CN111458754A - Array type millimeter wave security inspection system - Google Patents
Array type millimeter wave security inspection system Download PDFInfo
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- CN111458754A CN111458754A CN202010023559.1A CN202010023559A CN111458754A CN 111458754 A CN111458754 A CN 111458754A CN 202010023559 A CN202010023559 A CN 202010023559A CN 111458754 A CN111458754 A CN 111458754A
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
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Abstract
The invention discloses an array type millimeter wave security inspection system, which is characterized in that: the array millimeter wave security inspection system comprises: at least one subarray module which sends millimeter waves to the area to be detected and receives the millimeter waves; the main controller is connected with each subarray module, controls the working state of the subarray module and receives data transmitted by the subarray module; the frame module is used for placing the subarray module and the main controller; the subarray modules are sequentially arranged on the frame module to form an array structure. The invention achieves the following beneficial effects: the millimeter wave security inspection equipment capable of realizing the static security inspection mode is provided.
Description
Technical Field
The invention relates to an array type millimeter wave security inspection system.
Background
In places with large pedestrian flow, such as railway stations, airports and the like, the conventional security inspection process still adopts a mode of combining machine inspection and people inspection, the mode has low efficiency and high cost, and is not suitable for the places with large pedestrian flow, and meanwhile, the false inspection rate is high due to the existence of people inspection.
Although some large-sized case machines can reduce manual operation pressure in the prior art, all-around security inspection is realized by sliding of a security inspection part in the case machines, once the parts are damaged, the whole case machines cannot operate, and people flow can be directly blocked at the security inspection position seriously.
Disclosure of Invention
An array millimeter wave safety inspection system is characterized in that:
the array millimeter wave security inspection system comprises:
at least one subarray module which sends millimeter waves to the area to be detected and receives the millimeter waves;
the main controller is connected with each subarray module, controls the working state of the subarray module and receives data transmitted by the subarray module;
the frame module is used for placing the subarray module and the main controller;
the sub-array modules are sequentially arranged on the frame module to form an array structure; the frame module includes:
a space above the pedal portion is used as a region to be detected;
and a sole detector is arranged in the pedal part so as to activate equipment of the array type millimeter wave security inspection system when people exist above the pedal part.
Further, the subarray module comprises:
at least one transmitter for emitting millimeter waves to the area to be detected;
at least one receiver for receiving the millimeter waves returned from the area to be detected;
and the control module is respectively connected with the transmitter and the receiver and used for controlling the working states of the transmitter and the receiver.
Further, the control module includes:
the frequency conversion module is used for controlling the signal frequency;
the power supply module is used for providing electric energy required by the subarray module;
and the control panel is used for controlling the subarray module.
Further, the number of transmitters and receivers in the sub-array module is the same.
Further, the frame module further includes:
a main frame vertically fixed to one side of the step part;
the connecting beams are distributed on the main frame, and a plurality of cavities formed among the connecting beams are used for placing the subarray module; the subarray module is connected with the connecting beam;
the cavities are distributed in an array.
Further, the main frame further includes:
and a heat dissipation part for dissipating heat of the air flow in the main frame.
Further, the sub-array module is rectangular and comprises:
a transmitter located on a set of opposing sides of the rectangle;
a receiver located on the other pair of edges of the matrix;
wherein, the transmitter and the receiver are positioned on the same surface of the rectangle;
and the control module is positioned on the other side of the rectangle.
Further, the transmitting direction of the transmitter and the receiving direction of the receiver are both towards the area to be detected.
Further, the transmitting direction of the transmitter and the receiving direction of the receiver are parallel to each other.
Further, array millimeter wave safety inspection system includes:
and the panel is positioned on the frame module and used for shielding all the subarray modules.
The invention achieves the following beneficial effects: the millimeter wave security inspection equipment capable of realizing the static security inspection mode is provided.
Drawings
FIG. 1 is an overall structural view of the present solution;
FIG. 2 is a schematic structural view of a frame;
FIG. 3 is a rear view of a subarray module;
FIG. 4 is a front view of a subarray module;
FIG. 5 is a block diagram of a master;
fig. 6 is a back structural view of the master.
The meaning of the reference symbols in the figures:
100-subarray module, 110-transmitter, 120-receiver, 130-control module, 131-intermediate frequency module, 132-frequency multiplication module, 133-power module, 134-control panel, 135-panel, 200-master controller, 210-phase locking source, 220-power source, 230-master control panel, 240-power divider, 300-frame module, 310-pedal part, 320-main frame, 330-connecting beam and 340-heat dissipation part.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In this embodiment, the sub-array module is illustrated by using 4 × 5 as an example.
Array millimeter wave safety inspection system in this scheme includes:
the 4 x 5 sub-array module sends millimeter waves to the area to be detected and receives the millimeter waves;
and the main controller is connected with each subarray module, controls the working state of the subarray modules and receives data transmitted by the subarray modules, and the connection and data transmission of the main controller and each subarray module are independent.
As a specific embodiment, each subarray module is rectangular, and includes:
2 transmitters, which are used for sending millimeter waves to the area to be detected and are positioned on a pair of edges of the rectangle;
2 receivers, which are used for receiving the millimeter waves returned from the area to be detected and are positioned on the other pair of edges of the matrix;
and the transmitter and receiver are located on the same face of the rectangle. The transmitter and the receiver cannot be arranged opposite to each other, otherwise, the transmission and the reception of the millimeter waves can be greatly influenced.
In this embodiment, the size of the sub-array module is 443 × 439 × 63.5.5 mm, which is set according to the size of the antenna, that is, the size of the antenna is fixed in the present view, and other sizes can be adjusted.
And the control module is respectively connected with the transmitter and the receiver, is used for controlling the working states of the transmitter and the receiver and is positioned on the other surface of the rectangle.
The distribution of the transmitter and the receiver can reasonably utilize the positions of the rectangles, and the mutual interference of the transmitter and the receiver and other subarray modules is small in the process of transmitting and receiving millimeter waves.
All set up control module and master controller in the cavity of frame module, can set up the radiating part effectively and dispel the heat, for example adopt the electric fan, through setting up at the top of main frame to the matching has the vent, forms an effective ventilation route, and the heat of inside production when reducing long-term this device of using is favorable to the long-term use of product, improves the durability.
In this embodiment, the transmitter and the receiver are paired and have the same array size, or the paired structure may not be used, but the effect is far inferior to the distribution structure involved in this embodiment.
As a specific embodiment, the control module includes:
and the frequency conversion module is used for controlling the signal frequency and comprises an intermediate frequency module and a frequency doubling module.
And the power supply module provides electric energy required by the subarray module, and an AC/DC power supply module is adopted in the embodiment.
And the FPGA control panel is used for controlling the subarray module.
As a specific example, the frame module includes:
the footboard portion, the space of its top is used for regarding as waiting to detect the region, can inlay the sole detector in the inside of footboard portion to be connected with whole equipment, whether have the human body to stand up through the sole detector, in case detect to have, awaken the equipment in the standby, monitor to can save certain energy consumption.
The tie-beams are distributed on the main frame, and a plurality of cavities formed between the tie-beams are used for placing the subarray module. The subarray module is connected with the connecting beam so as to be convenient to detach and fix.
And the panel is positioned on the frame module and used for shielding all the subarray modules.
The panel mainly is used for sheltering from the subarray module in this structure, also is simultaneously for whole equipment is more pleasing to the eye, needs to reduce the influence that is located the millimeter wave as far as on the selection material, and material P260 is selected to the material of panel in this embodiment, and the dielectric constant of material is close to 1 (that is the dielectric constant of air) as far as possible when selecting materials on the whole to when making the use, be very little to the loss of millimeter wave.
As a specific embodiment, the master controller includes a phase-locked source, a power supply, a master control board and a power divider.
The phase-locked sources are respectively a receiving phase-locked source and a transmitting phase-locked source, the two power dividers are respectively corresponding to the receiving phase-locked source and the transmitting phase-locked source, the two power supplies are respectively corresponding to the receiving phase-locked source and the transmitting phase-locked source, and the main control board is provided with one.
The transmitting phase-locked source and the receiving phase-locked source respectively generate signals with frequencies of f1 and f2, and the signals are respectively supplied to the transmitter and the receiver to be local oscillators. The transmitter transmits the local oscillator signal out through the transmitting antenna after the frequency of the local oscillator signal is multiplied by the frequency multiplication module. The signal is reflected back after striking the target object and is received by the receiving antenna. The signals received by the receiving antenna are transmitted to the receiver as radio frequency, and the receiver can mix intermediate frequency signals by combining the local oscillation signals input to the receiver before. After the intermediate frequency signal is transmitted into the intermediate frequency module, a series of amplification and filtering are carried out, and finally the intermediate frequency signal reaches a data acquisition module (FPGA control panel) for digital-to-analog conversion and storage.
As a specific example, the tread portion may further include a function of automatic rotation.
Through set up the rotating part on sole detector, the rotating part drives sole detector and rotates, and the pivoted scope surpasss 360 degrees at least to make cross inspection personnel's side can be straight face millimeter wave detection portion, and then realize the all-round detection at 360 degrees no dead angles, improve the quality of safety inspection.
As a specific embodiment, a monitoring device may be disposed at an entrance of the stepping portion, for example, a camera is used, and the camera is located at the top of the door-like structure or at the upper portion near the entrance or exit side for monitoring from a high position downwards, so as to prevent any small motion at the shoulder or head of the passing person, and improve the detection quality.
And a display module is arranged outside the whole equipment and used for displaying the detection result.
As a specific embodiment, the display module in the scheme further corresponds to a database, which contains the emission conditions of millimeter waves to different objects, and according to the data conditions received by the millimeter wave receiving part, possible objects corresponding to the millimeter wave detection position can be judged, the database is formed through a large number of data tests, when the millimeter wave detection part is used on the spot, the millimeter wave detection part can directly call out the same data from the database according to the received data, and then related information can be directly displayed on the display module, so that the method is more intuitive, and the working efficiency of security inspection workers can be improved.
As a specific embodiment, the scheme can also be provided with an alarm device which is connected with the display module, and once forbidden articles or unknown articles appear, an alarm can be given out in time.
Compared with the prior art which adopts the mode that the transmitting part moves up and down to carry out all-dimensional security inspection, the static mode can firstly avoid the abrasion of the equipment, does not need to frequently overhaul the equipment, not only can reduce the workload of workers, but also improves the durability of the whole equipment, secondly, once the situation that the interior of the equipment needs to be replaced and maintained occurs, because the scheme adopts a mode of splicing a plurality of subarray modules, can directly dismantle the change with the subarray module that needs to change the maintenance, for dynamic security check mode, the maintenance degree of difficulty reduces to 0 almost, and dynamic maintenance is extremely complicated, not only need stop the security check, still need remove maintenance portion in time, and whole process is wasted time and energy, and this device need not only carry out simple corresponding change can.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An array millimeter wave safety inspection system is characterized in that:
the array millimeter wave security inspection system comprises:
at least one subarray module which sends millimeter waves to the area to be detected and receives the millimeter waves;
the main controller is connected with each subarray module, controls the working state of the subarray module and receives data transmitted by the subarray module;
the frame module is used for placing the subarray module and the main controller;
the sub-array modules are sequentially arranged on the frame module to form an array structure; the frame module includes:
a space above the pedal portion is used as a region to be detected;
and a sole detector is arranged in the pedal part so as to activate equipment of the array type millimeter wave security inspection system when people exist above the pedal part.
2. The array millimeter wave security inspection system of claim 1, wherein:
the subarray module comprises:
at least one transmitter for emitting millimeter waves to the area to be detected;
at least one receiver for receiving the millimeter waves returned from the area to be detected;
and the control module is respectively connected with the transmitter and the receiver and used for controlling the working states of the transmitter and the receiver.
3. The array millimeter wave security inspection system of claim 2, wherein:
the control module includes:
the frequency conversion module is used for controlling the signal frequency;
the power supply module is used for providing electric energy required by the subarray module;
and the control panel is used for controlling the subarray module.
4. The array millimeter wave security inspection system of claim 2, wherein:
the number of the transmitters and the number of the receivers in the subarray module are the same.
5. The array millimeter wave security inspection system of claim 1, wherein:
the frame module further includes:
a main frame vertically fixed to one side of the pedal portion;
the connecting beams are distributed on the main frame, and a plurality of cavities formed among the connecting beams are used for placing the subarray module; the subarray module is connected with the connecting beam;
the cavities are distributed in an array.
6. The array millimeter wave security inspection system of claim 5, wherein:
the main frame further includes:
and a heat dissipation part for dissipating heat of the air flow in the main frame.
7. The array millimeter wave security inspection system of claim 2, wherein:
the subarray module is rectangular and comprises:
said transmitter located on a set of opposing sides of a rectangle;
said receiver being located on another pair of paired edges of the matrix;
wherein the transmitter and the receiver are located on the same face of a rectangle;
the control module is positioned on the other side of the rectangle.
8. The array millimeter wave security inspection system of claim 7, wherein:
and the transmitting direction of the transmitter and the receiving direction of the receiver face to the area to be detected.
9. The array millimeter wave security inspection system of claim 8, wherein:
the transmitting direction of the transmitter and the receiving direction of the receiver are parallel to each other.
10. The array millimeter wave security inspection system of claim 1, wherein:
the array millimeter wave security inspection system comprises:
and the panel is positioned on the frame module and used for shielding all the subarray modules.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910152448 | 2019-02-28 | ||
| CN2019101524488 | 2019-02-28 |
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| CN111458754A true CN111458754A (en) | 2020-07-28 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305075A (en) * | 2015-11-23 | 2016-02-03 | 中国电子科技集团公司第五十四研究所 | Sheathed millimeter wave satellite communication phased array antenna |
| CN106094048A (en) * | 2016-07-26 | 2016-11-09 | 华讯方舟科技有限公司 | Portable security inspection equipment based on mm-wave imaging |
| CN208384111U (en) * | 2018-08-13 | 2019-01-15 | 四川久成泰安科技有限公司 | A kind of equipment of novel compact mm-wave imaging |
| CN109358372A (en) * | 2018-03-09 | 2019-02-19 | 同方威视技术股份有限公司 | Millimeter wave transceiving aerial array, millimeter wave scanning imaging system and its imaging method |
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2020
- 2020-01-09 CN CN202010023559.1A patent/CN111458754A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305075A (en) * | 2015-11-23 | 2016-02-03 | 中国电子科技集团公司第五十四研究所 | Sheathed millimeter wave satellite communication phased array antenna |
| CN106094048A (en) * | 2016-07-26 | 2016-11-09 | 华讯方舟科技有限公司 | Portable security inspection equipment based on mm-wave imaging |
| CN109358372A (en) * | 2018-03-09 | 2019-02-19 | 同方威视技术股份有限公司 | Millimeter wave transceiving aerial array, millimeter wave scanning imaging system and its imaging method |
| CN208384111U (en) * | 2018-08-13 | 2019-01-15 | 四川久成泰安科技有限公司 | A kind of equipment of novel compact mm-wave imaging |
Non-Patent Citations (1)
| Title |
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| 张江华 等: "《毫米波导引头系统设计与工程实现》", 国防工业出版社, pages: 58 * |
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