摘要
开发了一套具有人机实时交互功能的水冷式温控实验系统"iWater"。该系统控制部分采用闭环结构:由PTC陶瓷片模拟发热对象,STM32型微控制器根据DS18B20温度传感器提供的实时温度反馈,经过PID运算,对H桥驱动输出PWM指令,从而对水冷机进行调压调速,实现对温度的恒值控制。扩展多种人机交互功能:通过红外遥控模块,可实时设定温度、控制策略以及各类参数;现场输出选取TFT-LCD屏,可实时显示温度曲线;实验数据通过USART通道,在上位机的VisualScope界面实时绘制温度曲线,完成对实验数据的观察、存储与分析。最终完成了样机制作,实验结果验证"iWater"实验系统的有效性。
The water-cooling unit is a device which utilizes water-circulation to accelerate the cooling process of CPU. This paper develops the ＂iWater＂ experimental system, and applies it to control temperature and realize real-time human-machine interaction. The closed-loop control mechanism is utilized. PTC ceramic plays the role of heat source; DS18B20 digital thermometer provides temperature feedback; STM32 MCU performs PID strategy and generates PWM command to H-bridge driver. Since the speed of water-cooling unit is controlled by applying a variable voltage, the temperature is regulated as constant. Multiple functions of human-machine interface are integrated. The infrared remote control is applied to set temperature reference, control strategy, and various parameters. TFT-LCD is adopted for on-spot display of temperature waveforms. The experimental data are transmitted via the USART channel, and the temperature trajectory is plotted in the VisualScope of host computer. A prototype is developed and test results validate the effectiveness of this ＂iWater＂ experimental system.
出处
《实验室研究与探索》
CAS
北大核心
2017年第5期53-56,共4页
Research and Exploration In Laboratory
基金
国家自然科学基金(71401125)
上海市重点课程建设项目(沪教工委高(2015)29号文)
同济大学第11期实验教改项目(JJSHBC-2015JPSY-018)
同济大学第8期精品实验项目同济实([2015]4号)
关键词
水冷机
温度控制
人机交互
实验教学系统
water-cooling unit
temperature control
human-machine-interaction （HMI）
experimental education system
作者简介
徐志字（1982-），男，山西太原人，高级工程师，从事智能自动化应用研究。Tel．：021-69584663：E-mail：xuzhiyu@tongji．edu．cn
通信作者：余有灵（1973-），男，重庆人，副教授，从事智能控制理论及应用研究。Tel．：021-69585441；E-mail：yuyouling@tongji．edu．cn
