Patents by Inventor Zhanfeng Qin
Zhanfeng Qin 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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Patent number: 11830698Abstract: A power supply circuit and a field emission electron source are provided. The power supply circuit includes: field effect transistors Si coupled in series via drains and sources in sequence, 1?i?n, i and n are natural numbers, n?2, and a source of S1 is coupled to a negative electrode of a voltage source, and a drain of Sn is used as an output terminal of the power supply circuit to couple to a load; a first group of diodes D1i coupled in series; a first group of resistors R1j, 2?j?n, and i and j are natural numbers; and a voltage control module configured to adjust an output voltage of the voltage source to cause a current passing through the load to be constant; the field effect transistors Si, 1?i?n, operate in a resistive region.Type: GrantFiled: April 17, 2020Date of Patent: November 28, 2023Assignee: NuRay Technology Co., Ltd.Inventors: Huaping Tang, Xiangyu Yin, Zhanfeng Qin, Jinsong Pan, Qinghui Zhang, Yangwei Zhan
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Patent number: 11792908Abstract: A time-division multiplexing control device applied to a distributed X-ray source includes: a first switch module with a number of first switches that receive a high-voltage signal and a first control signal, selectively turning on one of the plurality of first switches according to the first control signal and sending the high-voltage signal through the first switch turned on; and a cathode control module including a plurality of cathode control stages in one-to-one correspondence with the plurality of first switches, used for receiving the high-voltage signal from the first switch module and sending working state data through a cathode control stage corresponding to the first switch turned on in the plurality of cathode control stages, where each cathode control stage includes a cathode control unit and a cathode.Type: GrantFiled: April 13, 2020Date of Patent: October 17, 2023Assignee: NuRay Technology Co., Ltd.Inventors: Huaping Tang, Jinsong Pan, Yangwei Zhan, Zhanfeng Qin, Qinghui Zhang, Xiangyu Yin
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Publication number: 20230036712Abstract: A power supply circuit and a field emission electron source are provided. The power supply circuit includes: field effect transistors Si coupled in series via drains and sources in sequence, wherein 1?i?n, n?2, and wherein a source of S1 is coupled to a negative electrode of a voltage source, and a drain of Sn is used as an output terminal of the power supply circuit to couple to a load; a first group of diodes D1i coupled in series; a first group of resistors R1j, 2?j?n; and a current feedback module configured to adjust an internal resistance of the field effect transistors Si, coupled in series in sequence, so as to cause a current passing through the load to be constant; wherein the field effect transistors Si, 1?i?n, operate in a constant current region.Type: ApplicationFiled: April 17, 2020Publication date: February 2, 2023Applicant: NuRay Technology Co., Ltd.Inventors: Huaping TANG, Jinsong PAN, Zhanfeng QIN, Xiangyu YIN, Yangwei ZHAN
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Publication number: 20220384135Abstract: A time-division multiplexing control device applied to a distributed X-ray source includes: a first switch module with a number of first switches that receive a high-voltage signal and a first control signal, selectively turning on one of the plurality of first switches according to the first control signal and sending the high-voltage signal through the first switch turned on; and a cathode control module including a plurality of cathode control stages in one-to-one correspondence with the plurality of first switches, used for receiving the high-voltage signal from the first switch module and sending working state data through a cathode control stage corresponding to the first switch turned on in the plurality of cathode control stages, where each cathode control stage includes a cathode control unit and a cathode.Type: ApplicationFiled: April 13, 2020Publication date: December 1, 2022Inventors: Huaping TANG, Jinsong PAN, Yangwei ZHAN, Zhanfeng QIN, Qinghui ZHANG, Xiangyu YIN
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Publication number: 20220375710Abstract: A power supply circuit and a field emission electron source are provided. The power supply circuit includes: field effect transistors Si coupled in series via drains and sources in sequence, 1?i?n, i and n are natural numbers, n?2, and a source of S1 is coupled to a negative electrode of a voltage source, and a drain of Sn is used as an output terminal of the power supply circuit to couple to a load; a first group of diodes D1i coupled in series; a first group of resistors R1j, 2?j?n, and i and j are natural numbers; and a voltage control module configured to adjust an output voltage of the voltage source to cause a current passing through the load to be constant; the field effect transistors Si, 1?i?n, operate in a resistive region.Type: ApplicationFiled: April 17, 2020Publication date: November 24, 2022Applicant: NuRay Technology Co., Ltd.Inventors: Huaping TANG, Xiangyu YIN, Zhanfeng QIN, Jinsong PAN, Qinghui ZHANG, Yangwei ZHAN
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Patent number: 11026319Abstract: Embodiments of the present disclosure disclose a multi-output high-voltage power supply including a channel selection circuit (103) including a plurality of switches; and a high-voltage power supply module (101) connected to the channel selection circuit (103), wherein the high-voltage power supply module (101) includes a fine adjusting power supply component (110) and a plurality of coarse adjusting power supply components (120-1 to 120-N) connected in series, wherein one high-voltage output terminal of the high-voltage power supply module (101) is connected to a common terminal of the channel selection circuit (103), and the other high-voltage output terminal of the high-voltage power supply module (101) is grounded through a current sampling resistor.Type: GrantFiled: December 26, 2019Date of Patent: June 1, 2021Assignees: Tsinghua University, NUCTECH COMPANY LIMITED, NuRay Technology Co., LtdInventors: Yuanjing Li, Yaohong Liu, Huaping Tang, Jinsheng Liu, Xiying Liu, Zhanfeng Qin, Wei Jia, Jinsong Pan
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Patent number: 10969346Abstract: An X-ray product quality automatic inspection device of the present invention comprises: a distributed X-ray source having a plurality of targets and being able to generate X-rays for irradiating an inspected product from the plurality of targets in a predetermined sequence; a detector for receiving the X-rays generated by the distributed X-ray source and outputting a signal representing characteristics of the received X-rays; a transport device for carrying the inspected product to pass through an X-ray radiation region; and a power supply and control device, which is used to supply power to and control the X-ray product quality automatic inspection device, to form characteristic information of the inspected product according to the signal from the detector and to provides an inspection and analysis result of the inspected product according to the characteristic information.Type: GrantFiled: August 27, 2015Date of Patent: April 6, 2021Assignee: NUCTECH COMPANY LIMITEDInventors: Huaping Tang, Zhiqiang Chen, Yuanjing Li, Zhuoyan Liu, Yonggang Wang, Zhanfeng Qin
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Publication number: 20200253033Abstract: Embodiments of the present disclosure disclose a multi-output high-voltage power supply including a channel selection circuit (103) including a plurality of switches; and a high-voltage power supply module (101) connected to the channel selection circuit (103), wherein the high-voltage power supply module (101) includes a fine adjusting power supply component (110) and a plurality of coarse adjusting power supply components (120-1 to 120-N) connected in series, wherein one high-voltage output terminal of the high-voltage power supply module (101) is connected to a common terminal of the channel selection circuit (103), and the other high-voltage output terminal of the high-voltage power supply module (101) is grounded through a current sampling resistor.Type: ApplicationFiled: December 26, 2019Publication date: August 6, 2020Applicants: Tsinghua University, NUCTECH COMPANY LIMITED, NuRay Technology Co., LtdInventors: Yuanjing LI, Yaohong LIU, Huaping TANG, Jinsheng LIU, Xiying LIU, Zhanfeng QIN, Wei JIA, Jinsong PAN
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Patent number: 10648929Abstract: Embodiments of the present invention provide a trailed multiple-viewing-angle item inspection system and method of operating the same. The inspection system includes: a trailer vehicle, a radiation inspection device, a power supply device and a power grid connection device. The trailer vehicle is mounted with a power supply chamber within which a power supply device and a power grid connection device are mounted and an inspection chamber within which a radiation inspection device is mounted. The radiation inspection device includes: ray radiation source configured to emit X-rays from various positions, detectors, a body frame, a transfer device, a data and image process system and a display and operation device.Type: GrantFiled: December 14, 2015Date of Patent: May 12, 2020Assignee: NUCTECH COMPANY LIMITEDInventors: Huaping Tang, Zhiqiang Chen, Yuanjing Li, Xin Jin, Zhuoyan Liu, Yonggang Wang, Hua Peng, Zhanfeng Qin
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Patent number: 10274636Abstract: The present invention may perform fluoroscopic imaging simultaneously on the subjects in at least two channels using only one electron accelerator, at least two sets of X-ray beams and at least two sets of detector systems, through the design of the electron accelerator, the shielding and collimating device, the at least two detector arrays and various mechanical composite structures. The X-ray fluoroscopic imaging system according to the present invention may be designed in specific forms of a stationary type, an assembled type, a track mobile type or vehicular mobile type, etc., and has advantages such as simple structure, low cost, strong function, good image quality and the like.Type: GrantFiled: December 23, 2014Date of Patent: April 30, 2019Assignees: NUCTECH COMPANY LIMITED, TSINGHUA UNIVERSITYInventors: Huaping Tang, Zhiqiang Chen, Chuanxiang Tang, Huaibi Chen, Yuanjing Li, Ziran Zhao, Yaohong Liu, Shangmin Sun, Xinshui Yan, Zhanfeng Qin
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Patent number: 10129971Abstract: The present invention provides a standing wave electron linear accelerator comprising a modulator and a magnetron for producing radio frequency microwaves; a plurality of accelerating tubes for accelerating electrons; a microwave transmission system for feeding the microwaves into the plurality of accelerating tubes; a plurality of electron guns for emitting electron beams into the plurality of accelerating tubes; a plurality of targets impinged by the electrons from a plurality of accelerating tubes to form continuous spectrums of X-rays; a plurality of shielding devices for shielding the continuous spectrums of X-rays generated by the targets; and a microwave distributor disposed adjacent to the end of the microwave transmission system, wherein the microwave distributor has a microwave inlet and a plurality of microwave outlets for distributing the microwaves in the microwave transmission system into the accelerating tubes.Type: GrantFiled: November 19, 2013Date of Patent: November 13, 2018Assignee: Nuctech Company LimitedInventors: Shangmin Sun, Zhanfeng Qin, Sheng Yao, Weifeng Yu, Liwei Song, Chunguang Zong, Jinning Liang
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Patent number: 10078056Abstract: An X-ray product quality online inspection device of the present invention comprises: a distributed X-ray source having a plurality of targets and being able to generate X-rays for irradiating an inspected product from the plurality of targets in a predetermined sequence; a detector for receiving the X-rays generated by the distributed X-ray source and outputting a signal representing characteristics of the received X-rays; a transport device which is located between the distributed X-ray source and the detector for carrying the inspected product to pass through an X-ray radiation region, wherein the transport device is arranged as a continuous transport mechanism which matches a production line of the inspected product; and a power supply and control device, which is used to supply power to and control the X-ray product quality online inspection device.Type: GrantFiled: August 27, 2015Date of Patent: September 18, 2018Assignee: NUCTECH COMPANY LIMITEDInventors: Huaping Tang, Zhiqiang Chen, Yuanjing Li, Zhuoyan Liu, Yonggang Wang, Zhanfeng Qin
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Patent number: 10014148Abstract: The present disclosure is directed to an electron source and an X-ray source using the same. The electron source of the present invention comprises: at least two electron emission zones, each of which comprises a plurality of micro electron emission units, wherein the micro electron emission unit comprises: a base layer, an insulating layer on the base layer, a grid layer on the insulating layer, an opening in the grid layer, and an electron emitter that is fixed at the base layer and corresponds to a position of the opening, wherein the micro electron emission units in the same electron emission zone are electrically connected and simultaneously emit electrons or do not emit electrons at the same time, and wherein different electron emission zones are electrically partitioned.Type: GrantFiled: August 19, 2015Date of Patent: July 3, 2018Assignee: Nuctech Company LimitedInventors: Huaping Tang, Zhiqiang Chen, Yuanjing Li, Yonggang Wang, Zhanfeng Qin
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Patent number: 9857317Abstract: The X-ray fluoroscopic imaging system of the present invention comprises: an inspection passage; an electron accelerator; a shielding collimator apparatus comprising a shielding structure, and a first collimator for extracting a low energy planar sector X-ray beam and a second collimator for extracting a high energy planar sector X-ray beam which are disposed within the shielding structure; a low energy detector array for receiving the X-ray beam from the first collimator; and a high energy detector array for receiving the X-ray beam from the second collimator. The first collimator, the low energy detector array and the target point bombarded by the electron beam are located in a first plane; and the second collimator, the high energy detector array and the target point bombarded by the electron beam are located in a second plane.Type: GrantFiled: December 23, 2014Date of Patent: January 2, 2018Assignees: NUCTECH COMPANY LIMITED, TSINGHUA UNIVERSITYInventors: Huaping Tang, Zhiqiang Chen, Chuanxiang Tang, Huaibi Chen, Yuanjing Li, Ziran Zhao, Yaohong Liu, Shangmin Sun, Xinshui Yan, Zhanfeng Qin
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Publication number: 20170276619Abstract: Embodiments of the present invention provide a trailed multiple-viewing-angle item inspection system and method of operating the same. The inspection system includes: a trailer vehicle, a radiation inspection device, a power supply device and a power grid connection device. The trailer vehicle is mounted with a power supply chamber within which a power supply device and a power grid connection device are mounted and an inspection chamber within which a radiation inspection device is mounted. The radiation inspection device includes: ray radiation source configured to emit X-rays from various positions, detectors, a body frame, a transfer device, a data and image process system and a display and operation device.Type: ApplicationFiled: December 14, 2015Publication date: September 28, 2017Inventors: Huaping TANG, Zhiqiang CHEN, Yuanjing LI, Xin JIN, Zhuoyan LIU, Yonggang WANG, Hua PENG, Zhanfeng QIN
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Publication number: 20170162359Abstract: The present disclosure is directed to an electron source and an X-ray source using the same. The electron source of the present invention comprises: at least two electron emission zones, each of which comprises a plurality of micro electron emission units, wherein the micro electron emission unit comprises: a base layer, an insulating layer on the base layer, a grid layer on the insulating layer, an opening in the grid layer, and an electron emitter that is fixed at the base layer and corresponds to a position of the opening, wherein the micro electron emission units in the same electron emission zone are electrically connected and simultaneously emit electrons or do not emit electrons at the same time, and wherein different electron emission zones are electrically partitioned.Type: ApplicationFiled: August 19, 2015Publication date: June 8, 2017Inventors: Huaping Tang, Zhiqiang Chen, Yuanjing Li, Yonggang Wang, Zhanfeng Qin
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Publication number: 20160223473Abstract: An X-ray product quality online inspection device of the present invention comprises: a distributed X-ray source having a plurality of targets and being able to generate X-rays for irradiating an inspected product from the plurality of targets in a predetermined sequence; a detector for receiving the X-rays generated by the distributed X-ray source and outputting a signal representing characteristics of the received X-rays; a transport device which is located between the distributed X-ray source and the detector for carrying the inspected product to pass through an X-ray radiation region, wherein the transport device is arranged as a continuous transport mechanism which matches a production line of the inspected product; and a power supply and control device, which is used to supply power to and control the X-ray product quality online inspection device.Type: ApplicationFiled: August 27, 2015Publication date: August 4, 2016Inventors: Huaping TANG, Zhiqiang CHEN, Yuanjing LI, Zhuoyan LIU, Yonggang WANG, Zhanfeng QIN
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Publication number: 20160223474Abstract: An X-ray product quality automatic inspection device of the present invention comprises: a distributed X-ray source having a plurality of targets and being able to generate X-rays for irradiating an inspected product from the plurality of targets in a predetermined sequence; a detector for receiving the X-rays generated by the distributed X-ray source and outputting a signal representing characteristics of the received X-rays; a transport device for carrying the inspected product to pass through an X-ray radiation region; and a power supply and control device, which is used to supply power to and control the X-ray product quality automatic inspection device, to form characteristic information of the inspected product according to the signal from the detector and to provides an inspection and analysis result of the inspected product according to the characteristic information.Type: ApplicationFiled: August 27, 2015Publication date: August 4, 2016Inventors: Huaping TANG, Zhiqiang CHEN, Yuanjing LI, Zhuoyan LIU, Yonggang WANG, Zhanfeng QIN
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Patent number: 9341736Abstract: This invention relates to an X-ray goods inspection apparatus, and in particular to a goods inspection apparatus using distributed X-ray source.Type: GrantFiled: December 19, 2013Date of Patent: May 17, 2016Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITEDInventors: Huaping Tang, Yuanjing Li, Ziran Zhao, Yaohong Liu, Zhanfeng Qin, Jinyu Zhang, Hu Tang
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Publication number: 20160135278Abstract: The present invention provides a standing wave electron linear accelerator comprising a modulator and a magnetron for producing radio frequency microwaves; a plurality of accelerating tubes for accelerating electrons; a microwave transmission system for feeding the microwaves into the plurality of accelerating tubes; a plurality of electron guns for emitting electron beams into the plurality of accelerating tubes; a plurality of targets impinged by the electrons from a plurality of accelerating tubes to form continuous spectrums of X-rays; a plurality of shielding devices for shielding the continuous spectrums of X-rays generated by the targets; and a microwave distributor disposed adjacent to the end of the microwave transmission system, wherein the microwave distributor has a microwave inlet and a plurality of microwave outlets for distributing the microwaves in the microwave transmission system into the accelerating tubes.Type: ApplicationFiled: November 19, 2013Publication date: May 12, 2016Inventors: Shangmin SUN, Zhanfeng QIN, Sheng YAO, Weifeng YU, Liwei SONG, Chunguang ZONG, Jinning LIANG