"基于单片机的温度监控系统设计与实验研究"

The impact of monitoring systems on people's lives is becoming increasingly significant. In various aspects of life, monitoring technology plays a vital role. This design focuses on temperature monitoring, integrating single-chip microcomputers and interface technology to create a temperature control system designed by a partial edge technology. The system uses the DS18B20 temperature digital sensor to collect temperature data, and the CPU processes the data to display it on a digital tube using the 74LS47. Additionally, the system can set passwords and upper and lower temperature limits through the serial port. When the measured temperature is lower than the set temperature, the heater is used to warm it up, and when the temperature is higher than the set value, an alarm is triggered, and a control signal is sent. This paper mainly explains the design of the temperature acquisition module, display module, and control isolation module. The temperature acquisition module uses the DS18B20 digital sensor, while the display module consists of three eight-segment digital tubes, 74LS47, and ADC0808. The control isolation module is made up of an optoelectronic isolator, bidirectional controllable silicon rectifier bridge, transformer, and other components. Finally, experiments and simulations were conducted on the temperature control system. The analysis of the simulation results demonstrates the rationality and effectiveness of the single-chip microcomputer-based temperature control system described in this paper. Keywords: Single-chip microcomputer, DS18B20 sensor, temperature monitoring system, control isolation circuit.