Unlock instant, AI-driven research and patent intelligence for your innovation.

Multivariable Distributed Online Monitoring System Based on Wireless Sensor Network

A wireless sensor network and monitoring system technology, applied in the field of multi-variable distributed online monitoring system, can solve the problems of no engineering structural disease and reflective structural damage, and achieve the effect of real-time monitoring

Active Publication Date: 2016-04-13
WUHAN UNIV
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no online monitoring of the vibration time history, dynamic stress / strain and other multivariate information of the actual engineering structure to obtain the whole process data of disaster formation, engineering structure disease and structural damage

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multivariable Distributed Online Monitoring System Based on Wireless Sensor Network
  • Multivariable Distributed Online Monitoring System Based on Wireless Sensor Network
  • Multivariable Distributed Online Monitoring System Based on Wireless Sensor Network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The system of the present invention was applied to a transmission line in Guangdong Province from July to November 2012. It uses solar panels and lithium batteries to supply power, and uses acceleration sensor nodes to regularly transmit the collected vibration data of the transmission line to the ground base station. Taking the 49# tower without damper of the transmission line as an example, the wind vibration time domain history of Zhanjiang (in the direction along the line) was obtained from 10:00 to 18:00 on the 17th of 2012, see Image 6 . This figure can verify the reliability of the system of the present invention in the wind-vibration environment and the validity of data collection. The invention can provide an effective technical means for the early warning mechanism of disasters such as wind-induced wireless monitoring of power transmission lines and wind-induced collapse of towers.

Embodiment 2

[0067] The system of the present invention was successively applied to the gate monitoring of several hydropower stations in China from September to December 2012. The distribution of sensor nodes is shown in Figure 7 As shown in the figure, 1~6 in the figure represent the sensor layout corresponding to No. 1~6 lower computers respectively. Acceleration sensors are used to monitor the rising and falling process of the gate, and the monitored data are transmitted back to the ground base station in real time to generate a real-time information map of the gate's take-off and landing process. The vibration time history curve of the fourth measuring point of the No. 3 lower computer is shown in Figure 8 As shown, the abscissa is Beijing time. The reliability of the method of the invention and the validity of data collection in complex electromagnetic environment, high humidity and strong vibration environment are verified. The invention can retain the time domain and frequency d...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a multivariable distributed type online monitoring system based on a wireless sensor network. The multivariable distributed type online monitoring system based on the wireless sensor network comprises an upper computer and a lower computer. The lower computer comprises a central control module, a radio frequency transport module, a data collecting module and a power management module, wherein the central control module comprises a processor, a peripheral circuit and a storage module. The data collecting module comprises a multivariable information collecting unit, a multichannel signal transmission unit and a signal processing unit. The multivariable information collecting unit is various types of sensors distributed on each collecting point. The multichannel signal transmission unit is used for correspondingly transferring various types of data signals. An analogue signal and digital signal (AD) conversion module is arranged between the data collecting module and the central control module. According to the multivariable distributed type online monitoring system based on the wireless sensor network, wireless sensor network technology based on a ZigBee protocol is adopted. The multivariable distributed type online monitoring system based on the wireless sensor network is capable of monitoring multivariable information such as vibration time process, dynamic strain / stress, temperature and pressure in an online mode.

Description

technical field [0001] The invention relates to the technical field of wireless sensing and communication, in particular to a multivariable distributed online monitoring system based on a wireless sensor network. Background technique [0002] Electric power engineering and water conservancy projects are important basic industries and public utilities related to the national economy and people's livelihood. Their safe and stable operation is an important guarantee for the comprehensive, coordinated and sustainable development of the national economy. [0003] Transmission lines, especially high-voltage overhead transmission lines, are the lifeblood of power systems, and their operating conditions directly affect the safety and stability of power grid operations. Natural disasters such as icing and typhoon are one of the common safety hazards of transmission lines. In recent years, with the emergence of extreme climates around the world, wind and ice disasters on transmission ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/00H04W84/18
Inventor 肖晓晖宋云超陆荣信徐俊凌杰朱泽群
Owner WUHAN UNIV