Method for detecting waterproof performance of automobile cabin

Abstract

The invention discloses an automobile cabin waterproof performance detection method, which comprises the following steps of S1, preparing a test vehicle, and preprocessing the test vehicle to enable the test vehicle to meet test requirements; s2, determining a waterproof test area of the to-be-tested vehicle; s3, connecting a detection device to a to-be-tested vehicle through an OBD interface, and then starting the vehicle; S4, splashing water in the waterproof test area, and then reading the fault code of the whole vehicle through the OBD interface in real time by the detection device to obtain a fault code signal of the vehicle after watering; and S5, the upper computer is connected with the detection equipment, and fault codes of the electric appliances in the vehicle intelligent cabin in the test process are obtained and used for evaluating the waterproof performance of the intelligent cabin. The method has the advantages that the waterproof performance of the vehicle can be rapidly detected, the waterproof performance of the vehicle can be quantitatively or qualitatively judged according to the obtained data in the experiment process, and research and development of an intelligent cabin of the vehicle can be guided accordingly.

Description

Technical Field

[0001] The invention relates to the field of automobile cockpit detection, and in particular to a method for detecting the waterproof performance of an automobile cockpit. Background Art

[0002] As cars become more intelligent, more intelligent electrical components are being used in the cockpit compared to traditional cars. On the one hand, it brings users a more immersive experience, but on the other hand, it also brings certain electrical safety risks. The risk of the electronic components in the cockpit being exposed to water due to user "mistakes" is further increased, and the resulting vehicle failures will also increase accordingly.

[0003] With the development of intelligence and the increase of electrical appliances in the prior art, in order to achieve waterproofing of components in the car, the traditional idea is to use chips and controllers with waterproof properties, and set waterproof diaphragms, sealing strips, waterproof glue, etc. to achieve the purpose of waterproofing from multiple angles.

[0004] However, although this solution can meet the waterproof requirements of electrical components in the vehicle's smart cockpit to a certain extent, the specific waterproof performance cannot be evaluated. In other words, in order to meet the waterproof requirements of the vehicle's smart cockpit, some components with waterproof performance are used, but it is actually impossible to know whether these components can meet the waterproof requirements of daily use when they are used in the smart cockpit, and it is also impossible to know the waterproof level. Since it is impossible to test the waterproofness of the smart cockpit, it is impossible to make targeted adjustments to the waterproofness of the smart cockpit during the vehicle development test phase, and it is impossible to meet the requirements of the vehicle development test. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for detecting the waterproof performance of an automobile cabin, which is used to detect the waterproofness of an intelligent cabin during a test phase to guide the development of vehicle models.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: a method for detecting the waterproof performance of a car cabin, comprising the following steps:

[0007] S1. Prepare the test vehicle and pre-treat it to meet the experimental requirements;

[0008] S2. Determine the waterproof test area of ​​the vehicle to be tested;

[0009] S3, connect the testing equipment to the vehicle to be tested through the OBD interface, and then start the vehicle;

[0010] S4, sprinkle water in the waterproof test area, and then use the detection equipment to read the vehicle fault code through the OBD interface in real time to obtain the vehicle fault code signal after the water is sprinkled;

[0011] S5. The host computer is connected to the testing equipment to obtain the fault codes of the electrical appliances in the vehicle smart cockpit during the test, which are used to evaluate the waterproof performance of the smart cockpit.

[0012] In step S1, developer is evenly applied to the surface area of ​​the wiring harness joints of the electronic and electrical components in the smart cockpit electronic appliances in the test vehicle. A wireless camera module is arranged around the smart cockpit electronic and electrical components, and the wireless camera module takes pictures at an angle facing the electronic and electrical components and their wiring harness interfaces coated with developer.

[0013] The wireless camera module has a built-in power supply or is connected to the vehicle's low-voltage power supply. After the vehicle startup test begins, the wireless camera monitors the image data of electronic components in real time and uploads the data to the host computer through wireless communication.

[0014] When the vehicle is in use, locations in the smart cockpit with water risks serve as test areas within the cockpit.

[0015] In step S3, after the vehicle is started, the vehicle is kept in a powered-on state or a high-voltage state for a set time, and the fault codes of the electronic appliances in the smart cockpit are read in real time through the detection equipment through the OBD interface; if the electronic appliances in the smart cockpit are normal while the vehicle is kept in a powered-on state or a high-voltage state for a set time, step S4 is entered, otherwise the test is stopped.

[0016] In step S4, water stains caused by a user knocking over a cup are simulated by splashing water on the waterproof test area, and then timing is started. Before the timing expires, the vehicle fault code is read in real time through the OBD interface and uploaded to the host computer.

[0017] During the experiment, if a fault code other than that of the smart cockpit electronic appliances is read through the OBD interface, a notice to stop the test will be immediately sent to the experimenter through the host computer.

[0018] The host computer determines the waterproof performance of the vehicle's intelligent cockpit by reading the fault codes and collected image data during the vehicle test phase.

[0019] The advantages of the present invention are that the waterproof performance of the vehicle can be quickly tested, and the waterproof performance of the vehicle can be quantitatively or qualitatively judged based on the data obtained during the experiment. This can guide the research and development of the vehicle's intelligent cockpit and improve the waterproof performance of subsequent vehicle development. The experimental process is simple, and the collected data can be analyzed and processed by the host computer to obtain the corresponding waterproof performance evaluation, and the experimental process data can be called to provide basic data reference for subsequent upgrade analysis. This method can discover the potential risks of cabin water management caused by user "mistakes" earlier and more timely in the vehicle development stage, reducing complaints from users in the later stage of vehicle use; in the face of the increasing number of intelligent networked cockpit configurations on vehicles on the market, this method innovatively provides a test method and evaluation method for cabin waterproof performance, which can guide more car companies to develop user experience that pays attention to cabin waterproof performance and promote the establishment of industry standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0021] Figure 1 This is a diagram of the hardware architecture involved in the test method of the present invention. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0023] In view of the lack of verification methods in the prior art, the present invention innovatively proposes a test method and evaluation method for the waterproof performance of automobile cabins, aiming to verify and avoid the potential risks of cabin waterproof performance caused by user "mistakes" to the greatest extent during the vehicle development stage. By conducting waterproof tests on the electronic and electrical components of the smart cabin of the vehicle model developed in the test stage, the waterproof performance of the electronic and electrical appliances in the smart cabin can be quantitatively or qualitatively obtained, which can effectively guide the development of the smart cabin of the vehicle model in the early development stage.

[0024] A method for detecting the waterproof performance of a vehicle cabin in this embodiment includes the following steps:

[0025] S1. Prepare the test vehicle and pre-treat the test vehicle to meet the experimental requirements; evenly apply developer to the surface area of ​​the wiring harness joints of the electronic and electrical components in the smart cockpit electronic and electrical appliances in the test vehicle. A wireless camera module is arranged around the smart cockpit electronic and electrical components, and the camera angle of the wireless camera module is facing the electronic and electrical components coated with developer and their wiring harness interfaces. The wireless camera module has a built-in power supply or is connected to the vehicle's low-voltage power supply. After the vehicle startup test begins, the wireless camera monitors the image data of the electronic and electrical components in real time and uploads the data to the host computer through wireless communication.

[0026] S2. Determine the waterproof test area of ​​the vehicle to be tested; the location in the smart cockpit with water risk when the vehicle is in use is used as the test area in the cockpit.

[0027] S3. Connect the detection equipment to the vehicle to be tested through the OBD interface, and then start the vehicle; after the vehicle is started, keep the vehicle in a powered-on state or a high-voltage state for a set time, and read the fault codes of each electronic appliance in the smart cockpit through the OBD interface through the detection equipment in real time; if all the electronic appliances in the smart cockpit are normal while the vehicle is powered-on or in a high-voltage state for a set time, proceed to step S4, otherwise stop this test.

[0028] S4. Sprinkle water in the waterproof test area, and then use the detection equipment to read the vehicle fault code in real time through the OBD interface to obtain the vehicle fault code signal after sprinkling water; simulate the water stains caused by the user knocking over the water cup, sprinkle water in the waterproof test area, and then start timing. Before the timing expires, read the vehicle fault code in real time through the OBD interface and upload it to the host computer.

[0029] S5. The host computer is connected to the testing equipment to obtain the fault codes of the electrical appliances in the vehicle's smart cockpit during the test, which are used to evaluate the waterproof performance of the smart cockpit. During the experiment, if a fault code other than the smart cockpit electronic appliances is read through the OBD interface, a notice to stop the test is immediately sent to the experimenter through the host computer. The host computer judges the waterproof performance of the vehicle's smart cockpit by reading the fault codes during the vehicle test phase and the collected image data.

[0030] The above steps will be described in detail below:

[0031] like Figure 1 As shown, this embodiment provides a method for testing and evaluating the waterproof performance of a vehicle cabin, which specifically includes the following steps:

[0032] S1: Preparation of test tools and consumables, preparation or construction of testing equipment, OBD interface, wireless camera module, developer, measuring cup, etc.; wherein the testing equipment is a dedicated fault detection equipment, which has an interface that can be connected to the vehicle's OBD interface. The testing equipment can be connected to the vehicle's OBD interface directly or through an OBD adapter interface, and is used to read the vehicle's fault code and other information. The vehicle's wading fault information can be evaluated through the fault code; the wireless camera module is a miniature camera, which is used to capture images of electronic appliances in the test area. It can be powered by the vehicle's low-voltage power supply or an external battery; a wireless communication module is built in both the testing equipment and the wireless camera module, and a connection with the host computer is established based on the wireless communication module, which is used to upload the data collected by the testing equipment and the wireless camera module to the host computer. The host computer can automatically analyze the uploaded data to give experimental results or display the experimental collected data to engineers, so that engineers can judge the waterproof test results based on the collected data.

[0033] S2: Prepare the test vehicle. Prepare a representative vehicle in terms of cockpit electronic and electrical layout, or develop a pre-research vehicle. The selected vehicle should cover the cockpit electrical equipment of the vehicle as comprehensively as possible. The test site should be selected in a relatively open area, and fire extinguishing equipment must be placed at the test site to deal with possible emergencies. After the test vehicle is ready, enter step S3.

[0034] S3: The test area in the cabin is determined. Any area in the cabin where there are electronic and electrical components nearby and where a water cup (can, bottle, etc.) can be placed, or where water flow may be involved, should be used as the test area; analyze the areas where water stains are easily spilled or where water cups are easily placed and overturned during vehicle use, and identify these areas as areas with water immersion risks and use them as test areas.

[0035] S4: After the test area is determined, determine the electronic and electrical components in the test area, remove the interior decoration that blocks the original electronic and electrical components in the test area in the cockpit, and evenly apply the developer on the surface of the electronic and electrical components and the connection of the wiring harness connector where there may be potential risks. At the same time, install the wireless camera module in the interior decoration or other positions to point the camera toward the surface of the electronic and electrical components and its wiring harness interface, so as to capture its image data. The wireless camera module has a built-in battery or is connected to the vehicle's low-voltage battery through a wiring harness for power supply. The wireless camera module has a built-in camera, a wireless communication chip, etc. The camera is used to capture images, and the wireless communication chip is used to establish communication with the host computer and upload the captured image data to the host computer. After applying the developer and installing the wireless camera module, wait for the developer to dry. After the developer is dry, reassemble the interior decoration and restore the vehicle state; then connect the detection equipment to the OBD interface of the vehicle. Since the detection equipment has a built-in wireless communication chip, manually configure the wireless communication chip to establish a connection with the host computer, which is used to obtain the vehicle's fault code through the OBD interface during the experiment to determine the impact of water immersion.

[0036] S5: Before the test begins, fuel vehicles and hybrid vehicles must be powered on, and pure electric vehicles must be powered on. They must maintain this state for 30 minutes before an initial status check is performed. In this state, the vehicle fault code is read through the OBD interface, and manual inspection is performed to check whether the vehicle electrical function status is normal, and records are kept. The test is allowed only when the host computer does not read the fault code through the OBD port and manual inspection feeds back a signal that the electrical equipment is in a normal state. Otherwise, the test is terminated.

[0037] S6: After the test starts, 300 ml of water is poured from the test area where water cups (cans, bottles, etc.) can be placed to the test area of ​​the smart cockpit to simulate the user's "mistake" to knock over the water cup, such as: the auxiliary instrument area, the door guard area, etc.; 150 ml of water is poured in the test area where water may flow due to user "mistakes", such as: the instrument panel area, the seat area, etc. After the experiment starts, the set amount of water is poured to the test area, and then the host computer obtains image data and fault codes through the wireless communication module and the detection equipment respectively.

[0038] S6. The host computer evaluates the waterproof performance of the smart cockpit according to the fault codes and graphic data uploaded to the host computer during the experiment. During the test, if the fault code received by the host computer is a major fault or prompt code such as the vehicle's automatic high voltage reduction, insulation fault alarm, or driving safety alarm prompt fault code (such as the braking system, steering system, and high-voltage charging and discharging system), it means that the flooding affects the safety of the entire vehicle. At this time, the host computer sends an alarm signal to the experimenter to notify the experimenter to stop the test and control the vehicle to shut down and power off. At this time, the waterproof performance is at the worst level. Otherwise, within the test time range, the fault code and image data transmitted from the OBD interface are collected in real time, and the electronic and electrical components are analyzed based on the fault code to determine whether they are working properly, and the image data is analyzed based on the water flow to determine whether the water flow has penetrated into the surface area of ​​the electronic and electrical components. The waterproof performance level is comprehensively judged based on the fault code and water immersion image data, and the waterproof research and development work of the smart cockpit of the vehicle model is guided.

[0039] Whether the vehicle electrical function can be used normally can be determined by analyzing the fault code on the host computer to determine whether there is any electronic fault; the water intrusion status of the electronic and electrical components can be determined and analyzed based on the video image data. After the test, the overall evaluation of the vehicle cockpit waterproof performance can be made. It can be quantitatively or qualitatively judged by combining multiple angles such as the presence of fault codes, the presence of water immersion, and the time when water immersion reaches the electronic and electrical components. The specific judgment rules can be specified or set by the OEM, thereby providing a fast and data-supported test and detection method for the waterproofing of the smart cockpit. According to this method, each OEM can pre-test whether the waterproofing of the electronic and electrical components of the smart cockpit meets the requirements and whether it needs to be adjusted and optimized when developing vehicles, which can achieve the purpose of guiding the development of the smart cockpit. Moreover, if functional failures and safety risk alarms occur during the test, the specific components that cause the failure can be clearly found through step-by-step analysis of the image video data and the analysis of the fault code, and then the components can be redesigned for waterproofing. After the rectification of the problematic components is completed, the components are replaced and the above test is carried out again until the problem is finally solved, thereby meeting the waterproofing requirements of the smart cockpit.

[0040] The present invention aims to verify and avoid the potential risks of cabin waterproof performance caused by user "mistakes" to the greatest extent during the vehicle development stage, and provide a safer and more comfortable experience for subsequent users. In particular, for vehicles with an increasing number of electronic and electrical components in the current cabin system, full verification is necessary. Specifically, the vehicle cabin waterproof performance test method and evaluation method proposed in the present invention have the following two advantages:

[0041] 1) This method can detect potential risks of cabin water management caused by user "errors" earlier and more timely in the vehicle development stage, reducing user complaints in the later stage;

[0042] 2) In view of the increasing number of intelligent connected cockpit configurations on the market, this method innovatively provides cockpit waterproof performance test methods and evaluation methods, which can guide more automakers to develop user experience that focuses on cockpit waterproof performance and promote the establishment of industry standards.

[0043] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A method for detecting the waterproof performance of a car cabin, characterized in that: The steps include: S1. Prepare the test vehicle and pre-treat it to meet the experimental requirements; S2. Determine the waterproof test area of ​​the vehicle to be tested; S3. Connect the testing equipment to the vehicle to be tested via the OBD interface, and then start the vehicle; S4, sprinkle water in the waterproof test area, and then use the detection equipment to read the vehicle fault code through the OBD interface in real time to obtain the vehicle fault code signal after the water is sprinkled; S5. The host computer is connected to the testing equipment to obtain the fault codes of the electrical appliances in the vehicle smart cockpit during the test, which are used to evaluate the waterproof performance of the smart cockpit.

2. A method for detecting the waterproof performance of a car cabin as claimed in claim 1, characterized in that: In step S1, developer is evenly applied to the surface area of ​​the wiring harness connectors of the electronic and electrical components in the smart cockpit electronic appliances in the test vehicle.

3. A method for detecting the waterproof performance of a car cabin as claimed in claim 2, characterized in that: A wireless camera module is arranged around the electronic and electrical components of the smart cockpit, and the wireless camera module has a photographing angle facing the electronic and electrical components coated with developer and their wiring harness interfaces.

4. A method for detecting the waterproof performance of a car cabin as claimed in claim 3, characterized in that: The wireless camera module has a built-in power supply or is connected to the vehicle's low-voltage power supply. After the vehicle startup test begins, the wireless camera monitors the image data of electronic components in real time and uploads the data to the host computer through wireless communication.

5. A method for detecting the waterproof performance of a car cabin according to any one of claims 1 to 4, characterized in that: When the vehicle is in use, locations in the smart cockpit with water risks serve as test areas within the cockpit.

6. A method for detecting the waterproof performance of a car cabin according to any one of claims 1 to 4, characterized in that: In step S3, after the vehicle is started, the vehicle is kept in a powered-on state or a high-voltage state for a set time, and the fault codes of the electronic appliances in the smart cockpit are read in real time through the detection equipment through the OBD interface; if the electronic appliances in the smart cockpit are normal while the vehicle is kept in a powered-on state or a high-voltage state for a set time, step S4 is entered, otherwise the test is stopped.

7. A method for detecting the waterproof performance of a car cabin according to any one of claims 1 to 4, characterized in that: In step S4, water stains caused by a user knocking over a cup are simulated by splashing water on the waterproof test area, and then timing is started. Before the timing expires, the vehicle fault code is read in real time through the OBD interface and uploaded to the host computer.

8. A method for detecting the waterproof performance of a car cabin according to any one of claims 1 to 4, characterized in that: During the experiment, if a fault code other than that of the smart cockpit electronic appliances is read through the OBD interface, a notice to stop the test will be immediately sent to the experimenter through the host computer.

9. A method for detecting the waterproof performance of a car cabin according to any one of claims 1 to 4, characterized in that: The host computer determines the waterproof performance of the vehicle's intelligent cockpit by reading the fault codes and collected image data during the vehicle test phase.

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