铝电缆镀铜电流密度的快速监测系统设计

Design of Fast Monitoring System for Current Density of Copper Plating on Aluminum Cable

在铝电缆表面镀铜工艺中,电流监测系统采用有线传输的方式,监测速度较慢、实时性不高。设计了一种用于铝电缆镀铜电流密度的快速监测系统,阐述了铝电缆电镀铜机理,选用铝片进行实验,利用测量镀层厚度和镀层耐腐蚀性评定方法,进行电流密度对镀层耐蚀性的影响、电流密度与镀层厚度的关系实验,确定电流密度的监测范围。在此基础上,依据系统需求设计总体结构,介绍了主控芯片、电流传感器电路和无线通信芯片,最后进行了软件代码设计。结果表明,所设计的监测系统精度高、监测速度快,可有效利用资源。

In the process of copper plating on the surface of aluminum cable, wired transmission mode is adopted in current monitoring system, the monitoring speed is slow and the real-time is not high. In this paper, a fast monitoring system for current density of copper plating on aluminum cable surface was designed, mechanism of the copper plating on aluminum cable surface was expounded. Influence of current density on coating corrosion resistance and the relationship between current density and coating thickness were investigated on aluminium sheet by testing coating thickness and using coating corrosion resistance evaluation. On this basis, the overall structure was designed according to the system requirements, the main control chip, current sensor circuit and wireless communication chip were introduced in details, finally, the software code was designed. Results showed that the designed system had high precision, fast monitoring speed and could utilize the resources effectively.