阅读说明：本技术 一种快速毫米波人体成像安检门 (A kind of quick millimeter wave human body imaging detector gate ) 是由 魏武强 涂昊 于 2019-08-13 设计创作，主要内容包括：本发明公开一种快速毫米波人体成像安检门,包括门框主体、频率源、发射模块阵列、接收模块阵列、信号采集模块、信号处理模块、智能检测模块、时序控制模块、人机界面模块；发射模块阵列、接收模块阵列均设置在门框主体上,频率源与发射模块阵列及接收模块阵列连接,信号采集模块和接收模块阵列连接；发射模块阵列和接收模块阵列对应设置,时序控制模块与发射模块阵列、频率源、信号采集模块连接；信号采集模块、信号处理模块、智能检测模块、人机界面模块依次连接；本发明缩小成像设备的体积,提高成像的抗干扰能力及通过性,可达到实时成像的效果,可以广泛应用于各种安检场所,实现快速、文明、可视化、实时、抗干扰的安检效果。(The present invention discloses a kind of quick millimeter wave human body imaging detector gate, including doorframe main body, frequency source, transmitting module array, receiving module array, signal acquisition module, signal processing module, intelligent detection module, time-sequence control module, human-computer interface module；Transmitting module array, receiving module array are arranged in doorframe main body, and frequency source is connect with transmitting module array and receiving module array, and signal acquisition module is connected with receiving module array；Transmitting module array and receiving module array are correspondingly arranged, and time-sequence control module is connect with transmitting module array, frequency source, signal acquisition module；Signal acquisition module, signal processing module, intelligent detection module, human-computer interface module are sequentially connected；The present invention reduces the volume of imaging device, improves the anti-interference ability and passability of imaging, can reach the effect of real time imagery, can be widely applied to various safety check places, realizes quick, civilization, visualizes, is real-time, jamproof safety check effect.)

1. detector gate is imaged in a kind of quick millimeter wave human body, which is characterized in that including doorframe main body, frequency source, transmitting module battle array Column, receiving module array, signal acquisition module, signal processing module, intelligent detection module, time-sequence control module, man-machine interface Module；The transmitting module array, the receiving module array are arranged in the doorframe main body, the frequency source with it is described Transmitting module array, receiving module array connection, the signal acquisition module are connected with the receiving module array；It is described Transmitting module array and the receiving module array are correspondingly arranged, the time-sequence control module and the transmitting module array, institute State frequency source, signal acquisition module connection；The signal acquisition module, the signal processing module, the intelligent measurement Module, the human-computer interface module are sequentially connected；

Timing control signal is sent to the transmitting module array by the time-sequence control module, the transmitting module array according to Setting timing externally sends electromagnetic wave signal, and the electromagnetic wave signal of transmitting is after human body scatters by the receiving module array Down coversion conversion is received and carries out, the signal acquisition module synchronizes sampling, the letter to the intermediate-freuqncy signal after down coversion Number processing module handles the intermediate-freuqncy signal and forms human body three-dimensional complex image and shown in the human-computer interface module Show, the intelligent detection module detects the human body three-dimensional complex image automatically and indicates entrained concealment article Position and type.

2. detector gate is imaged in quickly millimeter wave human body as described in claim 1, which is characterized in that the doorframe main body includes two Side panel, top panel and lower panel；On the side panel, the position of the transmitting module array and the receiving module array It is set as the rectangular surfaces towards the doorframe body interior and the side of doorframe main body front and rear sides；In the top panel On the lower panel, the position of the transmitting module array and the receiving module array is set as before and after the doorframe main body The side of two sides.

3. detector gate is imaged in quickly millimeter wave human body as described in claim 1, which is characterized in that the frequency source is continuous wave Frequency synthesizer generates Step Frequency continuous wave signal, and the signal initial time and initial phase of the frequency source are by the timing control The control of molding block.

4. detector gate is imaged in quickly millimeter wave human body as described in claim 1, which is characterized in that the transmitting module array packet Several transmitting modules are included, the frequency range of the transmitting module transmitting signal is millimeter wave or terahertz wave band, the transmitting module battle array Column are set as one-dimensional array or multi-dimension array.

5. detector gate is imaged in quickly millimeter wave human body as described in claim 1, which is characterized in that the receiving module array packet Several receiving modules are included, the frequency range that the receiving module receives signal is millimeter wave or terahertz wave band, the receiving module battle array Column are set as one-dimensional array or multi-dimension array.

6. detector gate is imaged in quickly millimeter wave human body as described in claim 1, which is characterized in that it further include antenna house, it is described Antenna house corresponds to the transmitting module array and receiving module array setting, and the antenna house is used to the frequency source The material of 95% or more working frequency range transmitance makes.

7. detector gate is imaged in quickly millimeter wave human body as claimed in claim 5, which is characterized in that the signal acquisition module is set It is set to analog-digital converter, for acquiring the intermediate-freuqncy signal of all receiving modules simultaneously.

8. detector gate is imaged in quickly millimeter wave human body as described in claim 1, which is characterized in that the signal processing module packet The signal processing hardware platform for being provided with signal processing algorithm is included, the signal processing algorithm is completed to the pre- of the intermediate-freuqncy signal Processing, number IQ demodulation, digital filtering, channel correcting, image reconstruction, the signal processing hardware platform are the signal processing The hardware carrier of algorithm.

9. detector gate is imaged in quickly millimeter wave human body as claimed in claim 8, which is characterized in that the signal processing hardware is flat Platform is set as the group based on one or more of FPGA, DSP, ARM, GPU, CPU and merges the letter in conjunction with made by support circuit Number processing board.

10. detector gate is imaged in quickly millimeter wave human body as described in claim 1, which is characterized in that the time-sequence control module Using FPGA platform, time sequential pulse is generated to control the timing of each transmitting module.

Technical field

The present invention relates to microwave electromagnetic field technical fields, and in particular to a kind of quick millimeter wave human body imaging detector gate.

Background technique

In current public safety field, occupy mainstream security action is still " metallic door+artificial seeking ", the safety inspection method Safety check speed is slow, there is certain person to subject invades.On this basis, occur a variety of human body imaging safety checks in recent years System, be broadly divided into passive type Terahertz safety check imaging system, active " one dimensional linear array adds one-dimensional mechanical scanning " millimeter wave at As safe examination system is imaged in system, the QPS series active millimeter wave safe examination system of Luo De Schwarz company and X-ray human body. Wherein passive type Terahertz safety check imaging system is at present to win micro- Terahertz Information technology Co., Ltd as representative, the system system The passive THz wave for receiving human body itself and issuing, is easy by ambient temperature interference and systems bulky；It is active " one-dimensional Linear array adds one-dimensional mechanical scanning " the QPS series active millimeter wave safety check system of millimeter wave imaging system and Luo De Schwarz company System imaging time about needs 4 seconds~5 seconds, and imaging slowly, is not suitable for large passenger flow safety check scene；Safety check system is imaged in X-ray human body System radiates human body using X-ray, causes serious injury to human body.

In view of the above drawbacks, creator of the present invention obtains the present invention by prolonged research and practice finally.

Summary of the invention

To solve above-mentioned technological deficiency, the technical solution adopted by the present invention is, provide a kind of quick millimeter wave human body at As detector gate, including doorframe main body, frequency source, transmitting module array, receiving module array, signal acquisition module, signal processing Module, intelligent detection module, time-sequence control module, human-computer interface module；The transmitting module array, the receiving module array It is arranged in the doorframe main body, the frequency source is connect with the transmitting module array, the receiving module array, described Signal acquisition module is connected with the receiving module array；The transmitting module array and receiving module array correspondence are set It sets, the time-sequence control module is connect with the transmitting module array, the frequency source, the signal acquisition module；The letter Number acquisition module, the signal processing module, the intelligent detection module, the human-computer interface module are sequentially connected；

Timing control signal is sent to the transmitting module array, the transmitting module array by the time-sequence control module Electromagnetic wave signal is externally sent according to setting timing, the electromagnetic wave signal of transmitting is after human body scatters by the receiving module Array received simultaneously carries out down coversion conversion, and the signal acquisition module synchronizes sampling, institute to the intermediate-freuqncy signal after down coversion Signal processing module is stated to handle the intermediate-freuqncy signal and form human body three-dimensional complex image in the human-computer interface module Upper display, the intelligent detection module detect the human body three-dimensional complex image automatically and indicate entrained concealment object The position of product and type.

Preferably, the doorframe main body includes two sides panel, top panel and lower panel；On the side panel, the hair The position for penetrating module array and the receiving module array is set as rectangular surfaces towards the doorframe body interior and described The side of doorframe main body front and rear sides；On the top panel and the lower panel, the transmitting module array and the reception The position of module array is set as the side of doorframe main body front and rear sides.

Preferably, the frequency source is cw frequency synthesizer, Step Frequency continuous wave signal is generated, the frequency source Signal initial time and initial phase are controlled by the time-sequence control module.

Preferably, the transmitting module array includes several transmitting modules, the frequency range of the transmitting module transmitting signal is Millimeter wave or terahertz wave band, the transmitting module array are set as one-dimensional array or multi-dimension array.

Preferably, the receiving module array includes several receiving modules, the frequency range that the receiving module receives signal is Millimeter wave or terahertz wave band, the receiving module array are set as one-dimensional array or multi-dimension array.

Preferably, the quick millimeter wave human body imaging detector gate further includes antenna house, the antenna house corresponds to the hair Module array and receiving module array setting are penetrated, the antenna house uses the working frequency range transmitance to the frequency source 95% or more material production.

Preferably, the signal acquisition module is set as analog-digital converter, for acquiring in all receiving modules simultaneously Frequency signal.

Preferably, the signal processing module includes the signal processing hardware platform for being provided with signal processing algorithm, it is described Signal processing algorithm completes pretreatment, the number IQ demodulation, digital filtering, channel correcting, image reconstruction to the intermediate-freuqncy signal, The signal processing hardware platform is the hardware carrier of the signal processing algorithm.

Preferably, the signal processing hardware platform is set as based on one of FPGA, DSP, ARM, GPU, CPU or several The group of kind, which merges, combines Signal transacting board analysis made by support circuit.

Preferably, the time-sequence control module uses FPGA platform, time sequential pulse is generated to control each transmitting module Timing.

Compared with the prior art the beneficial effects of the present invention are: the present invention reduces the volume of imaging device, improves Imaging it is anti-interference and can handling capacity, millimeter wave human body imaging safe examination system in by multicomponent signal handle hardware platform with The depth optimization of imaging algorithm has achieved the effect that real time imagery；The invention can be widely applied to various safety check places, substitution Existing metal detection door realizes quick, civilization, visualizes, is real-time, jamproof safety check effect.

Detailed description of the invention

Fig. 1 is the structural schematic diagram that detector gate is imaged in the quick millimeter wave human body；

Fig. 2 is the aerial array figure of the front end face；

Fig. 3 is the aerial array figure of the side panel；

Fig. 4 is that the schematic diagram that detector gate carries out image checking to human body front is imaged in the quick millimeter wave human body；

Fig. 5 is that the schematic diagram that detector gate carries out image checking to human body two sides is imaged in the quick millimeter wave human body；

Fig. 6 is that the schematic diagram that detector gate carries out image checking to the human body back side is imaged in the quick millimeter wave human body；

Fig. 7 is the systematic schematic diagram that detector gate is imaged in the quick millimeter wave human body.

Digital representation in figure:

1- side panel；2- top panel；3- lower panel；4- aerial array；100- frequency source；200- transmitting module array； 300- receiving module array；400- antenna house；500- signal acquisition module；600- signal processing module；700- intelligent measurement mould Block；800- time-sequence control module；900- human-computer interface module；1000- power module.

Specific embodiment

Below in conjunction with attached drawing, the forgoing and additional technical features and advantages are described in more detail.

Quick millimeter wave human body imaging detector gate of the present invention includes that two sides panel 1 and top panel 2, lower panel 3 form Doorframe main body, frequency source 100, transmitting module array 200, receiving module array 300, antenna house 400, signal acquisition module 500, signal processing module 600, intelligent detection module 700, time-sequence control module 800, human-computer interface module 900, power module 1000。

The transmitting module array 200, the receiving module array 300 are arranged in the doorframe main body, the frequency Rate source 100 is connect with the transmitting module array 200, the receiving module array 300, the transmitting module array 200 and institute It states receiving module array 300 to be correspondingly arranged, the time-sequence control module 800 and the transmitting module array 200, the frequency source 100, the signal acquisition module 500 connects, and for accurately controlling the clock and job order of corresponding part, controls each hair Penetrate the timing of module.The power module 1000 is the frequency source 100, the transmitting module array 200, the receiving module Array 300, the signal acquisition module 500, the signal processing module 600, the intelligent detection module 700, the timing Control module 800, the human-computer interface module 900 are powered.

It is the signal acquisition module 500, the signal processing module 600, the intelligent detection module 700, described man-machine Interface module 900 is sequentially connected, and is handled for realizing to 300 received signal of receiving module array, and be finally Operator shows.

Preferably, being provided with camera on the top panel 2, the lower panel 3 is provided with sole metallics detector, The camera, the sole metallics detector with 900 data connection of human-computer interface module.In general, described Camera is placed in the top panel 2, and for carrying out personnel record's matching to by the personnel of safety check, the later period can access public security system System carries out danger coefficient classification to personnel, realizes differentiation safety check.The sole metallics detector can be used for detecting personage Whether sole carries dangerous goods, realizes the comprehensive detection of human body.

Specifically, timing control signal is sent to the transmitting module array 200, institute by the time-sequence control module 800 Stating each transmitting module on transmitting module array 200 can externally send millimeter wave or Terahertz according to pre-set timing Electromagnetic wave signal, the electromagnetic wave signal of transmitting are received and are carried out down by the receiving module array 300 after human body scatters Frequency conversion conversion, the signal acquisition module 500 synchronize sampling, the signal processing module to the intermediate-freuqncy signal after down coversion 600 pairs of intermediate-freuqncy signals are handled and form human body three-dimensional complex image and shown in the human-computer interface module 900, institute State position and type that intelligent detection module 700 detects image automatically and indicates entrained concealment article.

The doorframe main body includes two sides panel 1 and top panel 2, lower panel 3, and the transmitting is arranged in the side panel 1 The position of module array 200 and the receiving module array 300 is rectangular surfaces towards the doorframe body interior and described The transmitting module array 200 and institute is arranged on the top panel 2 and the lower panel 3 in the side of doorframe main body front and rear sides The position for stating receiving module array 300 is the side of doorframe main body front and rear sides.

The frequency source 100 be cw frequency synthesizer, generate Step Frequency continuous wave signal, signal initial time and Initial phase is controlled by the time-sequence control module 800.

The transmitting module array 200 includes several transmitting modules, includes one three times in each transmitting module Frequency device, a filter, an amplifier and a transmitting antenna.The frequency range of transmitting module transmitting signal be millimeter wave or Terahertz wave band, the transmitting module array 200 can be an one-dimensional array, or a multi-dimension array.

Likewise, the receiving module array 300 includes several receiving modules, it include one in each receiving module A frequency multiplier, a low-noise amplifier, a frequency mixer, two filters, an intermediate frequency amplifier and a receiving antenna. The frequency range that the receiving module receives signal is millimeter wave or terahertz wave band, and the receiving module array 300 can be one One-dimensional array a, or multi-dimension array.

In the present embodiment, the antenna house 400 is to 95% or more system working frequency range transmitance and to have knot enough The material of structure intensity and uniformity is formed, for protecting the transmitting module array 200 and the receiving module array 300.

In the present embodiment, the signal acquisition module 500 is a kind of analog-digital converter, can be acquired simultaneously all described The intermediate-freuqncy signal of receiving module.

In the present embodiment, the signal processing module 600 includes the signal processing hardware for being provided with signal processing algorithm Platform, pretreatment, the number IQ demodulation, digital filtering, channel correcting, image reconstruction of the complete pair signals of signal processing algorithm Etc. functions, the signal processing hardware platform be the signal processing algorithm hardware carrier.

Specifically, the signal processing hardware platform is based on one or more of FPGA, DSP, ARM, GPU, CPU Group, which merges, combines Signal transacting board analysis made by support circuit.

The intelligent detection module 700 is directly based upon the intelligence that three-dimensional complex image carries out concealment object using deep learning framework It can identification.

The time-sequence control module 800 uses FPGA platform, generates a series of time sequential pulses, accurately controls each subsystem Clock and job order control the timing of each transmitting module.

In the present embodiment, the human-computer interface module 900 can will test result and be pushed away by image, sound, optics, terminal It the combination of one or more of means such as send to inform operator, and realizes that operator controls and sets machine.

The workflow of quick millimeter wave human body imaging detector gate of the present invention is as follows:

S1, after system starting, system will be continuously in operation detection state, and the transmitting module array 200 is with different Transmission channel uninterruptedly externally will emit a string millimeter waves or terahertz with nominated bandwidth according to pre-set timing Hereby signal.

S2, when human body is when being advanced through detector gate, human body is located at the position Fig. 4, Fig. 5, Fig. 6, described at this time Receiving module array 300 will receive the echo-signal containing position of human body, shape information.

S3, the signal processing module 600 pre-processes data, digital working Q demodulation, digital filtering, signal extraction, Channel correcting, image reconstruction；

S4, the intelligent detection module 700 carries out intelligent recognition to image, and exports result；

S5, the human-computer interface module 900 by man-machine interface inform testing result, system continue to next pedestrian into Row safety check.

The present invention has following two operating mode:

Operating mode one: start quick millimeter wave human body imaging detector gate, when subject moves towards detector gate, detector gate Front plate imaging is scanned to human body front, as shown in Figure 4；When subject comes into detector gate, the two sides of detector gate Panel 1 is scanned imaging to human body two sides, while the metal detector of lower panel 3 detects sole, as shown in Figure 5； When subject walks out detector gate, the rear panel of detector gate is scanned imaging to the human body back side, as shown in Figure 6；When next A subject arrives, and carries out safety check in the same way.

Operating mode two: start quick millimeter wave human body imaging detector gate, after subject comes into detector gate, in safety check It is rotated by 90 ° in door, realizes the imaging safety check comprehensive to human body.

The foregoing is merely presently preferred embodiments of the present invention, is merely illustrative for the purpose of the present invention, and not restrictive 's.Those skilled in the art understand that in the spirit and scope defined by the claims in the present invention many changes can be carried out to it, It modifies or even equivalent, but falls in protection scope of the present invention.