基于单片机的温度测控系统设计

Software design. The hardware circuit mainly includes the main controller, temperature measurement circuit, data transmission circuit, communication circuit, and display circuit. The main controller adopts a single-chip microcomputer STC89C52, the temperature sensor adopts DS18B20 produced by the American company DALLAS Semiconductor, the data transmission part uses the NRF2401 chip, and the display circuit uses LCD1602 and PC display. The system program mainly includes the main program, temperature acquisition program, data transmission program, upper computer communication program, data display program, etc. In addition, the system's debugging and performance analysis are also introduced. Due to the use of improved intelligent temperature sensor DS18B20 as the detection element, compared with traditional temperature acquisition, this temperature acquisition part reduces external hardware circuits and has the characteristics of low cost and easy use. DS18B20 temperature sensor can also be applied to high-temperature alarm, remote multi-point temperature measurement and control, and has good development prospects. Keywords: temperature sensor; DS18B20; STC89C52; NRF2401; LCD1602. Based on MCU, the temperature measurement and control system design