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Case Study: Smart IP video surveillance increasing safety

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A complete Moxa IP video surveillance solution has been implemented for railroad level crossings in Taiwan to increase safety.

High-traffic railroad level crossings remain a global safety concern despite the widespread use of active warning systems to clear the tracks for oncoming trains. While most train-and-car collisions are highly preventable, both real-time status and visuals of railway level crossing areas and warning devices are required to help car drivers, pedestrians, railway operators, and local authorities avoid accidents. 

Transportation and safety professionals are therefore increasingly deploying IP video surveillance technologies to provide real-time information and make existing level crossings smarter and safer. Key system requirements include real-time obstacle detection, round-the-clock asset monitoring, and non-stop network video recording.

Moxa solution

Advanced CCTV cameras designed for harsh outdoor environments are used at smart level crossings to provide 24/7 video surveillance for the clearance zone. In addition, state-of-the-art network video recorders are also installed in the wayside cabinet to store video streamed from the cameras so that accident investigators can replay the events leading up to a collision and identify its cause. 

Moxa’s VPort 36-1MP rugged IP cameras are used to capture and encode real-time video of the clearance zone, which is then streamed to an MxNVR-IA8 industrial network video recorder inside the wayside cabinet. 

In addition, Moxa’s IVA (intelligent video analysis) software application increases efficiency and protection coverage by using triggered alarms including: 

Camera Tamper: Triggered when the camera lens is blocked, redirected, defocused, or painted;

Virtual Fence: A virtual tripwire in the camera frame will trigger an alarm whenever motion across the line is detected;

Alert Zone: Any motion detected inside the detection zone will trigger an alarm; 

Removed Object: The camera detects whenever an object is removed from the frame, and will trigger an alarm after a certain user-defined time threshold; and,

Unattended Objects: Tracks moving objects in the camera frame and detects abnormal loitering.

While Moxa’s IVA software application is the principal image processing technology that makes the above solution smart, the CCTV cameras and network video recorders deployed also need to be ruggedly designed with industry certified reliability.

Key requirements for the video surveillance system include rugged design with wide operating temperature range of -40°C to 75°C; industry certified reliability from EN 50121, EN 55022, UL/cUL Class 1 Division 2, ATEX Zone 2, and NEMA TS2 certifications for electrical equipment used in railway applications; and IVA for automatic obstacle detection of people entering the level crossing at any time, any moving object other than trains identified on the track, objects abandoned at trackside, large metallic or organic objects on the tracks, such as logs, shopping carts, or a motorcycle, or people crossing the railroad tracks.

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