KR102159047B1 - System for detection vehicla of perimeter column type - Google Patents

Abstract

The present invention relates to a side column type vehicle detection system. Specifically, the side column type vehicle detection system integrally manufactures a laser machine, a camera, and a lighting unit, and at the same time, constituent means are composed of a side column type. The detection accuracy and reliability can be improved by matching a detection line connecting points where emitted laser signals are in contact with the road surface to a lane. By performing multiple detections three times within an image photographed for the camera for vehicle detection, the detection accuracy and reliability can be further improved.

Description

Side column type vehicle detection system {SYSTEM FOR DETECTION VEHICLA OF PERIMETER COLUMN TYPE}

The present invention relates to a side-column vehicle detection system.

Specifically, the laser machine, the camera, and the lighting unit are manufactured as an integrated unit, and at the same time, the components are composed of a side column, and the detection accuracy and reliability of detection by matching the detection lines connecting points where the emitted laser signals contact the road surface are matched to the lane. Can increase,

It relates to a side-column vehicle detection system capable of further improving detection accuracy and reliability by performing multiple detections three times in an image captured for a camera for vehicle detection.

ITS (Intelligent Transportation Systems) is interdependently connected to traffic data, information processing, and information provision, and it collects data through field equipment such as speed detectors and AVI (Automatic Vehicle Identification, Vehicle Number Recognition System). The accuracy of the data collected and detected by the equipment directly affects the quality of traffic information.

In particular, since the speed detector is directly connected to civil complaints when detecting an incorrect speed, high-performance equipment with excellent precision and accuracy is required.

The laser signal has a high energy density, a constant wavelength and phase, and is strong against interference, and because of its advantages in linearity and light condensing properties, a detector using a laser signal (hereinafter referred to as a laser detector) is widely used and is widely used in the operation method. Accordingly, it is classified into a fixed type laser detector and a laser detector.

In particular, laser detectors are widely used for the purpose of controlling overspeed vehicles due to their easy movement and simple installation.

1 is a real photograph showing a conventional speed information.

A conventional portable speed enforcement apparatus (hereinafter referred to as the prior art) 200 includes a speed detection apparatus 210, a photographing apparatus 220, and a communication and output apparatus 230 as shown in FIG. 1. , A battery 240, and a light transmitting device 250, and these components are connected by a data cable.

The speed detection device 210 transmits and receives a laser signal and then analyzes the transmitted and received laser signal to detect the vehicle speed, and the photographing device 220 acquires an image by photographing a speeding vehicle, and a communication and output device ( 230) is configured to transmit the acquired image and the collected data to the outside.

The prior art 200 configured as described above has the advantage of being able to detect the speed of a driving vehicle through the speed detection device 210 and obtain an evidence image for a speeding vehicle through the photographing device 220, Since each of the constituent means (210), (220), (230), (240), (250) is manufactured independently, unnecessary space consumption is large, making installation and movement inconvenient and at the same time interlocking with each constituent means. The preparation and installation work is very complicated and cumbersome, there is a problem of compatibility between equipments, and the cost is large.

In addition, in the prior art 200, because each of the component means 210, 220, 230, 240, and 250 are connected by a data cable, not only the aesthetic is degraded, but the cable is exposed to the outside as it is There is a problem in that convenience is poor, such as disconnection of the cable due to external vibration.

In addition, since the prior art 200 does not include a means for verifying whether an error has occurred in the detection speed when the speed is detected, and a means for correcting it when it is determined that an error has occurred, precision and accuracy are further reduced.

In addition, since the prior art 200 has to be installed on the shoulder of the road during installation, safety is degraded by a vehicle running on the shoulder, and because the installation is performed in a manner that is simply mounted on a flat ground without separate fixing from an external structure, external vibration And problems such as shaking or falling easily by impact occur.

Fig. 2(a) is a configuration diagram showing the conventional speed information of Fig. 1, and (b) is a plan view of (a).

The prior art 200 is installed on the shoulder of the road (S) as shown in Fig. 2(a) and (b), and passes through analyzing the laser signals (L1) and (L2) transmitted and received through the lane to be detected. The speed of the vehicle C is detected.

In addition, the prior art 200 is a sensing line connecting the points (P1) and (P2) where the laser signals (L1) and (L2) contact the road surface when the laser signals (L1) and (L2) are emitted to the lane. When F) is viewed from the plane, it is emitted at an angle of'θ' from the lane direction (I).

The prior art 200 configured as described above includes a laser unit 210, 220 comprising a laser transmission unit 211 and a laser receiving unit 213 for transmitting and receiving each of the laser signals L1 and L2 on the front of the enclosure. ) Are each formed. At this time, the laser units 210 and 220 are installed to be spaced apart from each other in the height direction on the front of the enclosure, so that the reflection point P1 of the laser signals L1 and L2 emitted from each of the laser units 210 and 220 , (P2) are formed to be spaced apart from each other along the lane direction (I).

Accordingly, in the prior art 200, the detection line F connecting the points (P1) and (P2) at which the laser signals (L1) and (L2) contact the road surface is in the lane direction (vehicle driving direction) (I) and It is not formed in the same direction, but is formed inclined from the lane direction I, so that the accuracy and reliability of detection are deteriorated.

In order to solve this problem, the emission angles of the laser units 210 and 220 must be adjusted so that the detection line F of the laser signals L1 and L2 coincide with the lane direction I. , Since the detection line of these laser signals rapidly changes according to various external variables such as the installation height of the laser detector, the installation location, and the location of the lane to be detected, the laser detector manufactured once can be operated only in a specific place. When installed in a place, manufacturing time and cost are excessively increased as the pan-tilt angle of the laser unit must be adjusted again according to the environment of the place, and at the same time, efficiency decreases. The detection line (F) that does not match with is being used without correction.

On the other hand, as in the prior art 200, the side column type speed infomation installed on the shoulder of the road to regulate speeding vehicles is a single signal detection method of Fig. 3 to be described later according to the speed detection method, and a plurality of Fig. 4 to be described later. It is classified as a signal detection method. At this time, the single signal detection method is defined as a method of detecting the speed by analyzing the reflected signal after emitting a laser signal to one point, and the multiple signal detection method is a method of detecting the laser signal to two points as in FIG. It is defined as a method of detecting the speed by analyzing the reflected signal after emission.

3A is an exemplary diagram for explaining a single signal detection method applied to a conventional side column type laser detector, and (b) is an exemplary diagram for explaining the speed detection of the single signal detection method of (a). .

As shown in (a) of FIG. 3, the laser detector 900 emits a laser signal to the center point (P) of the width of the lane and collects the reflected signal, and analyzes the collected reflected signal to determine the vehicle speed. To detect.

At this time, when the time difference between the laser signal emission and reception times and the speed of light are multiplied, the distance D'from the laser speed detector 200 to the point P where the light is reflected is calculated.

In addition, a pulse laser is used as the laser used for speed measurement. Since the distance is measured by emitting a laser several hundred (N) times per second, if the vehicle is approaching, 1/N second as shown in Fig. 3(b) Each time the distance decreases, the vehicle speed can be calculated using this.

However, in this single-signal detection method, since the emission direction of the laser signal L1 and the driving direction I of the vehicle C are inclined to have an angle of'θ', the distance to the emission point P1 ( D') has a value higher than the actual distance D on the horizontal.

That is, since the speed is calculated by the equation of distance / time, the measured vehicle speed (Vp') is an error that is measured higher than the actual speed (Vp) of the vehicle passing through the point'P' (hereinafter referred to as the first cosine error). ) Occurs.

4 is an exemplary diagram for explaining a conventional multiple signal detection method.

In FIG. 4, it will be described for example that the sensing line F is formed parallel to the lane direction I, and when the sensing line F is formed parallel to the lane direction I, the laser signal L1 ) And (L2) are emitted at different angles (θ1) and (θ2) from the lane direction (I).

As shown in FIG. 4, the conventional laser speed detector 900 ′ includes a laser signal L1 at points P1 and P2 spaced apart by a distance of “R” along the driving direction I of the vehicle. After emitting each of the (L2), the time difference (△t) between the time when the vehicle is detected at'P1' (t1) and the time when the vehicle is detected at'P2' (t2) from'P1' to'P2' It is a method to detect the vehicle speed by dividing it by the distance'△'. At this time, in FIG. 4, for convenience of explanation, the detection line F connecting the points P1 and P2 of the laser signals L1 and L2 is parallel to the lane direction (vehicle driving direction). Although described, substantially the sensing line F is not formed parallel to the lane direction for the same reason as described above in FIG. 2.

However, in this multi-signal detection method, as the laser signal L1 is emitted at an angle of'θ1' and the laser signal L2 is output at an angle of'θ2', the distance to the emission points P2 and P1 ( D2') and (D1') are higher than the horizontal distance (D2) and (D1), but the distance difference between two points (P2) and (P1) (△D' = D2'-D1') is the horizontal distance difference It has a value less than (R = D2-D1). At this time, since it is practically impossible to measure the distance R, the difference between the two points (P1) and (P2) (ΔD) after separately calculating'D1' and'D2' in the manner of FIG. 3 '=D2'-D1') must be divided by the time difference (△t) to calculate the vehicle speed.

That is, since the separation distance (△D') between the two points (P1) and (P2) has a value smaller than the horizontal distance (R), an error in which a speed lower than the actual vehicle speed is measured (hereinafter referred to as a second cosine error). Occurs.

In other words, in the case of the conventional side column type laser detector, when the single signal detection method of FIG. 3 is applied, a first cosine error occurs in which a vehicle speed (V') higher than the actual vehicle speed (V) is calculated. When the multi-signal detection method of FIG. 2 is applied, a second cosine error occurs in which a vehicle speed V'lower than the actual vehicle speed V is calculated.

That is, 1) by making the components such as a laser, a photographing means, and a lighting unit in a compact form and at the same time making it possible to attach and detach it with an external structure, it is possible to increase movement and convenience, as well as to simplify the installation work. 2) The detection accuracy and reliability can be improved by matching the detection line (F), which connects the points where the laser signals are in contact with the road surface, to the lane direction (I), and 3) the first cosine error or the second applied when the speed is detected. By correcting the cosine error, detection accuracy and reliability can be further improved.4) Speed calculation by configuring to perform a verification function that determines whether an error has occurred in the speed detection during speed detection and a correction function that corrects it when an error occurs. There is an urgent need for research on speed information that can increase the accuracy and precision of

In Korea Patent Registration No. 10-0877175 (name of the invention: data acquisition system related to a fixed driving vehicle using a laser), a data acquisition system that detects speeds using each laser signal after transmitting and receiving a pair of laser signals is described. However, since the data acquisition system is configured to detect data by simply averaging the data detected by each laser signal, it is not possible to determine whether an error has occurred in the detection speed, and the detection speed cannot be corrected when an error occurs. The accuracy and precision of speed detection are degraded.

In addition, since the data acquisition system is configured to perform only the speeding vehicle detection function, it is cumbersome to install and connect a separate photographing system or interlock with the photographing system installed in the corresponding place to photograph the speeding vehicle. There is a problem of compatibility of equipment, and it has a large disadvantage of cost consumption.

Registered Patent Publication No. 10-1788766 (announced on October 20, 2017) Registered Patent Publication No. 10-1641890 (2016.07.22. Announcement) Registered Patent Publication No. 10-1564775 (announced on November 2, 2015) Registered Patent Publication No. 10-1135600 (2012.04.17. Announcement) Registered Patent Publication No. 10-0877175 (2009.01.07. Announcement)

It is an object of the present invention to manufacture a laser device, a camera, and a lighting unit as an integrated unit, and at the same time, the components are configured in a side column type, and detection accuracy is achieved by matching the detection line connecting points where the emitted laser signals contact the road surface to the lane. And increase the reliability,

It is to provide a side-column vehicle detection system capable of further improving detection accuracy and reliability by performing multiple detections three times within an image captured for a camera for vehicle detection.

The side column type vehicle detection system according to the present invention as conceived to achieve the above object,

In the side column type vehicle detection system including a side column type speed information for controlling an overspeed vehicle by being attached to a column,

The side column type speed information,

camera;

A laser device for transmitting and receiving a plurality of laser signals (L1), ..., (Ln);

A controller that analyzes the laser signals (L1), ..., (Ln) transmitted and received by the laser device to calculate a vehicle speed and then detects a speeding vehicle, and drives the camera when the speeding vehicle is detected;

In a photographing area that is an image photographed by the camera,

A laser detection area based on the laser signal of the laser device;

A vehicle number trigger area formed at the next stage of the laser detection area based on the traveling direction of the vehicle;

To form an image trigger area formed at the next stage of the vehicle number trigger area,

The controller,

When the vehicle is detected in the laser detection area, and when the vehicle is not detected in the laser detection area, the vehicle is detected in the vehicle number trigger area, and when the vehicle is not detected in the vehicle number trigger area, the image trigger area It characterized in that the vehicle is detected at.

In this case, the laser detection area may be formed based on any one selected from among a plurality of laser signals, and preferably, the first point P1 in the vehicle entry direction may be referenced.

According to the side column type vehicle detection system according to the present invention, it is possible to improve the accuracy and reliability of vehicle detection.

In particular, it has the advantage of further improving the accuracy and reliability of vehicle detection by performing multiple detections three times within an image captured for a camera for vehicle detection.

1 is a real photograph showing a conventional speed information.
Fig. 2(a) is a configuration diagram showing the conventional speed information of Fig. 1, and (b) is a plan view of (a).
3A is an exemplary diagram for explaining a single signal detection method applied to a conventional side column type laser detector, and (b) is an exemplary diagram for explaining the speed detection of the single signal detection method of (a). .
4 is an exemplary diagram for explaining a conventional multiple signal detection method.
5 and 5A are perspective views illustrating a side column type speed infoment configured with a side column type vehicle detection system of the present invention installed.
6 is a perspective view showing a side column type speed information constituted by the side column type vehicle detection system of the present invention.
7 is a perspective view showing a state in which the present invention is installed on a post.
8 is a perspective view showing the detachable portion of FIG. 6.
9 is a perspective view showing the laser machine of FIG. 6.
Figure 10 (a) is an exemplary view showing the detection line (F) of the laser signals when the body of the laser machine of the present invention is not rotated, (b) is the body of (a) in one direction (clockwise) It is an exemplary diagram showing the sensing line F when rotated to and (c) is an exemplary diagram showing the sensing line F when the body of (a) is rotated in the other direction (counterclockwise).
11 is a side cross-sectional view of a body showing an optical aiming unit installed in the body of the laser machine of FIG. 9.
12(a) is an exemplary view of an optical aiming unit when the body of the laser device of the present invention is not rotated, and (b) is an exemplary view of an optical aiming unit when the body of the laser device is rotated.
13 is an exemplary diagram for describing laser signals emitted from the laser device of FIG. 9.
14 is a block diagram showing the controller of FIG. 5.
15 is a block diagram illustrating a vehicle speed detector for section 1 of FIG. 14.
16 is a block diagram illustrating an error correction unit of FIG. 14.
17 is a perspective view showing a second embodiment of the present invention.
18 shows a vehicle detection area photographed by a camera of a side column type speed information of the side column type vehicle detection system according to the present invention.

Terms and words used in this specification and claims should not be construed as being limited to their usual or dictionary meanings, and that the inventor can appropriately define the concept of terms in order to describe his own invention in the best way. Based on the principle, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, and various equivalents that can replace them at the time of application And it should be understood that there may be variations.

Hereinafter, prior to the description with reference to the drawings, matters that are not necessary to reveal the gist of the present invention, that is, known configurations that can be obviously added by those skilled in the art are not shown or specifically described. Make the note clear.

The present invention relates to a side-column vehicle detection system.

Specifically, the laser machine, the camera, and the lighting unit are manufactured as an integrated unit, and at the same time, the components are composed of a side column, and the detection accuracy and reliability of detection by matching the detection lines connecting points where the emitted laser signals contact the road surface are matched to the lane. Can increase,

It relates to a side-column vehicle detection system capable of further improving detection accuracy and reliability by performing multiple detections three times in an image captured for a camera for vehicle detection.

The side column type vehicle detection system according to the present invention includes a side column type speed information (1).

5 is a perspective view showing a side-column type speed infomation configured as a side-column vehicle detection system of the present invention is installed.

The side column type speed information 1 according to an embodiment of the present invention is configured to be detachable to the post 20 of the shoulder of the road S and is coupled to the post 20, as shown in FIG. After transmitting the laser signals (L1), (L2), (L3) toward the detection target lane (S1), the reflected signal is collected to calculate the speed of the driving vehicle (C) and detect the speeding vehicle at the same time.

At this time, in the present invention, for convenience of explanation, it has been described as an example that the side column type speed information 1 emits three laser signals L1, L2, and L3, but the quantity of the emitted laser signals is It is not limited to this.

In addition, the side column type speed information (1) displays the vehicle speed detected through the display means (10) so that the driver can recognize his or her speed by reading the monitor, so that the driver can be alert and induce safe driving. There will be.

In addition, the side-column type speed information (1) is the point (P1), (P2), (P3), which are the reflection points where the emitted laser signals (L1), (L2), and (L3) contact the road surface of the lane S1. They are formed in the same width of the lane, but are formed to be spaced apart from each other along the lane direction (I), and the direction of the sensing line (F) can be adjusted so that the sensing line (F) connecting them faces the same direction as the lane direction (I). By being configured so that it is possible to increase detection accuracy and reliability.

That is, the time it takes for the vehicle to reach each of P1, P2, P3 by L1, L2, and L3 and the distance until the laser signal is output and received, or the distance between P1, P2, P3, and the laser signal are output. Based on the time until reception, the calculation of speed using distance and time is performed.

On the other hand, by further providing a configuration for outputting and receiving a laser signal, points Q1, Q2, and Q3 that are further formed separately in the width direction of the lane for each of the aforementioned P1, P2, and P3 can be further included. have. In this case, the vehicle speed is calculated based on the laser signals received at P2 and Q2 from points P1 and Q1, which are linear points in the width direction. As an example, a signal based on a signal received from P1 and then received from Q2 may be used, or a speed obtained by calculating the averaged information of P1-P2 and Q1-Q2 may be determined as the final speed of the vehicle. This is to prevent the speed measurement from being inaccurate, even though the points P1, P2, and P3 are formed in a straight line in the direction of the lane, because the reflective parts are not the same according to the driving method of the vehicle.

In addition, the side column type speed information (1) analyzes the laser signals (L1) and (L2) to calculate the vehicle speed of the first section, and analyzes the laser signals (L2) and (L3) to calculate the vehicle speed of the second section. And, by determining the average value of the vehicle speed for each section as the final speed, detection accuracy and reliability can be improved.

In addition, when calculating the vehicle speed for each section, the side-column speed information 1 calculates vehicle speeds using a single signal detection method and a multiple signal detection method, and then determines the average value of them as the vehicle speed for each section. 2 By canceling the cosine error, the accuracy and reliability of detection can be further improved.

In addition, the side column type speed information 1 determines whether an error has occurred in the speed calculation when the final speed is detected, and if it is determined that an error has occurred, the accuracy and precision of the speed calculation can be improved by correcting the error.

In addition, the side column type speed information (1) detects a speeding vehicle based on the final speed, and when the speeding vehicle is detected, the camera is driven to acquire an image of the speeding vehicle, and at the same time, the acquired image is analyzed through an image analysis algorithm. You will be able to recognize the number.

This side-column type speed information 1 cancels the first and second cosine errors to increase the accuracy and reliability of detection through a multi-lane speed detector with increased accuracy and reliability described in Korean Patent Publication No. 10-1641890. It is revealed that it can be completed and interpreted.

In the following, structural features will be described.

6 is a perspective view showing a side column type speed infomation according to an embodiment of the present invention, and FIG. 7 is a perspective view showing a state in which the present invention is installed on a post.

As shown in Figs. 6 and 7, the side column type speed information 1 is a controller 3, a laser device 5, a lighting unit 6, a camera 7, a support arm 8, and a detachable unit 9 ) And a display means (10).

The support arm 8 is formed in a rod shape having a length, and the controller 3, the laser device 5, the lighting unit 6, and the camera 7 are coupled to the upper portion, but the display means 10 is coupled to the lower portion. .

In addition, the support arm 8 is coupled to the support plate 91 of the detachable portion 9 at one end.

At this time, in the present invention, for convenience of explanation, it has been described for example that the side column type speed information 1 is provided with additional equipment such as a display unit 10, but the side column type speed information 1 is a display unit 10 ) May not be installed, and it is natural that it may be configured to further include additional equipment other than the display means 10.

8 is a perspective view showing the detachable portion of FIG. 6.

As shown in Figure 8, the detachable portion 9 is a plate-shaped support plate 91 and a pair of first fixing frames 93 and 93 ′ that are coupled to one side of the support plate 91 at intervals. ), and a pair of second fixing frames 95 and 95 ′ that are bolted to each of the first fixing frames 93 and 93 ′ by being coupled at intervals to the other side of the support plate 91 Consists of

The support plate 91 is formed of a plate material having an area, and both surfaces thereof are formed in a curved surface, so that the support plate 91 is treated to the outer peripheral surface of the post 20 during installation.

In addition, the support plate 91 is vertically coupled to the support arm 8 at the center of the outer circumferential surface, so that the support arm 8 is vertically connected to the support 20.

The first fixing frame 93 is formed in a strip shape having a length and has a curved surface, and a fastening plate 931 is coupled to an end thereof. At this time, the fastening plate 931 is formed of a plate material in which a bolt hole 933 is formed in the center, and is coupled to an end of the first fixing frame 93.

In addition, one end of the first fixing frame 93 is coupled to one side of the support plate 91, and a fastening plate 931 is coupled to the other end.

In addition, the first fixing frame 93' has the same configuration as the first fixing frame 93, and one end is coupled to one side of the support plate 91 at a distance from the first fixing frame 93.

The second fixing frames 95 and 95' are also formed in the same configuration as the first fixing frames 93 and 93', but are coupled to the other side of the support plate 91 at intervals in the height direction.

In addition, the first fixing frame (93), (93') and the second fixing frame (95), (95') are installed as if facing the outer circumferential surface of the holding (20) during installation to surround the outer circumferential surface of the holding (20). .

When the support plate 91 is abutted to the outer circumferential surface of one side of the post 20, the detachable part 9 configured as described above is the first fixing frame 93, 93' and the second fixing frame 95, 95 ') are joined to the outer peripheral surface of the other side of the post 20, and in this state, the fastening plates of the first fixing frames 93, 93' and the second fixing frames 95 and 95' are bolted The present invention is firmly coupled to the holding (20).

The laser device 5 transmits the laser signals L1, L2, and L3 to the lane S1, and receives the reflected signal. At this time, the laser signals (L1), (L2), (L3) are reflected points (P1), (P2), (P3) that are in contact with the road surface of the lane (S1) are formed in the same width of the lane (S1). They are formed to be spaced apart from each other along the lane direction (I). In addition, the laser device 5 is coupled to one side of the support arm 8.

The lighting unit 6 is driven according to the illuminance to provide illumination required for photographing of the camera, and is coupled to one side of the support arm 8.

The camera 7 performs photographing under the control of the controller 3 to obtain an image of the speeding vehicle, and is coupled to one side of the support arm 8.

When the vehicle speed is detected by the controller 3, the display means 10 displays the detected vehicle speed.

9 is a perspective view showing the laser machine of FIG. 6.

The laser device 5 is a device that emits three laser signals L1, L2, and L3 toward the target lane S1 and receives the reflected signal.

In addition, as shown in Fig. 9, the laser device 5 is formed in a cylindrical shape, and a power supply unit for emitting a laser signal therein, an electric element, an electric circuit and a body 51 installed therein, and a rotational motion is generated. The driving means 531 is coupled to the rotation shaft 533 of the driving means 531 through a rotating part 53 installed therein, and one end of the rotating part 53 is coupled to the other end of the body 51 A rotation shaft 55 that is coupled to the rear and rotates the body 51 according to the rotation of the driving means 531, and a laser transmission unit 571 for transmitting and receiving each of the laser signals L1, L2, and L3, and It consists of a laser receiving unit 573 and consists of first, second, and third laser units 57, 58, and 59 installed to be spaced apart from the front of the body 51.

At this time, the laser device 5 is not shown in the drawing, but is installed inside the body 51, but is connected to the front window 541 of the front of the body 51, so that the laser signals (L1), (L2), (L3) are It includes an optical collimating unit 54 of FIG. 11 to be described later for providing the direction of the sensing line F to the operator.

In addition, in the present invention, for convenience of explanation, the driving means for driving the body 51 has been described as being composed of the motor 531, but the configuration of the driving means is not limited to the motor 531, and the actuator ( Actuators, cylinders, etc., a variety of known techniques and methods capable of generating rotational motion can be applied, and can be configured manually.

In addition, in the present invention, for convenience of explanation, the body 51 has been described as being formed in a cylindrical shape, but the shape of the body 51 is not limited thereto, and a plurality of laser parts on the front surface are spaced in the height direction. It may be formed of a polyhedron and a polygonal column that are installed with

The body 51 is formed in a cylindrical shape in which a power supply unit for driving the first, second, and third laser units 57, 58, and 59, an electric device, an electric circuit, and a controller are installed therein. At this time, components such as a pulse generator, a laser diode, a pulse receiving unit, an avalanche photo diode (APD), an amplifier for driving the first, second, and third laser units 57, 58, and 59 are laser Since it is a technology commonly used in the transceiver, a detailed description will be omitted, and the controller will be described in detail in FIG. 14 to be described later.

In addition, the body 51 has first, second, and third laser parts 57, 58, and 59 formed on the front side, and the first, second, and third laser parts are spaced apart in the height direction. Is formed.

In addition, the body 51 has a front window 541 communicating with the optical aiming unit 54 on the front side.

In addition, the body 51 is configured to rotate by the rotation of the rotation shaft 55 is coupled to the rear surface of the rotation shaft 55, the operator after determining the rotation angle of the body 51 through the optical aiming unit 54, the drive means ( By rotating the body 51 through 531 at a determined rotation angle, the detection lines F of the laser signals L1, L2, and L3 are formed parallel to the lane direction.

The rotating part 53 is provided with a motor 531 which is a driving means for generating a rotational motion therein, and the rotating shaft 533 of the motor 531 is coupled to one end of the rotating shaft 55 to rotate the motor 531 According to the rotation shaft 55 is rotated.

At this time, although not shown in the drawing, it is configured to control the driving and rotation direction of the motor 531 through an operation panel (not shown).

The rotation shaft 55 has one end passing through the rotation part 53 and is coupled to the rotation shaft 533, and the other end is coupled to the rear surface of the body 51.

The operation process of the laser device 5 configured as described above will be described with reference to FIGS. 10 to 15.

Figure 10 (a) is an exemplary view showing the detection line (F) of the laser signals when the body of the laser machine of the present invention is not rotated, (b) is the body of (a) in one direction (clockwise) It is an exemplary diagram showing the sensing line F when rotated to and (c) is an exemplary diagram showing the sensing line F when the body of (a) is rotated in the other direction (counterclockwise).

As shown in Figure 10 (a), the laser device 5 has the first, second, and third laser parts 57, 58, and 59 on the front surface 511 of the body 51. It is formed at intervals in the direction. At this time, the laser device 5 of FIG. 10 shows the front surface 511 on which the laser units 57, 58, and 59 are formed.

In this state, when each of the laser signals L1, L2, and L3 is emitted from the laser transmission unit 571 of the first, second, and third laser units 57, 58, and 59, the laser Points (P1), (P2), (P3) where signals (L1), (L2), (L3) are in contact with the road surface are formed, and a sensing line connecting points (P1), (P2), (P3) (F) is formed to be inclined at a predetermined angle without being parallel to the lane direction (I). Therefore, when the vehicle speed is calculated without the detection line (F) parallel to the lane direction (I), the calculated vehicle speed (V') is not the speed vector for the actual vehicle traveled, but the detection line (F). Because it is a velocity vector for ), the accuracy of velocity calculation is poor. At this time, a position in which the laser units 57, 58, and 59 are not rotated, and specifically, a position perpendicular to the ground, is referred to as the reference direction Z.

The present invention is to solve this problem, the laser device 5, as shown in Figure 10 (b), assuming that the body 51 is rotated in the counterclockwise direction, the laser signals (L1), (L2) ), the detection lines (F) of (L3) are formed to be more inclined in the lane direction (I), and as shown in (c) of FIG. 10, assuming that the body 51 is rotated in the clockwise direction, the laser signal ( The sensing lines (F) of L1), (L2) and (L3) become close to parallel with the lane direction (I).

Using this principle, the laser device 5 of the present invention is configured to rotate the body 51 so that the sensing line F of the emitted laser signals is formed horizontally in the lane direction I, and thus the speed It is possible to increase the accuracy and reliability of detection.

In this case, the laser device 5 can check whether the detection line F and the lane direction I are horizontal through the optical aiming unit of FIG. 11 to be described later.

11 is a side cross-sectional view of a body showing an optical aiming unit installed in the body of the laser machine of FIG. 9.

The optical aiming part 54 of FIG. 11 is a number extending vertically from the aiming hole 540 by being formed in a lower part of one side of the aiming hole 540 formed to penetrate the front and rear surfaces of the body 51 and the aiming hole 540 Weaver 542, a front window 541 installed at one end of the aiming hole 540 formed on the front of the body 51, and the other end of the aiming hole 540 formed on the rear of the body 51 A rear window 541 installed in the, and a light emitting part 544 installed on the bottom wall 543 of the aiming hole 540 to emit light toward the aiming hole 540, and a cross-shaped pattern formed therein It is installed in the reticle 545 installed in front of the light emitting part 544 and the vertical hole 542 at a position adjacent to the aiming hole 540 to be emitted from the light emitting part 544 to generate a reticle 545 A collimation lens 546 that adjusts the passed light in parallel with each other, and the collimation lens 546 is installed at an angle to the aiming hole 540 directly above the collimation lens 546 to transfer incident light to the rear window 549. It consists of a semi-transmissive mirror 547 that reflects.

At this time, in the present invention, for convenience of explanation, the inside of the body 51 has been described as being sealed, but the body 51 has the first, second, and third laser parts 57, 58, and Constituent means, such as a pulse generator, a laser diode, a pulse receiving unit, an avalanche photo diode (APD), and an amplifier, for driving the 59 are installed.

The optical aiming unit 54 configured as described above secures the operator's field of view through the rear window 549 -> aiming hole 540 -> the front window 541, and the light irradiated from the light emitting unit 544 is reticle As it passes through 545, a cross shape is formed. In this state, as the light passes through the collimation lens 546, the parallelism increases and the dispersion decreases, and the light is reflected by the semi-transmissive mirror 547, so that a cross-shaped optical pattern is formed on the rear window 549. Will be formed.

In addition, in the present invention, for convenience of explanation, the optical aiming unit 54 has been described for example that the field of view is simply secured through the aiming hole 540, but the optical aiming unit 54 is an eyepiece for expanding the field of view, An objective lens, a field lens, a prism, and the like may be further configured.

In addition, in the present invention, the configuration in which the pattern is formed on the rear window 549 is described as being made by the optical aiming unit 54, but the pattern forming means is not limited thereto, and various known methods may be applied.

12(a) is an exemplary view of an optical aiming unit when the body of the laser device of the present invention is not rotated, and (b) is an exemplary view of an optical aiming unit when the body of the laser device is rotated.

With reference to FIG. 12, the pattern direction formed by the optical aiming unit according to the rotation direction of the body of the laser device will be described. At this time, the laser device 5 of FIG. 12 shows the front surface on which the laser units are formed.

The optical collimator 54 is a cross-shaped pattern 80 on the rear window 549 as shown in FIG. 12A when the front surface 511 of the body 51 is not rotated in the reference direction Z. ) Is formed vertically so that the operator can recognize that the vertical line 81 of the pattern 80 is inclined with the driving direction of the lane direction I or the vehicle C.

That is, in the laser machine 5 of the present invention, the first, second, and third laser units 57, 58, and 59 are formed at an interval on the front surface 511 of the body 51 in a vertical direction. Therefore, the vertical line 81 of the pattern formed on the rear window 549 forms the same direction as the detection line F of the laser signals L1, L2, and L3.

Using this principle, when the vertical line 81 of the pattern 80 does not coincide with the lane direction I, the operator rotates the body 51 as shown in FIG. The vertical line 81 can be corrected parallel to the lane direction (I), and accordingly, the detection lines (F) of the laser signals (L1), (L2) and (L3) are also formed parallel to the lane direction (I). It is possible to accurately detect the speed of the passing vehicle.

The vehicle speed detection process of the laser device 5 configured as described above will be described with reference to FIGS. 13 to 15.

13 is an exemplary diagram for describing laser signals emitted from the laser device of FIG. 9.

The points (P1), (P2), (P3) of the laser signals (L1), (L2), (L3) of FIG. 13 are formed by the optical aiming unit 54 and the driving means 531 as described above. These are laser signals emitted after 51) is rotated so that the sensing line F is formed to coincide with the lane direction I.

In addition, each of the laser signals (L1), (L2), (L3) is emitted to be spaced apart from each other in the same width of the lane and in the lane direction (I), and when viewed from a plane, the lane direction (I) and'θ' It is emitted to have the same inclination angle of.

Accordingly, when the vehicle is driving, the laser signal L1 is first reflected to the passing vehicle, and the laser signals L2 and L3 are reflected in order.

In consideration of the characteristics of the laser signals (L1), (L2) and (L3) generated by the laser device 5 configured as described above, the controller 3 analyzes the laser signals (L1) and (L2) to determine the vehicle speed for one section. Is detected, and the vehicle speed in two sections is detected by analyzing the laser signals (L2) and (L3).

In addition, the controller 3 detects the vehicle speed in two ways when detecting the vehicle speed for each section, and then determines the average value thereof as the vehicle speed for each section. Hereinafter, an example will be described as detecting the vehicle speed in section 1 using the laser signals L1 and L2, and the vehicle speed detection in section 2 is also performed in the same manner as the vehicle speed detection in section 1.

The first method, the single signal detection method, analyzes the laser signal (L1) transmitted/received to the entry point (P1) to individually calculate the vehicle speed (V1) of the entry point (P1), and transmits and receives to the exit point (P2). By analyzing the laser signal (L2), the vehicle speed (V2) at the exit point (P2) is calculated individually, and the vehicle speed (V1) at the entry point (P1) and the average speed (V2) of the exit section (P2) are calculated. The calculated average value is determined as the first vehicle speed, which is the speed of the passing vehicle in the corresponding section.

In addition, the second method of detecting the vehicle speed by section of the controller 3, the multiple signal detection method, analyzes the laser signals (L1) and (L2), and when the vehicle enters the entry point (P1) and the exit point (P2). Calculate the distances (D1') and (D2') from the (t1), (t2) and laser machine (5) to the entry point (P1) and exit point (P2), and the distance difference (ΔD' = D2) '― D1') is divided by the time difference (△t = t2-t1) to detect the second vehicle speed, which is the vehicle speed for the corresponding section.

In this multi-signal detection method, as the laser signals (L1) and (L2) are emitted at an angle of'θ', the distances to the emission points (P1) and (P2) (D1') and (D2') are horizontal. The distance (ΔD' = D1'-D2') between the two points (P1) and (P2) is higher than the image distance (D1) and (D2), and has a value smaller than the horizontal distance (ΔD).

In other words, since the separation distance (△D') between the two points (P1) and (P2) has a value smaller than the horizontal distance (△D), an error measured at a low speed (hereinafter referred to as a second cosine error) Will occur.

As such, the controller 3 calculates an average value of the first vehicle speed and the second vehicle speed when the first vehicle speed and the second vehicle speed for the same section are detected by the single signal detection method and the multiple signal detection method, The calculated average value is determined as the vehicle speed of section 1, which is the vehicle speed passing through the section (section 1). At this time, the controller 3 detects the vehicle speed for two sections in the same way.

That is, the controller 3 of the present invention calculates that the first vehicle speed is higher than the actual vehicle speed by the first cosine error when the single signal detection method is applied as the laser signals are emitted obliquely to the lane direction (I). The average value of the first vehicle speed and the second vehicle speed is finally calculated in consideration of the characteristics and the characteristic that the second vehicle speed is calculated at a lower speed than the actual vehicle speed due to the second cosine error when applying the multi-signal detection method. By determining the speed, the first cosine error and the second cosine error can be canceled, and accordingly, the problem that the detection accuracy and reliability of the conventional speed detector decrease due to the first cosine error and the second cosine error can be dramatically solved. do.

14 is a block diagram showing the controller of FIG. 5.

The controller 3 of FIG. 14 includes a communication interface unit 32 that supports data communication with external devices, a memory 33 for storing data, and a laser control unit 34 that controls the laser device 5. , A signal analysis unit 35 that analyzes the laser signal input from the laser control unit 34, and the laser signals L1 and L2 analyzed by the signal analysis unit 35 are analyzed and utilized for one section. Section 1 vehicle speed detection unit 37 for detecting vehicle speed, section 2 vehicle speed detection unit 38 for detecting vehicle speed for section 2, section 1 vehicle speed detection unit 37 and section 2 vehicle speed detection unit 38 The final speed determination unit 39 that determines the final speed of the driving vehicle C by calculating the average value of the vehicle speed detected by ), and whether an error has occurred in the calculation of the final speed determined by the final speed determination unit 39 An error verification unit 40 to determine the error, an error correction unit 41 that is driven when it is determined that an error has occurred in vehicle speed calculation by the error verification unit 40 to correct the error, and a final speed determination unit 39 Alternatively, when the speeding determination unit 42 determines whether or not to overspeed by comparing the final speed or corrected speed determined by the error correction unit 41 with a preset speed limit, and the speeding vehicle is detected by the speed determination unit 42, the camera (7) A camera management unit 43 that obtains an image of a speeding vehicle by transmitting a trigger signal to the camera management unit 43, and a number recognition that recognizes the number of the speeding vehicle by analyzing the image obtained by the camera management unit 43 The unit 44, the display unit 45 for controlling the display unit 10 so that the speed of the traveling vehicle C is displayed on the display unit 10, and these control objects 32, 33, 34 ), (35), (37), (38), (39), (40), (41), (42), (43), (44), (45) Consists of

At this time, in the present invention, for convenience of explanation, there are three laser units. For example, the vehicle speed detection unit is composed of a vehicle speed detection unit for section 1 and a vehicle speed detection unit for section 2 and 38, but the number of vehicle speed detection units is limited to this It is not and may be composed of three or more corresponding to the number of emitted laser signals.

In addition, although not shown in the drawing, the controller 3 may be configured to transmit images and data to the management server and the external server through the communication interface unit 32 and receive the control of the management server.

The control unit 31 is an operating system (OS) of the controller 3, and the control targets (32), (33), (34), (35), (37), (38), (39), (40) , (41), (42), (43), (44), (45) are managed and controlled.

In addition, the control unit 31 inputs the laser signals transmitted and received by the laser device 34 to the signal analysis unit 35.

In addition, the control unit 31 inputs the signal data analyzed by the signal analysis unit 35 to a corresponding vehicle speed detection unit. At this time, the analysis data for the laser signals (L1) and (L2) is input to the vehicle speed detection unit 37 for section 1, and the analysis data for the laser signals (L2) and (L3) is input to the vehicle speed detection unit 38 for the second section. .

In addition, the control unit 31 drives the error verification unit 40 when the final speed v is determined by the final speed determination unit 39.

In addition, if it is determined that an error has not occurred in the speed calculation by the error verification unit 40, the control unit 31 uses the final speed v determined by the final speed determination unit 39 to the speeding determination unit 42. Input, and if it is determined that an error has occurred in the speed calculation by the error verification unit 40, the speed corrected by the error correction unit 41 is input to the overspeed determination unit 42.

The memory 33 includes signal information of the laser signals L1, L2, and L3 transmitted and received by the laser device 5, the final speed information determined by the final speed calculation unit 39, and an error correction unit. The speed information corrected by (41), the speeding vehicle information detected by the speeding determination unit 42, and image information acquired by photographing by the camera 7 are stored.

In addition, preset first set values TH1 and Threshold1 and second set values TH2 and Threshold2 are stored in the memory 33. At this time, the first set value TH1 is defined as the maximum speed difference value that can be determined that no error has occurred, and the second set value TH2 is the maximum speed difference with the previous vehicle that can be determined that no error has occurred. Defined by value.

The laser controller 34 manages and controls the laser device 5, and inputs the laser signals L1, L2, and L3 transmitted and received by the laser device 5 to the controller 31, and the controller ( 31) inputs the laser signals L1, L2, and L3 input from the laser control unit 34 to the signal analysis unit 35.

15 is a block diagram illustrating a vehicle speed detector for section 1 of FIG. 14.

The vehicle speed detection unit 37 in section 1 of FIG. 15 detects the first vehicle speed, which is the vehicle speed of the section in which the passing vehicle is detected by the laser signals L1 and L2.

In addition, the vehicle speed detection unit 37 for section 1 analyzes the laser signals L1 and L2 input from the signal analysis unit 35 using the single signal detection method described above, and is the speed of the passing vehicle traveling in the 1 section. The first vehicle speed calculation module 370 that detects the first vehicle speed and the laser signals L1 and L2 input from the signal analysis unit 35 are analyzed using the above-described multiple signal detection method, The vehicle calculated by the second vehicle speed calculation module 380, which detects a second vehicle speed, which is the speed of the passing vehicle, and the first vehicle speed calculation module 370 and the second vehicle speed calculation module 380 It consists of a one-section vehicle speed determination module 390 that calculates the average value of the speeds and determines the calculated average value as the one-section vehicle speed.

The first vehicle speed calculation module 370 detects the first vehicle speed of the driving vehicle passing through a section from the entry point P1 to the exit point P2. At this time, the first vehicle speed is defined as the average value of the individual vehicle speeds calculated after separately calculating the vehicle speed of the passing vehicle with respect to the entry point P1 and the vehicle speed of the passing vehicle with respect to the exit point P2.

In addition, the first vehicle speed calculation module 370 utilizes the analysis data for the laser signals L1 and L2 transmitted and received to the entry point P1 and the exit point P2, and the entry point P1 and the exit point ( The vehicle speeds (V1') and (V2') in P2) are calculated, the average value of the calculated vehicle speeds (V1') and (V2') is calculated, and the calculated average value is determined as the first vehicle speed.

The second vehicle speed calculation module 380 of FIG. 15 detects the second vehicle speed of the driving vehicle passing through a section from the entry point P1 to the exit point P2 using the above-described multiple signal detection method. . At this time, the second vehicle speed is defined as the vehicle speed calculated according to the above-described multiple signal detection method using the passage time for the vehicle to pass through the first section and the distance difference between the entry point and the exit point.

In addition, the second vehicle speed calculation module 380 calculates the elapsed time (△T) that the driving vehicle has passed through the first section by using the analysis data of the laser signals (L1) and (L2), and from the laser device 5 After calculating the distances (D1') and (D2') to the entry point (P1) and exit point (P2) of section 1, the distance difference (△D' = D1'-D2') is calculated, and the calculated distance A value calculated by dividing the car (ΔD') by the elapsed time (ΔT) is determined as the second vehicle speed.

At this time, the second vehicle speed calculation module 380 must separately calculate the distances'D1' and'D2' from the laser transmission unit to the entry point (P1) and exit point (P2) of section 1, and'D1' ,'D2' can be calculated by multiplying the elapsed time from transmission of the laser signal to reception by the speed of light.

In addition, the second vehicle speed calculation module 380 calculates a distance difference (ΔD') by subtracting'D2' from the calculated'D1'. At this time, the calculated distance difference (ΔD') is calculated to be less than the actual horizontal distance (ΔD) as the laser signal is emitted obliquely.

In addition, the second vehicle speed calculation module 380 divides the calculated distance difference ΔD' by the time difference ΔT and detects the second vehicle speed of the driving vehicle passing through the first section.

In addition, since the second vehicle speed calculation module 380 calculates the distance difference (ΔD') to be less than the actual horizontal distance (D), the second vehicle speed is a second cosine error that is measured at a lower speed than the actual vehicle speed. Occurs.

As described above, the first vehicle speed detected by the first vehicle speed calculation module 370 of the present invention has a higher value than the actual vehicle speed due to the first cosine error, and the second vehicle speed calculation module 380 The detected vehicle speed has a value lower than the actual vehicle speed due to the second cosine error.

The first vehicle speed determination module 390 of FIG. 15 includes a first vehicle speed calculated by the first vehicle speed calculation module 370 and a second vehicle speed calculated by the second vehicle speed calculation module 380. The average value is calculated, and the calculated average value is finally determined as the vehicle speed of the driving vehicle.

As described above, the vehicle speed determination module 390 for section 1 cancels the first cosine error of the first vehicle speed calculated higher than the actual vehicle speed and the second cosine error of the second vehicle speed calculated lower than the actual vehicle speed. The accuracy and reliability of detection can be remarkably improved.

The two-section vehicle speed detection unit 38 of FIG. 14 detects the speed of the vehicle passing through the second section, which is a section in which the traveling vehicle is detected by the laser signals L2 and L3, and the vehicle speed detection section 38 and It proceeds in the same way.

The final speed determination unit 39 calculates an average value of the vehicle speed in section 1 detected by the vehicle speed detection unit 37 in section 1 and the vehicle speed in section 2 detected by the vehicle speed detection section 38 and the calculated The average value is determined as the final speed of the passing vehicle.

In addition, when the final speed is determined by the final speed determination unit 39, the control unit 31 inputs the vehicle speed in section 1 and the vehicle speed in section 2 of the passing vehicle C to the error verification unit 40, so that the error verification unit ( 40).

The error verification unit 40 compares the absolute difference value (Δv) between the vehicle speed in section 1 and the vehicle speed in section 2 with a preset first set value (TH1: Threshold). At this time, the first set value TH1 is defined as a maximum speed difference value that can be determined that no error has occurred.

In addition, if the absolute value (Δv) of the difference between the vehicle speed in section 1 and the vehicle speed in section 2 is greater than or equal to the first set value (TH1), an error occurs when detecting the vehicle speed in section 1 or vehicle speed in section 2 I judge that I did. At this time, if it is determined that an error has occurred in vehicle speed detection by the error verification unit 40, the control unit 31 inputs the vehicle speed for section 1 and the vehicle speed for section 2 to the error correction unit 41, and if the error verification unit 40 If it is determined that no error has occurred in vehicle speed detection by ), the final speed (v) correction is not performed.

For example, if the first set value (TH1) is set to '5km/h', the vehicle speed for section 1 of the vehicle'A' is detected as '82km/h' and the vehicle speed for section 2 is detected as '70km/h'. When this occurs, the error verification unit 40 is 1 because the absolute value of the difference between the vehicle speed in section 1 and the vehicle speed in section 2 (12 km/h = 82 km/h-70 km/h) is greater than the first set value (5 km/h). It is determined that an error has occurred in the detection of the section vehicle speed or the second section vehicle speed.

16 is a block diagram illustrating an error correction unit of FIG. 14.

The error correction unit 41 of FIG. 16 is driven when it is determined that an error has occurred in the vehicle speed detection by the error verification unit 40, and passes through any one of the input vehicle speed in section 1 and vehicle speed in section 2 ( It is decided by the final speed of C).

In addition, the error correction unit 41 searches for vehicle speed information stored in the memory 33 and reads the vehicle speed of the previous driving vehicle from the memory 33, and a data reading module 411, a vehicle speed for section 1 and a vehicle speed for section 2, The difference calculated by the absolute difference value calculation module 413 and the difference absolute value calculation module 413 respectively calculating the difference absolute values of the vehicle speed of the previous driving vehicle read by the vehicle speed and the data reading module 411 A comparison module 415 that compares the absolute value with a preset second set value TH2 and compares whether the difference absolute value is less than the second set value TH2, and a comparison module among vehicle speeds in section 1 and vehicle speed in section 2 The vehicle speed correction module 417 corrects the vehicle speed whose absolute difference value is less than the second set value TH2 by 415 to the final speed v of the traveling vehicle C. At this time, the second set value TH2 is defined as a maximum speed difference value from the previous vehicle that can be determined that no error has occurred.

Meanwhile, the speeding determination unit 42 of FIG. 14 receives the final speed (v) detected by the final speed determination unit 39 or the final speed (v) corrected by the error correction unit 41. The speed (v) is compared to the preset speed limit, and if the final speed (v) exceeds the speed limit, the traveling vehicle (C) is judged as an overspeed vehicle.

The camera management unit 43 is driven when a speeding vehicle is detected by the speeding determination unit 42, and generates a trigger signal and transmits it to the camera 7 to capture the speeding vehicle by the camera 7 The image for is obtained.

The number recognition unit 44 recognizes the vehicle number of the speeding vehicle by analyzing the image acquired by the camera management unit 43 using a preset image analysis algorithm. At this time, since the method and technology for recognizing the vehicle number of the vehicle license plate after detecting the vehicle license plate through image analysis is a technology commonly used in the number recognition system, a detailed description will be omitted.

The display unit 45 allows the driver to display the final speed v detected by the final speed determination unit 39 or the final speed v corrected by the error correction unit 41 through the display unit 10 Is to recognize the own speed through the reading of the display means (10) to drive safely.

As described above, in the present invention, the accuracy and reliability of the speed detection can be improved by detecting the vehicle speed in section 1 and the vehicle speed in section 2 using the laser signals (L1), (L2), and (L3). Comparing the vehicle speeds of the two sections to determine whether an error has occurred when detecting the speed, and comparing the speed of the previous vehicle when it is determined that an error has occurred, and correcting the vehicle speed without error to the final speed (v), The reliability can be further improved.

17 is a perspective view showing a second embodiment of the present invention.

In the second embodiment of the present invention, the side column type speed information 800 is provided with a controller (not shown) inside, as shown in FIG. 17, but a pair of laser machines 5 and 5' , The lighting unit 6, the first housing 801 in which the camera 7 is installed, the second housing 801' in which the display means 10 is installed on the front, the first housing 801 and the second housing It consists of detachable parts (9) and (9') for attaching and detaching (801') to the post (20).

As described above, the side column type speed infoment 800, which is the second embodiment of the present invention, can be more easily installed and disassembled by installing a constituent means in the front and inside of the enclosure.

In addition, although not shown in the drawings, the quantity and appearance of the enclosure are not limited thereto, and it is natural that it may be configured in various quantities and appearances. For example, it may be configured as having all the constituent means installed in one enclosure, or may be configured in a manner that characterizes the appearance of the enclosure in order to increase familiarity.

On the other hand, the controller 3 of the side-column type speed information according to the third embodiment performs vehicle detection three times on the image captured by the camera 7 as shown in FIG. 18 of the attached drawing. To improve reliability and accuracy.

18 shows a vehicle detection area photographed by a camera of a side column type speed information of the side column type vehicle detection system according to the present invention.

The camera 7 secures an image in the photographing area as shown in FIG. 18.

The controller may further include an image analysis unit (not shown in the drawing), and performs multiple detection by classifying a vehicle number trigger area and an image trigger area in the image through the image analysis unit. Multiple detection through the generation of such a trigger may be performed through pixel analysis in an image, or a predetermined algorithm may be applied.

In other words, based on the image information acquired through the camera, the vehicle is detected in the laser detection area in which the points by the laser device 5 described above are connected to the horizontal axis in the image, and if the vehicle is not detected, the secondary In the vehicle number trigger area, vehicle detection is performed.

At this time, the point by the laser machine means the point that first touches the vehicle among the aforementioned P1, P2, and P3, and the laser detection area is formed horizontally based on P1 in the drawing standard, the point that first touches the vehicle. I can.

Alternatively, it may be a point for each of P1, P2, and P3. That is, a plurality of laser detection regions can be formed.

Alternatively, as described above, P1, P2, P3, etc. may be formed horizontally by connecting them with an axis based on the one formed in the width direction of the lane by rotating the laser machine. This can be selected by a combination of embodiments.

In addition, the points P1, P2, and P3, which are the above-described points, may be formed for a plurality of lanes through the addition of laser equipment. In this case, even if the vehicle moves in a diagonal direction to change lanes, etc., by performing license plate detection through the above-described third vehicle detection, it is possible to calculate the speed of the vehicle as well as the exact distance calculation. You can do it.

On the other hand, if it is not performed in the vehicle number trigger area, which is the secondly performed detection described above, the third vehicle detection is performed in the image trigger area to prevent missed vehicle detection in the corresponding image information, and reliability of detection. And accuracy can be improved.

On the other hand, a plurality of image trigger regions according to the third embodiment described above may be formed for one lane. In this case, the image analysis unit of the controller 3 includes a vehicle license plate through pixel analysis of a plurality of image trigger regions. An analysis to select the image trigger area with the highest area weight is performed.

Thereafter, the image analysis unit performs a function of gradually expanding the selected image trigger area (hereinafter, referred to as'selected image trigger area') because the area including the analyzed vehicle license plate has the highest proportion. In this case, the enlargement of the image trigger region is a principle of increasing the position at which the image trigger region is located by one pixel based on the pixel.

In addition, the enlarged direction targets the direction including the vehicle license plate. For example, when the vehicle license plate is analyzed in the lower right and lower right directions of the right side of the image trigger area, that is, the lower right direction of the image trigger area, the corresponding image trigger area is expanded to the right side and the lower direction.

In the process of performing the expansion, it functions to stop the expansion when the vehicle license plate is detected.

Through the addition of such a function, the side column type speed information 1 provided in the side column type vehicle detection system according to the present invention may further improve the reliability and accuracy of vehicle detection.

What has been described with reference to the drawings above is a description of only the main matters of the present invention, and it is obvious that the present invention is not limited to the configuration of the drawings as various designs are possible within the technical scope.

1: Side cast type speed information 3: Controller
5: Laser unit 6: Illumination unit 7: Camera
8: support arm 9: attachment and detachment 10: support
20: holding 31: control unit 32: communication interface unit
33: memory 34: laser control unit 35: signal analysis unit
37:1 section vehicle speed detection section 38:2 section vehicle speed detection section
39: final speed determination unit 40: error verification unit 41: error correction unit
42: overspeed judgment unit 43: camera management unit 44: number recognition unit
45: display portion 51: body 53: rotating portion
55: rotating shaft 57: first laser unit

Claims (9)

In the side column type vehicle detection system including a side column type speed information for controlling an overspeed vehicle by being attached to a column,
The side column type speed information,
camera;
A laser device for transmitting and receiving a plurality of laser signals (L1), ..., (Ln);
A controller that analyzes the laser signals (L1), ..., (Ln) transmitted and received by the laser device to calculate a vehicle speed and then detects a speeding vehicle, and drives the camera when the speeding vehicle is detected;
The laser machine,
While allowing points (P1), ..., (Pn) based on a plurality of laser signals to be formed in the longitudinal direction of the lane,
In addition, the points (Q1), ..., (Qn) forming a pair formed in the width direction of the lane are formed for each of the points (P1), ..., (Pn),
The speed obtained by calculating the average information of P1-Pn and Q1-Qn is determined as the final speed of the vehicle,
The controller,
In a photographing area that is an image photographed by the camera
A laser detection area based on the laser signal of the laser device;
A vehicle number trigger area formed at the next stage of the laser detection area based on the traveling direction of the vehicle;
To form an image trigger area formed at the next end of the vehicle number trigger area,
When the vehicle is detected in the laser detection area, and when the vehicle is not detected in the laser detection area, the vehicle is detected in the vehicle number trigger area, and when the vehicle is not detected in the vehicle number trigger area, the image trigger area By performing vehicle detection in
A vehicle detection system for side-column type, characterized in that, by changing lanes, detecting a license plate of a vehicle moving in a diagonal direction, and calculating a vehicle speed of the detected license plate.
delete The method according to claim 1,
Side column type speed information,
A support arm formed in a rod shape to which a laser machine, a controller, and a camera are coupled to one side;
Consisting of a support plate having both sides formed in an arc shape, to which the support arm is coupled to the outer circumferential surface, and a support plate in which the support arm is coupled to the outer circumferential surface, and one end is coupled to both sides of the support plate, and the other ends are coupled to each other It further includes a detachable part;
The laser machine,
A body in which a power supply unit, an electric device and an electric circuit are installed therein;
Laser transmitting and receiving units formed on the front surface of the body to be spaced apart from each other in the height direction to transmit and receive the laser signals (L1), ..., (Ln) respectively;
A driving means for generating a rotational motion, a rotating part in which the driving means is installed, and a rotating shaft having one end coupled to the rear surface of the body, the other end passing through one surface of the rotating part and coupled to the rotating shaft of the driving means. Includes a driving unit made,
The body is rotated by the driving means so that the detection line connecting points, which are points at which the laser signals (L1), ..., (Ln) transmitted and received by the laser transmission and reception units are in contact with the road surface, is parallel to the lane direction. A side-column vehicle detection system, characterized in that.
The method of claim 3,
Fastening plates formed in a plate shape and having a bolt hole in the center are installed at the ends of the fixing frames,
The attachable and detachable part is coupled to the post as the bolts are fastened in a state in which the fastening plates are treated.
The method of claim 4,
The side column type speed information further includes a lighting unit that provides illumination according to illuminance, and a display means for displaying the vehicle speed calculated by the controller,
The lighting unit and the display means are coupled to the support arm.
The method of claim 5,
The laser device further includes an optical aiming unit,
The optical aiming unit
An aiming hole penetrating the front and rear surfaces of the body;
A front window and a rear window installed on the front and rear surfaces of the body and connected to the aiming hole;
And a pattern forming means for forming a cross-shaped pattern on the rear window,
The pattern forming means
A vertical hole vertically connected to a lower side of the aiming hole;
A light emitting unit installed on the bottom wall of the vertical hole and emitting light toward the aiming hole;
A reticle formed in a cross-shaped pattern and installed in front of the light emitting unit;
The pattern forming means is installed at a position adjacent to the aiming hole of the vertical hole, a collimation lens for adjusting the light that has passed through the reticle in parallel, and the collimation lens is installed inclined in the aiming hole directly above the collimation lens. A side-column vehicle detection system, comprising a semi-transmissive mirror that reflects light passing through a collimation lens to the rear window.
The method of claim 6,
The controller is
A laser control unit for controlling the laser device;
A signal analysis unit that analyzes the transmitted and received laser signals (L1), ..., (Ln) input from the laser control unit;
Vehicle speed detection units for each section for calculating vehicle speeds for each section by analyzing the adjacent laser signals when the area in which the passing vehicle is detected by the adjacent laser signals is a section;
A final speed determination unit for determining an average value of vehicle speeds for each section calculated by the vehicle speed detection units for each section as a final speed,
Each of the vehicle speed detection units for each section
Calculate by analyzing each of the adjacent laser signals individually, detecting individual velocities, which are the velocities at the contact point, which is the point where each laser signal is contacted by the passing vehicle, and calculating the average value of the detected individual velocities. A first vehicle speed calculation module that determines the averaged value as the first vehicle speed of the passing vehicle;
After analyzing the adjacent laser signals to calculate the elapsed time (Δt), which is the time at which the passing vehicle is detected, each of the adjacent laser signals is analyzed to reach the point at which each laser signal contacts the passing vehicle. A second vehicle speed calculation module that calculates distance differences and divides the distance difference by the elapsed time (Δt) to determine a second vehicle speed of the passing vehicle;
The end of the section in which the average value calculated by calculating the average value of the first vehicle speed calculated by the first vehicle speed calculation module and the second vehicle speed calculated by the second vehicle speed calculation module is determined as the vehicle speed of the corresponding section Characterized in that it comprises a speed determination module, side column type vehicle detection system.
The method of claim 7,
The first vehicle speed calculation module calculates the distance from the laser device to the point at which each laser signal contacts the passing vehicle by multiplying the time difference between the emission and reception points of the adjacent laser signals and the speed of light. Afterwards, a side-column vehicle detection system, characterized in that the speed is detected using a distance change rate per unit time.
The method of claim 8,
The controller further includes an error verification unit and an error correction unit,
The error verification unit calculates the absolute difference values (Δv) of each of the vehicle speeds for each section detected by the vehicle speed detection units for each section, and then determines that an error has not occurred with each calculated absolute difference value (Δv). Compared to a first set value (TH1, Threshold1) defined as the maximum possible speed difference value, and when any one of the absolute difference values is greater than the first set value (TH1), the vehicle speeds for each section are detected. Judging that an error has occurred,
The error correction unit
It is driven when it is determined that an error has occurred by the error verification unit, and after calculating the absolute difference values between each of the vehicle speeds for each section and the vehicle speed of the previous vehicle, it is determined that no error has occurred. A comparison module comparing a second set value (TH2, Threshold) which is a maximum speed difference value that can be performed with a previous vehicle;
And a vehicle speed correction module for correcting a vehicle speed having an absolute difference value less than the second set value TH2 to a final speed by the comparison module.

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