基于STC89C52和HX711的电子秤设计

Design of Electronic Scale Based on STC89C52 and HX711

电子秤是在人们日常生活中应用广泛的一种称重仪器。本文所设计的电子秤由应变式电阻压力传感器构成电桥来完成称量物体的重力到电压信号的转换,电压信号放大和模数转换部分由集成芯片HX711完成,由STC89C52单片机完成相应的计算,把得到的数字信号转换为相应的质量数值,并实现相应的计价、去皮等功能。称重信息由单片机控制LCD1602来显示。

Electronic scale is a weighing instrument and widely used in people’s daily life. The designed electronic scale consists of a bridge composed of strain resistance pressure sensor to complete the conversion of weighing object’s gravity to voltage signal. Voltage signal amplification and A/D conversion are completed by integrated chip HX711. The SCM STC89 C52 completes the corresponding calculation,converts the obtained digital signal into the corresponding quality value,and realizes the corresponding valuation,peeling and other functions. The weighing information is displayed by LCD1602 controlled by single chip computer.