KR20210109839A - Vehicle speed warning system - Google Patents

Abstract

The present invention relates to a vehicle speed warning system. According to one embodiment of the present invention, the speed of a vehicle, a license plate, etc. are detected from a photographed image (GPS coordinate mapping) photographed by an image photographing unit without means such as an expensive radar, a loop sensor, etc. and a warning notification is provided to a speeding vehicle. In addition, without a separate control server, information on the speeding vehicle is directly shared between vehicle speed monitoring devices, and by continuously providing speed information to the speeding vehicle driver in the direction of the speeding vehicle, not only can the speeding vehicle driver continuously raise the awareness of speeding, but also the drivers of surrounding vehicles can raise the awareness of safe driving.

Description

Vehicle speed warning system {VEHICLE SPEED WARNING SYSTEM}

The present invention relates to a vehicle speed warning system.

The speed limit for vehicles traveling on the road is different depending on the road conditions (road width, road condition, road type, surrounding conditions, etc.).

For example, on high-speed roads, the maximum speed (90 km/h to 110 km/h) is limited by type, and the maximum speed (30 km/h) is limited when passing through a school zone.

Conventionally, it is operated to prevent drivers from speeding as a punishment method after cracking down on whether a driver exceeds the speed limit, and if the speed limit is exceeded, a fine or a fine is imposed by cracking down (camera method).

However, this pre-regulation and punishment method raises the possibility of filing a complaint if the driver inadvertently violates the speed because the driver does not understand the road conditions accurately.

In addition, the road traffic culture is not mature as violators repeatedly violate traffic laws without a sense of responsibility.

On the other hand, as a related art, Korean Patent Registration No. 10-2062239 discloses an image sensing unit, a radar sensing unit that sends a transmission radar signal toward a vehicle passing through a road, and a radar detection unit that receives a reflected radar signal reflected from the vehicle, and a transmission radar. A speeding danger advance warning system using a heterogeneous detection means including an AI-based information processing unit that calculates the speed of a vehicle using a signal and a reflected radar signal is disclosed.

However, in the case of the technology described in the above-mentioned Korean Patent Documents, there is a problem in that an expensive radar device must be used, and technical contents that can continuously inform the speeding state of the vehicle in front of the speeding vehicle are not disclosed.

Accordingly, the present invention has been devised in the background described above, and it warns the speeding vehicle by detecting the speed of the vehicle, the license plate, etc. An object of the present invention is to provide a vehicle speed warning system capable of providing a notification.

In addition, information on the speeding vehicle is shared directly between the vehicle speed monitoring devices, and speed information is continuously provided to the speeding vehicle driver in the direction of the speeding vehicle, thereby continuously raising the awareness of speeding vehicle drivers. The purpose of the present invention is to provide a vehicle speed warning system that can raise awareness of safe driving to drivers of surrounding vehicles as well.

The object of the present invention is not limited thereto, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve this object, an embodiment of the present invention is to photograph a vehicle (C) entering a photographed image area (S) in which each partitioned area is mapped with GPS coordinates, and a photographed image ( i_0) and a first image capturing unit for generating a captured image i_1 at the elapsed time t_1, respectively; Using the partitioned area mapped to the virtual reference line L_0 of the vehicle C in the photographed image i_0, the virtual reference line L_1 of the vehicle C in the photographed image i_1, and the GPS coordinates a first speed calculator for calculating a first speed of the vehicle (C); When the calculated first speed of the vehicle (C) is equal to or greater than a preset reference speed, the first vehicle for extracting the identification number (N) of the vehicle from the license plate of the vehicle (C) photographed by the first image capturing unit a discrimination unit; Transmitting the first speed information (v_1) for the first speed of the vehicle (C) and the identification number information (p_1) for the identification number (N) to the second vehicle speed monitoring device in the forward direction of the vehicle a first communication unit; a first vehicle speed monitoring apparatus 100 including; and a second communication unit receiving the first speed information (v_1) and the identification number information (p_1) from the first communication unit; Using the entered distance with the first vehicle speed monitoring device and the applied first speed information v_1, the location of the vehicle C is estimated and the expected arrival time of the vehicle C is calculated. and a vehicle location determining unit that, when a value obtained by dividing the time interval between the reference time and the expected arrival time by a predetermined reference time interval falls within a predetermined range, the first of the vehicle and the second vehicle speed monitoring device 200 for transmitting the speed information v_1 and the identification number information p_1 to the third vehicle speed monitoring device 300 in front of the traveling direction of the vehicle. vehicle speed warning system.

According to an embodiment of the present invention, a warning notification is provided to a speeding vehicle by detecting the speed of a vehicle, a license plate, etc. There is an effect that can be done.

In addition, without a separate control server, information on the speeding vehicle is directly shared between vehicle speed monitoring devices, and speed information is continuously provided to the speeding vehicle driver in the direction of the speeding vehicle's travel direction, so that the speeding vehicle driver is alerted to speeding. Not only can it continuously inspire the driver, but it also has the effect of raising awareness about safe driving for drivers of nearby vehicles.

1 is a block diagram illustrating a vehicle speed warning system according to an embodiment of the present invention.
2 is a diagram illustrating an example in which vehicle speed monitoring devices are installed on the side of a road to measure the speed of a vehicle.
3 is a diagram illustrating an example in which a captured image area captured by the first image capturing unit of the first vehicle speed monitoring device is mapped to GPS coordinates.
4 is a diagram illustrating an example in which the first vehicle speed monitoring device calculates the first speed of the vehicle.
5 is a diagram illustrating an example in which the second vehicle speed monitoring device calculates the expected arrival time of the vehicle.
6 is a view showing an example in which the second vehicle speed monitoring device transmits first speed information and identification number information of the vehicle to the third vehicle speed monitoring device.
7 is a diagram illustrating an example in which a captured image area captured by a second image capturing unit of a second vehicle speed monitoring device is mapped to GPS coordinates.
8 is a diagram illustrating an example in which the second vehicle speed monitoring device calculates the second speed of the vehicle.
9 is a diagram illustrating an example in which the second vehicle speed monitoring device transmits first speed information, second speed information, and identification number information of the vehicle to the third vehicle speed monitoring device.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the component from other components, and the essence, order, or order of the component is not limited by the term. When a component is described as being “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is between each component. It should be understood that elements may be “connected,” “coupled,” or “connected.”

1 is a block diagram illustrating a vehicle speed warning system according to an embodiment of the present invention. 2 is a diagram illustrating an example in which vehicle speed monitoring devices are installed on the side of a road to measure the speed of the vehicle. 3 is a diagram illustrating an example in which a captured image area captured by the first image capturing unit of the first vehicle speed monitoring device is mapped to GPS coordinates. 4 is a diagram illustrating an example in which the first vehicle speed monitoring device calculates the first speed of the vehicle. 5 is a diagram illustrating an example in which the second vehicle speed monitoring device calculates the expected arrival time of the vehicle. 6 is a view showing an example in which the second vehicle speed monitoring device transmits first speed information and identification number information of the vehicle to the third vehicle speed monitoring device. 7 is a diagram illustrating an example in which a captured image area captured by a second image capturing unit of a second vehicle speed monitoring device is mapped to GPS coordinates. 8 is a diagram illustrating an example in which the second vehicle speed monitoring device calculates the second speed of the vehicle. 9 is a diagram illustrating an example in which the second vehicle speed monitoring device transmits first speed information, second speed information, and identification number information of the vehicle to the third vehicle speed monitoring device.

As shown in these figures, the vehicle speed warning system according to an embodiment of the present invention captures a vehicle (C) that has entered the photographed image area (S) in which each partitioned area is mapped with GPS coordinates. a first image capturing unit 101 for generating a captured image i_0 at a reference time t_0 and a captured image i_1 at an elapsed time t_1, respectively; Using the virtual reference line (L_0) of the vehicle (C) in the photographed image (i_0) and the virtual reference line (L_1) of the vehicle (C) in the photographed image (i_1) and the partitioned area mapped with GPS coordinates a first speed calculator 103 for calculating a first speed; When the calculated first speed of the vehicle (C) is greater than or equal to the preset reference speed, the first image capturing unit 101 extracts the identification number (N) of the vehicle (C) from the license plate of the vehicle (C). a first vehicle discrimination unit 105; The first speed information v_1 for the first speed of the vehicle C and the identification number information p_1 for the identification number N, the second vehicle speed monitoring device 200 in the forward direction of the vehicle C a first communication unit 107 for transmitting to; a first vehicle speed monitoring device 100 including; and

a second communication unit 201 receiving the first speed information v_1 and identification number information p_1 from the first communication unit 107; Using the entered distance with the first vehicle speed monitoring device 100 and the applied first speed information v_1, the location of the vehicle C is estimated and the expected arrival time t_e of the vehicle C is calculated The vehicle location determination unit 203 to calculate; includes, and the second communication unit 201 divides the time interval between the reference time (t_0)) and the expected arrival time (t_e) by the preset reference time interval. When it falls within the range, the second vehicle speed that transmits the first speed information v_1 and the identification number information p_1 of the vehicle C to the third vehicle speed monitoring device 300 in the forward direction of the vehicle C Monitoring device 200; characterized in that it includes.

Hereinafter, each structure is demonstrated.

1st vehicle speed monitoring device (100)

The first vehicle speed monitoring apparatus 100 includes a first image capturing unit 101 , a first speed calculating unit 103 , a first vehicle determining unit 105 , and a first communication unit 107 .

The first vehicle speed monitoring apparatus 100 may be fixed to, for example, a gantry installed on a road, or may be fixed to a rod-shaped structure installed on the side of the road.

Of course, the second vehicle speed monitoring device 200 and the third vehicle speed monitoring device 300 to be described later may also be fixed to a gantry, rod-shaped structure, etc. in the same manner as the first vehicle speed monitoring device 100 .

The first image capturing unit 101 may be provided as, for example, CCTV.

The first image capturing unit 101 captures a vehicle (C) entering the captured image area (S) in which each partitioned area is mapped with GPS coordinates.

The first image capturing unit 101 generates, for the vehicle C to be photographed, a photographed image i_0 at a reference time t_0 and a photographed image i_1 at an elapsed time t_1, respectively.

As an example, the first image capturing unit 101 sets the time interval between the reference time t_0 and the elapsed time t_1 to 1 to 5 milliseconds (millisecond, ms), and a photographed image of the vehicle C can create

Of course, the first image capturing unit 101, the reference time (t_0) and the elapsed time (t_1) while the entire vehicle (C) entering the photographed image area (S) is photographed in the photographed image area (S) It can be set to take a picture of the vehicle (C).

Next, the first speed calculator 103 includes a virtual reference line L_0 of the vehicle C set in the photographed image i_0, and a virtual reference line L_1 and GPS coordinates of the vehicle C set in the photographed image i_1. The first speed of the vehicle C is calculated using the partition area mapped to .

The above-described virtual reference lines L_0 and L_1 are virtual reference lines set at the same location of the vehicle C. As shown in FIG.

For example, the first speed calculator 103 may include a reference time t_0 at which the captured image i_0 is generated, an elapsed time t_1 at which the captured image i_1 is generated, and a captured image area S mapped with GPS coordinates. ), the first speed of the vehicle C is calculated using the distance D between the virtual reference lines L_0 and L_1 in the following formula (unit of distance: Km, unit of speed: Km/h).

[Equation 1]

First speed of vehicle C = D / (t_1 - t_0)

Then, the first vehicle determining unit 105, when the calculated first speed of the vehicle (C) is equal to or greater than a preset reference speed, the vehicle (C) from the license plate of the vehicle (C) photographed by the first image capturing unit 101 Extract the identification number (N) of C).

More specifically, the first vehicle discrimination unit 105 extracts an image for the license plate of the vehicle (C) from the rear or front image of the vehicle (C) photographed by the first image capturing unit 101, and extracts By extracting letters and numbers from the license plate image in text format, the identification number (N) of the vehicle (C) is extracted.

Next, the first communication unit 107 transmits the first speed information v_1 for the first speed of the vehicle C and the identification number information p_1 for the identification number N in the forward direction of the vehicle C. of the second vehicle speed monitoring device 200 .

The first communication unit 107 may transmit related information in a wireless data communication method using IoT communication technology such as LoRa, for example.

On the other hand, the first vehicle speed monitoring apparatus 100 may further include a first display unit 109 for displaying the first speed information v_1 and the identification number information p_1 of the vehicle C as text or images. can

Through this, by notifying the driver of the vehicle driving toward the first vehicle speed monitoring device 100 from the rear of the vehicle C, the speeding operation of the front vehicle C, etc., can be raised to raise awareness about driving at an appropriate speed. there will be

Meanwhile, the first vehicle speed monitoring apparatus 100 may transmit the first speed information v_1 and the identification number information p_1 of the vehicle C traveling at a preset reference speed or more to the speed enforcement vehicle.

Second vehicle speed monitoring device (200), Third vehicle speed monitoring device (300)

The second vehicle speed monitoring apparatus 200 may be fixed to a gantry installed on the road as described above, or may be fixed to a rod-shaped structure installed on the side of the road.

The second vehicle speed monitoring device 200 includes a second communication unit 201 and a vehicle position determining unit 203 .

The second communication unit 201 receives the first speed information v_1 and the identification number information p_1 from the first communication unit 107 of the first vehicle speed monitoring apparatus 100 .

The second communication unit 201 may receive authorization for related information in a wireless data communication method using an IoT communication technology such as LoRa, for example.

Next, the vehicle position determining unit 203 uses the entered distance D′ with the first vehicle speed monitoring device 100 and the applied first speed information v_1 to determine the position of the vehicle C. Estimate and calculate the expected arrival time (t_e) of the vehicle (C).

That is, the vehicle location determining unit 203 uses the entered distance D' between the first vehicle speed monitoring apparatus 100 and the second vehicle speed monitoring apparatus 200 and the first speed information v_1. Thus, the expected arrival time t_e of the vehicle C is calculated by the following formula.

At this time, when calculating the expected arrival time t_e of the vehicle C, the reference time t_0 at which the first image capturing unit 101 of the first vehicle speed monitoring apparatus 100 generates the captured image i_0 is can be utilized

[Equation 2]

Expected arrival time of vehicle (C) (t_e) = t_0 + (D' / v_1)

On the other hand, with respect to the expected arrival time t_e of the vehicle C calculated by the vehicle location determining unit 203, the time interval between the reference time t_0 and the expected arrival time t_e is divided by a preset reference time interval. When the value falls within the preset range, the second communication unit 201 transmits the first speed information v_1 and the identification number information p_1 to the third vehicle speed monitoring device 300 in the forward direction of the vehicle C. send it to

Here, the 'preset reference time interval' refers to the distance (D') between the first vehicle speed monitoring apparatus 100 and the second vehicle speed monitoring apparatus 200 at a vehicle speed limit (eg, 100 km/h). It means the time interval (eg, 30 minutes) required for movement.

In addition, the 'predetermined range' may be set to 0.7 or more and 1 or less as an example.

For example, if the time interval between the reference time t_0 and the expected arrival time t_e for the vehicle C is 25 minutes and the reference time interval is 30 minutes, the ratio value is 25/30 = 0.8, which is Since it falls within a preset range (0.7 or more and 1 or less), the second vehicle speed monitoring device 200 has a significantly high first speed of the vehicle C so that the vehicle C has passed the second vehicle speed monitoring device 200 or It is determined that an effective warning cannot be given to nearby vehicles because it is close.

Accordingly, the second communication unit 201 of the second vehicle speed monitoring device 200 transmits the first speed information v_1 and the identification number information p_1 of the vehicle C to the first in the traveling direction of the vehicle C. By transmitting to the third vehicle speed monitoring device 300 , the third vehicle speed monitoring device 300 can show related information about the vehicle C to surrounding vehicles.

On the other hand, the second vehicle speed monitoring device 200 captures the vehicle (C) that has entered the photographed image area (S') in which each partitioned area is mapped to the GPS coordinates, and captures the photographed image at the reference time (t_2). a second image capturing unit 205 for generating a captured image i_3 at (i_2) and an elapsed time t_3, respectively; In the captured image (i_2), the virtual reference line (L_2) of the vehicle (C), the virtual reference line (L_3) of the vehicle (C) in the photographed image (i_3), and the second image capturing unit 205 are mapped to the partition area mapped to the GPS coordinates It further includes; a second speed calculator 207 for calculating the second speed of the vehicle (C) by using the.

The detailed configuration and functions of the second image capturing unit 205 and the second speed calculating unit 207 are the first image capturing unit 101 and the first speed calculating unit 103 of the first vehicle speed monitoring apparatus 100 described above. ), so a detailed description will be omitted.

In addition, the second vehicle speed monitoring device 200 may further include a second display unit 209 for displaying the first speed information v_1 and the identification number information p_1 of the vehicle C as text or images. can

On the other hand, the second communication unit 201 of the second vehicle speed monitoring device 200, when the second speed of the vehicle (C) is equal to or greater than a preset reference speed, the first speed information (v_1) and the identification number information (p_1) In addition, the second speed information v_2 for the second speed may be transmitted to the third vehicle speed monitoring apparatus 300 .

The third vehicle speed monitoring device 300 may receive authorization for related information in a wireless data communication method using IoT communication technology such as LoRa, for example.

Of course, the third vehicle speed monitoring device 300 includes a third display unit 309 that displays the authorized first speed information v_1, identification number information p_1, and second speed information v_2 as text or images. ) may be included.

In connection with this, the second vehicle speed monitoring device 200 displays the first speed information v_1, the identification number information p_1, and the second speed information v_2 of the vehicle C as text or an image. 2 The display unit 209' may be further included.

Through this, the driver of the vehicle (C) can check the speed information of the vehicle (C) as an accumulated history, and in particular, the awareness of speeding is raised, and the drivers of surrounding vehicles also drive the vehicle ( C) speed, identification number, etc. can be checked, so that the possibility of a traffic accident can be prevented in advance.

On the other hand, the second vehicle speed monitoring device 200, with respect to the vehicle (C) traveling at a preset reference speed or more, the first speed information (v_1) and the identification number that are authorized from the first vehicle speed monitoring device 100 Both the information p_1 and the second speed information v_2 calculated by the second speed calculator 207 may be transmitted to the speed enforcement vehicle.

At this time, the second vehicle speed monitoring device 200 lists the first speed information v_1 and the second speed information v_2 of the vehicle C in chronological order, but the first speed information v_1 The generated position of the first vehicle speed monitoring apparatus 100 and the position of the second vehicle speed monitoring apparatus 200 from which the second speed information v_2 is generated may also be included and transmitted to the speed enforcement vehicle.

As described above, according to an embodiment of the present invention, the speed of the vehicle, the license plate, etc. are detected from the photographed image (GPS coordinate mapping) taken by the imaging unit without means such as expensive radar or loop sensor. It has the effect of providing a warning notification to the vehicle.

In addition, without a separate control server, information on the speeding vehicle is directly shared between vehicle speed monitoring devices, and speed information is continuously provided to the speeding vehicle driver in the direction of the speeding vehicle's travel direction, so that the speeding vehicle driver is alerted to speeding. Not only can it continuously inspire the driver, but it also has the effect of raising awareness about safe driving for drivers of nearby vehicles.

In the above, even though all the components constituting the embodiment of the present invention are described as being combined or operating in combination, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: first vehicle speed monitoring device
101: first image recording unit
103: first speed calculator
105: first vehicle identification unit
107: first communication unit
109: first display unit
200: second vehicle speed monitoring device
201 : 2nd communication department
203: vehicle location determination unit
205: second video recording unit
207: second speed calculator
209, 209': second display unit
300: third vehicle speed monitoring device
309: third display unit
C: vehicle
N: identification number
S : Shooting image area
t_0, t_2: reference time
t_1, t_3 : Elapsed time
t_e : Estimated arrival time
i_0, i_2 : Image taken at the reference time
i_1, i_3 : Captured image at elapsed time
v_1: first speed information
v_2: second speed information
p_1 : identification number information

Claims (6)

By photographing the vehicle (C) entering the photographed image area (S) in which each partitioned area is mapped with GPS coordinates, the photographed image (i_0) at the reference time (t_0) and the photographed image at the elapsed time (t_1) ( a first image capturing unit that generates i_1), respectively; Using the partitioned area mapped to the virtual reference line L_0 of the vehicle C in the photographed image i_0, the virtual reference line L_1 of the vehicle C in the photographed image i_1, and the GPS coordinates a first speed calculator for calculating a first speed of the vehicle (C); When the calculated first speed of the vehicle (C) is equal to or greater than a preset reference speed, the first vehicle for extracting the identification number (N) of the vehicle from the license plate of the vehicle (C) photographed by the first image capturing unit a discrimination unit; Transmitting the first speed information (v_1) for the first speed of the vehicle (C) and the identification number information (p_1) for the identification number (N) to the second vehicle speed monitoring device in the forward direction of the vehicle A first vehicle speed monitoring device including; a first communication unit; and
a second communication unit receiving the first speed information (v_1) and the identification number information (p_1) from the first communication unit; Using the entered distance with the first vehicle speed monitoring device and the applied first speed information v_1, the location of the vehicle C is estimated and the expected arrival time of the vehicle C is calculated. and a vehicle location determining unit that, when a value obtained by dividing the time interval between the reference time and the expected arrival time by a predetermined reference time interval falls within a predetermined range, the first communication unit of the vehicle the second vehicle speed monitoring device for transmitting the speed information (v_1) and the identification number information (p_1) to a third vehicle speed monitoring device in front of the traveling direction of the vehicle;
A vehicle speed warning system comprising: The method of claim 1,
The second vehicle speed monitoring device,
By photographing the vehicle (C) entering the photographed image area (S') in which each partitioned area is mapped with GPS coordinates, the photographed image (i_2) at the reference time (t_2) and the photographed at the elapsed time (t_3) a second image capturing unit generating each image i_3; In the captured image (i_2), the virtual reference line (L_2) of the vehicle (C) and the virtual reference line (L_3) of the vehicle (C) in the captured image (i_3) and the GPS coordinates of the second image capturing unit are mapped The vehicle speed warning system according to claim 1, further comprising: a second speed calculator configured to calculate a second speed of the vehicle (C) by using the partitioned area. 3. The method of claim 2,
The second communication unit of the second vehicle speed monitoring device,
When the second speed of the vehicle C is greater than or equal to a preset reference speed,
The vehicle speed warning system, characterized in that the first speed information (v_1), the identification number information (p_1), and the second speed information (v_2) for the second speed are transmitted to the third vehicle speed monitoring device. The method of claim 1,
The first vehicle speed monitoring device,
The vehicle speed warning system, characterized in that it further comprises a first display unit for displaying the first speed information (v_1) and the identification number information (p_1) of the vehicle (C) as text or images. The method of claim 1,
The second vehicle speed monitoring device,
The vehicle speed warning system, characterized in that it further comprises a second display unit for displaying the first speed information (v_1) and the identification number information (p_1) of the vehicle (C) as text or images. 3. The method of claim 2,
The second vehicle speed monitoring device,
The vehicle (C), characterized in that it further comprises a second display unit for displaying the first speed information (v_1), the identification number information (p_1), and the second speed information (v_2) of the vehicle (C) as text or an image speed warning system.

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