Low-frequency wave signal generation method and system and electrical stimulation equipment

Abstract

The invention provides a low-frequency wave signal generation method, a low-frequency wave signal generation system and electrical stimulation equipment. The low-frequency wave signal generation method comprises the following steps: carrying out linear superposition on two beams of high-frequency wave signals to generate a low-frequency signal; wherein the two beams of high-frequency signals meet the following conditions: the waveform of the high-frequency signals is located at the middle point of the period when the positive energy equivalent concentration action time point and the negative energy equivalent concentration action time point in the period of any starting point are not at the same time; the two beams of high-frequency signals have a frequency difference, and when the frequency difference tends to zero, the waveforms of the two beams of high-frequency signals are mutually inverted. According to the low-frequency wave signal generation method and system and the electrical stimulation equipment provided by the invention, the frequency difference exists, and the waveforms are mutually inverted when the frequency difference tends to zero; and the waveform characteristics meet the condition that the two beams of high-frequency wave signals which cannot enable the positive energy equivalent concentration action time point and the negative energy equivalent concentration action time point in the periodic waveform to be simultaneously located at the midpoint of the current period are subjected to linear superposition, so that a real low-frequency wave signal is obtained.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a low-frequency wave signal generation method, system and electrical stimulation equipment. Background technique [0002] Usually, there will be interference between currents of different frequencies. When two sinusoidal alternating currents of different frequencies meet, the two will interfere with each other, and the high-frequency signals will be superimposed on each other to obtain a low-frequency beat frequency whose frequency is the difference between the two frequencies. , For example, there are two groups of high-frequency alternating currents with frequencies of 2000Hz and 2010Hz. When the two meet, a low-frequency beat frequency of 10Hz will be formed in the intersection area (the so-called low-frequency alternating current). [0003] In the medical field, using electric current to stimulate human neurons is a medical method. Neurons have the characteristics ...

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Problems solved by technology

[0004] In summary, the so-called low-frequency signal (low-frequency beat frequency) formed in the exis

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