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高压电器  2014 

基于DSP的BP神经网络真空度数据采集系统

, PP. 47-54

Keywords: 真空灭弧室,真空度,DSPTMS320F2812,BP神经网络,数据融合,eCAN

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Abstract:

设计了基于DSP芯片TMS320F2812和BP神经网络数据融合的真空度信号数据采集融合系统。首先,利用横磁场脉冲磁控法和屏蔽罩电位法双传感器,对真空灭弧室进行真空度检测,采集的模拟信号经放大处理后通过DSP转换到数字信号;其次,利用BP神经网络方法进行数据融合,以获取准确的采样数据。BP神经网络的训练过程需要的时间长、数据量大,所以利用特征向量进行训练的环节在MATLAB上实现,将训练好后得到的权值矩阵和阈值向量嵌入到DSP中;然后,对真空灭弧室的真空度采集数据处理后的融合值由TMS320F2812的eCAN模块串行通信到上位机由VB可视化页面对数据进行检测分析。重点提出的基于DSP的BP神经网络数据融合技术的数据处理方法和串口通信,并实验证明这种方法具有良好的容错性,诊断结论的可信度明显提高,能够有效提高测量数据的稳定性和准确度。

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