为使这些模拟量或非标准数字协议输出的仪表升级为HART型智能仪表，一般需要定制与之相配套的电子部件或HART协议扩展模块。

If we want to update those analog or non-digital instruments to HART instruments, typically a kind of HART protocol expanding module (electric module) should be custom-designed for them.

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本文分析了高帧频摄像机数字口输出工作时序，针对其数据量大的特点，提出利用FPGA外部扩展SDRAM的方式存储缓冲图像数据的解决方案。

The camera operation timing is analyzed in this paper. For the feature of large amount of image data, a solution that FPGA extended SDRAM to store and buffer image data is presented.

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