Research On Control System Of Medical Field With High Efficiency And Energy Saving

In order to study the effective application of dynamic magnetic field in the medical field as well as biological medicine, and improve the utilization of energy. A high energy saving magnetic field generation control system is developed based on single-phase inverter technology and second order circuit zero-input response technology for medical treatment.This paper present a single module energy saving magnetic field generator with the combination of single phase inverter and the second order circuit zero input response technology, which has the energy saving effect and improves the power utilization ratio. Different from other magnetic field generator, the energy saving magnetic field includes a part of energy saving control, which is constructed by H-bridge circuit.This magnetic field generator could produce energy saving alternating magnetic field. (1) Through theoretical derivation and single-phase inverter circuit constructed by the MOSFET produces an alternating current with wide range of adjustable amplitude and frequency. And alternating current drives the coil to generate alternating magnetic field. (2) The energy released by coil after power off is saved and reused by using energy saving circuit through RLC damped oscillation process. This magnetic field generator could produce energy saving bipolar pulse magnetic field. (1) Through the switch timing controlling of system circuit, the coil and the storage capacitor forming RLC circuit, and pulse current is produced by the RLC oscillation damping process. Pulse current drives the coil to generate pulse magnetic field. (2) In the RLC damped oscillation process, when reusing the power of capacitor reverse charged, the circuit generates bipolar pulsed current. Experimental results show that the energy saving rate is 73.75% and energy re-using rate is 42.3% in alternating magnetic field generator, and the energy recycling rate is 14.15% in bipolar pulse magnetic field generator. Therefore this magnetic field generator can produce alternating current and bipolar pulse current with amplitude and frequency sensitive adjustable, and achieve energy conservation and re-use.This paper presents multi-module parallel magnetic field generator, and make multi-module parallel network architecture circuit through single module circuit topology, after the completion of the single module energy saving magnetic field generator experimental verification. When the multi-modules are connected in parallel, the modules can be connected to each other by a controllable switch, which not only can produce energy saving alternating magnetic field and energy saving bipolar pulse magnetic field independently from each other, but also can work together to produce time-varying and energy saving pulse magnetic field with amplitude, pulse wide and frequency sensitive adjustable, by changing the number of capacitors in parallel. After the completion of the multi-module parallel circuit design, in order to verify the time-varying and energy saving pulse current characteristics produced of multi-module parallel circuit, the experiment is carried out. Experimental results show that the multi-module parallel magnetic field generator proposed in this paper can produce time-varying and energy saving pulse magnetic field.