Mechanical and electrical system of the structure and application of magnetic sensor

Magnetic sensor is often used in mechanical and electrical systems and industrial control field sensors. Magnetic sensor is the use of a conductor or semi-conductor magnetoelectricity conversion principle, the magnetic field information into corresponding electrical components. Is currently the most widely used semiconductor magnetic sensor, including the hall element, magnetic resistance elements, magnetic susceptibility diode, magnetic susceptibility transistor and magnetic susceptibility of integrated circuit and so on. In addition, the strong magnetic sensor made of magnetic metal WeiGan magnetic sensor and superconducting Josephson superconducting quantum interference device made of metal, 鱿鱼) And so on, is also extremely important magnetic sensor development in recent years. 1) The appearance of magnetic sensor structure, many different kinds of magnetic sensors, applications also each are not identical, shape structure is more diverse. As shown in figure 1 is part of the magnetic sensor, the shape of the structure. 2) The symbol of magnetic sensor magnetic sensor as a switch when using the symbols of the magnetic switch symbol as shown in figure 2. Figure 2 magnetic switch symbol of 3) Magnetic sensor, the application of magnetic sensor using magnetic field as a medium can detect many physical quantities, such as: displacement, speed, acceleration, vibration, force, flow, current, power, etc. In the magnetic sensors, hall element and the production of hall sensor is the biggest of all. It is mainly used in brushless dc motor ( Hall motor) This motor is used in the tape recorder, video recorder, XY recorder, draft fan in the printer, the record player and instrument etc. In addition, the hall element and hall sensor is also used to measure speed, flow, velocity, and use it to make instruments such as gauss meter, current meter, power meter. Magnetic sensor in the application of vehicle detection example is shown in figure 3.