门禁防区与视频监控系统联动设计

常用门禁防区只有报警作用，当值班人员赶到，犯罪分子已经逃离现场，侦破难度大；常用视频监控系统只能定点监控录像，且占用大量硬盘内存．本系统把硬盘录像机作为中央控制器将两者有效结合．正常情况下，高速球型摄像机360。全方位监控不录像，布防时间段内当房门打开或有人在门前活动时，及时联动高速球型摄像机转动镜头对准房门录像并保存，既能全面监控，又能重点防范．硬盘录像机只对报警状态录像，大大节约硬盘存储空间．

The design of integrated operation for access control zone and the video surveillance system

The common used access control zone was only used to give an alarm, so when the operator on du- ty arrived, the criminals have been run away, and it is difficult to detect and investigate. The common video surveillance system only does fix point video surveillance, which also take up a lot of memory and disk space. The proposed system combined the two together by using the digital video recorder as the central controlling center. Normally the high speed spherical camera does not record video, only at the deploying time when the door is opened or there are persons walking near the door, the high speed spherical camera is in integrated operation immediately and turns the camera and makes video recording, which can not only make overall monitoring, but also be on guard. The digital video recorder only records the alarming situation, which saves the memory and disk space.