Patents by Inventor Chuanxiang Tang
Chuanxiang Tang 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: 7580505Abstract: The present invention discloses a method for inspecting an object using multi-energy radiations and an apparatus thereof. The method comprises the steps of: causing multi-energy radiations to interact with an object under inspection; detecting and recording detection values after an interaction between the multi-energy radiations and the object under inspection; substituting a portion of the detection values into a predetermined calibration function to obtain information comprising primary material attribute; and determining further material attributes of the object by applying a set of functions suitable for a energy band corresponding to the information. The present invention is applicable to the large container cargo inspection without opening containers at customs, ports and airports.Type: GrantFiled: December 29, 2006Date of Patent: August 25, 2009Assignees: Tsinghua University, Nuctech Company LimitedInventors: Kejun Kang, Haifeng Hu, Zhiqiang Chen, Yuanjing Li, Xuewu Wang, Chuanxiang Tang, Liming Wang, Yinong Liu, Yaohong Liu, Li Zhang, Jianmin Li, Huaqiang Zhong, Jianping Cheng, Huaibi Chen, Hua Peng, Yali Xie, Junli Li, Ning Kang, Qinghua Li
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Publication number: 20090136004Abstract: For a radiation imaging inspection system, apparatus, and/or method, the system, particularly a trailer security inspection system, may include a protective wall forming an inspection passage for passage of a trailer, a radiation imaging system effecting security inspection of the trailer passing through the inspection passage, and a traction arrangement for hauling the trailer.Type: ApplicationFiled: November 20, 2008Publication date: May 28, 2009Inventors: Haifeng HU, Zhiqiang CHEN, Yuanjing LI, Chuanxiang TANG, Hua PENG, Zhizhong LIANG, Zhongrong YANG, Shangmin SUN, Yaohong LIU, Jinyu ZHANG, Qingjun ZHANG, Haitao JIANG, Yanli DENG, Xiang'an QI, Meng WANG, Haihong SUN
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Publication number: 20090087026Abstract: The present invention provides a method and system of material identification using binocular steroscopic and multi-energy transmission image. With the method, any obstacle that dominates the ray absorption can be peeled off from the objects that overlap in the direction of a ray beam. The object that is unobvious due to a relatively small amount of ray absorption will thus stand out, and the material property of the object, such as organic, mixture, metal and the like can be identified. This method lays a fundament for automatic identification of harmful objects, such as explosive, drugs, etc., concealed in a freight container.Type: ApplicationFiled: July 28, 2008Publication date: April 2, 2009Inventors: Yali Xie, Qitian Miao, Hua Peng, Kejun Kang, Haifeng Hu, Zhiqiang Chen, Xueguang Cao, Chuanxiang Tang, Jianping Gu, Xuewu Wang, Hongsheng Wen, Bei He, Yaohong Liu, Shangmin Sun, Quanwei Song, Jin Lin, Xianli Ding
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Patent number: 7497618Abstract: A mobile vehicle inspection system includes a moving device; a driving device for driving the moving device to move during scanning inspection; a radiation source disposed on the moving device for emitting a ray; a rotary table pivotally disposed on the moving device; an upright post installed on the rotary table at a lower end of the upright post; transverse detector beam having an end connected with an upper end of the upright post; the upright detector beam having an upper end connected with the other end of the transverse detector beam, and extending downwards from the other end of the transverse detector beam so that the upright post, the transverse detector beam and the upright detector beam constitute a frame of a substantial inverted “U” shape, a ray emitted from the radiation source so as to inspect a vehicle to be inspected which passes through the inverted-“U”-shaped frame.Type: GrantFiled: October 12, 2007Date of Patent: March 3, 2009Assignees: Tsinghua University, Nuctech Company LimitedInventors: Zhiqiang Chen, Kejun Kang, Haifeng Hu, Yuanjing Li, Hua Peng, Chuanxiang Tang, Shangmin Sun, Yinong Liu, Jianmin Li, Junli Li, Li Zhang, Yaohong Liu, Nan Jiang, Zhongrong Yang, Tao Wang
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Publication number: 20080253517Abstract: A method for conducting irradiation of all logs of a whole vehicle with X-rays as a phytosanitary treatment may include: connecting a traction device and a goods carrying vehicle outside a shielding door; opening the door; the traction device pulling the vehicle into a tunnel; closing the shielding door; upon the vehicle reaching an irradiation region, accelerators generating X-rays; the traction device pulling the vehicle to pass through the irradiation region; stopping the X-rays; opening the door; the traction device pulling the vehicle away from the irradiation treatment tunnel; and disconnecting the traction device from the vehicle. A device may include a shielding structure, a tunnel formed therethrough; a rail along the tunnel; accelerators within the tunnel; and a traction device for pulling a vehicle carrying goods for quarantine treatment, the accelerators symmetrically arranged at both sides of and on the top of an irradiation region in the tunnel.Type: ApplicationFiled: April 11, 2008Publication date: October 16, 2008Inventors: Kejun Kang, Haifeng Hu, Chuanxiang Tang, Yuanjing Li, Qitian Miao, Huayi Zhang, Junli Li, Zhiqiang Chen, Ming Hu, Ming Huang, Yaohong Liu, Wanlong Wu, Hui Zhang, Shenjin Ming
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Publication number: 20080251156Abstract: For quarantine treatment of a farming and forestry product for pest control, a method and a device may irradiate logs as a phytosanitary treatment with electron beams. The method may include: spreading the logs; aligning the spread logs to be flush at one end; conveying the spread and flush logs laterally; conveying the logs longitudinally through an irradiation field formed by accelerators to provide treatment of irradiation with the electron beams; throwing the irradiated logs out; and laterally conveying the logs away. The device may include a conveying device for conveying the logs, a shielding structure surrounding the conveying device, and accelerators provided in the conveying path of the conveying device. Two or more accelerators may be provided in centrosymmetry about the conveying path.Type: ApplicationFiled: April 11, 2008Publication date: October 16, 2008Inventors: Kejun KANG, Haifeng Hu, Chuanxiang Tang, Yuanjing Li, Qitian Miao, Huayi Zhang, Junli Li, Zhiqiang Chen, Ming Hu, Ming Huang, Yaohong Liu, Wanlong Wu, Hui Zhang, Shenjin Ming
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Publication number: 20080131312Abstract: The present invention discloses a mobile electron beam radiation sterilizing apparatus, comprising: a movable chassis vehicle (1); a cabinet body (2) installed on the chassis vehicle (1); an electron accelerator (6) which generates electron beam for articles to be radiation-processed; an accelerator control box (31), which controls operation of the accelerator, wherein the electron accelerator (6) is provided in the cabinet body. The invention has advantages as following: since the electron accelerator is provided in the cabinet body of the chassis vehicle, it has a small volume with flexible maneuverability, which can be transferred rapidly in a short time. In addition, the apparatus has no additional requirement of using environment, and does not need any additional construction. The invention can implement electron beam radiation for all kinds of documents and mails and achieve rapid and complete sterilization, reaching safety purpose.Type: ApplicationFiled: June 8, 2007Publication date: June 5, 2008Applicants: Tsinghua University, Nuctech Company LimitedInventors: Kejun Kang, Huayi Zhang, Zhiqiang Chen, Yuanjing Li, Chuanxiang Tang, Yaohong Liu, Huaibi Chen, Huaping Tang, Nan Jiang, Dongsheng Zhang, Yu He, Feng Gao, Weiqiang Guan, Jian Li, Yanfeng Cao
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Publication number: 20080089469Abstract: A mobile vehicle inspection system includes a moving device; a driving device for driving the moving device to move during scanning inspection; a radiation source disposed on the moving device for emitting a ray; a rotary table pivotally disposed on the moving device; an upright post installed on the rotary table at a lower end of the upright post; traverse detector beam having an end connected with an upper end of the upright post; the upright detector beam having an upper end connected with the other end of the traverse detector beam, and extending downwards from the other end of the traverse detector beam so that the upright post, the traverse detector beam and the upright detector beam constitute a frame of a substantial inverted “U” shape, a ray emitted from the radiation source so as to inspect a vehicle to be inspected which passes through the inverted-“U”-shaped frame.Type: ApplicationFiled: October 12, 2007Publication date: April 17, 2008Applicants: Tsinghua University, Nuctech Company LimitedInventors: Zhiqiang Chen, Kejun Kang, Haifeng Hu, Yuanjing Li, Hua Peng, Chuanxiang Tang, Shangmin Sun, Yinong Liu, Jianmin Li, Junli Li, Li Zhang, Yaohong Liu, Nan Jiang, Zhongrong Yang, Tao Wang
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Publication number: 20070269013Abstract: 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: ApplicationFiled: April 23, 2007Publication date: November 22, 2007Inventors: Yaohong Liu, Chuanxiang Tang, Zhiqiang Chen, Huaibi Chen, Jinsheng Liu, Jianjun Gao
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Publication number: 20070183568Abstract: The present invention discloses a method for inspecting an object using multi-energy radiations and an apparatus thereof. The method comprises the steps of: causing multi-energy radiations to interact with an object under inspection; detecting and recording detection values after an interaction between the multi-energy radiations and the object under inspection; substituting a portion of the detection values into a predetermined calibration function to obtain information comprising primary material attribute; and determining further material attributes of the object by applying a set of functions suitable for a energy band corresponding to the information. The present invention is applicable to the large container cargo inspection without opening containers at customs, ports and airports.Type: ApplicationFiled: December 29, 2006Publication date: August 9, 2007Inventors: Kejun Kang, Haifeng Hu, Zhiqiang Chen, Yuanjing Li, Xuewu Wang, Chuanxiang Tang, Liming Wang, Yinong Liu, Yaohong Liu, Li Zhang, Jianmin Li, Huaqiang Zhong, Jianping Cheng, Huaibi Chen, Hua Peng, Yali Xie, Junli Li, Ning Kang, Qinghua Li
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Publication number: 20070176116Abstract: A self-shielded sterilization apparatus using an electron beam, comprising: an electron beam irradiator for irradiating an electron beam; a shielding for shielding the electron beam irradiated from the electron beam irradiator and a bremsstrahlung of the electron beam; a tray disposed within the shielding for placing thereon an object to be irradiated; an opening for placing an object into and taking the object out of the shielding; and a shielding door for closing the opening. With the above configurations, the apparatus avoids the shield construction taking a large area and the complicated transporting device, which facilitates a miniaturization of the apparatus.Type: ApplicationFiled: July 24, 2006Publication date: August 2, 2007Inventors: Haifeng Hu, Zhiqiang Chen, Junli Li, Chuanxiang Tang, Jianping Cheng, Shenjin Ming, Bing Wang, Yanfeng Cao
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Publication number: 20070170375Abstract: Disclosed is a device for outputting high and/or low energy X-rays, in which the electron gun power supply provides power to the electron linear accelerating tube under the control of the control system; the microwave power source accelerates electron beams generated by the electron linear accelerating tube under the control of the control system; the electron linear accelerating tube is connected to the electron gun power supply and the microwave power source respectively, to generate high energy electron beams; the high-voltage electron gun power supply provides power to the high-voltage electron gun under the control of the control system; the high-voltage electron gun is connected to the voltage electron gun power supply to generate low energy electron beams; the radiation target receives the high energy electron beams to generate high energy transmission X-rays, and/or receive the low energy electron beams to generate low energy reflection X-rays.Type: ApplicationFiled: December 28, 2006Publication date: July 26, 2007Inventors: Chuanxiang Tang, Huaibi Chen, Yinong Liu, Jianping Cheng, Yaohong Liu, Renkai Li
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Patent number: 6922461Abstract: An inspection system for air cargoes, in which an accelerator, a collimator, and a vertical detector arm are all mounted on the floor; detectors are provided within both the horizontal detector arm and the vertical arm; the accelerator, the collimator, the horizontal detector arm and the vertical detector arm are provided in a same plane; the horizontal detector arm is supported by the upper end of the collimator, the vertical detector arm and the horizontal detector arm are connected to each other and provided in the side opposite to the accelerator; a stable portal-shaped frame is formed by means of the collimator, the horizontal detector arm and the vertical detector arm; the conveying device is located under the horizontal detector arm, being perpendicular to the portal-shaped frame, the collimator is provided between the conveying device and the frame.Type: GrantFiled: February 10, 2004Date of Patent: July 26, 2005Assignees: Tshinghua University, Nuctech Company LimitedInventors: Kejun Kang, Wenhuan Gao, Jianmin Li, Zhiqiang Chen, Yinong Liu, Yuanjing Li, Chuanxiang Tang, Junli Li, Li Zhang, Jianjun Su, Rongxuan Liu
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Patent number: 6920197Abstract: A vehicle-carried mobile container inspection apparatus characterized in that the mobile container inspection apparatus comprises a first box-shaped cabin arranged in the front portion of the chassis and provided with a workroom accommodating a scan control module, an image acquisition module and an operation/inspection module; and a second box-shaped cabin and a third box-shaped cabin both arranged on the rear portion of the rotatable platform, in which the second box-shaped cabin is arranged on the top of the third box-shaped cabin, the control unit of the radiation source is accommodated in the second box-shaped cabin, the third box-shaped cabin is arranged under the rotatable platform, the radiation source is arranged in the third box-shaped cabin, the level of the radiation source from which the X-ray beam emit is arranged below the level of the chassis, the scanning vehicle is provided with a driving means to smoothly move the scanning vehicle the rotatable platform is provided with a rotatably drivingType: GrantFiled: October 15, 2003Date of Patent: July 19, 2005Assignees: Tsinghua University, Nuctech Company LimitedInventors: Kejun Kang, Wenhuan Gao, Yinong Liu, Yuanjing Li, Jianmin Li, Chuanxiang Tang, Junli Li, Hua Peng, Quanwei Song, Shuxiong Cao, Liwei Song
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Publication number: 20040213374Abstract: An inspection system for air cargoes, in which an accelerator, a collimator, and a vertical detector arm are all mounted on the floor; detectors are provided within both the horizontal detector arm and the vertical arm; the accelerator, the collimator, the horizontal detector arm and the vertical detector arm are provided in a same plane; the horizontal detector arm is supported by the upper end of the collimator, the vertical detector arm and the horizontal detector arm are connected to each other and provided in the side opposite to the accelerator; a stable portal-shaped frame is formed by means of the collimator, the horizontal detector arm and the vertical detector arm; the conveying device is located under the horizontal detector arm, being perpendicular to the portal-shaped frame, the collimator is provided between the conveying device and the frame.Type: ApplicationFiled: February 10, 2004Publication date: October 28, 2004Applicants: Tsinghua University, Nuctech Company LimitedInventors: Kejun Kang, Wenhuan Gao, Jianmin Li, Zhiqiang Chen, Yinong Liu, Yuanjing Li, Chuanxiang Tang, Junli Li, Li Zhang, Jianjun Su, Rongxuan Liu
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Publication number: 20040125914Abstract: A vehicle-carried mobile container inspection apparatus characterized in that the mobile container inspection apparatus comprises a first box-shaped cabin arranged in the front portion of the chassis and provided with a workroom accommodating a scan control module, an image acquisition module and an operation/inspection module; and a second box-shaped cabin and a third box-shaped cabin both arranged on the rear portion of the rotatable platform, in which the second box-shaped cabin is arranged on the top of the third box-shaped cabin, the control unit of the radiation source is accommodated in the second box-shaped cabin, the third box-shaped cabin is arranged under the rotatable platform, the radiation source is arranged in the third box-shaped cabin, the level of the radiation source from which the X-ray beam emit is arranged below the level of the chassis, the scanning vehicle is provided with a driving means to smoothly move the scanning vehicle; the rotatable platform is provided with a rotatably drivingType: ApplicationFiled: October 15, 2003Publication date: July 1, 2004Applicant: Tsinghua University & Nuctech Company LimitedInventors: Kejun Kang, Wenhuan Gao, Yinong Liu, Yuanjing Li, Jianmin Li, Chuanxiang Tang, Junli Li, Hua Peng, Quanwei Song, Shuxiong Cao, Liwei Song
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Patent number: 6563903Abstract: A relocatable container inspection device, which is constituted by modularized units, is used for inspecting a container.Type: GrantFiled: July 23, 2001Date of Patent: May 13, 2003Assignees: Tsinghua University, Nuctech Company LimitedInventors: Kejun Kang, Wenhuan Gao, Yinong Liu, Zhiqiang Chen, Yuanjing Li, Jianmin Li, Chuanxiang Tang, Junli Li, Huayi Zhang, Wanlong Wu, Zhizhong Liang, Dong Yun, Ou Sun, Jianjun Su, Shangmin Sun
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Publication number: 20020136353Abstract: A relocatable container inspection device, which is constituted by modularized units, is used for inspecting a container.Type: ApplicationFiled: July 23, 2001Publication date: September 26, 2002Inventors: Kejun Kang, Wenhuan Gao, Yinong Liu, Zhiqiang Chen, Yuanjing Li, Jianmin Li, Chuanxiang Tang, Junli Li, Huayi Zhang, Wanlong Wu, Zhizhong Liang, Dong Yun, Ou Sun, Jianju Su, Shangmin Sun