JPWO2020084746A1 - Roadside device, central device, roadside device control method, roadside device control program, central device control method, and central device control program - Google Patents

Abstract

The roadside device is a photographing device that captures an image of the vehicle by using the detection of the vehicle as a trigger, a tag information reading device that is provided in the same lane as the photographing device and acquires tag information, and a communication start time of one tag information. And the communication end time are acquired, and for one vehicle image, the tag information of the period from the communication start time to the communication end time and the shooting time of the vehicle image are associated with the vehicle image to the vehicle. It includes a processing unit that transmits to a central device that charges.

Description

The present invention relates to a roadside device, a central device, a roadside device control method, a roadside device control program, a central device control method, and a central device control program.

A toll collection system that collects road tolls has been proposed, tested, or put into practical use. For example, in Singapore, a device on a gantry (for example, a gate-shaped structure) installed on a free-flow road (where there is no barrier on the road and can run freely) communicates data with the on-board unit mounted on the vehicle. I do. In Singapore, a mechanism for collecting tolls by deducting the amount from the prepaid balance in the toll recording device built into the in-vehicle device is operating under the name of ERP (Electronic Road Pricing). And in Japan, the following mechanism is operating under the name of ETC (Electronic Toll Collection System). In ETC, data communication is performed with the on-board unit mounted on the vehicle at a tollhouse having lanes with barriers in individual lanes. In addition, ETC collects tolls by charging the amount of money to the credit card using the credit card information built in the in-vehicle device. Although these mechanisms are highly reliable, they require expensive in-vehicle devices, and inexpensive methods are being studied mainly in developing countries. For example, a collection system using RFID (Radio Frequency Identifier) tags is being studied.

Patent Document 1 discloses a configuration in which a license plate is photographed at a gate and the opening / closing of the gate is controlled by using the information of the RF tag and the photographed image data in addition to the communication with the RF tag.

However, when the technology described in Patent Document 1 is applied to a toll road, a vehicle traveling on an adjacent non-charged road is charged or is not charged even though it is actually traveling due to a problem of communication reliability. A case is assumed.

Utility Model Registration No. 3115125

The present invention has been made in view of such a problem, and is a roadside device, a central device, a roadside device control method, a roadside device control program, and a central device control method capable of accurately identifying and charging a passing vehicle. , And a central device control program.

In order to achieve the above object, the roadside device (20) according to one aspect of the present invention is set in the same lane as the photographing device (14) for photographing the image of the vehicle by using the detection of the vehicle as a trigger. A tag information reading device (12) provided to acquire tag information, and a communication start time (t1) and a communication end time (t2) of the tag information are acquired, and the image of the vehicle is described. A processing unit that associates the tag information of the period from the communication start time to the communication end time with the image of the vehicle with the shooting time (t3) of the image of the vehicle and transmits the tag information to the central device that charges the vehicle. (205) and.
According to such a configuration, the tag information of the period from the communication start time to the communication end time is associated with the image of the vehicle taken during this period and the shooting time. Can be matched with. As a result, the central device can accurately identify the passing vehicle by using the information received from the roadside device for billing.

Further, in the roadside device according to one aspect of the present invention, the processing unit uses the identification information of the own device, the identification information of the lane, the shooting time, the tag information, the communication start time, and the communication end. It may be transmitted to the central device in association with the time.
According to such a configuration, since the information is associated with each lane and transmitted to the central device, the passing vehicle can be accurately identified and charged for each lane using the information received by the central device.

Further, in the roadside device according to one aspect of the present invention, the processing unit extracts license plate information regarding the license plate of the vehicle from the image of the vehicle by image recognition, and uses the extracted license plate information as the tag information. It may be associated and transmitted to the central device.
According to such a configuration, since the license plate information is also transmitted to the central device in association with the tag information, the passing vehicle can be accurately identified and charged by using the license plate information received by the central device. Can be done.

In order to achieve the above object, the central device (40) according to one aspect of the present invention includes the tag information of the period from the communication start time (t1) to the communication end time (t2) on the image of the vehicle (2) and the vehicle. Of the tag information of the communication unit (401) that receives the information associated with the shooting time (t3) of the image from the roadside device and the tag information of the period from the received communication start time to the communication end time 1, the vehicle. With the processing unit (402) that extracts the tag information of the shooting time of the image, associates the tag information of the shooting time with the image of the vehicle, and charges the vehicle based on the associated result. , Equipped with.
According to such a configuration, the tag information of the shooting time can be extracted by using the information received from the roadside device. As a result, it is possible to accurately identify and charge the passing vehicle by using the image with the same time and the tag information.

Further, in the central device according to one aspect of the present invention, the processing unit extracts license plate information regarding the license plate of the vehicle from the image of the vehicle by image recognition, and the extracted license plate information is also used to extract the license plate information of the vehicle. You may charge for.
According to such a configuration, it is possible to accurately identify and charge a passing vehicle by using the license plate information as well.

Further, in the central device according to one aspect of the present invention, when there is no tag information to be associated with the image of the vehicle, the processing unit associates information indicating that there is no tag information with the result of the association. Based on this, the vehicle may be charged.
According to such a configuration, even if the tag information cannot be acquired, processing can be performed using the same information (record) as when the tag information can be acquired.

Further, in the central device according to one aspect of the present invention, when the number of tag information to be associated with the image of the vehicle is n (n is an integer of 2 or more), the processing unit performs each of n tag information. The image of the vehicle may be associated with the vehicle, and the vehicle may be charged based on the result of the association.
According to such a configuration, even if one vehicle has a plurality of tag information or a plurality of vehicles are traveling during the communication period, one vehicle can display one tag information. Processing can be performed using the same information (record) as when one vehicle is running or when one vehicle is running during the communication period.

In order to achieve the above object, in the roadside device control method according to one aspect of the present invention, the photographing device uses the detection of the vehicle as a trigger to take an image of the vehicle in a photographing step and in the same lane as the photographing device. The provided tag information reading device acquires the tag information reading step, and the processing unit acquires the communication start time and the communication end time of the tag information, and the image of the vehicle is described. A processing step of associating the tag information of the period from the communication start time to the communication end time with the shooting time of the image of the vehicle to the image of the vehicle and transmitting the tag information to the central device for charging the vehicle. including.

In order to achieve the above object, the roadside device control program according to one aspect of the present invention acquires, in the computer of the roadside device, a shooting step of taking an image of the vehicle and tag information by using the detection of the vehicle as a trigger. The tag information reading step, the communication start time and the communication end time of the tag information are acquired, and for the image of the vehicle, the period from the communication start time to the communication end time is displayed on the image of the vehicle. A processing step of associating the tag information with the shooting time of the image of the vehicle and transmitting the tag information to the central device that charges the vehicle is executed.

In order to achieve the above object, in the central device control method according to one aspect of the present invention, the communication unit transmits information in which the tag information of the period from the communication start time to the communication end time is associated with the image of the vehicle as a roadside device. The processing unit extracts the tag information of the shooting time of the image of the vehicle from the tag information of the period from the received communication start time to the communication end time, and the image of the vehicle. Includes a processing step of associating the tag information of the shooting time with the shooting time of an image of the vehicle and charging the vehicle based on the associated result.

In order to achieve the above object, the central device control program according to one aspect of the present invention provides the computer of the central device with information in which the tag information of the period from the communication start time to the communication end time is associated with the image of the vehicle. From the communication step received from the roadside device and the tag information in the period from the received communication start time to the communication end time, the tag information of the shooting time of the image of the vehicle is extracted and used as the image of the vehicle. , The processing step of associating the tag information of the shooting time with the shooting time of the image of the vehicle and charging the vehicle based on the associated result.

The roadside device or central device of the present invention can accurately identify and charge a passing vehicle.

It is a figure which shows the configuration example of the charge collection system which concerns on this embodiment. It is a figure which shows the example of the information which the 3rd storage device which concerns on this embodiment stores. It is a figure which shows the example of the information which the 4th storage device which concerns on this embodiment stores. It is a figure which shows the example of the information which the 6th storage device which concerns on this embodiment stores. It is a figure which shows the example of the information which the 7th storage device which concerns on this embodiment stores. It is a figure which shows the example of the information which the 8th storage device which concerns on this embodiment stores. It is a figure which shows the example of the component arrangement, the communication area, and the example of a shooting range arranged in the vicinity of the gate which concerns on this embodiment. It is a figure which shows the example of the TID which concerns on this embodiment, the communication start time t1, the communication end time t2, and the shooting time t3. It is a flowchart of the RFID reception processing procedure performed by the roadside apparatus which concerns on this embodiment. It is a flowchart of the photographing processing procedure performed by the roadside apparatus which concerns on this embodiment. It is a flowchart of the processing procedure performed by the central apparatus which concerns on this embodiment. It is a flowchart of the photographing processing procedure performed by the roadside apparatus which concerns on the modification of this embodiment. It is a flowchart of the processing procedure example performed by the central apparatus which concerns on the modification of this embodiment. It is a flowchart of the processing procedure example performed by the central apparatus which concerns on the modification of this embodiment.

<Configuration of toll collection system 1>
First, a configuration example of the toll collection system 1 will be described.
FIG. 1 is a diagram showing a configuration example of the toll collection system 1 according to the present embodiment. As shown in FIG. 1, the toll collection system 1 includes a roadside device 20, a storage device 30, a central device 40, a storage device 50, a first storage device 60, and a second storage device 70.

The roadside device 20 includes a sensor 10, an RFID reading device 12 (tag information reading device), a photographing device 14, an acquisition unit 201, an acquisition unit 202, an acquisition unit 203, a processing unit 205, and a communication unit 206. Be prepared.
The storage device 30 includes a third storage device 301 and a fourth storage device 302.

The central device 40 includes a communication unit 401 and a processing unit 402.
The storage device 50 includes a sixth storage device 501, a seventh storage device 502, and an eighth storage device 503.

The sensor 10 detects the vehicle and outputs the detected result to the acquisition unit 201. The sensor 10 and the acquisition unit 201 may be connected by wire or wirelessly.

The RFID reading device 12 communicates with a wireless tag attached to the vehicle to acquire RFID information (tag information) including a unique ID (identification information) (hereinafter, the unique ID is also referred to as a TID). The RFID reader 12 can repeatedly acquire RFID information. The RFID reader 12 outputs the acquired RFID information to the acquisition unit 202. The RFID reading device 12 continuously and intermittently outputs RFID information, for example, at a predetermined cycle during the period of communication with the wireless tag in the communication area described later. The RFID reading device 12 adds time information to the output RFID information and transmits the RFID information. Further, when a plurality of wireless tags enter the same communication area, the RFID reading device 12 transmits the RFID information of any of them to the acquisition unit 202, but the order and excess / deficiency are not managed. The RFID reading device 12 and the acquisition unit 202 may be connected by wire or wirelessly.

The photographing device 14 photographs the vehicle including the license plate at the imaging timing controlled by the processing unit 205, and outputs the photographed image data to the acquisition unit 203. The shooting time t3 is added to the image data. The photographing device 14 and the acquisition unit 203 may be connected by wire or wirelessly.

The first storage device 60 stores the description information of the license plate in association with the name of the owner of the vehicle who obtained the license plate, the owner information of the vehicle, and the vehicle type (car class) information. The license plate of the vehicle is managed by a public institution such as the government when the vehicle is obtained. The first storage device 60 is managed by a public institution such as the government.

The second storage device 70 has the TID of the wireless tag, the information of the acquirer, the vehicle information (target vehicle, the license plate of the target vehicle, the vehicle type, etc.), and the information of the payment method (prepayment, postpayment, credit payment, etc.). , Store in association with the electronic account for billing.

(Function of roadside device 20)
The roadside device 20 is installed at each position, for example, an entrance and an exit of a toll road. The roadside device 20 controls the shooting timing of the shooting device 14 based on the detection result acquired from the sensor 10. The roadside device 20 stores the TID acquired by the RFID reading device 12 in the third storage device 301 of the storage device 30. The roadside device 20 stores the image data captured by the photographing device 14 in the fourth storage device 302 of the storage device 30. The roadside device 20 transmits the information stored in the storage device 30 to the central device 40. The roadside device 20 and the central device 40 are connected via a network, for example.

The acquisition unit 201 acquires the detection result output by the sensor 10 and outputs the acquired detection result to the processing unit 205.

The acquisition unit 202 acquires the RFID information output by the RFID reader 12. In this case, the acquisition unit 202 adds the time when the TID included in the RFID information is acquired (communication start time) and the time when the TID included in the RFID information is acquired (communication end time) to the RFID information. Is output to the processing unit 205. The acquisition unit 202 may have a time measuring means (not shown). In this case, the acquisition unit 202 may measure the time when the acquisition of the TID is started and the time when the acquisition is completed, and add the measured time information to the RFID information.

The acquisition unit 203 acquires the image data output by the photographing device 14, and outputs the acquired image data to the processing unit 205.

The processing unit 205 controls the shooting timing (shutter timing) of the shooting device 14 based on the detection result detected by the sensor 10 output by the acquisition unit 201. The shooting timing is, for example, when the vehicle reaches a predetermined position and is a time between the communication start time and the communication end time. The processing unit 205 acquires the RFID information output by the acquisition unit 202. As described above, the RFID information includes the TID, the communication start time, and the communication end time. The processing unit 205 associates the TID with the communication start time t1 and the communication end time t2 and stores them in the third storage device 301. The processing unit 205 acquires the image data output by the acquisition unit 203. As described above, the image data includes the shooting time t3. The shooting timing does not have to be the same as the time detected by the sensor 10. The shooting time t3 may be, for example, a time offset from the time detected by the sensor 10 by a predetermined time. Even in this case, the shooting time t3 may be a time between the communication start time t1 and the communication end time t2, and may be a timing triggered by the detection result of the sensor 10. Alternatively, the shooting timing may be any timing as long as the vehicle is detected, and may not be the timing detected by the sensor 10. Therefore, the roadside device 20 does not have to include the sensor 10 for detecting the vehicle. For example, the imaging timing may be the timing at which the photographing device 14 continuously acquires images in time and the image of the vehicle becomes equal to or larger than a predetermined area in the captured images. Alternatively, the shooting timing may be the timing based on the time when the vehicle is detected by acquiring the RFID information by the RFID reading device 12 and the RFID information is acquired.

The processing unit 205 assigns an image unique ID (hereinafter referred to as PID) to the image data, associates the image data with the PID and the shooting time t3, and stores the image data in the fourth storage device 302. The shooting time t3 may be a shooting timing time controlled so as to shoot the shooting device 14. The processing unit 205 transmits all or arbitrary information of the information stored in the third storage device 301 and the information stored in the fourth storage device 302 to the central device 40 via the communication unit 206. The information to be transmitted is for each lane, and is the unique information of the roadside device (roadside device ID), the unique information of the lane (lane ID), the unique information of the image data (PID), the shooting time t3, and the TID. , The communication start time t1 and the communication end time t2 are included.

The communication unit 206 transmits the information output by the processing unit 205 to the central device 40.

(Information stored in the storage device 30)
As shown in FIG. 2, the third storage device 301 stores the TID, the communication start time t1 and the communication end time t2 in association with each other. FIG. 2 is a diagram showing an example of information stored in the third storage device 301 according to the present embodiment.

As shown in FIG. 3, the fourth storage device 302 stores the image data, the PID, and the shooting time t3 in association with each other. FIG. 3 is a diagram showing an example of information stored in the fourth storage device 302 according to the present embodiment.

The example shown in FIGS. 2 and 3 is an example. For example, the storage device 30 divides one storage device into a plurality of areas, and the information stored in the third storage device 301 and the information stored in the fourth storage device 302 The information to be memorized may be memorized. Further, the storage device 30 may also store other information in association with each other. The other information is, for example, unique information (gate ID, etc.) of the roadside device 20.

(Function of central device 40)
Returning to FIG. 1, the central device 40 will be described.
The central device 40 collects information transmitted by the roadside device 20. The central device 40 processes the collected information and stores the processed information in the storage device 50. The central device 40 charges the vehicle based on the information stored in the storage device 50.

The communication unit 401 receives the information transmitted by the roadside device 20, and outputs the received information to the processing unit 402.

The processing unit 402 extracts the TID between the communication start time t1 and the communication end time t2 with respect to the shooting time t3 for each gate lane. The processing unit 402 records the extracted TID in the sixth storage device 501 together with the PID and the shooting time t3.
After the above work, when the number of the license plate of the image can be identified for the PID having no TID to be associated, the processing unit 402 associates the image data, the PID, the shooting time t3, and the license plate information with the seventh storage device 502. Record in. The processing unit 402 identifies the license plate information described on the license plate by using a well-known image recognition method such as feature amount extraction and pattern matching for the image data.
When the number of the license plate of the image cannot be identified for the PID having no TID to be associated, the processing unit 402 associates the image data with the PID and the shooting time t3 and records the PID in the eighth storage device 503.
The processing unit 402 charges the vehicle specified by the TID stored in the sixth storage device 501 with reference to the second storage device 70.
The processing unit 402 charges the vehicle specified by the license plate information of the seventh storage device 502 with reference to the first storage device 60.
The processing unit 402 charges the vehicle specified by the image data of the eighth storage device 503 by processing in accordance with the law such as accusation to the police.

(Information stored in the storage device 50)
As shown in FIG. 4, the sixth storage device 501 stores the TID, the PID, and the photographing time t3 in association with each other. FIG. 4 is a diagram showing an example of information stored in the sixth storage device 501 according to the present embodiment.

As shown in FIG. 5, the seventh storage device 502 stores the image data, the PID, the shooting time t3, and the license plate information in association with each other. FIG. 5 is a diagram showing an example of information stored in the seventh storage device 502 according to the present embodiment.

As shown in FIG. 6, the eighth storage device 503 stores the image data, the PID, and the shooting time t3 in association with each other. FIG. 6 is a diagram showing an example of information stored in the eighth storage device 503 according to the present embodiment.

The example shown in FIGS. 4 to 6 is an example. For example, the storage device 50 divides one storage device into a plurality of areas, and the information stored in the sixth storage device 501 and the information stored in the seventh storage device 502 The information to be stored and the information stored by the eighth storage device 503 may be stored. Further, the storage device 50 may also store other information in association with each other. The other information is, for example, unique information (gate ID, etc.) of the roadside device 20.

(Outline of components installed near the gate)
Next, the outline of the components installed near the gate will be described.
FIG. 7 is a diagram showing an example of components arranged near the gate according to the present embodiment, a communication area, and an example of a shooting range.
In FIG. 7, the region indicated by the reference numeral g11 shows an example of a component arranged near the gate and a communication region, and is a view of the road as viewed from above. The region indicated by the reference numeral g12 shows an example of a detection range and an example of a photographing range, and is a side view of the road. In FIG. 7, the traveling direction of the vehicle 2 is the x direction, the direction of the horizontal plane perpendicular to the x direction is the y direction, and the height direction is the z direction.

Note that FIG. 7 illustrates a case where a vehicle to which the wireless tag 3 and the license plate 4 are attached travels on the road.
The example shown by reference numeral g11 is an example of a road having three lanes. A sensor 10-n is provided in the nth (n is an integer of 1 to 3) lane via a support member 5. When one of the sensors 10-1 to 10-3 is not specified, it is referred to as a sensor 10. Further, in the nth lane, an RFID reading device 12-n and a photographing device 14-n are provided via a support member 6. When one of the RFID reading devices 12-1 to 12-3 is not specified, it is referred to as the RFID reading device 12. Further, when one of the photographing devices 14-1 to 14-3 is not specified, it is referred to as a photographing device 14. The sensor 10 may have a shutter function by image processing of the photographing device 14.

Further, as shown in FIG. 7, the sensor 10, the RFID reading device 12, and the photographing device 14 are installed in the same lane. If each lane can be identified, it may be arranged so that one imaging device can capture a plurality of lanes.

In the region indicated by the reference numeral g11, the region 101-n is a communication region between the wireless tag 3 and the RFID reader 12 in the xy plane. When one of the regions 101-n is not specified, it is referred to as region 101. Position 111 is a position where communication is started. The position 112 is a shooting timing position for shooting by the shooting device 14. Position 113 is a position where communication is terminated.

As shown in the regions indicated by the symbols g11 and g12, the radio tag 3 and the RFID reader 12 communicate with each other in the sections of positions 111 to 113. In the region indicated by reference numeral g12, reference numerals 121a and 121b indicate a communicable range in the xz plane. In the region indicated by reference numeral g12, reference numerals 131a and 131b indicate a photographable range of the photographing apparatus 14 in the xz plane.

As shown in the regions indicated by the symbols g11 and g12, the photographing device 14 photographs the vehicle 2 including the license plate 4 at the position 112 based on the detection result of the sensor 10. The photographing device 14 outputs the photographed image data to the roadside device 20 (FIG. 1).
Further, as shown in the regions indicated by the symbols g11 and g12, the RFID reading device 12 communicates with the wireless tag 3 in the sections of positions 111 to 113, and acquires RFID information from the wireless tag 3. The RFID reading device 12 outputs the acquired RFID information to the roadside device 20 (FIG. 1).

(Example of TID, communication start time t1, communication end time t2, shooting time t3)
Next, an example of the TID, the communication start time t1, the communication end time t2, and the shooting time t3 will be described.
FIG. 8 is a diagram showing an example of the TID, the communication start time t1, the communication end time t2, and the shooting time t3 according to the present embodiment. Further, FIG. 8 is a diagram showing an example of communication for one lane. The horizontal axis is time. As shown in FIG. 8, the RFID reading device 12 outputs RFID information including the TID intermittently acquired to the roadside device 20 during the period of the communication start time t1 to the communication end time t2. Further, as shown in FIG. 8, the shooting time t3, which is the shooting timing, is a time between the communication start time t1 and the communication end time t2. The TID acquisition cycle is 200 [ms] as an example.

(Processing example of roadside device 20 and central device 40)
Next, a processing example performed by the roadside device 20 and the central device 40 will be described.
There is a possibility that the following three types of vehicles coexist on the toll road.
・ Class 1 vehicle; vehicle with registered license plate and registered wireless communication tag ・ Class 2 vehicle; vehicle with registered license plate but not registered wireless communication tag ・ 3 Vehicles of the type; vehicles that do not have a registered license plate, that the license plate is damaged, or that it is intentionally deformed or concealed and cannot be seen correctly, and that it does not have a registered wireless tag.

First, the RFID reading process will be described.
FIG. 9 is a flowchart of the RFID reception processing procedure performed by the roadside device 20 according to the present embodiment.

(Step S11) The processing unit 205 acquires the RFID information acquired by the RFID reader 12 via the acquisition unit 202.

(Step S12) Based on the RFID information, the processing unit 205 performs authentication confirmation as to whether or not the wireless tag for which the RFID information has been acquired is issued by the toll collection system 1.

(Step S13) When the authentication is OK, that is, when the wireless tag for which the RFID information has been acquired is authenticated to have been issued by the toll collection system 1 (step S13; YES), the processing unit 205 processes in step S15. Proceed to. The processing unit 205 proceeds to the process of step S14 in the case of authentication NG, that is, when the wireless tag for which the RFID information has been acquired is authenticated that it was not issued by the toll collection system 1 (step S13; NO).

(Step S14) The processing unit 205 discards the acquired RFID information. After completing step S14, the processing unit 205 ends the processing.

(Step S15) The processing unit 205 stores the TID included in the RFID information, the communication start time t1 and the communication end time t2 in association with each other in the third storage device 301. The processing unit 205 transmits the information stored in the third storage device 301 to the central device 40 via the communication unit 206.

Next, the shooting process will be described.
FIG. 10 is a flowchart of a shooting processing procedure performed by the roadside device 20 according to the present embodiment.

(Step S21) The processing unit 205 determines whether or not the shooting timing is based on the detection result output by the sensor 10. When the processing unit 205 determines that it is the shooting timing (step S21; YES), the processing unit 205 proceeds to the processing of step S22. When the processing unit 205 determines that it is not the shooting timing (step S21; NO), the processing unit 205 repeats the processing of step S21.

(Step S22) The processing unit 205 controls the photographing device 14 to perform photographing. Subsequently, the processing unit 205 assigns a PID to the captured image.

(Step S23) The processing unit 205 stores the image data, the PID, and the shooting time t3 included in the image data in the fourth storage device 302 in association with each other. The processing unit 205 transmits the information stored in the fourth storage device 302 to the central device 40 via the communication unit 206.

Next, the shooting process will be described.
FIG. 11 is a flowchart of a processing procedure performed by the central device 40 according to the present embodiment.

(Step S31) The processing unit 402 receives the information transmitted by the roadside device 20 via the communication unit 401.

(Step S32) The processing unit 402 extracts the TID between the communication start time t1 and the communication end time t2 with respect to the shooting time t3 for each lane of the individual gate.

(Step S33) The processing unit 402 determines whether or not there is a TID to be associated with the PID and there is only one corresponding TID. When the processing unit 402 determines that there is a TID associated with the PID and the corresponding TID is one (step S33; YES), the processing unit 402 proceeds to the process of step S34. When the processing unit 402 determines that there is no TID to be associated with the PID or that there are a plurality of corresponding TIDs (step S33; NO), the processing unit 402 proceeds to the process of step S36.

(Step S34) The processing unit 402 associates the TID with the PID.

(Step S35) The processing unit 402 records the TID, the PID, and the shooting time t3 in the sixth storage device 501 in association with each other. The information stored in the sixth storage device 501 corresponds to the above-mentioned Class 1 vehicle. After the processing, the processing unit 402 proceeds to the processing of step S40.

(Step S36) The processing unit 402 performs an image recognition process for recognizing license plate information from image data.

(Step S37) The processing unit 402 determines whether or not the license plate information can be image-recognized from the image data. When the processing unit 402 determines that the license plate information can be image-recognized from the image data (step S37; YES), the processing unit 402 proceeds to the process of step S38. When the processing unit 402 determines from the image data that the license plate information could not be recognized as an image (step S37; NO), the processing unit 402 proceeds to the process of step S39.

(Step S38) The processing unit 402 records the image data, the PID, the shooting time t3, and the license plate information in the seventh storage device 502 in association with each other. The information stored in the seventh storage device 502 corresponds to the case where the acquisition of the TID fails in the above-mentioned class 1 vehicle or the above-mentioned class 2 vehicle. After the processing, the processing unit 402 proceeds to the processing of step S40.

(Step S39) The processing unit 402 records the image data, the PID, and the shooting time t3 in the eighth storage device 503 in association with each other. The information stored in the eighth storage device 503 corresponds to the above-mentioned three types of vehicles. After the processing, the processing unit 402 proceeds to the processing of step S40.
When the image data includes a plurality of billing target vehicles, the processing unit 402 performs the processing of steps S36 to S39 for each vehicle.

(Step S40) The processing unit 402 performs billing processing. The processing unit 402 refers to the second storage device 70 and charges the vehicle associated with the TID stored in the sixth storage device 501, for example. Alternatively, the processing unit 402 charges the vehicle associated with the license plate information of the seventh storage device 502 with reference to the first storage device 60. Alternatively, the processing unit 402 charges the vehicle associated with the image data of the eighth storage device 503 by processing in accordance with the law such as accusation to the police.

As described above, in the present embodiment, by associating the TID at the time t3 (time stamp) when the image data is taken, it is possible to charge accurately without misidentification.

In the process of FIG. 11, the accuracy can be further increased by confirming whether or not the license plate information associated with the TID matches that of the image data. Then, when the data does not match, the processing unit 402 records it in the seventh storage device 502 and charges based on the stored information.

In the above-mentioned example, the example in which the central device 40 recognizes the license plate information from the image data as an image has been described, but the present invention is not limited to this. For example, the roadside device 20 may allow the central device 40 to recognize the license plate information from the image data. In this case, the processing unit 205 of the roadside device 20 may store the license plate information in, for example, the fourth storage device 302 and transmit it to the central device 40. Further, when the license plate information cannot be recognized from the image data, the processing unit 205 may transmit information indicating that the license plate information could not be recognized to the central device 40.

As described above, according to the present embodiment, the image data is photographed during the period (time t1 to t2) during which the RFID information is received, and the photographed image data is stored in association with the RFID information. As a result, when receiving RFID, even if RFID information is received from a vehicle traveling on a toll road close to the toll road to be charged, the number plate information of the image data associated with this RFID information and the RFID information If the data of the first storage device 60 associated with is not matched, the central device 40 can prevent erroneous charging. Thereby, according to the present embodiment, it is possible to appropriately identify a passing vehicle on a toll road in which a transmission controller is not installed on the road and a charge is made by a combination of wireless communication and image capture.

(Modification example)
Next, a modified example of the above-described embodiment will be described. The RFID reading processing procedure performed by the roadside device 20 is the same as the processing of FIG.
The photographing process when the roadside device 20 recognizes the license plate information will be described. FIG. 12 is a flowchart of a shooting processing procedure performed by the roadside device 20 according to a modified example of the present embodiment.

(Steps S21 to S22) The processing unit 205 performs the processing of steps S21 to S22. After the processing, the processing unit 205 proceeds to the processing of step S25.

(Step S25) The processing unit 205 performs an image recognition process for recognizing license plate information from image data.

(Step S26) The processing unit 205 determines whether or not the license plate information can be recognized from the image data. When the processing unit 205 determines that the license plate information can be recognized from the image data (step S26; YES), the processing unit 205 proceeds to the process of step S27. When the processing unit 205 determines that the license plate information could not be recognized from the image data (step S26; NO), the processing unit 205 proceeds to the processing of step S28.

(Step S27) The processing unit 205 sets “Read” in NP1. After the processing, the processing unit 205 proceeds to the processing of step S29.
(Step S28) The processing unit 205 sets “Null” in NP1. After the processing, the processing unit 205 proceeds to the processing of step S29.

(Step S29) The processing unit 205 stores the image data, the shooting time t3, the PID, and the NP1 in the fourth storage device 302 in association with each other. The processing unit 205 transmits the information stored in the fourth storage device 302 to the central device 40 via the communication unit 206.

13 and 14 are flowcharts of processing procedure examples performed by the central device 40 according to the modified example of the present embodiment.

(Steps S31 to S32) The processing unit 402 performs the processing of steps S31 to S32. After the processing, the processing unit performs the processing of step S100.

(Step S100) The processing unit 402 determines whether or not there is a TID to be associated with the PID. When the processing unit 402 determines that there is a TID to be associated with the PID (step S100; YES), the processing unit 402 proceeds to the process of step S102 (FIG. 14). When the processing unit 402 determines that there is no TID to be associated with the PID (step S100; NO), the processing unit 402 proceeds to the processing of step S101.

(Step S101) The processing unit 402 creates a record by associating TID = "Null" and NP1 = "Null" with the communication start time t1 and the communication end time t2 in the PID. The processing unit 402 may create a record by associating the PID with TID = "Null", NP1 = "Null", and the communication end time t2.

The explanation will be continued by moving to FIG.
(Step S102) The processing unit 402 determines whether or not there is one TID to be associated with the PID. When the processing unit 402 determines that there is only one TID to be associated with the PID (step S102; YES), the processing unit 402 proceeds to the process of step S103. When the processing unit 402 determines that there is not one TID to be associated with the PID (step S102; NO), the processing unit 402 proceeds to the process of step S104.

(Step S103) The processing unit 402 creates a record in which the TID is associated with the PID. Specifically, the processing unit 402 creates a record by associating the TID with the shooting time t3 and the NP1 with the PID. After the processing, the processing unit 402 proceeds to the processing of step 109.

(Step S104) The processing unit 402 determines whether or not there are a plurality of TIDs to be associated with the PID. When the processing unit 402 determines that there are a plurality of TIDs to be associated with the PID (step S104; YES), the processing unit 402 proceeds to the process of step S106. When the processing unit 402 determines that there are not a plurality of TIDs to be associated with the PID (step S104; NO), the processing unit 402 proceeds to the process of step S105.

(Step S105) The processing unit 402 creates a record associated with the PID as TID = "Null". Specifically, the processing unit 402 creates a record by associating the PID with TID = "Null", the shooting time t3, and the NP1. After the processing, the processing unit 402 proceeds to the processing of step 109.

(Step S106) The processing unit 402 determines whether or not a plurality of vehicles have entered one communication area of interest based on the PID transmitted by the roadside device 20, the shooting time t3, the image data, and the license plate information. Determine. When the processing unit 402 determines that a plurality of vehicles are entering the one communication area of interest (step S106; NO), the processing unit 402 proceeds to the processing of step S108. When it is determined that a plurality of vehicles have not entered the one communication area of interest (step S106; YES), the processing unit 402 proceeds to the process of step S107.

(Step S107) The processing unit 402 creates a record associated with the PID. Specifically, the processing unit 402 uses a new registered TID, discards the other TID, and creates a record by associating the new TID with the shooting time T3 and the license plate information. After the processing, the processing unit 402 proceeds to the processing of step 109. The record creation performed in step S107 is performed assuming a vehicle having a plurality of tags.

(Step S108) The processing unit 402 branches the PIDs by the number of TIDs and creates a record associated with each. For example, when there are n vehicles, j = 1 to n. Then, the processing unit 402 sets the first record (PID ₁ , UID, shooting time t3, license plate information), ..., The jth record (PID _j , TID, shooting time t3, license plate information), ... ..., The nth record (PID _n , TID, shooting time t3, license plate information) is created. After the processing, the processing unit 402 proceeds to the processing of step 109. The record creation performed in step S108 is performed on the assumption that a plurality of vehicles have entered the communication area.

(Step S109) The processing unit 402 creates a DB (database) for each lane. The elements of the DB are (PID, TID, shooting time t3, license plate information). The processing unit 402 stores the DB in the storage device 50.

(Step S110) The processing unit 402 determines whether or not the same TID is detected within a predetermined time range of the shooting time t3 for each adjacent lane. When the processing unit 402 determines that the same TID is not detected within the predetermined time range of the shooting time t3 for each adjacent lane (step S110; NO), the processing unit 402 proceeds to the processing of step S112. When the processing unit 402 determines that the same TID has been detected within a predetermined time range of the shooting time t3 for each adjacent lane (step S110; YES), the processing unit 402 proceeds to the processing of step S111.

(Step S111) The processing unit 402 deletes the street record of the adjacent lane from the DB. After the processing, the processing unit proceeds to the processing of step S112. The process of step S11 is a process performed because the same TID is detected in duplicate even in the adjacent lane.

(Step S112) The processing unit 402 performs the billing process in the same manner as in step S40 (FIG. 11).

Note that steps S110 and S111 are processes for preventing double billing due to the detection of a plurality of one TID in the adjacent lane. If the processing of steps S110 and S111 is performed for each file of the day, even if the same vehicle passes through the same lane multiple times, the data will be deleted by the processing of step S111, so it is appropriate. You will not be able to charge. Therefore, in the process of step S110, a time constraint of being within a predetermined time range is provided. The predetermined time range is sufficiently shorter than the time during which the same vehicle can pass through the same lane a plurality of times.

As described above, according to the modified example, even when a four-wheeled vehicle and a two-wheeled vehicle travel in the communication area of one lane, the charge can be appropriately charged.

In each of the above-described embodiments, all or part of the various processing processes of the roadside device 20 and the central device 40 described above are stored in a computer-readable recording medium in the form of a program, and this program is stored. The above-mentioned various processes are performed by being read and executed by a computer. The computer-readable recording medium refers to a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Further, this computer program may be distributed to a computer via a communication line, and the computer receiving the distribution may execute the program.

The above program may be for realizing a part of the above-mentioned functions. Further, it may be a so-called difference file (difference program) that can realize the above-mentioned function in combination with a program already recorded in the computer system.

As described above, some embodiments according to the present invention have been described, but all of these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and variations thereof are included in the scope of the invention described in the claims and the equivalent scope thereof, as are included in the scope and gist of the invention.

1 ... Toll collection system 2 ... Vehicle 3 ... Wireless tag 4 ... License plate 10, 10-1, 10-2, 10-3, 10-n ... Sensor 12, 12-1, 12-2, 12-3, 12 -N ... RFID reading device 14, 14-1, 14-2, 14-2, 14-3, 14-n ... Imaging device 20 ... Roadside device 30 ... Storage device 40 ... Central device 50 ... Storage device 60 ... First Storage device 70 ... Second storage device 101, 101-1, 101-2, 102-3, 101-n ... Communication area 111 ... Communication start position 112 ... Shooting timing position 113 ... Communication end position 201, 202, 203 ... Acquisition unit 205 ... Processing unit 206 ... Communication unit 301 ... Third storage device 302 ... Fourth storage device 401 ... Communication unit 402 ... Processing unit 501 ... 6th storage device 502 ... 7th storage device 503 ... 8th storage device

Claims (11)

A photographing device that captures an image of the vehicle by using the detection of the vehicle as a trigger,
A tag information reading device provided in the same lane as the photographing device and acquiring tag information,
The communication start time and communication end time of one of the tag information are acquired, and for one image of the vehicle, the tag information of the period from the communication start time to the communication end time and the vehicle of the vehicle are displayed on the image of the vehicle. A processing unit that associates the shooting time of the image and transmits it to the central device that charges the vehicle.
Roadside device with. The processing unit transmits the identification information of the own device, the identification information of the lane, the shooting time, the tag information, the communication start time, and the communication end time to the central device. Item 2. The roadside device according to item 1. The processing unit extracts license plate information about the license plate of the vehicle from the image of the vehicle by image recognition, associates the extracted license plate information with the tag information, and transmits the extracted license plate information to the central device. The roadside device according to claim 2. A communication unit that receives from the roadside device information related to the image of the vehicle, the tag information of the period from the communication start time to the communication end time, and the shooting time of the image of the vehicle.
From the received tag information in the period from the communication start time to the communication end time, the tag information of the shooting time of the image of the vehicle is extracted, and the tag information of the shooting time is added to the image of the vehicle. A processing unit that associates and charges the vehicle based on the associated result,
Central device with. The fourth aspect of claim 4, wherein the processing unit extracts license plate information regarding the license plate of the vehicle from an image of the vehicle by image recognition, and charges the vehicle using the extracted license plate information. Central device. The claim that the processing unit associates information indicating that there is no tag information when there is no tag information to be associated with the image of the vehicle, and charges the vehicle based on the associated result. 4 or the central device according to claim 5. When the tag information to be associated with the image of the vehicle is n (n is an integer of 2 or more), the processing unit associates the image of the vehicle with each of the n tag information and obtains the result of the association. The central device according to claim 4 or 5, wherein the vehicle is charged based on the above. A shooting step of taking an image of the vehicle triggered by the detection of the vehicle,
A tag information reading device provided in the same lane as the photographing device has a tag information reading step for acquiring tag information, and
The processing unit acquires the communication start time and the communication end time of the tag information, and for the image of the vehicle, the tag information of the period from the communication start time to the communication end time is displayed on the image of the vehicle. And the processing step of associating the shooting time of the image of the vehicle with and transmitting the image to the central device that charges the vehicle.
Roadside device control method including. To the computer of the roadside device,
A shooting step of taking an image of the vehicle triggered by the detection of the vehicle,
Tag information reading step to get tag information and
The communication start time and communication end time of one of the tag information are acquired, and for one image of the vehicle, the tag information of the period from the communication start time to the communication end time and the vehicle of the vehicle are displayed on the image of the vehicle. A processing step of associating with the shooting time of the image and transmitting it to the central device that charges the vehicle, and
Roadside device control program to execute. A communication step in which the communication unit receives information from the roadside device in which the tag information of the period from the communication start time to the communication end time is associated with the image of the vehicle.
The processing unit extracts the tag information of the shooting time of the image of the vehicle from the tag information of the period from the received communication start time to the communication end time, and displays the shooting time on the vehicle image. A processing step of associating the tag information with the shooting time of an image of the vehicle and charging the vehicle based on the associated result.
Central device control method including. To the computer of the central unit,
A communication step that receives information from the roadside device in which tag information for the period from the communication start time to the communication end time is associated with the image of the vehicle.
From the tag information in the period from the received communication start time to the communication end time, the tag information of the shooting time of the image of the vehicle is extracted, and the tag information of the shooting time is added to the image of the vehicle. A processing step of associating the image of the vehicle with the shooting time and charging the vehicle based on the associated result.
Central device control program to execute.

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