OMRON 小型可编程序控制器对温度数据的检测与处理

温度变量经温度传感器（热电偶或热电阻）采集后，送入OMRON小型可编程序控制器（PC）的特殊功能单元——温度模块（变送器+模数转换），温度模块对检测到的温度模拟量数据（电压或电流）自动进行模数（A／D）变换，*后转变为PC可读的数字量（16进制数，以二进制数存放），通过编程PC可实现对读入的温度数据进行单位转换和数模（D／A）转换，根据工业现场需要，编制相应的PC处理程序，可对温度进行开环或闭环控制及实现温度对其他设备的跟随控制。  Detecting and Processing of Temperature Data by Using OMRON Mini-type Programmable Controllers

Zhu Qinghui

(Nanyang Insititute of Technology,Nanyang 473004,China)

Abstract:Temperature variable which has been collected via temperature sensors(thermocouples or thermal resistors) can be sent to the special function unit of a Programmable controller,namely,temperature module(converting apparatus plus anolog digidal conversion). temperature module converts the detected temperature anolog data(voltage or current) into digital data automatically(which can be read by a Programmable controller finally).A programmable controller can process the units of the temperature data and convert the digital data into corresponding voltage or current by interal program manmade. One can design certain programmable controller program with the need of the industry field to control the temperature in openloop or closeloop and control other facilities by use of the converted temperature data from time to time. 

Key words: Flash Memory；Thermocouple；Thermal Resistor；Converting apparatus；Anolog Digidal Conversion