Monitoring method, monitoring system and control device for human-body security-inspection device

The present disclosure relates to a monitoring method, a monitoring system and a control device for a human-body security-inspection device. The monitoring method includes: collecting operation parameters of preset monitoring points in target circuit modules of the human-body security-inspection device; obtaining parameter ranges according to module identifiers of the target circuit modules and monitoring-point identifiers of the preset monitoring points, wherein the parameter ranges are associated with the module identifiers and the monitoring-point identifiers respectively; determining whether the operation parameters are in the parameter ranges respectively, and then determining location information of a fault point according to the module identifiers and the monitoring-point identifiers if any of the operation parameters is not in a corresponding parameter range. Therefore, the present disclosure can quickly locate the position of the fault point, thus it is convenient in the maintenance and test work, and improve the efficiency of the maintenance and test work.

TECHNICAL FIELD

Embodiments of the present disclosure generally relate to the security-inspection technology, and in particular relate to a monitoring method, a monitoring system and a control device for a human-body security-inspection device.

BACKGROUND

The millimeter wave is a wave with a frequency in a range from 30 GHz to 300 GHz (which has a wavelength in a range from 1 mm to 10 mm). In the practical engineering application, the low frequency of the millimeter wave is generally reduced to 26 GHz. In the electromagnetic spectrum, the frequency of the millimeter wave is between the frequency of the infrared and the frequency of the microwave. In comparison with the infrared, the millimeter wave has the capability of working in all weathers and can be used in the severe environment, such as smoke dust, cloud and mist, etc. In comparison with the microwave, the millimeter wave has the typical advantages of shorter wavelength, wider bandwidth (able to be used widely), and the property of propagating in the atmosphere. In detail, the millimeter wave mainly has the following characteristics: 1. the millimeter wave is with high precision, the millimeter-wave radar is easier to obtain a narrow beam and a large absolute bandwidth, and the millimeter-wave radar system is more resistant to the electronic interference; 2. in the Doppler radar, the millimeter wave has a high Doppler frequency resolution: 3. in the millimeter-wave imaging system, the millimeter wave is sensitive to the shape and the structure of the target object, and has an excellent capability to distinguish metal objects from the background environment, and can achieve images with high resolutions so as to improve the capability of recognizing and detecting the target object; 4. the millimeter wave can penetrate the plasma; 5. in comparison with the infrared laser, the millimeter wave is less affected by the severe natural environments: 6. the millimeter-wave system is small in size and light in weight, and the millimeter-wave circuit is much smaller in size in comparison with the microwave circuit, thereby the millimeter-wave system is easier to be integrated. These unique characteristics make the millimeter wave able to be used widely in various application fields, especially in the non-destructive testing field and the security-inspection field.

The millimeter-wave imaging technology is mainly divided into the active millimeter-wave imaging technology and the passive millimeter-wave imaging technology. The passive millimeter-wave imaging system is advantageous in simple structure and low cost, but is disadvantageous in long imaging time and poor imaging resolution. With the improvement of the millimeter-wave component and the development of the millimeter-wave component technology, the active millimeter-wave imaging technology has begun to attract more and more attentions. The active millimeter-wave imaging technology mainly adopts the active synthetic-aperture imaging technology or the active holographic-imaging technology. The millimeter-wave holographic imaging method is a method derived from the optical holography method. The millimeter-wave holographic imaging method is based on the electromagnetic-wave coherence principle, in which a transmitter emits a highly-stable millimeter-wave signal firstly, then a receiver receives an echo signal reflected by a corresponding one of points of the target object, and performs a coherent process for the echo signal with a highly-coherent reference signal, to extract information of amplitude and phase of the echo signal, such that to obtain the emission characteristic at the target point, and eventually a millimeter-wave image of the target object in the scene may be obtained via a data and image processing method. The millimeter-wave image obtained by the active millimeter-wave holographic-imaging technology has good resolution, and the millimeter-wave holographic-imaging technology may cooperate with the mechanical scanning technology, to greatly shorten the imaging time thereof, and be executed by practice of engineering, thus the millimeter-wave holographic-imaging technology is very suitable for the active millimeter-wave short-range imaging technology.

The current three-dimensional holographic imaging technology on the international are mostly adopting the active millimeter-wave cylindrical array rotary-scanning technology, that is, it adopts millimeter-wave transmitting/receiving antenna modules, which are arranged in an array, to obtain the body scanning information. However, it has too many circuits, such as the receive/transmit antenna modules and the related circuits, and even more than 60 circuit boards. When controlling the human-body security-inspection device, after an upper computer transmits a control signal, it is hard to monitor whether or not each module receives a corresponding control signal or wherein or not each functional module is normal, and can not constantly monitor the working status of each circuit module. Once the human-body security-inspection device breaks down, it needs a very complicated work to repair and test the device, thus it is very inconvenient to maintain, repair and debug the human-body security-inspection device.

SUMMARY

The present disclosure is to provide a monitoring method, a monitoring system and a control device for a human-body security-inspection device, to quickly locate a position of a fault point when the human-body security-inspection device breaks down, thus improving the efficiency of maintenance and test.

The present disclosure is achieved through following technical solutions.

A monitoring method for a human-body security-inspection device, including:

collecting operation parameters of preset monitoring points in target circuit modules of the human-body security-inspection device:

obtaining parameter ranges according to module identifiers of the target circuit modules and monitoring-point identifiers of the preset monitoring points, wherein the parameter ranges are associated with the module identifiers and the monitoring-point identifiers respectively; and

determining whether the operation parameters are in the parameter ranges respectively, and then determining location information of a fault point according to the module identifiers and the monitoring-point identifiers if any of the operation parameters is not in a corresponding parameter range.

A monitoring system for a human-body security-inspection device, including:

a data-collecting unit, configured to collect operation parameters of preset monitoring points in target circuit modules of the human-body security-inspection device:

a data-processing unit, configured to obtain parameter ranges according to module identifiers of the target circuit modules and monitoring-point identifiers of the preset monitoring points, wherein the parameter ranges are associated with the module identifiers and the monitoring-point identifiers respectively; and

a fault-point position determining unit, configured to determining whether the operation parameters are in the parameter ranges respectively, and then determining location information of a fault point according to the module identifiers and the monitoring-point identifiers if any of the operation parameters is not in a corresponding parameter range.

A control device for a human-body security-inspection device, including: a first millimeter-wave receiving and transmitting control module, a second millimeter-wave receiving and transmitting control module, a motion module and an upper computer, wherein the control device further comprises a monitoring module, the upper computer is connected to the first millimeter-wave receiving and transmitting control module, the second millimeter-wave receiving and transmitting control module, the motion module and the monitoring module respectively, and the monitoring module is further connected to the first millimeter-wave receiving and transmitting control module, the second millimeter-wave receiving and transmitting module and the motion module respectively; and

the monitoring module is configured to, after the first millimeter-wave receiving and transmitting control module, the second millimeter-wave receiving and transmitting control module and the motion module receiving control signals sent from the upper computer, respectively collect operation parameters of preset monitoring points in the first millimeter-wave receiving and transmitting control module, the second millimeter-wave receiving and transmitting control module and the motion module; respectively obtain parameter ranges associated with a module identifier of the first millimeter-wave receiving and transmitting control module and monitoring-point identifiers of the preset monitoring points of the first millimeter-wave receiving and transmitting control module, parameter ranges associated with a module identifier of the second millimeter-wave receiving and transmitting control module and monitoring-point identifiers of the preset monitoring points of the second millimeter-wave receiving and transmitting control module, parameter ranges associated with a module identifier of the motion module and monitoring-point identifiers of the preset monitoring points of the motion module; and respectively determine whether each of the operation parameters is in a corresponding parameter range, and then determine location information of a fault point according to the module identifiers and the monitoring-point identifiers if any of the operation parameters is not in a corresponding parameter range.

The above-mentioned solutions of the present disclosure, collects the operation parameters of the preset monitoring points in the target circuit modules of the human-body security-inspection device; obtains the parameter ranges according to module identifiers of the target circuit modules and monitoring-point identifiers of the preset monitoring points, wherein the parameter ranges are associated with the module identifiers and the monitoring-point identifiers respectively; and determines whether the operation parameters are in the parameter ranges respectively, and then determining location information of a fault point according to the module identifiers and the monitoring-point identifiers if any of the operation parameters is not in a corresponding parameter range. Thus, the present disclosure may constantly collect the operation parameters of the preset monitoring points in the target circuit modules, obtain the parameter ranges associated with the module identifiers of the target circuit modules and the monitoring-point identifiers of the preset monitoring points according to the module identifiers of the target circuit modules and the monitoring-point identifiers of the preset monitoring points, and determine the location information of the fault point according to the module identifiers and the monitoring-point identifiers if any of the operation parameters is not in the corresponding parameter range. Since the location point of the fault point is determined according to the module identifiers and the monitoring-point identifiers, thus the present disclosure may quickly locate which one of the monitoring points and which one of the circuit modules breaks down when the security-inspection device is not normally working, that is, it may quickly locate the position of the fault point, thus it is convenient in the maintenance and test work, and improve the efficiency of the maintenance and test work. Furthermore, the control device for the human-body security-inspection of the present disclosure may closed-cycle control the security-inspection device.

DETAILED DESCRIPTION

The technical solution of the embodiments of the present disclosure will be described more clearly and completely with reference to the accompanying drawings. Apparently, the embodiments described here only some exemplary embodiments, not all the embodiments. Based on the embodiments described in the present disclosure, one skilled in the art may acquire all other embodiments without any creative work. All these shall be covered within the protection scope of the present disclosure.

Referring toFIG. 1, a flow chart of a monitoring method for a human-body security-inspection device according to a first embodiment of the present disclosure is depicted. The method may include the following blocks.

At S101: collecting operation parameters of preset monitoring points in target circuit modules of the human-body security-inspection device.

In this embodiment, the operation parameters may be digital signals, analog signals and/or power-supply voltages.

At S102: obtaining parameter ranges according to module identifiers of the target circuit modules and monitoring-point identifiers of the preset monitoring points, wherein the parameter ranges are associated with the module identifiers and the monitoring-point identifiers respectively.

In this embodiment, the parameter ranges may be set in advance according to the actual needs, and may be set to be greater than set thresholds, smaller than set thresholds, or within preset ranges, respectively. The parameter ranges of the different preset monitoring points in the different target circuit modules may be different with each other, and each of the parameter ranges represents a parameter range of a corresponding preset monitoring point in the normal work.

Specifically, it may firstly determine the module identifier of each of the target circuit module and the monitoring-point identifier of each of the preset monitoring points, and then look up the parameter range corresponding to the determined module identifier and the determined monitoring-point identifier.

In this embodiment, it may pre-build the incidence relation among the module identifiers, the monitoring-point identifiers and the parameter ranges, and look up a parameter range corresponding to the determined module identifier and the determined monitoring-point identifier according to the incidence relation after determine the module identifier and the monitoring-point identifier.

Table 1 shows an incidence relation among the module identifiers, the monitoring-point identifiers and the parameter ranges. In a specific implementation, the incidence relationship among the module identifiers, the monitoring-point identifiers and the parameter ranges may be established according to the actual needs.

The present embodiment collects the operation parameters of the preset monitoring points in the target circuit modules of the human-body security-inspection device; obtains the parameter ranges according to module identifiers of the target circuit modules and monitoring-point identifiers of the preset monitoring points, wherein the parameter ranges are associated with the module identifiers and the monitoring-point identifiers respectively; and determines whether the operation parameters are in the parameter ranges respectively, and then determining location information of a fault point according to the module identifiers and the monitoring-point identifiers if any of the operation parameters is not in a corresponding parameter range. Thus, the present embodiment may constantly collects the operation parameters of the preset monitoring points in the target circuit modules, obtains the parameter ranges associated with the module identifiers of the target circuit modules and the monitoring-point identifiers of the preset monitoring points according to the module identifiers of the target circuit modules and the monitoring-point identifiers of the preset monitoring points, and determines the location information of the fault point according to the module identifiers and the monitoring-point identifiers if any of the operation parameters is not in the corresponding parameter range. Since the location point of the fault point is determined according to the module identifiers and the monitoring-point identifiers, thus the present disclosure may quickly locate which one of the monitoring points and which one of the circuit modules breaks down when the security-inspection device is not normally working, that is, it may quickly locate the position of the fault point, thus it is convenient in the maintenance and test work, and improve the efficiency of the maintenance and test work.

In one embodiment, the target circuit modules may include a first millimeter-wave receiving and transmitting control module, a second millimeter-wave receiving and transmitting control module, and a motion module.

In one embodiment, the operation parameters may include at least one of DC (direct-current) power-supply voltage, communication data, transmission frequencies, transmission powers, receiving frequencies, and receiving powers of the preset monitoring points in the first millimeter-wave receiving and transmitting control module and the second millimeter-wave receiving and transmitting control module, and may further include at least one of movement states, movement directions, movement velocities, movement angles, and extreme positions of the preset monitoring points in the motion module.

In one embodiment, the target circuit modules may further include a power-supply module, and the operation parameters may further include DC voltages of the preset monitoring points in the power-supply module.

In addition, in order to facilitate the user to view the location information of the fault point, in one embodiment, the monitoring method for the human-body security-inspection device of the present disclosure may further include: uploading the location information of the fault point to an upper computer for displaying.

Based on the above-mentioned first embodiment, the present disclosure further provides a monitoring system for a human-body security-inspection device in accordance with a second embodiment thereof. Referring toFIG. 2, a schematic view of the monitoring system for the human-body security-inspection device according to the second embodiment of the present disclosure is depicted. As shown inFIG. 2, the monitoring system for the human-body security-inspection device of this embodiment includes a data-collecting unit201, a data-processing unit202, and a fault-point position determining unit203.

The data-collecting unit201is configured to collect operation parameters of preset monitoring points in target circuit modules of the human-body security-inspection device.

The data-processing unit202is configured to obtain parameter ranges according to module identifiers of the target circuit modules and monitoring-point identifiers of the preset monitoring points, wherein the parameter ranges are associated with the module identifiers and the monitoring-point identifiers respectively.

The fault-point position determining unit203is configured to determine whether the operation parameters are in the parameter ranges respectively, and then determine location information of a fault point according to the module identifiers and the monitoring-point identifiers if any of the operation parameters is not in a corresponding parameter range.

In the monitoring system for the human-body security-inspection device of the present embodiment, it should be noted that, the above description of the monitoring system for the human-body security-inspection device is similar with that of the monitoring method for the human-body security-inspection device, thus it has the advantages same to those of the monitoring method, which will not be described herein to save space. Therefore, some technical details related to the monitoring system for the human-body security-inspection device of the present embodiment which are not disclosed, may be referred by the above description of the monitoring method for the human-body security-inspection device.

Based on the monitoring method and the monitoring system for the human-body security-inspection device of the above embodiments, the present disclosure further provides a control device for a human-body security-inspection device in accordance with a third embodiment thereof. Referring toFIG. 3, a schematic view of the control device for the human-body security-inspection device according to the third embodiment of the present disclosure is depicted.

As shown inFIG. 3, the control device for the human-body security-inspection device according to the third embodiment of the present disclosure includes a first millimeter-wave receiving and transmitting control module301, a second millimeter-wave receiving and transmitting control module302, a motion module303, an upper computer304, and a monitoring module305. The upper computer304is connected to the first millimeter-wave receiving and transmitting control module301, the second millimeter-wave receiving and transmitting control module302, the motion module303, and the monitoring module305respectively. The monitoring module305is further connected to the first millimeter-wave receiving and transmitting control module301, the second millimeter-wave receiving and transmitting control module302, and the motion module303respectively.

The monitoring module305is configured to, after the first millimeter-wave receiving and transmitting control module301, the second millimeter-wave receiving and transmitting control module302and the motion module303receives control signals sent from the upper computer304, respectively collect operation parameters of preset monitoring points in the first millimeter-wave receiving and transmitting control module301, the second millimeter-wave receiving and transmitting control module302and the motion module303; respectively obtain parameter ranges associated with a module identifier of the first millimeter-wave receiving and transmitting control module301and monitoring-point identifiers of the preset monitoring points of the first millimeter-wave receiving and transmitting control module301, parameter ranges associated with a module identifier of the second millimeter-wave receiving and transmitting control module302and monitoring-point identifiers of the preset monitoring points of the second millimeter-wave receiving and transmitting control module302, parameter ranges associated with a module identifier of the motion module303and monitoring-point identifiers of the preset monitoring points of the motion module303; and respectively determine whether each of the operation parameters is in a corresponding parameter range, and then determine location information of a fault point according to the module identifiers and the monitoring-point identifiers if any of the operation parameters is not in a corresponding parameter range.

In an embodiment as shown inFIG. 3, the control device for the human-body security-inspection device may further include a power-supply module306. The power-supply module306is connected to the first millimeter-wave receiving and transmitting control module301, the second millimeter-wave receiving and transmitting control module302, the motion module303, the upper computer304, and the monitoring module305respectively, for supplying the power to the first millimeter-wave receiving and transmitting control module301, the second millimeter-wave receiving and transmitting control module302, the motion module303, the upper computer304, and the monitoring module305.

The monitoring module305is further configured to, collect operation parameters of preset monitoring points in the power-supply module306; obtain parameter ranges associated with a module identifier of the power-supply module306and monitoring-point identifiers of preset monitoring points in the power-supply module306, and determine whether the obtained operation parameters of the preset monitoring points in the power-supply module306are within the corresponding parameter ranges respectively, and determine location information of a fault point according to the module identifier of the power-supply module306and the monitoring-point identifiers of the preset monitoring points in the power-supply module306if any of the obtained operation parameters of the preset monitoring points in the power-supply module is not within a corresponding parameter range.

When the human-body security-inspection device works, the power-supply module306supplies the power to the first millimeter-wave receiving and transmitting control module301, the second millimeter-wave receiving and transmitting control module302, the motion module303, the upper computer304, and the monitoring module305. The upper computer304sends out the instructions to the first millimeter-wave receiving and transmitting control module301, the second millimeter-wave receiving and transmitting control module302, the motion module303and the monitoring module305, such that the motion module303drives the first millimeter-wave receiving and transmitting control module301and the second millimeter-wave receiving and transmitting control module302to perform a rotating scan along a 120-degree cylinder surface respectively. When be rotated with a certain angle (such as, about 0.5 degrees), the motion module303sends out angle-incremental pulse signals to the first millimeter-wave receiving and transmitting control module301and the second millimeter-wave receiving and transmitting control module302, thus simultaneously, the first millimeter-wave receiving and transmitting control module301and the second millimeter-wave receiving and transmitting control module302emit millimeter-wave signals to irradiate a human body, then the millimeter-wave signals are reflected by the human body and collected by the first millimeter-wave receiving and transmitting control module301and the second millimeter-wave receiving and transmitting control module302, and data (where are derived from the millimeter-wave signal reflected by the human body) are transmitted to the upper computer304, such that the upper computer304performs three-dimensional imaging calculation for the millimeter-wave data and displays. The monitoring module305constantly monitors the operating statuses of the first millimeter-wave receiving and transmitting control module301, the second millimeter-wave receiving and transmitting control module302, the motion module303, the upper computer304and the power-supply module306, such that the monitoring module305may obtain location information of a fault point in time, and transmits the location information of the fault point to the upper computer304if obtaining the location information of the fault point.

Referring toFIG. 4, a schematic view of a detailed structure of a upper computer as shownFIG. 3according to an embodiment of the present disclosure is depicted. In one embodiment, as shown inFIG. 4, the upper computer304may include a first millimeter-wave receiving and transmitting control communication module401, a second millimeter-wave receiving and transmitting control communication module402, a motion communication module403, a monitoring communication module404, a status-displaying module405, a three-dimensional image computing module406, and an image-displaying module407. The first millimeter-wave receiving and transmitting control communication module401, the second millimeter-wave receiving and transmitting control communication module402and the image-displaying module407are respectively connected to the three-dimensional image computing module406. The status-displaying module405is connected to the monitoring communication module404.

In which, the first millimeter-wave receiving and transmitting control communication module401is configured to implement the communication between the upper computer304and the first millimeter-wave receiving and transmitting control module301. The second millimeter-wave receiving and transmitting control communication module402is used to implement the communication between the upper computer304and the second millimeter-wave receiving and transmitting control module302. The motion communication module403is configured to implement the communication between the upper computer304and the motion module303. The monitoring communication module404is configured to implement the communication between the upper computer304and the monitoring module305.

In which, the three-dimensional image computing module406may adopt a conventional three-dimensional image computing method, which will not be described herein. The image-displaying module407is configured to display a computing result from the three-dimensional image computing module406. The status-displaying module405is configured to display the operation parameters or the location information of the fault point, which are obtained by the monitoring module305.

In addition, as shown inFIG. 4, the upper computer304may further include a first power-supply interface409.

Referring toFIG. 5, a schematic view of a detailed structure of a first millimeter wave receiving and transmitting control module or a second millimeter-wave receiving and transmitting control module as shown inFIG. 3according to an embodiment of the present disclosure is depicted. In one embodiment, as shown inFIG. 5, each of the first millimeter-wave receiving and transmitting control module301and the second millimeter-wave receiving and transmitting control module302includes a first upper-computer communication interface501, a main control card502, a millimeter-wave transmitting control card503, a millimeter-wave receiving and transmitting assembly504, a millimeter-wave receiving control card505, a first monitoring interface506, a millimeter-wave transmitting analog switch array507, and a millimeter wave receiving analog switch array508. The main control card502is connected to the first upper-computer communication interface501, the millimeter-wave transmitting control card503, the millimeter wave receiving control card505and the millimeter wave receiving and transmitting assembly504respectively. The millimeter-wave transmitting analog switch array507is connected to a millimeter-wave transmitting antenna array, the millimeter-wave receiving and transmitting assembly504and the millimeter-wave transmitting control card503respectively. The millimeter-wave receiving analog switch array508is connected to a millimeter-wave receiving antenna array, the millimeter-wave receiving and transmitting assembly504, and the millimeter-wave receiving control card505respectively. The first upper-computer communication interface501is connected to the main control card502. The first monitoring interface506is connected to the main control card502, the millimeter-wave transmitting control card503, the millimeter-wave receiving and transmitting assembly504, the millimeter-wave receiving control card505, the millimeter-wave transmitting analog switch array507, and the millimeter wave receiving analog switch array508respectively.

In which, the main control card502, the millimeter-wave transmitting control card503, the millimeter-wave receiving and transmitting assembly504, the millimeter-wave receiving control card505, the millimeter-wave transmitting analog switch array507, and the millimeter-wave receiving analog switch array508, which are connected to the first monitoring interface506, are used as monitored objects in the first millimeter-wave receiving and transmitting control module301and/or the second millimeter-wave receiving and transmitting control module302, that is, the above-mentioned preset monitoring points.

In order to save the hardware cost, in one embodiment, the first millimeter-wave receiving and transmitting control module301and the second millimeter-wave receiving and transmitting control module302may share the same first upper-computer communication interface501, the same main control card502, and the same millimeter-wave transmitting control card503, the same millimeter-wave receiving and transmitting assembly504and the same millimeter-wave receiving control card505.

Furthermore, as shown inFIG. 5, each of the first millimeter-wave receiving and transmitting control module301and the second millimeter-wave receiving and transmitting control module302, may further include a second power-supply interface509.

Specifically, the main control card502may adopt a FPGA, DSP, or ARM chip as a CPU thereof, and the main control card502is communicated with the millimeter-wave transmitting control card503or the millimeter-wave receiving control card505by means of the RS485 communication or the direct digital communication. The main control card502may control the scanning frequency of the millimeter-wave receiving and transmitting assembly504in a range (e.g., 20 GHz-30 GHz), that is, it may be controlled by a VCO (voltage-controlled oscillation source) controlling means which a high-speed D/A chip with 14 bits (or more). The main control card502further controls the transmit power of the millimeter-wave transmitting antenna array. Radio-frequency signals received by the millimeter-wave receiving antenna array are down-converted to intermediate-frequency signals by the millimeter-wave receiving and transmitting assembly504, then are I/Q demodulated and amplified, and finally collected by the high-speed high-bandwidth D/A chip with 14 bits.

The millimeter-wave receiving and transmitting assembly504performs the operation, such as, generating the millimeter-wave scanning signals (e.g., 20 GHz-30 GHz), IQ modulating and power amplify the millimeter-wave scanning signals, converts the received millimeter-wave signals into intermediate-frequency signals, and transmits the converted intermediate-frequency signals to the main control card502.

The millimeter-wave transmitting control card503and the millimeter-wave receiving control card505may adopt a programmable device, such as CPLD, FPGA, ARM, and DSP, as a CPU to achieve the communication with the main control card502and time-gating control the millimeter-wave transmitting analog switch array507and the millimeter-wave receiving analog switch array508.

The millimeter-wave transmitting analog switch array507may be consisted of 12 pieces of SP (single-pole) 16T (throw) RF (radio frequency) switches and 2 pieces of SP 12T RF switches.

The millimeter-wave receiving analog switch array508may be consisted of 12 pieces of SP 16T RF switches and 2 pieces of SP 12T RF switches. Since it needs to receive the weak millimeter-wave signals, thus the millimeter-wave receiving analog switch array508generally further includes a low-noise operational amplifier so as to amplify the signals.

The millimeter-wave transmitting antenna array generally includes at least 192 millimeter-wave antennas, and the millimeter wave receiving antenna array generally includes at least 192 millimeter-wave antennas.

Referring toFIG. 6, a schematic view of a detailed structure of a motion module as shown inFIG. 3according to an embodiment of the present disclosure is depicted. In one embodiment, as shown inFIG. 6, the motion module303includes a second upper-computer communication interface601, a first control card602, a servo motor driver603, a second monitoring interface604, a photoelectric switch605, a servo motor606, and a grating encoder607. The first control card602is connected to the second upper-computer communication interface601, the servo motor driver603, the photoelectric switch605and the grating encoder607respectively. The servo motor606is connected to the servo motor driver603, and the second monitoring interface604is connected to the first control card602, the servo motor driver603and the grating encoder607respectively.

In which, the first control card602, the servo motor driver603, and the grating encoder607, which are connected to the second monitoring interface604, are monitored objects in the motion module303, that is, the above-mentioned preset monitoring points.

In addition, as shown inFIG. 6, the motion module303may further include a third power-supply interface608.

Specifically, the third power-supply interface608is configured to provide the power to the motion module303. When the human-body security-inspection device works, the first control card602receives the instruction from the upper computer304via the second upper-computer communication interface601, and controls the servo motor driver603to drive the servo motor606to rotate. The grating encoder607constantly feeds back rotation angle information of the motor to the first control card602, and simultaneously transmits the angle-incremental pulse signals to the first millimeter-wave receiving and transmitting control module301and the second millimeter-wave receiving and transmitting control module302, so as to simultaneously emit and collect the millimeter-wave signals. The second monitoring interface604transmits the status information of each component in the motion module303to the monitoring module305. The photoelectric switch605is configured to monitor the left/right extreme position of rotating the servo motor606, and locate a starting position of the servo motor606in time while the human-body security-inspection device is powered on.

The first control card602generally adopt a PLC-control device, and alternatively, it also may adopt a programmable device, such as CPLD, FPGA, ARM, DSP, as a CPU to communicate with the upper computer301, and the communication method may be USB, LAN, PCI, RS232, RS485, and the like.

Referring toFIG. 7, a schematic view of a detailed structure of a monitoring module as shown inFIG. 3according to an embodiment of the present disclosure is depicted. In one embodiment, as shown inFIG. 7, the monitoring module305may include a third upper-computer communication interface701, a second control card702, and an analog switch array703which are connected in series, and further include a first millimeter-wave receiving and transmitting control-module monitoring interface704, a second millimeter-wave receiving and transmitting control-module monitoring interface705, and a motion-module monitoring interface706which are respectively connected to the analog switch array703.

Furthermore, as shown inFIG. 7, the monitoring module305may further includes at least one of a status-displaying module707, a fourth power-supply interface708, and a power-supply-module monitoring interface709.

Specifically, when the human-body security-inspection device works, the second control card702receives the instruction sent from the upper computer304via the third upper-computer communication interface701, and controls the analog switch array703to turn on the first millimeter-wave receiving and transmitting control-module monitoring interface704, the second millimeter-wave receiving and transmitting control-module monitoring interface705and the motion-module monitoring interface in series or in a preset sequence for monitoring the information of the operation parameters of the first millimeter-wave receiving and transmitting control module301, the second millimeter-wave receiving and transmitting control module302and the motion module303. If any one of the operation parameters is not within a corresponding parameter range, the second control card702determines the location information of the fault point, transmits the location information of the fault point to the status-displaying module707for displaying, and simultaneously, sends the location information of the fault point to the upper computer304via the third upper-computer communication interface701.

The analog switch array703is consisted of a plurality of low-frequency analog switches.

The status-displaying module707may use LED lights to indicate corresponding statuses of the monitoring points respectively, and alternatively, it also may an 8-bit LED digital tube, or a display screen to display corresponding codes of fault points.

Referring toFIG. 8, a schematic view of a detailed structure of a power-supply module as shown inFIG. 3according to an embodiment of the present disclosure is depicted. In one embodiment, as shown inFIG. 8, the power-supply module306may include an AC (alternative current) power-supply interface801(e.g., a 220V AC power-supply interface), a power-supply switch802, a fuse803, a filter804, and a switch power-supply module805which are connected in series, and may further include a first millimeter-wave receiving and transmitting control-module power-supply interface806, a second millimeter-wave receiving and transmitting control-module power-supply interface807, a motion-module power-supply interface808, and a monitoring-module power-supply interface809which are connected to the switch power-supply module805. In addition, the power-supply module306may further include a upper-computer power-supply interface810connected with the filter805, and a third monitoring interface811connected with the switch power-supply module805. For the actual needs, the power-supply module306may further include an other AC power-supply interface812arranged therein and configured to provide the power to other AC device, such as a light, cooling fan, or display screen of the human-body security-inspection device.

In which, the switch power-supply module805connected with the third monitoring interface811is the monitored object in the power-supply module306, that is, the above-mentioned preset monitoring point.

It should be noted that, the power-supply module306as shown inFIG. 8is justly an example, in fact, it will be easy understood for persons skilled in the art that, the power-supply module may only include parts of the device or modules therein according to the actual needs.

Before the human-body security-inspection device works, the AC current passes through the AC power-supply interface801, the power-supply switch802, the fuse803, the filter804, and the switch power-supply module805, to provide the power to the upper computer304, the first millimeter-wave receiving and transmitting control module301, the second millimeter-wave receiving and transmitting control module302, the motion module303, the monitoring module305, and other AC devices.

In detailed, the present disclosure may select some or all of the upper computer304as shown inFIG. 4, the first millimeter-wave receiving and transmitting control module301and/or the second millimeter-wave receiving and transmitting control module302as show inFIG. 5, the motion module303as shown inFIG. 6, the monitoring module305as shown inFIG. 7, and the power-supply module306as shown inFIG. 8to cooperatively work. Alternatively, the present disclosure may only select one of the above-mentioned modules to work. When cooperatively working, the first millimeter-wave receiving and transmitting control-module monitoring interface704, the second millimeter-wave receiving and transmitting control-module monitoring interface705, the motion-module monitoring interface706, and the power-supply-module monitoring interface709are connected to the first monitoring interface506in the first millimeter-wave receiving and transmitting control module301, the first monitoring interface506in the second millimeter-wave receiving and transmitting control module302, the second monitoring interface604, and the third monitoring interface811in the power-supply module306respectively. The upper-computer power-supply interface810is connected to the first power-supply interface409. The first millimeter-wave receiving and transmitting control-module power-supply interface806, the second millimeter-wave receiving and transmitting control-module power-supply interface807, the motion-module power-supply interface808, and the monitoring-module power-supply interface809are connected to the second power-supply interface509in the first millimeter-wave receiving and transmitting control module301, the second power-supply interface509in the second millimeter-wave receiving and transmitting control module302, the third power-supply interface608, and the fourth power-supply interface708respectively.

In a specific implementation, the above-mentioned main control card505, the first control card602, and the second control card702may be achieved by a programmable control card. The programmable control card may adopt a PLC-control means, and alternatively, it also may adopt a programmable device, such as CPLD, FPGA, ARM, or DSP, as a CPU thereof. The upper computer304may be communicated with the first millimeter-wave receiving and transmitting control module301, the second millimeter-wave receiving and transmitting control module302, the motion module303, and the monitoring module305by a high-speed communication means, such as USB, LAN, and PCI, etc.

The above-mentioned first millimeter-wave receiving and transmitting control module301, the second millimeter-wave receiving and transmitting control module302, the motion module303, the upper computer304, the monitoring module305, and the power-supply module306may be independent modules respectively, which are capable of being easy to extend the functions thereof, and being convenient to debug, repair and maintain the human-body security-inspection device, while guaranteeing the performance of the test data.

The monitoring module305is an independent module, thus it can constantly closed-loop monitor the first millimeter-wave receiving and transmitting control module301, the second millimeter-wave receiving and transmitting control module302, the motion module303, and the power-supply module306, without influencing the test effect of the human-body security-inspection device.

The technical features of the above-mentioned embodiments may be combined arbitrarily. To make the description succinct, the present disclosure does not describe all of the possible combinations of the technical features in the above-mentioned embodiments. However, if any combination of these technical features is no contradiction therein, it should be considered that the combination is within the scope of this specification.

The above-mentioned embodiments merely represent several examples of the present disclosure, and the description thereof is more specific and detailed, but it should not be considered as limitations to the scope of the present disclosure. It should be noted that, for those skilled in the art, various variations and improvements may be made without departing from the concept of the present disclosure and are all within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the appended claims.