WO2023182516A1 - Système d'identification de véhicule passant et procédé d'identification de véhicule passant - Google Patents

Système d'identification de véhicule passant et procédé d'identification de véhicule passant 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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WIPO (PCT)
Prior art keywords
vehicle
rfid tag
passing
predetermined area
information
Prior art date
Application number
PCT/JP2023/011998
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English (en)
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/fr

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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

La présente invention identifie avec précision un véhicule passant dans une région prédéfinie indépendamment de la présence/absence d'une étiquette RFID montée sur celui-ci. Un système d'identification de véhicule passant 1 comprend : un capteur optique 20 qui émet de la lumière laser sur une surface latérale d'un véhicule passant dans une région prédéfinie A et détecte la lumière réfléchie de la lumière laser ; un dispositif de lecture 30 destiné à lire les informations d'une étiquette RFID montée sur le véhicule ; et un dispositif de traitement arithmétique 41 qui détecte un véhicule passant dans la région prédéfinie A sur la base du résultat de détection du capteur optique 20 et acquiert le résultat de lecture du dispositif de lecture 30. Lorsque les informations de l'étiquette RFID sont lues dans un temps prédéfini à partir du moment auquel le véhicule passant dans la région prédéfinie A est détecté, le dispositif de traitement arithmétique 41 identifie le véhicule détecté à ce moment en tant que véhicule sur lequel l'étiquette RFID est montée. Lorsque les informations de l'étiquette RFID ne sont pas lues dans le temps prédéfini, le dispositif de traitement arithmétique 41 identifie le véhicule détecté à ce moment en tant que véhicule sur lequel aucune étiquette RFID n'est montée.
PCT/JP2023/011998 2022-03-25 2023-03-24 Système d'identification de véhicule passant et procédé d'identification de véhicule passant WO2023182516A1 (fr)

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JP2022050601A JP2023143298A (ja) 2022-03-25 2022-03-25 通過車両判別システム及び通過車両判別方法

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5426759A (en) * 1977-07-30 1979-02-28 Fuji Electric Co Ltd Passage discrimanating system for passengers and vehicles
JP2006143447A (ja) * 2004-11-24 2006-06-08 Toyota Motor Corp 輸送手段および積載確認システム
WO2020084746A1 (fr) * 2018-10-25 2020-04-30 三菱重工機械システム株式会社 Dispositif de bord de route, dispositif central, procédé de commande de dispositif de bord de route, programme de commande de dispositif de bord de route, procédé de commande de dispositif central et programme de commande de dispositif central

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5426759A (en) * 1977-07-30 1979-02-28 Fuji Electric Co Ltd Passage discrimanating system for passengers and vehicles
JP2006143447A (ja) * 2004-11-24 2006-06-08 Toyota Motor Corp 輸送手段および積載確認システム
WO2020084746A1 (fr) * 2018-10-25 2020-04-30 三菱重工機械システム株式会社 Dispositif de bord de route, dispositif central, procédé de commande de dispositif de bord de route, programme de commande de dispositif de bord de route, procédé de commande de dispositif central et programme de commande de dispositif central

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GEKKAN SECURITY KENKYU, SECURITY INFO. SPECIAL 2022 SPRING, vol. 25, no. 3, 046, 25 February 2022 (2022-02-25) *

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