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标题:
门禁使用说明
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作者:
yyashzj
时间:
2008-12-22 10:17
标题:
门禁使用说明
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 9pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none;"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman";">下面按照门禁系统现场安装的一般顺序加以描述：<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 17.75pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: -21pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none; mso-list: l0 level1 lfo1; tab-stops: list 17.75pt;"><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">1、<span style="FONT: 7pt "Times New Roman";"> </span></span></span><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman";">网络布线</span></b><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman";">，网线是连接计算机与控制器通道，门禁系统采用的网线为四芯带屏蔽双绞线，线芯直径与标准五类双绞线一样，也可采用直径相当的多芯带屏蔽信号电缆。计算机与控制器之间的信息交换必须要经过网线的传递，信息在网络的传递过程中可能受到各种各样的干扰，轻则造成信息传递失误、读卡速度变慢，重则造成整个网络的不通，因此网线在布置及连接时必须要按照一定的规则进行，尽可能的降低干扰对系统的影响。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt -3.25pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none;"><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman";"><span style="mso-spacerun: yes;"> </span></span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman";">另外在容易发生雷击的地区必须考虑到防雷措施。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt -3.25pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none;"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman";">以下是经过实践检验行之有效的方法：<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt -3.25pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none;"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman"; mso-no-proof: yes;">①</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman";">、布线时尽量避开电力电缆。（防干扰）<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt -3.25pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none;"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman"; mso-no-proof: yes;">②</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman";">、布线时尽量避免架空线、架高线。（防雷击）<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt -3.25pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none;"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman"; mso-no-proof: yes;">③</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman";">、尽量采用整根网线，不要用短线拼凑，减少接线点。（防干扰）<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt -3.25pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none;"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman"; mso-no-proof: yes;">④</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman";">、网线的分线点在互连时要仔细认真，每个接点都要采用锡焊，尤其注意的是<u>网线的屏蔽层必须要互连（防干扰）</u>，而且要焊接可靠，互连的规则是尽量采用同色线相连。每个接点焊好后要用绝缘胶布包扎，尤其要注意不同的信号线不能短路。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt -3.25pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none;"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman"; mso-no-proof: yes;">⑤</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-hansi-font-family: "Times New Roman";">、网线的屏蔽层一般不要接大地，除非其它措施都不灵，网络无论如何调不通或网上的干扰太大系统不能稳定工作，这个时候才考虑屏蔽层接大地，但这样做系统被雷击的概率会大大增加，所以一般不能把屏蔽层接大地。（防雷击）（可能有人不信，但最好不要去试，以免造成器件的损坏）。<span lang="EN-US"><p></p></span></span></p>
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