High frequency and high precision ultrasound physiotherapy generator

Abstract

The invention discloses a high frequency and high precision ultrasound physiotherapy generator. The generator comprises a single chip microcomputer module, a DDS signal generating module, a power amplifying module, an impedance matching module, a signal acquisition and control module and a circuit protection module. The DDS signal generating module, power amplification impedance matching module, and an ultrasonic transducer are connected sequentially; the ultrasonic transducer is connected with the signal acquisition and control module; the single chip microcomputer module is connected with the DDS signal generating module, the circuit protection module and the signal acquisition and control module respectively. According to the high frequency and high precision ultrasound therapy generator, the design of the circuit structure is exquisite and reasonable; according to the characteristics of the human physiotherapy, the high frequency ultrasonic vibration signals are adopted so that some pain positions of the human body can be recovered quickly; according to the safety of the human physiotherapy and other requirements, the drive circuit architecture generated by more than 1MHz high frequency signals is constructed reasonably, which can meet the work needs of different working conditions in the human physiotherapy dynamic process, the flexibility is high and scope of application is wide.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic generators, in particular to a high-frequency and high-precision ultrasonic physiotherapy generator applied to human physiotherapy. Background technique [0002] Ultrasonic physiotherapy is the process of using relatively low-intensity ultrasonic emission and focused beams to heat and stimulate human diseased parts to achieve the treatment of certain human diseases. Thermal effect, mechanical effect, thixotropic effect and diffusion effect are the main ultrasonic effects used in the field of ultrasonic physiotherapy. Because ultrasound has a strong penetrating ability, using its thermal effect and physiotherapy effect, it can effectively promote the absorption of blood congestion, especially for old injuries, so ultrasound physiotherapy is often used to assist post-operative treatment. Rehabilitation treatments such as arthritis, overuse tendon injuries, cervical spine pain, muscle strains, an...

AI Technical Summary

Problems solved by technology

At present, although a certain frequency signal output can be achieved in the industry, the driving voltage and current waveforms are distorted and the power loss is large.

Due to the unreasonable matching between the circuit system and the probe, the load vibration of the transducer is not enough, and it is easy to generate heat

In terms of control, especially the lack of feedback circuit, the automatic frequency tracking control of the transducer probe cannot be realized, so that the probe cannot work at the optimal frequency point

In addition, the safety protection circuit of the ultrasonic driving circuit currently used for human physiotherapy is not perfect, and there are many safety hazards in the working process

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