-
公开(公告)号：US20200150265A1
公开(公告)日：2020-05-14
申请号：US16607577
申请日：2017-09-04
Applicant: China Communication Technology Co., Ltd.
Inventor： Chunchao QI , Guangsheng WU , Shukai ZHAO , Qian XIAO , Aixian WANG
Abstract: A close-range microwave imaging method includes: implementing Fourier transform in a pre-set rotation axis direction on an echo signal reflected from a target object and acquired by rotating an array antenna around the pre-set rotation axis to obtain a first echo signal, wherein the first echo signal is represented in polar coordinates; multiplying the first echo signal by a pre-set reference function to obtain a second echo signal; converting the second echo signal into rectangular coordinates by a pre-set algorithm to obtain a third echo signal; and implementing three-dimensional Fourier transform on the third echo signal to obtain three-dimensional image data of the target object. By means of the method, three-dimensional image data of a target object can be obtained fast, fast imaging of the target object can be realized, the data processing amount is small, the imaging precision is high and the method is easy to implement.
-
公开(公告)号：US20200041691A1
公开(公告)日：2020-02-06
申请号：US16340332
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 , Xiongwei HUANG , Yanli LIU , Chengyan JIA , Shukai ZHAO
Abstract: A GPU-based human body microwave echo simulation method includes: transmitting emulation input parameters from the memory of a CPU host into the display memory of a GPU device; configuring, at the CPU host, parallel computing network parameters to be run at the GPU device; initiating a kernel function for human body microwave echo simulation preset in the CPU host; computing the kernel function in parallel, in a plurality of processing kernels of the GPU device, in a multi-threaded manner, according to the parallel computing network parameters, to obtain simulation echoes of human body microwaves; transmitting the obtained simulation echoes of human body microwaves from the GPU device back to the CPU host. The method makes full use of the characteristic that a GPU can perform parallel computing to accelerate the echo simulation process, greatly improving the real-time performance of echo simulation of a human body microwave scanning and imaging system.
-
公开(公告)号：US20190187327A1
公开(公告)日：2019-06-20
申请号：US16326305
申请日：2016-12-15
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , SHENZHEN VICTOOTH TERAHERTZ TECHNOLOGY CO., LTD.
Inventor： Shukai ZHAO , Chunchao QI , Zhihui FENG , Hanjiang CHEN
Abstract: A disclosed system includes a support frame including a plurality of surfaces, a millimeter-wave transmission link that generates a millimeter-wave transmission signal, a plurality of millimeter-wave array antennas, a millimeter-wave reception link, and an image processing device. The millimeter-wave array antennas are disposed on different surfaces of the support frame, and transmit millimeter-wave transmission signals from different angles to a to-be-detected object and receive echo signals reflected from the to-be-detected object. By providing the millimeter-wave array antennas on each of the plurality of surfaces of the support frame, and transmitting millimeter-wave transmission signals from different angles to a to-be-detected object and receiving echo signals reflected from different angles of the to-be-detected object, a three-dimensional image of the to-be-detected object can be established, thereby achieving omni-directional detection of the to-be-detected object. The system can detect human and objects at the same time, and is convenient, quick and highly accurate.
-
公开(公告)号：US20180313949A1
公开(公告)日：2018-11-01
申请号：US16029679
申请日：2018-07-09
Inventor： Chunchao QI , Zhihui Feng , Guangsheng Wu , Shukai Zhao , Qing Ding
CPC classification number: G01V8/26
Abstract: The present disclosure relates to an inspection device for detecting objects inside shoes, including: a transmitting antenna array configured to radiate a millimeter-wave signal to an under-test object, and a millimeter-wave transmitting branch configured to provide the millimeter-wave signal for the transmitting antenna array; a receiving antenna array configured to receive an echo signal of the under-test object, and a millimeter-wave receiving branch configured to receive the echo signal received by the receiving antenna array; and a slide guide, the transmitting antenna array and the receiving antenna array being slidably connected to the slide guide. By adopting the solution of the present disclosure, convenient and quick inspection for detecting objects inside shoes of a under-test person can be achieved without requiring the under-test person to take off the shoes thereof.
-
公开(公告)号：US20190317208A1
公开(公告)日：2019-10-17
申请号：US16467662
申请日：2017-11-16
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATION
Inventor： Chunchao QI , Aixian WANG , Hanjiang CHEN , Jiaqi RUAN , Juncheng LIU , Qian XIAO , Wei CHEN , Shukai ZHAO
Abstract: A three-dimensional imaging system and method based on rotational scanning is disclosed. The system includes a column-shaped frame with a column-shaped side; a transceiving antenna array element arranged on the column-shaped side that transmits a micro-wave detection signal to a detected object located in the column-shaped frame and receives an echo signal reflected back from the detected object; a signal transceiving device that generates the micro-wave detection signal and sends same to the transceiving antenna array element and processes the echo signal; a rotation control device that controls rotational movement of the transceiving antenna array element so that the transceiving antenna array element transmits the micro-wave detection signal to the detected object in a plurality of angles; and a positioning trigger fixedly arranged on the column-shaped frame and configured to trigger the signal transceiving device when the transceiving antenna array element arrives at a position of the positioning trigger.
-
Patent Agency Ranking
公开(公告)号：US20190227190A1
公开(公告)日：2019-07-25
申请号：US16315582
申请日：2017-07-06
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD , SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATION CO., LTD.
Inventor： Chunchao QI , Chao Sun , Shukai Zhao , Guangsheng WU , Qing DING
Abstract: A millimeter wave security inspection instrument debugging system and a millimeter wave security inspection instrument debugging method, which are used for debugging the imaging definition of a millimeter wave holographic imaging security inspection system. A main control apparatus is used for generating a millimeter wave detection signal and a reference signal. The main control apparatus is also used for, where a millimeter wave transmitting antenna, a millimeter wave receiving antenna and a detected object are respectively located at different relative positions, transmitting the millimeter wave detection signal to the detected object by means of the millimeter wave transmitting antenna, and receiving an echo signal reflected from the detected object by means of the millimeter wave receiving antenna, and then using a holographic image technique to perform three-dimensional imaging according to the reference signal and the echo signal. The main control apparatus can finally obtain a plurality of three-dimensional imaging results, so that the optimal relative positions of the millimeter wave transmitting antenna, the millimeter wave receiving antenna and the detected object can be determined, which results are applied to a millimeter wave holographic imaging security inspection system, thereby improving the imaging definition of the millimeter wave holographic imaging security inspection system.
-
公开(公告)号：US20180321374A1
公开(公告)日：2018-11-08
申请号：US16034380
申请日：2018-07-13
Inventor： Chunchao QI , Rong Wang , Guangsheng Wu , Shukai Zhao , Qing Ding
Abstract: The present disclosure relates to a scanning apparatus and a security-inspection device with the same. The scanning apparatus include: at least one millimeter-wave transreceiving antenna module, wherein the millimeter-wave transreceiving antenna module include a plurality of millimeter-wave transreceiving antenna units each having a signal terminal facing the predetermined scanning area, and a dustproof film covering the signal terminal of each of the millimeter-wave transreceiving antenna units. The scanning mechanism is simple in structure, more convenient for maintenance, and has a lower cost. When each millimeter-wave transceiving antenna unit emits and receives millimeter waves, the millimeter waves pass through the dustproof film without passing through the organic glass, and the attenuation of the millimeter wave signal is small, thereby improving the 3D imaging effect of the security-inspection device.
-
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.
-
9.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.
-
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.
-
-
-
-
-
-
-
-
-
Search Results
18
records
(took 0.031 seconds)
