KR101751277B1 - System for determining type of vehicle using treadle - Google Patents

System for determining type of vehicle using treadle Download PDF

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Publication number
KR101751277B1
KR101751277B1 KR1020150103934A KR20150103934A KR101751277B1 KR 101751277 B1 KR101751277 B1 KR 101751277B1 KR 1020150103934 A KR1020150103934 A KR 1020150103934A KR 20150103934 A KR20150103934 A KR 20150103934A KR 101751277 B1 KR101751277 B1 KR 101751277B1
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South Korea
Prior art keywords
vehicle
switches
information
unit
voltage
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KR1020150103934A
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Korean (ko)
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KR20170011381A (en
Inventor
신수만
조용천
이용찬
김현진
김재현
김동철
이경수
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주식회사 스마트비전
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/02—Detecting movement of traffic to be counted or controlled using treadles built into the road
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)

Abstract

The present invention proposes a vehicle type determination system that calculates a number of axles, a width, a radius, etc. using switches constituting the trains and determines the vehicle type based on the calculated results. A system according to the present invention includes: a vehicle sensing unit for sensing an entering vehicle; A push counting unit counting the number of times that the switches mounted on the trays are pushed by the vehicle for a first predetermined time when the vehicle is sensed; A switch information acquisition unit for acquiring information about switches that are pushed by the vehicle when the vehicle is sensed; And a vehicle type determination unit for determining the vehicle type based on the number of times the switches are pushed or the information about the switches.

Description

[0001] The present invention relates to a system for determining a vehicle using tires,

The present invention relates to a system for determining a vehicle type. More particularly, the present invention relates to a system for determining a vehicle type by calculating a number of axles, a width, a radius, and the like.

In order to judge the type of vehicle, it is necessary to detect the vehicle to communicate. In this case, a geomagnetic sensor is widely used. In the case of a geomagnetic sensor for sensing a vehicle buried in a road, the detection range of the magnetic field of the geomagnetism sensor Sensing the change value of the magnetic field caused by the vehicle, and sensing the change in the magnetic field sensed within the sensing range of the magnetic field even after the vehicle has passed the position where the geomagnetic sensor is embedded.

However, since the vehicle senses a part of the change of the magnetic field caused by the vehicle even before the vehicle reaches the position where the geomagnetic sensor is buried or in the past, there is a problem that a certain error range occurs in the valid data there was.

In addition, due to such an error range, it is unclear when and when the vehicle has started to pass the geographical position of the geomagnetism sensor, and precise valid data extraction for the occupancy time passing through the geomagnetism sensor is limited .

Korean Patent Publication No. 2008-0111317 proposes a device for recognizing a vehicle type. However, the above-described problem can not be solved because the device recognizes the vehicle type by using the outline image of the vehicle and the license plate information obtained by using the camera.

SUMMARY OF THE INVENTION The present invention has been devised to solve the problems described above, and it is an object of the present invention to provide a vehicle type determination system for calculating a number of axles, a width, a radius, etc. using switches constituting trains, The purpose.

However, the objects of the present invention are not limited to those mentioned above, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its object is to provide a vehicle detection apparatus, A push counting unit for counting the number of times the switches mounted on the tray are pushed by the vehicle during a first predetermined time when the vehicle is sensed; A switch information obtaining unit for obtaining information on switches pushed by the vehicle when the vehicle is detected; And a vehicle type determination unit for determining the vehicle type based on the number of times the switches are pushed or the information about the switches.

Preferably, the push count counting unit and the switch information obtaining unit use mechanical switches formed in the vehicle width direction as the switches.

Preferably, the push count counting unit determines whether the time interval pushed between the switches is within a predetermined second time, and if the pushed time interval is determined to be within the second time, the push count is not counted Do not.

Preferably, the switch information obtaining unit obtains information on the switches based on the order based on the switch located at one end of the lane.

Preferably, the vehicle type determination unit calculates the number of axles of the vehicle based on the number of times the switches are pushed, calculates a vehicle width of the vehicle based on information on the switches, And the vehicle width of the vehicle.

Preferably, the vehicle type determination unit determines size information of each switch pushed by the vehicle when the information on the switches is acquired based on the order based on the switch located at one end of the lane, And calculates the vehicle width of the vehicle based on the information.

Preferably, the vehicle type determination unit calculates the width or yaw of the vehicle width.

Preferably, the vehicle type determination unit uses information on the number of consecutive switches among the switches that are determined to be pushed within a second predetermined time from the information on the switches when calculating the width based on the width of the vehicle.

Preferably, the vehicle type determination unit uses the minimum number of the continuous switches as the number information.

Preferably, the vehicle type determination unit uses information on the number of consecutive switches among the switches not determined to be pushed within a predetermined second time from the information on the switches when calculating the yaw rate based on the vehicle width of the vehicle.

Preferably, the vehicle type determination unit uses the maximum number of the consecutive switches as the number information.

Preferably, the vehicle type determination system includes: a normal operation determination unit that determines whether a predetermined number of consecutive switches among the plurality of switches are operating normally when the vehicle is sensed; And if the consecutive predetermined number of switches are judged not to operate normally, upper sensors located on the upper side of the lane or lower sensors formed on the bottom surface of the lane by using at least one of full height, full width and total length The vehicle type determination unit may determine the type of the vehicle based on the specification information of the vehicle.

Preferably, the normal operation determination unit groups the consecutive predetermined number of switches, selects one of the grouped switches, and determines a voltage to be connected to the line connecting the one of the switches and the power supply, It is determined whether any one of the switches is operating normally by using a detector.

Preferably, the normal operation determination unit includes: a supply voltage detection unit that detects a voltage supplied to any one of the switches; A voltage comparator comparing the detected voltage with a reference voltage to determine whether the detected voltage is equal to or higher than the reference voltage; And if it is determined that the detected voltage is equal to or higher than the reference voltage, it is determined that the one of the switches is operating normally. If it is determined that the detected voltage is less than the reference voltage, A first operation state determining unit for determining whether a voltage is supplied to the first switch or the second switch; And if it is determined that the voltage is supplied to any one of the switches, it is determined that the one of the switches is operating normally. If it is determined that the voltage is not supplied to any one of the switches, And a second operating state determination unit that determines that the second operating state is not satisfied.

The present invention can achieve the following effects through the above-described configurations.

First, since the switches constituting the trains are used, it is possible to extract valid data more accurately than when using a geomagnetic sensor.

Second, even if some of the switches constituting the trains do not operate normally, it becomes possible to determine the vehicle type of the vehicle by using the sensors located at the rear.

1 is a conceptual diagram schematically showing a vehicle type determination system according to a preferred embodiment of the present invention.
FIG. 2 and FIG. 3 are views showing one embodiment of the trains constituting the vehicle type determination system according to the present invention.
4 is a reference diagram for explaining a function of the vehicle type determination unit constituting the vehicle type determination system.
5 is a block diagram illustrating configurations added to the vehicle type determination system according to the present invention.
6 is a block diagram showing an internal configuration of a normal operation determination unit constituting the vehicle type determination system.
FIG. 7 is a lower sensor layout when the vehicle type calculation unit constituting the vehicle type determination system is implemented as a first type for calculating the full width of the vehicle or a second type for calculating the total length of the vehicle.
Fig. 8 is an upper sensor layout diagram when the vehicle type calculation unit constituting the vehicle type determination system is implemented as a third type for calculating the height of the vehicle.
9 is a reference diagram for showing that the distance values from the board to the top surface of the vehicle are different according to the type of the vehicle.
FIG. 10 is a reference diagram for explaining a method of selecting a number area.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

1 is a conceptual diagram schematically showing a vehicle type determination system according to a preferred embodiment of the present invention.

1, the vehicle type determination system 100 includes a vehicle sensing unit 110, a push counting unit 120, a switch information obtaining unit 130, a vehicle type determination unit 140, a power supply unit 150, 160). The vehicle type determination system 100 may be implemented as a single device or a plurality of devices such as a server and a terminal.

The power supply unit 150 performs a function of supplying power to each configuration of the vehicle type determination system 100.

The main control unit 160 performs a function of controlling the overall operation of each configuration of the vehicle type determination system 100.

The vehicle sensing unit 110 performs a function of sensing an incoming vehicle. The vehicle sensing unit 110 may sense the vehicle using an upper sensor provided on the upper side of the road or a lower sensor formed on the bottom of the road through a support such as a streetlight. At this time, the vehicle sensing unit 110 may use an ultrasonic sensor as an upper sensor or a lower sensor.

When the vehicle is sensed by the vehicle sensing unit 110, the push count count unit 120 counts the number of times the switches mounted on the treadle are pushed by the vehicle for a predetermined first time, . The push time counting unit 120 limits the time for counting the push count to the first time in order to prevent an error from occurring in the calculation of the number of axes of the specific vehicle by the other vehicle. A method of counting the number of pushes and calculating the number of axes will be described later.

The push number counting unit 120 may use switches mounted on the trays as switches for counting the number of pushes, in particular, mechanical switches formed in the width direction of the lane. Here, forming in the width direction of the lane means that it is formed by being aligned in the vertical direction with respect to the side lane. In the present invention, a push-button switch can be used as an example of a mechanical switch.

FIG. 2 and FIG. 3 are views showing one embodiment of the trains constituting the vehicle type determination system according to the present invention. The switches for counting the number of pushes are provided in the trays 200 and can be applied to the present invention.

The trailer 200 is a component of the automatic vehicle classifying device and is installed on a front road surface such as an unmanned lane of a closed type inlet and a mixed vehicle type lane of open type entrance to measure the number of axles, Is automatically determined.

The trays 200 include a plurality of switches 210 and an electronic control board for interfacing the switches 210 to measure the number of axes, Although FIG. 2 and FIG. 3 illustrate that 272 switches are provided in the trays 200, the number of switches included in the trays 200 is not limited thereto.

2, the tracel 200 according to the first embodiment combines 272 switches 210 in units of 8 bits (8 bits, 1 byte) to form 34 8-bit shift registers And transmits the data to the vehicle classifier through the logic 220.

Logic # 1 through Logic # 34 transmit data of logic # 1 to logic # 2, and then operate in a manner that transfers data of logic # 1 and logic # 2 to logic # 3. That is, Logic # 1 through Logic # 34 operate in a manner that combines the data received from the previous logic with the data they have acquired and sends them to the next logic.

Next, referring to FIG. 3, the trailer 300 according to the second embodiment combines 272 switches 310 into odd-numbered switches and even-numbered switches in order based on one end, Transmits the data to the vehicle classifier through the EVEN logic 320 processing the logic or EVEN contacts and the ODD logic 330 processing the ODD contacts.

Referring back to FIG.

The push number counting unit 120 performs a function of determining whether the time interval pushed between the switches is within a predetermined second time. Also, if it is determined that the pushed time interval is within the second time, the push time counting unit 120 performs a function of excluding the later push from the count number.

The reason why the push count counting unit 120 performs such a function is that the front left wheel and the front right wheel can push the switch with a time difference when the vehicle travels slightly on the lane. In this case, if the pushing is counted later, the number of axles of the vehicle may be wrong. Therefore, according to the present invention, when the interval between the pushed times of the front left wheel and the front right wheel is within a predetermined value, the above-mentioned problem can be solved by not counting the pushing afterwards.

The switch information acquiring unit 130 acquires information about the switches pushed by the vehicle when the vehicle is sensed by the vehicle sensing unit 110. [ The switch information acquisition unit 130 may operate simultaneously with the push number count unit 120, but the present invention is not limited to this, and either of them may be performed first.

The switch information acquisition unit 130 may perform the above-described function by using the switches used for counting the number of pushes by the push number count unit 120. [ The switches have been described above with reference to FIGS. 2 and 3, and a detailed description thereof will be omitted here.

On the other hand, the switch information obtaining unit 130 can obtain information on the switches based on the order based on the switch located at one end of the lane. For example, a switch located at the outermost position of the lane of the lane is called a switch 1, and the number information sequentially appended from the lane to the inside in the lane of the lane is used as information about the switch (e.g., The fifth switch is the fifth switch, and the fifth switch is the information about this switch).

The vehicle type determination unit 140 determines the type of the vehicle based on at least one of the number of times the switches counted by the push count counting unit 120 are pushed and the information about the switches obtained by the switch information obtaining unit 130 And performs a function of judging.

The vehicle type determination unit 140 can calculate the number of axles of the vehicle based on the number of times that the switches are pushed. Also, the vehicle type determination unit 140 can calculate the vehicle width of the vehicle based on the information about the switches. The vehicle type determination unit 140 can determine the vehicle type of the vehicle based on at least one of the values thus calculated (that is, at least one of the number of axles of the vehicle and the vehicle width). In this case, the width refers to the width of one wheel, that is, the thickness of the wheel, and the distance refers to the distance between the left and right wheels.

4 is a reference diagram for explaining a function of the vehicle type determination unit constituting the vehicle type determination system. The vehicle type determination unit 140 can determine the vehicle type of the vehicle in consideration of the example of the vehicle classification standard shown in FIG.

The vehicle type determination unit 140 determines the size information of each switch pushed by the vehicle when information on the switches is acquired by the switch information acquisition unit 130 based on the order based on the switch located at one end of the lane The vehicle width can be calculated based on the information on the switches. At this time, the vehicle type determination unit 140 can calculate the width or yaw of the vehicle width.

When the vehicle width is calculated by the width of the vehicle, the vehicle type determination unit 140 may use the information on the number of consecutive switches among the switches determined to be pushed within a predetermined second time with information on the switches. In particular, the vehicle type determination unit 140 can use the minimum number of consecutive switches as the number of switches.

A method of calculating the vehicle width by the vehicle type determination unit 140 will be described as an example.

Assume that the size of each switch formed in the lane is 5 cm, and that the switch located at the left end of the lane is the first switch, the switches pushed by the vehicle are the switches from No. 6 to No. 10. In this case, the vehicle type determination unit 140 can calculate that the width is 25 cm by multiplying the number of switches pushed by the vehicle by the size of each switch.

On the other hand, suppose that the switches pushed by the vehicle include not only switches # 6 to # 10 but switches # 46 to # 52. However, it is possible to obtain a correct value when the wheel passes vertically with respect to the switches arranged in one direction on the lane of the vehicle. On the other hand, when the wheels are pressed against the switches with a predetermined inclination value with respect to the rotation of the wheel, a relatively larger number of switches can be pressed. Therefore, in the present invention, the minimum number of consecutive switches can be used in calculating the width by taking this point into account.

When calculating the mileage based on the width of the vehicle, the vehicle type determination unit 140 may use the information on the number of consecutive switches among the switches that are determined to be not pushed within a predetermined second time with information on the switches. In particular, the vehicle type determination unit 140 may use the maximum number of consecutive switches as the number of switches.

An example of how the vehicle type determination unit 140 calculates the radius is described as follows.

Assume that the size of each switch formed in the lane is 5 cm and that the switch located at the left end of the lane is the No. 1 switch. In this case, the vehicle type determination unit 140 can calculate that the wheel is 180 cm by multiplying the number of the switches not pushed by the vehicle by the size of each switch.

On the other hand, let's assume that the switches that are not pushed by the vehicle are switches # 1 through # 5 as well as switches # 11 through # 46. Switches that are not pushed by the vehicle when the vehicle passes through pushing switches aligned in one direction are A switches located between the two wheels, or B switches located between one wheel and one end of the road. In general, since the number of A switches is larger than the number of B switches, in the present invention, it is possible to use the maximum number of consecutive switches when computing a circle by taking this point into consideration.

The vehicle type determination system 100 may further include a normal operation determination unit 170 and a vehicle specification calculation unit 180 as shown in FIG. 5 is a block diagram illustrating configurations added to the vehicle type determination system according to the present invention.

The normal operation determination unit 170 determines whether a predetermined number of consecutive switches among the switches are normally operated when the vehicle is sensed by the vehicle sensing unit 110.

The normal operation judging unit 170 groups the consecutive predetermined number of switches, selects one of the switches among the grouped switches, and connects to the line connecting the selected one of the switches and the power supply. It is possible to determine whether any one of the switches operates normally.

The normal operation determination unit 170 may include a supply voltage detection unit 171, a voltage comparison unit 172, and a first operation state determination unit 173 as shown in FIG. 6A. 6 is a block diagram showing an internal configuration of a normal operation determination unit constituting the vehicle type determination system.

The supply voltage detecting unit 171 detects a voltage supplied to any one of the switches.

The voltage comparator 172 compares the voltage detected by the supply voltage detector 171 with a reference voltage to determine whether the detected voltage is equal to or higher than a reference voltage.

The first operating state determination unit 173 determines that one of the switches is operating normally when the voltage comparator 172 determines that the detected voltage is equal to or higher than the reference voltage. In addition, the first operating state determination unit 173 determines that one of the switches does not operate normally when the detected voltage is less than the reference voltage.

Meanwhile, as shown in FIG. 6 (b), the normal operation determination unit 170 may include a supply state determination unit 174 and a second operation state determination unit 175.

The supply determination unit 174 determines whether a voltage is supplied to any one of the switches.

The second operation state determination unit 175 determines that one of the switches is operating normally when the supply state determination unit 174 determines that the voltage is supplied to one of the switches. If it is determined that the voltage is not supplied to any one of the switches, the second operating state determination unit 175 determines that one of the switches is not operating normally.

Referring back to Fig.

When it is determined by the normal operation determination unit 170 that the predetermined number of consecutive switches do not operate normally, the vehicle specification calculation unit 180 determines whether the upper sensors located on the upper side of the lane or the sub- And calculates the specification information of the vehicle including at least one of full height, full width, and total length using the sensors. In this case, the vehicle type determination unit 140 can determine the vehicle type of the vehicle based on the vehicle specification information calculated by the vehicle specification calculation unit 180.

The vehicle specification calculation unit 180 may calculate the full width of the vehicle or the total length of the vehicle using the lower sensors provided on the bottom surface of the lane where the trailer 200 is located.

The lower sensor is formed at a second point beyond the first point where the trajectory 200 is located on the lane surface, and is formed at least on the bottom surface of the lane. The lower sensor may be formed, for example, as the lower sensors 770a, 770b, ..., 770n shown in FIG. FIG. 7 is a lower sensor layout when the vehicle type calculation unit constituting the vehicle type determination system is implemented as a first type for calculating the full width of the vehicle or a second type for calculating the total length of the vehicle.

Also, the vehicle specification calculation unit 180 can calculate the height of the vehicle using upper sensors provided on the upper side of the lane where the trailer 200 is located.

The upper sensor is formed at the second point, like the lower sensor, and is formed on at least one support (ex. Streetlight) located on the upper side of the vehicle. The upper sensor may be formed, for example, as the upper sensors 710a, 710b, ..., 710n shown in FIG. Fig. 8 is an upper sensor layout diagram when the vehicle type calculation unit constituting the vehicle type determination system is implemented as a third type for calculating the height of the vehicle.

Meanwhile, it is preferable that a plurality of lower sensors and upper sensors are provided in order to increase the sensing efficiency. In this case, the plurality of lower sensors and the upper sensors may be arranged in a row (longitudinally or transversely) or radially.

Hereinafter, a more detailed description will be given with reference to the drawings.

First, the vehicle specification calculation unit 180 in the case of calculating the full height of the vehicle will be described. Overall height refers to the height from the ground plane to the highest point of the vehicle, that is, the distance from the surface of the wheel to the vehicle roof. The antennas are excluded when computing the altitude.

When calculating the height of the vehicle, the vehicle specification calculation unit 180 uses upper sensors provided at higher positions than the vehicle. The following description refers to Fig.

The upper sensors 710a, 710b, ..., 710n are arranged along the traveling direction of the vehicle 730 on the bottom of the board 720 located on the upper side of the road. At this time, the board 720 may be realized as a bar shape in which the traveling direction of the vehicle 730 is the longitudinal direction. It is preferable that the upper sensors 710a, 710b, ..., 710n are arranged in at least two rows on the bottom surface of the board 720 in order to increase the possibility of acquiring sensing data.

Reference numeral 740 denotes an example of a sensor for vehicle detection. It is preferable that the vehicle sensing sensor 740 is positioned in front of the upper sensors 710a, 710b, ..., 710n for smooth driving of the upper sensors 710a, 710b, ..., 710n.

The internal configuration of the vehicle specification calculation unit 180 implemented as the third type for calculating the vehicle height is described in detail as follows.

When calculating the vehicle height, the vehicle specification calculation unit 180 includes a first transmission unit, a first time value measurement unit, a first reception unit, a second time value measurement unit, a distance value calculation unit, and a vehicle height calculation unit.

The first transmitter performs a function of generating and outputting a first signal to the top surface of the vehicle using each upper sensor.

The first time value measuring unit measures the first time values of the first signal output.

The first receiving unit performs a function of collecting a second signal reflected from a top surface of the vehicle using each upper sensor.

And the second time value measurement unit performs a function of measuring the second time values for which the second signal is collected.

The distance value calculation unit calculates distance values from the board to the top surface of the vehicle using the moving distance per second, the first time values, and the second time values of the first signal or the second signal.

The distance value calculation unit can calculate the distance value according to the following formula.

Distance value = (second time - first time) 占 (moving distance of the first signal or the second signal per second)

The vehicle height calculation unit calculates the height of the vehicle based on the height values from the bottom surface of the road to the board and the difference values between the calculated distance values.

The formula for calculating the vehicle height can be expressed as:

Height of the vehicle = Height value from the bottom surface of the road to the board - Distance value (distance from the board to the top surface of the vehicle)

9 is a reference diagram for showing that the distance values from the board to the top surface of the vehicle are different according to the type of the vehicle. 9 (a) is an example of a passenger car, (b) is an example of a van, and (c) is an example of a van.

A board is attached to one end of the support table 750 and upper sensors 760a, 760b, 760c, 760d, 760e, and 760f are mounted on the bottom surface of the board. The upper sensors 760a, 760b, 760c, 760d, 760e, and 760f sense a target positioned downward, and the arrows are acquired by upper sensors 760a, 760b, 760c, 760d, 760e, and 760f Show distance value. Since the distance values will differ depending on the type of vehicle, in this embodiment, it is possible to determine the type of vehicle by calculating the height of the vehicle.

Next, the vehicle specification calculation unit 180 in the case of calculating the full width or the total length of the vehicle will be described.

The overall width refers to the width of the widest part of the width of the vehicle, that is, the length from the right to the left of the front wheel of the vehicle. The rearview mirror is excluded when calculating the full width. The overall length refers to the horizontal length from the front end to the rear end of the vehicle, that is, the length from the front bumper to the rear bumper.

In the case of calculating the full width or the total length of the vehicle, the vehicle specification calculation unit 180 uses lower sensors formed on the road. The following description refers to Fig.

The lower sensors 770a, 770b, ..., 770n are embedded in the bottom surface of the road. The sub-sensors 770a, 770b, ..., 770n for calculating the full width of the vehicle are arranged in a direction perpendicular to the traveling direction of the vehicle as shown in Fig. 7 (a) The sensors 770a, 770b, ..., 770n are arranged in the traveling direction of the vehicle as shown in Figure 7 (b). The lower sensors 770a, 770b, ..., 770n for calculating the full width of the vehicle are preferably arranged in at least two rows in order to increase the acquisition rate of the sensing data, and the lower sensors 770a , 770b, ..., 770n are arranged in at least two rows.

The internal configuration of the vehicle specification calculation unit 180 implemented as the first type for calculating the full width of the vehicle is as follows.

When calculating the full width of the vehicle, the vehicle specification calculation unit 180 includes a second transmission unit, a second reception unit, a first position information acquisition unit, and a vehicle width calculation unit.

The second transmitter performs a function of generating and outputting a third signal to the lower surface of the vehicle using each lower sensor.

The second receiver performs a function of collecting the fourth signal reflected from the lower surface of the vehicle using each lower sensor.

The first position information obtaining unit obtains position information of two lower sensors located on both outer sides of the lower sensors from which the fourth signal is collected.

For example, if 50 sensors are embedded in a lane bottom of a road and the fourth signal is collected from the eighth sensor from the left to the 40th sensor, Sensor and the 40th sub-sensor from the left. The location information of each sub-sensor is stored in the DB, and the location information can be found based on the ID of the sub-sensor.

Preferably, the first position information obtaining unit detects the two lower sensors with respect to the lower sensors for which the fourth signal is collected within a predetermined time. The reason for this is to calculate the total width more precisely by excluding the case where it is reflected from other parts (ex. Rearview mirror) except the bottom surface of the vehicle.

The vehicle width calculation unit calculates a full width of the vehicle based on the position information of the two lower sensors.

The vehicle width-width calculation unit may calculate the full width of the vehicle according to the following equation (1).

Figure 112015071371762-pat00001

In the above, z means the full width of the vehicle. x 1 and y 1 denote the positional information of any one of the two sub-sensors located on both outer sides, and x 2 and y 2 denote the positional information of the other of the two sub-sensors located on both outer peripheries.

In Equation (1), it is considered that the position information of the lower sensor is two-dimensional. Even when the position information of the lower sensor is three-dimensional, the entire width of the vehicle can be calculated in this manner.

The internal configuration of the vehicle specification calculation unit 180 implemented as the second type for calculating the vehicle's total length is as follows.

When calculating the total length of the vehicle, the vehicle specification calculation unit 180 includes a third transmission unit, a third reception unit, a second position information acquisition unit, and a vehicle length calculation unit.

The third transmitter performs a function of generating and outputting a fifth signal to the lower surface of the vehicle using each lower sensor.

The third receiver performs a function of collecting the sixth signal reflected from the lower surface of the vehicle using each lower sensor.

The second position information obtaining unit obtains position information of the two lower sensors located on both outer sides of the lower sensors from which the sixth signal is collected.

And the second position information obtaining unit preferably detects the two lower sensors with respect to the lower sensors for which the sixth signal is collected within a predetermined time. The reason for this is to calculate the electric field more precisely by excluding the case where it is reflected from other parts except the lower surface of the vehicle.

The vehicle total length calculation unit calculates the total length of the vehicle based on the position information of the two lower sensors.

Meanwhile, the vehicle specification calculation unit 180 may acquire information about the vehicle (e.g., license plate information of the vehicle), and the vehicle type determination unit 140 may determine the vehicle type of the vehicle based on the information about the vehicle.

The vehicle specification calculation unit 180 can acquire information about the vehicle based on data communication with the high-pass terminal mounted on the vehicle. The vehicle specification calculation unit 180 may also acquire information about the vehicle based on the image information obtained by photographing the vehicle.

When acquiring the license plate information of the vehicle from the information about the vehicle, the vehicle specification calculation unit 180 performs a function of recognizing the numbers on the license plate of the vehicle. In this case, the vehicle specification calculation unit 180 includes a license plate image acquisition unit, a character / number area extraction unit, a number area selection unit, and a number recognition unit.

The license plate image acquiring unit acquires the license plate image by photographing the license plate of the vehicle.

The character / number region extraction unit extracts a character region and a number region from the license plate image. The character / number region extraction unit may extract the character region first from the license plate image, and then extract the number regions divided by the character region.

The number area selection unit performs a function of selecting one of the extracted number areas. The numeric region selection unit may compare the sizes of the extracted numeric regions to select a numeric region having a relatively small size and compare the positions of the extracted numeric regions in the license plate image to select the numeric region located on the left side or the upper side It is possible.

FIG. 10 is a reference diagram for explaining a method of selecting a number area. The current car number in Korea is a combination of two digits, letters and four digits. The two-digit number indicates the vehicle type symbol, and the details are as follows.

Passenger cars: 01 ~ 69

Vans: 70 ~ 79

Vans: 80 ~ 97

Special cars: 98 ~ 99

As shown in FIGS. 10 (a) and 10 (b), the first numeral region representing the vehicle type symbol is composed of two-digit numbers and is smaller in size than the second numeral region composed of four digits. Also, the first number area in the license plate is located on the left side or the upper side when compared with the second number area. Therefore, in this embodiment, it is possible to select the numerical area in consideration of this point.

The number recognition unit recognizes the numbers in the selected number area.

It is to be understood that the present invention is not limited to these embodiments, and all elements constituting the embodiment of the present invention described above are described as being combined or operated in one operation. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to perform a part or all of the functions in one or a plurality of hardware. As shown in FIG. In addition, such a computer program may be stored in a computer readable medium such as a USB memory, a CD disk, a flash memory, etc., and read and executed by a computer to implement an embodiment of the present invention. As the recording medium of the computer program, a magnetic recording medium, an optical recording medium, a carrier wave medium, and the like can be included.

Furthermore, all terms including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined in the Detailed Description. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (14)

A vehicle detection unit for detecting an entering vehicle;
And counts the number of times that the switches mounted on the tray by the vehicle are pushed for a first time when the vehicle is detected and the time interval pushed between the switches is within a second time A push count counting unit for counting whether or not the pushing time interval is within the second time;
Information on the switches pushed by the vehicle is detected when the vehicle is detected, information on the number of consecutive first switches among the switches determined to be pushed within the second time with information on the switches, A switch information acquisition unit for acquiring information on the number of consecutive second switches among the switches not determined to be pushed within a second time; And
Calculating the number of axles of the vehicle based on the number of times the switches are pushed, calculating the width of the vehicle based on the number of the first switches, And determining a vehicle type of the vehicle based on the number of axles of the vehicle, the width of the vehicle, and the radius of the vehicle,
And the vehicle type determination system. The method according to claim 1,
Wherein the push-count counting unit and the switch-information obtaining unit use mechanical switches formed in the width direction of the vehicle as the switches. delete The method according to claim 1,
Wherein the switch information obtaining unit obtains information on the switches based on the order based on the switch located at one end of the lane. delete 5. The method of claim 4,
The vehicle type determination unit determines the vehicle type based on the size information of each switch pushed by the vehicle and the information about the switches based on the order based on the switch located at one end of the lane, And calculating a width of the vehicle and a radius of the vehicle. delete delete The method according to claim 1,
Wherein the vehicle type determination unit uses the minimum number of the first switches as the number information of the first switches. delete The method according to claim 1,
Wherein the vehicle type determination unit uses the maximum number of the second switches as the number information of the second switches. The method according to claim 1,
A normal operation determining unit determining whether a predetermined number of consecutive switches among the switches are operating normally when the vehicle is sensed; And
When it is determined that the consecutive predetermined number of switches do not operate normally, the upper sensors located at the upper side of the lane or the lower sensors formed at the bottom of the lane are used to detect at least one of the full height, full width, A vehicle specification calculation unit for calculating specification information of the vehicle;
Further comprising:
Wherein the vehicle type determination unit determines the vehicle type of the vehicle based on the specification information of the vehicle. 13. The method of claim 12,
Wherein the normal operation determination unit groups a predetermined number of consecutive switches, selects one of the switches among the grouped switches, and uses a voltage detector connected to the line connecting the one of the switches and the power supply And determines whether any one of the switches is normally operating. 14. The method of claim 13,
The normal operation determination unit,
A supply voltage detector for detecting a voltage supplied to any one of the switches;
A voltage comparator comparing the detected voltage with a reference voltage to determine whether the detected voltage is equal to or higher than the reference voltage; And
If it is determined that the detected voltage is equal to or higher than the reference voltage, it is determined that one of the switches is operating normally, and if it is determined that the detected voltage is less than the reference voltage, The first operating state determination unit
/ RTI >
A supply determination unit for determining whether a voltage is supplied to any one of the switches; And
If it is determined that the voltage is supplied to any one of the switches, it is determined that one of the switches is operating normally. If it is determined that the voltage is not supplied to any one of the switches, The second operating state determining unit
And the vehicle type determination system.
KR1020150103934A 2015-07-22 2015-07-22 System for determining type of vehicle using treadle KR101751277B1 (en)

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KR101751277B1 true KR101751277B1 (en) 2017-06-29

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