發(fā)布時(shí)間：2018-07-22 15:12

【摘要】：以TMS320F28335處理器為控制核心設(shè)計(jì)了一個(gè)恒溫控制系統(tǒng),該系統(tǒng)由溫度測(cè)量與采集、半導(dǎo)體制冷片驅(qū)動(dòng)、顯示和存儲(chǔ)等模塊組成。采用高精度測(cè)溫儀采集溫度數(shù)據(jù),溫度偏差經(jīng)過PID算法處理控制程控電源輸出直流電流來(lái)調(diào)節(jié)半導(dǎo)體制冷片的制冷量,實(shí)現(xiàn)恒溫箱的溫度控制。實(shí)驗(yàn)結(jié)果表明:設(shè)定值為20℃時(shí),系統(tǒng)的過渡過程小于2 h,穩(wěn)態(tài)時(shí)溫度波動(dòng)小于0.03℃。該系統(tǒng)可被用來(lái)控制恒溫箱,且具有能耗小、體積小、易搬運(yùn)、成本低、操作方便等優(yōu)點(diǎn)。
[Abstract]:A constant temperature control system is designed with TMS320F28335 processor as the control core. The system is composed of temperature measurement and acquisition module, semiconductor refrigeration chip driver, display and storage module. The temperature data are collected by high precision thermometer and the temperature deviation is controlled by pid algorithm to control the output DC current of the programmable power supply to adjust the refrigerating capacity of the semiconductor refrigerant and to realize the temperature control of the thermostat. The experimental results show that the transition process of the system is less than 2 h and the temperature fluctuation is less than 0.03 鈩，

本文編號(hào)：2137868