采集终端时钟错乱问题分析及处理

Analysis and Processing of Acquisition Terminal Disordered Clock

针对在运采集终端时钟错乱现象,造成无法正常抄读电能表数据问题,通过对故障终端时钟电路功耗测试和其时钟电路设计原理的分析,认为时钟供电电池欠压是导致采集终端时钟错乱的主要原因,提出利用无线公网基站GPS时钟实现采集终端自对时的处理措施,该措施可有效避免由于时钟电池欠压引起的时钟错乱问题。

Aiming at the phenomenon of the disordered clock causing the problem of unable to read the electricity meter data properly,through the analysis of the power consumption test of the fault terminal clock circuit and the design principle of its clock circuit,this paper considers that the under-voltage of the clock power supply battery is the main cause of the acquisition terminal clock disturbance.The idea of self-timing terminals is put forward with the GPS clock of wireless public network base station.This measur e can effectively avoid the clock skew caused by the clock batt ery.