你知道摄像机一共有5种供电方式吗？
<section data-role="outer" label="Powered by 135editor.com" style="font-size:16px;font-family:微软雅黑;"><section data-role="outer" label="Powered by 135editor.com"><section data-role="paragraph" class="_135editor" style="border-width: 0px;border-style: none;border-color: initial;box-sizing: border-box;"><section class="_135editor" data-tools="135编辑器" data-id="93976" style="border-width: 0px;border-style: none;border-color: initial;box-sizing: border-box;"><section style="padding: 0.6em;box-sizing: border-box;"><section style="padding-right: 4px;padding-left: 4px;box-sizing: border-box;"><section style="box-shadow: #e5e5e5 1px 1px 6px;border-bottom-left-radius: 15px;border-bottom-right-radius: 15px;background: #fefefe;box-sizing: border-box;"><section style="padding: 1em 1.4em 1em 0.6em;box-shadow: rgb(229, 229, 229) -1px 1px 6px;border-bottom-left-radius: 15px;border-bottom-right-radius: 15px;background: url("https://mmbiz.qpic.cn/mmbiz_png/p8CaKzvQibq6fD4PM1vDgHztkmPKVxVHcC4jHibvz9E5rPwzpRU9dEtUcibBpzwQePkiaQibozkRRibgaGJkxE7Mqaxw/640?wx_fmt=png") left bottom / 40% no-repeat;box-sizing: border-box;"><section style="border-top: 1px solid rgb(91, 113, 126);border-right: 1px solid rgb(91, 113, 126);border-left: none;border-bottom: none;box-sizing: border-box;"><section style="width: 22px;margin-top: -7px;background-image: initial;background-position: initial;background-size: initial;background-repeat: initial;background-attachment: initial;background-origin: initial;background-clip: initial;padding-top: 2px;padding-bottom: 2px;box-sizing: border-box;"></section><p style="padding: 0.7em 0.8em 1.2em 1em;font-size: 14px;letter-spacing: 1.5px;line-height: 1.75em;"><span style="color: #3d3d3d;letter-spacing: 1.2px;text-indent: 0em;background-color: initial;caret-color: red;">电源适配器主要用于给摄像机、护罩等产品供电，</span><span style="color: #3d3d3d;letter-spacing: 1.2px;text-indent: 0em;background-color: initial;caret-color: red;">海康摄像机常用的电源有DC12V直流电源、AC24V交流电源、集中供电电源、PoE供电器、PoE分离器等，今天康康将为大家介绍这几种不同的供电设备，赶紧学起来吧~</span></p></section><section style="text-align: right;margin-top: -9px;"><section style="width:50%;display: inline-block;" data-width="50%"><section style="width:100%;height: 1px;background:#5b717e;" data-width="100%"></section><section style="width: 22px;background-image: initial;background-position: initial;background-size: initial;background-repeat: initial;background-attachment: initial;background-origin: initial;background-clip: initial;margin-top: -5px;padding-top: 2px;padding-bottom: 2px;box-sizing: border-box;"></section></section></section></section></section></section></section></section><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;"><br></p><section class="_135editor" data-tools="135编辑器" data-id="94151" style="border-width: 0px;border-style: none;border-color: initial;box-sizing: border-box;"><section style="text-align: center;padding-top: 1em;padding-bottom: 1em;box-sizing: border-box;"><section style="display: flex;justify-content: center;align-items: center;"><section style="display: flex;justify-content: flex-end;margin-top: -12px;"><section style="display: inline-block;width: 0.4em;height: 5px;background: #fee722;border-radius: 5px;margin-right: 3px;box-sizing: border-box;"></section><section style="display: inline-block;width: 0.9em;height: 5px;background: #fee722;border-radius: 5px;margin-right: -5px;box-sizing: border-box;"></section></section><section style="width: 1.8em;height: 5px;background: #fee722;border-radius: 5px;margin-top: 8px;margin-left: -1.6em;box-sizing: border-box;"></section><section style="display:inline-block;"><section class="135brush" data-brushtype="text" style="background: rgb(251, 239, 46);color: rgb(152, 99, 0);letter-spacing: 1.5px;padding: 10px 1.6em;transform: rotate(0deg);">直流/交流/集中供电设备</section><section data-bgless="spin" data-bglessp="280" data-bgopacity="80%" style="width:100%;background:rgba(251,239,46,0.3);height: 40px;margin-top: -34px;margin-left:6px;" data-width="100%"></section></section><section style="display: flex;justify-content: flex-end;margin-top: -12px;"><section style="display: inline-block;width: 0.4em;height: 5px;background: #fee722;border-radius: 5px;box-sizing: border-box;"></section><section style="display: inline-block;width: 0.9em;height: 5px;background: #fee722;border-radius: 5px;margin-left: 3px;box-sizing: border-box;"></section></section><section style="width: 1.2em;height: 5px;background: #fee722;border-radius: 5px;margin-top: 8px;margin-left: -1.6em;box-sizing: border-box;"></section></section></section></section><section class="_135editor" data-tools="135编辑器" data-id="93475" style="border-width: 0px;border-style: none;border-color: initial;box-sizing: border-box;"><section style="margin: 10px 0%;box-sizing: border-box;"><section data-width="100%" style="display: inline-block;width: 100%;vertical-align: top;padding: 1px;background-image: url("https://mmbiz.qpic.cn/mmbiz_jpg/p8CaKzvQibq6fD4PM1vDgHztkmPKVxVHc2ZcLxWF6qZHRbicUrcBn1sXc0rPoGujzcicVlA2OZNmXibcgNnpgEWKHQ/640?wx_fmt=jpeg");background-position: 25.1773% -46.621%;background-repeat: repeat;background-size: 28.0399%;background-attachment: scroll;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section style="margin: -1px 0%;box-sizing: border-box;transform: translate3d(20px, 0px, 0px);-webkit-transform: translate3d(20px, 0px, 0px);-moz-transform: translate3d(20px, 0px, 0px);-o-transform: translate3d(20px, 0px, 0px);"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;background-color: #ffffff;box-shadow: #000000 0px 0px 0px;box-sizing: border-box;"><section style="box-sizing: border-box;"><section style="text-align: center;padding-right: 8px;padding-left: 8px;color:#3f3f3f;box-sizing: border-box;" class="135brush" data-brushtype="text">直流/交流电源重要参数</section></section></section></section></section></section></section><ul class=" list-paddingleft-2" style="list-style-type: square;"><li><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;">输出规格：输出电压、电流、输出接口（圆口或两线） </p></li><li><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;">形态：包括插墙式、两端带线式、桌面式</p></li><li><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;">线长：输入或输出线长 </p></li><li><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;">输出线径 </p></li><li><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;">尺寸</p></li></ul><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;"><span style="letter-spacing: 1.2px;">注意：桌面式电源/宽压电源需要单独搭配电源线使用</span></p><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;"><span style="letter-spacing: 1.2px;"><br></span></p><section class="_135editor" data-tools="135编辑器" data-id="93475" style="border-width: 0px;border-style: none;border-color: initial;box-sizing: border-box;"><section style="margin: 10px 0%;box-sizing: border-box;"><section data-width="100%" style="display: inline-block;width: 100%;vertical-align: top;padding: 1px;background-image: url("https://mmbiz.qpic.cn/mmbiz_jpg/p8CaKzvQibq6fD4PM1vDgHztkmPKVxVHc2ZcLxWF6qZHRbicUrcBn1sXc0rPoGujzcicVlA2OZNmXibcgNnpgEWKHQ/640?wx_fmt=jpeg");background-position: 25.1773% -46.621%;background-repeat: repeat;background-size: 28.0399%;background-attachment: scroll;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section style="margin: -1px 0%;box-sizing: border-box;transform: translate3d(20px, 0px, 0px);-webkit-transform: translate3d(20px, 0px, 0px);-moz-transform: translate3d(20px, 0px, 0px);-o-transform: translate3d(20px, 0px, 0px);"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;background-color: #ffffff;box-shadow: #000000 0px 0px 0px;box-sizing: border-box;"><section style="box-sizing: border-box;"><section style="text-align: center;padding-right: 8px;padding-left: 8px;color:#3f3f3f;box-sizing: border-box;" class="135brush" data-brushtype="text">电源分类</section></section></section></section></section></section></section><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;"><span style="letter-spacing: 1.2px;text-indent: 0em;caret-color: red;">插墙式电源 </span></p><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;"><span style="letter-spacing: 1.2px;text-indent: 0em;caret-color: red;"> </span></p><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;"><span style="letter-spacing: 1.2px;text-indent: 0em;caret-color: red;">两端带线式电源 </span></p><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;"><span style="letter-spacing: 1.2px;text-indent: 0em;caret-color: red;"></span></p><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;"><span style="letter-spacing: 1.2px;text-indent: 0em;caret-color: red;">桌面式电源</span></p><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;"></p><section data-role="paragraph" class="_135editor" style="border-width: 0px;border-style: none;border-color: initial;box-sizing: border-box;"><p><br></p></section><section class="_135editor" data-tools="135编辑器" data-id="93475" style="border-width: 0px;border-style: none;border-color: initial;box-sizing: border-box;"><section style="margin: 10px 0%;box-sizing: border-box;"><section data-width="100%" style="display: inline-block;width: 100%;vertical-align: top;padding: 1px;background-image: url("https://mmbiz.qpic.cn/mmbiz_jpg/p8CaKzvQibq6fD4PM1vDgHztkmPKVxVHc2ZcLxWF6qZHRbicUrcBn1sXc0rPoGujzcicVlA2OZNmXibcgNnpgEWKHQ/640?wx_fmt=jpeg");background-position: 25.1773% -46.621%;background-repeat: repeat;background-size: 28.0399%;background-attachment: scroll;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section style="margin: -1px 0%;box-sizing: border-box;transform: translate3d(20px, 0px, 0px);-webkit-transform: translate3d(20px, 0px, 0px);-moz-transform: translate3d(20px, 0px, 0px);-o-transform: translate3d(20px, 0px, 0px);"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;background-color: #ffffff;box-shadow: #000000 0px 0px 0px;box-sizing: border-box;"><section style="box-sizing: border-box;"><section style="text-align: center;padding-right: 8px;padding-left: 8px;color:#3f3f3f;box-sizing: border-box;" class="135brush" data-brushtype="text">电源选型</section></section></section></section></section></section></section><ul class=" list-paddingleft-2" style="list-style-type: square;"><li><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;"><span style="letter-spacing: 1.2px;text-indent: 0em;caret-color: red;">确认摄像机和护罩等设备的最大功率，并留出足够电源冗余，确定电源规格 </span><br></p></li><li><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;">关注供电距离，防止压降过大导致供电不足</p></li></ul><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;"><br></p><section class="_135editor" data-tools="135编辑器" data-id="94151" style="border-width: 0px;border-style: none;border-color: initial;box-sizing: border-box;"><section style="text-align: center;padding-top: 1em;padding-bottom: 1em;box-sizing: border-box;"><section style="display: flex;justify-content: center;align-items: center;"><section style="display: flex;justify-content: flex-end;margin-top: -12px;"><section style="display: inline-block;width: 0.4em;height: 5px;background: #fee722;border-radius: 5px;margin-right: 3px;box-sizing: border-box;"></section><section style="display: inline-block;width: 0.9em;height: 5px;background: #fee722;border-radius: 5px;margin-right: -5px;box-sizing: border-box;"></section></section><section style="width: 1.8em;height: 5px;background: #fee722;border-radius: 5px;margin-top: 8px;margin-left: -1.6em;box-sizing: border-box;"></section><section style="display:inline-block;"><section class="135brush" data-brushtype="text" style="background: rgb(251, 239, 46);color: rgb(152, 99, 0);letter-spacing: 1.5px;padding: 10px 1.6em;transform: rotate(0deg);">POE供电设备</section><section data-bgless="spin" data-bglessp="280" data-bgopacity="80%" style="width:100%;background:rgba(251,239,46,0.3);height: 40px;margin-top: -34px;margin-left:6px;" data-width="100%"></section></section><section style="display: flex;justify-content: flex-end;margin-top: -12px;"><section style="display: inline-block;width: 0.4em;height: 5px;background: #fee722;border-radius: 5px;box-sizing: border-box;"></section><section style="display: inline-block;width: 0.9em;height: 5px;background: #fee722;border-radius: 5px;margin-left: 3px;box-sizing: border-box;"></section></section><section style="width: 1.2em;height: 5px;background: #fee722;border-radius: 5px;margin-top: 8px;margin-left: -1.6em;box-sizing: border-box;"></section></section></section></section><section class="_135editor" data-tools="135编辑器" data-id="93475" style="border-width: 0px;border-style: none;border-color: initial;box-sizing: border-box;"><section style="margin: 10px 0%;box-sizing: border-box;"><section data-width="100%" style="display: inline-block;width: 100%;vertical-align: top;padding: 1px;background-image: url("https://mmbiz.qpic.cn/mmbiz_jpg/p8CaKzvQibq6fD4PM1vDgHztkmPKVxVHc2ZcLxWF6qZHRbicUrcBn1sXc0rPoGujzcicVlA2OZNmXibcgNnpgEWKHQ/640?wx_fmt=jpeg");background-position: 25.1773% -46.621%;background-repeat: repeat;background-size: 28.0399%;background-attachment: scroll;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section style="margin: -1px 0%;box-sizing: border-box;transform: translate3d(20px, 0px, 0px);-webkit-transform: translate3d(20px, 0px, 0px);-moz-transform: translate3d(20px, 0px, 0px);-o-transform: translate3d(20px, 0px, 0px);"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;background-color: #ffffff;box-shadow: #000000 0px 0px 0px;box-sizing: border-box;"><section style="box-sizing: border-box;"><section style="text-align: center;padding-right: 8px;padding-left: 8px;color:#3f3f3f;box-sizing: border-box;" class="135brush" data-brushtype="text">PoE中跨（PoE供电器）</section></section></section></section></section></section></section><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;"><span style="letter-spacing: 1.2px;text-indent: 0em;caret-color: red;">PoE中跨 （MIDSPAN） ，俗名：PoE供电器，PoE注射器，PoE供电盒子等。应用于普通交换机与网络终端设备之间，只具有给网线提供电源的功能，而不具有数据交换的功能</span></p></section><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;">目前海康仅有单口PoE供电器。<span style="letter-spacing: 1.2px;text-indent: 0em;caret-color: red;">应用拓扑：</span></p><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;"></p><section data-role="paragraph" class="_135editor" style="border-width: 0px;border-style: none;border-color: initial;box-sizing: border-box;"><p><br></p></section><section class="_135editor" data-tools="135编辑器" data-id="93475" style="border-width: 0px;border-style: none;border-color: initial;box-sizing: border-box;"><section style="margin: 10px 0%;box-sizing: border-box;"><section data-width="100%" style="display: inline-block;width: 100%;vertical-align: top;padding: 1px;background-image: url("https://mmbiz.qpic.cn/mmbiz_jpg/p8CaKzvQibq6fD4PM1vDgHztkmPKVxVHc2ZcLxWF6qZHRbicUrcBn1sXc0rPoGujzcicVlA2OZNmXibcgNnpgEWKHQ/640?wx_fmt=jpeg");background-position: 25.1773% -46.621%;background-repeat: repeat;background-size: 28.0399%;background-attachment: scroll;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section style="margin: -1px 0%;box-sizing: border-box;transform: translate3d(20px, 0px, 0px);-webkit-transform: translate3d(20px, 0px, 0px);-moz-transform: translate3d(20px, 0px, 0px);-o-transform: translate3d(20px, 0px, 0px);"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;background-color: #ffffff;box-shadow: #000000 0px 0px 0px;box-sizing: border-box;"><section style="box-sizing: border-box;"><section style="text-align: center;padding-right: 8px;padding-left: 8px;color:#3f3f3f;box-sizing: border-box;" class="135brush" data-brushtype="text">PoE分离器</section></section></section></section></section></section></section><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;"><span style="letter-spacing: 1.2px;text-indent: 0em;caret-color: red;">PoE分离器与PoE供电器是相对的。PoE供电器是将数据信号和电力合在一起，PoE分离器的工作过程正好相反，是将数据信号和电力分离。</span><br></p><p style="line-height: 1.9em;font-size: 14px;letter-spacing: 1.2px;color: rgb(61, 61, 61);text-indent: 0em;padding-top: 5px;padding-bottom: 5px;"></p><section class="_135editor" data-tools="135编辑器" data-id="94155" style="border-width: 0px;border-style: none;border-color: initial;box-sizing: border-box;"><section style="text-align: center;"><section style="display: inline-block;"><section style="width:6em;"></section></section></section></section><section class="V5" powered-by="xiumi.us" style="white-space: normal;box-sizing: border-box;"><section style="margin-top: 10px;margin-bottom: 10px;text-align: center;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;box-sizing: border-box;"></section></section></section><section class="V5" powered-by="xiumi.us" style="white-space: normal;box-sizing: border-box;"><section style="box-sizing: 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