Secondly, it presented the programme of data compression of data acquisition system in the mass, which was described by data compression device.

设计了在数据采集系统中进行数据压缩的方案，阐述了数据压缩装置的设计方案；

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Then, the principle of area exchange rate was used for image processing. After that, the data was kept and transmitted to the upper device by image compression algorithm of BP neural network.

然后采用面积换速度的原则进行图像处理，在图像处理过程中采用 BP网络图像压缩的算法保存并传输给上位机。

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