阅读说明：本技术 一种安防检测系统及检测方法 (Security detection system and detection method ) 是由 舒国强 胡罗林 张华彬 段麒麟 符精华 杨伟 李明高 严秦 廖强 于 2020-11-25 设计创作，主要内容包括：本发明提供了一种安防检测系统及检测方法,包括：二维扫描平台、毫米波扫描单元、超声波扫描单元、身份采集分析单元和服务器；二维扫描平台与服务器连接,毫米波扫描单元和超声波扫描单元均与服务器连接,身份采集分析单元与服务器连接,身份采集分析单元用于采集被检人员的身份信息和面部信息,自动进行被检人员危险程度判定；服务器接收身份采集分析单元发送的危险程度判定信息并控制毫米波扫描单元和超声波扫描单元进行扫描处理。本发明采用合成孔径雷达成像技术,成像速度快,成像分辨率高,安检快速高效；通过身份采集分析单元分析出潜在的体内藏毒等人员,能够使用毫米波进行被检人员体表成像和超声波对体内成像,识别出体内藏毒的人员。(The invention provides a security detection system and a security detection method, which comprise the following steps: the system comprises a two-dimensional scanning platform, a millimeter wave scanning unit, an ultrasonic scanning unit, an identity acquisition and analysis unit and a server; the two-dimensional scanning platform is connected with the server, the millimeter wave scanning unit and the ultrasonic scanning unit are both connected with the server, the identity acquisition and analysis unit is connected with the server and is used for acquiring identity information and face information of a detected person and automatically judging the danger degree of the detected person; and the server receives the danger degree judgment information sent by the identity acquisition and analysis unit and controls the millimeter wave scanning unit and the ultrasonic scanning unit to perform scanning processing. The invention adopts the synthetic aperture radar imaging technology, the imaging speed is high, the imaging resolution is high, and the security inspection is quick and efficient; potential personnel such as the hidden virus in the body can be analyzed through the identity acquisition and analysis unit, the millimeter waves can be used for body surface imaging and ultrasonic wave imaging of the detected personnel, and the personnel with the hidden virus in the body can be identified.)

1. A security detection system, comprising: the system comprises a two-dimensional scanning platform (1), a millimeter wave scanning unit, an ultrasonic scanning unit, an identity acquisition and analysis unit and a server;

the two-dimensional scanning platform (1) is connected with the server and used for installing and driving the millimeter wave scanning unit and the ultrasonic scanning unit to move along the Z axis according to related parameters set by the server;

the millimeter wave scanning unit and the ultrasonic scanning unit are both connected with the server, the millimeter wave scanning unit is used for generating and sending millimeter wave signals, the ultrasonic scanning unit is used for generating and sending ultrasonic signals, and the millimeter wave scanning unit and the ultrasonic scanning unit receive and process echo signals returned by detected personnel to obtain intermediate frequency signals;

the identity acquisition and analysis unit is connected with the server and is used for acquiring identity information and facial information of the detected personnel, carrying out artificial intelligent operation on the acquired data and automatically judging the danger degree of the detected personnel;

the server is used for setting relevant parameters of the two-dimensional scanning platform (1), receiving the danger degree judgment information sent by the identity acquisition and analysis unit, controlling the millimeter wave scanning unit and the ultrasonic scanning unit to perform scanning processing, and performing imaging processing, suspicious object identification and display on the received intermediate frequency signals.

2. The security detection system of claim 1, wherein the millimeter wave scanning unit comprises:

an antenna array comprising a receive antenna array comprising a plurality of receive antennas and a transmit antenna array comprising a plurality of transmit antennas;

the switch array comprises a receiving switch array connected with the receiving antenna array and a transmitting switch array connected with the transmitting antenna array, the receiving switch array consists of a plurality of receiving switches, and the transmitting switch array consists of a plurality of transmitting switches;

the output end of the digital processing control unit is connected with the input ends of the receiving switch array and the transmitting switch array and is used for receiving and processing the baseband signals of the channels and controlling the on-off of each receiving switch and each transmitting switch;

and the receiving and transmitting channel module is connected with the receiving switch array, the transmitting switch array and the digital processing control unit, and the receiving and transmitting channel module is connected with an external reference signal and is used for converting the frequency of the external reference signal into a millimeter wave band and converting a received echo signal into an intermediate frequency signal and outputting the intermediate frequency signal to the digital processing control unit.

3. The security detection system of claim 1, wherein the identity acquisition and analysis unit comprises:

the integrated identity card recognizer (2) is used for verifying the identity of the detected person before security check to acquire an identity image of the detected person;

the image acquisition module (3) is used for acquiring the face information and the walking posture of the detected person;

the face recognition module is used for comparing face information with an identity image to obtain a portrait comparison result, extracting image features from the face information, determining emotion numerical values of the detected person according to the image features and the image feature library, and judging the possibility of the internal toxicity of the detected person by combining the walking posture.

4. The security detection system of claim 2, wherein the transmit antenna array comprises 80 horn transmit antennas and the receive antenna array comprises 80 horn receive antennas.

5. The security detection system of claim 1, further comprising a voice alarm module (4), wherein the voice alarm module (4) is connected with the identity acquisition and analysis unit and the server, and is used for giving an alarm when the detected person is high in risk degree and carries prohibited articles.

6. The security detection system of claim 1, wherein the server comprises:

the image generation module is used for generating a doll image matched with the imaging proportion of the detected person;

the suspicious article positioning module is used for identifying and positioning suspicious articles;

the image display module (8), the image display module (8) is used for marking and displaying on the image of the doll according to the location of the suspicious object.

7. The security detection system of claim 1, wherein the server further comprises a control module, a human-computer interaction module and an image processing module, and the human-computer interaction module and the image processing module are connected with the control module.

8. The security detection system of claim 1, wherein the server further comprises an image database, an image encryption module, and a decryption query module.

9. The security detection system of claim 1, further comprising a mobile terminal, wherein the mobile terminal is connected to a plurality of the servers, and the mobile terminal comprises a display module, an inquiry module, and an operation status detection module.

10. A security detection method is characterized by comprising the following steps:

step 1: the identity acquisition and analysis unit acquires identity information and facial information of the detected person, and performs artificial intelligent operation on the acquired data to automatically judge the danger degree of the detected person;

step 2: the server receives the danger degree judgment data sent by the identity acquisition and analysis unit, and controls the millimeter wave scanning unit to scan the outside of the body surface of the detected person if the danger degree of the detected person is low;

if the danger degree of the detected person is high, controlling the millimeter wave scanning unit to scan the body surface of the detected person, and controlling the ultrasonic scanning unit to scan the corresponding part in the body of the detected person;

and step 3: the server receives the digital intermediate frequency signals of the millimeter wave scanning unit and/or the ultrasonic wave scanning unit and images based on the synthetic aperture radar imaging technology;

and 4, step 4: the server displays the spare part heat source human body image through the doll image, and marks suspicious objects on the doll image.

Technical Field

The invention relates to the technical field of security inspection systems, in particular to a security inspection system and a security inspection method.

Background

"millimeter wave" means a millimeter wave having a wavelength of from 10mm to 1mm, corresponding to a frequency of from 30GHz to 300 GHz. The millimeter wave has the following outstanding advantages: compared with microwaves, the frequency of the 1 millimeter wave is high and the wavelength is short, so that the imaging precision is high, and the millimeter wave circuit has the advantage of small circuit volume; compared with infrared, the 2 millimeter wave has the capability of all-weather work, especially under severe natural conditions such as rain, fog and the like; the 3 millimeter waves have certain penetrating power to smoke, clothes and the like, which is very favorable for detecting hidden targets in severe environment; 4, the objects with different physical properties have greatly different sensitivity degrees to millimeter waves, that is, millimeter wave radiation or scattering characteristics are greatly different, for example, in the case of metal, the millimeter wave radiance of the metal is close to zero, and in an imaging scene, the metal is almost a "cold" target.

By combining the characteristics, the millimeter wave imaging has high research value and application prospect. For example, in an airport and station security check system, a millimeter wave imaging system can be used for detecting dangerous objects such as gun cutters hidden in clothes.

In the field of millimeter wave imaging, the research results of millimeter wave imaging are mainly focused on the Pacific Northwest Laboratory (Pacific north National Laboratory). Mcmackin et al in this laboratory developed a three-dimensional holographic imaging scanning system whose scanning mechanism was based on cylindrical scanning, and which has achieved commercialization of millimeter wave imaging systems. The imaging system adopts an active imaging mechanism, and obtains a three-dimensional millimeter wave image of a target through inversion of a holographic algorithm. The technology has been licensed from L-3Communications and Save View Inc., which produce products for use in security inspection systems and try-to-select garments at stations such as stations and docks, respectively. However, this system is expensive because it uses 384 transceiver units.

In China, millimeter wave imaging is influenced by low level development of early millimeter wave devices, passive systems are mostly adopted, and a prototype has large volume, high cost, low imaging resolution and long scanning time. The millimeter waves are used for security inspection, and the detection of forbidden articles outside the human body can be realized only through clothes and the like; namely, the forbidden articles in the human body such as the concealed toxins and the like cannot be identified; at present, X-ray human body inside and outside hidden object inspection equipment is available, but the X-ray has stronger radiation, so that the X-ray is forbidden to be used for security inspection in some countries.

Content of application

The invention aims to provide a security detection system and a security detection method, the system has the advantages of low cost, high imaging speed, high resolution and high cost performance, the modular design is adopted, the equipment can be conveniently moved and carried, corresponding scanning can be carried out according to different detected personnel, and the problems of the existing security detection equipment are solved.

The embodiment of the invention is realized by the following technical scheme: a security detection system, comprising: the system comprises a two-dimensional scanning platform, a millimeter wave scanning unit, an ultrasonic scanning unit, an identity acquisition and analysis unit and a server;

the two-dimensional scanning platform is connected with the server and used for installing and driving the millimeter wave scanning unit and the ultrasonic scanning unit to move along the Z axis according to related parameters set by the server;

the millimeter wave scanning unit and the ultrasonic scanning unit are both connected with the server, the millimeter wave scanning unit is used for generating and sending millimeter wave signals, the ultrasonic scanning unit is used for generating and sending ultrasonic signals, and the millimeter wave scanning unit and the ultrasonic scanning unit receive and process echo signals returned by detected personnel to obtain intermediate frequency signals;

the identity acquisition and analysis unit is connected with the server and is used for acquiring identity information and facial information of the detected personnel, carrying out artificial intelligent operation on the acquired data and automatically judging the danger degree of the detected personnel;

the server is used for setting relevant parameters of the two-dimensional scanning platform, receiving the danger degree judgment information sent by the identity acquisition and analysis unit, controlling the millimeter wave scanning unit and the ultrasonic scanning unit to perform scanning processing, and performing imaging processing, suspicious object identification and display on the received intermediate frequency signals.

According to a preferred embodiment, the millimeter wave scanning unit includes:

an antenna array comprising a receive antenna array comprising a plurality of receive antennas and a transmit antenna array comprising a plurality of transmit antennas;

the switch array comprises a receiving switch array connected with the receiving antenna array and a transmitting switch array connected with the transmitting antenna array, the receiving switch array consists of a plurality of receiving switches, and the transmitting switch array consists of a plurality of transmitting switches;

the output end of the digital processing control unit is connected with the input ends of the receiving switch array and the transmitting switch array and is used for receiving and processing the baseband signals of the channels and controlling the on-off of each receiving switch and each transmitting switch;

and the receiving and transmitting channel module is connected with the receiving switch array, the transmitting switch array and the digital processing control unit, and the receiving and transmitting channel module is connected with an external reference signal and is used for converting the frequency of the external reference signal into a millimeter wave band and converting a received echo signal into an intermediate frequency signal and outputting the intermediate frequency signal to the digital processing control unit.

According to a preferred embodiment, the identity acquisition and analysis unit comprises:

the integrated identity card recognizer is used for identity verification of the detected person before security check to obtain an identity image of the detected person;

the image acquisition module is used for acquiring the face information and the walking posture of the detected person;

the face recognition module is used for comparing face information with an identity image to obtain a portrait comparison result, extracting image features from the face information, determining emotion numerical values of the detected person according to the image features and the image feature library, and judging the possibility of the internal toxicity of the detected person by combining the walking posture.

According to a preferred embodiment, the transmit antenna array comprises 80 horn transmit antennas, and the receive antenna array comprises 80 horn receive antennas.

According to a preferred embodiment, the system further comprises a voice alarm module, wherein the voice alarm module is connected with the identity acquisition and analysis unit and the server and used for giving an alarm when the danger degree of the detected personnel is high and the detected personnel carries forbidden articles.

According to a preferred embodiment, the server comprises:

the image generation module is used for generating a doll image matched with the imaging proportion of the detected person;

the suspicious article positioning module is used for identifying and positioning suspicious articles;

and the image display module is used for performing annotation display on the image of the doll according to the positioning of the suspicious object.

According to a preferred embodiment, the server further comprises a control module, a human-computer interaction module and an image processing module, wherein the human-computer interaction module and the image processing module are connected with the control module.

According to a preferred embodiment, the server further comprises an image database, an image encryption module and a decryption query module.

According to a preferred embodiment, the security detection system further comprises a mobile terminal, the mobile terminal is connected with the plurality of servers, and the mobile terminal comprises a display module, an inquiry module and an operation state detection module.

The invention also provides a security detection method, which comprises the following steps:

step 1: the identity acquisition and analysis unit acquires identity information and facial information of the detected person, and performs artificial intelligent operation on the acquired data to automatically judge the danger degree of the detected person;

step 2: the server receives the danger degree judgment data sent by the identity acquisition and analysis unit, and controls the millimeter wave scanning unit to scan the outside of the body surface of the detected person if the danger degree of the detected person is low;

if the danger degree of the detected person is high, controlling the millimeter wave scanning unit to scan the body surface of the detected person, and controlling the ultrasonic scanning unit to scan the corresponding part in the body of the detected person;

and step 3: the server receives the digital intermediate frequency signals of the millimeter wave scanning unit and/or the ultrasonic wave scanning unit and images based on the synthetic aperture radar imaging technology;

and 4, step 4: the server displays a spare part heat source human body image through the doll image, and marks suspicious objects on the doll image;

wherein, the step 2 comprises the following steps: the server receives the danger degree judgment data sent by the identity acquisition and analysis unit, and controls the millimeter wave scanning unit to scan the outside of the body surface of the detected person if the danger degree of the detected person is low;

and if the danger degree of the detected person is high, controlling the millimeter wave scanning unit to scan the body surface of the detected person, and controlling the ultrasonic scanning unit to scan the corresponding part in the body of the detected person.

The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects: the safety detection system adopts the synthetic aperture radar imaging technology, and has the characteristics of high imaging speed, high imaging resolution, and high safety inspection speed and efficiency; the security check instrument adopts a flat plate type scanning structure, the X-axis direction is array electrical scanning, the Z-axis direction is mechanical scanning, and the whole body scanning can be completed within 2 seconds of the rest of the detected person. In addition, the invention can analyze the potential personnel with the hidden virus and the like through the identity acquisition and analysis unit, and can use ultrasonic waves to image the inside of the body while using millimeter waves to image the body surface of the detected personnel, thereby being convenient to identify the personnel with the hidden virus; in addition, the security check instrument adopts a modular design, the server, the two-dimensional scanning platform and the like adopt detachable and retractable structural designs, the product integration level is high, the volume is small, the weight is light, and the device is convenient to move and carry; in addition, the security check instrument has obvious cost advantage and high cost performance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic diagram of a system provided in embodiment 1 of the present invention;

fig. 2 is a schematic diagram of a millimeter wave scanning unit provided in embodiment 1 of the present invention;

fig. 3 is a schematic front view of a security check apparatus provided in embodiment 1 of the present invention;

fig. 4 is a schematic back view of a security check apparatus provided in embodiment 1 of the present invention;

the reference numeral 1-two-dimensional scanning platform, 2-integrated ID card recognizer, 3-image acquisition module, 4-voice alarm module, 5-identity display, 6-metal detection platform, 7-top platform, 8-image display module.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of this application is used, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1 to 4, the present embodiment provides a security detection system, including: the system comprises a two-dimensional scanning platform 1, a millimeter wave scanning unit, an ultrasonic scanning unit, an identity acquisition and analysis unit and a server;

the two-dimensional scanning platform 1 is connected with the server and used for installing and driving the millimeter wave scanning unit and the ultrasonic scanning unit to move along the Z axis according to related parameters set by the server; further, the two-dimensional scanning platform 1 comprises a flat plate structure with one surface capable of transmitting millimeter waves and ultrasonic waves, a metal detection platform 6 is arranged at the bottom of the millimeter wave and ultrasonic wave transmitting side, and a top table 7 is arranged at the top of the two-dimensional scanning platform 1;

the two-dimensional scanning platform 1 is internally provided with a servo motor, a mechanical scanning mechanism, a millimeter wave scanning unit and an ultrasonic scanning unit, the servo motor is in transmission connection with the mechanical scanning mechanism, and preferably, the millimeter wave scanning unit and the ultrasonic scanning unit are both connected to the same mechanical scanning mechanism and used for moving up and down along the Z-axis direction through the mechanical scanning mechanism; it can be understood that the two scanning mechanisms may be connected to different mechanical scanning mechanisms respectively, and the two scanning mechanisms are driven by the servo motor to move up and down along the Z-axis direction respectively.

The millimeter wave scanning unit and the ultrasonic wave scanning unit are both connected with the server and used for receiving parameters preset by the server and executing corresponding scanning processing; the millimeter wave scanning unit is used for generating and sending millimeter wave signals, and further the millimeter wave signals are used for imaging the body surface of the person to be detected through clothes and the like of the person to be detected; therefore, in order to realize the detection of the internal toxin, a new way for scanning the inside of the human body is necessary; the ultrasonic scanning unit is used for generating and sending ultrasonic signals, the ultrasonic signals are mainly used for scanning parts in vivo, such as stomach, rectum and the like, of potential in-vivo toxic persons, and for the person to be detected without potential danger, only millimeter wave scanning is used, so that unnecessary radiation is less generated;

the millimeter wave scanning unit and the ultrasonic wave scanning unit receive and process echo signals returned by detected personnel to obtain intermediate frequency signals, the intermediate frequency signals are sent to the server, imaging is carried out on the basis of a synthetic aperture radar technology through the server, so that the imaging speed can be increased, images with higher resolution can be obtained, and the efficiency and the accuracy of suspicious object identification can be improved.

The identity acquisition and analysis unit is connected with the server and used for sending the data acquired by the identity acquisition and analysis unit to the server and carrying out the next step of control through the server;

the identity acquisition and analysis unit is used for acquiring identity information and facial information of the detected person, and it can be understood that in general situations, the person who contains toxic substances may be a scofflaw or a person who has past crime records; therefore, the basis can be provided for judging potential in-vivo toxic persons to a certain extent through the identity verification of the detected persons; the person with the hidden toxin can be accompanied by nervous tension, unnatural facial expression and other phenomena, so that the person with the hidden toxin can verify whether the identity is consistent or not by acquiring the facial information, and can provide a basis for judging the potential person with the hidden toxin to a certain extent by identifying the facial information. Furthermore, the acquired facial information is subjected to artificial intelligence operation, the hidden toxicity possibility of the detected person is identified through comparison and analysis with a facial expression library or a micro expression library, the danger degree judgment of the detected person is automatically carried out according to identity identification, for example, the danger degree judgment of the detected person is carried out, such as the passing crime record or the scofflaw, and the situation that nerve tension and the like are accompanied in the detected process, the danger can be judged, the ultrasonic scanning unit is automatically controlled to carry out scanning processing on corresponding parts, such as the stomach, the rectum and the like, and the scanning processing outside the body surface is carried out through millimeter wave scanning, the local perspective of potential dangerous persons can be realized, the scanning requirement can be met, and the radiation can be reduced as far as possible.

The server is used for setting relevant parameters of the two-dimensional scanning platform 1, such as time sequence, and controlling the up-and-down movement of the mechanical scanning mechanism according to the time sequence; and receiving the danger degree judgment information sent by the identity acquisition and analysis unit, controlling the millimeter wave scanning unit and the ultrasonic scanning unit to perform scanning processing, and performing imaging processing, suspicious object identification and display on the received intermediate frequency signals.

Further, the millimeter wave scanning unit includes: the antenna array comprises a receiving antenna array and a transmitting antenna array, wherein the receiving antenna array comprises a plurality of receiving antennas, and the transmitting antenna array comprises a plurality of transmitting antennas;

the switch array comprises a receiving switch array connected with the receiving antenna array and a transmitting switch array connected with the transmitting antenna array, the receiving switch array consists of a plurality of receiving switches, and the transmitting switch array consists of a plurality of transmitting switches;

the output end of the digital processing control unit is connected with the input ends of the receiving switch array and the transmitting switch array and is used for receiving and processing the baseband signals of the channels and controlling the on-off of each receiving switch and each transmitting switch; further, the digital processing controls the single input termination flip-flop, the quadrature encoded signal pulses, and the LAN port.

And the receiving and transmitting channel module is connected with the receiving switch array, the transmitting switch array and the digital processing control unit, and the receiving and transmitting channel module is connected with an external reference signal and is used for converting the frequency of the external reference signal into a millimeter wave band and converting a received echo signal into an intermediate frequency signal and outputting the intermediate frequency signal to the digital processing control unit. Furthermore, the millimeter wave scanning unit also comprises a power supply module, and the power supply module is connected with a 24V power supply input.

Further, the identity acquisition and analysis unit comprises:

the integrated identity card recognizer 2 is used for verifying the identity of the detected person before security check to acquire an identity image of the detected person, and specifically comprises an identity card recognizer, a fingerprint recognizer, an iris recognizer and the like; further, integrated ID card recognizer sets up in security installations entry one side, and integrated ID card recognizer one side still is equipped with identity display 5, and identity display 5 is connected with identity acquisition and analysis unit for show and examine personnel's identity information.

The image acquisition module 3 is used for acquiring the face information and the walking posture of the detected person, optionally, the image acquisition module 3 is arranged on the lower bottom surface of the top table 7 and is positioned above the detected person during acquisition, so that the walking posture information and the face information of the detected person can be acquired when the detected person enters the detection area and is still; and the face recognition module is used for comparing the face information with the identity image to obtain a portrait comparison result, extracting image features from the face information, determining emotion numerical values of the detected person according to the image features and the image feature library, and judging the possibility of virus in the detected person by combining the walking posture.

Further, the transmitting antenna array comprises 80 horn transmitting antennas, and the receiving antenna array comprises 80 horn receiving antennas; the receiving switch array and the transmitting switch array are mainly used for signal switching.

Further, still include audio alert module 4, audio alert module 4 connects identity acquisition analysis unit and server for it is high to be examined personnel's danger degree and to be examined and report to the police when personnel carry forbidden articles, plays the effect of reminding security check personnel with this.

Further, the server includes:

the image generation module is used for generating a doll image matched with the imaging proportion of the detected person; the suspicious article positioning module is used for identifying and positioning suspicious articles; the image display module 8 is used for performing annotation display on the image of the doll according to the positioning of the suspicious object;

specifically, the server carries out post-processing on the collected detection image through the image generation module, blanks the human body outline, and only keeps the position information of dangerous and suspicious articles. The position of the dangerous goods is displayed at the position of the preset image of the doll in a synthetic mode, so that the leakage of the actual body type, particularly the privacy part of the detected person can be avoided, and the effect of protecting the privacy of the detected person while the security check person works is achieved;

further, the display module may automatically identify suspicious regions in the imaging results using red boxes for identified genuine threat objects, with unidentified objects identified by yellow boxes.

In the security inspection mode, the security inspection personnel can inspect the area where the suspicious object marked in the human body outline is located, and the defects of time and labor waste and inconvenience caused by the fact that the security inspection equipment is used for moving back and forth on the body of the inspected personnel are overcome.

Furthermore, the server also comprises a control module, a human-computer interaction module and an image processing module, wherein the human-computer interaction module and the image processing module are connected with the control module. Specifically, in order to facilitate the discrimination of the imaging detection result, the human-computer interaction module and the image processing module can perform brightness adjustment, contrast adjustment, color inversion processing, detail enhancement, picture restoration, picture identification and other processing on the detected image. And the security inspection detection precision is improved.

Further, the server also comprises an image database, an image encryption module and a decryption query module; specifically, the original image is automatically stored in an image database in a special format after being encrypted, specifically, the original image comprises information such as equipment ID, security check personnel ID, image generation time and the like, and a detection alarm result and a manual mark are reserved. Optionally, the image database corresponds to a single security detection system, and at least ten thousand passing-inspection images of the detected person exist. The decryption query module is specifically used for encrypting the images stored in the image database by adopting images, and reproducing the images only by converting the original data into a standard image format through the decryption query module; the inquiry and operation authority is divided by the decryption inquiry module, and specially authorized personnel can retrieve, watch, transfer and delete the stored images; the system also comprises an operation log module which is used for recording the ID of the image which is subjected to the unloading and the deletion in a log file of the system.

Furthermore, the security detection system supports a self-network mode, a local area network mode and an internet networking mode, wherein the self-network mode refers to networking between a single security inspection instrument and a single server. The detection information data is temporarily stored in the local server;

the local area network mode refers to networking between a plurality of security check instruments and a single server or a plurality of servers. The detection information data can be shared among a plurality of servers;

the internet mode is that the security check instrument and the server are connected to the internet, more terminals including the mobile terminal are established, data links such as remote service and equipment detection are established, a large data platform is established, and a database of a public security organization is linked, so that the identity acquisition and analysis module can call database information of the public security organization, and the detected person who finds danger can directly give an alarm.

Furthermore, the security detection system further comprises a mobile terminal, the mobile terminal is connected with the plurality of servers, and the mobile terminal comprises a display module, an inquiry module and an operation state detection module. Specifically, the display module is used for displaying the name, equipment code number, type, configuration peripheral equipment, IP address and running state of an inspector who logs in the security inspection instrument. Further, the operation state includes operation of a security inspection instrument, alarm, fault and the like. Specifically, the query module is used for further consulting the specific operation condition of each security inspection instrument, displaying the identity of the inspected person, the types of the carried unidentified articles and dangerous articles, the types of contraband articles and the like, and giving a danger degree evaluation grade conclusion.

Furthermore, the security check instrument using the intrinsic safety defense monitoring system adopts a modular design, and the two-dimensional scanning platform 1, the top platform 7, the metal detection platform 6, the server, the millimeter wave scanning unit, the ultrasonic scanning unit, the mechanical scanning mechanism and the servo motor all adopt detachable or retractable structural designs. So that the security check instrument has high integration level, small volume, light weight and convenient movement and carrying.

The working principle is as follows: the identity acquisition and analysis unit acquires identity information and facial information of the detected person, and performs artificial intelligent operation on the acquired data to automatically judge the danger degree of the detected person; the server receives the danger degree judging data sent by the identity acquisition and analysis unit and controls the two-dimensional scanning platform 1 to drive the millimeter wave scanning unit and/or the ultrasonic scanning unit to scan the human body of the person to be detected; if the danger degree of the detected person is high, controlling the millimeter wave scanning unit to scan the body surface of the detected person, and controlling the ultrasonic scanning unit to scan the corresponding part in the body of the detected person; the server receives the digital intermediate frequency signals of the millimeter wave scanning unit and/or the ultrasonic wave scanning unit and images based on the synthetic aperture radar imaging technology; the server displays the spare part heat source human body image through the doll image, and marks suspicious objects on the doll image.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.