Magnetic sensor development

The rapid development of magnetic sensors in the past two years has captured the eye of the industry, and it is not difficult to find that the number of magnetic sensor manufacturers in the international and domestic markets is increasing rapidly. In fact, in the field of sensors, not only new MEMS sensors, but also the traditional magnetic sensor market is rapidly developing. According to iSuppli's prediction, the magnetic sensor chip market will experience strong demand from automotive, industrial and consumer applications in 2010. This market revenue is estimated to increase from 821 million U.S. dollars in 2009 to 1.4 billion U.S. dollars in 2013. From shipments, the figure will increase from 2.8 billion in 2009 to more than 5 billion in 2013.

The automotive market has grown significantly

Magnetic sensors are mainly manufactured by using the principles of magnetoelectricity, magnetoresistance, magneto-optical, and thermomagnetic effects of some materials. In addition to Hall devices, semiconductor magnetoresistive resistors, magneto-sensitive diodes, and so on, there are fluxgates, proton precession magnetometers, superconducting quantum interferometers, and many others.

Magnetic sensors are an important part of sensor products and have been widely used in aerospace, automotive, industrial, consumer and many other fields. According to Shi Yunbo, the automotive sector occupies more than 70% of the magnetic sensor application market. It is mainly used in automotive applications such as speed, inclination, angle, distance, proximity, position and other parameters detection and navigation, positioning, etc., such as vehicle speed measurement, pedal position, gearbox position, motor rotation, assist torque measurement, crankshaft Position, inclination measurement, electronic navigation, anti-lock detection, parking positioning, etc.

It is understood that the average number of magnetic sensors and switches used in a car will only increase from 6.7 in 2008 to 9.4 in 2013.

As we all know, the Chinese auto market has grown against the market in 2009, with production and sales exceeding 10 million units. This undoubtedly has played a significant role in promoting the development of magnetic sensors. Relevant sources revealed that Hall sensors did indeed grow rapidly in the automotive market in 2009. They are also very optimistic about the development of Hall current sensors in the automotive market in 2010.

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