电子质量
電子質量
전자질량
Electronics Quality
2015年
10期
11-15
,共5页
称重系统%单片机%电阻应变式传感器%仪用放大器%数字式
稱重繫統%單片機%電阻應變式傳感器%儀用放大器%數字式
칭중계통%단편궤%전조응변식전감기%의용방대기%수자식
weighing system%MCU%resistance strain sensor%instrumentation amplifier%digital
设计了一款以STC单片机为中心控制器的数字式精准称重系统，对系统作了硬件和软件设计，利用电阻应变式传感器对称重物体采集，采集信号经仪表放大器进行信号处理及放大，采用单片机内部AD转换，标称值与AD转换输出值的良好线性回归对应处理，用键盘(按键)实现物品价格及去皮设置。经测试系统各功能正常，称重范围为0～0.999kg，重量误差小于±0.002kg，液晶实时显示总重量和总价格。系统计量准确、数字式实时显示、体积小、成本低、操作简便，适用于各种要求精准称重而重量较小的场合，有较好的应用前景。
設計瞭一款以STC單片機為中心控製器的數字式精準稱重繫統，對繫統作瞭硬件和軟件設計，利用電阻應變式傳感器對稱重物體採集，採集信號經儀錶放大器進行信號處理及放大，採用單片機內部AD轉換，標稱值與AD轉換輸齣值的良好線性迴歸對應處理，用鍵盤(按鍵)實現物品價格及去皮設置。經測試繫統各功能正常，稱重範圍為0～0.999kg，重量誤差小于±0.002kg，液晶實時顯示總重量和總價格。繫統計量準確、數字式實時顯示、體積小、成本低、操作簡便，適用于各種要求精準稱重而重量較小的場閤，有較好的應用前景。
설계료일관이STC단편궤위중심공제기적수자식정준칭중계통，대계통작료경건화연건설계，이용전조응변식전감기대칭중물체채집，채집신호경의표방대기진행신호처리급방대，채용단편궤내부AD전환，표칭치여AD전환수출치적량호선성회귀대응처리，용건반(안건)실현물품개격급거피설치。경측시계통각공능정상，칭중범위위0～0.999kg，중량오차소우±0.002kg，액정실시현시총중량화총개격。계통계량준학、수자식실시현시、체적소、성본저、조작간편，괄용우각충요구정준칭중이중량교소적장합，유교호적응용전경。
This paper designed a digital precision weighing system in STC microcontrol er as the central con-trol er,it made the hardware and software design of the system,it used resistance strain sensor weighing ob-ject col ection,col ecting signal by the instrumentation amplifier for signal processing and amplification,using MCU internal AD conversion,the nominal value of the linear regression good AD converter output values cor-responding to the processing,realized prices of goods and tare with keyboard(keys).After testing the system each function properly, weighing in the range of 0~0.999kg,weight error is less than ±0.002kg,LCD real-time display of the total weight and total price.The system accurate measurement,digital real-time display,smal size,low cost,easy to operate,for a variety of requirements for precision weighing and weight smal er occa-sions,there is a good prospect.
