"基于RS-485的8路温度检测仪软件设计及应用研究"

The graduation thesis titled "Software Design of 8-channel Temperature Detection Instrument with RS-485 Communication Function" from Xi'an Engineering University introduces a system that utilizes AT89S52 microcontroller as the main control unit for monitoring temperature in 8 different channels. The system is designed to meet the requirements of temperature collection and measurement in industrial production and automatic control processes. It is capable of detecting multiple temperature points, displaying temperature values, and communicating via RS-485. The system comprises modules for temperature collection, microcontroller control, AD conversion, temperature display, and RS-485 communication. The primary temperature sensor used in this system is the Pt100 thermal resistance sensor, which enables accurate temperature detection. The collected data is converted through AD conversion, displayed on an LCD screen, and temperature thresholds are set for temperature alert functions. The thesis first introduces the basic principles and overall structure of the system, followed by detailed explanations of the hardware and software components, with a focus on the software design. The thesis concludes with the system debugging and analysis, where the system's functionality is validated. Keywords include AT89S52, RS-485, AD conversion, and PT100 temperature sensor. This thesis not only presents a practical solution for temperature monitoring in industrial settings but also showcases the capabilities of microcontrollers and communication technologies.