Abstract: This paper implements the video compression of image based on the wavelet transform chip ADV611 to solve the data flow problem, and designs Ethernet-PROFIBUS gateway to complete the transportation of data, taking advantage of high speed and high bandwidth of field bus. According to the result of experiment, the given method not only can expand the transmission distance, accelerate the transmission speed, reduce the transmission errors, but also save cost, avoid repeating investment on the premise of guaranteeing the integrality of image data and the high quality of the image.

Key words: PROFIBUS, Wavelet transform, ADV611

摘要： 采用基于小波变换的ADV611视频压缩芯片进行图像压缩，解决了视频数据过大的问题。设计了PROFIBUS-DP与Ethernet的网关模块来进行图像数据的传输，充分利用了现场总线传输快、带宽高的特点，并给出了传输系统的硬件组成。实验证明这种方法不仅能够在保证图像数据完整性和图像质量的同时，极大地延长了传输距离，提高了传输速度，减少了传输误差，还可以节约成本，避免重复投资。

关键词: PROFIBUS, 小波变换, ADV611