CN102884449A - Passenger scanning systems for detecting contraband - Google Patents

Abstract

A passenger scanning system includes a passenger screening area configured for a person to enter and a shield surrounding at least a portion of the passenger screening area. The shield is configured to reduce a radio frequency interference within the passenger screening area. The passenger scanning system also includes one or more sensors positioned in the passenger screening area at a height configured to be proximate one or more of an abdominal region, a groin region, and a pelvic region of the entered person. The sensors are configured to generate a signal in response to a target substance located in the one or more of the abdominal region, the groin region, and the pelvic region.

Description

Passenger scans system for detection of the thing of violating a ban

The cross reference of related application

The application requires the Application No. 61/300 of submission on February 2nd, 2010,778 and 61/300,779, the Application No. 61/301 that on February 4th, 2010 submitted to, 343 and 61/301,465, the Application No. 61/303 that on February 10th, 2010 submitted to, 232, the Application No. 61/304 that on February 15th, 2010 submitted to, 724, the Application No. 61/322 that on April 8th, 2010 submitted to, the Application No. 12/820 that on June 22nd, 081 and 2010 submitted to, 457 rights and interests, all these patented claims all are incorporated in this in full with for referencial use.

Technical field

The embodiments described herein relates generally to the check system that is used to the supervisory personnel, and more particularly relates to the check system that is configured to for the target item supervisory personnel.

Background technology

U.S. transportation safety office (TSA) authorizes recently and implements more narrow examination rules by tourism industry, carries the possibility that violated thing (such as weapon, explosive and/or other the violated things hidden) is climbed up the means of transport such as aircraft in order to reduce the passenger.For the ease of preventing that the passenger from carrying violated thing (such as weapon, explosive and/or other the violated things hidden) aboard, TSA requires before climbing up means of transport all passengers to be carried out screening and/or inspection.

In some known check systems, the passenger to the terminal that arrives at the airport checks by the trace detection system.Whether the trace detection system can detect and analyze particle and/or the material that obtains from personnel, once approached with prohibited items in order to determine described personnel.But such system possibly can't detect the prohibited items that are hidden under the multilayer clothing or are hidden in bodily cavity inside.

In some known check systems, make the passenger of the terminal that arrives at the airport stand whole body imaging.Whole body imaging system (such as millimeter wave (MMW) and X ray backscattering (XRB) system) provides the picture that may be hidden in the article outside the clothing.But the whole body imaging system possibly can't detect all article.

Some known check systems are in walk-through or enter in the floor of formula device and adopt nuclear quadrupole resonance (NQR) sensor.Along with the passenger stand in the middle body of described device, the NQR sensor operates to detect in the middle of passenger's footwear, socks or the clothes items or the prohibited items on it.But such device is the most effective at the violated object space face that detection is positioned at passenger's lower limb place.For instance, at least some utilized the known check system of inductosyn adopted multiple technologies with system mask in external noise.Wherein a kind of technology is that sensor is encapsulated in the chamber that connects electricity and ground connection fully.The another kind of technology that is usually used in the NQR sensor is that sensor is placed in the sealing cover, and wherein said sealing cover has the waveguide tunnel at the entrance and exit place of the check system of being placed on.Configuration has although it is so obtained considerable success in many aspects, but it is checking that the use aspect human is restricted, and this is because some people feels vigilant or uncomfortable for coming into and stand in the enclosure space.

In addition, a kind of known check point system at first utilizes whole body walk-through metal detector (WTMD) that the passenger is carried out screening.In such check point system, threaten article or when unusual, then the passenger is directed to detector bar inspection post (wanding station) when detecting from body scan, it is the physical arrangement that the control passenger advances.It is important, if detect threat article or unusual by body scan, then the passenger can be considered as threatening.His/her moves the control of the structure that just is subject to the detector bar inspection post like this.In this controlled structures or in its exit, the security staff can use the metal detection detector bar that passenger's health is implemented localization scanning in order to solve alarm.If the passenger is subsequently by clarification suspicion, then he/her can continue the physical arrangement by the detector bar inspection area.But also there is restriction in such system.

For instance, QR sensor or QR detector bar for example are restricted relating to aspect the dynamic range of the RFI reference of QR sensor and motion.In addition, in the situation in a plurality of RFI source, be restricted on such theoretical method, and in airport installation, just this situation may occur.The QR detector bar also may be restricted aspect formula (sweeping) scanning sweeping, and wherein will come by sweeping the QR detector bar the whole part on scan patients health or ground.In addition, known QR detector bar operates near on-the-spot ambient temperature or its usually, thereby can limit the precision of utilizing the data that such QR detector bar obtains.For instance, known QR detector bar operates under the nominal operation frequency that is associated with the room temperature in place usually, thereby may limit the precision of the data of utilizing such QR detector bar acquisition.Therefore be desirable to provide the QR sensing system that overcomes the difficulty that is associated with known QR detector bar.

Implantable medical device is designed to small and light as far as possible, keeps simultaneously the longest as far as possible battery.Therefore such medical device uses the low-down electronic installation of power, this means low voltage operating and finite frequency response for active block (for example operational amplifier).The combination of low voltage operating and finite frequency response may cause the susceptibility of the increase of active block generation high frequency overload, so can disturb the correct running of total device.

A kind of alternative is that low-pass filter is placed in the outside connection of medical device, so that blocking-up is from the cellular interference that operates under the frequency that is higher than approximate 0.5GHz.But these wave filters can and become larger along with the blocking frequency reduction.Because the QR frequency is usually low 1,000 times than the employed frequency of cell phone, thereby therefore described wave filter will become excessive and can't together use with medical device.In general, the passenger who wears or carry medical device can be apprised of with medical device and be exposed to the risk that common imaging or scanning system are associated.The passenger can also carry and show that described passenger should not be subject to causing the card of negative interactional safety check scanning.But aphasis, carelessness or misunderstanding all may cause passenger's exposure undesirably.

Summary of the invention

In one aspect, a kind of passenger scans system comprises and being configured to so that passenger's screening zone that personnel enter and around the shielding part of at least a portion in passenger's screening zone that wherein said shielding part is configured to reduce the Radio frequency interference (RFI) in passenger's screening zone.Described system also comprises one or more sensors, in them each in the middle of the belly, groin and the pelvic area that are configured to the contiguous personnel that enter one or the At The Height of more are placed in passenger's screening zone, and wherein said one or more sensors are configured in response to one or the target substance generation signal of more being arranged in the middle of belly, groin and the pelvic area.

On the other hand, a kind of passenger scans system comprises at least one wall and is coupled to the platform of described wall, thereby limits the seat that is configured to the support personnel.Described system also comprises detection system, and described detection system comprises at least one inductosyn that the described personnel's that are configured to detect the existence that shows target substance magnetic field changes.

On the other hand, a kind of passenger scans system comprise the first side wall and with the second sidewall of the first side wall position relative positioning, thereby limit a passage along the mid-plane of passenger scans system and between the first and second sidewalls.Described system also comprise be positioned at passage and be in mid-plane the first side the first current branch and be positioned at passage and be in the second current branch of second side relative with the first side of mid-plane, wherein the first current branch and the second current branch have antisymmetric current flowing.Described system also comprises the safety device that is configured to limit the intrasystem heating undesirably of passenger scans.

On the other hand, a kind of screening device comprise be configured to frequency that normal human subject body temperature is associated under radio frequency (RF) energy is applied to transmitting coil in passenger's the region of interest, and be configured to detect in response to representing the passenger with it or the receiving coil of the energy perturbation of the RF energy of medical device in the body.

Description of drawings

Fig. 1 shows the abdomen scanning device system that comprises passenger's screening zone.

Fig. 2 is the skeleton view of abdomen scanning device system that is merged into the part of passenger's screening system.

Fig. 3 is the top view of abdomen scanning device system that is merged into the part of passenger's screening system.

Fig. 4 is the top view of abdomen scanning device system that is merged into the part of passenger's screening system.

Fig. 5 is a kind of skeleton view of abdomen scanning device system of replacement.

Fig. 6 is the top view of the abdomen scanning device system shown in Fig. 5.

Fig. 7 is the schematic block diagram of the exemplary electrical framework that can use with the abdomen scanning device system shown in Fig. 5 and 6.

Fig. 8 is the synoptic diagram of the exemplary inductosyn that can use with the abdomen scanning device system shown in Fig. 5 and 6.

Fig. 9,10 and 11 is respectively skeleton view, side view and the end-view of lower limb scanner system.

Figure 12 is the end-view of the scanner system shown in Fig. 9-11, has wherein omitted inductosyn in order to the sensor outer cover is shown.

Figure 13 A and 13B are the synoptic diagram of depicting the main electric component of the inductosyn that can use with the scanner system shown in Fig. 9-12.

Figure 14 is the fragmentary cross-sectional view of the system shown in Fig. 9-11, and wherein inductosyn is placed in the sensor outer cover.

Figure 15 A and 15B are the synoptic diagram of main electric component of depicting the inductosyn of a kind of replacement that can use with the scanner system shown in Fig. 9-12.

Figure 16 is the fragmentary cross-sectional view of the scanner system shown in the Fig. 9-11 that comprises the inductosyn shown in Figure 15 A and the 15B.

Figure 17 A and 17B are the synoptic diagram of depicting the main electric component of the another kind of inductosyn of replacing.

Figure 18 is the fragmentary cross-sectional view of the scanner system shown in the Fig. 9-11 that comprises the inductosyn shown in Figure 17 A and the 17B.

Figure 19 is the end-view of the scanner system shown in the Fig. 9-11 that comprises optional metal detector.

Figure 20 is the skeleton view that is adapted to the lower limb scanner system of using a kind of replacement in the multisensor check system.

Figure 21 and 22 is respectively skeleton view and the end-view of multisensor check system.

Figure 23 is the sectional view of the multisensor check system shown in Figure 21 and 22 of obtaining of the line 15-15 in Figure 22.

Figure 24,25 and 26 is respectively a kind of skeleton view, side view and end-view of lower limb scanner system of replacement.

Figure 27 is the top view of the part of the scanner system shown in Figure 24-26, wherein shows the relative positioning of left current branch and right current branch.

Figure 28 is the side view of the inductosyn shown in Figure 24-26.

Figure 29 is the fragmentary cross-sectional view of the scanner system shown in Figure 24-26.

Figure 30 is the block scheme that can be implemented to control, manage, operate and monitor the system of the various inspections shown in Fig. 9-29 and detection system.

Figure 31,32 and 33 comprises that the walk-through of four utmost points (QR) check system detects skeleton view, top view and the end-view of door.

Figure 34 is the sectional view that the walk-through shown in Figure 31-33 of obtaining of the line 26-26 in Figure 33 detects door.

Figure 35 is the decomposition diagram of another embodiment of shoe scanning device system that is merged into the part of passenger scans system.

Figure 36 is the skeleton view of another embodiment of shoe scanning device system that is merged into the part of passenger scans system.

Figure 37 is the skeleton view that can be used to for target substance scanning staff's detector bar inspection post.

Figure 38 is the amplifier section view in the detector bar inspection post shown in the Figure 37 that obtains at regional 38 places.

Figure 39 is the vertical view in the detector bar inspection post shown in Figure 37.

Figure 40 is the side view in the detector bar inspection post shown in Figure 39 of obtaining of online 5-5.

Figure 41 is a kind of vertical view of detector bar inspection post of replacement.

Figure 42 is the side view in the detector bar inspection post shown in Figure 41 of obtaining of online 7-7.

Figure 43 is the skeleton view of the detector bar that can use with the detector bar inspection post shown in Figure 41 and 42.

Figure 44 is the skeleton view of the frame that can use with the detector bar inspection post shown in the detector bar inspection post shown in Figure 37-39 and/or Figure 41 and 42.

Figure 45 is the synoptic diagram of the trace detection system that can use with the detector bar inspection post shown in the detector bar inspection post shown in Figure 37-39 and/or Figure 41 and 42.

Figure 46 is the schematic top view of exemplary inspection check point.

Figure 47 shows the exemplary screening device that can use with the inspection check point shown in Figure 46.

Figure 48 is the synoptic diagram of the exemplary electrical framework of the screening device shown in Figure 47.

Figure 49 is the exemplary mutual synoptic diagram between the screening device shown in Figure 47 and the passenger.

Figure 50 shows the process flow diagram of screening passenger's illustrative methods.

Embodiment

Here described and comprised the scanner system that is oriented to find the inductosyn that is positioned at passenger's body inside or near the violated thing it.For instance, the embodiment of described scanner system can detection of concealed in passenger's belly, pelvis and/or inguinal region (such as between two legs that are hidden in the passenger or bodily cavity inner) violated thing.Here employed term " violate a ban thing " any other article of referring to Illicit Drug, explosive, arcotic, weapon, threat article and/or not allowing personnel in the restricted area such as the airport, to hold.Alternatively, the embodiment of described scanner system can detect near the foot that is arranged in the passenger or be positioned at the violated thing of passenger's footwear.

Fig. 1-4 shows the first embodiment for detection of the abdomen scanning device system that is positioned at passenger's body or near violated thing.

Fig. 1 shows the abdomen scanning device system 100 that comprises passenger's screening zone 102.The passenger 104 who is scanned is positioned at passenger's screening zone 102.One or more sensors 106 are placed on the height of the belly height of the approximate revenue passenger of expection.Each sensor 106 can utilize the inductosyn of any type to implement, comprising NQR sensor, nuclear magnetic resonance (NMR) sensor, metal detection sensor etc.For the purpose of convenience, describe each embodiment with reference to the sensor 106 that is implemented as the NQR sensor, but such description is equally applicable to the inductosyn of other types.

In certain embodiments, can regulate the height of one or more sensors 106 in order to mate each passenger's 104 belly height.In certain embodiments, the belly height is defined as being similar to the distance of extending between passenger's knee and chest.Because passenger's screening usually occurs in the environment with serious Radio frequency interference (RFI), therefore locate shielding parts 108 around passenger's screening zone 106 in certain embodiments, in order to improve signal to noise ratio (S/N ratio).Shielding part 108 can comprise the floor (not shown) that connects in passenger's screening zone 106 and the current-carrying plate of ceiling (not shown).In certain embodiments, the characteristic length R of shielding part 108 ₁Characteristic length R less than shielding part 108 ₂

In described exemplary embodiment, sensor 106 is operated near normal human subject body temperature or its, namely approximate 37.0 ℃.But in certain embodiments, sensor 106 is operated in certain normal human subject body temperature, such as adding deduct approximate six degrees centigrade.Correspondingly, in this exemplary embodiment, sensor 106 is operated under the operating frequency that is associated with normal human subject body temperature.But in certain operational frequency range that in certain embodiments, sensor 106 is operated in the certain temperature range that comprises normal human subject body temperature is associated.For instance, in certain embodiments, the operating frequency of sensor 106 is by every degree centigrade of 100Hz of offset approximation.In addition, in certain embodiments, the operating frequency of sensor 106 is reversed skew about temperature.For instance, the operating frequency of sensor 106 raises along with temperature and reduces.In one embodiment, the operating frequency of sensor 106 is controlled operator's control at system 110 places.In addition, in certain embodiments, sensor 106 can operate under a plurality of frequencies.For instance, sensor 106 can initial manipulation under the safe mode of using lower-wattage in order to detect medical device, and can operate in subsequently under the detecting pattern that uses higher-wattage in order to detect the thing of violating a ban.

During scan process, each sensor 106 can provide radio frequency excitation signal and pick up the resulting signal of the existence that shows the thing of violating a ban.For instance, each sensor 106 can be the NQR sensor, and it is usually providing radio frequency excitation signal under the frequency corresponding to the predetermined characteristic NQR frequency of target unauthorized substances.Each sensor 106 as the NQR sensor can also serve as pick-up winding, so that any resulting NQR signal that the violated thing that detection is hidden from passenger 104 sends.These signals can be sent to any suitable calculating device to process and to analyze.Therefore abdomen scanning device system 100 can be with the non-ionising radiation of safety with the specific chemical constitution of the thing of violating a ban as target.

Each sensor 106 can utilize two antisymmetry current branch 112 and 114 to implement.Term " antisymmetry " refers to the flow through direction opposite situation basically of current branch 114 of direction and the electric current of current branch 112 of sensor 106 of flowing through of electric current wherein, and the arrow in Fig. 1 is indicated.That described antisymmetry current flowing produces greatly decay and have contiguous abdomen area (the comprising bodily cavity) physical features of placing that is particularly suitable for checking passenger 104 reversed magnetic field.

In certain embodiments, described one or more sensor 106 comprises two sensors 106 that are positioned at relative to one another as shown in Figure 1 passenger's screening zone 102.In other embodiments, described one or more sensor 106 comprises that two sensor 106(that are separated from each other between zero to 180 degree are not shown in passenger's screening zone 102).These settings of two sensors 106 have and reduce abdomen scanning device system 100 for the susceptibility of Radio frequency interference (RFI) and with the effect at the interested belly of the susceptibility target alignment position of abdomen scanning device system 100.Additionally or alternatively, in certain embodiments, one or more sensors 106 have than tightr current branch 112 and the current branch 114 together in position in the heritage inductive transducer, in order to produce less, the coil system of concentration of local more that has high s/n ratio more than heritage inductive transducer.

Fig. 2 and 3 shows the alternative embodiment of the abdomen scanning device system shown in Fig. 1, and wherein abdomen scanning device system 100 is merged into the part of passenger's screening system 116.Fig. 2 is that skeleton view and the Fig. 3 of abdomen scanning device system 100 that is merged into the part of passenger's screening system 116 is its top view, comprising MMW whole body imaging system 118.Although passenger's screening system 116 is shown as comprising MMW whole body imaging system 118, but it also can comprise or alternatively comprise in the middle of the following one or more: XRB whole body imaging system, the trace detection system, the metal detector system, detector bar detector system, perhaps other passenger's screening devices.In addition, abdomen scanning device system 100 is shown as physically being integrated in the MMW whole body imaging system 118, but in the embodiment that replaces, abdomen scanning device system 100 can be in passenger's screening system 116 in the position that separates of some or all of other systems.

Passenger 104 stand in passenger's screening zone 102.Passenger's screening zone 102 conductively-closed parts 108 center on.As shown in Figure 2, shielding part 108 can be made of trnaslucent materials in order to alleviate the perception of 104 pairs of sealings of passenger at least in part.In certain embodiments, shielding part 108 comprises the aluminium honeycomb structure.

MMW whole body imaging system 118 is placed between shielding part 108 and the passenger 104.MMW whole body imaging system 118 is configured to provide the picture of the article under the clothing that may be hidden in passenger 104.In MMW whole body imaging system 118 inside the one or more sensors 106 that respectively comprise current branch 112 and current branch 114 are arranged.Sensor 106 is placed with contiguous passenger 104, in order to improve the sensitivity of abdomen scanning device system 100 and the interference of restriction MMW whole body imaging system 118 and sensor 106.In addition, although sensor 106 is placed between MMW whole body imaging system 118 and the passenger 104, but in certain embodiments, because the compact size of sensor 106, sensor 106 only produce very little " shade " or crested zone in the whole body image that is produced by MMW whole body imaging system 118.Therefore, abdomen scanning device system 100 can integrate in order to reduce the areal coverage in passenger's screening zone 102 with MMW whole body imaging system 118.

In addition, in certain embodiments, abdomen scanning device system 100 and MMW whole body imaging system 118 operate simultaneously.Therefore, abdomen scanning device system 100 can integrate with MMW whole body imaging system 118, for violated thing passenger 104 is carried out the required time of screening in order to shorten.In alternative embodiment, abdomen scanning device system 100 and MMW whole body imaging system 118 sequentially operate.

Fig. 4 is another alternative embodiment of the abdomen scanning device system shown in Fig. 1.Specifically, Fig. 4 is the top view of abdomen scanning device system 100 that is merged into the part of passenger's screening system 116, comprising XRB whole body imaging system 120.Passenger 104 stand in passenger's screening zone 102.Each sensor 106 is placed with contiguous passenger 104, in order to improve the sensitivity of abdomen scanning device system 100 and the interference of restriction XRB whole body imaging system 120 and sensor 106.In addition, although sensor 106 is placed between XRB whole body imaging system 120 and the passenger 104, but in certain embodiments, because the compact size of sensor 106, sensor 106 only produce very little " shade " or crested zone in the whole body image that is produced by XRB whole body imaging system 120.In addition, as shown in Figure 4, in certain embodiments, thereby shielding part 108 enough can not reduce the quality of the image that is produced by XRB whole body imaging system 120 between the slim passenger of being placed on 104 and the XRB whole body imaging system 120.For instance, in certain embodiments, shielding part 108 is equivalent to the sheet of aluminium foil.Therefore, abdomen scanning device system 100 can integrate in order to reduce the areal coverage in passenger's screening zone 102 with XRB whole body imaging system 120.

In addition, in certain embodiments, abdomen scanning device system 100 and XRB whole body imaging system 120 operate simultaneously.Therefore, abdomen scanning device system 100 can integrate with XRB whole body imaging system 120, for violated thing passenger 104 is carried out the required time of screening in order to shorten.In alternative embodiment, abdomen scanning device system 100 and XRB whole body imaging system 120 sequentially operate.

Fig. 5 is the skeleton view of another alternative embodiment of belly system 100, and Fig. 6 is the top view of the abdomen scanning device system 100 of described replacement.In this exemplary embodiment, system 100 comprises at least one pattern 122 as explosive and/or arcotic detection system.In certain embodiments, system 100 also comprises the second pattern (not shown) as metal detection system.The example of the second pattern comprises (but being not limited to only comprise) mm-wave imaging technology, backscattering imaging technique or trace detection technique.In this exemplary embodiment, system 100 also comprises at least one computing machine (not shown among Fig. 5 and 6) and with the communication bus (not shown among Fig. 5 and 6) of pattern 122 and described computing machine coupling.Described bus allows operator command and input are input to computing machine and are sent to pattern 122.In addition, described bus allows the output such as detecting data that is generated by pattern 122 is sent to computing machine to analyze.In certain embodiments, described computing machine comprises one or more computer-readable recording mediums, but stores on it be used to computing machine executive module or the instruction of implementing operation as described herein.

In described exemplary embodiment, pattern 122 and computing machine are provided in single outer cover or the seat 124.In an alternative embodiment, pattern 122 and computing machine are separately laid, and distort in order to prevent.In such embodiments, pattern 122 is provided in the seat 124.In this exemplary embodiment, system 100 comprises the first wall 126 with first terminal 128 and second end 130, and the second wall 132 of placing substantially parallelly and comprise first terminal the 134 and second end 136 with the first wall 126.The first wall 126 and the second wall 132 respectively are formed arc, and its radius is approximately the height of each wall 126 and 132.In addition, system 100 comprises the 3rd wall 138 of substantially perpendicularly placing and extend to from the second end 130 the second end 136 with the first and second walls 126 and 132.In addition, system 100 comprises the wall face 140 of placing with the 3rd wall 138 substantially parallelly.Wall face 140 extends between the first and second walls 126 and 132, and is placed between first terminal 128 and 134 and second terminal 130 and 136.System 100 also is included in the floor 142 of extending between the first and second walls 126 and 132.Also extend from first terminal 128 and 134 towards wall face 140 on floor 142.

In this exemplary embodiment, system 100 also is included in the platform 144 that extends and extend between the first and second walls 126 and 132 between the third and fourth wall 138 and 140, thereby platform 144 is placed to parallel with floor 142.In addition, in this exemplary embodiment, platform 144 comprises inductosyn device (not shown among Fig. 5 and 6), and the back will be described in more detail.The first wall 126, the second wall 132 and the 3rd wall 138 limit an opening, and it allows the passenger to enter and leave seat 124 by same opening.In addition, the first wall 126, the second wall 132, the 3rd wall 138 and platform 144 limit the seat 124 that allows the passenger to sit down in scan period.In an alternative embodiment, the first wall 126, the second wall 132 and the 3rd wall 138 are created integral to, and limit seat 124 thereby combine with platform 144.For instance, the first wall 126, the second wall 132 and the 3rd wall 138 can form basically arc, such as parabola shaped.

Fig. 7 is the block scheme of the exemplary electrical framework 146 of abdomen scanning device system 100.In this exemplary embodiment, abdomen scanning device system 100 comprises the pattern 122 of utilizing quadrupole resonance (QR) detection system 148 specific implementations.System 100 also comprises computing machine 150 and the alarm 152 of being coupled to QR detection system 148 and computing machine 150 by communication bus 154.In this exemplary embodiment, QR detection system 148 comprises radio frequency (RF) subsystem, and described radio frequency (RF) subsystem comprises RF source 156, pulse programmer and RF gate (gate) 158 and RF power amplifier 160.RF source 156, pulse programmer and RF gate 158 and RF power amplifier 160 generate a plurality of RF pulses under the predefine frequency, described RF pulse is applied to coil, such as inductosyn 162.Communication network 164 will be sent to inductosyn 162 from the RF pulse of RF source 156, pulse programmer and RF gate 158 and RF power amplifier 160.Communication network 164 also is sent to RF detecting device 166 to described RF pulse from inductosyn 162.

Fig. 8 is the synoptic diagram of inductosyn 162.In this exemplary embodiment, inductosyn 162 is placed on shown in platform 144(Fig. 1) a depressed area (not shown) in.In addition, in this exemplary embodiment, inductosyn 162 comprises two antisymmetry current branch of the opposite side of the mid-plane 172 that is positioned at abdomen scanning device system 100, i.e. the first current branch 168 and the second current branch 170.The two is shown in Figure 5 being arranged essentially parallel to the first and second walls 126 and 132(for each current branch 168 and 170) the path in conduction current.During operation, electric current is at first direction 174 first current branch 168 of flowing through, and at the second direction 176 opposite with first direction 174 second current branch 170 of flowing through.In this exemplary embodiment, inductosyn 162 operates under normal human subject body temperature or near it, and namely approximate 37.0 ℃, just as previously described.But in certain embodiments, inductosyn 162 operates in certain normal human subject body temperature, such as adding deduct approximate six degrees centigrade.Correspondingly, in this exemplary embodiment, inductosyn 162 operates under the operating frequency that is associated with normal human subject body temperature.

As shown in Figure 7, inductosyn 162 is coupled to the RF subsystem, and it provides electric excitation signal to current branch 168 and 170.In certain embodiments, described RF subsystem uses variable frequency RF source usually providing the RF excitation signal under the frequency corresponding to predefine feature nuclear quadrupole resonance (NQR) frequency of target substance.During screening was processed, when the passenger was sitting on the platform 144, the RF excitation signal that is generated by the RF subsystem was introduced in the passenger, comprising passenger's lower abdomen and pelvic area and/or upper leg.In this exemplary embodiment, inductosyn 162 serves as the pick-up winding for the NQR signal that is generated by the passenger, thereby the NQR output signal is provided, can utilizes shown in computing machine 150(Fig. 7) described NQR output signal is sampled in order to determine the existence of target substance (such as explosive) or other target substances.

In this exemplary embodiment, inductosyn 162 utilizes electromagnetic interference (EMI)/Radio frequency interference (RFI) (EMI/RFI) shielding to promote sensor 162 is shielded from external noise and interference, and/or promote to suppress RFI and overflow from QR detection system 148 during screening is processed.For instance, in this exemplary embodiment, wall 126,132,138 and 140(each is shown in Figure 5) implement the RF shielding for inductosyn 162.In one embodiment, wall 126,132,138 and 140 is electrically coupled to one another shown in the 142(Fig. 5 of floor) and be electrically coupled to platform 144, thus form the RF shielding.In such embodiments, each in the middle of wall 126,132,138 and 140, floor 142 and the platform 144 is all made by suitable conductive material, such as aluminium or copper.In addition, wall 126,132,138 and 140, floor 142 and platform 144 can be created integral to or can be coupled, such as welding together.

As shown in Figure 8, the first current branch 168 comprises top conducting element 178 and the below conducting element 180 that separates by the non-conductive area.Similarly, the second current branch 170 comprises top conducting element 182 and the below conducting element 184 that separates by the non-conductive area.The first and second current branch 168 and 170 common restriction inductosyns 162, and can be formed by any suitable conductive material, such as (but being not limited to) copper and/or aluminium.Resonant capacitor 186 and tuning capacitor 188 electric coupling of above and below conducting element 178 and 180 by fixed numbers, described tuning capacitor 188 are the switched capacitor that is used to change the tuning capacitance of inductosyn 162 in one embodiment.Above and below conducting element 182 and 184 situation are similar.

In this exemplary embodiment, electric current flow through in the counterclockwise direction the first current branch 168 and the second current branch 170 are shown in arrow 190.Correspondingly, during operation, electric current is at first direction first current branch 168 of flowing through, and at the second direction opposite with first direction second current branch 170 of flowing through.It is because the different settings of the positive and negative conducting element in each current branch 168 and 170 that electric current flows in such a manner.For instance, top conducting element 178 is positive conducting elements, and below conducting element 180 is negative conducting elements.On the contrary, top conducting element 182 is negative conducting elements, and below conducting element 184 is positive conducting elements.

During operation, electric current flows between the first and second current branch 168 and 170, and this is because each current branch passes through the electric coupling of sensor outer cover.In addition, in scan period, the passenger is sitting in the abdomen scanning device system 100, thereby so that passenger's a side be positioned on the first current branch 168, and so that the second side of passenger be positioned on the second current branch 170, thereby the passenger is halved by mid-plane 172.In such circumstances, electric current passes through the opposite direction of current branch 168 and 170, thereby so that electric current flow to the passenger front side along the first current branch 168 from passenger's rear side, and flow to passenger's rear side along the second current branch 170 from the passenger front side.

The embodiments described herein permission centralized detecting is hidden in the interior violated thing in zone that utilizes other screening methods to be difficult to check, comprising passenger's belly, pelvis and/or inguinal region, such as between passenger's two legs or bodily cavity inside.In addition, the embodiments described herein with the non-ionising radiation of safety with the specific chemical constitution of the thing of violating a ban as target.In addition, previously described embodiment can be combined with other passenger's screening systems.Consequently improved for the detection of thing of violating a ban, and reduced for needed time of each passenger of screening and zone.

Fig. 9-11 is respectively skeleton view, side view and the end-view of lower limb scanner system 200.It is walk-through shoe scanning device that system 200 is shown as specific implementation, and comprises left wall 202 and right wall 204.Inductosyn 206 is between access ramp 208 and exit ramp 210.Left wall is subject to framework 212 and supports, and right wall is subject to framework 214 supports.In an embodiment, inductosyn 206 can be placed in the depressed area in the aisle between entrance and the exit ramp.This depressed area also will be known as the sensor outer cover.Omitted inductosyn 206 in order to sensor outer cover 216 is shown in Figure 11, it is recessed in the aisle of scanner system 200.In this exemplary embodiment, inductosyn 206 is operated near normal human subject body temperature or its, namely approximate 37.0 ℃.But in certain embodiments, inductosyn 206 is operated in certain normal human subject body temperature, such as adding deduct approximate six degrees centigrade.Correspondingly, in this exemplary embodiment, inductosyn 206 is operated under the operating frequency that is associated with normal human subject body temperature.In addition, in certain operational frequency range that inductosyn 206 is operated in the certain temperature range that comprises normal human subject body temperature is associated.As shown in Fig. 9-11, can utilize two antisymmetry current branch 218 and 220 to implement inductosyn 206.These current branch can be positioned at the opposite side of the mid-plane of check system.As shown in Figure 9, current branch 218 is positioned at a side of mid-plane 220,220 opposite sides that are positioned at mid-plane of current branch.

Inductosyn 206 can with whole two current branch experience usually or this mode that is arranged essentially parallel to the current flowing of left and right wall be configured.For instance, described current branch can be placed with power supply (this is not shown) and be communicated with.During operation, the electric current current branch 218 of flowing through in one direction, and electric current is at the basically opposite direction current branch 220 of flowing through.Term " antisymmetry current flowing " can be used to refer to electric current wherein in the flow through situation of each current branch of basically opposite direction.

Inductosyn 206 can utilize quadrupole resonance (QR) sensor, nuclear magnetic resonance (NMR) sensor, metal detection sensor etc. to implement.For the purpose of convenience, describe each embodiment with reference to the inductosyn that is implemented as the QR sensor, but such description is equally applicable to the inductosyn of other types.Still with reference to Fig. 9-11, current branch 218 and 220 common restriction QR thin slice coils or QR manage array coils.For the purpose of convenience, about the further discussion of QR sensor will be main with reference to " QR thin slice coil " or simply " QR coil ", but such description is equally applicable to QR pipe array coil.During typical inspection was processed, personnel entered system at entrance 222 places, and stand in subsequently in the test zone that is limited by QR sensor 206.In one embodiment, described personnel can place its left foot when standing with respect to current branch 218, and its right crus of diaphragm is placed with respect to current branch 220.The QR sensor utilizes subsequently nuclear quadrupole resonance (NQR) to implement and checks processing, in order to detect the existence of the target substance that is associated with described personnel.In general, QR sensor 206 comprises RF subsystem or with it communication, and described RF subsystem provides electric excitation signal to current branch 218 and 220.Utilize known technology, described RF subsystem can utilize variable frequency RF source usually providing the RF excitation signal under the frequency corresponding to the predefine feature NQR frequency of target substance.During checking processing, can be incorporated into sample to the RF excitation signal that is generated by the RF source, described sample can comprise footwear, socks and the clothing on the lower limb that are present in personnel in standing or that otherwise locate with respect to the QR sensor in certain embodiments.In certain embodiments, described QR coil can serve as the pick-up winding for the NQR signal that is generated by described sample, thereby the NQR output signal is provided, can samples in order to determine the existence of the target substance such as explosive to described NQR output signal.

The same with the inductosyn of other types, QR sensor 206 needs electronic interferences/Radio frequency interference (RFI) (EMI/RFI) to a certain degree to shield for external noise usually.In addition, the QR sensor may also need to suppress the shielding that RFI overflows from check system during checking processing.Best RFI shields the electrical connection of the RF coil that normally encapsulates the QR sensor fully and the chamber of ground connection.This set prevents that external noise from directly arriving the RF coil.Another kind of common shield technology is the RF coil to be placed on have in the sealing cover that extends in the waveguide tunnel.But these solutions are always unpractical for checking human, and this for example is because some people feels vigilant or uncomfortable for walking about and standing in enclosure space.

Fig. 9-12 shows passive, an open example near the RF shielding part that can use in combination with the QR sensor.Be used for system 200 shielding part can by with left side and right wall 202 and 204, entrance and exit ramp 208 and 210 and 216 electrical connections of sensor outer cover realize.Each shield assembly can be formed by suitable conductive material, such as aluminium and/or copper.Usually each floor panel assembly ( ramp 208 and 210 and sensor outer cover 216) is welded together in order to form single structure.Also can be welded to floor panel assembly to left and right wall, perhaps utilize the suitable securing member such as bolt, rivet, screw and/or latch to fix.For example can use foregoing any suitable securing member and/or tightening technology that QR sensor 206 is fixed in the sensor outer cover 216.Left and right wall, entrance and exit ramp and sensor outer cover together limit basically V-shaped shielding construction, and it provides can be by the aisle of personnel's process during checking processing.

In certain embodiments, left and right wall, entrance and exit ramp and QR sensor can be covered by electrically non-conductive material (such as timber, plastics, fabric, glass fibre etc.).System 200 is shown as having optional entrance and exit around 224 and 226.These personnel around the check system of being convenient to pass by advance and go out.In certain embodiments, the overall dimension of system 200 and shape are enough to provide necessary electromagnetic screen for the inductosyn (for example the QR sensor 206) of implementing.Figure 10 shows a left side and right wall 202 and 204 with overall height 228.Distance between the highest part of this top surface that highly is defined as QR sensor 206 and corresponding wall.System 200 has width 230, and it is by the distance definition between wall 202 and 204.Figure 11 shows the system 200 with mid-plane 232, described mid-plane 232 approximate each walls that are parallel to system 200.The embodiment of Fig. 9-12 shows a left side and the right wall that is formed suitable arc, and described arc has the radius of the height that is approximately wall.Should be mentioned that described wall alternatively at the entrance and exit place by brachymemma.Be convenient to personnel by the brachymemma wall and move through system, and further expanded the open concept of system.

Figure 13 A is the rough schematic view of depicting some main electric components of QR sensor 206.Left current branch 218 is shown as having the above and below conducting element 234 and 236 that separates by the non-conductive area.Similarly, right current branch 220 comprises the above and below conducting element 238 and 240 that also separates by the non-conductive area.Left and right current branch together limits the QR coil of the sensor shown in Fig. 9 and 11, and can be formed by any suitable conductive material, such as copper and/or aluminium.Above and below conducting element 234 and 236 is shown as by the resonant capacitor 242 of fixed numbers and tuning capacitor 244 electric coupling, and described tuning capacitor 244 is the switched capacitors that are used to change tuning capacitance.Above and below conducting element 238 and 240 can be disposed similarly.

Figure 13 A also comprises and shows flow through several arrows of direction of left and right current branch of electric current.During operation, the electric current left current branch 218 of flowing through in one direction, and electric current is at the basically opposite direction right current branch 220 of flowing through.Flow through the in the opposite direction reason of two current branch of electric current is that left and right current branch has the different settings of positive and negative conducting element.For instance, conducting element 234 and negative below conducting element 236 directly over left current branch 218 comprises.Relative therewith, right current branch 220 comprise negative top conducting element 238 and under conducting element 240.This set provides an example of the QR sensor of the opposite direction of each current branch of flowing through or antisymmetry electric current.In one embodiment, electric current flows between left and right current branch during operation, this be because these assemblies by ramp 208 and 210 and 216 electric coupling of sensor outer cover.During operation, personnel can be placed on his or her left foot on the left current branch 218, and his or her right crus of diaphragm is placed on the right current branch 220.In such circumstances, electric current by on the contrary guiding through each branch, thereby cause electric current to flow to heel along left current branch 218 from toe, and flow to toe along right current branch 220 from heel.

Figure 13 B is the rough schematic view of describing the optional current balance type line that is communicated with a left side and the right current branch of QR sensor 206.Should be mentioned that Figure 13 B depicts the identical QR sensor of Figure 13 A, but for the sake of clarity omitted fixed numbers resonating capacitor 242 and the tuning capacitor 244 of left and right current branch.In Figure 13 B, current balance type line 246 is shown as top conducting element 238 and 236 electric coupling of below conducting element.Current balance type line 248 is similarly with below conducting element 240 and 234 couplings of top conducting element.Described balanced line helps the QR sensor to keep electric current to flow through the aforementioned antisymmetry of current branch 218 and 220.In addition, these current branch allow left and right current branch 218 and 220 the identical or substantially the same levels of current of positive and negative terminal maintenance.

Figure 14 is the fragmentary cross-sectional view of QR check system 200, wherein shows the QR sensor 206 that is positioned at sensor outer cover 216.Left current branch 218 is shown as being created in counterclockwise upper magnetic field around this current branch.Relative therewith, right current branch 220 is created on the clockwise direction magnetic field around this current branch.The direction in the magnetic field that is generated by each current branch is that the specific direction owing to the electric current of each respective branches of flowing through causes.Because electric current each branch that flows through in the opposite direction, as shown in Figure 13 A and the 13B, so by the magnetic field of each generation in these branches equally in the opposite direction around.QR sensor shown in Figure 14 produces independent backing field around left or right current branch 218 and 220.In the embodiment of Figure 14, described QR sensor utilizes printed circuit board (PCB) (PCB) to implement.Left and right current branch by non-conductive area 250,252 and 254 electrically isolated from one and with conduction wall 202 and 204 electricity isolation.These non-conductive areas allow magnetic field around its corresponding current branch.

The operation of exemplary walk-through QR check system can followingly be carried out.At first, can guide personnel to enter QR check system 200 at entrance 222 places.Described personnel go on access ramp 208, and when standing his or her both feet are placed on the QR sensor 206.Check the precision of processing in order to maximize, described personnel are placed on his or her left foot on the left current branch 218 when standing, and his or her right crus of diaphragm is placed on the right current branch 220.At this moment, 206 couples of described personnel's of QR sensor lower limb carry out QR scanning, in order to determine the existence of target substance.This can be by usually providing the RF excitation signal to realize under the frequency corresponding to the predefine feature NQR frequency of target substance by the QR sensor.When serving as pick-up winding, QR sensor 206 can detect any NQR signal from target sample subsequently.These signals can be sent to suitable calculating device processing and to analyze, as the back will be in further detail as described in.In certain embodiments, QR sensor 25 can be designed to detect owing to the lower limb place that is positioned at examinate person or with it change or the skew of the QR tuned frequency that causes of the existence of contiguous conductive articles (such as cutter).

Figure 15 A is the rough schematic view of the main electric component of some of them of depicting a kind of QR sensor 206 of replacement.Similar with other embodiment, the size of QR sensor 206 can be confirmed as can being contained in the sensor outer cover 216 of check system.Therefore, two current branch 218 can be placed on a side (shown in Figure 11) of the mid-plane 232 of check system, and two current branch 220 can be placed on the opposite side of mid-plane.In order to be easy to discuss, the both sides of mid-plane will be called as left side and right side sometimes.Whole two current branch 218 are shown as having above and below conducting element 234 and 236, and whole two current branch 220 have above and below conducting element 238 and 240.Figure 15 A also comprises and shows flow through several arrows of direction of each current branch of QR sensor of electric current.During operation, electric current two current branch 218 in left side of flowing through in one direction, and electric current is at basically opposite direction two current branch 220 in right side of flowing through.As previously mentioned, electric current each current branch of flowing through in the opposite direction is because two in left side and two current branch in right side have the different settings of positive and negative conducting element.

Figure 15 B is the rough schematic view of depicting the optional current balance type line that is communicated with each current branch of QR sensor 206.Should be mentioned that Figure 15 B depicts the identical QR sensor of Figure 15 A, but for the sake of clarity omitted fixed numbers resonating capacitor 242 and the tuning capacitor 244 of each current branch.In Figure 15 B, current balance type line 246 is shown as below conducting element 240 electric coupling with top conducting element 234 with the outside current branch 220 of outside current branch 218.Current balance type line 248 is coupled the below conducting element 236 of outside current branch 218 and the top conducting element 238 of outside current branch 220 similarly.Described balanced line helps the QR sensor to keep the antisymmetry of electric current between two current branch 220 of two current branch 218 in right side and right side to flow.In addition, these current branch allow continuous conducting element to keep identical or substantially the same levels of current.

Figure 16 is the fragmentary cross-sectional view of QR check system 200, wherein shows the QR sensor 206 that is positioned at sensor outer cover 216.Two current branch 218 in left side are shown as together being created in counterclockwise upper magnetic field around these two current branch.Relative therewith, two current branch 218 in right side together are created on the clockwise direction magnetic field around these two current branch.220 cooperations of two current branch in right side generate the single magnetic field around whole these two current branch.Correspondingly, a plurality of adjacent current branch that has a plurality of adjacent current branches of a current flowing on the direction and have a current flowing on the basically opposite direction of the QR sensor utilization shown in Figure 16 produces reciprocal magnetic field.For instance, Figure 16 shows and utilizes two adjacent current-carrying branches to produce the QR sensor 206 in magnetic field in one of them of direction shown in two.If desired, described QR sensor can alternatively be implemented three or more adjacent current-carrying branch, in order to produce the magnetic field on the specific direction.

In the embodiment of Figure 16, each current branch is by non-conductive area 250,252,254 and 256 electricity isolation.Operation according to the walk-through QR check system of the embodiment of Figure 16 can followingly be carried out.At first, can guide personnel to enter QR check system 200 at entrance 222 places.Described personnel go on access ramp 210, and stand in the test zone that is limited by QR sensor 206.In certain embodiments, described personnel are placed on his or her left foot on two current branch 218 in left side when standing, and his or her right crus of diaphragm is placed on two current branch 220 in right side.At this moment, can carry out by 206 couples of described personnel's of QR sensor lower limb QR scanning, in order to utilize previously described any technology to determine the existence of target substance.

Figure 17 A is the rough schematic view of the main electric component of some of them of depicting a kind of QR sensor 206 of replacement.QR sensor 206 is similar to the QR sensor 206 of Figure 15 A in many aspects.Main difference relates to the setting of four current branch of sensor.The QR sensor 206 of Figure 15 A has two adjacent current branches 218 that are positioned at the sensor left side, and two adjacent current branches 220 that are positioned at the sensor right side.Relative therewith, the QR sensor 206 of Figure 17 A utilizes the adjacent current branch with the current flowing on the alternating direction.For instance, see from left to right that QR sensor 206 comprises following current branch series, such as two the first current branch 218 and two the second current branch 220.Electric current each first current branch 218 of flowing through in one direction, and at another direction each second current branch 220 of flowing through.Figure 17 B is the rough schematic view of depicting the optional current balance type line that is communicated with each current branch of QR sensor 206.Figure 17 B depicts the identical QR sensor of Figure 17 A, but has for the sake of clarity omitted fixed numbers resonating capacitor 242 and the tuning capacitor 244 of each current branch.Similar with other embodiment, balanced line 250,252, its corresponding conducting element of 254 and 256 electric coupling.

Figure 18 is the fragmentary cross-sectional view of QR check system 200, wherein shows the QR sensor 206 that is positioned at sensor outer cover 216.In the left side of QR check system, current branch 218 be created in counterclockwise upper around magnetic field, and adjacent current branch 220 be created on the clockwise direction around magnetic field.Two current branch on QR check system right side can be configured to produce magnetic field similarly.If desired, the embodiment of Figure 18 may be modified as and comprises additional current-carrying branch pair.The embodiment of Figure 18 is an example of QR sensor that has a plurality of current branch of a current flowing on the direction and have a plurality of current branch of the current flowing on the basically opposite direction.The operation of QR sensor 206 can be carried out according to being similar to the mode of describing in other embodiments.The susceptibility to a certain degree that provides for conductive articles is provided in the alternative current branch that should be mentioned that QR sensor 206, thereby the orientation that allows possibly can't realize at the QR of other embodiment sensor detects such article.Therefore, the QR sensor setting of Figure 18 can be used to strengthen or substitute the QR sensor of other types disclosed herein.

As previously mentioned, described QR sensor can be configured to detect metal in a plurality of different orientations.In order to strengthen the metal detection ability of check system 200, described check system can be alternatively or is additionally comprised independent metal detection sensor.Figure 19 illustrates an example of such system.In Figure 19, check system 200 is shown as having the metal detection sensor 258 that is associated with QR sensor 206.Each metal detection sensor can be configured to detect lower limb vicinity or near the conductive articles it that is present in examinate person.Can use any multiple known metal detection sensor.

Figure 20 is the skeleton view of QR check system 200, and it comprises QR sensor 206(, and this is not shown).System 200 is similar to the QR check system 200 shown in Fig. 9 in many aspects.Some difference is that system 200 has been adapted to the door detection system and operates in combination.Specifically, system 200 comprises four nozzle interfaces 260 in the wall that is respectively formed at the QR check system.Each interface comprises four nozzle bores 262, and its size is confirmed as holding linear discharge mouth array (this is not shown).In general, nozzle interface is soldered, bolt connects or otherwise adhere to or be formed in its corresponding wall, and can utilize the conductive material identical with wall to construct.

Figure 21 and 22 is respectively skeleton view and the end-view of multisensor check system 300.Figure 23 is the sectional view of the described multisensor check system that obtains of the line 15-15 along Figure 22.Described multisensor check system comprises the walk-through QR check system 300 that disposes explicitly with door detection system 302.Door detection system 302 comprises door 304, plastics ceiling or overhead guard 310 with sidewall 306 and 308 and between the sidewall and the passage 312 that extends below the ceiling.Described ceiling can comprise the import with fan, with the air-flow that basically mates for generation of the air mass flow that is provided with the hot plume of the mankind.During operation, interested particle will be entrained in the human hot plume that is present in the border air layer adjacent with examinate person, and the checkout equipment will the ceiling from described personnel to door upwards flows.Described ceiling also comprises trace detection system 314, and it is can detect interested nano sized particles such as the system of the trace of arcotic, explosive and other violated things.System 314 can for example utilize ion trap mobility spectrometer to implement.If desired, door detection system 302 can also comprise a plurality of air jets 316.Described injection orifice is configured to limit four linear discharge mouth array 318(Figure 23), each injection orifice perpendicular alignmnet in each array wherein.Described injection orifice can be arranged to extend to the approximate higher position that is in the chest level from the approximate lower position that is in the knee level in door 304.Each injection orifice can be configured to one very short air inwardly be sprayed and upwards be incorporated in the passage 312 of door.Described injection orifice is used for the clothing of the human subjects in the passage is caused enough interference, thereby evicts the particle interested in the clothing that may be trapped within examinate person from.But the very short air of this thigh sprays and is controlled so as to minimal disturbances and the minimum dilution that realizes for the hot plume of the mankind.The particle of evicting from is entrained in the human hot plume of contiguous human subjects existence subsequently.Air (comprising the particle interested of evicting from from clothing) in the human hot plume is directed to trace detection system 314 to analyze.

Figure 24-26 is respectively skeleton view, side view and the end-view of check system 400.Similar with other embodiment, check system 400 comprises wall 402 and 404, and the inductosyn 406 that is positioned at the aisle that is limited by described wall.As previously mentioned, described inductosyn is shown as being embodied as the QR sensor, but also can alternatively use the inductosyn of other types.Arrange differently from the inclined ramp of the check system of Fig. 9-11, system 400 comprises the floor 408 that limits the basically smooth aisle between the wall 402 and 404.In this embodiment, QR sensor 406 comprises from the outstanding current branch 410 and 412 in the floor of check system.Outstanding current branch does not need the sensor outer cover that caves in.On the whole, the current branch of QR sensor 406 is according to operating with similar mode described above.But QR sensor 406 provides additional function, and the back will be further described in more detail this.The electromagnetic shield that is used for check system can realize by floor 408 is electrically connected with left and right wall 402 and 404.In the middle of these assemblies of described shielding part each can be formed by suitable conductive material, such as aluminium and/or copper.Left and right wall can also be soldered to floor panel assembly, perhaps utilizes any technology described above to fix.If desired, left and right wall, floor and QR sensor 406 can be coated with electrically non-conductive material, such as timber, plastics, fabric, glass fibre etc.

Figure 27 is the top view of the part of check system 500, wherein shows the relative positioning of left and right current branch 65 and 70.Similar with other embodiment, current branch 65 and 70 has the antisymmetry current flowing.

Figure 28 is the side view with the QR sensor 406 of floor 108 electric connections.Only have in the figure right current branch 412 as seen, but left current branch 410 can be determined specification and location similarly.Right current branch is shown as having the shape of the basically arc that forms gap 414.Described gap is by the area definition between the top on the bottom of current branch and floor 408.Current branch has length 416 and height 418.Do not need specific length or height, but in general, the length of current branch makes it slightly be longer than article or the sample that checks.

Figure 29 is the fragmentary cross-sectional view of QR check system 400, wherein shows the QR sensor 406 with floor 408 electric connections.Left and right current branch 410 and 412 is shown as producing respectively the backing field around its corresponding current branch.In other embodiments, in the floor of check system, form depression, so as to form allow magnetic field around the gap.Such depression for system 400 not necessarily.On the contrary, left and right current branch can be constructed such that it, and each forms gap 414, the non-conductive area between its current limit branch and the floor 408.This non-conductive area or gap allow magnetic field around its corresponding current branch.Another benefit that system 400 provides is, can realize the correspondingly more inspection of high position for examinate person's lower limb.This is because left and right current branch is outstanding from the floor of check system, thereby allows the magnetic field that generates to retrain examinate person in the position away from the floor in inspection post more.

Figure 30 is the block scheme of system 500, each assembly that it can be implemented to control, manage, operate and monitoring is associated with multisensor syste 300.Should be mentioned that with reference to the metal detector 502 that is optional components, trace detection system 314 and air jet 316 and come descriptive system 500.Describe Figure 30 with reference to check system 400 in addition, but such description is equally applicable to other check systems as described herein and various inductosyn.System 500 is shown as having graphical user interface 504, processor 506 and storer 508.Can utilize to provide and check with each and any suitable calculating device of necessity control, monitoring and the data analysis of each system that detector system is associated and assembly (comprising power supply 502) is implemented described processor.

In general, processor 506 can be special use or multi-purpose computer, such as the personal computer with the operating system such as DOS, Windows, OS/2 or Linux: macintosh computer; Has JAVA OS as the computing machine of operating system; Such as the graphics workstation of computing machine of Sun Microsystems (Sun Microsystems) and U.S. Silicon Valley Graphlogic Inc. (Silicon Graphics) and so on, and have other computing machines such as the UNIX operating system of the AIX of Sun Microsystems or a certain version the SOLARIS; Perhaps any other known and available operating system perhaps include, but is not limited on knee and any device handheld computer.Graphical user interface 504 can be can with any suitable display device of any calculating device operation as described herein, and can comprise display, such as LCD, LED, CRT, plasma monitor etc.

Communication linkage between system 500 and each inspection and the detector system can utilize supports transmission to implement for the data of the operation control of each assembly (for example inductosyn 206, metal detector 502, trace detection system 314, air jet 316) of multisensor check system and any proper technology of necessary signaling.Described communication linkage can utilize traditional communication technology to implement, such as UTP, Ethernet, coaxial cable, serial or parallel cable and optical fiber are arranged especially.But it is possible using wireless communication technology, and it is because it possibly can't provide many application desired necessary level of security, such as airdrome luggage screening system that described wireless communication technology is not utilized usually.In some implementations, system 500 is configured to physically be close to check system physically, but system 500 also can remotely be implemented if desired.Long-range implementation can be configured to realize that described suitable secure network link for example comprises special-purpose connection, Local Area Network, wide area network (WAN), Metropolitan Area Network (MAN) (MAN) or the Internet by utilizing suitable secure network link to system 500 and check system.

For example can utilize computer software, hardware or its certain combination that the whole bag of tricks as described herein and processing are implemented in the computer-readable medium.For hardware implementation mode, each embodiment as described herein can be implemented by processor 506, and described processor 506 may be implemented within one or more special ICs (ASIC), digital signal processor (DSP), digital signal processor (DSPD), programmable logic device (PLD) (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, is designed to implement in the middle of other electronic units or the combination of its selectivity of various functions as described herein.For software realization mode, can utilize independent software module (such as rules, function etc.) to implement embodiment as described herein, wherein each software module is implemented one or more functions and operation as described herein.Can utilize software application to implement software code, described software application can write and can be stored in the memory cell (for example storer 508) with any suitable programming language, and is carried out by processor (for example processor 506).Described memory cell may be implemented within the processor or the processor outside, and it can utilize the known communication technology to be coupled to processor according to the mode that can communicate by letter under latter event.Memory cell shown in Figure 30 can utilize the suitable volatibility of any type (or combination) and nonvolatile memory or memory device to implement, comprising random-access memory (ram), static RAM (SRAM), Electrically Erasable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory EPROM (EPROM), programmable read-only memory (prom), ROM (read-only memory) (ROM), magnetic storage, flash memory, disk or CD or other similar or effective storer or data storage device.

Figure 31 is the skeleton view of QR check system 600, and it comprises inductosyn, such as quadrupole resonance (QR) sensor 602.In alternative embodiment, described inductosyn can be any suitable inductosyn, such as nuclear magnetic resonance (NMR) sensor or metal detection sensor.QR check system 600 is adapted to the door detection system and operates in combination.In a specific embodiment, QR check system 600 comprises the one or more nozzle interface (not shown) in the wall that is formed on separately QR check system 600.Each interface comprises one or more nozzle bores, and its size is determined to be holds linear discharge mouth array (not shown).In general, described nozzle interface is soldered, bolt connects or otherwise adhere to or be formed in its corresponding wall, and can utilize the conductive material identical with wall to construct.

Figure 32 and 33 is respectively top view and the end-view of QR check system 600.Figure 34 is the sectional view of the QR check system 600 that obtains of the line 26-26 along Figure 33.QR check system 600 comprises the walk-through QR check system that disposes explicitly with door detection system 604.Door detection system 604 comprises the door 606 with the first side wall 608 and relative second sidewall 610.The ceiling of being made by the suitable material such as plastic material or overhead guard 612 are coupled to the first side wall 608 and the second sidewall 610 and are coupling between these two.Passage 614 extends between the first side wall 608 and the second sidewall 610 and below ceiling 612.Ceiling 612 can comprise the import with fan, with the air-flow that basically mates for generation of the air mass flow that is provided with the hot plume of the mankind.During operation, interested particle will be entrained in the human hot plume that is present in the border air layer adjacent with examinate person 616, and will be from personnel 616 to door checkout equipment 606 the ceiling 612 upwards flow.In one embodiment, trace detection system 618 is coupled to ceiling 612 or is coupled about ceiling 612, and is configured to detect interested nano sized particles, such as the trace of arcotic, explosive and other violated things.Trace detection system 618 can for example utilize ion trap mobility spectrometer to implement.In certain embodiments, door detection system 604 can also comprise a plurality of air jet (not shown).Described air jet is configured to limit a plurality of linear discharge mouth arrays, wherein the injection orifice perpendicular alignmnet in each injection orifice array.Each air jet can be configured to one very short air inwardly be sprayed and upwards be directed in the passage 614 of door 606.

With further reference to Figure 32, in this exemplary embodiment, QR sensor 602 comprises two antisymmetry current branch, i.e. the first current branch 620 and the second opposite current branch 622.The first current branch 620 and the second current branch 622 are placed in the passage 614, and are positioned at the opposite side of the mid-plane 624 of QR check system 600.As shown in Figure 31, the first current branch 620 is positioned at the first side of mid-plane 624, and 622 of the second current branch are positioned at the second relative side of mid-plane 624.In this embodiment, the first current branch 620 and the second current branch 622 are substantially parallel, and directed with vertical direction about the stayed surface of ground or QR check system 600.During operation, electric current is at first current branch 620 of being flowed through by the first direction of arrow 626 representatives among Figure 31, and electric current is at second current branch 622 of being flowed through by the basically opposite second direction of arrow 628 representative, and this is known as " antisymmetry current flowing " in this article.In general, QR sensor 602 comprises to current branch 620 and 622 provides the RF subsystem of electric excitation signal or communicates with it.Utilize suitable technology, described RF subsystem can utilize variable frequency RF source usually providing the RF excitation signal under the frequency corresponding to the predefine feature NQR frequency of target substance.During checking processing, can be incorporated into personnel 616 to the RF excitation signal that is generated by the RF source.In certain embodiments, QR sensor 602 can serve as the pick-up winding for the NQR signal that is generated by personnel 616, thereby the NQR output signal is provided, can samples in order to determine the existence of the target substance such as explosive to described NQR output signal.

With further reference to Figure 34, in this exemplary embodiment, QR check system 600 comprises safety device 630 in order to prevent from or limit by personnel 616 forming the galvanic circle, and described galvanic circle may be at contact point or zone generation heat undesirably.For instance, thereby touch his or her eyes and form from the galvanic circle of shoulder by the contact point of arm to described personnel's eyes if be positioned at the personnel of traditional QR check system, then may generate too much heat at the contact point place, this may cause described personnel's eyes injured.In order to prevent or limit undesirably heating, safety device 630 comprises in the middle of the following one or more: the foot pad 632 and the handle 634 that are positioned at magnetic field 636.Foot pad 632 and handle 634 are made by suitable electrically non-conductive material.When personnel 616 correctly were positioned at passage 614, each pin all was placed on the corresponding foot pad 632, and each only holds corresponding handle 634.

In addition, in certain embodiments, scanner system 200 is merged into the part of passenger's screening system 700.Figure 35 is the decomposition diagram of an embodiment of shoe scanning device system 200 that is merged into the part of passenger's screening system 700.Passenger's screening system 700 can also comprise in the middle of MMW whole body imaging system 702, additional inductive sensor system 704, trace detection system 706, detector bar detector system (not shown) or other passenger's screening devices one or more.During typical inspection was processed, passenger 708 entered at entrance 222 places, and stand in the test zone subsequently.Described test zone is between rear wall and the place ahead wall.In certain embodiments, rear wall and/or the place ahead wall extend between floor and ceiling, thereby permission rear wall, the place ahead wall, access ramp 208, exit ramp 210, floor 408, ceiling 310 and sensor outer cover 216(are invisible in Figure 35) thus electrical connection provides more comprehensively RF shielding.In certain embodiments, rear wall and/or the place ahead wall can be made of trnaslucent materials at least in part, in order to reduce passenger 708 for the perception of sealing.In certain embodiments, rear wall and/or the place ahead wall comprise the aluminium honeycomb structure.

The rocking arm 710 that MMW whole body imaging system 702 is included between rear wall and the passenger 708 and moves in the space between the place ahead wall and the passenger 708.MMW whole body imaging system 702 is configured to provide the picture of the article under the clothing that may be hidden in passenger 708.One or more inductosyns 206 are placed in the test zone on contiguous floor 408.In certain embodiments, therefore one or more inductosyns 206 are placed to so that the sensitivity of the target unauthorized substances that scanner system 200 is associated for the footwear with passenger 708 is improved, simultaneously so that the interference of MMW whole body imaging system 702 and one or more inductosyns 206 be restricted.In addition, in certain embodiments, one or more inductosyns 206 are placed with and make it basically not produce " shade " or crested zone in the whole body image that is produced by MMW whole body imaging system 702.

In certain embodiments, passenger's screening system 700 comprises independent inductive sensor system 704.Inductive sensor system 704 for example can be (and being not limited to) metal detection system.Alternatively or additionally, inductive sensor system can be the NQR sensing system for passenger 708 other positions except footwear or other sufficient tools, for example (and being not limited to) passenger's 708 belly position.The RF shielding that is provided by rear wall and the place ahead wall advantageously also provides shielding for inductive sensor system 704.In a further embodiment, passenger's screening system 700 comprises independent trace detection system 706.In certain embodiments, and as shown in Figure 35, trace detection system 706 is positioned at ceiling 310.In other embodiments, trace detection system 706 is in the another location in passenger's inspection area.Rear wall and the place ahead wall can advantageously produce the barrier that advances and go out passenger's inspection area for air-flow, so that detect the trace particle that is associated with passenger 708.

Although passenger's screening system 700 is shown as comprising MMW whole body imaging system 702 in Figure 35, it can alternatively comprise XRB whole body imaging system 712, as shown in Figure 36.Figure 36 is the skeleton view of scanner system 200 that is merged into the part of passenger's screening system 700, comprising XRB whole body imaging system 712.For simplicity, inductive sensor system 704 and trace detection system 706 are not shown in Figure 36, but can comprise as previously mentioned in certain embodiments one of them or all the two.In certain embodiments, and as shown in Figure 36, the test zone is between rear wall and the place ahead wall.XRB whole body imaging system 712 comprises assembly 714 and 716. Assembly 714 and 716 one of them or whole two are configured to generate the X-ray scanning beam that guiding is arranged in passenger's (not shown) of test zone, and be included in one of them of assembly 714 and 716 or all the one or more detecting device (not shown) place in the two collect resulting deflection X ray style.

As shown in Figure 36, in certain embodiments, rear wall and/or the place ahead wall extend between floor (not shown) and ceiling (not shown), thereby allow among rear wall, the place ahead wall, access ramp 208, exit ramp 210 and floor and ceiling and sensor outer cover 216(Figure 36 invisible) be electrically connected, in order to more comprehensively RF shielding is provided.In addition, in certain embodiments, thereby the rear wall is slim can being placed between test zone and the XRB whole body imaging system component 712 enough, thereby and/or enough slim can being placed between test zone and the XRB whole body imaging system component 716 of the place ahead wall, and can not reduce the quality of the image that is produced by XRB whole body imaging system 712.For instance, in certain embodiments, rear wall and/or the place ahead wall are equivalent to the sheet of aluminium foil.In addition, in certain embodiments, one or more inductosyns 206 are placed by contiguous floor (unnumbered) in the test zone, thereby improved scanner system 200 for not shown with passenger 708() the sensitivity of the target unauthorized substances that are associated of footwear, limited simultaneously the interference of XRB whole body imaging system 712 with one or more inductosyns 206.In addition, in certain embodiments, one or more inductosyns 206 are placed with and make it produce hardly " shade " or crested zone in the whole body image that is produced by XRB whole body imaging system 712.Therefore, scanner system 200 can integrate with XRB whole body imaging system 712, in order to reduce the areal coverage in passenger's screening zone.In addition, in certain embodiments, scanner system 200 operates simultaneously with XRB whole body imaging system 712.Therefore, scanner system 200 can integrate with XRB whole body imaging system 712, in order to shorten not shown for violated thing screening passenger 708() the required time.In alternative embodiment, scanner system 200 sequentially operates with XRB whole body imaging system 712.

The RFI shielding that other embodiment of the present invention comprise detector bar (such as the QR detector bar) and are used for reducing or eliminating the RFI of detector bar.In one embodiment, the RFI shielding is to hold a concurrent post the room that the passenger disposes structure, waits zone, passenger pulpit, privacy booth and/or detector bar inspection post such as the passenger.Although mentioned " detector bar inspection post " here, described detector bar inspection post can be that any suitable passenger disposes structure.Detector bar described herein can use in combination with the rays safety detection apparatus based on imaging.Safe examination system based on imaging comprises millimeter-wave systems, X ray backscatter system and/or any other suitable safe examination system.When being used to the safety check screening, such rays safety detection apparatus based on imaging provides the image of the article under the clothing that may be hidden in the passenger.When under clothing, identifying such hiding article, implement and analyze in order to determine the character of hiding article.In one embodiment, described analysis comprises and uses sensor (such as chemical sensor) to determine whether hiding article is hidden in passenger's explosive with it.In this exemplary embodiment, be communicated to the detector bar inspection post from imaging system about the positional information of hiding article, so as automatically and/or operator guidance with the sensor localization such as detector bar on hiding article.In addition, embodiment more described herein alleviate RFI by operation detector bar in conductively-closed sealing cover (it also can serve as the detector bar inspection post).More particularly, detector bar described herein inspection post prevents that the passenger from leaving the inspection check point, until solved any unusual and/or alarm.In addition, detector bar and imaging system are used in combination, in order to identify unusual.When using in combination with imaging system, detector bar does not need to implement the formula that sweeps and scans.On the contrary, detector bar is used in the rest point scanning, analyzes take unusual article as target therein.

Figure 37 is the skeleton view that can be used to detector bar inspection post 800 that the passenger is scanned.Figure 38 is the amplifier section view in the detector bar inspection post 800 obtained at 38 places, zone of Figure 37.Figure 39 is the vertical view in detector bar inspection post 800.Figure 40 is the side view in the detector bar inspection post 800 obtained of online 5-5.In certain embodiments, detector bar inspection post 800 comprises entrance 802, the first side wall 804, the second sidewall 806, end wall 808 and exports 810.In addition, in a specific embodiment, detector bar inspection post 800 comprises roof.In this exemplary embodiment, outlet 810 is included in the door 812 that limits in the first side wall 804, the second sidewall 806 and/or the end wall 808.For instance, detector bar inspection post 800 is included in first 812 and second 812 of limiting of restriction in the first side wall 804 in the second sidewall 806.Entrance 802 can be open, perhaps can comprise entrance door so that the inner space 814 in complete closed detector bar inspection post 800.In this exemplary embodiment, the first side wall 804 and the second sidewall 806 are configured to limit narrower aisle 816 and wider inspection area 818; But the first side wall 804 and/or the second sidewall 806 also can have any suitable configuration.

In this exemplary embodiment, the first side wall 804, the second sidewall 806, end wall 808 and door 812 are to be formed by the material of the detector bar 820 in the detector bar inspection post being protected avoid the RFI impact.For instance, the first side wall 804, the second sidewall 806, end wall 808 and door 812 can be by aluminium, the honeycomb LEXAN of aluminium, honeycomb structure ^TM, the stacked cylinder of copper mesh, shielding material, thin slice and/or any other adequate shielding material of shielding material form.Figure 38 illustrates the shielding material of honeycomb structure.In a particular embodiment, described shielding material is transparent at least in part, but shielding material also can be opaque in order to privacy is provided.When detector bar inspection post 800 comprised roof and/or entrance door, described roof and/or entrance door were also formed by shielding material.Like this, detector bar inspection post 800 just provides the passive shielding of detector bar 820 for RFI.

Detector bar 820 is coupled to the first side wall 804, the second sidewall 806 and/or end wall 808.In this exemplary embodiment, detector bar 820 is coupled to end wall 808 and can moves about end wall 808.For instance, detector bar 820 is configured to vertical about end wall 808 and/or moves horizontally.Detector bar 820 can utilize with the similar placement devices of the placement devices shown in Figure 43, with the similar frame of frame shown in Figure 44 and/or allow any other suitable device coupled that detector bar 820 operates as described herein like that to end wall 808.In this exemplary embodiment, detector bar 820 can optionally manually and/or automatically be located.In this exemplary embodiment, controlled system's (not shown) by the passenger's of imaging system (not shown) collection image and used automatic coordinate detection rod 820, in order to analyze from determine unusual of image and/or the article that give the alarm.Additionally or alternatively, the operator at control system place can come with control system the position of telemeter rod 820.In an alternative embodiment, the operator in the detector bar inspection post 800 can be about the artificial coordinate detection rod 820 of passenger.

Detector bar 820 is configured to detect metal, chemical compound and/or trace particle.More particularly, detector bar 820 comprises the first current return 822 and the second current return 824.The first current return 822 has the first electric current 826 that flows at first direction, and the second current return 824 has the second electric current 828 that flows in second direction.In this exemplary embodiment, first direction and second direction are opposite each other.The first current return 822 and the second current return 824 are at detector bar 820 interior restriction quadrupole resonance (QR) coils 830.In addition, in this exemplary embodiment, end wall 808 comprises image cropping, and its shielding that strengthens end wall 808 is in order to reduce the radiation resistance of QR coil 830.When detector bar inspection post 800 was not centered around in the shielding material fully, the plane of QR coil 830 832 was substantially parallel with end wall 808, thereby and can move and be positioned on the zone that will scan the passenger.Alternatively, when detector bar inspection post 800 basically the conductively-closed material fully around the time, for example when detector bar inspection post 800 comprised roof and entrance door, the plane 832 of QR coil 830 can be directed arbitrarily about the first side wall 804, the second sidewall 806 and/or end wall 808.For instance, detector bar 820 can be the hand-held detector bar.In this exemplary embodiment, detector bar 820 is operated near normal human subject body temperature or its, namely approximate 37.0 ℃.But in certain embodiments, detector bar 820 is operated in certain normal human subject body temperature, such as adding deduct approximate six degrees centigrade.Correspondingly, in this exemplary embodiment, detector bar 820 is operated under the operating frequency that is associated with normal human subject body temperature.But in certain operational frequency range that in certain embodiments, detector bar 820 is operated in the certain temperature range that comprises normal human subject body temperature is associated.

Figure 41 is the vertical view that can be used to the detector bar inspection post 900 of a kind of replacement that the passenger is scanned.Figure 42 is the side view in the detector bar inspection post 900 that the line 7-7 of Figure 41 obtains.Figure 43 is the skeleton view of the detector bar 916 that can use with detector bar inspection post 916.Detector bar inspection post 900 comprises entrance 902, the first side wall 904, the second sidewall 906, end wall 908 and exports 910.In addition, in a specific embodiment, detector bar inspection post 900 comprises roof.In this exemplary embodiment, outlet 910 is included in the door 912 that limits in the first side wall 904, the second sidewall 906 and/or the end wall 908.For instance, detector bar inspection post 900 is included in a door 912 that limits in the end wall 908.Entrance 902 can be open, perhaps can comprise entrance door so that the inner space 914 in complete closed detector bar inspection post 900.In this exemplary embodiment, the first side wall 904 and the second sidewall 906 basically parallel to each other and each basically be in the plane; But the first side wall 904 and/or the second sidewall 906 also can have any suitable configuration.

Similar with previously described embodiment, the first side wall 904, the second sidewall 906, end wall 908 and door 912 are to be formed by the material of the detector bars 916 in the detector bar inspection post 900 being protected avoid the RFI impact.For instance, the first side wall 904, the second sidewall 906, end wall 908 and door 912 can be by aluminium, the honeycomb LEXAN of aluminium, honeycomb structure ^TM, the stacked cylinder of copper mesh, shielding material, thin slice and/or any other adequate shielding material of shielding material form.In a particular embodiment, described shielding material is transparent at least in part, but shielding material also can be opaque in order to privacy is provided.When detector bar inspection post 900 comprised roof and/or entrance door, described roof and/or entrance door were also formed by shielding material.Like this, detector bar inspection post 900 just provides the passive shielding of detector bar 916 for RFI.

Detector bar 916 is coupled to the first side wall 904, the second sidewall 906 and/or end wall 908.In this exemplary embodiment, detector bar 916 is coupled to the first side wall 904 and can moves about the first side wall 904.For instance, detector bar 916 is configured to vertical about the first side wall 904 and/or moves horizontally.Detector bar 914 can utilize with the similar placement devices of the placement devices shown in Figure 43, with the similar frame of frame shown in Figure 44 and/or allow any other suitable device coupled that detector bar 916 operates as described herein like that to the first side wall 904.In this exemplary embodiment, detector bar 916 can optionally manually and/or automatically be located.In this exemplary embodiment, the passenger's who is gathered by imaging system image is used automatic coordinate detection rod 916 by the control system, in order to analyze from determine unusual of image and/or the article that give the alarm.Additionally or alternatively, the operator at control system place can come with control system the position of telemeter rod 916.In an alternative embodiment, the operator in the detector bar inspection post 900 can be about the artificial coordinate detection rod 916 of passenger.

Detector bar 916 is configured to detect metal, chemical compound and/or trace particle.More particularly, detector bar 916 is included in the current return 918 that flows on the first direction, thereby at detector bar 916 interior restriction quadrupole resonance (QR) coils 920.When detector bar inspection post 900 was not centered around in the shielding material fully, the plane 922 of QR coil 920 was arranged essentially parallel to the first side wall 904, and can move in order to be positioned on the passenger area that will scan.Alternatively, when detector bar inspection post 900 basically fully the conductively-closed material around the time, for example when detector bar inspection post 900 comprised roof and entrance door, the plane 922 of QR coil 920 can be directed arbitrarily about the first side wall 904, the second sidewall 906 and/or end wall 908.For instance, detector bar 916 can be the hand-held detector bar.

With reference to Figure 43, placement devices is configured to keep the plane 922 of QR coil 920 substantially parallel with the first side wall 904, the second sidewall 906 and/or end wall 908, allows simultaneously the coordinate detection rod 916 optionally about the passenger.In this exemplary embodiment, placement devices 1000 comprises a pair of vertical bar rod 1002 that is coupled to the first side wall 904, the second sidewall 906 and/or end wall 908.Sliding apparatus 1004 is coupled to vertical bar rod 1002 at sleeve (cuff) 1006 places.A pair of horizontal bar rod 1008 is coupled to sleeve 1006, thereby so that horizontal bar rod 1008 between vertical bar rod 1002, extend.Sleeve 1006 comprises and allows about vertical bar rod 1002 automatic or manual location sliding apparatus 1004 and fix any suitable assembly of its position about vertical bar rod 1002.Detector bar 916 is placed in the block (block) 1010 that is coupled to horizontal bar rod 1008.Block 1010 comprises and allows about horizontal bar rod 1008 automatic or manual located blocks 1010 and fix any suitable assembly of its position about horizontal bar rod 1008.Sleeve 1006, block 1010, horizontal bar rod 1008 and/or vertical bar rod 1002 can comprise TEFLON ^TM, so that the friction between each assembly of minimizing placement devices 1000.

Communication linkage 1012 by block 1010 and detector bar 916 communicative couplings and with the control system communicative couplings.Communication linkage 1012 allows to locate sliding apparatus 1004 and/or block 1010 according to the instruction from control system about vertical bar rod 1002 and/or horizontal bar rod 1008.In addition, communication linkage 1012 transmits signal from detector bar 916 to control system, and is in order to solve alarm and/or unusual, as described herein-in such.In this exemplary embodiment, QR coil 920 can less, in order to improve activity coefficient and/or reduce QR coil 920 and the interactional possibility of medical device (such as pacemaker).

Figure 44 is can be with shown in the 800(Figure 37-39 of detector bar inspection post) and/or detector bar inspection post 900(Figure 41 and 42 shown in) skeleton view of the frame 1100 used.In this exemplary embodiment, frame 1100 can be coupling in detector bar inspection post 800 and/or the detector bar inspection post 900, in order to allow optionally coordinate detection rod 820 and/or detector bar 916 about the passenger.In a particular embodiment, frame 400 is contiguous the first side wall 804 and/or 904, the second sidewall 806 and/or 906 and/or the outside surface of end wall 808 and/or the 908 servo-controlled frame of laying.

Figure 45 is can be with shown in the 800(Figure 37-39 of detector bar inspection post) and/or detector bar inspection post 900(Figure 41 and 42 shown in) synoptic diagram of the trace detection system 1200 used.For simplicity, will describe trace detection system 1200 about detector bar inspection post 800, but should be understood that, trace detection system 1200 also can be used with detector bar inspection post 900.Trace detection system 1200 is configured to detect and/or identification is associated with the passenger trace particle and/or steam.More particularly, trace detection system 1200 comprises air system 1202, and it has one or more air intakes 1204 in order to collect trace particle and/or steam from the inner space 814 in detector bar inspection post 800.In this exemplary embodiment, air intake 1204 limits by the surface of detector bar 820, and intake circuit 1206 is communicated with air intake 1204 and detecting device 1208 streams.

By the action of intake motor 1210, caught by air intake 1204 from the air of inner space 814.In this exemplary embodiment, control system is by communicating to control air trapping with intake valve (not shown), and/or directly activate and stop using intake motor 1210 in case control catch by the air of air intake 1204.In addition, identify trace particle and/or steam by detecting device 1208 in the air of sending by intake circuit 1206, described detecting device uses any suitable trace particle and/or steam detection technique.As an example and unrestricted, detecting device 1208 is to analyze the airborne trace particle sent by intake circuit 1206 and/or the ionic mobility spectrometer of steam.Can be by the output of operator's analyzing and testing device 1208 of control system and/or control system, so that whether the article that assessment gives the alarm and/or unusual article are associated with target item such as explosive and/or anesthesia article.

Now description is convenient to identify more embodiment of the existence that is implanted in the medical device in passenger's body, comprising implantable defibrillator, pacemaker, insulin pump, electro photoluminescence device and/or electrotherapy device.Be convenient to reduce the chance that image device and such medical device disadvantageous interaction occur and for example may cause fault utilizing image device to identify such device before the passenger is carried out screening.

Figure 46 is the schematic top view of exemplary inspection check point 1300.Check that check point 1300 comprises entrance 1302 and outlet 1304.Between entrance 1302 and outlet 1304, check that check point 1300 comprises successively except object area 1306, luggage imaging system 1308, passenger's imaging system 1310, management area 1312 and the second screening station 1314.In this exemplary embodiment, check that check point 1300 comprises two except object area 1306, two luggage imaging systems 1308 and two management area 1312.But check that check point 1300 can comprise that the permission of any proper number and/or configuration checks the assembly that check point 1300 operates as described herein like that.The assembly that checks check point 1300 can be coupled to control system 1316 communicatedly in order to collect and/or relay data.

Passenger's imaging system 1310 is configured to detect violated thing and/or whether unusual article are associated with the passenger.In this exemplary embodiment, passenger's imaging system 1310 can be millimeter-wave systems, X ray backscatter system and/or any other suitable safe examination system.In addition, in this exemplary embodiment, passenger's imaging system 1310 comprises the door (not shown), and the passenger is positioned at wherein during imaging.

In this exemplary embodiment, check that check point 1300 also comprises preliminary screening station 1318, it is convenient to for the medical device such as pacemaker the passenger be carried out screening.In this exemplary embodiment, utilize hand-held detector bar as described herein (not shown among Figure 46) at preliminary 1318 places, screening station the passenger to be carried out screening.In an alternative embodiment, preliminary screening station 1318 comprises the door (not shown), and it carries out screening for medical device to the passenger when the passenger moves through passenger scans door 1318 and before the passenger enters passenger's imaging system 1310.For instance, preliminary screening station 1318 can be the scanning door that comprises the abdomen scanning device by specific implementation, and described abdomen scanning utensil is relevant for the one or more inductosyns of passenger location, in order to detect the passenger or the medical device in the body with it.In such embodiments, described inductosyn is movably, thereby adapts to the different passenger of height in order to change height.In addition, described inductosyn can comprise nuclear quadrupole resonance (NQR) sensor, nuclear magnetic resonance (NMR) sensor, induction type metal detection sensor etc.Correspondingly, in one embodiment, described abdomen scanning device comprises shielding part, and it improves signal to noise ratio (S/N ratio) by Radio frequency interference (RFI) and/or the electromagnetic interference (EMI) that reduces from operating environment.Such shielding part can comprise the floor of being coupled to preliminary screening station 1318 and/or the current-carrying plate of ceiling.

Figure 47 shows and is used in shown in the 1318(Figure 46 of preliminary screening station) in exemplary screening device 1400.In this exemplary embodiment, screening device 1400 comprises detecting device 1402, and it has top surface 1404, relative basal surface 1406 and the edge 1408 that centers on detecting device 1402 extensions between top surface 1404 and basal surface 1406.In addition, detecting device 1402 comprises the first end 1410 and the second relative end 1412.Top surface 1404, basal surface 1406 and edge 1408 limit an oar shape hand-held detector bar.Correspondingly, screening device 1400 also comprises the handle 1414 that is coupled to the second end 1412 or integrates with it.In one embodiment, handle 1414 comprises the first end 1416 and the second relative end 1418 that is coupled to detecting device the second end 1412.

In addition, handle 1414 comprises for the entering apparatus 1420 that receives operator's input.For instance, the operator can regulate the frequency of the pulse that is transmitted by detecting device 1402 and/or the intensity of the pulse that transmitted by detecting device 1402.Alternatively, entering apparatus 1420 can be used to activate and/or inactive screening device 1400.For instance, the operator can pass through entering apparatus 1420 inactive screening devices 1400 during without cycle of activity.In addition, detecting device 1402 comprises one or more indicators, and it can be visual detector such as lamp or the audible indicator such as loudspeaker.The first indicator 1422 optionally illuminated when for instance, can be the passenger with it or detect medical device in the body.The second indicator 1424 optionally illuminated when similarly, can be the passenger with it or not detect medical device in the body.

In this exemplary embodiment, screening device 1400 is coupled to computing machine, such as control system 1316.Correspondingly, control system 1316 transfer operation orders and/or receive the screening data from screening device 1400.Control system 1316 and screening device 1400 communicate by cable 1426, and described cable 1426 can also be utilized for screening device 1400 electric power is provided.In an alternative embodiment, screening device 1400 is wireless, and by one or more battery (not shown) power supplies.

Figure 48 is the synoptic diagram of the exemplary electrical framework 1500 of screening device 1400.In this exemplary embodiment, detecting device 1402 comprises transmitting coil 1502 and receiving coil 1504.The region of interest transponder pulse of transmitting coil 1502 in passenger's body.In this exemplary embodiment, transmitting coil 1502 issues at institute's selected frequency of the operating frequency that is significantly higher than known medical device and penetrates pulse.For instance, promote association (AAMI) according to Used In The Regulation of Medical Device In Usa, at least some known medical devices operate in the frequency band that is lower than approximate 1 kilo hertz (kHz) or 2kHz.In addition, AAMI supports scanning and/or screening device to operate in 1,000 times frequency band of the operating frequency that is approximately known medical device.Nerve in the heart and/or musculature are for example more insensitive for the electro photoluminescence under the frequency of increase showing in the IEEE C95.1 standard.In addition, transmitting coil 1502 with the AAMI of front and ieee standard supported than the low energy intensity transponder pulse.

In this exemplary embodiment, detecting device 1402(and more particularly be transmitting coil 1502 and receiving coil 1504) be operated near normal human subject body temperature or its namely approximate 37.0 ℃.But in certain embodiments, detecting device 1402 is operated in certain normal human subject body temperature, such as adding deduct approximate six degrees centigrade.Correspondingly, in this exemplary embodiment, detecting device 1402 is operated under the operating frequency that is associated with normal human subject body temperature.But in certain operational frequency range that in certain embodiments, detecting device 1402 is operated in the certain temperature range that comprises normal human subject body temperature is associated.For instance, in certain embodiments, the operating frequency of detecting device 1402 is by every degree centigrade of 100Hz of offset approximation.In addition, in certain embodiments, the operating frequency of detecting device 1402 is reversed skew about temperature.For instance, the operating frequency of detecting device 1402 raises along with temperature and reduces.In one embodiment, the operating frequency of detecting device 1402 is controlled operator's control at system 1316 places.In addition, in certain embodiments, detecting device 1402 can operate under a plurality of frequencies.For instance, detecting device 1402 can initial manipulation under the safe mode of using lower-wattage in order to detect medical device, and can operate in subsequently under the detecting pattern that uses higher-wattage in order to detect the thing of violating a ban.

In this exemplary embodiment, receiving coil 1504 detects any energy perturbation of the pulse of launching in response to transmitting coil 1502.For instance, receiving coil 1504 detects the opposite magnetic fields (such as reflected impulse) that the pulse of launching in response to transmitting coil 1502 is sent by the medical device in the region of interest.Receiving coil 1504 generates the signal that for example represents the intensity of reflected impulse and/or detect the time period of reflected impulse therebetween, and described signal is sent to control system 1316.

In this exemplary embodiment, control system 1316 is coupled to screening device 1400 by cable 1426.Control system 1316 receives signals by cable 1426 from receiving coil 1504, and described signal is analyzed in order to determine the passenger with it or whether have medical device in the body.Control system 1316 comprises the sample circuit 1506 of processor for example or controller and so on, and it is analyzed described signal.Sample circuit 1506 monitoring detects the length of the time period of reflected impulse, and described length and never the passenger of implantable medical device length expeced time that receives reflected impulse compare.In one embodiment, sample circuit 1506 uses the averaging time in advance selected relevant with transmitting coil 1502 employed upper frequencies and/or lower-wattage.Based on the analysis to described signal, control system 1316 is so that detecting device 1402 for example utilizes the first indicator 1422 and/or the second indicator 1424 Output rusults.

Figure 49 is the mutual synoptic diagram between screening device 1400 and the passenger 1602.As shown in Figure 49, passenger 1602 has implanted medical device.Specifically, passenger 1602 has the pacemaker 1604 that is connected to his heart 1606 by electrical lead 1608.During operation, shown in control system 1316(Figure 46-48) optionally activate transmitting coil 1502.As response, transmitting coil 1502 utilizes institute's selected frequency and selected intensity that pulse is sent in passenger 1602 the region of interest.Each pulse is so that pacemaker 1604 and/or go between and 1608 send reflected impulse.The signal that receiving coil 1504 detection of reflected pulses, and by shown in cable 1426(Figure 47 and 48) will represent reflected impulse is sent to control system 1316.Control system 1316 based on from the elapsed time of the signal of receiving coil 1504 average relatively determine pacemaker 1604 and/or 1608 the existence of going between.For the passenger 1602 who does not have medical device (such as pacemaker 1604), receiving coil 1504 can not detect the reflected impulse that continue to surpass the fixed time section, thereby shows passenger 1602 with it or do not have medical device in the body, such as the medical device of implanting.

Figure 50 shows for implantable medical device shown in passenger 1602(Figure 49) the passenger carry out the process flow diagram 1700 of a kind of illustrative methods of screening, described implantable medical device is such as being shown in pacemaker 1604(Figure 49) and/or electrical lead 1608(Figure 49 of being used for using with pacemaker 1604 shown in).More particularly, the method shown in Figure 50 can the two be all shown in Figure 46 with the inspection check point 1300(with preliminary screening station 1318) use.In addition, the method shown in Figure 50 is by shown in control system 1316(Figure 46-48) to implement, this is by realizing to each assembly transmission order and/or the instruction that check check point 1300.In certain embodiments, utilize each code segment that is configured to implement the method shown in Figure 50 that the processor in the control system 1316 is programmed.Alternatively, the method shown in Figure 50 is coded on the computer-readable medium that can be read by control system 1316.In such embodiments, control system 1316 and/or processor are configured to read computer-readable medium in order to implement the method shown in Figure 50.In this exemplary embodiment, continuously and/or automatically implement the method shown in Figure 50 in the selected time.Alternatively, implementing the method shown in Figure 50 under the operator's who checks check point 1300 the request and/or when control system 1316 determines to implement method shown in Figure 50.

In this exemplary embodiment, passenger 1602 is by shown in entrance 1302(Figure 46) enter 1702 and check check points 1300.Except shown in object area 1306(Figure 46) in, the article that passenger 1602 removes such as metal, and any luggage is placed on shown in baggage screening system 1308(Figure 46) in.Passenger 1602 enters preliminary screening system 1318 subsequently.Utilize shown in screening device 1400(Figure 47 and 48) passenger 1602 is implemented 1704 preliminary screenings, in order to detect the existence of 1706 medical devices, the two is all shown in Figure 49 such as pacemaker 1604 and/or the 1608(that goes between).For instance, control system 1316 optionally activates shown in transmitting coil 1502(Figure 48 and 49).As response, transmitting coil 1502 utilize institute's selected frequency and selected intensity with impulse ejection in passenger 1602 region of interest.In this exemplary embodiment, transmitting coil 1502 operates under the operating frequency that is associated with normal human subject body temperature.If passenger 1602 with it or have pacemaker 1604 in the body and/or go between 1608, then each pulse so that described pacemaker 1604 and/or go between and 1608 send reflected impulse.Shown in receiving coil 1504(Figure 48 and 49) the detection of reflected pulse, and by shown in cable 1426(Figure 47 and 48) or be sent to control system 1316 by the signal that radio communication will represent reflected impulse.Control system 1316 is based on from the average existence of relatively determining pacemaker 1604 and lead-in wire 1608 of the elapsed time of the signal of receiving coil 1504.If detect 1706 medical devices, then utilize the screening device that is different from passenger's imaging system 1310 that passenger 1602 is implemented 1,708 second screenings.An example of the second screening device is the passenger is manually searched or to be searched a person by the operator, and described operator is such as being (TSA) staff of U.S. transportation safety office or security staff's (not shown).But should be understood that, can detect violated thing with any suitable screening device at 1314 places, the second screening station, thereby so that described screening device can not consist of significant threat aspect the medical device generation interference that institute is implanted or wears or the infringement.

If do not detect 1706 medical devices, then utilize 1310 couples of passengers of passenger's imaging system 1602 to implement 1710 main sweeps.More particularly, pattern of passenger's imaging system 1310 usefulness is collected the data about passenger 1602 and the article that are associated with passenger 1602.The data that utilization is collected by passenger's imaging system 1310, operator (such as TSA staff or security staff) and/or control system 1316 determine whether 1712 alarm article are associated with passenger 1602.Here employed term " alarm article " refers to from the suspicious and/or not clear article of the collected data about passenger 1602.Suspicious object may comprise violated thing.Term as described above " thing of violating a ban " is often referred to any other article that are not allowed to hold for Illicit Drug, explosive, arcotic, weapon, threat article and/or passenger in the restricted area such as the airport.Alternatively, can utilize 1402 couples of passengers of detecting device 1602 that can operate under a plurality of frequencies to implement 1710 main sweeps.For instance, screening device 1400 can initial manipulation under the safe mode of using lower-wattage in order to detect and whether have medical device to be in passenger's 1602 bodies or by it to wear, and can operate in subsequently under the detecting pattern that uses higher-wattage in order to determine whether 1712 alarm article are associated with passenger 1602.

When definite 1712 described alarm article were not associated with passenger 1602, passenger 1602 was through checking that check point 1300 proceeds to shown in management area 1312(Figure 46), in order to fetch luggage and other article of removing.Passenger 1602 is subsequently by shown in outlet 1304(Figure 46) leave 1714 and check check points 1300.When definite 1712 described alarm article were associated with passenger 1602, passenger 1602 was directed 1708 to second screening zones 1314 further to investigate.

Above-detailed for detection of the exemplary embodiment of the system and method for target substance.Described system and method is not limited to specific embodiment as described herein, but opposite, each assembly of the operations of described method and/or system and/or equipment can divide the utilization of coming independently and with other operations as described herein and/or assembly.In addition, the operation described and/or assembly also can be limited in other system, method and/or the equipment or be used in combination with it, and are not limited to only utilize system as described herein, method and storage medium to put into practice.

Comprise at least one processor or processing unit and system storage such as computing machine as described herein.Described computing machine has at least computer-readable medium of certain form usually.And unrestricted, computer-readable medium comprises computer-readable storage medium and communication media as an example.

Computer-readable storage medium comprises volatibility and non-volatile, the removable and non-removable medium of implementing according to any method or technology, to be used for the information of storage such as computer-readable instruction, data structure, program module or other data.Communication media is embodied in computer-readable instruction, data structure, program module or other data in the modulated message signal (such as carrier wave or other transmission mechanisms) usually, and comprises any information delivery media.Those skilled in the art are familiar with modulated message signal, and one item or more characteristics are to be set this mode of information coding in signal or to change.The combination in any that in the scope of computer-readable medium, also comprises aforementioned content.

Although described the present invention in conjunction with exemplary explosive and/or arcotic detection system environment, embodiments of the invention operate with many other universal or special detection system environment or configuration.Described detection system environment is not intended to hint any restriction about the scope aspect of the use of any aspect of the present invention or function.In addition, described detection system environment is not to be construed as any dependence or the requirement about any assembly of illustrating or assembly combination in the exemplary operation environment.The example that goes for known detection system, environment and/or the configuration used with various aspects of the present invention includes, but is not limited to personal computer, server computer, hand-held or device on knee, multicomputer system, the system based on microprocessor, set-top box, programmable consumer electronics device, mobile phone, network PC, small-size computer, mainframe computer, comprises distributed computing environment of any aforementioned system or device etc.

Can in the general situation of computer executable instructions, embodiments of the invention be described, such as program assembly or the module carried out by one or more computing machines or other devices.Can utilize assembly or the module of any number and tissue to implement aspect of the present invention.For instance, aspect of the present invention is not limited to concrete computer executable instructions shown in the drawings and that describe or concrete assembly or module here.Alternative embodiment of the present invention can comprise its function ratio here shown and more or less different computer executable instructions or the assembly described.

Unless show separately, otherwise the execution of the operation in the embodiments of the invention that go out and describe shown here or execution order and non-key.That is to say, unless show separately, otherwise can implement described operation according to any order, and embodiments of the invention can comprise greater or less than operation disclosed herein.For instance, it is contemplated that in the scope aspect of the present invention before another operation, carry out simultaneously afterwards or with it or the execution specific operation.

In certain embodiments, term " processor " refers to any programmable system, reduced instruction set circuits (RISC), special IC (ASIC), the Programmable Logic Device (PLC) that comprises system and microcontroller and any other circuit or the processor that can carry out function as described herein generally.The example of front only is exemplary, and therefore is not intended to limit by any way definition and/or the implication of term " processor ".

When the element of the aspect of introducing the present invention or embodiment, " one ", " one ", " being somebody's turn to do " and " described " intention show and have one or more described elements.Term " comprises ", " comprising " and " having " be intended that inclusive, and show the add ons that can have except listed element.

This written description has used example to come open the present invention, comprising optimal mode, and allows those skilled in the art to put into practice the present invention, comprising any method of making and using any device or system and execution to merge.Scope of patent protection of the present invention is defined by the claims, and can comprise thinkable other examples of those skilled in the art.Other examples intention like this is in the scope of claims, and prerequisite is the literal language that its structural detail does not depart from claims, and perhaps it comprises and the literal language of claims equivalent structure element without essence difference.

Claims (24)

1. passenger scans system comprises:

Passenger's screening zone that the personnel of being configured for enter;

Center on the shielding part of at least a portion in described passenger's screening zone, described shielding part is configured to reduce the Radio frequency interference (RFI) in described passenger's screening zone; And

One or more sensors, its in the middle of the belly, groin and the pelvic area that are configured to the contiguous personnel that enter one or the At The Height of more are placed in described passenger's screening zone, and described one or more sensors are configured in response to one or the target substance generation signal of more being arranged in the middle of described belly, groin and the pelvic area.

2. according to claim 1 passenger scans system, wherein, described shielding part comprises a plurality of walls.

3. according to claim 2 passenger scans system, wherein, thereby described shielding part also comprises and is coupled to the platform that described a plurality of wall limits the seat that is configured to the support personnel.

4. according to claim 1 passenger scans system, wherein, described one or more sensors comprise at least one quadrupole resonance (QR) sensor.

5. according to claim 4 passenger scans system, wherein, described at least one QR sensor is configured to operate under the frequency relevant with personnel's body temperature.

6. according to claim 1 passenger scans system, wherein, described one or more sensors comprise a plurality of current branch that are configured to antisymmetry ground conduction current.

7. according to claim 6 passenger scans system, wherein, described a plurality of current branch comprises and being configured at the first current branch of conduction current on the first direction and the second current branch that is configured to conduction current on the second direction opposite with first direction, and described the first current branch and described the second current branch are positioned at the opposite side of the mid-plane of described passenger scans system.

8. passenger scans system comprises:

Thereby at least one wall and be coupled to the platform that described at least one wall limits the seat that is configured to the support personnel; And

Detection system, it comprises at least one inductosyn of the change in the personnel's that are configured to detect the existence that shows target substance the magnetic field.

9. according to claim 8 passenger scans system, wherein, described at least one wall comprises the first wall, the second wall and the 3rd wall, described the first and second walls are coupled to the surface, opposite end of described the 3rd wall.

10. according to claim 8 passenger scans system, wherein, described seat limits passenger's screening zone, described at least one wall and described platform are coupled to together around the shielding part of at least a portion in described passenger's screening zone, and described shielding part is configured to reduce the Radio frequency interference (RFI) in described passenger's screening zone.

11. passenger scans system according to claim 8, wherein, described at least one inductosyn comprises at least one quadrupole resonance (QR) sensor.

12. passenger scans system according to claim 11, wherein, described at least one QR sensor is configured to operate under the frequency relevant with personnel's body temperature.

13. passenger scans system according to claim 8, wherein, described at least one inductosyn comprises a plurality of current branch that are configured to antisymmetry ground conduction current.

14. passenger scans system according to claim 13, wherein, described a plurality of current branch comprises and being configured at the first current branch of conduction current on the first direction and the second current branch that is configured to conduction current on the second direction opposite with first direction, and described the first current branch and described the second current branch are positioned at the opposite side of the mid-plane of described passenger scans system.

15. a passenger scans system comprises:

The first side wall;

The second sidewall with described the first side wall relative positioning;

Along the mid-plane of described passenger scans system and the passage that between described the first and second sidewalls, limits;

Be positioned at described passage and be in the first current branch of the first side of mid-plane;

Be positioned at described passage and be in the second current branch of second side relative with the first side of mid-plane, described the first current branch and the second current branch have antisymmetric current flowing; And

Be configured to limit the safety device of the intrasystem heating undesirably of described passenger scans.

16. passenger scans system according to claim 15 comprises also that around the shielding part of at least a portion of described passage described shielding part is configured to reduce the Radio frequency interference (RFI) in the described passage.

17. passenger scans system according to claim 15, also comprise at least one sensor that is positioned at described passage, described at least one sensor is oriented to the contiguous passenger's who enters footwear, and is configured to generate signal in response to being in the target substance in the described footwear.

18. passenger scans system according to claim 15 also comprises the floor of being coupled to described the first and second sidewalls, wherein said the first and second current branch are positioned in the sensor outer cover that is arranged in described floor.

19. passenger scans system according to claim 18, wherein, restriction is configured to reduce the shielding part of the Radio frequency interference (RFI) in the described passage thereby described the first side wall, described the second sidewall and described floor are coupled.

20. passenger scans system according to claim 15 also comprises inductosyn, described inductosyn comprises described the first and second current branch, and described inductosyn is configured to operate under the frequency relevant with personnel's body temperature.

21. a screening device comprises:

Transmitting coil, its be configured to frequency that normal human subject body temperature is associated under radio frequency (RF) energy is applied in passenger's the region of interest; And

Receiving coil, it is configured to detect in response to representing the passenger with it or the energy perturbation of the RF energy of medical device in the body.

22. screening device according to claim 21, wherein, described transmitting coil is configured to apply the RF energy under the frequency that is higher than 1 megahertz.

23. screening device according to claim 21, wherein, described screening device comprises inductosyn, and it comprises:

Be configured to launch to passenger's region of interest the transmitting coil of at least one pulse; And

Be configured to detect the receiving coil of the reflected impulse that is sent by medical device in response to described at least one pulse.

24. screening device according to claim 23, wherein, described receiving coil is configured to generate the signal that represents reflected impulse, and described signal is sent to control system in order to determine the passenger or whether have medical device in the body with it.

Images