"基于RS-485通信的8路温度检测仪软件设计与验证"

该毕业设计论文主要介绍了一种具有 RS-485 通信功能的 8 路温度检测仪软件设计。随着工业生产和自动控制的发展，对温度的检测和控制需求日益增长。为了满足这一需求，本系统采用了 AT89S52 单片机作为主控，实现了对 8 路温度的检测和 RS-485 通信功能。系统主要包括温度采集、单片机控制、AD 转换、温度显示和 RS-485 通信模块。其中，系统采用热敏电阻 Pt100 温度传感器进行温度检测，通过 AD 转换将采集到的数值转换成温度值，并在液晶屏上显示。此外，系统还实现了温度报警功能，可以设置上下阈值对温度进行监控。论文首先对系统的基本原理及整体结构进行了介绍，然后分硬件和软件两部分对系统进行了详细阐述，重点描述了软件部分的设计。最后，对系统进行了调试和功能验证。 关键词：AT89S52, RS-485， AD 转换, PT100 温度传感器 Abstract： This graduation thesis mainly introduces a software design of an 8-channel temperature detector with RS-485 communication function. With the development of industrial production and automatic control, the demand for temperature detection and control is increasing. In order to meet this demand, this system uses AT89S52 microcontroller as the main control to achieve the detection of 8 channels of temperature and RS-485 communication function. The system mainly includes temperature collection, microcontroller control, AD conversion, temperature display, and RS-485 communication modules. Among them, the system uses a Pt100 thermistor temperature sensor for temperature detection, converts the collected values into temperature values through AD conversion, and displays them on the LCD screen. In addition, the system also has a temperature alarm function, which can monitor the temperature by setting upper and lower thresholds. The thesis first introduces the basic principle and overall structure of the system, then elaborates on the system in hardware and software, and focuses on the design of the software part. Finally, the system is debugged and functionally verified. Keywords: AT89S52, RS-485, AD conversion, PT100 temperature sensor.