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公开(公告)号：US20200054236A1
公开(公告)日：2020-02-20
申请号：US16345985
申请日：2017-08-04
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATION
Inventor： Chunchao QI , Aixian WANG , Hanjiang CHEN , Tiansheng ZHANG , Zhihui FENG , Hu YUAN , Shukai ZHAO
Abstract: A security check method includes: pre-creating at least four concurrently operating threads, one thread being responsible for movement control and data acquisition, one thread being responsible for imaging processing, one thread being responsible for interface displaying, and one thread being responsible for target detection and recognition; then the four concurrently operating threads divide original echo data of a human body to be checked into data of a plurality of adjacent overlapped azimuthal segments during data processing and perform individual processing on the data of each azimuthal segment. The security check system includes a thread creating unit, a first thread parallel unit, a second thread parallel unit, a third thread parallel unit, a fourth thread parallel unit, and a thread loop control unit. Because subsequent data processing is not required to be performed after the acquisition of all data is completed, the time for a security check process is reduced.
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52.发明授权公开(公告)号：US10541507B2
公开(公告)日：2020-01-21
申请号：US15561002
申请日：2017-05-23
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATION
Abstract: The present invention relates to a generation device and a generation method of terahertz waves with orbital angular momentum. The generation device comprises a first laser and a second laser; the first laser radiates a first laser beam; the second laser radiates a second laser beam; and the frequency difference between the first laser beam and the second laser beam is within a terahertz wave band. The generation device further comprises an orbital angular momentum generator, a beam combiner and a terahertz radiation generator; the first laser beam passes through the orbital angular momentum generator to generate the first laser beam with the orbital angular momentum; after the first laser beam with the orbital angular momentum and a second laser beam are combined to form a combined beam, the combined beam reaches a terahertz radiation transmitter; the terahertz radiation transmitter performs frequency mixing and filtering processing on the first laser beam A with the orbital angular momentum and the second laser beam B to generate terahertz waves with the orbital angular momentum. Through a simple beam path design, terahertz wave beams with orbital angular momentum, which are low in consumption and high in efficiency, can be obtained.
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53.发明申请公开(公告)号：US20190391531A1
公开(公告)日：2019-12-26
申请号：US16065953
申请日：2016-01-27
Applicant: SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATION , CHINA COMMUNICATION TECHNOLOGY CO., LTD.
Inventor： Chunchao QI , Shukai ZHAO , Juncheng LIU , Guangsheng WU , Qing DING , Chengyan JIA , Beibei LIU , Yandong ZHANG , Yanli LIU
Abstract: A human body security check system based on millimeter wave holographic three-dimensional imaging, comprising a mechanical scanning mechanism, millimeter wave signal transceiver units, an image processing unit (7), and an alarm unit (9). The mechanical scanning mechanism is used for driving the millimeter wave signal transceiver units to simultaneously move horizontally and vertically relative to an individual to be checked (10); the millimeter wave signal transceiver units are used for transmitting millimeter wave signals to the individual to be checked (10) and receiving millimeter wave signals reflected by the individual to be checked (10); the image processing unit (7) is used for performing holographic three-dimensional imaging on the body of the individual to be checked (10) according to the reflected millimeter wave signals so as to obtain a three-dimensional image of the body; the alarm unit (9) is used for comparing the three-dimensional image of the body with a three-dimensional image of a secure body pre-stored in the alarm unit (9), and giving an alarm if the three-dimensional image of the body does not match the three-dimensional image of the secure body pre-stored in the alarm unit. The human body security check system is low in costs because electrical scanning is replaced with mechanical scanning, and features a simple structure, a short production period, high resolution, a short imaging time, and wide application. Also provided is a human body security check method based on millimeter wave holographic three-dimensional imaging.
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公开(公告)号：US20190293833A1
公开(公告)日：2019-09-26
申请号：US16320959
申请日：2016-07-26
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATION
Inventor： Hanjiang Chen , Chunchao Qi , Zhihui Feng , Yanli Liu , Xiaoxiang Hou , Rong Wang
Abstract: A portable security inspection device based on millimetre wave imaging comprising a hand-held body (1), wherein the hand-held body (1) is provided with a millimetre-wave transmitting link (10) for generating a millimetre-wave transmitting signal, a millimetre-wave array antenna (11) for transmitting the millimetre-wave transmitting signal to a detected object and for receiving an echo signal reflected by the detected object, and a millimetre-wave receiving link (12) for processing the echo signal and converting the echo signal into image data of the detected object.
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公开(公告)号：US20190258220A1
公开(公告)日：2019-08-22
申请号：US16319160
申请日：2017-07-13
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , SHENZHEN VICTOOTH TERAHERTZ TECHNOLOGY CO., LTD.
Inventor： Rong Wang , Chunchao Qi , Xiongwei Huang , Guangsheng WU , Shukai Zhao , Qing Ding
IPC: G05B19/4061
Abstract: A security check instrument motion control system includes an FPGA control chip that receives motion instructions, comprising angle, direction, speed and the like, from an upper computer via an upper computer communication module, realizes quick control to a rotation motion module, and controls a motion state of the rotation motion module according to real-time motion information of the rotation motion module detected by a positioning detection module. The motion state includes a motion stop state and a normal rotation state. The FPGA control chip detects the working state of each module in the security check instrument motion control system in real time, and once the security check instrument motion control system has a fault, each module can be subjected to debugging, repairing and maintenance respectively. If the positioning detection module detects that the rotation motion module is abnormal, the FPGA control chip controls the rotation motion module to stop moving.
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Patent Agency Ranking
公开(公告)号：US20190196004A1
公开(公告)日：2019-06-27
申请号：US16327409
申请日：2017-08-04
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATION
Inventor： Shukai ZHAO , Lingxia GUO , Chunchao QI , Xiongwei HUANG , Hanjiang CHEN
CPC classification number: G01S13/887 , G01S13/88 , G01S13/90 , G01S13/9011
Abstract: A millimeter-wave three-dimensional holographic imaging method and system. The method comprises: transmitting a continuous frequency wave to a measured human body, and receiving an echo signal reflected back; performing Fourier transform, phase compensation, inverse Fourier transform, and “non-uniform sampling to uniform sampling” interpolation; and projecting three-dimensional echo data to obtain two-dimensional reconstruction data, and generating a two-dimensional reconstructed image.
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57.发明申请公开(公告)号：US20190181604A1
公开(公告)日：2019-06-13
申请号：US15561002
申请日：2017-05-23
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATION
Abstract: The present invention relates to a generation device and a generation method of terahertz waves with orbital angular momentum. The generation device comprises a first laser and a second laser; the first laser radiates a first laser beam; the second laser radiates a second laser beam; and the frequency difference between the first laser beam and the second laser beam is within a terahertz wave band. The generation device further comprises an orbital angular momentum generator, a beam combiner and a terahertz radiation generator; the first laser beam passes through the orbital angular momentum generator to generate the first laser beam with the orbital angular momentum; after the first laser beam with the orbital angular momentum and a second laser beam are combined to form a combined beam, the combined beam reaches a terahertz radiation transmitter; the terahertz radiation transmitter performs frequency mixing and filtering processing on the first laser beam A with the orbital angular momentum and the second laser beam B to generate terahertz waves with the orbital angular momentum. Through a simple beam path design, terahertz wave beams with orbital angular momentum, which are low in consumption and high in efficiency, can be obtained.
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公开(公告)号：US20190138802A1
公开(公告)日：2019-05-09
申请号：US16305839
申请日：2017-05-17
Applicant: SHENZHEN VICTOOTH TERAHERTZ TECHNOLOGY CO., LTD , CHINA COMMUNICATION TECHNOLOGY CO., LTD.
Inventor： Chunchao QI , Zhiquan LI , Hanjiang CHEN , Guangsheng WU , Shukai ZHAO , Qing DING
Abstract: This invention relates to a method and a device for human body gender detection in a microwave image. The structure feature of a human body itself as well as the constructed vertical direction spatial distribution histogram and horizontal direction spatial distribution histogram are used to accurately locate the chest position and the crotch position of the human body. A human body chest subimage is extracted according to the chest position, and a human body crotch subimage is extracted according to the crotch position. Then, the feature values of the human body chest subimage and the human body crotch subimage are respectively extracted by a feature value extraction algorithm, and the human body gender is automatically identified according to the feature values. The technical solution of this invention is simple, and after experimental verification, can be effectively applied in actual microwave security check system. This technical solution has high real time and high robustness, and its correct recognition rate meets the operating requirements. As such, the problem of how to identify human body gender in real time and accurately in a microwave security check system is solved. Besides, because the present invention can accurately locate the chest position and the crotch position of a human body, the human body's private part can be shielded and protected effectively according to this invention.
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59.发明申请公开(公告)号：US20190025421A1
公开(公告)日：2019-01-24
申请号：US16065998
申请日：2016-01-27
Inventor： Chunchao QI , Shukai ZHAO , Beibei LIU , Guangsheng WU , Qing DING , Xiongwei HUANG , Jungcheng LIU , Chengyan JIA , Yandong ZHANG , Yanli LIU
Abstract: This invention provides a security check apparatus for multiple human bodies based on linear frequency modulation, which comprises a scanning device, a millimeter wave signal transceiver module, and an image processing unit. The scanning device comprises several detection seats and several guideways and motors arranged on the detection seats; the detection seats are configured to accommodate persons to be security checked; a set of the millimeter wave signal transceiver modules are arranged on each guideway, and each millimeter wave signal transceiver module is driven by the motor to move along the guideway; the several detection seats are arranged in longitudinal direction. The millimeter wave signal transceiver modules are configured to transmit millimeter wave signals to the persons to be security checked and receive millimeter wave signals reflected from the persons to be security checked. The image processing unit is configured to perform holographic 3D imaging on the human bodies of the persons to be security checked based on the reflected millimeter wave signals to obtain 3D images of the human bodies. This invention also provides a security check method for multiple human bodies based on linear frequency modulation. This invention has the advantages of low cost, simple structure, easy integration, high resolution, more persons are detected per unit time, and no radiation hazard to human bodies.
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公开(公告)号：US09945776B2
公开(公告)日：2018-04-17
申请号：US15315604
申请日：2015-09-14
Applicant: CHINA COMMUNICATION TECHNOLOGY CO.,LTD. , SHENZHEN VICTOOTH TERAHERTZ TECHNOLOGY CO.,LTD.
Inventor： Guangsheng Wu , Yandong Zhang , Qing Ding
IPC: G01N21/3581 , B07C1/00
CPC classification number: G01N21/3581 , B07C1/00 , B07C2201/006 , G01B9/02 , G01N2201/0633 , G01N2201/068 , G01N2201/12
Abstract: The present invention discloses a mail detection device and method. The device comprises a broad-band terahertz generator, a collimator, a beam splitter, a fixed reflector, a movable reflector, a wave buncher, a matrix detector, an acquisition card and an information processing module; wherein the information processing module is used for generating a terahertz image of a mail to be detected according to the electric signals sent by the acquisition card when the movable reflector is motionless; and when finding suspicious articles according to the terahertz image of a mail to be detected, the information processing module controls the movable reflector to move, and generates spectral information of the suspicious articles according to an electric signal sequence sent by the acquisition card during the movement of the movable reflector.
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