KR100906241B1 - Treadle sensor unite for discriminating automobile model - Google Patents

Abstract

The present invention relates to a vehicle plate discrimination sensor unit and a vehicle type discrimination system using the same. More particularly, a vehicle type discrimination plate sensor unit for extracting information from a tire that is installed on a road and grounded, and a vehicle model in real time using the same. It relates to a vehicle type determination system that can determine the.

In order to achieve the above object, the vehicle plate discrimination plate sensor unit of the present invention includes: a base member installed on a road surface in a transverse direction with respect to a vehicle traveling direction and having a sensor mounting portion therein; A plurality of light emitting sensors installed at predetermined intervals in the sensor mounting portion; Light-receiving sensors mounted to the sensor mounting part so as to face the light-emitting bodies at a predetermined distance from each other; An elevating member which lifts and moves the light incident from the light emitting sensor to the light receiving sensor to block or open the light; And an answer plate installed at an upper portion of the elevating member and contacting the tire when the vehicle passes to press the elevating member upward.

The vehicle type discrimination plate sensor and the vehicle type discrimination system using the same according to the present invention have the advantage of reliably detecting the number of wheels, wheel widths, tires, and wheelbases of a vehicle driving on a road, and classifying the vehicle types in real time.

 Car type discrimination, answer plate, sensor

Description

Response sensor unit for vehicle type discrimination {TREADLE SENSOR UNITE FOR DISCRIMINATING AUTOMOBILE MODEL}

The present invention relates to a vehicle plate discrimination sensor unit and a vehicle type discrimination system using the same. More particularly, a vehicle type discrimination plate sensor unit for extracting information from a tire that is installed on a road and grounded, and a vehicle model in real time using the same. It relates to a vehicle type determination system that can determine the.

Providing new road plans, urban traffic management, and high-quality transportation services, the national logistics system can be efficiently broken down to identify accurate road conditions such as statistical management and urban problems, and to identify ergonomic traffic conditions. Vehicle model information is required.

In particular, it is very important to determine the type of car on the toll road, since the fee is collected according to the car type. In addition, in the collection of traffic information, a system capable of determining in real time the type of vehicle driving on the road is required.

In particular, as a method of unmanning the entrance in the toll collection system of toll roads, the types of toll vehicles, for example, light vehicles, passenger cars, vans, large vehicles, and oversized vehicles, are automatically determined, and the tolls corresponding to the vehicles are issued. Is being considered.

In this way, the vehicle type can be automatically determined by measuring the vehicle width or wheelbase (distance between wheels: 輪距) of the traffic vehicle. This can be realized by providing the same spacing of a plurality of tread switches in the width direction of the ultrasonic wave or the road surface, respectively.

An apparatus for discriminating such a vehicle model is disclosed in Korean Patent Laid-Open Publication No. 1984-003499 (Japanese Patent Application No. 57-13119), and is disclosed in Publication No. 1984-0004281.

The disclosed vehicle type discrimination apparatus includes a phototube device in which a plurality of pairs of opposing and receiver receivers are stacked in a vertical direction with a vehicle passageway interposed therebetween, and a wheel of a passing vehicle embedded in the vehicle passage corresponding to the installation position of the phototube device. A stepping device which detects the ground width of the wheel and the tread of the vehicle by varying the electrical resistance according to the stepping width of the step, and receives the output signals of both devices by connecting the phototube device and the stepping device to the wheel width and the vehicle. And a discrimination control device for outputting a vehicle type discrimination signal in accordance with the shading information of the photoelectric device when the tread of each axle is pressed and when passing between the axles.

Since the vehicle type discrimination apparatus uses the electrical signals of the photoelectric sensor and the tread device, the structure is relatively complicated, and there is a problem in that the pressure exerted by the tire can not be accurately sensed at high speed.

Korean Patent Laid-Open Publication No. 10-2005-0081701 discloses a vehicle model discrimination answering device for discriminating a vehicle type by detecting a wheel width and lubrication of a vehicle by a contact contacted by a pressing force while the wheel of the vehicle contacts the road surface. have.

Korean Patent Laid-Open No. 2001-0097490 discloses a non-contact vehicle type discrimination device and a vehicle type discrimination method according to a vehicle's axial coefficient and a tire size, and Patent Publication No. 2000-009379 discloses a sensor assembly for vehicle type discrimination using a common contact and an individual contact. And a method of manufacturing a reply board device using the same, and Patent Publication No. 2004-05302 discloses a vehicle type discrimination apparatus using image information of photographing a vehicle.

The method using the vehicle type discrimination sensor using the common contact point and the individual contact point is difficult to apply in a bad condition in which hundreds of thousands of vehicles are moved per day, and discrimination by photographing is difficult to identify a vehicle traveling at high speed.

The present invention has been made to solve the above problems, by accurately recognizing the lubrication, wheel width, number of tires and tire width of the vehicle traveling on the road, it is possible to improve the reliability according to the real-time model discrimination, but the vehicle discrimination simple structure The purpose of the present invention is to provide an answer board sensor unit and a vehicle type discrimination system using the same.

In order to achieve the above object, the vehicle plate discrimination plate sensor unit of the present invention includes: a base member installed on a road surface in a transverse direction with respect to a vehicle traveling direction and having a sensor mounting portion therein; A plurality of light emitting sensors installed at predetermined intervals in the sensor mounting portion; Light-receiving sensors mounted to the sensor mounting part so as to face the light-emitting bodies at a predetermined distance from each other; An elevating member which lifts and moves the light incident from the light emitting sensor to the light receiving sensor to block or open the light; And an answer plate installed at an upper portion of the elevating member and contacting the tire when the vehicle passes to press the elevating member upward.

The lifting member is provided between the light emitting sensor and the light receiving sensor, characterized in that it comprises a shutter with a slit formed, and an elastic member for elastically biasing the shutter upward.

And supporting the shutter in a liftable manner and having a guide groove formed to be inserted into an inner surface of the base member.

In order to achieve the above object, the vehicle plate discrimination sensor unit according to another embodiment of the present invention includes: a base member installed on a road surface in a transverse direction with respect to a vehicle traveling direction and having a sensor mounting portion therein; Tact switches are installed on the sensor mounting portion at predetermined intervals and turned on / off when passing through the vehicle; And an answer plate installed at an upper portion of the tact switch to contact the tire when passing through the vehicle and press the tact switch upward.

And in order to achieve the above object, the vehicle type determination system of the present invention includes a signal processing unit for processing the signal output from the vehicle type discrimination plate sensor unit having a light-emitting and light-receiving sensor or a text switch; A vehicle model information database unit for storing information on a vehicle model discrimination including at least one of a wheel width, wheel rolling, and number of tires of the vehicle; A vehicle model discriminating unit for classifying a vehicle model by comparing the signal transmitted from the signal processing unit with the information read from the vehicle model information database unit; And a controller for controlling the vehicle type discrimination answer board sensor unit, the vehicle model information database unit, and the vehicle model discrimination unit.

Answer plate sensor for identifying the type of vehicle according to the present invention and the vehicle type determination system using the same has the advantage that can be classified in real time by reliably detecting the number of wheels, wheel width, tires of the vehicle running on the road.

In addition, the inside of the base member with sensors for detecting the vehicle model is sealed by the plate to prevent rainwater penetration, thereby accurately extracting the reliable vehicle classification even in the harsh environment of roads such as snow and rain, which are seasonal use constraints. High quality traffic information database is possible.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the vehicle type discrimination plate sensor unit and a vehicle type determination system using the same according to the present invention.

1 is a cross-sectional view conceptually illustrating a state in which a vehicle plate discrimination plate sensor unit is installed according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the vehicle plate discrimination plate sensor unit of FIG. 1.

1 and 2, the present invention provides a wheel width (wheel width) and wheeler of the wheel 201 of the vehicle 200 that is in contact with the road surface of the road 205 when the vehicle 200 proceeds along the road 205. (Distance between wheels), the number of wheels is sensed, and the type (vehicle type) of the vehicle 200 is determined using the detected information and the vehicle type information data stored in an existing database.

Answer plate sensor unit 10 for vehicle type discrimination according to an embodiment of the present invention is preferably installed in a direction perpendicular to the vehicle traveling direction, the base member 12 having a sensor mounting portion 11 and the sensor mounting portion 11 A plurality of light emitting sensors 15 accommodated and installed at predetermined intervals, light receiving sensors 17 mounted on the sensor mounting part 11 so as to face each light emitting sensor 15 at a predetermined distance, and a light emitting sensor Lifting member 20 to block or open the light incident to the light receiving sensor 17 from the lifting and lifting (20), and installed on the lifting member 20, the tire 201 and when passing through the vehicle 200 and The contact plate 30 is provided to contact and press the lifting member 20 upward.

The base member 12 is embedded and installed on the road on which the vehicle proceeds. The groove formed by drawing a predetermined depth downward from the upper surface of the base member 12 has a sensor mounting portion 11 continuously formed along the longitudinal direction.

The base member 12 may vary depending on the width of the road 205 but may have one or a plurality of divided structures. The sensor mounting portion 11 may be installed to be continuous in the longitudinal direction of the base member 12 or may be formed as an independent sensor mounting space.

The sensor mounting part 11 is equipped with a light emitting sensor 15 and a light receiving sensor 17 for sensing light emitted from the light emitting sensor 15, respectively.

The light emitting sensor 15 is mounted along a side wall of the base member 12 of the sensor mounting part 11 at a predetermined distance from each other. The light emitting sensor 15 is installed in a buried groove formed in the side wall, so that light is directed toward the light receiving sensor 17 side. As the light emitting sensor 15, a light emitting diode having a visible or infrared wavelength region may be used.

The light receiving sensor 17 is mounted in a plurality of embedding grooves on the side wall of the base member 12 facing the light emitting sensor 15. As the light receiving sensor 17, a photosensitive diode, a photosensitive transistor, or the like capable of detecting light having a wavelength in the visible or infrared region may be used.

In addition, although not shown in the drawings, in the present invention, the function of the present invention can be sufficiently exhibited by using a commercially available optocoupler component that is integrated with light emitting (LED) and light receiving (Photo TR) and can block external light in the middle. .

A lifting member 20 for blocking or opening the light incident from the light emitting sensor 15 to the light receiving sensor 17 is installed in the base member 11.

The elevating member 20 includes a shutter 21 installed between the light emitting sensor 15 and the light receiving sensor 17 to block or pass light, and an elastic member 25 to elastically bias the shutter 21 upward. do. And guide grooves 19 for guiding the lifting and lowering of the shutter 21 are formed on the inner side surfaces of both side walls of the base member 12. Therefore, the shutter 21 descends or rises along the guide groove 19.

The shutter 21 has a slit 23 formed at the center thereof, and initially, light emitted from the light emitting sensor 15 passes through the slit 23 and is positioned at a height that can be detected by the light receiving sensor 17. .

Therefore, when the vehicle passes, the shutter 21 is lowered to block the light emitted from the light emitting sensor 15. When the load applied from the upper part after the passage of the vehicle is removed, the vehicle is raised to the initial position by the elastic member 25 positioned at the lower part of the shutter 21. A spring is used as the elastic member 25. In addition, leaf springs and the like can be used.

In addition, the upper plate of the shutter 21 is provided with a response plate 30 which contacts the tire 201 of the vehicle when the vehicle passes. Answer plate 30 is supported over the upper surface of the base member 12 and is preferably installed at the same height as the road surface of the road 205, but may be slightly projected as needed.

The answer plate 30 allows only the shutter 21 to which the tire 201 is contacted by using an elastic material to descend. When the shutter 21 is lowered to block the light, the resistance value of the light receiving sensor 17 is changed, and thus, the distance between the tires, the number of tires, and the like between the tires are easy at the same time as the width of the contacted tire 201. Can be detected.

And the answer plate 30 is preferably sealed with a waterproof material for the waterproof function on the upper surface of the base member 12 and the contact plate 30 contact portion so as to seal the inside of the base member 12.

3 illustrates a vehicle plate discrimination plate sensor unit 40 according to another embodiment of the present invention.

Referring to the drawings, the base member 42 which is installed on the road surface in the transverse direction with respect to the vehicle traveling direction and has a sensor mounting portion 41 therein and a plurality of sensor mounting portions 41 are installed at predetermined intervals when passing through the vehicle. Tact switches 50 are turned on and off, and the answer plate 60 is installed on the upper part of the tact switch 50 to contact the tire when passing through the vehicle and press the tact switch upward.

Tact switch 50 mounted on the sensor mounting portion 41, when a constant load is applied from the upper button 55 is lowered to output an electrical signal by the resistance circuit. When the load is removed, the button 55 returns to its original position.

Therefore, when the vehicle passes, the tire of the passing vehicle can detect information such as the distance between the tires along with the tire width of the passing vehicle from the output value of the corresponding text switch 50.

Meanwhile, components not described above in the embodiments illustrated in FIG. 3 are the same as the embodiments illustrated in FIGS. 1 and 2, and thus detailed descriptions thereof will be omitted.

Figure 4 shows an embodiment of a vehicle type determination system that can determine the vehicle type using the versatile sensor unit according to the present invention.

Referring to the drawings, the vehicle model discrimination system includes a reply board sensor unit 10, a signal processor 70 for processing a signal sensed by the reply board sensor unit 10, and information such as lubrication, tire width, wheelbase, etc. for the vehicle model. Model determination unit for comparing the vehicle model information database unit 80 and the signal detected by the response plate sensor unit 10 with the information stored in the vehicle information and vehicle model information database unit 80 to determine the vehicle type 90 and the control part 100 are comprised.

The plate sensor unit 10 for vehicle type discrimination has the same structure as the embodiment shown in FIGS. 1 and 2, and recognizes the tire width and the rounding of the vehicle.

In addition, it is a matter of course that the plate sensor unit 40 shown in FIG.

The signal processing unit 70 is for processing a signal output from the answer board sensor unit 10 and synthesizes, amplifies, and A / D converts the output signal.

The vehicle model information database unit 80 stores information on vehicle model discrimination such as wheel width, wheeler, wheelbase, number of wheels, and the like. The information stored in the vehicle model information database unit 80 is derived by the vehicle model discrimination unit 90 and used as a reference for discriminating the vehicle model.

For example, if there are four wheels, the tire width is less than 180mm and the inner rim is less than 1150, the light passenger car, four wheels, the tire width (x) is 180mm <x <220mm, the inner rim is more than 1600mm, the large passenger car, the wheel is 6 If the tire width x is 200 mm <x <210 mm or less and the wheel front wheel value is 1700 mm or more, information such as a truck of 2.5 to 15 tons or less is recorded.

The vehicle model discrimination unit 90 compares the signal transmitted from the signal processing unit 70 with the information read from the vehicle model information database unit 80 to determine the vehicle model.

The control unit 100 is for controlling the response plate sensor unit 10, the signal processing unit 70, the vehicle model information database unit 80, and the vehicle model discrimination unit 90. Although not shown in the present invention, the control unit controls the entire system such as external communication.

Hereinafter, with reference to the drawings will be described in detail the operation of the vehicle type determination system according to an embodiment of the present invention. 6 is a diagram conceptually showing vehicle type determination using a vehicle type determination system according to an exemplary embodiment of the present invention.

2 and 6, when the vehicle passes through the vehicle type discrimination plate sensor unit 10 installed on the road, the vehicle type is determined by the tires 201, 202, and 203, 204 of the vehicle 200. Light entering the light receiving sensor 17 of the plate sensor unit 10 is blocked.

When the light receiving sensor 17 is made of a photosensitive diode, light is blocked by the selected shutter 21 when the tire is in contact, so that the resistance of the light receiving sensor 17 converges to an infinite value. The width of the wheels (W1, W2, W5), the number of wheels, and the number of wheels (L1, L2) (distance between the wheels) are programmed according to the electrical signal or information detected by the selected light receiving sensor 17 as described above. Can be.

On the other hand, in a vehicle in which the rear wheels are usually composed of two wheels such as a truck, the distance W3 between the wheels of the rear wheels is also sensed by the response plate sensor unit 10, and the information is a vehicle model having two wheels of the rear wheels. Can be classified.

The inner plate information of the wheels 3a and 4a of the front wheels and the wheels 3b and 4b of the rear wheels is detected with the time difference t2-t1 and t4-t3 as the vehicle progresses.

This information makes it possible to generate data to compare models, and compares this information with the database of all models, that is, the data mining program to determine what type of vehicle it is. t2-t1, t4-t3) can be substituted to find the passage speed.

Therefore, when the vehicle type of the vehicle is classified, it is possible to calculate the individual passage speed and generate new traffic information by time-substituting the passage information of the vehicle model, that is, the corresponding wheelbase length, and generating new traffic information. It can be used as traffic information for Intelligent Transportation Systems (ITS) as comprehensive traffic information that can predict the past, present and future of roads by accumulating or storing vehicle flow information of individual factors such as deterioration and commute.

Answer plate sensor unit for vehicle type discrimination of the present invention, the sensors are built in the sensor mounting portion of the base member and the upper plate can be installed to prevent rain penetration of the base member, the structure is simple, rain, wind, It can be applied regardless of climate change such as sun and moon.

Therefore, the present invention is a useful invention that can achieve high-quality traffic information D / B by completing a physical environment that can accurately extract reliable vehicle classification even in the harsh environment of roads such as snow and rain, which is a requirement for seasonal use as well as day and night. to be.

Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments thereof are possible.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

1 is a cross-sectional view conceptually illustrating a state in which a response plate sensor unit for vehicle type determination according to an embodiment of the present invention is installed;

FIG. 2 is an exploded perspective view of an answer plate sensor unit for discriminating a vehicle model of FIG. 1;

3 is an exploded perspective view of an answer plate sensor unit for vehicle type determination according to another embodiment of the present invention;

4 is a block diagram showing a vehicle type determination system according to an embodiment of the present invention,

5 is a graph conceptually illustrating vehicle type determination using the vehicle type determination system of FIG. 4.

<Description of the symbols for the main parts of the drawings>

10: vehicle type identification plate sensor unit 11: sensor mounting part

12: base member 15: light emitting sensor

17: Light receiving sensor 21: Shutter

30: reply 70: signal processing unit

80: vehicle information database 90: vehicle identification unit

100: control unit

Claims (5)

A base member installed on the road surface in a direction transverse to the vehicle traveling direction and having a sensor mounting portion therein; A plurality of light emitting sensors installed at predetermined intervals in the sensor mounting portion; Light-receiving sensors mounted to the sensor mounting part so as to face each of the light-emitting sensors; An elevating member for elevating and blocking or passing light incident to the light receiving sensor from the light emitting sensor; And an answer plate installed at an upper portion of the elevating member to press the elevating member upwardly by contacting a tire when the vehicle passes. And the elevating member is provided between the light emitting sensor and the light receiving sensor and has a shutter having a slit formed therein, and an elastic member for elastically biasing the shutter upwardly. delete The answer plate sensor unit for discriminating a vehicle type according to claim 1, further comprising a guide groove which is supported to move up and down the shutter and is formed in the inner surface of the base member. delete delete

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