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Li D.,China University of Mining and Technology | Qian J.-S.,China University of Mining and Technology | Liu Z.-B.,Yanzhou Coal Mining Group Co. | Yang P.,Yanzhou Coal Mining Group Co.
Meitan Xuebao/Journal of the China Coal Society | Year: 2011

Proposed a new stitching algorithm to suit for noisy, uneven illumination complex environment of coal mine which traditional stitching algorithm does not apply. Key frames were abstract to stitch video images. Overlapping regions and frames in confusion were checked and ordered by phase correlation impulse function energy. Statistical sample principal component analysis was brought to SIFT feature vector dimension reduction with new samples of unrelated information to describe the original sample information, so feature vector generation time could be reduced. Multi-band lifting wavelet transform scheme was used to achieve smooth stitching by defining the fusion rules and selecting the right fusion strategy. Experiments show that the new algorithm improves the matching efficiency under no manual sorting, solves the problems of false matching easily and stitching juncture obviously phenomena. Smooth and natural stitching result is suit for coal mine environment.


Guo X.,China University of Mining and Technology | Dong C.,Yanzhou Coal Mining Group Co.
Proceedings - 4th International Conference on Genetic and Evolutionary Computing, ICGEC 2010 | Year: 2010

In this paper, based on requirements of wireless Mesh network Multi-service and high speed, Is proposed based on more access control technology and the QoS control technology of new wireless resource allocation methods of the upward, To better solve the uplink bandwidths business concurrently, And both to delay and bandwidth requirements, improving the bandwidth of the system. Finally, simulation results show its performance. © 2010 IEEE.


Zhao P.,China University of Mining and Technology | Dong C.,Yanzhou Coal Mining Group Co.
Proceedings - 4th International Conference on Genetic and Evolutionary Computing, ICGEC 2010 | Year: 2010

This paper proposes the Distributional Load-Equalization Routing Protocol (DLER) in wireless Mesh network. The protocol is improved on the basis of the ADOV Protocol in Ad-Hoc and realizes the communication between two wireless clients in different BSS (Basic Service Set) by wireless relaying. The use of exchanging the link loss information between central nodes can realize the dynamical load balance, suppress dissemination of the redundant routing information effectively, eliminate the routing loop and establish the backup route. The result of simulation shows that DLER Protocol has good characteristics for routing and low delay. © 2010 IEEE.


Jiang M.,Shandong University | Jiang M.,Yanzhou Coal Mining Group Co. | Sui Q.,Shandong University | Jia L.,Shandong University | And 2 more authors.
Optoelectronics Letters | Year: 2012

The ultrasonic (US) wave detection and an acoustic emission (AE) linear location system are proposed, which employ fiber Bragg gratings (FBGs) as US wave sensors. In the theoretical analysis, the FBG sensor response to longitudinal US wave is investigated. The result indicates that the FBG wavelength can be modulated as static case when the grating length is much shorter than US wavelength. The experimental results of standard sinusoidal and spindle wave test agree well with the generated signal. Further research using two FBGs for realizing linear location is also achieved. The maximum linear location error is obtained as less than 5 mm. FBG-based US wave sensor and AE linear location provide useful tools for specific requirements. © 2012 Tianjin University of Technology and Springer-Verlag Berlin Heidelberg.


Ni X.-H.,Yanzhou Coal Mining Group Co.
Meitan Xuebao/Journal of the China Coal Society | Year: 2010

In order to solve the backwardness of the traditional mine auxiliary transportation technology and equipment which would restrict the construction and development of the safety and high efficient mine, based on the full investigation and in combination with the actual conditions of Yanzhou Mining Area, provided the development plan of the safety and high efficient mine auxiliary transportation technology in Yanzhou Mining Area. On the one hand, the mine (and mining block) development layout was optimized, the arrangement mode of the mine roadway was reformed and the auxiliary transportation system was simplified in order to create the conditions to promote and apply the high efficient auxiliary transportation technology and equipment;On the other hand, the research, development, test and promotion were actively and stably conducted on the key technology of the safety and high efficient mine auxiliary transportation and the development of the auxiliary transportation mechanization was highly promoted. The development plan was applied to Ynazhou Mining Area. The comparison between the statistic data from 2001 to 2009 shows that the safety situation of the mine auxiliary transportation is steadily improved, the personnel members working in the mine auxiliary transportation is annually reduced in the percentage of the raw coal production members, the auxiliary transportation efficiency is obviously improved and the physical power consumption and the time of the walking on the road for the miners is highly reduced.


Huang F.-C.,Yanzhou Coal Mining Group Co.
Meitan Xuebao/Journal of the China Coal Society | Year: 2010

The development course of the fully mechanized top coal caving mining technology in Yanzhou mining area was briefly stated from the three stages. The three stages were including the experiment and promotion stage (from 1992 to 1994), the well improvement stage (from 1995 to 1998) and the innovation development stage (from 1999 to today). Ten main technical achievements and the matched equipment features obtained from the development process of the fully mechanized top coal caving mining technology were expounded in detail. Finally the future development orientation of the fully mechanized top coal caving mining in Yanzhou mining area was provided. (1) The innovation research on the applied technology of the fully mechanized top coal caving mining shall be further conducted, the experts system of the fully mechanized top coal caving mining shall be improved, the decision-making scientification of the management system could be realized and the application scope of the fully mechanized top coal caving mining technology shall be further expanded. (2) The road of the automation and information shall be insisted in order to further improve the equipment and technology level of the fully mechanized top coal caving mining. (3) The development research on the guarantee technology system of the fully mechanized top coal caving mining shall be enhanced.


Jiang M.-S.,Shandong University | Jiang M.-S.,Yanzhou Coal Mining Group Co. | Meng L.,Shandong University | Sui Q.-M.,Shandong University | And 2 more authors.
Guangdianzi Jiguang/Journal of Optoelectronics Laser | Year: 2011

The fiber Bragg grating (FBG) vibration system demodulated by double-long period fiber grating (LPFG) is proposed based on the edge filter analysis. The double-LPFG is adopted as filter after the transmission spectra super positioned, in order to improve the demodulation sensitivity. The static experiments illustrate that the demodulated sensitivities using single-and double-LPFG as filter are -1.1965 dB/nm and -2.4836 dB/nm, respectively. The demodulation sensitivity of the double-LPFG filter is about twice of that of the single-LPFG filter. The FBG vibration frequency detection experiments are carried out using double-LPFG as filter. Experimental results demonstrate that the acquired frequency and impact response signal and the fast Fourier transform of the signal detected by the designed system agree well with the imposed excitation signal. In addition, the impulse response performance is also good.


Pang D.-D.,Shandong University | Sui Q.-M.,Shandong University | Jiang M.-S.,Shandong University | Jiang M.-S.,Yanzhou Coal Mining Group Co.
Guangdianzi Jiguang/Journal of Optoelectronics Laser | Year: 2011

Traditional high temperature sensors are unsuitable for high temperature real-time online measurement. In order to solve the problem, a novel high temperature resistant fiber Bragg grating(FBG) sensing system based on wavelength modulation is developed. A new packaged high temperature-resistant FBG sensor head is designed in this system, which is small in volume and has high sensitivity and good linearity. The diffraction technique based on InGaAs image sensor is used to demodulate the reflected wavelength. The response time is reduced and the accuracy and stability are improved. The experimental results indicate that the system has linearity of 0.9992, sensitivity of 0.0259 nm/°C, accuracy of ±0.6°C, resolution of 0.1°C and response time of less than 15 s in the range of 20-290°C. The stability experiment also shows that the maximum temperature fluctuation is ±0.7°C.


Jiang M.-S.,Shandong University | Jiang M.-S.,Yanzhou Coal Mining Group Co. | Meng L.,Shandong University | Sui Q.-M.,Shandong University | And 2 more authors.
Guangdianzi Jiguang/Journal of Optoelectronics Laser | Year: 2011

A novel double-edged filter wavelength interrogation scheme for FBGs is designed based on mechanical-induced long period gratings MI-LPGs. Two LPGs, which have symmetrical overlap resonant sideband, the same resonant peak and bandwidth, are fabricated as filters under different parameters. When FBG reflection signals get through different spectral characteristic filters, the demodulation system will output two intensity different lights. Logarithmic algorithm is adopted due to the ratio between the two output lights. Experiments show that FBG sensing signals interrogation can be realized stability and accurately. And the demodulation dynamic range is up to 5 nm. The mean square between demodulation system linear fitting calculated wavelength value and Spectrometer measurement value is 6 pm. Excellent Linearity and high precision of designed system is proved.


Pang D.,Shandong University | Sui Q.,Shandong University | Jiang M.,Shandong University | Jiang M.,Yanzhou Coal Mining Group Co.
Zhongguo Jiguang/Chinese Journal of Lasers | Year: 2011

A high temperature fiber Bragg grating (FBG) sensing network based on wavelength modulation is highly developed on the basis of FBG high temperature sensing characters. A new packaged high temperature FBG sensor head is designed in this system. A high reliable distributed sensing network structure is also proposed to overcome the low reliability of the traditional FBG sensing network. Diffraction technique based on InGaAs image sensing is used to demodulate reflected wavelength. The results show that the average goodness-of-fit of sensing system's temperature curve is 0.9991, the sensitivity is 0.0258 nm/°C, the accuracy is ±0.6°C and the response time is less than 16 s. Moreover, the sensing network is steady enough for high temperature measurement.

Loading Yanzhou Coal Mining Group Co. collaborators
Loading Yanzhou Coal Mining Group Co. collaborators