering angle upper limit value setting option and the steering angle lower limit value input by the steering angle lower limit value setting option are obtained to obtain the steering angle specification information corresponding to the target vehicle model.

[0139] In a possible implementation, the second interface further includes a model trend option, and the second interface can be used to:

[0140] In response to the model trend option being triggered, displaying a fifth interface, the fifth interface including a real-time trend option and a historical trend option;

[0141] In response to the real-time trend option being triggered, a sixth interface is displayed, wherein the sixth interface is used to display the change trend of the process capability index value of the target vehicle model within a first preset time period, wherein the first preset time period includes the current moment and a preset time period before the current moment;

[0142] In response to the historical trend option being triggered, displaying a seventh interface, the seventh interface including a filter option, the filter option being used to receive the historical time period input by the user;

[0143] In response to the filtering option being triggered, an eighth interface is displayed, and the eighth interface is used to show the change trend of the process capability index value of the target vehicle model within the historical time period.

[0144] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0145] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0146] The present application also provides a terminal device, see Fig.12 The terminal device 400 may include: at least one processor 410, a memory 420, and a computer program stored in the memory 420 and executable on the at least one processor 410. When the processor 410 executes the computer program, the steps in any of the above-mentioned method embodiments are implemented, for example Figure 1 Steps S101 to S103 in the illustrated embodiment. Alternatively, when the processor 410 executes the computer program, the functions of each module / unit in the above-mentioned device embodiments are implemented, for example Fig.11 The functions of the information acquisition module 610 to the quality inspection ratio determination module 630 are shown.

[0147] Exemplarily, the computer program may be divided into one or more modules / units, one or more modules / units are stored in the memory 420, and executed by the processor 410 to complete the present application. The one or more modules / units may be a series of computer program segments capable of completing specific functions, and the program segments are used to describe the execution process of the computer program in the terminal device 400.

[0148] Those skilled in the art will understand that Fig.12 It is only an example of a terminal device and does not constitute a limitation on the terminal device. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components, such as input and output devices, network access devices, buses, etc.

[0149] The processor 410 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0150] The memory 420 may be an internal storage unit of the terminal device, or an external storage device of the terminal device, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. The memory 420 is used to store the computer program and other programs and data required by the terminal device. The memory 420 may also be used to temporarily store data that has been output or is to be output.

[0151] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of the present application is not limited to only one bus or one type of bus.

[0152] The vehicle quality inspection method provided in the embodiment of the present application can be applied to terminal devices such as computers, tablet computers, laptop computers, netbooks, personal digital assistants (PDAs), etc. The embodiment of the present application does not impose any restrictions on the specific type of terminal devices.

[0153] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0154] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0155] In the embodiments provided in the present application, it should be understood that the disclosed terminal equipment, devices and methods can be implemented in other ways. For example, the terminal equipment embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as 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 mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0156] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0157] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0158] 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. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by one or more processors, the steps of each of the above-mentioned method embodiments can be implemented.

[0159] 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. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by one or more processors, the steps of each of the above-mentioned method embodiments can be implemented.

[0160] Similarly, as a computer program product, when the computer program product runs on a terminal device, the terminal device can implement the steps in the above-mentioned method embodiments when executing the computer program product.

[0161] The computer program includes computer program code, which may be in source code form, object code form, executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer readable medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer readable media do not include electric carrier signals and telecommunication signals.

[0162] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A vehicle quality inspection method, characterized in that: include: Acquire the actual maximum steering angles of multiple quality inspection vehicles of the target vehicle type and the steering angle specification information corresponding to the target vehicle type, wherein the steering angle specification information includes an upper limit value of the steering angle and a lower limit value of the steering angle; Calculating a process capability index value of the quality inspection vehicle based on a plurality of actual maximum steering angles of the quality inspection vehicle, the steering angle upper limit value, and the steering angle lower limit value; Based on the process capability index value, a quality inspection ratio of the target vehicle model to be shipped is determined, wherein the quality inspection ratio is used to perform quality inspection on the maximum steering angle of the target vehicle model to be shipped.

2. The vehicle quality inspection method according to claim 1, characterized in that: The determining, based on the process capability index value, the quality inspection ratio of the target vehicle model to be shipped includes: Obtaining a first steering angle qualification rate of a plurality of the inspection vehicles, wherein the first steering angle qualification rate is determined based on an actual maximum steering angle of each of the inspection vehicles; If the process capability index value is greater than or equal to a preset value, and the first steering angle pass rate is greater than or equal to a first preset probability, determining the first preset ratio as the quality inspection ratio of the target vehicle model to be shipped; If the process capability index value is less than the preset value, and / or the first steering angle pass rate is less than the first preset probability, the second preset ratio is determined as the quality inspection ratio of the target vehicle model to be shipped, wherein the second preset ratio is greater than the first preset ratio.

3. The vehicle quality inspection method according to claim 2, characterized in that: After determining the first preset ratio as the quality inspection ratio of the target vehicle model to be shipped, the method further includes: Obtaining a second steering angle qualification rate of the sampled vehicles, wherein the sampled vehicles are the vehicles to be shipped sampled based on the first preset ratio; If the second steering angle qualification rate is less than the second preset probability, the quality inspection ratio of the vehicles to be shipped out of the factory is updated from the first preset ratio to the second preset ratio.

4. The vehicle quality inspection method according to claim 1, characterized in that: The actual maximum steering angle of the inspection vehicle includes the maximum inner steering angle and the maximum outer steering angle of the target front wheel, the steering angle upper limit includes the inner steering angle upper limit and the outer steering angle upper limit, and the steering angle lower limit includes the inner steering angle lower limit and the outer steering angle lower limit; The calculating the process capability index value of the quality inspection vehicle based on the actual maximum steering angle of the quality inspection vehicle, the steering angle upper limit value and the steering angle lower limit value comprises: Calculating a process capability index value of the steering inner angle of the quality inspection vehicle based on the maximum steering inner angle, the steering inner angle upper limit value, and the steering inner angle lower limit value; Based on the maximum steering outer angle, the steering outer angle upper limit value and the steering outer angle lower limit value, the process capability index value of the steering outer angle of the quality inspection vehicle is calculated, wherein the process capability index value of the quality inspection vehicle includes the process capability index value of the steering inner angle and the process capability index value of the steering outer angle.

5. The vehicle quality inspection method according to any one of claims 1 to 4, characterized in that: Obtain the actual maximum steering angles of multiple quality inspection vehicles of the target model, including: Acquiring actual maximum steering angles of a plurality of tested vehicles and an identification code of each of the tested vehicles; Matching the model of the tested vehicle based on the identification code to obtain the model of each of the tested vehicles; A plurality of quality inspection vehicles of the target vehicle type and an actual maximum steering angle of each of the quality inspection vehicles are extracted from the vehicle types of the tested vehicles.

6. The vehicle quality inspection method according to any one of claims 1 to 4, characterized in that: Get the steering angle specification information corresponding to the target vehicle model, including: Displaying a first interface, wherein the first interface includes a steering angle model option; In response to the steering angle model option being triggered, displaying a second interface, the second interface including parameter configuration options; In response to the parameter configuration option being triggered, displaying a third interface, the third interface including a target vehicle model label and a steering angle editing option; In response to the steering angle editing option being triggered, a fourth interface is displayed, the fourth interface including a steering angle upper limit value setting option and a steering angle lower limit value setting option, the steering angle upper limit value setting option is used to receive the steering angle upper limit value input by the user, and the steering angle lower limit value setting option is used to receive the steering angle lower limit value input by the user; The steering angle upper limit value input by the steering angle upper limit value setting option and the steering angle lower limit value input by the steering angle lower limit value setting option are obtained to obtain the steering angle specification information corresponding to the target vehicle model.

7. The vehicle quality inspection method according to claim 6, characterized in that: The second interface further includes a model trend option, and the method further includes: In response to the model trend option being triggered, displaying a fifth interface, the fifth interface including a real-time trend option and a historical trend option; In response to the real-time trend option being triggered, a sixth interface is displayed, wherein the sixth interface is used to display the change trend of the process capability index value of the target vehicle model within a first preset time period, wherein the first preset time period includes the current moment and a preset time period before the current moment; In response to the historical trend option being triggered, displaying a seventh interface, the seventh interface including a filter option, the filter option being used to receive the historical time period input by the user; In response to the filtering option being triggered, an eighth interface is displayed, and the eighth interface is used to show the change trend of the process capability index value of the target vehicle model within the historical time period.

8. A vehicle quality inspection device, characterized in that: include: An information acquisition module, used to acquire actual maximum steering angles of multiple quality inspection vehicles of a target vehicle type and steering angle specification information corresponding to the target vehicle type, wherein the steering angle specification information includes a steering angle upper limit value and a steering angle lower limit value; An index calculation module, used to calculate the process capability index value of the quality inspection vehicle based on a plurality of actual maximum steering angles of the quality inspection vehicle, the steering angle upper limit value, and the steering angle lower limit value; The quality inspection ratio determination module is used to determine the quality inspection ratio of the vehicles of the target model to be shipped based on the process capability index value, wherein the quality inspection ratio is used to perform quality inspection on the vehicles of the target model to be shipped.

9. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the vehicle quality inspection method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the vehicle quality inspection method according to any one of claims 1 to 7 is implemented.

Images