CN203385857U - Millimeter-wave holographic scanning three-dimensional imaging equipment - Google Patents

Abstract

The utility model discloses a millimeter-wave three-dimensional holographic scanning imaging device. The device includes: a first millimeter-wave transceiver module; a second millimeter-wave transceiver module; a first guide rail device, the first millimeter-wave transceiver module is connected to the first guide rail device in a slidable manner; a second guide rail device, the first The second millimeter wave transceiver module is connected to the second guide rail device in a slidable manner; and the drive device is used to drive the first millimeter wave transceiver module to move along the first guide rail device and/or drive the second millimeter wave The transceiver module moves along the second guide rail device, wherein the first scan performed by the first millimeter wave transceiver module and the second scan performed by the second millimeter wave transceiver module are both planar scans. The device can improve the scanning speed and accuracy, simplify the scanning operation and increase the flexibility of the device application.

Description

Millimeter wave 3D holographic scanning imaging equipment

technical field

The utility model relates to the technical field of human body security inspection, in particular to a millimeter-wave three-dimensional holographic scanning imaging device.

Background technique

At present, the most widely used imaging human body or object security inspection technology is mainly X-ray imaging technology and millimeter wave imaging technology. Moreover, millimeter wave imaging technology is increasingly recognized by the market. Millimeter wave imaging technology is mainly divided into passive millimeter wave imaging technology and active millimeter wave imaging technology, and active millimeter wave imaging technology is mainly holographic imaging technology.

Among the active millimeter-wave 3D holographic imaging technologies used in human body security inspection, cylindrical scanning imaging technology is widely used, but its equipment is bulky and its algorithm is complex, and its algorithm is obtained after approximate processing in theory , so the imaging accuracy cannot be guaranteed. In addition, only a vertical antenna array can be used for cylindrical scanning, and the antenna array is longer and has more antenna elements, which greatly increases the cost of the equipment.

The active millimeter-wave 3D holographic imaging device with single-sided scanning can only inspect one side of the inspected person at a time. To complete a comprehensive inspection of the inspected person, two scans are required, and the inspected person needs to turn around between the two scans. , the security check process is more complicated and slower.

Utility model content

The purpose of the utility model is to provide a millimeter-wave three-dimensional holographic scanning imaging device, which can quickly and efficiently realize the millimeter-wave three-dimensional holographic scanning imaging and simplify the system structure.

In order to realize above-mentioned utility model purpose, the technical scheme of the utility model is realized in the following ways:

According to a first aspect of the present utility model, a millimeter-wave three-dimensional holographic scanning imaging device is provided, comprising:

A first millimeter-wave transceiver module, the first millimeter-wave transceiver module includes a first millimeter-wave transceiver antenna array for sending and receiving first millimeter-wave signals;

A second millimeter-wave transceiver module, the second millimeter-wave transceiver module includes a second millimeter-wave transceiver antenna array for sending and receiving second millimeter-wave signals;

A first guide rail device, the first millimeter wave transceiver module is connected to the first guide rail device in a slidable manner so as to be able to move along the first guide rail device to perform a first scan of the object to be measured;

A second guide rail device, the second millimeter wave transceiver module is connected to the second guide rail device in a slidable manner so as to be able to move along the second guide rail device to perform a second scan on the object to be measured; and

a driving device, configured to drive the first millimeter-wave transceiver module to move along the first guide rail device and/or drive the second millimeter-wave transceiver module to move along the second guide rail device,

Wherein the first scan performed by the first millimeter wave transceiver module and the second scan performed by the second millimeter wave transceiver module are planar scans.

Further, the direction of the first scan and the direction of the second scan may be the same or opposite.

Further, the direction of the first scan and the direction of the second scan may be parallel to each other, perpendicular to each other or at an oblique angle to each other.

Further, the movement of the first millimeter wave transceiver module and/or the second millimeter wave transceiver module may be performed in a vertical direction.

Further, the first scan and the second scan may be performed synchronously or asynchronously.

Further, the first scan and the second scan may have different scan speeds.

Furthermore, the driving device may include a first driving device directly driving the first millimeter-wave transceiver module, and the first millimeter-wave transceiver module is connected to the first guide rail device through the first driving device; and/or the The driving device may include a second driving device directly driving the second millimeter wave transceiver module, and the second millimeter wave transceiver module is connected to the second guide rail device through the second driving device.

Furthermore, the millimeter-wave three-dimensional holographic scanning imaging device may also include a linkage device, the linkage device is used to make the first millimeter-wave transceiver module and the second millimeter-wave transceiver module move in relation to each other, and the driving device The movement of the first millimeter wave transceiver module and the second millimeter wave transceiver module is driven by driving at least one of the linkage device, the first millimeter wave transceiver module and the second millimeter wave transceiver module.

Furthermore, the first guide rail device and/or the second guide rail device may be composed of a single guide rail or a plurality of parallel guide rails.

Further, the millimeter-wave three-dimensional holographic scanning imaging device also includes:

A data processing device, the data processing device is wirelessly or wiredly connected to the first millimeter wave transceiver module and/or the second millimeter wave transceiver module to receive information from the first millimeter wave transceiver module and/or the second millimeter wave transceiver module. scan data from mmWave transceiver modules and generate mmWave holographic images; and

A display device, the display device is connected to the data processing device, and is used for receiving and displaying the millimeter wave holographic image from the data processing device.

Still further, the data processing device is configured to generate a control signal and send the control signal to the driving device so that the driving device drives the first millimeter wave transceiver module and/or the second millimeter wave transceiver module to move; or The millimeter-wave three-dimensional holographic scanning imaging device also includes a control device independent of the data processing device, the control device is used to generate a control signal and send the control signal to the drive device so that the drive device drives the The movement of the first millimeter wave transceiver module and/or the second millimeter wave transceiver module.

At least one aspect of the above-mentioned technical solution of the utility model can realize biplane scanning of the object to be measured by at least two millimeter-wave transceiver modules. This scheme can improve the scanning speed and accuracy, simplify the scanning operation and improve the flexibility of the device application.

Description of drawings

Figure 1 shows a schematic structural diagram of a millimeter-wave three-dimensional holographic scanning imaging device according to an embodiment of the present invention; and

Fig. 2 shows a flow chart of a human body or object inspection method according to an embodiment of the present invention.

Detailed ways

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following descriptions of the embodiments of the utility model with reference to the accompanying drawings are intended to explain the overall utility model concept of the utility model, and should not be construed as a limitation of the utility model.

Fig. 1 schematically shows a millimeter-wave three-dimensional holographic scanning imaging device 100 according to an embodiment of the present invention. The millimeter-wave three-dimensional holographic scanning imaging device 100 may include: a first millimeter-wave transceiver module 101, a second millimeter-wave transceiver module 102, a first rail device 103, a second rail device 104, and driving devices 105a, 105b. The first millimeter wave transceiver module 101 includes a first millimeter wave transceiver antenna array for sending and receiving first millimeter wave signals. Moreover, the first millimeter wave transceiver module 101 is connected to the first guide rail device 103 in a slidable manner so as to be able to move along the first guide rail device 103 to perform a first scan on the object 110 to be measured. Similarly, the second millimeter-wave transceiver module 102 includes a second millimeter-wave transceiver antenna array for sending and receiving second millimeter-wave signals, and is connected to the second rail device 104 in a slidable manner so as to be able to move along the The second rail device 104 moves to perform a second scan on the object 110 to be measured.

That is to say, the millimeter-wave three-dimensional holographic scanning imaging device 100 according to the present invention can simultaneously scan the object 110 in two directions, for example, scan the front and back of the object 110 (such as a human body or an object) simultaneously. This can significantly improve inspection efficiency. For example, when the object 110 to be tested is a human body, the front and back of the human body can be scanned simultaneously without the need for the human body to turn around. This is very helpful for improving detection efficiency. Both the first scan performed by the first millimeter wave transceiver module and the second scan performed by the second millimeter wave transceiver module are planar scans, not cylindrical scans. Compared with cylindrical scanning, the millimeter-wave holographic imaging algorithm required for planar scanning is simpler and more accurate. Moreover, plane scanning can be carried out along any scanning direction (such as vertical, horizontal or inclined, etc.), and cylinder scanning can only be carried out along the arc track of horizontal direction, therefore, according to the scheme of biplane scanning of the present utility model The flexibility is obviously better than the cylinder scanning in the prior art.

It should be noted that although FIG. 1 shows the situation where the first millimeter wave transceiver module 101 and the second millimeter wave transceiver module 102 are arranged oppositely, this is not necessary. For example, if (For example, the side front or side rear of the object to be measured 110, etc.) to obtain better image effects, the first millimeter wave transceiver module 101 and the second millimeter wave transceiver module 102 may not be arranged to face each other, but their mm The sending direction of the wave signal is arranged to have a certain angle.

The driving devices 105a, 105b are used to drive the first millimeter wave transceiver module 101 to move along the first guide rail device 103 and/or drive the second millimeter wave transceiver module 102 to move along the second guide rail device 104 . FIG. 1 shows a first driving device 105 a directly driving the first millimeter wave transceiver module 101 and a second driving device 105 b directly driving the second millimeter wave transceiver module 102 . However, not all of these driving devices are necessary, for example, the millimeter-wave three-dimensional holographic scanning imaging device 100 may only include one of these driving devices 105a, 105b. In the case of including more than one driving device, these driving devices can work independently or cooperate together, as long as they can drive the first millimeter wave transceiver module 101 and/or the second millimeter wave transceiver module 102 to realize the scanning action That's it. In the case of using the first driving device 105a and/or the second driving device 105b, the first millimeter wave transceiver module 101 can be connected to the first rail device 103 through the first driving device 105a; and/or the second millimeter wave transceiver The module 102 may be connected to the second rail arrangement 104 via the second drive arrangement 105b.

In an example, the direction of the first scan performed by the first millimeter wave transceiver module 101 and the direction of the second scan performed by the second millimeter wave transceiver module 102 may be the same. In this case, for example, it is easy to obtain images of the same part of the object 110 to be measured at different angles in the most timely manner. In another example, the direction of the first scan performed by the first millimeter wave transceiver module 101 and the direction of the second scan performed by the second millimeter wave transceiver module 102 may also be opposite. This can prevent them from facing each other most of the time during the scanning process, thus reducing the interference between the first millimeter wave transceiver module 101 and the second millimeter wave transceiver module 102 .

Although it is shown in FIG. 1 that the direction of the first scan performed by the first millimeter wave transceiver module 101 and the direction of the second scan performed by the second millimeter wave transceiver module 102 are parallel to each other, those skilled in the art should understand that , this is not essential, the direction of the first scan performed by the first millimeter wave transceiver module 101 and the direction of the second scan performed by the second millimeter wave transceiver module 102 may also be perpendicular to each other or at an oblique angle to each other. Since the length of the millimeter-wave transceiver antenna arrays in the first millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module 102 is limited, in practice, in order to fully utilize the length of the millimeter-wave transceiver antenna array to save costs, It is often desirable to determine the scan direction based on the object being scanned, especially for elongated objects. For example, the directions of the first scan and the second scan can be set to be changeable, so that the user can adjust the scan direction according to needs, which cannot be realized by cylindrical scan.

In an example, the movement of the first millimeter wave transceiver module 101 and/or the second millimeter wave transceiver module 102 may be performed in a vertical direction. This is especially beneficial for scanning upright people. The first scan and the second scan may be performed synchronously to present a three-dimensional holographic image synchronously. However, the first scan and the second scan may also be performed asynchronously, because different surfaces of the object to be measured 110 may have different scanning requirements. For example, a more detailed scan may be required on a certain side or a certain part of the object to be measured 110 , while other parts of the object to be measured 110 may only require a relatively rough scan. In this case, asynchronous separate controls may be employed for the first scan and the second scan. Likewise, the first scan and the second scan may also have different scan speeds, so as to adapt to different scan requirements. Even the scanning speeds of the first scan and the second scan may be changed continuously or intermittently.

In an example, the millimeter-wave three-dimensional holographic scanning imaging device 100 may further include a linkage device for making the first millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module 102 move in relation to each other. For example, the linkage device can make the moving speeds of the first millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module 102 equal or have a certain speed difference, or make the first millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module The wave transceiver module 102 maintains a certain distance or phase difference during the movement. The linkage device can be realized by connecting the first millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module 102 with a mechanical cable, or can connect the first millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module 101 through pneumatic, hydraulic, magnetic or electrostatic components. The two millimeter wave transceiver module 102 imposes constraints. Even, the linkage device can be realized by constraints in the driving control signals of the first millimeter wave transceiver module 101 and the second millimeter wave transceiver module 102 . The linkage device can not only realize the motion constraints on the first millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module 102, but also improve the stability and reliability of their movement, and can even provide the first millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module. The millimeter wave transceiver module 102 provides protection against accidents.

In the case of using a linkage device, the driving device can drive the first millimeter wave by driving one or more of the linkage device, the first millimeter wave transceiver module 101 and the second millimeter wave transceiver module 102 Movement of the transceiver module 101 and the second millimeter wave transceiver module 102 .

In an example, the first rail arrangement 103 and the second rail arrangement 104 may be substantially parallel to each other. However, this is not necessary, for example, for the convenience of arrangement. They can also form a certain angle of inclination. In an example, the first guide rail device 103 and/or the second guide rail device 104 may be composed of a single guide rail, or may be composed of multiple parallel guide rails. The latter solution can make the movement of the first millimeter wave transceiver module 101 and/or the second millimeter wave transceiver module 102 more stable.

In an example, the millimeter-wave three-dimensional holographic scanning imaging device 100 may further include a data processing device 107 . The data processing device 107 is wirelessly or wiredly connected (for example, via a wire 108) to the first millimeter wave transceiver module 101 and/or the second millimeter wave transceiver module 102 to receive signals from the first millimeter wave transceiver module 101 and/or the second millimeter wave transceiver module 101 and/or the second millimeter wave transceiver module 102. The millimeter wave transceiver module 102 scans the data and generates a millimeter wave holographic image. The millimeter-wave three-dimensional holographic scanning imaging device 100 may also include a display device 109 . The display device 109 is connected with the data processing device 107 for receiving and displaying the millimeter wave holographic image from the data processing device 107 .

In an example, the data processing device 107 is configured to generate a control signal and send the control signal to the driving device 105a, 105b so that the driving device 105a, 105b drives the first millimeter wave transceiver module 101 and/or the second millimeter wave transceiver module 101 Module 102 moves. In another example, the millimeter-wave three-dimensional holographic scanning imaging device 100 may also include a control device independent of the data processing device 107, and the control device is used to generate a control signal and send the control signal to the driving device 105a, 105b The driving devices 105a and 105b drive the first millimeter wave transceiver module 101 and/or the second millimeter wave transceiver module 102 to realize scanning motion.

In order to reduce the signal interference between the first millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module 102, in an example, the first millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module 102 are used together to treat the test object 110 In the whole process of scanning, in at least 50% of the time, for example, in the period of time when the distance between the first millimeter wave transceiver module 101 and the second millimeter wave transceiver module 102 is relatively close, or in the whole time of the scanning process Here, the first millimeter wave signal sent and received by the first millimeter wave transceiver module 101 and the second millimeter wave signal sent and received by the second millimeter wave transceiver module 102 use different frequencies.

In another example, during the whole process that the first millimeter wave transceiver module 101 and the second millimeter wave transceiver module 102 scan the object under test 110 together, the first millimeter wave transceiver antenna array in the first millimeter wave transceiver module 101 It is different from the moment when the second millimeter wave transceiver antenna array in the second millimeter wave transceiver module 102 transmits millimeter waves, that is, does not transmit millimeter waves at the same time. This can also weaken or avoid signal interference between the first millimeter wave transceiver module 101 and the second millimeter wave transceiver module 102 .

In the example shown in circle 1 , the object 110 to be measured (a human body shown in the figure) is located between the first millimeter wave transceiver module 101 and the second millimeter wave transceiver module 102 . The first millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module 102 can respectively scan the front and back of the object 110 to obtain data for the data processing device 107 to generate a millimeter-wave image. However, this is not necessary, and the first millimeter wave transceiver module 101 and the second millimeter wave transceiver module 102 can scan any surface of the object 110 to be tested.

The utility model also provides a method for inspecting a human body or an object by using a millimeter-wave three-dimensional holographic scanning imaging device, as shown in FIG. 2 . The methods include:

Step 301: Put the human body or object in the position to be measured and place the first millimeter wave transceiver module 101 and the second millimeter wave transceiver module 102 in their respective scanning starting positions;

Step 302: Drive the first millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module 102 from their respective scanning starting positions along the first guide rail device 103 and the second guide rail device by means of the driving devices 105a, 105b, 105c, and 105d. 104 continuously or intermittently move to the respective scanning end positions to complete the scanning of the human body or object;

Step 303: During the scanning process and/or after the scanning is over, send the data collected by the first millimeter wave transceiver module 101 and the second millimeter wave transceiver module 102 during the scanning process to the data processing device 107; and

Step 304: Use the data processing device 107 to process the data received from the first millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module 102 to generate a millimeter-wave holographic image of the human body or object.

In the above step 302, the scanning performed by the first millimeter wave transceiver module 101 and the scanning performed by the second millimeter wave transceiver module 102 are planar scanning.

As mentioned above, during the scanning process of the first millimeter wave transceiver module 101 and the second millimeter wave transceiver module 102, the scan performed by the first millimeter wave transceiver module 101 and the scan performed by the second millimeter wave transceiver module 102 can be with the same or different scan speeds.

In order to reduce the signal interference between the first millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module 102, in step 302, the frequency division method as described above (the first millimeter-wave transceiver module 101 and the second millimeter-wave transceiver module 101 and the second The millimeter wave transceiver module 102 transmits and receives millimeter waves at different frequencies) or in a time division manner (the first millimeter wave transceiver module 101 and the second millimeter wave transceiver module 102 transmit millimeter waves at different times).

In an example, the above method may also optionally include step 305: after generating the millimeter-wave holographic image of the human body or object, automatically identify whether the human body or object has a suspect and the location of the suspect, and Output the result. This helps to quickly identify suspects and prevent security risks, which is especially beneficial in airports, customs and other applications that need to quickly determine security risks.

Although the utility model has been described in conjunction with the drawings, the embodiments disclosed in the drawings are intended to illustrate the preferred implementation of the utility model, and should not be construed as a limitation of the utility model.

Although some embodiments of the present general inventive concept have been shown and described, those skilled in the art will appreciate that changes can be made to these embodiments without departing from the principles and spirit of the present general inventive concept. The scope of the utility model is defined by the claims and their equivalents.

Claims (11)

1. a millimeter wave 3D hologram scanning imagery equipment comprises:

The first millimeter wave transceiving module, described the first millimeter wave transceiving module comprises the first millimeter wave transceiving aerial array for sending and receiving the first millimeter-wave signal;

The second millimeter wave transceiving module, described the second millimeter wave transceiving module comprises the second millimeter wave transceiving aerial array for sending and receiving the second millimeter-wave signal;

The first track-type facilities, can move that object to be measured is carried out to the first scanning along described the first track-type facilities thereby described the first millimeter wave transceiving module is connected to described the first track-type facilities in mode that can slippage;

The second track-type facilities, can move that described object to be measured is carried out to the second scanning along described the second track-type facilities thereby described the second millimeter wave transceiving module is connected to described the second track-type facilities in mode that can slippage; With

Drive unit, move and/or drive described the second millimeter wave transceiving module to move along described the second track-type facilities along described the first track-type facilities for driving described the first millimeter wave transceiving module,

Described the second scanning that described the first scanning that wherein said the first millimeter wave transceiving module is carried out and described the second millimeter wave transceiving module are carried out is all flat scanning.

2. millimeter wave 3D hologram scanning imagery equipment according to claim 1, is characterized in that, the direction of the direction of described the first scanning and described the second scanning is identical or contrary.

3. millimeter wave 3D hologram scanning imagery equipment according to claim 1, is characterized in that, the direction of the direction of described the first scanning and described the second scanning is that be parallel to each other, orthogonal or is in pitch angle.

4. millimeter wave 3D hologram scanning imagery equipment according to claim 1, is characterized in that, the mobile in the vertical direction of described the first millimeter wave transceiving module and/or described the second millimeter wave transceiving module carries out.

5. millimeter wave 3D hologram scanning imagery equipment according to claim 1, is characterized in that, described the first scanning and described the second scan-synchronized or carry out asynchronously.

6. millimeter wave 3D hologram scanning imagery equipment according to claim 1, is characterized in that, described the first scanning and described the second scanning have different sweep velocitys.

7. according to the described millimeter wave 3D hologram of any one scanning imagery equipment in claim 1-6; it is characterized in that; described drive unit comprises the first drive unit of described the first millimeter wave transceiving module of direct driving, and described the first millimeter wave transceiving module is connected to the first track-type facilities by the first drive unit; And/or described drive unit comprises the second drive unit of described the second millimeter wave transceiving module of direct driving, described the second millimeter wave transceiving module is connected to the second track-type facilities by the second drive unit.

8. according to the described millimeter wave 3D hologram of any one scanning imagery equipment in claim 1-5, it is characterized in that, described millimeter wave 3D hologram scanning imagery equipment also comprises linkage, described linkage is for making described the first millimeter wave transceiving module and the second millimeter wave transceiving module interrelatedly mobile, and described drive unit is by driving at least one in described linkage, described the first millimeter wave transceiving module and the second millimeter wave transceiving module to drive the movement of described the first millimeter wave transceiving module and the second millimeter wave transceiving module.

9. according to the described millimeter wave 3D hologram of any one scanning imagery equipment in claim 1-6, it is characterized in that, described the first track-type facilities and/or the second track-type facilities consist of wall scroll guide rail or many parallel guide rails.

10. according to the described millimeter wave 3D hologram of any one scanning imagery equipment in claim 1-6, also comprise:

Data processing equipment, described data processing equipment and described the first millimeter wave transceiving module and/or described the second millimeter wave transceiving module wireless connections or wired connection are to receive from the scan-data of the first millimeter wave transceiving module and/or described the second millimeter wave transceiving module and to generate the millimeter wave hologram image; With

Display device, described display device is connected with described data processing equipment, for receiving and showing the millimeter wave hologram image from data processing equipment.

11. millimeter wave 3D hologram scanning imagery equipment according to claim 10; it is characterized in that, described data processing equipment is for generating control signal and control signal being sent to described drive unit so that described drive unit drives described the first millimeter wave transceiving module and/or the second millimeter wave transceiving block motion; Or described millimeter wave 3D hologram scanning imagery equipment also comprises and described data processing equipment control device independently mutually, described control device is for generating control signal and control signal being sent to described drive unit so that described drive unit drives described the first millimeter wave transceiving module and/or the second millimeter wave transceiving block motion.

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