Dahua protecting Recife rail system.

Integrator Avantia has installed a 1380-camera Dahua CCTV solution to help protect the 71km subway system of Recife in Brazil with a new video surveillance solution that incorporates video analytics and comprises nearly 1400 CCTV cameras.

RECIFE’S urban trains system carries around 400,000 passengers a day – it is the third largest railway operator in number of users in Brazil. To ensure a safe journey for passengers, it was imperative to increase the subway security with modern technologies and monitoring equipment.

The main challenge was to adapt the technology to the specific conditions such as lighting, people flow and speed of a subway station while not interrupting the transportation service. Therefore, ease of operation, installation and high availability of the system were prerequisites for choosing the surveillance solution.

Companhia Brasileira de Trens Urbanos (Brazilian Urban Trains Company, CBTU) inaugurated a new phase the surveillance operation with the acquisition of 1380 high-resolution cameras from Dahua Technology. The system has Dahua embedded video analytics monitoring points at 52 locations across the networks. There are 4 Dahua cameras used in the application including the DH-IPC-HF5231EN-Z-S2; DH-IPC-HF5231EN-S2; DH-IPC-HDBW8231E-ZS2; and DH-SD65F230FN-H – all equipped with H.265 compression and video analytics and Starlight low light capabilities.

These features have enhanced the safety and security of the Central and Southern lines of the Pernambuco Subway and allowed the operators to obtain detailed views of the subway operations, especially at peak hours or during tourist events, such as Carnival. Day and night, under difficult lighting conditions and even in points with extreme low light, Dahua exclusive Starlight cameras deliver sharp and colourful images to the surveillance center to guarantee the best performance in conditions of very low luminosity (0.005 lux).

According to Avantia’s operational director, Hamilton Valentin the partnership with CBTU has been very successful.

“Due to the peculiarities of the implementation of the security system this was a major deployment challenge, since all the systems of the stations were in full operation,” Valentin explains. “Successful commissioning was the result of an outstanding team effort with the full support and partnership of the client, so that the implementation would occur in the best way possible and with minimal interventions in the subway system.”

The new video surveillance system was designed to operate in a centralized management, which differs completely from the previous single-management model. Thus, with this change, it became possible to take better advantage of the human resources of the security team at the 37 stations. The new cameras make it possible to identify suspects and trigger maintenance services in a more agile way, minimising impact on operations.

Video footage of incidents can be shared with police which, if necessary, can conduct searches in the image database and use resources such as zoom to capture details that help in the investigations. The operators themselves can also alert authorities directly, depending on the incident.

“The cameras are monitored centrally in a dedicated control room,” says Leonardo Villar Beltrão – CBTU Recife superintendent. “This will leave to a cost reduction for the company as we are able to reduce local surveillance at some subway stations. But the great advantage will be seen in the enhanced safety of our passengers.

“Images from the system help us identify crimes in stations and quickly get this information to law enforcement. Although we are still in the implementation phase of smart technology, results are being seen. We have already managed to identify suspects who have been arrested by police. We are employing all efforts to train and hire new agents and I am sure we will achieve greater gains in the future.”