The engine management system uses various sensors and is the core of the entire automotive sensor. There are many types, including temperature sensors, pressure sensors, position and speed sensors, flow sensors, gas concentration sensors and knock sensors.
The sensor on the car is used as the information source of the electronic control system of the car, the key component of the electronic control system of the car, and one of the core contents of the research in the field of automotive electronic technology. Automotive sensors perform real-time and accurate measurement and control of various information such as temperature, pressure, position, speed, acceleration, and vibration.
The sensor on the car is used as the information source of the electronic control system of the car, the key component of the electronic control system of the car, and one of the core contents of the research in the field of automotive electronic technology. Automotive sensors perform real-time and accurate measurement and control of various information such as temperature, pressure, position, speed, acceleration, and vibration. The following introduces the core of the sensor on the car, the engine control sensor and several new sensor products.
The engine management system uses various sensors and is the core of the entire automotive sensor. There are many types, including temperature sensors, pressure sensors, position and speed sensors, flow sensors, gas concentration sensors and knock sensors. These sensors convert the engine intake air volume, cooling water temperature, engine speed, acceleration and deceleration and other conditions into electrical signals and send them to the controller. The controller compares these information with the stored information and outputs the control signal after accurate calculation. The engine management system can not only accurately control the fuel supply to replace the traditional carburetor, but also control the ignition advance angle and idle air flow rate, which greatly improves the performance of the engine.
Nowadays, the development of the automobile industry has made more sensors on the car, and the characteristics of the sensors have also made the car more intelligent. For example, the tire pressure monitoring system is a micro-pressure sensor installed in each wheel frame to measure the air pressure and pass The wireless transmitter transmits the information to the front of the driver. When the tire pressure is too low, the system will automatically issue an alarm to remind the driver to deal with it in time. This can not only ensure the safety of the car while driving, but also protect the tread, extend the life of the tire and achieve the purpose of fuel saving. The tire pressure monitoring sensor can accurately measure the tire's air pressure and temperature and transmit this information to a receiver installed in the car through a wireless signal. Nowadays, air pollution in cars poses a new threat to the health of car owners. This threat mainly comes from carbon monoxide. With the rapid increase in the number of car owners, the air quality in the car began to receive attention. The carbon monoxide sensor has the characteristics of high sensitivity, strong anti-interference, and low power consumption, and is specifically used to ensure the safety of the air quality in the car. At the same time, the application is simple, the service life is long, and the air quality in the vehicle can be monitored in time. Carbon monoxide sensors are divided into automatic switching systems for internal and external circulation of air conditioners in cars, and carbon monoxide alarms for cars and passenger cars.
Man and Vehicle Technology Exhibition 2003 exhibited a vehicle anti-theft tilt sensor. The angle sensor uses a 2-axis acceleration sensor, which can promptly detect the vehicle tilt caused by the vehicle being lifted during theft and issue an alarm. This acceleration sensor is electrostatic capacity formula. In April 2003, the British Insurance Association decided to provide preferential insurance to vehicles equipped with anti-theft angle sensors. Similar promotional activities will also be launched in Japan, where the number of stolen vehicles is increasing. It is estimated that the market demand for angle sensors will be increasingly strong. The new thick-film piezoresistive non-contact automotive oil pressure sensor is manufactured using thick-film force-sensing technology and surface micro-assembly technology to monitor the pressure of the engine lubricating oil and realize the low-pressure alarm of the engine oil. It has passed the bench test, type test and 60,000 durability tests, which can directly replace the existing bimetallic sliding wire type YG2221G oil pressure sensor. Compared with the existing slide-line oil pressure sensor, it has the characteristics of high precision, no mechanical component contacts, high reliability, long life, corrosion resistance, matching with digital instruments, low cost, and high cost performance. It is not difficult to see that the application of acceleration sensors on Qi Auto will be the biggest trend in the future automotive industry.
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