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       <h1 class="biaoti">防爆监控摄像机的常见问题解答</h1>
       <div class="fabiao">更新时间：2022-10-27&nbsp;&nbsp;|&nbsp;&nbsp;点击率：936</div>
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       &nbsp;<span style="font-size: 12px;">　　监控摄像机是安防监控工程中bi不可少</span>的一个设备，其为了能够很好的保护我们生活中安全生产，其借助互联网的发展为我们的生活带来了极大的贡献。其实现对施工现场的动态、实时管理;对施工现场的安全生产、文明施工、消防保卫等情况进行有效监控。现在为了加强人们对建筑工地的管理，很多城市现在已经在建筑工地上面安装了许多监控设备。<div><span style="font-size: 12px;">　　下面是防爆监控摄像机的常见问题解答：</span></div><div><span style="font-size: 12px;">　　一．无图像：</span></div><div><span style="font-size: 12px;">　　1．检查电源是否接好，电源电压是否满足要求（电源误差：DC12V+10% AC24V+5%）；</span></div><div><span style="font-size: 12px;">　　2．BNC头或视频电缆是否接触良好；</span></div><div><span style="font-size: 12px;">　　3．镜头自动光圈是否打开；</span></div><div><span style="font-size: 12px;">　　4．视频或直流驱动的自动光圈镜头控制线是否对地短路；</span></div><div><span style="font-size: 12px;">　　5．检查视频是否漏电导致CCD板机视频一路烧坏；</span></div><div><span style="font-size: 12px;">　　二．图像质量不好：</span></div><div><span style="font-size: 12px;">　　1．镜头是否有指纹或太脏；</span></div><div><span style="font-size: 12px;">　　2．光圈是否调好；</span></div><div><span style="font-size: 12px;">　　3．视频电缆接触不良；</span></div><div><span style="font-size: 12px;">　　4．电子快门或白平衡设置是否有问题；</span></div><div><span style="font-size: 12px;">　　5．传输距离是否太远；</span></div><div><span style="font-size: 12px;">　　6．电压是否正常；</span></div><div><span style="font-size: 12px;">　　7．附近是否有干扰源；</span></div><div><span style="font-size: 12px;">　　8．在电梯里安装时要与电梯保证绝缘免受干扰；</span></div><div><span style="font-size: 12px;">　　9．镜头焦距是否没有调好；</span></div><div><span style="font-size: 12px;">　　10.板机的CCD是否不平；</span></div><div><span style="font-size: 12px;">　　11.检查镜头是C式接口还是CS式接口，要是C式接口必须加上接圈、若是CS式接口就去掉接圈；</span></div><div><span style="font-size: 12px;">　　三.红外机夜视效果差、有光圈、白天图像正常： `</span></div><div><span style="font-size: 12px;">　　1．检查红外灯是否亮度不够；</span></div><div><span style="font-size: 12px;">　　2．检查镜头套与镜头的距离是否太大</span></div><div><span style="font-size: 12px;">　　3．红外灯与镜头是否匹配（详细资料请查看参考表）</span></div><div><span style="font-size: 12px;">　　4．检查红外灯是否起动；</span></div><div><span style="font-size: 12px;">　　5．检查CCD板机或镜头是否感红外；</span></div><div><span style="font-size: 12px;">　　6．检查周围环境有无反射物或使用的空间范围是否很小；</span></div><div><span style="font-size: 12px;">　　7．检查机子的有效红外距离与实际使用的距离是否相应</span></div><div><span style="font-size: 12px;">　　四．图像时有时无：</span></div><div><span style="font-size: 12px;">　　1．电源电压供应是否稳定；</span></div><div><span style="font-size: 12px;">　　2．视频线是否松动接头是否牢固；</span></div><div><span style="font-size: 12px;">　　3．视频内部是否接触良好；</span></div><div><span style="font-size: 12px;">　　4．电源线是否有断线、接触不良</span></div><div><span style="font-size: 12px;">　　五．画面出现几道黑色坚条或横条混动：</span></div><div><span style="font-size: 12px;">　　这种情况一般是机子供电电源输出电压的纹波太大或机子供电电压偏低太多造成；</span></div><div><span style="font-size: 12px;">　　六.图像出现扭曲或几何失真：</span></div><div><span style="font-size: 12px;">　　1.检查所用光学镜头是否异常；</span></div><div><span style="font-size: 12px;">　　2.监视器的输出阻抗开关是否设置在75欧端；</span></div><div><span style="font-size: 12px;">　　3.检查所用视频连接线缆阻抗是否是75欧；</span></div><div><span style="font-size: 12px;">　　七．红外一体化摄像机在白天时工作正常晚上无图像：</span></div><div><span style="font-size: 12px;">　　是电源的功率达不到要求所致，因为红外一体机在白天工作时与普通摄像机无异，但到晚上时红外灯处于工作状态，工作电流突然变大；</span></div><div><span style="font-size: 12px;">　　八．一体化摄像机不能自动聚焦：</span></div><div><span style="font-size: 12px;">　　1．检查一体化摄像机的聚焦状态是在键控优先还是在自动聚焦状态；</span></div><div><span style="font-size: 12px;">　　2．周围环境光线过亮致使摄像机亮度值过高摄像机无法找到聚焦点；</span></div><div><span style="font-size: 12px;">　　九.图像出现黑白无彩：</span></div><div><span style="font-size: 12px;">　　1．视频线太长导致视频信号衰减太大；</span></div><div><span style="font-size: 12px;">　　2．监视器调到黑白状态；</span></div><div><span style="font-size: 12px;">　　3．CCD板机的晶振荡频率超出范围；</span></div><div><span style="font-size: 12px;">　　4．CCD板机程序软件的色彩数值调得太小导致其色彩几乎显示不出来。</span></div><div><span style="font-size: 12px;">　　十．一体化摄像机在变倍时突然重启或图像过一段时间后无图：</span></div><div><span style="font-size: 12px;">　　因为一体化摄像机对电源要求比较高，在变倍时由于要驱动马达，工作电流突然增大，这样会导致供电不足的解码器（板）供应不过来导致摄像机突然断电；</span></div><div><span style="font-size: 12px;">　　十一．像发白有雾状：</span></div><div><span style="font-size: 12px;">　　1．检查机子内部是否有水雾；</span></div><div><span style="font-size: 12px;">　　2．检查镜头套是否玻璃紧贴；</span></div><div><span style="font-size: 12px;">　　3．检查机子是否有装镜头套；</span></div><div><span style="font-size: 12px;">　　4．检查板机的CCD里面是否有水雾；</span></div><div><span style="font-size: 12px;">　　5．检查机子的电子快门是否打开（若打开就将其关掉）；</span></div><div><span style="font-size: 12px;">　　6．检查红外灯板与镜头是否平行（即红外灯与镜头存在一定角度）；</span></div><div><span style="font-size: 12px;">　　7．图检查镜头是否比镜头套高、刚好一样高（一般情况是镜头套要比镜头高出3-4毫米）；</span></div>
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