公开(公告)号：US20190204232A1

公开(公告)日：2019-07-04

申请号：US16234626

申请日：2018-12-28

Applicant: NUCTECH COMPANY LIMITED

Inventor： Hongqiu WANG ,  Zhuo CHEN ,  Lichao JIANG ,  Shixin ZHANG ,  Jianhong ZHANG

IPC: G01N21/65

CPC classification number: G01N21/658 ,  B01L9/52 ,  G01N21/01 ,  G01N2021/0339 ,  G01N2021/651 ,  G01N2201/0221

Abstract: The present invention relates to a Raman-enhanced substrate fixing device and a Raman-enhanced detecting system. the Raman-enhanced substrate fixing device comprises a fixing base, wherein the fixing base is provided with a substrate receiving portion and a probe connecting portion, the substrate receiving portion is used for receiving a Raman-enhanced substrate, the probe connecting portion is used for connection with a probe of a Raman spectrometer, and the probe connecting portion and the substrate receiving portion are disposed such that light emitted by the probe is capable of being irradiated onto the Raman-enhanced substrate.

公开(公告)号：US20180038798A1

公开(公告)日：2018-02-08

申请号：US15613265

申请日：2017-06-05

Applicant: Nuctech Company Limited

Inventor： Li ZHANG ,  Ziran ZHAO ,  Jianhong ZHANG ,  Hongqiu WANG ,  Yubo ZHANG ,  Haihui LIU

IPC: G01N21/65 ,  G01J3/02 ,  G01J3/44

CPC classification number: G01N21/65 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0218 ,  G01J3/0221 ,  G01J3/0227 ,  G01J3/0256 ,  G01J3/44 ,  G01J2003/1213 ,  G01N2201/0221 ,  G01N2201/06113 ,  G01N2201/08 ,  G01N2201/0833

Abstract: The disclosure provides a portable Raman device that includes a laser for emitting exciting light; a spectrometer for receiving Raman scattered light and converting the Raman scattered light into an electrical signal after beam splitting; a probe for leading the exciting light to irradiate on a sample and collect the Raman scattered light of the sample; and a fiber system connected between the laser and the probe as well as between the probe and the spectrometer so as to conduct light transmission. In comparison to conventional Raman devices, the portable Raman device of the disclosure has a simplified optical system, such that placement of components of the Raman device are more flexible, the whole size of the Raman device are reduced, and thus requirements of size miniaturization and quick real-time measurement are satisfied.

公开(公告)号：US20190391080A1

公开(公告)日：2019-12-26

申请号：US16467037

申请日：2017-11-07

Applicant: NUCTECH COMPANY LIMITED

Inventor： Ankai WANG ,  Hongqiu WANG ,  Yumin YI ,  Haihui LIU ,  Jianhong ZHANG

IPC: G01N21/65

Abstract: The present disclosure relates to a non-contact type security inspection and method, the system including: a laser source for emitting probe light beams which penetrate through a container or a packaging and are irradiated onto an inspected object contained in the container or the packaging; an optical collection device for collecting an exciting light excited by the probe light beams on the inspected object; a spectrum analyzer for analyzing spectral characteristics of the exciting light collected by the optical collection device so as to determine characteristics of the inspected object; and a shielding apparatus for preventing at least part of the exciting light excited by the probe light beams on the container or the packaging from entering an induction

公开(公告)号：US20170186506A1

公开(公告)日：2017-06-29

申请号：US15273881

申请日：2016-09-23

Applicant: NUCTECH COMPANY LIMITED

Inventor： Li ZHANG ,  Shixin ZHANG ,  Lin YANG ,  Hongqiu WANG ,  Yumin YI ,  Huacheng FENG ,  Jianhong ZHANG

IPC: G21F5/12 ,  G01N21/65

CPC classification number: G21F5/12 ,  F16P3/08 ,  G01J3/0291 ,  G01J3/44 ,  G01N21/35 ,  G01N21/65 ,  G01N2201/0225

Abstract: Embodiments of the present invention provide a protective device including a sliding door and a housing, together forming a closed space, wherein, a guide rail is provided on the housing, and the sliding door is slidable along the guide rail to open or close the closed space. In addition, embodiments of the present invention also provide a laser Raman safety inspection apparatus including the abovementioned protective device.

公开(公告)号：US20140320855A1

公开(公告)日：2014-10-30

申请号：US14145454

申请日：2013-12-31

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Zhiqiang CHEN ,  Li ZHANG ,  Jianhong ZHANG ,  Hongqiu WANG ,  Ziran ZHAO ,  Jianping GU ,  Zhiming WANG ,  Qingping HUANG ,  Yumin YI

IPC: G01N21/65

CPC classification number: G01N21/65

Abstract: A raman spectroscopy method of measuring melamine contents in dairy products having different matrixes. The method includes: (a) establishing a database of characteristic curves of dairy products having different matrixes; (b) taking several copies of the dairy products having one certain unknown matrix and adding melamine standard solutions having different concentrations therein, to obtain a series of dairy product samples in which the relative concentrations of the melamine are known; (c) performing raman spectrum testing analysis and obtaining corresponding characteristic peak intensities to obtain a slope of the characteristic curve showing variation of the characteristic peak intensities with the relative concentrations of the melamine; (d) searching the database of step (a) using the slope of the characteristic curve of the dairy product samples to find a matching characteristic curve, and (e) calculating concentration of melamine in the dairy products by using the matched characteristic curve and the characteristic peak intensity.

Abstract translation: 测量具有不同基质的乳制品中三聚氰胺含量的拉曼光谱法。 该方法包括：（a）建立具有不同矩阵的乳制品特征曲线数据库; （b）取几份具有一定未知基质的乳制品，并加入其中浓度不同的三聚氰胺标准溶液，以获得其中已知三聚氰胺的相对浓度的一系列乳制品样品; （c）进行拉曼光谱测试分析并获得相应的特征峰强度，以获得特征曲线的斜率，显示特征峰强度与三聚氰胺的相对浓度的变化; （d）使用奶制品样本的特征曲线的斜率来搜索步骤（a）的数据库，以找到匹配的特征曲线，以及（e）通过使用匹配的特征曲线计算乳制品中三聚氰胺的浓度， 特征峰强度。

公开(公告)号：US20210231568A1

公开(公告)日：2021-07-29

申请号：US16313567

申请日：2018-12-21

Applicant: NUCTECH COMPANY LIMITED

Inventor： Jianhong ZHANG ,  Hongqiu WANG ,  Jiaqian ZUO ,  Haihui LIU

IPC: G01N21/65 ,  G01N21/64

Abstract: A method and an apparatus for inspecting security of an object to be detected. The method includes: guiding an exciting light to the object, collecting a first optical signal from the object and generating .a first spectrum from the first optical signal; guiding the exciting light to the object again after a certain time interval, collecting a second optical signal from the object and generating a second spectrum from the second optical signal; and comparing the first spectrum with the second spectrum to determine whether or not the object is damaged.

公开(公告)号：US20190033128A1

公开(公告)日：2019-01-31

申请号：US16043900

申请日：2018-07-24

Applicant: NUCTECH COMPANY LIMITED

Inventor： Jianhong ZHANG ,  Hongqiu WANG ,  Li ZHANG

IPC: G01J3/02 ,  G01J3/44 ,  G01J3/10 ,  G01N21/65

CPC classification number: G01J3/0208 ,  G01J3/0202 ,  G01J3/021 ,  G01J3/0227 ,  G01J3/0229 ,  G01J3/10 ,  G01J3/44 ,  G01J2003/4424 ,  G01N21/65

Abstract: A Raman spectrum inspection apparatus is provided, including: a exciting light source configured to emit an exciting light to a sample to be inspected; an optical device configured to collect an optical signal from a position, which is irradiated by the exciting light, of the sample to be inspected; and a spectrometer configured to generate a Raman spectrum of the sample to be inspected from the received optical signal, wherein an excitation optical path in which the exciting light passes from the exciting light device to the sample to be inspected and a detection optical path in which the optical signal received by the spectrometer passes from the sample to be inspected to the spectrometer are separated from each other.

公开(公告)号：US20180180761A1

公开(公告)日：2018-06-28

申请号：US15826530

申请日：2017-11-29

Applicant: Nuctech Company Limited

Inventor： Jianhong ZHANG ,  Nei YANG ,  Hongqiu WANG ,  Yumin YI ,  Hu TANG ,  Guohua WEI

IPC: G01V5/00 ,  G01N23/04 ,  G01N21/65

CPC classification number: G01V5/0033 ,  G01N21/65 ,  G01N23/046 ,  G01N2223/1006 ,  G01N2223/419 ,  G01T1/1603 ,  G01V5/005

Abstract: A security inspection apparatus and a security inspection method are disclosed. In one aspect, an example apparatus includes a CT inspection device and a Raman spectrum inspection device, the CT inspection device includes: a CT scanner scanning an object to be inspected to generate a CT image, an image recognizing device recognizing the CT image to check whether or not the object has a suspected hazardous article, and an object marking device making a predetermined marker on the object which has the suspected hazardous article. The Raman spectrum inspection device includes: a Raman spectrum measuring device extracting a Raman spectrum of the suspected hazardous article in the object, a Raman spectrum comparing device comparing the Raman spectrum of the suspected hazardous article with Raman spectra of known compositions to determine a composition of the suspected hazardous article, and an object marker recognizing device recognizing the predetermined marker on the object.

公开(公告)号：US20150185154A1

公开(公告)日：2015-07-02

申请号：US14576699

申请日：2014-12-19

Applicant: Nuctech Company Limited

Inventor： Zhiqiang CHEN ,  Ziran ZHAO ,  Jianhong ZHANG ,  Hongqiu WANG ,  Yumin YI

IPC: G01N21/65

CPC classification number: G01N21/65 ,  G01J3/28 ,  G01J3/44 ,  G01J3/4412 ,  G01N2201/06113 ,  G01N2201/12

Abstract: An embodiment of the present invention provides a Raman spectroscopic detection method for detecting a sample in a vessel, comprising the steps of: (a) measuring a Raman spectrum of the vessel to obtain a first Raman spectroscopic signal; (b) measuring a Raman spectrum of the sample through the vessel to obtain a second Raman spectroscopic signal; (c) removing an interference caused by the Raman spectrum of the vessel from the second Raman spectroscopic signal on basis of the first Raman spectroscopic signal to obtain a third Raman spectroscopic signal of the sample itself; and (d) identifying the sample on basis of the third Raman spectroscopic signal. By means of the above method, the Raman spectrum of the sample in the vessel may be detected correctly so as to identify the sample to be detected efficiently.

Abstract translation: 本发明的一个实施方案提供一种用于检测容器中的样品的拉曼光谱检测方法，包括以下步骤：（a）测量容器的拉曼光谱以获得第一拉曼光谱信号; （b）通过容器测量样品的拉曼光谱，以获得第二拉曼光谱信号; （c）基于所述第一拉曼光谱信号从所述第二拉曼光谱信号中除去由所述容器的拉曼光谱引起的干扰，以获得所述样品本身的第三拉曼光谱信号; 和（d）基于第三拉曼光谱信号鉴定样品。 通过上述方法，可以正确地检测容器中的样品的拉曼光谱，以便有效地鉴定要检测的样品。

公开(公告)号：US20150185076A1

公开(公告)日：2015-07-02

申请号：US14577748

申请日：2014-12-19

Applicant: NUCTECH COMPANY LIMITED

Inventor： Ziran ZHAO ,  Jianhong ZHANG ,  Hongqiu WANG ,  Weiwei WANG ,  Zhiming WANG ,  Yumin YI

IPC: G01J3/02 ,  G01N21/65

CPC classification number: G01J3/0297 ,  G01J3/28 ,  G01J3/44 ,  G01J2003/4424 ,  G01N21/65 ,  G01N2201/06113 ,  G01N2201/12

Abstract: Embodiments of the present invention provide a Raman spectroscopic inspection method, comprising the steps of: measuring a Raman spectrum of an object to be inspected successively to collect a plurality of Raman spectroscopic signals; superposing the plurality of Raman spectroscopic signals to form a superposition signal; filtering out a florescence interfering signal from the superposition signal; and identifying the object to be inspected on basis of the superposition signal from which the florescence interfering signal has been filtered out. By means of the above method, a desired Raman spectroscopic signal may be acquired by removing the interference caused by a florescence signal from a Raman spectroscopic inspection signal of the object. It may inspect correctly the characteristics of the Raman spectrum of the object so as to identify the object effectively.

Abstract translation: 本发明的实施例提供一种拉曼光谱检查方法，包括以下步骤：连续测量待检测物体的拉曼光谱，以收集多个拉曼光谱信号; 叠加多个拉曼光谱信号以形成叠加信号; 从叠加信号滤除荧光干扰信号; 并且根据已经滤除了荧光干扰信号的重叠信号来识别待检查的对象。 通过上述方法，可以通过从对象的拉曼光谱检查信号中去除由荧光信号引起的干扰来获得所需的拉曼光谱信号。 它可以正确地检查物体的拉曼光谱的特征，以有效地识别物体。