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门禁/对讲/一卡通
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解析门禁系统主要组成 更新中...

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ltcx95 发布于: 2008-5-23 16:58 652 次浏览 10 位用户参与讨论
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<p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 0pt;">身份识别单元部分</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"><p></p></span></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 0pt;">身份识别单元部分是门禁系统的重要组成部分,起到对通行人员的身份进行识别和确认的作用,实现身份识别的方式和种类很多,主要有卡证类身份识别方式、密码类识别方式、生物识别类身份识别方式以及复合类身份识别方式。表</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; mso-font-kerning: 0pt;"><font face="Times New Roman">1</font></span><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 0pt;">对各种身份识别方式进行了比较。</span></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 0pt;"></span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"><p></p></span></p><p></p><p></p><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">一般来说,应该首先需要对所有需要安装的门禁点进行安全等级评估,以确定恰当的安全性,安全性分为几个等级,如:一般、特殊、重要、要害等级别,对于每一种安全级别我们可以设计一种身份识别的方式。例如:一般场所可以使用进门读卡器、出门按钮方式;特殊场所可以使用进出门均需要刷卡的方式;重要场所可以采用进门刷卡加乱序键盘、出门单刷卡的方式;要害场所可以采用进门刷卡加指纹加乱序键盘、出门单刷卡的方式。这样可以使整个门禁系统更具有合理性和规划性,同时也充分保障了较高的安全性和性价比。</span></p><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">资料来源:<a href="http://www.95px.com/"><strong>www.95px.com</strong></a></span></p><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"></span></p>
[此贴子已经被作者于2008-5-23 17:01:12编辑过]

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ltcx95 发表于 2008-5-23 16:59:00
<p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 0pt;">处理与控制单元部分</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"><p></p></span></p><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">处理与控制设备部分通常是指门禁系统的控制器,门禁控制器是门禁系统的中枢,就像人体的大脑一样,里面存储了大量相关人员的卡号、密码等信息,这些资料的重要程度是显而易见的。另外,门禁控制器还负担着运行和处理的任务,对各种各样的出入请求做出判断和响应,其中有运算单元、存储单元、输入单元、输出单元、通讯单元等组成。它是门禁系统的核心部分,也是门禁系统最重要的部分,如果希望规划一个安全和可靠的门禁系统,则首先必须需要选择更安全、更可靠的门禁控制器。</span></p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:宋体;mso-hansi-font-family:'mso-ansi-language:en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">资料来源:<a href="http://www.95px.com/" target="_blank"><strong><font color="#004f97">www.95px.com</font></strong></a></span></p><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:宋体;mso-hansi-font-family:'mso-ansi-language:en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;"></span></p><p><br/></p></span>
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ltcx95 发表于 2008-5-23 17:04:00
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-SIZE: 16pt; COLOR: #ff99cc;"><font face="Times New Roman">http://www.95px.com<p></p></font></span></b></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 15pt; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><b><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #0099ff; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;">&nbsp;<p></p></span></b></p><p><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">北京市朝阳区龙腾畅晓培训学校</span></b></p><p><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">电视监控系统集成师、</span></span></b></p><p><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">安防系统集成师、</span></span></b></p><p><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">安防系统集成项目经理、</span></span></b></p><p><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">智能建筑弱电系统集成师、</span></span></b></p><p><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">智能建筑弱电项目经理、</span></span></b></p><p><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span style="FONT-SIZE: 12pt; COLOR: blue; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">楼宇自控系统集成师</span></span></b></p>
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ltcx95 发表于 2008-5-23 17:08:00
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-SIZE: 16pt; COLOR: #ff99cc;"><font face="Times New Roman">http://www.95px.com <p><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:'mso-hansi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">北京市朝阳区龙腾畅晓培训学校</span></p><p><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:'mso-hansi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">信产部专项技术认证证书</span></p></font></span></b></p><p><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:'mso-hansi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">北京市朝阳区龙腾畅晓培训学校</span></p><p><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:'mso-hansi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">信产部专项技术认证证书</span></p>
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ltcx95 发表于 2008-5-29 16:54:00
<p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: &quot;Times New Roman&quot;;">影响门禁控制器的安全性的因素很多,通常表现在以下几个方面:</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"><p></p></span></p><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;">控制器的分布:控制器必须放置在专门的弱电间或设备间内集中管理,控制器与读卡器之间具有远距离信号传输的能力,不能使用通用的</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US;">Wiegand</span><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;">协议,因为</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US;">Wiegand</span><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;">协议只能传输几十米的距离,这样就要求门禁控制器必须离读卡器就近放置,大大不利于控制器的管理和安全保障。设计良好的控制器与读卡器之间的距离应不小于</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US;">1200</span><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;">米,控制器与控制器之间距离也应不小于</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US;">1200</span><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;">米;</span></p><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:宋体;mso-hansi-font-family:'mso-ansi-language:en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">资料来源:<a href="http://www.95px.com/" target="_blank"><strong><font color="#004f97">www.95px.com</font></strong></a></span></span></p>
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6#
ltcx95 发表于 2008-5-29 16:55:00
<p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: &quot;Times New Roman&quot;;">控制器的防破坏措施:</span></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: &quot;Times New Roman&quot;;">控制器机箱必须具有一定的防砸、防撬、防爆、防火、防腐蚀的能力,尽可能阻止各种非法破坏的事件发生;</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"><p></p></span></p><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;">控制器的电源供应:</span></p><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;">控制器内部本身必须带有</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US;">UPS</span><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;">系统,在外部的电源无法提供时,至少能够让门禁控制器继续工作几个小时,以防止有人切断电源从而导致门禁瘫痪的事件;</span></p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;"><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:宋体;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-hansi-font-family:'mso-ansi-language:en-us;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:宋体;mso-hansi-font-family:'mso-ansi-language:en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">资料来源:<a href="http://www.95px.com/" target="_blank"><strong><font color="#004f97">www.95px.com</font></strong></a></span></span></p></span>
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7#
ltcx95 发表于 2008-5-29 16:56:00
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-SIZE: 16pt; COLOR: #ff99cc;"><font face="Times New Roman">http://www.95px.com <p><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:'mso-hansi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">北京市朝阳区龙腾畅晓培训学校</span></p><p><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:'mso-hansi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">信产部专项技术认证证书</span></p></font></span></b></p><p><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:'mso-hansi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">北京市朝阳区龙腾畅晓培训学校</span></p><p><span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:'mso-hansi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">信产部专项技术认证证书</span></p>
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8#
ltcx95 发表于 2008-6-3 16:44:00
<p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: &quot;Times New Roman&quot;;"><font size="3">控制器的报警能力:</font></span></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><font size="3"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: &quot;Times New Roman&quot;;">控制器必须具有各种即时报警的能力,如电源、</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; mso-font-kerning: 0pt;">UPS</span><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: &quot;Times New Roman&quot;;">等各种设备的故障提示,机箱被打开的警告信息,以及通讯或线路故障等等;</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"><p></p></span></font></p><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;"><font size="3">开关量信号的处理:</font></span></p><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;"><font size="3">门禁控制器不能直接使用开关量信号,门禁系统中有许多信号会以开关量的方式输出,例如门磁信号和出门按钮信号等,由于开关量信号只有短路和开路两种状态,所以很容易遭到利用和破坏,会大大降低门禁系统整体的安全性。</font></span></p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;"><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:宋体;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-hansi-font-family:'mso-ansi-language:en-us;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:宋体;mso-hansi-font-family:'mso-ansi-language:en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">资料来源:<a href="http://www.95px.com/" target="_blank"><strong><font color="#004f97">www.95px.com</font></strong></a></span></span></p></span>
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9#
ltcx95 发表于 2008-6-3 16:45:00
<p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: &quot;Times New Roman&quot;;">影响门禁控制器的稳定性和可靠性的因素也非常多,通常表现在以下几个方面:</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"><p></p></span></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: &quot;Times New Roman&quot;;">设计结构:</span></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: &quot;Times New Roman&quot;;">门禁控制器的整体结构设计是非常重要的,设计良好的门禁系统将尽量避免使用插槽式的扩展板,以防止长时间使用而氧化引起的接触不良;使用可靠的接插件,方便接线并且牢固可靠;元器件的分布和线路走向合理,减少干扰,同时增强抗干扰能力;机箱布局合理,增强整体的散热效果。门禁控制器是一个特殊的控制设备,不应该一味追求使用最新的技术和元件。控制器的处理速度不是越快就越好,也不是门数越集中就越好,而是必须强调稳定性和可靠性,够用且稳定的门禁控制器才是好的控制器;</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"><p></p></span></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: &quot;Times New Roman&quot;;">电源部分:</span></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: &quot;Times New Roman&quot;;">电源是门禁控制器中非常重要的部分,提供给元器件稳定、干净的工作电压是稳定性的必要前提,但</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; mso-font-kerning: 0pt;"><font face="Times New Roman">220</font></span><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: &quot;Times New Roman&quot;;">伏特的市电经常不稳定,可能存在电压过低、过高、波动、浪涌等现象,这就需要电源具有良好的滤波和稳压的能力。此外电源还需要有很强的抗干扰能力,所谓干扰包括高频感应信号、雷击等。</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"><p></p></span></p><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;">控制器内部的不间断电源也是很必要的,并且不间断电源必须放置在控制器机箱的内部,保证不能轻易被切断或破坏;</span></p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;"><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:宋体;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-hansi-font-family:'mso-ansi-language:en-us;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:宋体;mso-hansi-font-family:'mso-ansi-language:en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">资料来源:<a href="http://www.95px.com/" target="_blank"><strong><font color="#004f97">www.95px.com</font></strong></a></span></span></p></span>
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10#
ltcx95 发表于 2008-6-19 16:11:00
<p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;">控制器的程序设计:</span></p><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;">&nbsp;&nbsp;&nbsp; 相当多的门禁控制器在执行一些高级功能或与其它弱电子系统实现联动时,完全依赖计算机及软件来实现的,由于计算机是非常不稳定的,这可能意味着一旦计算机发生故障时会导致整个系统失灵或瘫痪。所以设计良好的门禁系统中所有的逻辑判断和各种高级功能的应用,必须依赖门禁控制器的硬件系统来完成,也就是说必须由控制器的程序来实现,只有这样,门禁系统才是最可靠的,并且也有最快的系统响应速度,而且不会随着系统的不断扩大而降低整个门禁系统的响应速度和性能;</span></p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;"><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:宋体;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-hansi-font-family:'mso-ansi-language:en-us;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:宋体;mso-hansi-font-family:'mso-ansi-language:en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">资料来源:<a href="http://www.95px.com/" target="_blank"><strong><font color="#004f97">www.95px.com</font></strong></a></span></span></p></span>
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11#
ltcx95 发表于 2008-6-19 16:12:00
<p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;">继电器的容量:</span></p><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;">&nbsp;&nbsp;&nbsp; 门禁控制器的输出是由继电器控制的。控制器工作时,继电器要频繁的开合,而每次开合时都有一个瞬时电流通过。如果继电器容量太小,瞬时电流有可能超过继电器的容量,很快会损坏继电器。一般情况继电器容量应大于电锁峰值电流</span><span lang="EN-US" style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ansi-language: EN-US; mso-fareast-font-family: 宋体;">3</span><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;">倍以上。另外继电器的输出端通常是接电锁等大电流的电感性设备,瞬间的通断会产生反馈电流的冲击,所以输出端宜有压敏电阻或者反向二极管等元器件予以保护;</span></p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: 宋体; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: &quot;Times New Roman&quot;; mso-ansi-language: EN-US;"><p><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:宋体;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-hansi-font-family:'mso-ansi-language:en-us;"><span style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-bidi-font-family:宋体;mso-hansi-font-family:'mso-ansi-language:en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;">资料来源:<a href="http://www.95px.com/" target="_blank"><strong><font color="#004f97">www.95px.com</font></strong></a></span></span></p></span>
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