JP5239470B2 - Unauthorized vehicle detection device - Google Patents

Description

  The present invention relates to a fraudulent vehicle detection device that detects a vehicle that passes illegally without paying a fee at a toll gate such as a toll road and photographs a vehicle that passes illegally.

  Conventionally, in ETC (Electronic Toll Collection System), an unauthorized vehicle passing through a toll gate is detected without collecting tolls between the roadside radio device and the vehicle-mounted device mounted on the vehicle. As a fraudulent vehicle detection device, the vehicle is judged to be a fraudulent vehicle when the vehicle entry sensor detects the vehicle, but no toll is collected and the entry blocking rod is forced through, and the flash is photographed. An apparatus is shown (for example, see Patent Document 1).

Japanese Patent Laying-Open No. 2005-234875 (page 3-5, FIG. 1-6)

  However, the conventional apparatus has the following problems. In other words, there are two vehicles entering the toll gate lane in a row, and the vehicles that pass through the toll gate first pass through the toll gate without the toll collection by ETC, and later through the toll gate. The vehicle is assumed to have been correctly collected by ETC.

  In that case, when the unauthorized vehicle passing first forcibly breaks through the entry blocking rod at a tremendous speed, the entry blocking rod may be opened at a stroke due to the impact of collision with the unauthorized vehicle. Therefore, when strobe photography is performed by the unauthorized vehicle detection device in the prior art, there is a possibility that an unauthorized vehicle passing through with the approach prevention rod fully opened may be photographed. In this case, there is a possibility that it cannot be determined whether the unauthorized vehicle broke through the entry blocking rod or whether the entry blocking rod opened for passing the toll gate and the vehicle was passing.

  Or, there is a possibility that an illegal vehicle passes the entry blocking bar at the time of strobe shooting, and the succeeding vehicle that has correctly collected the toll and the opened blocking bar are photographed together. In this case, there is a possibility that it is determined that the vehicle is an unauthorized vehicle that has broken through the entry blocking rod even though the toll collection was performed correctly.

  As described above, it may be difficult to determine whether the reflected vehicle is a fraudulent vehicle that has actually broken through the entry blocking rod only with the strobe image taken when the entry blocking rod is forced through.

  The present invention has been made to solve the problem, and when the vehicle has made a breakthrough of the entry blocking rod, the vehicle that has broken through has been strobe photographed and continuously photographed at a time before and after the strobe photographing time. The purpose is to obtain evidence that the vehicle shown in the photographed image has broken through the entry blocking rod by a series of images combined with the image, and that the vehicle is an unauthorized vehicle.

The unauthorized vehicle detection device according to the present invention is
An entry blocking rod that is closed when blocking a vehicle traveling in a predetermined lane, and opened when allowing the vehicle to pass; and
A detector that outputs a state detection signal indicating a closed state or an open state of the entry blocking rod;
In spite of controlling the entry blocking rod to the closed state, when receiving a state detection signal indicating the opened state of the entry blocking rod from the detector, an entry blocking rod control unit that outputs a breakthrough signal;
The entry blocking rod is continuously photographed at a predetermined time interval, and the vehicle and the entry blocking rod are strobe photographed based on a breakthrough signal output from the entry prevention rod control unit, and a continuously photographed image and a strobe photographed image are output. A vehicle imaging unit to
A controller that transmits a strobe image output from the vehicle imaging unit and a continuous image captured within a predetermined time before and after the strobe shooting time to an external device;
It is characterized by providing.

  According to the present invention, the driver at the moment of performing the breakthrough of the entry blocking rod by taking a strobe photograph using the camera portion and the strobe illumination unit provided in the vehicle image pickup section triggered by the forced breakthrough of the entry blocking rod. It becomes possible to photograph the face clearly. In addition, a series of images that are a combination of a continuous image that is always captured by the camera unit and the continuous illumination unit provided in the vehicle imaging unit and a strobe image, the vehicle reflected in the captured image forcibly penetrates the entry blocking rod. It is possible to obtain evidence that the vehicle is an unauthorized vehicle.

Embodiment 1 FIG.
FIG. 1 is a diagram illustrating a configuration of an ETC including an unauthorized vehicle detection device according to the first embodiment. In the figure, 1 is a vehicle approach sensor, 2 is a roadside wireless device, 3 is a lane server, 4 is an entry blocking bar, 5 is a controller, 6 is a vehicle imaging unit, 7 is a central device, and 8 is a vehicle.

  FIG. 2 is a diagram showing processing of components of the ETC including the unauthorized vehicle detection device in the first embodiment. The vehicle approach sensor 1 installed in a predetermined lane transmits vehicle detection information to the lane server 3 when detecting the vehicle 8 that has entered the predetermined lane. The lane server 3 transmits a “close” command indicating that the vehicle 8 is prevented from passing to the entry blocking bar control unit 41 to make the entry blocking bar 4 closed. When the lane server 3 wirelessly communicates with the ETC vehicle-mounted device mounted on the vehicle 8 and confirms that the toll collection has been correctly performed, the lane server 3 permits the vehicle 8 to pass to the entry block control unit 41. "Open" command is transmitted, the entry blocking rod 4 is opened, and the vehicle 8 is allowed to pass through the lane.

  On the other hand, when the toll collection is not performed between the roadside apparatus 2 and the vehicle 8, the lane server 3 keeps the entry blocking rod 4 closed and blocks the vehicle 8 from passing therethrough. In the case where the vehicle 8 is in contact with the approach blocking bar 4 and forcibly breaks through even though the approach blocking bar 4 remains closed, the approach blocking bar control unit 41 indicates that the approach blocking bar 4 has been released. In other words, a breakthrough signal is transmitted to the controller 5 by using a force to change from the closed state to the open state due to the contact with the vehicle as a trigger. The controller 5 transmits an imaging command to the vehicle imaging unit 6 when a breakthrough signal is detected. The vehicle imaging unit 6 continuously photographs the entry blocking rod 4 and, upon receiving an imaging command from the controller 5, causes the strobe illumination unit included in the vehicle imaging unit 6 to emit light and forcibly breaks through the entry blocking rod 4. Take a strobe photo of at least the driver's face and the front of the vehicle including the number plate.

  The vehicle imaging unit 6 transmits a continuous image including images taken with a flash to the controller 5. The controller 5 transmits, to the central device 7, among the continuous images received from the vehicle imaging unit 6, a continuous captured image captured before and after the flash captured image and the flash captured time.

  The central device 7 accumulates the stroboscopic image transmitted from the controller 5 and the continuous image captured before and after the stroboscopic time. The stored image may be used for the control of unauthorized vehicles.

  FIG. 3 is a block diagram showing a detailed configuration of each part of the unauthorized vehicle detection device in the first embodiment. When the vehicle 8 passes through the lane where the roadside apparatus 2 is installed, the vehicle detection information is transmitted to the lane server 3 when the vehicle approach sensor 1 installed in the lane detects the vehicle 8. When the lane server 3 receives the vehicle detection information, the lane server 3 transmits a “close” command to the approach prevention rod control unit 41. In response to the “close” command received from the lane server 3, the entry prevention rod control unit 41 uses the entry prevention rod 4 to close the lane, thereby preventing the vehicle 8 from passing therethrough.

  When the lane server 3 wirelessly communicates with the ETC vehicle-mounted device mounted on the vehicle 8 and confirms that the toll collection has been correctly performed, the lane server 3 “opens” the entry blocking bar control unit 41. Send a command. The entry blocking rod control unit 41 permits the vehicle 8 to pass by opening the lane using the entry blocking rod 4 according to the “open” command received from the lane server 3.

  On the other hand, when the lane server 3 confirms that the toll collection by radio is not performed between the roadside apparatus 2 and the ETC onboard device mounted on the vehicle 8, the lane server 3 does not output the “open” command, By leaving the entry blocking rod 4 in the closed state, the vehicle 8 is blocked from passing, and a warning that the vehicle cannot pass is given to the driver. Even if the entry blocking bar 4 is closed and the vehicle 8 is blocked from passing, the vehicle 8 forcibly breaks through the entry blocking bar 4 and changes to a state in which the entry blocking bar 4 is opened. The entry blocking bar control unit 41 detects a forced breakthrough of the vehicle 8.

  Here, as an example of detecting the forced breakthrough of the vehicle 8, a detector 42 is provided as shown in FIGS. When the entry blocking rod 4 is in a closed state, the entry blocking rod 4 and the detector 42 are set in a physical contact state or an electrical short state, and the entry blocking rod 4 is in an opened state. The entry blocking rod 4 and the detector 42 are set to be in a physically non-contact state or electrically open state. Then, the detector 42 outputs a state detection signal indicating that the entry blocking bar 4 is in a closed state or an opened state to the entry blocking bar control unit 41.

  As an unauthorized vehicle detection method, when the detector 42 is in a physically non-contact state or an electrically open state with the entry blocking rod 4 while the entry blocking rod control unit 41 receives the “close” command, The detector 42 outputs a state detection signal indicating an open state to the entry blocking rod control unit 41. When the entry blocking bar control unit 41 controls the entry blocking bar 4 to be in the closed state, when the vehicle 8 receives the state detection signal indicating the opened state of the entry blocking bar 4 from the detector 42, the vehicle 8 It is determined that the vehicle has been forced through, and a breakthrough signal is output.

  When the controller 5 receives a breakthrough signal from the entry blocking rod control unit 41, the vehicle imaging interface (hereinafter, vehicle imaging I / F) unit 12 provided in the controller 5 captures an image on the strobe illumination unit 10 of the vehicle imaging unit 6. Send a command. The controller 5 may use the breakthrough signal received from the entry prevention rod control unit 41 as an imaging command.

  The vehicle imaging unit 6 includes a camera unit 9 that captures the entry blocking rod 4, a strobe lighting unit 10 that emits strobe light to stroboscope the vehicle 8 that is forced to break through the camera unit 9, and an entry blocking rod that includes the camera unit 9. 4 is provided with a continuous illumination unit 11 for continuously photographing 4. The camera unit 9 may be a camera that continuously shoots. Moreover, as the continuous illumination part 11, the illuminating device using LED (Light Emitting Diode) may be sufficient. Since LEDs have the advantages of low power consumption and long life, there are effects such as reduction of power consumption of the continuous illumination unit 11 and maintenance work such as replacement.

  The camera unit 9 continuously captures the entry blocking rod 4 illuminated by the continuous illumination unit 11 at predetermined time intervals. Here, the predetermined time interval is, for example, photographing at 1/30 second intervals. The strobe lighting unit 10 emits strobe light in synchronization with the imaging timing of the camera unit 9 based on the imaging command (or breakthrough signal) output from the vehicle imaging I / F unit 12. The camera unit 9 takes a flash image by the light emitted from the flash illumination unit 10. The strobe-photographed image shows the front of the vehicle including at least the face of the driver and the number plate in the vehicle 8 that has forcibly broke through the entry prevention rod 4 together with the entry prevention rod 4.

  The vehicle imaging I / F unit 12 captures images continuously captured at predetermined time intervals by the camera unit 9 in time series, and temporarily stores them in, for example, a storage unit (not shown) provided in the vehicle imaging I / F 12. Let Note that images taken with a flash are also included in images taken continuously.

  The components of the controller 5 and the components of the vehicle imaging unit 6 are time-synchronized. In addition, since the internal processing time of components of the controller 5 and the vehicle imaging unit 6 and the signal transmission time between the controller 5 and the vehicle imaging unit 6 can be measured, the vehicle imaging I / F of the controller 5 can be measured. The time from when the unit 12 outputs the imaging command to when the vehicle imaging I / F unit 12 receives an image captured by the camera unit 9 with a flash can be calculated. As a result, the vehicle imaging I / F unit 12 can determine an image captured with the flash from the received continuous images. Further, since the camera unit 9 continuously shoots at a predetermined time interval, it can also extract images continuously shot within a predetermined time before and after the flash shooting time.

  Of the images temporarily stored in the vehicle imaging I / F unit 12, the images captured with the flash and the continuous images before and after the flash shooting time are combined with the shooting date, shooting location, and frame number, respectively. The data is transmitted from the unit 12 to the transmission processing unit 13 provided in the controller 5. The transmission processing unit 13 transmits to the central device 7 a stroboscopic image in which the photographic date / time, photographic location, and frame number are combined and an image continuously captured within a predetermined time before and after the stroboscopic time.

  The central device 7 stores in the data storage unit 14 a strobe image and a continuous image captured at a time before and after the strobe shooting time sent from the transmission processing unit 13. Based on the data stored in the data storage unit 14, the central device 7 can crack down on an unauthorized vehicle that broke through the toll gate.

  FIG. 4 is a flowchart showing a processing procedure of the unauthorized vehicle detection device in the first embodiment. When the vehicle entry sensor 1 detects the vehicle 8 (step S101), the lane server 3 transmits a “close” command to the entry prevention rod control unit 41 to close the entry prevention rod 4 and pass the vehicle 8 through. Blocking (step S102).

  The lane server 3 confirms whether toll collection is performed by wireless communication between the roadside apparatus 2 and the ETC on-board unit mounted on the vehicle 8 (step S103). When the toll collection of the vehicle 8 is received (when Step S103 is YES), the lane server 3 issues an “open” command, opens the entry blocking rod 4, and permits the vehicle 8 to pass through the lane (Step S104). On the other hand, when the toll collection of the vehicle 8 is not received (NO in step S103), the lane server 3 does not output the “open” command, and keeps the entry blocking bar 4 closed.

  The entry blocking rod control unit 41 determines whether or not the entry blocking rod 4 has been released due to the forced breakthrough of the vehicle 8 while receiving the “close” command (step S105). If there is no release of the entry blocking bar 4 (NO in step S105), the process returns to the vehicle detection process (step S101) by the vehicle entry sensor 1.

  On the other hand, when the entry blocking bar 4 is released due to the forced breakthrough of the vehicle 8 (when step S105 is YES), the vehicle imaging unit 6 captures the entire vehicle image, and the vehicle imaging I / F unit 12 Capture images. Here, the images captured by the vehicle imaging I / F unit 12 are a strobe image photographed using the camera unit 9 and the strobe illumination unit 10, and a continuous image photographed using the camera unit 9 and the continuous illumination unit 11. (Step S106). The captured flash image is combined with the shooting date, shooting location, and frame number, and transmitted to the central device 7 together with images continuously shot within a predetermined time before and after the flash shooting time (step S107).

  FIG. 5 is a diagram showing a comparison of the entire vehicle image between the unauthorized vehicle detection device according to the first embodiment and the conventional unauthorized vehicle detection device. FIG. 5 (a) shows an image obtained by taking a stroboscopic image of a vehicle 8 forcibly breaking through the entry blocking bar 4 using the prior art, and FIG. 5 (b) shows an entry blocking bar 4 using the unauthorized vehicle detection device of the present invention. FIG. 6 is a diagram showing a series of combinations of an image obtained by taking a stroboscopic image of a vehicle 8 that has been forced to break through and an image obtained by continuously taking a stroboscopic time and an image taken continuously.

  In FIG. 5, 15 is a whole vehicle image, 16 is a superimpose showing the shooting date and time, a shooting point, etc., 17 is a forced breakthrough vehicle, 18 is a driver, and 19 is a number plate. Further, in the entire vehicle image 15, 15 a is one image among continuous images captured at a time prior to the strobe shooting time among the entire vehicle images captured by the unauthorized vehicle detection device of the present invention. Reference numeral 15b denotes an image photographed with a stroboscope among the entire vehicle image photographed by the unauthorized vehicle detection device of the present invention. Reference numeral 15c denotes one of continuous images taken at a time later than the strobe shooting time among the entire vehicle images shot by the unauthorized vehicle detection device of the present invention. Reference numeral 15d denotes an image captured by a stroboscope of the entire vehicle image captured by the conventional fraud prevention detection apparatus.

  Strobe light emission has a fraud deterrent effect because it allows the driver to recognize that “the fraudulent act is being photographed”.

  Therefore, as evidence for an unauthorized vehicle, a method of continuously acquiring images captured with the camera unit 9 by using the camera unit 9 by continuously emitting light using the breakthrough signal as a trigger is also conceivable. In this case, the illegal deterrent effect by strobe emission is maintained. However, even if the strobe lighting unit 10 emits light and a strobe-captured image of the vehicle 8 that broke through the entry blocking rod 4 is acquired, the vehicle 8 is in the imaging region of the camera unit 9 until the next strobe light emission. That is, since it runs away from the entry blocking rod 4, it is difficult to perform continuous flash photography on the forced breakthrough vehicle 16.

  Another possible method is to increase the amount of light from the continuous illumination unit 11 and capture the unauthorized vehicle by continuous shooting. However, in that case, by constantly increasing the light quantity of the continuous illumination unit 11, it is recognized that “not only the illegal act is being photographed”, and the deterrence effect on the unauthorized vehicle due to the light emission is reduced.

  Therefore, as shown in FIG. 5 (b), the entire vehicle 8 including at least the face of the driver 16 of the vehicle 8 and the number plate 19 at the moment when the entry blocking rod 4 is forcibly broken through is photographed with a stroboscope. 9 and a continuous image that is continuously captured using the continuous illumination unit 11 are photographed in a captured image by photographing a series of fraudulent acts, that is, an act of forcibly breaking the entry blocking rod 4 without collecting tolls. It is possible to obtain evidence that the vehicle 8 is a forced breakthrough vehicle 16 that has broken through the entry blocking rod 4. Moreover, the illegal vehicle suppression effect by strobe light emission can also be maintained.

  Also, as shown in FIG. 5 (a), in the conventional problem, only the strobe image taken when the entry blocking rod is forcedly broken, the reflected vehicle is an unauthorized vehicle that has really broken the entry blocking rod. Even if it is difficult to discriminate, as shown in FIG. 5B, by using a series of images of a strobe image and a continuous image within a predetermined time before and after the strobe shooting time, It is possible to determine that 8 is an unauthorized vehicle.

  According to this embodiment, when the roadside radio apparatus 2 cannot collect the toll from the vehicle 8, the driver can be closed by keeping the entry blocking bar 4 that blocks the vehicle 8 from passing. In this case, it is determined that the vehicle is an unauthorized vehicle. Using the camera unit 9 and the strobe illumination unit 10 provided in the vehicle image pickup unit 6 as a trigger, the driver at the moment when the vehicle has been forced to break through the entry blocking rod 4 is triggered. It is possible to photograph the face clearly. In addition, the vehicle shown in the photographed image forcibly enters the entry prevention rod by a series of images obtained by combining a continuous image continuously photographed by the camera unit 9 provided in the vehicle imaging unit 6 and the continuous illumination unit 11 and a strobe image. It is possible to confirm the progress of breaking through and obtain evidence that the vehicle is an unauthorized vehicle.

  As described above, when the vehicle 8 forcibly breaks through the entry blocking rod 4, the strobe lighting unit 10 emits strobe light to the vehicle 8, so that an illegal deterrent effect can be expected for a vehicle passing through a predetermined lane.

  The strobe illumination unit 10 may be an illumination device using infrared rays, and the continuous illumination unit 11 may be an illumination device using visible light. In that case, since the image captured by the camera unit 9 is a color image when continuously captured, the unauthorized vehicle can be confirmed with the color image, and more reliable evidence can be obtained in the unauthorized vehicle confirmation. It becomes possible.

  In addition, the continuous illumination unit 11 is configured to receive the vehicle detection signal output from the vehicle approach sensor 1, and when the vehicle detection signal is received, the continuous illumination unit 11 is turned on, and the continuous illumination unit 11 is turned on to be predetermined. You may make it make it OFF after time passes. Thereby, since the continuous illumination part 11 does not need to be always ON, the power consumption of the continuous illumination part 11 in the time when there is no vehicle which passes a toll gate can be reduced.

  Further, at the time of flash photography, both the flash illumination unit 10 and the continuous illumination unit 11 emit light, which may cause halation. Therefore, at the time of flash photography, the vehicle imaging I / F unit 12 gives an imaging command not only to the flash lighting unit 10 but also to the camera unit 9, and the camera unit 9 also performs camera aperture control when receiving the imaging command. It may be.

  In addition, when the time interval at which continuous shooting is performed in the camera unit 9 is not constant, the vehicle imaging I / F unit 12 extracts a predetermined number of continuously shot images that are before and after the flash shooting time to form a series of images. It is possible to discriminate and confirm the illegal act.

It is a figure which shows the structure of ETC including the unauthorized vehicle detection apparatus in Embodiment 1. FIG. It is a figure which shows the process of the component of ETC including the unauthorized vehicle detection apparatus in Embodiment 1. FIG. 3 is a block diagram illustrating a detailed configuration of each part of the unauthorized vehicle detection device in Embodiment 1. FIG. 3 is a flowchart showing a processing procedure of the unauthorized vehicle detection device in the first embodiment. It is a figure which shows the comparison of the whole vehicle image in the unauthorized vehicle detection apparatus in Embodiment 1, and the conventional unauthorized vehicle detection apparatus.

Explanation of symbols

1. 1. Vehicle entry sensor 2. Roadside wireless device Lane server 4. 4. Ingress blocking bar Controller 6 6. Vehicle imaging unit Central device 8. Vehicle 9. Camera unit 10. Strobe lighting unit 11. Continuous illumination unit 12. Vehicle imaging I / F unit 13. Transmission processing unit 14. Data storage unit 15. Whole vehicle image 16. Superimpose 17. Forced breakthrough vehicle 18. Driver 19. Number plate 41. Access blocking rod control unit 42. Detector

Claims (1)

An entry blocking rod that is closed when blocking a vehicle traveling in a predetermined lane, and opened when allowing the vehicle to pass; and
A detector that outputs a state detection signal indicating a closed state or an open state of the entry blocking rod;
In spite of controlling the entry blocking rod to the closed state, when receiving a state detection signal indicating the opened state of the entry blocking rod from the detector, an entry blocking rod control unit that outputs a breakthrough signal;
Consists of a camera unit that continuously shoots the entry blocking bar at a predetermined time interval, a continuous illumination unit used for continuous shooting, and a strobe illumination unit used for strobe shooting, and continuously captures the entry blocking rod at a predetermined time interval. In addition, a vehicle imaging unit that strobe images the vehicle and the entry blocking rod based on a breakthrough signal output from the entry blocking rod control unit, and outputs a continuous shooting image and a flash shooting image;
A controller that transmits a strobe image output from the vehicle imaging unit and a continuous image captured within a predetermined time before and after the strobe shooting time to an external device;
An unauthorized vehicle detection apparatus comprising:

Images