CN211086662U - Terahertz wave and metal detection comprehensive imaging safety inspection equipment - Google Patents
Terahertz wave and metal detection comprehensive imaging safety inspection equipment Download PDFInfo
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- CN211086662U CN211086662U CN201922187866.9U CN201922187866U CN211086662U CN 211086662 U CN211086662 U CN 211086662U CN 201922187866 U CN201922187866 U CN 201922187866U CN 211086662 U CN211086662 U CN 211086662U
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Abstract
The utility model discloses a terahertz wave and metal detection synthesize formation of image safety inspection equipment now, including chassis, receiving and dispatching array support, rotatory scanning subassembly and control center subassembly, receiving and dispatching array support sets up on the chassis, receiving and dispatching array support with the chassis rotates to be connected, rotatory scanning subassembly sets up on the receiving and dispatching array support. The utility model discloses utilize terahertz wave to show shape and position that the person carried article to the penetrability of clothing, and utilize metal detection imaging technique to carry out categorised discernment to the metal object that the person carried to the discernment ability of metal object, carry out contrastive analysis discernment through with two kinds of images, mark and recognization process reach good detection and discernment ability again, solved the limited problem of the discernment ability to article in the current safety inspection check out test set, can be used to the safety inspection check out work in various public places such as airport, station and stadium.
Description
Technical Field
The utility model relates to an formation of image safety inspection technical field, concretely relates to terahertz wave and metal detection synthesize formation of image safety inspection equipment now.
Background
In recent years, international public safety events are continuously generated, great threat is brought to the life and property safety of people, great economic loss is brought to the whole society, and the trend of increasing year by year is presented. According to years of experience of countries in the world, the public security incident can be effectively prevented by carrying out security inspection on public occasions. The currently common security inspection equipment comprises an X-ray luggage security inspection instrument, a metal security inspection door, a handheld metal detector and the like. The X-ray baggage inspection instrument is very effective for inspecting dangerous materials in baggage, but cannot inspect a human body due to its ionizing radiation characteristic. The metal security inspection door and the handheld metal detector can effectively detect metal objects carried by a person, but cannot detect non-metal dangerous objects such as ceramic cutters and the like.
In view of the shortcomings of the existing safety inspection equipment, scientific research personnel in various countries are developing technologies capable of effectively detecting various dangerous articles carried by human bodies and having no harm to human bodies. Under the background, the terahertz imaging security inspection technology is produced at the same time. Terahertz waves are electromagnetic waves, have a frequency between microwave and infrared, have very good penetrability on clothes, and are absolutely safe to human bodies. The terahertz waves are used for imaging the human body, the positions and the shapes of various articles hidden in clothes can be effectively and visually seen from the terahertz images of the human body, great convenience is provided for security inspection, and the terahertz waves are applied to some occasions at present, so that a good effect is achieved.
With the continuous improvement of the requirements of various occasions on security inspection, the terahertz imaging technology also has some defects, wherein the most important point is the article identification capability. At present, the object is identified by the terahertz imaging technology mainly by the shape of the object in the image, and the identification accuracy is not too high. Although the terahertz spectrum technology can effectively identify substances, a terahertz radiation source used in the terahertz spectrum technology and a terahertz radiation source used in the terahertz human body imaging technology belong to two completely different technical systems, so that the substance identification capability of the terahertz spectrum cannot be reflected on the terahertz human body imaging technology.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in: how to solve the problem that article identification ability is not enough in the human safety inspection technique of present terahertz formation of image effectively, provided a terahertz wave and metal detection comprehensive imaging safety inspection equipment.
The utility model solves the technical problems by the following technical proposal, the utility model comprises a chassis, a receiving and transmitting array bracket, a rotary scanning component and a control center component, wherein the receiving and transmitting array bracket is arranged on the chassis, the receiving and transmitting array bracket is rotationally connected with the chassis, the rotary scanning component is arranged on the receiving and transmitting array bracket, the rotary scanning component can drive the receiving and transmitting array bracket to rotate, thereby carrying out more comprehensive detection on the detected person standing on the chassis, the receiving and transmitting array bracket is provided with a terahertz receiving and transmitting array, a metal detecting coil array and a magnetic field generating coil, the number of the terahertz receiving and transmitting array and the metal detecting coil array is a plurality of, a plurality of the terahertz receiving and transmitting arrays and a plurality of the metal detecting coil arrays are evenly distributed on both sides of the inner surface of the receiving and transmitting array bracket, the terahertz transmitting-receiving array, the magnetic field generating coil and the metal detection array are all electrically connected with the control center component.
Furthermore, the plurality of terahertz transmitting and receiving arrays and the plurality of metal detection coil arrays are uniformly and symmetrically distributed on two sides of the inner surface of the transmitting and receiving array support. Can guarantee like this that each terahertz receives and dispatches array and metal detection coil array coincidence in vertical direction, install on surveying array support back, along with surveying array support around being detected personnel synchronous rotation to terahertz image and the metal image visual angle that generate are identical completely, make things convenient for the later stage to compare.
Furthermore, the plurality of terahertz transmitting and receiving arrays and the plurality of metal detection coil arrays which are positioned on the same side of the transmitting and receiving array support are sequentially arranged at intervals. The two detectors can be uniformly arranged in the same area by sequential interval arrangement, so that the target can be imaged under the same visual angle.
Furthermore, the magnetic field generating coil positioned on the same side of the transmitting and receiving array bracket is arranged outside the terahertz transmitting and receiving array and the metal detection coil array.
Furthermore, the receiving and dispatching array support comprises two vertical rods and a cross rod, the two vertical rods and the cross rod are located in the same vertical plane, the two vertical rods are connected through the cross rod, the two vertical rods are symmetrically arranged on two sides of the upper end of the chassis, and the rotary scanning assembly is arranged on the cross rod.
Furthermore, a plurality of terahertz transmitting and receiving arrays and a plurality of metal detection coil arrays are uniformly distributed on the inner side surfaces of the two vertical rods.
Furthermore, the safety inspection equipment further comprises a calibration metal ball, the calibration metal ball is arranged on the transceiving array support, and the terahertz image and the metal signal of the metal calibration ball can be determined in advance and can be used as calibration data of subsequent measurement.
Furthermore, the control center component comprises a control unit, an acquisition unit and a processing unit;
the control unit is respectively connected with the terahertz transceiving array and the magnetic field generating coil;
the acquisition unit is respectively connected with the terahertz transceiving array and the metal detection array;
the processing unit is respectively connected with the control unit and the acquisition unit.
Further, the rotary scanning assembly is connected with an external driving device. The processing unit is also electrically connected with an external driving device, thereby completing the rotation control work of the rotating scanning assembly.
Furthermore, the rotary scanning assembly is a driven rotary wheel, the rotary scanning assembly is fixedly connected with the transceiving array support, the external driving device is a driving motor, and the driven rotary wheel is connected with an output shaft of the driving motor through a belt.
Compared with the prior art, the utility model has the following advantages: the terahertz wave is used for displaying the shape and the position of articles carried by a person through the penetrability of the clothing, the metal detection imaging technology is used for classifying and identifying the metal articles carried by the person through the identification capability of the metal articles, the good detection and identification capability is achieved through the processes of comparing, analyzing, identifying, calibrating and re-identifying two images, the problem that the identification capability of the articles in the existing security inspection equipment is limited is solved, and the terahertz wave security inspection equipment can be used for security inspection work in various public places such as airports, stations, stadiums and the like.
Drawings
Fig. 1 is a schematic view of an overall structure of a terahertz wave and metal detection integrated imaging security inspection apparatus in the second embodiment of the present invention;
fig. 2 is a flowchart of the safety inspection apparatus for terahertz wave and metal detection integrated imaging in the second embodiment of the present invention.
In the figure: 1. a chassis; 2. a rotary scanning assembly; 3. a transmit-receive array mount; 4. a terahertz transceiving array; 5. a magnetic field generating coil; 6. a magnetic field generating coil; 7. calibrating the metal ball; 8. and controlling the central components.
Detailed Description
The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example one
The embodiment provides a technical scheme: a terahertz wave and metal detection comprehensive imaging safety inspection device comprises a chassis, a receiving and transmitting array support, a rotary scanning assembly and a control center assembly, wherein the receiving and transmitting array support is arranged on the chassis, the receiving and transmitting array support is rotationally connected with the chassis, the rotary scanning assembly is arranged on the receiving and transmitting array support, the receiving and transmitting array support can be driven to rotate through the rotary scanning assembly, so that a detected person standing on the chassis can be comprehensively detected, a terahertz receiving and transmitting array, a metal detection coil array and a magnetic field generating coil are arranged on the receiving and transmitting array support, the number of the terahertz receiving and transmitting array and the number of the metal detection coil array are multiple, the terahertz receiving and transmitting array and the metal detection coil array are uniformly distributed on two sides of the inner surface of the receiving and transmitting array support, the terahertz transmitting-receiving array, the magnetic field generating coil and the metal detection array are all electrically connected with the control center component.
The plurality of terahertz transmitting and receiving arrays and the plurality of metal detection coil arrays are uniformly and symmetrically distributed on two sides of the inner surface of the transmitting and receiving array support. Can guarantee like this that each terahertz receives and dispatches array and metal detection coil array coincidence in vertical direction, install on surveying array support back, along with surveying array support around being detected personnel synchronous rotation to terahertz image and the metal image visual angle that generate are identical completely, make things convenient for the later stage to compare.
The terahertz transmitting and receiving arrays and the metal detection coil arrays are arranged on the same side of the transmitting and receiving array support at intervals in sequence, and two detectors can be uniformly arranged in the same area through the arrangement at intervals in sequence so as to image a target under the same visual angle.
The magnetic field generating coil positioned on the same side of the transmitting and receiving array support is arranged outside the terahertz transmitting and receiving array and the metal detection coil array.
The receiving and dispatching array support comprises two vertical rods and a cross rod, the two vertical rods and the cross rod are located in the same vertical plane, the two vertical rods are connected through the cross rod, the two vertical rods are symmetrically arranged on two sides of the upper end of the chassis, and the rotary scanning assembly is arranged on the cross rod.
The plurality of terahertz receiving and transmitting arrays and the plurality of metal detection coil arrays are uniformly distributed on the inner side surfaces of the two vertical rods.
The safety inspection equipment further comprises a calibration metal ball, the calibration metal ball is arranged on the transceiving array support, and terahertz images and metal signals of the metal calibration ball can be determined in advance and can be used as calibration data of subsequent measurement.
The control center component comprises a control unit, an acquisition unit and a processing unit;
the control unit is respectively connected with the terahertz transceiving array and the magnetic field generating coil, controls the terahertz transceiving array to emit terahertz waves to the detected person, and controls the magnetic field generating coil to generate a magnetic field in the detection area;
the collecting unit is respectively connected with the terahertz transceiving array and the metal detection array, collects terahertz signals received by the terahertz transceiving array and collects metal signals received by the metal detection array;
the processing unit is respectively connected with the control unit and the acquisition unit, processes the acquired signals and provides a detection result.
The rotary scanning component is connected with an external driving device. The processing unit is also electrically connected with an external driving device, thereby completing the rotation control work of the rotating scanning assembly.
The rotary scanning assembly is a driven rotating wheel and is fixedly connected with the transceiving array support, the external driving device is a driving motor, and the driven rotating wheel is connected with an output shaft of the driving motor through a belt.
Example two
As shown in fig. 1 and fig. 2, the present embodiment provides a technical solution: a terahertz wave and metal detection comprehensive imaging safety inspection device comprises a chassis 1, a rotary scanning assembly 2, a transmitting and receiving array support 3, a terahertz transmitting and receiving array 4, a magnetic field generating coil 5, a metal detection coil array 6, a calibration metal ball 7 and a control center assembly 8.
The control center assembly 8 is adopted as the control center of the whole imaging system, and the functions of the control center mainly comprise:
controlling the rotation of the rotary scanning component 2;
the terahertz receiving and transmitting array 4 is controlled to transmit terahertz waves to the detected person;
controlling the magnetic field generating coil 5 to generate a magnetic field in the detection area;
collecting terahertz signals received by a terahertz transceiving array 4;
collecting metal signals received by the metal detection array 6;
and processing the acquired signals and giving a detection result.
The terahertz transmitting and receiving array 4, the magnetic field generating coil 5 and the metal detection coil array 6 are arranged on the same detection array bracket 3 and rotate around the detected person under the driving of the rotary scanning assembly 2 as a whole. The terahertz receiving and transmitting array 4 and the metal detection coil array 6 are completely overlapped in the vertical direction, so that the movement tracks of the terahertz receiving and transmitting array and the metal detection coil array are ensured to be completely overlapped with each other and the visual angles relative to the detected person are completely overlapped, and the terahertz receiving and transmitting array and the metal detection coil array are in the same coordinate system in the subsequent positioning comparison, so that the best comparison accuracy is achieved.
The working principle is as follows: first, a magnetic field is generated in the detection region by the magnetic field generating coil 5 so that the metal detection coil array 6 can detect the presence of metal by detecting a change in the magnetic field when metal is present. And synchronously collecting terahertz signals received by the terahertz transceiving array 4 and metal signals received by the metal detection array 6 in the rotation process of the detection array support 3 by using a collecting unit in the control center assembly 8. Secondly, the terahertz waves reflected by the human body are processed by utilizing a synthetic aperture imaging algorithm to form a terahertz image of the human body, and the shape and the position of the human body and the hidden objects in the clothes are displayed on the image. And then, directly generating a metal distribution image by using the received metal signal two-dimensional matrix, wherein the intensity of the metal signal can be displayed on the image. And classifying the articles hidden in the clothes according to the signal intensity. And then, the terahertz image and the metal detection image are synchronously calibrated by using the metal calibration ball, so that the standard calibration ball signals of the two detection methods are consistent, and comparison of other targets in the later period is facilitated. And finally, comparing and analyzing the terahertz image and the metal image, selecting the article with the most obvious characteristics on the two images, wherein the article has the highest identification accuracy, and defining the article as a standard identification article. And calibrating the terahertz image and the metal image by using the standard identification object, and identifying other objects with characteristics weaker than those of the standard identification object. And then comparing the calibrated terahertz image with the metal image again, so as to distinguish dangerous articles (knives, guns and the like) from daily necessities (mobile phones, keys and the like).
In summary, the terahertz wave and metal detection comprehensive imaging safety inspection equipment in the two embodiments displays the shape and position of articles carried by a person by using the penetrability of the terahertz wave to clothes, classifies and identifies the metal articles carried by the person by using the identification capability of the metal articles by using the metal detection imaging technology, achieves good detection and identification capability through the processes of comparing, analyzing, identifying, calibrating and re-identifying two images, solves the problem that the identification capability of the conventional safety inspection equipment to the articles is limited, and can be used for safety inspection work in various public places such as airports, stations, stadiums and the like.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (9)
1. The utility model provides a terahertz wave and metal detection synthesize formation of image safety inspection equipment which characterized in that: the terahertz transmission and reception array comprises a chassis, a transmission and reception array support, a rotary scanning assembly and a control center assembly, wherein the transmission and reception array support is arranged on the chassis, the transmission and reception array support is connected with the chassis in a rotating manner, the rotary scanning assembly is arranged on the transmission and reception array support, the transmission and reception array support can be driven to rotate through the rotary scanning assembly, a terahertz transmission and reception array, a metal detection coil array and a magnetic field generating coil are arranged on the transmission and reception array support, the number of the terahertz transmission and reception array and the number of the metal detection coil array are multiple, the number of the magnetic field generating coils is two, the terahertz transmission and reception array and the metal detection coil arrays are uniformly distributed on two sides of the inner surface of the transmission and reception array support, and the two magnetic field generating coils are respectively arranged on two sides of the inner surface of the, the terahertz receiving and transmitting array, the magnetic field generating coil and the metal detection array are all electrically connected with the control center component.
2. The terahertz wave and metal detection integrated imaging safety inspection device as claimed in claim 1, wherein: the plurality of terahertz transmitting and receiving arrays and the plurality of metal detection coil arrays are uniformly and symmetrically distributed on two sides of the inner surface of the transmitting and receiving array support.
3. The terahertz wave and metal detection integrated imaging safety inspection device as claimed in claim 1, wherein: the terahertz transmitting and receiving arrays and the metal detection coil arrays are arranged on the same side of the transmitting and receiving array support at intervals in sequence.
4. The terahertz wave and metal detection integrated imaging safety inspection device as claimed in claim 1, wherein: the magnetic field generating coil positioned on the same side of the transmitting and receiving array support is arranged outside the terahertz transmitting and receiving array and the metal detection coil array.
5. The terahertz wave and metal detection integrated imaging safety inspection device as claimed in claim 1, wherein: the receiving and dispatching array support comprises two vertical rods and a cross rod, the two vertical rods and the cross rod are located in the same vertical plane, the two vertical rods are connected through the cross rod, the two vertical rods are symmetrically arranged on two sides of the upper end of the chassis, and the rotary scanning assembly is arranged on the cross rod.
6. The terahertz wave and metal detection integrated imaging safety inspection device as claimed in claim 5, wherein: the plurality of terahertz receiving and transmitting arrays and the plurality of metal detection coil arrays are uniformly distributed on the inner side surfaces of the two vertical rods.
7. The terahertz wave and metal detection integrated imaging safety inspection device as claimed in claim 1, wherein: the safety inspection device further comprises a calibration metal ball disposed on the transceiving array bracket.
8. The terahertz wave and metal detection integrated imaging safety inspection device as claimed in claim 1, wherein: the control center component comprises a control unit, an acquisition unit and a processing unit;
the control unit is respectively connected with the terahertz transceiving array and the magnetic field generating coil;
the acquisition unit is respectively connected with the terahertz transceiving array and the metal detection array;
the processing unit is respectively connected with the control unit and the acquisition unit.
9. The terahertz wave and metal detection integrated imaging safety inspection device as claimed in claim 1, wherein: the rotary scanning component is connected with an external driving device.
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| CN201922187866.9U CN211086662U (en) | 2019-12-09 | 2019-12-09 | Terahertz wave and metal detection comprehensive imaging safety inspection equipment |
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| CN201922187866.9U CN211086662U (en) | 2019-12-09 | 2019-12-09 | Terahertz wave and metal detection comprehensive imaging safety inspection equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112764120A (en) * | 2020-12-29 | 2021-05-07 | 深圳市创艺龙电子科技有限公司 | Metal detection imaging system and scanning device with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112764120A (en) * | 2020-12-29 | 2021-05-07 | 深圳市创艺龙电子科技有限公司 | Metal detection imaging system and scanning device with same |
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