KR20180138468A - Smart road system - Google Patents

Abstract

According to an embodiment of the present invention, a smart load system comprises: a first sensor unit for measuring a weight of a vehicle; and an analyzing unit for analyzing the vehicle type of the vehicle through a second sensor unit for sensing an external shape of the vehicle, and the first sensor unit comprising: a first frame formed so as to support a load when the vehicle passes; a strain gauge part arranged in a grid such that a part protrudes through the first frame and senses the weight transferred to each of the protruding part; a second frame formed so as to support the strain gauge part; and a third frame having a support part protruding inwards to support the first frame, and the third frame being disposed apart from the second frame.

Description

[0001] SMART ROAD SYSTEM [0002]

In one embodiment of the present invention, a portion of the strain gauge portion is formed so as to protrude a certain height higher than the ground surface, so that the weight of the vehicle can be measured more accurately in a contact manner, and damage and measurement due to the load of the first frame, The weight of the first and second sensor units may be determined so that the second frame and the third frame are spaced apart from each other. The present invention relates to a smart road system for detecting a vehicle type and judging whether the vehicle type is excessive or not.

In general, a management department or a local government that manages a private road or a tunnel installed on the road imposes a predetermined toll on vehicles that pass through the road or tunnel.

At this time, the above-mentioned management departments or municipalities can classify the vehicle type (for example, vehicle information such as light car, small car, medium car, large car, etc.) can do.

This type classification system can be generally divided into two types of contact type and contactless type.

More specifically, the non-contact vehicle classification system analyzes vehicle types and traffic volume using information sensed by a non-contact type sensor such as an ultrasonic wave sensor, an ultrasonic sensor, or a laser on the road on which the vehicle travels, There is a problem that the information sensed according to the state of the road, the weather, the surrounding environment, the type of road (asphalt road, concrete road, etc.) is changed.

This makes it possible to install only a loop circuit sensor or a piezo sensor circuit on the road as in the case of Patent Registration No. 10-731808 on the road without using a sensor installed on the road in the non-contact manner as described above, Vehicle information was obtained by measuring only the distance between the axes and the length of the vehicle.

The contact type vehicle classification system is classified into three types according to the type of detector used: a leaf type, a loop coil type, and an optical fiber type. The main use is to count the number of wheels of a passing vehicle. It is relatively short and needs to be replaced from time to time, and maintenance is difficult during use.

Particularly, when only the vehicle-to-vehicle distance and the vehicle length are measured as described above, the vehicle information is different depending on the distance between the vehicle axes even in a vehicle of a similar displacement amount.

Further, the piezo sensor for measuring the vehicle information and the weight confirms the vehicle information by the vibration generated according to the driving of the vehicle. When the vehicle runs at a low speed, the vibration is hardly generated due to the speed of the vehicle, When the speed of the vehicle passing through the piezo sensor is rapidly operated because the sensor does not properly grasp the vehicle running on the road, the tire is not contacted with the relatively small piezo sensor or is momentarily contacted with the piezo sensor, There is a problem that the vehicle information can not be grasped properly.

Accordingly, even when the vehicle speed is not only low but also high speed, it is possible to precisely grasp the vehicle type, and propose a system that can classify the vehicle type through the contact type and the non-contact type sensor having a structure with a lifetime complemented.

1. Registered Patent No. 10-731808 (Registered on June 18, 2007) 2. Open Patent Publication No. 10-2006-0106150 (Dec. 12, 2006)

It is an object of the present invention to provide a strain gauge which is formed so that a part of a strain gauge portion protrudes a certain height higher than the ground surface so that the weight of the vehicle can be measured more accurately, The two frames and the three frames are spaced apart from each other so as to distribute the load of the vehicle, thereby minimizing the damage due to the load and the error in the measurement.

It is a further object of the present invention to provide a method and a device for controlling an analyzer, in which the first sensor unit comprises a main unit and one or more auxiliary units depending on whether the first sensor unit is in communication with the analyzer unit, And the first sensor unit can be easily installed, thereby facilitating the construction of the smart load system.

Yet another object of the present invention is to confirm the detected vehicle type in correspondence with the top and bottom information of the vehicle based on the weight measured in a contact manner through the first sensor unit and the outline sensed through the second sensor unit in a non- It is possible to more accurately determine the vehicle type of the vehicle passing through the road.

The problems to be solved by the present invention are not limited to the above-mentioned task (s), and another task (s) not mentioned is to be clearly understood to those skilled in the art to which the present invention belongs It can be understood.

According to an aspect of the present invention, there is provided a smart road system including a first sensor unit for measuring a weight of a vehicle and a second sensor unit for sensing an external shape of the vehicle, The first sensor unit may include a first frame formed to support a load when the vehicle passes through the first frame, a first frame extending through the first frame, A strain gage section arranged to sense the weight transmitted to each of the protruding sections, a second frame configured to support the strain gage section, and a support section protruding inward to support the first frame, And a third frame spaced apart from the first frame.

According to an example of the present invention, the first sensor unit may include a main unit and at least one auxiliary unit depending on whether communication with the analysis unit is possible, And the main section is formed such that at least two of the main section and the auxiliary section transmit the weight detected in the same contact period to the analyzing section.

According to an embodiment of the present invention, the third frame further includes a buffer portion formed to disperse a load transmitted to the support portion, and the buffer portion includes insertion portions protruding to both lower sides of the first frame And a support hole having a shape corresponding to the insertion portion to be fixed to the third frame.

According to an example of the present invention, the first sensor unit further includes a coupling hole communicating from the first frame to the inside of the support through the insertion portion, so that the first frame is fixed to the support portion. do.

According to an example of the present invention, when the first information sensed through the first sensor unit and the second information sensed through the second sensor unit for the vehicle type of the vehicle are inconsistent, an image of the vehicle is secured The second sensor unit further includes a camera, and the analyzing unit confirms the vehicle type of the vehicle through the vehicle number sensed by the image.

The smart load system according to at least one embodiment of the present invention configured as described above is configured such that a portion of the strain gauge portion protrudes a certain height higher than the ground surface to more accurately measure the weight of the vehicle, The second frame and the third frame are spaced apart from each other so as to support the load of the first frame transmitted from the wheels to disperse the load of the vehicle, thereby minimizing the damage due to the load and the measurement error.

The first sensor unit may include a main unit and one or more auxiliary units depending on whether the first sensor unit is in communication with the analyzer unit or not. By increasing or decreasing the number of one or more auxiliary units according to the length of the road, It is possible to facilitate the installation and facilitate the construction of the smart load system.

In addition, since the vehicle type detected in correspondence with the top and bottom information of the vehicle on the basis of the weight measured in a contact manner through the first sensor unit and the outline sensed through the second sensor unit in a non-contact manner, The vehicle type can be judged more accurately.

1 is a configuration diagram of a smart load system according to an embodiment of the present invention
Fig. 2 is an example of the smart load system of Fig. 1; Fig.
3 is a configuration diagram of a first sensor unit according to an embodiment.
4 is a cross-sectional view of the first sensor unit of Fig.
5 is an operational process of the smart load system of FIG. 1 according to one embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a smart rod system according to the present invention will be described in detail with reference to the drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the present specification, the same or similar reference numerals are given to different embodiments in the same or similar configurations. As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

It is to be understood that the drawings herein illustrate conceptual aspects of exemplary circuits embodying the principles of the invention. That is, it should be understood that the functions shown in the figures may be substantially represented on a computer-readable medium and performed by various processes performed by the computer or processor, whether or not the computer or processor is explicitly shown.

And, each function can be provided not only with dedicated hardware, but also with the use of hardware capable of executing software in connection with appropriate software. When provided by a processor, the functions may be provided by a single dedicated processor, a single shared processor, or a plurality of individual processors, some of which may be shared.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a configuration diagram of a smart load system according to an embodiment of the present invention, and FIG. 2 is an example of a smart load system of FIG.

Referring to FIGS. 1 and 2, the smart rod system 1000 may include a first sensor unit 100, a second sensor unit 200, and an analysis unit 300.

The first sensor unit 100 according to the embodiment of the present invention may be a weight measuring sensor capable of measuring the weight transmitted from each wheel when the first sensor unit 100 contacts the wheel of the vehicle 1 buried in the width direction of the road, have.

Next, the second sensor unit 200 is supported by a gantry structure, which is a gate structure used to support a structure erected from both sides of the road, for example, a traffic signal or a road sign on the road, It is possible to measure the external shape of the vehicle 1 which is located or stopped or is running on the road in the predetermined area.

Also, the second sensor unit 200 may be an external shape sensing sensor that can sense the external shape of the vehicle using laser or ultrasonic sensors.

Next, the analysis unit 300 calculates at least one of the inter-axis distance, the width, the tire width, the tire size, the number of tires, the distance between axles, and the weight of the vehicle 1 based on the weight measured through the first sensor unit 100 And the second sensor unit 200 is configured to derive the first information including at least one of the width and the length of the vehicle 1 based on the external shape of the vehicle 1 detected through the second sensor unit 200, Information can be derived.

In addition, the analyzer 300 may classify the vehicle type of the vehicle based on the weight measured through the first and second sensor units 100 and 200 and the sensed outline, and determine whether the vehicle is overloaded.

More specifically, the analysis unit 300 derives the weight by adding all the weights detected in the contact period of the vehicle 1 wheel derived from the weight measured through the first sensor unit 100, The actual load of the vehicle 1 can be derived through the weight of the vehicle, and the actual load can be compared with the detected vehicle type information to determine whether the vehicle 1 is overloaded.

Meanwhile, the second sensor unit 200 may further include a camera (not shown) to secure an image of the vehicle 1.

More specifically, the second sensor unit 200 detects the first information sensed through the first sensor unit 100 and the second information sensed through the second sensor unit 200 with respect to the vehicle type of the vehicle 1 When it is determined by the analyzing unit 300 that the images are not coincident with each other, an image or an image of the photographed vehicle 1 can be secured and transmitted to the analyzing unit 300.

At this time, the analyzer 300 can confirm the vehicle type of the vehicle 1 through the vehicle number detected from the secured image or image.

Hereinafter, the first sensor unit will be described in more detail with reference to FIG.

3 is a configuration diagram of a first sensor unit according to an embodiment.

3, the first sensor unit 100 includes a main unit 101 and one or more auxiliary units 103-1 to 103-N according to whether communication with the analysis unit 300 is possible or not, The number of one or more auxiliary portions 103-1 to 103-N may be determined depending on the width of the road.

According to an embodiment, the main unit 101 may transmit a pair of weights detected in the same period to the analyzer 300 in the first sensor unit 100 including the main unit and the at least one auxiliary unit.

For example, the main unit 101 may measure the first weight measured at the main unit 101 and the second weight measured at the same period from any one of the at least one auxiliary unit 103-3, Or relay the first and second weights measured at the same period from the one 103-3 and the other 103-5 of the at least one auxiliary section to the analysis unit 300 .

Hereinafter, the structure of the first sensor unit 100, which is further improved to reduce the measurement error and minimize the damage due to the contact of the vehicle wheel, will be described with reference to FIG.

4 is a cross-sectional view of the first sensor unit in Fig.

1 to 4, the first sensor unit 100, for example, the main unit 101 or one or more auxiliary units 103-1 to 103-N includes a strain gage unit 110, a first frame 120 ), A second frame 130, and a third frame 140.

First, the first frame 120 may be formed of a steel material so as to support the load of the vehicle 1 in contact with the wheels of the vehicle 1 when the vehicle 1 passes.

Next, the strain gage section 110 is a plurality of strain gage sensors 111-1 to 111-N placed in a grid in two rows in the transverse direction, as shown in Fig. 3, Each of the plurality of strain gauge sensors 111-1 to 111-N can measure the weight transmitted from the contacted wheel.

Here, the plurality of strain gauge sensors 111-1 to 111-N may be sensors that detect a mechanical microscopic change (Strain) when an electric signal (resistance change) is detected when contacting the wheels of the vehicle.

At this time, the strain gage unit 110 passes through the first frame 120 to directly contact the wheels of the vehicle 1, and a part of the plurality of strain gage sensors 111-1 to 111-N is arranged so as to protrude And the weight of the vehicle 1 to be delivered to the protruding portions can be measured.

That is, the first frame 120 is formed so as to be positioned on the ground surface of the road so as to be in direct contact with the wheels of the vehicle 1, and each of the plurality of strain gage sensors 111-1 to 111- The inner holes 121 corresponding to the shapes of the plurality of strain gage sensors 111-1 to 111-N may be formed at predetermined positions so as to protrude from the road surface.

According to the embodiment, the first frame 120 disperses the load transferred from the vehicle into the third frame 140, and further includes an insertion portion 123 formed on both sides thereof to be fixedly coupled to the third frame 140 .

Next, the second frame 130 may be formed to support the strain gage section 110.

More specifically, the second frame 130 can support loads transmitted from the vehicle 1 to the plurality of strain gage sensors 111-1 to 111-N.

The third frame 140 may be spaced apart from the second frame 130 and may include a support portion 141 protruding inwardly to support the first frame 130.

That is, the first sensor unit 100 is formed so that the third frame 140 and the second frame 130 are spaced apart from each other, so that when the vehicle 1 passes, the first frame 120 And the strain transmitted to the strain gage 110 can be dispersed.

More specifically, the third frame 140 may further include a buffer 143 formed to disperse a vertical load transmitted to the support 141.

The cushioning portion 143 is made of a material such as rubber or asphalt which is held elastic so that the insertion portions 123 protruding to both sides of the lower portion of the first frame 120 are fixed to the third frame 140 And support holes 145 having a shape corresponding to the insertion portion 123.

That is, the third frame 140 is configured such that when the vehicle 1 passes, the load transmitted from the contacted wheel to the insertion portion 123 of the first frame 120 is transmitted to the buffer portion 143 located at the support portion 141, . ≪ / RTI >

The third frame 140 has a coupling hole 142 communicating with the inside of the support portion 141 through the insertion portion 123 from the first frame 120 so that the first frame 120 is fixed to the support portion 141. [ (147) may be further formed.

More specifically, the engagement hole 147 is formed to limit the horizontal load, which is the movement of the first frame 120 in the x and y axes, which can be caused by the load transmitted from the contact wheel when the vehicle 1 passes The first frame 120 and the third frame 140 can be engaged with each other.

Hereinafter, the operation process of the smart load system will be described with reference to FIG.

5 is an operational process of the smart load system of FIG. 1 according to one embodiment.

Referring to FIGS. 1 to 5, the first sensor unit 100 may measure the weight transmitted from the wheel of the vehicle 1, which is embedded in the width direction of the road and passes therethrough (S100).

Next, the second sensor unit 200 is supported by a structure erected from both sides of the road, and can sense the contour of the vehicle 1 when the vehicle 1 passes (S110).

In addition, the second sensor unit 200 can secure the vehicle number of the vehicle 1 when the vehicle 1 passes through the camera (not shown), which is provided (S120).

Next, the analysis unit 300 calculates at least one of the inter-axis distance, the width, the tire width, the tire size, the number of tires, the distance between axles, and the weight of the vehicle 1 based on the weight measured through the first sensor unit 100 The vehicle 1 is detected by the second sensor unit 200 and at least one of the width, the length, the height, and the speed of the vehicle 1 sensed by the second sensor unit 200 The upper shape of the vehicle 1 as the second information can be derived (S130).

At this time, the analyzing unit 300 detects the vehicle type of the vehicle 1 corresponding to the first information from the pre-stored vehicle type information in order to accurately determine the vehicle type for the passing vehicle 1, It is possible to detect the vehicle type of the vehicle 1 that is detected from the stored vehicle type information and determine whether the vehicle type of the vehicle 1 detected from the first and second information coincides with each other (S140).

On the other hand, the analyzing unit 300 determines whether or not the vehicle type of the vehicle 1 corresponding to the first and second information is detected from the previously stored vehicle type information due to, for example, illegal modification of the vehicle 1, The vehicle type of the vehicle 1 can be determined based on the vehicle number of the vehicle 1 secured through the camera provided in the second sensor unit 200 at step S150.

Next, when the vehicle type is determined, the analysis unit 300 calculates the weight by adding all the weights detected in the contact period of the vehicle 1 wheel derived from the weight measured through the first sensor unit 100, The actual load of the vehicle 1 can be derived through the radii derived from the respective wheels (S160). Here, the term " radius of rotation " may refer to a value of a sum of weights sensed in a period of contact from any one wheel of the vehicle 1. [

Thereafter, the analyzing unit 300 may compare the actual load calculated and the vehicle type of the vehicle 1 to determine whether the vehicle 1 is actually loaded or not (S170).

The smart rod system described above is not limited in the configuration and method of the embodiments described above, but the embodiments may be modified so that all or some of the embodiments are selectively combined do.

1: vehicle
100: first sensor unit
101: main part
103-1 to 103-N:
110: strain gauge
111-1 to 111-N: a plurality of strain gage sensors
120: first frame
121: Inner hole
123:
130: second frame
140: Third frame
141: Support
143: buffer
145: Support hole
147: Coupling hole
200: second sensor unit
300: Analysis section
1000: Smart Load System

Claims (5)

1. A smart road system comprising: a first sensor unit for measuring a weight of a vehicle; and an analyzing unit for analyzing the vehicle type of the vehicle through a second sensor unit for sensing an external shape of the vehicle,
Wherein the first sensor unit comprises:
A first frame configured to support a load when the vehicle passes;
A strain gauge part arranged in a lattice such that a part of the strain gauge protrudes through the first frame and detects a weight transmitted to each of the protruded parts;
A second frame formed to support the strain gage portion; And
And a third frame spaced apart from said second frame, said support frame having a support protruding inwardly to support said first frame.
The apparatus of claim 1, wherein the first sensor unit comprises:
And a main part and at least one auxiliary part depending on whether communication with the analysis part is possible,
The number of any one or more auxiliary portions is determined according to the width of the road,
Wherein the main unit is configured to transmit a weight detected by the at least two of the main unit and the auxiliary unit to the analyzer in the same contact period.
The apparatus of claim 1, wherein the third frame comprises:
Further comprising a cushioning portion formed to disperse a load transmitted to the support portion,
The buffering portion
And support holes having a shape corresponding to the inserting portion so that the inserting portions protruding to both lower sides of the first frame are fixed to the third frame.
The apparatus of claim 3, wherein the first sensor unit comprises:
Further comprising a coupling hole communicating from the first frame to the inside of the support portion through the insertion portion so that the first frame is fixed to the support portion.
The method according to claim 1,
The second sensor unit may further include a camera for securing an image of the vehicle when the first information sensed through the first sensor unit and the second information sensed by the second sensor unit for the vehicle type of the vehicle do not match each other and,
And the analyzing unit confirms the vehicle type of the vehicle through the vehicle number sensed by the image.

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