由于高頻電磁場(chǎng)對(duì)溫度測(cè)量造成的嚴(yán)重干擾, 在微波場(chǎng)下的溫度測(cè)量一直是測(cè)量與控制領(lǐng)域難以解決的一個(gè)技術(shù)難題。文章給出使用熱敏電阻- 高阻導(dǎo)線組成抗電磁干擾的溫度傳感器結(jié)構(gòu)以解決這個(gè)難題, 并重點(diǎn)介紹它的設(shè)計(jì)方法。這種傳感器已成功地應(yīng)用于醫(yī)院部門的微波熱療機(jī)的生產(chǎn), 其抵抗強(qiáng)電磁波干擾的特性令人滿意。
關(guān)鍵詞: 微波場(chǎng)測(cè)溫; 熱敏電阻- 高阻導(dǎo)線溫度傳感器; 抗電磁干擾
Abstract : As a result of high frequency electromagnetic wave serious interference , measure temperature in microwave field all along being an difficult problem belongs to the measure and automatic domain. Here advances an temperature sensor structure which make use of Thermistor - High Resistance Conductors to resolve this problem fairly good , and the article puts emphasis on method how to realize this structure. This temperature sensor has been applied to produce microwave heat - therapy medical in2 struments for hospital , its characteristics of resist strong electromagnetic wave interference is satisfactory.
Key words : measure temperature in microwave field ; temperature sensor which make use of thermistor - high resistance conductors ; resist strong electromagnetic wave interference