Method and device for testing three-electric system of new energy automobile

Abstract

The invention provides a new energy automobile three-electricity system test method and device, and the method comprises the steps: collecting a test image of a three-electricity system, recognizing test data according to the test image, and obtaining a test result according to the test data; on the other hand, a virtual reality test scene is reconstructed according to the test image, tactile feedback information is obtained according to the test data and the virtual reality interaction action information, and a tactile feedback unit in the virtual reality glove is driven to act according to the tactile feedback information, so that tactile feedback is achieved. According to the new energy automobile three-electricity system test method and device, the test image and the test data are obtained together by using a machine vision identification technology, and the virtual reality test scene is constructed according to the test image and the test data while the test result is obtained according to the test data; and the characteristics of the test data are displayed in a tactile feedback form, so that the perception of a tester on a test result is enhanced, the test interestingness is improved, and the comprehensive test efficiency can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle testing, and in particular to a method and device for testing a three-electric system of a new energy vehicle. Background Art

[0002] New energy vehicles refer to vehicles that use new power systems as their main power source, or that combine new power systems with traditional power systems. They mainly include pure electric vehicles, hybrid vehicles, fuel cell vehicles, etc. Their new power systems are mainly three-electric systems, including batteries, motors, and electronic controls. These three systems are the core part of the new energy vehicle power system, and are responsible for vehicle control, energy storage and management, and drive control functions, which directly affect the product's power, economy, drivability, and safety performance.

[0003] In order to ensure the normal operation and optimized control of the three-electric system and safeguard the product strength of new energy vehicles, it is necessary to measure, analyze and evaluate the various parameters and states of the three-electric system.

[0004] In the prior art, the test of the three-electric system of new energy vehicles generally collects various parameters and status data of the three-electric system in real time through relevant test equipment, including voltage, current, temperature, power, efficiency, insulation performance, internal resistance, aging, mechanical consumption, etc. The various parameters and status data obtained are entered into the computer for management and analysis to obtain the test results. The test results are displayed in the form of images, charts, graphics and texts, etc. However, the effect of such display is limited. Testers lack intuitive perception of the various parameters and states of the three-electric system. The data analysis process is lengthy and tedious, and the data analysis efficiency is low. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a new energy vehicle three-electric system testing method and device to solve the problems of lengthy and tedious data analysis process and low data analysis efficiency in the three-electric system testing of the prior art.

[0006] On one hand, the present invention provides a method for testing the three-electric system of a new energy vehicle, comprising: Put the three-electric system into test state according to the preset test conditions; Collecting a test image of the three-electric system in a test state, and identifying test data according to the test image to obtain a test result according to the test data; and, obtaining virtual reality scene information according to the test image, so as to reconstruct a virtual reality test scene according to the virtual reality scene information; The tactile feedback information is obtained according to the test data and the virtual reality interaction action information, and the tactile feedback unit in the virtual reality glove is driven to move according to the tactile feedback information to achieve tactile feedback.

[0007] Optionally, it also includes: Constructing a hardware model of the three-electric system according to the hardware configuration of the three-electric system, and collecting relative position information between the virtual reality glove and the hardware model; The step of reconstructing a virtual reality test scene according to the virtual reality scene information further includes: The virtual reality test scene is obtained according to the virtual reality scene information and combined with the relative position information, so as to enhance the feedback simulation effect through the interactive feedback between the virtual reality glove and the hardware model.

[0008] Optionally, the method further includes: obtaining a target acquisition surface according to the current test item, and obtaining a corresponding target acquisition image according to the target acquisition surface, wherein: The step of obtaining virtual reality scene information according to the test image comprises: obtaining virtual reality scene information according to at least one group of the test images, and performing image enhancement on the target acquisition image to enhance the virtual scene image quality of the target acquisition surface, wherein a group of the test images includes at least one frame of acquisition image of each acquisition surface; The step of identifying test data according to the test image includes: parsing the target acquisition image to obtain test data corresponding to the current test item.

[0009] Optionally, the method further includes: obtaining a next test item, and obtaining a next target acquisition surface according to the next test item, wherein: The step of obtaining virtual reality scene information according to the test image also includes: Analyze the next target acquisition image corresponding to the next target acquisition surface, and obtain the feature area and non-feature area in the next target acquisition image in combination with the project features of the next test item, and preload the image information corresponding to the non-feature area in the next target acquisition image into the virtual reality scene information; According to the test item switching instruction, when switching to the next test item, the image information corresponding to the feature area in the next target acquisition image is loaded into the virtual reality scene information in real time.

[0010] Optionally, the characteristic area includes a dynamic area, and the graphic information corresponding to the dynamic area includes a voltage collector display value, a current collector display value, a temperature collector display value, and a status indicator light state.

[0011] Optionally, when the corresponding item feature is a physical surface feature, the feature area includes the entire surface area of ​​the test object.

[0012] Optionally, the step of obtaining virtual reality scene information according to the test image further includes: Before the image information corresponding to the feature area in the next target acquisition image is loaded into the virtual reality scene information in real time, the image information corresponding to the feature area in the next target acquisition image is enhanced to enhance the quality of the virtual reality image corresponding to the feature area.

[0013] Optionally, the tactile feedback information includes fluctuation information of voltage, current and temperature.

[0014] Another aspect of the present invention provides a new energy vehicle three-electric system testing device, which includes: A test environment simulation module is used to put the three-electric system into a test state according to preset test conditions; An acquisition module, used for acquiring a test image of the three-electric system in a test state, and identifying test data according to the test image; A virtual reality module, used to obtain virtual reality scene information according to the test image, so as to reconstruct a virtual reality test scene according to the virtual reality scene information; The virtual reality module is also used to obtain tactile feedback information according to the test data and the virtual reality interactive action information, and drive the tactile feedback unit in the virtual reality glove to move according to the tactile feedback information to achieve tactile feedback.

[0015] Optionally, an interactive enhancement platform is further included, wherein a hardware model consistent with the hardware configuration of the three-electric system to be tested is provided in the interactive enhancement platform, wherein: The virtual reality module is also used to collect relative position information between the virtual reality glove and the hardware model, and obtain the virtual reality test scene according to the virtual reality scene information and the relative position information, so as to enhance the simulation effect through the interaction between the virtual reality glove and the hardware model.

[0016] The new energy vehicle three-electric system testing method provided by the present invention is based on machine vision technology, collects test images of the three-electric system in a test state, and recognizes test data based on the test images to obtain test results based on the test data; at the same time, a virtual reality test scene is obtained based on the test images, tactile feedback information is obtained based on the test data and virtual reality interactive action information, and a tactile feedback unit in a virtual reality glove is driven to act based on the tactile feedback information to achieve tactile feedback. The new energy vehicle three-electric system testing method of the present invention utilizes machine vision technology to test the three-electric system, and also utilizes the obtained test images and test data to construct a virtual reality test scene, as well as virtual reality tactile feedback, which can simultaneously realize the test personnel's immersive experience of the three-electric system testing, improve the perception of the test information such as the data and status of the three-electric system, effectively enhance the test interest, and improve the efficiency of data analysis; and the tactile feedback can further enhance the understanding of the test information, enhance the test personnel's analysis and decision-making ability of the data, and provide convenience for the in-depth realization of the test result decision; at the same time, data collection is realized through machine vision, which can reduce the workload of manual data recording, improve the degree of automation, and avoid the directly connected collection equipment from introducing too many interference signals, thereby improving the reliability of the collected data and the reliability of the obtained test data.

[0017] The new energy vehicle three-electric system test device provided by the present invention reuses the test images of the three-electric system for test data recognition and construction of virtual reality test scenes. While realizing isolated and automated three-electric system test data acquisition, the test data can also be intuitively fed back to testers through virtual reality technology, which can effectively improve the testers' depth of understanding of the test data, provide convenience for testers to make in-depth evaluation decisions, and effectively improve the test efficiency of the new energy vehicle three-electric system test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main process of the three-electric system testing method of new energy vehicles in the present invention; Figure 2 This is a schematic diagram of the main module structure of the three-electric system testing device for new energy vehicles in the present invention.

[0019] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0023] In order to solve the problems of tedious data analysis process and low data analysis efficiency in the prior art three-electric system test, the present invention provides a new energy vehicle three-electric system test method, which includes: Step S01: putting the three-electric system into a test state according to preset test conditions; Step S02: collecting a test image of the three-electric system in a test state, and identifying test data according to the test image to obtain a test result according to the test data; Step S03: obtaining virtual reality scene information according to the test image, so as to reconstruct a virtual reality test scene according to the virtual reality scene information; Step S04: obtaining tactile feedback information according to the test data and the virtual reality interaction action information, and driving the tactile feedback unit in the virtual reality glove to act according to the tactile feedback information to achieve tactile feedback.

[0024] In step S01, the test conditions include load conditions such as no-load, light load, and heavy load, and temperature conditions such as low temperature, normal temperature, and high temperature, to simulate the actual working state of the three-electric system to detect whether the three-electric system can operate normally under the test state, and whether the operating efficiency is qualified.

[0025] In step S02, voltage sensors, current sensors, temperature sensors, power calculation units, efficiency calculation units, etc. can be configured and set at corresponding positions of the battery, motor and electronic control of the three-electric system to collect electrical status information of the three-electric system, including directly obtained voltage, current, temperature and other information, as well as power, efficiency and other information calculated based on voltage, current, temperature and other data. The collected data is displayed graphically through digital tubes, liquid crystal displays, etc., so that each collected data can be obtained based on the test image and machine vision technology.

[0026] Based on different test response requirements, status indicator lights can also be configured to show whether the working status of the corresponding equipment is abnormal or normal. In the virtual reality test scenario, for some status indicator lights that are not easy to observe in a certain position, the operational flexibility of virtual reality can be used to highlight them and improve their indication effect. In addition, a variety of different data that need to be observed from multiple angles in reality can be displayed at the same time, thereby improving the perception of the correlation between the data and thus improving the test efficiency.

[0027] The implementation of machine vision technology requires the configuration of cameras, image processing chips, image recognition chips, etc. The camera collects test images, and the image processing chip performs pre-processing such as denoising and enhancement on the test images. The image recognition chip then identifies the information contained in the image, including display data information of voltage, current, temperature, power, and efficiency, abnormal status information such as the fault status corresponding to the fault indicator light, and physical status information such as battery aging texture, motor mechanical damage, and electronic control assembly positioning accuracy.

[0028] The test data includes the above-mentioned display data information and physical status information. The test data can also be provided to the remote service platform for analysis and compared with standard data to obtain test results. The test results can be displayed in a variety of ways such as charts, reports, indicators, etc. The display method can also be flexibly selected according to user needs.

[0029] In step S03, a virtual reality test scene is mainly reconstructed based on the test image. At the same time, the test results can be displayed in the virtual reality test scene through charts, reports, indicators, etc., and the display block diagram is associated with the data source device. For example, the test result block diagram of the historical data trend of the battery's voltage, current, and power data is connected to the battery through an association line, and the test result block diagram of the historical data trend of the electric control system's voltage, current, and power data is connected to the electric control system through an association line. The device referred to by the test result can be displayed intuitively and accurately, and the association errors in data analysis can be reduced, thereby improving the test efficiency.

[0030] In step S04, tactile feedback can be provided in the form of fluid flow sensing feedback, pressure sensing feedback, and the like. For example, for historical trend data of voltage and current data, fluid flow sensing feedback can be provided. Different flow sizes can be fed back for different voltages and currents, so as to intuitively perceive the electric driving effects of voltage and current, as well as the impact of electromagnetic interference on electric driving.

[0031] Different data can be experienced at the same time. For example, voltage and current are fed back to the left and right hands respectively, so as to better perceive the relationship between voltage and current. At the same time, voice recognition technology can be used to control the display and testing of data, which can free both hands and facilitate better perception of multiple data at the same time.

[0032] In order to improve the quality of the virtual reality test scene, in this embodiment, it also includes: building a hardware model of the three-electric system according to the hardware configuration of the three-electric system, and collecting relative position information between the virtual reality glove and the hardware model.

[0033] Wherein, step S03 also includes: obtaining the virtual reality test scene according to the virtual reality scene information and in combination with the relative position information, so as to enhance the feedback simulation effect through the interactive feedback between the virtual reality gloves and the hardware model. Through the configuration of the hardware model, the problem of limited force limitation of the virtual reality gloves can be supplemented and the feedback effect can be improved.

[0034] In order to reduce the requirements of virtual reality reconstruction on computing resources and improve reconstruction efficiency, in this embodiment, it also includes: obtaining a target acquisition surface according to the current test item, and obtaining a corresponding target acquisition image according to the target acquisition surface.

[0035] Among them, the step of obtaining virtual reality scene information based on the test image includes: obtaining virtual reality scene information based on at least one group of the test images, and performing image enhancement on the target acquisition image to enhance the virtual scene image quality of the target acquisition surface, wherein a group of the test images includes at least one frame of acquisition image for each acquisition surface.

[0036] The step of identifying test data according to the test image includes: parsing the target acquisition image to obtain test data corresponding to the current test item.

[0037] By performing image enhancement on the current test project, more computing power can be allocated to current needs, ensuring the virtual reality experience effect of the current test project. As the test project is transferred, the computing power allocation is transferred synchronously. Overall, when all test projects are completed, the real-time experience continues to be at a high level, thereby ensuring the overall test experience effect.

[0038] One acquisition surface corresponds to one camera position. To ensure the comprehensiveness of the acquisition, multiple groups of machine vision modules can be set up. A group of cameras, image processing chips, and image recognition chips can be configured for each acquisition surface. Different hardware configurations can be selected for different acquisition requirements, or robotic arms, slide rails, etc. can be set up, and a small number of machine vision modules can be configured. The machine vision modules can be moved to the corresponding points through the robotic arms according to the requirements of the test items to collect test images for the corresponding test items.

[0039] In order to improve the experience effect in switching test items, in this embodiment, it also includes: obtaining the next test item, and obtaining the next target acquisition surface according to the next test item, wherein: The step of obtaining virtual reality scene information according to the test image also includes: Analyze the next target acquisition image corresponding to the next target acquisition surface, and obtain the feature area and non-feature area in the next target acquisition image in combination with the project features of the next test item, and preload the image information corresponding to the non-feature area in the next target acquisition image into the virtual reality scene information; According to the test item switching instruction, when switching to the next test item, the image information corresponding to the feature area in the next target acquisition image is loaded into the virtual reality scene information in real time.

[0040] Among them, the test item switching instruction can be a preset automatic switching instruction, or it can be obtained according to the voice switching instruction processing of the tester based on the voice recognition technology. Under automatic switching control, the test is automatically performed in a preset order. At this time, if a voice switching instruction is received, the test item corresponding to the voice switching instruction is preferably selected for testing, and the preset test sequence is re-arranged, so that after the test item corresponding to the voice switching instruction is completed, the test of the remaining test items can be automatically completed.

[0041] According to the acquisition method of the collected data, in some test items, the characteristic area includes a dynamic area, and the graphic information corresponding to the dynamic area includes the voltage collector display value, the current collector display value, the temperature collector display value, and the status of the status indicator light. For the acquisition of the dynamic area, it can be confirmed in advance whether there is a dynamic area based on the collection information corresponding to the test item. After confirmation, the corresponding image recognition strategy is called to ensure the recognition accuracy of the corresponding graphic information.

[0042] In other test items, the corresponding item features are physical surface features, and the feature area includes the entire surface area of ​​the test object, such as surface cracks of the motor, surface texture of the battery, degree of fit of the connection area, etc., corresponding to image recognition strategies that may be different from dynamic areas.

[0043] Among them, the image recognition strategy includes image processing algorithms and image recognition models. The image processing algorithms may include grayscale, binarization, color segmentation, region extraction, edge detection, contour extraction, etc.; the image recognition models may include digital recognition, temperature recognition, fault recognition, etc. According to the different detection objects, different image recognition strategies are adaptively selected to ensure recognition accuracy, while reducing the waste of computing resources and improving efficiency.

[0044] In order to reduce the computing power burden of reconstructing the virtual reality test scene, in this embodiment, the step of obtaining virtual reality scene information based on the test image also includes: before loading the image information corresponding to the feature area in the next target acquisition image into the virtual reality scene information in real time, the image information corresponding to the feature area in the next target acquisition image is enhanced to enhance the virtual reality image quality corresponding to the feature area, thereby improving the smoothness of scene switching corresponding to the test item switching and improving the virtual reality experience effect.

[0045] Tactile feedback information generally includes voltage, current, temperature fluctuation information, as well as cracks and ripples on the mechanical surface.

[0046] The present invention also provides a new energy vehicle three-electric system testing device, which is mainly used to implement the above-mentioned new energy vehicle three-electric system testing method, such as Figure 2 As shown, it mainly includes: The test environment simulation module 10 is used to put the three-electric system 01 into a test state according to preset test conditions; The acquisition module 20 is used to acquire a test image of the three-electric system 01 in a test state, and identify test data according to the test image; A virtual reality module 30, configured to obtain virtual reality scene information according to the test image, so as to reconstruct a virtual reality test scene according to the virtual reality scene information; The virtual reality module 30 is further used to obtain tactile feedback information according to the test data and the virtual reality interactive action information, and drive the tactile feedback unit in the virtual reality glove to move according to the tactile feedback information to achieve tactile feedback.

[0047] The acquisition module 20 is also connected to the remote service platform to transmit the test data to the remote service platform, and the test data is analyzed and managed by the remote service platform to obtain the test results.

[0048] To enhance the interaction effect, in this embodiment, it also includes an interaction enhancement platform, in which a hardware model consistent with the hardware configuration of the three-electric system to be tested is provided, wherein the virtual reality module is also used to collect the relative position information between the virtual reality glove and the hardware model, and obtain the virtual reality test scene according to the virtual reality scene information and the relative position information, so as to enhance the simulation effect through the interaction between the virtual reality glove and the hardware model.

[0049] The new energy vehicle three-electric system testing method and device provided by the present invention reuse the test images of the three-electric system for test data recognition and construction of virtual reality test scenes. While realizing isolated and automated three-electric system test data acquisition, the test personnel can have an immersive experience in the three-electric system test, improve their perception of test information such as data and status of the three-electric system, effectively enhance the fun of the test, and improve the efficiency of data analysis. Tactile feedback can further enhance the understanding of the test information, enhance the test personnel's ability to analyze and make decisions on the data, and provide convenience for the in-depth realization of test result decisions. At the same time, data collection is achieved through machine vision, which can reduce the workload of manual data recording, improve the degree of automation, and avoid the introduction of too many interference signals by directly connected collection equipment, thereby improving the reliability of the collected data and the reliability of the obtained test data.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0051] The above-mentioned embodiments only express several specific implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A new energy vehicle three-electric system testing method, characterized in that: include: Put the three-electric system into test state according to the preset test conditions; Collecting a test image of the three-electric system in a test state, and identifying test data according to the test image to obtain a test result according to the test data; and, obtaining virtual reality scene information according to the test image, so as to reconstruct a virtual reality test scene according to the virtual reality scene information; Tactile feedback information is obtained according to the test data and the virtual reality interaction action information, and a tactile feedback unit in the virtual reality glove is driven to act according to the tactile feedback information to achieve tactile feedback.

2. The new energy vehicle three-electric system testing method according to claim 1 is characterized in that: Also includes: Constructing a hardware model of the three-electric system according to the hardware configuration of the three-electric system, and collecting relative position information between the virtual reality glove and the hardware model; The step of reconstructing a virtual reality test scene according to the virtual reality scene information further includes: The virtual reality test scene is obtained according to the virtual reality scene information and combined with the relative position information, so as to enhance the feedback simulation effect through the interactive feedback between the virtual reality glove and the hardware model.

3. The new energy vehicle three-electric system testing method according to claim 1 is characterized in that: Also includes: A target acquisition surface is obtained according to the current test item, and a corresponding target acquisition image is obtained according to the target acquisition surface, wherein: The step of obtaining virtual reality scene information according to the test image comprises: obtaining virtual reality scene information according to at least one group of the test images, and performing image enhancement on the target acquisition image to enhance the virtual scene image quality of the target acquisition surface, wherein a group of the test images includes at least one frame of acquisition image of each acquisition surface; The step of identifying test data according to the test image includes: parsing the target acquisition image to obtain test data corresponding to the current test item.

4. The new energy vehicle three-electric system testing method according to claim 3 is characterized in that: Also includes: Get the next test item, and get the next target acquisition surface according to the next test item, where: The step of obtaining virtual reality scene information according to the test image also includes: Analyze the next target acquisition image corresponding to the next target acquisition surface, and obtain the feature area and non-feature area in the next target acquisition image in combination with the project features of the next test item, and preload the image information corresponding to the non-feature area in the next target acquisition image into the virtual reality scene information; According to the test item switching instruction, when switching to the next test item, the image information corresponding to the feature area in the next target acquisition image is loaded into the virtual reality scene information in real time.

5. The new energy vehicle three-electric system testing method according to claim 4 is characterized in that: The characteristic area includes a dynamic area, and the graphic information corresponding to the dynamic area includes a voltage collector display value, a current collector display value, a temperature collector display value, and a status indicator light state.

6. The new energy vehicle three-electric system testing method according to claim 4 is characterized in that: When the corresponding item feature is a physical surface feature, the feature area includes the entire surface area of ​​the test object.

7. The new energy vehicle three-electric system testing method according to claim 4 is characterized in that: The step of obtaining virtual reality scene information according to the test image also includes: Before the image information corresponding to the feature area in the next target acquisition image is loaded into the virtual reality scene information in real time, the image information corresponding to the feature area in the next target acquisition image is enhanced to enhance the quality of the virtual reality image corresponding to the feature area.

8. The new energy vehicle three-electric system testing method according to claim 1 is characterized in that: The tactile feedback information includes fluctuation information of voltage, current and temperature.

9. A new energy vehicle three-electric system test device, characterized in that: include: A test environment simulation module is used to put the three-electric system into a test state according to preset test conditions; An acquisition module, used for acquiring a test image of the three-electric system in a test state, and identifying test data according to the test image; A virtual reality module, used to obtain virtual reality scene information according to the test image, so as to reconstruct a virtual reality test scene according to the virtual reality scene information; The virtual reality module is also used to obtain tactile feedback information according to the test data and the virtual reality interactive action information, and drive the tactile feedback unit in the virtual reality glove to move according to the tactile feedback information to achieve tactile feedback.

10. The new energy vehicle three-electric system test device according to claim 9, characterized in that: It also includes an interactive enhancement platform, in which a hardware model consistent with the hardware configuration of the three-electric system to be tested is set. The virtual reality module is also used to collect relative position information between the virtual reality glove and the hardware model, and obtain the virtual reality test scene according to the virtual reality scene information and the relative position information, so as to enhance the simulation effect through the interaction between the virtual reality glove and the hardware model.

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