该系统基本工作原理为：由温度传感器来采集箱内温度，然后通过单片机内部的A/D转换器将模拟信号转换为数字信号，通过控制规则，单片机作出相应的处理，最终将结果显示出来，使系统的温度控制在要求的范围内。-The system basic working principle is: the temperature sensor to collect inside temperature, and then through the MCU internal A/D converter converts the analog signal into digital signal through the control rules, corresponding MCU processing, the final results to be displayed, The temperature control of the system the required range.