WO2006097990A1 - 付着物検査装置及び付着物検査方法 - Google Patents
付着物検査装置及び付着物検査方法 Download PDFInfo
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- WO2006097990A1 WO2006097990A1 PCT/JP2005/004461 JP2005004461W WO2006097990A1 WO 2006097990 A1 WO2006097990 A1 WO 2006097990A1 JP 2005004461 W JP2005004461 W JP 2005004461W WO 2006097990 A1 WO2006097990 A1 WO 2006097990A1
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- Prior art keywords
- baggage
- unit
- collection filter
- inspection apparatus
- deposit
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4022—Concentrating samples by thermal techniques; Phase changes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N2001/028—Sampling from a surface, swabbing, vaporising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4022—Concentrating samples by thermal techniques; Phase changes
- G01N2001/4027—Concentrating samples by thermal techniques; Phase changes evaporation leaving a concentrated sample
Definitions
- the present invention relates to a technique for inspecting a substance (sample substance) attached to an object to be inspected, and mainly relates to an attachment inspection apparatus and an attachment inspection method for inspecting a substance attached to a baggage or a human body.
- Patent Document 1 Patent Document 2, Patent Document 3, and Patent Document 4 are techniques for inspecting baggage carried out at boarding gates such as airports and harbors for dangerous substances such as explosives and narcotics. The technology has been released. These are all technologies that estimate the substances contained in the baggage by inspecting the sample material (particulate matter) adhering to the surface of the baggage.
- Patent Document 1 discloses a technique in which an inspector wipes the surface of a baggage with a wiping material, thereby transferring a sample substance attached to the surface of the baggage to the wiping material.
- this technique after the wiped material is heated to vaporize the wiped sample material, the vaporized gas is ionized, and its mass-to-charge ratio is measured using mass spectrometry.
- This is a technology for determining the presence and type of a sample substance by comparing it with the mass-to-charge ratio of the stored dangerous substance.
- Patent Document 2 and Patent Document 3 disclose a deposit inspection apparatus that detects dangerous substances or vapors adhering to a person or an object.
- the automatic baggage inspection technique disclosed herein is a sampling head equipped with a rotating brush force that spreads over the entire width of the sampling chamber for storing the baggage and sweeps the exposed surface of the baggage, such as a spring, a sensor or a servo. This is a technique to collect the sample material adhering to the package by bringing it into contact with the surface of the package.
- Patent Document 4 discloses a technique for sucking air from the surface of a load and collecting it on a collection medium disposed at a suction outlet. Four collection media are placed on a large disk.
- One is always facing the suction outlet and the other is facing the inlet of the ion mobility spectrometer that detects dangerous substances. Then, while rotating the disk at a predetermined angle, it is a technique for peeling off the sample material adhering to the load and judging the danger.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2004-301749
- Patent Document 2 JP 09-126965 A
- Patent Document 3 Japanese Patent Laid-Open No. 09-126966
- Patent Document 4 Japanese Patent Laid-Open No. 07-6729
- Patent Document 1 By the way, in the technique of Patent Document 1, it is necessary for an inspector to carefully wipe the entire surface of the inspection object with a wiping material. However, the inspection location varies depending on the inspector, so there is a problem that the inspection conditions vary. In addition, since the entire baggage is wiped off, there is a problem that it takes time to inspect one inspection object. For this reason, it is necessary to place multiple inspectors, and there are problems such as high inspection costs. In addition, the probe described in Patent Document 1 does not specifically describe the conditions of compressed air necessary for sampling and the effects. Further, since the inspector performs the probe operation, the inspector is required to have a skillful technique for scanning the probe tip along the surface of the inspection object having complicated irregularities.
- Patent Document 4 there is a problem that the surface of the baggage to be inspected is limited because the air entrance is only in one direction.
- a member that sucks air, a collection medium that collects the sample material, and an ion mobility spectrometer that analyzes the sample material are mounted on a disk! / Because it needs to be placed on the rotating orbit of the collecting medium, the air sucking member and the sample material are captured.
- the layout of the collection medium to be collected and the ion mobility spectrometer that analyzes the sample substance are limited.
- Patent Document 1 there is a problem of self-cleaning after detecting dangerous substances from baggage as a common problem of the deposit inspection technology described in Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4, but there is a specific solution. Means for is not shown.
- the present invention aims to solve the above-mentioned problems, and appropriately collects a sample material adhering to the surface of baggage without requiring a skilled technique from an inspector. If the substance contains a dangerous substance (dangerous substance), the inspection is carried out. Furthermore, the present invention provides a deposit inspection apparatus having a self-cleaning function.
- the present invention provides a deposit inspection apparatus, in which a compressed gas is blown onto an inspection target to which a sample substance adheres, and the separated sample substance is collected by a collecting filter.
- An adhering matter inspection apparatus comprising: a collection unit; and an inspection unit that analyzes the sample material collected by the collection filter, wherein the compressed gas is applied to the surface of the inspection object at a wind speed of 20 mZs or more. It has at least one nozzle that sprays at a speed.
- the sample material adhering to the object to be inspected is peeled off by the wind pressure of compressed gas such as air, so that the amount of sample material collected by the collection filter can be increased and the inspection conditions vary. Can also be reduced.
- the particles remaining in the collection filter can be removed by putting the collection filter in and out of the inspection unit, turning the collection filter upside down, and returning it to the collection unit. It can be used continuously without changing the collection filter for each inspection.
- a kimono inspection device can be realized.
- the present invention it is possible to increase the amount of sample material that is peeled off and collected without contact with the inspection object without requiring a skilled technique from the inspector.
- a deposit inspection apparatus and method capable of easily and accurately identifying the sample substance.
- a deposit inspection apparatus and method capable of self-cleaning are provided.
- it is possible to automatically use and inspect the collection filter continuously it is possible to provide a deposit inspection apparatus and method that can improve the operating rate and reduce the number of personnel required for the inspection. Is done.
- dangerous substances such as explosive fine particles or explosive additives are exemplified as the sample material detected by the deposit inspection apparatus 1, and the baggage of the subject to which these dangerous substances are attached is to be inspected. It is illustrated as a thing.
- the explosive substances stimulants and other chemicals, chemical substances that adversely affect the human body, bacteria that adversely affect the human body, microorganisms such as viruses, etc.
- Sample substances containing substances that are expected to have an adverse effect on the human body can be detected, and postal items, human bodies, imported / exported articles, etc. can be used as inspection objects.
- the sample substance detected by the deposit inspection apparatus 1 can be a sample substance containing a specific component substance without particular limitation.
- FIG. 1 is a block diagram showing a main configuration of an attached matter inspection apparatus 1 according to the first embodiment of the present invention.
- FIG. 2 is a perspective view showing an appearance of the deposit inspection apparatus 1 according to the first embodiment of the present invention.
- the deposit inspection apparatus 1 of the first embodiment includes an deposit inspection section 2, a baggage delivery section (delivery section) 3, a collection filter transport section (transport section) 4, an deposit collection section (collection section) 5, It consists of a power supply unit 6, a central control unit 7 and an operation panel 11.
- the power supply unit 6 that supplies power required for the operation of each unit of the apparatus is controlled by the central control unit 7.
- Central control unit 7 and inspection unit controller 8 It is connected to the section controller 9, the collection section controller 10, and the delivery section controller 28.
- the operation condition of each part of each device is input from the operation panel 11, and the central control unit 7 controls the operation of each part of the slave device according to the input operation condition.
- the deposit collecting unit 5 includes a baggage recognition unit (recognition unit) 12 for recognizing the outer shape of the inspection object, and a baggage size for calculating a virtual outer shape of the inspection object from the output result of the baggage recognition unit 12.
- Sampling chamber 27 for storing the inspection object and the nozzle calculating part 13 and the nozzle driving part 14 for moving the nozzle 36 (see FIG. 5) along the virtual outline of the inspection object calculated by the baggage size calculation part 13
- a compressed gas generating section 15 for injecting an air jet (compressed gas) from the nozzle 36 and an intake section for sucking the inside of the sampling chamber 27 through a pipe 41 (see FIG. 2) connected to the lower portion of the sampling chamber 27 16 and a collection filter 52 (see FIG.
- the sample substance adhering to the surface of the inspection object is peeled off and collected by a collecting filter 52 ⁇ m.
- the collection filter 52 (see FIG. 2) that collects the sample substance is taken out from the pipe 41 by the collection filter transport drive unit 17 of the collection filter transport unit 4, and is then removed from the oven ( Heating unit) 18 is inserted.
- the heating unit 18 of the deposit inspection unit 2 is maintained at a constant temperature, and the collection filter 52 inserted in the heating unit 18 is heated to a temperature at which the adhering sample substance is vaporized. .
- the sample material collected in the collection filter 52 is also heated and vaporized at the same time to generate sample gas.
- the heating unit 18 is connected to the ion source unit 19.
- the sample gas is introduced into the ion source unit 19 by the suction pump 20 and ionized.
- the ions generated by the ion source unit 19 are subjected to mass analysis by the mass analysis unit 21.
- the ion source unit 19 and the mass analysis unit 21 are exhausted by the exhaust unit 22.
- the storage means of the data processing unit 23 stores the standard mass spectrometry data (mass-to-charge ratio (mass number of ions Z valence of ions)) relative to the sample material attached to the baggage 25.
- a database containing the intensity is stored.
- the output signal of the detector of the mass spectrometer of the mass analyzer 21 is sent to the data processor 23, where the database read from the storage means and the result of mass analysis of ions derived from the dangerous substance are collated.
- Data processing is performed to identify dangerous substances (explosives, etc.) contained in the sample substance.
- the identified dangerous substances (explosives, etc.) and the results of Z or mass spectrometry are displayed on the operation panel 11.
- FIG. 3 is a front view illustrating the configuration of the baggage recognition unit 12 (see FIG. 1) of the deposit collection unit 5 of the deposit inspection apparatus 1 according to the first embodiment of the present invention.
- the front view of FIG. 3 is a view seen from the negative direction of the X axis in FIG. 2, and the description of each part other than the baggage recognition part 12 is omitted.
- the baggage delivery drive unit 31 is provided with a speed sensor.
- the speed sensor signal is transmitted from the delivery unit controller 28 to the baggage size computation unit 13 via the central computation unit 7 and is constantly monitored as the speed at which the baggage 25 is delivered.
- the preferred size of the hand luggage 25 that can be inspected in this embodiment is about 40 cm wide, 50 cm high, and 70 cm deep.
- a baggage recognition section 12 is provided outside the maximum width 40cm and the maximum height 50cm of the inspectable baggage 25.
- the baggage recognizing unit 12 includes light projectors 32, 32,... Arranged in series at intervals of 3 cm in the vertical direction and the horizontal direction, and a light receiver that receives light from the light projectors 32, 32,. 33, 33 ... are arranged on opposite sides.
- a baggage recognition unit 12 including 15 pairs of projectors 32 and receivers 33 in the horizontal direction and 19 pairs in the vertical direction is provided at the entrance 30 of the sampling chamber 27.
- the light receiver 33 of the baggage recognition unit 12 cannot receive the light when the baggage 25 blocks the light from the facing projector 32.
- the LZH signal (see Fig. 4 (b)) indicating whether or not the light receiver 33 is receiving light is transmitted to the baggage size calculation unit 13 (see Fig. 1)
- the cross-sectional shape of the baggage 25 is detected there.
- the And this baggage 25 Since it is sent in the longitudinal direction of the tray 26 by the feeding unit 3 (see FIG. 2), the outer shape of the baggage 25 is adjusted by matching the cross-sectional shape of the baggage 25 detected at a minute time interval by the baggage recognition unit 12. Be grasped.
- FIG. 4 is a diagram illustrating a process of detecting the size of the baggage 25 by the baggage recognition unit 12 used in the first embodiment of the present invention.
- FIG. 4 (a) is a schematic diagram showing the positional relationship between the baggage recognition unit 12 and the baggage 25 as seen from the Y-axis direction of FIG. Note that items other than baggage 25 and baggage recognition unit 12 are omitted.
- the baggage recognition unit 12 detects the size in the height direction and depth direction of the baggage 25 for simplicity of explanation.
- 33 (33a, 33b, 33c---, 33g ) Is a diagram with only seven.
- the means for detecting the size of the baggage 25 in the height direction and the depth direction will be described.
- a similar baggage recognition unit 12 provided in the vertical direction of the baggage 25 is described.
- the size of the baggage 25 in the width direction is detected.
- FIG. 4 (b) shows a light receiver 33 when a cross section of baggage 25 at points 1, 2, 3, and 4 passes through the baggage recognition unit 12 shown in FIG. 4 (a).
- the signal states of (33a, 33b, 33c---, 33g) are shown.
- the horizontal axis indicates the time in seconds.
- the state in which the receiver 33 blocks the light from the projector 32 and outputs a signal is the H signal, and the light is received.
- the signal is output and the state is expressed as an L signal.
- Baggage 25 is placed on tray 26 of baggage delivery section 3 (see Fig. 1) (see Fig. 2) and conveyed in the direction of the arrow in Fig. 4.
- the speed at which the baggage 25 is delivered is determined based on a signal detected by a speed sensor (not shown) added to the baggage delivery drive unit 31 (see FIG. 1) as described above. Further, the delivery unit controller 28 controls the baggage delivery drive unit 31 based on a signal from the speed sensor so that the delivery speed of the baggage 25 becomes a predetermined value.
- the signal of the light receiver 33 of the baggage recognition unit 12 changes.
- the light receiver 33c, the light receiver 33d, the light receiver 33e, and the light receiver 33f detect at the point 1 indicating the position of the end face of the baggage 25.
- the light receiver 33b, the light receiver 33c, the light receiver 33d, the light receiver 33e, and the light receiver 33f detect at the point 2 indicating the start position of the convex portion of the baggage 25.
- Convex part of baggage 25 The receiver 33b is not detected at the point 3 indicating the end point position. All receivers 33 are undetected at point 4, which indicates the end position of baggage 25.
- the change in the signal detected by the light receiver 33 of the baggage recognition unit 12 is transmitted to the baggage size calculation unit 13 (see FIG. 1).
- the baggage size calculation unit 13 shown in FIG. 1 outputs the delivery speed of the baggage 25 and the speed sensor force of the baggage delivery unit 3 during the time until the signal of each baggage recognition unit 12 changes. The calculation is based on the received signal. The lateral direction of the baggage 25 is determined from the delivery speed obtained as a result of this calculation, the LZH signal output from each light receiver 33 of the baggage recognition unit 12, and the time until these LZH signals are switched to each other. The size of the outer shape seen from the above is calculated.
- the distance L1 from point 1 to point 2 is the point at time T1 from the detection of receiver 33c, receiver 33d, receiver 33e, and receiver 33f at point 1 to the detection of receiver 33b at point 2.
- the distance from point 1 to point 2 can be calculated by adding the delivery speed VI from point 1 to point 2.
- the distance L2 from point 2 to point 3 is the delivery speed V2 from point 2 to point 3 at time T2 until the receiver 33b detects at point 2 and the force is not detected at point 3.
- the distance L3 from point 3 to point 4 is the time T3 from point 3 until receiver 33b is not detected at point 3 until all receivers 33 are not detected at point 4. Calculate by dividing the delivery speed V3 up to point 4.
- the length of baggage 25 in the depth direction is calculated by adding the distances L1, L2, and L3 obtained by the above means.
- baggage 25 has a size that is equal to or greater than the height at which receiver 33c is disposed, and points 2 and 3 In the range of the length L2 between, the baggage 25 is not less than the height at which the receiver 33b is arranged, and in the range of the length L3 of the points 3 and 4, the baggage 25 is It can be determined that the shape is larger than the height at which 33c is arranged.
- the maximum size of the baggage 25 is assumed.
- the end face of the baggage 25 is located between the detected light receiver 33 and the light receiver 33 that has not been detected.
- point 1 it is assumed that the height of the actual baggage 25 is between the actually detected light receiver 33c and the light receiver 33b that has not detected power.
- the height of the baggage 25 at the point 1 is assumed to be a position obtained by adding 1.5 cm to the position of the light receiver 33c.
- the presence or absence of the baggage 25 is monitored between the light projector 32 and the light receiver 33 by a light line.
- the actual baggage 25 has a height just below the light receiver 33b when the light receiver 33b reacts.
- the end face of the baggage 25 is located at a position higher than the height assumed by the above-described method.
- the baggage size detector interval 31 is 3 cm, an error of a maximum of 5 cm will occur with respect to the size of the virtual baggage 25, but on the surface of the baggage 25 that is the object of the present invention. There is no problem in peeling off the adhering sample material. The reason for this will be described later.
- the above processing is performed in the process of delivering the baggage 25 by the baggage size calculation unit 13, and when the delivery of the baggage 25 into the sampling chamber 27 is finished, the above-described outer shape calculation of the baggage 25 is finished. ing.
- FIG. 5 (a) shows a front view including a partial cross section inside the sampling chamber 27.
- the cross section passes through the center of the pipe 41 and is perpendicular to the baggage transport direction of the sampling chamber 27, and the front view is a view seen from the negative direction of the X axis in Fig. 2. Yes, the description of each part other than those related to the nozzle 36 is omitted.
- FIG. 5 (b) shows a side view including a partial cross section inside the sampling chamber 27.
- the cross section is a cross section that passes through the center of the sampling chamber 27 and is parallel to the baggage transport direction of the sampling chamber 27.
- the side view is a side view that also shows the negative direction force of the Y-axis in Fig. 2, and the description of each part other than those related to nozzle 36 is omitted.
- FIG. 6 shows the results of measuring the relationship between the wind speed of the air jet and the recovery rate of C4 explosive as the detected sample material, using the configuration of the deposit inspection apparatus 1 of the first embodiment.
- C4 explosive is a kind of plastic explosive. The measurement was carried out by injecting an air jet with different wind speed conditions onto the leather surface to which the C4 explosive was attached and placing the collection filter 52 that collected the C4 explosive in the heating section 18 (see Fig. 7) described later. The signal intensity of the C4 explosive was measured by the mass spectrometer 21 (see Fig. 9), and the signal strength of the obtained C4 explosive was determined.
- the size of the nozzle 36 is set to 2 mm in diameter so that the air jet can be injected over a wide range, and the intake speed of the gas in the sampling chamber 27 at the time of measurement is 1,600 liters / minute in FIG.
- the recovery rate of C4 explosives increases rapidly depending on the wind speed up to a wind speed of 40 m / s.
- the increase in the recovery rate of C4 explosives is moderate at wind speeds of 40 m / s or higher. In particular, it was found that the recovery rate of C4 explosives could not be significantly improved under wind speeds of 130 m / s or higher.
- the signal intensity derived from the C4 explosive obtained was significantly reduced.
- an air jet with a wind speed of 40 m / s or more and 130 m / s or less is jetted onto the leather surface, and the sampling chamber
- the tip of the nozzle 36 In order to inject an air jet from Om / s to 130 m / s, the tip of the nozzle 36 must be close to a distance of 3 to 9 cm from the surface of the baggage 25, and the experimental force was also determined.
- the nozzle 36 is provided as shown in FIGS. 5 (a) and 5 (b).
- the nozzle 36a for injecting an air jet to the bottom of the baggage and the nozzle 36b for injecting an air jet to the top and side of the baggage are provided.
- the nozzle 36a is 3 cm from the transport path of the tray 26 at the sampling chamber 27 entrance 30 described above. Below, it is provided in a cylindrical tube 37 longer than 40 cm, which is the width of the inspectable baggage 25. In the cylinder 37, 20 nozzles 2a having a diameter of 2 mm are opened at an interval of 3 cm with an inclination of 30 degrees with respect to the bottom surface of the tray 26 in the transport direction. The cylindrical tube 37 is rotatable with respect to the central axis of the cylindrical tube 37. The rotational drive of the cylindrical tube 37 is controlled by the nozzle drive unit 14 (see FIG. 1).
- the nozzle 36b can be moved into the sampling chamber 27 by a linearly moving mechanism 70 in the depth direction of the sampling chamber 27 with one pair on both sides with respect to the direction of carrying the baggage 25, and the entrance 30 of the sampling chamber 27 Are supported by the tip portions of arms 39a and 39b having three joints 38 (38a, 38b and 38c) which can rotate in the plane of the arm.
- the drive of each joint 38 of the arm 39 (39a, 39b) is controlled by the nozzle drive unit 14 (see Fig. 1), and two nozzles 36b with a diameter of 2 mm are provided at 3 cm intervals at the tip of the arm 39. (See Fig. 5 (b)).
- the number and relative arrangement of the nozzles 36b can be changed as appropriate.
- the compressed gas generator 15 for injecting an air jet uses a turbofan, which is a well-known technique.
- the compressed gas generating unit 15 is housed in a collecting unit casing 35 (see Fig. 2) at the upper part of the sampling chamber 27, and the nozzle 36 (36a) is adjusted by adjusting the amount of air supplied by an air valve (not shown).
- 36b) Air is supplied. The air valve is adjusted by the collection controller 10.
- the fact that the baggage 25 has reached the sampling chamber entrance 30 is also detected by the collection controller 10 (see Fig. 1). If it judges, it will drive the intake part 16 which inhales the inside of the sampling chamber 27, and will drive the compressed gas generation part 15 (refer FIG. 1) simultaneously. Next, an air valve (not shown) is opened, compressed gas is supplied to 20 nozzles 36 a shown in FIG. 5, and an air jet is injected onto the bottom surface of the baggage 25.
- the nozzle drive unit 14 is operated to dispose the nozzle 36b of the arm 39a on the upper surface of the baggage 25 on the carrying direction side of the baggage 25 and the nozzle 36b of the arm 39b on the opposite side of the carrying direction. Then, with respect to the virtual outline of the baggage 25 calculated by the baggage size calculation unit 13, the air jet having the wind speed of 40 m / s to 130 m / s described above is separated from the distance of 3 cm to 9 cm. Spray onto the surface. In this embodiment, this distance is 5 cm.
- the collecting unit controller 10 determines that the baggage 25 has been transported into the sampling chamber 27 based on a signal change in the baggage recognition unit 12, the air valve is closed and the injection of air jet from the nozzle 36 is stopped. To do.
- the virtual outline of the baggage 25 calculated by the baggage size calculation unit 13 with respect to the actual size of the baggage 25 has an error of + -1.5 cm.
- the nozzle 36 In order to inject an air jet with a wind speed of 40m / s to 130m / s onto the surface of the baggage 25 from the nozzle 36 having a diameter of 2mm, the nozzle 36 is separated from 3cm to 9cm as described above, Need to scan
- the target position of the movement target position of the nozzle 36 is 5 cm away from the virtual outline.
- the actual tip position of the nozzle 36 is 5 cm, which is the movement target position of the nozzle 36, and the distance obtained by adding the error of the virtual outline described above + —1.5 cm is the surface baggage of the actual baggage 25. It is the distance to the nozzle 36 tip.
- the periphery of the baggage 25 is scanned within the range of 3.5 cm to 6.5 cm from the actual outer shape of the baggage 25.
- the nozzle 36 is placed in the baggage 25 within a range in which an air jet with an effective air velocity of 40 m / s to 130 m / s can be ejected from the surface of the baggage 25. Scan along the surface.
- the projectors 32, 32,. (Receiver 33, 33 ⁇ ) (See Fig. 3)
- the distance between the nozzle 36 (Fig. 5) and the wind speed from 40m / s to 130m should be shorter than the distance that can be injected onto the surface of baggage 25 . If the distance between these projectors 32, 32 ...
- the baggage calculated by the baggage size calculation unit 13 while the nozzle 36b is driven by the nozzle drive unit 14 to each joint 38 (38a, 38b, 38c) of the arm 39 and the linear movement mechanism unit 70.
- Baggage 25 longer than the depth dimension of 25 It is lowered to the lower surface of the baggage 25 while scanning the surface of the baggage 25 at a distance of about 5 cm from the virtual outline of the baggage 25.
- the collecting unit controller 10 closes the air valve to finish the injection of the air jet, moves the nozzle 36b to the retracted position, and then stops the intake unit 16.
- the degree of freedom of the arm 39 provided with the nozzle 36b is not limited to this embodiment, and it is more appropriate to change the degree of freedom of the arm 39 appropriately and widen the movable range of the nozzle 36b. Since the nozzle 36b can be scanned precisely along the surface of the baggage 25, it is effective in achieving the purpose of peeling the sample material adhering to the baggage 25.
- FIG. 7 is a top view showing the positional relationship among the sampling chamber 27, the deposit inspection unit 2, and the collection filter transport drive unit 17 in the deposit inspection apparatus 1 of the present embodiment. These top views are top views as seen from the positive direction of the Z axis in FIG. 2, and are schematic views showing each part simply.
- FIG. 8 is a view for explaining the collection filter 52 inserted in the middle of the pipe 41 connecting the sampling chamber 27 and the intake section 16 (see FIG. 2).
- FIGS. 8A and 8C are cross-sectional views of a part of the pipe 41 holding the collection filter 52.
- FIG. 8 (a) and 8 (c) the cross-section is a cross-sectional view of a part of the pipe 41 that passes through the upper end surface of the collection filter insertion port 47 of the pipe 41 and also shows the positive force of the Z axis.
- a part of the piping 41 and each part other than the collecting filter holding part 46, the collecting filter 52, and the hand part 53 of the collecting filter transport driving part 17 are omitted.
- FIGS. 8 (b) and 8 (d) are side views including a partial cross-section of FIGS. 8 (a) and 8 (c).
- the cross section is a cross section passing through the center of the pipe 41, and is a side view of the positive direction force of the Y axis.
- the collection filter 52 of the present embodiment includes a filter part 42 and a block frame 43 that holds the filter part 42.
- the filter part 42 is a 57 mm circle having the same inner diameter as the pipe 41.
- the surrounding area is held by an aluminum block frame 43 with a thickness of 8 mm.
- Aluminum A spherical body 44 having a diameter of 6 mm, which is necessary for fixing the collection filter 52 to the sampling chamber 27 and the heating unit 18 (see FIG. 7), is connected to one of the block frames 43 made of steel.
- the other side of the block frame 43 is a cylindrical filter having a diameter of 4 mm, which is necessary for holding the collection filter 52 by the hand unit 53 when the collection filter 52 is conveyed by the collection filter conveyance drive unit 17.
- Two bosses 45 are provided.
- the filter part 42 is a non-penetrating, 12.7 micron mesh stainless steel filter having excellent heat resistance and durability. Because it is a non-penetrating filter, it can collect particles of 10 to 20 microns.
- the collection filter holding unit 46 fixes the collection filter 52 by grasping the sphere 44 connected to the block frame 43 of the collection filter 52 as shown in FIGS. 8 (a) and 8 (c).
- the collection filter holding part 46 is arranged on the side opposite to the collection filter insertion port 47 of the pipe 41 and the heating part 18 to be described later, and a claw 49 for gripping the sphere 44 arranged on the end face of the block frame 43;
- a movable boss 50 and a cam mechanism (not shown) for opening and closing the claw 49 at the position of the movable boss 50 are provided. This cam mechanism is housed in the collection filter holding unit housing 89.
- FIG. 8 (a) when the movable boss 50 of the collection filter holding section 46 is pushed in with a spherical body 44 connected to the block frame 43 of the collection filter 52, the cam mechanism functions. The nail 49 is closed and the sphere 44 is grasped as shown in FIG. 8 (c). In this state, when the sphere 44 is further pushed in and then the collection filter 52 is pulled out, the claw 49 is opened by the function of the cam mechanism to open the sphere 44 as shown in FIG. 8 (a). The collection filter 52 is pushed and pulled out by the collection filter transport unit 4.
- the collection filter transport drive unit 17 conveys the collection filter 52 while giving the hand unit 53 gripping the collection filter 52 and the hand unit 53 with expansion and contraction and rotational freedom.
- Two pairs of transport arms 54 are provided, and the hand unit 53 can rotate in any direction and move straight to any position.
- each transfer arm 54 It is possible to move straight ahead independently.
- a hole 55 into which two bosses 45 provided on the block frame 43 of the collection filter 52 can be inserted is provided at the tip of the hand portion 53.
- a plate spring 56 rounded into a cylindrical shape is housed inside the hole 55, and when the boss 45 of the block frame 43 is inserted into the hole 55, the boss 45 is held by the reaction force of the plate spring 56. Therefore, the collection filter 52 is held by the hand portion 53.
- the collection filter 52 is held in the pipe 41 by the collection filter holding unit 46.
- the transfer arm 54 is further extended and then the transfer arm 54 is contracted as shown in FIGS. 7 (b) to 7 (c)
- the pawls 49 of the collection filter holder 46 are forced to move as shown in FIG. 8 (a).
- the mechanism 51 opens in conjunction with the retracting movement of the transfer arm 54, and the collection filter 52 is pulled out from the pipe 41. After the transport arm 54 is retracted to a predetermined position as shown in FIG.
- the hand unit 53 is rotated to a position facing the heating unit 18 as shown in FIG. 7 (d).
- the transfer arm 54 is advanced, and the collection filter 52 is inserted into the heating unit 18 from the heating unit insertion port 51 (see FIG. 2).
- a filter holding unit 46 is also provided on the opposite side of the heating unit 18 from the collection filter transport unit 4, and the collection filter 52 inserted into the heating unit 18 is held by the filter holding unit 46. Is done.
- the collection filter 52 in the collection filter transport drive unit 17, the collection filter 52 is inserted into the heating unit 18, and at the same time, another collection filter 52 is held in the node unit 53.
- the transport arm 54 is extended and inserted into the piping 41 of the sampling chamber 27 to prepare for the next inspection of the baggage 25.
- FIG. 9 shows a top view in which the heating unit 18, the ion source unit 19, and the mass analysis unit 21 are partially sectioned.
- the cross section is a cross section passing through the center of the introduction pipe 58, and the top view is a view seen from the positive direction of the Z axis.
- the heating unit 18, the ion source unit 19, the mass analysis unit 21, and the suction pump unit 20 are illustrated in a simplified manner, and the other components are omitted. As shown in FIG.
- the basic configuration of the heating unit 18 includes a box-shaped storage unit 57, a collection filter holding unit 46 that holds the collection filter 52, an ion source unit 19, and a heating unit 18. And a heat source 59 provided in the storage unit 57 and the introduction pipe 58 for promoting the adsorption prevention or desorption of the sample gas, and a thermometer 60 for measuring the temperature.
- the thermometer 60 and the heat source 59 are connected to the inspection controller 8 (see Fig. 1) and can be controlled to a desired temperature.
- the temperature of the storage part 57 and the introduction pipe 58 can be heated and maintained at any temperature between room temperature and 300 ° C. In this embodiment, the temperature of the storage section 57 and the introduction pipe 58 is set to 200 ° C.
- the storage section 57 of the heating section 18 includes a heating section inlet 51 into which the collection filter 52 is inserted, and a sphere 44 provided on the block frame 43 of the collection filter 52 on the opposite side of the heating section insertion opening 51.
- the passing window 48 is open!
- the transfer arm 54 is extended, and the collection filter 52 held in the hand unit 53 is inserted into the storage unit 57 from the throat inlet 47. Then, as shown in FIG. 9 (b), the sphere 44 provided on the block frame 43 of the collection filter 52 passes through the window 48 of the storage unit 57, and is disposed outside the storage unit 57. It is pressed against the movable boss 50. Further, the transport arm 54 (see FIG. 7 (e)) is extended to hold the sphere 44 provided on the block frame 43 of the collection filter 52 with the claw 49 of the collection filter holding section 46, and then the transfer arm.
- the collection filter 52 and the hand unit 53 are separated, and the transfer arm 54 is moved to the retracted position, so that the sample substance is collected in the collection filter 52 as shown in FIG.
- the collected surfaces can be held inside the storage portion 57 with the surface facing up. Since the insertion opening 40 and the window 48 of the storage unit 57 are blocked by the block frame 43 of the collection filter 52, the collection filter 52 is effectively heated.
- the collection filter transport drive unit 17 of the present embodiment is used, only the collection filter 52 is held in the pipe 41 and the heating unit 18, so that the collection via the collection filter transport drive unit 17 is performed. There is no possibility of cross-contamination of filter 52. In addition, since only the collection filter 52 is heated in the heating unit 18, the gas generated from the hand unit 53 and the transfer arm 54 of the collection filter 52. As a result, the detection sensitivity of the deposit inspection unit 2 does not decrease. Further, according to the present embodiment, the sampling chamber 27 and the heating unit 18 can be arranged at physically separated positions, so that the deposit collection unit 5 and the deposit inspection unit 2 do not increase the occupied floor area. Can be freely arranged.
- the sample gas generated in the heating unit 18 passes through the introduction pipe 58 by the suction pump 20, and enters the space between the first apertured electrode 61 and the counter electrode 62 in the ion source unit 19. Carried.
- a needle electrode 63 is disposed in the ion source unit 19, and a high voltage is applied between the needle electrode 63 and the counter electrode 62.
- Corona discharge is generated near the tip of the needle electrode 63, and is first turned on with nitrogen, oxygen, water vapor and the like. These ions are called primary ions. The primary ions move to the counter electrode 62 side by the electric field.
- the vaporized sample gas that has been carried into the space between the first electrode 61 with pores and the counter electrode 62 passes through the opening 64 provided in the counter electrode 62 and is a space in which the needle electrode 63 is disposed. And reacts with primary ions to be ionized.
- the method of generating primary ions using corona discharge in the atmosphere and ionizing chemical substances in the gas using the chemical reaction between the primary ions and the gas is called atmospheric pressure chemical ionization. It is.
- the ion source unit 19 is provided with a heat source (not shown) and a thermometer (not shown).
- the supply of electric power to the heat source is controlled by the inspection unit controller 8 (see Fig. 1) based on the output signal of the thermometer, so that the vaporized sample gas force S is not adsorbed inside the ion source unit 19.
- the ion source section 19 is always heated and maintained at a desired temperature.
- the ions of the sample gas generated by the atmospheric pressure chemical ionization method are used as the first electrode 6 with pores. 1 through the first ion introduction pore 65, the differential exhaust portion 66 exhausted by the exhaust portion 22 (see FIG. 1), and the second ion introduction pore 68 of the second pore electrode 67. Introduced into the mass spectrometer 21. The mass analysis unit 21 is exhausted by the exhaust unit 22. The ion source unit 19 and the mass analysis unit 21 constitute one container 69.
- the ions of the sample gas introduced into the mass analyzer 21 are subjected to mass analysis by an ion trap mass spectrometer.
- a mass-to-charge ratio value for identifying one or more sample substances to be detected is set in advance.
- the output signal of the mass spectrometer detector related to the mass-to-charge ratio required to identify the sample material to be detected is continuously processed at predetermined time intervals as a result of the mass analysis of the sample gas ions.
- the data processing unit 23 stores the necessary mass analysis data (mass-to-charge ratio value and relative intensity) to identify specific sample substances (dangerous substances) such as multiple explosives and drugs, and specific samples.
- the threshold value for signal strength which is the basis for the same judgment of substances (dangerous substances), is stored as a database.
- the mass-to-charge specific force of the signal sent to the data processing unit 23 The storage means power
- the signal sent when the specific sample substance (dangerous substance) to be detected is identified by collating with the read database. The operator may be informed of the possibility of the presence of a specific sample substance (dangerous substance) to be detected on the operation panel, provided that the intensity of the sample is greater than the judgment threshold.
- FIG. 10 shows the result of inspecting the baggage 25 to which the C4 explosive particles are adhered, using the configuration of the adhering matter inspection apparatus 1 of the first embodiment.
- the vertical axis indicates ion intensity in arbitrary units, and the horizontal axis indicates time in seconds.
- a clear signal indicating that the C4 explosive component has been detected can be obtained. From this result, by using the deposit inspection apparatus 1 of the first embodiment, the C4 explosive particles are separated from the actual baggage 25 to which the C4 explosive particles have adhered by using an air jet and collected by the collecting filter 52. It was proved that it was vaporized by the heating unit 18 and C4 explosive components could be detected by the mass analysis unit 21. From the experiment, it was confirmed that the deposit inspection apparatus 1, which has the component power of the present embodiment, can recover C 4 explosives from baggage 25 at an average of 7.9%.
- FIG. 11 shows the results of inspection of actual baggage 25 with TNT explosive particles attached.
- the vertical axis represents ion intensity in arbitrary units, and the horizontal axis represents time in seconds.
- a clear signal indicating that a TNT explosive component has been detected can be obtained. From this result, by using the deposit inspection apparatus 1 of the first embodiment, the TNT explosive particles are peeled off from the actual baggage 25 to which the TNT explosive particles have adhered and collected by the collection filter 52, It was proved that it was vaporized by the heating unit 18 and that the mass analysis unit 21 could detect TNT explosive components.
- the deposit inspection apparatus 1 performs an inspection to determine whether or not the sample material attached to the baggage 25 contains a dangerous substance such as an explosive without contacting the baggage 25.
- a dangerous substance such as an explosive
- the inspection can be automatically performed under certain conditions, the baggage 25 is not damaged or contaminated, and the inspection can be quickly performed without requiring a skilled inspector.
- the tip of the nozzle 36 is attached to the baggage 25 by scanning the periphery of the baggage 25 at a distance of 5 cm from the virtual outline of the baggage 25 calculated by the baggage size calculation unit 13. Since the air jet with a wind speed of 40m / s to 130m / s, which is effective for peeling the sample material, can be sprayed onto the surface of the baggage 25, the sample material can be peeled effectively from the baggage 25.
- the collection filter 52 that has collected the sample material is automatically pulled out of the sampling chamber 27 by the collection filter conveyance drive unit 17 and inserted into the heating unit 18 coupled to the mass analysis unit 21. It can be transported to the heating unit 18 from the sampling chamber 27 where there is no contamination of the collection filter 52 or human contamination during the process.
- Fig. 12 shows the sampling chamber 27 after the C4 explosive is detected in the deposit inspection apparatus 1 of the first embodiment. It shows the result of inspecting the presence of explosives by putting the collection filter used when spraying into the heating section 18.
- the vertical axis indicates the ion intensity in arbitrary units, and the horizontal axis indicates the time in seconds.
- the sample material force collected from the sampling chamber 27 after clearly detecting the C4 explosive also gives a signal indicating the C4 explosive (dangerous substance)!
- the inventors found that explosive particles (dangerous substances) remained in the sampling chamber 27 where dangerous substances such as explosives were once collected.
- dangerous substances such as explosives were once collected.
- the dangerous substance adhering to the inner wall of the sampling chamber 27 is peeled off and collected by the collecting filter 52. It can be considered.
- such a dangerous sample substance actually adheres to the sample substance adhering to the baggage 25.
- the adhering substance inspection unit 2 detects the dangerous substance. Become. Therefore, the self-cleaning function can be said to be an indispensable function in the deposit inspection apparatus 1 for the baggage 25.
- the sampling chamber 27 can be cleaned automatically and without human intervention without the need for a device, and the cleaning effect can be quantitatively inspected.
- the self-cleaning by the deposit inspection apparatus 1 of the first embodiment is performed according to the following procedure.
- the data processing unit 23 determines that the explosive component has been detected from the test results, this fact is displayed on the operation panel 11 to inform the inspector. Thereafter, the deposit inspection apparatus 1 waits for an instruction to start self tallying.
- the central control unit 7 sends the collection unit controller 10, the transport unit controller 9, and the inspection unit controller 8 for the self-cleaning process. Give instructions.
- the normal inspection process is stopped, and the self-tarling process determined in advance is started.
- the self-cleaning process is performed by the following processes.
- the intake section 16 is driven to suck in the sampling chamber 27 and the compressed gas generation section 15 is driven.
- the nozzle 36a arranged in the sampling chamber 27 is rotated by the cylindrical cylinder 37 so that the nozzle drive unit 14 faces the inner wall of the sampling chamber 27, and the nozzle 36b starts self-cleaning stored in advance.
- the arm 39 (39a, 39b) is driven by the nozzle drive unit 14 so as to move to the position.
- nozzle 36 (36a, 36b) After the movement of the nozzle 36 (36a, 36b) is completed, an air valve (not shown) is opened to supply compressed gas to the nozzle 36, and an air jet is injected onto the inner wall of the sampling chamber 27. Nozzle 36 (36a, 36b), and the surface of each other's arm 39 (39a, 39b) are alternately jetted.
- the distance between the tip of the nozzle 36 and the inner wall of the sampling chamber 27 is 9 cm or less at which the air jet with a wind speed of 40 m / s or more that can effectively peel off the explosive fine particles described above can be injected.
- the surface of the arm 39 (39a, 39b) is scanned.
- the components detected from the collection filter 52 are compared with the components of dangerous substances stored in advance. As a result of the comparison, if the adhering substance inspection unit 2 detects an explosive signal and determines that it is a low level, the normal inspection process is resumed. If it is determined that the explosive signal is detected, self-cleaning is performed again. Start.
- FIG. 13 shows the deposit filter 52 used when the inner wall of the sampling chamber 27 after detecting the C4 explosive is self-cleaned by the above-described method in the deposit inspection apparatus 1 of the first embodiment. Shows the results.
- Fig. 13 shows the test results after the self-cleaning process described above was repeated eight times. As shown in FIG. 13, since there was no change in the signal indicating the C4 explosive, it was proved that the sampling chamber 27 was cleaned by the self-cleaning method of this embodiment.
- the self-cleaning means according to the present embodiment described above, and even when an explosive is detected from the baggage, the inside of the sampling chamber 27 is cleaned if the contamination inside the sampling chamber 27 is detected by a person. It can be done automatically and in a short time without damaging the components. In addition, by measuring the cleanliness of the sampling chamber 27 after cleaning with the deposit inspection section 2, the effect of cleaning can be quantitatively confirmed, so false detection is also performed after detection of dangerous substances. There is nothing. Note that the self-cleaning effect need not be measured for each self-cleaning. By measuring the self-cleaning effect when a predetermined number of self-tilings have been completed, the time required for self-tiling can be further shortened.
- the collection filter 52 that has detected the dangerous substance is inserted into the heating unit 18 again, and heated while the air jet is being injected into the sampling chamber 27 described above, so that the component derived from the dangerous substance is applied to the collection filter. Even if it remains, it can be removed, which is effective.
- a deposit inspection apparatus capable of performing a continuous inspection without replacing the collection filter 52 after each inspection using the configuration of the following deposit inspection apparatus 1 of the present invention will be described. To do. It can be imagined that a large number of baggage 25 is inspected in one day, although the deposit inspection of baggage 25 performed in one day depends on the inspection place. [0083] In general, the baggage 25 is attached with metal that does not evaporate even when heated, or solid matter such as earth and sand. When such a baggage 25 is sprayed with an air jet in the sampling chamber 27 of the deposit inspection apparatus 1 according to the first embodiment of the present invention, the solid matter that does not evaporate also peels off from the baggage 25 and is collected into the collection filter 52. It is collected. As the continuous inspection progresses, the solid matter accumulates on the collection filter 52, and the detection sensitivity of the deposit inspection unit 2 decreases due to clogging of the collection filter 52 and the gas generated from them. .
- the hand unit 53 is interposed between the hand unit 53 that holds the collection filter 52 and the transport arm 54 that holds the hand unit 53.
- the collection filter transport drive unit 17 with a rotation function that rotates the plate 180 degrees (reversing the front and back), the above-mentioned problems occur without replacing the collection filter 52 for each inspection. It is possible to perform continuous inspection without any problems.
- FIG. 14 is a diagram including a partial cross section for explaining the collection filter transport unit 4 that enables continuous inspection in the deposit inspection apparatus 1 of the present invention.
- each part other than the collection filter 52, the hand part 53, and a part of the transfer arm 54 holding the hand part 53 is omitted.
- FIG. 14 (a) is a cross section passing through the center of the boss 45, and is a top view seen from the positive direction of the Z axis.
- FIG. 14 (b) is a partial sectional view passing through the center of the collection filter 52, and is a side view seen from the positive direction of the Y axis.
- the hand unit 53 is held on the transfer arm 54 via a rotatable bearing 71 and is connected to a drive source 72 that rotates the hand unit 53.
- the drive source 72 is controlled by the transport controller 9 (see FIG. 1).
- the collection filter 52 uses a non-penetrating stainless steel filter as described above.
- the collection filter 52 is taken out from the pipe 41 by the procedure described in the first embodiment, and inserted into the heating unit 18 to inspect whether or not the sample substance contains a dangerous substance. After the inspection is completed and the collection filter 52 is taken out from the heating unit 18, the drive source 72 is driven, and the node unit 53 holding the collection filter 52 is rotated 180 degrees to be reversed. The collecting filter 52 is inserted into the pipe 41 of the sampling chamber 27 as it is. [0088] By turning the hand part 53 upside down during the transportation process, the relatively large solid matter remaining on the surface of the collection filter 52 falls due to gravity or vibration during the transportation process. Particulates remaining without falling are also collected by the intake filter 16 after the collection filter 52 is inserted into the piping 41 of the sampling chamber 27 and the intake section 16 starts to inhale the gas in the sampling chamber 27. Is peeled off.
- the collection filter 52 is reversed at each inspection to prevent clogging of the collection filter 52. Therefore, it is possible to provide the deposit inspection apparatus 1 in which the detection sensitivity of the deposit inspection unit 2 does not decrease even if the collection filter 52 is continuously used without being replaced.
- the baggage 25 is always inspected with a clean unused collection filter 52.
- attachment inspection apparatus 1 which can be provided can be provided.
- the collection filter transport unit 4 in which the hand unit 53 described in FIG. 14 can rotate 180 degrees and the deposit inspection apparatus 1 equipped with the collection filter exchange station for example, the number of inspections is increased every 100 times.
- An inspection method for exchanging the collection filter 52 is also possible. In other words, in the same procedure as the self-cleaning described above, the cleanness of the collection filter 52 that has passed the predetermined number of inspections is confirmed by the deposit inspection unit 2, and the data generated from the collection filter 52 is detected by the data processing unit 23. If it is determined that the detection accuracy is low, insert the collection filter 52 into the cassette that stores the used collection filter 52, and then insert the collection filter 52 that is not used.
- the unused collection filter 52 is taken out and inserted into the pipe 41 to prepare for the next inspection.
- the deposit inspection device 1 described above, the number of collection filters 52 used in one day can be reduced, and the cleanliness of the collection filter 52 is constantly monitored, so that it is more reliable. Therefore, the highly reliable deposit inspection apparatus 1 can be provided.
- FIG. 15 is a flowchart showing the operation steps of each part in the deposit inspection apparatus 1 according to the first embodiment of the present invention described above.
- Baggage 25 with sample material attached is delivered to sampling chamber 27 by baggage delivery unit 3 (Sl l). Then, the size and shape of the baggage 25 are first recognized by the baggage recognition unit 12 and the baggage size calculation unit 13 (S12). Next, the suction unit 16 is driven to suck the gas in the sampling chamber 27 of the deposit collecting unit 5 (S13), and then the nozzle 36 is moved so as to scan the surface of the baggage 25 (S14). A jet is jetted onto the surface (S15). After the air jet is continued for a predetermined time or until the entire surface of the baggage 25 is scanned (S16), the air jet is stopped (S17). Thereafter, the intake section 16 is stopped and the suction of the gas in the sampling chamber 27 is also stopped (S18).
- the nozzle 36 moves to the retracted position (S19), and the baggage 25 is sent out of the sampling chamber 27 by the baggage delivery unit 3 (S20).
- the collection filter 52 is taken out from the pipe 41 of the deposit collection section 5 by the collection filter transport drive section 17, and a new collection filter 52 is inserted into the pipe 41 (S21).
- the collection filter 41 taken out from the pipe 41 is inserted into the heating unit 18 (S22).
- the collection filter 52 inserted in the heating unit 18 is heated, and the sample material collected in the collection filter 52 is also heated and vaporized to generate a sample gas (S23).
- the collection filter 52 is heated for a predetermined time, it is taken out from the heating unit 18 by the collection filter transport driving unit 17.
- the sample gas is conveyed to the ion source unit 19 and ionized (S 24), and then sent to the mass analysis unit 21 for mass analysis (S 25).
- the data processing section 23 identifies the presence and type of hazardous substances. If no dangerous substance is detected (S26: No danger), the result is output to the operation panel 11 (S27), the next measurement starts (jumps to S11), and if the dangerous substance is detected ( (S26: Dangerous), that is output to the operation panel 11 to inform the inspector that a dangerous substance has been detected (S27), and self-cleaning Wait for instructions on whether to perform the process.
- Step S20 jumps).
- the air jet injection (S15) process is different from the normal inspection process described above in that the nozzle 36 is injected toward the inner wall of the sampling chamber 27 or the arm 39.
- the self-cleaning (S28) process is repeated until it is determined that there is no danger in step S26. If it is determined in step S26 that there is no danger, the next baggage 25 is inspected (Sl l).
- FIG. 16 is a perspective view showing the appearance of the deposit inspection apparatus 1 ′ according to the second embodiment of the present invention.
- FIG. 17 is a side view and a top view for explaining the deposit inspection apparatus according to the second embodiment of the present invention.
- FIG. 17 (a) shows a front view including a partial cross section inside the sampling chamber 27 in the deposit collection part 5 ′ of the deposit inspection apparatus 1 ′ of the second embodiment of the present invention! /
- the cross section is a cross section passing through the end face of the baggage entrance 30 of the sampling chamber 27, and the front view is a view seen from the negative direction of the X axis, and the nozzle 75 (75a, Description of each part other than 75b, 75c, 75d) and cylinder 76 (76a, 76b, 76c, 76d) is omitted.
- FIG. 17 (b) shows a side view including a partial cross section inside the sampling chamber 27 in the deposit collection part 5 ′ of the deposit inspection apparatus 1 ′ of the second embodiment of the present invention.
- the cross section is a cross section that passes through the center of the sampling chamber 27 and is parallel to the baggage conveyance direction of the sampling chamber 27.
- the side view is a side view seen from the negative direction of the Y-axis, and the description of each part other than the nozzle 75 is omitted.
- the configuration of each part other than the nozzle 75 provided in the deposit collection part 5 ′ is the same as that of the deposit inspection apparatus 1 of the first embodiment. Description is omitted.
- the baggage recognizing unit 12 for detecting the size of the baggage 25 is provided in a gate shape on the baggage transport track in front of the entrance 30 of the sampling chamber 27. Since the configuration and operation of the baggage recognition unit 12 are the same as those in the first embodiment, description thereof is omitted. Baggage recognition unit 12 After detecting the size of the baggage 25 and calculating the virtual outline in the deposit collecting part 5, the baggage 25 reaches the entrance 30 of the sampling chamber.
- the nozzle 75 of the deposit inspection apparatus 1 ′ of the second embodiment includes a nozzle 75a for injecting an air jet onto the bottom surface of the baggage 25, and a baggage 25.
- a nozzle 75b for jetting air jets on the top surface nozzles 75c and 75c for jetting air jets on the side of the baggage 25, and a nozzle 75d for jetting air jets on the inner wall of the sampling chamber 27.
- the nozzle 75a is provided in a cylindrical cylinder 76a that is rotatable about the central axis, which is longer than 40 cm, which is the width of the inspectable baggage 25, 3 cm below the transport track of the tray 26 at the entrance 30.
- 20 nozzles with a diameter of 2 mm are opened at an interval of 3 cm, inclined 30 degrees with respect to the bottom surface of the force tray 26 and directed in the conveying direction.
- Nozzle 75b is a pair of cylinders that can move downward at the position of entrance 30 higher than the height of baggage 25, and that is longer than 40cm, which is the width of baggage 25, can rotate about the central axis.
- the cylindrical tube 76b is provided.
- 20 nozzles with a diameter of 2 mm are opened at an interval of 3 cm, inclined 30 degrees with respect to the upper surface of the force tray 26, and directed toward the conveying direction.
- the nozzle 75c is a cylindrical shape that can be moved sideways in both sides of the sampling chamber 27 and that can rotate about a central axis that is longer than 50cm, which is the height of the powerful baggage 25. It is provided on the cylinder 76c.
- the cylinder 76c has a nozzle with a diameter of 2mm, 75c, and has 25 openings at 3cm intervals inclined 30 degrees with respect to the plane parallel to the transport path of the tray 26 in the transport direction.
- the nozzle 75d is provided in a cylindrical tube 76d that can move downward from a position higher than the height of the baggage 25 and is 3 cm away from the inner wall of the sampling chamber 27. . Thirty nozzles 75d having a diameter of 2 mm are opened in the cylinder 76d at an interval of 3 cm with an inclination of 30 degrees with respect to the inner wall of the sampling chamber 27 and directed downward.
- the time required for baggage 25 to reach entrance 30 is also controlled by the time at which the signal of baggage recognition unit 12 is detected, the baggage transport speed, and the distance between the location of baggage recognition unit 12 and the location of entrance 30. Calculate with vessel 10. Of course, that baggage 25 will reach entrance 30 You can have a sensor to detect!
- the nozzle 75b is moved to a position 5 cm away from the virtual height calculated by the baggage size calculation unit 13.
- the nozzle 75c is moved to a position 5 cm away from the virtual width calculated by the baggage size calculator 13.
- the intake section 16 for sucking the inside of the sampling chamber 27 and the compressed gas generation section 15 are driven.
- the air valve (not shown) connecting the nozzle 75 (75a, 75b, 75c) and the compressed gas generator 15 is opened, and the nozzle 75 (75a, 75b, 75c) is supplied with compressed gas.
- the nozzles 75b and 75c are moved in the respective movable directions by the nozzle drive unit 14. Control movement.
- the air valve (not shown) is closed and the injection of the air jet is stopped. Thereafter, the cylindrical cylinder 76 a provided with the nozzle 75 a rotates so that the nozzle 75 a has an inclination of 30 degrees with respect to the inner wall of the sampling chamber 27. After rotation, the air valve (not shown) connecting nozzles 75a and 75d and compressed gas generator 15 is opened, compressed gas is supplied to nozzles 75a and 75d, and the air jet is directed toward the inner wall of sampling chamber 27 from there. Spray. The nozzle 75d descends to the lower surface of the sampling chamber 27 while spraying air jet on the inner wall of the sampling chamber 27.
- the air valve (not shown) is closed and the nozzle 75d is raised to the retracted position.
- the baggage 25 is transported by the transport tray 26.
- the collection filter 52 is taken out from the pipe 41, and the collection filter 52 is heated and vaporized in the collection filter transport drive unit 17 and the heating unit 18 to be inserted into the heating unit 18 as shown in FIG. Since the means for mass spectrometry and the means for identifying dangerous substances from the results of mass spectrometry are the same as those in the first embodiment, description thereof will be omitted.
- FIG. 18 shows the result of inspecting the baggage 25 to which the C4 explosive particles are adhered, using the configuration of the deposit inspection apparatus of the second embodiment.
- the vertical axis represents ion intensity in arbitrary units, and the horizontal axis represents time in seconds.
- the C4 explosive A signal with a clear component can be obtained. From this result, by using the second embodiment of the deposit inspection device, the C4 explosive particles were separated from the actual baggage 25 to which the C4 explosive particles adhered by using an air jet, collected by the collection filter 52, and heated. Vaporization in part 18 and data processing part 23 proved that C4 explosive components can be detected. From the experiment, it was confirmed that the deposit detection device having the configuration of the present embodiment can collect C4 explosives from baggage 25 at an average of 4%.
- the attached matter inspection apparatus 1 'of the second embodiment it is possible to inspect the presence or absence of explosive particles in the baggage 25 without stopping the baggage 25 in the sampling chamber 27, and thus the baggage with high inspection throughput. It is possible to provide a deposit inspection apparatus 1 ′ that inspects the baggage 25 under a certain condition without contact with the baggage 25 without causing damage or contamination of the bag 25 and without requiring a skilled inspector.
- a baggage such as an X-ray transmission apparatus, which is a well-known technique, is placed in the sampling chamber 27. It is also one of the features that an inspection device that can see through the inside can be provided. For this reason, the deposit inspection apparatus according to the present invention and an internal inspection apparatus such as a commonly used X-ray transmission apparatus can be used to realize the deposit inspection apparatus capable of inspecting baggage, which is more reliable and reliable.
- a baggage deposit inspection apparatus can be provided.
- the deposit inspection apparatus 1 of the first embodiment and the deposit inspection apparatus 1 of the second embodiment.
- 'I a force that uses a light detector consisting of a projector 32 and a light receiver 33 as the baggage recognition unit 12
- the lateral and vertical images of baggage 25 are taken with multiple cameras, A means for detecting the size of the baggage from the image or a means for detecting the size of the baggage from the baggage image obtained by the X-ray transmission device described above may be used.
- FIG. 19 shows a side view and a top view for explaining the collector 5 ′′ of the third embodiment of the deposit inspection apparatus 1 ′′ assuming a human body as the inspection object.
- FIG. 19 (a) shows a third embodiment of the present invention.
- FIG. 6 is a top view of the sampling chamber 78 in the deposit collection part 5 ”of the deposit inspection apparatus 1” in the state.
- FIG. 19 (b) shows a side view including a partial cross section in the sampling chamber 78 in the deposit collection part 5 ′′ of the deposit inspection apparatus 1 ′′ according to the third embodiment of the present invention.
- the cross section is a cross section passing through the center of the sampling chamber 78.
- the deposit inspection apparatus 1 "of the third embodiment is an apparatus for inspecting the lower arm portion (inspection target) of a human body.
- the deposit collecting part 5 "of the third embodiment includes a sampling chamber 78 for actually inserting an arm, a nozzle 79 for injecting an air jet to the arm, and a detector 80 (80a, 80b) for detecting insertion of the arm.
- a compressed gas generating section 15 for supplying compressed gas to the nozzles 79, 79... It comprises an intake section 16 (see FIG. 1) for sucking in air via a collecting filter 82, a power supply section 6 (see FIG. 1) for driving them, and a control section (not shown) for controlling them.
- the parts other than the nozzle 79 and the detector 80 that detects the insertion of the arm are housed in a housing 86.
- the arm insertion port 87 of this embodiment is provided above the sampling chamber 78.
- the subject inserts both arms through the arm insertion opening 87 until the arm is deeper than the wrist.
- the detector 80 that detects the insertion of the arm provided in the arm insertion port 87 of the sampling chamber 78 notifies the control unit that the arm has been detected.
- the detector 80 includes a light projector 80a that projects light and a light receiver 80b that receives light from the light projector 80a.
- the light receiver 80b outputs a signal when it does not receive light from the light projector 80a.
- the control unit drives the intake unit 16 (see FIG. 1) and then drives the intake unit 16 to drive the compressed gas generation unit 15 (see FIG. 1) after several seconds.
- the reason why the time of several seconds is provided until the driving of the compressed gas generation unit 15 is started is that it takes time to insert the arm.
- a turbo fan is used as the compressed gas generation unit 15.
- the nozzles 79, 79 in this embodiment are 25 nozzles with a diameter of 2mm, 25 on one side, so that air jets can be injected from both sides of the back of the hand and the palm of the hand to the heel entrance 87 of the arm of the sampling chamber 78. , 79 ⁇ are arranged at 2 cm intervals on both sides. The force between the nozzles 79, 79 ...
- the nozzles 79, 79, and the arm of the subject are arranged so that an air jet having a wind speed of 40 m / s to 130 m / s is injected at an inclination of about 30 degrees with respect to the surface of the arm.
- the size of the brachial entrance 87 of the sampling chamber 78 is designed so that the interval of the sampling chamber 78 ranges from 3 cm to 9 cm.
- the control unit stops the compressed gas generation unit 15 and then stops the intake unit 16.
- a collection filter 82 is inserted in the lower part of the sampling chamber 78, and the sample substance is collected by the collection filter 82.
- the configuration of the collection filter 82, the collection filter transport drive unit 17, and the deposit inspection unit 2 are configured in the same manner as in the first embodiment.
- the collection filter 82 is taken out of the sampling chamber 78,
- the procedure for inserting the sample into the heating unit 18, vaporizing, ionizing, mass-analyzing the sample material, and inspecting the presence or type of the hazardous substance in the data processing unit 23 is the same as in the first embodiment. Is omitted.
- Fig. 20 shows the result of inspecting the hand actually touching the C4 explosive with the deposit inspection apparatus 1 "of the third embodiment.
- the vertical axis indicates the signal intensity in arbitrary units.
- the horizontal axis indicates the time in seconds, and a clear signal can be obtained at the detection position of the C4 explosive component as shown in Fig. 20. From this result, By using the third embodiment, from the hand touching the C4 explosive, the C4 explosive particles are separated by an air jet and collected by the collection filter 82, vaporized by the heating unit 18, and the C4 explosive is obtained by the mass analyzing unit 21. It was demonstrated that the components can be detected.
- the range of the inspection object is expanded by changing the shape of the heel entrance 87 of the 1S sampling chamber 78 in which the lower arm portion of the human body is the inspection object. For example, inspecting the shoe portion of the subject or inserting the insertion port into the postal mail By using the same size as the object insertion port, it is possible to inspect postal items and boarding passes as inspection objects.
- the whole body can be inspected as an object to be inspected by using the sampling chamber 78 that scans the nozzles 79, 79 ... from the head of the human body to the toes. Is possible.
- the deposit inspection apparatus 1, 1 ', 1 transports the collection filters 52, 82 to the collection.
- the filter is transported using the filter transport drive unit 17, the sample substance can be removed from the baggage 25, which is the object of the present invention, without using the collection filter transport drive unit 17 or manually transported by an inspector.
- the purpose of peeling, collecting and inspecting the air jet can also be achieved, and the jet inspection of the first, second and third embodiments described above also applies to the jet of air jet.
- the force that is automatically jetting air jets using the nozzle drive unit 14 is manually applied to the surface of the object to be inspected by the wind speed from 40m / s to 130m / s. It is also possible to scan the surface of the inspection object so that the air jet can be jetted from baggage 25. The sample material was peeled, collected, any change is not in the inspection can be effectively. In this case, since the baggage recognizing unit 12 is not required, a cheaper and simpler baggage deposit inspection apparatus can be provided.
- the collection filter 52, 82 is used, but is not limited to the collection filters 52 and 82.
- an impactor which is a well-known technique, is installed between the sampling chamber 27 and the intake section 16, and the sample material of the impactor is changed.
- the deposit base is heated by using the collection filter transport drive unit 17 of the first embodiment, the second embodiment, and the third embodiment described above, or manually by an inspector. Even when transported to the section 18, there is no change in the effect of separating, collecting, and inspecting the adhering fine particles from the baggage 25, which is the object of the present invention.
- the mass analysis means is used as the deposit inspection section 2.
- mass spectrometric means it is not limited to mass spectrometric means, but may be anything that can analyze the component of the sample substance adhering to the test object, for example, vapor of the sample substance vaporized by the heating unit 18.
- a gas chromatograph By separating with a gas chromatograph and reacting with a luminescent reagent to detect luminescence
- the present invention can also be applied to a well-known chemiluminescent deposit inspection apparatus for identifying unknown substances.
- This vapor is ionized with a radioactive isotope inside the ion source section 19 and then introduced into the drift tube to detect the mobility of the ions, so that a well-known ion mobility method can be used to identify unknown substances.
- FIG. 1 is a block diagram showing a main configuration of a deposit inspection apparatus according to a first embodiment of the present invention.
- FIG. 2 is a perspective view showing the deposit inspection apparatus according to the first embodiment of the present invention.
- FIG. 3 is a front view for explaining a baggage recognition unit of the deposit inspection apparatus according to the first embodiment of the present invention.
- FIG. 4 (a) is a partially extracted side view for explaining the baggage size detection process of the deposit inspection apparatus of the first embodiment of the present invention, and (b) is the first embodiment of the present invention. It is a figure explaining the change of the signal of the baggage size calculating part of the adhering matter inspection apparatus.
- FIG. 5 (a) is a partially extracted front view illustrating a nozzle driving unit of the deposit inspection apparatus according to the first embodiment of the present invention, and (b) is a side view of the same.
- FIG. 6 is a diagram for explaining the relationship between the amount of C4 explosive recovered and the air jet velocity using the configuration of the deposit inspection apparatus of the first embodiment of the present invention.
- FIG. 7 is a top view for explaining a collection filter conveyance process ((a)-(e)) by a collection filter conveyance drive unit of the deposit inspection apparatus according to the first embodiment of the present invention.
- FIG. 8 (a) and (c) are top views including a partial cross section for explaining a collection filter holding method by the collection filter holding means of the deposit inspection apparatus of the first embodiment of the present invention. (B) and (d) are the same side views.
- FIG. 9 (a) is a partially extracted top view including a partial cross section for explaining the state of the heating unit before the collection filter is inserted in the deposit inspection apparatus of the first embodiment of the present invention.
- (B) is the same top view explaining the state after a collection filter is inserted.
- FIG. 10 is a graph showing the change over time of the signal intensity of the mass-to-charge ratio of the C4 explosive component detected by the baggage bag with the C4 explosive particles adhering in the deposit inspection apparatus of the first embodiment of the present invention. It is.
- FIG. 11 is a diagram showing the time change of the signal intensity of the mass-to-charge ratio of the TNT explosive component detected from the baggage with the TNT explosive particles adhered in the deposit inspection apparatus according to the first embodiment of the present invention.
- FIG. 12 In the deposit inspection apparatus according to the first embodiment of the present invention, the collected filter Taka which detected the sample material by injecting an air jet onto the inner wall of the sampling chamber after detecting the C4 explosive component was detected. It is a figure which shows the time change of the signal strength of the mass charge ratio of the C4 explosive component.
- FIG. 13 In the deposit inspection apparatus according to the first embodiment of the present invention, an air jet is injected into the sampling chamber wall after self-cleaning the inner wall of the sampling chamber after detecting the C4 explosive component, and the sample material is removed. It is a figure which shows the time change of the signal strength of the mass charge ratio of the C4 explosive component detected from the collected collection filter.
- FIG. 14 (a) is a diagram illustrating a collecting filter transporting means for explaining a collecting filter transporting means to which a rotating function for reversing the hand part is added in the deposit inspection apparatus according to the first embodiment of the present invention. It is a top view containing a partial cross section, (b) is the side view.
- FIG. 15 is a flowchart for explaining the entire normal inspection process and self-tiling process of each part of the deposit inspection apparatus of the present invention.
- FIG. 16 A perspective view showing a deposit inspection apparatus according to a second embodiment of the present invention.
- FIG. 17 (a) is a front view including a partial cross section for explaining the collection part of the deposit inspection apparatus of the second embodiment of the present invention, and (b) is a side view thereof.
- FIG. 18 is a diagram showing the time variation of the signal intensity of the mass-to-charge ratio of the C4 explosive component detected by the baggage bag with the C4 explosive particles adhering in the adhering matter inspection apparatus of the second embodiment of the present invention.
- FIG. 19 (a) is a top view including a partial cross section for explaining the collection part of the deposit inspection apparatus of the third embodiment of the present invention
- FIG. 19 (b) is a front view thereof.
- FIG. 20 is a diagram showing the change over time of the signal intensity of the mass-to-charge ratio of the C4 explosive component detected from the hand touching the C4 explosive particle in the deposit inspection apparatus of the third embodiment of the present invention.
- Explanation of symbols 1, 1, 1 "deposit inspection device deposit inspection section (inspection section) baggage delivery section (delivery section) collection filter transport section (transport section), 5 ', 5" deposit collection section (collection section) 1 Control panel
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Abstract
Description
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US11/908,516 US8217339B2 (en) | 2005-03-14 | 2005-03-14 | Adhering matter inspection equipment and method for inspecting adhering method |
PCT/JP2005/004461 WO2006097990A1 (ja) | 2005-03-14 | 2005-03-14 | 付着物検査装置及び付着物検査方法 |
JP2007507960A JP4568327B2 (ja) | 2005-03-14 | 2005-03-14 | 付着物検査装置及び付着物検査方法 |
US13/189,812 US8586916B2 (en) | 2005-03-14 | 2011-07-25 | Adhering matter inspection equipment and method for inspecting adhering matter |
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PCT/JP2005/004461 WO2006097990A1 (ja) | 2005-03-14 | 2005-03-14 | 付着物検査装置及び付着物検査方法 |
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US10/908,516 A-371-Of-International US20060256584A1 (en) | 2005-05-16 | 2005-05-16 | Apparatus for illuminating objects and mounting works of art |
US13/189,812 Continuation US8586916B2 (en) | 2005-03-14 | 2011-07-25 | Adhering matter inspection equipment and method for inspecting adhering matter |
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US8586916B2 (en) | 2013-11-19 |
US20110278469A1 (en) | 2011-11-17 |
US8217339B2 (en) | 2012-07-10 |
US20090200458A1 (en) | 2009-08-13 |
JPWO2006097990A1 (ja) | 2008-08-21 |
JP4568327B2 (ja) | 2010-10-27 |
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