Q:An accurate calculation formula for monitoring the focal length and actual distance of the lens

While the use of long focal length lens can see the car's license number (the car occupies most of the area on the screen), but can not monitor the entire car park

Q:960P HD network camera stored one day more G?

To see the set of the stream to 2M of the stream to count, 2M * 60 * 60 * 24 ÷ 8 = 21600M = 21.6G

Q:How is the general surveillance camera connected to the computer?

(2) Remove the screws from the video capture card box, the video capture card fixed in the chassis, as shown in Figure 1.26.

Q:What kind of surveillance camera is good

According to your workshop size 8mm focal length, CCD1 / 3 inch camera almost, other parameters of course, the higher the better, but the price is higher, better international brand cameras have sony, Panasonic, Sharp, WATEC, etc. With the small, Shenzhen Weizi seems okay; I use the WATEC with 8mm, computar lens, the effect is good, the price of your side, a set of about 2800

Q:HD camera is said that his clarity, infrared camera is that it's night vision function, in order to highlight the main features of the name of a

3, PTZ is able to drive around the camera, up and down the rotation of the equipment, with it, you can achieve all-round camera within the classroom. In general, a fixed camera, can only see the classroom about 60% of the students, and the use of PTZ cameras can see the classroom in all directions and podium, blackboard. It can be mounted on a wall or ceiling. Selection of JIYEL produced JY-8009 indoor indoor pan / tilt, with a small size, beautiful appearance.

Q:Monitor the top ten cameras

Followed by: Hikvision as D-Link Dahua Dili as Sony Sony Sony Ithink Iceland as worry

Q:A camera for an hour how much space

This depends on the camera to shoot the quality of the picture, give you a camera 130W, each picture is 30K look, the picture is 10 Zhen, then every 10 is the screen, that is 300K, 1 hour 3600 seconds , Take out 1080000KB to remove 1024, that is, 1G look like

Q:57 Road 1080P surveillance video requirements to store a month, how much hard disk space?

A camera according to the compression of an hour is roughly 2.2G, 2.2 by 24 hours 53G * 57 cameras more than 3000 G, 30 days 91000G or so, that is to say about 91T hard drive, HD quite occupied hard disk, 720P basic small half,

Q:Home wireless surveillance camera price, how much money?

Often someone asked me: how much money is home monitoring equipment? And so on, in fact, how can I answer? Also published before the relevant home monitoring equipment prices related articles, but the expression is not very clear, too simple, and some friends still do not understand. Today for two different monitoring system to do a detailed overview.

Q:What is the power of the camera used for monitoring?

If all of the moving point, then the power supply per set of AC24V / 2A, each 50W, 31 * 50 = 1550W, that RVV2 * 0.75 power cord is not enough.