张菁,赵鹏.一种高精度悬臂梁式电子秤的研制[J].电子测量技术,2017,40(6):15-18
一种高精度悬臂梁式电子秤的研制
Development of a high precision cantilever beam type electronic scale
  
DOI:
中文关键词:  电子秤  单片机  悬臂梁  电阻应变片
英文关键词:electronic scale  MCU  cantilever beam  electric resistance strain gauge
基金项目:陕西省教育厅专项科研计划(15JK1864)资助项目
作者单位
张菁 榆林学院能源工程学院榆林719000 
赵鹏 榆林学院能源工程学院榆林719000 
AuthorInstitution
Zhang Jing School of Energy Engineering, Yulin University, Yulin 719000, China 
Zhao Peng School of Energy Engineering, Yulin University, Yulin 719000, China 
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中文摘要:
      针对电子秤悬臂梁材质、称重方式及功能单一的问题,提出了单片机为控制器,利用钢质悬臂梁上粘贴电阻应变片作为称重传感器,结合矩阵键盘电路、LCD显示电路、A/D转换电路及语音播报电路等实现钢制悬臂梁悬挂式电子秤的设计。具备5.00~500 g重量的测量功能,当重量小于50 g时,称重误差小于0.5 g,重量在50 g以上时,称重误差小于1 g;具备单价设置功能并结合重量实现金额的累加;具备去皮功能及语音播报功能。整个系统采用蓄电池供电,增加了系统的便携性和可重复利用性。实验证明,该系统集测量精度高、显示直观及工作性能稳定等优点,对应用于各种场合的高精度悬臂梁式电子秤的改进有一定的指导意义。
英文摘要:
      With regard to the electronic scale′s problems such as the material of the electronic scale cantilever beam, weighing method and unitary function, this article proposes a design of the steel cantilever beam type electronic scale which uses MCU as a controller, electric resistance strain gauge pasted on the steel cantilever beam as weighing sensors, combines matrix keyboard circuit, LCD display circuit, A/D conversion circuit and voice broadcast circuit, etc. Such electronic scale has the function of measuring the weight between 5.00 g to 500 g. When the weight is below 50 g, the weighting error will be less than 0.5 g; when the weight is above 50 g, the weighting error will be less than 1 g; Such electronic scale has the function of unit price setting, amount accumulating according to the weight; the machine also has the net weight function (i.e. deducting the packing′s weight) and the voice broadcast function. The whole system adopts the storage battery as its storage battery which improves the portability and the reusability of the system. The experiment verifies that this system has the advantages of high measure precision, clear display, stable performance, etc., could be used in diversified situations. This design, therefore, has a certain guiding significance to the improvement of the cantilever beam type electronic scale.
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