程序主要实现：DS18B20时时采集周围环境温度数据并在数码管上显示，通过按键可设置并显示该环境需要的最低温和最高温。当时时温度高于最高温时，单片机发送信号控制电机，令其转动散热使温度下降直至低于最高温；当时时温度低于最低温时，单片机发送信号控制发热片，令其发热使温度上升直至高于最低温。以此实现基于51单片机的温度控制。-The main procedures: DS18B20 always collected ambient temperature data and digital tube display, can be set through the key and display the minimum temperature, the maximum temperature of the environment needs. The time when the temperature is higher than the highest temperature, the microcontroller sends a signal to control the motor to make it turn the heat until the maximum temperature is lower than the temperature drops　microcontroller sends a signal to control fever tablets, the time when the temperature is lower than the minimum temperature to make it heat the temperature rise until higher than the lowest temperature. In order to achieve 51 microcontroller-based temperature control.