Unlock instant, AI-driven research and patent intelligence for your innovation.

A millimeter wave security imaging device

A millimeter-wave imaging and imaging device technology, which is applied in measuring devices, radio wave measurement systems, radio wave reflection/re-radiation, etc., can solve problems such as inability to achieve real-time imaging, long scanning time, and low radiation energy

Active Publication Date: 2021-06-29
成都中宇微芯科技有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing active millimeter-wave scanning equipment generally adopts mechanical rotary scanning, and the millimeter-wave antenna scans through the cylindrical rotation of the area to be scanned. Therefore, the base area of ​​the entire human body security inspection system is often large, the equipment is complicated, and it needs to be surrounded by a cylinder. Scanning takes a long time and requires high equipment accuracy, so the cost is high
[0004] Compared with the active millimeter-wave scanning equipment, the passive millimeter-wave imaging system has a simpler structure and lower implementation cost. However, due to the low radiation energy of the object in the millimeter-wave band, the millimeter-wave passive imaging device needs to improve the imaging performance through long-term integration. Signal-to-noise ratio, so the imaging speed is slow and real-time imaging cannot be achieved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A millimeter wave security imaging device
  • A millimeter wave security imaging device
  • A millimeter wave security imaging device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 As shown, a millimeter-wave security imaging device includes a background layer 1, a millimeter-wave auxiliary source 2, a reflective surface 4 and a millimeter-wave imaging array 3, wherein the background layer 1 is arranged perpendicular to the horizontal plane, and the millimeter-wave auxiliary source 2 is used to emit auxiliary millimeter-wave signals, the millimeter-wave signals are reflected by the reflective surface 4 and then irradiated to the background layer 1, and the detected object located between the background layer 1 and the millimeter-wave auxiliary source 2 reflects the millimeter-wave, and other millimeter-wave signals The wave is absorbed by the background layer 1. The background layer 1 is made of wave-absorbing material, which can be a plane layer, an arc surface layer or a spherical surface layer, so as to highlight the imaging target. The millimeter wave imaging array 3 collects the millimeter wave signal reflected again by the r...

Embodiment 2

[0042] Such as Figure 5 , figure 2 with image 3 As shown, the difference between embodiment 2 and embodiment 1 is that it also includes a focusing lens 7, and the focusing lens 7 is arranged between the reflecting surface 4 and the auxiliary millimeter wave source 2, and the auxiliary millimeter wave source 2 and the millimeter wave imaging array 3 Set on the same side of the focusing lens 7.

[0043] The auxiliary millimeter wave emitted by the transmitting antenna 24 of the millimeter wave auxiliary source 2 is focused and integrated by the focusing lens 7, and reflected to the object to be detected by the reflecting surface 4; the millimeter wave reflected by the object to be detected is reflected by the reflecting surface 4, and then passes The focusing lens 7 forms an image in the imaging array after focusing.

[0044] The millimeter-wave auxiliary source 2 includes a voltage-controlled oscillator 21, a frequency multiplier 22, a power amplifier 23, and a transmitting...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a millimeter-wave security imaging device, which includes a background layer, a millimeter-wave auxiliary source, a millimeter-wave imaging array, and a reflection surface. The reflection surface is used to reflect electromagnetic waves emitted by the millimeter-wave auxiliary source to form a detection area. The millimeter-wave The imaging array is used to receive echoes reflected by the reflective surface to form an imaging area, and the detection area formed by the shaped reflection of the electromagnetic wave coincides with the imaging area, and a scanning device for driving the movement of the reflective surface is also arranged on the reflective surface. The millimeter-wave security inspection imaging device provided by the present application has the advantages of simple structure, high resolution, fast imaging speed, high efficiency, and real-time imaging.

Description

technical field [0001] The invention relates to the field of millimeter wave security inspection, in particular to a millimeter wave security inspection imaging device. Background technique [0002] Millimeter wave imaging is mainly divided into millimeter wave active imaging and millimeter wave passive imaging. The millimeter-wave image resolution obtained by the millimeter-wave active imaging system is good, so it has been more and more widely used in the security inspection system. [0003] However, the existing active millimeter-wave scanning equipment generally adopts mechanical rotary scanning, and the millimeter-wave antenna scans through the cylindrical rotation of the area to be scanned. Therefore, the base area of ​​the entire human body security inspection system is often large, the equipment is complicated, and it needs to be surrounded by a cylinder. Scanning takes a long time and requires high equipment precision, so the cost is high. [0004] Compared with t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01V8/00G01S13/88G01S13/89
Inventor 邓小东
Owner 成都中宇微芯科技有限公司