scholarly journals Wireless Environmental Monitoring Device

2011 ◽  
Vol 15 ◽  
pp. 2469-2473
Author(s):  
Rui Jiang ◽  
Yaqi Xu ◽  
Zhen Huang ◽  
Zheng Ma
Keyword(s):  
Environmental Monitoring ◽  
Monitoring Device

scholarly journals Power supply for on-line monitoring device of power lines based on double-half ring core

2021 ◽  
Vol 336 ◽  
pp. 05023
Author(s):  
Kaijin Xue ◽  
Jieyu Liu ◽  
Naidi Kang ◽  
Yujia Zhao ◽  
Yan Zhao ◽  
...  
Keyword(s):  
Transmission Line ◽  
Power Supply ◽  
Electronic Equipment ◽  
Iron Core ◽  
Stable Operation ◽  
Monitoring Device ◽  
On Line ◽  
Reliable Power Supply ◽  
Energy Absorbing ◽  
Monitoring Devices

In order to solve the problem of insufficient energy supply of the on-line monitoring device of the transmission line, a sensor energy acquisition scheme directly installed on the transmission line is proposed. In the current power supply, induction power supply is a kind of energy extraction method with better practical applicability. Since the monitoring devices and electronic equipment on the transmission line are often in a strong magnetic field and high voltage environment, designing a stable and reliable power supply is the guarantee for the stable operation of the monitoring devices and electronic equipment. This paper presents a structure of energy-absorbing iron core with two semi-circular magnetic cores, and studies the magnetic saturation problem in the inductive power supply and the design of the DC output circuit.

scholarly journals On the Power of Microwave Communication Data to Monitor Rain for Agricultural Needs in Africa

Water ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 730
Author(s):  
Noam David ◽  
Yanyan Liu ◽  
Kingsley K. Kumah ◽  
Joost C. B. Hoedjes ◽  
Bob Z. Su ◽  
...  
Keyword(s):  
Internet Of Things ◽  
Environmental Monitoring ◽  
Cellular Network ◽  
Data Transfer ◽  
Base Stations ◽  
Monitoring Device ◽  
Spatial Coverage ◽  
Microwave Communication ◽  
Wireless Infrastructure ◽  
Commercial Microwave Links

Over the last two decades, prevalent technologies and Internet of Things (IoT) systems have been found to have potential for carrying out environmental monitoring. The data generated from these infrastructures are readily available and have the potential to provide massive spatial coverage. The costs involved in using these data are minimal since the records are already generated for the original uses of these systems. Commercial microwave links, which provide the underlying framework for data transfer between cellular network base stations, are one example of such a system and have been found useful for monitoring rainfall. Wireless infrastructure of this kind is deployed widely by communication providers across Africa and can thus be used as a rainfall monitoring device to complement the sparse proprietary resources that currently exist or to substitute for them where alternatives do not exist. Here we focus this approach’s potential to acquire valuable information required for agricultural needs across Africa using Kenya as an example.

Application of Fiber Bragg Grating Device in Icing Monitoring System of Transmission Lines

2014 ◽  
Vol 543-547 ◽  
pp. 1030-1034 ◽  
Author(s):  
Feng Lian Liu ◽  
Li Rui Guo ◽  
Yuan Shi Deng ◽  
Chi Wu ◽  
Jiang Ling Li ◽  
...  
Keyword(s):  
Transmission Line ◽  
Fiber Bragg Grating ◽  
Transmission Lines ◽  
Electromagnetic Interference ◽  
Bragg Grating ◽  
Stable Operation ◽  
Monitoring Device ◽  
Active Sensors ◽  
Bragg Grating Sensor ◽  
Monitoring Devices

Ice accretion has been a huge threat for the stable operation of transmission line. Icing monitoring devices used presently are active sensors with low working stability. Signals are transmitted in the electrical form, which are easily affected by the electromagnetic interference. In this paper, an online icing monitoring device of transmission line based on fiber bragg grating (FBG) sensor is designed, and is operated as a pilot unit on the 44# tower of 110kV Zhenzou line. Experimental results show that the online icing monitoring device operates stably, and the designed fiber bragg grating sensor has high linearity, good sensitivity and high accuracy.

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