高精度数字电子秤 摘 要:本系统采用 LHD001 全桥式称重传感器为数据采集关键,采集信号通过小信号放大器处理放大后,通过 AD 转换器将模拟量转换为数字量后送入STC89C52 进行数据处理,再由 LCD1602 进行数据显示
该系统由电源部分,数据采集及处理部分,AD 转换部分,键盘部分和显示部分构成
并且附加DS1302(时钟芯片)和 DS18B20(温度传感器),在称重的同步可以切换功能,查看时间和温度
该系统达到了预期指标,称重范围 0—8KG,精度 0
可以输入单价,计算总价
关键词:称重传感器 时钟 温度Abstract: The system USES the whole bridge type weighing transducer LHD001 for data acquisition core, small signal amplifier collected signal after handling amplification, after AD converter for the digital quantity analog conversion after STC89C52 carries on the data processing, sent by LCD1602 data show again
This system consists of power supply parts, data acquisition and processing parts, AD transform part, keyboard parts and display parts
And additional DS1302 (clock chip) and DS18B20 (temperature sensor), in the meanw