Shandong Micro Sensor Photonics Ltd.

Jinan, China

Shandong Micro Sensor Photonics Ltd.

Jinan, China

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Zhang T.,Shandong Key Laboratory of Optical Fiber Sensor | Zhang T.,Shandong Academy of Sciences | Wei Y.,Shandong Key Laboratory of Optical Fiber Sensor | Wei Y.,Shandong Academy of Sciences | And 6 more authors.
Optics InfoBase Conference Papers | Year: 2016

The influence of offset on the detection accuracy of the CO detection system based on TDLAS has been researched and analyzed. It is concluded that the relative error of gas concentration is 0.16% when the offset difference is 1μV . It provides theoretical guidance and reference for the selection of components in gas detection system. © OSA 2016.


Yubin W.,Shandong Academy of Sciences | Yubin W.,Shandong micro sensor photonics Ltd | Weisong Z.,Shandong Academy of Sciences | Jie H.,Shandong micro sensor photonics Ltd | And 3 more authors.
Optics InfoBase Conference Papers | Year: 2016

Based on laser absorption spectroscopy and optical fibre sensing technology, this study proposed an optical fiber oxygen detection sensor. The system showed a good test results in the coal spontaneous combustion beam tube used. © OSA 2016.


Wang J.,Shandong Academy of Sciences | Deng X.,Yanzhou Coal Industry Company | Gong Z.,Yanzhou Coal Industry Company | Song G.,Shandong Academy of Sciences | And 3 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2013

The FBG strain sensors were used for on line monitoring of the stress variation of the lined wall in the gateway retained along goaf of No. 3203 coal mining face in the Dongtan Mine. The results showed that the FBG strain sensor with high measuring range could measure the stress variation accurately during the support process of the gateway retained along goaf and could provide the basis to further optimize the support structure and to determine the support plan of the gateway retained along the goaf. The FBG micro-seismic sensors were used in Xinglong Mine to detect micro-seismic signal. The signals are well received and analyzed to determine the location and energy level of the source of the microseismic event warning. The FBG sensors and detecting system show significant potential for micro-seismic detection and geological disasters detecting. © 2013 SPIE.


Wang J.-Y.,Shandong Academy of Sciences | Liu T.-Y.,Shandong Micro Sensor Photonics Ltd. | Wang C.,Shandong Academy of Sciences | Liu X.-H.,Shandong Academy of Sciences | And 2 more authors.
Measurement Science and Technology | Year: 2010

In this work a micro-seismic fiber Bragg grating (FBG) sensor system based on a narrow linewidth distributed feedback (DFB) laser is investigated. By automatic control of the temperature of the DFB laser, the wavelength of the laser can be locked in the -3 dB reflectivity spectrum of the FBG. So the FBG sensor system can be made immune to temperature. Using the reference channel, the measurement precision of the system is improved by wiping out the power noise of the DFB laser. Experiments on the sensor system's frequency character and linearity have been performed. Results show that this sensor has the smallest acceleration of 1 mm s-2. © 2010 IOP Publishing Ltd.


Wang J.,Shandong Academy of Sciences | Hu B.,Shandong Academy of Sciences | Li W.,China Yankuang Group | Song G.,Shandong Academy of Sciences | And 3 more authors.
Measurement: Journal of the International Measurement Confederation | Year: 2016

The fiber Bragg grating geophone sensor with higher sensitivity and wider frequency range was reported. The methods to increase the sensitivity of the FBG cantilever sensor were presented. The acceleration sensitivity of the optimized FBG geophone is 220 pm/g, and the resonant frequency can reach to 295 Hz. The experiments show that the FBG geophone system has the minimum detectable acceleration of 1 mm/s2. Some factual application examples of using this fiber Bragg grating geophone monitoring system for micro seismic monitoring in coal mine were presented. © 2015 Elsevier Ltd.


Wang J.,Shandong Academy of Sciences | Liu T.,Shandong Academy of Sciences | Liu T.,Shandong Micro Sensor Photonics Ltd. | Song G.,Shandong Academy of Sciences | And 4 more authors.
Photonic Sensors | Year: 2014

The fiber Bragg grating (FBG) strain sensors were used for on-line monitoring of the stress variation of the lined wall in the gateway retained along the goaf of No. 3203 coal mining face in Dongtan Mine. The results showed that the FBG strain sensor with the wide measuring range could measure the stress variation accurately during the support process of the gateway retained along the goaf and could provide the basis to further optimize the support structure and to determine the support plan of the gateway retained along the goaf. The FBG micro-seismic sensors were used in Xinglong Mine to detect the micro-seismic signal. The signals were well received and analyzed to determine the location and energy level of the source of the micro-seismic event warning. The FBG sensors and detecting system show a significant potential for micro-seismic detection and geological disasters detection. © 2014 The Authors(s).


Wang J.-Y.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Wang J.-Y.,Shandong Academy of Sciences | Qi H.-F.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Qi H.-F.,Shandong Academy of Sciences | And 7 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

A high sensitive fiber Bragg grating (FBG) geophone detecting system based on narrow line width distributed feedback (DFB) laser is realized by using filtering demodulation. Sensitivity of FBG geophone lies on the structure of the sensor shell and the shape of the reflectivity spectrum of FBG. Experiments on the detecting system's frequency character have been done. Results show that this geophone can detect the smallest acceleration of 1mm/s2 with a flat response from 5Hz to 40Hz.. The experiments on coal mine exhibit that the geophone can be used to measure microseismic signals. The detecting system shows great prospect in micro-seismic detection, and geological disasters detecting. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).


Wang J.-Y.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Wang J.-Y.,Shandong Academy of Sciences | Jie H.,Shandong Micro Sensor Photonics Ltd | Song G.-D.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | And 6 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

A high sensitive fiber Bragg grating (FBG) acceleration sensor based on filtering demodulation is analyzed on sensitivity, resolution and temperature experiment. Sensitivity and resolution of FBG sensor lies on the structure of the sensor shell and the shape of the reflectivity spectrum of FBG. The temperature experiments of the FBG sensor show the work and storing temperature range of the sensor based on different preparing stress and packaging glue. Experiments on the detecting system's frequency character have been done. Results show that this acceleration sensor can detect the smallest acceleration of 1mm/s2 with a flat response from 5Hz to 40Hz. © 2012 SPIE.


Hu B.,Shandong Academy of Sciences | Jin G.,Shandong Micro sensor Photonics Co. | Liu T.,Shandong Micro sensor Photonics Co. | Wang J.,Shandong Academy of Sciences
Photonic Sensors | Year: 2016

This paper presents the development of a cost-effective precision fiber Bragg grating (FBG) interrogation system using long-wavelength vertical-cavity surface-emitting laser (VCSEL). Tuning properties of a long-wavelength VCSEL have been studied experimentally. An approximately quadratic dependence of its wavelength on the injection current has been observed. The overall design and key operations of this system including intensity normalization, peak detection, and quadratic curve fitting are introduced in detail. The results show that the system achieves an accuracy of 1.2 pm with a tuning range of 3 nm and a tuning rate of 1 kHz. It is demonstrated that this system is practical and effective by applied in the FBG transformer temperature monitoring. © 2016, The Author(s).


Liu T.,Shandong Micro Sensor Photonics Ltd | Liu T.,Shandong Academy of Sciences | Li W.,Yankuang Group | Meng X.,Yankuang Group | And 4 more authors.
Proceedings of the 2015 International Conference on Microwave and Photonics, ICMAP 2015 | Year: 2015

Coal mine combustion is major safety hazard, which is conventionally detected by monitoring characteristic gases such as CO, C2H4 and C2H2, using a tubing bundle gas sampling system and gas chromatograph mess spectrometer. IR gas sensors have been developed to overcome the complexity and cumbersomeness of the GC analyzer, however, cross sensitivity among gases in the IR region affects the detection sensitivity and reliability. Fiber optic multi-gas sensors have been developed which provides advantage of real time detection, low cross sensitivity and low cost for coal mine combustion detection. We report latest development of a multi-gas sensor which has sub-ppm detection sensitivity. The sensors exhibit great potential for on site real time gas monitoring in coal mines and offer the advantage of early detection and warning of coal combustion. © 2015 IEEE.

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