Soft Magnetic Materials Coercivity Automatic Test Control Circuit And System Software Design And Realization

Corecivity is one kind of vital static magnetic parameters, it is very important that corecivity measurement to soft magnetic material. At present, coercivity measurement of soft magnetic material is through measure standard samples instead of practical components. However, it is lead to magnetic characters measure disagree between producers and processors.Aim at coercivity measurement of different shape open magnetic circuit electrical pure iron components, this paper research and design a set of coercivity automatic test and control method. It come to realize a soft magnetic material coercivity automatic test and control system which has measurement range auto judge, system auto zero point correction, auto results storage, offline measurement by remote computer etc.The hardware circuit of automatic test and control system is based on air vibrancy winding measurement and signal measurement circuit, according to signal procedure, design electric functional circuit that monolithic processor (MPU) as controller, including keyboard control and display part, data acquisition part, analog to data convert part, serial communication etc.System software serve to every hardware parts, program modules through operating hardware parts, achieve automatic control of measure process, human interface, automatically acquire data, data processing, results storage, serial communication and perform all of calculate tasks..After several months hard work, trail-produce automatic test and control circuit. Through the circuit operating, it shows the circuit design satisfied basic design requirement generally.