China Communication Technology Co., Ltd.

Shenzhen Cct Thz Technology Co., Ltd.

Shenzhen Institute of Terahertz Technology and Innovation

Shenzhen Institute of Terahertz and Innovation

China Communicatton Technology Co. Ltd.

Xiongwei Huang

Chunchao Qi

Shukai Zhao

Guangsheng Wu

Qing Ding

Hanjiang Chen

Rong Wang

Yanli Liu

Chengyan Jia

Chao Sun

Aixian Wang

Juncheng Liu

Yandong Zhang

Xiaoxiang Hou

Beibei Liu

Lingxia Guo

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.

GPU-based human body microwave echo simulation method and system

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.

Millimeter-wave three-dimensional holographic imaging method and system

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.

Apparatus and method for security check of multiple human bodies based on linear frequency modulation

The present disclosure relates to a monitoring method, a monitoring system and a control device for a human-body security-inspection device. The monitoring method includes: collecting operation parameters of preset monitoring points in target circuit modules of the human-body security-inspection device; obtaining parameter ranges according to module identifiers of the target circuit modules and monitoring-point identifiers of the preset monitoring points, wherein the parameter ranges are associated with the module identifiers and the monitoring-point identifiers respectively; determining whether the operation parameters are in the parameter ranges respectively, and then determining location information of a fault point according to the module identifiers and the monitoring-point identifiers if any of the operation parameters is not in a corresponding parameter range. Therefore, the present disclosure can quickly locate the position of the fault point, thus it is convenient in the maintenance and test work, and improve the efficiency of the maintenance and test work.

Monitoring method, monitoring system and control device for human-body security-inspection device

A servo rotary scanning system of three-dimensional holographic imaging may include a servomotor () having a first angle sensor (), a second angle sensor (), a control component (), a servo driver () and a rotary frame (), the servo rotary scanning system of three-dimensional holographic imaging is a full-closed loop servo control system, the second angle sensor () detects an actual rotating angle of the rotary frame () and feeds back a frame feedback signal to the control component (), an instruction signal in the control component () is compared with the frame feedback signal to generate a following error, the first angle sensor () detects an output rotating angle of the servomotor () and feeds back a motor feedback signal to the servo driver (), and the servo driver () controls the servomotor () to rotate according to the following error and the motor feedback signal.

Servo rotary scanning system of three-dimensional holographic imaging

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.

Security check instrument motion control system

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Shenzhen, China

Xiongwei Huang