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In order to solve the big randomness of water leakage interference information in cabin water leakage test, which led to frequent false alarm problem, This paper presents a water leakage position location algorithm based on Gauss distribution function. The hardware is designed by Using TT1000 water leakage sensor and CCC2430 wireless sensor and study of the Gauss distribution function theory. The...
This essay aims at solving the problems such as low efficiency, high-error rates and inadequate real-time data acquisitions when using a portable soil electrical conductivity meter. Based on the theory of multi-sensor data fusion, a new method of measurement of soil electrical conductivity is given, with which soil electrical conductivity can be measured with the single sensor fusion algorithm of...
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...
A system of collection and control for gas information based on GPRS is designed for the purpose of gas safe in this paper. The design of data acquisition and control system hardware and software, design of network security data transmission and the software design of the control center are researched mainly by the paper. The remote monitoring and control to gas pipelines and gas storage facilities...
The compressive strength and microstructural characteristics of class C fly ash based geopolymer activated with sodium silicate powder were investigated. The geopolymer samples with the highest strength 44.6MPa were obtained when the mass ratio of water to milled fly ash (W/F) was 0.28 and then followed by curing at 70°C for 30h. In the XRD patterns, many crystalline zeolithic phases were found. The...
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...
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