Train water overflow monitoring system based on distributed optical fibers

Abstract

The invention relates to a train water overflow monitoring system based on distributed optical fibers. The train water overflow monitoring system comprises a fiber demodulator, distributed optical fibers, optical fiber slots, elastic film, a monitoring computer and a server. In the event of overflow, excessive water overflows from an overflow pipe and a water feeding pipe on the other side of a compartment and falls onto the elastic film of the optical fiber slots under the overflow pipe and the water feeding pipe on the other side of the compartment, the elastic film produces small vibrationto cause that the distributed optical fibers in contact with the elastic film produce strain, the fiber demodulator positions strain positions according to the backward Rayleigh scattered light generated by the distributed optical fibers and transmits the position information to the monitoring computer in a central control room through the ethernet network, and the monitoring computer determines the number of the compartment which overflow occurs according to the information of trains parked at a station at that moment and the position information of the overflow, sends a corresponding valve closing command and accordingly turns off a solenoid valve of the corresponding water feeding pipe in time to avoid water resource waste.

Description

technical field [0001] The invention relates to the field of train water supply, in particular to a train water supply overflow monitoring system based on distributed optical fibers. Background technique [0002] The current water filling of passenger trains in our country is mainly realized manually. When the water filling is completed, the water filling worker observes that there is water overflowing from the overflow pipe of the train, and closes the valve corresponding to the water supply pipe. This manual water filling method is not only inefficient and has great potential safety hazards, but in fact, during the water supply process, a water supply worker needs to be responsible for the water supply task of 3 to 5 carriages, which leads to the overflow of some carriages. The water engineer is also operating the water supply pipes in other compartments, and cannot close the water supply valves corresponding to the overflow compartments in time, resulting in a waste of wa...

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Problems solved by technology

In addition, East China Jiaotong University has carried out some research on the automatic valve closing technology of the upper water plug based on water pressure data, trying to judge the valve closing time by the pressure difference in the upper water pipe before and after the water tank is full. The water pressure in the water pipe itself is not a constant value, and the fluctuation range is usually greater than the pressure fluctuation before and after the water tank is full

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