《机电工程》杂志,月刊( 详细... )
中国标准连续出版物号: ISSN 1001-4551 CN 33-1088/TH
主办单位:浙江省机电集团有限公司
浙江大学
主编:陈 晓
副 主 编:唐任仲、罗向阳(执行主编)
总 经 理:罗向阳
出 版:浙江《机电工程》杂志社有限公司
地 址:杭州市上城区延安路95号浙江省机电集团大楼二楼211、212室
电话Tel:+86-571-87041360、87239525
E-mail:meem_contribute@163.com
国外发行:中国国际图书贸易总公司
订阅:全国各地邮局 国外代号:M3135
国内发行:浙江省报刊发行局
邮发代号:32-68
广告发布登记证:杭上市管广发G-001号
在线杂志 |
当前位置: 机电工程 >>在线杂志 |
高性能通用温度采集仪的研制
作者:张震,王剑,黄国辉,姜周曙 日期:2010-06-21/span> 浏览:3173 查看PDF文档
高性能通用温度采集仪的研制
张震,王剑,黄国辉,姜周曙
(杭州电子科技大学 自动化学院,浙江 杭州 310018)
摘要:温度采集是现代测控系统的重要内容之一。针对工业现场这一问题,研制了一套多通道、高性能、通用温度采集仪。该系统以ARM Cortex系列的STM32芯片和24位AD芯片AD7793为核心,详细介绍了其温度采集电路、数字量输入输出电路、液晶显示电路、存储电路和通讯接口电路的设计。该采集仪在同一个模拟输入通道上实现了对热敏电阻、三线制热电阻、四线制热电阻、热电偶等信号的通用采集,通过RS232/485、USB、CAN等总线接口与上位机或数据采集网络进行了通讯或显示等,能够适用于多种场合。实验结果表明,其设计结构合理,精度较高,结果令人满意。
关键词:温度采集;通用;STM32;硬件电路;USB接口
中图分类号:TP274文献标识码:A文章编号:1001-4551(2010)03-0080-05
Study of high performance generalpurpose temperature acquisition instrument
ZHANG Zhen, WANG Jian, HUANG Guohui, JIANG Zhoushu
(School of Automation, Hangzhou Dianzi University, Hangzhou 310018, China)
Abstract: Temperature acquisition is one of the key sectors in modern measurement and control system. Aiming at the desire of industrial environment, high performance and generalpurpose temperature acquisition instruments with multichannels based on STM32 were fabricated. The system was developed based on ARM Cortex series MCU and 24bit A/D deviceAD7793, and its parts were designed, which included temperature acquisition circuit, digital input/output circuit, LCD circuit, storage circuit, communication interface circuit. Through every analog input channel, the temperature collection of thermistor, 3Wire/4Wire RTD and thermocouple signal collection was achieved, and communication with PC, data acquisition network or display on PC with multiple communication interfaces were realized, including RS232/485、USB、CAN bus interface for different environment. The experiment results demonstrate that the system has reasonable structure and high precision and satisfactory results.
Key words: temperature acquisition; generalpurpose; STM32; hardware circuit; USB interface
友情链接