Jinming Huo’s scientific contributions

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Publications (2)


Experimental design of gas monitoring system in mine safety helmet based on wireless sensors networks
  • Article

August 2011

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22 Reads

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5 Citations

Chunlong Ma

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Jinming Huo

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Xiaohui Yang

In order to solve such problems of the mine cable gas monitoring system as high costs, inconvenient maintenance, hindering wiring and unmovable monitoring information points, a mine safety helmet is designed, based on wireless sensors networks, which studies the hardware design, gas concentration calculations and its dynamic compensation algorithm, as well as the experimental design of gas monitoring system in mine safety helmet so as to ensure the correct calculation of the gas concentration. The innovative point of this essay is the combination of the ordinary LED cap lamp and the wireless sensors networks, which ensures a real-time, dynamic collection ofthe information of the gas concentration around the workers. Most of the present mine gas monitoring networks are designed to transmit data through cables, which has such defects as high costs, inconvenient maintenance, no timely follow-up of the sink node with the mining progress and being unable to change its position as miners move around, and no timely collection of the information surroundings the miners. Most of the miners' safety helmet can only provide them with illumination and safety protection. This essay aims to combine miners' safety helmet with the gas monitoring networks and establish a real-time collection of the information surrounding the miners. When the gas exceeds criterion, an on-the-spot alarming occurs, meanwhile, the alarming information will be transmitted to the ground commanding center, which commands all the workers to evacuate from the worksite. And this system bolsters the ability to resist and reduce disasters(1).


Negative pressure wave-flow testing gas pipeline leak based on wavelet transform

August 2010

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161 Reads

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24 Citations

To solve the problem of high false alarm rate and low positioning accuracy in the gas leak location detection, a new method is designed, in which wavelet transform is used to extract gas leak negative pressure wave signal, the gas leaks and positioning can be detected by using the method of negative pressure wave combined with flow balance. An algorithm of extracting negative pressure signal through wavelet transform is proposed and a method of negative pressure signal-flow rate detecting and positioning is provided. A negative pressure wave-flow testing gas pipeline leak system based on wavelet transform is designed. The positioning accuracy of the system reaches ± 1% of pipe length, and the false alarm rate is reduced.

Citations (1)


... The time difference of arrival (TDOA) at the ends of the pipeline can be employed to locate the leak [11]. Based on this principle, Ma et al. [12] estimated the leak location with an error down to 1% of the pipeline length for an elastic gas pipe with a length of 20.6 m. To enhance the leak localization accuracy, the pipeline material and gas properties should be accounted as well. ...

Reference:

Modelling and quantification of measurement uncertainty for leak localisation in a gas pipeline
Negative pressure wave-flow testing gas pipeline leak based on wavelet transform
  • Citing Article
  • August 2010