为了提升关口表的通信性能和效率,对集成以太网的关口表中的嵌入式采集系统的应用流程进行优化设计。首先基于COMTRADE协议针对电表的故障录波记录的查询和读取进行详细的自定义;其次采集系统通过UART周期性采集电表中更新的COMTRADE历史数据、存储到FTP服务器,并对数据量大的dat文件进行插值处理;再次从整体上提出建立一种优先级机制来实现采集器模块和电表之间存在多种通信请求时的高效并发请求管理。试验结果表明,相比传统方案,自动采集电表历史数据响应客户端故障录波记录查询速率有所提升,为关口表中嵌入式Linux采集系统的软件开发提供了新的解决思路。

To improve the communication performance and efficiency of gateway meter,the key application processes of embedded acquisition system integrated ethernet is designed.Firstly,the fault recorder data of gateway meter is customized in detail based on COMTRAD protocol.Secondly,the acquisition module automatically collects the latest COMTRADE history data generated in the meter and stores it to the FTP server through periodic query of UART.And the data files with large amount of data are interpolated to reduce the amount of transmitted data.Thirdly,a priority mechanism is proposed to realize efficient concurrent request management when multiple communication requests may exist between acquisition system and meter.Finally,the experiment verifies the improvement of query rate of automatic collection of historical data of meter compared with the traditional scheme,it provides a new solution idea for the efficient software development of the embedded Linux acquisition system in the gateway meter.