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CCTV Systems
These are broken down into 2 basic systems. Analogue & Digital. Analogue systems are simply analogue cameras, which provide
video signal from the camera. There are an abundance of cameras of different sizes, types, and of course quality levels. There are
colour or black & white, some which are colour in normal light levels, but at low light levels, automatically switch to black
& white, and turn on some inbuilt Infra-Red lights so they can see in the dark. There are indoor versions, outdoor versions,
even underwater versions ! The Digital cameras are generally IP Cameras, which basically plug into your network (LAN) and provide the video in digital format.
If you can't physically wire into your LAN, then don't worry, as you can also get wireless verions. (Note that a wireless IP
CCTV camera usually needs to be supplied with power, so it is not truly wireless, but only refers to wireless networking - WiFi.) Once you get the video captured to your PC, you then need some software to make use of it. You can choose to simply provide the video to the internet, so that you can login from anywhere in the world & view the video from your camera(s), or go a bit more technical and have motion detection software, which monitors the camera(s) for changes, and will then capture a video clip of the action, or simply take some still images from the action. Most software will allow you configure what to do when it does detect motion, such as simply sound an alarm, capture the video to your PC's hard disk, upload the video/pictures to another computer or by ftp, email or sms you that it has detected movement, etc etc. The possibilities are endless. You can even (with suitable hardware) have a camera in your home that detects movement and moves the camera to follow the motion.
CCTV LinksDisclaimer : I have no connection with these companies - I find their websites very useful & informativeRF Concepts, UKSales of CCTV cameras & Associated parts
CCTV Cameras SCT Ltd, UKSales of CCTV cameras & related bits & pieces
SCT Main Page, with links to different sections IVIEW Cameras, UKSales of CCTV cameras & equipment
iviewcameras Main Page IPCCTVCameras, UKSales of IP CCTV cameras & equipmentDelta, PolandSales of CCTV equipment
Shop Main Page ZoneminderZoneMinder is intended for use in single or multi-camera video security applications, including commercial or home CCTV, theft prevention and child, family member or home monitoring and other domestic care scenarios. It supports capture, analysis, recording, and monitoring of video data coming from one or more video or network cameras attached to a Linux system. ZoneMinder also support web and semi-automatic control of Pan/Tilt/Zoom cameras using a variety of protocols. It is suitable for use as a diy home video security system and for commercial or professional video security and surveillance. It can also be integrated into a home automation system via X.10 or other protocols.If you're looking for a low cost CCTV system or a more flexible alternative to cheap DVR systems then why not give ZoneMinder a try? SoftwareAlthough there are plenty of software packages for purchase off the shelf, you can also go the GPL route and use something like Motion which does all the hard work for you. Its a software motion detection system, which montiors multiple CCTV cameras or webcams for chnages in the captured images, and if it detects a change in the picture, can then perform an action, like capture a short video clip of the action, and capture multiple still images, upload/copy them to another computer either in your home or on the internet, notify you by sms or email, sound an alarm, etc etc. MotionFrom the Motion site mentioned above, some examples of applications are : Some of motion's features include:
ZoneMinderZoneMinder the top Linux video camera security and surveillance solution. ZoneMinder is intended for use in single or multi-camera video security applications, including commercial or home CCTV, theft prevention and child or family member or home monitoring and other care scenarios. It supports capture, analysis, recording, and monitoring of video data coming from one or more video or network cameras attached to a Linux system. ZoneMinder also support web and semi-automatic control of Pan/Tilt/Zoom cameras using a variety of protocols. It is suitable for use as a home video security system and for commercial or professional video security and surveillance. It can also be integrated into a home automation system via X.10 or other protocols. If you're looking for a low cost CCTV system or a more flexible alternative to cheap DVR systems then why not give ZoneMinder a try? |