With the continuous progress of automotive technology, sensors and other electronic products continue to apply to the automotive industry, in the automotive field plays a vital role. The microelectromechanical system (MEMS) sensor market is gradually recovering after a five-year recession in the past, with a large part Sensor of its recovery coming from the new generation of cars and the development of new applications.
MEMS sensors can be reversed in the automotive field, but also thanks to car tires. In August 2000, Bridgestone announced the recall of 6.5 million tires mounted on Ford's SUVs due to the risk of puncture, which prompted the US government to legislate, mandatory since September 2007 Each tire vehicle is equipped with a tire pressure monitoring system (TPMS). In addition, the United States also announced that by 2012 all new cars must use anti-rollover 'electronic stability control technology' to reduce the number of deaths due to vehicle rollovers each year. At this point, how to use MEMS sensors to effectively improve the performance Suction Control Valve of automotive safety systems, has become the world's automotive modules and vehicle manufacturers are most concerned about the topic.
Safety first, this is the eternal topic of the automotive industry. Car safety system is generally divided into active safety system, passive safety system. The so-called active safety, is the role of the accident to avoid the occurrence of the car to determine the probability of occurrence of the accident; passive safety is in the event of an accident when the car car members of the protection or the collision of vehicles or pedestrians, The severity of the injury to the member. In the smart car era, active safety technology has become a high-profile emerging areas, in general, involving vehicle control of the active safety system, including: car tumbling control, car anti-skid stability control, anti-lock system, parking brake, Pressure monitoring, suspension of the vehicle and traffic conditions such as adaptive adjustment system, and MEMS sensors in the active safety system plays Fuel Rail Pressure Sensor a major role. Because of the small size and reliability of these sensors, they can be mounted on the car frame and suspension to monitor the relative position of the car and the ground, allowing the car to adjust the suspension and the sudden turn of the car, poor weather or road Not to provide the greatest degree of stability.
Rollover and stability control can be said to be a new improvement in today's active safety system, the need for MEMS acceleration sensor and angular velocity sensor to sense the body posture. Because such sensors are often installed in the harsh location of the vibration, so the sensor has a high vibration shock resistance, which is a technical sensor MEMS sensor is difficult.
One of the trends in the development of smart car safety systems is the rapid increase in the number of airbags and the loading rate of the stability control system (ESC). One of the characteristics of automotive technology development is the increasing use of electronic control of components. Therefore, the resulting number and scale of electronic systems are expanding, in particular, need more MEMS sensors to sense the different parts of the collision Temperature Sensor and body posture. At the same time, through a variety of sensor integration, reduce system complexity and system cost, but also the development of automotive safety system, another major trend.