A device for generating an alternating electric field of low frequency, wherein the device comprises:
- an input control module, a transformer, an output control module and an electric discharge module, an input end of the input control module is configured to be coupled with an external AC power supply, the input control module is coupled with a primary side winding of the transformer, one end of a secondary side winding of the transformer is coupled with the output control module, the output control module is coupled with the electric discharge module, and the other end of the secondary side winding of the transformer is coupled with ground potential;
- the input control module is configured to acquire an alternating signal input from the external AC power supply, generate a first low frequency signal according to the alternating signal and the type of preserved biomass, and output the first low frequency signal to the primary side winding of the transformer;
- the output control module is configured to acquire a second low frequency signal output from the secondary side winding of the transformer, and adjust a current value of the second low frequency signal according to the type of the preserved biomass so as to output the adjusted second low frequency signal to the electric discharge module;
- and
- the electric discharge module is configured to generate the alternating electric field of low frequency according to the received second low frequency signal;
- wherein the input control module comprises a rectification unit and an invert unit, the rectification unit being coupled with the external AC power supply, the rectification unit being further coupled with an input end of the invert unit, and the invert unit being coupled with the primary side winding of the transformer;
- wherein the rectification unit is configured to rectify the alternating signal input from the external AC power supply and then output the alternating signal to the invert unit;
- and
- wherein the invert unit is configured to acquire the alternating signal output from the rectification unit, and output the first low frequency signal to the primary side winding of the transformer, with the first low frequency signal generated according to the alternating signal and the type of the preserved biomass, wherein the first low frequency signal includes a sine wave, a cosine wave, a square wave, a rectangular wave, a trapezoidal wave and/or a sawtooth wave.