基于單片機(jī)的多功能電子秤的設(shè)計(jì)與實(shí)現(xiàn)(存儲版)
【正文】 畫面LCALL DELAY500LCALL DELAY500LCALL DELAY500LCALL TISHI 。點(diǎn)變量1ADDR DATA 3AH 。調(diào)用延時子程序的次數(shù)DATA1 DATA 32H 。如果使用精密度較高的傳感器，效果會好的多。這就需要一段比較程序以及一小段置1清0程序?？梢圆捎贸绦虿樵兎绞剑訒r等待方式和中斷方式。DA指令可完成這一調(diào)整。監(jiān)控程序的主要作用是實(shí)時的響應(yīng)來自系統(tǒng)的各種信息，按信息的類別進(jìn)行處理；當(dāng)系統(tǒng)出現(xiàn)故障時，能自動的采取有效的措施，消除故障，保證系統(tǒng)能夠繼續(xù)進(jìn)行正常工作。可與CPU直接接口，提供兩種界面來連接微處理機(jī)：8位并行及串行兩種連接方式。 A/D轉(zhuǎn)換器設(shè)計(jì)中A/D轉(zhuǎn)換器用的是ADC0809 A/D轉(zhuǎn)換器，它是8路8位逐次逼近式轉(zhuǎn)換器，結(jié)果為8位二進(jìn)制數(shù)據(jù)，轉(zhuǎn)換時間短（一般在級），滿足題目要求的“實(shí)時采樣”，%上下，比較適中，適用于一般場合。 R1R1R2R212348765A3AD62612348765A1AD62612348765A2AD626RGR50R22R20R22Ui1Ui2U01U02Uout 放大電路硬件原理圖數(shù)據(jù)采集系統(tǒng)的核心是計(jì)算機(jī)，他對整個系統(tǒng)進(jìn)行控制和數(shù)據(jù)處理，他由采樣/保持器，放大器，A/D轉(zhuǎn)換器，計(jì)算機(jī)組成。所謂半橋，即將電橋的四臂接入四應(yīng)變片。關(guān)鍵詞：單片機(jī)，電子秤，A/D, LCD Abstract With the era of rapid development of science and technology, microelectronics and puters and other achievements of modern electronic technology to the traditional electronic measurement and instrument tremendous impact and revolutionary test instrumentation and control devices were more advanced intelligent instruments replaced the traditional electronic measuring instruments far away from, function, determined the level of precision and automation tremendous changes have taken place, and the corresponding emergence of a variety ofintelligent instrument control system, making scientific experiments and applications engineering to significantly improve the degree of automation. As a weight measurement apparatus, intelligent electronic scale industries began to appear in the measurement accuracy, high speed, easytorealtime measurement and monitoring of the great advantages, and began to gradually replace the traditional mechanical measurement of said lever to bee a mainstream product measurement. This electronic scale designed to MCU as the main parts, assembly language for software design, hardwarebased Zeyi halfbridge sensors, electronic scales measuring 0 ~ 500g, upper threshold value can be changed at any time and to reach the threshold alarm cell
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