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Get Onboard with the Latest IP CCTV Cameras

Overview

In recent years, IP CCTV systems on trains have expanded in scope and reach, with cameras now being deployed both inside and outside of train cars. As a result, a wider variety of cameras are needed, with the cameras expected to provide better performance and reliability, and meet new and more complex design requirements than before.

Advanced IP CCTV Systems Deliver Operational Efficiency

Although conventional CCTV systems on trains were designed to provide security, when combined with intelligent railway systems, operators found they could use the same CCTV systems to make operations more efficient by providing visibility and key information in real time. With an advanced, integrated IP CCTV system, train operators can get an immediate live view of the status both inside and outside their train at key locations. The train operator, whether working onboard or from a control room, can use the information to make loading and unloading passengers more efficient, check the status of routes, and identify when a passenger train car is full.

More Deployment Locations than Before

Train operators can only truly realize the operational benefits of IP CCTV systems if the system is sufficiently advanced and camera coverage is sufficiently thorough. Whereas in the past it was sufficient just to install a few consist cameras with broad surveillance coverage of the inside of a train car, modern systems give operators greater situational awareness by making video surveillance more pervasive. This means more cameras, in more locations, doing more work. For example, consider the train project illustrated in the following diagram.

Multiple cameras are installed throughout the train.

  1. Forward and rear facing cameras (Zones 1 and 2)—These two cameras monitor the track, and work with the event data recorder in the car.
  2. Retro-vision cameras (Zones 3 to 6)—These cameras are primarily for the driver or operator to view passengers entering and exiting the train when it is stopped at a platform, or to record the trackside situation when the train is moving.
  3. Car control cameras (Zones 7 and 8)—These cameras are located in the driver’s cabin, or in a remote control room for unmanned trains. The cameras monitor the status of the train control panel and LED signals.
  4. Pantograph camera (Zone 9)—For trains that use overhead wiring, this exterior, roof-mounted camera monitors the pantograph that connects the train or tram with the catenary overhead line.
  5. Door cameras (Zones 10 to 13, 16 to 19)—These cameras monitor passengers entering or exiting through each of the doors. The interior view provided by the cameras supplements the driver’s exterior view of the doors via rear-view cameras. In addition, video recorded by the cameras can be used for reviewing ticketing information, since some systems may use video-based person-counting technology.
  6. Consist cameras (Zones 14, 15, 20)—These cameras monitor the situation inside the cars.
  7. The above six camera location types bring the number of cameras in a consist to about 15. However, modern train systems are also using cameras in the following location types:

  8. Intercom cameras—Most trains have an intercom system for emergency communications between passengers and the driver or operations control center. Although the intercoms traditionally transmitted voice only, some newer systems include a camera so the driver or operator can see who is speaking into the intercom. Both the audio and video can be recorded for later review.
  9. Zone-specific cameras—Video coverage at other locations, such as priority seats, vending machines, luggage areas, bike parking areas, and machine cabinets is sometimes used to provide additional security.

New Requirements for Onboard IP CCTV Cameras

On-board cameras must meet many demanding requirements:

More Form Factors: Now that IP cameras are being deployed in more locations, common dome or box-type cameras are not sufficient. For example, the rear-facing and pantograph cameras mounted on the train’s exterior require a rugged form factor that is both aesthetically pleasing and able to operate consistently in harsh conditions. And inside the train, the intercom camera must be able to fit comfortably inside the wall.

Day and Night Viewing: On-board IP cameras are usually designed only for daytime use, since the interior is usually well lit. However, cameras used to monitor the track or the train’s exterior must also be able to handle nighttime low illumination conditions. In addition, some trains use low lighting in the driver or control rooms.

High Video Performance: Trackside cameras must be able to record high resolution video at a high frame rate in order to capture clear images while the train is moving quickly. Typical requirements for on-board IP cameras are 10 to 15 frames per second, and 640x480 or 720x480 resolution. In contrast, trackside cameras must provide a much higher performance of around 30 frames per second and 1280x720 resolution.

Extreme Operating Temperatures: Cameras located both inside and outside the train are now required to operate consistently in extreme temperature conditions. This is because train operators may need to monitor onboard conditions even when the train is not in service, such as when the train is on standby in the garage and the air conditioning is turned off. For this reason, cameras must meet the EN 50155 T3 (-25 to +70°C) or TX (-40 to +70°C) temperature criteria.

High EMI / Surge Protection Level: On-board CCTV cameras are usually installed in a safe environment where EMI and surge protection is not needed. However, cameras mounted on the train’s exterior must support EMI and surge protection to ensure consistent system performance. The minimum requirement is defined by the level 3 criteria in the EN 50121-3-2 (IEC 62232-3-2) “Railway Applications – Electromagnetic Compatibility” standard for rolling stock.

Moxa’s Comprehensive EN 50155 Rolling Stock IP CCTV Solutions

Moxa’s comprehensive IP CCTV solutions include network switches, wireless communication hardware, IP video products, video management software, and NVR platforms for rolling stock applications.

Moxa’s portfolio includes a solution for every application and every installation environment. Moxa provides three different types of EN 50155 IP cameras: consist IP cameras, rear-view IP cameras, and flush-mount hidden IP cameras. All three camera types are rugged and come with M12 Ethernet connectors, PoE power inputs, and comply with essential EN 50155 and EN 50121-3-2 criteria. In addition, video resolutions up to 1280x800 in H.264 and MJPEG video formats are available for live viewing and video recording.

For applications required to operate in extreme temperatures, wide temperature cameras that operate reliably in a -40 to 75°C temperature range are available. In fact, Moxa is the first manufacturer to provide cameras compliant with the higher EN 50155 TX criteria. An important consideration is that Moxa’s cameras do not use built-in heaters or fans, which eliminates a potential point of failure, and helps ensure that the cameras will provide excellent service for many years.

Moxa provides a diverse selection of form factors allowing IP cameras to be deployed in any number of locations.

In addition to IP cameras, Moxa provides EN 50155 M12 Ethernet switches, EN 50155 NVR platforms, EN 50155 wireless APs, and NVR software. Taken together, Moxa’s products can be used to build a complete EN 50155 IP CCTV system. To simplify configuration, all EN 50155 products are equipped with Moxa FLI™ configuration technology, which is used to automate network and device configuration.

Moxa has a broad selection of EN 50155 products.

Visit the Moxa website for product details, or subscribe to Moxa’s railway newsletter to receive information about the latest railway trends and learn about Moxa’s newest IP-based solutions for railway applications.

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