JP5996379B2 - Vehicle entry / exit management device - Google Patents

Description

  The present invention relates to a vehicle entrance / exit management device in a vehicle entrance / exit management device in a parking lot that allows entry / exit of only a pre-registered vehicle and enables strict vehicle management and smooth entrance / exit.

  2. Description of the Related Art Conventionally, for example, a parking lot management device disclosed in Patent Document 1 below is known as a device that regulates entry / exit of a vehicle to / from a parking lot. In the parking lot management apparatus disclosed in Patent Document 1, vehicle identification information (a place name, a classification number, a hiragana, and a series designation number) on a vehicle license plate is recognized from an image acquired by a camera, and the recognized vehicle identification information and The vehicle identification information registered in advance is collated to determine whether or not the vehicle to be entered is registered in advance, and the gate bar of the parking lot is controlled based on the determination result. doing.

  In the reading of the vehicle identification information on the license plate from the image of such a camera, the reading accuracy of the vehicle identification information on the license plate becomes a problem, but a camera is provided on the gate bar for the purpose of taking a picture clearly. Such a parking lot management system is disclosed in Patent Document 2 below.

  According to the parking lot management system of Patent Document 2, it is possible to photograph the vehicle from the front with a camera provided on the gate bar, so that the vehicle identification information on the license plate can be clearly recognized.

JP-A-5-35740 JP-A-1-213778

  However, in the parking lot management system disclosed in Patent Document 2, the shooting range of the camera deviates from the range in which the vehicle can be captured in the front while the gate bar is opened to allow the vehicle to pass. Under such circumstances, when a subsequent vehicle arrives, the vehicle identification information on the license plate cannot be recognized until the gate bar is closed. As a result, there is a problem in that the subsequent vehicle stays without passing through the gate bar, which hinders smooth passage of the vehicle.

  Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle entrance / exit management device that makes vehicle management strict and enables smooth entrance / exit.

In order to achieve the above-described object, a vehicle entrance / exit management device according to claim 1 of the present application is a vehicle entrance / exit management device that regulates the passage of vehicles by a gate bar.
Vehicle detection means for detecting the vehicle;
A first camera installed on the gate bar for imaging the vehicle from the front direction;
A second camera installed at a different position from the gate bar;
Read the vehicle identification information on the license plate of the vehicle from the image acquired from the first camera or the second camera, and determine whether the vehicle identification information matches the vehicle identification information stored in advance. Recognition processing means;
Control means for allowing the vehicle to pass when the vehicle identification information matches, and controlling to open the gate bar;
The control means acquires an image from the first camera when the gate bar is in a closed state, and switches from the first camera to the second camera when the gate bar is in an open state. An image is acquired from the second camera.

The vehicle entrance / exit management device according to claim 2 of the present application is the vehicle entrance / exit management device according to claim 1,
When the control means continues to determine that the vehicle following the vehicle permitted to pass is a pre-registered vehicle when the gate bar is in the open state, the vehicle preceding the preceding vehicle is preceded. Even if the vehicle detection means detects the passage of the vehicle, the gate bar is controlled not to be closed until the vehicle detection means detects the passage of the following vehicle.

The vehicle entrance / exit management device according to claim 3 of the present application is the vehicle entrance / exit management device according to claim 1 or 2,
The gate bar has a shake detection sensor for detecting its own shake,
The control means is characterized in that when the shake detection sensor detects a shake greater than or equal to a predetermined value, the control means controls to acquire an image from the second camera even when the gate bar is in a closed state.

The vehicle entrance / exit management device according to claim 4 of the present application is the vehicle entrance / exit management device according to any one of claims 1 to 3,
The gate bar has an illumination part,
The control means controls the lighting section to emit light when the vehicle detection means detects a vehicle.

The vehicle entrance / exit management device according to claim 5 of the present application is the vehicle entrance / exit management device according to any one of claims 1 to 3,
The control means is characterized in that when the image is acquired by the second camera, the vehicle matching information matching condition is set more strictly than when the image is acquired by the first camera.

  According to the vehicle entrance / exit management device according to the present invention, a clear image is obtained by capturing the vehicle identification information on the license plate of a vehicle about to enter or leave the parking lot from the front with the first camera installed on the gate bar. Can be acquired. In addition, even when the gate bar is open, if it is detected that the subsequent vehicle continues later, the vehicle identification information on the license plate of the subsequent vehicle is detected by a second camera different from the first camera provided on the gate bar. Therefore, smooth traffic management of the vehicle becomes possible.

  According to the vehicle entrance / exit management device according to claim 2 of the present application, when it is determined that the following vehicle is a registered vehicle when the gate bar is in the open state, a vehicle permitted to travel in front of the following vehicle ( Even if the passage of the first vehicle is detected, the gate bar is controlled not to be closed until the passage of the following vehicle is detected, so that the vehicle can be smoothly passed without the subsequent vehicle being retained by the gate bar.

  According to the vehicle entrance / exit management device according to claim 3 of the present application, when the shake detection sensor detects a shake greater than or equal to a predetermined value, control is performed so as to acquire an image from the second camera regardless of opening and closing of the gate bar. It is possible to prevent malfunction when the gate bar itself vibrates.

  According to the vehicle entrance / exit management device according to claim 4 of the present application, the illumination unit is provided on the gate bar, and the illumination unit emits light when the vehicle is detected. Therefore, the vehicle number can be obtained even in bad weather such as backlight, night, and rain. The vehicle identification information on the plate can be obtained clearly.

  According to the vehicle entrance / exit management device according to claim 5 of the present application, when the image is acquired by the second camera, the matching condition of the vehicle identification information is set more strictly than when the image is acquired by the first camera. Therefore, for the succeeding vehicle, even if the matching process by the second camera under the matching condition set more strictly than the first camera fails, the matching process can be performed by the first camera after the gate bar is closed. it can.

It is a perspective view which shows the external appearance of the vehicle entrance / exit management apparatus which concerns on this invention. It is the top view which looked down at the installation state of the vehicle entrance / exit management apparatus which concerns on this invention. It is a block block diagram of the vehicle entrance / exit management device according to the present invention. It is a flowchart which shows the operation | movement of the opening / closing control of the gate bar at the time of the vehicle entrance by the vehicle entrance / exit management apparatus which concerns on this invention.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. In addition, the present invention is not limited by this embodiment, and all other forms, examples, operation techniques, and the like that can be implemented by those skilled in the art based on this form are included in the scope of the present invention. .

  The vehicle entry / exit management device according to the present invention is applied to a parking lot that allows entry / exit of only vehicles registered in advance, and makes vehicle management stricter and enables smooth entry / exit of vehicles. is there.

  First, the outline | summary of the vehicle entrance / exit management apparatus 1 is demonstrated, referring FIG.1 and FIG.2. The vehicle entrance / exit management device 1 is installed at an entrance / exit of a parking lot. In this embodiment, the case where the vehicle enters the parking lot will be described, but the operation is the same when the vehicle leaves.

  As shown in FIG. 1, the gate body 2 is provided with a gate bar 3 that restricts the passage of the vehicle by opening and closing. The gate bar 3 is provided with a first image pickup device 4 for photographing a vehicle entering the parking lot from the front direction and recognizing vehicle identification information on a license plate of the vehicle. The vehicle identification information is information for identifying the vehicle, and includes a place name, a classification number, a hiragana, and a series of designated numbers. The gate body 2 is provided with a second imaging device 5 that recognizes vehicle identification information on a vehicle license plate from a different position from the first imaging device 4. Further, the gate body 2 is provided with a vehicle detection unit 6 that detects the presence of a vehicle, and the approach, stop, and passage of the vehicle are determined based on information obtained from the vehicle detection unit 6.

  FIG. 2 is a plan view overlooking the installation state of the vehicle entrance / exit management device 1. In FIG. 2, a vehicle traffic regulation portion 13 is provided outside the parking lot and near the base end portion of the gate bar 3 so as to extend in a direction substantially perpendicular to the gate bar 3. The vehicle traffic regulation unit 13 is formed of, for example, a linear roadside belt having a step, and a vehicle that has entered the monitoring area S indicated by the oblique lines in FIG. 2 travels in the direction of arrow A in FIG. 2 and parks from the front of the gate bar 3. Vehicle traffic is restricted to enter the car park. When the vehicle detection unit 6 detects a vehicle (leading vehicle) that enters the monitoring area S and stops near the gate bar 3 in order to enter the parking lot, the first imaging device 4 built in the gate bar 3 When the vehicle identification information is recognized and the recognized vehicle identification information is registered in advance, the vehicle is permitted to pass and the gate bar 3 is opened to allow the vehicle to enter. At that time, immediately before the gate bar 3 is opened, the image input is switched to the second imaging device 5 built in the gate body 2. In this state, if the vehicle detection unit 6 detects a subsequent vehicle in the monitoring area S, the vehicle identification information recognition process is started. If the vehicle identification information of the subsequent vehicle matches that registered in advance, Keep the gate bar 3 open until the vehicle passes. Thereby, the smooth passage of the vehicle can be managed without causing the vehicle to stay at the gate bar 3.

  Next, each component of the vehicle entrance / exit management device 1 according to the present embodiment will be described with reference to FIG.

  As shown in FIG. 3, the vehicle entrance / exit management device 1 includes a gate body 2, a gate bar 3, a first imaging device 4, a second imaging device 5, a vehicle detection unit 6, a gate opening / closing control unit 7, and a recognition processing unit. 8, a storage unit 9, a switching unit 10, a shake detection sensor 11, and a control unit 12.

  The gate body 2 includes a second imaging device 5, a vehicle detection unit 6, and a gate opening / closing control unit 7. The configuration related to the vehicle identification information recognition process may be provided separately from the gate body 2.

  The gate bar 3 is a means for restricting the passage of the vehicle, and the first imaging device 4 and the shake detection sensor 11 are internally provided.

  The first imaging device 4 includes a first illumination unit 4 a and a first camera 4 b that are housed in the gate bar 3. The 1st illumination part 4a is comprised by illumination apparatuses, such as LED, for example. When the vehicle detection unit 6 detects a vehicle (leading vehicle) traveling into the monitoring area S and traveling toward the gate bar 3, the first illumination unit 4a clearly displays the license plate image of the vehicle. Lights up under the control of the control unit 12 so that it can be acquired.

  In addition, although not illustrated, it is good also as a structure which provides the illumination intensity sensor which detects the illumination intensity of the 1st illumination part 4a. In this case, the first illuminating unit 4a is a vehicle in which the illuminance by the illuminance sensor is equal to or lower than a preset reference illuminance, and the vehicle detection unit 6 enters the monitoring area S and travels toward the gate bar 3 ( Lights up under the control of the control unit 12 when the first vehicle) is detected.

  The first camera 4b has a vehicle detection unit 6 that captures an image of the vehicle (leading vehicle) that enters the monitoring area S and travels toward the gate bar 3 from the front and outputs the image to the control unit 12. It comprises a camera that functions as an imaging means for reading vehicle identification information on the detected vehicle license plate. The imaging range of the first camera 4b is such that when a vehicle image is acquired from the front when the gate bar 3 is closed, the vehicle stops in the vicinity of the gate bar 3 after a predetermined time from entering the monitoring area S of FIG. When this is done, the license plate is set to be larger than a predetermined size and fit in the image. Since the first camera 4b is housed in the gate bar 3, a high recognition rate of vehicle identification information can be obtained even in bad weather such as backlight, nighttime, and rain.

  The second imaging device 5 includes a second illumination unit 5 a and a second camera 5 b that are housed in the gate body 2. The 2nd illumination part 5a is comprised by illumination apparatuses, such as LED, for example. When the vehicle detection unit 6 detects a subsequent vehicle entering the monitoring area S, the second illumination unit 5a is controlled by the control unit 12 so that the license plate image of the subsequent vehicle can be clearly obtained. Light.

  In addition, although not illustrated, it is good also as a structure which provides the illumination intensity sensor which detects the illumination intensity of the 2nd illumination part 5a. In this case, the second illuminating unit 5a is configured such that when the illuminance by the illuminance sensor is equal to or lower than a preset reference illuminance and the vehicle detection unit 6 detects a subsequent vehicle entering the monitoring area S, Lights by control.

  The second camera 5b is provided separately so as to acquire an image of a subsequent vehicle entering the monitoring area S from a position different from that of the first camera 4b. The second camera 5b of this example is built in the gate body 2 and functions as an image pickup means for reading vehicle identification information on a license plate of a subsequent vehicle entering the monitoring area S detected by the vehicle detection unit 6. Consists of a camera. The second camera 5b can be of the same type as the first camera 4b. The imaging range of the second camera 5b is such that the license plate of the subsequent vehicle entering the monitoring area S is larger than a predetermined size and fits in the image when acquiring the image of the subsequent vehicle when the gate bar 3 is open. Is set. Since the second camera 5b captures an image from the diagonally upper side of the subsequent vehicle while the first camera 4b captures an image from the front of the vehicle, the second camera 5b captures the image of the subsequent vehicle captured from the diagonally upper side. The image correction processing for converting the image into the image seen from the above is performed as necessary.

  The second camera 5b is not limited to the configuration housed in the gate body 2, but can be provided on a structure fixedly installed on the ground, and at a position where the license plate image of the subsequent vehicle in the monitoring area S can be acquired. What is necessary is just to be provided.

  The vehicle detection unit 6 is configured by a laser sensor that detects an object by scanning and transmitting and receiving a laser beam horizontally at a predetermined cycle over the range of the monitoring area S. The vehicle detection unit 6 detects the position of the vehicle entering the monitoring area S, the distance to the vehicle, the passage of the vehicle, and the like, and outputs the detection result to the control unit 12.

  As the vehicle detection unit 6, a microwave sensor, an ultrasonic sensor, an image sensor, or the like can be used instead of the laser sensor. Further, in the case of detecting a vehicle with higher accuracy, as shown in FIG. 1, in addition to the vehicle detection unit 6 (6A) constituted by a laser sensor, a narrow range near the gate bar 3 in the monitoring area S is used. On the other hand, a vehicle detection unit 6 (6B) including a beam sensor that detects an object by scanning and transmitting and receiving a laser beam linearly at a predetermined cycle may be separately provided as necessary.

  The gate opening / closing control unit 7 is a means for controlling the opening / closing of the gate bar 3 in response to an opening / closing control instruction from the control unit 12, and includes a drive motor for driving the gate bar 3 (not shown), a drive control unit for controlling the drive motor, and a gate bar. 3 is configured by a speed control unit for controlling the opening and closing speed.

  The recognition processing unit 8 extracts the license plate portion of the vehicle (first vehicle, subsequent vehicle) from the images acquired from the first camera 4b and the second camera 5b, and character-recognizes the vehicle identification information on the license plate. Whether the information is registered in advance or not is output to the control unit 12. The vehicle identification information can be extracted as a character pattern by extracting the number plate portion from the input images from the cameras 4b and 5b and binarizing the pixels of the extracted number plate portion. About this vehicle identification information recognition processing technique, a well-known method can be used, and since it is not the principal part of this invention, description is abbreviate | omitted.

  The storage unit 9 stores vehicle identification information (a place name, a classification number, a hiragana, and a series designation number) of a vehicle that permits entry to a pre-registered parking lot. Further, the storage unit 9 stores traffic history information (date and time, acquired image, vehicle number, name, etc.) of the vehicle that has passed through the gate bar 3 under the control of the control unit 12.

  Note that the recognition processing unit 8 and the storage unit 9 may be incorporated in the gate body 2 or may be realized as a program executed by an external terminal device such as a personal computer connected via a LAN.

  Based on the switching instruction from the control unit 12, the switching unit 10 switches the camera for inputting an image to the first camera 4 b or the second camera 5 b. Specifically, the normal setting is such that the input image from the front is obtained from the image from the first camera 4 b installed on the gate bar 3 and processed by the recognition processing unit 8. On the other hand, when the gate bar 3 is open or when the gate bar 3 is severely shaken by wind or the like, the input image from the second camera 5b is acquired and processed by the recognition processing unit 8.

  The shake detection sensor 11 is composed of, for example, an acceleration sensor or a speed sensor, and is built in the gate bar 3. The shake detection sensor 11 detects a shake (vibration component) of the gate bar 3 itself and outputs the detection result to the control unit 12. .

  The controller 12 controls the entire vehicle entrance / exit management device 1. Specifically, the control unit 12 determines the presence / absence of a vehicle approaching the gate bar 3, the stop of the vehicle, and the passage of the gate based on the detection result of the vehicle detection unit 6. Further, the control unit 12 outputs an opening / closing control instruction to the gate opening / closing control unit 7 based on the determination result and the recognition processing result of the image acquired from the cameras 4b and 5b. Furthermore, when the control unit 12 determines that the vibration component based on the detection result from the shake detection sensor 11 exceeds a preset threshold value and image recognition by the first camera 4b is difficult, the control unit 12 notifies the switching unit 10 to the second camera 5b. The switching instruction is output so as to switch to the input from. Moreover, the control part 12 controls lighting of the 1st illumination part 4a and the 2nd illumination part 5a by the detection result of the vehicle detection part 6, and the detection result of an illuminance sensor not shown.

  Next, the operation at the time of opening / closing control of the gate bar 3 when the vehicle enters from the entrance of the parking lot by the vehicle entrance / exit management device 1 configured as described above will be described with reference to the flowchart of FIG. In the initial state, the switching unit 10 is switched to the first camera 4b side.

  First, in step S010 of FIG. 4, it is detected whether or not there is a vehicle (leading vehicle) that approaches within a predetermined distance from the gate bar 10. That is, as shown by an arrow A in FIG. 2, it is detected whether there is a vehicle that enters the monitoring area S and stops near the gate bar 10. The vehicle detection is performed by the vehicle detection unit 6 (laser sensor) at a predetermined cycle. When it is determined that there is no vehicle approaching within a predetermined distance from the gate bar 10 (S010-N), this vehicle detection process is repeated.

  On the other hand, when it is determined that there is a vehicle approaching within a predetermined distance from the gate bar 3 (S010-Y), an image captured by the first camera 4b is acquired in step S020, and the recognition processing unit 8 is acquired from the acquired image. The vehicle identification information on the license plate of the vehicle (leading vehicle) is recognized at.

  Next, in step S030, the recognition processing unit 8 collates the vehicle identification information recognized in step S020 with the vehicle identification information registered in the storage unit 9 in advance. If the recognized vehicle identification information matches the registered vehicle identification information and it is determined that the verification is OK (S030-Y), the process proceeds to step S040. On the other hand, if the recognized vehicle identification information and the registered vehicle identification information do not match and it is determined as collation NG (S030-N), the process proceeds to step S120.

  In step S120, since the vehicle identification information may not be read for some reason, authentication by other verification processing is performed. Other verification processes include, for example, a security code input device on the gate body 2, and a security code input by a numeric keypad operation of the security code input device, an authentication means using a non-contact card, an interphone, etc. This can be realized by providing a rescue means such as contacting the administrator and having the gate bar 3 opened remotely. If the authentication can be normally performed by this other verification process and it is determined that the verification is OK (S120-Y), the process proceeds to step S040. On the other hand, if the authentication cannot be normally performed and it is determined that the verification is NG (S120-N), it is determined that the verification is impossible, and the authentication by the other verification process is terminated.

  If it is determined that the collation is OK in step S030, the switching unit 10 is switched to change the camera for inputting an image from the first camera 4b to the second camera 5b (step S040), and the gate opening / closing is instructed by an opening / closing control instruction from the control unit 12 The control unit 7 controls to open the gate bar 3 (step S050).

  Next, in step S060, it is determined from the detection result of the vehicle detector 6 (beam sensor) whether or not the vehicle that has been verified passes through the gate bar 3. If it is determined that the vehicle that has been verified is passed through the gate bar 3 (S60-Y), the process proceeds to step S070. Here, when the vehicle to be verified passes through the gate bar 3, the control unit 12 outputs an opening / closing control instruction to the gate opening / closing control unit 7 to control the gate bar 3 to be closed once, but the vehicle detection unit 6 controls the following vehicle. Is detected (step S070-Y), recognition processing by the second camera 5b is performed (step S080).

  Here, the processing of steps S060, S070, S080, and S090 is performed when the gate bar 3 is in the open state, and when it is determined that the subsequent vehicle is a registered vehicle, the gate bar is detected until the passage of the subsequent vehicle is detected. 3 is controlled so as not to close. In other words, when it is determined that the following vehicle is a registered vehicle, the gate bar 3 is controlled to be kept open until the following vehicle passes the gate bar 3.

  If it is determined that the second camera 5b is verified (step S090-Y), the process returns to step S060, and it is determined again whether or not the subsequent vehicle that has been verified is passed through the gate bar 3.

  If it is determined in step S090 that the subsequent vehicle collation by the second camera 5b is NG (step S090-N), the process proceeds to step S100, and the gate opening / closing control unit 7 closes the gate bar 3 according to the opening / closing control instruction from the control unit 12. .

  And the control part 12 will switch a camera from the 2nd camera 5b to the 1st camera 4b, if the return signal to the effect that the gate bar 3 was closed and the gate opening / closing control part 7 returned to the original position is input. The switching unit 10 is instructed (step S110).

  The operation of opening / closing control of the gate bar 3 when the vehicle enters from the entrance of the parking lot has been described above, but steps S060 and S070 in FIG. 4 may be processed in parallel. That is, it is also possible to recognize the vehicle identification information of the following vehicle that has come during confirmation of the vehicle passing through the gate of the verification OK.

  As described above, the vehicle identification information on the vehicle license plate can be recognized with high accuracy from a clear image obtained by imaging the vehicle from the front by the first camera 4b built in the gate bar 3 in the normal state. When the gate bar 3 is open, the vehicle identification information on the license plate of the succeeding vehicle is recognized by another camera (second camera 5b). As a result, the vehicle identification information on the license plate of the succeeding vehicle can be recognized while the previous vehicle is passing through the gate bar 3, and smooth passage of the vehicle can be realized.

  Although not shown in the flowchart of FIG. 4, since the vehicle is imaged from the front by installing the first camera 4b in the gate bar 3, the gate bar has an effect that a clear image can be obtained. If 3 itself shakes by the influence of wind etc., it is assumed that the recognition rate of the vehicle identification information on a license plate falls.

  As a countermeasure for solving this problem, in the present embodiment, a vibration detection sensor 11 (acceleration sensor) is installed in the gate bar 3 and when vibration (acceleration) exceeding a predetermined value is detected, the gate bar 3 is opened and closed. Regardless, the switching unit 10 is controlled to switch from the first camera 4b to the second camera 5b to acquire an image from the second camera 5b. The second camera 5b is not affected by wind because it is installed on a structure fixedly installed on the ground. Thereby, even when the gate bar 3 itself vibrates due to wind or the like, it is possible to prevent malfunction due to the fact that the vehicle identification information cannot be recognized.

  By the way, in embodiment mentioned above, even if it fails in the collation processing of the vehicle identification information in the 2nd camera 5b when the gate bar 3 is open, after the gate bar 3 closes, in the 1st camera 4b The vehicle identification information can be verified.

  To explain further, even if the leading vehicle takes time to pass while the gate bar 3 is open and the vehicle body of the leading vehicle gets in the way, and the subsequent vehicle cannot be imaged by the second camera 5b, the leading vehicle is still in the gate bar 3 If the subsequent vehicle travels to the vicinity of the gate bar 3 and stops, the subsequent vehicle is imaged from the front of the gate bar 3 by the first camera 4b, and the vehicle on the license plate is captured from the captured image. In this configuration, identification information is acquired and collation processing is performed. For this reason, the collation conditions for the second camera 5b can be set stricter than the collation matching conditions for the first camera 4b.

  Specifically, “matching vehicle identification information in one frame image” is set as a matching condition in the first camera 4b, and “matching vehicle identification information in three consecutive frame images” is set to the second camera. Each of them is set as a collation matching condition in 5b. Under these collation matching conditions, when vehicle identification information is recognized and collated by the first camera 4b, collation is OK if the vehicle identification information is collated and matched in one frame image, and vehicle identification is performed by the second camera 5b. When the information is recognized and collated, the collation is OK if the vehicle identification information is collated in three consecutive frames of images. As a result, with respect to the following vehicle, the vehicle identification information on the license plate is given twice, and the vehicle identification information by the second camera 5b under the matching condition set more strictly than the first camera 4b. Even if the verification process fails, the first camera 4b captures the subsequent vehicle from the front of the gate bar 3 after the gate bar 3 is closed, and acquires the vehicle identification information on the license plate from the captured image and performs verification. Processing can be performed.

DESCRIPTION OF SYMBOLS 1 Vehicle entrance / exit management apparatus 2 Gate main body 3 Gate bar 4 1st imaging device 4a 1st illumination part 4b 1st camera 5 2nd imaging device 5a 2nd illumination part 5b 2nd camera 6 Vehicle detection part 7 Gate opening / closing control unit 8 Recognition processing unit 9 Storage unit 10 Switching unit 11 Shake detection sensor 12 Control unit S Monitoring area

Claims (5)

In the vehicle entrance / exit management device that regulates the traffic of vehicles by gate bars,
Vehicle detection means for detecting the vehicle;
A first camera installed on the gate bar for imaging the vehicle from the front direction;
A second camera installed at a different position from the gate bar;
Read the vehicle identification information on the license plate of the vehicle from the image acquired from the first camera or the second camera, and determine whether the vehicle identification information matches the vehicle identification information stored in advance. Recognition processing means;
Control means for allowing the vehicle to pass when the vehicle identification information matches, and controlling to open the gate bar;
The control means acquires an image from the first camera when the gate bar is in a closed state, and switches from the first camera to the second camera when the gate bar is in an open state. A vehicle entrance / exit management device, wherein an image is acquired from a second camera. When the control means continues to determine that the vehicle following the permitted vehicle is a pre-registered vehicle when the gate bar is in the open state, the vehicle preceding the preceding vehicle is determined. 2. The vehicle entry / exit area according to claim 1, wherein even if the vehicle detection means detects the passage of the vehicle, the gate bar is not closed until the vehicle detection means detects the passage of the following vehicle. Management device. The gate bar has a shake detection sensor for detecting its own shake,
3. The control unit according to claim 1, wherein, when the shake detection sensor detects a shake greater than or equal to a predetermined value, the control means controls to acquire an image from the second camera even when the gate bar is in a closed state. Vehicle entry / exit management device described in 1. The gate bar has an illumination part,
The vehicle entry / exit management device according to any one of claims 1 to 3, wherein the control unit controls the illumination unit to emit light when the vehicle detection unit detects a vehicle. The said control means, when acquiring an image with the said 2nd camera, sets the collation matching conditions of the said vehicle identification information more strictly than the case where an image is acquired with the said 1st camera. Item 5. The vehicle entry / exit management device according to any one of Items 1 to 4.

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