"基于RS-485通信的8路温度检测仪软件设计与验证"

西安工程大学本科毕业设计（论文）具有 RS-485 通信功能的 8 路温度检测仪软件设计 本文介绍了一种具有 RS-485 通信功能的8路温度检测仪软件设计方案。温度作为工业生产和自动控制的重要参数之一，需要进行实时检测和控制。为了满足对多个支路温度的检测和监控要求，本设计采用了AT89S52单片机作为主控，实现了8路温度检测系统。此外，该系统还具备RS-485通信功能，能够实现温度数据的传输与共享。 整个系统主要包含温度采集、单片机控制、AD转换、温度显示和RS-485通信等模块。其中，温度采集模块主要通过使用热敏电阻Pt100温度传感器进行温度检测，并通过AD转换将采集到的模拟信号转换为数字信号。然后，将温度值显示在液晶屏上，用户可以通过液晶屏对温度进行观测和调整。此外，系统还提供了温度报警功能，用户可以设定温度上下阈值，当温度超过设定值时，系统会发出警报。此功能对于工业生产中的温度监测和控制非常重要。 论文首先介绍了系统的基本原理和整体结构，并详细阐述了硬件和软件两个部分的设计。在软件设计中，特别描述了主控单片机AT89S52的程序设计，包括温度采集、AD转换、温度显示、温度报警和RS-485通信等功能的实现过程。通过对系统的调试与分析，验证了系统功能的正确性和稳定性。 关键词：AT89S52、RS-485、AD转换、PT100温度传感器 Abstract: Temperature is one of the most common process parameters in industrial production and automatic control. Temperature detection and control are necessary for production processes. To meet the requirements of temperature acquisition and measurement, the AT89S52-based 8-channel temperature detection system with RS-485 communication function is proposed. This system can achieve temperature detection and numerical display of multiple points and has RS-485 communication function. The main modules of this system include temperature acquisition, microcontroller control, AD conversion, temperature display, and RS-485 communication. The temperature detection is mainly realized using the thermistor Pt100 temperature sensor, and the collected values are converted through AD conversion, then the temperature is displayed on the LCD, and temperature alarm function is achieved by setting upper and lower temperature thresholds. This paper introduces the basic principles and overall structure of the system, and describes the hardware and software parts of the system in detail. Finally, the system is debugged and analyzed to verify the functionality of the system. Keywords: AT89S52, RS-485, AD conversion, PT100 temperature sensor.