Design of Intelligence Low-Frequency Pulsed Magnetic-Field Therapeutic Instrument

In this study, the control system of low-frequency pulsed magnetic-field therapeutic instrument is discussed, and the principles and hardware design schemes of its modules such as control circuit, keyboard circuit, display circuit, magnetic-field generated circuit, test circuit and power supply circuit are elaborated in detail. The single-chip microcomputer LPC2214 made by Philips is chosen as a core control chip of the instrument, which can control the frequency of pulsed magnetic field. Different frequency of pulsed magnetic field generates different intensity of magnetic field, based on which some diseases can be treated according to the interactions between the magnetic field and tissues of organ[1][2]. Advisable intensities for specific parameters can be selected in treating patients with different diseases. The instrument introduced in the study includes a bed as well as a coil generating magnetic fields, controls and a power supply circuit installed on the bed. Clinical experiments show that the therapeutic effect of the instrument is excellent.