基于优化ZigBee的特高压直流微安表的设计

特高压直流微安表通常无法直接读数,且容易因涌流冲击而受损.为此采用ZigBee技术设计了无线通讯网络,以实现微电流传感器与显示系统之间的通讯,并对经典的ZigBee算法进行了优化以提高无线网络的抗干扰能力;为提升在大涌流作用下的保护性能,分析了不同保护元件的特性,设计出两级过流保护取样电路.基于所设计的算法和电路研制出...

Design of Ultra High Voltage DC Microammeter Based on Optimized ZigBee

The DC microammeter of the ultra-high voltage device was usually unable to read directly and was easily damaged by surges.Therefore,ZigBee technology was used to design a wireless communication network to realize the communication between the micro-current sensor and the display system,and the classical ZigBee algorithm was optimized to improve the anti-interference ability of the wireless network.In order to improve the protection performance under the influence of inrush current,the characteristics of different protection elements were analyzed,and two levels of over-current protection sampling circuit were designed.Based on the designed circuit,the ultra-high voltage DC microammeter was developed and tested in the laboratory,whose measurement accuracy reaches 0.1 level.The effect of optimized ZigBee algorithm and overcurrent protection circuit was tested in ultra-high voltage field test.The results show that the data can be transmitted reliably in the case of remote communication distance and complicated electromagnetic environment,and it can effectively protect the impact of actual inrush current.