多源表面温度信号发生装置的硬件设计  

Hardware Design of Multi-source Surface Temperature Signal Generating Device

作　　者：王丰华[1,2] 李建清[1] 吴剑锋[1] 

机构地区：[1]东南大学仪器科学与工程学院,江苏南京210096 [2]南京水利水文自动化研究所,江苏南京210012

出　　处：《仪表技术与传感器》2014年第1期83-84,106,共3页Instrument Technique and Sensor

基　　金：国家高技术研究发展计划(863计划)资助项目(2009AA01Z314)

摘　　要：文中介绍了一种小型的多源表面温度信号发生装置的硬件设计。该装置采用4个15 mm×15 mm的珀尔贴作为温度信号发生源,通过实时精确的硬件控制和算法,可在其表面快速发生一定温度范围内、任意波形的温度信号曲线。设计了一种集成度高、简单高效的压控恒流源电路,能够输出大小、方向精密可控的电流,来控制珀尔贴的发热。系统核心部分采用了带反馈的闭环控制电路,采用PID算法实时控制,很好的实现了装置的设计目标。系统还包含室温检测、压力传感检测等辅助部分。整个装置通过RS-232串口与上位机软件进行通信,能通过学习来复现给定的温度信号曲线。The paper introduces a hardware design of a small multi-source surface temperature signal generating device.The device makes four 15 × 15 mm Peltier as the temperature signal generation source.Through the real-time and accurate hardware control and algorithm it can generate rapidly a temperature of the arbitrary waveform signal curve in a range of temperatures on the surface.A high integration,simple and efficient voltage-controlled current source circuit is designed that can output size,orientation precision controlled current to control the Peltier heating.Core part of the system uses a closed-loop control circuit with feedback,real-time control using PID algorithm,to achieve a good device design goals.The system also includes the room temperature detection,the pressure sensor detection and other auxiliary parts.The entire device through the RS-232 serial port to communicate with the PC software,through learning to reproduce the given temperature signal curve.

关 键 词：表面温度信号发生 多源 压控恒流源 温度曲线控制 

分 类 号：TH89[机械工程—仪器科学与技术]