CN218938526U - Active terahertz human body security inspection bidirectional scanning device - Google Patents
Active terahertz human body security inspection bidirectional scanning device Download PDFInfo
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- CN218938526U CN218938526U CN202222045190.1U CN202222045190U CN218938526U CN 218938526 U CN218938526 U CN 218938526U CN 202222045190 U CN202222045190 U CN 202222045190U CN 218938526 U CN218938526 U CN 218938526U
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Abstract
The utility model provides an active terahertz human body security inspection bidirectional scanning device which comprises a detection mechanism and a correlation channel mechanism, wherein the detection mechanism is used for detecting the correlation channel mechanism; the detection mechanism comprises a back side detection unit for detecting the back side of the human body and a front side detection unit for detecting the front side of the human body; the correlation channel mechanism is positioned between the back side detection unit and the front side detection unit; the correlation channel mechanism comprises a channel pedal for providing bottom support, a first half Gao Dangban and a second half high baffle which are consistent in structure and symmetrically arranged at two sides of the central position of the channel pedal; the first half Gao Dangban, the second half height baffle and the channel pedal divide the correlation area between the back side detection unit and the front side detection unit into two-in and two-out channels. According to the utility model, the front and back sides of the body of the person to be detected are synchronously scanned and imaged by adopting two sets of active terahertz detection modules, the person to be detected does not need to coordinate with the adjustment of the body posture, the non-inductive security inspection is realized, and the detection speed is high.
Description
Technical Field
The utility model belongs to the technical field of security inspection equipment, and particularly relates to a security inspection device which adopts active terahertz detection equipment and can scan the directions of the front side and the rear side of a human body simultaneously.
Background
Electromagnetic waves with terahertz frequencies ranging from 0.1 to 10THz, which have frequencies between microwave and infrared rays, are applied in the fields including: industrial nondestructive testing, materials, medical diagnostics, atmospheric and environmental monitoring, communications, and the like. Since terahertz waves can penetrate most of nonpolar substances such as: leather, fabric and paper, so that the hidden objects of the human body can be detected without close examination in the detection of the hidden objects of the human body, and the application of the hidden objects of the human body is wide.
The terahertz human body security inspection equipment on the market is mostly passive, namely the equipment only passively collects terahertz waves emitted by a human body to image. The terahertz waves emitted by the human body are very weak, and the actual imaging effect is greatly reduced due to the interference of factors such as clothes, surrounding temperature and humidity environments, space distances and the like of the human body, so that hidden contraband objects of the human body cannot be effectively distinguished.
In the prior art, an active terahertz security inspection instrument usually adopts a point type transmitter and a point type receiver, only one point of a target plane can be measured each time, two-dimensional mechanical scanning is required to be carried out for obtaining an image, only one direction of a human body can be scanned, and the terahertz security inspection instrument has a complex structure and long imaging time.
Disclosure of Invention
According to the technical problems, the utility model provides an active terahertz human body security inspection bidirectional scanning device, which specifically comprises the following components:
the active terahertz human body security inspection bidirectional scanning device comprises a detection mechanism and an correlation channel mechanism; the detection mechanism comprises a back side detection unit for detecting the back side of the human body and a front side detection unit for detecting the front side of the human body; the correlation channel mechanism is positioned between the back side detection unit and the front side detection unit; the correlation channel mechanism comprises a channel pedal for providing bottom support, a first half Gao Dangban and a second half high baffle which are consistent in structure and symmetrically arranged at two sides of the central position of the channel pedal; the first half Gao Dangban, the second half height baffle and the channel pedal divide the correlation area between the back side detection unit and the front side detection unit into two-in and two-out channels.
The first half Gao Dangban and the second half baffle are respectively provided with an infrared blocking sensor at two positions which are 35cm and 90cm away from the ground.
The back side detection unit comprises a back side frame and a back side terahertz detection module; the back terahertz detection module is arranged in the back frame in a sliding manner and can be driven by the mechanical transmission mechanism to perform lifting movement along the first guide rail slide block group;
the front detection unit comprises a front frame and a front terahertz detection module; the front terahertz detection module is arranged in the front side frame in a sliding manner and can be driven by the mechanical transmission mechanism to perform lifting motion along the second guide rail sliding block set.
The back side detection unit further comprises a guiding interaction display screen, and the guiding interaction display screen is fixed on one side of the back side frame, which is away from the correlation channel mechanism.
The front side detection unit further comprises a detection interaction display screen, a thermal imaging temperature measurement probe and a face recognition probe, wherein the detection interaction display screen is fixed on one side of the front side frame, which is away from the correlation channel mechanism; the thermal imaging temperature measurement probe and the face recognition probe are respectively fixed at the top of the front side frame and face towards the detected personnel in the correlation channel mechanism.
The back-side terahertz detection module and the front-side terahertz detection module adopt the same active terahertz detector, and the front side of the terahertz detection module is packaged by nonmetallic material polytetrafluoroethylene or high-density polyethylene.
The mechanical transmission mechanism comprises a group of power transmission groups and two groups of synchronous transmission groups, the power transmission groups are arranged on the back side frame, and the power transmission groups are connected and drive the back side terahertz detection module; the two synchronous conduction groups are symmetrically arranged on two sides of the back side frame and the front side frame and are fixedly connected with the back side terahertz detection module and the front side terahertz detection module respectively.
The power transmission group comprises a synchronous motor, a driving synchronous pulley, a driven synchronous pulley, a toothed synchronous belt and a synchronous belt traction plate, wherein the synchronous motor is fixed at the top of the back side frame, the output shaft of the synchronous motor is coaxially and fixedly connected with the driving synchronous pulley, the driving synchronous pulley and the driven synchronous pulley are connected through the toothed synchronous belt, the driven synchronous pulley is rotationally connected to one side of the bottom of the back side frame and is positioned under the driving synchronous pulley, and the synchronous belt traction plate is fixedly connected with the back side terahertz detection module and the toothed synchronous belt respectively;
each group of synchronous transmission groups comprises a first guide wheel rotationally connected to the upper part of the back side frame, a second guide wheel and a third guide wheel rotationally connected to the lower part of the back side frame respectively, wherein the second guide wheel is positioned right below the first guide wheel, and the lower end of the wheel edge of the third guide wheel is higher than the lower end of the wheel edge of the second guide wheel; the device further comprises a fourth guide wheel rotatably connected to the upper part of the front side frame, a fifth guide wheel and a sixth guide wheel rotatably connected to the lower part of the front side frame respectively, wherein the fifth guide wheel is positioned right below the fourth guide wheel, and the lower end position of the wheel edge of the sixth guide wheel is higher than the lower end of the wheel edge of the fifth guide wheel; the third guide wheel and the sixth guide wheel are positioned between the second guide wheel and the fifth guide wheel; wheel axle centers of the first guide wheel, the second guide wheel, the third guide wheel, the fourth guide wheel, the fifth guide wheel and the sixth guide wheel are respectively parallel; a synchronizing shaft is coaxially and fixedly connected between the two first guide wheels of the two synchronous transmission groups; the closed-loop steel wire rope sequentially winds the first guide wheel, the third guide wheel, the sixth guide wheel, the fourth guide wheel, the fifth guide wheel and the second guide wheel and finally returns to the first guide wheel;
the wire rope is fixedly connected with the first wire traction seat and the second wire traction seat respectively, the first wire traction seat is fixedly connected to the side wall of the back-side terahertz detection module, and the second wire traction seat is fixedly connected to the side wall of the front-side terahertz detection module.
A synchronizing shaft is coaxially and fixedly connected between the two fourth guide wheels of the two synchronous transmission groups.
The first steel wire traction seat and the synchronous belt traction plate are positioned on the same side wall of the back-side terahertz detection module.
Also includes a signal processing master control mechanism 30; the signal processing main control mechanism is arranged in the detection mechanism and controls the whole detection system to operate, under the control of the signal processing main control mechanism, the correlation channel mechanism collects signals of detected personnel, the detection mechanism executes a preset security inspection process, the terahertz core detection module is positioned in the detection mechanism and executes reciprocating movement, under the control of the signal processing main control mechanism, single scanning is executed on the detected personnel entering the correlation channel mechanism, and face recognition and body temperature information collection are carried out on the detected personnel through the correlation channel mechanism.
The beneficial effects of the utility model are as follows: according to the utility model, two sets of active terahertz detection modules are adopted to synchronously scan and image the front and back sides of the body of the person to be detected, the person to be detected does not need to coordinate with the adjustment of the body posture, and the noninductive security inspection is realized; the layout of the two-in and two-out channels is matched with the infrared blocking sensor, so that the space is fully utilized and the detection efficiency is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 is a schematic side view of a structural layout of the present utility model;
FIG. 2 is a schematic top view of a correlation channel mechanism layout;
FIG. 3 is a security flow chart for performing security inspection using the present utility model;
FIG. 4 is a schematic view of an embodiment of a mechanical transmission structure;
fig. 5 is an enlarged partial schematic view of fig. 4.
As shown in the figure, a detection mechanism 10, a correlation channel mechanism 20, a signal processing main control mechanism 30,
A back side detecting unit 110, a front side detecting unit 120,
A back terahertz detection module 111, a guiding interaction display screen 113, a back frame 114,
Front terahertz detection module 121, detection interactive display screen 123, front frame 124, face recognition probe 125, thermal imaging temperature measurement probe 126,
A synchronous motor 410, a driving synchronous pulley 411, a driven synchronous pulley 412, a toothed synchronous belt 413, a synchronous belt traction plate 414,
A first guide wheel 421, a second guide wheel 422, a third guide wheel 423, a fourth guide wheel 424, a fifth guide wheel 425, a sixth guide wheel 426, a synchronizing shaft 427, a steel wire rope 428,
A first wire fifth wheel 4291 and a second wire fifth wheel 4292.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
The active terahertz human body security inspection bidirectional scanning device comprises a detection mechanism 10, an correlation channel mechanism 20 and a signal processing main control mechanism 30; the signal processing main control mechanism is arranged in the detection mechanism and controls the whole detection system to operate, under the control of the signal processing main control mechanism, the correlation channel mechanism collects signals of detected personnel, the detection mechanism executes a preset security inspection process, the terahertz core detection module is positioned in the detection mechanism and executes reciprocating movement, under the control of the signal processing main control mechanism, single scanning is executed on the detected personnel entering the correlation channel mechanism, and face recognition and body temperature information collection are carried out on the detected personnel through the correlation channel mechanism.
Fig. 1 presents a schematic side view of an embodiment of the structural layout of the utility model, as shown,
the detection mechanism 10 includes a back side detection unit 110 for detecting a back side of a human body and a front side detection unit 120 for detecting a front side of the human body; the correlation channel mechanism 20 is located between the back side detection unit 110 and the front side detection unit 120.
The back side detection unit 110 includes a back side frame 114, a back side terahertz detection module 111, and a guide interaction display screen 113; the back terahertz detection module 111 is responsible for detecting the back side of the human body of the person to be detected positioned in the correlation channel mechanism 20, is slidably arranged in the back side frame 114 through the first guide rail slide block set 112, and can perform lifting movement along the first guide rail slide block set 112 under the drive of the mechanical transmission mechanism; a guide interactive display screen 113 is fixed to the back side frame 114 on the side facing away from the correlation channel mechanism 20.
The front detection unit 120 comprises a front frame 124, a front terahertz detection module 121, a detection interaction display screen 123, a thermal imaging temperature measurement probe 126 and a face recognition probe 125; the front terahertz detection module 121 is responsible for detecting the front side of the human body of the detected person in the correlation channel mechanism 20, is slidably arranged in the front side frame 124 through the second guide rail slide block set 122, and can perform lifting movement along the second guide rail slide block set 122 under the drive of the mechanical transmission mechanism; the detection interaction display screen 123 is fixed on the side of the front side frame 124 facing away from the correlation channel mechanism 20; the thermal imaging temperature probe 126 and the face recognition probe 125 are respectively fixed on the top of the front side frame 124 and face the person to be examined in the correlation channel mechanism 20.
The back-side terahertz detection module 111 and the front-side terahertz detection module 121 can adopt the same active terahertz detector, and the front side can adopt nonmetallic material polytetrafluoroethylene or high-density polyethylene for encapsulation.
To avoid mutual interference, the lifting actions of the back side terahertz detection module 111 and the front side terahertz detection module 121 are performed synchronously but in opposite directions, that is, the front side terahertz detection module 121 is descending while the back side terahertz detection module 111 is ascending; the back-side terahertz detection module 111 is lowered while the front-side terahertz detection module 121 is raised. Of course, the transmitting frequencies of the two are the same or different, and are transmitted and received simultaneously or at intervals, which belongs to the problem of software setting, and can be known and selected by a person skilled in the art according to the prior art, and are not described herein.
The vertical effective scanning distance between the back terahertz detection module 111 and the front terahertz detection module 121 is required to be from the ankle of the person to be detected to the neck of the human body, and the reference scanning range is 15cm-180cm away from the ground; the moving speed in the vertical direction is more than or equal to 0.8m/s, and the speed can be adjusted between 0.1m/s and 1 m/s.
The guide interaction display screen 113 and the detection interaction display screen 123 may each employ a 14-inch liquid crystal screen. The guiding interaction display screen 113 is used for giving passenger flow trend guiding information and guiding the checked personnel to enter the correlation channel mechanism 20 orderly; the detection interaction display screen 123 is used for outputting a detection screen.
The back side frame 114 and the front side frame 124 are supported by galvanized sheet bends, the body frame is formed by welding, and the plastic parts are machined, joined, etc. to allow for a rapid prototyping process. The maintenance window on the frame is arranged on the side surfaces of the back terahertz detection module 111 and the front terahertz detection module 121, is installed in a cover plate mode, and is provided with a heat dissipation hole at the upper part of the cover plate. I P65 protection classes were used.
The correlation channel mechanism 20 is disposed in a correlation region formed between the back side detection unit 110 and the front side detection unit 120. The correlation channel mechanism 20 comprises a channel pedal 210, a first half-height baffle 221 and a second half-height baffle 222; the channel pedal 210 provides a reliable bottom support for the correlation channel mechanism 20, is a main body part of the correlation channel mechanism 20, has a length of 120cm and a width of 50cm, adopts a raised carbon pattern steel plate, has a plate thickness of 4mm, and has a raised height of 5cm, and the interior of the raised height is hollow for placing a communication cable for connecting the back-side terahertz detection module 111 and the front-side terahertz detection module 121; the first half height baffle 221 and the second half height baffle 222 have the same structure, are symmetrically arranged on two sides of the center of the channel pedal 210, and are fixedly connected with the channel pedal 210. The first half-height baffle 221 and the second half-height baffle 222 are respectively provided with an infrared blocking sensor 223 at two positions 35cm and 90cm away from the ground, and are used for collecting passing information of the detected personnel, transmitting the passing information to the signal processing main control mechanism 30, and controlling the detection mechanism 10 to complete one-dimensional single scanning of the detected personnel in the vertical direction within 2 s.
The first half-height baffle 221, the second half-height baffle 222 and the channel pedal 210 divide the correlation zone between the back side detection unit 110 and the front side detection unit 120 into two-in and two-out channels, as shown in fig. 2, X1 and X2 are inlets, X3 and X4 are outlets, X point is a stay detection point of the person under test, and is located at the center of the channel pedal 210.
The signal processing main control mechanism 30 is mounted on a front side frame 124 of the front side detection unit, and is electrically connected with the back side terahertz detection module 111, the front side terahertz detection module 121, the guiding interaction display screen 113, the detection interaction display screen 123, the thermal imaging temperature measurement probe 126, the face recognition probe 125, the mechanical transmission mechanism and the infrared interrupt sensor 223, respectively.
The signal processing main control mechanism controls the device to execute security check scanning according to the detection flow shown in fig. 3. The device can be additionally provided with functional structures such as one-key scram, one-key reset, manual single scanning, scanning speed adjustment, action protection period adjustment and the like on the basis of the structure, and detailed description is omitted.
The utility model also provides an embodiment of a mechanical transmission mechanism for controlling the back-side terahertz detection module 111 and the front-side terahertz detection module 121 to synchronously lift and fall along opposite directions, as shown in fig. 4 and 5, the mechanical transmission mechanism comprises a group of power transmission groups and two synchronous transmission groups, the power transmission groups only need one group and only need to be arranged on the back-side frame 114, and the power transmission groups are directly connected and drive the back-side terahertz detection module 111; the two synchronous conduction sets have the same structure, are symmetrically arranged on two sides of the back side frame 114 and the front side frame 124, and are respectively fixedly connected with the back side terahertz detection module 111 and the front side terahertz detection module 121, so that the back side terahertz detection module 111 and the front side terahertz detection module 121 are driven to synchronously move in opposite directions.
Specifically, the power transmission group includes a synchronous motor 410, a driving synchronous pulley 411, a driven synchronous pulley 412, a toothed synchronous belt 413 and a synchronous belt traction plate 414, the synchronous motor 410 is fixed at the top of the back side frame 114, an output shaft of the synchronous motor 410 is coaxially and fixedly connected with the driving synchronous pulley 411, the driving synchronous pulley 411 is connected with the driven synchronous pulley 412 through the toothed synchronous belt 413, the driven synchronous pulley 412 is rotatably connected at one side of the bottom of the back side frame 114 and is located under the driving synchronous pulley 411, and the synchronous belt traction plate 414 is fixedly connected with the back side terahertz detection module 111 and the toothed synchronous belt 413 respectively. Thereby driving the back terahertz detection module 111 to perform lifting movement through the transmission of the toothed synchronous belt under the driving of the synchronous motor 410.
The two synchronous conduction sets have the same structure, taking one synchronous conduction set as an example, as shown in the figure, the synchronous conduction set comprises a first guide wheel 421 rotatably connected to the upper part of the back side frame 114, a second guide wheel 422 and a third guide wheel 423 rotatably connected to the lower part of the back side frame 114 respectively, the second guide wheel 422 is positioned under the first guide wheel 421, and the lower end of the wheel edge of the third guide wheel 423 is higher than the lower end of the wheel edge of the second guide wheel 422; the device further comprises a fourth guide wheel 424 rotatably connected to the upper part of the front side frame 124, a fifth guide wheel 425 and a sixth guide wheel 426 rotatably connected to the lower part of the front side frame 124 respectively, wherein the fifth guide wheel 425 is positioned right below the fourth guide wheel 424, and the lower end of the wheel edge of the sixth guide wheel 426 is higher than the lower end of the wheel edge of the fifth guide wheel;
and third and sixth guide pulleys 423 and 426 are both positioned between second and fifth guide pulleys 422 and 425;
wheel axes of the first guide wheel 421, the second guide wheel 422, the third guide wheel 423, the fourth guide wheel 424, the fifth guide wheel 425 and the sixth guide wheel 426 are respectively parallel; a synchronizing shaft 427 is coaxially and fixedly connected between the two first guide wheels 421 of the two synchronous transmission groups so as to realize power transmission and ensure synchronous rotation, and ensure that the stress on the two sides of the terahertz detection module on the back side and the front side is balanced and the lifting movement is stable; preferably, a synchronizing shaft is coaxially and fixedly connected between the two fourth guide wheels 424 of the two synchronous conduction sets.
The closed loop wire rope 428 is wound around the first guide wheel 421, the third guide wheel 423, the sixth guide wheel 426, the fourth guide wheel 424, the fifth guide wheel 425, the second guide wheel 422 in sequence, and finally returns to the first guide wheel 421.
The wire rope 428 is further fixedly connected with a first wire traction seat 4291 and a second wire traction seat 4292 respectively, the first wire traction seat 4291 is fixedly connected to the side wall of the back-side terahertz detection module 111, and the second wire traction seat 4292 is fixedly connected to the side wall of the front-side terahertz detection module 121; preferably, the first wire pulling shoe 4291 is located on the same side of the back terahertz detection module 111 as the timing belt pulling plate 414.
When the utility model is used, a person to be detected enters the utility model from X1 and X2, then the person to be detected stays at the X point, the first half-height baffle 221 and the second half-height baffle 222 are respectively provided with an infrared shielding sensor 223 at two positions 35cm and 90cm away from the ground during detection, the infrared shielding sensors are used for collecting passing information of the person to be detected and transmitting the passing information to the signal processing main control mechanism 30, the detection mechanism 10 is controlled to complete one-dimensional single scanning in the vertical direction of the person to be detected within 2 seconds, under the control of the signal processing main control mechanism, the utility model collects passing signals of the person to be detected by the correlation channel mechanism, the detection mechanism executes a preset security inspection process, the terahertz core detection module is positioned in the detection mechanism to execute reciprocating movement, and under the control of the signal processing main control mechanism, the person to be detected enters the correlation channel mechanism to execute single scanning, and face recognition and body temperature information are collected by the correlation channel mechanism.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. The active terahertz human body security inspection bidirectional scanning device is characterized by comprising a detection mechanism and an correlation channel mechanism; the correlation channel mechanism is arranged at the inner side of the detection mechanism;
the detection mechanism comprises a back side detection unit for detecting the back side of the human body and a front side detection unit for detecting the front side of the human body; the correlation channel mechanism is positioned between the back side detection unit and the front side detection unit;
the correlation channel mechanism comprises a channel pedal for providing bottom support, a first half-height baffle plate and a second half-height baffle plate, wherein the first half-height baffle plate and the second half-height baffle plate are structurally consistent and symmetrically arranged on two sides of the central position of the channel pedal; the first half Gao Dangban, the second half height baffle and the channel pedal divide the correlation area between the back side detection unit and the front side detection unit into two-in and two-out channels.
2. The active terahertz human body security inspection bidirectional scanning device as set forth in claim 1, wherein two positions of the first half-height baffle plate 35cm and 90cm away from the ground are respectively provided with an infrared blocking sensor;
two positions of the second half-height baffle plate, which are 35cm and 90cm away from the ground, are respectively provided with an infrared blocking sensor.
3. The active terahertz human body security inspection bidirectional scanning device of claim 1, wherein the back side detection unit comprises a back side frame and a back side terahertz detection module; the back side terahertz detection module is arranged in the back side frame in a sliding way through the first guide rail sliding block set, and is connected with the mechanical transmission mechanism, and is driven by the mechanical transmission mechanism to perform lifting movement;
the front detection unit comprises a front frame and a front terahertz detection module; the front terahertz detection module is arranged in the front side frame in a sliding manner through the second guide rail sliding block set, and is driven by the mechanical transmission mechanism to perform lifting motion along the second guide rail sliding block set.
4. The active terahertz human body security inspection bidirectional scanning device of claim 3, wherein the back side detection unit further comprises a guide interaction display screen, and the guide interaction display screen is fixed on one side of the back side frame facing away from the correlation channel mechanism.
5. The active terahertz human body security inspection bidirectional scanning device as recited in claim 3, wherein the front side detection unit further comprises a detection interaction display screen, a thermal imaging temperature measurement probe and a face recognition probe, and the detection interaction display screen is fixed on one side of the front side frame away from the correlation channel mechanism; the thermal imaging temperature measurement probe and the face recognition probe are respectively fixed at the top of the front side frame and face towards the detected personnel in the correlation channel mechanism.
6. The active terahertz human body security inspection bidirectional scanning device as claimed in claim 3, wherein the back terahertz detection module and the front terahertz detection module adopt the same active terahertz detector, and the front surface adopts a nonmetallic material polytetrafluoroethylene or high-density polyethylene package.
7. The active terahertz human body security inspection bidirectional scanning device as set forth in claim 3, wherein the mechanical transmission mechanism includes a group of power transmission groups and two groups of synchronous transmission groups, the power transmission groups are mounted on the back side frame, and the power transmission groups are connected and drive the back side terahertz detection module; the two synchronous conduction groups are symmetrically arranged on two sides of the back side frame and the front side frame and are fixedly connected with the back side terahertz detection module and the front side terahertz detection module respectively.
8. The driving terahertz human body security inspection bidirectional scanning device as claimed in claim 7, wherein the power transmission unit comprises a synchronous motor, a driving synchronous pulley, a driven synchronous pulley, a toothed synchronous belt and a synchronous belt traction plate, the synchronous motor is fixed at the top of the back side frame, the output shaft of the synchronous motor is coaxially and fixedly connected with the driving synchronous pulley, the driving synchronous pulley is connected with the driven synchronous pulley through the toothed synchronous belt, the driven synchronous pulley is rotatably connected to one side of the bottom of the back side frame and is positioned under the driving synchronous pulley, and the synchronous belt traction plate is fixedly connected with the back side terahertz detection module and the toothed synchronous belt respectively;
each group of synchronous transmission groups comprises a first guide wheel rotationally connected to the upper part of the back side frame, a second guide wheel and a third guide wheel rotationally connected to the lower part of the back side frame respectively, wherein the second guide wheel is positioned right below the first guide wheel, and the lower end of the wheel edge of the third guide wheel is higher than the lower end of the wheel edge of the second guide wheel; the device further comprises a fourth guide wheel rotatably connected to the upper part of the front side frame, a fifth guide wheel and a sixth guide wheel rotatably connected to the lower part of the front side frame respectively, wherein the fifth guide wheel is positioned right below the fourth guide wheel, and the lower end position of the wheel edge of the sixth guide wheel is higher than the lower end of the wheel edge of the fifth guide wheel; the third guide wheel and the sixth guide wheel are positioned between the second guide wheel and the fifth guide wheel; wheel axle centers of the first guide wheel, the second guide wheel, the third guide wheel, the fourth guide wheel, the fifth guide wheel and the sixth guide wheel are respectively parallel; a synchronizing shaft is coaxially and fixedly connected between the two first guide wheels of the two synchronous transmission groups; the closed-loop steel wire rope sequentially winds the first guide wheel, the third guide wheel, the sixth guide wheel, the fourth guide wheel, the fifth guide wheel and the second guide wheel and finally returns to the first guide wheel;
the wire rope is fixedly connected with the first wire traction seat and the second wire traction seat respectively, the first wire traction seat is fixedly connected to the side wall of the back-side terahertz detection module, and the second wire traction seat is fixedly connected to the side wall of the front-side terahertz detection module.
9. The active terahertz human body security inspection bidirectional scanning device of claim 8, wherein a synchronizing shaft is also coaxially fixedly connected between two fourth guide wheels of the two synchronous conduction groups.
10. The active terahertz human body security inspection bidirectional scanning device of claim 8, wherein the first wire traction seat and the synchronous belt traction plate are located on the same side wall of the back-side terahertz detection module.
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| CN202222045190.1U CN218938526U (en) | 2022-08-04 | 2022-08-04 | Active terahertz human body security inspection bidirectional scanning device |
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| CN202222045190.1U CN218938526U (en) | 2022-08-04 | 2022-08-04 | Active terahertz human body security inspection bidirectional scanning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116908933A (en) * | 2023-09-06 | 2023-10-20 | 山东宏科水电设备有限公司 | Security inspection dangerous goods detection device based on terahertz imaging |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116908933A (en) * | 2023-09-06 | 2023-10-20 | 山东宏科水电设备有限公司 | Security inspection dangerous goods detection device based on terahertz imaging |
| CN116908933B (en) * | 2023-09-06 | 2023-11-24 | 山东宏科水电设备有限公司 | Security inspection dangerous goods detection device based on terahertz imaging |
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