Patents by Inventor Shaoyi Xu

Shaoyi Xu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230370075
    Abstract: A method for implementing an atomic clock based on NV-14N coupling spin system in diamond and a device are provided. The method is to lock a RF frequency using a 14N zero-field splitting and output the RF frequency as a frequency standard. The method includes: applying a pulse sequence to jointly initialize NV electron spins and 14N nuclear spins; performing a Ramsey interferometry to compare a RF frequency and a 14N zero-field splitting; entangling the NV electron spin and the nuclear spin, reading out a state of nuclear spins by collecting a fluorescence signal; calculating a frequency difference between the RF frequency and the 14N zero-field splitting according to the fluorescence signal, thereby locking the RF frequency to the 14N zero-field splitting; and outputting the RF frequency as a frequency standard.
    Type: Application
    Filed: June 7, 2021
    Publication date: November 16, 2023
    Inventors: Tianyu Xie, Shaoyi Xu, Zhiyuan Zhao, Fazhan Shi, Jiangfeng Du
  • Publication number: 20230370074
    Abstract: A method for implementing an atomic clock based on NV-15N coupling spin system in diamond and a device are provided. The method includes: applying a pulse sequence to jointly initialize NV electron spins and 15N nuclear spins; performing a Ramsey interferometry to compare a RF frequency and a 15N hyperfine coupling; entangling the NV electron spin and the nuclear spin, reading out a state of nuclear spins by collecting a fluorescence signal; calculating a frequency difference between the RF frequency and the 15N hyperfine coupling according to the fluorescence signal, thereby locking the RF frequency to the 15N hyperfine coupling; and outputting the RF frequency as a frequency standard. This system is located in a stable solid environment and is not affected by environmental conditions such as an external magnetic field, electric field, and temperature, and therefore it has an excellent robustness. Various components of the device may be integrated into several chips to miniaturize a diamond atomic clock.
    Type: Application
    Filed: June 7, 2021
    Publication date: November 16, 2023
    Inventors: Shaoyi Xu, Tianyu Xie, Zhiyuan Zhao, Fazhan Shi, Jiangfeng Du
  • Patent number: 11761334
    Abstract: An apparatus includes a current excitation source, a roadheader telescopic protection cylinder, an electric rotating apparatus, auxiliary cutting teeth, a cutting head entity, a transmission shaft, an optical fiber ring protective housing, an optical fiber ring, an optical fiber current sensor control unit and a recovery electrode. The apparatus transmits an auxiliary current Ie and a monitoring current Id to a coal seam. The auxiliary current Ie and the monitoring current Id are homologous currents that are incompatible, and the auxiliary current Ie squeezes the monitoring current Id, so the monitoring current Id monitors the environment of the coal seam. The monitoring current Id flows to the coal seam as, and a return current If flows through the transmission shaft and a roadheader expansion part. The optical fiber ring measures the return current If, when the roadheader is heading forward and encounters abnormal geological bodies.
    Type: Grant
    Filed: January 17, 2022
    Date of Patent: September 19, 2023
    Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
    Inventors: Shaoyi Xu, Zhencai Zhu, Wei Li, Wenting Lu, Gang Shen, Songyong Liu, Fangfang Xing, Hongxiang Jiang, Lei Si
  • Publication number: 20230127366
    Abstract: An apparatus includes a current excitation source, a roadheader telescopic protection cylinder, an electric rotating apparatus, auxiliary cutting teeth, a cutting head entity, a transmission shaft, an optical fiber ring protective housing, an optical fiber ring, an optical fiber current sensor control unit and a recovery electrode. The apparatus transmits an auxiliary current Ie and a monitoring current Id to a coal seam. The auxiliary current Ie and the monitoring current Id are homologous currents that are incompatible, and the auxiliary current Ie squeezes the monitoring current Id, so the monitoring current Id monitors the environment of the coal seam. The monitoring current Id flows to the coal seam as, and a return current If flows through the transmission shaft and a roadheader expansion part. The optical fiber ring measures the return current If, when the roadheader is heading forward and encounters abnormal geological bodies.
    Type: Application
    Filed: January 17, 2022
    Publication date: April 27, 2023
    Inventors: Shaoyi XU, Zhencai ZHU, Wei LI, Wenting LU, Gang SHEN, Songyong LIU, Fangfang XING, Hongxiang JIANG, Lei SI
  • Patent number: 11402196
    Abstract: Disclosed is a device and method for distributed detection of straightness of a working face of a scraper conveyor based on optical fiber sensing. The device includes a broadband light source, a first optical fiber circulator array, a second optical fiber circulator array, a collimator array, a reflecting film array, a third optical fiber circulator array, and an optical path analyzer. During transmission of light emitted from the broadband light source, the light with different wavelengths is separated via several optical gratings etched on a single-mode optical fiber (SMF), and reaches reflecting films adhered to the working face of the scraper conveyor through first optical fiber circulators, second optical fiber circulators, and collimators. The light with the different wavelengths is then reflected back from the reflecting films, enters the SMF through third optical fiber circulators, and finally enters the optical path analyzer.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: August 2, 2022
    Assignee: China University of Mining and Technology
    Inventors: Shaoyi Xu, Zhencai Zhu, Wei Li, Yuqiao Wang, Fangfang Xing, Hongyu Xue, Qiang Peng, Feng Dong, Guang Chen
  • Publication number: 20220144554
    Abstract: Disclosed is a device and method for distributed detection of straightness of a working face of a scraper conveyor based on optical fiber sensing. The device includes a broadband light source, a first optical fiber circulator array, a second optical fiber circulator array, a collimator array, a reflecting film array, a third optical fiber circulator array, and an optical path analyzer. During transmission of light emitted from the broadband light source, the light with different wavelengths is separated via several optical gratings etched on a single-mode optical fiber (SMF), and reaches reflecting films adhered to the working face of the scraper conveyor through first optical fiber circulators, second optical fiber circulators, and collimators. The light with the different wavelengths is then reflected back from the reflecting films, enters the SMF through third optical fiber circulators, and finally enters the optical path analyzer.
    Type: Application
    Filed: April 21, 2020
    Publication date: May 12, 2022
    Applicant: China University of Mining and Technology
    Inventors: Shaoyi XU, Zhencai ZHU, Wei LI, Yuqiao WANG, Fangfang XING, Hongyu XUE, Qiang PENG, Feng DONG, Guang CHEN
  • Patent number: 11307025
    Abstract: A device and method for detecting an angle of a shearer rocker arm based on optical fiber sensing. The device includes an optical system and a mechanical system. The optical system includes a broadband light source, a polarizer, collimating lenses, a gradient-rotation media plate, a polarization beam splitter, and a data processing module. The mechanical system includes a connecting base, connecting rods, a slider, a bracket, and a sensor housing. When the shearer operates, the rocker arm converts rotation angle information to linear displacement related to a gradient refractive index by using a connecting rod mechanism, and a position on the gradient-rotation media plate through which linearly polarized light produced by the optical system passes also changes. Due to an optical rotation effect, corresponding rotation angles of a plane of polarization that are formed after the light passing through the gradient-rotation media plate also vary.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: April 19, 2022
    Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
    Inventors: Shaoyi Xu, Zhencai Zhu, Wei Li, Fangfang Xing, Yuqiao Wang, Hongyu Xue, Qiang Peng, Guang Chen, Feng Dong
  • Publication number: 20220042793
    Abstract: A device and method for detecting an angle of a shearer rocker arm based on optical fiber sensing. The device includes an optical system and a mechanical system. The optical system includes a broadband light source, a polarizer, collimating lenses, a gradient-rotation media plate, a polarization beam splitter, and a data processing module. The mechanical system includes a connecting base, connecting rods, a slider, a bracket, and a sensor housing. When the shearer operates, the rocker arm converts rotation angle information to linear displacement related to a gradient refractive index by using a connecting rod mechanism, and a position on the gradient-rotation media plate through which linearly polarized light produced by the optical system passes also changes. Due to an optical rotation effect, corresponding rotation angles of a plane of polarization that are formed after the light passing through the gradient-rotation media plate also vary.
    Type: Application
    Filed: July 7, 2020
    Publication date: February 10, 2022
    Inventors: Shaoyi XU, Zhencai ZHU, Wei LI, Fangfang XING, Yuqiao WANG, Hongyu XUE, Qiang PENG, Guang CHEN, Feng DONG
  • Patent number: 11099146
    Abstract: When the heading machine tunnels, a current generated by a current excitation source enters a coal seam through a movable cutting pick to form a stray current. The stray current collected by a backflow net returns to a negative electrode of a power supply through a transition resistor. When information such as the water content of the coal seam changes, the stray current and a potential difference across the transition resistor also accordingly change, and the coal seam water content information is converted into an electric signal. When the potential difference across the transition resistor is applied to two ends of a piezoelectric ceramic, the piezoelectric ceramic extends or compresses, and the electric signal is converted into a strain signal. A sensing optical fiber converts the strain signal into an optical signal detectable by a photoelectric detector. The optical signal is analyzed to obtain the coal seam water content information.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: August 24, 2021
    Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
    Inventors: Shaoyi Xu, Zhencai Zhu, Wei Li, Yanjing Sun, Fangfang Xing, Hongyu Xue, Qiang Peng, Feng Dong, Guang Chen
  • Publication number: 20210247343
    Abstract: When the heading machine tunnels, a current generated by a current excitation source enters a coal seam through a movable cutting pick to form a stray current. The stray current collected by a backflow net returns to a negative electrode of a power supply through a transition resistor. When information such as the water content of the coal seam changes, the stray current and a potential difference across the transition resistor also accordingly change, and the coal seam water content information is converted into an electric signal. When the potential difference across the transition resistor is applied to two ends of a piezoelectric ceramic, the piezoelectric ceramic extends or compresses, and the electric signal is converted into a strain signal. A sensing optical fiber converts the strain signal into an optical signal detectable by a photoelectric detector. The optical signal is analyzed to obtain the coal seam water content information.
    Type: Application
    Filed: March 13, 2020
    Publication date: August 12, 2021
    Inventors: Shaoyi XU, Zhencai ZHU, Wei LI, Yanjing SUN, Fangfang XING, Hongyu XUE, Qiang PENG, Feng DONG, Guang CHEN
  • Patent number: 10966079
    Abstract: Embodiments of the present application disclose a device-to-device (D2D) communication method, a resource assignment method, and apparatuses thereof. The D2D communication method comprises: determining a use state of a first resource, where the first resource is used to perform D2D communication; and sending first information correlated to the use state by using at least one first resource unit (RU) in the first resource, wherein the at least one first RU is an RU at at least one first preset position in the first resource. For the methods and apparatuses in the embodiments of the present application, transmission of a resource at a specific position is used to indicate a use state of a D2D resource, so that at the same time when the basis for achieving relatively high resource use efficiency is provided, particularly the basis for resource adjustment is provided in the absence of cellular network coverage.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: March 30, 2021
    Assignee: BEIJING ZHIGU TECH CO., LTD.
    Inventor: Shaoyi Xu
  • Patent number: 10962605
    Abstract: A method for detecting an insulation damage location in a reflux rail of a subway/coal mine and a transition resistance thereof includes the following steps: connecting a reflux rail to a negative electrode of a substation, selecting a location at a connecting point as a reference location, and mounting a potential detection apparatus at the reference location; mounting a travel distance detection apparatus and a traction current detection apparatus on a locomotive, traveling, by the locomotive, to the substation along the reflux rail, where the three detection apparatuses send respectively recorded data to a control unit; and determining, by the control unit, a potential jump from received potential data and a corresponding jump time, and determining a running distance of the locomotive at a jump moment and a total running length of the locomotive, so as to determine a ground insulation damage location.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: March 30, 2021
    Assignees: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, XUZHOU ZHONGMINE TRANSMISSION TRACK TECHNOLOGY CO., LTD
    Inventors: Shaoyi Xu, Fangfang Xing, Wei Li, Yuqiao Wang, Yao Chen, Hongyu Xue
  • Publication number: 20200408850
    Abstract: A method for detecting an insulation damage location in a reflux rail of a subway/coal mine and a transition resistance thereof includes the following steps: connecting a reflux rail to a negative electrode of a substation, selecting a location at a connecting point as a reference location, and mounting a potential detection apparatus at the reference location; mounting a travel distance detection apparatus and a traction current detection apparatus on a locomotive, traveling, by the locomotive, to the substation along the reflux rail, where the three detection apparatuses send respectively recorded data to a control unit; and determining, by the control unit, a potential jump from received potential data and a corresponding jump time, and determining a running distance of the locomotive at a jump moment and a total running length of the locomotive, so as to determine a ground insulation damage location.
    Type: Application
    Filed: April 23, 2019
    Publication date: December 31, 2020
    Applicants: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, XUZHOU ZHONGMINE TRANSMISSION TRACK TECHNOLOGY Co.,Ltd
    Inventors: Shaoyi XU, Fangfang XING, Wei LI, Yuqiao WANG, Yao CHEN, Hongyu XUE
  • Patent number: 10768379
    Abstract: A synchronous monitoring device and a method for radial and axial vibration of a shearer drum. The monitoring device includes a laser, a first optical fiber coupler, an optical isolator, a second optical fiber coupler, a third optical fiber coupler, an optical fiber collimator, a first photodetector, a second photodetector, a first signal processing module, and a second signal processing module which are disposed on a shearer ranging arm, as well as a reflective coating disposed on a shearer drum. By measuring a phase difference between original light and reflected light, axial vibration of the shearer drum is monitored, and by measuring an intensity difference between original light and reflected light, radial vibration of the shearer drum is monitored.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: September 8, 2020
    Assignees: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, XUZHOU ZHONGMINE TRANSMISSION TRACK TECHNOLOGY CO., LTD
    Inventors: Shaoyi Xu, Wei Li, Fangfang Xing, Yuqiao Wang, Xuefeng Yang, Mengbao Fan, Ruilin Wang, Xianghui Wang, En Lu, Jinyong Ju, Lianchao Sheng
  • Publication number: 20200233153
    Abstract: A synchronous monitoring device and a method for radial and axial vibration of a shearer drum. The monitoring device includes a laser, a first optical fiber coupler, an optical isolator, a second optical fiber coupler, a third optical fiber coupler, an optical fiber collimator, a first photodetector, a second photodetector, a first signal processing module, and a second signal processing module which are disposed on a shearer ranging arm, as well as a reflective coating disposed on a shearer drum. By measuring a phase difference between original light and reflected light, axial vibration of the shearer drum is monitored, and by measuring an intensity difference between original light and reflected light, radial vibration of the shearer drum is monitored.
    Type: Application
    Filed: June 25, 2018
    Publication date: July 23, 2020
    Applicants: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, XUZHOU ZHONGMINE TRANSMISSION TRACK TECHNOLOGY CO., LTD.
    Inventors: Shaoyi XU, Wei LI, Fangfang XING, Yuqiao WANG, Xuefeng YANG, Mengbao FAN, Ruilin WANG, Xianghui WANG, En LU, Jinyong JU, Lianchao SHENG
  • Publication number: 20170156137
    Abstract: Embodiments of the present application disclose a device-to-device (D2D) communication method, a resource assignment method, and apparatuses thereof. The D2D communication method comprises: determining a use state of a first resource, where the first resource is used to perform D2D communication; and sending first information correlated to the use state by using at least one first resource unit (RU) in the first resource, wherein the at least one first RU is an RU at at least one first preset position in the first resource. For the methods and apparatuses in the embodiments of the present application, transmission of a resource at a specific position is used to indicate a use state of a D2D resource, so that at the same time when the basis for achieving relatively high resource use efficiency is provided, particularly the basis for resource adjustment is provided in the absence of cellular network coverage.
    Type: Application
    Filed: October 28, 2016
    Publication date: June 1, 2017
    Inventor: Shaoyi Xu
  • Patent number: 9521677
    Abstract: Provided are methods and corresponding apparatuses for allocation of resource blocks. A method for allocation of resource blocks comprises receiving, from a base station, information regarding a measurement location at which at least one identified resource block has been measured; and using, based upon a current location of a mobile relay node and the measurement location, the at least one identified resource block for communication between the mobile relay node and at least one user equipment connected therewith, wherein the at least one identified resource block is not used for communication between the base station and at least one user equipment connected therewith at the measurement location and a measurement of the at least one identified resource block is below a predetermined threshold. With the claimed inventions, interference in the high speed railway communication could be ameliorated and the spectrum efficiency would be improved.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: December 13, 2016
    Assignee: NEC (China) Co., Ltd.
    Inventors: Su Yi, Ming Lei, Shaoyi Xu
  • Publication number: 20140378154
    Abstract: Provided are methods and corresponding apparatuses for allocation of resource blocks. A method for allocation of resource blocks comprises receiving, from a base station, information regarding a measurement location at which at least one identified resource block has been measured; and using, based upon a current location of a mobile relay node and the measurement location, the at least one identified resource block for communication between the mobile relay node and at least one user equipment connected therewith, wherein the at least one identified resource block is not used for communication between the base station and at least one user equipment connected therewith at the measurement location and a measurement of the at least one identified resource block is below a predetermined threshold. With the claimed inventions, interference in the high speed railway communication could be ameliorated and the spectrum efficiency would be improved.
    Type: Application
    Filed: March 29, 2012
    Publication date: December 25, 2014
    Applicant: NEC (CHINA) CO., LTD.
    Inventors: Su Yi, Ming Lei, Shaoyi Xu
  • Patent number: 8824326
    Abstract: Various methods for managing device-to-device interference are provided. One example method includes receiving an expected interference level for a resource block, where the expected interference level is represented by data indicative of interference associated with the resource block due to device-to-device communications using the resource block. The example method further includes selecting the resource block for a device-to-device communications session based at least in part on the expected interference level for the resource block. Similar and related example methods and example apparatuses are also provided.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: September 2, 2014
    Assignee: Nokia Corporation
    Inventors: Haiming Wang, Shaoyi Xu, Tao Peng, Qianxi Lu
  • Publication number: 20120250636
    Abstract: Methods and apparatus, including computer program products, are provided for allocating resources among user elements. In one aspect there is provided a method. The method may include receiving, at a base station, information from a user element. The information may include at least one bit representing whether direct transmissions between pairs of user elements cause interference to the user element. The base station may schedule, based on the received information, the user element into at least one of a first subframe, when the received information indicates a risk of interference from the direct transmissions between the pairs of user elements, and into a second subframe, when the received information indicates no risk of interference from the direct transmissions between the pairs of user elements. Related apparatus, systems, methods, and articles are also described.
    Type: Application
    Filed: April 6, 2010
    Publication date: October 4, 2012
    Applicant: NOKIA CORPORATION
    Inventors: Haiming Wang, Shaoyi Xu, Tao Peng