JP4928659B2 - Security system and security check method - Google Patents

Description

  The present invention relates to a security system and a security check method. The present invention particularly relates to a security system and a security check method for inspecting a liquid container brought into a specific area such as an airport.

There is a method for detecting a flammable liquid by using a dielectric constant for inspecting a liquid brought into an airplane (see, for example, Patent Document 1). In addition, there is a method that allows liquids such as alcoholic beverages sold at duty-free shops to be brought back into the plane at the time of transit by placing the receipt together with a receipt in a special plastic bag.
International Publication No. 2005/008230 Pamphlet

  However, in the method of Patent Document 1, it is determined whether or not the liquid is a dangerous substance by identifying the dielectric constant using the dielectric constant. However, it is difficult to identify the liquid from the dielectric constant alone. Even if it can be identified, it takes time. Moreover, in the system using a plastic bag, for example, a situation where an unused plastic bag is stolen and used is expected, and the certainty is low.

  In order to solve the above-described problem, in the first embodiment of the present invention, a physical quantity measuring unit that measures a physical quantity of a liquid container that contains a liquid, and information indicating the physical quantity measured by the physical quantity measuring unit are provided. A container information output device installed in a store, a physical quantity measuring unit for measuring the physical quantity of the liquid container, and affixed to the liquid container An information reading unit that reads the container information from the label, and whether the physical quantity of the liquid container measured by the physical quantity measurement unit matches the physical quantity indicated by the container information read by the information reading unit There is provided a security system that includes a container information judging unit that judges and outputs the information and has a container information inspecting device installed in a baggage inspection place. In this case, the physical quantity measurement unit of the container information output device and the container information determination unit may include a mass measurement unit that measures the mass of the liquid container as the physical quantity.

  In the security system, the information output unit encrypts the container information and prints it on the label, and the information reading unit decrypts the container information read from the label, thereby indicating a physical quantity indicated by the container information. May be obtained.

  The security system further includes a container information storage unit that stores information indicating a physical quantity of the liquid container in association with liquid container identification information for identifying the liquid container, and the information output unit includes the container information as the container information. Liquid container identification information is further printed on the label, and the container information determination unit is configured to determine a physical quantity of the liquid container measured by the physical quantity measurement unit and a physical quantity indicated by the container information read by the information reading unit. When they match, the information indicating the physical quantity is written in the container information storage unit in association with the liquid container identification information read by the information reading unit, and the container information determination unit receives the container information from the information reading unit. Is newly read in the container information storage unit in association with the liquid container identification information included in the container information. Reads the information indicating the paid physical quantity, a physical quantity as a physical quantity measured by the physical quantity measuring section may further determine whether the match shown in the read information. In this case, a plurality of the container information inspection devices may share one container information storage unit via a network.

  In the security system, the physical quantity measurement unit of the container information output device further includes a dielectric constant measurement unit that measures a dielectric constant of the liquid container, and the information output unit is further measured by the dielectric constant measurement unit. Printed on the label, the physical quantity measurement unit of the container information inspection apparatus further includes a dielectric constant measurement unit that measures the dielectric constant of the liquid container, and the container information determination unit includes: Further, it may be determined whether or not the dielectric constant of the liquid container measured by the dielectric constant measuring unit and the dielectric constant indicated by the container information read by the information reading unit match. Good.

  The said security system WHEREIN: The said dielectric constant measurement part of the said container information output device and a container information inspection apparatus may measure a dielectric constant in multiple places along the height direction of the said liquid container.

  In the security system, the dielectric constant measurement unit of the container information output device and the container information inspection device may measure the dielectric constant at a plurality of locations by a sensor that moves relatively along the height direction of the liquid container. Good.

  In the security system, the physical quantity measurement unit of the container information output device further includes a thermal conductivity measurement unit that measures the thermal conductivity of the liquid container, and the information output unit further includes the thermal conductivity measurement. The information indicating the thermal conductivity measured by the unit is printed on the label, and the physical quantity measurement unit of the container information inspection apparatus further includes a thermal conductivity measurement unit that measures the thermal conductivity of the liquid container, The container information determination unit further determines whether or not the thermal conductivity of the liquid container measured by the thermal conductivity measurement unit matches the thermal conductivity indicated by the container information read by the information reading unit. Or may be output.

  The said security system WHEREIN: The said heat conductivity measurement part of the said container information output device and a container information test | inspection apparatus may measure heat conductivity in multiple places along the height direction of the said liquid container.

  In the above security system, the thermal conductivity measurement unit of the container information output device and the container information inspection device measures thermal conductivity at a plurality of locations by sensors that move relatively along the height direction of the liquid container. May be.

  In the security system, the container information output device may further include a cash register that records the sale and purchase of the liquid container.

  In the second embodiment of the present invention, the physical quantity measuring unit installed in the store is measured by the store-side physical quantity measuring step for measuring the physical quantity of the liquid container containing the liquid, and the store-side physical quantity measuring step. An information output step of printing container information including information indicating a physical quantity on a label and pasting it on the liquid container, and an inspection-side physical quantity measuring step of measuring the physical quantity of the liquid container by a physical quantity measuring unit installed in a baggage inspection place And an information reading step of reading the container information from the label affixed to the liquid container, a physical quantity of the liquid container measured by the inspection-side physical quantity measuring step, and the container information read by the information reading step A container information determining step for determining whether or not the physical quantity indicated by A method is provided.

  In the third aspect of the present invention, in the apparatus for measuring the dielectric constant of the liquid container containing the liquid, the dielectric constant is measured at a plurality of locations along the height direction of the liquid container. Moreover, in the 4th form of this invention, in the apparatus which measures the heat conductivity of the liquid container which accommodates the liquid, heat conductivity is measured in several places along the height direction of the said liquid container.

  In the fifth embodiment of the present invention, a mass measuring unit that measures the mass of the liquid container containing the liquid, a cash register that records the sale and purchase of the liquid container, and the mass measured by the mass measuring unit There is provided a container information output device comprising: an information output unit that prints and outputs container information including information to be displayed and a record of trading by the cash register on a label.

  The above summary of the invention does not enumerate all necessary features of the invention. In addition, a sub-combination of these feature groups can also be an invention.

  Hereinafter, the invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. In addition, not all the combinations of features described in the embodiments are essential for the solving means of the invention.

  FIG. 1 is a schematic diagram schematically illustrating a plurality of airports 10, 20, and 30 in which an airport security system 100 as an example of a security system according to the present embodiment is used. In the following description, it is assumed that a traveler transfers from an airport 10 in a departure country to an airport 20 in a transit country and travels by plane to an airport 30 in a destination country.

  A baggage inspection place 14 is provided at the departure gate 12 of the airport 10, and baggage brought into the cabin is inspected. In the airport 10, an area closer to the boarding gate than the departure gate 12 is called a clean area, and a duty-free shop 16 is arranged in the area. Similarly, at the airport 20, a baggage inspection place 22 is provided, and baggage brought into the cabin is inspected. In addition, the airport 30 enters the destination country by passing through the immigration office 32.

  Here, it is assumed that a traveler purchases a liquid container 110 such as alcoholic beverages and cosmetics at the duty-free shop 16 at the duty-free shop 16 of the airport 10 and brings it into the airport 30 via the airport 20. In this case, since the liquid container 110 is brought in from another country, the airport 20 in the transit country inspects the baggage inspection place 22 again. However, the liquid container 110 is often a souvenir or the like consumed in the destination country, and cannot be opened at the baggage inspection place 22. Further, it is difficult to determine whether or not the liquid is a dangerous substance without opening the liquid container 110, and even if it can be determined, it takes time. Therefore, in some cases, there are airports that uniformly confiscate liquid containers 110 brought from other countries, which is inconvenient for travelers. Hereinafter, the term “liquid container 110” means that the liquid contained therein is included, and the term “container body” means that the liquid container 110 does not contain liquid. The duty-free store 16 is an example of a store.

  Therefore, the airport security system 100 according to the present embodiment determines whether the liquid container 110 brought into the airport 20 is a genuine product purchased at the duty-free shop 16, and if it is a genuine product, brings it in. The purpose is to allow. The airport security system 100 includes a container information output device 200 installed in the duty-free shop 16 of the airport 10 and a container information inspection device 300 installed in the baggage inspection place 22 of the airport 20. The container information output device 200 measures a physical quantity such as the mass of the liquid container 110, and outputs a label 120 to be attached to the liquid container 110 including information on the physical quantity. The container information inspection apparatus 300 measures the physical quantity of the liquid container 110 and compares information on the label 120 attached to the liquid container 110 with the physical quantity of the liquid container 110 obtained by the measurement. Thereby, at the airport 20, it is determined whether the liquid container 110 is a genuine product purchased at the duty-free shop 16. If it is a genuine product, it is determined whether the product is a dangerous article, Carrying on board is permitted.

  FIG. 2 is a functional block diagram illustrating functions of the container information output device 200. As illustrated in FIG. 2, the container information output device 200 includes a mass measurement unit 210, a dielectric constant measurement unit 220, a thermal conductivity measurement unit 240, an information output unit 260, and a cash register 270. Note that FIG. 2 does not show a spatial arrangement, and the container information output device 200 is provided with areas for measuring mass, dielectric constant, and thermal conductivity, and corresponds to the area where the liquid container 110 is arranged. The mass, dielectric constant or thermal conductivity may be measured in the state. The mass measurement unit 210, the dielectric constant measurement unit 220, and the thermal conductivity measurement unit 240 are examples of physical quantity measurement units. Instead of or in addition to these, the physical quantity measuring unit may measure other physical quantities such as a transmission image by X irradiation.

  FIG. 3 is a flowchart showing the operation (S10) of the container information output apparatus 200. The operation of the container information output device 200 will be described with reference to FIG. 3 together with FIG.

  First, when a traveler purchases the liquid container 110 at the duty-free shop 16 of the airport 10, the cash register 270 obtains input of information used for buying and selling such as the amount of the liquid container 110 from the salesperson of the duty-free shop 16. Store (S100). In this case, the cash register 270 acquires the liquid container ID that identifies the liquid container 110 from the barcode attached to the liquid container 110. The liquid container ID may be an identification number of the product, for example, a JAN code. In addition to this, the cash register 270 acquires a passport number, a flight number, and a duty-free shop ID for identifying the duty-free shop 16 of a traveler who purchases the liquid container 110. Next, the dielectric constant measurement unit 220 measures the mass of the liquid container 110 (S110).

  Furthermore, the container information output device 200 determines whether an instruction to measure the dielectric constant of the liquid container 110 has been received from a salesperson of the duty-free shop 16 (S120). Here, when the container body of the liquid container 110 is a dielectric such as a plastic bottle or glass, it is preferable to input an instruction to measure the dielectric constant. When the container body is a conductor such as a metal can, Preferably does not input an instruction to measure the dielectric constant.

  In step S120, when an instruction to measure the dielectric constant of the liquid container 110 is received (S120: Yes), the dielectric constant measurement unit 220 measures the dielectric constant of the liquid container 110. Here, the dielectric constant measurement unit 220 includes a capacitor 222 disposed near the liquid container 110 and disposed outside the liquid container 110. When electric charge is accumulated in the capacitor 222, a leakage electric field is generated outside the capacitor 222. When the leakage electric field penetrates the liquid in the liquid container 110, the capacity of the capacitor 222 is determined according to the liquid. Therefore, the dielectric constant measurement unit 220 calculates the capacity of the capacitor 222 by measuring the charge accumulated when a known voltage is applied to the capacitor 222, and calculates the dielectric constant of the liquid container 110 based on the capacity. calculate. The dielectric constant measurement unit 220 measures the oscillation frequency of the oscillation circuit using an oscillation circuit whose oscillation frequency changes when the capacitance of the capacitor 222 changes, instead of measuring the electric charge. The dielectric constant of the container 110 may be calculated.

  Next, the information output unit 260 includes the information acquired by the cash register 270, information indicating the mass measured by the mass measuring unit 210, and information indicating the dielectric constant measured by the dielectric constant measuring unit 220. Obtained as container information, and encrypts the information (S140). In this case, the information output unit 260 may encrypt the container information into a predetermined format for printing on the label 120 such as a barcode or a QR code. After encrypting with the encryption method, it may be further encrypted into a predetermined format for printing on the label 120. In this case, the container information includes information indicating the mass and the dielectric constant, but the information indicating the thermal conductivity is NULL. The container information preferably includes the date and time of sale by the cash register 270.

  Further, the information output unit 260 outputs the container information encrypted in step S140 by printing it on the label 120 (S150), and the salesperson of the duty-free shop 16 attaches the label 120 to the liquid container 110 (S160). In this case, the information output unit 260 prints the container information in the predetermined format used in step S140. In the example shown in FIG. 2, the information output unit 260 prints the container information with the QR code 122. The label 120 is provided with an adhesive on the back side of the printing surface, and is attached to the liquid container 110. Here, it is preferable that the label 120 is subjected to an anti-replacement process. An example of the anti-paste process is providing a plurality of half cuts on the printing surface.

  The information output unit 260 may print information that can be read visually on the label 120. In the example shown in FIG. 2, alphabetic abbreviations indicating the airport 10 are printed. Thereby, the check of the liquid container 110 can be omitted for the domestic movement.

  When the instruction to measure the dielectric constant of the liquid container 110 is not received in step S120 (S120: No), the container information output device 200 measures the thermal conductivity of the liquid container 110 from the salesperson of the duty-free shop 16. It is determined whether or not an instruction to accept has been received (S170). Here, when the container body of the liquid container 110 has a high thermal conductivity, such as a metal can, it is preferable to input an instruction to measure the thermal conductivity. When the rate is low, it is preferable not to input an instruction to measure the thermal conductivity.

  In step S170, when an instruction to measure the thermal conductivity of the liquid container 110 is received (S170: Yes), the thermal conductivity measurement unit 240 measures the thermal conductivity of the liquid container 110 (S180). Here, the thermal conductivity measurement unit 240 includes a heat source 242 and a temperature sensor 252 that are adjacent to each other with a gap therebetween. When measuring the thermal conductivity of the airport security system 100, first, the temperature sensor 252 measures the temperature when the heat source 242 is not heated. Next, the temperature is measured by the temperature sensor 252 after a predetermined time from supplying power to the heat source 242 and heating it. Here, the amount of heat given to the container body is diffused at a speed corresponding to the thermal conductivity of the liquid in the container body. Therefore, the temperature difference is determined by the thermal conductivity of the liquid in the container body. Therefore, the thermal conductivity measuring unit 240 calculates the thermal conductivity based on these temperature differences. Following step S180, the container information output apparatus 200 proceeds to step S140. In this case, the cash register 270 includes information indicating the mass and thermal conductivity as the container information, but the information indicating the dielectric constant is NULL.

  In step S170, when the instruction to measure the thermal conductivity of the liquid container 110 is not received (S170: No), the container information output apparatus 200 proceeds to step S140. In this case, the container information includes information indicating the mass, but the information indicating the dielectric constant and the thermal conductivity is NULL.

  Thus, the operation (S10) of the container information output device 200 is completed. In steps S130 and S180, whether or not the liquid stored in liquid container 110 is a dangerous substance may be further determined based on the measured dielectric constant or thermal conductivity. In this case, when it is determined that the object is dangerous, it is preferably warned and printing of the label is stopped.

  FIG. 4 is a functional block diagram for explaining functions of the container information inspection apparatus 300. As shown in FIG. 4, the container information inspection apparatus 300 includes a mass measurement unit 310, a dielectric constant measurement unit 320, a thermal conductivity measurement unit 340, an information reading unit 360, a container information determination unit 370, a display unit 380, and container information storage. Part 400. Here, each of the mass measurement unit 310, the dielectric constant measurement unit 320, and the thermal conductivity measurement unit 340 is an example of a physical quantity measurement unit. Instead of or in addition to these, the physical quantity measuring unit may measure a physical quantity corresponding to another physical quantity measured by the container information output device 200.

  FIG. 5 shows an example of information stored in the container information storage unit 400. The container information storage unit 400 stores information indicating the mass of the liquid container 110 in association with the liquid container ID. The container information storage unit 400 may further store container information other than the writing date and time and the mass. In the example shown in FIG. 5, a duty-free shop ID is stored as container information other than mass.

  The container information storage unit 400 may be provided in each individual container information inspection apparatus 300, but may be shared by a plurality of container information inspection apparatuses 300. In this case, each container information inspection device 300 exchanges information with the container information storage unit 400 via the network. For example, the container information storage unit 400 may be shared by a plurality of container information inspection devices 300 in the same airport and a plurality of container information inspection devices 300 in the same country.

  FIG. 6 is a flowchart showing the operation (S20) of the container information inspection apparatus 300. The operation of the container information inspection apparatus 300 will be described using FIG. 6 together with FIGS.

  First, when the liquid container 110 is brought into the baggage inspection place 22 of the airport 20, the information reading unit 360 reads the container information from the QR code 122 of the label 120 attached to the liquid container 110 (S200). Furthermore, the information reading unit 360 acquires information indicating the mass included in the container information by decoding the read information (S202). Next, the mass measuring unit 310 measures the mass of the liquid container 110 (S210). Note that the information reading unit 360 compares the sales date and time included in the information acquired in step S202 with the date and time when the liquid container 110 was brought into the baggage inspection facility 22, for example, a predetermined time such as several days. If the distance is more than that, an error may be displayed.

  Furthermore, the container information determination unit 370 determines whether or not the mass of the liquid container 110 measured by the mass measurement unit 310 matches the mass indicated by the container information read by the information reading unit 360 (S220). . Here, when determining coincidence, the container information determination unit 370 may determine whether the mass measured by the mass measurement unit 310 and the mass indicated by the container information are the same up to the number of significant digits. However, in consideration of an error, the determination may be made based on whether or not these mass differences are within a preset range. The same applies to the following match determination.

  In step S220, when the mass of the liquid container 110 measured by the mass measuring unit 310 and the mass indicated by the container information read by the information reading unit 360 do not match (S220: No), the container information determining unit 370 A message to that effect is output (S230). That is, the reason why these masses do not match is that the container information determination unit 370 outputs a warning, assuming that the liquid in the liquid container 110 has been replaced or the label 120 has been replaced. In this case, the container information determination unit 370 may turn on a red LED indicating a warning on the display unit 380 or may emit a sound indicating the warning.

  On the other hand, in step S220, when the mass measured by the mass measuring unit 310 and the mass read by the information reading unit 360 match (S220: Yes), the container information determining unit 370 reads by the information reading unit 360. It is determined whether or not the container information includes information indicating a dielectric constant (S240). In this case, the container information determination unit 370 determines that the information indicating the dielectric constant is not included when the dielectric constant is NULL in the container information, and indicates the dielectric constant when the value is other than NULL. Judge that information is included.

  In step S240, when the container information includes information indicating the dielectric constant (S240: Yes), the dielectric constant measuring unit 320 measures the dielectric constant of the liquid container 110 (S250). Here, since the configuration and operation of the dielectric constant measurement unit 320 and the capacitor 322 are the same as those of the dielectric constant measurement unit 220 and the capacitor 222 of the container information output device 200, description thereof will be omitted.

  Next, the container information determination unit 370 determines whether the dielectric constant of the liquid container 110 measured by the dielectric constant measurement unit 320 matches the dielectric constant indicated by the container information read by the information reading unit 360. (S260). When the dielectric constant measured by the dielectric constant measurement unit 320 does not match the dielectric constant read by the information reading unit 360 (S260: No), the container information determination unit 370 outputs that fact (S230).

  In step S260, when the dielectric constant measured by the dielectric constant measurement unit 320 and the dielectric constant read by the information reading unit 360 match (S260: Yes), the container information determination unit 370 reads the information from the information reading unit 360. Information indicating the mass stored in the container information storage unit 400 in association with the liquid container ID included in the read container information is read (S270). When the information indicating the mass is not read from the container information storage unit 400 in step S270 (S280: No), the mass and the dielectric constant are matched in steps S220 and S260. Is output (S290). That is, assuming that the liquid container 110 is an authentic product purchased at the duty-free shop 16, the container information determination unit 370 outputs a carry-in permission. In this case, the container information determination unit 370 may turn on a green LED that indicates that it is permitted to bring in the display unit 380, or may emit a sound that indicates permission. Further, the container information determination unit 370 writes information indicating the mass in association with the liquid container ID read by the information reading unit 360 in the container information storage unit 400 (S300).

  On the other hand, when the information indicating the mass is read from the container information storage unit 400 in step S270 (S280: Yes), the container information determination unit 370 is measured by the mass and mass measurement unit 310 indicated in the read information. It is further determined whether or not the mass matches (S310). In this case, when a plurality of masses are read from the container information storage unit 400 in association with the liquid container ID, the container information determination unit 370 uses those statistical values. An example of a statistical value is an average value. Furthermore, when the container information determination unit 370 determines a match, instead of determining whether the mass measured by the mass measurement unit 310 is within a preset range with respect to the average value, Based on the distribution created by these masses, the match may be determined based on where in the distribution the mass measured by the mass measuring unit 310 is located. In this case, when the number of pieces of mass information stored in the container information storage unit 400 in association with the liquid container ID exceeds a predetermined number, the container information determination unit 370 determines the latter from the determination criterion of the former. You may switch to a judgment standard.

  In step S310, when the mass indicated in the read information does not match the mass measured by the mass measuring unit 310 (S310: No), the container information inspection apparatus 300 proceeds to step S230. On the other hand, when the mass indicated in the read information matches the mass measured by the mass measurement unit 310 in step S310 (S310: Yes), the container information inspection apparatus 300 proceeds to step S290.

  In step S240, when the container information does not include information indicating the dielectric constant (S240: No), the container information determination unit 370 determines whether the container information includes information indicating the thermal conductivity. Is determined (S320). In step S320, when the information indicating the thermal conductivity is included in the container information (S320: Yes), the thermal conductivity measurement unit 340 measures the thermal conductivity of the liquid container 110 (S330). Here, since the configuration and operation of the thermal conductivity measurement unit 340, the heat source 342, and the temperature sensor 352 are the same as those of the thermal conductivity measurement unit 240, the heat source 242 and the temperature sensor 252 of the container information output device 200, description thereof is omitted. To do.

  Next, the container information determination unit 370 determines whether or not the thermal conductivity of the liquid container 110 measured by the thermal conductivity measurement unit 340 matches the thermal conductivity indicated by the container information read by the information reading unit 360. Is determined (S340). If the thermal conductivity measured by the thermal conductivity measurement unit 340 and the thermal conductivity read by the information reading unit 360 do not match (S340: No), the container information inspection apparatus 300 proceeds to step S230. On the other hand, when the thermal conductivity measured by the thermal conductivity measuring unit 340 matches the thermal conductivity read by the information reading unit 360 (S340: Yes), the container information inspection apparatus 300 proceeds to step S270.

  Moreover, in step S320, when the information which shows heat conductivity is not contained in container information (S320: No), the container information inspection apparatus 300 progresses to step S270. In this case, only the coincidence of the mass among the mass, the dielectric constant, and the thermal conductivity is confirmed. Therefore, in step S290, the container information determination unit 370 may output different from the case where two of the three of mass, dielectric constant, and thermal conductivity are confirmed. As an example of a different output, the container information determination unit 370 may light a yellow LED on the display unit 380.

  As described above, according to the present embodiment, the mass of the liquid container 110 measured by the container information output device 200 of the duty-free shop 16 of the airport 10 is confirmed by the container information inspection device 300 of the airport 20 and is brought into the airport 30. It can be determined whether the liquid container 110 is a genuine product purchased at the duty-free shop 16. Therefore, it is possible to quickly and easily determine that the liquid container 110 is not a dangerous substance, and to determine whether it can be brought in. In particular, since it is not necessary to specify the liquid itself contained in the liquid container 110, it can be determined more quickly.

  In steps S260 and S260, when the measured value does not match the value based on the container information, the liquid stored in the liquid container 110 is a dangerous substance based on the measured dielectric constant or thermal conductivity. It may be further determined whether or not there is. In this case, when it is determined that the liquid container 110 is dangerous, it is preferable that a warning is given to that effect. Further, in step S240 and S320, when information on the dielectric constant and thermal conductivity is read out, the fact that the respective information has been read is displayed in order to prompt the user of the container information inspection apparatus 300 to perform the measurement. You may display on the part 380. FIG.

  FIG. 7 shows another example of the container information output device 200. In the container information output device 200 of FIG. 7, the description of the same configuration and operation as those of the container information output device 200 of FIG. 2 is omitted.

  The container information output device 200 in FIG. 7 is inclined and is disposed below the container side surface support base 232 on which the side surface of the liquid container 110 is placed, and indicates the bottom surface of the liquid container 110. A container bottom surface support part 234, a dielectric constant measuring part 220, and three capacitors 222, 224, and 226 connected to the dielectric constant measuring part 220. The three capacitors 222, 224, and 226 are disposed along the container side surface support 232, that is, along the height direction of the side surface of the liquid container 110. As a result, the dielectric constant measurement unit 220 measures the dielectric constant at three locations along the height direction of the liquid container 110. Therefore, when liquids having different specific gravities are stored in the liquid container 110, it can be detected. In the example shown in FIG. 7, measurement is performed at three places in the height direction, but measurement may be performed at two places in the height direction, or may be performed at four or more places.

  In the container information output device 200 of FIG. 7, the dielectric constant measurement unit 220 may notify the information output unit 260 of the dielectric constant of the measurement location in association with information indicating the measurement location. In this case, the information output unit 260 may output information indicating the dielectric constant of the measurement location to the QR code 122 in association with the information indicating the measurement location.

  In FIG. 7, the configuration of the container information output device 200 has been described. In the container information inspection device 300, as shown in FIG. 7, the dielectric constant is measured at a plurality of locations in the height direction of the liquid container 110. Also good. In this case, when the information reading unit 360 of the container information inspection apparatus 300 reads the dielectric constant associated with the information indicating the measurement location from the QR code 122, the actual measurement value in the container information inspection apparatus 300 at the corresponding measurement location. And the value read from the QR code 122 are preferably compared.

  Furthermore, although the measurement location of the dielectric constant measurement unit 220 has been described in FIG. 7, this may be applied to the measurement location of the thermal conductivity measurement unit 240. For example, in the container information output apparatus 200, the set of the heat source 242 and the temperature sensor 252 may be arranged at three locations corresponding to FIG. Thereby, the thermal conductivity measuring unit 240 can measure the thermal conductivity at three locations along the height direction of the liquid container 110. In this case, the adjacent temperature sensors 252 may share the heat source 242 arranged one by one.

  FIG. 8 shows still another example of the container information output device 200. In the container information output device 200 of FIG. 8, the description of the same configuration and operation as those of the container information output device 200 of FIG. 7 is omitted.

  In the container information output device 200 of FIG. 8, the container bottom surface support portion 234 moves up and down along the container side surface support base 232. As a result, the liquid container 110 moves relative to the capacitors 222 and 224, that is, the liquid container 110 and the capacitor 222 move relative to each other, and the dielectric constant is measured at a plurality of positions in the height direction of the liquid container 110. be able to.

  8 can also be applied to the dielectric constant measurement unit 320 of the container information inspection apparatus 300, the thermal conductivity measurement unit 240 of the container information output apparatus 200, and the thermal conductivity measurement unit 340 of the container information inspection apparatus 300. it can. Further, in FIG. 8, the capacitor bottom surface support portion 234 is moved with the capacitor 222 and the like fixed, but instead the capacitor bottom surface support portion 234 may be fixed and the capacitor 222 and the like may be moved.

  As described above, according to the present embodiment, it is possible to determine whether or not the liquid container 110 brought into the airport 30 is a genuine product purchased at the duty-free shop 16. Therefore, it is possible to quickly and easily determine that the liquid container 110 is not a dangerous substance, and to determine whether it can be brought in.

  Although the airport security system 100 has been described as the above embodiment, the system can be used for security other than the airport. For example, the system can be used for security when entering other transportation or event venues.

  In addition to determining whether the physical quantities match, the liquid container ID read from the liquid container 110 matches the liquid container ID read from the receipt of the traveler who brought the liquid container 110. May be judged. In this case, in addition to printing the label 120 in step S150, the information output unit 260 of the container information output device 200 prints information described on the label 120 on a receipt. Thereby, security can be improved.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the description of the scope of claims that embodiments with such changes or improvements can be included in the technical scope of the invention.

It is a mimetic diagram explaining typically a plurality of airports 10, 20, and 30 in which airport security system 100 of this embodiment is used. It is a functional block diagram explaining the function of the container information output device 200. It is a flowchart which shows operation | movement (S10) of the container information output device 200. 4 is a functional block diagram illustrating functions of the container information inspection apparatus 300. FIG. An example of the information stored in the container information storage unit 400 is shown. It is a flowchart which shows operation | movement (S20) of the container information inspection apparatus 300. The other example of the container information output device 200 is shown. The further another example of the container information output device 200 is shown.

Explanation of symbols

10 airports, 12 departure gates, 14 baggage inspection places, 16 duty-free shops, 20 airports, 22 baggage inspection places, 30 airports, 32 immigration offices, 100 airport security systems, 110 liquid containers, 120 labels, 122 QR codes, 200 containers Information output device, 210 Mass measurement unit, 220 Dielectric constant measurement unit, 222 capacitor, 224 capacitor, 226 capacitor, 232 Container side support, 234 Container bottom support unit, 240 Thermal conductivity measurement unit, 242 Heat source, 252 Temperature sensor, 260 Information output unit, 270 Cash register, 300 Container information inspection device, 310 Mass measurement unit, 320 Dielectric constant measurement unit, 322 Capacitor, 340 Thermal conductivity measurement unit, 342 Heat source, 352 Temperature sensor 360 Information reading unit, 370 Container information Judgment unit, 380 display unit, 400 containers Broadcast storage unit

Claims (13)

A physical quantity measuring unit that measures a physical quantity of a liquid container containing a liquid, and an information output unit that prints and outputs container information including information indicating the physical quantity measured by the physical quantity measuring unit on a label; A container information output device installed in the store;
A physical quantity measuring unit for measuring the physical quantity of the liquid container, an information reading unit for reading the container information from the label attached to the liquid container, and the physical quantity of the liquid container measured by the physical quantity measuring unit A container information judging unit installed at a baggage inspection station, having a container information judging unit for judging and outputting whether or not the physical quantity indicated by the container information read by the information reading unit matches; Security system. The information output unit encrypts the container information and prints it on the label,
The security system according to claim 1, wherein the information reading unit acquires a physical quantity indicated by the container information by decoding the container information read from the label. In correspondence with the liquid container identification information for identifying the liquid container, further comprising a container information storage unit for storing information indicating the physical quantity of the liquid container,
The information output unit further prints the liquid container identification information on the label as the container information,
The container information determination unit is read by the information reading unit when the physical quantity of the liquid container measured by the physical quantity measurement unit matches the physical quantity indicated by the container information read by the information reading unit. In addition, information indicating the physical quantity in association with the liquid container identification information is written in the container information storage unit,
The container information determination unit indicates a physical quantity stored in the container information storage unit in association with the liquid container identification information included in the container information when container information is newly read from the information reading unit. The security system according to claim 1 or 2, further comprising: reading information and further determining whether or not the physical quantity indicated by the read information matches the physical quantity measured by the physical quantity measuring unit.   The security system according to claim 3, wherein a plurality of the container information inspection devices share one container information storage unit via a network.   5. The security system according to claim 1, wherein the physical quantity measurement unit of the container information output device and the container information determination unit includes a mass measurement unit that measures the mass of the liquid container as the physical quantity. The physical quantity measuring unit of the container information output device further includes a dielectric constant measuring unit that measures a dielectric constant of the liquid container,
The information output unit further prints on the label information indicating the dielectric constant measured by the dielectric constant measurement unit,
The physical quantity measuring unit of the container information inspection apparatus further includes a dielectric constant measuring unit that measures a dielectric constant of the liquid container,
The container information determination unit further determines whether or not the dielectric constant of the liquid container measured by the dielectric constant measurement unit matches the dielectric constant indicated by the container information read by the information reading unit. The security system according to claim 5, wherein   The security system according to claim 6, wherein the dielectric constant measuring unit of the container information output device and the container information inspection device measures the dielectric constant at a plurality of locations along the height direction of the liquid container.   8. The security according to claim 7, wherein the dielectric constant measurement unit of the container information output device and the container information inspection device measures the dielectric constant at a plurality of locations by sensors that move relatively along the height direction of the liquid container. system. The physical quantity measuring unit of the container information output device further includes a thermal conductivity measuring unit that measures the thermal conductivity of the liquid container,
The information output unit further prints on the label information indicating the thermal conductivity measured by the thermal conductivity measurement unit,
The physical quantity measuring unit of the container information inspection apparatus further includes a thermal conductivity measuring unit that measures the thermal conductivity of the liquid container,
The container information determination unit further determines whether or not the thermal conductivity of the liquid container measured by the thermal conductivity measurement unit matches the thermal conductivity indicated by the container information read by the information reading unit. The security system according to any one of claims 5 to 8, wherein the security system is determined and output.   The security system according to claim 9, wherein the thermal conductivity measurement unit of the container information output device and the container information inspection device measures thermal conductivity at a plurality of locations along a height direction of the liquid container.   11. The thermal conductivity measurement unit of the container information output device and the container information inspection device measures thermal conductivity at a plurality of locations by sensors that move relatively along the height direction of the liquid container. Security system.   The security system according to any one of claims 1 to 11, wherein the container information output device further includes a cash register that records the sale and purchase of the liquid container. A store-side physical quantity measuring step for measuring a physical quantity of a liquid container containing liquid by a physical quantity measuring unit installed in the store;
An information output step of printing container information including information indicating the physical quantity measured by the store-side physical quantity measuring step on a label and attaching the information to the liquid container;
An inspection-side physical quantity measuring step for measuring a physical quantity of the liquid container by a physical quantity measuring unit installed in a baggage inspection place;
An information reading step of reading the container information from the label affixed to the liquid container;
A security check comprising: a container information determination step for determining whether or not the physical quantity of the liquid container measured by the inspection-side physical quantity measurement step matches the physical quantity indicated by the container information read by the information reading step Method.

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