The development of modern automotive sensor technology value of up to 2 billion

Automotive sensor as automotive electronic control system and the information source is a key component of the automotive electronic control system, and it is also one of the core content of automotive electronic technology research field. The future development trend of automotive sensor technology is miniaturization, multifunction and intelligence.

Sensor is a signal conversion device, its function is to detect the car (and engine) under different conditions of consumption, physical and chemical parameters, and these parameters will be converted into electrical signal input control unit ECU can be identified by computer. With the development of electronic technology and the automotive electronic control system used widely, the market demand of automotive sensors will maintain rapid growth, sensor miniaturization, multi-functional, integrated and intelligent will gradually replace the traditional sensor, become the mainstream of automotive sensor. As an important information source of the automobile electronic control system, the automobile sensor is used to measure and control the temperature, pressure, position, speed, acceleration and vibration. The key to measure the modern car control system lies in the number and level of the sensor. Sensor and converter. Put it to electrical variable, by amplifying and shaping into processed signals can accept the computer automatic control system, with analog, digital or switch quantity output in the form of a variety of automatic control system as a car or an essential driver information system information. A sensor is a device that detects the physical quantities of a variety of States, and transforms the physical quantities into electrical quantities and outputs them. The sensor is just like the human sensory organ, which can detect the physical quantity of the vehicle under the condition of all kinds of conditions. In the control of the car, as the necessary physical quantities are: temperature, pressure, displacement, angular velocity, speed, acceleration, flow, etc.. From the point of view of the use of the sensor, it must be able to maintain the performance of a long time in the harsh conditions such as temperature, vibration, shock, pollution, flooding, grease, noise and so on. Multi function refers to a sensor can detect two or more than two characteristic parameters or chemical parameters, thereby reducing the number of automotive sensors, improve the reliability of the system.

Intelligent sensor is a sensor with micro computer with detection, judgment, information processing and other functions. Compared with traditional sensors, he has many features. For example, he can determine the working state of the sensor, measurement data is modified, in order to reduce the error caused by environmental factors such as temperature; to solve the difficult problems in software and hardware; complete data calculation and processing etc.. All the countries in the world with a car based sensor hardware, try using software to solve automotive electrical interference, poor environment (high temperature, temperature gradient and severe pollution etc.) and other problems caused by the influence of parameter measurement for automobile. Moreover, the intelligent sensor has the advantages of high precision, large measuring range, large output signal, high signal to noise ratio and good anti-jamming performance. Many large automobile companies in this area of research and development, and success and application.

Our existing car 20 million, and an annual increase rate of more than 5%, but the EFI car also accounted for only about 10%, the provisions of the state to stop the carburetor car production, new cars require all installed EFI system. Shanghai United Automotive Electronics is now an annual output of 1 million 200 thousand sets of EFI system sensor, about 4000 ~ 6000 yuan / sets, which accounted for more than 60% of the automotive sensor output value. Domestic EFI system sensor system accounted for more than 70% ABS, the cost of the sensor is about 50 yuan, domestic production of 1 million units, the output value of 50 million yuan; airbag sensor system accounted for more than 70% of the cost, the price of the airbag sensor is about 2000 yuan, demand is 1 million units / year, the output value of the sensor up to 2 billion yuan.

2 Modern Automotive sensing technology hc360.com home electronics industry information > > > > > the main information of Taiwan electronic devices development business output up to 2 billion hc360.com 10:24 on February 15, 2006 source: Chinese Automotive Network

In 1960s, only the oil pressure sensor, oil quantity sensor and water temperature sensor of automobile, and the instrument or indicator lamp connection. Enter after 70s, in order to control emissions, and increased the number of sensors to help power system control of the car, the air-fuel ratio to control emissions for catalytic converter, the emergence of electronic ignition and fuel injection device need to maintain these sensors. In 80s, anti lock brakes and airbags improved vehicle safety. Since 1980s, the domestic automobile instrument industry to introduce foreign advanced technology and supporting the production of sensor technology, basically meet the domestic small batch, low level vehicle matching needs. The new electronic product of many cars, light trucks and truck parts, automotive sensors need large quantities and high level, but the existing domestic sensor product the highest level than the same products abroad 10 years behind, to import more than 500 thousand sets of high-performance car sensors each year. Many sensor manufacturers in order to enhance the competitiveness of the product, with the same industry abroad by way of joint venture, digestion and absorption of foreign advanced sensor technology, product upgrading, and gradually grow, some have become a few big manufacturers in the lower reaches of EFI system for