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1. 发明授权

US09365983B2 Onsite steel rail laser processing vehicle 有权
标题翻译：现场钢轨激光加工车
公开(公告)号：US09365983B2
公开(公告)日：2016-06-14
申请号：US14375970
申请日：2013-06-13
申请人： Wuhan NRD Laser Engineering Co., Ltd , HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
发明人： Xiaoyan Zeng , Qianwu Hu , Chongyang Li , Yinlan Zheng , Min Du
IPC分类号： B60F1/00 , E01B31/18 , B61D15/00 , B61K9/08 , B60F1/04
CPC分类号： E01B31/18 , B60F1/00 , B60F1/04 , B60F2301/02 , B60F2301/10 , B61D15/00 , B61K9/08
摘要： The invention discloses an on-line laser processing vehicle for a rail, including a chassis, a vehicle body, a steer-control chamber and a container; the steer-control chamber includes a console, a CCD monitoring system and a drive-switching operating system; a dual driving system and switching mechanism, which with a process-operation driving system, a conventional operation driving system and a switching mechanism, is disposed in the container; the process-operation driving system operates to provide driving power for the laser processing vehicle during laser processing, and precisely controls moving speed and distance of the laser processing vehicle; the switching mechanism operates to implement switching between the conventional operation driving system and the process-operation driving system. The invention ensures accurate processing trajectories of the laser processing vehicle during laser processing; facilitates on-line laser processing of a variety of rails, such as the rails of main line, curved rails, guard rails, switch rails and so on, so that wear resistance of the processed rail is greatly improved, and meets requirements of high-speed and heavy haul trains for wear resistance of the rail.
摘要翻译：本发明公开了一种用于轨道的在线激光加工车辆，包括底盘，车身，转向控制室和容器; 转向控制室包括控制台，CCD监控系统和驱动切换操作系统; 具有处理操作驱动系统，常规操作驱动系统和切换机构的双驱动系统和切换机构设置在容器中; 该处理操作驱动系统在激光加工期间为激光加工车辆提供驱动力，并精确控制激光加工车辆的移动速度和距离; 切换机构操作以实现常规操作驱动系统和处理操作驱动系统之间的切换。本发明确保激光加工车辆在激光加工过程中精确的加工轨迹; 便于在线激光加工各种导轨，如主线，弯道，护栏，开关导轨等轨道，从而大大提高了加工轨道的耐磨性，高速和重载铁路的耐磨性。

2. 发明授权

US10106864B2 Method and apparatus for laser quenching 有权
公开(公告)号：US10106864B2
公开(公告)日：2018-10-23
申请号：US14765516
申请日：2013-11-07
申请人： WUHAN NRD LASER ENGINEERING CO., LTD , HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
发明人： Xiaoyan Zeng , Qianwu Hu , Yinlan Zheng , Ming Jiang , Chongyang Li , Zhao Ren , Kun Li
IPC分类号： C21D1/09 , C21D1/70
摘要： Provided are a method and an apparatus for laser quenching. The method utilizes a scanning galvanometer, and involves laser quenching via irradiation with intermittent, repeated scans, rather than a single scan as in the prior art. The method results in increased laser energy absorbed by the metal base and improved depth of thermal conduction, while avoiding melting at the metal surface, thus providing a significantly improved laser quenching process. The apparatus can include a laser, a control system, a light guiding system, a mechanical motion device and a galvanometer.

3. 发明申请

US20150020707A1 ONSITE STEEL RAIL LASER PROCESSING VEHICLE 有权
标题翻译： ONSITE钢铁激光加工车
公开(公告)号：US20150020707A1
公开(公告)日：2015-01-22
申请号：US14375970
申请日：2013-06-13
申请人： Wuhan NRD Laser Engineering Co., Ltd. , HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
发明人： Xiaoyan Zeng , Qianwu Hu , Chongyang Li , Yinlan Zheng , Min Du
IPC分类号： E01B31/18 , B61D15/00 , B60F1/00
CPC分类号： E01B31/18 , B60F1/00 , B60F1/04 , B60F2301/02 , B60F2301/10 , B61D15/00 , B61K9/08
摘要： The invention discloses an on-line laser processing vehicle for a rail, including a chassis, a vehicle body, a steer-control chamber and a container; the steer-control chamber includes a console, a CCD monitoring system and a drive-switching operating system; a dual driving system and switching mechanism, which with a process-operation driving system, a conventional operation driving system and a switching mechanism, is disposed in the container; the process-operation driving system operates to provide driving power for the laser processing vehicle during laser processing, and precisely controls moving speed and distance of the laser processing vehicle; the switching mechanism operates to implement switching between the conventional operation driving system and the process-operation driving system. The invention ensures accurate processing trajectories of the laser processing vehicle during laser processing; facilitates on-line laser processing of a variety of rails, such as the rails of main line, curved rails, guard rails, switch rails and so on, so that wear resistance of the processed rail is greatly improved, and meets requirements of high-speed and heavy haul trains for wear resistance of the rail.
摘要翻译：本发明公开了一种用于轨道的在线激光加工车辆，包括底盘，车身，转向控制室和容器; 转向控制室包括控制台，CCD监控系统和驱动切换操作系统; 具有处理操作驱动系统，常规操作驱动系统和切换机构的双驱动系统和切换机构设置在容器中; 该处理操作驱动系统在激光加工期间为激光加工车辆提供驱动力，并精确控制激光加工车辆的移动速度和距离; 切换机构操作以实现常规操作驱动系统和处理操作驱动系统之间的切换。本发明确保激光加工车辆在激光加工过程中精确的加工轨迹; 便于在线激光加工各种导轨，如主线，弯道，护栏，开关导轨等轨道，从而大大提高了加工轨道的耐磨性，高速和重载铁路的耐磨性。

4. 发明授权

US10808364B2 Onsite steel rail laser processing engineering vehicle 有权
公开(公告)号：US10808364B2
公开(公告)日：2020-10-20
申请号：US16092676
申请日：2018-01-24
申请人： WUHAN NRD LASER ENGINEERING CO., LTD. , HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
发明人： Xiaoyan Zeng , Qianwu Hu , Pinghua Guo , Xiaoming Xu , Ming Jiang , Dengzhi Wang , Chongyang Li , Li Meng
IPC分类号： B23K26/06 , E01B31/18 , B60F1/00 , C21D9/04 , C21D1/09 , B61D15/00 , B23K26/08
摘要： An onsite steel rail laser processing engineering vehicle, including a laser processing power engineering vehicle and a laser processing cart, the laser processing power engineering vehicle is connected to the laser processing cart; the onsite steel rail laser processing engineering vehicle further comprises a transport mechanism disposed on the laser processing power engineering vehicle; through movement and rotation, the transport mechanism transports the laser processing cart into the laser processing power engineering vehicle or transports the laser processing cart out from the laser processing power engineering vehicle and places it on rails.

5. 发明授权

US10309831B2 Dynamic calibration method for echelle spectrometer in laser-induced breakdown spectroscopy 有权
公开(公告)号：US10309831B2
公开(公告)日：2019-06-04
申请号：US15771338
申请日：2017-04-24
申请人： HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
发明人： Xiangyou Li , Meng Shen , Zhongqi Hao , Xinyan Yang , Jiaming Li , Xiaoyan Zeng , Yongfeng Lu
IPC分类号： G01J3/02 , G01J3/18 , G01J3/443 , G01N21/71
摘要： The present invention belongs to the technical field of elemental analysis, and more particularly, relates to a dynamic calibration method for echelle spectrometer in laser-induced breakdown spectroscopy, comprising: S1: collecting a standard light source by using an echelle spectrometer; S2: in combination with a calibration function, calculating a pixel position coordinate ({circumflex over (x)},ŷ) corresponding to a spectral wavelength ŵ; S3: performing dynamic searching and filtering near the pixel position coordinate ({circumflex over (x)},ŷ) to obtain a set D of all pixel position coordinates, and adjusting all original intensity values in the set D to obtain intensity values F(Ix,y), and S4: calculating a spectral line intensity value after dynamic calibration by summing the adjusted intensity values F(Ix,y), thereby completing dynamic calibration of the result of the echelle spectrometer. The method in the present invention can overcome the shortcoming, i.e., the existing echelle spectrometer is only calibrated before measurement without solving the spectral line drift during use, increasing the absolute intensity of the wavelength and reducing the detection limit of the quantitative analysis, as well as improving the precision of the quantitative analysis of an element to be analyzed.

6. 发明授权

US10267741B2 Method for improving detective sensitivity on carbon element in laser-induced breakdown spectroscopy 有权
公开(公告)号：US10267741B2
公开(公告)日：2019-04-23
申请号：US16035072
申请日：2018-07-13
申请人： Huazhong University of Science and Technology
发明人： Xiangyou Li , Jiaming Li , Lianbo Guo , Xiaoyan Zeng , Yongfeng Lu , Zhongqi Hao , Ran Zhou , Yun Tang , Ping Yang
IPC分类号： G01J3/30 , G01N21/71 , G01J3/10 , G01N21/64 , G01N21/75
摘要： The present invention belongs to the field of laser plasma emission spectrometry, and in particular relates to a method for improving the detection sensitivity on a carbon element in laser-induced breakdown spectroscopy. The method specifically comprises the following steps: ablating the surface of a sample to be tested by using a laser beam emitted so as to rapidly heat the surface of the sample and the ambient air close to the surface of the sample into plasma, atomize carbon in the sample and nitrogen in the ambient gas, and combine carbon with the nitrogen into C—N radicals; tuning a wavelength-tunable laser to a wavelength needed by stimulated absorption transition of C—N radicals, and outputting a laser beam to radiate the plasma so that stimulated absorption transition of C—N radicals is carried out, then fluorescent signals are emitted with spontaneous radiative transition; collecting and recording an emission fluorescence spectrum of the C—N radicals; and qualitatively or quantitatively analyzing on carbon element. By adopting the method provided by the invention, in a case of hardly affecting the matrix spectrum, C—N radical signal can be enhanced in high selectivity, thereby avoiding the interference generated by the matrix, and spectrum signals of the carbon element in the plasma can be enhanced, thereby improving the detective sensitivity of LIBS on carbon element.

7. 发明授权

US09810634B2 Method for inhibiting self-absorption effect in laser-induced breakdown spectroscopy 有权
公开(公告)号：US09810634B2
公开(公告)日：2017-11-07
申请号：US15182371
申请日：2016-06-14
申请人： HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
发明人： Lianbo Guo , Jiaming Li , Xiangyou Li , Xiaoyan Zeng , Yongfeng Lu , Rongxing Yi , Xinyan Yang , Zhongqi Hao
IPC分类号： G01J3/30 , G01N21/71
CPC分类号： G01N21/718 , G01N21/71 , G01N2201/06113
摘要： Provided is a method for inhibiting self-absorption effect of a LIBS, comprising ablating a to-be-measured sample via a pulse laser thereby generating plasma, and selectively stimulating the plasma using a wavelength-tunable laser beam enabling transition of particles in a ground-state in the plasma to high energy state as stimulated absorption, thereby improving a stimulated absorption transition efficiency of the particles in a ground-state, and preventing plasma spectrum from being influenced by self-absorption effect. The invention is capable of eliminating the self-absorption effect without introducing external interference, obtaining original characteristics of emission spectrum from the center of the plasma, and essentially inhibiting and finally eliminating the self-absorption effect of laser plasma by making use of intrinsic physical property of plasma.

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