CN204989507U - Human safety inspection scanning mechanism of rotary barrel shi taihezi - Google Patents
Human safety inspection scanning mechanism of rotary barrel shi taihezi Download PDFInfo
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- CN204989507U CN204989507U CN201520463457.6U CN201520463457U CN204989507U CN 204989507 U CN204989507 U CN 204989507U CN 201520463457 U CN201520463457 U CN 201520463457U CN 204989507 U CN204989507 U CN 204989507U
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Abstract
The utility model discloses a human safety inspection scanning mechanism of rotary barrel shi taihezi, it includes the frame, goes up concave mirror and lower concave mirror, go up the concave mirror with the focus position of concave mirror is equipped with the terahertz detection ware respectively down, it changes mirror and drive to be equipped with the reflection of cylinder multiaspect in the frame mirror rotatory rotary driving mechanism and drive are changeed in the reflection of drum -type multiaspect the horizontal swinging driving device of the horizontal wobbling of mirror is changeed in the reflection of drum -type multiaspect, go up the concave mirror with the concave mirror lies in respectively down the reflection of drum -type multiaspect is changeed the preceding oblique top and the preceding oblique below of mirror and is all moved towards the mirror is changeed in the reflection of drum -type multiaspect. The utility model discloses a this kind of human safety inspection scanning mechanism of rotary barrel shi taihezi has the scanning speed height, reduces vibration and noise, advantages such as mechanical structure is simple, low in manufacturing cost.
Description
Technical field
The utility model belongs to Terahertz applied technical field, particularly relates to a kind of Terahertz human body safety check scanning mechanism.
Background technology
Terahertz is the electromagnetic wave of frequency at 0.1THz-10THz, and wave band is between infrared and millimeter wave, is in important position in electromagnetic wave spectrum.From physics, THz wave is in the zone of transition of electronics to photonics; From frequency domain, the characteristic frequency of plasma wave in the frequency coverage of THz wave semiconductor, the important frequencies scopes such as the frequency of the organic and rotation and vibration frequency of biomacromolecule, the cosmic space photon of about 50%; From application point, THz wave has bandwidth, energy is little, coherence is strong, measure signal to noise ratio (S/N ratio) high, is suitable for the various fields such as material characteristics sign, high-resolution imaging, medical diagnosis, safety check, information communication, radar detection, air and environment measuring.Therefore, THz wave has important application prospect in national economy and national security etc.
Terahertz has very strong penetrability, can penetrate clothing easily, and human body self can produce this electromagnetic wave and to external radiation, therefore, Terahertz human body safety check instrument is developed.Terahertz human body safety check instrument is the THz wave sent by passive reception human body, after treated conversion, forms the two-dimentional Terahertz " snapshot " of human body.When being concealed with article in thing that people wears the clothes, absorb and stopped the normal trace of THz wave, make to produce intensity contrast between the position at corresponding article place in " snapshot " and human body background, thus find out the existence of article, and show the shape of article and the position at its place on a display screen.
Terahertz human body safety check instrument is compared with conventional body's safety check means, has four characteristics:
(1) safer.Traditional safety check instrument generally adopts X ray initiatively emission detection, and Terahertz safety check instrument is then the electromagnetic wave that passive acceptance sends from human body self, and equipment itself does not exist any ionization or electromagnetic radiation, is perfectly safe to detected personnel.
(2) more reliable.Traditional safety check instrument is mainly used in metallics detection, and Terahertz safety check instrument not only can detect metallics, can also detect the nonmetallic substance that the person carries, as pottery, powder, liquid, colloid etc.
(3) more civilized.Equipment Inspection mode is contactless inspection, and tested personnel need not undress, and testing result does not show any physical trait details, and adequately protect tested personnel's individual privacy.
Fig. 1 shows physical construction and the scanning theory of existing a kind of Terahertz human body safety check instrument: comprise pendulum mirror 11, concave mirror 12, lead screw motor 14, screw mandrel 15, swing mirror bracket 16, luffing mechanism 17 etc.The THz wave that human body 10 sends, being reflexed to its oblique upper by the pendulum mirror 11 of the one side circle swung has on the concave mirror 12 of optically focused effect, then terahertz detector 13 (having 1-3) institute's perception of concave mirror 12 focal position is located at, form the capable pixel of 1-3, pendulum mirror 11 drives generation luffing by lead screw motor 14, completes the scanning of the top-down whole height of human body; Large number of rows pixel stacks up, and forms complete scan image.
In order to improve sweep velocity, this Terahertz human body safety check instrument physical construction has had a kind of pattern of upgrading, be mirrored by physical construction and be copied into identical two covers up and down, be responsible for separately above the waist and the scanning of the lower part of the body, then upper and lower scanning result is superimposed as a width complete image.Due to all doubling with number of optical devices of all parts, comprising motor and screw mandrel and driver is also all independently upper and lower two covers, therefore complicated in mechanical structure, with high costs.In addition, pendulum mirror adopts reciprocating swing form, feature there is acceleration-deceleration to zero, and then heterodromous process, acceleration of motion is large, if mechanism can not do enough light and handy, inertia is large, vibration is large, and speed also cannot improve, and pendulum scarnning mirror speed obviously strengthens the problems such as even motor overload warning once raising there will be leading screw noise.
Utility model content
The utility model provide a kind of sweep velocity high, reduce vibration and noise, physical construction is simple, the rotary drum-type Terahertz human body safety check Scan Architecture of low cost of manufacture, to overcome the deficiency that prior art exists.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of rotary drum-type Terahertz human body safety check scanning mechanism, it comprises frame, upper recess surface mirror and concave surface mirror, the focal position of described upper recess surface mirror and described concave surface mirror is respectively equipped with terahertz detector, it is characterized in that: the rotary drive mechanism that described frame is provided with drum-type multiaspect reflecting rotating mirror and drives described drum-type multiaspect reflecting rotating mirror to rotate and the horizontal hunting drive unit driving described drum-type multiaspect reflecting rotating mirror horizontal hunting, described upper recess surface mirror and described concave surface mirror lay respectively at the front oblique upper of described drum-type multiaspect reflecting rotating mirror and front oblique below and all towards described drum-type multiaspect reflecting rotating mirror.
Described frame top is provided with ceiling, and described upper recess surface mirror is fixed on described ceiling, has base station bottom described frame, and described concave surface mirror is fixed on described base station.
Described drum-type multiaspect reflecting rotating mirror is formed by mirror holder with around the plane mirror that the polylith be arranged on mirror holder side face is end to end.
In preferred implementation of the present utility model, described drum-type multiaspect reflecting rotating mirror is drum-type six reflecting rotating mirrors, the plane mirror that namely on mirror holder side face, installation six pieces is end to end.
In embodiment of the present utility model, described horizontal hunting drive unit is by cage horizontal pendulum moving frame, the swing electrical mechanisms driving cage horizontal pendulum moving frame to swing by toggle becomes, and described drum-type multiaspect reflecting rotating mirror is located in described cage horizontal pendulum moving frame.
In embodiment of the present utility model, the back shaft be located in mirror holder is fixed with in the middle part of described cage horizontal pendulum moving frame, described rotating driving device is be fixed on rotation motor back shaft being positioned at mirror holder inside, and described rotation motor drives described mirror holder to rotate centered by back shaft.
Described frame front is provided with upper and lower crossbeam, and the anterior upper and lower end of described cage horizontal pendulum moving frame is respectively provided with and is arranged on axle portion on upper and lower crossbeam to form the oscillation centre of cage horizontal pendulum moving frame.
Described rotation motor and described swing motor are all connected with angular transducer.Realize reconstructing scan image by the position coordinates of the pendulum angle and the anglec of rotation and image slices vegetarian refreshments of measuring drum-type multiaspect reflecting rotating mirror like this.Described angular transducer is scrambler.
In addition, described base station is positioned at described frame anterior position and is provided with platform.Platform specification by the standing place of security staff, thus can ensure that whole body is scanned by safety check instrument.
Adopt technique scheme, rotary drum-type Terahertz human body safety check scanning mechanism of the present utility model have sweep velocity high, reduce vibration and noise, the advantages such as physical construction is simple, low cost of manufacture.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail:
Fig. 1 is the structural representation of prior art;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the structural representation of drum-type multiaspect reflecting rotating mirror, and its inside is provided with rotating driving device;
Fig. 4 is the structural representation of horizontal hunting drive unit.
Embodiment
As shown in Figures 2 and 3, rotary drum-type Terahertz human body safety check scanning mechanism of the present utility model, is made up of frame 100, drum-type multiaspect reflecting rotating mirror 200, upper recess surface mirror 301, concave surface mirror 302, terahertz detector 303, rotary drive mechanism 400, horizontal hunting drive unit 500.
Wherein, frame 100 by four discrete growth rectangular frames column 101, be located at top ceiling 102 and be located at bottom base station 103 form.
In the present embodiment, drum-type multiaspect reflecting rotating mirror 200 is drum-type six reflecting rotating mirrors, level is arranged on the middle part of frame 100, forms by hexahedral mirror holder 201 with around being arranged on six pieces of end to end plane mirrors 202 in mirror holder 201 circumference six planes.Rotary drive mechanism 400 is positioned at mirror holder 201.
Shown in Fig. 2 composition graphs 4, horizontal hunting drive unit 500 is made up of swing motor 501, cage horizontal pendulum moving frame 502, toggle 503.Toggle 503 is made up of rotating disk 531 and connecting rod 532.
Back up pad 511 is fixed with between two root posts at frame 100 rear portion, back up pad 511 is fixed with backing plate 512, be connected with the end plate 513 vertical with backing plate 512 in the lower end of backing plate 512, swing motor 501 is fixed on below end plate 513, and its output shaft is upward through end plate 513.The top of backing plate 512 is fixed with clutch shaft bearing seat 514, the first rotating shaft is provided with in this bearing seat 514, the upper end of the first rotating shaft is connected to the center of rotating disk 531, and lower end connects the output shaft of swing motor 501 by shaft coupling, and swing motor 501 is also provided with the first scrambler 517.One end hinge of connecting rod 532 is at the off-centered card edge of rotating disk 531.
Again as shown in Figure 2, cage horizontal pendulum moving frame 502 entirety is diamond structure, has the end frame 521 of upper and lower rhombus, is connected to many support bars 522 between upper and lower end frame 521 and middle part connects many support bars 522 and the fixed frame of front opening forms 523.
Respectively up and down between two root posts of frame 100 front portion fix a crossbeam 520.The front end of the upper and lower end frame of cage horizontal pendulum moving frame 502 respectively has axle portion 524, be hubbed on the center on upper and lower crossbeam respectively and form the oscillation centre of cage horizontal pendulum moving frame 502, the other end hinge of connecting rod 532 is in the side margins of lower end frame 521.
Again as shown in Figure 3, be fixed with the back shaft 203 of horizontally set between in the middle part of the supported on both sides bar 522 of cage horizontal pendulum moving frame 502 by fixture block 5221, the mirror holder 201 of drum-type six reflecting rotating mirrors is arranged on back shaft 203, can roll around back shaft 203.
Rotary drive mechanism 400 is arranged on the inside of mirror holder 201, rolls around back shaft 203 for driving mirror holder 201.Rotary drive mechanism 400 comprises base 401, the rotating shaft of rotation motor 402, second bearing seat 403, second, the second scrambler 406, driving gear 407 and follower gear 408.Wherein, rotation motor 402 and the second bearing seat 403 are fixed in base 401, second rotating shaft 404 is arranged in the second bearing seat 403, its one end is connected with the output shaft of rotation with motor 402 front end by shaft coupling, the other end installs driving gear 407, and follower gear 408 is fixed on one of them end face inside of mirror holder 201 and engages with driving gear 407.Second scrambler 406 is arranged on the output shaft of rotation motor 402 rear end.Like this, by the driving of rotation with stepper motor 402, drum-type six reflecting rotating mirrors can be made to roll around back shaft 203.
Again shown in Fig. 2, upper recess surface mirror 301 to be fixed on ceiling 102 and to be positioned at the front oblique upper of drum-type six reflecting rotating mirrors, and concave surface mirror 302 to be fixed on base station 103 and to be positioned at the front oblique below of drum-type six reflecting rotating mirrors.Terahertz detector 303 has two, and one of them terahertz detector to be fixed on ceiling 102 and to be positioned at the focal position of upper recess surface mirror 301, and another terahertz detector to be fixed on base station 103 and to be positioned at the focal position of concave surface mirror 302.
Above-mentioned swing motor 501 and rotation motor 402 preferably adopt stepper motor.The anterior position that base station 103 is positioned at frame 100 is also provided with the platform 104 of standing for tested personnel.
Be exactly more than rotary drum-type Terahertz human body safety check scanning mechanism of the present utility model, it has following feature compared with existing Terahertz human body safety check scanning mechanism:
The scanning of upper half of human body and the lower part of the body is solved with drum-type six reflecting rotating mirrors of middle traverse, instead of the upper lower part of the body scanning of human body was responsible for by picture with the duplicate light path system of upper and lower two cover in the past, the feature of width is greater than according to human height's size, and the feature that drum-type six reflecting rotating mirror rolling rotational scan range are large, original single mirror left and right reciprocally swinging scanning many minute surfaces become around its axle center rotation are scanned up and down, like this, many mirrors are become from single mirror, to-and-fro movement becomes continuous rotary motion, thus reach efficiency and significantly improve with smooth running without impact, be easy to the object raised speed, and noise is low.
The circumferential each face of hexahedral mirror holder 201 is provided with plane mirror, and by rotation, with motor head roll formula six reflecting rotating mirrors, around axle center, rolling rotates.The effect of the concave surface mirror of drum-type six reflecting rotating mirror front oblique upper upper recess surface mirrors and position, front lower place is the human body THz wave receiving each mirror-reflection, focus on the terahertz detector at respective concave mirror focus place respectively, upper recess surface mirror and concave surface mirror are responsible for above the waist and the light of the lower part of the body separately, form the scanning of a row human body full-height.Drum-type six reflecting rotating mirrors, from left swing to the right side, just complete the scanning of human body Width, and next time, scanning then put a left side again from the right side, completed the scanning of lower next human body Width; The swing of drum-type six reflecting rotating mirrors is reached with motor driving crank linkage assembly by swinging; Higher than the efficiency of the straight reciprocating motion of screw mandrel, speed is fast, and structure is simple, and cost is low.
Therefore, as can be seen from foregoing detailed description, rotary drum-type Terahertz human body safety check scanning mechanism of the present utility model have sweep velocity high, reduce vibration and noise, the advantages such as physical construction is simple, low cost of manufacture.
Claims (9)
1. a rotary drum-type Terahertz human body safety check scanning mechanism, it comprises frame, upper recess surface mirror and concave surface mirror, the focal position of described upper recess surface mirror and described concave surface mirror is respectively equipped with terahertz detector, it is characterized in that: the rotary drive mechanism that described frame is provided with drum-type multiaspect reflecting rotating mirror and drives described drum-type multiaspect reflecting rotating mirror to rotate and the horizontal hunting drive unit driving described drum-type multiaspect reflecting rotating mirror horizontal hunting, described upper recess surface mirror and described concave surface mirror lay respectively at the front oblique upper of described drum-type multiaspect reflecting rotating mirror and front oblique below and are all provided with ceiling towards frame top described in described drum-type multiaspect reflecting rotating mirror, described upper recess surface mirror is fixed on described ceiling, bottom described frame, there is base station, described concave surface mirror is fixed on described base station.
2. rotary drum-type Terahertz human body safety check scanning mechanism according to claim 1, is characterized in that: described drum-type multiaspect reflecting rotating mirror is formed by mirror holder with around the plane mirror that the polylith be arranged on mirror holder side face is end to end.
3. rotary drum-type Terahertz human body safety check scanning mechanism according to claim 2, is characterized in that: described drum-type multiaspect reflecting rotating mirror is drum-type six reflecting rotating mirrors.
4. rotary drum-type Terahertz human body safety check scanning mechanism according to claim 2, it is characterized in that: described horizontal hunting drive unit is by cage horizontal pendulum moving frame, the swing electrical mechanisms driving cage horizontal pendulum moving frame to swing by toggle becomes, and described drum-type multiaspect reflecting rotating mirror is located in described cage horizontal pendulum moving frame.
5. rotary drum-type Terahertz human body safety check scanning mechanism according to claim 4, it is characterized in that: in the middle part of described cage horizontal pendulum moving frame, be fixed with the back shaft be located in mirror holder, described rotating driving device is be fixed on rotation motor back shaft being positioned at mirror holder inside, and described rotation motor drives mirror holder to rotate centered by back shaft.
6. rotary drum-type Terahertz human body safety check scanning mechanism according to claim 5, it is characterized in that: described frame front is provided with upper and lower crossbeam, the anterior upper and lower end of described cage horizontal pendulum moving frame is respectively provided with and is arranged on axle portion on upper and lower crossbeam to form the oscillation centre of cage horizontal pendulum moving frame.
7. rotary drum-type Terahertz human body safety check scanning mechanism according to claim 5, is characterized in that: described rotation motor and described swing motor are all connected with angular transducer.
8. rotary drum-type Terahertz human body safety check scanning mechanism according to claim 7, is characterized in that: described angular transducer is scrambler.
9. rotary drum-type Terahertz human body safety check scanning mechanism according to claim 1, is characterized in that: described base station is positioned at described frame anterior position and is provided with platform.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520463457.6U CN204989507U (en) | 2015-07-01 | 2015-07-01 | Human safety inspection scanning mechanism of rotary barrel shi taihezi |
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| CN201520463457.6U CN204989507U (en) | 2015-07-01 | 2015-07-01 | Human safety inspection scanning mechanism of rotary barrel shi taihezi |
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| CN204989507U true CN204989507U (en) | 2016-01-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914476A (en) * | 2015-07-01 | 2015-09-16 | 博康智能网络科技股份有限公司 | Rotary barrel type terahertz human body safety check scanning mechanism |
| CN109870740A (en) * | 2018-12-29 | 2019-06-11 | 清华大学 | Millimeter wave/THz wave imaging device and its reflecting plate regulating device |
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2015
- 2015-07-01 CN CN201520463457.6U patent/CN204989507U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914476A (en) * | 2015-07-01 | 2015-09-16 | 博康智能网络科技股份有限公司 | Rotary barrel type terahertz human body safety check scanning mechanism |
| CN109870740A (en) * | 2018-12-29 | 2019-06-11 | 清华大学 | Millimeter wave/THz wave imaging device and its reflecting plate regulating device |
| CN109870740B (en) * | 2018-12-29 | 2024-03-01 | 清华大学 | Millimeter wave/terahertz wave imaging device and reflecting plate adjusting device thereof |
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Address after: 201209 Chuansha Road, Shanghai, No. 221, room 11, building 955 Patentee after: Bocom Intelligent Network Technology Co. Ltd. Address before: 201209 Chuansha Road, Shanghai, No. 221, room 11, building 955 Patentee before: BOCOM Smart Network Technologies Inc. |