Patents by Inventor Xuewu Wang
Xuewu Wang 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).
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Publication number: 20240032738Abstract: An intelligent toothpaste dispensing system includes an intelligent toothbrush, a sampling sensor, and an intelligent toothpaste mixing dispenser. The intelligent toothbrush and the sampling sensor realize data interaction transmission with the intelligent toothpaste mixing dispenser through a wireless communication module. A dispenser circuit board component is arranged on the intelligent toothpaste mixing dispenser. The dispenser circuit board component includes a formula database and a data comparison module. After the data comparison module receives sampling data from the sampling sensor, the data comparison module compares the sampling data with the formula database and extracts a mixing formula. According to a mixing formula instruction, the data comparison module drives the intelligent toothpaste mixing dispenser to mix and dispense toothpaste ingredients and extrude toothpaste consistent with the mixing formula.Type: ApplicationFiled: April 18, 2023Publication date: February 1, 2024Inventor: XUEWU WANG
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Publication number: 20230296795Abstract: Disclosed are a detection collimation unit, a detection apparatus and a SPECT imaging system. The detection collimation unit includes: a scintillation crystal array configured to receive a gamma photon emitted by a radioactive source in a detected object; and a number of photoelectric devices configured to receive the gamma photon and converting the gamma photon into a digital signal. The scintillation crystal array includes a number of scintillation crystals. The number of scintillation crystals are arranged substantially in parallel and are spaced from each other. Each scintillation crystal has a side face configured to receive a ray emitted by the radioactive source and an end face. The number of photoelectric devices are coupled to the end faces of the number of scintillation crystals.Type: ApplicationFiled: August 12, 2021Publication date: September 21, 2023Inventors: Tianyu Ma, Yaqiang Liu, Xuewu Wang, Zhong Wang
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Patent number: 11644584Abstract: The present disclosure provides a gamma ray imaging device and an imaging method, where the imaging device includes a plurality of separate detectors. The plurality of separate detectors are provided at an appropriate spatial position, in an appropriate arrangement manner and are of an appropriate detector material, such that when rays emitted from different positions in an imaging area reach at least one of the plurality of separate detectors, at least one of the thicknesses of the detectors, the materials of the detectors, and the numbers of the detectors though which the rays pass are different, thereby achieving the effect of determining the directions of rays.Type: GrantFiled: November 28, 2019Date of Patent: May 9, 2023Assignee: Tsinghua UniversityInventors: Tianyu Ma, Yaqiang Liu, Xuewu Wang, Zhong Wang
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Patent number: 11619599Abstract: The present disclosure provides a substance identification device and a substance identification method. The substance identification device comprises: a classifier establishing unit configured to establish a classifier based on scattering density values reconstructed for a plurality of known sample materials, wherein the classifier comprises a plurality of feature regions corresponding to a plurality of characteristic parameters for the plurality of known sample materials, respectively; and an identification unit for a material to be tested, configured to match the characteristic parameter of the material to be tested with the classifier, and to identify a type of the material to be tested by obtaining a feature region corresponding to the characteristic parameter of the material to be tested.Type: GrantFiled: July 22, 2020Date of Patent: April 4, 2023Assignees: Tsinghua University, Nuctech Company LimitedInventors: Zhi Zeng, Xingyu Pan, Xuewu Wang, Junli Li, Ming Zeng, Jianmin Li, Ziran Zhao, Jianping Cheng, Hao Ma, Hui Zhang, Hao Yu, Bicheng Liu
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Patent number: 11474051Abstract: The present disclosure provides a dual mode detection method, controller and system, which relates to the technical field of radiation detection. The dual mode detection method of the present disclosure includes: determining a ratio of neutron to X-ray differential cross sections of an inspected object, according to X-ray object detection data, X-ray object-free detection data, neutron object detection data, and neutron object-free detection data; determining a substance type of the inspected object according to a correspondence between the ratio of neutron to X-ray differential cross sections of the inspected object and the substance type.Type: GrantFiled: May 29, 2019Date of Patent: October 18, 2022Inventors: Yigang Yang, Xuewu Wang, Zhi Zhang, Yuanjing Li, Jianmin Li
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Publication number: 20220066056Abstract: The present disclosure provides a gamma ray imaging device and an imaging method, where the imaging device includes a plurality of separate detectors. The plurality of separate detectors are provided at an appropriate spatial position, in an appropriate arrangement manner and are of an appropriate detector material, such that when rays emitted from different positions in an imaging area reach at least one of the plurality of separate detectors, at least one of the thicknesses of the detectors, the materials of the detectors, and the numbers of the detectors though which the rays pass are different, thereby achieving the effect of determining the directions of rays.Type: ApplicationFiled: November 28, 2019Publication date: March 3, 2022Inventors: Tianyu MA, Yaqiang LIU, Xuewu WANG, Zhong WANG
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Publication number: 20210333224Abstract: The present disclosure provides a dual mode detection method, controller and system, which relates to the technical field of radiation detection. The dual mode detection method of the present disclosure includes: determining a ratio of neutron to X-ray differential cross sections of an inspected object, according to X-ray object detection data, X-ray object-free detection data, neutron object detection data, and neutron object-free detection data; determining a substance type of the inspected object according to a correspondence between the ratio of neutron to X-ray differential cross sections of the inspected object and the substance type.Type: ApplicationFiled: May 29, 2019Publication date: October 28, 2021Inventors: Yigang YANG, Xuewu WANG, Zhi ZHANG, Yuanjing LI, Jianmin LI
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Publication number: 20210025836Abstract: The present disclosure provides a substance identification device and a substance identification method. The substance identification device comprises: a classifier establishing unit configured to establish a classifier based on scattering density values reconstructed for a plurality of known sample materials, wherein the classifier comprises a plurality of feature regions corresponding to a plurality of characteristic parameters for the plurality of known sample materials, respectively; and an identification unit for a material to be tested, configured to match the characteristic parameter of the material to be tested with the classifier, and to identify a type of the material to be tested by obtaining a feature region corresponding to the characteristic parameter of the material to be tested.Type: ApplicationFiled: July 22, 2020Publication date: January 28, 2021Inventors: Zhi ZENG, Xingyu PAN, Xuewu WANG, Junli LI, Ming ZENG, Jianmin LI, Ziran ZHAO, Jianping CHENG, Hao MA, Hui ZHANG, Hao YU, Bicheng LIU
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Publication number: 20200354855Abstract: A method for processing a wafer includes subjecting the wafer to a reduction treatment with heat and a reducing agent that has a melting point of lower than 600° C. The wafer is made of a material selected from the group consisting of lithium tantalate, lithium niobate, and a combination thereof. The wafer and the reducing agent are spaced apart from each other so that the reducing agent indirectly interacts with the wafer during the reduction treatment. Also disclosed is a processed wafer obtained by the method.Type: ApplicationFiled: July 28, 2020Publication date: November 12, 2020Inventors: Mingxin CHEN, Xuewu WANG
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Patent number: 10620336Abstract: The present disclosure relates to a method, a device and a system for inspecting a moving object based on cosmic rays, pertaining to the field of radiation imaging and safety inspection techniques. The method includes: detecting whether a speed of the inspected moving object is within a preset range; recording a motion trajectory of the moving object with a monitoring device; acquiring information about charged particles in the cosmic rays with a position sensitive detector, the information about charged particles including track information of the charged particles; determining the moving object by matching positions of the motion trajectory and the track information; reconstructing the track of the charged particles according to the information about the charged particles; and recognizing the material inside the moving object based on the track reconstruction.Type: GrantFiled: January 20, 2017Date of Patent: April 14, 2020Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITEDInventors: Kejun Kang, Jianping Cheng, Zhiqiang Chen, Ziran Zhao, Junli Li, Xuewu Wang, Zhi Zeng, Qingjun Zhang, Jianping Gu, Xi Yi, Bicheng Liu, Guangming Xu, Yongqiang Wang
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Patent number: 10613247Abstract: The present application relates to a method, apparatus and system for inspecting an object based on a cosmic ray, pertaining to the technical field of radiometric imaging and safety inspection. The method includes: recording a movement trajectory of an inspected object by using a monitoring device; acquiring information of charged particles in the cosmic ray by using a position-sensitive detector, the information of charged particles comprising trajectory information of the charged particles; performing position coincidence for the movement trajectory and the trajectory information to determine the object; performing trajectory remodeling for the charged particles according to the information of charged particles; and identifying a material inside the moving object according to the trajectory remodeling.Type: GrantFiled: January 20, 2017Date of Patent: April 7, 2020Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITEDInventors: Kejun Kang, Zhiqiang Chen, Yuanjing Li, Ziran Zhao, Junli Li, Xuewu Wang, Yaohong Liu, Zhi Zeng, Jianping Gu, Song Liang, Bicheng Liu, Guangming Xu, Yongqiang Wang
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Patent number: 10422733Abstract: Disclosed herein are methods for testing wettability of tight oil reservoir. The method comprises: by using a nuclear magnetic resonance testing method, testing nuclear magnetic resonance maps of the tight oil reservoir in the saturated water state and in the saturated oil state; by using the nuclear magnetic resonance maps, analyzing a water-wetting degree and an oil-wetting degree of the tight oil reservoir; calculating a mixed wettability index of the tight oil reservoir, and estimating the wettability of the tight oil reservoir according to the mixed wettability index. This disclosure can effectively improve testing efficiency, quantitatively analyze the water-wetting degree and the oil-wetting degree of the tight oil reservoir, and improve accuracy of testing results.Type: GrantFiled: April 18, 2017Date of Patent: September 24, 2019Assignee: PetroChina Company LimitedInventors: Zhengming Yang, Yutian Luo, Xuewu Wang, Xuewei Liu, Shengchun Xiong, Yapu Zhang, Ying He
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Publication number: 20180156741Abstract: Inspection devices and inspection methods are disclosed. The inspection method includes: performing X-ray scanning on an object being inspected so as to generate an image of the object being inspected; dividing the image of the object being inspected to determine at least one region of interest; detecting interaction between a cosmic ray and the region of interest to obtain a detection value; calculating a scattering characteristic value and/or an absorption characteristic value of the cosmic ray in the region of interest based on size information of the region of interest and the detection value; and discriminating a material attribute of the region of interest by means of the scattering characteristic value and/or the absorption characteristic value. With the above technical solutions, inspection accuracy and inspection efficiency may be improved.Type: ApplicationFiled: September 27, 2017Publication date: June 7, 2018Inventors: Kejun Kang, Jianping Cheng, Zhiqiang Chen, Ziran Zhao, Junli Li, Xuewu Wang, Zhi Zeng, Ming Zeng, Yi Wang, Qingjun Zhang, Jianping Gu, Xi Yi, Bicheng Liu, Guangming Xu, Yongqiang Wang
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Publication number: 20180088016Abstract: Disclosed herein are methods for testing wettability of dense oil reservoir. The method comprises: by using a nuclear magnetic resonance testing method, testing nuclear magnetic resonance maps of the dense oil reservoir in the saturated water state and in the saturated oil state; by using the nuclear magnetic resonance maps, analyzing a water-wetting degree and an oil-wetting degree of the dense oil reservoir; calculating a mixed wettability index of the dense oil reservoir, and estimating the wettability of the dense oil reservoir according to the mixed wettability index. This disclosure can effectively improve testing efficiency, quantitatively analyze the water-wetting degree and the oil-wetting degree of the dense oil reservoir, and improve accuracy of testing results.Type: ApplicationFiled: April 18, 2017Publication date: March 29, 2018Inventors: Zhengming Yang, Yutian Luo, Xuewu Wang, Xuewei Liu, Shengchun Xiong, Yapu Zhang, Ying He
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Publication number: 20180084632Abstract: A neutron generation apparatus, a neutron imaging device and an imaging method are disclosed. The neutron imaging device includes a neutron generation apparatus for generating a continuous energy spectrum neutron beam; a neutron detector for receiving a neutron beam which penetrates an object being inspected to obtain an electrical signal; a data collection circuit coupled to the neutron detector, for converting the electrical signal into a digital signal; and a data processing apparatus coupled to the data acquisition circuit, for obtaining images of the object being inspected under neutrons of different energy spectrums based on the digital signal. The above technical solutions may be utilized to generate the continuous energy spectrum neutron beam so that the images of the object being inspected under the neutrons of different energy spectrums may be obtained by the time-of-flight method, improving sensitivity of the detection.Type: ApplicationFiled: September 18, 2017Publication date: March 22, 2018Inventors: Yigang Yang, Yuanjing Li, Xuewu Wang, Zhi Zhang
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Patent number: 9915751Abstract: The present application discloses a detector module, which is arranged on a detector arm, comprising one or a plurality of detector units arranged in a scattered configuration, wherein each of the detector units in the detector module is installed aiming at a beam center of a ray source, thus improving imaging quality and reducing the size of a detector frame drastically.Type: GrantFiled: July 22, 2014Date of Patent: March 13, 2018Assignees: NUCTECH COMPANY LIMITED, TSINGHUA UNIVERSITYInventors: Kejun Kang, Jianmin Li, Yuanjing Li, Yulan Li, Jingyu Gu, Weizhen Wang, Quanwei Song, Qingjun Zhang, Shenjin Ming, Xuewu Wang, Hui Gong, Tao Xue
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Patent number: 9823382Abstract: A vehicle mounted mobile container or vehicle inspection system, including: a radiation source, a movable vehicle for carrying the inspection system, and a detector arm rack which has a horizontal arm and a vertical arm, a first end of the horizontal arm is connected to the vehicle and a second end thereof is connected to an end of the vertical arm. The horizontal arm and the vertical arm are connected by a pivotal connecting device such that the vertical arm may pivot in a vertical plane, and the horizontal arm and the vertical arm may be retracted in a same horizontal plane. The novel arm rack construction may reduce the space occupied by it on top of the scanning vehicle after the arm rack is stowed so as to reduce the eight of the scanning vehicle under running condition.Type: GrantFiled: December 10, 2015Date of Patent: November 21, 2017Assignee: NUCTECH COMPANY LIMITEDInventors: Jianmin Li, Yulan Li, Jingyu Gu, Yuanjing Li, Quanwei Song, Weizhen Wang, Dongyu Wang, Zhiqiang Chen, Chaunxiang Tang, Yinong Liu, Junli Li, Tao Xue, Hui Gong, Xuewu Wang
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Publication number: 20170329039Abstract: The present disclosure relates to a method, a device and a system for inspecting a moving object based on cosmic rays, pertaining to the field of radiation imaging and safety inspection techniques. The method includes: detecting whether a speed of the inspected moving object is within a preset range; recording a motion trajectory of the moving object with a monitoring device; acquiring information about charged particles in the cosmic rays with a position sensitive detector, the information about charged particles including track information of the charged particles; determining the moving object by matching positions of the motion trajectory and the track information; reconstructing the track of the charged particles according to the information about the charged particles; and recognizing the material inside the moving object based on the track reconstruction.Type: ApplicationFiled: January 20, 2017Publication date: November 16, 2017Inventors: Kejun KANG, Jianping CHENG, Zhiqiang CHEN, Ziran ZHAO, Junli LI, Xuewu WANG, Zhi ZENG, Qingjun ZHANG, Jianping GU, Xi YI, Bicheng LIU, Guangming XU, Yongqiang WANG
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Publication number: 20170329038Abstract: The present application relates to a method, apparatus and system for inspecting an object based on a cosmic ray, pertaining to the technical field of radiometric imaging and safety inspection. The method includes: recording a movement trajectory of an inspected object by using a monitoring device; acquiring information of charged particles in the cosmic ray by using a position-sensitive detector, the information of charged particles comprising trajectory information of the charged particles; performing position coincidence for the movement trajectory and the trajectory information to determine the object; performing trajectory remodeling for the charged particles according to the information of charged particles; and identifying a material inside the moving object according to the trajectory remodeling.Type: ApplicationFiled: January 20, 2017Publication date: November 16, 2017Inventors: Kejun KANG, Zhiqiang CHEN, Yuanjing LI, Ziran ZHAO, Junli LI, Xuewu WANG, Yaohong LIU, Zhi ZENG, Jianping GU, Song LIANG, Bicheng LIU, Guangming XU, Yongqiang WANG
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Patent number: 9714906Abstract: Embodiments of the present invention disclose a nuclide identification method, a nuclide identification system, and a photoneutron emitter. The photoneutron emitter comprises: a pulsed electron accelerator configured for emitting electrons; and a photoneutron converting target configured to receive the electrons emitted by the pulsed electron accelerator and convert the electrons into photoneutrons. The photoneutron converting target has a volume of about 100 to about 8000 cm3, of about 100 to about 2500 cm3, or of about 785 cm3. These embodiments of the present invention can improve an accuracy of identification of a nuclide, and provide a practical photoneutron emitter, method and system for identifying a nuclide. Especially, these embodiments of the present invention can improve an accuracy of identification of a fissile nuclide such as 233U, 235U, and 239Pu, and provide a practical photoneutron emitter, method and system for identifying a fissile nuclide such as 233U, 235U, and 239Pu.Type: GrantFiled: December 19, 2014Date of Patent: July 25, 2017Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITEDInventors: Zhiqiang Chen, Yigang Yang, Xuewu Wang, Qinjian Zhang, Huaibi Chen, Yuanjing Li