With the development of science and technology and the continuous improvement of people's demand for safety, comfort, energy saving and environmental protection of automobiles, automotive sensors play an increasingly important role in the field of automotive electronics. As a key component of the automotive electronic control system, automotive sensors can sense the working state of the car and convert this information into electrical signals so that the automotive computer can control it in real time. This article will introduce and analyze automotive sensors in detail.
1. Types of automotive sensors.
Automotive sensors can be classified based on the physical quantities they detect, such as temperature, pressure, flow, position, and velocity. Common automotive sensors include:
1.Temperature sensor: used to detect engine temperature, cooling water temperature and interior temperature, etc., common temperature sensors include thermistor type and thermocouple type.
2.Pressure sensor: used to detect gas cylinder pressure, cylinder pressure and tire pressure, etc., common pressure sensors are capacitive and piezoresistive.
3.Flow sensor: used to detect air flow, fuel flow and oil flow, etc., the common flow sensors are Carmen vortex type and ** type.
4.Position sensor: used to detect throttle opening, crankshaft position and camshaft position, etc., the common ones are Hall type and photoelectric position sensor.
5.Speed sensor: used to detect vehicle speed and rotational speed, etc., common speed sensors are magnetoelectric and photoelectric.
Second, the application of automotive sensors.
Automotive sensors are used in a wide range of applications, including automotive engine control, chassis control, body control, and navigation systems. For example, temperature sensors, pressure sensors, flow sensors and position sensors are needed in engine control to monitor and control the working status of the engine in real time. Wheel speed sensors, longitudinal and lateral acceleration sensors, etc., are required in chassis control to monitor and control the driving status of the vehicle in real time. Temperature sensors, light sensors, and raindrop sensors are required in body control to automatically adjust and control the temperature and light in the vehicle. Sensors such as GPS receivers and gyroscopes are used in navigation systems to precisely control the vehicle's positioning and navigation.
3. Technological development of automotive sensors.
With the development of intelligence and networking, the technology of automotive sensors is also constantly improving. The future development trend of automotive sensor technology includes:
1.Intelligent: Tomorrow's automotive sensors will be more intelligent, adaptively sensing changes in the surrounding environment and automatically adjusting their operating status.
2.Networking: In the future, automotive sensors will be more networked, enabling information sharing and collaboration between sensors, thereby improving the intelligence and safety of vehicles.
3.High precision: In the future, automotive sensors will be more accurate, and can more accurately detect the working status of the vehicle and changes in the surrounding environment, thereby improving the control accuracy and safety of the vehicle.
4.Miniaturization: Automotive sensors of the future will be more miniaturized and can be mounted more compactly inside the vehicle, reducing the size and mass of the vehicle.
5.Integration: Tomorrow's automotive sensors will be more integrated, with the ability to integrate multiple sensors together, reducing vehicle complexity and cost.
To sum up, automotive sensors play a vital role in the field of automotive electronics, and the future development trend is intelligence, networking, high precision, miniaturization and integration. With the continuous advancement of technology and the continuous expansion of application scenarios, the functions of automotive sensors will become more and more powerful, bringing people a safer, more comfortable, energy-saving and environmentally friendly driving experience.