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电子秤是电子衡器中的一种,是测定物体质量的一种重要工具,广泛应用于工农业、科研、交通、内外贸易等各个领域,与人民的生活紧密相连,是不可缺少的计量设备。本系统的设计基于电阻应变式称重传感器的全桥式称重原理。硬件电路主要是基于单片机AT90C51为核心的控制单元实现数据的处理,采用压力传感器对数据进行采集,电子秤专用24位AD转换芯片HX711对传感器采集到的模拟量进行AD转换,转换后的数据送到单片机进行处理,数据显示由LCD12864液晶实现,该系统具有自动校准功能,能够完成商品的称重和商品价格计算。其称重范围为5.00~500.00g。整个系统结构简单,使用方便。
Electronic scale is an electronic weighing instrument, is an important tool for measuring the quality of objects, widely used in industry and agriculture, research, transportation, domestic and foreign trade and other fields, and people’s lives are closely linked, is an indispensable measurement equipment. The design of this system is based on the full-bridge weighing principle of strain gauge load cells. The hardware circuit is mainly based on single-chip AT90C51 as the core of the control unit to achieve data processing, the use of pressure sensors to collect data, electronic scales dedicated 24-bit A D conversion chip HX711 analog sensor to the AD conversion, conversion Data sent to the microcontroller for processing, data display LCD12864 LCD achieved, the system has automatic calibration function, to complete the weighing of goods and commodity price calculation. The weighing range of 5.00 ~ 500.00g. The entire system structure is simple and easy to use.