Vehicle testing method and device, terminal equipment and computer readable storage medium
By using a climate simulation system in the laboratory to precisely control temperature and wind speed, the seasonality and safety issues of whole vehicle ice and snow melting performance testing were solved, and an efficient and controllable testing solution was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA FAW CO LTD
- Filing Date
- 2025-11-30
- Publication Date
- 2026-04-14
AI Technical Summary
The testing of vehicle ice and snow melting performance is constrained by natural climate and testing conditions, resulting in low testing accuracy and efficiency, and posing safety hazards.
Extreme ice and snow conditions are reproduced in a controlled laboratory environment using a climate simulation system. By precisely controlling temperature, wind speed, and snowfall parameters, standardized ice and snow melting performance tests are achieved.
It eliminates dependence on natural climate, improves the reproducibility and comparability of test results, reduces safety risks, and enhances R&D efficiency and testing flexibility.
Smart Images
Figure CN121855892A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive technology, and in particular to a vehicle testing method, apparatus, terminal equipment, and computer-readable storage medium. Background Technology
[0002] The vehicle's ice and snow melting performance test mainly relies on natural climate road test. Natural climate road test has inherent uncontrollability and limitations. Its reliance on actual snowfall weather leads to a long test cycle and seasonal limitations. Random fluctuations in key parameters such as snowfall, ambient temperature and wind speed cause the test data dispersion to be as high as ±30%.
[0003] Meanwhile, the snow melting rate is significantly affected by the differences in road conditions, slopes, and lighting conditions at different test sites. In addition, the initial temperature of the vehicle and the cleanliness of the glass are difficult to standardize, resulting in poor reproducibility and comparability of test results. Furthermore, there is a safety hazard of easy loss of control on icy and snowy roads, making it difficult to conduct extreme tests such as those in extremely cold conditions of -30℃. These problems seriously restrict the accuracy of testing and the efficiency of research and development. Summary of the Invention
[0004] In view of this, embodiments of this application provide a vehicle testing method, apparatus, terminal equipment, and computer-readable storage medium, which can effectively solve the problem that the vehicle's ice and snow melting performance testing is constrained by natural climate and testing conditions, thus affecting the testing accuracy and efficiency.
[0005] In a first aspect, embodiments of this application provide a vehicle testing method.
[0006] In some embodiments, a vehicle testing method is applied to a vehicle testing platform, the vehicle testing platform including a climate simulation system, the method comprising: Obtain the climate simulation parameters and simulation stop parameters corresponding to the test project. The climate simulation parameters are used to generate the target climate conditions of the climate simulation system. The adjusted climate simulation system is used to simulate the climate of the test vehicle that meets the preset environmental threshold until the test vehicle reaches the simulation stop parameter. Activate the vehicle's response function for the target climate conditions and conduct vehicle tests targeting this function.
[0007] Secondly, embodiments of this application provide a vehicle testing apparatus, comprising: The acquisition module is used to acquire the climate simulation parameters and simulation stop parameters corresponding to the test project. The climate simulation parameters are used to generate the target climate conditions of the climate simulation system. The simulation module is used to perform climate simulation on the test vehicle that meets the preset environmental threshold through the adjusted climate simulation system until the test vehicle reaches the simulation stop parameter; The testing module is used to enable the vehicle under test to respond to target climate conditions and to conduct vehicle tests on the response functions.
[0008] Thirdly, embodiments of this application provide a terminal device, including a processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program to implement the above-described vehicle testing method.
[0009] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program, which, when executed on a processor, implements the aforementioned vehicle testing method.
[0010] The embodiments of this application have the following beneficial effects: By conducting tests on a testing platform equipped with a climate simulation system, the reliance on real snowfall and extreme cold environments is eliminated, solving the problems of traditional snow and ice melting performance testing being constrained by seasonality and having long testing cycles (often spanning multiple years), thus significantly improving R&D efficiency and the flexibility of testing arrangements.
[0011] By precisely acquiring and setting climate simulation parameters (such as temperature, wind speed, and snowfall intensity) and simulation stopping parameters (such as settling time and snow and ice coverage), a high degree of precision control over the testing environment was achieved. This significantly improved the reproducibility of test results and the comparability between different vehicle models.
[0012] Conducting tests within a closed and controllable testing platform avoids the risk of loss of control caused by driving on icy and snowy roads, overcomes the technical bottleneck of making it difficult to safely conduct extreme tests under manual driving conditions, and provides a safe and efficient solution for verifying the functional reliability of vehicles in harsh environments.
[0013] In summary, this method not only solves the core pain points of traditional natural climate road testing, such as long cycles, lack of control, safety issues, and non-repeatability, but also achieves scientific, standardized, and efficient vehicle environmental adaptability testing by parameterizing climate conditions, standardizing processes, and refining control. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 A flowchart of a vehicle testing method according to an embodiment of this application is shown; Figure 2A schematic diagram of a vehicle testing device according to an embodiment of this application is shown; Figure 3 Another structural schematic diagram of the vehicle testing device according to an embodiment of this application is shown; Figure 4 The flowchart shown is illustrated in this embodiment of the application, which describes the climate simulation of a vehicle under test that meets a preset environmental threshold using an adjusted climate simulation system. Detailed Implementation
[0016] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0017] The components of the embodiments of this application described and illustrated in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0018] In the following text, the terms "comprising," "having," and their cognates, which may be used in various embodiments of this application, are intended only to indicate a particular feature, number, step, operation, element, component, or combination thereof, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, or adding the possibility of one or more combinations thereof. Furthermore, the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.
[0019] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of this application pertain. Terms (such as those defined in a generally used dictionary) shall be interpreted as having the same meaning as in the context of the relevant technical field and shall not be interpreted as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of this application.
[0020] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0021] The vehicle testing method will be explained below with reference to some specific examples.
[0022] Figure 1 A flowchart of a vehicle testing method according to an embodiment of this application is shown. Exemplarily, the vehicle testing method is applied to a vehicle testing platform, which includes a climate simulation system.
[0023] The vehicle testing platform refers to a comprehensive vehicle-level testing system that integrates climate environment simulation, vehicle condition preparation, functional response testing, and data acquisition capabilities. It is used to reproduce extreme ice and snow conditions in a controlled laboratory environment and to evaluate the performance of vehicle-related safety systems. This platform includes at least: a climate simulation system, a test preparation system, and a control system.
[0024] A climate simulation system is an integrated equipment system used to accurately generate and maintain specific meteorological conditions in the space surrounding a vehicle. It can independently or collaboratively control temperature, wind speed, humidity, and snowfall / precipitation parameters to reproduce extreme weather scenarios such as blizzards, severe cold, and strong winds in nature. Optionally, the climate simulation system includes an environmental wind tunnel system and a snow simulation system.
[0025] A test preparation system refers to a set of equipment and operating procedures used to ensure that a vehicle under test meets a standardized initial state before entering the climate simulation phase. The function of the test preparation system is to pre-process the vehicle and its microenvironment to bring it to a predetermined "preset environmental threshold". Optionally, the test preparation system may include an immersion environment chamber, an energy detection device, a structural condition inspection device, and a vehicle parking and positioning auxiliary device.
[0026] like Figure 1 As shown, the vehicle testing method, exemplarily, includes the following steps: S102, obtain the climate simulation parameters and simulation stop parameters corresponding to the test project. The climate simulation parameters are used to generate the target climate conditions of the climate simulation system.
[0027] The test items refer to standardized test tasks conducted on the functional performance of vehicles in specific icy and snowy environments, including but not limited to ice melting tests and snow melting tests. Understandably, each test item corresponds to a set of preset initial environmental conditions, climate simulation processes, static conditions, and functional response evaluation procedures.
[0028] Climate simulation parameters refer to a set of one or more set values or parameters used to control the operation of a climate simulation system in order to reproduce key meteorological factors in the target natural environment, including at least precipitation intensity, simulated snowfall, simulated snowfall air pressure, time, and simulated snowfall water temperature.
[0029] The simulation stop parameter refers to the trigger condition used to determine the end of a climate simulation phase. When the climate simulation system reaches this condition, the current simulation operation stops and the next testing phase begins. The condition can be a time threshold, physical state quantities reaching a predetermined level, or sensor feedback signals meeting preset logic, etc. Optionally, the outer surface of the windshield is completely covered by ice / snow.
[0030] A climate simulation system is a comprehensive equipment system integrated into a vehicle testing platform that can accurately generate and regulate local environmental climate conditions.
[0031] Target climate conditions refer to the controllable environmental state with clear physical indicators established and maintained within the climate simulation system according to the needs of the test project. It represents a certain type of extreme or typical snow and ice weather scenario that may occur in the real world.
[0032] Specifically, the test items include ice-melting performance tests and snow-melting performance tests. For example, before conducting a vehicle ice-melting performance test, the operator of the test platform selects "ice-melting test" as the current test item through the human-machine interface. In response to this selection, the control system automatically retrieves the parameter configuration package associated with the "ice-melting test" from its internal memory, which contains the following information: Climate simulation parameters: ambient temperature set at -5℃, initial wind speed at 60km / h, wind speed during the ice-making stage at 50km / h, snowfall at 0.57L / s, air pressure at 70Psig, water temperature at 3℃, and duration at 20 minutes. Simulated stop parameters: The snow system will stop when the following conditions are met: the image recognition module determines that the ice and snow coverage of the front windshield B area exceeds 95%.
[0033] The control system sends the above parameters to the controller of the climate simulation system and starts the temperature control, wind speed and snow simulation subsystem. The goal is to establish and maintain a stable low temperature, high humidity and windy environment in the wind tunnel test area that conforms to the conditions of a severe snowstorm in nature, namely the "target climate conditions".
[0034] S104, through the adjusted climate simulation system, performs climate simulation on the test vehicle that meets the preset environmental threshold until the test vehicle reaches the simulation stop parameter.
[0035] The preset environmental threshold refers to a set of standardized initial conditions that the microenvironment or physical state of the vehicle under test must meet before entering the climate simulation system, to ensure the consistency and comparability of the starting state for each test. This threshold includes at least the temperature range and wind speed range of the vehicle's parking environment.
[0036] Specifically, first, it is confirmed that the vehicle under test has met all the preset environmental thresholds: the vehicle has been continuously placed in the immersion environment chamber at -5±1℃ for no less than 6 hours.
[0037] Next, the environmental wind tunnel system is activated. The vehicle under test is transferred from the immersion environment chamber to the wind tunnel testing area, and its position is adjusted to ensure that the vehicle's longitudinal centerline is aligned with the wind tunnel's centerline. The distance between the bumper grille and the nozzle along the positive X-axis is no less than 2.5m to ensure airflow uniformity. The rear wheels are secured with blocks to prevent displacement under wind load.
[0038] Next, based on the climate simulation parameters obtained in the above steps, the climate simulation system is parameter-set and dynamically adjusted. When all the above parameters are ready and the environment inside the wind tunnel tends to stabilize (temperature fluctuation ≤ ±1℃, wind speed fluctuation ≤ ±1km / h), the snow simulation system is officially started to begin artificial icing treatment on the vehicle's windshield and other key areas. Optionally, during this process, a high-definition camera (12-megapixel, full-frame) installed on the side wall of the wind tunnel is used to continuously photograph the changes in the surface state of the windshield, and the ice and snow coverage area is analyzed in real time using image recognition algorithms.
[0039] Finally, the climate simulation continues until the simulation shutdown parameters are met. For example, image recognition results show that the ice and snow coverage in area B of the windshield is ≥95% (judged as "full coverage"). Once the above conditions are met, the snow simulation system is immediately stopped, the wind speed is reduced to 20 km / h, and the vehicle is left to stand still for at least 30 minutes in an environment of -5±2℃ to simulate the process of further ice solidification under natural conditions. Understandably, the climate simulation phase is complete, and the vehicle is now under standardized "target climate conditions," meeting the prerequisites for conducting subsequent functional tests.
[0040] S106, activate the vehicle under test's response function for the target climate conditions, and conduct vehicle testing for the response function.
[0041] The response function refers to the active safety system and its working mechanism used by the vehicle under test to clear or mitigate ice, snow or condensation on the windshield and other key visible areas after being affected by specific icy and snowy weather conditions. It includes at least one or more of the following: air conditioning defrosting system, heating defogging system, electric heated glass system, and automatic wiper system. Its purpose is to restore the driver's visibility and meet the visibility transmittance requirements stipulated by relevant laws.
[0042] Specifically, first start the vehicle and turn on the air conditioning to defrost mode, maximum fan speed, maximum temperature, and recirculation. Start timing (T=0) from the moment the vehicle starts and the defrost function is activated. Thereafter, observe and record every 5 minutes. Optionally, simultaneously record parameters such as the current air conditioning outlet temperature, blower speed, and battery power consumption.
[0043] The de-icing process is considered complete when any of the following conditions are met: For example, over 90% of the ice covering area B (main field of vision) of the windshield has melted; or the ice in area B is completely melted. After the test, the system automatically summarizes key time points and generates test result data. This test result data reflects the vehicle's ability to restore driver visibility under standard extreme cold conditions and can be used for comparative analysis of different vehicle models or optimization of the vehicle's thermal management system design.
[0044] In one embodiment, a preset temperature threshold corresponding to the test item is obtained; the vehicle under test is subjected to temperature intervention through a test preparation system until the vehicle under test meets the preset temperature threshold.
[0045] The preset temperature threshold refers to the range and duration of ambient temperature at which the vehicle under test must reach thermal equilibrium, either as a whole or in its critical components (especially the windshield and surrounding structure), before the climate simulation begins. This threshold is preset according to the type of test and is used to eliminate the influence of the vehicle's initial temperature difference on the rate of ice / snow melting, ensuring that each test begins at a consistent thermodynamic starting point.
[0046] Specifically, before initiating the testing process, the operator first selects the test type through the human-machine interface, such as "ice melting test" or "snow melting test." In response to this selection, the control system automatically retrieves the preset temperature threshold configuration package associated with the test from the local database or cloud-based operating condition database. For example, when the user clicks "Start Snow Melting Performance Test," the control system automatically loads the preset temperature threshold of "-15±1℃, ≥6h" and prompts the operator to move the vehicle into the immersion environment chamber.
[0047] Then, after the vehicle under test enters the immersion environment chamber, the following temperature intervention steps are performed: environment chamber initialization; start the refrigeration unit and set the target temperature to -15℃; turn on the circulating fan to ensure uniform airflow distribution in the chamber and avoid local overheating or frost formation; close and seal the chamber door to prevent external heat from entering.
[0048] Next, high-precision temperature sensors (accuracy ±0.2℃) are placed at key locations such as the outer surface of the vehicle's windshield, the inside of the A-pillar, the engine hood, and the air intake. These sensors can collect temperature data at each point in real time and upload it to the central control unit. When the temperature change rate at all monitoring points is ≤0.5℃ / h for 30 consecutive minutes, the vehicle is considered to have reached thermal equilibrium. From this point, a timer is started to maintain the ambient temperature within the range of -15±1℃ for at least 6 hours to ensure sufficient cooling of deeper structures (such as the body panels and air conditioning ducts).
[0049] Finally, the control system determines in real time whether all of the following conditions are met: the actual temperature of the environmental chamber is stable within ±1℃ of the set value; the temperature change at key measuring points tends to be stable (ΔT / Δt ≤ 0.5℃ / h); and the continuous low-temperature exposure time is ≥6 hours. Once the above conditions are met, the control system issues a "vehicle has met the preset temperature threshold" signal and allows entry into the next stage, i.e., climate simulation. Understandably, this application achieves vehicle thermal equilibrium through forced immersion, eliminating the influence of the initial temperature difference.
[0050] In one embodiment, a preset wind speed threshold corresponding to the test item is obtained; the wind speed of the vehicle to be tested, placed in the test preparation system, is intervened through a climate simulation system until the vehicle to be tested meets the preset wind speed threshold.
[0051] The preset wind speed threshold refers to the target wind speed value and its duration requirement that are set in advance and applied to the windward side of the vehicle before the snowfall or ice-making operation is started, in order to form a stable air boundary layer on the surface of the vehicle under test and simulate the aerodynamic environment under actual driving conditions.
[0052] Optionally, the preset wind speed threshold is dynamically obtained according to the type of test project to ensure that the external airflow conditions of the vehicle are consistent at the start of each test, thereby improving the repeatability and engineering representativeness of the ice and snow deposition process.
[0053] Specifically, after the vehicle has completed its low-temperature immersion, the environmental wind tunnel system in the climate simulation system applies a set wind speed, i.e., a preset wind speed threshold (such as 40 km / h or 60 km / h), to the vehicle in the immersion environment chamber or transition area for at least 5 minutes to establish a stable external airflow field.
[0054] The control system then determines that the vehicle has met the preset wind speed threshold when all of the following conditions are met: the actual wind speed is stable within ±1 km / h of the set value; the duration is ≥5 minutes; the airflow distribution is uniform, with no obvious turbulence or dead zones (which can be determined with the aid of images); and there is no abnormal vibration or displacement of the vehicle structure (monitored by the acceleration sensor). Once the criteria are met, the control system generates a "wind speed pre-intervention completed" signal and unlocks the next operation permission.
[0055] Understandably, this application, through the wind speed intervention step, helps to eliminate the differences in heat transfer caused by still air and the randomness of snow and ice deposition, further improving the comparability of test results and their engineering reference value.
[0056] In one embodiment, a climate simulation is performed on the vehicle under test that meets a preset environmental threshold using an adjusted climate simulation system; images of the windshield of the vehicle under test are captured using a camera; based on the captured windshield images, a first area of the windshield of the current vehicle under test that is covered by ice and snow is determined, until the first area of the windshield of the current vehicle under test that is covered by ice and snow reaches a first target area.
[0057] The camera refers to a visual sensing device used to acquire real-time images of the outer or inner surface of the windshield of the vehicle under test. Optionally, the camera is a high-resolution industrial-grade camera, installed at an appropriate location within the environmental wind tunnel testing area to ensure a clear view of the entire windshield area of the vehicle. Understandably, the camera, as a key sensor in the feedback control loop, forms a closed loop with the climate simulation system and the control system. That is, it uses image information to determine whether the current physical state has met preset conditions (such as the first target area), thereby deciding whether to terminate the climate simulation and proceed to the next testing phase.
[0058] The windshield refers to the transparent safety glass assembly installed at the very front of the vehicle, in front of the driver, and is a major component of the vehicle's driving visibility. In this application, it specifically refers to the windshield area corresponding to the driver's field of vision area, the passenger's field of vision area, and the overall vehicle visibility safety area.
[0059] The first target area refers to a preset threshold for ice and snow coverage. During climate simulation, when the area of the windshield currently covered by ice and snow reaches this set value (the first target area), the "ice / snow making" phase is considered complete, and the climate simulation should be stopped to prepare for the activation of vehicle response functions (such as air conditioning defrosting). In this application, it specifically refers to the situation where a specific area of the windshield (the driver's field of vision, the passenger's field of vision, and the safe field of vision for the entire vehicle) is covered by ice and snow, reaching this set value, indicating that the "ice / snow making" phase is complete and the climate simulation should be stopped. Optionally, both the first target area and the area of the windshield currently covered by ice and snow can be the actual area size or a proportional area.
[0060] Specifically, refer to Figure 4 A high-resolution industrial camera is installed on the sidewall of the environmental wind tunnel, covering the entire windshield area. This camera is connected to an image processing unit equipped with edge detection algorithms and an ice and snow coverage calculation model to analyze the ice and snow coverage area in the video stream in real time. Furthermore, the control system receives data from sensors and performs tasks such as setting climate parameters, triggering image acquisition, and determining the status of the system.
[0061] First, obtain the climate simulation parameters and simulation stopping parameters corresponding to the test item. For example, if the test item is "Evaluation of the snow melting capacity of the air conditioning defrosting system under extreme cold conditions", then further consult the preset database, retrieve the test configuration file corresponding to "Evaluation of the snow melting capacity of the air conditioning defrosting system under extreme cold conditions", and obtain the climate simulation parameters and simulation stopping parameters corresponding to "Evaluation of the snow melting capacity of the air conditioning defrosting system under extreme cold conditions".
[0062] S402, initiate climate simulation and monitor snow and ice cover status in real time. After the wind tunnel environment stabilizes at -15℃±1℃, start the snow simulation system and perform artificial snowmaking according to the parameters set in Table 3; The S404 simultaneously activates the camera, capturing an image of the windshield every 30 seconds and transmitting it to the image processing unit.
[0063] In one example, the image processing unit determines the current snow and ice coverage area by: converting the image to grayscale and filtering for noise reduction; segmenting the high-reflectivity area (snow and ice features) using the OTSU algorithm; projecting the coordinate range of the main field of view; calculating the percentage of pixels identified as snow and ice within the main field of view; and determining that the "first target area" has been reached when the percentage is ≥95% for two consecutive samples.
[0064] S406 After receiving the signal that "the first target area has been reached", the control system automatically shuts down the snow simulation system; the wind speed is adjusted to 20 km / h, and the low temperature environment (-15℃±2℃) is maintained for another 30 minutes to allow the snow layer to adhere stably; then the wind speed is reduced to 0 km / h to make the airflow area stable.
[0065] In one embodiment, the simulated stop parameters corresponding to the test item are obtained; the vehicle under test's response function for the target climate conditions is activated; the current vehicle parameters of the vehicle under test and the time corresponding to the current vehicle parameters are detected, and the time corresponding to the current vehicle parameters is used to evaluate the vehicle under test's response function; until the vehicle under test reaches the simulated stop parameters, the vehicle test for the response function is stopped.
[0066] Among them, the current vehicle parameters refer to quantifiable physical quantities used to characterize the changes in vehicle status or performance during the execution of the vehicle's response function for target climate conditions after the function is activated. These parameters directly reflect the vehicle's responsiveness under de-icing / de-snow-melting conditions and are important bases for evaluating its safety and comfort.
[0067] The time corresponding to the current vehicle parameter refers to the precise moment when each current vehicle parameter is collected or calculated during the test. The "start time of ice / snow melting condition" can be taken as the zero point (t=0), and all subsequent parameters are marked with a timestamp relative to this starting point.
[0068] Specifically, the first step is to obtain the test stop parameters corresponding to the test item. For example, the test objective is to evaluate the snow melting efficiency of the vehicle's air conditioning defrosting system under extremely cold conditions of -15℃. The control system consults the preset test template library and determines the test stop parameter for this test as: "The snow covering the driver's field of vision area of the windshield has completely melted," that is, the snow melting area reaches 100%. Understandably, this test stop parameter serves as the basis for subsequent judgment on whether to terminate the test.
[0069] Then, the vehicle's response function for the target climate conditions is activated. Optionally, after the snowmaking and settling phases are completed, the wind speed is reduced to 0 km / h, and the environment is stable. The vehicle's power is turned on, and the in-vehicle air conditioning system is simultaneously activated and set to: windshield defrost mode; fan speed and temperature at maximum; recirculation mode in recirculation mode. The control system automatically records this moment as t0, officially activating the response function.
[0070] Starting from time t0, the control system continuously collects two types of information: current vehicle parameters and the corresponding time. For example, by analyzing the images captured by the camera using image processing algorithms, the current vehicle parameter shows that the percentage of the area in the driver's field of vision covered by ice and snow is 55%. The corresponding time is 5 minutes and 20 seconds. Optionally, the data acquisition frequency can be set to capture images every 30 seconds; all data is stored sequentially according to time.
[0071] Finally, the control system continuously compares the real-time collected "current vehicle parameters" with the preset "test stop parameters". When it determines that the snow melt area in the driver's field of vision is equal to 100% or the percentage of the area covered by ice and snow in the driver's field of vision is 0%, the control system automatically pops up a prompt: "Test completed", and performs the following actions, including but not limited to: stopping data collection; saving a complete test log (including all "current vehicle parameters" and their "corresponding time"); and automatically generating a test report, including key indicators.
[0072] This application constructs a complete performance evolution trajectory by continuously detecting the "current vehicle parameters" and their "corresponding time," thus avoiding subjective judgment errors.
[0073] In one embodiment, images are captured from the driver's field of vision, passenger's field of vision, and safe area of vision of the entire vehicle through a camera. Based on the captured images of the driver's field of vision, passenger's field of vision, and safe area of vision of the entire vehicle, the second area and time of ice and snow coverage of each area are determined.
[0074] The driver's field of vision area refers to the key forward field of vision that the driver can observe through the windshield in a normal driving position, and is used to assess the impact of the vehicle's defrosting / de-icing function on the driver's operational safety.
[0075] The passenger-side field of vision refers to the corresponding area of vision on the front windshield on the passenger side. Although it is not the primary field of vision for operation, it affects the occupant's perception and the environmental recognition capabilities of the driver assistance system.
[0076] The full vehicle visibility safety zone refers to a larger area of vision that directly affects driving safety, covering the entire windshield, including the outer edge of the driver's field of vision, to ensure that the vehicle still has basic drivability in complex icy and snowy environments.
[0077] Specifically, during the snow melting process, an image acquisition operation is performed every 5 minutes. For example, a high-definition camera inside the vehicle captures an overall image of the windshield from both the front and rear. Each frame is then digitally processed. Optionally, image recognition algorithms are used to distinguish between snow-covered and transparent areas. Finally, the proportion of residual snow in the driver's field of vision, the passenger's field of vision, and the safe area within the entire vehicle's field of vision is calculated, and the timestamp corresponding to each proportion is recorded.
[0078] The aforementioned technologies overcome the problems of long testing cycles, poor repeatability, and low safety in natural climate road tests; they enable high-precision control of key parameters such as temperature, wind speed, and snowfall density; and provide a standardized, reproducible, multi-level visibility restoration assessment system.
[0079] In one embodiment, for each area of the current driver's field of vision, passenger's field of vision, and overall vehicle safety field of vision, the second area covered by ice and snow in each area is compared with the corresponding second target area; until the second area covered by ice and snow in each area reaches the second target area corresponding to the targeted area, the vehicle test for the response function is stopped.
[0080] The second target area refers to the preset ice and snow coverage threshold that must be achieved in each of the driver's field of vision, passenger's field of vision, and the overall vehicle safety field of vision during the ice or snow melting test. This threshold serves as the technical benchmark for determining whether the test stop parameters are met. When the residual ice and snow area in a certain field of vision decreases to the corresponding "second target area," it is considered that the defrosting / snow removal process in that area has been completed to the prescribed degree, and this can trigger the staged or overall test termination conditions.
[0081] Specifically, the area comparison logic is executed as follows: the area covered by ice and snow in the driver's field of vision at the current moment is compared with the preset threshold for ice and snow coverage area for the driver's field of vision; the area covered by ice and snow in the passenger's field of vision at the current moment is compared with the preset threshold for ice and snow coverage area for the passenger's field of vision; and the area covered by ice and snow in the safe field of vision of the entire vehicle at the current moment is compared with the preset threshold for ice and snow coverage area for the safe field of vision of the entire vehicle.
[0082] Test stop logic execution: When any area reaches its corresponding second target area, a phase completion event signal is generated, which can be used for data analysis but does not stop the overall test; only when all preset areas reach their final target level (e.g., area B reaches 100% connectivity) will the final test stop command be issued, the air conditioning system be turned off and the test be ended.
[0083] Figure 2 A schematic diagram of a vehicle testing apparatus 200 according to an embodiment of this application is shown. Exemplarily, the vehicle testing apparatus 200 includes: The acquisition module 202 is used to acquire the climate simulation parameters and simulation stop parameters corresponding to the test project. The climate simulation parameters are used to generate the target climate conditions of the climate simulation system. The simulation module 204 is used to perform climate simulation on the test vehicle that meets the preset environmental threshold through the adjusted climate simulation system until the test vehicle reaches the simulation stop parameter. Test module 206 is used to enable the vehicle under test's response function to target climate conditions and to conduct vehicle tests on the response function.
[0084] In one embodiment, the simulation module 204 is used to perform climate simulation on the test vehicle that meets the preset environmental threshold through the adjusted climate simulation system; to acquire images of the windshield of the test vehicle through a camera; and to determine the area of the windshield of the test vehicle covered by ice and snow based on the currently acquired windshield images, until the area of the windshield of the test vehicle covered by ice and snow reaches the first target area.
[0085] In one embodiment, the test module 206 is used to obtain the test stop parameters corresponding to the test item; enable the vehicle under test's response function to the target climate conditions; detect the current vehicle parameters of the vehicle under test and the time corresponding to the current vehicle parameters, the time corresponding to the current vehicle parameters being used to evaluate the vehicle under test's response function; and stop the vehicle test for the response function until the vehicle under test reaches the test stop parameters.
[0086] In one embodiment, the test module 206 is used to acquire images of the driver's field of vision area, the passenger's field of vision area, and the safe field of vision area of the entire vehicle through a camera; based on the currently acquired images of the driver's field of vision area, the passenger's field of vision area, and the safe field of vision area of the entire vehicle, the test module 206 determines the area and time of ice and snow coverage in each of the driver's field of vision area, the passenger's field of vision area, and the safe field of vision area of the entire vehicle.
[0087] In one embodiment, the test module 206 is used to compare the area covered by ice and snow in each of the current driver's field of vision area, passenger's field of vision area, and the overall vehicle safety field of vision area with the second target area corresponding to the target area; until the area covered by ice and snow in the target area reaches the second target area corresponding to the target area, the vehicle test for the response function is stopped.
[0088] Figure 3 This illustration shows another structural schematic diagram of the vehicle testing device 200 according to an embodiment of this application. The difference from the above embodiment is that, in addition to the acquisition module 202, simulation module 204, and testing module 206, the vehicle testing device 200 also includes one or a combination of a temperature preparation module 208 and a wind speed preparation module 210.
[0089] In one embodiment, the vehicle testing device further includes a temperature preparation module 208, which is used to obtain a preset temperature threshold corresponding to the test item; and to perform temperature intervention on the vehicle to be tested placed in the test preparation system until the vehicle to be tested meets the preset temperature threshold.
[0090] In one embodiment, the vehicle testing device further includes a wind speed preparation module 210, which is used to obtain a preset wind speed threshold corresponding to the test item; and to intervene in the wind speed of the vehicle to be tested placed in the test preparation system through a climate simulation system until the vehicle to be tested meets the preset wind speed threshold.
[0091] It is understood that the apparatus in this embodiment corresponds to the vehicle testing method in the above embodiment, and the options in the above embodiment are also applicable to this embodiment, so they will not be described again here.
[0092] This application also provides a terminal device, exemplary of which includes a processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program to enable the terminal device to perform the functions of the various modules in the above-described vehicle testing method or vehicle testing apparatus.
[0093] The processor can be an integrated circuit chip with signal processing capabilities. The processor can be a general-purpose processor, including at least one of a Central Processing Unit (CPU), Graphics Processing Unit (GPU), Network Processor (NP), Digital Signal Processor (DSP), Application-Specific Integrated Circuit (ASIC), Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The general-purpose processor can be a microprocessor or any conventional processor, capable of implementing or executing the methods, steps, and logic block diagrams disclosed in the embodiments of this application.
[0094] The memory can be, but is not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), etc. The memory is used to store computer programs, and the processor can execute the computer programs accordingly after receiving execution instructions.
[0095] This application also provides a computer-readable storage medium for storing the computer program used in the aforementioned terminal device. For example, the computer-readable storage medium may include, but is not limited to, various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
[0096] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that, in alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and combinations of blocks in the block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.
[0097] In addition, the functional modules or units in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.
[0098] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a smartphone, personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.
[0099] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.
Claims
1. A vehicle testing method, characterized in that, Applied to a vehicle testing platform, the vehicle testing platform including a climate simulation system, the method includes: Obtain the climate simulation parameters and simulation stop parameters corresponding to the test project. The climate simulation parameters are used to generate the target climate conditions of the climate simulation system. The adjusted climate simulation system is used to simulate the climate of the test vehicle that meets the preset environmental threshold until the test vehicle reaches the simulation stop parameter. Activate the vehicle under test's response function to the target climate conditions, and conduct vehicle testing on the response function.
2. The method according to claim 1, characterized in that, The vehicle testing platform also includes a test preparation system; the preset environmental thresholds include preset temperature thresholds. Before performing climate simulation on the test vehicle that meets the preset environmental threshold using the adjusted climate simulation system, the method further includes: Obtain the preset temperature threshold corresponding to the test item; The test preparation system is used to intervene in the temperature of the vehicle under test placed in the test preparation system until the vehicle under test meets the preset temperature threshold.
3. The method according to claim 2, characterized in that, The preset environmental threshold also includes a preset wind speed threshold; Before performing climate simulation on the test vehicle that meets the preset environmental threshold using the adjusted climate simulation system, the method further includes: Obtain the preset wind speed threshold corresponding to the test item; The climate simulation system is used to intervene in the wind speed of the vehicle under test placed in the test preparation system until the vehicle under test meets the preset wind speed threshold.
4. The method according to claim 1, characterized in that, The simulation stopping parameter is the first target area of the windshield of the vehicle under test covered by ice and snow. The process involves using an adjusted climate simulation system to perform climate simulations on a vehicle under test that meets a preset environmental threshold until the vehicle reaches the simulation stop parameter, including: The adjusted climate simulation system is used to simulate the climate of the test vehicle that meets the preset environmental threshold. The camera captures images of the windshield of the vehicle under test. Based on the acquired windshield image, determine the first area of the windshield of the vehicle under test that is currently covered by ice and snow, until the first area of the windshield of the vehicle under test that is currently covered by ice and snow reaches the first target area.
5. The method according to claim 1, characterized in that, The step of activating the vehicle under test's response function to the target climate conditions and conducting vehicle testing on the response function includes: Obtain the test stop parameters corresponding to the test item; Enable the vehicle under test to respond to the target climate conditions; The current vehicle parameters of the vehicle under test and the time corresponding to the current vehicle parameters are detected. The time corresponding to the current vehicle parameters is used to evaluate the response function of the vehicle under test. The vehicle test for the response function will stop when the vehicle under test reaches the test stop parameter.
6. The method according to claim 5, characterized in that, The current vehicle parameters include the second area of the driver's field of vision, the passenger's field of vision, and the overall vehicle safety field of vision in the windshield that is covered by ice and snow. The detection of the current vehicle parameters of the vehicle under test and the corresponding time of the current vehicle parameters, wherein the time corresponding to the current vehicle parameters is used to evaluate the response capability of the vehicle under test, includes: Images are captured from the driver's field of vision, the passenger's field of vision, and the safe field of vision of the entire vehicle through the camera. Based on the collected images of the driver's field of vision, the passenger's field of vision, and the overall vehicle safety field of vision, the second area and time of ice and snow coverage of each of the driver's field of vision, the passenger's field of vision, and the overall vehicle safety field of vision are determined.
7. The method according to claim 6, characterized in that, The test stopping parameters include the second target area covered by ice and snow in each group of the driver's field of vision area, passenger's field of vision area and the overall vehicle safety field of vision area in the windshield. The step of stopping vehicle testing for the response function until the vehicle under test reaches the test stop parameter includes: For each of the current driver's field of vision area, passenger's field of vision area, and overall vehicle safety field of vision area, the second area covered by ice and snow in each area is compared with the corresponding second target area; Vehicle testing for the aforementioned response function will cease once the second area covered by ice and snow in each region reaches the second target area corresponding to the targeted region.
8. A vehicle testing device, characterized in that, include: The acquisition module is used to acquire the climate simulation parameters and simulation stop parameters corresponding to the test project. The climate simulation parameters are used to generate the target climate conditions of the climate simulation system. The simulation module is used to perform climate simulation on the test vehicle that meets the preset environmental threshold through the adjusted climate simulation system until the test vehicle reaches the simulation stop parameter. The testing module is used to enable the vehicle under test's response function to the target climate conditions and to conduct vehicle testing on the response function.
9. A terminal device, characterized in that, The terminal device includes a processor and a memory, the memory storing a computer program, and the processor executing the computer program to implement the vehicle testing method according to any one of claims 1-7.
10. A computer-readable storage medium, characterized in that, It stores a computer program that, when executed on a processor, implements the vehicle testing method according to any one of claims 1-7.