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Planning and Function security monitoring system
Editor:admin Date:2015/8/8 Click
In the 21st century, it is widely used security monitoring system greatly contributed to the social modernization. So what security monitoring system? Security monitoring system refers to the application of fiber, coaxial cable or microwave transmission of video signals in its closed loop, and constitutes a complete system independent from the camera to the image display and recording. It real-time image, a true reflection of the object being monitored and recorded through a VCR. Next, we'll do some analysis functions outlined for planning and security monitoring system to readers.
1. camera. Generally it comes to the camera, it is natural to think of home video cameras. In fact, surveillance cameras and home video camera with many different, starting with the fundamental design criteria are different, one is designed for industrial applications, one designed for home use, they work in a long time, the operating environment The requirement is very different; the volume monitor with the machine compact, but because of all the control console and tape all part housed in the same chassis, so the volume is much large, and must be on-site manual control, remote remote control can not be achieved ; on the critical resolution, the console generally around the level of 300 lines, and monitor with the machine to clean the blackboard on the blackboard subject, the horizontal resolution of 400 lines or more should.
2. The lens is fixed focus lens and zoom points. Variable focal length lens, you can zoom in or zoom out the scene, to achieve several times zoom effect, you can use it on the blackboard blackboard clearly under the photo can also be taken in the classroom at the whole picture, focusing head can not be achieved This function. Equipped with a lens for the electric three variable lens can zoom, focus and iris adjustment. Zoom closer to push away the screen, changing the viewing angle and image size; adjust the focus and aperture, adjust the image clarity. In the classroom can be a teacher or a student's big picture definition real freeze on the entire screen, the image can also be pushed to the class situation.
