Temperature control method and temperature control system

Abstract

The invention provides a temperature control method and a temperature control system to solve the problem that the temperature control circuit is of large volume in the prior art. The method comprises the following steps: collecting the current temperature of a controlled object; if the current temperature is higher than a preset temperature, outputting a first PWM control signal to cool the controlled object; judging whether the temperature of the controlled object can reach the preset temperature; if the temperature of the controlled object can reach the preset temperature, cooling the controlled object constantly; if the temperature of the controlled object cannot reach the preset temperature, enabling the duty ratio of the first PWM control signal to be 100%, and controlling the output voltage of a DC voltage regulator module to cool the controlled object; if the current temperature is lower than the preset temperature, outputting a second PWM control signal to cool the controlled object; judging whether the temperature of the controlled object can reach the preset temperature; if the temperature of the controlled object can reach the preset temperature, cooling the controlled object constantly; and if the temperature of the controlled object cannot reach the preset temperature, enabling the duty ratio of the second PWM control signal to be 100%, and controlling the output voltage of the DC voltage regulator module. The scheme ensures that a heating / cooling device works with high efficiency.

Description

technical field [0001] The invention relates to the field of temperature control of lasers, in particular to a temperature control method and system. Background technique [0002] In the field of laser technology, in order to obtain a laser with a wavelength or a specific output mode, it is usually necessary to use a light source to pump the laser working substance, and through the optical path composed of specific optical devices, the optical transformation of the optical path is performed to achieve the ideal laser output. . Among them, the wavelength of the light source, the laser wavelength generated by the working substance, and the electro-optical efficiency under the same injected energy are all related to the temperature. Therefore, in order to achieve precise control of the output energy and wavelength of the laser, precise temperature control of the temperature-sensitive devices is required. In addition, in some applications, there are strict requirements on the ...

AI Technical Summary

Problems solved by technology

In the second temperature control system, since the filter circuit is set, the heating or cooling is continuous, the current is continuous, and the efficiency of the heating or cooling device is high. However, the volume and weight of the realized circuit are significantly increased compared with the first circuit. The size of the magnetic components is small, the power switching tube of the voltage conversion has a high operating frequency, the switching loss is large, and the circuit is relatively complicated

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