Temperature balance control method and device

Abstract

The invention provides a temperature balance control method and device, and relates to the technical field of hair removal instruments. The method comprises the steps that the current temperature of a refrigeration module is collected; when the current temperature is higher than a preset temperature threshold value, the refrigeration module is started, so that the refrigeration module reduces the current temperature to the preset temperature threshold value; under the condition that the current temperature rises again, if a load is connected into the refrigeration module and the hair removal instrument is in a lighting state, the state information of the hair removal instrument in the lighting state is extracted, and the load value of the load is determined according to the state information; based on the corresponding relation between the preset load value and the duty ratio of PWM, the duty ratio of the PWM is adjusted according to the load value; and finally, the output power of the refrigeration module is controlled based on the duty ratio of the PWM. According to the method, the exact load value can be obtained through the state information of the hair removal instrument, and then the corresponding duty ratio of the PWM is determined through the load value, so that the output power of the refrigeration module is adjusted, and the refrigeration module is rapidly stabilized at the preset temperature threshold value.

Description

technical field [0001] The invention relates to the technical field of hair removal instruments, in particular to a temperature balance control method and device. Background technique [0002] Hair removal instrument has gradually become a common beauty care tool. Its simple operation and long-lasting hair removal effect have begun to be widely used by people. The working principle of the hair removal device is to emit a certain wavelength of intense pulsed light through the light-emitting tube. The intense pulsed light penetrates the skin surface and reaches the dermis layer to act on the hair follicles. achieve hair removal effect. During the working process of the hair removal device, other parts of the skin will also absorb light energy and generate heat, so the skin will feel burning after using the hair removal device for a period of time. To solve this phenomenon, a cooling module is introduced to rapidly reduce the temperature of the skin. [0003] The current sol...

AI Technical Summary

Problems solved by technology

[0003] At present, the solution to control the cooling output is basically to adjust the output power of the cooling module in real time through the temperature sensor. In this solution, the insensitivity of the temperature sensor leads to a lag in the output adjustment of the cooling module, which in turn leads to the problem of large temperature fluctuations.

That is to say, the temperature balance of the existing refrigeration control scheme is poor, especially when the load changes greatly, it is easy to increase the variation error of the temperature sensor detection temperature, which makes the refrigeration module basically unable to stabilize at the preset temperature threshold

Images