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Application of Ultrasonic Radar in Automobile
Release time:
2023-12-11 00:00
Source:
The application of ultrasonic radar in the automotive field has become more and more extensive, and it plays an important role in vehicle safety, driving assistance and automatic driving. The specific application of ultrasonic radar in automobiles will be described in detail below.
01. Reversing radar
Reversing radar is one of the applications of ultrasonic radar in automobiles. It is mainly used to assist the driver to avoid collision with obstacles behind when reversing or parking. When the car slowly passes the location, the APA sensor installed on the side of the vehicle will return the relationship between the detection distance and time, and the approximate length of the location can be obtained by calculation. If the detected length exceeds the minimum length required for the vehicle to park, it is considered that there is a parking space in the current space. In addition, the rear APA will also generate a similar signal curve for secondary verification of the location to ensure the safety of parking.
02. Automatic parking assist system
The application of ultrasonic radar in automobiles is mainly concentrated in automatic parking assist systems. The system achieves 360-degree obstacle ranging through ultrasonic radars installed in the front, rear, left and right. In particular, the automatic parking assist system of some models is equipped with 8 PDC radars and 4 PLA radars. The PDC radar is used to detect surrounding obstacles, while the PLA radar is used to measure the length of the parking space. These radar systems can monitor the distance between the vehicle and the obstacle in real time, and feed the information back to the vehicle, thereby helping the vehicle to adjust its body posture and speed, and successfully complete automatic parking.
03. Front anti-collision warning function
The forward anti-collision warning function mainly relies on ultrasonic radar for real-time monitoring and identification. This function continuously obtains the distance information of the target obstacle in front through the ultrasonic radar, and transmits the data to the actuator after analysis and processing. When the system detects a potential risk of collision, it warns the driver. However, it should be clear that this early warning system only provides warning and does not have automatic braking or other functions to control the vehicle.
04. High-speed lateral assistance
High-speed lateral assist is a feature introduced by Tesla ModelS in the AutoPilot1.0 era to improve the safety and comfort of highway cruising. This feature utilizes the APA ultrasonic radar originally used for parking. When an approaching vehicle is detected on the left, the ModelS will autonomously fine-tune to the right when confirming that there is enough space on the right, thereby reducing the risk of collision with the left vehicle. This automatic adjustment function ensures that the vehicle can maintain stability and safety when driving at high speeds.
05, lane change auxiliary system
The lane change assist system uses ultrasonic radar components to detect obstacles or moving vehicles on both sides of the body. When the driver changes lanes, the system will determine whether there is a risk of collision. By combining the auxiliary driving function of the vehicle itself, the system can automatically complete the variable operation of the vehicle, thereby ensuring driving safety.
06. Automatic emergency braking function
The automatic emergency braking function is an advanced technology that uses ultrasonic radar to ensure driving safety. This function will periodically obtain the driving speed of the vehicle, and combine the preset speed threshold and the information feedback of the ultrasonic radar to determine the distance between the vehicle and the obstacle or pedestrian in front. When the system detects a potentially dangerous distance, it will actively alert the driver. If the driver does not respond in time, the system will automatically activate the braking system to ensure a safe distance between the vehicle and the obstacle, thereby avoiding or reducing the occurrence of traffic accidents.
07. Full-speed adaptive endurance system
The full-speed adaptive endurance system is realized by using ultrasonic radar and vehicle camera to ensure that the vehicle always maintains a safe distance from the vehicle in front. The system is coordinated with the ABS system and engine control system through the ACC control unit to accelerate or brake appropriately. The precise detection distance capability of the ultrasonic radar not only helps the vehicle realize the reverse parking distance judgment, but also supports the front anti-collision warning function.
08, improve the driving safety
The application of ultrasonic radar in automobiles has significantly improved driving safety. This kind of sensor detects the surrounding obstacles by receiving the reflected ultrasonic waves, thereby eliminating the driver's need for front, rear, left and right visits when parking, reversing and starting the vehicle. This not only helps the driver eliminate blind spots, but also solves the problem of blurred vision. Therefore, the ultrasonic radar provides the driver with a more comprehensive perception of the environment and ensures safety during driving.
09. Measure the obstacles in the front and rear of the car
The main application of ultrasonic radar in automobiles is to measure obstacles in the front and rear of the automobile. This technology uses the reflection principle of ultrasonic waves. When the ultrasonic waves encounter obstacles, they will be reflected back to the radar. According to the time and speed of reflection, the distance between the obstacle and the car can be calculated. This method has high precision and real-time, and is very effective for collision avoidance and driving assistance.
10. Accurate Ranging
The application of ultrasonic radar in automobiles mainly depends on its precise ranging function. This technology uses the reflection principle of ultrasonic waves to accurately calculate the distance between the object and the radar by measuring the time from the launch to the reflection of the ultrasonic wave. In the automotive field, this function is particularly important because it can help the vehicle avoid collisions with obstacles in front or on the side during driving. In addition, ultrasonic radar has high ranging accuracy and is less affected by environmental factors, so it can provide reliable ranging data in a variety of weather and road conditions.
11. Remote remote control parking assist system
Remote control parking assist system is an important application of ultrasonic radar in automobiles. The system uses ultrasonic radar to detect the environment around the vehicle and help the driver avoid collisions with other vehicles or obstacles while parking. When the driver activates the parking function, the ultrasonic radar will send ultrasonic waves in real time and receive the reflected signals to calculate the distance between the vehicle and surrounding objects. These data will be transmitted to the on-board computer system. After processing, the system will give corresponding instructions, such as sound prompts or image displays, to help the driver accurately control the vehicle and realize remote remote parking.
12. Detect the flow and speed of road vehicles
Ultrasonic radar is mainly used to detect the flow and speed of road vehicles in automobiles. Its working principle is to calculate the distance and speed of the vehicle by emitting ultrasonic waves and measuring the time it reflects back. This method has the characteristics of non-contact, high precision and real-time, and can accurately count and measure the speed of vehicles on the road. This not only helps to improve the safety of road traffic, but also provides key data for intelligent transportation systems, such as traffic distribution and speed patterns, so as to optimize traffic flow management.
In short, the application of ultrasonic radar in the automotive field has become more and more extensive, and it plays an important role in improving vehicle safety, driving assistance and autonomous driving. With the continuous advancement of technology and the continuous reduction of costs, ultrasonic radar will play a more important role in the future automotive industry.
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Application of Ultrasonic Radar in Automobile
The application of ultrasonic radar in the automotive field has become more and more extensive, and it plays an important role in vehicle safety,
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