In response to requests from our long-standing clients, Audissey now offers complete CCTV solutions, designed, installed and maintained to the same exacting standards that we are known for with regard to audio visual systems.
Our focus is on providing electronic surveillance solutions that will help our clients prevent incidents before they occur. Remote monitoring, motion detection and push notifications to smart mobile devices is a standard feature on all our systems.
For more demanding applications, we can supply Intelligent Video Surveillance (IVS) systems that can be programmed to detect not only motion, but also Line Crossing (Virtual Tripwire), Abandoned Object, Missing Object, Scene Change etc. and automatically trigger alarms or initiate other actions.
Comparison of Digital and Analogue CCTV Systems
Analogue CCTV systems require a coaxial cable to be drawn from each camera to the video recorder. A separate cable is required to supply power to each camera. While this might be easy to implement for smaller systems consisting of up to about 8 cameras, it is inconvenient (and costly) for systems with a larger number of cameras, especially if the DVR is some distance from the cameras. With an IP based CCTV system, multiple cameras can connect to one network switch which can be installed close to the cameras. A single network cable between the switch and the NVR can carry the signals from those multiple cameras to the NVR. For very large installations, multiple network switches placed close to each cluster of cameras can be used. Additionally, the same cable that carries digital video signals from the cameras to the NVR can be used to supply power to the cameras, using a technology known as Power over Ethernet (PoE). If the cameras have PTZ (Pan, Tilt, Zoom) capability, the control signals for these functions can also be transmitted along the same cable.
The ability to capture higher resolution images used to be one of the obvious advantages of IP cameras. Then, HDCVI (High Definition Composite Video Interface) was introduced to allow analogue camera systems to achieve resolutions approaching those of digital systems, without the perceived disadvantages (higher cost and complexity) of digital systems. Intelligent Video Surveillance technology which is built in to IP cameras but cannot be implemented in analogue cameras, is now finding its way in to HDCVI compatible DVRs. For customers looking to upgrade their existing analogue CCTV systems, HDCVI will probably offer the lowest-cost path, as the existing coaxial cable can most often be reused. But for completely new CCTV installations, we recommend IP based systems.
Automated Image Analysis
Historically, analog CCTV systems were very reactionary. They used human monitoring to catch events in real time and stored past video feeds for review to reconstruct events after they have happened. When monitoring, someone would have to sit at a bank of monitors and watch the screens for any situations developing. This was a very time and labor-intensive activity and was dependent on human infallibility, which we know doesn’t exist. Occasionally the person watching the monitors would miss something because he or she was looking at the wrong screen at the wrong time or just suffering from fatigue after staring at the screens for hours and hours.
With the integration of Intelligent Video Surveillance (IVS) technology in to IP cameras, video security became proactive. Now even basic IP cameras can be programmed to detect Line Crossing (Virtual Tripwire), Abandoned Object, Missing Object, or Scene Change and automatically trigger alarms or initiate other actions. More advanced technology is also available that can automatically recognize faces and read number plates.