介绍了绝对值型旋转编码器通过PLC将格雷码转换成二进制码，实现闸门开度测量的方法。
In this paper, The Grey code of absolute rotary encoder converting to Binary code by PLC is introduced, which realize measuring gate opening.
将直接数字控制器应用于闸门控制，实现闸门开度的数字化控制是顺应水利自动化的号召提出的。
The scheme of DDC (Direct Digital Control) designed in gate controlling so as to realize digital control is put forward to keep up with the calling of hydraulic automation.
对系统中涉及的闸门开度检测、开度控制、利用API函数进行串行通讯等关键技术作了较详细的介绍。
The key technology of gate opening detected, opening controlled, serial communication by API function, are mainly discussed.
水库闸门开度测量的准确性，不仅关系到水库闸门控制的准确性，而且还关系到水库下泻流量的准确计算。
The veracity of sluice gate opening is not only relating to the veracity of sluice gate control, but also relate to the veracious result of emission ability of reservoir.
目前水库闸门开度测量通常使用的是数字编码器，它的测量精确度高且使用绝对编码技术，得到广泛的应用。
At present, the measurement of sluice gate opening usually USES the digital encoder. It has the advantage of high measuring precision and USES the absolute coding method which makes it widely used.
目前水库闸门开度测量通常使用的是数字编码器，它的测量精确度高且使用绝对编码技术，得到广泛的应用。
At present, the measurement of sluice gate opening usually USES the digital encoder. It has the advantage of high measuring precision and USES the absolute coding method which makes it widely used.
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