KR200406413Y1 - Oversppeeding-Vehicle Detecting System - Google Patents

Abstract

The present invention provides a vehicle unmanned speed monitoring system that reduces the error of the speed detection and improves its accuracy, and enables the number reading of the reflected license plate at night.

The present invention for this purpose includes a sensing means (1) for detecting the movement of the vehicle by displacing it in the sensing section set on the road operation control to determine the vehicle speed from the passing time at the starting point and the end point by displacing the sensing section Primary speed discriminating means (10) equipped with means (2): Vehicle moving set relative to the reference time which is the sequential photographing time, including photographing means for sequentially photographing when the speed discrimination means from the primary speed discriminating means Secondary speed discrimination means 20 is included to determine when the vehicle movement limit displacement set from the displacement is exceeded, wherein the secondary speed discrimination means 20 is formed on the road with the viewpoint photographing area P1. A photographing area is formed in the end point photographing area P2 corresponding to the set speed range compared to the photographing time of the sequential photographing. Mera 12 and the end point area camera 14 is provided, and if the vehicle photographed by the two cameras in the end point photographing section has more movement arrangement than the vehicle photographed in the point-in-time photographing section, it is determined as overspeed. The image discrimination mode 16 is characterized by being included in the arithmetic control means 2.

Description

Vehicle Unmanned Speed Monitoring System {Oversppeeding-Vehicle Detecting System}

1 is a plane conceptual diagram showing an example of a conventional speed monitoring system error;

2 is a side explanatory conceptual view showing a speeding monitoring system according to the present invention conceptual concept,

3 is a flow chart for explaining the operation of the speed monitoring system according to the present invention,

4 is a conceptual view of an image of a second discrimination means implemented according to the present invention.

1-sensing means, 2-arithmetic control means,

10-primary speed discrimination means, 12-viewpoint camera,

14-end point camera, 16-image discrimination mode,

18-speed recognition indicator, 20-secondary speed discrimination means,

P1-viewpoint shooting area, P2-endpoint shooting area,

The present invention relates to an unmanned speed monitoring method and system for reducing the error of the speed detection to improve the accuracy and enabling the number reading of the reflective license plate at night.

In general, the causes of automobile traffic accidents are drivers 'violations, lack of road structure, lack of road environment, lack of vehicle conditions, mixed roads and disorders, but direct traffic accidents are caused by drivers' violations. It can be said.

In order to prevent such violations, the driver's compliance spirit is important, but effective enforcement is also an important factor.

In addition, in terms of fatal accident share in terms of accidents caused by violation of laws and regulations, speeding, centerline invasion, and unlicensed licenses are the most common.

However, in addition to the lack of manpower of the crackdown police, complaints about the form of crackdown by violators of traps, excessive crackdowns, or distrust of the results of crackdowns due to the difficulty of proving violations of traffic laws, constant crackdowns and control difficulties, and violation of regulations Inducement of traffic delay in the crackdown of vehicles is causing problems of traffic violations.

It is the unmanned enforcement system that has been developed and performed in this regard.

In the unmanned control system, the speeding control is generally employed using a loop sensor, which is composed of a sensing means 1, arithmetic control means 2, and photographing means 3 as shown in FIG. In (1), the loop coil is embedded in the road at the start and end points of the detection section, and detects the progress of the vehicle within the displacement set as the detection section.

And, the operation control means (2) detects the speed of the vehicle from the traveling time of the vehicle within the displacement, which is the detection section, and in case of violating the specified speed, triggers the surveillance camera, the photographing means (3), to photograph the vehicle, license plate The vehicle number is read from and the detection speed and time are sent to the control center.

Therefore, such unmanned enforcement system provides reliable evidence for speeding vehicles, which occupy the largest proportion of traffic accident death rate, avoids traffic congestion when cracking down, and causes problems of excessive human resources. Will be solved.

However, in such an unmanned enforcement system, in particular, an overspeed enforcement system has a problem that an error occurs within the error.

In more detail, it is assumed that a roof coil is installed at a road dedicated to a vehicle, a speeding point, or a point where an accident rate is high, and an unmanned camera for photographing is installed.

The vehicle is in a low-speed driving due to the traffic conditions of the vehicle, and the vehicle A passes the roof coil at the time point, and is set as a lane changeable area.

At this time, when the vehicle B performs lane change over the vehicle A and the vehicle B passes the loop coil of the end point, the control device calculates whether the speeding vehicle is detected by detecting the loop coil of the start point and the end point.

Therefore, despite being slow, the control device does not recognize that it is two vehicles and makes an error with a speeding vehicle, and it is known that such an error occurs in practice.

And even in the case of multi-axle vehicles such as large trailers or oil tanks, the front wheel proceeds to the end loop coil when the front axle wheel is not detected by the start loop coil at the time of the lane shift, and the wheel of the rear axle is not detected by the start loop coil. It is known that an error occurs even in this case.

The present invention has been made to improve the above problems, and an object of the present invention is to provide an unmanned vehicle speed monitoring system that reduces the error of the speed detection.

In addition, there is another object to provide a vehicle unmanned speed monitoring system that enables the number reading of the vehicle license plate at night photography even when the reflective license plate is employed.

In the present invention, when overspeed is detected in the set detection section, two consecutive photographings are sequentially performed, and then, in preparation for the two images, the moving displacement is used as a reference for the vehicle displacement in the shooting time section. When the limit displacement is exceeded in time, it is determined to be overspeed.

In this case, two cameras may be adopted as end point cameras for capturing the viewing area and the moving area recognized as speed. In this case, the camera set to the exposure value according to the reflection amount of the reflecting plate when one camera is photographed at night It is mounted so that shooting can be performed.

Hereinafter, the present invention with reference to the accompanying drawings in detail as follows.

Exemplary drawings FIG. 2 is a conceptual diagram illustrating a side view showing a speeding monitoring system according to the present invention, and a conceptual view of an office facility. FIG. 3 is a flowchart for explaining the operation of the present invention.

And, Figure 4 is a conceptual view of the image of the secondary discrimination means implemented according to the present invention.

The present invention includes a sensing means (1) for detecting the movement of the vehicle by displacing it in the sensing section set on the road, the operation control means for determining the vehicle speed from the passing time at the starting point and the end point by the displacement of the sensing section ( 2) is provided with a primary speed discrimination means 10 and: from the primary speed discrimination means, including a photographing means for sequentially photographing at the time of speed discrimination from the vehicle movement displacement set relative to the reference time which is the sequential photographing time It is an unmanned speed monitoring system that includes a secondary speed discrimination means 20 to determine when the set vehicle movement limitation displacement is exceeded.

Here, the secondary speed discriminating means 20 has a photographing area formed on the road as an end point photographing area P2 corresponding to the viewpoint photographing area P1 and the speed setting range compared to the photographing time of the sequential photographing. A photographing area camera 12 and an end point area camera 14 are provided as photographing means for photographing the respective photographs. The two cameras are moved in excess of the vehicle photographed in the end point photographing section. In the case of having the arrangement, it is characterized in that the image discrimination mode 16 for discriminating this at an overspeed is included in the arithmetic control means 2.

Here, on the road that is the photographing area in the second speed discrimination means, the speed recognition display unit 18 is formed on the road so that the displacement limit of the vehicle movement is displayed on the road so that the moving distance of the speeding target vehicle is identified from the photographing. It is done.

On the other hand, in the secondary speed discriminating means, the photographing means is characterized in that the exposure value is set so that the vehicle number of the reflection license plate is read by either of the viewpoint area camera 12 or the end point area camera 14 during night photographing.

In addition, the photographing means in the secondary speed discrimination means is characterized in that the illumination of the camera flash is set so that the vehicle number of the reflection license plate is read by either of the viewpoint area camera 12 or the end point area camera 14 during night photographing. .

As described above, the present invention provides an unmanned speed detecting method and a system which minimize the error of the unmanned speed monitoring system.

The present invention for this purpose is to determine the speed by the vehicle movement time relative to the existing displacement as the primary speed discrimination means 10, and to assist the secondary speed discrimination means 12 to assist this through the vehicle displacement over time It is to judge the speed.

That is, in the conventional loop detection formula, as described above, the displacement of the vehicle is fixed to the detection section, and the detection means 1, which is the displacement, detects the passing time of the vehicle to detect the speed of the vehicle.

This is a component of the primary speed discrimination means in the present invention, and more accurate secondary speed discrimination means are assisted by a simple system combination with these existing components.

Unlike the first speed discrimination means, the second speed discrimination means sets a reference time in unit time and determines the moving distance of the vehicle from the reference time to determine whether or not the speed is determined. The comparison can more clearly determine whether or not you are speeding.

The implementation of this secondary speed discrimination means is realized by a simple but reliable means of continuous shooting.

Continuous shooting provides a highly accurate and reliable mechanical element in hardware, and the time interval performed during continuous shooting becomes an intermittent sensing time interval.

Such a speed detection time interval is always constantly controlled by a mechanical element, and this is indicated by the speed limit of the vehicle movement as the reference time, and the speed limit can be easily determined when the speed limitation is exceeded. will be.

For example, when the reference time by the time difference of the continuous shooting is 0.05 seconds, the specified speed is 100km / h, the limit displacement is about 1.4m within the reference time, and if it exceeds this is the speeding target vehicle.

As the secondary discriminating means of the present invention for detecting the movement limit displacement with respect to the reference time, it is preferable that two cameras are provided as the continuous photographing means.

This makes it difficult to equip an expensive high-speed camera for continuous shooting, and allows the camera to move in the direction of vehicle movement as the shooting zone in the arrangement for identifying license plates at the start and end of continuous shooting varies. This is because the mechanical device is complicated.

 In addition, two cameras are applied to the present invention for night identification and number reading of the reflective plates to be described later.

Continuous shooting acquires two images with the viewpoint area camera 12 and the endpoint area camera 14 at the starting point and the ending point for the parallax, and the shooting areas at the starting point and the ending point are different from each other. It is set far from the vehicle moving direction.

That is, in the second speed detecting step, the viewpoint shooting area P1 and the endpoint shooting area P2 are set for continuous shooting, and the endpoint shooting area is set to the area of the displacement expected to move with respect to the speed, and the viewpoint shooting is performed. When the vehicle image arrangement of the area and the vehicle image arrangement of the end point photographing area are taken similarly or forwardly, the vehicle image is detected to be overspeed.

This means that when taking pictures with a parallax, the license plate needs to be exposed with the vehicle in order to have proof, and at night identification it is necessary to expose both license plates to read at least one license plate. Because.

Image reading is performed by imaging the viewpoint shooting zone and the endpoint shooting zone, and an image discrimination mode 16 for this purpose is formed in addition to the conventional operation control means 2.

The image discriminating means 16 is simpler than the image discriminating means for reading the license plate in the existing arithmetic control means 2, and can be simply implemented by general software means.

The image discrimination mode 16 is determined by comparing the two lines obtained in succession through the comparison line (for example, the front bumper end extension line of the vehicle) in the point of view shooting, as shown in Figure 4a When the comparison line (dotted line) is disposed behind the viewpoint photographing comparison line, it is not overspeed, and this is the case where overspeed is detected due to an error due to the above-described reasons.

In this case, the buffers of the two image data captured and stored are deleted and initialized.

On the other hand, when the comparison line (dotted line) of the end point photographing is located on the same line or forward as compared to the point photographing comparison line, as shown in FIG. 4B, the speed is certain. .

At this time, the license plate readout is read out and sent to the center if any one of the two images can be read, and if the license plate readout is not performed in any of them, an error is reported to the center.

Here, the center is a central system that automatically notifies the violators by speeding up the speed regulation, and the detailed description thereof is omitted.

It would be desirable for two violators to be sent out to admit speeding facts to violators, and in addition to this, it is desirable to display speeding facts in the two continuous shots.

In addition, in order to recognize the speeding fact, the speed limit display unit 18 shown in FIG. 2 displays the moving limit displacement according to the reference time on the road and notifies that the intermittent vehicle exceeds this limit displacement. You can do it.

By virtue of these two photographs, the violator's point of view, if there is an objection to speeding enforcement, can be adopted as evidence of the objection, and the two photographs themselves can resolve the objection or question.

Next, according to the two photographing means for carrying out the present invention, there is provided a means for notifying the speed regulation by performing the reading of the reflection license plate, especially at night.

On the other hand, a problem that arises when speeding up is about the adoption of the reflective license plate in the vehicle license plate.

Reflective plates are now known to be clearly superior to general license plates for day and night visibility.

However, there is a problem in the adoption of the reflective license plate because it is difficult to read the vehicle number from the license plate during the nighttime crackdown of the unmanned camera, and the reflective license plate with high visibility day and night for one reason is difficult to read in the unmanned enforcement system. Refusal of adoption is followed by crowds.

Moreover, even in an unmanned enforcement system, the number reading of the reflecting license plate at night shooting is sufficiently possible in hardware.

By the way, this is also for reading the number of the reflective license plate only, the problem is that the reading of the number within the replacement period when the general license plate and the reflective license plate is mixed.

When the reflecting plates are adopted by day and night visibility, it takes a considerable period of time before the entire license plate is replaced with the reflecting plates, and it is practically difficult to have a device for identifying both the common and reflecting plates within this period. .

That is, even in the current camera, it is possible to read the reflection license plate number at night, which is when changing the illuminance of the flash or correcting the exposure value of the camera at night.

However, when the exposure value is corrected for the number reading of the reflective license plate as described above, the number of the general license plate becomes too dark, making it difficult to read the number.

To this end, it is feasible to install two cameras, and either of them can handle the exposure value or the illuminance of the flash, but for this purpose, the installation of two cameras is necessary, given the large volume installed in the national road network. For transient periods of change only, it is a deterioration of actions and effects relative to the input.

That is, according to the present invention, as the view point camera 12 and the end point area camera 14 have secondary discriminating means, it may be desirable to have a synergy effect as an application extension added thereto.

Accordingly, the present invention may be useful in the case of a transitional period in which a general license plate and a reflective license plate are mixed, and in which the license plate is applied to the final period, the exposure value or the illuminance of the license plate is adjusted.

As described above, according to the present invention, as the secondary speed discrimination means is provided by two surveillance cameras, the primary speed is detected first and then the movement limit displacement relative to the reference time is determined by the secondary discrimination means. By correcting the error of the discriminating means, there is an effect that the accuracy of the speed regulation is improved.

In addition, since the exposure value or the camera flash illuminance is corrected to allow the number reading of the reflective license plate to be taken out of the continuous shooting for the second discrimination, the nighttime is changed even when the general license plate and the reflective license plate are mixed. There is an effect that the speeding speed is sufficiently performed.

Claims (5)

And a sensing means (1) for detecting the movement of the vehicle by displacement in the sensing section set on the road, and the arithmetic control means (2) for discriminating the vehicle speed from the passing time at the starting point and the ending point by displacing the sensing section. And a primary speed discrimination means (10) provided: a vehicle movement set from a vehicle movement displacement set to a reference time which is the sequential photographing time, including photographing means for sequentially photographing when the speed discrimination means is determined from the primary speed discrimination means. 2. An unmanned speed monitoring system for a vehicle including a second speed discrimination means (20) for determining the speed limit when exceeding the limit displacement. According to claim 1, wherein the secondary speed discrimination means 20 is a photographing area is formed on the road to the end point photographing area (P1) and the end point photographing area (P2) corresponding to the speed setting range compared to the photographing time of the sequential photographing And a view point camera 12 and an end point area camera 14 are provided as photographing means for photographing each photographing area, and the vehicle photographed in the end point photographing section by the two cameras is photographed in the point photographing section. And an image discrimination mode (16) included in the arithmetic control means (2) to determine if the moving arrangement has exceeded the speed, the image discrimination mode (16). 2. The speed recognition display unit (18) according to claim 1, wherein the vehicle movement limit displacement is displayed on the road so that the moving distance of the speeding target vehicle is identified from the photographing on the road which is the photographing area in the secondary speed discriminating means. Unmanned speed monitoring system, characterized in that formed. According to claim 1, wherein in the secondary speed discrimination means 20, the photographing means has an exposure value such that the vehicle number of the reflection license plate is read out by either one of the viewpoint area camera 12 or the end point area camera 14 during night photographing. Unmanned speed monitoring system of a vehicle, characterized in that set. According to claim 1, wherein in the secondary speed discrimination means 20, the photographing means of the camera flashing light so that the vehicle number of the reflection license plate is read by either of the view point camera 12 or the end point area camera 14 during night photographing. Unmanned speed monitoring system of the vehicle, characterized in that the illuminance is set.

Images