KR102270883B1 - System for collecting traffic information and operating method thereof - Google Patents

Abstract

Disclosed is a system for collecting traffic information of vehicles passing on a road including one or more lanes. The system includes a first distance sensor, a second distance sensor, and a control module for calculating vehicle traffic information based on information detected by the first and second distance sensors, the first distance sensor and the second distance sensor The distance sensor is spaced apart from each other by a predetermined distance and disposed side by side on one side of the road, and is offset from the ground by a predetermined distance to emit a laser beam in the direction of the road, but detects the wheels of a passing vehicle, and the control module includes the first distance sensor and based on the information detected by the second distance sensor, the vehicle traveling speed information may be calculated. Accordingly, traffic information can be effectively collected.

Description

Traffic information collection system and its driving method {SYSTEM FOR COLLECTING TRAFFIC INFORMATION AND OPERATING METHOD THEREOF}

The present invention relates to a system for collecting traffic information of a driving vehicle and a driving method thereof.

Vehicle detectors using various sensors such as loop type, image type, and geomagnetic type are installed on roads, and traffic information is generated, utilized, and provided using detection data.

Here, since the loop type and geomagnetic sensor must be installed in a way that the road is cut and the sensor is buried, the road must be blocked during installation and repair, and the road surface is damaged. In addition, since the image sensor uses a camera, the accuracy of vehicle detection at night is not high, and a structure with a height of about 12 m must be installed to detect the entire lane, so the cost burden is rather high, and maintenance is difficult.

Therefore, it is intended to develop a detection method that satisfies the detection accuracy without distinction between day and night even though it is a non-buried type that can compensate for the shortcomings of the existing detection method.

On the other hand, the above information is only presented as background information to help the understanding of the present invention. No determination has been made, nor is any claim made as to whether any of the above is applicable as prior art to the present invention.

Laid-Open Patent Publication No. 2003-0080284 (published date: October 17, 2003)

The present invention has been devised to solve the above-described problems, and an embodiment of the present invention proposes a system for collecting traffic information of a driving vehicle and a driving method thereof.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be able

A system for collecting traffic information of a vehicle passing on a road including one or more lanes according to an embodiment of the present invention includes: a first distance sensor; a second distance sensor; and a control module for calculating traffic information of the vehicle based on information detected by the first distance sensor and the second distance sensor, wherein the first distance sensor and the second distance sensor are at a predetermined distance from each other. Spaced apart and arranged side by side on one side of the road, the laser beam is emitted in the direction of the road at a predetermined distance offset from the ground, but detects a wheel of a passing vehicle, and the control module includes the first distance sensor and the second Based on the information detected by the distance sensor, vehicle travel speed information is calculated.

In some embodiments, the control module may calculate the driving speed of a specific vehicle based on the following [Equation 1].

[Equation 1]

V = D/S1

(Where D is the distance difference between the first distance sensor and the second distance sensor, and S1 is the absolute value of the difference between the detection timing of the first distance sensor and the detection timing of the second distance sensor for the specific wheel of the specific vehicle. , where V is the driving speed of a specific vehicle).

In addition, the control module may calculate the distance DA between the first axle and the second axle of the specific vehicle by the following [Equation 2].

[Equation 2]

DA = V * S2

(Where V is the driving speed of a specific vehicle, S2 is the absolute value of the difference between the detection time of the first axle and the detection time of the second axle measured by the first distance sensor, or the first axle detection time and the second axle detection time measured by the second distance sensor It is the absolute value of the difference between the two axle detection points)

In some embodiments, when the value of DA is shorter than the distance between the first axle and the second axle of the light vehicle, the control module may determine the specific vehicle as a vehicle with three or more axles.

The driving method of a system for collecting traffic information of a vehicle passing on a road including one or more lanes according to an embodiment of the present invention is spaced apart from each other by a predetermined distance and arranged side by side on one side of the road, and a predetermined distance from the ground detecting a wheel of a passing vehicle using a first distance sensor and a second distance sensor that are offset and emit a laser beam in the direction of the road; and calculating driving speed information of the vehicle based on the information detected by the first distance sensor and the second distance sensor.

According to various embodiments of the present disclosure, it does not damage the road during installation and maintenance, does not need to restrict vehicle traffic, and collects traffic information of a driving vehicle that can improve vehicle detection accuracy both during the day and at night A system may be provided.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be.

1 and 2 are diagrams for schematically explaining a system for collecting traffic information of a passing vehicle according to an embodiment of the present invention;
3 is a view for specifically explaining a method for detecting a lane of a vehicle passing by a traffic information collection system according to an embodiment of the present invention;
4 is a block diagram showing the configuration of a traffic information collection system according to an embodiment of the present invention;
5 and 6 are views for explaining the operation of the traffic information collection system according to an embodiment of the present invention, and,
7 is a sequence diagram illustrating a method of driving a traffic information collection system according to an embodiment of the present invention.

Hereinafter, various embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, in describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, a detailed description thereof will be omitted.

1 and 2 are diagrams schematically illustrating a system for collecting traffic information of a passing vehicle according to an embodiment of the present invention. A system for collecting traffic information of a passing vehicle is briefly referred to as a “traffic information collection system”, and the reference numeral 100 in FIG. 4 is used.

1 is a plan view showing that the traffic information collection system 100 is installed on a road, in which a passenger car C1 runs on a first lane, a bus B1 runs on a second lane, and a truck T1 on the third lane. are driving

The traffic information collection system 100 includes a first distance sensor 110A and a second distance sensor 110B, and the first distance sensor 110A and the second distance sensor 110B pass through the point where the sensors are installed. By detecting the wheels of the moving vehicle, it is possible to recognize the vehicle's passage. Specifically, the first distance sensor 110A and the second distance sensor 110B may detect a wheel by emitting a laser beam (R1, R2) and detecting a reflected laser beam.

Referring to FIG. 2 , the first distance sensor 110A may be spaced apart from the ground by 5 to 10 centimeters (the second distance sensor is also the same, RD). In some embodiments, the separation distance may be set somewhat differently depending on road conditions.

The traffic information collection system 100 may use the first distance sensor 110A and the second distance sensor 110B to distinguish whether the driving vehicle travels in the first lane or the third lane. Specifically, the first distance sensor 110A disposed on the shoulder is a vehicle traveling in three lanes when the separation distance is 1m to 5m, and a vehicle traveling in two lanes when the separation distance is 5m to 9m, the separation distance When is 9m to 13m, it may be determined as a vehicle traveling in the first lane.

3 is a diagram for explaining a method of classifying a vehicle by a traffic information collection system 100 according to an embodiment of the present invention.

Referring to FIG. 3 , the traffic information collection system 100 may detect a wheel of a vehicle traveling in each lane, and may recognize speed and driving lane information of the corresponding vehicle.

For example, the traffic information collection system 100 first performs the first detection 110A3 using the first distance sensor 110A for a vehicle traveling in three lanes, and uses the second distance sensor 110B. Thus, the secondary detection 110B3 can be performed. Here, the traffic information collection system 100 is a time between the detection time of the primary index 110A3 and the detection time of the second index 110B3 and the distance between the first distance sensor 110A and the second distance sensor 110B. can be used to calculate the driving speed of the vehicle, and it is possible to determine how many axles the driving vehicle includes. The traffic information collection system 100 may recognize the driving speed and axle information of the vehicle traveling in the second lane and the vehicle traveling in the first lane in the same way.

In addition, the traffic information collection system 100 may statistically collect lane ranges of vehicles traveling in each lane. To this end, the traffic information collection system 100 may collect information on the width of each lane, and statistically collect the lane range of a vehicle actually passing. For example, the traffic information collection system 100 may determine whether a vehicle (truck in FIG. 2 ) passing through three lanes is detected in a range of 1 m to 2.5 m to statistically determine the lane range width of the driving vehicle.

Hereinafter, components constituting the traffic information collection system 100 will be described in more detail. 4 is a block diagram showing the configuration of the traffic information collection system 100 according to an embodiment of the present invention.

Referring to FIG. 4 , the traffic information collection system 100 includes a first distance sensor 110A, a second distance sensor 110B, a communication unit 120 , a storage unit 130 , and a control module 140 . However, the components in FIG. 4 are not essential in implementing the traffic information collection system 100 , so the traffic information collection system 100 described herein has more or fewer components than those listed above. It can have elements. In addition, the reference numerals of FIGS. 1 and 2 will be used together while explaining FIG. 4 .

The first distance sensor 110A and the second distance sensor 110B are sensors that emit a laser beam and recognize a reflected laser beam to calculate a distance, and may be spaced apart from each other by a predetermined distance and disposed side by side on one side of the road. have. A distance between the first distance sensor 110A and the second distance sensor 110B may be several tens of centimeters.

In addition, the first distance sensor 110A and the second distance sensor 110B may be offset from the ground by a predetermined distance to emit a laser beam in the direction of the lane to detect a wheel of a passing vehicle.

The communication unit 120 corresponds to a module capable of communicating with an external system. The communication unit 120 may include various wired/wireless communication modules.

The storage unit 130 may be driven under the control of the control module 160 , and the storage unit 130 includes a flash memory type, a hard disk type, and a solid state disk (SSD) type. type), SDD type (Silicon Disk Drive type), multimedia card micro type, card type memory (eg, SD or XD memory, etc.), random access memory (RAM), SRAM (static) a storage medium of at least one type of random access memory), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic memory, magnetic disk, and optical disk etc., may be implemented as a huge system in the form of a server, and various databases may be stored.

The control module 140 may calculate traffic information of the vehicle based on information detected by the first distance sensor 110A and the second distance sensor 110B.

Specifically, based on the information detected by the first distance sensor 110A and the second distance sensor 110B, vehicle traveling speed information may be calculated, and the number of wheels and axles of the traveling vehicle may be calculated. can do.

A method for the control module 140 to collect and calculate various traffic information will be described with reference to FIG. 5 .

Referring to FIG. 5 , the first distance sensor 110A and the second distance sensor 110B are spaced apart from the ground by RD, and the sensors are spaced apart by SD. Here, RD is a distance at which wheels of various vehicles can be recognized, and SD may be set from several centimeters to several tens of meters. In addition, the axle distance DA corresponds to the distance between the first axle and the second axle.

The control module 140 may calculate the driving speed of a specific vehicle based on [Equation 1] below.

[Equation 1]

V = D/S1

Here, D is the distance difference SD between the first distance sensor 110A and the second distance sensor 110B, and S1 is the detection time of the first distance sensor 110A for the specific wheel of the specific vehicle and the second The absolute value of the detection time difference of the distance sensor 110B, the V, represents the traveling speed of a specific vehicle.

Also, the control module 140 may calculate the distance DA between the first axle and the second axle of the specific vehicle by the following [Equation 2].

[Equation 2]

DA = V * S2

V is the driving speed of the specific vehicle measured by Equation 1 above, and S2 is the absolute value of the difference between the detection time of the first axle and the detection time of the second axle measured by the first distance sensor 110A, or the second distance sensor ( 110B) is the absolute value of the difference between the detection time of the first axle and the detection time of the second axle. That is, in the case of a two-axle vehicle, the distance between the front axle and the rear axle may be measured using one distance sensor.

The control module 140 may recognize when the vehicle has three or more axles, such as a heavy truck. It will be described in detail with reference to FIG. 6 .

When the distance DA1 between the first axle and the second axle is shorter than the distance between the first axle and the second axle of the light vehicle, the control module 140 may determine this to be a vehicle with three or more axles. The distance between the axles of the compact car is 2,345 mm, but may be changed depending on the axle of the compact car to be produced later.

Meanwhile, FIG. 7 shows a driving method of the traffic information collection system 100 according to an embodiment of the present invention.

First, the traffic information collection system 100 checks the detection distance for each lane using the first distance sensor 110A and the second distance sensor 110B (S710).

The traffic information collection system 100 may detect a detection distance for each lane according to the number of lanes to be detected.

Thereafter, the traffic information collection system 100 detects the front and rear wheels of the driving vehicle using a plurality of distance sensors ( S720 ).

Next, the traffic information collection system 100 calculates the speed of the passing vehicle and the distance between the axles.

On the other hand, a computer-readable recording medium recording a program for performing a driving method of a system for collecting traffic information of a vehicle passing on a road including one or more lanes on a computer may be provided. When the program is executed by the processor, the processor is spaced apart from each other by a predetermined distance and arranged side by side on one side of the road, the first distance sensor is offset from the ground by a predetermined distance to emit a laser beam in the direction of the road and when a wheel of a passing vehicle is detected using a second distance sensor, calculating driving speed information of the vehicle based on information detected from the first distance sensor and the second distance sensor. It can contain include possible commands.

As described above, certain aspects according to an embodiment of the present invention may also be implemented as computer readable code in a computer readable recording medium. A computer-readable recording medium is any data storage device capable of storing data that can be read by a computer system. Examples of the computer-readable recording medium include read-only memory (ROM), random-access memory (RAM), CD-ROMs, magnetic tapes, and , floppy disks, and optical data storage devices. The computer-readable recording medium may also be distributed over network-connected computer systems so that the computer-readable code is stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for achieving the present invention can be easily interpreted by programmers skilled in the field to which the present invention is applied.

In addition, it will be appreciated that the apparatus and method according to an embodiment of the present invention can be realized in the form of hardware, software, or a combination of hardware and software. Any such software, for example, whether erasable or rewritable, may contain a volatile or non-volatile storage device, such as a ROM, or a memory, such as, for example, RAM, a memory chip, device or integrated circuit. , or an optically or magnetically writable and machine-readable storage medium, such as a CD, DVD, magnetic disk or magnetic tape, for example. The method according to an embodiment of the present invention may be implemented by a computer or portable terminal including a controller and a memory, wherein the memory is suitable for storing a program or programs including instructions for implementing embodiments of the present invention You will see that it is an example of a machine-readable storage medium.

Accordingly, the present invention includes a program including code for implementing the apparatus (system) or method described in any claim of the present specification, and a machine (computer, etc.) readable storage medium storing such a program. Further, such a program may be transmitted electronically over any medium, such as a communication signal transmitted over a wired or wireless connection, and the present invention suitably includes the equivalent thereof.

Also, the device according to an embodiment of the present invention may receive and store the program from a program providing device connected by wire or wirelessly. The program providing device may include a program including instructions for the program processing device to perform a preset content protection method, a memory for storing information necessary for the content protection method, and wired or wireless communication with the graphic processing device. It may include a communication unit for performing the execution, and a control unit for automatically transmitting a corresponding program to the transceiver at a request of the graphic processing device or automatically.

While this specification contains numerous specific implementation details, they should not be construed as limitations on the scope of any invention or claim, but rather as descriptions of features that may be specific to particular embodiments of particular inventions. should be understood Likewise, certain features that are described herein in the context of separate embodiments may be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment may also be implemented in multiple embodiments, either individually or in any suitable subcombination. Furthermore, although features operate in a particular combination and may be initially depicted as claimed as such, one or more features from a claimed combination may in some cases be excluded from the combination, the claimed combination being a sub-combination. or a variant of a sub-combination.

Also, although operations are depicted in the drawings in a specific order, it is not to be understood that such operations must be performed in the specific order or sequential order shown or that all illustrated operations must be performed in order to obtain a desirable result. Can not be done. In certain cases, one or multiple devices may be transferred at the same time.

As such, this specification is not intended to limit the invention to the specific terminology presented. Accordingly, although the present invention has been described in detail with reference to the above-described examples, those skilled in the art can make modifications, changes, and modifications to the examples without departing from the scope of the present invention. The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

Claims (9)

A system for collecting traffic information of vehicles passing on a road including one or more lanes,
a first distance sensor;
a second distance sensor; and
a control module for calculating traffic information of the vehicle based on information detected by the first distance sensor and the second distance sensor;
the first distance sensor and the second distance sensor,
They are spaced apart from each other by a predetermined distance and arranged side by side on one side of the road, and are offset by a predetermined distance from the ground to emit a laser beam in the direction of the lane, but detect the wheels of a passing vehicle
The control module is
calculating a traveling speed V of the vehicle based on the information detected by the first distance sensor and the second distance sensor,
The control module is
Calculate the distance (DA) between the first and second axles of the vehicle by [Equation 1] below,
[Equation 1]
DA = V * S2
(Where V is the driving speed of the vehicle, and S2 is the absolute value of the difference between the first axle detection time and the second axle detection time measured by the first distance sensor, or the first axle detection time and the second axle detection time measured by the second distance sensor It is the absolute value of the difference between the two axle detection points),
The control module is
When the value of DA is shorter than the distance between the first axle and the second axle of the light vehicle, the vehicle is determined as a vehicle with three or more axles,
The control module is
and statistically determining a lane width of a traveling vehicle based on distance information detected by the first distance sensor and the second distance sensor. According to claim 1,
The control module is
A traffic information collection system that calculates the driving speed V of the vehicle based on the following [Equation 2]
[Equation 2]
V = D/S1
(Where D is the distance difference between the first distance sensor and the second distance sensor, and S1 is the absolute value of the difference between the detection timing of the first distance sensor and the detection timing of the second distance sensor for a specific wheel of the vehicle) . delete delete In the driving method of a system for collecting traffic information of a vehicle passing on a road including one or more lanes,
The wheels of a passing vehicle are detected by using a first distance sensor and a second distance sensor that are spaced apart from each other by a predetermined distance and arranged side by side on one side of the road, and are offset from the ground by a predetermined distance and emit a laser beam in the direction of the lane to do;
calculating a traveling speed V of the vehicle based on information detected by the first distance sensor and the second distance sensor; and
Comprising the step of calculating the distance (DA) between the first axle and the second axle of the vehicle by the following [Equation 3],
[Equation 3]
DA = V * S2
(Where V is the driving speed of the vehicle, S2 is the absolute value of the difference between the detection time of the first axle and the detection time of the second axle measured by the first distance sensor, or the first axle detection time and the second time measured by the second distance sensor It is the absolute value of the difference in axle detection time),
When the value of DA is shorter than the distance between the first axle and the second axle of the light vehicle, the vehicle is determined to be a vehicle with three or more axles,
The driving method of the traffic information collecting system, wherein the lane width of the driving vehicle is statistically determined based on the distance information detected by the first distance sensor and the second distance sensor. 6. The method of claim 5,
Calculating the driving speed V of the vehicle comprises:
A driving method of a traffic information collection system, comprising the step of calculating the driving speed of the vehicle based on the following [Equation 4]
[Equation 4]
V = D/S1
(Where D is the distance difference between the first distance sensor and the second distance sensor, and S1 is the absolute value of the difference between the detection timing of the first distance sensor and the detection timing of the second distance sensor for a specific wheel of the vehicle) . delete delete In a computer-readable recording medium recording a program for performing a driving method of a system for collecting traffic information of a vehicle passing on a road including one or more lanes on a computer,
When the program is executed by a processor, the processor
A wheel of a passing vehicle is detected by using a first distance sensor and a second distance sensor that are spaced apart from each other by a predetermined distance and arranged side by side on one side of the road, and are offset from the ground by a predetermined distance and emit a laser beam in the direction of the road and an executable instruction to perform an operation of calculating the driving speed V of the vehicle based on information detected from the first distance sensor and the second distance sensor,
The distance (DA) between the first and second axles of the vehicle is calculated by [Equation 5] below,
[Equation 5]
DA = V * S2
(Where V is the driving speed of the vehicle, S2 is the absolute value of the difference between the detection time of the first axle and the detection time of the second axle measured by the first distance sensor, or the first axle detection time and the second time measured by the second distance sensor It is the absolute value of the difference of the axle detection time)
When the value of DA is shorter than the distance between the first axle and the second axle of the light vehicle, the vehicle is determined to be a vehicle with three or more axles,
and a lane width of the traveling vehicle is statistically determined based on distance information detected by the first distance sensor and the second distance sensor.

Images