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Above 50 Sony SNC-WR632C high speed dome cameras allow teams of prevention disaster take immediate measures in emergency situations in this district of Tokyo. Computers have been installed in railway stations, main road routes, evacuation centres and other key points. The solution is completed with the analysis of the behavior of crowds of NEC technology.

Toshima is one of the eight districts in the metropolitan area of Tokyo where they live about 300.000 citizens. With an area of 13 square kilometers, This area has tall buildings, Department stores and shopping areas, In addition to residential neighborhoods with high population density. An average of 2,7 millions of travelers crossing daily huge train from Ikebukuro station, the second largest in Japan.

The great earthquake of Japan in March of 2011 It did not cause excessive damage to buildings and roads in the District of Toshima, but that there were scenes of chaos in the Ikebukuro station after suspend transport services, due to the isolation of passengers who could not return to their homes. The relief staff had difficulties to handle the situation, since they could not estimate the number of people trapped in the station or at what speed increased the crowd. They could not provide details such as the number of passengers and movements.

As a result of this catastrophe, the planners of this district were realized that needed a system of efficient monitoring that would allow them to optimally manage any critical situation as earthquakes, fire or flood. This would collect accurate information and share it instantly, in order to maximize the safety of the crowd at the station and in other public areas.

Under these premises, Toshima has implemented a comprehensive system of preventing disaster, whose facilities have been installed the town hall building in the District of the city, which is equipped with a crew rescue specialist and an emergency electric generator of 72 hours. In total, 51 network high speed dome cameras Sony SNC-WR632C provide monitoring in real time of train stations, main road routes, evacuation centres and other key points of the district.

Seventeen of these teams are located in transport stations and main roads intersections, generally having more Congregation of people; while others 34 cameras are located in specific rescue centers for colleges and other facilities designated as evacuation areas.

These cameras are part of a solution of technology of analysis of the behavior of crowds of NEC Corporation. The images from the cameras, recorded in real time and compiled the 24 hours at stations and intersections, they are analyzed and an alarm is triggered when the agglomeration levels exceed previously established boundary. Together with the reports of injuries, damage and the availability of the designated Rescue Center, planners can accurately assess the situation throughout the district and make quick decisions.

Cameras the weather-resistant outdoor have been installed on lampposts and signs of the roads with few meters above the ground, as well as in schools and other buildings with less of 10 stories high. In combination with the powerful optical zoom 30 x of these teams, the location, relatively low, disaster management staff provides a clear picture of what happens to the ground in case of incident.

At night, high sensitivity cameras are very useful in the illuminated neon around Ikebukuro station, as well as in the darkest residential areas where conventional cameras would have difficulties to show clearly what happens without additional lighting.

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By • 20 Jan, 2017
• Section: Case Studies, Control Systems, MAIN FOCUS, Urban Security