基于单片机的智能电子秤设计.pdf

题 目: 基于单片机的智能电子 秤的设计 - I - 摘 要 现在人们的生活因为科技的飞跃式发展二得到了改善，人们也对日常生 活中常用的称重技术也有了新的标准。在今天电子秤的使用已经变得非常普 遍，但还是有很大的缺陷，比如说电子秤的体积大、制作成本太高、需要工 频交流电源、受到工作环境的影响。现在社会上的便携秤大多是杆秤，亦或 者是通过弹簧发生形变来完成计量的弹簧秤，人们群众大部分使用的是被淘 汰的杆秤。多年来，人们一直等待着精确可靠、体积较小以及质量可靠的的 智能电子称投放到市场中。 本文是设计一款可以实际使用的智能电子称，文章中简单介绍了电子秤 的工作原理，还介绍了仪器的误差来源，还叙述了电子秤的电路设计与软硬 件设计。 与一般的便携式电子秤相比智能电子秤的体积更小、计量更准确、携带 更方便、操作更简易、称量更迅速，而且还把称量功能和计算价格的功能放 在了一起，更能够满足市场交易和普通居民家庭的称重要求，有不错的市场 潜力和应用价值。 关键词： 智能电子秤；称重传感器；A/D 转换器；单片机；误差分析； 软硬件设计 - II - Abstract Now peoples life has been improved due to the rapid development of science and technology. People have also set new standards for weighing technology commonly used in daily life.Today, the use of electronic scale has become very common, but there are still many defects, such as the large volume of electronic scale, the high cost of production, the need for power frequency AC power supply, affected by the working environment. At present, most of the portable scales in the society are steelyard, or the spring scales which measure by the spring deformation. Most of the people use the eliminated steelyard. For many years, people have been waiting for accurate, reliable, small and reliable intelligent electronic scales to be put into the market. This paper is to design an intelligent electronic scale which can be used in practice. The working principle of the electronic scale, the error source of the instrument, the circuit design, software and hardware design of the electronic scale are introduced. Compa