The magnetic sensor market consists of a Hall effect and a magnetoresistive semiconductor IC used to track angular and linear angles in machines and products, or to detect and process magnetic fields to establish positional relationships. In industrial and medical applications, magnetic sensors are used in motors to improve their energy efficiency. Sensors are also used in a range of medical devices that involve some form of motor control, comparing pumps.
Of the operating revenue in 2011, 70% came from industrial applications and medical applications accounted for the remaining 30%.
First, the industrial use of magnetic sensors is widely used in industrial applications, solar energy devices and wind turbines and other renewable energy systems has been the main growth point of magnetic sensors. On the other hand, all kinds of motors consume an estimated 45% of the electricity. If they can improve the efficiency of motors, they may save a lot of energy. Government legislation is aimed at reducing energy consumption and is also good for sensors.
Examples of motors using magnetic sensors include low-voltage AC and DC motors, three-phase induction motors, stepper motors and servomotors, single-phase motors, and compact motor drivers.
In other industrial applications, magnetic sensors can be used in uninterruptible power supplies (UPS), welding systems, robotics, train transportation infrastructure, off-road vehicles, and forklifts such as computer servers.
In industrial applications, the most popular types of magnetic sensors are current sensors, including shunt resistors, Hall-effect integrated circuits, current-sensing transformers, open-loop and closed-loop Hall devices, and fluxgate sensors. In many applications that measure currents below 50 amps, such as residential solar inverter applications or small UPS systems, use a simple resistive bar or shunt.
But as the measured current intensity increases, shunt becomes bulky and expensive. In high-current applications such as large variable-frequency motors, open-loop and closed-loop Hall sensors use Hall-effect ICs in a small package; they also increase integration and include an application-specific integrated circuit in the package. Hall ICs are also used in inverter control applications in industrial washing machines.
In addition to current sensors, separate Hall-effect ICs or magnetoresistive sensor switches also have a smaller magnetic sensor market, which is used for motor rectification to reduce ripple and improve performance, or for position measurement.
Second, magnetic sensors play a key role in medical applications Magnetic sensors in the medical field, although the scale is smaller than the industrial sector, but it can save lives or improve the quality of life. Mainly used in medical devices that use reversing sensors for motor control applications such as ventilator applications; infusions, insulin, and syringe pumps; or kidney dialysis machines.
Another example of the application of sensors in the medical field is a simple centrifuge for preparing samples. Sensors are used to help control small motors, making them quieter and more reliable.
The switch is also a prominent application and is used in safe operation of medicine cabinets, or bed adjustments and hearing aids. In the field of hearing aids, giant magnetoresistive sensor ICs (GMRs) compete with Hall and reed switches.
Third, the main semiconductor suppliers of major manufacturers Hall Effect IC include Japan's Asahi Kasei Microsystems of Japan, the United States Allegro MicroSystems (belonging to Sanken), Belgium Melexis NV, Switzerland Micronas and LEM. These vendors typically provide plastic packaged stand-alone ICs for commutation and position switches, as well as current sensing.
Hall-effect elements with amplifiers or Hall ICs are also part of open- or closed-loop current sensors. Manufacturers of these sensors include LEM, ABB Sweden, Telco UK, and Tamura and Kohshin Japan. In this supplier camp, Germany Vacuumschmeize is a non-Hall current sensing main supplier, which uses magnetic induction.
Of the operating revenue in 2011, 70% came from industrial applications and medical applications accounted for the remaining 30%.
First, the industrial use of magnetic sensors is widely used in industrial applications, solar energy devices and wind turbines and other renewable energy systems has been the main growth point of magnetic sensors. On the other hand, all kinds of motors consume an estimated 45% of the electricity. If they can improve the efficiency of motors, they may save a lot of energy. Government legislation is aimed at reducing energy consumption and is also good for sensors.
Examples of motors using magnetic sensors include low-voltage AC and DC motors, three-phase induction motors, stepper motors and servomotors, single-phase motors, and compact motor drivers.
In other industrial applications, magnetic sensors can be used in uninterruptible power supplies (UPS), welding systems, robotics, train transportation infrastructure, off-road vehicles, and forklifts such as computer servers.
In industrial applications, the most popular types of magnetic sensors are current sensors, including shunt resistors, Hall-effect integrated circuits, current-sensing transformers, open-loop and closed-loop Hall devices, and fluxgate sensors. In many applications that measure currents below 50 amps, such as residential solar inverter applications or small UPS systems, use a simple resistive bar or shunt.
But as the measured current intensity increases, shunt becomes bulky and expensive. In high-current applications such as large variable-frequency motors, open-loop and closed-loop Hall sensors use Hall-effect ICs in a small package; they also increase integration and include an application-specific integrated circuit in the package. Hall ICs are also used in inverter control applications in industrial washing machines.
In addition to current sensors, separate Hall-effect ICs or magnetoresistive sensor switches also have a smaller magnetic sensor market, which is used for motor rectification to reduce ripple and improve performance, or for position measurement.
Second, magnetic sensors play a key role in medical applications Magnetic sensors in the medical field, although the scale is smaller than the industrial sector, but it can save lives or improve the quality of life. Mainly used in medical devices that use reversing sensors for motor control applications such as ventilator applications; infusions, insulin, and syringe pumps; or kidney dialysis machines.
Another example of the application of sensors in the medical field is a simple centrifuge for preparing samples. Sensors are used to help control small motors, making them quieter and more reliable.
The switch is also a prominent application and is used in safe operation of medicine cabinets, or bed adjustments and hearing aids. In the field of hearing aids, giant magnetoresistive sensor ICs (GMRs) compete with Hall and reed switches.
Third, the main semiconductor suppliers of major manufacturers Hall Effect IC include Japan's Asahi Kasei Microsystems of Japan, the United States Allegro MicroSystems (belonging to Sanken), Belgium Melexis NV, Switzerland Micronas and LEM. These vendors typically provide plastic packaged stand-alone ICs for commutation and position switches, as well as current sensing.
Hall-effect elements with amplifiers or Hall ICs are also part of open- or closed-loop current sensors. Manufacturers of these sensors include LEM, ABB Sweden, Telco UK, and Tamura and Kohshin Japan. In this supplier camp, Germany Vacuumschmeize is a non-Hall current sensing main supplier, which uses magnetic induction.
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