Variable-frequency domestic appliance control method, variable-frequency domestic appliance and computer readable storage medium

Abstract

The invention provides a variable-frequency domestic appliance control method, a variable-frequency domestic appliance and a computer readable storage medium. The variable-frequency domestic appliancecontrol method comprises the steps that pulse width modulation signals are received, and the frequency of each pulse width modulation signal is recorded; whether the frequency variation difference value of the multiple pulse width modulation signals within the current cycle exceeds the preset error range or not is judged, and if yes, the error occurring time starts to be recorded; the frequenciesof pulse width modulation signals in the follow-up cycle are recorded, if the frequency variation difference value of the pulse width modulation signals in the follow-up cycle still exceeds the preset error range, the error occurring time is accumulated, and when the accumulated error occurring time value exceeds the error occurring time threshold value, operating of a signal driver part is stopped. The invention further provides the variable-frequency domestic appliance and the computer readable storage medium for achieving the variable-frequency domestic appliance control method. The situation that the variable-frequency domestic appliance is started and stopped repeatedly can be avoided, and the service life of the variable-frequency domestic appliance is prolonged.

Description

technical field [0001] The present invention relates to the control field of household appliances, in particular, to a control method of frequency-variable household appliances, a frequency-variable household appliance applying the method, and a computer-readable storage medium. Background technique [0002] Due to the advantages of energy saving and environmental protection, frequency conversion household appliances are gradually favored by users. Taking the frequency conversion refrigerator as an example, its control system includes a main control part and a compressor driving part. The drive part sends various control signals. Therefore, the main control part is mainly responsible for the logic control of the frequency conversion refrigerator controller, including the detection of each room and ambient temperature, the detection of proximity switch signals, the drive of dampers, the drive of stepper motors, the control of heaters, the control of LED Lighting control, etc....

AI Technical Summary

Problems solved by technology

However, since the PWM signal is unidirectionally transmitted from the main control part to the drive part, in some special cases, such as when the circuit of the main control part is faulty or the controller of the main control part is seriously disturbed by the power grid, the output signal to the drive part The PWM signal will be distorted. At this time, the waveform of the PWM signal is as follows: image 3 or Figure 4 As shown, a large number of interference signals appear in the PWM signal at this time, resulting in an abnormally high frequency of the PWM signal

If the driving part still drives the compressor to work according to the preset rules, it will cause abnormal operation of the compressor. Once the frequency of the PWM signal is abnormal, it may cause the compressor to stop working, which will cause the compressor to repeatedly start and stop, The speed fluctuation is too large and other problems, which will cause the refrigerator refrigeration system to work abnormally, and even affect the life of the compressor

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