KR101980607B1 - Apparatus and method for measuring weight of a vehicles using strain gauges - Google Patents

Abstract

The present invention improves the accuracy of weighing the vehicle by efficiently transmitting the load of the vehicle to the strain gauge while preventing unauthorized entry of the vehicle for overload avoidance, and various types of bridges of the strain gauge used for weighing the vehicle The present invention relates to a vehicle weighing apparatus using a strain gauge and a method for improving output sensitivity by configuring a half bridge circuit.

Description

Weighing device for vehicle using strain gauge and its method {APPARATUS AND METHOD FOR MEASURING WEIGHT OF A VEHICLES USING STRAIN GAUGES}

The present invention relates to a vehicle weighing apparatus using a strain gauge and a method thereof, and more particularly, to efficiently transfer the load of the vehicle to the strain gauge to improve the accuracy of the weighing of the vehicle, and to use the weighing of the vehicle. The present invention relates to an apparatus and a method for measuring the weight of a vehicle, the strain gauge being configured by various types of bridge circuits to increase output sensitivity.

Recently, the traffic volume is rapidly increasing with industrial development. As most of the traffic volume is moved through highways, overload vehicles are also increasing.

The operation of the overload vehicle is a major cause of shortening the service life of the road, bridge, etc., because it causes damage to the road, bridge, etc., and increases the cost for maintenance of the road.

In addition, the overload vehicle is a cause of a large traffic accident due to the heavy weight, the steering, braking, running ability, etc. are drastically reduced compared to the ordinary vehicle.

As a result, social interest in crackdowns on overloaded vehicles and the efficiency of measurement equipment is increasing.

Existing representative methods for cracking down on overload vehicles include installing equipment for measuring the weight of the vehicle on the road (for example, checkpoints, toll gates, etc.), and measuring the weight of the vehicle to determine the penalty. It is a way of adding.

However, this conventional method requires a lot of time to guide and stop the vehicle because the weight of the vehicle must be measured while the vehicle is stopped, and as a result, only some of the vehicles passing through have to be measured. It was very inefficient.

Accordingly, recently, a system for controlling overload vehicles by measuring the weight of the vehicle for moving vehicles has been developed and used.

For example, by attaching a strain gauge, which is a sensor that detects mechanical changes in electrical signals on the surface of a measurement position on the road, and measuring the change in fine dimensions, ie, strain, generated on the surface, The overload vehicle was identified through the identification of important stresses to confirm the strength and safety.

However, since the strain gauge senses the output change using the degree of bending of the surface passing by the vehicle, the load on the wheels of the vehicle is often not properly transmitted due to a structural feature designed to have a very narrow width between the sensors. In addition, the output voltage was low, there was a problem that can not accurately perform the axis detection and weight detection.

In addition, since the strain gauge is attached to the surface of the measuring device, there is a high risk of direct contact with the vehicle or damage due to the outside air environment, and thus there is a problem in that the cost is high due to maintenance.

Therefore, in the present invention, even if the width between the strain gauge is narrow, it is possible to efficiently transfer the load of the vehicle to be measured to improve the accuracy of weighing the vehicle, the strain gauge used for weighing the vehicle of various types of half bridge In order to improve the output sensitivity, a bridge circuit including a full bridge or a combination thereof is proposed.

Next, the prior art existing in the technical field of the present invention will be briefly described, and then the technical matters to be made differently from the prior art will be described.

First of all, Korean Patent No. 0815203 (2008.03.13.) Relates to a detection plate for detecting a weight of a vehicle, and more particularly, to avoid over-cracking avoidance caused by illegal entry of a vehicle, and according to a temperature change value. The present invention relates to a detection plate for a vehicle repeater that enables more accurate weighing through calibration.

The prior art eliminates the separation between left and right detection plates, and eliminates the deviation of the deviation due to the unloading load that may be generated by the length of the left and right detection plates in the step of installing the strain gauge on the detection plate, thereby avoiding the excessive interruption caused by the illegal entry of the vehicle. It is possible to prevent the damage, and to maintain the equilibrium of the Wheatstone bridge by changing the correction resistance according to the change of the ambient temperature, thereby providing the effect of increasing the accuracy of the weight measurement. There is some similarity to the vehicle weighing configuration using the strain gauge of the present invention in terms of.

However, although the present invention proposes a structural feature for efficiently transferring the load of the vehicle to be measured to the strain gauge and a technical configuration to increase the output sensitivity by configuring the strain gauge in various types of half bridge circuits, Since the technology simply describes a configuration that prevents overload prevention, the difference in technical features is obvious.

In addition, Korean Patent Laid-Open Publication No. 2009-0003408 (2009.04.13.) Makes a load cell in which a strain gauge is attached to an elastic body, multiplexes it in parallel, and molds it with an elastic body, thereby distributing a place where loads of force or vibration are severely distributed. The present invention relates to the fabrication of parallel multiple load cells and the development of measuring means using them for the development of sensors for moving load measuring devices, axle lifters and sensors for rolling tension measuring devices.

The prior art is easy to manufacture a load cell of medium and large capacity while filling the upper and lower middle with a material such as rubber having the characteristics of an elastic body, so as to buffer the measurement of the measurement object that generates a lot of mechanical shock or vibration, the durability of the load cell The strain gauge of the present invention provides an effect that can be applied to various fields in the industry by using a parallel multiple load cell which has an effect of improving and extending the life and having the function of the load cell even when the force load is distributed. There is some similarity to the configuration to measure the weight of the vehicle.

However, the prior art only refers to the technical configuration for measuring the weight of the vehicle through the bending phenomenon, structural features and strain for efficiently transferring the load of the measurement target vehicle proposed in the present invention to the strain gauge It does not describe or suggest technical features that increase the output sensitivity by constructing a bridge circuit including gauges of various types of half bridges, full bridges, or a combination thereof.

In addition, Korean Utility Model Publication No. 2010-0007790 (2010.08.02.) Relates to a weighing apparatus for a truck using a strain gauge, and more particularly to a weighing apparatus with improved power efficiency and economic efficiency.

The prior art is to configure the parallel bridge circuit and multiplexer to reduce the power consumption, to reduce the number of components to provide the effect of providing a simpler and cheaper circuit, the strain gauge to measure the weight of the truck In this respect, there is some similarity to the configuration of measuring the weight of the vehicle using the strain gauge of the present invention.

However, the prior art is to efficiently transfer the load of the measurement target vehicle proposed in the present invention to the strain gauge to narrow the width between the strain gauge to solve the structural problem that the load of the vehicle is not properly transmitted There is no mention or suggestion of.

That is, each of the above-mentioned prior arts proposes a technical configuration for measuring the weight of a vehicle using a strain gauge, but a conventional structure in which the load between the wheels of the vehicle is not properly transmitted due to the narrow width between the strain gauges. There is no description or suggestion on the technical characteristics of the strain gage as a bridge circuit including various types of half bridges, full bridges, or a combination thereof in order to improve the technical characteristics and output sensitivity. The difference is clear.

The present invention was created to solve the above problems, by efficiently transmitting the load of the vehicle to the strain gauge, the width between the strain gauges used for weighing the vehicle is narrow structure that does not transmit the load of the vehicle properly It is an object of the present invention to provide a vehicle weighing apparatus and a method using a strain gauge that can solve the problem.

The present invention also provides a vehicle weighing apparatus using a strain gauge that can accurately measure the weight of the vehicle by increasing the output sensitivity by configuring the strain gauge used for weighing the vehicle in various bridge circuits and its It is another object to provide a method.

In addition, another object of the present invention is to provide a vehicle weighing apparatus using a strain gauge and a method thereof, which minimizes the range of the road surface or the damage range for constructing a weight lifter and can easily perform maintenance. .

Weighing apparatus according to an embodiment of the present invention, the upper plate for transmitting the load of the weighing target vehicle; A sensor plate receiving the load of the vehicle from the upper plate; And a pit frame having a support on the bottom at a predetermined interval and supporting the sensor plate through the support, wherein the top plate, the sensor plate, the support of the pit frame, or a combination thereof are fastened by a coupling bolt. It is characterized in that it is assembled.

The weighing apparatus may further include a load transfer member provided between the top plate and the sensor plate to transfer the load of the top plate to the sensor plate, or bolt the top plate and the sensor plate. It is characterized in that the load transfer.

In addition, the sensor plate is formed at least one or more incisions partially cut from the outside to the center portion, and through the load transfer member to transfer the load of the upper plate to the cutout of the sensor plate to bend by the load of the vehicle To measure the weight to the degree of bending.

The pit frame may accommodate the upper plate and the sensor plate in an inner space, and install the inside of the road so that the upper surface of the upper plate and the road surface coincide with each other.

In addition, the pit frame is characterized in that the support is arranged so that the cutout of the sensor plate is located in the space between the support when the support is provided at a predetermined interval on the floor.

In addition, the weighing apparatus according to an embodiment of the present invention, the sensor plate for receiving the load of the vehicle; And a strain gauge attached to a portion of the sensor plate, wherein the sensor plate forms at least one cut portion partially cut from the outside to the center portion, and receives a load of the vehicle and transfers the cut portion to the cut portion of the sensor plate. It is characterized by measuring the weight by detecting the degree of bending by the load of the vehicle to be an electrical signal.

The strain gauge is attached to the cutout top plate and constitutes a bridge circuit including a strain gauge of an adjacent cutout and a half bridge, a full bridge, or a combination thereof, the strain gauge of the adjacent cutout being horizontal in the horizontal direction. It is characterized by comprising a circuit.

In addition, the strain gauge outputs an electrical signal detecting the degree of bending of the sensor plate to an electrically connected management server, calculates the weight based on the electrical signal measured by the strain gauge in the management server and then the calculation It is characterized by checking whether or not the weight of the vehicle to be weighed by matching a weight with data related to previously stored vehicle information.

In addition, the weighing device, the top plate for transmitting the load of the weighing target vehicle; And a support frame provided at a predetermined interval on the bottom and supporting the sensor plate through the support, wherein the upper plate, sensor plate, support of the pit frame, or a combination thereof is fastened with a coupling bolt. It is characterized in that the assembly.

In addition, the weighing method according to an embodiment of the present invention, the load of the measurement target vehicle from at least one strain gauge provided in the sensor plate receives the load of the vehicle from the upper plate for transmitting the load of the weighing target vehicle Detecting the degree to which the sensor plate is bent by an electrical signal; And calculating the load of the vehicle to be weighed by applying the detected electrical signal to the bridge circuit composed of a combination of the strain gauges.

In addition, the strain gauge is attached to a portion of the sensor plate receiving the load of the vehicle, the sensor plate is formed at least one or more incision cut in part from the outside to the center portion, the detecting step, the load of the vehicle It is characterized in that the degree of bending by the load of the vehicle transmitted to the cutout of the sensor plate to receive the electric signal.

The strain gauge is attached to the cutout top plate and constitutes a bridge circuit including a strain gauge of an adjacent cutout and a half bridge, a full bridge, or a combination thereof, the strain gauge of the adjacent cutout being horizontal in the horizontal direction. It is characterized by comprising a circuit.

The weighing method may further include: outputting an electrical signal detecting a degree of bending of the sensor plate to an electrically connected management server; And calculating, by the management server, a weight based on the electrical signal measured by the strain gauge, and matching the calculated weight with data related to previously stored vehicle information, to determine whether the vehicle to be weighed is weighed. It characterized in that it further comprises.

As described above, according to the vehicle weighing apparatus and the method using the strain gauge of the present invention, conventional vehicle weight measurement because the load of the moving vehicle is accurately transmitted to the strain gauge while preventing the vehicle from entering illegally for overload avoidance Due to the narrow width between the strain gauges used in the vehicle can solve the structural problem that the load of the vehicle is not properly transmitted, thereby reducing the error and error of the vehicle weighing significantly.

In addition, the present invention has the effect of precisely weighing the vehicle because a plurality of strain gauges used for weighing the vehicle can be configured with various types of bridge circuits to increase the output sensitivity.

In addition, the present invention can minimize the range or damage range of the road surface for building a weight lifter, there is an effect that can be easily performed maintenance in case of damage to the strain gauge.

1 is a conceptual diagram illustrating a weighing process for a vehicle using a strain gauge to which the present invention is applied.
2 is a view showing a state of assembling a vehicle weighing apparatus using a strain gauge according to an embodiment of the present invention.
3 is an exploded perspective view of the weighing apparatus of FIG. 2.
4 is a view for explaining the structure of the upper plate of Figure 3 in detail.
5 is a view for explaining the structure of the sensor plate of Figure 3 in detail.
6 is a view for explaining the structure of the pit frame of FIG.
FIG. 7 is a diagram illustrating the configuration of the management server of FIG. 1 in more detail.
FIG. 8 is a diagram illustrating a bridge (eg, half) circuit connection of a strain gauge in the weighing apparatus of FIG. 1.
9 is a flow chart illustrating in more detail the operation of the vehicle weighing method using a strain gauge according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the vehicle weighing apparatus and method using the strain gauge of the present invention. Like reference numerals in the drawings denote like elements. In addition, specific structural to functional descriptions of the embodiments of the present invention are only illustrated for the purpose of describing the embodiments according to the present invention, and unless otherwise defined, all terms used herein including technical or scientific terms These have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and are not construed in ideal or excessively formal meanings unless expressly defined herein. It is preferable not to.

1 is a conceptual diagram illustrating a weighing process for a vehicle using a strain gauge to which the present invention is applied.

As shown in FIG. 1, the vehicle weighing apparatus using the strain gauge of the present invention includes a weighing apparatus 100 embedded in the ground to measure the weight of the vehicle, and a camera 200 photographing the vehicle to be weighed. It may be configured to include a management server 300 for checking whether the vehicle to be weighed on the basis of the measurement value input from the weighing apparatus 100. In addition, the present invention may further include a manager terminal 400 that receives information about the overload vehicle from the management server 300, and a central control center 500 that remotely controls the operation of the management server 300. Can be.

The weighing apparatus 100 is installed inside the road according to the axial direction of the traveling direction of the vehicle, detects the weight of the moving vehicle in real time, and transmits a detection signal to the management server 300, the management server 300 Determines whether the vehicle is overloaded based on the detection signal.

At this time, the weighing apparatus 100 is installed inside the ground cut to fit the size of the weighing apparatus 100, by using a strain gauge for the load of the vehicle transmitted through the upper plate located on the same plane as the ground After converting the electrical signal to the management server 300 to be able to measure the weight of the vehicle. The structure and specific operation of the weighing apparatus 100 will be described in more detail with reference to FIGS. 2 to 6 below.

The weighing apparatus 100 is installed to cover the entire road surface in order to prevent unauthorized entry of the moving vehicle by being stuck to the wall or the outside at the measurement position for avoiding overload, and even if only one is installed, it is sufficient to weigh the vehicle. Of course, it can be carried out, but it can be installed more than one depending on the location or scale of installation.

In addition, the weighing apparatus 100 performs a waterproofing treatment, so that rainwater or the like flows into the interior due to an outdoor environment, thereby preventing malfunction or damage to components provided therein. And when the parts or elements provided therein are damaged, the manager can release the top plate of the weighing device 100, replace the internal parts or elements, and then combine the top plate again to perform maintenance very easily. can do.

The camera 200 transmits the image of the vehicle to be weighed to the management server 300 to recognize the number or the model of the vehicle.

The management server 300 checks the weight of the vehicle based on the detection signal transmitted from the weighing apparatus 100, checks the type or number of the vehicle based on the image transmitted from the camera 200, and Check whether the vehicle is overloaded using the weight of the vehicle and the vehicle information. That is, by comparing the weight calculated according to the detection signal received from the weighing apparatus 100 with the overload information according to the type of the vehicle to determine whether the overload.

At this time, the management server 300 is connected to the weighing apparatus 100 and the camera 200 by wire or via the cable, the Internet, Bluetooth (beacon), beacon (beacon), RFID (Radio Frequency Identification), Zigbee ( Zigbee), Wi-Fi (WiFi), etc. can be connected wirelessly.

The manager terminal 400 is a terminal such as a smartphone, a tablet, etc. held by an administrator who performs an overload vehicle, and receives information about the overloaded vehicle from the management server 300 to perform the overload vehicle.

The central control server 500 is connected to the management server 300 through a network, and controls the operation of the management server 300 from a remote location, or of various programs related to the operation or operation of the management server 300. Handle provision and updates.

2 is a view illustrating a state in which a vehicle weighing apparatus is assembled using a strain gauge according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of the weighing apparatus of FIG. 2, and FIGS. 4 to 6 are FIGS. The detailed structure of the top plate, sensor plate, and pit frame is shown.

2 to 6, the weighing apparatus 100 of the present invention includes a top plate 110, a sensor plate 120, a strain gauge 130, a pit frame 150, and a first coupling bolt ( 160, the second coupling bolt 170, and the like.

The upper plate 110 performs a function of transmitting the load of the moving weighing target vehicle to the sensor plate 120 provided below.

In this case, the upper plate 110 is located at the top of the pit frame 150 embedded in the ground and forms the same line as the ground, and passes through the sensor plate 120 by the plurality of first coupling bolts 160. 150). That is, a plurality of first coupling bolts 160 are fastened to the pit frame 150 via the first through holes 111 of the upper plate 110 and the second through holes 121 of the sensor plate 120. It is coupled to the groove 152 and fixed.

The sensor plate 120 is provided under the upper plate 110 and receives a load of the vehicle from the upper plate 110 through the first coupling bolt 160. In this case, the sensor plate 120 is generally formed of a metal material, but may be formed of an elastic body so that the bending phenomenon may be smoothly performed by the load of the vehicle transmitted from the upper plate 110.

In addition, the upper portion of the sensor plate 120 as shown in Figure 5 a plurality of strains for detecting the degree of bending of the sensor plate 120 due to the load of the vehicle as an electrical signal (that is, an electrical signal according to the resistance change) At least one gauge 130 is attached at predetermined intervals.

In addition, the sensor plate 120 forms at least one cutout portion 124 partially cut from the outside to the center portion, and the strain gauge 130 is attached to the top of the cutout portion 124.

That is, the cutout 124 is a structure partially cut from the outside to the center portion as shown in FIGS. 3 and 5, since the first coupling bolt 160 is disposed at the center portion of the cutout 124. When the load of the vehicle is transmitted through the first coupling bolt 160 to the cutout 124, the corresponding portion may be smoothly bent downward due to the cutout 124, and thus the cutout 124. In the strain gauge 130 attached to the upper plate it is possible to easily detect the electrical signal for the degree of bending of the incision 124.

The configuration of the sensor plate 120 including the cutout 124 as described above is one of the characteristic configurations proposed by the present invention together with the attachment method of the strain gauge 130, and the sensor plate (by the weight of the vehicle to be weighed) The degree of bending of the cutout portion 124 of the 120 may be accurately sensed by the strain gauge 130, thereby increasing the efficiency of weighing the vehicle.

In addition, the sensor plate 120 is provided in the pit frame 150 embedded in the ground, and is fixed to the pit frame 150 by a plurality of second coupling bolts 170. That is, the plurality of second coupling bolts 170 are coupled to and fixed to the fourth fastening groove 153 of the pit frame 150 through the third through holes 122 of the sensor plate 110.

Strain gauge 130 is attached to the upper surface of the sensor plate 120 at a predetermined interval, the sensor plate 120 due to the load of the vehicle transmitted from the upper plate 110 through the first coupling bolt 160. ) The degree of warpage is detected as an electrical signal, and outputs the detected electrical signal to the management server (300). Accordingly, the management server 300 may calculate the weight based on the electric signal measured by the strain gauge 130, and compare the calculated weight with the corresponding vehicle information to check whether the overload.

More specifically, the strain gauge 130 is provided on the upper plate of at least one or more cutouts 124 partially cut from the outside of the sensor plate 120 to the center portion as shown in FIG. 5, and adjacent cutouts ( A strain gauge 130 and a bridge (eg, half) circuit of the 124 is configured. The full bridge circuit may be configured instead of the half bridge circuit, and the present invention includes a half bridge circuit and a full bridge circuit.

For example, when configuring the half bridge circuit, the strain gauge 130 of the adjacent cutout 124 may configure the half bridge circuit in the horizontal direction (see FIG. 8). Of course, it is also possible to use a full bridge circuit.

On the other hand, in addition to the method of measuring the weight of the vehicle based on the electrical signal received from the strain gauge 130 formed the bridge circuit in the management server 300 as described above, the plurality of strain gauges in the management server 300 When an electrical signal is received from the 130 according to the degree of bending of the sensor plate 120 due to the load of the vehicle, a bridge circuit is formed in software via a programmable logic controller function and then the weight of the vehicle. You can also apply the method of measuring.

For example, when a plurality of strain gages 130 provided in the weighing apparatus 100 measure information (ie, electrical signals according to resistance change) of a moving vehicle and transmit the measured information to the management server 300, The management server 300 forms a bridge circuit in the horizontal direction with a plurality of strain gauges 130 having an optimal output sensitivity in software, and then checks whether the vehicle is overloaded by measuring the weight of the vehicle. In this case, when the software logic for forming the bridge circuit is provided in the weighing apparatus 100, the weighing apparatus 100 may directly process the weighing apparatus 100 instead of the management server 300.

The load transfer member 140 performs a function of transmitting a load when the vehicle passes through the upper plate 110 to the sensor plate 120, and between the upper plate 110 and the sensor plate 120. It is provided with a plurality. More specifically, the first coupling bolt 160 is disposed one by one in the cutout 124 formed on the sensor plate 120.

The pit frame 150 is formed in a hollow shape and embedded in the ground, and the sensor plate 120 and the upper plate 110 are sequentially received in the inner space from the bottom. At this time, the upper surface and the road surface of the upper plate 110 maintains the same line.

In addition, the pit frame 150 is provided with a support 151 at a predetermined interval on the bottom surface, the third coupling groove 152 and the second coupling to which the first coupling bolt 160 is fastened to the support 151. The fourth fastening groove 153 to which the bolt 170 is fastened is formed.

The support 151 is provided with a plurality of at a predetermined interval on the floor, and serves to support the sensor plate 120. In this case, when the support 151 is provided at a predetermined interval on the floor, a portion where the cutout 124 and the strain gauge 130 of the sensor plate 120 are attached to the empty space between the support 151 is attached. To be located.

That is, the cutout 124 formed in the sensor plate 120 is disposed in the space between the supports 151 of the pit frame 150, and thus, from the upper plate 110 through the first coupling bolt 160. The incision 124 of the sensor plate 120 is transmitted to the lower portion in the space between the support 151 by the load of the vehicle to be transmitted so as not to interfere.

The first coupling bolt 160 mainly uses a conventional hex bolt, and fixes the upper plate 110, the sensor plate 120 and the pit frame 150 by combining.

Like the first coupling bolt 160, the second coupling bolt 170 mainly uses a countersunk head bolt, and serves to couple and fix the sensor plate 120 and the pit frame 150.

On the other hand, Figure 7 is a view showing in more detail the configuration of the management server of FIG.

As shown in FIG. 7, the management server 300 includes a communication interface 310, a vehicle information checking unit 320, a weight detector 330, an overload checking unit 340, a notification unit 350, and storage. The part 360 is comprised.

The communication interface 310 receives an electrical signal detected by the strain gauge 130 from the weighing apparatus 100 connected by wire or wirelessly and outputs the electrical signal to the weight detector 330, and outputs the vehicle from the camera 200. Receives the received image information and outputs to the vehicle information verification unit 320.

In addition, the communication interface 310 transmits the overload vehicle information provided from the notification unit 350 to the manager terminal 400 through a network so that the manager terminal 400 checks the overload information to perform the enforcement. .

In addition, the communication interface 310 performs a communication connection with the central control center 500 through a network, so as to control the operation of the management server 300 in the central control center 500 at a remote location.

The vehicle information checking unit 320 checks the number or type of the weighing target vehicle based on the image photographed by the camera 200 received through the communication interface unit 310, and checks the result of the overload checking unit 340. To provide.

The weight detector 330 checks the weight of the vehicle based on the electrical signal received from the weighing device 100 through the communication interface 310, and provides the checked weight information to the overload checker 340. .

The overload confirmation unit 340 checks whether the vehicle is overloaded by using the vehicle information received from the vehicle information confirmer 320 and the weight information of the vehicle received from the weight detector 330. In other words, the weight calculated according to the detection signal received from the weighing apparatus 100 is compared with the overload information according to the type of the vehicle to check whether the overload.

The notification unit 350 checks that the vehicle is in an overloaded state as a result of the checking of the overload confirmation unit 340, and provides the overload information of the vehicle to the manager terminal 300 through the communication interface 310 to control the enforcement. To be done.

The storage unit 360 is a program for recognizing the vehicle number and type from the image data photographed by the camera 200 in the vehicle information checking unit 320, the weight detection unit 330 of the weighing apparatus 100 The program for measuring the weight of the vehicle based on the electrical signal detected by the strain gauge 130, and stores and manages the program for the operation of the management server 300.

Next, an embodiment of a vehicle weighing method using a strain gauge according to the present invention configured as described above will be described in detail with reference to FIGS. 8 and 9.

8 is a view illustrating a half bridge circuit connection of a strain gauge in the weighing apparatus of FIG. 1, and FIG. 9 is a detailed view illustrating an operation process of a vehicle weighing method using a strain gauge according to an embodiment of the present invention. The flowchart shown.

First, the weighing apparatus 100 for controlling the overload vehicle on the operator side is installed at a predetermined position, and then power is applied to prepare for driving (S100).

When the vehicle to be weighed passes through the weighing device 100, at least one strain gauge provided in the sensor plate 120 to receive the load of the vehicle from the top plate 110 that transmits the load of the vehicle to be weighed. In operation 130, the sensor plate 120 is bent by the load of the measurement target vehicle as an electric signal.

In this case, the strain gauge 130 is attached to a part of the sensor plate 120 that receives the load of the vehicle, and the sensor plate 120 has at least one cutout part 124 partially cut from the outside to the center part. Forming.

Accordingly, the strain gauge 130 receives the load of the vehicle and detects the degree of bending by the load of the vehicle transmitted to the cutout 124 of the sensor plate 120 as an electric signal.

In addition, the strain gauge 130 is attached to the upper plate of the cutout 124, and is connected to the strain gauge 130 of the adjacent cutout 124 to form a bridge circuit including a half bridge, a full bridge, or a combination thereof. do. For example, as shown in FIG. 8, the strain gauges respectively attached to the upper plates of adjacent cutouts 124 may be paired in the horizontal direction to form the bridge circuit.

After detecting the degree to which the sensor plate 120 is bent in the strain gauge 130 through the step S200 as an electrical signal, the management server 300 is detected in the bridge circuit composed of a combination of the strain gauge 130 The load of the vehicle to be weighed is calculated by applying one electric signal (S300).

Thereafter, the management server 300 checks whether the overweight of the weighing target vehicle is matched by matching the weight of the corresponding weighing target vehicle calculated in the step S300 with data related to the overload information for each vehicle previously stored (S400).

In addition, the management server 300 provides the result of the overload confirmed in step S400 to the manager terminal 400 through the network (S500) to perform the cracking of the overload vehicle.

Meanwhile, in the present invention, the weight of the vehicle is measured by the management server 300 based on the electrical signal received from the strain gauge 130 having the bridge circuit as described above. The electrical signal received from the strain gauge 130 may be processed by the management server 300 by software to form a bridge circuit in various forms, and then a method of measuring the weight of the vehicle may be applied.

Next, a description will be given of the installation method of the weighing apparatus 100 according to an embodiment of the present invention configured as described above. At this time, the installation order of the weighing apparatus 100 may be changed by the use environment or by those skilled in the art.

First, the ground is cut to fit the size of the pit frame 150, and the pit frame 150 is installed in the cut space.

The sensor plate 120 is mounted on the pit frame 150 with a plurality of strain gauges 130 attached thereto, and then the sensor plate 120 and the pit are mounted using a second coupling bolt 170. The frame 150 is fixed.

At this time, when the sensor plate 120 is mounted on the pit frame 150, the cutout 124 formed in the sensor plate 120 is located in a space between the supports 151 of the pit frame 150. It is important to place.

After the upper plate 110 is positioned above the sensor plate 120, the upper plate 110, the sensor plate 120, and the pit frame 150 are connected to each other using a first coupling bolt 160. Fix it and finish the installation work.

As described above, the present invention accurately transfers the load of the moving vehicle to the strain gauge, so that the width between the strain gauges is narrow, as in the prior art, so as to solve a structural problem in which the load of the vehicle is not properly transmitted. And errors can be significantly reduced.

In addition, the present invention can improve the output sensitivity by configuring a plurality of strain gauges used for the weighing of the vehicle by a bridge circuit of various types to improve the accuracy of the weighing of the vehicle.

In addition, the present invention can minimize the extent of the road surface or damage range for building a weight lifter, and can easily perform maintenance.

Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely exemplary, and various modifications and equivalent other embodiments are possible for those skilled in the art to which the art pertains. I will understand the point. Therefore, the technical protection scope of the present invention will be determined by the claims below.

100: weighing apparatus 110: top plate
120: sensor plate 130: strain gauge
150: fit frame 160: first coupling bolt
170: second coupling bolt 200: camera
300: management server 310: communication interface unit
320: vehicle information check unit 330: weight detection unit
340: overload confirmation unit 350: notification unit
360: storage 400: manager terminal
500: central control server

Claims (17)

A top plate for transferring a load of the vehicle to be weighed;
A sensor plate receiving the load of the vehicle from the upper plate; And
And a support frame provided on the bottom at a predetermined interval and supporting the sensor plate through the support.
Supports of the upper plate, sensor plate and pit frame are assembled by fastening with a first coupling bolt,
The load of the vehicle passing through the upper plate through the first coupling bolt is transmitted to the sensor plate,
The sensor plate is formed with at least one incision partially cut from the outside to the center portion, the first coupling bolt is penetrated through the center portion of the incision portion, the strain gauge is attached to the upper plate of the incision portion By transmitting the load of the vehicle passing through the upper plate to the incision through the first coupling bolt to bend the incision by the load of the vehicle to detect the degree of bending of the incision in the strain gauge by an electrical signal Weighing apparatus, characterized in that to be used for weighing the vehicle. delete delete The method according to claim 1,
The top plate is,
Weighing apparatus, characterized in that the upper surface and the road surface is embedded in the ground to keep the same line. The method according to claim 1,
The pit frame,
When the support is provided at a predetermined interval on the bottom surface, the weighing apparatus is disposed so that the cutout of the sensor plate is located in the space between the support. A sensor plate receiving the load of the vehicle; And
And a strain gauge attached to a portion of the sensor plate.
The sensor plate forms at least one or more cutouts partially cut from the outside to the center portion, and a first coupling bolt for passing the load of the vehicle to the sensor plate is coupled through the center portion of the cutout portion. The strain gauge is attached to the upper plate of the cutout, and the load of the vehicle is transferred to the cutout through the first coupling bolt to bend the cutout by the load of the vehicle to thereby bend the cut in the strain gauge. Weighing apparatus, characterized in that for detecting the electric signal to be used for weighing the vehicle. The method according to claim 6,
The strain gauge,
A weighing apparatus, comprising a bridge circuit including a half bridge, a full bridge, or a combination thereof in a horizontal pair with a strain gauge attached to an upper plate of an adjacent incision. The method according to claim 6,
The strain gauge,
Outputting an electrical signal detecting the degree of bending of the cutout formed in the sensor plate to a management server,
The management server calculates the weight based on the electrical signal measured by the strain gauge and then matches the calculated weight with the data related to the information on each vehicle overload previously stored to check whether the overweight of the weighing target vehicle Weighing apparatus. The method according to claim 6,
The weighing device,
A top plate for transferring a load of the vehicle to be weighed; And
A support frame is provided at a predetermined interval on the bottom, and the pit frame for supporting the sensor plate through the support;
The support plate of the upper plate, the sensor plate and the pit frame is fastened to the first coupling bolt assembly, characterized in that assembled. delete delete The method according to claim 9,
The top plate is,
Weighing apparatus, characterized in that the upper surface and the road surface is embedded in the ground to keep the same line. The method according to claim 9,
The pit frame,
When the support is provided at a predetermined interval on the bottom surface, the weighing apparatus is disposed so that the cutout of the sensor plate is located in the space between the support. Detecting, by an electric signal, the degree to which the sensor plate is bent by the load of the vehicle in at least one strain gauge provided in the sensor plate receiving the load of the vehicle from the upper plate transferring the load of the vehicle to be weighed;
Outputting the detected electrical signal to a management server; And
Calculating weight based on the electrical signal measured by the strain gauge in the management server, and then matching the calculated weight with data related to previously stored vehicle information, and checking whether the vehicle to be weighed is overloaded. Include,
The sensor plate is formed with at least one cutout partially cut from the outside to the center portion, the first coupling bolt for transmitting the load of the vehicle to the sensor plate through the center portion of the cutout is coupled through, The strain gauge is attached to the upper plate of the incision,
The detecting may include transmitting the load of the vehicle to the cutout through the first coupling bolt to bend the cutout by the load of the vehicle to detect the degree of bending of the cutout in the strain gauge as an electric signal. Weighing method, characterized in that to be used for weighing the vehicle. delete The method according to claim 14,
The strain gauge,
It is attached in pairs to the top plate of the incision,
And a pair of horizontally coupled strain gauges of adjacent incisions to form a bridge circuit comprising a half bridge, a full bridge, or a combination thereof. delete

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