UA109218U - METHOD OF INTERNET DELIVERY TO TRAINS AND ELECTRIC CARS ON THE BASIS OF VRL TECHNOLOGY - Google Patents

Abstract

A method of delivering the Internet to train cars and trains on the basis of BPL technology, in which each power station of the railway is equipped with two modems, one for allocation, the other for the formation of an Internet stream for the next power station. The internet signal is input into the high-voltage power line by transmitting a signal from the server output or a typical Internet switch via cable to the signal modulator. The transmission and allocation of the Internet signal in rolling stock cars, each of which is equipped with a switch, occurs through a galvanic connection between the train pantograph and the transmission line.

Description

45 Mbit/s with point-to-point connection and up to 25 Mbit/s MevPp network. It is integrated into the computer network of the Efetpei substation. 2. Capacitive connector VRI12SS for transmission of a broadband signal over 10 (6) kV medium voltage cables. Cable length - Change.

To organize a "point-to-point" connection of broadband data transmission over a high-voltage transmission line (contact network on a section of 60-70 km, i.e. from substation to substation), two VRIs, modems and two capacitive connectors (couplers) for signal injection are required in line The modem and the coupler are connected by a coaxial cable. Any Internet devices can be connected to modems. Thus, a communication channel supporting the TSR protocol is formed between this equipment, which is transparent for application programs /

IR.

VRI, modems at the output form a radio signal in the range of 2-30 MHz with OEOM modulation on 1000 subcarriers, which allows you to save the communication channel in conditions of re-reflection of electromagnetic waves. Moreover, each carrier can be modulated by one of the following algorithms: VRAC, ОР5К, ОАМИб, ОАМб64, ОАМ256. If the noise level in any region of the spectrum is too large, the processor suppresses the carrier frequencies in this region and redistributes information on the carrier frequencies in the region of the spectrum in which the noise level is minimal. As a result, the data transfer rate drops, but the connection is maintained. This ensures reliable transmission of information even in noisy conditions of the power line.

The medium of information transmission is an electromagnetic wave that propagates along a copper transmission line (between the conductive core and the ground) similar to a two-wire transmission line.

The radio signal transmitted over the copper (good signal conductivity and minimal losses) transmission line, through the coupler at the reverse end of the power station 60-70 km away, is sent to a similar modem, which is used as an Internet signal (stream of TSR / IR video pulses) for transmission to users in the given place, so 1 retransmission of the signal to the next power station again through the coupler 1 to the copper transmission line. To cover the distance that cannot be reached by modems, VRIs can be used. repeaters, the only function of which is retransmission 1 signal amplification. This ensures stable data transfer, connection quality 1, respectively, high availability of the VRI network - even during switching processes in the distribution network. At each power station, in this way, two modems are used (one for allocation, the other for forming the Internet flow) to the next power station. These devices connect

Eshetgpei by cable.

The speed of information transmission in the line mode is up to 45 Mb / s, in the Mevia network - up to 25 Mb / s.

At the same time, through the modulator, the following is also ensured: " use of TOR / IR protocols for accessing devices; " Mezi-network organization with automatic dynamic routing; "- use of the management system with ZHMMRUZ; " integrated means of information protection (Kigehai).

Different types of power lines require different types of signal injection into the transmission line.

The method works as follows.

The transmission and selection of the Internet signal in the carriages of moving trains occurs through a galvanic and reliable connection between the pantograph of the train and the contact line. According to the requirements and based on the descriptions that can be found on the Internet, the galvanic contact between LEP 1 and the pantograph is reliable: the pressure of the pantograph at high speed allows a continuous non-sparking contact to ensure the operation of the train's electric motor.

Through the galvanic contact "contact network (LEP)-electric locomotive pantograph", a high-frequency signal of 2-30 MHz is sent through a coupler to a similar VRI modem, in which the radio signal is converted into standard IR protocol video pulses.

The stream of video pulses from the modem is sent to the Internet switch 1, from there through the cable connection from the electric locomotive - to each car. In addition to the cable connection between the electric locomotive and the first car from it, as well as between any subsequent cars for the transmission of the Internet signal, radio communication using standard UM1-No equipment, a range of, for example, 5 GHz, can be used. This will avoid the problem of forming trains from different wagons.

In each car, the received signal is sent to the 10 / 100Bbave T 1 switch and then to the U/1-NIi 2.4 GHz access point for passenger service, display of advertising on the screens.

Thus, with the help of the VRI solution, each power cable (LEP) becomes a broadband data transmission channel, and the power network turns into a highly efficient communication network with a high speed of information transmission.

Due to the fact that in VRI, the speed of information exchange is quite high, the system can be used not only for the transmission of the Internet for passengers, but also the accounting data 1 of energy consumption management and other technological and telemetric information.

Presumable Kapler

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