WO2023182516A1 - Passing vehicle identification system and passing vehicle identification method - Google Patents

Passing vehicle identification system and passing vehicle identification method Download PDF

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Publication number
WO2023182516A1
WO2023182516A1 PCT/JP2023/011998 JP2023011998W WO2023182516A1 WO 2023182516 A1 WO2023182516 A1 WO 2023182516A1 JP 2023011998 W JP2023011998 W JP 2023011998W WO 2023182516 A1 WO2023182516 A1 WO 2023182516A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
rfid tag
passing
predetermined area
information
Prior art date
Application number
PCT/JP2023/011998
Other languages
French (fr)
Japanese (ja)
Inventor
慶太郎 水流
洋介 永村
知久 辻
Original Assignee
Ｔｏｐｐａｎエッジ株式会社
トヨタ自動車株式会社
慶太郎 水流
洋介 永村
知久 辻
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ｔｏｐｐａｎエッジ株式会社, トヨタ自動車株式会社, 慶太郎 水流, 洋介 永村, 知久 辻 filed Critical Ｔｏｐｐａｎエッジ株式会社
Publication of WO2023182516A1 publication Critical patent/WO2023182516A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/08—Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
    • G06Q10/083—Shipping
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors

Definitions

  • the present invention relates to a passing vehicle identification system and a passing vehicle identification method.
  • Vehicles manufactured at factories may be stored in vehicle storage areas such as motor pools during the process of being transported to sales locations. 2. Description of the Related Art In this type of vehicle storage facility, a technique is known in which vehicle information is collected and vehicle management is performed by reading information from an RFID tag mounted on the vehicle using a reading device (for example, Patent Document 1).
  • Patent Document 1 discloses a vehicle transportation management system for managing the transportation of at least one vehicle from a departure point to a destination point.
  • the automobile transportation management system disclosed in Patent Document 1 includes at least one tag device in which individual identification information for identifying each automobile is written, which is attached to each automobile to be transported, and which emits individual identification information by radio waves.
  • transportation that is installed at at least one location between the departure point and the arrival point, and that acquires individual identification information emitted by radio waves from the tag device, and indicates that a vehicle equipped with a tag device that emits individual identification information has passed.
  • It has at least one reader device that notifies progress information to a management center through a communication network, and a center device installed in the management center that receives transport progress information from each reader device and records it in a database.
  • vehicles from different manufacturers may be stored in the same storage area, and vehicles equipped with RFID tags and vehicles without RFID tags may coexist. . Therefore, in predetermined areas such as the entrances and exits of this type of vehicle storage area or vehicle monitoring areas established on routes connecting vehicle storage areas and transport vessels, vehicles equipped with RFID tags or vehicles without RFID tags can pass.
  • the automobile transportation management system disclosed in Patent Document 1 is based on the premise that all vehicles being transported are equipped with RFID tags. Therefore, in the automobile transportation management system disclosed in Patent Document 1, even if a vehicle not equipped with an RFID tag passes through a predetermined area such as an entrance/exit of a vehicle storage lot, it is difficult to identify the vehicle.
  • the present invention has been made in view of the above, and provides a passing vehicle discrimination system and a passing vehicle discrimination method that can accurately discriminate vehicles passing through a predetermined area regardless of whether or not they are equipped with an RFID tag. With the goal.
  • the passing vehicle discrimination system of the present invention includes an optical sensor that irradiates a side surface of a vehicle passing through a predetermined area with a laser beam and detects the reflected light of the laser beam reflected from the side surface.
  • a reading device that reads information from an RFID tag mounted on the vehicle; and a calculation that detects the vehicle passing through the predetermined area based on the detection result of the optical sensor and obtains the reading result of the reading device.
  • a processing device, and the arithmetic processing device is configured to read the information of the RFID tag within a predetermined time based on the timing at which the vehicle passing through the predetermined area is detected, the processing device reads the information from the RFID tag at the timing.
  • the vehicle detected at the time is determined to be the vehicle equipped with the RFID tag, and if the reading device is unable to read the information of the RFID tag within the predetermined time, the vehicle detected at the time is determined to be the vehicle equipped with the RFID tag.
  • the present invention is characterized in that the vehicle is determined to be the vehicle in which the RFID tag is not mounted.
  • the processing unit can accurately determine the correspondence between the vehicle detected based on the detection result of the optical sensor and the vehicle equipped with the RFID tag that transmits the information read by the reader. can be grasped. Then, the arithmetic processing unit determines whether the detected vehicle based on the detection result of the optical sensor is a vehicle equipped with an RFID tag or a vehicle without an RFID tag, based on the reading result of the reading device. can do. Thereby, the arithmetic processing device can accurately determine a vehicle that is not equipped with an RFID tag and passes through the predetermined area. Therefore, the passing vehicle discrimination system can accurately discriminate vehicles passing through a predetermined area regardless of whether or not an RFID tag is installed.
  • the predetermined time is the sum of a first time that has elapsed from the timing and a second time that has elapsed from the timing.
  • the area where the reading device can read the information transmitted from the RFID tag (hereinafter also referred to as “reading area”) is larger than the area where the optical sensor can detect the reflected light of the laser beam (hereinafter also referred to as “detection area”).
  • detection area the area where the optical sensor can detect the reflected light of the laser beam
  • the timing at which the reading device reads the information transmitted from the RFID tag and the timing at which the vehicle is detected based on the detection result of the optical sensor may not match.
  • the above-mentioned predetermined time is the sum of the first time going back from the timing detected based on the detection result of the optical sensor and the second time elapsed from the timing.
  • the processing unit can detect the vehicle detected based on the detection result of the optical sensor and the vehicle equipped with the RFID tag that transmits the information read by the reader, even if the timings do not match. Correspondence relationships can be accurately grasped. Therefore, the passing vehicle discrimination system can more accurately discriminate vehicles passing through a predetermined area regardless of whether or not an RFID tag is installed.
  • the arithmetic processing device calculates the length of the object passing through the predetermined area in the passing direction based on the detection result of the optical sensor, and determines whether the object passes through the predetermined area based on the calculated length. It is detected that the vehicle is the vehicle, and it is determined whether or not the detected vehicle is the vehicle on which the RFID tag is mounted.
  • the processing unit can detect not only a vehicle equipped with an RFID tag or a vehicle not equipped with an RFID tag, but also an object other than a vehicle such as a worker passing through a predetermined area. Can be accurately determined. Therefore, even if an object other than a vehicle passes through the predetermined area, the passing vehicle identification system can accurately identify the vehicle passing through the predetermined area regardless of whether or not it is equipped with an RFID tag.
  • the predetermined area is provided at a wharf where a transport ship that transports the vehicle is anchored, and the information on the RFID tag is identification information of the vehicle to be loaded onto or unloaded on the transport ship.
  • the arithmetic processing device calculates the number of the vehicles to be loaded or unloaded based on the vehicle discrimination result.
  • the arithmetic processing device is configured such that the predetermined area is an area through which vehicles to be loaded or unloaded pass, and the vehicles to be loaded or unloaded include a mixture of vehicles equipped with RFID tags and vehicles not equipped with RFID tags. Even if the number of vehicles to be loaded or unloaded can be accurately and easily calculated. Therefore, the passing vehicle identification system can accurately identify vehicles passing through a predetermined area regardless of whether or not they are equipped with RFID tags, and can appropriately manage vehicles being loaded or unloaded.
  • the passing vehicle discrimination system further includes a notification device that notifies the surroundings of the predetermined area of the vehicle discrimination result by the arithmetic processing unit, and the notification device is configured to detect at least one of the vehicle discrimination results by the arithmetic processing unit. , to notify the determination result of the vehicle in which the RFID tag is not mounted.
  • Vehicles equipped with RFID tags are managed by a reading device reading information from the RFID tags.
  • vehicles that are not equipped with RFID tags are equipped with an item tag or the like on which a barcode indicating identification information of the vehicle is written.
  • Vehicles without RFID tags are managed by workers working around a predetermined area by reading barcodes.
  • the notification device reports the determination result of a vehicle not equipped with an RFID tag. Thereby, the worker can easily understand that a vehicle not equipped with an RFID tag passes through the predetermined area, and can read the barcode of the vehicle. Therefore, the passing vehicle discrimination system can accurately discriminate vehicles passing through a predetermined area regardless of whether or not they are equipped with an RFID tag, and can appropriately manage vehicles that are not equipped with an RFID tag.
  • the optical sensor, the reading device, the arithmetic processing device, and the notification device are installed in a moving body.
  • the passing vehicle identification system can immediately install the optical sensor, the reading device, the arithmetic processing device, and the notification device in an unspecified outdoor location and immediately remove them. Therefore, the passing vehicle identification system can be easily applied to various locations, and can accurately identify passing vehicles regardless of whether or not they are equipped with RFID tags.
  • the passing vehicle identification method of the present invention includes the steps of: irradiating a laser beam onto a side surface of a vehicle passing through a predetermined area; and detecting reflected light of the laser beam reflected from the side surface; detecting the vehicle passing through the predetermined area based on the detection result of the reflected light; and detecting the vehicle passing through the predetermined area based on the timing at which the vehicle passing through the predetermined area is detected. If the information of the RFID tag can be read within the predetermined time, the vehicle detected at the timing is determined to be the vehicle equipped with the RFID tag, and the RFID tag is read within the predetermined time. If the information cannot be read, the vehicle detected at the timing is determined to be the vehicle in which the RFID tag is not mounted.
  • the passing vehicle identification method can accurately grasp the correspondence relationship between a vehicle detected based on the detection result of reflected light and a vehicle equipped with an RFID tag that transmits the read information. can.
  • the passing vehicle identification method determines whether the detected vehicle is a vehicle equipped with an RFID tag or a vehicle without an RFID tag based on the detection result of the reflected light. It can be determined based on Thereby, the passing vehicle discrimination method can accurately discriminate a vehicle that is not equipped with an RFID tag and passes through the predetermined area. Therefore, the passing vehicle discrimination method can accurately discriminate a vehicle passing through a predetermined area regardless of whether an RFID tag is installed or not.
  • FIG. 2 is a diagram illustrating a predetermined area to which the passing vehicle discrimination system of the present embodiment is applied.
  • FIG. 2 is a schematic diagram showing the external configuration of the passing vehicle identification system shown in FIG. 1.
  • FIG. 3 is a diagram showing the functional configuration of the passing vehicle discrimination system shown in FIG. 2.
  • FIG. 4 is a diagram illustrating processing performed by the arithmetic processing device shown in FIG. 3.
  • FIG. 4 is a flowchart (part 1) showing a passing vehicle discrimination process performed by the arithmetic processing device shown in FIG. 3;
  • 4 is a flowchart (part 2) showing a passing vehicle discrimination process performed by the arithmetic processing device shown in FIG. 3;
  • FIG. 1 is a diagram illustrating a predetermined area A to which a passing vehicle discrimination system 1 of this embodiment is applied.
  • FIG. 2 is a schematic diagram showing the external configuration of the passing vehicle identification system 1 shown in FIG. 1.
  • FIG. 3 is a diagram showing the functional configuration of the passing vehicle discrimination system 1 shown in FIG. 2.
  • FIG. 4 is a diagram illustrating the processing performed by the arithmetic processing device 41 shown in FIG. 3.
  • vehicle storage areas such as motor pools are set up to store vehicles that are loaded onto land transportation vehicles that transport vehicles to sales offices and wharves.
  • a vehicle storage area such as a motor pool is installed at a wharf where a transport ship that transports vehicles is anchored, such as a motor pool for storing vehicles that are loaded onto the transport ship or vehicles that are unloaded from the transport ship.
  • the passing vehicle identification system 1 identifies vehicles passing through a predetermined area A, such as an entrance/exit of a vehicle storage area or a vehicle monitoring location provided on a route connecting a land transport vehicle or a transport ship to a vehicle storage area. It is a system.
  • a vehicle monitoring location provided on a route connecting a transport ship and a vehicle storage yard will be exemplified as the predetermined area A to which the passing vehicle identification system 1 is applied.
  • FIG. 1 shows how vehicles are loaded onto a transport ship (symbol S in FIG. 1) from a vehicle storage area installed at a wharf.
  • Objects that pass through the predetermined area A include a vehicle to be transported that is equipped with an RFID tag (represented by V1 in FIG. 1) and a vehicle to be transported that is not equipped with an RFID tag (represented by V2 in FIG. 1).
  • These vehicles to be transported are vehicles that are loaded onto a transport ship or unloaded.
  • the model, shape, size, color, etc. of the vehicle to be transported are not particularly limited.
  • the timing at which an object passes through the predetermined area A is irregular.
  • the speed of the object passing through the predetermined area A may be greater than or equal to 0 km/h and less than or equal to approximately 40 km/h, and is not constant.
  • the distance between vehicles passing through the predetermined area A may be 70 cm or more and is not constant.
  • objects passing through the predetermined area A there can be considered a worker working around the predetermined area A (symbol W in FIG. 1) and a worker bus (symbol V3 in FIG. 1) used by the worker.
  • the worker bus is a vehicle that is not subject to transportation.
  • the worker bus is equipped with an RFIC tag indicating that it is a worker bus, and can be clearly distinguished from the RFID tag mounted on the vehicle to be transported.
  • objects passing through the predetermined area A will be described using as examples a vehicle to be transported equipped with an RFID tag, a vehicle to be transported without an RFID tag, a bus for workers, and a worker.
  • the objects passing through the predetermined area A are not particularly limited, as long as there are at least a vehicle to be transported equipped with an RFID tag and a vehicle to be transported without an RFID tag.
  • the passing vehicle identification system 1 is arranged on one side of the predetermined area A extending in the passing direction, but not on both sides.
  • the passing vehicle identification system 1 can be used in all weather conditions.
  • the passing vehicle discrimination system 1 is installed in a moving object 10 such as a vehicle or a robot. In this embodiment, a vehicle will be described as an example of the moving body 10, as shown in FIG.
  • the passing vehicle identification system 1 includes an optical sensor 20, a reading device 30, a computer 40, and a notification device 50, as shown in FIGS. 2 and 3.
  • the optical sensor 20, the reading device 30, the computer 40, and the notification device 50 are installed on the moving body 10. Thereby, the passing vehicle identification system 1 can immediately install the optical sensor 20, the reading device 30, the computer 40, and the notification device 50 in an unspecified outdoor location and immediately remove them. Therefore, the passing vehicle identification system 1 can be easily applied to various locations as a system that can accurately discriminate passing vehicles regardless of whether or not they are equipped with RFID tags.
  • the optical sensor 20 is a sensor that irradiates a side surface of an object passing through a predetermined area A with a laser beam and detects the reflected light of the laser beam reflected from the side surface.
  • the optical sensor 20 is configured by, for example, LiDAR.
  • the optical sensor 20 is attached in such a position that laser light is horizontally irradiated toward the predetermined region A from one side of the predetermined region A.
  • the optical sensor 20 does not require a reflective plate that reflects laser light to be installed on the other side of the predetermined area A.
  • the optical sensor 20 of this embodiment is attached to a support member 13 extending in the vertical direction of a hitch carrier 12 fixed to the rear part of the moving body 10.
  • the reading device 30 is a device that reads information from RFID tags mounted on vehicles passing through the predetermined area A.
  • the reading device 30 includes an antenna 31 and a reader 32.
  • Antenna 31 receives radio waves transmitted from the RFID tag.
  • the antenna 31 is attached to the support member 13 so as to face the predetermined region A from one side of the predetermined region A.
  • the reader 32 reads the information of the RFID tag from the radio waves received by the antenna 31.
  • the reader 32 adds time information of the timing at which the information of the RFID tag is read to the information of the RFID tag, and stores the information in the storage area of the reader 32 .
  • the information on the RFID tag is identification information of a vehicle to be transported or identification information of a worker bus.
  • the reader 32 transmits the reading result of the information of the RFID tag to the computer 40 .
  • the leader 32 may be placed inside the moving body 10 or may be attached to the hitch carrier 12.
  • the computer 40 controls the operations of the optical sensor 20, the reading device 30, and the notification device 50 to realize the functions of the passing vehicle identification system 1.
  • the computer 40 is configured by a mobile PC or a PC built into the mobile object 10.
  • Computer 40 has an arithmetic processing unit 41 .
  • the arithmetic processing unit 41 is composed of a CPU, ROM, RAM, etc., and realizes the functions of the computer 40 by the CPU executing a program stored in the ROM.
  • the arithmetic processing unit 41 detects an object passing through the predetermined area A based on the detection result of the optical sensor 20, and acquires the reading result of the reading device 30.
  • the arithmetic processing unit 41 calculates the length of the object passing through the predetermined area A in the passing direction based on the detection result of the optical sensor 20, and based on the calculated length, the calculation processing unit 41 calculates the length of the object in the passing direction. Detect that. Specifically, the arithmetic processing unit 41 detects that the object is a vehicle when the calculated length is equal to or greater than a threshold (for example, 700 mm), and when the calculated length is less than the threshold , detects that the object is other than a vehicle.
  • a threshold for example, 700 mm
  • the processing unit 41 detects whether not only a vehicle to be transported equipped with an RFID tag or a vehicle to be transported without an RFID tag, but also an object other than a vehicle such as a worker passes through the predetermined area A.
  • these can be accurately identified. Therefore, even if an object other than a vehicle passes through the predetermined area A, the passing vehicle identification system 1 can accurately identify the vehicle passing through the predetermined area A regardless of whether an RFID tag is installed or not.
  • the arithmetic processing unit 41 determines whether the detected vehicle is a vehicle equipped with an RFID tag and to be transported, a vehicle not equipped with an RFID tag and to be transported, or a worker bus. . Specifically, as shown in FIG. 4, if the reading device 30 is able to read the information on the RFID tag within a predetermined time based on the timing at which a vehicle passing through the predetermined area A is detected, The vehicle detected at the timing is determined to be a vehicle equipped with the RFID tag. On the other hand, if the reading device 30 is unable to read the information of the RFID tag within the predetermined time, the arithmetic processing unit 41 determines that the vehicle detected at the timing is a vehicle in which the RFID tag is not installed. do.
  • the arithmetic processing unit 41 can accurately determine the correspondence relationship between the vehicle detected based on the detection result of the optical sensor 20 and the vehicle equipped with the RFID tag that transmits the information read by the reading device 30. can be grasped. Then, the arithmetic processing unit 41 determines whether the detected vehicle is an RFID tag-equipped vehicle or a non-RFID tag-equipped vehicle based on the detection result of the optical sensor 20 based on the reading result of the reading device 30. It can be determined based on Thereby, the arithmetic processing unit 41 can accurately determine a vehicle passing through the predetermined area A that is not equipped with an RFID tag. Therefore, the passing vehicle discrimination system 1 can accurately discriminate a vehicle passing through the predetermined area A regardless of whether an RFID tag is installed or not.
  • the arithmetic processing device 41 determines that the detected vehicle is the vehicle to be transported equipped with the RFID tag based on the information of the RFID tag. or a worker bus.
  • the computer 40 has a storage device that stores identification information of worker buses in advance.
  • the arithmetic processing unit 41 can determine whether the detected vehicle is a worker bus by comparing the information of the RFID tag with the information stored in the storage device.
  • the arithmetic processing device 41 may be communicably connected to a server device that manages a vehicle to be transported via a wireless communication device of the computer 40.
  • the arithmetic processing device 41 can transmit information on the RFID tag to the server device.
  • the server device compares the information of the RFID tag with information in a database in which identification information of the vehicle to be transported is registered, and transmits the comparison result to the computer 40.
  • the processing unit 41 can determine whether the detected vehicle is a vehicle equipped with an RFID tag and to be transported by checking the verification result sent from the server device.
  • the database in which identification information of vehicles to be transported is registered may be integrated with the computer 40.
  • the server device manages the location and condition of the vehicle during the transportation process, the number of vehicles stored in the vehicle storage area, and the like.
  • the processing unit 41 detects whether not only a vehicle to be transported that is equipped with an RFID tag or a vehicle to be transported that is not equipped with an RFID tag, but also a worker bus, which is a vehicle that is not to be transported, is traveling in the predetermined area A. Even if they pass through, they can be accurately identified. Therefore, even if the worker bus passes through the predetermined area A, the passing vehicle identification system 1 can accurately identify the vehicle passing through the predetermined area A regardless of whether or not it is equipped with an RFID tag.
  • the above-mentioned predetermined time is the sum of the first time that goes back from the timing when the vehicle passing through the predetermined area A was detected, and the second time that elapsed from that timing.
  • the reading area where the reading device 30 can read the information transmitted from the RFID tag is often wider in the vehicle passing direction than the detection area where the optical sensor 20 can detect the reflected light of the laser beam. In this case, the timing at which the reading device 30 reads the information transmitted from the RFID tag and the timing at which the vehicle is detected based on the detection result of the optical sensor 20 may not match.
  • the arithmetic processing unit 41 can detect the vehicle detected based on the detection result of the optical sensor 20 even if the two timings do not match. It is possible to accurately grasp the correspondence with a vehicle equipped with an RFID tag that transmits the information read by the reading device 30. Therefore, the passing vehicle discrimination system 1 can more accurately discriminate vehicles passing through the predetermined area A regardless of whether or not an RFID tag is installed.
  • the arithmetic processing unit 41 calculates the number of vehicles to be shipped or unloaded based on the determination result of vehicles passing through the predetermined area A.
  • the arithmetic processing unit 41 determines that the predetermined area A is an area through which vehicles to be loaded or unloaded pass, and the vehicles to be loaded or unloaded include vehicles equipped with RFID tags and vehicles without RFID tags. Even if the number of vehicles to be loaded or unloaded can be accurately and easily calculated. Therefore, the passing vehicle discrimination system 1 can accurately discriminate vehicles passing through the predetermined area A regardless of whether or not they are equipped with RFID tags, and can appropriately manage vehicles to be loaded or unloaded.
  • the arithmetic processing device 41 controls the operation of the notification device 50 according to the determination result of vehicles passing through the predetermined area A.
  • the notification device 50 of this embodiment is attached to a roof carrier 11 fixed to the upper part of the moving body 10.
  • the arithmetic processing unit 41 controls a notification device to notify people around the predetermined area A that the vehicle is passing. 50 can be controlled.
  • the notification device 50 can cause the first lamp 51 to light up and the first buzzer 52 to generate a sound.
  • the arithmetic processing unit 41 causes the notification device 50 to notify the surroundings of the predetermined area A that the vehicle is passing. Control.
  • the notification device 50 lights up the second lamp 53 and causes the second buzzer 54 to generate a sound.
  • Vehicles to be transported equipped with RFID tags are managed by the reading device 30 reading information from the RFID tags.
  • a vehicle to be transported that is not equipped with an RFID tag is equipped with an item tag or the like on which a barcode indicating identification information of the vehicle is written.
  • Vehicles to be transported that are not equipped with RFID tags are managed by workers reading barcodes.
  • the notification device 50 notifies at least the determination result of a vehicle to be transported that is not equipped with an RFID tag.
  • workers working around the predetermined area A can easily understand that a vehicle to be transported that is not equipped with an RFID tag passes through the predetermined area, and can read the barcode of the vehicle. . Therefore, the passing vehicle discrimination system 1 can accurately discriminate vehicles passing through the predetermined area A regardless of whether or not they are equipped with an RFID tag, and can appropriately manage vehicles that are not equipped with an RFID tag.
  • the arithmetic processing unit 41 controls the notification device 50 so that the lamps 51 and 53 are not lit and the buzzers 52 and 54 do not emit sound. can be controlled.
  • the arithmetic processing device 41 only needs to control the operation of the notification device 50 so that the notification mode is changed according to the determination result of an object passing through the predetermined area A, and the configuration and notification mode of the notification device 50 are not particularly limited. .
  • FIG. 5 is a flowchart (part 1) showing the passing vehicle discrimination process performed by the arithmetic processing unit 41 shown in FIG. 3.
  • FIG. 6 is a flowchart (part 2) showing the passing vehicle discrimination process performed by the arithmetic processing device 41 shown in FIG.
  • the arithmetic processing unit 41 performs the processing shown in FIG. 5 and the processing shown in FIG. 6 in parallel.
  • the arithmetic processing unit 41 repeatedly performs each process shown in FIGS. 5 and 6 at a predetermined period. Below, after explaining the process shown in FIG. 5, the process shown in FIG. 6 will be explained.
  • step S1 the arithmetic processing unit 41 controls the reading device 30 to determine whether or not radio waves transmitted from the RFID tag have been received.
  • the processing device 41 moves to step S2. If the reading device 30 is not receiving the radio wave, the arithmetic processing device 41 ends the process shown in FIG. 5.
  • step S2 the processing unit 41 controls the reading device 30 to read the information of the RFID tag from the received radio waves.
  • the reading device 30 adds time information of the timing at which the RFID tag information was read to the read RFID tag information, and stores the added information in the storage area of the reading device 30.
  • step S3 the arithmetic processing unit 41 controls the reading device 30 to transmit the information of the read RFID tag to the computer 40.
  • the arithmetic processing device 41 stores the RFID tag information transmitted to the computer 40 in a predetermined storage area of the arithmetic processing device 41 . Thereafter, the arithmetic processing unit 41 ends the process shown in FIG.
  • step S11 the processing unit 41 controls the optical sensor 20 to irradiate the side surface of the object passing through the predetermined area A with laser light.
  • step S12 the arithmetic processing unit 41 controls the optical sensor 20 to determine whether the reflected light of the laser beam reflected from the side surface of the object passing through the predetermined area A is detected.
  • the arithmetic processing unit 41 moves to step S13. If the optical sensor 20 does not detect reflected light, the arithmetic processing unit 41 ends the process shown in FIG. 6 .
  • step S13 the processing unit 41 calculates the length of the object passing through the predetermined area A in the passing direction from the detection result of the reflected light by the optical sensor 20.
  • step S14 the arithmetic processing unit 41 determines whether the calculated length of the object in the passing direction is greater than or equal to a threshold value. If the calculated length of the object in the passing direction is equal to or greater than the threshold value, the arithmetic processing device 41 moves to step S16. If the calculated length of the object in the passing direction is less than the threshold value, the arithmetic processing device 41 moves to step S15.
  • step S15 the processing unit 41 detects that the object passing through the predetermined area A is other than a vehicle. Thereafter, the arithmetic processing unit 41 ends the process shown in FIG.
  • step S16 the processing unit 41 detects that the object passing through the predetermined area A is a vehicle.
  • step S17 the arithmetic processing unit 41 determines whether the reading device 30 was able to read the information on the RFID tag within a predetermined time based on the timing at which a vehicle passing through the predetermined area A was detected.
  • the arithmetic processing device 41 stores the RFID tag information transmitted from the reading device 30 in a predetermined storage area of the arithmetic processing device 41 in step S3 of FIG.
  • This RFID tag information has time information added to the timing at which the information of the RFID tag was read.
  • the arithmetic processing unit 41 determines whether the RFID tag information is stored in a predetermined storage area and whether the time information added to the RFID tag information is included within a predetermined time. The determination in step S17 can be made.
  • the arithmetic processing device 41 moves to step S20. If the reading device 30 is unable to read the information on the RFID tag within the predetermined time, the arithmetic processing device 41 moves to step S18.
  • step S18 the arithmetic processing unit 41 determines that the vehicle detected in step S16 is a vehicle to be transported that is not equipped with an RFID tag.
  • step S19 the arithmetic processing unit 41 turns on the first lamp 51 and causes the first buzzer 52 to generate a sound. Thereafter, the arithmetic processing unit 41 ends the process shown in FIG.
  • step S20 the processing unit 41 determines whether the information on the RFID tag read within a predetermined time indicates a worker bus. If the information on the RFID tag indicates a worker bus, the processing unit 41 moves to step S21. If the information on the RFID tag does not indicate a worker bus, the processing unit 41 moves to step S22.
  • step S21 the arithmetic processing unit 41 determines that the vehicle detected in step S16 is a worker bus. Thereafter, the arithmetic processing unit 41 ends the process shown in FIG.
  • step S22 the arithmetic processing unit 41 determines that the vehicle detected in step S16 is a vehicle equipped with an RFID tag and to be transported.
  • step S23 the arithmetic processing unit 41 turns on the second lamp 53 and causes the second buzzer 54 to generate a sound. Thereafter, the arithmetic processing unit 41 ends the process shown in FIG.
  • the passing vehicle identification system 1 of the present embodiment includes an optical sensor 20 that irradiates a laser beam onto the side surface of a vehicle passing through a predetermined area A and detects the reflected light of the laser beam reflected from the side surface. Equipped with The passing vehicle identification system 1 includes a reading device 30 that reads information from an RFID tag mounted on a vehicle. The passing vehicle identification system 1 includes an arithmetic processing unit 41 that detects a vehicle passing through a predetermined area A based on the detection result of the optical sensor 20 and acquires the reading result of the reading device 30.
  • the arithmetic processing device 41 recognizes the vehicle detected at the timing as the RFID tag. It is determined that the vehicle is equipped with a tag. If the reading device 30 is unable to read the information of the RFID tag within the predetermined time, the arithmetic processing unit 41 determines that the vehicle detected at the timing is a vehicle that is not equipped with the RFID tag.
  • the arithmetic processing unit 41 can accurately determine the correspondence relationship between the vehicle detected based on the detection result of the optical sensor 20 and the vehicle equipped with the RFID tag that transmits the information read by the reading device 30. can be grasped. Then, the arithmetic processing unit 41 determines whether the detected vehicle is an RFID tag-equipped vehicle or a non-RFID tag-equipped vehicle based on the detection result of the optical sensor 20 based on the reading result of the reading device 30. It can be determined based on Thereby, the arithmetic processing unit 41 can accurately determine a vehicle passing through the predetermined area A that is not equipped with an RFID tag. Therefore, the passing vehicle discrimination system 1 can accurately discriminate a vehicle passing through the predetermined area A regardless of whether an RFID tag is installed or not.
  • the passing vehicle discrimination method of this embodiment can be realized by the arithmetic processing unit 41 performing each process shown in FIGS. 5 and 6.
  • the method for identifying a passing vehicle includes irradiating a laser beam onto the side surface of a vehicle passing through a predetermined area A, and detecting the reflected light of the laser beam reflected from the side surface (step S11 and step S12). ).
  • the passing vehicle identification method includes reading information from an RFID tag mounted on the vehicle (step S2).
  • the passing vehicle determination method includes detecting a vehicle passing through the predetermined area A based on the detection result of reflected light (step S16).
  • the passing vehicle identification method is such that if the information on the RFID tag can be read within a predetermined time based on the timing at which a vehicle passing through a predetermined area A is detected, the vehicle detected at that timing is identified as a vehicle equipped with the RFID tag. (step S21 and step S22).
  • the passing vehicle determination method includes, if the information of the RFID tag cannot be read within the predetermined time, the vehicle detected at the timing is determined to be a vehicle that is not equipped with the RFID tag (step S18). has.
  • the passing vehicle identification method of this embodiment accurately grasps the correspondence relationship between the vehicle detected based on the detection result of reflected light and the vehicle equipped with the RFID tag that transmits the read information. be able to.
  • the passing vehicle identification method determines whether the detected vehicle is a vehicle equipped with an RFID tag or a vehicle without an RFID tag based on the detection result of the reflected light. It can be determined based on Thereby, the passing vehicle discrimination method can accurately discriminate a vehicle that is not equipped with an RFID tag and passes through the predetermined area A. Therefore, the passing vehicle discrimination method can accurately discriminate a vehicle passing through the predetermined area A regardless of whether an RFID tag is installed or not.
  • the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention as set forth in the claims. It can be carried out.
  • the present invention does not include adding the configuration of one embodiment to the configuration of another embodiment, replacing the configuration of one embodiment with another embodiment, or deleting a part of the configuration of one embodiment. You can

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Abstract

The present invention accurately identifies a vehicle passing a predetermined region regardless of the present/absence of an RFID tag mounted thereon. A passing vehicle identification system 1 comprises: an optical sensor 20 which emits laser light onto a side surface of a vehicle passing a predetermined region A, and detects the reflected light of the laser light; a reading device 30 for reading the information of an RFID tag mounted on the vehicle; and an arithmetic processing device 41 which detects a vehicle passing the predetermined region A on the basis of the detection result of the optical sensor 20, and acquires the reading result of the reading device 30. When the information of the RFID tag is read within a predetermined time starting from the time point at which the vehicle passing the predetermined region A is detected, the arithmetic processing device 41 identifies the vehicle detected at the time point as a vehicle on which the RFID tag is mounted. When the information of the RFID tag is not read within the predetermined time, the arithmetic processing device 41 identifies the vehicle detected at the time point as a vehicle on which no RFID tag is mounted.

Description

通過車両判別システム及び通過車両判別方法Passing vehicle identification system and passing vehicle identification method
　本発明は、通過車両判別システム及び通過車両判別方法に関する。 The present invention relates to a passing vehicle identification system and a passing vehicle identification method.
　工場で製造された車両は、販売所に輸送される過程において、モータープール等の車両保管場に保管されることがある。この種の車両保管場において、車両に搭載されたＲＦＩＤタグの情報を、読取装置により読み取ることによって、車両の情報収集及び車両の管理を行う技術が知られている（例えば特許文献１）。 Vehicles manufactured at factories may be stored in vehicle storage areas such as motor pools during the process of being transported to sales locations. 2. Description of the Related Art In this type of vehicle storage facility, a technique is known in which vehicle information is collected and vehicle management is performed by reading information from an RFID tag mounted on the vehicle using a reading device (for example, Patent Document 1).
　特許文献１には、少なくとも１台の自動車の出発地点から到着地点までの輸送を管理するための自動車輸送管理システムが開示されている。特許文献１に開示された自動車輸送管理システムは、各自動車を識別するための個体識別情報が書き込まれ、輸送される自動車の各々に装着され、個体識別情報を無線電波で発する少なくとも１つのタグ装置と、出発地点から到着地点までの少なくとも１ヶ所に設置され、タグ装置から無線電波で発せられる個体識別情報を取得して、個体識別情報を発するタグ装置を装着した自動車が通過したことを示す輸送経過情報を、通信ネットワークを通じて管理センタに通知する少なくとも１つのリーダ装置と、管理センタに設置され、各リーダ装置から輸送経過情報を受信し、データベースに記録するセンタ装置と、を有する。 Patent Document 1 discloses a vehicle transportation management system for managing the transportation of at least one vehicle from a departure point to a destination point. The automobile transportation management system disclosed in Patent Document 1 includes at least one tag device in which individual identification information for identifying each automobile is written, which is attached to each automobile to be transported, and which emits individual identification information by radio waves. transportation that is installed at at least one location between the departure point and the arrival point, and that acquires individual identification information emitted by radio waves from the tag device, and indicates that a vehicle equipped with a tag device that emits individual identification information has passed. It has at least one reader device that notifies progress information to a management center through a communication network, and a center device installed in the management center that receives transport progress information from each reader device and records it in a database.
特開２００４－３２３１９９号公報Japanese Patent Application Publication No. 2004-323199
　車両の輸送船が停泊する埠頭に設置された車両保管場では、製造元が異なる車両が同じ保管場内に保管されることがあり、ＲＦＩＤタグ搭載の車両とＲＦＩＤタグ非搭載の車両とが混在し得る。したがって、この種の車両保管場の出入口、又は、車両保管場と輸送船とを繋ぐ経路上に設けられた車両監視場所のような所定領域では、ＲＦＩＤタグ搭載の車両又はＲＦＩＤタグ非搭載の車両が通過し得る。 In vehicle storage areas installed at wharves where vehicle transport vessels dock, vehicles from different manufacturers may be stored in the same storage area, and vehicles equipped with RFID tags and vehicles without RFID tags may coexist. . Therefore, in predetermined areas such as the entrances and exits of this type of vehicle storage area or vehicle monitoring areas established on routes connecting vehicle storage areas and transport vessels, vehicles equipped with RFID tags or vehicles without RFID tags can pass.
　特許文献１に開示された自動車輸送管理システムは、輸送される全車両がＲＦＩＤタグ搭載の車両であることが前提となっている。したがって、特許文献１に開示された自動車輸送管理システムは、ＲＦＩＤタグ非搭載の車両が車両保管場の出入口等の所定領域を通過しても、当該車両を判別することが難しい。 The automobile transportation management system disclosed in Patent Document 1 is based on the premise that all vehicles being transported are equipped with RFID tags. Therefore, in the automobile transportation management system disclosed in Patent Document 1, even if a vehicle not equipped with an RFID tag passes through a predetermined area such as an entrance/exit of a vehicle storage lot, it is difficult to identify the vehicle.
　本発明は、上記に鑑みてなされたものであり、ＲＦＩＤタグの搭載有無に関わらず所定領域を通過する車両を正確に判別することが可能な通過車両判別システム及び通過車両判別方法を提供することを目的とする。 The present invention has been made in view of the above, and provides a passing vehicle discrimination system and a passing vehicle discrimination method that can accurately discriminate vehicles passing through a predetermined area regardless of whether or not they are equipped with an RFID tag. With the goal.
　上記課題を解決するために、本発明の通過車両判別システムは、所定領域を通過する車両の側面にレーザ光を照射し、前記側面にて反射された前記レーザ光の反射光を検出する光センサと、前記車両に搭載されたＲＦＩＤタグの情報を読み取る読取装置と、前記光センサの検出結果に基づいて前記所定領域を通過する前記車両を検知すると共に、前記読取装置の読み取り結果を取得する演算処理装置と、を備え、前記演算処理装置は、前記所定領域を通過する前記車両を検知したタイミングを基点とする所定時間以内に、前記読取装置が前記ＲＦＩＤタグの情報を読み取れた場合、当該タイミングに検知された前記車両を、当該ＲＦＩＤタグが搭載された前記車両であると判別し、前記所定時間以内に、前記読取装置が前記ＲＦＩＤタグの情報を読み取れなかった場合、当該タイミングに検知された前記車両を、当該ＲＦＩＤタグが搭載されていない前記車両であると判別することを特徴とする。 In order to solve the above problems, the passing vehicle discrimination system of the present invention includes an optical sensor that irradiates a side surface of a vehicle passing through a predetermined area with a laser beam and detects the reflected light of the laser beam reflected from the side surface. a reading device that reads information from an RFID tag mounted on the vehicle; and a calculation that detects the vehicle passing through the predetermined area based on the detection result of the optical sensor and obtains the reading result of the reading device. a processing device, and the arithmetic processing device is configured to read the information of the RFID tag within a predetermined time based on the timing at which the vehicle passing through the predetermined area is detected, the processing device reads the information from the RFID tag at the timing. The vehicle detected at the time is determined to be the vehicle equipped with the RFID tag, and if the reading device is unable to read the information of the RFID tag within the predetermined time, the vehicle detected at the time is determined to be the vehicle equipped with the RFID tag. The present invention is characterized in that the vehicle is determined to be the vehicle in which the RFID tag is not mounted.
　このような構成により、演算処理装置は、光センサの検出結果に基づいて検知された車両と、読取装置にて読み取られた情報を発信するＲＦＩＤタグが搭載された車両との対応関係を正確に把握することができる。そして、演算処理装置は、光センサの検出結果に基づいて検知された車両が、ＲＦＩＤタグ搭載の車両であるか、ＲＦＩＤタグ非搭載の車両であるかを、読取装置の読み取り結果に基づいて判別することができる。これにより、演算処理装置は、所定領域を通過するＲＦＩＤタグ非搭載の車両を正確に判別することができる。よって、通過車両判別システムは、ＲＦＩＤタグの搭載有無に関わらず所定領域を通過する車両を正確に判別することができる。 With this configuration, the processing unit can accurately determine the correspondence between the vehicle detected based on the detection result of the optical sensor and the vehicle equipped with the RFID tag that transmits the information read by the reader. can be grasped. Then, the arithmetic processing unit determines whether the detected vehicle based on the detection result of the optical sensor is a vehicle equipped with an RFID tag or a vehicle without an RFID tag, based on the reading result of the reading device. can do. Thereby, the arithmetic processing device can accurately determine a vehicle that is not equipped with an RFID tag and passes through the predetermined area. Therefore, the passing vehicle discrimination system can accurately discriminate vehicles passing through a predetermined area regardless of whether or not an RFID tag is installed.
　更に好ましい態様として、前記所定時間は、前記タイミングから遡った第１時間と、前記タイミングから経過した第２時間との合計である。 As a further preferred embodiment, the predetermined time is the sum of a first time that has elapsed from the timing and a second time that has elapsed from the timing.
　読取装置がＲＦＩＤタグから発信された情報を読み取り可能なエリア（以下「読取エリア」とも称する）は、光センサがレーザ光の反射光を検出可能なエリア（以下「検出エリア」とも称する）よりも、車両が所定領域を通過する方向（以下「通過方向」とも称する）において広い場合が多い。この場合、読取装置によりＲＦＩＤタグから発信された情報が読み取られたタイミングと、光センサの検出結果に基づいて車両が検知されたタイミングとの両タイミングが一致しないことがある。本発明では、上記の所定時間が、光センサの検出結果に基づいて検知されたタイミングから遡った第１時間と当該タイミングから経過した第２時間との合計である。これにより、演算処理装置は、両タイミングが一致しなくても、光センサの検出結果に基づいて検知された車両と、読取装置にて読み取られた情報を発信するＲＦＩＤタグを搭載した車両との対応関係を正確に把握することができる。よって、通過車両判別システムは、ＲＦＩＤタグの搭載有無に関わらず所定領域を通過する車両を更に正確に判別することができる。 The area where the reading device can read the information transmitted from the RFID tag (hereinafter also referred to as "reading area") is larger than the area where the optical sensor can detect the reflected light of the laser beam (hereinafter also referred to as "detection area"). , is often wide in the direction in which the vehicle passes through the predetermined area (hereinafter also referred to as the "passing direction"). In this case, the timing at which the reading device reads the information transmitted from the RFID tag and the timing at which the vehicle is detected based on the detection result of the optical sensor may not match. In the present invention, the above-mentioned predetermined time is the sum of the first time going back from the timing detected based on the detection result of the optical sensor and the second time elapsed from the timing. As a result, the processing unit can detect the vehicle detected based on the detection result of the optical sensor and the vehicle equipped with the RFID tag that transmits the information read by the reader, even if the timings do not match. Correspondence relationships can be accurately grasped. Therefore, the passing vehicle discrimination system can more accurately discriminate vehicles passing through a predetermined area regardless of whether or not an RFID tag is installed.
　更に好ましい態様として、前記演算処理装置は、前記光センサの前記検出結果に基づいて前記所定領域を通過する物体の通過方向の長さを算出し、算出された前記長さに基づいて前記物体が前記車両であることを検知し、検知された前記車両に対して、前記ＲＦＩＤタグが搭載された前記車両であるか否かの判別を行う。 In a further preferred embodiment, the arithmetic processing device calculates the length of the object passing through the predetermined area in the passing direction based on the detection result of the optical sensor, and determines whether the object passes through the predetermined area based on the calculated length. It is detected that the vehicle is the vehicle, and it is determined whether or not the detected vehicle is the vehicle on which the RFID tag is mounted.
　このような態様により、演算処理装置は、ＲＦＩＤタグ搭載の車両又はＲＦＩＤタグ非搭載の車両の何れかだけでなく、作業員のような車両以外の物体が所定領域を通過しても、これらを正確に判別することができる。よって、通過車両判別システムは、車両以外の物体が所定領域を通過しても、ＲＦＩＤタグの搭載有無に関わらず所定領域を通過する車両を正確に判別することができる。 With this aspect, the processing unit can detect not only a vehicle equipped with an RFID tag or a vehicle not equipped with an RFID tag, but also an object other than a vehicle such as a worker passing through a predetermined area. Can be accurately determined. Therefore, even if an object other than a vehicle passes through the predetermined area, the passing vehicle identification system can accurately identify the vehicle passing through the predetermined area regardless of whether or not it is equipped with an RFID tag.
　更に好ましい態様として、前記所定領域は、前記車両を輸送する輸送船が停泊する埠頭に設けられており、前記ＲＦＩＤタグの情報は、前記輸送船に船積み又は陸揚げされる前記車両の識別情報であり、前記演算処理装置は、前記車両の判別結果に基づいて前記船積み又は前記陸揚げされる前記車両の台数を算出する。 In a further preferred embodiment, the predetermined area is provided at a wharf where a transport ship that transports the vehicle is anchored, and the information on the RFID tag is identification information of the vehicle to be loaded onto or unloaded on the transport ship. , the arithmetic processing device calculates the number of the vehicles to be loaded or unloaded based on the vehicle discrimination result.
　このような態様により、演算処理装置は、所定領域が、船積み又は陸揚げされる車両が通過する領域であり、船積み又は陸揚げされる車両にＲＦＩＤタグ搭載の車両とＲＦＩＤタグ非搭載の車両とが混在していても、船積み又は陸揚げされる車両の台数を正確且つ容易に算出することができる。よって、通過車両判別システムは、ＲＦＩＤタグの搭載有無に関わらず所定領域を通過する車両を正確に判別して、船積み又は陸揚げされる車両を適切に管理することができる。 According to such an aspect, the arithmetic processing device is configured such that the predetermined area is an area through which vehicles to be loaded or unloaded pass, and the vehicles to be loaded or unloaded include a mixture of vehicles equipped with RFID tags and vehicles not equipped with RFID tags. Even if the number of vehicles to be loaded or unloaded can be accurately and easily calculated. Therefore, the passing vehicle identification system can accurately identify vehicles passing through a predetermined area regardless of whether or not they are equipped with RFID tags, and can appropriately manage vehicles being loaded or unloaded.
　更に好ましい態様として、通過車両判別システムは、前記演算処理装置による前記車両の判別結果を前記所定領域の周囲に報知する報知装置を更に備え、前記報知装置は、前記車両の判別結果のうち、少なくとも、前記ＲＦＩＤタグが搭載されていない前記車両の判別結果を報知する。 In a further preferred embodiment, the passing vehicle discrimination system further includes a notification device that notifies the surroundings of the predetermined area of the vehicle discrimination result by the arithmetic processing unit, and the notification device is configured to detect at least one of the vehicle discrimination results by the arithmetic processing unit. , to notify the determination result of the vehicle in which the RFID tag is not mounted.
　ＲＦＩＤタグ搭載の車両は、読取装置がＲＦＩＤタグの情報を読み取ることによって管理される。一方、ＲＦＩＤタグ非搭載の車両には、当該車両の識別情報を示すバーコードを記載した現品票等が搭載されている。ＲＦＩＤタグ非搭載の車両は、所定領域の周囲で作業する作業員がバーコードを読み取ることによって管理される。本発明では、報知装置が、ＲＦＩＤタグが搭載されていない車両の判別結果を報知する。これにより、作業員は、ＲＦＩＤタグ非搭載の車両が所定領域を通過することを容易に把握することができ、当該車両のバーコードを読み取ることができる。よって、通過車両判別システムは、ＲＦＩＤタグの搭載有無に関わらず所定領域を通過する車両を正確に判別して、ＲＦＩＤタグ非搭載の車両を適切に管理することができる。 Vehicles equipped with RFID tags are managed by a reading device reading information from the RFID tags. On the other hand, vehicles that are not equipped with RFID tags are equipped with an item tag or the like on which a barcode indicating identification information of the vehicle is written. Vehicles without RFID tags are managed by workers working around a predetermined area by reading barcodes. In the present invention, the notification device reports the determination result of a vehicle not equipped with an RFID tag. Thereby, the worker can easily understand that a vehicle not equipped with an RFID tag passes through the predetermined area, and can read the barcode of the vehicle. Therefore, the passing vehicle discrimination system can accurately discriminate vehicles passing through a predetermined area regardless of whether or not they are equipped with an RFID tag, and can appropriately manage vehicles that are not equipped with an RFID tag.
　更に好ましい態様として、前記光センサ、前記読取装置、前記演算処理装置及び前記報知装置は、移動体に設置されている。 As a further preferred embodiment, the optical sensor, the reading device, the arithmetic processing device, and the notification device are installed in a moving body.
　このような態様により、通過車両判別システムは、光センサ、読取装置、演算処理装置及び報知装置を、屋外の不特定な場所に即時設置し即時撤去することができる。よって、通過車両判別システムは、ＲＦＩＤタグの搭載有無に関わらず通過車両を正確に判別可能なシステムを、様々な場所に容易に適用することができる。 With this aspect, the passing vehicle identification system can immediately install the optical sensor, the reading device, the arithmetic processing device, and the notification device in an unspecified outdoor location and immediately remove them. Therefore, the passing vehicle identification system can be easily applied to various locations, and can accurately identify passing vehicles regardless of whether or not they are equipped with RFID tags.
　また、本発明の通過車両判別方法は、所定領域を通過する車両の側面にレーザ光を照射し、前記側面にて反射された前記レーザ光の反射光を検出することと、前記車両に搭載されたＲＦＩＤタグの情報を読み取ることと、前記反射光の検出結果に基づいて前記所定領域を通過する前記車両を検知することと、前記所定領域を通過する前記車両を検知したタイミングを基点とする所定時間以内に、前記ＲＦＩＤタグの情報を読み取れた場合、当該タイミングに検知された前記車両を、当該ＲＦＩＤタグが搭載された前記車両であると判別することと、前記所定時間以内に、前記ＲＦＩＤタグの情報を読み取れなかった場合、当該タイミングに検知された前記車両を、当該ＲＦＩＤタグが搭載されていない前記車両であると判別することと、を有する。 Further, the passing vehicle identification method of the present invention includes the steps of: irradiating a laser beam onto a side surface of a vehicle passing through a predetermined area; and detecting reflected light of the laser beam reflected from the side surface; detecting the vehicle passing through the predetermined area based on the detection result of the reflected light; and detecting the vehicle passing through the predetermined area based on the timing at which the vehicle passing through the predetermined area is detected. If the information of the RFID tag can be read within the predetermined time, the vehicle detected at the timing is determined to be the vehicle equipped with the RFID tag, and the RFID tag is read within the predetermined time. If the information cannot be read, the vehicle detected at the timing is determined to be the vehicle in which the RFID tag is not mounted.
　このような構成により、通過車両判別方法は、反射光の検出結果に基づいて検知された車両と、読み取られた情報を発信するＲＦＩＤタグを搭載した車両との対応関係を正確に把握することができる。そして、通過車両判別方法は、反射光の検出結果に基づいて検知された車両が、ＲＦＩＤタグ搭載の車両であるか、ＲＦＩＤタグ非搭載の車両であるかを、ＲＦＩＤタグの情報の読み取り結果に基づいて判別することができる。これにより、通過車両判別方法は、所定領域を通過するＲＦＩＤタグ非搭載の車両を正確に判別することができる。よって、通過車両判別方法は、ＲＦＩＤタグの搭載有無に関わらず所定領域を通過する車両を正確に判別することができる。 With this configuration, the passing vehicle identification method can accurately grasp the correspondence relationship between a vehicle detected based on the detection result of reflected light and a vehicle equipped with an RFID tag that transmits the read information. can. The passing vehicle identification method then determines whether the detected vehicle is a vehicle equipped with an RFID tag or a vehicle without an RFID tag based on the detection result of the reflected light. It can be determined based on Thereby, the passing vehicle discrimination method can accurately discriminate a vehicle that is not equipped with an RFID tag and passes through the predetermined area. Therefore, the passing vehicle discrimination method can accurately discriminate a vehicle passing through a predetermined area regardless of whether an RFID tag is installed or not.
　本発明によれば、所定領域を通過する車両がＲＦＩＤタグ搭載又は非搭載の対象車両であるかを正確に判別することができる。 According to the present invention, it is possible to accurately determine whether a vehicle passing through a predetermined area is a target vehicle equipped with an RFID tag or not.
本実施形態の通過車両判別システムが適用される所定領域を説明する図。FIG. 2 is a diagram illustrating a predetermined area to which the passing vehicle discrimination system of the present embodiment is applied. 図１に示す通過車両判別システムの外観構成を示す模式図。FIG. 2 is a schematic diagram showing the external configuration of the passing vehicle identification system shown in FIG. 1. FIG. 図２に示す通過車両判別システムの機能的構成を示す図。3 is a diagram showing the functional configuration of the passing vehicle discrimination system shown in FIG. 2. FIG. 図３に示す演算処理装置によって行われる処理を説明する図。4 is a diagram illustrating processing performed by the arithmetic processing device shown in FIG. 3. FIG. 図３に示す演算処理装置によって行われる通過車両判別処理を示すフローチャート（その１）。4 is a flowchart (part 1) showing a passing vehicle discrimination process performed by the arithmetic processing device shown in FIG. 3; 図３に示す演算処理装置によって行われる通過車両判別処理を示すフローチャート（その２）。4 is a flowchart (part 2) showing a passing vehicle discrimination process performed by the arithmetic processing device shown in FIG. 3;
　以下、本発明の実施形態について図面を用いて説明する。各実施形態において同一の符号を付された構成については、特に言及しない限り、各実施形態において同様の機能を有し、その説明を省略する。 Hereinafter, embodiments of the present invention will be described using the drawings. Structures designated by the same reference numerals in each embodiment have the same functions in each embodiment unless otherwise mentioned, and their explanation will be omitted.
　図１は、本実施形態の通過車両判別システム１が適用される所定領域Ａを説明する図である。図２は、図１に示す通過車両判別システム１の外観構成を示す模式図である。図３は、図２に示す通過車両判別システム１の機能的構成を示す図である。図４は、図３に示す演算処理装置４１によって行われる処理を説明する図である。 FIG. 1 is a diagram illustrating a predetermined area A to which a passing vehicle discrimination system 1 of this embodiment is applied. FIG. 2 is a schematic diagram showing the external configuration of the passing vehicle identification system 1 shown in FIG. 1. As shown in FIG. FIG. 3 is a diagram showing the functional configuration of the passing vehicle discrimination system 1 shown in FIG. 2. FIG. 4 is a diagram illustrating the processing performed by the arithmetic processing device 41 shown in FIG. 3.
　車両の製造工場の近隣には、車両を販売所や埠頭に輸送する陸送車に積み込まれる車両等を保管するモータープール等の車両保管場が設置されている。また、車両を輸送する輸送船が停泊する埠頭には、輸送船に船積みされる車両、又は、輸送船から陸揚げされる車両を保管するモータープール等の車両保管場が設置されている。 In the vicinity of vehicle manufacturing plants, vehicle storage areas such as motor pools are set up to store vehicles that are loaded onto land transportation vehicles that transport vehicles to sales offices and wharves. In addition, a vehicle storage area such as a motor pool is installed at a wharf where a transport ship that transports vehicles is anchored, such as a motor pool for storing vehicles that are loaded onto the transport ship or vehicles that are unloaded from the transport ship.
　通過車両判別システム１は、車両保管場の出入口、又は、陸送車若しくは輸送船と車両保管場とを繋ぐ経路上に設けられた車両監視場所のような、所定領域Ａを通過する車両を判別するシステムである。本実施形態では、通過車両判別システム１が適用される所定領域Ａとして、輸送船と車両保管場とを繋ぐ経路上に設けられた車両監視場所を例に挙げて説明する。 The passing vehicle identification system 1 identifies vehicles passing through a predetermined area A, such as an entrance/exit of a vehicle storage area or a vehicle monitoring location provided on a route connecting a land transport vehicle or a transport ship to a vehicle storage area. It is a system. In this embodiment, a vehicle monitoring location provided on a route connecting a transport ship and a vehicle storage yard will be exemplified as the predetermined area A to which the passing vehicle identification system 1 is applied.
　図１には、埠頭に設置された車両保管場から輸送船（図１の符号Ｓ）に車両が船積みされる様子が示されている。所定領域Ａを通過する物体としては、ＲＦＩＤタグ搭載の輸送対象の車両（図１の符号Ｖ１）と、ＲＦＩＤタグ非搭載の輸送対象の車両（図１の符号Ｖ２）とがある。これらの輸送対象の車両は、輸送船に船積み又は陸揚げされる車両である。輸送対象の車両の車種、形状、大きさ及び色等は、特に限定されない。 FIG. 1 shows how vehicles are loaded onto a transport ship (symbol S in FIG. 1) from a vehicle storage area installed at a wharf. Objects that pass through the predetermined area A include a vehicle to be transported that is equipped with an RFID tag (represented by V1 in FIG. 1) and a vehicle to be transported that is not equipped with an RFID tag (represented by V2 in FIG. 1). These vehicles to be transported are vehicles that are loaded onto a transport ship or unloaded. The model, shape, size, color, etc. of the vehicle to be transported are not particularly limited.
　所定領域Ａを物体が通過する方向（「通過方向」とも称する）は、輸送船に向かう船積み方向と輸送船から離れる陸揚げ方向の２つがある。所定領域Ａを物体が通過するタイミングは、不定期である。所定領域Ａを通過する物体の速度は、０ｋｍ／ｈ以上約４０ｋｍ／ｈ以下であってもよく、一定ではない。所定領域Ａを通過する車両の車間距離は、７０ｃｍ以上であってもよく、一定ではない。 There are two directions in which an object passes through the predetermined area A (also referred to as a "passing direction"): a loading direction toward a transport ship, and a landing direction away from a transport ship. The timing at which an object passes through the predetermined area A is irregular. The speed of the object passing through the predetermined area A may be greater than or equal to 0 km/h and less than or equal to approximately 40 km/h, and is not constant. The distance between vehicles passing through the predetermined area A may be 70 cm or more and is not constant.
　また、所定領域Ａを通過する物体として、所定領域Ａの周囲で作業する作業員（図１の符号Ｗ）と、当該作業員が使用する作業員用バス（図１の符号Ｖ３）が考えられる。作業員用バスは、輸送対象外の車両である。作業員用バスには、作業員用バスであることを示すＲＦＩＣタグが搭載されており、輸送対象の車両に搭載されたＲＦＩＤタグとは明確に判別可能である。本実施形態では、所定領域Ａを通過する物体として、ＲＦＩＤタグ搭載の輸送対象の車両、ＲＦＩＤタグ非搭載の輸送対象の車両、作業員用バス、及び、作業員を例に挙げて説明する。但し、所定領域Ａを通過する物体としては、少なくとも、ＲＦＩＤタグ搭載の輸送対象の車両、及び、ＲＦＩＤタグ非搭載の輸送対象の車両が存在すればよく、特に限定されない。 Furthermore, as objects passing through the predetermined area A, there can be considered a worker working around the predetermined area A (symbol W in FIG. 1) and a worker bus (symbol V3 in FIG. 1) used by the worker. . The worker bus is a vehicle that is not subject to transportation. The worker bus is equipped with an RFIC tag indicating that it is a worker bus, and can be clearly distinguished from the RFID tag mounted on the vehicle to be transported. In the present embodiment, objects passing through the predetermined area A will be described using as examples a vehicle to be transported equipped with an RFID tag, a vehicle to be transported without an RFID tag, a bus for workers, and a worker. However, the objects passing through the predetermined area A are not particularly limited, as long as there are at least a vehicle to be transported equipped with an RFID tag and a vehicle to be transported without an RFID tag.
　通過車両判別システム１は、通過方向に延びる所定領域Ａの一側方に配置され、両方の側方には配置されない。通過車両判別システム１は、全天候に対応可能である。通過車両判別システム１は、車両又はロボット等の移動体１０に設置されている。本実施形態では、移動体１０として、図２に示すように車両を例に挙げて説明する。 The passing vehicle identification system 1 is arranged on one side of the predetermined area A extending in the passing direction, but not on both sides. The passing vehicle identification system 1 can be used in all weather conditions. The passing vehicle discrimination system 1 is installed in a moving object 10 such as a vehicle or a robot. In this embodiment, a vehicle will be described as an example of the moving body 10, as shown in FIG.
　通過車両判別システム１は、図２及び図３に示すように、光センサ２０と、読取装置３０と、コンピュータ４０と、報知装置５０と、を備える。 The passing vehicle identification system 1 includes an optical sensor 20, a reading device 30, a computer 40, and a notification device 50, as shown in FIGS. 2 and 3.
　光センサ２０、読取装置３０、コンピュータ４０及び報知装置５０は、移動体１０に設置されている。これにより、通過車両判別システム１は、光センサ２０、読取装置３０、コンピュータ４０及び報知装置５０を、屋外の不特定な場所に即時設置し即時撤去することができる。よって、通過車両判別システム１は、ＲＦＩＤタグの搭載有無に関わらず通過車両を正確に判別可能なシステムを、様々な場所に容易に適用することができる。 The optical sensor 20, the reading device 30, the computer 40, and the notification device 50 are installed on the moving body 10. Thereby, the passing vehicle identification system 1 can immediately install the optical sensor 20, the reading device 30, the computer 40, and the notification device 50 in an unspecified outdoor location and immediately remove them. Therefore, the passing vehicle identification system 1 can be easily applied to various locations as a system that can accurately discriminate passing vehicles regardless of whether or not they are equipped with RFID tags.
　光センサ２０は、所定領域Ａを通過する物体の側面にレーザ光を照射し、当該側面にて反射されたレーザ光の反射光を検出するセンサである。光センサ２０は、例えばＬｉＤＡＲによって構成される。光センサ２０は、所定領域Ａの一側方から所定領域Ａに向けてレーザ光が水平に照射されるような姿勢で取り付けられている。光センサ２０は、レーザ光を反射する反射板を所定領域Ａの他の側方に設置することを必要としない。本実施形態の光センサ２０は、移動体１０の後部に固定されたヒッチキャリア１２の上下方向に延びる支持部材１３に取り付けられている。 The optical sensor 20 is a sensor that irradiates a side surface of an object passing through a predetermined area A with a laser beam and detects the reflected light of the laser beam reflected from the side surface. The optical sensor 20 is configured by, for example, LiDAR. The optical sensor 20 is attached in such a position that laser light is horizontally irradiated toward the predetermined region A from one side of the predetermined region A. The optical sensor 20 does not require a reflective plate that reflects laser light to be installed on the other side of the predetermined area A. The optical sensor 20 of this embodiment is attached to a support member 13 extending in the vertical direction of a hitch carrier 12 fixed to the rear part of the moving body 10.
　読取装置３０は、所定領域Ａを通過する車両に搭載されたＲＦＩＤタグの情報を読み取る装置である。読取装置３０は、アンテナ３１と、リーダ３２と、を有する。アンテナ３１は、ＲＦＩＤタグから発信された電波を受信する。アンテナ３１は、所定領域Ａの一側方から所定領域Ａを向く姿勢で支持部材１３に取り付けられている。リーダ３２は、アンテナ３１により受信された電波から、ＲＦＩＤタグの情報を読み取る。リーダ３２は、ＲＦＩＤタグの情報を読み取ったタイミングの時刻情報を、当該ＲＦＩＤタグの情報に付加して、リーダ３２の記憶領域に記憶する。ＲＦＩＤタグの情報は、輸送対象の車両の識別情報、又は、作業員用バスの識別情報である。リーダ３２は、ＲＦＩＤタグの情報における読み取り結果をコンピュータ４０に送信する。リーダ３２は、移動体１０の内部に配置されていてもよいし、ヒッチキャリア１２に取り付けられていてもよい。 The reading device 30 is a device that reads information from RFID tags mounted on vehicles passing through the predetermined area A. The reading device 30 includes an antenna 31 and a reader 32. Antenna 31 receives radio waves transmitted from the RFID tag. The antenna 31 is attached to the support member 13 so as to face the predetermined region A from one side of the predetermined region A. The reader 32 reads the information of the RFID tag from the radio waves received by the antenna 31. The reader 32 adds time information of the timing at which the information of the RFID tag is read to the information of the RFID tag, and stores the information in the storage area of the reader 32 . The information on the RFID tag is identification information of a vehicle to be transported or identification information of a worker bus. The reader 32 transmits the reading result of the information of the RFID tag to the computer 40 . The leader 32 may be placed inside the moving body 10 or may be attached to the hitch carrier 12.
　コンピュータ４０は、光センサ２０、読取装置３０及び報知装置５０の各動作を制御して、通過車両判別システム１の機能を実現する。コンピュータ４０は、モバイル型のＰＣ又は移動体１０に組み込まれたＰＣによって構成される。コンピュータ４０は、演算処理装置４１を有する。 The computer 40 controls the operations of the optical sensor 20, the reading device 30, and the notification device 50 to realize the functions of the passing vehicle identification system 1. The computer 40 is configured by a mobile PC or a PC built into the mobile object 10. Computer 40 has an arithmetic processing unit 41 .
　演算処理装置４１は、ＣＰＵ、ＲＯＭ及びＲＡＭ等によって構成され、ＲＯＭに記憶されたプログラムをＣＰＵが実行することによって、コンピュータ４０の機能を実現する。特に、演算処理装置４１は、光センサ２０の検出結果に基づいて所定領域Ａを通過する物体を検知すると共に、読取装置３０の読み取り結果を取得する。 The arithmetic processing unit 41 is composed of a CPU, ROM, RAM, etc., and realizes the functions of the computer 40 by the CPU executing a program stored in the ROM. In particular, the arithmetic processing unit 41 detects an object passing through the predetermined area A based on the detection result of the optical sensor 20, and acquires the reading result of the reading device 30.
　具体的には、演算処理装置４１は、光センサ２０の検出結果に基づいて所定領域Ａを通過する物体の通過方向の長さを算出し、算出された当該長さに基づいて当該物体が車両であることを検知する。詳細には、演算処理装置４１は、算出された当該長さが閾値（例えば７００ｍｍ）以上である場合、当該物体が車両であることを検知し、算出された当該長さが閾値未満である場合、当該物体が車両以外の物体であることを検知する。 Specifically, the arithmetic processing unit 41 calculates the length of the object passing through the predetermined area A in the passing direction based on the detection result of the optical sensor 20, and based on the calculated length, the calculation processing unit 41 calculates the length of the object in the passing direction. Detect that. Specifically, the arithmetic processing unit 41 detects that the object is a vehicle when the calculated length is equal to or greater than a threshold (for example, 700 mm), and when the calculated length is less than the threshold , detects that the object is other than a vehicle.
　これにより、演算処理装置４１は、ＲＦＩＤタグ搭載の輸送対象の車両又はＲＦＩＤタグ非搭載の輸送対象の車両の何れかだけでなく、作業員のような車両以外の物体が所定領域Ａを通過しても、これらを正確に判別することができる。よって、通過車両判別システム１は、車両以外の物体が所定領域Ａを通過しても、ＲＦＩＤタグの搭載有無に関わらず所定領域Ａを通過する車両を正確に判別することができる。 As a result, the processing unit 41 detects whether not only a vehicle to be transported equipped with an RFID tag or a vehicle to be transported without an RFID tag, but also an object other than a vehicle such as a worker passes through the predetermined area A. However, these can be accurately identified. Therefore, even if an object other than a vehicle passes through the predetermined area A, the passing vehicle identification system 1 can accurately identify the vehicle passing through the predetermined area A regardless of whether an RFID tag is installed or not.
　演算処理装置４１は、検知された車両に対して、ＲＦＩＤタグ搭載の輸送対象の車両であるか、ＲＦＩＤタグ非搭載の輸送対象の車両であるか、作業員用バスであるかの判別を行う。詳細には、演算処理装置４１は、図４に示すように、所定領域Ａを通過する車両を検知したタイミングを基点とする所定時間以内に、読取装置３０がＲＦＩＤタグの情報を読み取れた場合、当該タイミングに検知された車両を、当該ＲＦＩＤタグが搭載された車両であると判別する。一方、演算処理装置４１は、当該所定時間以内に、読取装置３０がＲＦＩＤタグの情報を読み取れなかった場合、当該タイミングに検知された車両を、当該ＲＦＩＤタグが搭載されていない車両であると判別する。 The arithmetic processing unit 41 determines whether the detected vehicle is a vehicle equipped with an RFID tag and to be transported, a vehicle not equipped with an RFID tag and to be transported, or a worker bus. . Specifically, as shown in FIG. 4, if the reading device 30 is able to read the information on the RFID tag within a predetermined time based on the timing at which a vehicle passing through the predetermined area A is detected, The vehicle detected at the timing is determined to be a vehicle equipped with the RFID tag. On the other hand, if the reading device 30 is unable to read the information of the RFID tag within the predetermined time, the arithmetic processing unit 41 determines that the vehicle detected at the timing is a vehicle in which the RFID tag is not installed. do.
　これにより、演算処理装置４１は、光センサ２０の検出結果に基づいて検知された車両と、読取装置３０にて読み取られた情報を発信するＲＦＩＤタグが搭載された車両との対応関係を正確に把握することができる。そして、演算処理装置４１は、光センサ２０の検出結果に基づいて検知された車両が、ＲＦＩＤタグ搭載の車両であるか、ＲＦＩＤタグ非搭載の車両であるかを、読取装置３０の読み取り結果に基づいて判別することができる。これにより、演算処理装置４１は、所定領域Ａを通過するＲＦＩＤタグ非搭載の車両を正確に判別することができる。よって、通過車両判別システム１は、ＲＦＩＤタグの搭載有無に関わらず所定領域Ａを通過する車両を正確に判別することができる。 Thereby, the arithmetic processing unit 41 can accurately determine the correspondence relationship between the vehicle detected based on the detection result of the optical sensor 20 and the vehicle equipped with the RFID tag that transmits the information read by the reading device 30. can be grasped. Then, the arithmetic processing unit 41 determines whether the detected vehicle is an RFID tag-equipped vehicle or a non-RFID tag-equipped vehicle based on the detection result of the optical sensor 20 based on the reading result of the reading device 30. It can be determined based on Thereby, the arithmetic processing unit 41 can accurately determine a vehicle passing through the predetermined area A that is not equipped with an RFID tag. Therefore, the passing vehicle discrimination system 1 can accurately discriminate a vehicle passing through the predetermined area A regardless of whether an RFID tag is installed or not.
　そして、演算処理装置４１は、上記の所定時間以内に読取装置３０がＲＦＩＤタグの情報を読み取れた場合、当該ＲＦＩＤタグの情報から、検知された車両が、ＲＦＩＤタグ搭載の輸送対象の車両であるか、作業員用バスであるかを判別する。例えば、コンピュータ４０は、作業員用バスの識別情報を予め記憶する記憶装置を有する。演算処理装置４１は、当該ＲＦＩＤタグの情報と、当該記憶装置に記憶された情報とを照合することによって、検知された車両が、作業員用バスであるか否かを判別することができる。更に、演算処理装置４１は、コンピュータ４０の無線通信装置を介して、輸送対象の車両を管理するサーバ装置と通信可能に接続されてもよい。演算処理装置４１は、当該ＲＦＩＤタグの情報をサーバ装置に送信することができる。サーバ装置は、当該ＲＦＩＤタグの情報と、輸送対象の車両の識別情報が登録されたデータベースの情報と照合し、照合結果をコンピュータ４０に送信する。演算処理装置４１は、サーバ装置から送信された照合結果を確認することによって、検知された車両が、ＲＦＩＤタグ搭載の輸送対象の車両であるか否かを判別することができる。なお、輸送対象の車両の識別情報が登録されたデータベースは、コンピュータ４０と一体的に組み込まれていてもよい。また、サーバ装置は、輸送過程における車両の所在位置及び車両の状態、並びに、車両保管場での保管台数等を管理する。 Then, if the reading device 30 is able to read the information of the RFID tag within the above-mentioned predetermined time, the arithmetic processing device 41 determines that the detected vehicle is the vehicle to be transported equipped with the RFID tag based on the information of the RFID tag. or a worker bus. For example, the computer 40 has a storage device that stores identification information of worker buses in advance. The arithmetic processing unit 41 can determine whether the detected vehicle is a worker bus by comparing the information of the RFID tag with the information stored in the storage device. Furthermore, the arithmetic processing device 41 may be communicably connected to a server device that manages a vehicle to be transported via a wireless communication device of the computer 40. The arithmetic processing device 41 can transmit information on the RFID tag to the server device. The server device compares the information of the RFID tag with information in a database in which identification information of the vehicle to be transported is registered, and transmits the comparison result to the computer 40. The processing unit 41 can determine whether the detected vehicle is a vehicle equipped with an RFID tag and to be transported by checking the verification result sent from the server device. Note that the database in which identification information of vehicles to be transported is registered may be integrated with the computer 40. Further, the server device manages the location and condition of the vehicle during the transportation process, the number of vehicles stored in the vehicle storage area, and the like.
　これにより、演算処理装置４１は、ＲＦＩＤタグ搭載の輸送対象の車両又はＲＦＩＤタグ非搭載の輸送対象の車両の何れかだけでなく、輸送対象外の車両である作業員用バスが所定領域Ａを通過しても、これらを正確に判別することができる。よって、通過車両判別システム１は、作業員用バスが所定領域Ａを通過しても、ＲＦＩＤタグの搭載有無に関わらず所定領域Ａを通過する車両を正確に判別することができる。 As a result, the processing unit 41 detects whether not only a vehicle to be transported that is equipped with an RFID tag or a vehicle to be transported that is not equipped with an RFID tag, but also a worker bus, which is a vehicle that is not to be transported, is traveling in the predetermined area A. Even if they pass through, they can be accurately identified. Therefore, even if the worker bus passes through the predetermined area A, the passing vehicle identification system 1 can accurately identify the vehicle passing through the predetermined area A regardless of whether or not it is equipped with an RFID tag.
　ここで、上記の所定時間は、図４に示すように、所定領域Ａを通過する車両を検知したタイミングから遡った第１時間と、当該タイミングから経過した第２時間との合計である。読取装置３０、ＲＦＩＤタグから発信された情報を読み取り可能な読取エリアは、光センサ２０がレーザ光の反射光を検出可能な検出エリアよりも、車両の通過方向において広い場合が多い。この場合、読取装置３０によりＲＦＩＤタグから発信された情報が読み取られたタイミングと、光センサ２０の検出結果に基づいて車両が検知されたタイミングとの両タイミングが一致しないことがある。 Here, as shown in FIG. 4, the above-mentioned predetermined time is the sum of the first time that goes back from the timing when the vehicle passing through the predetermined area A was detected, and the second time that elapsed from that timing. The reading area where the reading device 30 can read the information transmitted from the RFID tag is often wider in the vehicle passing direction than the detection area where the optical sensor 20 can detect the reflected light of the laser beam. In this case, the timing at which the reading device 30 reads the information transmitted from the RFID tag and the timing at which the vehicle is detected based on the detection result of the optical sensor 20 may not match.
　演算処理装置４１は、上記の所定時間が第１時間と第２時間との合計であることにより、両タイミングが一致しなくても、光センサ２０の検出結果に基づいて検知された車両と、読取装置３０にて読み取られた情報を発信するＲＦＩＤタグを搭載した車両との対応関係を正確に把握することができる。よって、通過車両判別システム１は、ＲＦＩＤタグの搭載有無に関わらず所定領域Ａを通過する車両を更に正確に判別することができる。 Since the predetermined time is the sum of the first time and the second time, the arithmetic processing unit 41 can detect the vehicle detected based on the detection result of the optical sensor 20 even if the two timings do not match. It is possible to accurately grasp the correspondence with a vehicle equipped with an RFID tag that transmits the information read by the reading device 30. Therefore, the passing vehicle discrimination system 1 can more accurately discriminate vehicles passing through the predetermined area A regardless of whether or not an RFID tag is installed.
　また、演算処理装置４１は、所定領域Ａを通過する車両の判別結果に基づいて、船積み又は陸揚げされる輸送対象の車両の台数を算出する。 Furthermore, the arithmetic processing unit 41 calculates the number of vehicles to be shipped or unloaded based on the determination result of vehicles passing through the predetermined area A.
　これにより、演算処理装置４１は、所定領域Ａが、船積み又は陸揚げされる車両が通過する領域であり、船積み又は陸揚げされる車両にＲＦＩＤタグ搭載の車両とＲＦＩＤタグ非搭載の車両とが混在していても、船積み又は陸揚げされる車両の台数を正確且つ容易に算出することができる。よって、通過車両判別システム１は、ＲＦＩＤタグの搭載有無に関わらず所定領域Ａを通過する車両を正確に判別して、船積み又は陸揚げされる車両を適切に管理することができる。 Thereby, the arithmetic processing unit 41 determines that the predetermined area A is an area through which vehicles to be loaded or unloaded pass, and the vehicles to be loaded or unloaded include vehicles equipped with RFID tags and vehicles without RFID tags. Even if the number of vehicles to be loaded or unloaded can be accurately and easily calculated. Therefore, the passing vehicle discrimination system 1 can accurately discriminate vehicles passing through the predetermined area A regardless of whether or not they are equipped with RFID tags, and can appropriately manage vehicles to be loaded or unloaded.
　演算処理装置４１は、所定領域Ａを通過する車両の判別結果に応じて、報知装置５０の動作を制御する。本実施形態の報知装置５０は、移動体１０の上部に固定されたルーフキャリア１１に取り付けられている。 The arithmetic processing device 41 controls the operation of the notification device 50 according to the determination result of vehicles passing through the predetermined area A. The notification device 50 of this embodiment is attached to a roof carrier 11 fixed to the upper part of the moving body 10.
　具体的には、演算処理装置４１は、所定領域Ａを通過する車両が、ＲＦＩＤタグ搭載の輸送対象の車両である場合、当該車両が通過することを所定領域Ａの周囲に報知するよう報知装置５０を制御することができる。この場合、例えば、報知装置５０は、第１ランプ５１を点灯させると共に、第１ブザー５２から音を発生させることができる。 Specifically, when the vehicle passing through the predetermined area A is a vehicle to be transported that is equipped with an RFID tag, the arithmetic processing unit 41 controls a notification device to notify people around the predetermined area A that the vehicle is passing. 50 can be controlled. In this case, for example, the notification device 50 can cause the first lamp 51 to light up and the first buzzer 52 to generate a sound.
　一方、演算処理装置４１は、所定領域Ａを通過する車両が、ＲＦＩＤタグ非搭載の輸送対象の車両である場合、当該車両が通過することを所定領域Ａの周囲に報知するよう報知装置５０を制御する。この場合、例えば、報知装置５０は、第２ランプ５３を点灯させると共に、第２ブザー５４から音を発生させる。 On the other hand, when the vehicle passing through the predetermined area A is a vehicle to be transported that is not equipped with an RFID tag, the arithmetic processing unit 41 causes the notification device 50 to notify the surroundings of the predetermined area A that the vehicle is passing. Control. In this case, for example, the notification device 50 lights up the second lamp 53 and causes the second buzzer 54 to generate a sound.
　ＲＦＩＤタグ搭載の輸送対象の車両は、読取装置３０がＲＦＩＤタグの情報を読み取ることによって管理される。一方、ＲＦＩＤタグ非搭載の輸送対象の車両には、当該車両の識別情報を示すバーコードを記載した現品票等が搭載されている。ＲＦＩＤタグ非搭載の輸送対象の車両は、作業員がバーコードを読み取ることによって管理される。 Vehicles to be transported equipped with RFID tags are managed by the reading device 30 reading information from the RFID tags. On the other hand, a vehicle to be transported that is not equipped with an RFID tag is equipped with an item tag or the like on which a barcode indicating identification information of the vehicle is written. Vehicles to be transported that are not equipped with RFID tags are managed by workers reading barcodes.
　報知装置５０は、少なくとも、ＲＦＩＤタグ非搭載の輸送対象の車両の判別結果を報知する。これにより、所定領域Ａの周囲で作業する作業員は、ＲＦＩＤタグ非搭載の輸送対象の車両が所定領域を通過することを容易に把握することができ、当該車両のバーコードを読み取ることができる。よって、通過車両判別システム１は、ＲＦＩＤタグの搭載有無に関わらず所定領域Ａを通過する車両を正確に判別して、ＲＦＩＤタグ非搭載の車両を適切に管理することができる。 The notification device 50 notifies at least the determination result of a vehicle to be transported that is not equipped with an RFID tag. As a result, workers working around the predetermined area A can easily understand that a vehicle to be transported that is not equipped with an RFID tag passes through the predetermined area, and can read the barcode of the vehicle. . Therefore, the passing vehicle discrimination system 1 can accurately discriminate vehicles passing through the predetermined area A regardless of whether or not they are equipped with an RFID tag, and can appropriately manage vehicles that are not equipped with an RFID tag.
　なお、演算処理装置４１は、作業員用バス又は作業員が所定領域Ａを通過する場合、ランプ５１，５３を点灯させず、且つ、ブザー５２，５４から音を発生させないように、報知装置５０を制御することができる。但し、演算処理装置４１は所定領域Ａを通過する物体の判別結果に応じて報知態様が変更されるよう報知装置５０の動作を制御すればよく、報知装置５０の構成及び報知態様は特に限定されない。 Note that, when the worker bus or the worker passes through the predetermined area A, the arithmetic processing unit 41 controls the notification device 50 so that the lamps 51 and 53 are not lit and the buzzers 52 and 54 do not emit sound. can be controlled. However, the arithmetic processing device 41 only needs to control the operation of the notification device 50 so that the notification mode is changed according to the determination result of an object passing through the predetermined area A, and the configuration and notification mode of the notification device 50 are not particularly limited. .
　図５は、図３に示す演算処理装置４１によって行われる通過車両判別処理を示すフローチャート（その１）である。図６は、図３に示す演算処理装置４１によって行われる通過車両判別処理を示すフローチャート（その２）である。 FIG. 5 is a flowchart (part 1) showing the passing vehicle discrimination process performed by the arithmetic processing unit 41 shown in FIG. 3. FIG. 6 is a flowchart (part 2) showing the passing vehicle discrimination process performed by the arithmetic processing device 41 shown in FIG.
　演算処理装置４１は、図５に示す処理と図６に示す処理とを並行して行う。演算処理装置４１は、図５及び図６に示す各処理を所定周期で繰り返し行う。以下では、図５に示す処理について説明した後に、図６に示す処理について説明する。 The arithmetic processing unit 41 performs the processing shown in FIG. 5 and the processing shown in FIG. 6 in parallel. The arithmetic processing unit 41 repeatedly performs each process shown in FIGS. 5 and 6 at a predetermined period. Below, after explaining the process shown in FIG. 5, the process shown in FIG. 6 will be explained.
　ステップＳ１において、演算処理装置４１は、ＲＦＩＤタグから発信された電波を受信したか否かを判定するよう読取装置３０を制御する。読取装置３０が当該電波を受信した場合、演算処理装置４１は、ステップＳ２に移行する。読取装置３０が当該電波を受信していない場合、演算処理装置４１は、図５に示す処理を終了する。 In step S1, the arithmetic processing unit 41 controls the reading device 30 to determine whether or not radio waves transmitted from the RFID tag have been received. When the reading device 30 receives the radio wave, the processing device 41 moves to step S2. If the reading device 30 is not receiving the radio wave, the arithmetic processing device 41 ends the process shown in FIG. 5.
　ステップＳ２において、演算処理装置４１は、受信した電波からＲＦＩＤタグの情報を読み取るよう読取装置３０を制御する。読取装置３０は、読み取られたＲＦＩＤタグの情報に、ＲＦＩＤタグの情報を読み取ったタイミングの時刻情報を付加して、読取装置３０の記憶領域に記憶する。 In step S2, the processing unit 41 controls the reading device 30 to read the information of the RFID tag from the received radio waves. The reading device 30 adds time information of the timing at which the RFID tag information was read to the read RFID tag information, and stores the added information in the storage area of the reading device 30.
　ステップＳ３において、演算処理装置４１は、読み取られたＲＦＩＤタグの情報をコンピュータ４０に送信するよう読取装置３０を制御する。演算処理装置４１は、コンピュータ４０に送信されたＲＦＩＤタグの情報を、演算処理装置４１の所定の記憶領域に記憶する。その後、演算処理装置４１は、図５に示す処理を終了する。 In step S3, the arithmetic processing unit 41 controls the reading device 30 to transmit the information of the read RFID tag to the computer 40. The arithmetic processing device 41 stores the RFID tag information transmitted to the computer 40 in a predetermined storage area of the arithmetic processing device 41 . Thereafter, the arithmetic processing unit 41 ends the process shown in FIG.
　ステップＳ１１において、演算処理装置４１は、所定領域Ａを通過する物体の側面にレーザ光を照射するよう光センサ２０を制御する。 In step S11, the processing unit 41 controls the optical sensor 20 to irradiate the side surface of the object passing through the predetermined area A with laser light.
　ステップＳ１２において、演算処理装置４１は、所定領域Ａを通過する物体の側面にて反射されたレーザ光の反射光を検出したか否かを判定するよう光センサ２０を制御する。光センサ２０が反射光を検出した場合、演算処理装置４１は、ステップＳ１３に移行する。光センサ２０が反射光を検出していない場合、演算処理装置４１は、図６に示す処理を終了する。 In step S12, the arithmetic processing unit 41 controls the optical sensor 20 to determine whether the reflected light of the laser beam reflected from the side surface of the object passing through the predetermined area A is detected. When the optical sensor 20 detects reflected light, the arithmetic processing unit 41 moves to step S13. If the optical sensor 20 does not detect reflected light, the arithmetic processing unit 41 ends the process shown in FIG. 6 .
　ステップＳ１３において、演算処理装置４１は、光センサ２０による反射光の検出結果から、所定領域Ａを通過する物体の通過方向の長さを算出する。 In step S13, the processing unit 41 calculates the length of the object passing through the predetermined area A in the passing direction from the detection result of the reflected light by the optical sensor 20.
　ステップＳ１４において、演算処理装置４１は、算出された物体の通過方向の長さが閾値以上であるか否かを判定する。算出された物体の通過方向の長さが閾値以上である場合、演算処理装置４１は、ステップＳ１６に移行する。算出された物体の通過方向の長さが閾値未満である場合、演算処理装置４１は、ステップＳ１５に移行する。 In step S14, the arithmetic processing unit 41 determines whether the calculated length of the object in the passing direction is greater than or equal to a threshold value. If the calculated length of the object in the passing direction is equal to or greater than the threshold value, the arithmetic processing device 41 moves to step S16. If the calculated length of the object in the passing direction is less than the threshold value, the arithmetic processing device 41 moves to step S15.
　ステップＳ１５において、演算処理装置４１は、所定領域Ａを通過する物体が車両以外であることを検知する。その後、演算処理装置４１は、図６に示す処理を終了する。 In step S15, the processing unit 41 detects that the object passing through the predetermined area A is other than a vehicle. Thereafter, the arithmetic processing unit 41 ends the process shown in FIG.
　ステップＳ１６において、演算処理装置４１は、所定領域Ａを通過する物体が車両であることを検知する。 In step S16, the processing unit 41 detects that the object passing through the predetermined area A is a vehicle.
　ステップＳ１７において、演算処理装置４１は、所定領域Ａを通過する車両を検知したタイミングを基点とする所定時間以内に、読取装置３０がＲＦＩＤタグの情報を読み取れたか否かを判定する。演算処理装置４１は、図５のステップＳ３において、読取装置３０から送信されたＲＦＩＤタグの情報を、演算処理装置４１の所定の記憶領域に記憶している。このＲＦＩＤタグの情報には、当該ＲＦＩＤタグの情報を読み取ったタイミングの時刻情報が付加されている。演算処理装置４１は、所定の記憶領域にＲＦＩＤタグの情報が記憶されており、且つ、ＲＦＩＤタグの情報に付加された時刻情報が所定時間以内に含まれているか否かを判定することによって、ステップＳ１７の判定を行うことができる。所定時間以内に読取装置３０がＲＦＩＤタグの情報を読み取れた場合、演算処理装置４１は、ステップＳ２０に移行する。所定時間以内に読取装置３０がＲＦＩＤタグの情報を読み取れなかった場合、演算処理装置４１は、ステップＳ１８に移行する。 In step S17, the arithmetic processing unit 41 determines whether the reading device 30 was able to read the information on the RFID tag within a predetermined time based on the timing at which a vehicle passing through the predetermined area A was detected. The arithmetic processing device 41 stores the RFID tag information transmitted from the reading device 30 in a predetermined storage area of the arithmetic processing device 41 in step S3 of FIG. This RFID tag information has time information added to the timing at which the information of the RFID tag was read. The arithmetic processing unit 41 determines whether the RFID tag information is stored in a predetermined storage area and whether the time information added to the RFID tag information is included within a predetermined time. The determination in step S17 can be made. If the reading device 30 is able to read the information of the RFID tag within the predetermined time, the arithmetic processing device 41 moves to step S20. If the reading device 30 is unable to read the information on the RFID tag within the predetermined time, the arithmetic processing device 41 moves to step S18.
　ステップＳ１８において、演算処理装置４１は、ステップＳ１６において検知された車両を、ＲＦＩＤタグ非搭載の輸送対象の車両であると判別する。 In step S18, the arithmetic processing unit 41 determines that the vehicle detected in step S16 is a vehicle to be transported that is not equipped with an RFID tag.
　ステップＳ１９において、演算処理装置４１は、第１ランプ５１を点灯させると共に、第１ブザー５２から音を発生させる。その後、演算処理装置４１は、図６に示す処理を終了する。 In step S19, the arithmetic processing unit 41 turns on the first lamp 51 and causes the first buzzer 52 to generate a sound. Thereafter, the arithmetic processing unit 41 ends the process shown in FIG.
　ステップＳ２０において、演算処理装置４１は、所定時間以内に読み取られたＲＦＩＤタグの情報が作業員用バスを示すか否かを判定する。ＲＦＩＤタグの情報が作業員用バスを示す場合、演算処理装置４１は、ステップＳ２１に移行する。ＲＦＩＤタグの情報が作業員用バスを示さない場合、演算処理装置４１は、ステップＳ２２に移行する。 In step S20, the processing unit 41 determines whether the information on the RFID tag read within a predetermined time indicates a worker bus. If the information on the RFID tag indicates a worker bus, the processing unit 41 moves to step S21. If the information on the RFID tag does not indicate a worker bus, the processing unit 41 moves to step S22.
　ステップＳ２１において、演算処理装置４１は、ステップＳ１６において検知された車両を、作業員用バスであると判別する。その後、演算処理装置４１は、図６に示す処理を終了する。 In step S21, the arithmetic processing unit 41 determines that the vehicle detected in step S16 is a worker bus. Thereafter, the arithmetic processing unit 41 ends the process shown in FIG.
　ステップＳ２２において、演算処理装置４１は、ステップＳ１６において検知された車両を、ＲＦＩＤタグ搭載の輸送対象の車両であると判別する。 In step S22, the arithmetic processing unit 41 determines that the vehicle detected in step S16 is a vehicle equipped with an RFID tag and to be transported.
　ステップＳ２３において、演算処理装置４１は、第２ランプ５３を点灯させると共に、第２ブザー５４から音を発生させる。その後、演算処理装置４１は、図６に示す処理を終了する。 In step S23, the arithmetic processing unit 41 turns on the second lamp 53 and causes the second buzzer 54 to generate a sound. Thereafter, the arithmetic processing unit 41 ends the process shown in FIG.
　以上のように、本実施形態の通過車両判別システム１は、所定領域Ａを通過する車両の側面にレーザ光を照射し、当該側面にて反射されたレーザ光の反射光を検出する光センサ２０を備える。通過車両判別システム１は、車両に搭載されたＲＦＩＤタグの情報を読み取る読取装置３０を備える。通過車両判別システム１は、光センサ２０の検出結果に基づいて所定領域Ａを通過する車両を検知すると共に、読取装置３０の読み取り結果を取得する演算処理装置４１を備える。演算処理装置４１は、所定領域Ａを通過する車両を検知したタイミングを基点とする所定時間以内に、読取装置３０がＲＦＩＤタグの情報を読み取れた場合、当該タイミングに検知された車両を、当該ＲＦＩＤタグが搭載された車両であると判別する。演算処理装置４１は、当該所定時間以内に、読取装置３０がＲＦＩＤタグの情報を読み取れなかった場合、当該タイミングに検知された車両を、当該ＲＦＩＤタグが搭載されていない車両であると判別する。 As described above, the passing vehicle identification system 1 of the present embodiment includes an optical sensor 20 that irradiates a laser beam onto the side surface of a vehicle passing through a predetermined area A and detects the reflected light of the laser beam reflected from the side surface. Equipped with The passing vehicle identification system 1 includes a reading device 30 that reads information from an RFID tag mounted on a vehicle. The passing vehicle identification system 1 includes an arithmetic processing unit 41 that detects a vehicle passing through a predetermined area A based on the detection result of the optical sensor 20 and acquires the reading result of the reading device 30. If the reading device 30 is able to read the information of the RFID tag within a predetermined time based on the timing at which a vehicle passing through the predetermined area A is detected, the arithmetic processing device 41 recognizes the vehicle detected at the timing as the RFID tag. It is determined that the vehicle is equipped with a tag. If the reading device 30 is unable to read the information of the RFID tag within the predetermined time, the arithmetic processing unit 41 determines that the vehicle detected at the timing is a vehicle that is not equipped with the RFID tag.
　これにより、演算処理装置４１は、光センサ２０の検出結果に基づいて検知された車両と、読取装置３０にて読み取られた情報を発信するＲＦＩＤタグが搭載された車両との対応関係を正確に把握することができる。そして、演算処理装置４１は、光センサ２０の検出結果に基づいて検知された車両が、ＲＦＩＤタグ搭載の車両であるか、ＲＦＩＤタグ非搭載の車両であるかを、読取装置３０の読み取り結果に基づいて判別することができる。これにより、演算処理装置４１は、所定領域Ａを通過するＲＦＩＤタグ非搭載の車両を正確に判別することができる。よって、通過車両判別システム１は、ＲＦＩＤタグの搭載有無に関わらず所定領域Ａを通過する車両を正確に判別することができる。 Thereby, the arithmetic processing unit 41 can accurately determine the correspondence relationship between the vehicle detected based on the detection result of the optical sensor 20 and the vehicle equipped with the RFID tag that transmits the information read by the reading device 30. can be grasped. Then, the arithmetic processing unit 41 determines whether the detected vehicle is an RFID tag-equipped vehicle or a non-RFID tag-equipped vehicle based on the detection result of the optical sensor 20 based on the reading result of the reading device 30. It can be determined based on Thereby, the arithmetic processing unit 41 can accurately determine a vehicle passing through the predetermined area A that is not equipped with an RFID tag. Therefore, the passing vehicle discrimination system 1 can accurately discriminate a vehicle passing through the predetermined area A regardless of whether an RFID tag is installed or not.
　本実施形態の通過車両判別方法は、演算処理装置４１が図５及び図６に示す各処理を行うことによって実現され得る。 The passing vehicle discrimination method of this embodiment can be realized by the arithmetic processing unit 41 performing each process shown in FIGS. 5 and 6.
　すなわち、本実施形態の通過車両判別方法は、所定領域Ａを通過する車両の側面にレーザ光を照射し、当該側面にて反射されたレーザ光の反射光を検出すること（ステップＳ１１及びステップＳ１２）を有する。通過車両判別方法は、当該車両に搭載されたＲＦＩＤタグの情報を読み取ること（ステップＳ２）を有する。通過車両判別方法は、反射光の検出結果に基づいて所定領域Ａを通過する車両を検知すること（ステップＳ１６）を有する。通過車両判別方法は、所定領域Ａを通過する車両を検知したタイミングを基点とする所定時間以内に、ＲＦＩＤタグの情報を読み取れた場合、当該タイミングに検知された車両を、当該ＲＦＩＤタグが搭載された車両であると判別すること（ステップＳ２１及びステップＳ２２）を有する。通過車両判別方法は、当該所定時間以内に、ＲＦＩＤタグの情報を読み取れなかった場合、当該タイミングに検知された車両を、当該ＲＦＩＤタグが搭載されていない車両であると判別すること（ステップＳ１８）を有する。 That is, the method for identifying a passing vehicle according to the present embodiment includes irradiating a laser beam onto the side surface of a vehicle passing through a predetermined area A, and detecting the reflected light of the laser beam reflected from the side surface (step S11 and step S12). ). The passing vehicle identification method includes reading information from an RFID tag mounted on the vehicle (step S2). The passing vehicle determination method includes detecting a vehicle passing through the predetermined area A based on the detection result of reflected light (step S16). The passing vehicle identification method is such that if the information on the RFID tag can be read within a predetermined time based on the timing at which a vehicle passing through a predetermined area A is detected, the vehicle detected at that timing is identified as a vehicle equipped with the RFID tag. (step S21 and step S22). The passing vehicle determination method includes, if the information of the RFID tag cannot be read within the predetermined time, the vehicle detected at the timing is determined to be a vehicle that is not equipped with the RFID tag (step S18). has.
　これにより、本実施形態の通過車両判別方法は、反射光の検出結果に基づいて検知された車両と、読み取られた情報を発信するＲＦＩＤタグが搭載された車両との対応関係を正確に把握することができる。そして、通過車両判別方法は、反射光の検出結果に基づいて検知された車両が、ＲＦＩＤタグ搭載の車両であるか、ＲＦＩＤタグ非搭載の車両であるかを、ＲＦＩＤタグの情報の読み取り結果に基づいて判別することができる。これにより、通過車両判別方法は、所定領域Ａを通過するＲＦＩＤタグ非搭載の車両を正確に判別することができる。よって、通過車両判別方法は、ＲＦＩＤタグの搭載有無に関わらず所定領域Ａを通過する車両を正確に判別することができる。 As a result, the passing vehicle identification method of this embodiment accurately grasps the correspondence relationship between the vehicle detected based on the detection result of reflected light and the vehicle equipped with the RFID tag that transmits the read information. be able to. The passing vehicle identification method then determines whether the detected vehicle is a vehicle equipped with an RFID tag or a vehicle without an RFID tag based on the detection result of the reflected light. It can be determined based on Thereby, the passing vehicle discrimination method can accurately discriminate a vehicle that is not equipped with an RFID tag and passes through the predetermined area A. Therefore, the passing vehicle discrimination method can accurately discriminate a vehicle passing through the predetermined area A regardless of whether an RFID tag is installed or not.
　以上、本発明の実施形態について詳述したが、本発明は、上記の実施形態に限定されるものではなく、請求の範囲に記載された本発明の精神を逸脱しない範囲で、種々の変更を行うことができる。本発明は、或る実施形態の構成を他の実施形態の構成に追加したり、或る実施形態の構成を他の実施形態と置換したり、或る実施形態の構成の一部を削除したりすることができる。 Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention as set forth in the claims. It can be carried out. The present invention does not include adding the configuration of one embodiment to the configuration of another embodiment, replacing the configuration of one embodiment with another embodiment, or deleting a part of the configuration of one embodiment. You can
　１…通過車両判別システム、１０…移動体、２０…光センサ、３０…読取装置、４１…演算処理装置、５０…報知装置、Ａ…所定領域 1... Passing vehicle identification system, 10... Moving object, 20... Optical sensor, 30... Reading device, 41... Arithmetic processing device, 50... Notification device, A... Predetermined area

Claims (7)

  1. 　所定領域を通過する車両の側面にレーザ光を照射し、前記側面にて反射された前記レーザ光の反射光を検出する光センサと、
    　前記車両に搭載されたＲＦＩＤタグの情報を読み取る読取装置と、
    　前記光センサの検出結果に基づいて前記所定領域を通過する前記車両を検知すると共に、前記読取装置の読み取り結果を取得する演算処理装置と、を備え、
    　前記演算処理装置は、
    　　前記所定領域を通過する前記車両を検知したタイミングを基点とする所定時間以内に、前記読取装置が前記ＲＦＩＤタグの情報を読み取れた場合、当該タイミングに検知された前記車両を、当該ＲＦＩＤタグが搭載された前記車両であると判別し、
    　　前記所定時間以内に、前記読取装置が前記ＲＦＩＤタグの情報を読み取れなかった場合、当該タイミングに検知された前記車両を、当該ＲＦＩＤタグが搭載されていない前記車両であると判別する
    　ことを特徴とする通過車両判別システム。     an optical sensor that irradiates a side surface of a vehicle passing through a predetermined area with a laser beam and detects the reflected light of the laser beam reflected from the side surface;
    a reading device that reads information from an RFID tag mounted on the vehicle;
    an arithmetic processing device that detects the vehicle passing through the predetermined area based on the detection result of the optical sensor and acquires the reading result of the reading device;
    The arithmetic processing device is
    If the reading device is able to read the information of the RFID tag within a predetermined time based on the timing at which the vehicle passing through the predetermined area is detected, the vehicle detected at the timing is mounted on the RFID tag. The vehicle is determined to be the vehicle that has been
    If the reading device fails to read the information of the RFID tag within the predetermined time, the vehicle detected at the timing is determined to be the vehicle in which the RFID tag is not installed. passing vehicle identification system.
  2. 　前記所定時間は、前記タイミングから遡った第１時間と、前記タイミングから経過した第２時間との合計である
    　ことを特徴とする請求項１に記載の通過車両判別システム。     The passing vehicle discrimination system according to claim 1, wherein the predetermined time is the sum of a first time that has elapsed since the timing and a second time that has elapsed since the timing.
  3. 　前記演算処理装置は、
    　　前記光センサの前記検出結果に基づいて前記所定領域を通過する物体の通過方向の長さを算出し、算出された前記長さに基づいて前記物体が前記車両であることを検知し、
    　　検知された前記車両に対して、前記ＲＦＩＤタグが搭載された前記車両であるか否かの判別を行う
    　ことを特徴とする請求項１に記載の通過車両判別システム。     The arithmetic processing device is
    calculating a length in a passing direction of an object passing through the predetermined area based on the detection result of the optical sensor, and detecting that the object is the vehicle based on the calculated length;
    The passing vehicle discrimination system according to claim 1, further comprising determining whether or not the detected vehicle is the vehicle equipped with the RFID tag.
  4. 　前記所定領域は、前記車両を輸送する輸送船が停泊する埠頭に設けられており、
    　前記ＲＦＩＤタグの情報は、前記輸送船に船積み又は陸揚げされる前記車両の識別情報であり、
    　前記演算処理装置は、前記車両の判別結果に基づいて前記船積み又は前記陸揚げされる前記車両の台数を算出する
    　ことを特徴とする請求項１に記載の通過車両判別システム。     The predetermined area is provided at a wharf where a transport ship that transports the vehicle is moored,
    The information on the RFID tag is identification information of the vehicle loaded onto or unloaded on the transport ship,
    The passing vehicle discrimination system according to claim 1, wherein the arithmetic processing unit calculates the number of the vehicles to be loaded or unloaded based on the vehicle discrimination result.
  5. 　前記演算処理装置による前記車両の判別結果を前記所定領域の周囲に報知する報知装置を更に備え、
    　前記報知装置は、前記車両の判別結果のうち、少なくとも、前記ＲＦＩＤタグが搭載されていない前記車両の判別結果を報知する
    　ことを特徴とする請求項１に記載の通過車両判別システム。     further comprising a notification device that notifies people around the predetermined area of a determination result of the vehicle by the arithmetic processing device;
    The passing vehicle discrimination system according to claim 1, wherein the notification device notifies at least the discrimination results of the vehicle in which the RFID tag is not mounted, among the discrimination results of the vehicles.
  6. 　前記光センサ、前記読取装置、前記演算処理装置及び前記報知装置は、移動体に設置されている
    　ことを特徴とする請求項５に記載の通過車両判別システム。     The passing vehicle discrimination system according to claim 5, wherein the optical sensor, the reading device, the arithmetic processing device, and the notification device are installed in a moving object.
  7. 　所定領域を通過する車両の側面にレーザ光を照射し、前記側面にて反射された前記レーザ光の反射光を検出することと、
    　前記車両に搭載されたＲＦＩＤタグの情報を読み取ることと、
    　前記反射光の検出結果に基づいて前記所定領域を通過する前記車両を検知することと、　前記所定領域を通過する前記車両を検知したタイミングを基点とする所定時間以内に、前記ＲＦＩＤタグの情報を読み取れた場合、当該タイミングに検知された前記車両を、当該ＲＦＩＤタグが搭載された前記車両であると判別することと、
    　前記所定時間以内に、前記ＲＦＩＤタグの情報を読み取れなかった場合、当該タイミングに検知された前記車両を、当該ＲＦＩＤタグが搭載されていない前記車両であると判別することと、を有する
    　ことを特徴とする通過車両判別方法。     irradiating a side surface of a vehicle passing through a predetermined area with a laser beam, and detecting reflected light of the laser beam reflected from the side surface;
    reading information from an RFID tag mounted on the vehicle;
    Detecting the vehicle passing through the predetermined area based on the detection result of the reflected light; and detecting the information on the RFID tag within a predetermined time based on the timing at which the vehicle passing through the predetermined area is detected. If the RFID tag is read, determining that the vehicle detected at the timing is the vehicle equipped with the RFID tag;
    If the information on the RFID tag cannot be read within the predetermined time, the vehicle detected at the timing is determined to be the vehicle in which the RFID tag is not installed. A method for identifying passing vehicles.
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Title
GEKKAN SECURITY KENKYU, SECURITY INFO. SPECIAL 2022 SPRING, vol. 25, no. 3, 046, 25 February 2022 (2022-02-25) *

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