JPH11224325A - Entry detection system and entry detection method - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To improve the security of an expressway by suppressing the entry of non-use vehicles on the expressway into a traffic lane at an entrance gate of the expressway by a simple method. SOLUTION: An ITV camera 2 for capturing an image near an entrance gate of a highway and an image processing unit 4 having an A / D conversion circuit convert an image signal captured from the ITV camera 2 into two.
The digital image is converted into a digital image. Thereafter, the video signal is successively image-processed and stored in the memory 8 at intervals of, for example, 3 seconds, and the digital image is subjected to pattern matching to calculate the similarity. A monitoring and control device 5 that outputs a warning signal when is less than or equal to a predetermined set value;
Provided is an approach detection system including an internal operation display 6 and an external warning transmitter 7 that generate a visible warning display and a warning sound such as a buzzer sound when a warning signal is input.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an approach detection system and an approach detection method used at, for example, an entrance gate of a toll road.

[0002]

2. Description of the Related Art Generally, on a toll road such as an expressway, a magnetic card on which interchange information is recorded is issued as a pass ticket to a driver of a vehicle using the toll road at an entrance gate. At the exit gate, pass the toll ticket held by the driver of the vehicle through a magnetic card reader,
The information on the interchange at the entrance is read to calculate the toll, and the amount is presented to the driver, and the toll is collected by cash, a highway card, or the like.

[0003] By the way, on an expressway adopting such a form of toll collection, at the entrance gate, processing is merely to provide a toll ticket to the driver of the vehicle. Issuing machines are installed, and the number of employees at the entrance gate is reduced or unmanned. However, if such a management system is changed, regulations when passing through the entrance gate will be reduced, and vehicles driven by drivers who do not realize that the entrance gate is the entrance of the highway will be There is a possibility that the vehicle may pass through an entrance gate and enter a driving lane, leading to a traffic accident or the like. Therefore, a monitor for monitoring is installed at a gate at an entrance of a highway or the like in order to suppress entry of non-use vehicles on the highway, and monitoring is performed while keeping a monitoring person as much as possible.

[0004]

However, when trying to suppress the entry of non-utilized vehicles into the expressway using this monitor for monitoring, the guard at the entrance gate requires:
It was necessary to constantly monitor through a monitor whether or not there was entry of an unused vehicle. Of course, it was impossible to suppress the entry of an unused vehicle without a supervisor. In addition, the entrance gate is generally provided with a plurality of passing lanes of the vehicle, but, for example, if the number of personnel is reduced and one supervisor monitors each lane, However, if a plurality of monitors displaying the status of each lane are constantly monitored and a vehicle approaching the vehicle is found at the same time, it is necessary to deal with it alone, resulting in a very severe labor situation.

The present invention has been made in order to solve such a problem. For example, at an entrance gate of an expressway, a non-use vehicle of an expressway enters a travel lane by a simple method. It is an object of the present invention to provide an approach detection system and an approach detection method that can suppress traffic and improve the security of an expressway.

[0006]

In order to achieve the above object, an approach detection system according to the present invention is provided on a passage of a vehicle and issues a toll ticket for the vehicle. Issuer, setting means for setting permission and non-permission of entry of the vehicle into the passage provided with the issuer, and when the entry of the vehicle is set to be disallowed by the setting means, Image data generating means for photographing an image of a vehicle passing through the issuing machine at predetermined time intervals to generate image data; comparing means for comparing image data sequentially generated by the image data generating means; A determination unit configured to determine that the vehicle is entering a passage where entry of the vehicle is not permitted when the image data changes based on the comparison result.

According to a second aspect of the present invention, there is provided the approach detection system according to the first aspect, wherein the setting means sets the entry of the vehicle to be prohibited. And a control unit for stopping the issuing of the issuing machine.

Further, according to a third aspect of the present invention, in the approach detection system according to the first aspect, when the setting means permits the approach of the vehicle, It is characterized in that control means is provided for not operating the comparing means.

According to a fourth aspect of the present invention, there is provided an approach detecting system provided on a passage of a vehicle for issuing a toll ticket for a vehicle, and the issuing system including the issuing machine. Setting means for setting permission and non-permission of entry of a vehicle into a passage; image data generation means for taking an image of a vehicle passing through the issuing machine at predetermined time intervals to generate image data; Comparing means for comparing the image data sequentially generated by the means, and first control means for operating the issuing machine and not operating the comparing means when the vehicle is allowed to enter by the setting means. A second control unit for suspending the operation of the issuing machine and operating the comparison unit when the entry of the vehicle is set to be disallowed by the setting unit; Under the control of the stage, when there is a change in the image data by by comparing the comparison means,
A determining means for determining that the vehicle is entering a passage in which the vehicle is not permitted; and a determination result indicating that the vehicle is entering is displayed and output when the determining means determines that the vehicle is entering. And a display output unit.

Further, according to a fifth aspect of the present invention, there is provided an approach for detecting whether an entry of a vehicle into a passage is permitted or not. Issuance of a toll ticket for vehicles entering,
When entry of the vehicle is set to be disallowed, an image of the vehicle entering the passage is taken at predetermined time intervals to generate image data, and the sequentially generated image data is compared. It is characterized in that it is determined whether or not the data has changed, and when it is determined that the image data has changed, it is determined that the vehicle has entered a passage in which the vehicle is not allowed to enter.

[0011] Further, according to a sixth aspect of the present invention, in the approach detection method of the fifth aspect, a toll ticket is issued when entry of a vehicle is set to be prohibited. The feature is to stop.

Further, the approach detection method according to the present invention is described in claim 7.
In the approach detection method according to the fifth aspect, when the approach of the vehicle is set to be permitted, the generated image data is not compared.

Further, according to the present invention, as set forth in claim 8, permission and non-permission of entry of a vehicle into a passage are set, and when entry of the vehicle is set to allow. Issuance of a toll ticket for vehicles entering,
When the entry of the vehicle is set to be disallowed, the issuance of the toll ticket is stopped, and when the entry of the vehicle is set to be disallowed, an image of the vehicle entering the passage is taken at predetermined time intervals, and image data is taken. Is generated, and the sequentially generated image data is compared. Based on the comparison, it is determined whether or not the image data has changed.When it is determined that the image data has changed, entry of the vehicle is set to be prohibited. It is characterized in that a judgment is made that the vehicle has entered the aisle and the result of the judgment that the vehicle has entered is displayed and output when it is judged that the vehicle has entered.

According to the present invention, a warning by a visual display is issued when, for example, a video near the issuing machine changes when entry of the vehicle into a certain passage of the issuing machine is prohibited. Can be generated. Therefore, if these inventions are used for, for example, an entrance gate of an expressway, etc., when an unused vehicle on the expressway tries to enter the travel lane through the entrance gate when the entrance gate is closed or the like, the entrance gate is closed. The driver of the vehicle about to pass,
Or it is possible to alert the guards at the entrance gate, etc., so that a vehicle driven by a driver who does not realize that it is the entrance of the highway enters the driving lane and It is possible to suppress the occurrence.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram schematically showing an approach detection system according to an embodiment of the present invention, and FIG. 2 is a block diagram thereof.

As shown in these figures, this approach detection system issues a toll ticket magnetically recorded with entrance gate information for identifying an interchange for a vehicle provided near the lane and passing through the entrance gate. Automatic ticket issuing machine 1, operation status of automatic ticket issuing machine 1, ITV (industrial television) camera 2 for photographing a vehicle passing through automatic ticket issuing machine 1, and traffic arranged in entrance booth 3 A monitoring control unit 5 having an image processing unit 4 and taking in a video signal sent from the ITV camera 2 and taking image processing, and an image recording device such as a VTR are provided. An internal operation display 6 having a monitor capable of individually displaying images of four lanes of the entrance gate, which have been image-processed by the monitoring control device 5;
An external warning transmitter 7 that warns an intruder or a vehicle entering the traveling lane through the passing lane even though the lane passing through the entrance gate is closed. I have.

The automatic toll ticket issuing machine 1 detects the entry of a vehicle in the lane passing through the entrance gate, issues a toll ticket to the vehicle, and switches on or off a red signal or a green signal in accordance with the timing of the issuance of the toll ticket. Restricts straight ahead of vehicles. In addition, the open mode as a normal operating state in which vehicles using the expressway are allowed to enter the driving lane through the passing lane of the entrance gate, and the vehicle is prohibited from entering the driving lane. The closed mode as an emergency state can be switched by setting. In the closed mode, a toll ticket is not issued even when a vehicle is detected in the lane passing through the entrance gate, and the red signal remains lit. Further, the automatic toll ticket issuing machine 1 monitors and controls the operation status such as jamming of the toll ticket, failure or the like at the time of issuance of the toll ticket, or an open / close mode such as an open mode / close mode.
To be transmitted.

The monitoring control device 5 captures the video signal of the lane passing through the entrance gate transmitted from the ITV camera 2, and converts the captured video signal into an analog-to-digital (analog to digital) signal.
tal conversion) is binarized by the image processing unit 4 having a circuit and displayed on the LCD display of the internal operation display 6 as a digital image.

The monitoring and control device 5 has the following condition that the setting of the automatic ticket issuing machine 1 is in the closed mode and that the setting of the internal operation display 6 described later is in the non-maintenance mode. Control related to the entry check as described above.

That is, the monitoring control device 5 stores the digital image processed by the image processing section 4 in the memory 8, and then sequentially processes the video signal at intervals of, for example, 3 seconds and stores the processed image in the memory 8. Go. Further, the monitoring control device 5
Performs a pattern matching of each digital image stored in the memory 8 and performs an operation related to similarity. If the similarity is equal to or less than a predetermined value, it is determined that the digital image has changed. It determines that a vehicle is present and outputs a warning signal to the internal operation display 6 and the external warning transmitter 7.

The internal operation display unit 6 is provided with a maintenance mode in which an observer monitors the lane passing through the entrance gate through a monitor or the like without performing control for causing the monitoring control device 5 to transmit a warning signal. A non-maintenance mode, which is mainly a mechanical monitoring system for controlling the monitoring control device 5 to transmit a warning signal when an intruder or an intruding vehicle trying to pass through the entrance gate passing lane exists. The monitoring mode signal can be switched by setting, and this monitoring mode signal is transmitted to the monitoring control device 5. When a warning signal from the monitoring control device 5 is input, the internal operation display 6 generates a warning sound such as a buzzer sound for a set predetermined time, and displays a message such as "vehicle in approach" on the LCD. Display on the display.

When a warning signal from the monitoring and control device 5 is input, the external warning transmitter 7 displays characters such as entry prohibition by an LED or the like for a few minutes from the moment the warning signal is input, for example. Generates an audible alarm.

The operation of the approach detection system thus configured will be described with reference to the flowchart shown in FIG.

First, based on the open / close mode signal transmitted from the automatic ticket issuing machine 1, the monitoring controller 5 checks whether the lane passing through the entrance gate is in the open mode or the closed mode. That is, when the lane passing through the entrance gate is in the open mode, vehicles using the expressway enter sequentially, so that the entry check is not performed. When the lane passing through the gate is in the closed mode, the entry check is performed. (S1). Further, the monitoring control device 5 confirms whether the setting of the internal operation display 6 is the maintenance mode or the non-maintenance mode (S).
2). In other words, in the maintenance mode, since the observer in the booth at the entrance gate artificially monitors the lane passing through the entrance gate through a monitor or the like, the entry check in the entry detection system is not performed. Next, in the non-maintenance mode, the monitoring controller 5 stores the digital image processed by the image processing unit 4 in the memory 8, and thereafter performs image processing of the video signal one after another at intervals of 3 seconds. 8 is stored. Further, the monitoring control device 5 performs pattern matching of each digital image stored in the memory 8, and further performs an arithmetic operation on similarity to determine whether or not the similarity is equal to or less than a predetermined set value ( S3). At this time, if the similarity is equal to or less than a predetermined set value, it is determined that the digital image has changed, that is, it is determined that there is an intruder or an intruding vehicle that attempts to enter the driving lane through the entrance gate lane. The internal operation display 6
And a warning signal to the external warning display 7.
The internal operation display 6 to which the warning signal has been input generates a warning sound such as a buzzer sound, and displays a message such as "vehicle in approach" on the LCD display.
On the other hand, the external warning display 7 to which a warning signal is similarly input
Displays an entry-prohibited character or the like with an LED or the like and generates a warning sound (S4).

As described above, according to the approach detection system of the present embodiment, when there is a change in the image near the entrance gate through which the vehicle passes, a warning sound such as a buzzer sound or a visual warning is displayed. Etc. can be generated. Therefore, when a non-use vehicle on the highway passes through the entrance gate and enters the traveling lane when the entrance gate is closed, the driver of the vehicle trying to pass through the entrance gate,
Or it is possible to alert the guards at the entrance gate, etc., so that a vehicle driven by a driver who does not realize that it is the entrance of the highway enters the driving lane and It is possible to suppress the occurrence.

Further, since the video near the entrance gate can be stored and stored in a video recording device such as a VTR, it is possible to capture the video of a vehicle or the like attempting to illegally use an expressway, etc. Is automatically stopped after the elapse of a predetermined set time, so that employees at the entrance gate can be unmanned.

In this embodiment, the case where the approach detection system is used only for improving the security of an expressway has been described. However, this system is not particularly limited for the purpose of use. Needless to say, it may be used as an anti-theft system or the like.

[0029]

As described above, according to the present invention,
When entry of the vehicle into the passage with the issuing machine is set to be not permitted, for example, when there is a change in the image near the issuing machine, a warning can be generated by a visual display. Therefore, if these inventions are used for, for example, an entrance gate of an expressway, etc., when an unused vehicle on the expressway tries to enter the travel lane through the entrance gate when the entrance gate is closed or the like, the entrance gate is closed. It is possible to call attention to the driver of the vehicle trying to pass or the guard of the entrance gate, so that a vehicle driven by a driver who does not realize that it is an entrance to the highway It is possible to prevent the vehicle from entering the lane and causing a traffic accident, for example.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing an approach detection system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing the approach detection system of FIG. 1;

FIG. 3 is a flowchart showing the operation of the approach detection system of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Automatic ticket issuing machine 2 ... ITV camera 3 ... Entrance booth 4 ... Image processing unit 5 ... Surveillance control unit 6 ... Internal operation display unit 7 ... External warning display unit 8 ... Memory

Claims (8)

[Claims] An issuing machine that is provided on a passage of a vehicle and issues a toll ticket for the vehicle; setting means for setting permission and non-permission of entry of the vehicle into the passage where the issuing machine is provided; Image data generating means for generating image data by photographing an image of the vehicle passing through the issuing machine at predetermined time intervals when the entry of the vehicle is set to be disallowed by the setting means; Comparing means for comparing image data sequentially generated by the means, and judging means for judging that the vehicle has entered a path in which entry of the vehicle is not permitted when the image data changes based on the comparison result of the comparing means. An entry detection system comprising: 2. The approach detection system according to claim 1, further comprising control means for stopping the issuance of the issuing machine when the setting means has set the approach of the vehicle to be disallowed. Intrusion detection system. 3. The approach detection system according to claim 1, further comprising control means for not operating said comparison means when said setting means permits the approach of said vehicle. . 4. An issuing machine provided on a passage of a vehicle and issuing a toll ticket for the vehicle; setting means for setting permission and non-permission of entry of the vehicle into the passage where the issuing machine is provided; An image data generating unit that captures an image of a vehicle passing through the issuing machine at predetermined time intervals to generate image data; a comparing unit that compares image data sequentially generated by the image data generating unit; A first control unit that operates the issuing machine and does not operate the comparison unit when the vehicle is permitted to enter; and when the vehicle entry is set to be disallowed by the setting unit. A second control means for suspending the operation of the issuing machine and operating the comparison means; and an image data obtained by comparison by the comparison means based on control by the second control means. When there is a change in the vehicle, when it is determined that the vehicle is entering the passage in which the vehicle is not permitted,
And a display output means for displaying and outputting a determination result indicating that the vehicle is approaching. 5. Permission and non-permission of entry of a vehicle into a passage are set, and when entry of the vehicle is set to permission, a toll ticket is issued for the entering vehicle, and entry of the vehicle is prohibited. When set, the image of the vehicle entering the passage is photographed at predetermined time intervals to generate image data, the sequentially generated image data is compared, and based on the comparison, whether or not the image data has changed is determined. And when it is determined that the image data has changed, it is determined that the vehicle is entering a passage in which entry of the vehicle is not permitted. 6. The approach detection method according to claim 5, wherein the issuance of a toll ticket is stopped when entry of the vehicle is set to be prohibited. 7. The approach detection method according to claim 5, wherein when the approach of the vehicle is set to be permitted, the generated image data is not compared. 8. Permission and non-permission of entry of a vehicle into a passage are set, and when entry of the vehicle is set to be permitted, a toll ticket is issued for the entering vehicle, and entry of the vehicle is prohibited. When the setting is set, the issuance of the toll ticket is stopped, and when the entry of the vehicle is set to be disallowed, the image of the vehicle entering the passage is photographed at predetermined time intervals, and image data is generated. Comparing the image data, and determining whether or not the image data has changed based on the comparison. When determining that the image data has changed, the vehicle enters a passage in which the vehicle is set to be prohibited. An approach detection method characterized in that, when it is determined that the vehicle is approaching, a result of the determination that the vehicle is approaching is displayed and output.