VERNA specialists have developed and tested a mobile autonomous video surveillance system for mobile warehouse to improve the safety of employees of a large industrial enterprise.
Mobile autonomous wireless video surveillance system for rolling stock allows you to provide the necessary inspection of the space in front of the freight train when reversing, regardless of the time of day and weather conditions, and monitor compliance with safety rules.
A large metallurgical plant actively uses railway cars of various designs to move raw materials and finished products, both on the territory of the enterprise and beyond its borders. For this, dozens of locomotives are involved, and the daily car turnover can reach several thousand units.
Disassembly and formation of the warehouse is most often carried out by settling, when the diesel locomotive pushes the cars from behind, and the stacker of the train, being first in the course of the movement, controls the actions of the driver on the radio. Regardless of the time of day and weather conditions. At the same time, he also monitors the observance of safety precautions, the position of the arrows and the signals of traffic lights.
The customer needed to minimize the risks of injury to the staff and, first of all, the installers by reducing the time they stay in the wagons while driving.
At the same time, it was necessary to create a mobile and autonomous video surveillance system, since the number and types of freight cars on the train are constantly changing, and the power supply at the place of its installation is often not available.
Based on the purpose and specificity of the application, a prototype solution was assembled on the basis of an all-weather sealed metal box, which provides the necessary protection of electronics from external influences, including moisture, dust, vibration, possible shocks and falls. The hermobox has the ability to quickly transfer to another goods car and transmit the image by wireless communication channel from the end of the railway rolling stock to the terminal in the locomotive cab.
For mounting on the rolling stock, we used a magnetic mount, which allows you to quickly rearrange the external module to another car and guarantee reliable adhesion to the surface.
The video surveillance system is based on the Axis camera, which is designed specifically for use in transport and is certified according to the railway standard EN50155.
In particular, the M12 connector is used to connect the network cable, which guarantees a high-quality connection during operation in conditions of strong and constant vibrations. In addition, the model supports recording to the built-in memory card and is able to store a weekly video archive even in case of loss of communication with the locomotive cab. In addition to the monitoring function, there is also a DVR mode for investigating possible emergency situations.
For wireless transmission of the digital video signal from the camera of the train's stacker terminal at both ends, external Wi-Fi access points manufactured by TP-Link are used. They are equipped with bi-directional antennas and can provide the required signal quality and bandwidth in conditions of interference from metal structures of wagons and diesel locomotive generator, atmospheric phenomena and agglomeration dust.
Power supply to the terminal and access point from the locomotive side is provided by a converter connected to the on-board network. A battery with a discharge controller is responsible for the autonomous operation of the equipment on the extreme car for 12 hours to extend the life of the battery.
Video surveillance and archiving functions are organized using Milestone Systems software.
The modular design has the potential for further improvement.
“Zaporizhstal” — Ukrainian metallurgical plant in Zaporizhzhia, one of the city-forming enterprises. It is one of the largest metallurgical enterprises in Europe and is part of the Metinvest group.
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