Patents by Inventor Jinsheng Liu
Jinsheng Liu 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: 20170365440Abstract: An apparatus and method to generate distributed x-rays. A hot cathode of an electron gun is used in vacuum to generate electron beams having certain initial movement energy and speed. Periodic scanning is performed with the initial low-energy electron beams, which are thus caused to be reciprocally deflected. A current-limiting device is provided in the travel path of the electron beams along the direction of the reciprocal deflection. Through holes arranged in an array on the current-limiting device, only part of the electron beams targeting specific positions can pass to form sequential electron beam currents distributed in an array. These electron beam currents are accelerated by a high-voltage electric field to obtain high energy, bombard an anode target, and thus sequentially generate corresponding focus spots and x-rays distributed in an array at the anode target.Type: ApplicationFiled: September 6, 2017Publication date: December 21, 2017Inventors: Yuanjing LI, Yaohong LIU, Jinsheng LIU, Huaping TANG, Chuanxiang TANG, Huaibi CHEN, Xinshui YAN
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Patent number: 9843313Abstract: The present invention provides a high voltage pulse modulating power source based on alternate group triggering, which comprises: a DC stabilized voltage source for supplying power to the high voltage pulse modulating power source; a plurality of solid-state switches; a plurality of triggers corresponding to said plurality of solid-state switches, wherein each trigger provides a trigger signal to its corresponding solid-state switch to turn on said corresponding solid-state switch, wherein said plurality of triggers are divided into at least two groups of triggers; a time sequence control module, which, at time t1, controls said plurality of triggers to generate trigger signals so as to turn on said plurality of solid-state switches simultaneously, and at time t2, controls one group of said at least two groups of triggers to generate trigger signals to turn on solid-state switches corresponding to this group of triggers, wherein time t1 and time t2 appear alternately.Type: GrantFiled: December 28, 2012Date of Patent: December 12, 2017Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Yaohong Liu, Chuanxiang Tang, Xinshui Yan, Wei Jia, Jianjun Gao, Jinsheng Liu, Wei Yin, Xiying Liu, Hao Shi
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Patent number: 9786465Abstract: An apparatus and method to generate distributed x-rays. A hot cathode of an electron gun is used in vacuum to generate electron beams having certain initial movement energy and speed. Periodic scanning is performed with the initial low-energy electron beams, which are thus caused to be reciprocally deflected. A current-limiting device is provided in the travel path of the electron beams along the direction of the reciprocal deflection. Through holes arranged in an array on the current-limiting device, only part of the electron beams targeting specific positions can pass to form sequential electron beam currents distributed in an array. These electron beam currents are accelerated by a high-voltage electric field to obtain high energy, bombard an anode target, and thus sequentially generate corresponding focus spots and x-rays distributed in an array at the anode target.Type: GrantFiled: December 20, 2013Date of Patent: October 10, 2017Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITEDInventors: Yuanjing Li, Yaohong Liu, Jinsheng Liu, Huaping Tang, Chuanxiang Tang, Huaibi Chen, Xinshui Yan
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Patent number: 9761404Abstract: A x-ray apparatus of the present application comprises: a vacuum box which is sealed at its periphery, and the interior thereof is high vacuum; a plurality of electron transmitting units arranged in a linear array and installed on the wall at one end within the vacuum box, each electron transmitting unit is independent to each other; the electron transmitting unit having: a heating filament; a cathode connected to the heating filament; a grid arranged above the cathode opposing the cathode; anode made of metal and installed at the other end of the vacuum box, and in the direction of length, the anode is parallel to the plane of the grid of the electron transmitting unit, and in the direction of width, the anode has a predetermined angle with respect to the plane of the grid of the electron transmitting unit.Type: GrantFiled: September 18, 2014Date of Patent: September 12, 2017Assignees: Tsinghua University, Nuctech Company LimitedInventors: Chuanxiang Tang, Huaping Tang, Huaibi Chen, Wenhui Huang, Huayi Zhang, Shuxin Zheng, Yaohong Liu, Jinsheng Liu
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Patent number: 9653247Abstract: A two dimensional array distributed x-ray apparatus of this disclosure includes: a vacuum box which is sealed at its periphery, where the interior thereof is high vacuum; a plurality of electron transmitting units arranged in one plane in a two dimensional array on the wall of the vacuum box; an anode having targets corresponding to the plurality electron transmitting unit arranged in parallel with the plane of the plurality of electron transmitting units in the vacuum box; a power supply and control system having a high voltage power supply connected to the anode, a filament power supply connected to each of the plurality of the electron transmitting units, and a grid-controlled apparatus connected to each of the plurality of electron transmitting units; and a control system for controlling each power supply.Type: GrantFiled: September 18, 2014Date of Patent: May 16, 2017Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Huaping Tang, Chuanxiang Tang, Huaibi Chen, Wenhui Huang, Huayi Zhang, Shuxin Zheng, Jinsheng Liu
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Publication number: 20160191307Abstract: A method for vehicle diagnosing apparatus comprises: providing a diagnosing apparatus terminal which receives the latest data edition information of one or more data packets pushed to the diagnosing apparatus terminal; the diagnosing apparatus terminal comparing the latest data edition information of the data packets with the current data edition information of the data packets respectively so as to determine whether the latest data edition of each data packet is superior to the current data edition of this data packet; if there is any data packet whose latest data edition is superior to the current data edition, the diagnosing apparatus terminal prompting that there is an update for the data edition; the diagnosing apparatus terminal downloading the data packet for which there is an update; and the diagnosing apparatus terminal installing this data packet and replacing the current data edition information with the latest data edition information.Type: ApplicationFiled: December 28, 2015Publication date: June 30, 2016Inventors: Yulun Zhao, Jinsheng Liu, Guobo Wang
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Publication number: 20150078511Abstract: A x-ray apparatus of the present application comprises: a vacuum box which is sealed at its periphery, and the interior thereof is high vacuum; a plurality of electron transmitting units arranged in a linear array and installed on the wall at one end within the vacuum box, each electron transmitting unit is independent to each other; the electron transmitting unit having: a heating filament; a cathode connected to the heating filament; a grid arranged above the cathode opposing the cathode; anode made of metal and installed at the other end of the vacuum box, and in the direction of length, the anode is parallel to the plane of the grid of the electron transmitting unit, and in the direction of width, the anode has a predetermined angle with respect to the plane of the grid of the electron transmitting unit.Type: ApplicationFiled: September 18, 2014Publication date: March 19, 2015Inventors: Chuanxiang TANG, Huaping TANG, Huaibi CHEN, Wenhui HUANG, Huayi ZHANG, Shuxin ZHENG, Yaohong LIU, Jinsheng LIU
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Publication number: 20150078509Abstract: A two dimensional array distributed x-ray apparatus of this disclosure comprises: a vacuum box which is sealed at its periphery, and the interior thereof is high vacuum; a plurality of electron transmitting units arranged in one plane in a two dimensional array on the wall of the vacuum box; an anode having targets corresponding to the plurality electron transmitting unit arranged in parallel with the plane of the plurality of electron transmitting units in the vacuum box; a power supply and control system having a high voltage power supply connected to the anode, a filament power supply connected to each of the plurality of the electron transmitting units, a grid-controlled apparatus connected to each of the plurality of electron transmitting units, a control system for controlling each power supply; wherein the anode comprises: an anode plate made of metal and parallel to the upper surface of the electron transmitting unit; a plurality of targets arranged on the anode plate and disposed corresponding to theType: ApplicationFiled: September 18, 2014Publication date: March 19, 2015Inventors: Huaping TANG, Chuanxiang TANG, Huaibi CHEN, Wenhui HUANG, Huayi ZHANG, Shuxin ZHENG, Jinsheng LIU
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Publication number: 20140320105Abstract: The present invention provides a pulse modulating power source, which comprises: a plurality of discharging modules connected in series during discharging; a plurality of triggers corresponding to said plurality of discharging modules, wherein each trigger provides a trigger signal to the corresponding discharging module to turn it on; a control logic module for controlling the trigger signals so as to turn on said plurality of discharging modules successively with a time delay; an output terminal for outputting a voltage.Type: ApplicationFiled: December 28, 2012Publication date: October 30, 2014Applicant: Nuctech Company LimitedInventors: Yaohong Liu, Chuanxiang Tang, Xinshui Yan, Wei Jia, Jianjun Gao, Jinsheng Liu, Wei Yin, Xiying Liu, Hao Shi
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Publication number: 20140185776Abstract: An apparatus and method to generate distributed x-rays. A hot cathode of an electron gun is used in vacuum to generate electron beams having certain initial movement energy and speed. Periodic scanning is performed with the initial low-energy electron beams, which are thus caused to be reciprocally deflected. A current-limiting device is provided in the travel path of the electron beams along the direction of the reciprocal deflection. Through holes arranged in an array on the current-limiting device, only part of the electron beams targeting specific positions can pass to form sequential electron beam currents distributed in an array. These electron beam currents are accelerated by a high-voltage electric field to obtain high energy, bombard an anode target, and thus sequentially generate corresponding focus spots and x-rays distributed in an array at the anode target.Type: ApplicationFiled: December 20, 2013Publication date: July 3, 2014Applicants: NUCTECH COMPANY LIMITED, TSINGHUA UNIVERSITYInventors: Yuanjing Li, Yaohong Liu, Jinsheng Liu, Huaping Tang, Chuanxiang Tang, Huaibi Chen, Xinshui Yan
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Publication number: 20140077619Abstract: The present invention provides a high voltage pulse modulating power source based on alternate group triggering, which comprises: a DC stabilized voltage source for supplying power to the high voltage pulse modulating power source; a plurality of solid-state switches; a plurality of triggers corresponding to said plurality of solid-state switches, wherein each trigger provides a trigger signal to its corresponding solid-state switch to turn on said corresponding solid-state switch, wherein said plurality of triggers are divided into at least two groups of triggers; a time sequence control module, which, at time t1, controls said plurality of triggers to generate trigger signals so as to turn on said plurality of solid-state switches simultaneously, and at time t2, controls one group of said at least two groups of triggers to generate trigger signals to turn on solid-state switches corresponding to this group of triggers, wherein time t1 and time t2 appear alternately.Type: ApplicationFiled: December 28, 2012Publication date: March 20, 2014Inventors: Yaohong Liu, Chuanxiang Tang, Xinshui Yan, Wei Jia, Jianjun Gao, Jinsheng Liu, Wei Yin, Xiying Liu, Hao Shi
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Patent number: 7884559Abstract: A multi-energy frequency-multiplying particle accelerator and a method thereof are disclosed, an accelerator comprises a pulse power generation unit for generating N pulse signals with different power levels, N is equal to or greater than 2; N microwave power generation units for, under the control of a control signal, generating N microwaves with different energy levels based on said N pulse signals, respectively; a power mixing unit having N entrances and one exit and for inputting a corresponding microwave among said N microwaves from each of said N entrances and outputting said N microwaves from said one exit; a particle beam generation unit for generating N particle beams in synchronization with said N microwaves; and an accelerating unit for using said N microwaves to accelerate said N particle beams, respectively.Type: GrantFiled: October 11, 2007Date of Patent: February 8, 2011Assignees: Tsinghua University, Nuctech Company LimitedInventors: Yaohong Liu, Chuanxiang Tang, Haifeng Hu, Zhiqiang Chen, Yuanjing Li, Huaibi Chen, Huaping Tang, Jinsheng Liu, Jianjun Gao
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Publication number: 20100219776Abstract: A multi-energy frequency-multiplying particle accelerator and a method thereof are disclosed in order to overcome the drawbacks of the existing accelerator, such as single energy level, beam current and operating frequency limited by a single power source. The accelerator comprises a pulse power generation unit for generating N pulse signals with different power levels, N is equal to or greater than 2; N microwave power generation units for, under the control of a control signal, generating N microwaves with different energy levels based on said N pulse signals, respectively; a power mixing unit having N entrances and one exit and for inputting a corresponding microwave among said N microwaves from each of said N entrances and outputting said N microwaves from said one exit; a particle beam generation unit for generating N particle beams in synchronization with said N is microwaves; and an accelerating unit for using said N microwaves to accelerate said N particle beams, respectively.Type: ApplicationFiled: October 11, 2007Publication date: September 2, 2010Inventors: Yaohong Liu, Chuanxiang Tang, Haifeng Hu, Zhiqiang Chen, Yuanjing Li, Huaibi Chen, Huaping Tang, Jinsheng Liu, Jianjun Gao
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Patent number: 7751531Abstract: The present invention discloses a standing wave linear accelerator, comprising: a microwave device configured to generate microwave; an electron beam emitting device configured to emit electron beam; an accelerating device configured to receive the microwave generated by the microwave device and form a microwave electric field, to accelerate electron beams generated from the electron beam emitting device and undertake the accelerated electron beam targeting to emit X ray beam; a synchronous device generating synchronous pulse signal; and a quick beam emitting device receiving the synchronous pulse signal generated by the synchronous device, wherein the microwave device runs and generates microwave in advance before the operation of the electron beam emitting device based on the synchronous pulse signal, and the quick beam emitting device drives the electron beam emitting device to emit electron beam after power of the microwave generated by the microwave device reaches stable state, so that the accelerating dType: GrantFiled: December 25, 2006Date of Patent: July 6, 2010Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Yaohong Liu, Chuanxiang Tang, Yuanjing Li, Jinsheng Liu, Wei Jia, Jianjun Gao, Huaping Tang, Chong Gu, Wei Yin, Dan Zhang, Qinghui Zhang
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Patent number: 7696488Abstract: An irradiating device and a method for controlling it are provided. The device comprises an electron accelerator and a scanning box connected to the electron accelerator, wherein the scanning box is provided with a target, an electron beam exit window positioned at left or right side of the target and a scanning magnet. The device integrates the functions of both the existing irradiating device outputting electron beams and those outputting X-rays. When the scanning magnet is in operation, the irradiating device outputs electron beams; and when the scanning magnet is not in operation, the irradiating device outputs X-rays. Therefore, the device is capable of outputting two radiation sources so as to meet requirements for radiation-processing articles with different sizes.Type: GrantFiled: July 17, 2007Date of Patent: April 13, 2010Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Yaohong Liu, Huaping Tang, Xinshui Yan, Jianjun Gao, Feng Gao, Dongsheng Zhang, Xiaotian Liang, De Wei, Jinsheng Liu, Wei Jia, Wei Yin, Dan Zhang, Chong Gu, Qinghui Zhang
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Patent number: 7679012Abstract: A high-voltage automatic changeover switch, includes a support and a control circuit board mounted on the support. In one embodiment, the support includes an insulating frame, four high-voltage contacts mounted on each of two opposite plates of the insulating frame, four high-voltage contacts on the same plate being pair-to-pair arranged, the high-voltage contacts at the corresponding positions on the two plates being pair-to-pair arranged. A motor is provided on the support, and when switching the high voltages, the control circuit board controls the rotation of the motor to automatically switch the connection relation between the high-voltage contact pairs. Embodiments of the switch have a voltage-resistance of above 50 KV, allowing a pulse current of not less than 500 A to pass through, and good contact performance and a high stability.Type: GrantFiled: July 13, 2007Date of Patent: March 16, 2010Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Yaohong Liu, Yumei Chen, Huaping Tang, Jianjun Gao, Xinshui Yan, Feng Gao, Wei Jia, Xiaotian Liang, Jinsheng Liu, De Wei, Wei Yin, Dan Zhang, Chong Gu, Qinghui Zhang
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Patent number: 7646851Abstract: Disclosed is a device and method for generating X-rays having different energy levels as well as a material discrimination system thereof. The method comprises the steps of: generating a first pulse voltage, a second pulse voltage, a third pulse voltage and a fourth pulse voltage, generating a first electron beam having a first beam load and a second electron beam having a second beam load, respectively, based on the first pulse voltage and second pulse voltage, generating a first microwave having a first power and a second microwave having a second power, respectively, based on the third pulse voltage and the fourth pulse voltage, accelerating the first and second electron beams respectively using the first and second microwave to obtain the accelerated first electron beam and the second electron beam, hitting a target with the accelerated first electron beam and the second electron beam to generate a first X-ray and a second X-ray having different energy levels.Type: GrantFiled: April 23, 2007Date of Patent: January 12, 2010Assignees: Tsinghua University, Nuctech Company LimitedInventors: Yaohong Liu, Chuanxiang Tang, Zhiqiang Chen, Huaibi Chen, Jinsheng Liu, Jianjun Gao
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Publication number: 20100002843Abstract: The present invention discloses a standing wave linear accelerator, comprising: a microwave device configured to generate microwave; an electron beam emitting device configured to emit electron beam; an accelerating device configured to receive the microwave generated by the microwave device and form a microwave electric field, to accelerate electron beams generated from the electron beam emitting device and undertake the accelerated electron beam targeting to emit X ray beam; a synchronous device generating synchronous pulse signal; and a quick beam emitting device receiving the synchronous pulse signal generated by the synchronous device, wherein the microwave device runs and generates microwave in advance before the operation of the electron beam emitting device based on the synchronous pulse signal, and the quick beam emitting device drives the electron beam emitting device to emit electron beam after power of the microwave generated by the microwave device reaches stable state, so that the accelerating dType: ApplicationFiled: December 25, 2006Publication date: January 7, 2010Inventors: Yaohong Liu, Chuanxiang Tang, Yuanjing Li, Jinsheng Liu, Wei Jia, Jianjun Gao, Huaping Tang, Chong Gu, Wei Yin, Dan Zhang, Qinghui Zhang
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Publication number: 20080078922Abstract: A high-voltage automatic changeover switch, includes a support and a control circuit board mounted on the support. In one embodiment, the support includes an insulating frame, four high-voltage contacts mounted on each of two opposite plates of the insulating frame, four high-voltage contacts on the same plate being pair-to-pair arranged, the high-voltage contacts at the corresponding positions on the two plates being pair-to-pair arranged. A motor is provided on the support, and when switching the high voltages, the control circuit board controls the rotation of the motor to automatically switch the connection relation between the high-voltage contact pairs. Embodiments of the switch have a voltage-resistance of above 50 KV, allowing a pulse current of not less than 500 A to pass through, and good contact performance and a high stability.Type: ApplicationFiled: July 13, 2007Publication date: April 3, 2008Applicants: NUCTECH COMPANY LIMITED, TSINGHUA UNIVERSITYInventors: Yaohong LIU, Yumei CHEN, Huaping TANG, Jianjun GAO, Xinshui YAN, Feng GAO, Wei JIA, Xiaotian LIANG, Jinsheng LIU, De WEI, Wei YIN, Dan ZHANG, Chong GU, Qinghui ZHANG
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Publication number: 20080067406Abstract: An irradiating device and a method for controlling it are provided. The device comprises an electron accelerator and a scanning box connected to the electron accelerator, wherein the scanning box is provided with a target, an electron beam exit window positioned at left or right side of the target and a scanning magnet. The device integrates the functions of both the existing irradiating device outputting electron beams and those outputting X-rays. When the scanning magnet is in operation, the irradiating device outputs electron beams; and when the scanning magnet is not in operation, the irradiating device outputs X-rays. Therefore, the device is capable of outputting two radiation sources so as to meet requirements for radiation-processing articles with different sizes.Type: ApplicationFiled: July 17, 2007Publication date: March 20, 2008Inventors: Yaohong Liu, Huaping Tang, Xinshui Yan, Jianjun Gao, Feng Gao, Dongsheng Zhang, Xiaotian Liang, De Wei, Jinsheng Liu, Wei Jia, Wei Yin, Dan Zhang, Chong Gu, Qinghui Zhang