基于STM32的太阳能光热实验系统  

Solar Thermal Experimental System Based on STM32

作　　者：管立伟 李正念 廖全当 卢宇 黄志平 任建明 

机构地区：[1]福建师范大学物理与能源学院,福州350117 [2]福建省量子调控与新能源材料重点实验室,福州350117

出　　处：《计算机系统应用》2018年第2期37-43,共7页Computer Systems & Applications

基　　金：福建省教育厅科技项目(JAT160105);福建省高新技术计划重点项目(2012H0021)

摘　　要：采用STM32设计实现了一种太阳能光热实验系统,介绍了系统的构成及功能,给出系统终端软、硬件系统设计.分析了温度传感器PT1000调理电路、AD转换及隔离电路、人工光源调光电路等单元电路的结构和工作原理.架构了多任务的软件体系,采用最小二乘法对温度实测数据进行分段线性化拟合,并引入误差评估原理来确定适用于PT1000的最佳校正方程.相关技术已应用于福建师范大学新能源工程中心的太阳能光热实验教学系统中,实际应用表明,该终端的性能指标满足设计要求.This study designs and realizes the solar-thermal experiment system based on STM32. It introduces the structure and function of the system as well as the design of hardware and software of the system terminal. It analyzes the operation principles and circuit structures of the functional circuits in the solar-thermal experiment system,which consists of the temperature sensor PT1000 modulation circuit, AD conversion and isolation circuit and artificial light dimmer circuit unit. The paper proposes an architecture multitasking software system, using the least squares fitting method for piecewise linearization of the measured temperature data, and introduces the error evaluation principle to determine the best suitable for PT1000 correction equation. The related technology has been applied to solar-thermal experimental teaching system of New Energy Engineering Center of Fujian Normal University. The application shows that the terminal performance indicators meet the design requirements.

关 键 词：STM32 太阳能光热实验系统 多任务 最小二乘法 

分 类 号：TK51[动力工程及工程热物理—热能工程]