Wireless transmission monitoring in a geological disposal repository (II) Research and Development

2009 ◽  
Vol 1193 ◽  
Author(s):  
Hisashi Takamura ◽  
Hiroshi Shimbo ◽  
Kazuo Okutsu ◽  
Yasuhiro Suyama ◽  
Kazuhiro Aoki ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Low Frequency ◽  
Transmission System ◽  
Wireless Transmission ◽  
Wireless Data ◽  
Transmission Experiment ◽  
Geological Disposal ◽  
Transmission Distance ◽  
Wireless Data Transmission ◽  
Transmitting Antenna

AbstractThe development of the wireless transmission monitoring in the geological disposal repository, the underground laboratories, the test facilities and the demonstration area, will present an opportunity to provide greater flexibility and robustness to the confirmation of the barrier performance and therefore safety of repository [1]. So as to realize the wireless transmission monitoring especially in the betonite barrier, RWMC has been researching and developing the wireless data transmission system which uses the very low frequency (VLF: around 1 kHz) electromagnetic wave. In this system, transmitting and receiving is conducted through loop coil antennas. The overall transmission system is digitized and maximum 19 sensors can be connected to one transmitter. Transmission distance can be selected from several meters to several hundred meters.This paper firstly presents the behavior of VLF electromagnetic wave propagation in the rock mass and the underground facility revealed by the in-situ transmission experiment and the analytical method evaluating the behavior of the VLF electromagnetic field in various environments. Development results of the transmitting antenna and the improvement of the transmission performance are secondly shown. The technical feasibility and the future R&D plan of the wireless monitoring in the repository are also explained.

Hardware System for Unmanned Surface Vehicle Using IPC

2014 ◽  
Vol 971-973 ◽  
pp. 507-510 ◽  
Author(s):  
Xiang Shi ◽  
Shi Ming Wang ◽  
Zhe Xu ◽  
Qing Yi He
Keyword(s):  
Monitoring System ◽  
Global Positioning System ◽  
Transmission System ◽  
Wireless Transmission ◽  
Wireless Data ◽  
Unmanned Surface Vehicle ◽  
Hardware System ◽  
Wireless Data Transmission ◽  
Global Positioning ◽  
Data Acquisition Card

The design of hardware system for unmanned surface vehicle using IPC is introduced. The hardware system includes shore-based monitoring system, USV carrier and wireless transmission system. The key to USV carrier is IPC and PCI8602 data acquisition card, and PCI8602 is used to control DC motor and other sensors. The differential global positioning system connects with IPC through serial ports of RS232. Shore-based monitoring system mainly includes PC Computers, and wireless transmission system connects with IPC and PC Computer, through serial ports of RS232, so that it achieves wireless data transmission. Then, the experiment results indicate that the hardware system for USV has succeeded to accomplish remote control.

Data Transmission System of Rotating Electric Field Mill Network Using Microcontroller and GSM Module

2013 ◽  
Vol 64 (4) ◽  
Author(s):  
Zainuddin Nawawi ◽  
Muhammad Abu Bakar Sidik ◽  
Mook Boon Kean ◽  
Hussein Ahmad ◽  
Zolkafle Buntat ◽  
...  
Keyword(s):  
Electric Field ◽  
Data Transmission ◽  
Voltage Divider ◽  
Transmission System ◽  
Wireless Data ◽  
Alert System ◽  
Function Generator ◽  
System A ◽  
Wireless Data Transmission ◽  
Data Transmission System

Lightning is an environmental phenomena that cause many fatalities and property destructions in Malaysia since the country is located in the high isokeraunic area. To reduce the fatalities an alert system should be developed. The alert system can consist of several Rotating Electric Field Mill sensors which are installed in spread. Data from the sensors must be gathered in a data centre building for observation,  analysis, and triggering an alert signal. Therefore, the objective of this work is to develop a data transmission system by using a wireless method. The wireless data transmission system consists of a microcontroller, voltage divider, and GSM module. Hardware and software development is carried out to achieve the objective. Furthermore, to test the transmission system a function generator is connected to the analog digital converter input of the microcontroller. By varying the magnitude of the function generator output an observation on data transmission is carried out. It is found that the magnitude of receiving data which is displayed on the website is exactly the same with the sent data. In here in lab wireless data transmission system devices and a website to observe the transmitted data from Rotating Electric Field Mill sensors has been successfully developed.

Data Transmission of Ground Penetrating Radar over Wireless Network

2014 ◽  
Vol 701-702 ◽  
pp. 961-964
Author(s):  
Tao Tao Li ◽  
Feng Yang ◽  
Ming Chu Liu
Keyword(s):  
Wireless Network ◽  
Ground Penetrating Radar ◽  
Data Transmission ◽  
Transmission System ◽  
Wireless Data ◽  
Practical Applications ◽  
Wireless Data Transmission ◽  
Receiver System ◽  
Core Components ◽  
Ground Penetrating

A wireless data transmission system used to realize data transmission of ground penetrating radar (GPR) is designed. It including data receiver and sender overcomes the disadvantages of traditional GPR cable transmission system. STM32F407 chip and ATK-RM04 are core components of data sender. PC with a wireless network card is data receiver. System is designed with reference to C/S network model. Data receiver and sender are respectively developed with VC++ socket and RAW API of Lwip TCP/IP protocol stack. CP protocol is chosen as network transport protocol. Practical applications show that system can stably transmit data within 0m-20m and maximum loss rate is 0.005%. It is reliable and convenient for GPR’s application.

Head-Up Display System for Closed Circuit Rebreathers With Antimagnetic Wireless Data Transmission

2013 ◽  
Vol 47 (6) ◽  
pp. 42-51
Author(s):  
Arne Sieber ◽  
Andreas Schuster ◽  
Sebastian Reif ◽  
Dennis Madden ◽  
Peter Enoksson
Keyword(s):  
Data Transmission ◽  
Electromagnetic Waves ◽  
Sea Water ◽  
Low Frequency ◽  
Ultrasonic Waves ◽  
Limited Information ◽  
Wireless Data ◽  
Wireless Data Transmission ◽  
Field Of Vision ◽  
European Standards

AbstractRebreather divers use LED-based head-up displays (HUD) as a primary display and warning device for the partial pressure of O2 in the breathing loop. Such devices are usually mounted on the mouthpiece of the rebreather in the field of vision of the diver. LED-based HUDs are simple devices and can be designed so that they are easy to understand but have limited information content. Few alphanumeric or graphical screen-based HUDs have been developed in the past. Connecting such a device to a rebreather requires cable links, which divers dislike, and increases the risk of entanglement. State-of-the-art wireless data transmission uses ultrasonic waves or low-frequency electromagnetic waves; the former is not silent, and the latter achieves only very low data transmission rates of a few bytes per second and does not meet the antimagnetic standards required by military divers. The present paper describes a novel HUD system that incorporates a simple LED-based primary HUD along with an advanced secondary head-up diving computer with a micro organic LED screen. An optical infrared data transmission system is used to transmit all rebreather relevant data from the primary to the secondary device. One prototype of the system was manufactured and successfully tested in the laboratory according to relevant European standards as well as during several dives in fresh and sea water.

SoilComm: A miniaturized through-soil wireless data transmission system

2018 ◽  
Vol 144 (3) ◽  
pp. 1872-1872 ◽  
Author(s):  
Sijung Yang ◽  
Omar Baltaji ◽  
Youssef M. Hashash ◽  
Andrew Singer
Keyword(s):  
Data Transmission ◽  
Transmission System ◽  
Wireless Data ◽  
Wireless Data Transmission ◽  
Data Transmission System
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