KR102228825B1 - Portable traffic measurement device and system for predicting traffic conditions - Google Patents

Abstract

Embodiments of the present invention relate to a mobile traffic measurement device and a traffic condition prediction system, including a radar sensor, a wireless communication module, a power supply, etc. By providing the measuring device, it is possible to provide a portable measuring device that is easy to install and move. In addition, by setting the setting information of the radar sensor through wireless communication after the installation of the mobile traffic measurement device, it is possible to prevent a decrease in the detection performance of the radar sensor due to the installation environment of the mobile traffic measurement device or change of the installation state after installation.

Description

PORTABLE TRAFFIC MEASUREMENT DEVICE AND SYSTEM FOR PREDICTING TRAFFIC CONDITIONS}

Embodiments of the present invention relate to a mobile traffic measurement device and a traffic condition prediction system.

The radar sensor transmits a radar signal to the outside through a transmitting antenna, and receives the radar signal reflected by the radar signal to detect the object, and the object is detected and the distance, speed, and angle from the detected object. Etc. can be measured. As such radar sensors provide high-accuracy detection performance, they are used in various fields requiring object detection.

As an example, the radar sensor may be installed on or around a road on which the vehicle is traveling, and may be used to detect a vehicle traveling on the road and to analyze and predict a traffic volume. In addition, radar sensors may be used in various control systems that require detection of moving objects.

When such a radar sensor is used to detect and regulate a vehicle traveling on a road, it must be installed on the road, but there are many difficulties when installing it due to a vehicle traveling on the road, or the like. In addition, accurate installation may not be performed due to external factors, and in this case, there is a problem in that the accuracy of detection data by the radar sensor may be deteriorated.

It is an object of the embodiments of the present invention to provide a mobile traffic volume measurement device that detects a vehicle traveling on a road and is easy to install and move, and a traffic condition prediction system using the same.

An object of the embodiments of the present invention is to provide a method for easily setting setting information of a mobile traffic measurement device and preventing degradation of detection performance due to an installation location or surrounding environment of the mobile traffic measurement device.

In one aspect, embodiments of the present invention, transmit a radar signal to the outside, receive a radar signal reflected from the radar signal to the object, generate sensing data based on the radar reflected signal, and control commands received or input from the outside. Mobile traffic measurement device including a case including a radar sensor that sets setting information according to the setting information, a power supply that supplies power to the radar sensor, and a connection member that accommodates the radar sensor and the power supply and can be coupled and detached from an external structure Can provide.

In such a mobile traffic measurement apparatus, the radar sensor may set detection information including at least one of a detection line and a detection range according to a control command, and one or more detection lines may be set.

Here, the radar sensor performs detection on a detection area including a minimum detection area set based on the detection line, and the minimum detection area may be set in an area opposite to the area where the radar sensor is located based on the detection line. .

In addition, the front of the radar sensor may be directed to a point farther than the detection line.

In addition, when there are a plurality of detection lines, the radar sensor may generate detection data at a near detection line by using detection data at a distant detection line. For example, if a radar sensor cannot detect a target from a sensing line at a short distance due to the presence of a large vehicle, etc., using the sensing data acquired for the target from a sensing line at a distance, It can generate detection data for.

When an obstruction object is present in front of the radar sensor, at least one of the detection lines may be set based on an installation height of the radar sensor, an arrangement height of the obstruction object, and a distance between the radar sensor and the obstruction object.

In addition, the radar sensor can set lane information including one or more of the type of lane, the width of the lane, the number of lanes, and the driving direction according to the control command.If the number of lanes is plural, the lane width may be set for each lane. have.

In addition, the radar sensor may set installation information including one or more of an installation height, an installation position, a ground type, a horizontal angle, a driving direction, and a speed correction value according to a control command, and the front direction of the radar sensor on a plane is If it is located diagonally to the lane, the horizontal angle can be set to a value other than 0.

In addition, when the horizontal angle is set to a value other than 0, the radar sensor may generate correction detection data by applying a correction value to detection data generated based on the radar reflection signal.

In another aspect, embodiments of the present invention include the above-described mobile traffic volume measurement device, and a traffic situation analysis device that receives detection data from the mobile traffic volume measurement device and analyzes or predicts a traffic situation based on the received detection data. A traffic condition prediction system can be provided.

According to embodiments of the present invention, by providing a mobile traffic measurement device including a case that accommodates a radar sensor, a power supply, and a wireless communication module, and can be combined and separated with an external structure, installation and movement of the mobile traffic measurement device Make this easy to do.

According to embodiments of the present invention, it is possible to improve the detection performance of the mobile traffic volume measurement device regardless of the installation location or surrounding environment of the mobile traffic volume measurement device by easily setting the setting information of the mobile traffic volume measurement device through wireless communication. To be there.

1 is a diagram showing an example of a configuration of a traffic condition prediction system using a radar device according to embodiments of the present invention.
2 is a diagram showing an example of an environment to which a traffic condition prediction system according to embodiments of the present invention is applied.
3 is a diagram showing an example of an environment to which a mobile traffic measurement device according to embodiments of the present invention is applied.
4 is a view showing an example of the configuration of a mobile traffic volume measurement apparatus according to embodiments of the present invention.
5 is a diagram showing an example of a method of setting setting information after installation of a mobile traffic measurement device according to embodiments of the present invention.
6 is a diagram illustrating an example of a screen for setting lane information among setting information of a mobile traffic measurement apparatus according to embodiments of the present invention.
7 is a diagram illustrating an example of a screen for setting installation information among setting information of a mobile traffic measurement device according to embodiments of the present invention.
8 is a diagram illustrating an example of installation information according to an installation location of a mobile traffic measurement device according to embodiments of the present invention.
9 is a diagram illustrating an example of a screen for setting detection information among setting information of a mobile traffic measurement device according to embodiments of the present invention.
10 is a diagram illustrating an example of a detection area based on set detection information of a mobile traffic measurement device according to embodiments of the present invention.
11A and 11B are diagrams illustrating an example of a method of setting detection information of a mobile traffic volume measurement device according to embodiments of the present invention.
12A and 12B are diagrams showing another example of a method of setting detection information of a mobile traffic volume measuring apparatus according to embodiments of the present invention.
13 is a diagram illustrating an example of a relationship between set sensing information and a directing point of a mobile traffic volume measuring apparatus according to embodiments of the present invention.
14 is a diagram illustrating an example of generating sensing data according to set sensing information of a mobile traffic volume measuring apparatus according to embodiments of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to elements of each drawing, the same elements may have the same numerals as possible even if they are indicated on different drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, the detailed description may be omitted.

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

1 is a diagram showing an example of a configuration of a traffic condition prediction system 100 using a radar device 110 according to embodiments of the present invention.

Referring to FIG. 1, a traffic condition prediction system 100 according to embodiments of the present invention is a system for predicting future traffic conditions by monitoring current traffic conditions such as vehicle flow and traffic volume.

The traffic condition prediction system 100 according to the embodiments of the present invention may monitor the current traffic condition using a radar and predict the future traffic condition, unlike a conventional traffic condition monitoring and prediction technology.

In addition, the traffic condition prediction system 100 according to the embodiments of the present invention does not simply monitor the current traffic condition and predict the future traffic condition based on the vehicle flow or traffic volume, but the current climate information. This enables more accurate monitoring of current traffic conditions and more accurate predictions of future traffic conditions.

For example, if it rains or snows, there may be a traffic situation that increases the likelihood of congestion or traffic accidents occurring in the future.

Accordingly, it is possible to more accurately predict future traffic conditions by taking into account the current climate situation, in addition to the current vehicle flow or traffic volume that can be identified through vehicle detection, and additionally considering the identified climate situation.

The traffic condition prediction system 100 according to embodiments of the present invention may obtain climate information by indirectly inferring climate information using radar technology, rather than obtaining climate information from a dedicated device or a dedicated server for climate observation. .

Accordingly, the traffic condition prediction system 100 according to embodiments of the present invention may include a radar device 110 and a traffic condition analysis device 120.

The radar device 110 may be, for example, an FMCW radar, and may transmit a radar signal and receive a radar reflection signal from which the radar signal is reflected. In addition, it is possible to generate radar-based vehicle detection information and radar-based climate detection information by detecting surrounding vehicles and climate through the analysis of the radar reflection signal. In addition, radar-based traffic condition information including radar-based vehicle detection information and radar-based climate detection information may be provided.

The traffic situation analysis device 120 may analyze the radar-based traffic situation information provided by the radar device 110 to understand the current traffic situation and predict a future traffic situation, and generate and store traffic situation analysis data. .

2 is a diagram showing an example of an environment to which the traffic condition prediction system 100 according to embodiments of the present invention is applied.

Referring to FIG. 2, a radar device 110 included in the traffic condition prediction system 100 according to embodiments of the present invention may be installed at each location in which a traffic condition is to be monitored.

As an example, as shown in FIG. 2, the radar device 110 may be installed in the structure 200 around a road where a road signpost, a vehicle speed detection device, or a signal violation vehicle detection device may be installed. .

In addition, the traffic condition analysis device 120 may be located in a traffic control center.

The radar device 110 and the traffic condition analysis device 120 may transmit and receive information or data through a wired or wireless-based communication method.

The radar apparatus 110 according to embodiments of the present invention may transmit a radar signal and receive a radar reflection signal from which the radar signal is reflected.

The radar apparatus 110 may include a transmitting unit for transmitting a radar signal through a transmitting antenna and a receiving unit for receiving a radar reflection signal through a receiving antenna. In addition, in some cases, an analog front end for detecting a radar reflection signal in an analog form, and an analog-to-digital converter for converting an analog radar reflection signal into digital data may be included.

For example, the radar apparatus 110 may include a transmission circuit for transmitting a radar signal, a reception circuit for receiving a radar reflection signal, and a control circuit for controlling the transmission circuit and the reception circuit.

The transmission circuit may include, for example, a frequency modulator, a voltage controlled oscillator, and a transmission antenna. In addition, the receiving circuit may include, for example, a receiving antenna, a frequency mixer, a low-pass filter, and an analog-to-digital converter. Here, when the transmission circuit transmits the frequency modulated continuous wave signal through the transmission antenna, the voltage controlled oscillator included in the transmission circuit may output a signal corresponding to the frequency modulated continuous wave signal to the frequency mixer of the reception circuit.

The control circuit may control the transmission of a radar signal by the transmission circuit, and may generate sensing data based on the radar reflection signal received through the reception circuit.

Such a transmission circuit, a reception circuit, and a control circuit may constitute one radar sensor in the radar device 110. In this case, the radar device 110 may separately include a controller that controls the radar sensor.

That is, the radar device 110 may be controlled by at least one of a control circuit constituting a radar sensor or a controller separately included from the radar sensor. In addition, at least one of the control circuit or the controller may control the transmission and reception of data with the traffic condition analysis apparatus 120, and may be controlled according to a command received from the traffic condition analysis apparatus 120.

In addition, the radar device 110 may further include a pan-tilt motor or the like for adjusting the orientation angle of the radar sensor, depending on the case.

The radar device 110 may detect nearby vehicles based on a radar reflection signal and generate radar-based vehicle detection data. In addition, the generated vehicle detection data may be transmitted to the traffic condition analysis device 120.

Accordingly, the traffic condition analysis apparatus 120 may analyze a traffic condition based on vehicle detection data received from the radar apparatus 110 and predict a future traffic condition.

As in the above example, the radar device 110 may be installed on a road on which the vehicle is traveling to perform vehicle detection, but in this case, it may not be easy to install the radar device 110. In addition, after the installation of the radar device 110, the installation angle of the radar device 110 may be changed due to external factors, and in this case, the detection performance of the radar device 100 may be deteriorated.

The embodiments of the present invention provide a radar device 110 in the form of a mobile device and a method for easily setting the setting information of the radar device 110, so that the installation of the radar device 110 is easy to move. And it is possible to prevent the detection performance of the radar device 110 from being deteriorated.

Embodiments of the present invention provide a mobile integrated battery charging type traffic measurement device using a radar device 110 and a data storage and transmission method using wireless communication.

Embodiments of the present invention solve the problems of the existing traffic measurement system and consider the convenience of installation, so that the vehicle detection radar, portable rechargeable battery, and wireless communication wifi terminal are manufactured in an integrated housing and a detachable docking station type Consists of. And, it relates to a mobile traffic volume measurement system and device that can be installed on a road structure to continuously extract the movement trace of the vehicle, and in detail, while improving the problem of the road buried vehicle detection sensor widely used for traffic. It is a radar-based system that can increase the efficiency of operation as a system that can transmit data through wifi communication method without cables without any restrictions on installation by supplying power through battery charging without additional electricity supplied by battery charging method. It relates to a mobile traffic measurement system device.

Currently, the traffic volume measurement system on the road includes a method of manually counting the number of vehicles through a counter at the site, and a method of measuring traffic by installing separate fixed equipment such as a roof sensor, an image camera, and a geomagnetic sensor on the post. have. Information collected through humans can only count the number of vehicles, and it is used for road operation and traffic policy establishment by identifying the number and speed of vehicles through sensors. However, the system for measuring traffic volume by installing a sensor has the following problems.

For example, a traffic volume survey on roads at home and abroad is essential information for establishing a budget input plan such as road expansion. There is a point where a traffic detector is installed at all times to investigate the traffic volume of such a road, but it is practically difficult to install it at all points due to a lack of budget. Accordingly, most countries at home and abroad conduct surveys by outsourcing traffic volume surveys.

At this time, in the case of Korea, handwritten surveys through manpower dominate the majority, and some areas are surveyed using a geomagnetic sensor installed on the road floor.

Specifically, in the case of manpower survey, there is a problem of poor objectivity of survey information and high labor costs when surveying multiple points, and the method using a geomagnetic sensor is a method of installing on the road floor for each lane. 1) When installing, there is a risk of accidents. It is high, 2) it is difficult to install if there is water, and 3) theft can occur frequently.

The mobile traffic measurement system and apparatus according to embodiments of the present invention may provide the following advantages.

-Detecting single lanes with one device → Detecting multiple lanes with one device

-When measuring traffic volume, management personnel are required → Unmanned measurement system

-Self-supply and demand for 2~3 days → Low power system

-Increased convenience of installation and data analysis → A system that can install and set equipment with short training for non-professional personnel

Therefore, it is possible to save time and manpower costs.

Specifically, a mobile traffic measurement system using a multi-lane detection radar provides the following advantages.

-One device detects more than 4 lanes

-Simple installation within 30 minutes by yourself

-Unmanned traffic can be measured for up to 3 days with its own battery

3 is a diagram showing an example of an environment to which a mobile traffic volume measurement device 300, which is a radar device 110 in the form of a mobile device according to embodiments of the present invention, is applied.

Referring to FIG. 3, the mobile traffic volume measurement apparatus 300 according to embodiments of the present invention may be installed, for example, on a structure 200 disposed outside a road on which a vehicle travels. In addition, the mobile traffic measurement device 300 may include a radar sensor 310, a wireless communication module 320, and a power supply unit 330.

Since the mobile traffic measurement device 300 is installed on the structure 200 disposed on the outside of the road, it can be easily installed even in a situation in which a vehicle is running on the road.

Of course, in some cases, the mobile traffic measurement device 300 may be installed on the structure 200 located on the road.

The mobile traffic volume measurement device 300 may include a radar sensor 310 to detect a vehicle traveling on a road and generate sensing data. In addition, by transmitting the sensing data to the outside through the wireless communication module 320, it is possible to analyze the traffic condition based on the sensing data.

In addition, the mobile traffic measurement device 300 may set setting information of the radar sensor 310 according to a control command received from the outside through the wireless communication module 320. Therefore, after the installation of the mobile traffic volume measurement device 300, by easily setting the setting information of the radar sensor 310, it is possible to improve the detection performance of the mobile traffic volume measurement device 300.

The mobile traffic measurement device 300 may include a power supply unit 330 that supplies power to a radar sensor 310 and a wireless communication module 320. The power supply unit 330 may be in the form of a battery that is rechargeable and detachable from the mobile traffic measurement device 300. Accordingly, the mobile traffic volume measurement device 300 may perform vehicle detection at the installation point for a certain period of time, and may perform vehicle detection by moving the equipment to a required point.

The mobile traffic measurement device 300 may further include a circuit for controlling the radar sensor 310 or an external terminal. In addition, the radar sensor 310 may be accommodated and may further include a configuration capable of being connected to the external structure 200.

4 is a view showing an example of the configuration of a mobile traffic volume measurement device 300 according to embodiments of the present invention.

Referring to FIG. 4, the mobile traffic measurement device 300 includes a radar sensor 310, a wireless communication module 320, a power supply unit 330, a power supply control circuit 340, a DC-DC converter 350, and the like. It may include.

The radar sensor 310 may include a transmission antenna and a reception antenna, transmit a radar signal to the outside, and receive a radar reflection signal in which the radar signal is reflected on an object. The radar sensor 310 may be controlled by a control circuit disposed inside the radar sensor 310.

The wireless communication module 320 may transmit data sensed by the radar sensor 310 to the outside or receive a control command transmitted from the outside.

The power supply unit 330 may supply power to the radar sensor 310 and the wireless communication module 320, and for example, may supply power to the radar sensor 310 or the like through the power software 380.

The power supply control circuit 340 may control the supply of power to the radar sensor 310 and the wireless communication module 320.

The DC-DC converter 350 may adjust (eg, 12V→5V) a voltage level received from the power supply control circuit 340 and supply it to the wireless communication module 320. This DC-DC converter 350 is an example of a circuit required for driving the mobile traffic measurement device 300, and in some cases, the DC-DC converter 350 may not be included, or other circuits It may be included more.

The mobile traffic measurement device 300 may include, for example, a monitoring terminal 360 or a charging terminal 370 as an external terminal. These external terminals may be included more or less, if necessary.

The mobile traffic measurement device 300 may include a camera module in some cases, and in this case, the camera module may be arranged to face the same point or area as the radar sensor 310.

In addition, the mobile traffic volume measurement device 300 may further include a configuration for connecting to the external structure 200.

5 is a view showing an example of a method of setting setting information of the mobile traffic volume measurement device 300 after the mobile traffic volume measurement device 300 according to embodiments of the present invention is installed on the external structure 200.

Referring to FIG. 5, the mobile traffic measurement device 300 includes a case 390 for accommodating a radar sensor 310, a wireless communication module 320, a power supply unit 330, and a power supply control circuit 340. Can include.

The case 390 may include a body 391 for accommodating the radar sensor 310 and the like, and a connection member 392 capable of being coupled and separated from the external structure 200.

Accordingly, the mobile traffic measurement device 300 can be easily coupled and separated from the structure 200 located around the road by the connection member 392 included in the case 390.

Further, as the mobile traffic measurement device 300 includes the wireless communication module 320, setting information required for driving the mobile traffic measurement device 300 may be set while being installed in the structure 200.

As an example, the control system 400 transmits and receives data with the mobile traffic measurement device 300 through wireless communication, sets setting information of the mobile traffic volume measurement device 300, and is detected by the mobile traffic volume measurement device 300. Data can be collected and analyzed. The control system 400 may collect data detected by the mobile traffic volume measurement device 300 in real time, or in some cases, collect detection data that is detected and stored by the mobile traffic volume measurement device 300 for a certain period of time. May be. The control system 400 may be the aforementioned traffic situation analysis device 120 or a system separate from the traffic situation analysis device 120. In addition, the control system 400 may be a computer in the form of a notebook or desktop, or may be one of portable electronic devices such as a smart phone or a tablet.

The mobile traffic measurement device 300 may set setting information of the radar sensor 310 according to a control command received from the control system 400. For example, a control circuit included in the radar sensor 310 may set setting information of the radar sensor 310 according to a control command.

Such setting information may include information on a lane to be detected by the radar sensor 310, information on a location or place where the radar sensor 310 is installed, information on a detection area by the radar sensor 310, and the like. I can.

After the mobile traffic volume measurement device 300 is installed, by setting the setting information of the radar sensor 310 through wireless communication, the mobile traffic volume measurement device even when the installation location and location are changed like the mobile traffic volume measurement device 300 It is possible to prevent deterioration of the detection performance of (300).

In addition, by receiving the data sensed by the mobile traffic volume measurement device 300 from the outside and grasping the vehicle flow, vehicle detection, enforcement, and traffic volume identification through the mobile traffic volume measurement device 300 can be easily performed. .

6 is a diagram illustrating an example of a screen for setting lane information among setting information of the mobile traffic measurement apparatus 300 according to embodiments of the present invention.

Referring to FIG. 6, the radar sensor 310 included in the mobile traffic measurement device 300 may set information about a lane to be detected by the radar sensor 310 according to a control command received or input from the outside. have. Such lane information may include, for example, a lane activation, a lane type, a driving direction, an actual lane number, a width of each lane, and a lane position.

Lane activation is information that determines whether to perform detection of a lane to be detected by the radar sensor 310, and the radar sensor 310, for example, detects only lanes in which lane activation is checked as Enable. Data can be created.

The type of lane is information for setting the type of the corresponding lane, and the driving direction is information for setting up or down. For example, when a vehicle traveling by the radar sensor 310 is detected, it may be set to “downward”.

The actual lane number is a lane number of an actual road to be detected, and may be input without overlapping each lane.

The width of each lane may be automatically set according to the lane width value, and when there are multiple lanes, the width of each lane may be set for each lane.

The lane position is information for setting the start position of each lane.

In this way, by setting information on the lane to be detected and each lane in the lane corresponding to the detection range of the radar sensor 310, the relationship between the vehicle and the lane detected by the radar sensor 310 can be accurately identified. can do.

In addition, by setting information on the location and location where the mobile traffic volume measurement device 300 is installed, the detection performance of the radar sensor 310 included in the mobile traffic volume measurement device 300 may be improved.

7 is a diagram illustrating an example of a screen for setting installation information among setting information of the mobile traffic measurement apparatus 300 according to embodiments of the present invention.

Referring to FIG. 7, the radar sensor 310 may set installation information about a location or place in which the mobile traffic measurement device 300 is installed according to a control command received or input from the outside. Such installation information may include an installation height, an installation position, a ground shape, a horizontal angle, a driving direction, and a speed correction value.

The installation height means the height from the ground to the central part of the radar sensor 310, and the installation location means the location where the radar sensor 310 is installed based on the lane to be detected by the radar sensor 310.

The ground shape is information indicating a ground shape such as flat ground, uphill, downhill, etc., and by adjusting the orientation angle of the radar sensor 310 or correcting the detection data of the radar sensor 310 according to the ground shape, the radar sensor 310 ) Can be prevented from deteriorating.

The horizontal angle is information for setting the left and right angles of the radar sensor 310. In particular, when the mobile traffic measurement device 300 is installed on the outside of the road, the horizontal angle is set to a value other than 0, and the radar sensor The data sensed by 310 can be corrected to obtain an accurate measurement value.

As an example, FIG. 8 shows an example of a horizontal angle setting value according to an installation position of the mobile traffic measurement device 300. As illustrated in FIG. 8, when the radar sensor 310 is installed in the center of a lane to be detected, the horizontal angle may be set to 0.

And, when the radar sensor 310 is installed on the left side of the lane to be detected, the horizontal angle is set to a (+) value, and when the radar sensor 310 is installed on the right side of the lane to be detected, the horizontal angle is (- ) Can be set. That is, when the front of the radar sensor 310 is arranged diagonally with respect to the lane to be detected, the horizontal angle may be set to a value other than 0.

When the horizontal angle of the radar sensor 310 is set to a value other than 0, the radar sensor 310 may generate correction detection data by applying a correction value to the data detected by the radar sensor 310.

Accordingly, even when a vehicle moving to the side or diagonally instead of the front of the radar sensor 310 is detected, it is possible to accurately obtain a measured value related to the detected vehicle speed.

The driving direction is set as going up or down, and the speed correction value is information set to correct the overall speed of the detected vehicle. For example, if you want to increase the speed of the vehicle approaching by the radar sensor 310 as a whole, the speed correction value is set to a (-) value, and when you want to decrease the speed of the vehicle approaching by the radar sensor 310 as a whole, the speed The correction value may be set as a (+) value.

In this way, it is possible to increase the accuracy of the detection data of the radar sensor 310 by setting installation information regarding the installation location, installation location, and installation direction of the mobile traffic measurement device 300, and in particular, the mobile traffic measurement device 300 Even if) is installed outside the road, the accuracy of the radar sensor 310 may be improved.

9 is a view showing an example of a screen for setting detection information among the setting information of the mobile traffic volume measurement apparatus 300 according to embodiments of the present invention.

Referring to FIG. 9, the radar sensor 310 may set detection information on an area to be detected by the radar sensor 310 according to a control command received or input from the outside. Such sensing information may include a sensing line and a sensing range.

Here, one or more detection lines may be set, and as an example, up to five detection lines may be set, but the present invention is not limited thereto. That is, depending on the case, by setting only one detection line, the detection performance for a corresponding area may be increased, or by setting several detection lines, the detection area may be widened.

The sensing range may include an X-axis sensing range, a Y-axis sensing range, and a sensing speed range. For example, the X-axis detection range may be set to the left end and the right end of the lane to be detected, and the Y-axis detection range may be set in the Y-axis direction, that is, the detection range in the driving direction of the vehicle. In addition, the detection speed range is a speed range to be detected, and the down line may be set to (-) and the up line may be set to (+).

In this way, by setting the detection information after the mobile traffic measurement device 300 is installed, it is possible to set a required detection range or an optimum detection range in the state in which the radar sensor 310 is installed.

10 is a diagram illustrating an example of a detection area based on set detection information of the mobile traffic volume measurement apparatus 300 according to embodiments of the present invention.

Referring to FIG. 10, when a detection line is set in the detection information of the radar sensor 310, a minimum detection area may be set based on the detection line.

This minimum detection area may be set to a certain size (eg, AXB) based on the detection line. In addition, the minimum detection area may be set in an area opposite to the area in which the radar sensor 310 is located based on the detection line.

The minimum detection area means the minimum area required to form a track according to the movement of the vehicle through the data sensed by the radar sensor 310, and may mean the minimum area for securing the detected vehicle speed. have.

Therefore, for the detection performance of the radar sensor 310, the minimum detection area should not be covered by the field of view of the radar sensor 310, and the minimum detection area may be an area included in the detection area of the radar sensor 310.

Therefore, the detection line needs to be set in consideration of the field of view of the radar sensor 310.

11A and 11B are diagrams showing an example of a method of setting detection information of the mobile traffic volume measuring apparatus 300 according to embodiments of the present invention.

Referring to FIG. 11A, when an obstruction object exists in front of the radar sensor 310, a shadow area of the radar sensor 310 may exist due to the obstruction object. In this case, since the minimum detection area must be included in the detection area of the radar sensor 310, the detection line may be set so that the minimum detection area is set in an area other than the shaded area of the radar sensor 310.

In addition, as shown in the example shown in FIG. 11B, when an obstruction object is disposed adjacent to the radar sensor 310 under the radar sensor 310, a shaded area by the obstruction object is formed adjacent to the radar sensor 310 Can be.

In this case, by setting the detection line of the radar sensor 310 in an area other than the shaded area, the minimum detection area of the radar sensor 310 is included in the detection area of the radar sensor 310 to detect the radar sensor 310 It can prevent performance degradation.

On the other hand, when a shadowed area by the obstructed object exists, the detection line of the radar sensor 310 may be set based on the installation height of the mobile traffic measurement device 300 or the arrangement height of the obstruction object.

12A and 12B are diagrams showing another example of a method of setting detection information of the mobile traffic volume measuring apparatus 300 according to embodiments of the present invention.

Referring to FIG. 12A, a shadow area of the radar sensor 310 may be formed due to the obstruction object disposed in front of the mobile traffic measurement device 300. In addition, when the minimum detection area of the radar sensor 310 is included in the shaded area, the detection performance of the radar sensor 310 may be deteriorated.

In this case, a detectable distance may be calculated based on the installation height of the radar sensor 310, the height of the obstruction object, and the distance between the radar sensor 310 and the obstruction object, and a detection line may be set.

As an example, as illustrated in FIG. 12B, when the installation height of the radar sensor 310 is 6.5 m, the placement height of the obstruction object is 5.5 m, and the distance between the radar sensor 310 and the obstruction object is 7 m , The distance to the first shaded area can be calculated as follows.

Here, when the distance required for the minimum detection area is 10m, the detection line should be set at a point within 45.5-10=35.5(m), which is the point subtracting the distance required for the minimum detection area from the initial shaded area. I can.

Therefore, even when a shaded area of the radar sensor 310 exists due to an obstruction object, by setting the detection line of the radar sensor 310 according to the position of the obstruction object, the minimum detection area is in the field of view of the radar sensor 310 By being included, the detection performance of the radar sensor 310 may be maintained.

In addition, the radar sensor 310 may be arranged to point to a point farther than a set detection line in order to improve detection performance.

That is, as illustrated in FIG. 13, when the detection line of the radar sensor 310 included in the mobile traffic measurement device 300 is set, the point where the front of the radar sensor 310 is directed is rearward than the set detection line. Can be located. That is, a point farther from the radar sensor 310 based on the detection line may be the directing point of the radar sensor 310.

In this way, by making the directing point of the radar sensor 310 toward the rear of the detection line, the detection performance of the radar sensor 310 may be improved in the minimum detection area.

On the other hand, such a mobile traffic volume measurement device 300 can increase the detection performance of the radar sensor 310 by setting a lane to be detected, an installed place or location, a detection line, etc., but other vehicles running on the road ( Yes, there may be a case in which vehicle detection is not accurately performed due to a large vehicle).

In particular, in the case of the mobile traffic volume measurement device 300, it may be installed at a somewhat not high point for convenience of movement and installation, and in this case, a specific vehicle may not be detected or accurate sensing data may not be generated depending on the road conditions. .

In preparation for the case in which detection data is not accurately generated according to the road conditions as described above, the mobile traffic volume measurement apparatus 300 according to embodiments of the present invention sets a plurality of detection lines and sets a plurality of detection lines when setting detection information. It is possible to generate detection data from another detection line based on the detection data acquired from one of the detection lines.

14 is a diagram illustrating an example of generating sensing data according to set sensing information of the mobile traffic volume measuring apparatus 300 according to embodiments of the present invention.

Referring to FIG. 14, the radar sensor 310 included in the mobile traffic measurement device 300 may set detection information of the radar sensor 310 according to a control command received or input from the outside, and in some cases, More than one detection line can be set.

For example, when two detection lines are set, the radar sensor 310 generates first detection data for the vehicle detected by the first detection line, and second detection data for the vehicle detected by the second detection line. Can be created.

In this case, when a large vehicle (eg, a truck) is running in front of a driving vehicle (eg, a passenger car), a case in which a vehicle running from the rear is not detected by the large vehicle may occur.

In this case, by performing detection by setting a plurality of detection lines, detection data for a vehicle that is not detected by a specific detection line may be generated.

For example, a vehicle may be detected by a first detection line to generate first detection data, and a corresponding vehicle may not be detected by a second detection line. In this case, by generating the second detection data in the second detection line based on the first detection data generated by the first detection line, the second detection line for vehicles that are not secured in the field of view of the radar sensor 310 Make it possible to generate sensing data.

In addition, in some cases, by generating the first detection data on the first detection line based on the second detection data on the second detection line, a track according to a result of detecting a corresponding vehicle may be generated.

In addition, the detection lines may be set to 3, 4, 5, etc. according to the setting of the detection information. In this case, as an example, when detection data for a specific vehicle is generated from two or more of the N detection lines, the detection of the specific vehicle is based on the detection data from the other detection lines, even if detection is not performed on the other detection lines. Sensing data can be generated. Alternatively, in some cases, when detection data for a specific vehicle is generated from (N-1) detection lines, detection data on the remaining detection lines for which detection is not performed may be generated.

Therefore, by increasing the number of detection lines set for detection of the radar sensor 310, even when the field of view of the radar sensor 310 is not secured temporarily, the vehicle running in the detection area of the radar sensor 310 is Make it possible to generate sensing data.

In this way, depending on the location where the mobile traffic measurement device 300 is installed, when there is an obstruction object in front, the detection line is set in consideration of the obstruction object, or by setting a plurality of detection lines, the detection area of the radar sensor 310 To improve the detection performance.

According to the embodiments of the present invention described above, a connection member 392 that includes a radar sensor 310, a wireless communication module 320, a power supply unit 330, and the like, accommodates them, and allows the structure 200 to be coupled and detached. By providing a mobile traffic measurement device 300 including a case 390 including ), it is possible to provide a mobile equipment that is easy to install and move.

In addition, by setting the setting information of the radar sensor 310 included in the mobile traffic measurement device 300 through wireless communication, detection of the radar sensor 310 through the setting after the installation of the mobile traffic measurement device 300 Allows you to improve performance. In addition, even when the installation angle, etc. is changed due to external factors after the installation of the mobile traffic measurement device 300, the detection performance of the radar sensor 310 can be maintained by easily resetting the setting information of the radar sensor 310. To be there.

In addition, by setting one or more detection lines in consideration of the installation environment of the mobile traffic measurement device 300, it is possible to increase the accuracy of the detection data of the radar sensor 310 in the minimum detection area set by the detection line. To be there.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. In addition, since the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are intended to describe the technical idea, the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: traffic condition prediction system 110: radar device
120: traffic condition analysis device 200: structure
300: mobile traffic measurement device 310: radar sensor
320: wireless communication module 330: power supply
340: power supply control circuit 350: DC-DC converter
360: monitoring terminal 370: charging terminal
380: power software 390: case
391: main body 392: connecting member
400: control system

Claims (11)

Transmits a radar signal to the outside, receives a radar signal reflected from the radar signal on an object, generates sensing data based on the radar signal, and sets setting information according to a control command received or input from the outside Radar sensor;
A power supply for supplying power to the radar sensor; And
Includes a case including a connection member that accommodates the radar sensor and the power supply, and can be coupled to and detached from an external structure,
The radar sensor,
Set detection information including at least one of a detection line and a detection range according to the control command,
One or more detection lines can be set,
When an obstruction object exists in front of the radar sensor, at least one of the detection lines is a movable type set based on the installation height of the radar sensor, the arrangement height of the obstruction object, and the distance between the radar sensor and the obstruction object. Traffic measurement device.
delete The method of claim 1,
The radar sensor,
A mobile traffic measurement device configured to detect a detection area including a minimum detection area set based on the detection line, and the minimum detection area is set in an area opposite to the area in which the radar sensor is located based on the detection line .
The method of claim 1,
A mobile traffic measurement device in which the front of the radar sensor is directed toward a point farther than the detection line.
The method of claim 1,
The radar sensor,
When there are a plurality of detection lines, a mobile traffic volume measurement device that generates detection data from a detection line at a short distance by using detection data from a detection line at a distance.
delete The method of claim 1,
The radar sensor,
According to the control command, lane information including at least one of lane activation, lane type, lane width, number of lanes, and driving direction is set, and when the number of lanes is plural, the lane width is a mobile traffic volume that can be set for each lane Measuring device.
The method of claim 1,
The radar sensor,
According to the control command, installation information including one or more of installation height, installation position, ground type, horizontal angle, driving direction, and speed correction value is set, and the front direction of the radar sensor on a plane is oblique to the lane. When positioned, the horizontal angle is set to a value other than zero.
The method of claim 8,
The radar sensor,
When the horizontal angle is set to a value other than 0, the mobile traffic volume measurement device generates correction detection data by applying a correction value to the detection data generated based on the radar reflection signal.
The method of claim 1,
The radar sensor,
A mobile traffic measurement device for receiving the control command through at least one of wired communication and wireless communication, and transmitting the sensing data to the outside.
Mobile traffic measurement devices; And
A traffic situation analysis device for receiving detection data from the mobile traffic measurement device and analyzing or predicting a traffic situation based on the received detection data,
The mobile traffic measurement device,
It transmits a radar signal to the outside, receives a radar reflection signal in which the radar signal is reflected on an object, generates the detection data based on the radar reflection signal, and provides setting information according to a control command received or input from the outside. Radar sensor to set;
A power supply for supplying power to the radar sensor; And
Includes a case including a connection member that accommodates the radar sensor and the power supply unit, and is capable of being coupled to and detached from an external structure,
The radar sensor,
Set detection information including at least one of a detection line and a detection range according to the control command,
One or more detection lines can be set,
When an obstruction object exists in front of the radar sensor, at least one of the detection lines is a traffic set based on an installation height of the radar sensor, an arrangement height of the obstruction object, and a distance between the radar sensor and the obstruction object. Situation prediction system.

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