矿山动态轻轨衡数据采集器的设计

为满足野外矿山环境下矿山动态轻轨衡高速数据采集目的,本文设计一种动态轻轨衡数据采集器。本设计以ARM 7处理器为核心,处理器的激励电压由220V交流市电经转换后提供。处理器利用自身模数转换功能对模拟称重传感器采集到的模拟信号数字化并预处理后,通过RS485接口与上位机进行通讯,针对处理器供电电源以及信号输入端设计了防雷电路以保护核心器件免受雷击破坏。

A data acquisition unit for dynamic weighing bridge is designed for the purpose of high-speed data collection in the wild environment. This unit is designed based on ARM7 processor, whose excitation voltage is provided after conversion of 220V alternating current. The simulate signal collected by simulate weighing sensor is converted to digital form and processed in ARM7 processor. The processor communicates with the next higher level equipment by RS485 interface. In order to protect the core devices from lightning damage, lightning protection circuit is designed at the ports of CPU power supply and signal input.