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<div class="ss"><div><span>导读： </span>如何分析光电传感器的控制电路？光电传感器是一种能够将可见光信号转换为电信号的器件，也可称为光电器件，主要用于光控开关，光控照明，光控报警领域中，对各种可见光进行控制。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div><b> 如何分析光电<a href="http://sensor.oecr.com" target="_blank" class="relatedlink">传感</a>器的控制<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电路</a>？</b><span style="line-height: 1.8em;">光电传感器是一种能够将可见光信号转换为电信号的器件，也可称为光电器件，主要用于光控开关，光控<a href="http://light.oecr.com" target="_blank" class="relatedlink">照明</a>，光控报警领域中，对各种可见光进行控制。</span></div><div><br></div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201612/12/105658z7et2te3ge2xovg2.jpg" target="_blank"><img src="data/attachment/portal/201612/12/105658z7et2te3ge2xovg2.jpg"></a></p><p style="text-align: center;"><br></p></div><div style="text-align: center;">光电传感器的线路连接图</div><div style="text-align: center;"><br></div><div style="text-align: left;"><b style="line-height: 25.2px;"> 如何分析光电传感器的控制电路？</b></div><div style="text-align: left;"><b style="line-height: 25.2px;"><br></b></div><div> 从上图可看出该光电传感器采用的是光敏电阻器作为光电元件，光敏电阻器是一种对光敏感的元件，其电阻值随入射光线的强弱发生变化而变化。</div><div><span style="line-height: 1.8em;"><b><br></b></span></div><div><span style="line-height: 1.8em;"><b> <font color="#f00000">当环境光较强时，光电传感器RG的阻值较小，使可调电阻器RP与光电传感器RG处的分压值变低，不能达到双向触发二极管VD的触发电压值，双向触发二极管VD 截止，进而使双向了晶闸管VS也截止，照明灯EL熄灭。</font></b></span></div><div><span style="line-height: 1.8em;"><b><font color="#f00000"><br></font></b></span></div><div><b><font color="#f00000"> 当环境光较弱时，光电传感器RG的阻值变大，使可调电阻器RP与光电传感器RG处的分压值变高，随着光照强度的逐渐增强，光电传感器RG的阻值逐渐变大，当可调电阻器kP与光电传感器RG处的分压值达到双向触发二个极管VD的触发电压时，双向触发二极管VD导通，进而触发双向品闸管VS也导通，照明灯EL点亮。</font></b></div><div><b><br></b></div><div> 以上就是为大家分享的如何分析光电传感器的控制电路。请各位光电爱好者和从业者们好好学习一下。</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201612/12/105844j6bc6585al33glg9.jpg" target="_blank"><img src="data/attachment/portal/201612/12/105844j6bc6585al33glg9.jpg"></a></p><p style="text-align: center;"><br></p><p style="text-align: center;"><span style="line-height: 25.2px;">欢迎关注光电<a href="http://news.oecr.com" target="_blank" class="relatedlink">资讯</a>微信公众号，每天将由光电工程师<a href="http://club.oecr.com" target="_blank" class="relatedlink">社区</a>网站(oecr.com)编辑团队为您精选行业动态，科技资讯，技术解析，光电<a href="http://www.oecr.com/portal.php?mod=list&catid=62" target="_blank" class="relatedlink">科普</a>等精彩内容，欢迎交换友情链接</span><span style="line-height: 25.2px;">(</span><b style="line-height: 25.2px;"><a 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