摘要:介紹了采用MC68HCllE 9 單片機(jī)作為主芯片和較少的外圍電路設(shè)計(jì)的數(shù)字多用表，對(duì)儀表的智能校準(zhǔn)技術(shù)和實(shí)現(xiàn)方法進(jìn)行了深人的研究，實(shí)現(xiàn)了高精度的A/D轉(zhuǎn)換，得到了高準(zhǔn)確度的測(cè)量結(jié)果;闡述了利用智能校準(zhǔn)技術(shù)設(shè)計(jì)智能儀器儀表的可行性和實(shí)現(xiàn)
的技術(shù)路線?；谥悄苄?zhǔn)技術(shù)的數(shù)字多用表可以完成交流直流電壓、電流的測(cè)量，也可以測(cè)量電阻、周期和頻率，可以自動(dòng)對(duì)測(cè)得的數(shù)據(jù)進(jìn)行誤差修正。
關(guān)鍵詞:智能化 A/D轉(zhuǎn)換 校準(zhǔn) 自動(dòng)切換 量程

Abstract:T hed igitalm ultimeterd esignedb ya doptingM C68HCIIE 9 s inglec hipm icrocomputeras th em ainc hipa ndfe werpe ripheralci rcuits is introduced, The intelligent calibration technique and the realization methods were studied, A/D conversion with high precision was implemented,an dh ighlya ccuratem easuredre sultsw ereo btained.T hefe asibilitya ndth ete chnologyro utefo rd esigningin telligentin strumentsb yu sing
intelligent calibration technique are expounded. The measurement for AC&DC voltage and current, resistance period and frequency can be accomplished by using the digital multimeter based on intelligent calibration technique. The error of measured data can also be automatically revised.