Application analysis of ultrasonic sensors in the automotive industry
ntelligent Manufacturing Network News Right now, many foreign automakers and technology companies are testing autonomous vehicles with fully autonomous driving functions. Nissan and General Motors even stated that by 2020, they will test-run autonomous vehicles on the road. Both autonomous vehicles and human-driven vehicles that incorporate driver assistance technology will use sensors extensively to monitor the road and surroundings. surroundings. For example, ultrasonic sensors can detect cars in adjacent lanes to perform "blind spot detection" and remind the driver to avoid it when someone is in the blind spot.
Today, ultrasonic sensors are indispensable components in reversing and parking radar systems. In the process of reversing assistance, the ultrasonic sensor usually needs to be used in combination with the controller and the display, so as to inform the driver of the obstacles around the driver by sound or a more intuitive display.
In doing so, it can relieve the driver's troubles caused by the front, rear, left, and right audiovisual limitations when parking, reversing and starting the vehicle, helping the driver to clear the blind corners of the field of view, and improving driving safety. Ultrasonic sensors are sometimes used in combination with microwave, millimeter-wave radar and cameras to provide different but complementary views of the surrounding environment in automotive and industrial applications. As vehicles have higher and higher requirements for safety, comfort and operational performance. Therefore, the requirements for automotive ultrasonic sensors are also constantly increasing, mainly from three aspects: accuracy, reliability, and protection level.
From the perspective of market share, the application of ultrasonic position sensors in the automotive market segment is dominant. The ultrasonic obstacle detection system adopted by the vehicle needs to be equipped with an angle sensor. The safety level in the automotive field depends to a large extent on the types of sensors installed and the level of safety it can provide. At the same time, the ultrasonic angular position system can ensure the accuracy, safety, and convenience of parking, and can detect targets near the vehicle to avoid vehicle damage or collision accidents.
Generally speaking, ultrasonic distance sensors can be widely used in material level (liquid level) monitoring, robot collision avoidance, various ultrasonic proximity switches and other related fields. They are reliable in work, easy to install, high in sensitivity, small in launch angle, convenient and industrial Display instrument connection, and also provide a probe with a larger launch angle.
Of course, in addition to the automotive field, ultrasonic sensors can also be used to detect liquid level, detect transparent objects and materials, control tension and measure distance, mainly for bottle making, packaging, material handling, coal inspection equipment, plastic processing, and the automotive industry. . The application value of ultrasonic sensors in detecting defects and process monitoring to improve product quality has been recognized by some people in the industry.
Taken together, the ultrasonic sensor has the characteristics of relatively low cost, small size, low power consumption, easy installation and maintenance, can achieve non-contact measurement, and is not easily affected by interference factors such as electromagnetic, light, smoke, and the color of the measured object. Work in dark, smoke, dust, electromagnetic interference and other environments. Based on various advantages, the future application scenarios of ultrasonic sensors may be more diverse.
Looking at the world, in the field of automotive ultrasonic radar, the gap between domestic and foreign manufacturers is not big. In terms of meeting functions such as reversing assistance, the Chinese manufacturer’s ultrasonic radar is sufficient and the competition on the track is fierce. Looking at the future sensor market, high-performance, intelligent, integrated, and multifunctional will become the mainstream development trend. From the perspective of application areas, four parts: industry, automotive electronics, communications electronics, and consumer electronics are the main markets for sensors. The automotive electronics and communications electronics application market is expected to become a rapidly developing market.
In addition, the impact of autonomous vehicles on existing sensor manufacturers and technologies is huge. Some high-end sensor markets will have more players joining in the future, and lidar or smart sensor modules will also play a more important role in vehicle driving status monitoring and vehicle driving environment sensing.
Cater to the trend and face the challenge, the trillion-dollar scale of big data is just around the corner!