Deko Strong NdFeB magnets are devices that convert changes in the magnetic function of active components caused by magnetic fields, currents, stress and strain, temperature, light, etc., into electrical signals, and use this method to view the corresponding physical quantities. It is characterized by non-contact measurement, the viewing signal is hardly affected by the measured object, pollution resistance, strong noise, reliable operation even under very harsh environmental conditions, sturdy and durable, and long life. Because of this, such sensors are used in many aspects from defense, aerospace to the national economy, from medical and health care to the daily life of human beings.
Strong NdFeB magnets are usually assembled inside machines and equipment for use. The modern whole machine is rapidly developing in the direction of small, simple, multi-functional and intelligent, and it is required that the sensors used can respond to the changes of physical quantities in small spaces with high flexibility and high speed. That is, while the sensor itself needs to be small and lightweight, it is also eager to improve its working speed, viewing resolution and flexibility.
Semiconductor large-scale integrated circuit manufacturing technology, micro-electromechanical system (MEMS) manufacturing technology, implementation and application of micro-assembly technology, new materials such as magnetic thin film, amorphous, multilayer film, nano-magnetic wire and other new materials. Flat coil micromagnetic device manufacturing technology and The continuous advancement of characterization methods has laid a reliable foundation for the miniaturization and miniaturization of NdFeB strong magnets. Many new high-performance, miniaturized and miniaturized NdFeB strong magnets using various new effects are constantly being put into the market. . The AMR thin-film active elements and sensors that were launched in the early stage, as well as the upcoming practical thin-film fluxgate magnetometers and wireless magneto-elastic micro-sensor arrays, are typical representatives of them. Below, the working principle, basic structure and main technical functions of several miniature NdFeB magnets are briefly introduced. Fuqiang Magnetic Technology
The development and application of new Strong NdFeB magnets have created innumerable economic, technical and social benefits, accelerated the completion of industrial automation, processing intensification, office automation and the modernization of family life, and accelerated the transition from an industrialized society to an information society. footsteps. They will play an increasingly important role in the transformation of traditional industries, resource exploration and comprehensive utilization, environmental protection, bioengineering, and intelligent traffic control.
According to the forecast of market research institute iSuppli, the magnetic field sensor chip market will feel strong demand from the fields of automotive, industrial and consumer applications in 2010. The market revenue is expected to reach $1.4 billion in 2013 from $821 million in 2009; in terms of shipments, it will reach more than 5 billion in 2013 from 2.8 billion in 2009.
