The new Hindhead Tunnel on the A3 in Surrey is nearing completion and when it goes live, the public will be protected by a CCTV system comprising 112 cameras linked to two control rooms.
Providing the signal connectivity will be AMG Systems which has been asked to provide its Guardian-Lite™ 3700 transmission series, using uncompressed digital transmission with dual redundancy and Ethernet in a self healing ring on a single fibre.
The Ethernet is used for the control signals for the PTZ camera movements. Two Pan Tilt Zoom (PTZ) cameras are located at the closest junctions each side of the tunnel to monitor traffic flow leading into the tunnel. In the tunnel itself there are 110 cameras; 36 PTZ legacy cameras, 10 second generation PTZs and 66 fixed cameras.
PDS Limited is responsible for the design of the CCTV solution, the SCADA control system and system integration with a number of the other tunnel systems for the Hindhead project.
Project Manager Gary Parker of PDS says, “The Hindhead tunnel is a benchmark project because this is the first time that a project of this kind is using a fibre optic backbone. The backbone is 1 Gigabit per second and carries signals from all the various tunnel systems. The entire solution has been designed with future proofing in mind with built-n redundancy – a minimum of 25% of the total capacity is reserved for future expansion, both for fibre backbone as well as for the transmission equipment. Future expansion in camera count can be facilitated using AMG’s drop and insert technology”.
“The tunnel is quite unique from the point of view that it is a dug tunnel rather than a bored tunnel. One of the challenges when designing the solution was to ensure that the system would meet current standards where possible, as well as meet first generation legacy requirements for the matrix. There were also space issues for mounting the second generation cameras, so we ended up using stainless steel Metal Mickeys on mil spec in order to use less physical space”.
“AMG’s transmission solution came very highly recommended, both from Tyco and from Chubb – who did six of the seven HA Regional Control Centres. The 3700 is perceived to be one of the best, if not THE best transmission solution in the world. AMG was involved in the initial discussion with us and Chubb, but frankly, we have had very little reason to get in touch with them since the equipment was supplied because we have not experienced any issues.
“The factory acceptance test, which was completed last week, indicated that it’s a well designed, very capable and robust transmission system. We’re currently in the process of planning the commissioning on site which will commence early November 2010”, Gary Parker says.
The A3 Hindhead project is included in the Government’s program of major schemes. The project will complete the dual carriageway link between London and Portsmouth and remove a major source of congestion, particularly around the A3/A287 traffic signal controlled crossroads. The new road will be 6.5km (4 miles) long and includes 1.8km (1.1 miles) twin tunnels under the Devil’s Punch Bowl.
About AMG Systems
AMG Systems Ltd. is a leading provider of video and communication transmission solutions designed for CCTV surveillance operations in the Transportation and Security Sectors. The company is a global supplier which offers a full range of transmission technologies including multimode and singlemode video, data and audio fibre optic transmission systems; single & multi channel unshielded twisted pair (UTP) links for video, data & audio; multi-port Ethernet switches for the transmission of IP based solutions over fibre, and both analogue and digital wireless products for the transmission of video & data. As a result AMG transmission solutions have been successfully implemented in many high profile projects throughout the world. Projects include supplying the transmission system for the UK’s NRTS project, using the innovative Guardian-Lite™ 3700 system, and the security and surveillance of the Museum of Islamic Art in Doha, Qatar. AMG have completed projects for Airports, Rail, Ports, Industrial and commercial sites, sports and leisure facilities, Town and City centres, Military, Universities and hospitals. More information can be found on the AMG website. http://www.amgsystems.com/