[原创]怎么避免工程中“干扰”问题？...

<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">工程抗干扰四大基本要领</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">—— “</span><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">一防，二避，三抗，四补</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">”</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></span></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">一防：设防，将干扰拒之门外，</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">措施：</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">1. </span><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">线缆穿镀锌铁管，走金属线槽；</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">2. </span><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">线缆埋地；</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">3. </span><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">采用双绝缘双屏蔽抗干扰同轴电缆；</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">4. </span><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">摄像机与护罩绝缘，护罩接大地；</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">二避：改变视频原信号传输频带或传输方式，避开视频带宽内的干扰，</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">措施：</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">1.</span><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">采用光缆，微波、射频等调制方式；</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">2.</span><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">采用数字变换、处理和传输方式；</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">三抗：外界电磁干扰已经通过传输电缆</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">“</span><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">混入视频信号中</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">”</span><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">，解决办法就是</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">“</span><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">抗</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">”</span><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">，</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">措施有：</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">l </span><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">传输变压器抑制</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">50/100Hz</span><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">低频干扰；</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">l “</span><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">斩波</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">”</span><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">技术；</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">l </span><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">视频预放大提高</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">“</span><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">信号</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">/</span><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">干扰</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">”</span><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">比（信噪比）技术：理论上实践上都应该是可行的。但在处理线缆传输失真和附加放大失真问题上，还有待完善。</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">l “</span><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">加权抗干扰器</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">”</span><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">，不调制不变换，保持原视频基带传输方式，同时具有抑制干扰和视频恢复双重功能。</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">四补：抗干扰是提高图像质量的措施之一，还要同时考虑到补偿传输线缆和设备引入的衰减和失真，恢复视频信号原有特性，确保图像质量。</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">“</span><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">加权抗干扰器</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">”</span><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">和</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">“</span><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH"><font face="宋体">视频恢复主机</font></span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US">”</span><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">，都具有图像质量控制恢复功能；</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">抗干扰四大基本要领，是从不同的技术侧面采取的不同措施，掌握了它们的原理、性能和使用方法，在工程中灵活运用，才能立于不败之地。</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-INDENT: 25.5pt; MARGIN: 0cm="0cm"  0cm="0cm"  0pt; BACKGROUND: white"><font face="宋体"><span style="COLOR: black; FONT-SIZE: 9pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-language: ZH" lang="ZH">关于抗干扰四大基本要领，这种提法还只是个人意见，不一定确切。目的是对工程抗干扰技术措施的认识和选择，力求探讨出一种清晰明了概念和要领。不再茫然，不再无所适从，不再为误导宣传所左右，做出更多、更高水平的样板工程。</span><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt; mso-fareast-language: ZH" lang="EN-US"><o:p></o:p></span></font></p>
<p style="TEXT-ALIGN: left; MARGIN: 0cm="0cm"  0cm="0cm"  0pt" class="MsoNormal" align="left"><span lang="EN-US"><o:p><font face="Times New="New"  Roman">&nbsp;</font></o:p></span></p>

<p>学习了，基本，但是实用的东西</p>

<p>不错</p>