WO2019227927A1 - 一种安检系统以及安检方法 - Google Patents
一种安检系统以及安检方法 Download PDFInfo
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- WO2019227927A1 WO2019227927A1 PCT/CN2018/125737 CN2018125737W WO2019227927A1 WO 2019227927 A1 WO2019227927 A1 WO 2019227927A1 CN 2018125737 W CN2018125737 W CN 2018125737W WO 2019227927 A1 WO2019227927 A1 WO 2019227927A1
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- security inspection
- inspection system
- main body
- body frame
- antenna arrays
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
Definitions
- the present application relates to the field of security inspection, and in particular, to a security inspection system and a security inspection method.
- the constitution of millimeter wave imaging is mainly divided into millimeter wave active imaging and millimeter wave passive imaging.
- the passive millimeter wave imaging system has a relatively simple structure and low implementation cost, but it has a long imaging time and low imaging resolution.
- active millimeter wave imaging active synthetic aperture imaging and active holographic imaging are the main imaging constitutions.
- the method of millimeter-wave holographic imaging is derived from the method of optical holography. Using the coherence principle of electromagnetic waves, the transmitter first transmits a highly stable millimeter-wave signal. The receiver receives the echo signal reflected by the target, and combines the echo signal with the height.
- the coherent reference signal is coherently processed to extract the amplitude and phase information of the echo signal, thereby obtaining a three-dimensional image of the target in the scene through data and image processing methods.
- the millimeter-wave image obtained by the millimeter-wave active holographic imaging has good resolution and short imaging time, and is particularly suitable for human security inspection systems.
- the current millimeter wave active three-dimensional holographic imaging human body security inspection system has two symmetrical rotating arms in order to shorten the scanning time. Two sets of switch antenna arrays are fixed on the rotating arms. The controller controls the rotating arms to rotate the two arms. The group switch antenna array is rotated and scanned to obtain the scanned image. Because the rotating arm is suspended on the side of the main body frame, when driving the rotating arm and stopping the rotating arm, it is necessary to provide a larger torque to overcome the inertia of the rotating arm. Therefore, the security inspection system is unstable during operation.
- the application provides a security inspection system and a security inspection method to solve the problem that the current security inspection system causes unstable system operation due to the setting of a rotating arm.
- the security inspection system includes: a main body frame, at least two groups of switch antenna arrays, a scan driver, a rotating disk, and a controller; at least two groups of switch antenna arrays are disposed on the main frame.
- the rotating disk is set on the bottom surface of the main frame; when the object to be inspected is on the rotating disk, the controller controls the rotating disk to rotate, and the scanning driver is used to drive at least two groups of switch antenna arrays, and at least two groups of switch antenna arrays are used for the object Scan to get the scanned image;
- the controller and the scanning driver are coupled, the controller obtains the current rate of the rotating disk, and obtains the scanning frequency of at least two groups of switch antenna arrays according to the current rate, and the scanning driver controls at least two groups of switch antenna arrays to scan the object to be inspected according to the scanning frequency;
- the main frame is provided with at least one opening, and the object to be inspected enters and exits the security inspection system through the opening.
- the security inspection system includes: a main body frame, at least two groups of switch antenna arrays, a scan driver, a rotating disk, and a controller; at least two groups of switch antenna arrays are disposed on the main frame.
- the rotating disk is set on the bottom surface of the main frame; when the object to be inspected is on the rotating disk, the controller controls the rotating disk to rotate, and the scanning driver is used to drive at least two groups of switch antenna arrays, and at least two groups of switch antenna arrays are used for the object Scan to get the scanned image.
- the present application also provides a security inspection method.
- the security inspection method is applied to a security inspection system.
- the security inspection system includes: a main frame, at least two groups of switch antenna arrays, a scan driver, a rotating disk and a controller, and at least two switches.
- the antenna array is disposed on the side of the main frame, and the rotating disk is disposed on the bottom surface of the main frame.
- the security inspection method includes: detecting whether the object to be inspected enters the main frame; if so, the controller controls the rotating disk to rotate, and the scan driver drives at least two sets of switches The antenna array is scanned.
- the security inspection system includes: a main body frame, at least two sets of switch antenna arrays, a scan driver, a rotating disk, and a controller; at least two sets of switch antenna arrays are provided on the side of the main frame, and the rotating disk is provided on the bottom surface of the main frame; After the object to be inspected enters the main frame, standing in the center of the rotating disk, the controller controls the rotating disk to rotate the object to be inspected within the main frame, instead of the method of switching the antenna array rotation, which can effectively avoid the rotation of the antenna array. Unstable factors such as shaking or moving; at least two sets of switch antenna arrays scan a rotating object to be scanned and obtain a scanned image; the use of the security inspection system can effectively improve system stability.
- FIG. 1 is a schematic structural diagram of a first embodiment of a security inspection system of the present application
- FIG. 2 is a schematic structural diagram of a detection area in FIG. 1;
- FIG. 3 is a schematic structural diagram of a second embodiment of a security inspection system of the present application.
- FIG. 4 is a schematic structural diagram of a third embodiment of a security inspection system of the present application.
- FIG. 5 is a schematic structural diagram of a switch antenna array in FIG. 4;
- FIG. 6 is a schematic structural diagram of a fourth embodiment of a security inspection system of the present application.
- FIG. 7 is a schematic structural diagram of a fifth embodiment of a security inspection system of the present application.
- FIG. 8 is a schematic flowchart of an embodiment of a security inspection method according to the present application.
- FIG. 9 is a schematic flowchart of another embodiment of a security inspection method according to the present application.
- FIG. 1 is a schematic structural diagram of a first embodiment of a security inspection system of the present application.
- the security inspection system of the present application is applied to millimeter-wave active three-dimensional holographic imaging, and is suitable for detecting a human body and detecting whether prohibited articles and dangerous articles are carried under or inside human body clothing.
- the security inspection system 100 disclosed in this embodiment includes a main body frame 11, at least two sets of switch antenna arrays 12, a scan driver 13, a rotating disk 14, and a controller 15.
- the switch antenna array 12 is disposed on the side of the main body frame 11, and the switch antenna array 12 is fixedly connected to the top surface and / or the bottom surface of the main body frame 11; the rotary disk 14 is disposed on the bottom surface of the main body frame 11, and the area of the rotary disk 14 is smaller than or Equal to the area of the bottom surface of the main body frame 11, the scanning driver 13 and the controller 15 are both disposed on the top surface of the main body frame 11. In other embodiments, the scan driver 13 and the controller 15 may also be disposed at other positions.
- the controller 15 is disposed on the bottom surface of the main body frame 11, which is not limited herein; the scan driver 13 is coupled to at least two sets of switch antenna arrays 12 Then, the controller 15 is coupled to the rotating disk 14.
- the rotating disk 14 is provided with a detection area. After the object to be inspected enters the main body frame 11 and stands in the detection area, the controller 15 controls the rotating disk 14 to rotate.
- the object to be inspected rotates at the rotation rate of the rotating disk 14 and the rotation of the rotating disk 14 The rate should be less than or equal to the comfortable rate of rotation of the object under test. Further, the controller 15 can adjust the rotation rate of the rotary disk 14 so that it is suitable for objects to be inspected in different age groups and objects to be inspected in special cases.
- the controller 15 is coupled to the scan driver 13.
- the controller 15 obtains the current speed of the rotary disk 14, obtains the scanning frequency of at least two groups of the switch antenna array 12 according to the obtained current speed of the rotary disk 14, and transmits the scan frequency to the scan driver. 13;
- the scanning driver 13 drives at least two sets of switch antenna arrays 12 according to the scanning frequency, and scans the rotating object to be scanned to obtain a scanned image.
- each rotation angle of the rotating disk 14 is 180 °, and scanning and imaging of each object to be inspected requires the rotating disk 14 to be rotated at least once; each rotation angle of the rotating disk 14 is 90 °, and each imaging object is scanned and imaged.
- the rotating disk 14 needs to be rotated at least twice.
- the rotating disc 14 can be driven by the gear to engage the rotating disc 14 to rotate, can also be driven by the transmission mechanism to drive the rotating disc 14 to rotate, can also directly input a rotational torque to drive the rotating disc 14 to rotate, etc., which is not limited herein.
- the security inspection system 100 further includes an outer ring 16 that is fixed to the bottom surface of the main body frame 11, and the outer ring 16 is disposed outside the rotating disk 14.
- the outer circumference of the outer ring 16 is less than or equal to the outer circumference of the main frame 11. long.
- the shape of the detection area may be a square area, or it may be a human foot shape design. As shown in FIG. 2, the detection area is designed in the shape of a human foot, which is advantageous for the object to be inspected to stand at the most center position of the rotating disk 14, so that the switch antenna array 12 on the side and the object to be measured are within a preset scanning distance. To get a clear scan image.
- At least two sets of the switch antenna array 12 are fixed on the side of the main body frame 11, and the switch antenna array 12 is fixedly connected to the outer ring 16.
- the switch antenna array 12 and the outer ring 16 are fixed on the main body frame. On 11, the switch antenna array 12 scans and images the rotating test object.
- the security inspection system 100 is provided with a rotating disk 14 on the bottom surface of the main body frame 11, and the switch antenna array 12 is fixed on the side of the main body frame 11.
- the rotating disk 14 is used to rotate the object to be inspected, and the switch antenna array 12 can be turned on and off. Scanning the object to be inspected for one week to obtain a scanned image; since the rotating object 14 is used to rotate the object to be inspected instead of rotating the switch antenna array 12, the shaking or displacement caused by the rotation of the switch antenna array 12 can be avoided And other unstable factors, therefore, the use of the security inspection system 100 can effectively improve system stability.
- FIG. 3 is a schematic structural diagram of a second embodiment of a security inspection system of the present application.
- the security inspection system 100 disclosed in this embodiment includes a main body frame 11, at least two sets of switch antenna arrays 12, a scanning driver 13, a rotating disk 14, and a controller 15.
- the structure, setting method, function, etc. of the main body frame 11, at least two groups of switch antenna array 12, scan driver 13, rotary disk 14, and controller 15 are similar to the structure, setting method, function, etc. of the first embodiment described above. This is not repeated here.
- the controller 15 can control the rotation of the rotary disk 14, and also can control the rotation of at least two groups of the switch antenna array 12, and the rotation direction of the at least two groups of the switch antenna array 12 is opposite to the rotation direction of the rotary disk.
- the controller 15 obtains the current rate of the rotating disk 14 and the current rate of the switching antenna array 12, obtains at least two sets of scanning frequencies of the switching antenna array 12 according to the current rate of the rotating disk 14 and the current rate of the switching antenna array 12, and then sets the scanning frequency It is transmitted to the scanning driver 13; the scanning driver 13 drives at least two sets of switch antenna arrays 12 according to the scanning frequency, and scans the rotating object to be scanned to obtain a scanned image.
- the relative speed of the rotating disk 14 to the switching antenna array 12 should correspond to the scanning frequency, and the relative speed of the rotating disk 14 to the switching antenna array 12 depends on the rotating speed of the rotating disk 14 and the rotating speed of the switching antenna array 12.
- the controller 15 is used to adjust the rotation rate of the rotating disk 14 and the switching antenna array 12 so that the relative speed of the rotating disk 14 to the switching antenna array 12 can be stabilized, so that the switching antenna array 12 can scan the object to be inspected and obtain a scan. image.
- the controller 15 controls when adjusting the rotation rate of the rotary disk 14 and the rotation rate of the switch antenna array 12.
- the rotation rate of the rotary disk 14 is as large as possible, and the rotation rate of the switch antenna array 12 is as small as possible.
- the staff can adjust the rotation rate of the rotary disk 14 through the controller 15 outside the main body frame 11 to make it suitable for objects to be inspected in different age groups and those with special circumstances.
- the object to be inspected At this time, the controller 15 adjusts the rotation rate of the switch antenna array 12 according to the rotation rate of the rotating disk 14 so that the security inspection system 100 can obtain a complete scanned image.
- the security inspection system 100 further includes a sensor 17 disposed on the rotating disk 14.
- the sensor 17 is used to detect whether the object to be inspected is on the rotating disk 14 and transmits the detection result to the controller 15.
- the controller 15 controls the rotation according to the detection result.
- the tray 14 works.
- the controller 15 controls the rotation of the rotary disc 14 and the switch antenna array 12; when the sensor 17 does not detect that the object to be inspected is on the rotating disc 14, the controller 15 controls The rotary disk 14 and the switch antenna array 12 are in a standby state.
- the sensor 17 may include a pressure sensor, an infrared sensor, a temperature sensor, and the like.
- the security inspection system 100 further includes at least one opening 18 provided on a side of the main body frame 11.
- the object to be inspected enters and exits the main body frame 11 through the opening 18.
- the sensor 17 may be disposed on the opening 18.
- the controller 15 controls the rotating disk 14 and the switch antenna array 12 to rotate after a preset time, and the preset time is 3s.
- the security inspection system 100 is provided with a rotating disk 14 on the bottom surface of the main body frame 11, and the switch antenna array 12 is provided on the side of the main body frame 11.
- the rotating object 14 is used to drive the object to be inspected while the antenna array 12 is switched on and off.
- the switch antenna array 12 can scan the object to be scanned once, thereby obtaining a scanned image; since the rotation of the switch object with the rotation of the switch antenna array 12 by using the rotary disk 14 can reduce the rotation of the switch antenna array 12 Rate, reducing unstable factors such as shaking or shifting caused by the rotation of the switch antenna array 12, so using the security inspection system 100 can effectively improve system stability.
- FIG. 4 is a schematic structural diagram of a third embodiment of a security inspection system of the present application.
- the security inspection system 200 disclosed in this embodiment includes a main body frame 21, at least two sets of switch antenna arrays 22, a scan driver 23, and a sensor 24.
- the sensor 24 includes an infrared sensor, a temperature sensor, an ultrasonic sensor, and the like. Among them, a sensor 24 and at least two sets of switch antenna arrays 22 are disposed on the side of the main body frame 21, and the sensor 24 is coupled to the scanning driver 23. When the object to be inspected is within the main body frame 21, the sensor 24 is used to detect the object to be inspected, and Obtain the height information of the object to be inspected, and transmit the height information to the scanning driver 23.
- the scanning driver 23 drives at least two groups of the switch antenna array 22 according to the height information, and at least two groups of the switch antenna array 22 are used to scan the object to be inspected and obtain a scan. image.
- each switching antenna 221 includes a transmitting antenna and a receiving antenna, and the transmitting antenna transmits millimeter waves Signal, the millimeter wave signal propagates to the obstruction, including the human body and returns, and the millimeter wave signal is received by the receiving antenna.
- the sensor 24 is used to detect the height of the object to be inspected, obtain the first height information of the object to be inspected, and transmit the first height information to the scanning driver 23; the scanning driver 23 is based on the first height information Drive at least two sets of switch antenna arrays 22.
- the scan driver 23 turns on the switch antenna 221 located within the first height information range, and the switch antenna 221 located outside the first height information range stops working, and the detection range of the opened switch antenna 221 completely covers the object to be detected, thereby ensuring that The accuracy and completeness of the scan imaging results.
- the security inspection system 200 is provided with a sensor 24 on the side of the main body frame 21.
- the sensor 24 detects the height of the object to be inspected, obtains first height information, and sends the first height information to the scan driver 23, and the scan driver 23
- a height information turns on the switch antenna 221 located within the first height information range, and the switch antenna 221 outside the first height information range stops working, which can save power consumption and effectively extend the service life of the switch antenna 221.
- FIG. 6 is a schematic structural diagram of a fourth embodiment of a security inspection system of the present application.
- the security inspection system 200 disclosed in this embodiment includes a main body frame 21, at least two sets of switch antenna arrays 22, a scan driver 23, and a sensor 24.
- the structure, setting method, function, etc. of the main body frame 21, at least two sets of switch antenna array 22, scan driver 23, and sensor 24 are similar to the structure, setting method, function, etc. of the third embodiment described above, and will not be repeated here. .
- the switch antenna array 22 has a plurality of switch antennas 221, and each switch antenna 221 is controlled by an independent switch without affecting each other.
- Each switching antenna 221 includes a transmitting antenna and a receiving antenna. The transmitting antenna transmits a millimeter wave signal, the millimeter wave signal propagates to the shield and returns, and the millimeter wave signal is received by the receiving antenna.
- the sensor 24 After the object to be inspected enters the body frame 21, the sensor 24 detects the height information from the top surface of the body frame 21 to the object to be measured, that is, the sensor 24 obtains the second height information and transmits the second height information to the scan driver 23, the scan driver 23 Drive at least two sets of switch antenna arrays 22 based on the second height information.
- the scan driver 23 turns on the switch antenna 221 located outside the second height range, and the switch antenna 221 located within the second height range stops working, thereby ensuring that the object to be inspected is located within the signal coverage range of the opened switch antenna 221, and further Guarantee the accuracy and completeness of the scan imaging results.
- the security inspection system 200 further includes at least one opening 25.
- the opening 25 is disposed on the side of the main body frame 21, and the object to be inspected performs the security inspection system through the opening 25.
- the sensor 24 is disposed on the side of the main body frame 21. Specifically, the sensor 24 is disposed on at least two sets of switch antenna arrays 22. After the object to be inspected enters the main body frame 21, the sensor 24 detects height information of the object to be inspected; in other embodiments In the embodiment, the sensor 24 may be disposed on the side of the opening 25. When the object to be inspected enters the main body frame 21, the sensor 24 detects height information of the object to be inspected.
- the security inspection system 200 further includes a controller 26 and a sensor 27.
- the controller 26 is disposed on the top surface of the main body frame 21, and the sensor 27 is disposed on the bottom surface of the main body frame 21.
- the controller 26 can control at least two groups of switch antenna arrays 22 to rotate.
- the sensor 27 detects whether the object to be inspected is in the main body frame 21 and transmits the detection result to the controller 26; if it is detected that the object to be inspected is in the main body frame 21, the controller 26 controls the switch antenna array 22 and the sensor 24 to enter a working state If it is detected that the object to be inspected is not in the main body frame 21, the controller 26 controls the switch antenna array 22 and the sensor 24 to stop working.
- the object to be inspected enters the main frame 21, and the sensor 27 detects whether the object to be inspected has entered the detection area in the main frame 21.
- the controller 26 may control the sensor 24 to enter the working state, and the sensor 24 detects the object to be inspected.
- the height information of the inspection object is transmitted to the drive scanner 23 to turn on a part of the switch antenna 221 corresponding to the height information; the controller 26 may also control the switch antenna array 22 to rotate, and perform a rotation scanning imaging on the inspection object.
- the security inspection system 200 is provided with a sensor 24 on the side of the main body frame 21.
- the sensor 24 detects the height of the top surface of the main body frame 21 to the object to be measured, obtains the second height information, and transmits the second height information to the scan driver 23.
- the scan driver 23 turns on part of the switching antenna 221 according to the second height information, reduces unnecessary switching antenna 221, can save power consumption, and effectively prolong the service life of the switching antenna 221.
- FIG. 7 is a schematic structural diagram of a fifth embodiment of a security inspection system of the present application.
- the security inspection system 300 disclosed in this embodiment includes a main body frame 31, a switch antenna array 32, a drive scanner 33, a sensor 34, a rotating disk 35, and a controller 36.
- the structure, setting manner, function, etc. of the main body frame 31, the switch antenna array 32, the drive scanner 33, the sensor 34, the rotary disk 35, and the controller 36 are all the same as those of the first embodiment, the second embodiment, the third embodiment, and the implementation
- the structure, setting method, and function of Example 4 are similar, and will not be repeated here.
- the controller 36 controls the rotation of the rotation disk 35, and the object to be inspected rotates at the rotation rate of the rotation disk 35; the controller 36 is coupled to the scan driver 33, and the controller 36 obtains the current speed of the rotation disk 35, according to the obtained rotation disk 35
- the current rate of at least two scanning antenna arrays 32 is obtained, and then the scanning frequency is transmitted to the scanning driver 33; the scanning driver 33 drives at least two groups of switching antenna arrays 32 according to the scanning frequency, and scans the rotating object to be inspected to obtain Scan the image.
- the controller 36 also controls the operation of the sensor 34.
- the sensor 34 detects the object to be inspected, obtains the height information of the object to be inspected, and transmits the height information to the scanning driver 33.
- the scanning driver 33 drives at least two sets of switch antennas according to the height information.
- Array 32, at least two sets of switch antenna arrays 32 are used to scan an object to be inspected to obtain a scanned image.
- the security inspection system 300 is provided with a rotating disk 35 on the bottom surface of the main body frame 31, and the switch antenna array 32 is provided on the side of the main body frame 31.
- the rotating disk 35 is used to rotate the object to be inspected, and the switch antenna array 32 is to be inspected.
- the object is scanned to obtain a scanned image. Since the rotating disk 35 is used to rotate the object to be inspected, it replaces the switching antenna array 32 rotation, which can avoid unstable factors such as shaking or displacement caused by the switching antenna array 32 rotation. Therefore, using the security inspection system 300 can effectively improve system stability; the security inspection system 300 is also provided with a sensor 34 on the side of the main body frame 31.
- the sensor 34 detects the height of the object to be inspected, obtains height information, and sends the height information to the scan driver. 33.
- the scanning driver 33 drives the switch antenna array 32 of the corresponding area according to the height information, which can save power consumption and effectively extend the service life of the switch antenna array 32.
- FIG. 8 is a schematic flowchart of an embodiment of the security inspection method of the present application.
- the security inspection method is applied to a security inspection system 100.
- the security inspection system 100 includes: a main body frame 11, at least two groups of switch antenna arrays 12, a scan driver 13, a rotary disk 14, and a controller 15, and at least two groups of switch antenna arrays 12 are disposed on the main body.
- the rotating disk 14 is disposed on the bottom surface of the main body frame 11.
- the specific structure of the security inspection system 100 can be seen in FIGS. 1 to 3.
- Step S402 further includes: the controller 15 controls at least two groups of the switch antenna array 12 and the rotary disk 14 to rotate, the rotation direction of the at least two groups of the switch antenna array 12 is opposite to the rotation direction of the rotary disk 14, and the scan driver 13 drives at least two groups The switch antenna array 12 scans the object to be inspected.
- FIG. 9 is a schematic flowchart of another embodiment of the security inspection method of the present application.
- the security inspection method is applied to a security inspection system 200.
- the security inspection system 200 includes: a main body frame 21, at least two sets of switch antenna arrays 22, sensors 24, and scan drivers 23; at least two sets of switch antenna arrays 22 are disposed on the side of the main body frame 21,
- the sensor 24 is disposed on the side of the main body frame 21, and the sensor 24 is coupled to the scanning driver 23.
- FIGS. 4 to 6 For a specific structure of the security inspection system, refer to FIGS. 4 to 6.
- the scanning driver drives at least two groups of switch antenna arrays to scan the object to be inspected to obtain a scanned image.
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Abstract
一种安检系统(100，200，300)以及安检方法。安检系统(100，200，300)包括：主体框架（11，21，31）、至少两组开关天线阵列（12，22，32）、扫描驱动器（13，23，33）、旋转盘（14，35）和控制器（15，26，36）；至少两组开关天线阵列（12，22，32）设置在主体框架（11，21，31）的侧面，旋转盘（14，35）设置在主体框架（11，21，31）的底面；当待检对象在旋转盘（14，35）上，控制器（15，26，36）控制旋转盘（14，35）旋转，扫描驱动器（13，23，33）用于驱动至少两组开关天线阵列（12，22，32），至少两组开关天线阵列（12，22，32）用于对待检对象进行扫描，得到扫描图像。安检系统(100，200，300)通过控制旋转盘（14，35），带动待检对象旋转，以使开关天线阵列（12，22，32）扫描待检对象，能够有效提高系统稳定性。
Description
本申请涉及安检领域，具体涉及一种安检系统以及安检方法。
毫米波成像体质主要分为毫米波主动成像和毫米波被动成像。被动毫米波成像系统结构比较简单，实现成本也较低，但成像时间长，成像分辨率较低。主动式毫米波成像相同中，主动合成孔径成像和主动全息成像是主要的成像体质。毫米波全息成像的方法是源于光学全息的方法，利用电磁波的相干原理，首先发射机要发射高稳定的毫米波信号，接收机接收目标反射回来的回波信号，并将回波信号与高度相干的参考信号进行相干处理，提取出回波信号的幅度和相位信息，从而通过数据和图像处理的方法得到场景中目标的三维图像。毫米波主动全息成像得到的毫米波图像分辨率好，成像时间短，特别适用于人体安检系统。
目前的毫米波主动式三维全息成像的人体安检系统，为了缩短扫描时间，设置了两个对称的转动臂，两组开关天线阵列固定在转动臂上，通过控制器控制转动臂旋转，以使两组开关天线阵列对待检对象进行旋转扫描，得到扫描图像。由于转动臂悬空在主体框架的侧面，在驱动转动臂转动和停止转动臂转动时，都需要提供更大的力矩克服转动臂的惯性，因此，导致安检系统在工作时不稳定。
【发明内容】
本申请提供一种安检系统以及安检方法，以解决目前的安检系统由于转动臂的设置，导致系统运行不稳定的问题。
为解决上述技术问题，本申请提供了一种安检系统，该安检系统包括：主体框架、至少两组开关天线阵列、扫描驱动器、旋转盘和控制器；至少两组开 关天线阵列设置在主体框架的侧面，旋转盘设置在主体框架的底面；当待检对象在旋转盘上，控制器控制旋转盘旋转，扫描驱动器用于驱动至少两组开关天线阵列，至少两组开关天线阵列用于对待检对象进行扫描，得到扫描图像；
控制器和扫描驱动器耦接，控制器获取旋转盘的当前速率，并根据当前速率获取至少两组开关天线阵列的扫描频率，扫描驱动器根据扫描频率控制至少两组开关天线阵列对待检对象进行扫描；
主体框架至少设置一个开口，待检对象通过开口进出安检系统。
为解决上述技术问题，本申请提供了一种安检系统，该安检系统包括：主体框架、至少两组开关天线阵列、扫描驱动器、旋转盘和控制器；至少两组开关天线阵列设置在主体框架的侧面，旋转盘设置在主体框架的底面；当待检对象在旋转盘上，控制器控制旋转盘旋转，扫描驱动器用于驱动至少两组开关天线阵列，至少两组开关天线阵列用于对待检对象进行扫描，得到扫描图像。
为解决上述技术问题，本申请还提供了一种安检方法，安检方法应用于安检系统，安检系统包括：主体框架、至少两组开关天线阵列、扫描驱动器、旋转盘和控制器，至少两组开关天线阵列设置在主体框架的侧面，旋转盘设置在主体框架的底面；该安检方法包括：检测待检对象是否进入主体框架内；若是，则控制器控制旋转盘旋转，扫描驱动器驱动至少两组开关天线阵列对待检对象进行扫描。
在本申请中，安检系统包括：主体框架、至少两组开关天线阵列、扫描驱动器、旋转盘和控制器；至少两组开关天线阵列设置在主体框架的侧面，旋转盘设置在主体框架的底面；待检对象进入主体框架后，站在旋转盘中央，控制器控制旋转盘转动，使得待检对象在主体框架内旋转，代替了开关天线阵列旋转的方法，可以有效避免开关天线阵列旋转所带来的晃动或移动等不稳定因素；至少两组开关天线阵列对旋转的待检对象进行扫描，并得到扫描图像；采用该安检系统能够有效提高系统稳定性。
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。其中：
图1是本申请安检系统实施例一的结构示意图；
图2是图1中检测区域的结构示意图；
图3是本申请安检系统实施例二的结构示意图；
图4是本申请安检系统实施例三的结构示意图；
图5是图4中开关天线阵列的结构示意图；
图6是本申请安检系统实施例四的结构示意图；
图7是本申请安检系统实施例五的结构示意图；
图8是本申请安检方法一实施例的流程示意图；
图9是本申请安检方法另一实施例的流程示意图。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。可以理解的是，此处所描述的具体实施例仅用于解释本申请，而非对本申请的限定。另外还需要说明的是，为了便于描述，附图中仅示出了与本申请相关的部分而非全部结构。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
请参见图1～图2，图1是本申请安检系统实施例一的结构示意图。本申请安检系统应用于毫米波主动式三维全息成像，适用于对人体进行检测，检测人体衣物下或体内是否携带违禁物品和危险物品。
如图1所示，本实施例所揭示的安检系统100包括主体框架11、至少两组开关天线阵列12、扫描驱动器13、旋转盘14和控制器15。
其中，开关天线阵列12设置在主体框架11的侧面，开关天线阵列12与主体框架11的顶面和/或底面固定连接；旋转盘14设置在主体框架11的底面，旋转盘14的面积小于或等于主体框架11的底面面积，扫描驱动器13和控制器15均设置在主体框架11的顶面。在其他实施例中，扫描驱动器13和控制器15也可以设置在其他位置，例如，控制器15设置在主体框架11的底面，在此不作限定；扫描驱动器13与至少两组开关天线阵列12耦接，控制器15与旋转盘14耦接。
旋转盘14上设置有检测区域，待检对象进入主体框架11后，站立在检测区域内，控制器15控制旋转盘14旋转，待检对象以旋转盘14的旋转速率旋转，旋转盘14的旋转速率应当小于或等于待测对象旋转的舒适速率。进一步地，控制器15可以调整旋转盘14的旋转速率，使其适用于不同年龄层的待检对象和有特殊情况的待检对象。
控制器15与扫描驱动器13耦接，控制器15获取旋转盘14的当前速率，根据获取的旋转盘14的当前速率获取至少两组开关天线阵列12的扫描频率，再将扫描频率传输到扫描驱动器13；扫描驱动器13根据扫描频率驱动至少两组开关天线阵列12，对旋转的待检对象进行扫描，得到扫描图像。
其中，旋转盘14每次旋转角度为180°，对每位待检对象进行扫描成像需要旋转盘14至少旋转一次；旋转盘14每次旋转角度为90°，对每位待检对象进行扫描成像需要旋转盘14至少旋转两次。旋转盘14可以为通过齿轮咬合的方式带动旋转盘14转动，也可以通过传动机构的方式带动旋转盘14转动，还可以直接输入转动力矩带动旋转盘14转动等等，在此不作限定。
其中，安检系统100还包括外环16，外环16固定在主体框架11的底面，且外环16设置在旋转盘14的外侧，外环16的外圆周长小于或等于主体框架11的外圆周长。外环16的面积越大，旋转盘14的面积就越小，因此，本实施例的外环16的面积尽可能大，使得旋转盘14除了检测区域外的面积尽可能小，就可以减少转动旋转盘14所需要的能量。
其中，检测区域的形状可以是方形区域，也可以是仿人脚形状设计等等。如图2所示，检测区域采用仿人脚形状设计，有利于待检对象站立在旋转盘14的最中心位置，以使侧面的开关天线阵列12与待测对象之间在预设扫描距离内，得到清晰的扫描成像。
至少两组开关天线阵列12固定在主体框架11的侧面，且开关天线阵列12与外环16固定连接；在旋转盘14带动待测对象旋转时，开关天线阵列12和外环16固定在主体框架11上，开关天线阵列12对旋转的待测对象进行扫描成像。
在本实施例中，安检系统100在主体框架11的底面设置了旋转盘14，将开关天线阵列12固定在主体框架11的侧面，利用旋转盘14带动待检对象旋转，开关天线阵列12就可以扫描待检对象的一周，从而得到扫描图像；由于采用旋转盘14带动待检对象旋转的方式，代替了开关天线阵列12旋转的方式，可以避免开关天线阵列12旋转所带来的晃动或移位等不稳定因素，因此，采用该安检系统100能够有效提高系统稳定性。
请参见图3，图3是本申请安检系统实施例二的结构示意图。如图3所示，本实施例所揭示的安检系统100包括主体框架11、至少两组开关天线阵列12、扫描驱动器13、旋转盘14和控制器15。
其中，主体框架11、至少两组开关天线阵列12、扫描驱动器13、旋转盘14和控制器15的结构、设置方式、作用等均与上述实施例一的结构、设置方式、作用等相似，在此不再赘述。
其中，控制器15可以控制旋转盘14旋转，也可以控制至少两组开关天线阵列12旋转，且至少两组开关天线阵列12的旋转方向与旋转盘的旋转方向相反。
控制器15获取旋转盘14的当前速率和开关天线阵列12的当前速率，根据旋转盘14的当前速率和开关天线阵列12的当前速率获取至少两组开关天线阵列12的扫描频率，再将扫描频率传输到扫描驱动器13；扫描驱动器13根据扫描频率驱动至少两组开关天线阵列12，对旋转的待检对象进行扫描，得到扫描 图像。
其中，旋转盘14对于开关天线阵列12的相对速率应当与扫描频率对应，而旋转盘14对于开关天线阵列12的相对速率的大小取决于旋转盘14的旋转速率和开关天线阵列12的旋转速率。控制器15用于调节旋转盘14的旋转速率和开关天线阵列12的旋转速率，使得旋转盘14对于开关天线阵列12的相对速率能够稳定，以使开关天线阵列12能够扫描待检对象，得到扫描图像。
由上述描述可知，当开关天线阵列12的旋转速率越大，安检系统的稳定性就会越差，因此，控制器15在调节旋转盘14的旋转速率和开关天线阵列12的旋转速率时，控制旋转盘14的旋转速率尽可能大，开关天线阵列12的旋转速率尽可能小。
进一步地，在检测不同年龄段的待检对象时，工作人员可以在主体框架11外通过控制器15调节旋转盘14的旋转速率，使其适用于不同年龄层的待检对象和有特殊情况的待检对象，此时，控制器15根据旋转盘14的旋转速率调整开关天线阵列12的旋转速率，使安检系统100能够得到一个完整的扫描图像。
安检系统100还包括传感器17，传感器17设置在旋转盘14上，传感器17用于检测待检对象是否在旋转盘14上，并将检测结果传送到控制器15，控制器15根据检测结果控制旋转盘14工作。
具体地，当传感器17检测到待检对象在旋转盘14上，控制器15控制旋转盘14和开关天线阵列12旋转；当传感器17未检测到待检对象在旋转盘14上，控制器15控制旋转盘14和开关天线阵列12处于待机状态。传感器17可以包括压力传感器、红外传感器和温度传感器等等。
安检系统100还包括至少一个开口18，开口18设置在主体框架11的侧面。待检对象通过开口18进出主体框架11。在其他实施例中，传感器17也可以设置在开口18上。当传感器18检测到待检对象通过开口18，经过预设时间后，控制器15控制旋转盘14和开关天线阵列12旋转，预设时间为3s。
在本实施例中，安检系统100在主体框架11的底面设置了旋转盘14，将开 关天线阵列12设置在主体框架11的侧面，利用旋转盘14带动待检对象旋转，同时开关天线阵列12以相反方向旋转，开关天线阵列12就可以扫描待检对象的一周，从而得到扫描图像；由于采用旋转盘14带动待检对象旋转结合开关天线阵列12旋转的方式，可以减小开关天线阵列12的旋转速率，减小开关天线阵列12旋转所带来的晃动或移位等不稳定因素，因此，采用该安检系统100能够有效提高系统稳定性。
请参见图4～5，图4是本申请安检系统实施例三的结构示意图。如图4所示，本实施例所揭示的安检系统200包括主体框架21、至少两组开关天线阵列22、扫描驱动器23、传感器24。
传感器24包括红外传感器、温度传感器和超声波传感器等。其中，传感器24和至少两组开关天线阵列22设置在主体框架21的侧面，传感器24与扫描驱动器23耦接；当待检对象在主体框架21内，传感器24用于检测待检对象，用于获取待检对象的高度信息，并将高度信息传输到扫描驱动器23，扫描驱动器23根据高度信息驱动至少两组开关天线阵列22，至少两组开关天线阵列22用于对待检对象进行扫描，得到扫描图像。
如图5所示，开关天线阵列22上有多个开关天线221，每个开关天线221由独立的开关控制，互不影响；每个开关天线221包括发射天线和接收天线，发射天线发射毫米波信号，毫米波信号传播到遮挡物，包括人体后返回，由接收天线接收毫米波信号。
待检对象进入主体框架21后，传感器24用于检测待检对象的高度，获取待测对象的第一高度信息，并将第一高度信息传输到扫描驱动器23；扫描驱动器23根据第一高度信息驱动至少两组开关天线阵列22。
具体地，扫描驱动器23开启位于第一高度信息范围内的开关天线221，位于第一高度信息范围外的开关天线221停止工作，以开启的开关天线221的检测范围完全覆盖待检测对象，进而保证扫描成像结果的准确性和完整性。
在本实施例中，安检系统200在主体框架21的侧面设置传感器24，传感器 24检测待检对象的高度，得到第一高度信息，并发送第一高度信息给扫描驱动器23，扫描驱动器23根据第一高度信息开启位于第一高度信息范围内的开关天线221，位于第一高度信息范围外的开关天线221停止工作，可以节省功耗，有效延长开关天线221的使用寿命。
请参见图6，图6是本申请安检系统实施例四的结构示意图。如图6所示，本实施例所揭示的安检系统200包括主体框架21、至少两组开关天线阵列22、扫描驱动器23、传感器24。
其中，主体框架21、至少两组开关天线阵列22、扫描驱动器23、和传感器24的结构、设置方式、作用等均与上述实施例三的结构、设置方式、作用等相似，在此不再赘述。
其中，如图5所示，开关天线阵列22上有多个开关天线221，每个开关天线221由独立的开关控制，互不影响。每个开关天线221包括发射天线和接收天线，发射天线发射毫米波信号，毫米波信号传播到遮挡物后返回，由接收天线接收毫米波信号。
待检对象进入主体框架21后，传感器24检测主体框架21的顶面到待测对象的高度信息，即传感器24获取第二高度信息，并将第二高度信息传输给扫描驱动器23，扫描驱动器23根据第二高度信息驱动至少两组开关天线阵列22。
具体地，扫描驱动器23开启位于第二高度范围外的开关天线221，位于第二高度范围内的开关天线221停止工作，进而保证待检对象位于在开启的开关天线221的信号覆盖范围内，进而保证扫描成像结果的准确性和完整性。
安检系统200还包括至少一个开口25，开口25设置在主体框架21的侧面，待检对象通过开口25进行安检系统。传感器24设置在主体框架21的侧面，具体地，传感器24设置在至少两组开关天线阵列22上，在待检对象进入主体框架21后，传感器24检测待检对象的高度信息；在其他实施例中，传感器24也可以设置在开口25的侧面，在待检对象进入主体框架21时，传感器24检测待检对象的高度信息。
安检系统200还包括控制器26和感应器27，控制器26设置在主体框架21的顶面，感应器27设置在主体框架21的底面；控制器26可以控制至少两组开关天线阵列22旋转，感应器27检测待检对象是否在主体框架21内，并将检测结果传送到控制器26；若检测到待检对象在主体框架21内，控制器26控制开关天线阵列22和传感器24进入工作状态；若检测到待检对象不在主体框架21内，控制器26控制开关天线阵列22和传感器24停止工作。
具体地，待检对象进入主体框架21，感应器27检测待检对象是否已经进入主体框架21中的检测区域；检测结果为是时，控制器26可以控制传感器24进入工作状态，传感器24检测待检对象的高度信息，并将高度信息传输到驱动扫描器23开启与高度信息对应的部分开关天线221；控制器26也可以控制开关天线阵列22旋转，对待检对象进行旋转扫描成像。
在本实施例中，安检系统200在主体框架21的侧面设置传感器24，传感器24检测主体框架21的顶面到待测对象的高度，得到第二高度信息，并传输到扫描驱动器23，在保证扫描成像结果的准确性和完整性的前提下，扫描驱动器23根据第二高度信息开启部分开关天线221，减少不必要的开关天线221，可以节省功耗，有效延长开关天线221的使用寿命。
请参见图7，图7是本申请安检系统实施例五的结构示意图。如图7所示，本实施例所揭示的安检系统300包括主体框架31、开关天线阵列32、驱动扫描器33、传感器34、旋转盘35和控制器36。
其中，主体框架31、开关天线阵列32、驱动扫描器33、传感器34、旋转盘35和控制器36的结构、设置方式、作用等均与上述实施例一、实施例二、实施例三和实施例四的结构、设置方式、作用等相似，在此不再赘述。
其中，控制器36控制旋转盘35旋转，待检对象以旋转盘35的旋转速率旋转；控制器36与扫描驱动器33耦接，控制器36获取旋转盘35的当前速率，根据获取的旋转盘35的当前速率获取至少两组开关天线阵列32的扫描频率，再将扫描频率传输到扫描驱动器33；扫描驱动器33根据扫描频率驱动至少两组 开关天线阵列32，对旋转的待检对象进行扫描，得到扫描图像。
其中，控制器36也控制传感器34工作，传感器34检测待检对象，用于获取待检对象的高度信息，并将高度信息传输到扫描驱动器33，扫描驱动器33根据高度信息驱动至少两组开关天线阵列32，至少两组开关天线阵列32用于对待检对象进行扫描，得到扫描图像。
在本实施例中，安检系统300在主体框架31的底面设置了旋转盘35，将开关天线阵列32设置在主体框架31的侧面，利用旋转盘35带动待检对象旋转，开关天线阵列32对待检对象进行扫描，得到扫描图像，由于采用旋转盘35带动待检对象旋转的方式，代替了开关天线阵列32旋转的方式，可以避免开关天线阵列32旋转所带来的晃动或移位等不稳定因素，因此，采用该安检系统300能够有效提高系统稳定性；安检系统300还在主体框架31的侧面设置了传感器34，传感器34检测待检对象的高度，得到高度信息，并发送高度信息给扫描驱动器33，扫描驱动器33根据高度信息驱动对应区域的开关天线阵列32，可以节省功耗，有效延长开关天线阵列32的使用寿命。
本申请还提供了一种安检方法，如图8所示，图8是本申请安检方法一实施例的流程示意图。其中，该安检方法应用于安检系统100，安检系统100包括：主体框架11、至少两组开关天线阵列12、扫描驱动器13、旋转盘14和控制器15，至少两组开关天线阵列12设置在主体框架11的侧面，旋转盘14设置在主体框架11的底面，安检系统100的具体结构可以参见图1～3。
本实施例所揭示的安检方法包括：
S401：检测待检对象是否进入主体框架内。
S402：若是，则控制器控制旋转盘旋转，扫描驱动器驱动至少两组开关天线阵列对待检对象进行扫描。
其中，步骤S402还包括：控制器15控制至少两组开关天线阵列12和旋转盘14旋转，至少两组开关天线阵列12的旋转方向与旋转盘14的旋转方向相反，扫描驱动器13驱动至少两组开关天线阵列12对待检对象进行扫描。
本申请还提供了另一种安检方法，如图9所示，图9是本申请安检方法另一实施例的流程示意图。其中，该安检方法应用于安检系统200，安检系统200包括：主体框架21、至少两组开关天线阵列22、传感器24、扫描驱动器23；至少两组开关天线阵列22设置在主体框架21的侧面，传感器24设置在主体框架21的侧面，且传感器24与扫描驱动器23耦接，安检系统的具体结构可以参见图4～6。
本实施例所揭示的安检方法包括：
S401：检测待检对象是否进入主体框架内。
S402：若是，则传感器检测待检对象的高度信息，并将高度信息传输到扫描驱动器。
S403：根据高度信息，扫描驱动器驱动至少两组开关天线阵列对待检对象进行扫描，得到扫描图像。
以上对本申请实施例所提供的安检系统和安检方法进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的一般技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。
Claims (16)
- 一种安检系统，其特征在于，所述安检系统包括：主体框架、至少两组开关天线阵列、扫描驱动器、旋转盘和控制器；所述至少两组开关天线阵列设置在所述主体框架的侧面，所述旋转盘设置在所述主体框架的底面；当待检对象在所述旋转盘上，所述控制器控制所述旋转盘旋转，所述扫描驱动器用于驱动所述至少两组开关天线阵列，所述至少两组开关天线阵列用于对所述待检对象进行扫描，得到扫描图像；所述控制器和所述扫描驱动器耦接，所述控制器获取所述旋转盘的当前速率，并根据所述当前速率获取所述至少两组开关天线阵列的扫描频率，所述扫描驱动器根据所述扫描频率控制所述至少两组开关天线阵列对所述待检对象进行扫描；所述主体框架至少设置一个开口，所述待检对象通过所述开口进出所述安检系统。
- 根据权利要求1所述的安检系统，其特征在于，所述扫描驱动器和所述控制器设置在所述主体框架的顶面。
- 根据权利要求2所述的安检系统，其特征在于，所述安检系统还包括外环，所述外环设置在所述旋转盘的外侧，且固定在所述主体框架的底面。
- 根据权利要求3所述的安检系统，其特征在于，所述至少两组开关天线阵列固定在所述主体框架的侧面，且与所述外环固定连接。
- 根据权利要求3所述的安检系统，其特征在于，所述控制器控制所述至少两组开关天线阵列旋转，所述至少两组开关天线阵列的旋转方向与所述旋转盘的旋转方向相反。
- 根据权利要求1所述的安检系统，其特征在于，所述安检系统还包括传感器，所述传感器设置在所述旋转盘上，所述传感器用于检测所述待检对象是否在所述旋转盘上，并将检测结果传送到所述控制器，所述控制器根据所述检测结果控制所述旋转盘工作。
- 一种安检系统，其特征在于，所述安检系统包括：主体框架、至少两组开关天线阵列、扫描驱动器、旋转盘和控制器；所述至少两组开关天线阵列设置在所述主体框架的侧面，所述旋转盘设置在所述主体框架的底面；当待检对象在所述旋转盘上，所述控制器控制所述旋转盘旋转，所述扫描驱动器用于驱动所述至少两组开关天线阵列，所述至少两组开关天线阵列用于对所述待检对象进行扫描，得到扫描图像。
- 根据权利要求7所述的安检系统，其特征在于，所述控制器和所述扫描驱动器耦接，所述控制器获取所述旋转盘的当前速率，并根据所述当前速率获取所述至少两组开关天线阵列的扫描频率，所述扫描驱动器根据所述扫描频率控制所述至少两组开关天线阵列对所述待检对象进行扫描。
- 根据权利要求8所述的安检系统，其特征在于，所述扫描驱动器和所述控制器设置在所述主体框架的顶面。
- 根据权利要求9所述的安检系统，其特征在于，所述安检系统还包括外环，所述外环设置在所述旋转盘的外侧，且固定在所述主体框架的底面。
- 根据权利要求10所述的安检系统，其特征在于，所述至少两组开关天线阵列固定在所述主体框架的侧面，且与所述外环固定连接。
- 根据权利要求10所述的安检系统，其特征在于，所述控制器控制所述至少两组开关天线阵列旋转，所述至少两组开关天线阵列的旋转方向与所述旋转盘的旋转方向相反。
- 根据权利要求7所述的安检系统，其特征在于，所述安检系统还包括传感器，所述传感器设置在所述旋转盘上，所述传感器用于检测所述待检对象是否在所述旋转盘上，并将检测结果传送到所述控制器，所述控制器根据所述检测结果控制所述旋转盘工作。
- 根据权利要求7所述的安检系统，其特征在于，所述主体框架至少设置一个开口，所述待检对象通过所述开口进出所述安检系统。
- 一种安检方法，其特征在于，所述安检方法应用于安检系统，所述安 检系统包括：主体框架、至少两组开关天线阵列、扫描驱动器、旋转盘和控制器，所述至少两组开关天线阵列设置在所述主体框架的侧面，所述旋转盘设置在所述主体框架的底面；所述安检方法包括：检测待检对象是否进入所述主体框架内；若是，则所述控制器控制所述旋转盘旋转，所述扫描驱动器驱动所述至少两组开关天线阵列对所述待检对象进行扫描。
- 根据权利要求15所述的安检方法，其特征在于，所述控制器控制所述旋转盘旋转，所述扫描驱动器驱动所述至少两组开关天线阵列对所述待检对象进行扫描，进一步包括：所述控制器控制所述至少两组开关天线阵列和所述旋转盘旋转，所述至少两组开关天线阵列的旋转方向与所述旋转盘的旋转方向相反，所述扫描驱动器驱动所述至少两组开关天线阵列对所述待检对象进行扫描。
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