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zoomIn"><span>时间：2022-04-29</span><span>浏览数：1714</span></div> <div class="cpli11 animated zoomIn"> <p> <p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff">开关传感器是一种简单、可靠的传感器，也是一种*廉价的传感器，广泛应用于安防技术中。它可以将压力、磁场或位移等在入侵行为发生时所产生的物理量转化为传感器内部电路的“开”和“关”两种电信号。</p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff">压力传感器</p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff">压力传感器把传感器上受到的压力变化转换为相应的电量变化，经过放大成为电信号。某些晶体材料，当某方向受到外力作用时，其内部就会产生极化现象，在某方向两个表面上产生正负电荷，当作用力改变时，电荷的大小和极性随之改变，晶体所产生的电荷量大小和极性随之改变，晶体所产生的电荷量大小与外力的大小成正比，这种现象称正压电效应。反之某些晶体加一交变电场，晶体将产生机械变形，这种现象称逆压电效应。</p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff"><br></p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff"><br></p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff"><br></p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff">声传感器</p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff">入侵事件发生时，总会有说话、走动、击碎玻璃、锯钢筋等声音发生，能够把这些声音信号转换成一定电量的传感器都称为声传感器。</p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff">声音为一种机械波，声音的传播是机械波在媒质中传播的过程。当声波频率在20Hz～20kHz时人耳能接收到，称为可闻声波。当频率低于20Hz时称为次声波，高于20kHz时称为超声波，次声波和超声波人耳均听不到。</p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff"><br></p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff"><br></p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff"><br></p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff">磁电传感器</p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff">磁电式传感器俗称“动圈式传感器”，它是由一个固定磁场和在这磁场中可作垂直轴向运动的线圈组成，线圈安装在一个振动膜上，振动膜在声强的作用下运动，带动线圈在固定的磁场中作切割磁力线的运动。</p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff"><br></p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff"><br></p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff"><br></p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff">光电传感器</p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff">光电传感器是指能够将可见光转换成某种电量的传感器。光敏二极管是*常见的光传感器。</p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff">热电传感器</p><p style="box-sizing:border-box;font-family:"margin-top:16px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:16px;line-height:1.4em;vertical-align:baseline;color:#7b7b7b;background-color:#ffffff">热电传感器是一种将热量变化转换为电量变化的一种能量转换器件。热释电红外线元件是一种典型的热量传感器。</p><br /><a href="http://www.enfionsh.com/">http://www.enfionsh.com</a> </p> </div> <div class="paging_prev animated zoomIn"><span>上一篇：</span><a href="/shop/cpzs/18907860.html">传感器特性</a></div> </div> </div> <div class="foot2"> <ul class="foot2nr"> <li class="foot2wz animated zoomIn"> 您是第<font face="01 Digit"><b>6892684</b></font>位访客<br> 版权所有 ©2024-11-28 <a href="https://beian.miit.gov.cn/" target="_blank" rel="nofollow"></a> <a id="PageFoot_hlCompany" class="red" href="/" title="上海盈沣元器件有限公司" rel="nofollow">上海盈沣元器件有限公司</a> 保留所有权利.<br /> 地址：上海市徐汇区徐家汇街道徐家汇<br /> 技术支持： <a href="http://www.b2b168.com/" target="_blank" rel="nofollow">八方资源网</a> <a href="http://www.b2b168.com/ad/legal.htm" 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