利用51单片机作为主处理器，利用18b20测环境温度，利用1602液晶屏显示环境温度，并通过按键设置预警值，超过预警值流水灯和蜂鸣器报警。-Using 51 single-chip microcomputer as the main processor, the use of 18B20 measuring ambient temperature, the use of 1602 LCD screen display environment temperature, and by setting the alarm value of the button, more than the warning value of water lights and buzzer alarm.