CN112799041A - Imaging detection system and imaging detection method - Google Patents
Imaging detection system and imaging detection method Download PDFInfo
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Abstract
The invention relates to the technical field of security inspection, and discloses an imaging detection system and an imaging detection method. The imaging detection system comprises an electromagnetic wave scanning module, a data acquisition module and a data processing module, wherein the electromagnetic wave scanning module is used for transmitting electromagnetic waves to a target object and receiving an echo signal reflected by the target object; the data acquisition module is connected with the electromagnetic wave scanning module and is used for acquiring the echo signals; the control module is respectively connected with the electromagnetic wave scanning module and the data acquisition module and is used for controlling the electromagnetic wave scanning module to generate electromagnetic waves and controlling the electromagnetic wave scanning module and the data acquisition module to move according to a preset movement mode; and the data processing module is connected with the data acquisition module and used for acquiring a scanned image according to the echo signal, identifying the scanned image and judging whether dangerous goods exist in the scanned image. Because the electromagnetic wave can penetrate through the sole, the images of all parts of the sole can be accurately presented, the early warning of dangerous goods hidden on the sole is finished according to the images, and the safety inspection efficiency is high.
Description
Technical Field
The invention relates to the technical field of security inspection, in particular to an imaging detection system and an imaging detection method.
Background
Nowadays, public safety problems are gradually paid attention to by people, at present, safety inspection in public places mainly depends on an X-ray detector to detect articles, dangerous articles hidden on the body by terrorists can only be inspected manually, and efficiency is very low. Dangerous goods on terrorist clothing can be checked by touch of a security checker, and are often missed when hidden on soles. At present, two common sole safety inspection modes are provided, one mode is that safety inspection personnel manually detect the person after taking off the shoes, huge workload is brought to the safety inspection personnel, and the shoes take off is remarkable in reduction of safety inspection efficiency and difficult to meet safety inspection requirements of various occasions. The other safety inspection mode is to utilize a sole metal detector, which can only realize the detection of metal and is difficult to detect other dangerous objects, and has the defects of overhigh sensitivity, high false alarm rate, easy generation of false alarm and incapability of effectively solving the problem of sole safety inspection.
Disclosure of Invention
Therefore, it is necessary to provide an imaging detection system and an imaging detection method for solving the problem of low safety check efficiency of the existing sole safety check method.
An imaging detection system comprises an electromagnetic wave scanning module, a data processing module and a data processing module, wherein the electromagnetic wave scanning module is used for transmitting electromagnetic waves to a target object, receiving the electromagnetic waves reflected by the target object and outputting echo signals according to the reflected electromagnetic waves; the data acquisition module is connected with the electromagnetic wave scanning module and is used for acquiring the echo signals; the control module is respectively connected with the electromagnetic wave scanning module and the data acquisition module and is used for controlling the electromagnetic wave scanning module to generate electromagnetic waves and controlling the electromagnetic wave scanning module and the data acquisition module to move according to a preset movement mode; and the data processing module is connected with the data acquisition module and used for acquiring a scanned image of the target object according to the echo signal, identifying the scanned image and judging whether dangerous goods exist in the scanned image.
According to the imaging detection system, the electromagnetic wave scanning module generates the electromagnetic wave for scanning the target object, and meanwhile, the electromagnetic wave scanning module also receives the electromagnetic wave reflected by the target object and forms the echo signal according to the reflected electromagnetic wave. The data acquisition module acquires echo signals generated by the electromagnetic wave scanning module and transmits the echo signals to the data processing module. The data processing module can perform imaging processing according to all the collected echo signals to acquire a scanned image of the target object, perform image recognition on the scanned image and judge whether dangerous goods exist in the scanned image. The control module is used for controlling the electromagnetic wave scanning module to generate electromagnetic waves and controlling the electromagnetic wave scanning module and the data acquisition module to move according to a preset movement mode. Because the electromagnetic wave can penetrate through the sole, images of all parts of the sole can be accurately presented, early warning of dangerous goods hidden in the sole can be achieved through detection of the images, and the purpose of detecting the dangerous goods without taking off the shoes is achieved. Through carrying out non-contact detection to the sole, can reduce security installations personnel's work load by a wide margin, improve security installations efficiency. Meanwhile, the method can realize accurate detection of metal and nonmetal dangerous goods, solves the problem of false alarm of a metal detector, and can be used in various places with higher safety level requirements.
In one embodiment, the electromagnetic wave scanning module comprises a microwave/millimeter wave scanning device.
In one embodiment, the microwave/millimeter wave scanning device comprises a microwave/millimeter wave generating and receiving device for generating microwave/millimeter wave radio frequency signals; the microwave/millimeter wave radiation device is connected with the microwave/millimeter wave generation and receiving device and is used for transmitting microwave/millimeter waves to a target object according to the microwave/millimeter wave radio-frequency signals, receiving the microwave/millimeter waves reflected by the target object and outputting echo signals according to the reflected microwave/millimeter waves; the microwave/millimeter wave generating and receiving device is also used for receiving the echo signal and carrying out frequency conversion processing on the echo signal.
In one embodiment, the microwave/millimeter wave generating and receiving device comprises a microwave/millimeter wave generating module for generating the microwave/millimeter wave radio frequency signal; the microwave/millimeter wave receiving module is used for receiving the echo signal; and the signal processing module is connected with the microwave/millimeter wave receiving module and is used for carrying out frequency conversion processing on the echo signal.
In one embodiment, the microwave/millimeter wave radiation device includes a transmitting antenna unit, connected to the microwave/millimeter wave generation module, for transmitting microwave/millimeter wave to a target object according to the microwave/millimeter wave radio frequency signal; the receiving antenna unit is connected with the microwave/millimeter wave receiving module and used for receiving the microwave/millimeter waves reflected by the target object and outputting echo signals according to the reflected microwave/millimeter waves; the transmitting switch array is connected with the transmitting antenna unit and used for switching on or off a connecting passage with the transmitting antenna unit according to a preset switching sequence; and the receiving switch array is connected with the receiving antenna unit and used for switching on or off a connecting passage with the receiving antenna unit according to a preset switching sequence.
In one embodiment, the imaging detection system further includes a motion scanning device, which is respectively connected to the electromagnetic wave scanning module and the data acquisition module, and is configured to drive the electromagnetic wave scanning module and the data acquisition module to move according to a preset motion mode under the control of the control module.
In one embodiment, the motion scanning apparatus comprises a guide rail; the electromagnetic wave scanning module and the data acquisition module are fixed on the synchronous belt and are used for driving the electromagnetic wave scanning module and the data acquisition module to move according to the running track defined by the guide rail; and the driving module is connected with the synchronous belt and used for pulling the synchronous belt to move according to the control of the control module.
In one embodiment, the motion scanning apparatus further includes a position feedback module, connected to the data acquisition module, for feeding back position information of the electromagnetic wave scanning module.
In one embodiment, the imaging detection system further comprises a casing, and the electromagnetic wave scanning module, the data acquisition module and the control module are all arranged inside the casing; and the wave-transmitting antenna housing covers the upper surface of the shell and is used for supporting a target object.
In one embodiment, the imaging detection system further includes a display device connected to the data processing module, and configured to receive and display the scanned image and the detection result of the hazardous substance.
An imaging detection method is applied to an imaging detection system, the imaging detection system comprises an electromagnetic wave scanning module, a data acquisition module, a control module and a data processing module, and the imaging detection method comprises the step that the control module controls the electromagnetic wave scanning module to move to a first pre-scanning position; the electromagnetic wave scanning module generates first-frequency electromagnetic waves to a target object, receives the electromagnetic waves reflected by the target object and outputs a first echo signal according to the reflected electromagnetic waves; the data acquisition module acquires the first echo signal; after the data acquisition of the first echo signal is finished, the electromagnetic wave scanning module generates electromagnetic waves with a second frequency to a target object, and the steps are repeated until the data acquisition under all the frequency points is finished; the control module controls the electromagnetic wave scanning module to move to a second pre-scanning position, and the steps are repeated until data acquisition under all radio frequency signals at all pre-scanning positions is completed; and the data processing module performs imaging processing on data under all radio frequency signals at all pre-scanning positions to obtain a scanning image, identifies the scanning image and judges whether dangerous goods exist in the scanning image.
Drawings
FIG. 1 is a block diagram of an imaging detection system according to an embodiment of the present invention;
fig. 2 is a block diagram of a microwave/millimeter wave scanning apparatus according to an embodiment of the present invention;
fig. 3 is a block diagram of a microwave/millimeter wave generating and receiving apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a connection of an imaging detection system according to an embodiment of the present invention;
FIG. 5 is a block diagram of an imaging detection system according to another embodiment of the present invention;
FIG. 6 is a flowchart of a method of an imaging detection method according to an embodiment of the invention;
fig. 7 is an image output result of the imaging detection system according to an embodiment of the invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," "circumferential," and the like are based on the orientation or positional relationship shown in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
At present, two common sole safety inspection modes are provided, one mode is that safety inspection personnel manually detect the person after taking off the shoes, huge workload is brought to the safety inspection personnel, and the shoes take off is remarkable in reduction of safety inspection efficiency and difficult to meet safety inspection requirements of various occasions. The other safety inspection mode is to utilize a sole metal detector, which can only realize the detection of metal and is difficult to detect other dangerous objects, and has the defects of overhigh sensitivity, high false alarm rate, easy generation of false alarm and incapability of effectively solving the problem of sole safety inspection.
The invention provides an imaging detection system, which utilizes electromagnetic waves to carry out grid scanning on a sole and carry out holographic imaging on the sole.
Fig. 1 is a block diagram of an imaging detection system according to an embodiment of the present invention, in which the on-body imaging detection system includes an electromagnetic wave scanning module 100, a data acquisition module 200, a control module 300, and a data processing module 400. The electromagnetic wave scanning module 100 is configured to transmit an electromagnetic wave to a target object, receive the electromagnetic wave reflected by the target object, and output an echo signal according to the reflected electromagnetic wave. The data acquisition module 200 is connected to the electromagnetic wave scanning module 100, and is configured to perform signal acquisition on the echo signal. The control module 300 is connected to the electromagnetic wave scanning module 100 and the data acquisition module 200, respectively, and is configured to control the electromagnetic wave scanning module 100 to generate electromagnetic waves and control the electromagnetic wave scanning module 100 and the data acquisition module 200 to move according to a preset movement mode. The data processing module 400 is connected to the data acquisition module 200, and is configured to acquire a scanned image of the target object according to the echo signal, identify the scanned image, and determine whether there is a dangerous object in the scanned image.
Electromagnetic wave imaging is originally derived from synthetic aperture radar imaging, scattering information of an object to be detected to electromagnetic waves is obtained, an image of an object area to be detected is obtained through processing of an imaging algorithm, microwave band electromagnetic waves of hundreds of megahertz to dozens of gigahertz are generally used, along with the development of millimeter wave and terahertz wave technologies, the frequency of an imaging system is expanded to several terahertz, and various electromagnetic wave imaging systems are applied to the fields of geographic information detection, through-wall radars, ground penetrating radars, safety inspection and the like.
The imaging detection system generates an electromagnetic wave for scanning a target object by using the electromagnetic wave scanning module 100, receives the electromagnetic wave reflected by the target object by using the electromagnetic wave scanning module 100, and forms an echo signal according to the reflected electromagnetic wave. The data acquisition module 200 acquires the echo signal generated by the electromagnetic wave scanning module 100 and transmits the acquired echo signal to the data processing module 400. The data processing module 400 may perform imaging processing according to all the acquired echo signals, acquire a scanned image of the target object, perform image recognition on the scanned image, and determine whether a dangerous article exists in the scanned image. The control module 300 is configured to control the electromagnetic wave scanning module 100 to generate electromagnetic waves, and further control the electromagnetic wave scanning module 100 and the data acquisition module 200 to move according to a preset movement manner.
Because the electromagnetic wave can penetrate through the sole, images of all parts of the sole can be accurately presented, early warning of dangerous goods hidden in the sole can be achieved through detection of the images, and the purpose of detecting the dangerous goods without taking off the shoes is achieved. Through carrying out non-contact detection to the sole, can reduce security installations personnel's work load by a wide margin, improve security installations efficiency. Meanwhile, the method can realize accurate detection of metal and nonmetal dangerous goods, solves the problem of false alarm of a metal detector, and can be used in various places with higher safety level requirements.
In one embodiment, the electromagnetic wave scanning module 100 includes a microwave/millimeter wave scanning device. The electromagnetic wave in the microwave/millimeter wave frequency band has the characteristics of high safety, good penetrability, metal sensitivity and the like, so that the method is very suitable for a security inspection system. The method comprises the steps of generating electromagnetic waves in a microwave/millimeter wave frequency band by using a microwave/millimeter wave scanning device to scan a target area, and imaging scattering distribution of the electromagnetic waves according to an object in the target area to judge whether the object in the target area is dangerous or not so as to achieve the purpose of safety inspection.
Fig. 2 is a block diagram of a microwave/millimeter wave scanning apparatus according to an embodiment of the present invention, wherein the microwave/millimeter wave scanning apparatus includes a microwave/millimeter wave generating and receiving apparatus 110 and a microwave/millimeter wave radiating apparatus 120. The microwave/millimeter wave generating and receiving device 110 is used for generating microwave/millimeter wave radio frequency signals. The microwave/millimeter wave radiation device 120 is connected to the microwave/millimeter wave generation and reception device 110, and configured to transmit microwave/millimeter waves to a target object according to the microwave/millimeter wave radio frequency signal, receive the microwave/millimeter waves reflected by the target object, and output an echo signal according to the reflected microwave/millimeter waves. The microwave/millimeter wave generating and receiving device 110 is further configured to receive the echo signal and perform frequency conversion processing on the echo signal.
The microwave/millimeter wave generating and receiving device 110 is used for generating a radio frequency signal in a microwave/millimeter wave frequency band and transmitting the radio frequency signal to the microwave/millimeter wave radiating device 120. The microwave/millimeter wave radiation device 120 transmits the microwave/millimeter wave to the target object according to the microwave/millimeter wave frequency band radio frequency signal. In this embodiment, the imaging detection system is a system for imaging and detecting the sole of a foot, and therefore, transmits microwave/millimeter waves to the sole of a person to be examined. The microwave/millimeter wave radiation device 120 receives the scattered microwave/millimeter wave and outputs an echo signal according to the received microwave/millimeter wave after the microwave/millimeter wave is transmitted to the sole of the person to be detected and is reflected and scattered by the sole. The microwave/millimeter wave generating and receiving device 110 receives the echo signal, performs frequency conversion processing on the received echo signal, adjusts the echo signal to a corresponding intermediate frequency band, obtains the echo signal of the intermediate frequency band, and facilitates the imaging processing of the echo signal by the subsequent data processing module 400.
In one embodiment, as shown in fig. 2, the microwave/millimeter wave generating and receiving apparatus 110 includes a microwave/millimeter wave generating module 111, a microwave/millimeter wave receiving module 112, and a signal processing module 113. The microwave/millimeter wave generating module 111 is shown for generating the microwave/millimeter wave radio frequency signal. The microwave/millimeter wave receiving module 112 is shown for receiving the echo signal. The signal processing module 113 is connected to the microwave/millimeter wave receiving module 112, and is configured to perform frequency conversion processing on the echo signal.
Fig. 3 is a block diagram of a microwave/millimeter wave generating and receiving apparatus according to an embodiment of the present invention, in which the microwave/millimeter wave generating and receiving apparatus 110 respectively generates a first frequency hopping source and a second frequency hopping source by using a crystal oscillator. The first frequency hopping source is the microwave/millimeter wave of the required frequency band, the microwave/millimeter wave of the required frequency band is output to the transmitting antenna unit 121 of the microwave/millimeter wave radiating device 120 through the transmitting port connected to the microwave/millimeter wave radiating device 120, and the transmitting antenna unit 121 is utilized to realize the transmission of the electromagnetic wave.
The receiving port of the microwave/millimeter wave generating and receiving device 110 is connected to the microwave/millimeter wave radiating device 120, and is used for acquiring the echo signal received by the receiving antenna unit 122 and scattered back by the sole of the person to be examined. And performing first frequency conversion processing on the echo signal by using a second frequency hopping source generated by the crystal oscillator to obtain a first frequency conversion signal, and performing band-pass filtering and amplification processing on the first frequency conversion signal. The frequencies of the first frequency hopping source and the second frequency hopping source are subjected to frequency mixing, filtering and amplification to be used as secondary frequency mixing signals, the second frequency conversion processing is performed on the first frequency conversion signals subjected to band-pass filtering and amplification processing to obtain second frequency conversion signals of corresponding intermediate frequency bands, and the second frequency conversion signals are used as echo signals subjected to frequency conversion processing and output to the data acquisition module 200 through the intermediate frequency output port.
In one embodiment, as shown in fig. 2, the microwave/millimeter wave radiation device 120 includes a transmitting antenna unit 121, a receiving antenna unit 122, a transmitting switch array 123 and a receiving switch array 124. The transmitting antenna unit 121 is connected to the microwave/millimeter wave generating module 111, and configured to transmit the microwave/millimeter wave to the target object according to the microwave/millimeter wave radio frequency signal. The receiving antenna unit 122 is connected to the microwave/millimeter wave receiving module 112, and is configured to receive the microwave/millimeter wave reflected by the target object, and output an echo signal according to the reflected microwave/millimeter wave. The transmitting switch array 123 is connected to the transmitting antenna unit 121, and configured to turn on or turn off a connection path with the transmitting antenna unit according to a preset switching sequence. The receiving switch array 124 is connected to the receiving antenna unit 122, and configured to turn on or turn off a connection path with the receiving antenna unit according to a preset switching sequence.
When the imaging detection system is needed to detect a person to be detected, the microwave/millimeter wave generation module 111 generates a radio frequency signal of microwave/millimeter wave in a required frequency band, and outputs the microwave/millimeter wave radio frequency signal to the transmitting antenna unit 121 through the transmitting switch array 123 via the input port of the microwave/millimeter wave radiation device 120. The transmitting antenna unit 121 includes a plurality of groups of transmitting antennas, the transmitting switch array 123 also includes a plurality of transmitting switches correspondingly, the number of the transmitting switches is the same as that of the transmitting antennas, and each transmitting switch is connected to each transmitting antenna in a one-to-one correspondence manner. The transmitting switch array 123 is sequentially turned on according to the scanning requirement, so that a connection path from the input port to the transmitting antenna unit 121 is turned on, microwave/millimeter wave is transmitted by using the antenna array in the transmitting antenna unit 121, and beam scanning in the one-dimensional direction of the antenna array is completed. After the transmission of the microwave/millimeter wave is completed, the transmission switch array 123 is controlled to be turned off according to the detection requirement, so that the connection path from the input port to the transmission antenna unit 121 is cut off.
The emitted microwaves/millimeter waves are scattered by the person to be inspected and then collected by the receiving antenna unit 122. The receiving antenna unit 122 outputs the received microwave/millimeter wave to an output port of the microwave/millimeter wave radiating device 120 through the receiving switch array 124. The receiving antenna unit 122 also includes a plurality of groups of receiving antennas, and the receiving switch array 124 also includes a plurality of receiving switches correspondingly, the number of the receiving switches is the same as that of the receiving antennas, and each receiving switch is connected to each receiving antenna in a one-to-one correspondence manner. And sequentially switching on the receiving switch arrays 123 corresponding to the transmitting arrays according to the scanning requirement, so as to switch on the connection path from the receiving antenna unit 122 to the output port, and transmitting the received scattered microwave/millimeter waves to the microwave/millimeter wave receiving module 112 through the output port, thereby completing the collection process of the reflected microwave/millimeter waves by the imaging detection system. After the transmission of the scattered microwave/millimeter wave is completed, the receiving switch array 124 is controlled to be switched off according to the detection requirement, so that the connection path between the receiving antenna unit 122 and the output port is disconnected.
In one embodiment, the imaging detection system further comprises a motion scanning apparatus 500. The motion scanning device 500 is respectively connected to the electromagnetic wave scanning module 100 and the data acquisition module 200, and is configured to drive the electromagnetic wave scanning module 100 and the data acquisition module 200 to move according to a preset motion mode under the control of the control module 300. Since the detection effect of the target object is limited due to the use of the microwave/millimeter waves at the fixed position, the electromagnetic wave scanning module 100 needs to be controlled to move to detect the target object more comprehensively. The motion scanning device 500 is utilized to drive the electromagnetic wave scanning module 100 and the data acquisition module 200 to move according to a preset motion mode, so as to perform full-scale imaging on the target object, thereby accurately presenting partial images of the target object.
In this embodiment, the preset movement mode is a grid movement, and the movement scanning device 500 is used to drive the electromagnetic wave scanning module 100 to move, so that the electromagnetic wave scanning module 100 is used to perform grid scanning on the sole of a foot, imaging of all parts of the sole of a foot can be realized under the condition that shoes are not taken off, dangerous goods are monitored through images, and the security inspection efficiency is improved.
Fig. 4 is a schematic connection diagram of an imaging detection system according to an embodiment of the present invention, in which the motion scanning apparatus 500 includes a guide rail 510, a timing belt 520, and a driving module 530. The guide rail 510 defines a movement track and a movement route of the electromagnetic wave scanning module 100. The electromagnetic wave scanning module 100 and the data acquisition module 200 are fixed on the synchronous belt 520, and the synchronous belt 520 is used for driving the electromagnetic wave scanning module 100 and the data acquisition module 200 to move according to the running track defined by the guide rail 510. The driving module 530 is connected to the synchronous belt 520, and is configured to pull the synchronous belt to move according to the control of the control module 300.
In this embodiment, the driving module 530 is a motor and a driving device thereof. The control module 300 controls a driving device of the motor, the driving motor rotates, and the electromagnetic wave scanning module 100 and the data acquisition module 200 fixed on the synchronous belt 520 are driven to move along the running track defined by the guide rail 510 by using the traction action of the motor on the synchronous belt 520, so as to complete the scanning in the one-dimensional direction of the guide rail 510. By controlling the driving device of the motor by the control module 300, the electromagnetic wave scanning module 100 can complete the grid scanning, so as to obtain a more accurate target object image.
Fig. 5 is a block diagram of an imaging detection system according to another embodiment of the present invention, wherein in one embodiment, the motion scanning apparatus 500 further includes a position feedback module 540. The position feedback module 540 is connected to the data acquisition module 200, and is configured to feed back position information of the electromagnetic wave scanning module 100. The position feedback module 540 monitors the position of the electromagnetic wave scanning module 100, obtains the position information of the electromagnetic wave scanning module 100, and feeds back the position information of the electromagnetic wave scanning module 100 to the data acquisition module 200.
The data acquisition module 200 can also determine whether the electromagnetic wave scanning module 100 accurately reaches the pre-scanning position according to the position information fed back by the motion scanning device 500. The pre-scanning position is composed of a plurality of points distributed along the guide rail at equal intervals, and the interval distance is selected according to the scanning requirement in practical application. If the electromagnetic wave scanning module 100 reaches the pre-scanning position, controlling the electromagnetic wave scanning module 100 to start scanning; otherwise, the motion scanning device 500 is controlled to drive the electromagnetic wave scanning module 100 to move until the electromagnetic wave scanning module 100 reaches the pre-scanning position.
In one embodiment, as shown in fig. 4, the imaging detection system further includes a housing 600 and a wave-transparent radome 700. The electromagnetic wave scanning module 100, the data collecting module 200, the control module 300 and the motion scanning device 500 are all disposed inside the case 600. The guide rail 510 is distributed in the machine casing 600, the electromagnetic wave scanning module 100 and the data acquisition module 200 are fixed on the synchronous belt 520, and the grid scanning motion is completed in the machine casing 600 along the preset motion track of the guide rail 510 under the drive of the synchronous belt 520.
The upper surface of the case 600 is a wave-transparent radome 700, and the wave-transparent radome 700 covers all the movement ranges of the electromagnetic wave scanning module 100, and is used for supporting a target object. The wave-transmitting radome 700 is made of a wave-transmitting material, and can be used for transmitting electromagnetic waves of corresponding frequency bands. In this embodiment, the microwave/millimeter wave may pass through the wave-transparent radome 700 on the upper surface from the inside of the enclosure 600 to reach the sole of the foot of the person to be inspected standing on the wave-transparent radome 700. The wave-transparent radome 700 has a supporting effect on the one hand for the person to be inspected, and on the other hand can perform fixed-point positioning on the standing position of the person to be inspected, so that the person to be inspected can be ensured to stand in a specified effective scanning area, and the electromagnetic wave scanning module 100 can accurately scan the soles of the person to be inspected.
In one embodiment, the imaging detection system further comprises a display device 800. The display device 800 is connected to the data processing module 400, and is configured to receive and display the scanned image and the detection result of the dangerous goods. After the electromagnetic wave scanning module 100 finishes scanning the soles of the persons to be detected, the data acquisition device 200 acquires and summarizes the echo data of all the preset positions, and transmits the acquired echo data to the data processing module 400 in a wired or wireless manner. The data acquisition device 400 adopts a millimeter wave image reconstruction algorithm to perform imaging processing on the echo data and outputs a scanned image of the person to be detected, wherein the scanned image comprises foot image information of the person to be detected. The data acquisition device 400 then detects the dangerous goods in the scanned image, and judges whether the dangerous goods exist in the image according to the foot image information of the person to be detected displayed on the scanned image.
The data processing module 400 is connected to the display device 800 in a wired or wireless manner, and transmits the acquired scan image and the detection result of the dangerous goods to the display device 800 for displaying. The security inspector can know the foot scanning image of the person to be inspected and whether the foot of the person to be inspected is hidden with dangerous goods according to the information displayed on the display device 800. Through the accurate imaging to each part of foot to detect between the dangerous goods according to the image further, not only can realize not only having lightened security check personnel's work load, having improved security check efficiency to non-contact detection to sole, security check personnel can judge whether have dangerous goods according to the information that shows on display device 800 simply directly perceivedly, and convenient and fast gets up to use. Meanwhile, the imaging detection system provided by the invention can accurately detect metals and non-metals, solves the problem of false alarm of a metal detector, and can be applied to various places with higher safety level requirements.
The invention also provides an imaging detection method, which is applied to the imaging detection system provided in the embodiment. Fig. 6 is a flowchart of an imaging detection method according to an embodiment of the present invention, wherein the imaging detection method includes the following steps S100 to S600.
S100: the control module controls the electromagnetic wave scanning module to move to a first pre-scanning position.
S200: the electromagnetic wave scanning module generates electromagnetic waves with a first frequency to a target object, receives the electromagnetic waves reflected by the target object and outputs a first echo signal according to the reflected electromagnetic waves.
S300: and the data acquisition module acquires the first echo signal.
S400: after the data acquisition of the first echo signal is finished, the electromagnetic wave scanning module generates electromagnetic waves with the second frequency to the target object, and the steps are repeated until the data acquisition under all the frequency points is finished.
S500: and the control module controls the electromagnetic wave scanning module to move to a second pre-scanning position, and the steps are repeated until the data acquisition under all the radio frequency signals at all the pre-scanning positions is completed.
S600: and the data processing module performs imaging processing on data under all radio frequency signals at all pre-scanning positions to obtain a scanning image, identifies the scanning image and judges whether dangerous goods exist in the scanning image.
When the imaging detection system is used for scanning and detecting the personnel to be detected, the personnel to be detected is enabled to stand to an appointed scanning area, namely stand to the wave-transparent antenna cover 700, and then the imaging detection system is started to scan the personnel to be detected. The triggering of the scanning behavior may be set to be triggered by manual software or manually by a hardware detection device, and is specifically set according to actual application requirements.
After the imaging detection system is started, the control module 300 controls the driving device of the motor to drive the motor to rotate. The electromagnetic wave scanning module 100 and the data acquisition module 200 fixed on the synchronous belt 520 are driven to move along the movement track defined by the guide rail 510 by the traction action of the motor on the synchronous belt 520. The electromagnetic wave scanning module 100 is driven by the timing belt 520 to move along the horizontal guide direction from one side of the scanning area to the other side of the scanning area. Meanwhile, the position feedback device 540 feeds back the position information of the electromagnetic wave scanning module 100 to the data acquisition module 200. The data acquisition module 200 receives the position information of the electromagnetic wave scanning module 100, and determines whether the electromagnetic wave scanning module 100 moves to the first pre-scanning position according to the position information of the electromagnetic wave scanning module 100. If the electromagnetic wave scanning module 100 reaches the pre-scanning position, starting the first single-row scanning of the electromagnetic wave scanning module 100; otherwise, the motion scanning device 500 continues to drive the electromagnetic wave scanning module 100 to move until the first pre-scanning position is reached.
When the electromagnetic wave scanning module 100 performs the first single-row scanning, the microwave/millimeter wave generating and receiving device 110 generates the frequency f1Transmits the first frequency electromagnetic wave to the microwave/millimeter wave radiation device 120. The microwave/millimeter wave radiation device 120 sequentially turns on each transmission channel in each transmission switch array 123 and turns on the reception channel in each reception switch array 124 corresponding to each transmission channel. The frequency f is transmitted by the transmitting antenna unit 121 in the microwave/millimeter wave radiating device 1201The first frequency microwave/millimeter wave is transmitted, and the reflected first frequency microwave/millimeter wave is received by the receiving antenna unit 122 to complete f1And transmitting and receiving signals of each channel under the frequency point.
The microwave/millimeter wave is transmitted to the sole of the person to be detected through the wave-transparent antenna cover, the microwave/millimeter wave is reflected by the sole of the person to be detected, and the reflected microwave/millimeter wave is received by the microwave/millimeter wave radiation device 120. The microwave/millimeter wave radiation device 120 outputs a first echo signal to the microwave/millimeter wave generation and reception device 110 according to the received reflected microwave/electromagnetic wave. The microwave/millimeter wave generating and receiving device 110 performs frequency conversion on the first echo signal to obtain an echo signal of a corresponding intermediate frequency band, and transmits the frequency-converted first echo signal to the data acquisition module 200.
After the data acquisition module 200 acquires and collects data, the relevant data is transmitted to the data processing module 400 in a wired or wireless manner. At this time, the electromagnetic wave scanning module 100 is considered to be finished with the sole f of the person to be detected1Scanning under frequency points and data acquisition. At the completion of pair f1After scanning at the frequency point, the microwave/millimeter wave generating and receiving device 110 switches the frequency to f2The microwave/millimeter wave generating and receiving device 110 generates a frequency f2The second frequency electromagnetic wave of (2), reuse the micro-waveThe wave/millimeter wave radiation device 120 is completed at f2And transmitting and receiving signals of each channel under the frequency point. And repeating the steps until the scanning and data acquisition of the soles of the person to be detected under all the frequency points are completed, and at the moment, determining that the electromagnetic wave scanning module 100 completes the first single-row scanning.
After the first single-line scanning is completed, the motion scanning apparatus 500 drives the electromagnetic wave scanning module 100 to move again under the control of the control module 300. The position feedback device 400 is used to feed back the position information of the electromagnetic wave scanning module 100, so as to ensure that the electromagnetic wave scanning module 100 moves to the second pre-scanning position, and then the second single-row scanning is started.
When the electromagnetic wave scanning module 100 performs the second single-row scanning, the scanning process is the same as the first single-row scanning, that is, the scanning and data acquisition at all frequency points are completed, which is not described herein again. After the second single-line scanning is completed, the electromagnetic wave scanning module 100 is moved to the next pre-scanning position. And judging that the scanning process of the electromagnetic wave scanning module 100 on the soles of the people to be detected is finished until the electromagnetic wave scanning module 100 finishes scanning and data acquisition of all frequency points at all pre-scanning positions.
After the data processing module 400 acquires the scanning data acquired at all the frequency points at all the pre-scanning positions in real time, the scanning data is imaged by using a microwave/millimeter wave image reconstruction algorithm to acquire a scanning image of the person to be detected, wherein the scanning image includes foot image information of the person to be detected. The data acquisition device 400 then performs dangerous goods detection on the acquired scanned image, and judges whether dangerous goods exist in the image according to the foot image information of the person to be detected displayed on the scanned image.
Then, the data processing module 400 is connected to the display device 800 in a wired or wireless manner, and transmits the acquired scan image and the detection result of the dangerous goods to the display device 800 for displaying. The security inspector can know the foot scanning image of the person to be inspected and whether the foot of the person to be inspected is hidden with dangerous goods according to the information displayed on the display device 800.
Through the accurate imaging to each part of foot to detect between the dangerous goods according to the image further, not only can realize not only having lightened security check personnel's work load, having improved security check efficiency to non-contact detection to sole, security check personnel can judge whether have dangerous goods according to the information that shows on display device 800 simply directly perceivedly, and convenient and fast gets up to use. Fig. 7 is a graph showing the image output result of the imaging detection system according to one embodiment of the present invention, in which fig. 7 (a) is a scanned image of the metal cutter hidden in the shoe sole, and (b) is a scanned image of the soap flake hidden in the shoe sole. According to the actual scanning result of the imaging detection system, the imaging detection system provided by the invention can accurately detect metal and nonmetal articles, can solve the problem of high false alarm rate of a metal detector, and is suitable for various places with higher safety level requirements.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. An imaging detection system, comprising:
the electromagnetic wave scanning module is used for transmitting electromagnetic waves to a target object, receiving the electromagnetic waves reflected by the target object and outputting echo signals according to the reflected electromagnetic waves;
the data acquisition module is connected with the electromagnetic wave scanning module and is used for acquiring the echo signals;
the control module is respectively connected with the electromagnetic wave scanning module and the data acquisition module and is used for controlling the electromagnetic wave scanning module to generate electromagnetic waves and controlling the electromagnetic wave scanning module and the data acquisition module to move according to a preset movement mode;
and the data processing module is connected with the data acquisition module and used for acquiring a scanned image of the target object according to the echo signal, identifying the scanned image and judging whether dangerous goods exist in the scanned image.
2. The imaging detection system of claim 1, wherein the electromagnetic wave scanning module comprises a microwave/millimeter wave scanning device.
3. The imaging detection system of claim 2, wherein the microwave/millimeter wave scanning device comprises:
the microwave/millimeter wave generating and receiving device is used for generating microwave/millimeter wave radio frequency signals;
the microwave/millimeter wave radiation device is connected with the microwave/millimeter wave generation and receiving device and is used for transmitting microwave/millimeter waves to a target object according to the microwave/millimeter wave radio-frequency signals, receiving the microwave/millimeter waves reflected by the target object and outputting echo signals according to the reflected microwave/millimeter waves;
the microwave/millimeter wave generating and receiving device is also used for receiving the echo signal and carrying out frequency conversion processing on the echo signal.
4. The imaging detection system of claim 3, wherein the microwave/millimeter wave generating and receiving means comprises:
the microwave/millimeter wave generating module is used for generating the microwave/millimeter wave radio frequency signal;
the microwave/millimeter wave receiving module is used for receiving the echo signal;
and the signal processing module is connected with the microwave/millimeter wave receiving module and is used for carrying out frequency conversion processing on the echo signal.
5. The imaging detection system of claim 4, wherein the microwave/millimeter wave radiation device comprises:
the transmitting antenna unit is connected with the microwave/millimeter wave generating module and used for transmitting microwave/millimeter waves to a target object according to the microwave/millimeter wave radio-frequency signals;
the receiving antenna unit is connected with the microwave/millimeter wave receiving module and used for receiving the microwave/millimeter waves reflected by the target object and outputting echo signals according to the reflected microwave/millimeter waves;
the transmitting switch array is connected with the transmitting antenna unit and used for switching on or off a connecting passage with the transmitting antenna unit according to a preset switching sequence;
and the receiving switch array is connected with the receiving antenna unit and used for switching on or off a connecting passage with the receiving antenna unit according to a preset switching sequence.
6. The imaging detection system of claim 1, further comprising:
and the motion scanning device is respectively connected with the electromagnetic wave scanning module and the data acquisition module and is used for driving the electromagnetic wave scanning module and the data acquisition module to move according to a preset motion mode under the control of the control module.
7. The imaging detection system of claim 1, wherein the motion scanning apparatus comprises:
a guide rail;
the electromagnetic wave scanning module and the data acquisition module are fixed on the synchronous belt and are used for driving the electromagnetic wave scanning module and the data acquisition module to move according to the running track defined by the guide rail;
and the driving module is connected with the synchronous belt and used for pulling the synchronous belt to move according to the control of the control module.
8. The imaging detection system of claim 4, wherein the motion scanning apparatus further comprises:
and the position feedback module is connected with the data acquisition module and used for feeding back the position information of the electromagnetic wave scanning module.
9. The imaging detection system of claim 1, further comprising:
the electromagnetic wave scanning module, the data acquisition module and the control module are all arranged in the shell;
and the wave-transmitting antenna housing covers the upper surface of the shell and is used for supporting a target object.
10. The imaging detection system of claim 1, further comprising:
and the display device is connected with the data processing module and is used for receiving and displaying the scanning image and the detection result of the dangerous goods.
11. An imaging detection method is applied to an imaging detection system, the imaging detection system comprises an electromagnetic wave scanning module, a data acquisition module, a control module and a data processing module, and the imaging detection method comprises the following steps:
the control module controls the electromagnetic wave scanning module to move to a first pre-scanning position;
the electromagnetic wave scanning module generates first-frequency electromagnetic waves to a target object, receives the electromagnetic waves reflected by the target object and outputs a first echo signal according to the reflected electromagnetic waves;
the data acquisition module acquires the first echo signal;
after the data acquisition of the first echo signal is finished, the electromagnetic wave scanning module generates electromagnetic waves with a second frequency to a target object, and the steps are repeated until the data acquisition under all the frequency points is finished;
the control module controls the electromagnetic wave scanning module to move to a second pre-scanning position, and the steps are repeated until data acquisition under all radio frequency signals at all pre-scanning positions is completed;
and the data processing module performs imaging processing on data under all radio frequency signals at all pre-scanning positions to obtain a scanning image, identifies the scanning image and judges whether dangerous goods exist in the scanning image.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022142915A1 (en) * | 2020-12-30 | 2022-07-07 | 上海工物高技术产业发展有限公司 | Imaging detection system and imaging detection method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510911A (en) * | 2015-12-25 | 2016-04-20 | 深圳市太赫兹科技创新研究院 | Linear frequency modulation-based multi-human body safety inspection apparatus and method |
| CN105607056A (en) * | 2015-12-28 | 2016-05-25 | 深圳市太赫兹科技创新研究院 | Human body security check system and method |
| CN106093937A (en) * | 2016-05-18 | 2016-11-09 | 中国电子科技集团公司第四十研究所 | A kind of microwave and millimeter wave human body security check system and safety inspection method |
| CN107340269A (en) * | 2017-06-27 | 2017-11-10 | 吉林大学 | The closely ultra wide band Terahertz 3-D imaging system and method for lossless detection |
| CN109031284A (en) * | 2018-08-31 | 2018-12-18 | 博微太赫兹信息科技有限公司 | It is a kind of using millimeter wave or the sole safety check apparatus and method of Terahertz radar |
| CN110632593A (en) * | 2015-12-25 | 2019-12-31 | 华讯方舟科技有限公司 | Human body security check system and method based on millimeter wave holographic three-dimensional imaging |
| CN111722210A (en) * | 2020-06-09 | 2020-09-29 | 上海工物高技术产业发展有限公司 | Human body size measuring device |
| CN112068126A (en) * | 2020-08-25 | 2020-12-11 | 电子科技大学 | Active millimeter wave imaging system for human body whole-body security inspection |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101630408B1 (en) * | 2014-12-05 | 2016-06-14 | 주식회사 이레테크 | Scanning system and method thereof |
| CN105759269B (en) * | 2016-04-25 | 2018-06-26 | 华讯方舟科技有限公司 | The safe examination system and method for 3D hologram imaging |
| CN105974486A (en) * | 2016-04-27 | 2016-09-28 | 华讯方舟科技有限公司 | Equipment of detecting articles in shoes |
| CN108152821A (en) * | 2018-01-23 | 2018-06-12 | 成都菲斯洛克电子技术有限公司 | A kind of active MMW imaging safety detecting system and safety detection method |
| CN112799041A (en) * | 2020-12-30 | 2021-05-14 | 上海工物高技术产业发展有限公司 | Imaging detection system and imaging detection method |
-
2020
- 2020-12-30 CN CN202011617463.4A patent/CN112799041A/en active Pending
-
2021
- 2021-11-26 WO PCT/CN2021/133473 patent/WO2022142915A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510911A (en) * | 2015-12-25 | 2016-04-20 | 深圳市太赫兹科技创新研究院 | Linear frequency modulation-based multi-human body safety inspection apparatus and method |
| CN110632593A (en) * | 2015-12-25 | 2019-12-31 | 华讯方舟科技有限公司 | Human body security check system and method based on millimeter wave holographic three-dimensional imaging |
| CN105607056A (en) * | 2015-12-28 | 2016-05-25 | 深圳市太赫兹科技创新研究院 | Human body security check system and method |
| CN106093937A (en) * | 2016-05-18 | 2016-11-09 | 中国电子科技集团公司第四十研究所 | A kind of microwave and millimeter wave human body security check system and safety inspection method |
| CN107340269A (en) * | 2017-06-27 | 2017-11-10 | 吉林大学 | The closely ultra wide band Terahertz 3-D imaging system and method for lossless detection |
| CN109031284A (en) * | 2018-08-31 | 2018-12-18 | 博微太赫兹信息科技有限公司 | It is a kind of using millimeter wave or the sole safety check apparatus and method of Terahertz radar |
| CN111722210A (en) * | 2020-06-09 | 2020-09-29 | 上海工物高技术产业发展有限公司 | Human body size measuring device |
| CN112068126A (en) * | 2020-08-25 | 2020-12-11 | 电子科技大学 | Active millimeter wave imaging system for human body whole-body security inspection |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022142915A1 (en) * | 2020-12-30 | 2022-07-07 | 上海工物高技术产业发展有限公司 | Imaging detection system and imaging detection method |
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|---|---|
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