CN206339653U - Combined type millimeter wave imaging system - Google Patents
Combined type millimeter wave imaging system Download PDFInfo
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- CN206339653U CN206339653U CN201621213920.2U CN201621213920U CN206339653U CN 206339653 U CN206339653 U CN 206339653U CN 201621213920 U CN201621213920 U CN 201621213920U CN 206339653 U CN206339653 U CN 206339653U
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- millimeter wave
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Abstract
The utility model is related to a kind of combined type millimeter wave imaging system, including the millimeter wave launcher for launching millimeter wave transmission signal to measurand, for being scanned to measurand, receive the millimeter-wave radiation signal that the echo-signal and the measurand that the millimeter wave transmission signal reflects from the measurand are radiated, and change the combined planar speculum of the propagation path of the echo-signal and millimeter-wave radiation signal, with for handling the echo-signal and millimeter-wave radiation signal, and it is converted into the millimeter wave detector of the view data of the measurand；Launch millimeter-wave signal to measurand, measurand is scanned by combined planar speculum, the millimeter-wave radiation signal that the echo-signal and measurand itself that reception millimeter wave transmission signal is reflected from measurand are radiated, enhance the signal intensity that the millimeter wave detector of passive millimeter wave imaging system is received, imaging clearly, Detection results are good.
Description
Technical field
The utility model is related to mm-wave imaging field, more particularly to a kind of combined type millimeter wave imaging system.
Background technology
Because millimeter wave has the advantages that high precision, strong antijamming capability, to human body non-hazardous, progressively turn into peace
The important detection means in the fields such as inspection, Quality Detection.
At present, the millimeter wave imaging system of passive type is by gathering the millimeter-wave signal that measurand is radiated, to it
It is imaged, to realize the inspection to measurand.Because the millimeter-wave signal that measurand is radiated is fainter, exist
It is imaged unsharp problem.
Utility model content
Based on this, it is necessary to provide a kind of combined type millimeter wave imaging system, imaging clearly, Detection results are good.
A kind of combined type millimeter wave imaging system, including：
Millimeter wave launcher, for launching millimeter wave transmission signal to measurand；
Combined planar speculum, for being scanned to measurand, receives the millimeter wave transmission signal from the quilt
The millimeter-wave radiation signal that the echo-signal and the measurand that survey object reflection is returned are radiated, and change the echo
The propagation path of signal and millimeter-wave radiation signal；
Millimeter wave detector, for handling the echo-signal and millimeter-wave radiation signal, and is converted into described
The view data of measurand.
Above-mentioned combined type millimeter wave imaging system, launches millimeter-wave signal to measurand, passes through combined planar speculum
Measurand is scanned, the echo-signal and measurand that reception millimeter wave transmission signal is reflected from measurand are certainly
The millimeter-wave radiation signal that body is radiated, enhances the letter that the millimeter wave detector of passive millimeter wave imaging system is received
Number intensity, imaging clearly, Detection results are good.
Brief description of the drawings
Fig. 1 is the structural representation of combined type millimeter wave imaging system in an embodiment；
Fig. 2 is the structure that combined type millimeter wave imaging system is vertically scanned to measurand in an embodiment
Schematic diagram；
Fig. 3 is the structure that combined type millimeter wave imaging system is scanned to measurand in the horizontal direction in an embodiment
Schematic diagram.
Embodiment
Referring to Fig. 1, Fig. 1 is the structural representation of combined type millimeter wave imaging system in an embodiment.
In the present embodiment, the combined type millimeter wave imaging system, including millimeter wave launcher 10, combined planar speculum
With millimeter wave detector 13.
Millimeter wave launcher 10 is used to launch millimeter wave transmission signal to measurand 20.
In wherein one embodiment, this millimeter of wave launcher 10 is phased array millimeter wave launcher, including millimeter amplitude
Penetrate source and phased array antenna.Phased array millimeter wave launcher just can be to measurand 20 in the case where not needing Mechanical Moving
It is scanned, easy to operate, sweep speed is fast, and effect is good.
In wherein one embodiment, phased array antenna is linear array antenna or planar array antenna, is respectively used to pair
The measurand 20 carries out one-dimensional scanning or two-dimensional scan, and correspondence realizes the one-dimensional sensing of wave beam that millimeter wave launcher 10 is sent
Variable or two-dimentional sensing is variable.Wherein, planar array antenna can realize two-dimensional scan, and sweep speed faster, specifically can root
Selected according to actual demand.
Combined planar speculum is used to be scanned measurand 20, receives the millimeter wave transmission signal from the quilt
The millimeter-wave radiation signal that the echo-signal and the measurand 20 that survey object 20 is reflected are radiated, and change described
The propagation path of echo-signal and millimeter-wave radiation signal.
The combined planar speculum carries out two-dimensional scan by way of coordinating rotation to measurand 20, receives the echo
The millimeter wave detection signal that signal and millimeter-wave radiation signal are collectively forming, changes the propagation path of the millimeter wave detection signal,
So that millimeter wave detector 13 is received.
In wherein one embodiment, referring to Fig. 2, combinations thereof plane mirror includes the first plane mirror 11 and the
Two plane mirrors 12, the first plane mirror 11 and the second plane mirror 12 coordinate rotation, to realize to measurand 20
Two-dimensional scan.
First plane mirror 11 is located at the front end of signal receiving channel, receives above-mentioned millimeter wave detection signal, and pass through
Reflex changes its propagation path, and the second plane mirror 12 is located at the end of signal receiving channel, receives the first plane anti-
The millimeter wave detection signal of the transmission of mirror 11 is penetrated, and changes its propagation path, facilitates millimeter wave detector 13 to receive.
Millimeter wave detector 13 is used to handle the echo-signal and millimeter-wave radiation signal, and is converted into described
The view data of measurand 20.
In wherein one embodiment, the millimeter wave detector 13 include be sequentially connected reception antenna, the first amplifier,
Wave detector, wave filter and the second amplifier, the reception antenna are used to receive the echo-signal and millimeter-wave radiation signal.Its
In, first amplifier is low-noise amplifier, and the second amplifier is low-frequency amplifier.Wave detector is square-law detector, its
The square approximate of output signal and the instantaneous value of the concussion envelope of input signal is directly proportional, without being visited to the millimeter wave received
Survey signal and carry out Frequency mixing processing, it is simple and convenient, accelerate the process of signal transacting.
In wherein one embodiment, the combined type millimeter wave imaging system also includes scan control module, the scanning
Control module is used to control the mirror of 11 and second plane reflection of the first plane mirror 12 to coordinate rotation, to realize to tested pair
As 20 two-dimensional scan.
In wherein one embodiment, the combined type millimeter wave imaging system also includes lens 14, is arranged at described first
Between the signal receiving channel of the plane mirror 12 of plane mirror 11 and second formation, for first plane mirror
The 11 millimeter wave detection signals received are focused processing, and are sent to second plane mirror 12.
The lens 14 include the first planoconvex spotlight and the second planoconvex spotlight, the plane of first planoconvex spotlight and described the
The plane laminating of two planoconvex spotlights, the thickness of second planoconvex spotlight is more than the thickness of first planoconvex spotlight.First is flat
Convex lens receive the millimeter wave detection signal of the first plane mirror 11 reflection, and are focused processing to it, through the second plano-convex
Lens are sent to the second plane mirror 12 after being further focused processing, and focusing effect is good.
Specifically, referring to Fig. 2, when the combined planar speculum vertically, i.e., Z axis is scanned to measurand 20
When, if millimeter wave detection signal incides the first plane mirror 11 along the direction vertical with Z axis, through the first plane mirror 11
After reflection, launched along the direction parallel to Z axis；If the inclined of α degree occurs for the incident angle of the millimeter wave detection signal
Turn, as shown in incident dotted line in figure, in order to ensure that the signal after being reflected through the first plane mirror 11 propagates reversely constant, first
Plane mirror 11 needs corresponding rotation alpha/2 degree, as shown in the first plane mirror 11 that dotted line is represented.
Referring to Fig. 3, when the combined planar speculum in the horizontal direction, i.e., when Y-axis is scanned to measurand 20, if milli
Metric wave detectable signal incides the first plane mirror 11 along the direction vertical with Y-axis, after being reflected through the first plane mirror 11,
Launched along the direction parallel to Y-axis, after the second plane mirror 12 again secondary reflection, along the direction vertical with Y-axis
Launch, facilitate the reception of millimeter wave detector 13；If the deflection of α degree occurs for the incident angle of the millimeter wave detection signal,
As shown in incident dotted line in figure, in order to ensure that the signal after being reflected through the second plane mirror 12 propagates reversely constant, so as to milli
The reception of metric wave detector 13, the second plane mirror 12 need to accordingly rotate a certain angle, the second plane represented such as dotted line
Shown in speculum 12.
The first plane of reflection mirror 11 and the second plane mirror 12 is controlled to coordinate rotation through the above way, it is possible to achieve quilt
The two-dimensional scan of object 20 is surveyed, millimeter wave detector 13 can fully get the millimeter wave detection signal of measurand, detected
Sensitivity is high, and imaging effect is good.
In wherein one embodiment, the combined type millimeter wave imaging system also include image processing module 15, for pair
Described image data are handled, and generate the two dimensional image of the measurand 20.
Millimeter wave detector 13 is got after the view data of measurand 20, through 15 pairs of images of image processing module
Data are handled, and can obtain the two dimensional image of measurand 20, facilitate security staff or quality inspection personnel to be checked.This
The outer combined type millimeter wave imaging system can also include warning reminding module, and dangerous goods are carried in discovery measurand 20
When, send warning reminding.
Above-mentioned combined type millimeter wave imaging system, millimeter wave transmission signal is launched to measurand 20, and flat by combination
Face speculum carries out two-dimensional scan to measurand 20, and on the one hand the combined planar speculum receives millimeter wave transmission signal through quilt
The echo-signal formed after object 20 reflects is surveyed, on the other hand, while receiving the millimeter-wave radiation of measurand 20 itself radiation
Signal, forms a kind of active combined type millimeter wave imaging system being combined with passive type, enhances passive millimeter wave
The received signal strength of imaging system, simple in construction, imaging effect is good.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (9)
1. a kind of combined type millimeter wave imaging system, it is characterised in that including：
Millimeter wave launcher, for launching millimeter wave transmission signal to measurand；
Combined planar speculum, for being scanned to measurand, receives the millimeter wave transmission signal from described tested pair
As the millimeter-wave radiation signal that the echo-signal and the measurand that reflect are radiated, and change the echo-signal
With the propagation path of millimeter-wave radiation signal；
Millimeter wave detector, for handling the echo-signal and millimeter-wave radiation signal, and is converted into described tested
The view data of object.
2. combined type millimeter wave imaging system according to claim 1, it is characterised in that the millimeter wave launcher is phase
Control battle array millimeter wave launcher, including millimeter-wave radiation source and phased array antenna.
3. combined type millimeter wave imaging system according to claim 2, it is characterised in that the phased array antenna is linear
Array antenna or planar array antenna, are respectively used to carry out one-dimensional scanning or two-dimensional scan to the measurand.
4. combined type millimeter wave imaging system according to claim 1, it is characterised in that the combined planar speculum bag
The first plane mirror and the second plane mirror are included, first plane mirror and the second plane mirror coordinate rotation,
To realize the two-dimensional scan to measurand.
5. combined type millimeter wave imaging system according to claim 4, it is characterised in that also including scan control module,
The scan control module is used to control first plane mirror and the second plane mirror to coordinate rotation, to realize to quilt
Survey the two-dimensional scan of object.
6. combined type millimeter wave imaging system according to claim 4, it is characterised in that also including lens, is arranged at institute
Between the millimeter wave receiving channel for stating the first plane mirror and the formation of the second plane mirror, for anti-to first plane
The echo-signal for penetrating mirror reception is focused processing, and is sent to second plane mirror.
7. combined type millimeter wave imaging system according to claim 6, it is characterised in that the lens include the first plano-convex
Lens and the second planoconvex spotlight, the plane of first planoconvex spotlight are fitted with the plane of second planoconvex spotlight, and described
The thickness of two planoconvex spotlights is more than the thickness of first planoconvex spotlight.
8. combined type millimeter wave imaging system according to claim 1, it is characterised in that the millimeter wave detector includes
Reception antenna, the first amplifier, wave detector, wave filter and the second amplifier being sequentially connected, the reception antenna are used to receive
The echo-signal and millimeter-wave radiation signal.
9. combined type millimeter wave imaging system according to claim 1, it is characterised in that also including image processing module,
For handling described image data, and generate the two dimensional image of the measurand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621213920.2U CN206339653U (en) | 2016-11-10 | 2016-11-10 | Combined type millimeter wave imaging system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621213920.2U CN206339653U (en) | 2016-11-10 | 2016-11-10 | Combined type millimeter wave imaging system |
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| CN206339653U true CN206339653U (en) | 2017-07-18 |
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| CN201621213920.2U Active CN206339653U (en) | 2016-11-10 | 2016-11-10 | Combined type millimeter wave imaging system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108845369A (en) * | 2018-06-14 | 2018-11-20 | 江苏心磁超导体有限公司 | Terahertz safe examination system |
| CN109558715A (en) * | 2018-10-31 | 2019-04-02 | 维沃移动通信有限公司 | A kind of terminal device and face identification method |
| CN110389388A (en) * | 2019-08-06 | 2019-10-29 | 哈尔滨工业大学 | Mechanical linkage scan-type passive millimeter wave imaging device |
| CN110806589A (en) * | 2019-11-15 | 2020-02-18 | 北京航天易联科技发展有限公司 | Near-field real-time imaging system and method |
-
2016
- 2016-11-10 CN CN201621213920.2U patent/CN206339653U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108845369A (en) * | 2018-06-14 | 2018-11-20 | 江苏心磁超导体有限公司 | Terahertz safe examination system |
| CN109558715A (en) * | 2018-10-31 | 2019-04-02 | 维沃移动通信有限公司 | A kind of terminal device and face identification method |
| CN110389388A (en) * | 2019-08-06 | 2019-10-29 | 哈尔滨工业大学 | Mechanical linkage scan-type passive millimeter wave imaging device |
| CN110389388B (en) * | 2019-08-06 | 2020-11-13 | 哈尔滨工业大学 | Mechanical linkage scanning type passive millimeter wave imaging device |
| CN110806589A (en) * | 2019-11-15 | 2020-02-18 | 北京航天易联科技发展有限公司 | Near-field real-time imaging system and method |
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Effective date of registration: 20211202 Address after: 518000 Shenzhen, Baoan District, Xixiang, Guangdong Xixiang street, thirty-seventh fields, 430 estate. Patentee after: Shenzhen Zhongtou Huaxun Terahertz Technology Co., Ltd Address before: 518102 East, 2nd floor, building 37, chentian Industrial Zone, Baotian 1st Road, Xixiang street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN VICTOOTH TERAHERTZ TECHNOLOGY Co.,Ltd. Patentee before: Shenzhen Terahertz Technology Innovation Research Institute |