scholarly journals Method of Assessing the Efficiency of Electrical Power Circuit Separation with the Power Line Communication for Railway Signs Monitoring

2021 ◽  
Vol 22 (4) ◽  
pp. 407-416
Author(s):  
Piotr Kiedrowski ◽  
Łukasz Saganowski
Keyword(s):  
Data Transmission ◽  
Separation Efficiency ◽  
Electrical Power ◽  
Power Line Communication ◽  
Specific Kind ◽  
Long Distance ◽  
Quick Method ◽  
Power Circuit ◽  
Distance Data ◽  
Selection Of

Abstract The article describes a project to use PLC technology in railway light signs. The proposal presents a solution for the separation of supplying circuits with the use of filters. The necessity of separation is a result of long distance data transmission between sign controllers and LED railway signs using PLC modems which work on the same frequency. Problems in the selection of filter parameters are presented due to the fact that there is no specification for the characteristic of the separation filter, there are only requirements for the reliability communication system. To meet these requirements, the circuits separation efficiency must be assessed. The paper presents a quick method to evaluate separation efficiency. Structure of the network, as well as the set of devices which realize this specific kind of wired sensor network for supervising railway LED sign network and maintenance parameters are also presented in this article.

Automatic Laser Monitoring for Dam Safety

2005 ◽  
Vol 295-296 ◽  
pp. 239-244
Author(s):  
K.D. Yue ◽  
X. Zhou ◽  
J. Gao
Keyword(s):  
Data Transmission ◽  
Can Bus ◽  
Arch Dam ◽  
Dam Safety ◽  
Monitoring Methods ◽  
Long Distance ◽  
Dam Safety Monitoring ◽  
Distance Data ◽  
Data Transmission System ◽  
Laser Monitoring

Many monitoring methods for dam safety have been proposed in recent years but it is difficult to monitor the arch dam automatically. A novel inspecting method for arch dam safety monitoring is described in this paper. This measurement system is based on the principle of transmitting the comparative displacement one by one. The error and accuracy of the system is analyzed. By this method, a large arch dam can be measured automatically. Long distance data transmission system using CAN bus and Internet is established. It is convenient to monitor the safety of dams from long distances.

LHAASO KM2A distributed long-distance data transmission

2019 ◽  
Vol 3 (3) ◽  
Author(s):  
Feng-Fan Yang ◽  
Jin-Fan Chang ◽  
Zheng Wang ◽  
Shi-di Zhu ◽  
Xiao-xu Lu ◽  
...  
Keyword(s):  
Data Transmission ◽  
Long Distance ◽  
Distance Data

scholarly journals The Research of Long-Distance Data Transmission Based on Meteorological Sensor Network

2014 ◽  
Vol 7 (1) ◽  
pp. 59-70 ◽  
Author(s):  
Dehui Kong ◽  
Tao Li ◽  
Xingang You ◽  
Xingming Sun ◽  
Baowei Wang ◽  
...  
Keyword(s):  
Sensor Network ◽  
Data Transmission ◽  
Long Distance ◽  
Distance Data

Development of Long Distance Data Transmission and Control Circuit in Borehole

2013 ◽  
Vol 321-324 ◽  
pp. 2492-2495
Author(s):  
Heng Le ◽  
Ming Deng ◽  
Qi Sheng Zhang ◽  
Guan Min Li ◽  
Shan Qiao
Keyword(s):  
Control System ◽  
Data Transmission ◽  
High Speed ◽  
Digital Converter ◽  
Long Distance ◽  
Analog To Digital ◽  
C Language ◽  
Distance Data ◽  
Communication Distance ◽  
And Control

This paper introduces a data transmission circuit used to transmit signals over thousands of meters in borehole; meanwhile, a control system that is equipped with the circuit is also presented here. This set of equipment has many advantages over previous systems-smaller size, less cost, longer communication distance and friendlier user interface. The design of hardware in the system consists of LVDS transceiver circuit, USB port circuit based on high speed MCU C8051F321, automatic power-on circuit based on relay TQ201 and acquisition circuit based on 24-bit analog-to-digital converter LTC2492. The software is based on both C language and VC++6.0. Finally, it accomplishes a kind of data transmission circuit and control system in borehole which delivers the data from thousands of meters away.

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