基于STM32的智能温度巡检仪设计.docx

PAGE PAGE I 摘 要 温度作为日常生活和农业生产中的一个重要的物理参数，与自然界中任何化学和物理过程都有紧密关联。传统的测量仪表有性能差、功能单一、测量精度不高的和读数不方便等缺点，八路数字温度巡检仪能够实现在安全生产、产品质量、生产效率等重大技术经济指标，因而数字式智能化温度巡检系统是当前主要的形式。 本课题介绍了基于STM32的八路数字温度巡检系统的设计方案以及软硬件的实现。本设计选择STM32嵌入式系统作为MCU，STM32的内核基于cortex-m3，该核心拥有130纳米专用低漏电流制造工艺和意大利半导体独有的优化节能架构。它是行业领先的节能性能，具有很高的性能、低功耗、低成本的优势正符合本次设计的要求。测温单元电路选择最常用的热电偶与热电阻，设计实现4路B分度号热电偶和4路Pt100热电阻测温元件接入功能，通过AD转换将八路模拟信号转换为数字信号，最后一道程序是，通过单片机的程序处理以及控制，得到准确的温度值，并通过LED数码管的显示实现温度检测，当温度超过测量范围或设定值，由报警单元发光二极管闪动进行超限提示。本课题给出了系统总体设计框图，系统设计原理及程序设计等，主要以热电偶测温电路和热电阻测温电路的设计为主，在硬件平台上实现了设计要求。 关键词：STM32；Pt100；热电偶；温度巡检 PAGE PAGE 1 P PAGE II Abstract As an important physical parameter in daily life and agricultural production, temperature is closely related to any chemical and physical processes in nature. Traditional measuring instruments have some shortcomings, such as poor performance, single function, low measurement accuracy and inconvenient reading. Eight-way digital temperature patrol instrument can achieve important technical and economic indicators such as safety in production, product quality and production efficiency. Therefore, digital intelligent temperature patrol system is the main form at present.. This paper introduces the design scheme of eight-way digital temperature inspection system based on STM32 and the realization of software and hardware. This design chooses STM32 embedded system as MCU. The core of STM32 is based on cortex-m3. The core has 130 nanometer special low leakage current manufacturing technology and Italian semiconductor unique optimized energy-saving architecture. It is the industrys leading energy-saving performance, with high performance, low power consumption, low cost advantages is in line with the requirements of this design. The circuit of temperature measuring unit chooses the most commonly used thermocouple and thermal resistance, designs and realizes the access functions of 4 B-scale thermocouple and 4 Pt100 thermal resistance temperature measuring elements, conv