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 | Jiang L.,Shandong Micro Sensor Photonics Ltd | Sun Z.,Shandong Shenglong Safe Technology Co. | Hu B.,Shandong Academy of Sciences | And 6 more authors.
Photonic Sensors | Year: 2017

In order to monitor the process of surface subsidence caused by mining in real time, we reported two types of fiber Bragg grating (FBG) based sensors. The principles of the FBG-based displacement sensor and the FBG-based micro-seismic sensor were described. The surface subsidence monitoring system based on the FBG sensing technology was designed. Some factual application of using these FBG-based sensors for subsidence monitoring in iron mines was presented. © 2016, The Author(s).


Wei Y.,Shandong Key Laboratory of Optical Fiber Sensor | Wei Y.,Shandong Micro sensor Photonics Ltd | Hu J.,Jining Anran Intelligent Technology Photonics Ltd | Zhang T.,Shandong Key Laboratory of Optical Fiber Sensor | And 2 more authors.
Proceedings - 2017 2nd International Conference of Fibre-Optic and Photonic Sensors for Industrial and Safety Applications, OFSIS 2017 | Year: 2017

Due to the coal mine safety requirements for a new generation of methane sensor in recent years, coal mine methane sensor laser has attracted more and more attention. Based on the principle of laser absorption spectroscopy, mine laser methane sensor was developed, a series of detailed performance test were carried out. Compared with traditional catalytic combustion sensor and infrared sensor, laser methane sensor has many advantages, such as large range, high precision, low power consumption and calibration free. In the application of the coal mine safety monitoring, the superior performance of the laser methane sensor has been verified, and it has good application prospects. © 2017 IEEE.


Zhao L.,Shandong Academy of Sciences | Jiang L.,Shandong Micro sensor Photonics Ltd | Li L.,Shandong Micro sensor Photonics Ltd
Yadian Yu Shengguang/Piezoelectrics and Acoustooptics | Year: 2017

According to the demand of pressure monitoring in the field of energy and chemical industry, and combining with the dual fiber Bragg grating(FBG) sensing principle, a fiber grating pressure sensor to meet the practical engineering application has been designed in this work. The sensing structure combined with a bellows and a cantilever beam, the problem of cross sensitivity of temperature on pressure measurement was disappeared, and the sensing characteristics of the sensor was analyzed through detailed theory and calibration experiment. The results show that the sensor has the advantages of self temperature compensation, good linearity and repeatability, high precision and so on, especially suitable for oil, coal, chemical and other flammable and explosive environment pressure monitoring, and has a good application prospects. © 2017, Editorial Department of Journal of Piezoelectric and Acoustooptic. All right reserved.


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).


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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