Research And Development Trends Of Automotive Sensors

Due to the important role of sensors in electronic control systems, countries around the world attach great importance to their theoretical research, new material applications, and product development.
Diamond has good heat resistance and high thermal stability. It only begins to carbonize on the surface in vacuum at temperatures above 1200 ℃, and also in the atmosphere at temperatures above 600 ℃. By utilizing this characteristic, a thermal sensor suitable for high temperatures is manufactured, which can monitor and control temperature from room temperature to 600 ℃. It is also suitable for use in harsh environments with high temperatures and corrosive gases, with stable performance and long service life, It can be used for high-temperature measurement in engines. In addition, diamond has a high deformation rate at high temperatures, which can be used to make vibration sensors and acceleration sensors for use in high-temperature environments. Combined with other material vibration membranes, it can be used as a high-temperature, corrosion-resistant, and highly sensitive pressure sensor for vibration detection and engine cylinder pressure measurement.
Optical fiber sensors are receiving widespread attention due to their strong anti-interference, high sensitivity, light weight, small size, and suitability for telemetry. Many mature products have been launched, such as fiber optic torque sensors, temperature, vibration, pressure, flow, and other sensors.
At the same time as developing and utilizing new materials, due to the development of microelectronics and micro mechanical processing technology, sensors are developing towards miniaturization, multifunctional, and intelligent directions. Micro sensors utilize the processing technology of micromachining to integrate and package micron level sensitive components, signal conditioners, and data processing devices on a single chip. Due to its small size, low cost, and ease of integration, the accuracy of system testing can be improved. For example, by integrating micro pressure sensors and micro temperature sensors together, pressure and temperature can be measured simultaneously, and the temperature influence in pressure measurement can be eliminated through on-chip calculations. Many micro sensors have been introduced, such as pressure sensors, acceleration sensors, and silicon acceleration sensors for collision avoidance. Embedding micro pressure sensors in car tires can maintain proper inflation, avoid excessive or insufficient inflation, and thus save 10% of fuel. Multifunctionality enables sensors to simultaneously detect two or more characteristic parameters. And intelligent sensors have intelligent characteristics due to their dedicated computers.