Intelligent driving system is a vehicle control system that can perceive, make decisions and execute driving tasks autonomously. Common intelligent driving systems include:
Automatic parking system: It can automatically control the vehicle to complete the parking process, including searching for a parking space, steering, accelerating, braking and other operations.
Adaptive cruise system: It can adaptively adjust the vehicle speed according to factors such as vehicle speed, distance between vehicles and traffic conditions, and automatically maintain a safe distance between the vehicle and the vehicle in front.
Lane Keeping Assist System: It can automatically identify lane lines and control the vehicle to keep driving in the lane to avoid deviation from the lane or collision.
Emergency Brake Assist System: It can automatically sense the obstacles ahead and take emergency braking measures to prevent collisions.
Blind Spot Monitoring System: It can monitor the blind spots around the vehicle and send out warning signals to avoid traffic accidents in the blind spots.
Autonomous driving system: It can perceive, make decisions and execute driving tasks completely autonomously without human intervention.
These intelligent driving systems have different functions and performances, but all aim to improve the safety, comfort and efficiency of vehicles, and bring better driving experience to drivers.
At present, many car brands around the world have begun to use automatic driving systems. The following are some of the more well-known brands:
Tesla: Tesla is the first automaker to commercially launch an autonomous driving system, and its Autopilot system can realize autonomous driving on the highway.
Mercedes-Benz: Mercedes-Benz's Drive Pilot system can realize functions such as adaptive cruise control, lane keeping and automatic parking.
BMW: BMW's Active Cruise Control and Traffic Jam Assistant systems can help drivers navigate autonomously in heavy traffic.
Audi: Audi's Traffic Jam Pilot system can drive autonomously in heavy traffic, but it's still in beta for full-speed autonomous driving.
General Motors: GM's Super Cruise system enables autonomous driving on the highway and features eye-tracking technology.
Toyota: Toyota's Lexus-branded LS can do things like self-parking and adaptive cruise control.
Honda: Honda's Acura-branded RLX gets features like adaptive cruise control and lane keeping.
It should be noted that although these car brands have begun to use autonomous driving systems, these systems are still in the stage of continuous development and improvement, and drivers still need to be alert and ready to take over control of the vehicle at any time.
There are a large number of autopilot system technology providers in China, and the following are some well-known companies:
Baidu Apollo: Baidu Apollo is Baidu's open platform for autonomous driving, providing a full range of autonomous driving solutions, including sensors, computing platforms, software systems, etc., and has already cooperated with many automakers.
Chehejia: Chehejia is a technology company focusing on the field of automotive intelligence. Its automatic driving system includes modules such as perception, decision-making, and control. At present, it has realized automatic driving on many models.
Qiantu Motors: Qiantu Motors is a new energy vehicle manufacturer. Its autonomous driving system includes various sensors such as lidar, camera, and millimeter-wave radar, and realizes high-precision maps and lane recognition and automatic changes through artificial intelligence technology.
So how do we test the intelligent driving system? Let's listen to the editor to tell you in detail:
Assisted driving system test
Automobile assisted driving system testing should include the following steps:
Confirm the test site: The test site should be a flat, spacious, and obstacle-free road, preferably a closed test site without other vehicles and pedestrians.
Check the vehicle: Check whether the vehicle's assisted driving system is working properly, including radar, camera, sensor and other equipment.
Determine the test items: According to the different functions of the assisted driving system, determine the test items, such as automatic parking, automatic car following, automatic lane change, etc.
Carrying out the test: Carry out the test according to the requirements of the test project, record the test results, and analyze and solve the problems that arise during the test.
Statistical analysis data: conduct data analysis based on test results, evaluate the performance and reliability of the assisted driving system, and determine whether adjustments and improvements are required.
Repeated testing: retest the adjusted and improved assisted driving system to ensure the stability and reliability of the system.
In short, the test of the assisted driving system of the car needs to be carried out in strict accordance with the regulations to ensure the safety and effectiveness of the test.
Vehicle automatic obstacle avoidance system test
The test of the vehicle automatic obstacle avoidance system requires the following steps:
Determine the test site: The test site should be an open and flat place without obstacles and other vehicles to ensure the safety and accuracy of the test.
Set the test route: The test route should include different scenarios such as straight driving, curve driving, obstacle avoidance, sudden braking, etc., to test the performance of the automatic obstacle avoidance system in different situations.
Install test equipment: It is necessary to install test equipment such as sensors and cameras to monitor and record the state of the vehicle.
Conduct testing: During the testing process, the vehicle needs to be tested many times to ensure the accuracy and reliability of the test data. During the test, the vehicle's speed, acceleration, steering angle and other data need to be recorded for analysis and evaluation.
Analysis of test results: According to the test data, the performance of the vehicle automatic obstacle avoidance system is evaluated and analyzed to determine its safety and reliability. If the test results are unsatisfactory, the system needs to be optimized and improved until the expected performance level is achieved.
Park Assist System Test
This part of the test mainly includes the following aspects:
Test sensors: The sensors of the parking assistance system are mainly used to detect obstacles around the vehicle, so the sensitivity and accuracy of the sensors need to be tested. During the test, obstacles of different sizes and shapes can be placed around the vehicle to observe whether the sensor can correctly identify and prompt.
Test camera: The camera of the parking assistance system is mainly used to provide real-time images of the surrounding environment of the vehicle, so it is necessary to test the clarity and image stability of the camera. During the test, obstacles with different lights and angles can be placed around the vehicle to observe whether the camera can clearly display the obstacles and the surrounding environment.
Test prompt sound: The prompt sound of the parking assistance system is mainly used to remind the driver of the obstacles around the vehicle, so the volume and accuracy of the prompt sound need to be tested. During the test, obstacles of different distances and sizes can be placed around the vehicle to observe whether the prompt sound can prompt in a timely and accurate manner.
Test overall system performance: The overall performance of the park assist system includes the ability of the sensors, camera and chime to work together. During the test, the vehicle can be parked at different positions and angles to observe whether the parking assistance system can accurately and timely identify obstacles and issue prompts.
It should be noted that when conducting parking assistance system tests, it is necessary to ensure that the test environment is safe to avoid collisions and other accidents. At the same time, it is also necessary to pay attention to the safety of vehicles and test equipment during the test.
Adaptive Cruise Control (ACC) System Test
This part of the test can be tested through the following steps:
Static test: In the parking state, check whether the functions of the ACC system are normal. This includes checking that sensors, cameras, radar, etc. are working properly, and checking that the system is able to correctly recognize road signs and lane markings.
Dynamic test: During driving, test the adaptive ability of the ACC system. Under different vehicle speeds and traffic conditions, test whether the ACC system can automatically adjust the vehicle speed and maintain a safe distance from the vehicle in front.
Emergency braking test: test whether the ACC system can automatically brake in an emergency, and check whether the braking distance meets the safety requirements.
Vehicle crash test: Test the safety performance of the ACC system under the condition of simulated vehicle crash. Check whether the system can detect the risk of collision in time and take appropriate measures to avoid accidents.
Real road test: Test the performance of the ACC system on a real road. Test whether the system works well in different road and weather conditions, and check whether the system can adapt to different driving styles and driving habits.
It should be noted that during the test, it is necessary to ensure that traffic rules and safety requirements are strictly followed to ensure that no danger is caused to other road users during the test.
Automobile emergency braking system test
It can be divided into the following steps:
Check the brake system: First of all, you need to check whether the brake system of the vehicle is normal, including the level of brake fluid, the wear of brake discs and brake pads, etc.
Test the braking distance: On a safe test site, drive at a certain speed, then step on the brake pedal suddenly, and record the distance the vehicle stops. This distance should be much smaller than the braking distance of the vehicle.
Test reaction time: Also on a safe test site, drive at a certain speed, then step on the brake pedal suddenly, and record the time when the vehicle stops. This time should be much shorter than the braking time of the vehicle.
Simulated emergency situation: On a safe test site, conduct a test to simulate an emergency situation, such as suddenly encountering a sudden stop of the vehicle in front or an obstacle, etc., to test the response time and braking distance of the emergency braking system.
Check system failure: During the test, pay attention to observe whether the emergency braking system fails, such as whether the brake light is on, whether there is any abnormal feeling on the brake pedal, etc.
It should be noted that the test of the emergency braking system needs to be carried out on a safe site to avoid danger to other vehicles and pedestrians. At the same time, attention should be paid to the maintenance and maintenance of the vehicle during the test to ensure the normal operation of the braking system.
Vehicle Power Management System Test
The test of electric vehicle power management system can generally be divided into the following steps:
Basic test of the power management system: First, it is necessary to test the basic functions of the power management system, including power on and off, charging and discharging control, etc. Use the dedicated test software or hardware tools of the power management system for testing.
Battery test: The battery is the core component of the electric vehicle power management system, and the battery needs to be tested, including battery capacity, battery voltage, battery internal resistance and other parameters.
Charging test: test the charging function of electric vehicles, including charging time, charging current, charging protection, etc.
Discharge test: test the discharge function of electric vehicles, including battery life, current output, output protection, etc.
Complete vehicle test: test the electric vehicle as a whole, including performance test, safety test, etc.
When testing the power management system of electric vehicles, it is necessary to pay attention to safety issues and avoid dangerous situations such as battery leakage and short circuit. At the same time, the test needs to be carried out in strict accordance with the test process to ensure the accuracy of the test results.
Car Bluetooth Test
Car Bluetooth test can be carried out according to the following steps:
Confirm that the car Bluetooth device has been connected to the mobile phone or other Bluetooth devices.
Play audio files, such as music or voice guidance.
Move the mobile phone or other Bluetooth devices in the car to observe the stability and quality of audio transmission.
To test the receiving distance of the Bluetooth device, you can gradually move away from the vehicle outside the vehicle to observe the stability and quality of audio transmission.
To test the connection stability of Bluetooth devices, you can move mobile phones or other Bluetooth devices in the car to observe whether the connection will be disconnected or other abnormalities occur.
To test the compatibility of Bluetooth devices, you can use different models and brands of mobile phones or other Bluetooth devices to connect to car Bluetooth devices, and observe the stability and quality of connection and audio transmission.
For the voice call function of the car Bluetooth, a simulated call test can be carried out to observe the call quality and stability.
It should be noted that when carrying out the on-board Bluetooth test, it is necessary to ensure that the vehicle is in a safe parking state, and it is strictly forbidden to test while driving. At the same time, also comply with local traffic laws and regulations.
Car Navigation Test
Car navigation testing usually needs to be divided into the following steps:
Prepare test routes: Choose from different types of roads and traffic situations, including highways, city roads, country roads, mountain roads, etc., and different traffic conditions, such as congestion, accidents, construction, etc.
Prepare test equipment: Prepare vehicle navigation equipment and test tools, such as GPS locator, speedometer, recording equipment, etc.
Test: Test according to the preset route and traffic conditions, and record the performance of the car navigation equipment, including navigation accuracy, route planning, voice prompts, speed and time, etc.
Analysis of test results: According to the test data and records, analyze the performance of the car navigation equipment, find out the problem, and propose improvement measures.
Optimizing the test: According to the analysis results, optimize the test route, test equipment and test method to further improve the accuracy and reliability of the test.
In short, car navigation testing needs to be carried out meticulously to ensure the performance and quality of car navigation equipment.
Vehicle reversing radar system test
The test steps of the vehicle reversing radar system are as follows:
Check whether the power supply and line connection of the radar system are normal, and ensure that the radar system can work normally.
Place an obstacle simulator, such as a bucket or a ball, on flat ground about 2 meters from the rear of the vehicle.
Start the vehicle, put the car into the reverse gear, and observe whether the reversing radar system can accurately detect obstacles.
If the radar system cannot detect obstacles, it is necessary to check whether the radar sensor is damaged or dirty and needs to be cleaned or replaced.
If the radar system detects an obstacle, it is necessary to observe whether the prompt information on the screen is accurate, such as whether the distance prompt is accurate, etc.
If the prompt information is inaccurate, you need to adjust the calibration parameters of the radar system so that it can detect obstacles more accurately.
During the test, it is strictly forbidden to extend hands or other objects into the detection range of the reversing radar system to avoid accidents.
Vehicle driving recorder system test
Driving recorder can be carried out from the following aspects:
Video clarity test: test the video clarity, color reproduction, contrast, etc. of the car driving recorder system, including testing the video effects under different light, weather, road conditions, etc.
Video stability test: test the video stability of the car driving recorder system, including whether there will be problems such as screen jitter and blur during the driving process of the test system.
Video angle test: test the video angle of the vehicle driving recorder system, including testing whether the system can record the vehicle driving process in an all-round way and whether the video angle can be adjusted.
Recording capacity test: test the recording capacity of the vehicle driving recorder system, including the storage capacity and recording time of the test system.
Video loop coverage test: test the video loop coverage function of the vehicle driving recorder system, including testing whether the system can automatically overwrite old video files.
Emergency event storage test: test the emergency event storage function of the vehicle driving recorder system, including testing whether the system can automatically save video files of emergency events, and whether the saved video files can be backed up to other devices in time.
Driving recorder software test: test the software functions of the vehicle driving recorder system, including testing whether the system's settings, export, backup, sharing and other functions are complete and reliable.
The above are some common test suggestions for vehicle driving recorder system, you can test according to the actual situation.
Vehicle voice control system test
Vehicle voice control system testing can be carried out from the following aspects:
Speech recognition accuracy test: Test the recognition accuracy of the vehicle-mounted voice control system for the user's voice commands, including testing the system's ability to recognize different languages, accents, speech speed, volume, tone, etc.
Voice command response speed test: test the response speed of the vehicle voice control system to the user's voice command, including the response speed of the test system in different network environments.
Voice interaction fluency test: Test the interaction fluency between the vehicle-mounted voice control system and the user, including whether the test system can accurately understand the user's intention and respond to the corresponding voice prompts.
Voice control function test: test whether the functions of the vehicle voice control system are complete and reliable, including whether the test system can accurately execute the user's voice commands, such as playing music, navigating, and making calls.
Stability test of the voice control system: test the stability and reliability of the vehicle voice control system, including whether the test system has abnormalities, crashes, etc., and the performance of the test system under long-term use, high temperature, and low temperature environments.
Human-computer interaction interface test: test whether the human-computer interaction interface of the vehicle voice control system is friendly and easy to use, including the prompt voice, icon, interface design and other aspects of the test system.
The above are some common test suggestions for in-vehicle voice control systems, and tests can also be carried out according to the actual situation.
In the past two years, the development of our domestic automobile industry has attracted much attention, and the application of intelligent driving systems has been on the CCTV Spring Festival Gala. The demand for on-board testing and testing of intelligent driving systems is also growing rapidly:
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