KR102500425B1 - Method and system for measuring a volume of aggregate loaded in a truck - Google Patents

Abstract

The present invention relates to a method for measuring an aggregate volume in a truck loading state, comprising: storing first scan data obtained by scanning a vehicle loaded with aggregate by a sensor; storing second scan data obtained by scanning the vehicle from which the aggregate is emptied by the sensor; Extracting aggregate data based on the stored first scan data and second scan data; and calculating the volume of the aggregate loaded in the vehicle from the extracted aggregate data.

Description

Method for measuring the volume of aggregate in truck loading condition {METHOD AND SYSTEM FOR MEASURING A VOLUME OF AGGREGATE LOADED IN A TRUCK}

The present invention relates to a method for measuring the volume of aggregate, and more particularly, to a method for measuring the volume of aggregate in a truck-loaded state.

In general, in a place where goods are loaded into a vehicle (eg, a truck or a truck), the total weight of the vehicle is measured by adding the weight of the vehicle and the weight of the vehicle.

On the other hand, the aggregate (or building material) transported through the vehicle does not form a certain shape, so it is necessary to go through a cumbersome procedure of measuring the weight or volume of the aggregate after unloading it from the vehicle and then putting it in a separate container.

According to the prior art, Korean Patent Registration Publication No. 10-1760312 "cargo loading state detection system for road traffic safety service" irradiates a laser slit to a cargo loading object, detects the position of the slit through a camera image, and determines the height in a triangular manner. An overload management system has been disclosed that calculates and generates camera images and three-dimensional data to measure the height, width, and volume of cargo according to vehicle passage. However, since the sizes and structures of each vehicle vary, it is difficult to accurately measure the volume or weight of only the aggregate loaded in the vehicle even by the above method.

[Document 1] Korean Patent Registration Publication No. 10-1760312 Cargo Loading State Detection System for Road Traffic Safety Service 2017.07.17

Accordingly, an object of the present invention is a method for measuring the volume of aggregate loaded in a truck based on data sensed when the vehicle exits and enters the vehicle, and a method for measuring the volume of aggregate loaded in a truck, which performs the same. It is to provide a measurement system and an aggregate management system.

To achieve the above object, a method for measuring aggregate volume in a truck loading state of the present invention includes the steps of: storing first scan data obtained by scanning a vehicle loaded with aggregate by a sensor; storing second scan data obtained by scanning the vehicle from which the aggregate is emptied by the sensor; Extracting aggregate data based on the stored first scan data and second scan data; and calculating the volume of the aggregate loaded in the vehicle from the extracted aggregate data.

Preferably, the sensor includes a laser measurement sensor.

Preferably, the method further includes adjusting a range of vertices included in the first scan data and the second scan data by using a range filter.

Preferably, the method further includes identifying at least two vertices from the vertices included in the first scan data and the second scan data.

Preferably, the method further includes aligning coordinates of the first scan data and the second scan data based on the identified at least two vertices.

Preferably, the method comprises: combining the extracted aggregate data and aggregate box data; and calculating a volume based on the combined data.

Preferably, the method for calculating the volume is characterized in that it is calculated by an alpha shape.

An aggregate volume measurement system in a truck loading state of the present invention for achieving the above object includes a laser measurement sensor (LMS) device; and storing the first scan data of scanning the vehicle loaded with aggregate and the second scan data of scanning the vehicle empty of aggregate from the LMS device in a database, and storing the aggregate material based on the stored first and second scan data. and a management server that extracts data and calculates the volume of the aggregate loaded in the vehicle from the extracted aggregate data.

Preferably, the system further includes at least one touch panel for inputting information related to the vehicle.

Preferably, the information related to the vehicle includes at least one of a vehicle number, a vehicle type, and an aggregate type.

Preferably, the system further includes at least one camera for taking pictures related to the vehicle or the aggregate loaded on the vehicle.

Preferably, the camera includes: a first camera for photographing an upper surface of the vehicle; and a second camera for photographing the front of the vehicle or the rear of the vehicle.

Preferably, the management server adjusts a range of vertices included in the first scan data and the second scan data by a range filter, identifies at least two vertices from the vertices, and Based on the identified at least two vertices, coordinates of the first scan data and the second scan data may be aligned with each other.

Preferably, the management server combines the extracted aggregate data and aggregate box data, and calculates the volume based on the combined data.

According to the present invention, by measuring the volume of aggregate loaded in the vehicle based on the data sensed by the LMS when entering and exiting the vehicle, the volume of the aggregate can be accurately and effectively estimated even when the aggregate is loaded in the vehicle. there is.

In addition, there is an advantage in that the aggregate volume can be effectively measured without a separate operation for measuring the volume of the aggregate by automatically measuring the volume of the aggregate when entering and exiting the vehicle.

1 is a view showing an aggregate volume measurement system in a truck loading state according to the present invention.
2 is a block diagram showing detailed structures of a management server and a database according to an embodiment of the present invention.
3 is a flowchart illustrating a procedure for entering a vehicle according to an embodiment of the present invention.
4 is a flowchart illustrating a procedure when leaving a vehicle according to an embodiment of the present invention.
5 is a flowchart illustrating a procedure for measuring aggregate volume in a truck loading state according to an embodiment of the present invention.
6 is a diagram showing a measurement concept at the time of entering the aggregate volume measurement system in a truck loading state according to an embodiment of the present invention.
7 is a diagram showing a concept of measurement when unloading an aggregate volume measurement system in a truck loading state according to an embodiment of the present invention.
8 is an exemplary view showing a setting program for a servo motor according to an embodiment of the present invention.
9 is a diagram showing the concept of a measurement method by an LMS device according to an embodiment of the present invention.
10 is a diagram illustrating a scanning method according to rotation of a servo motor according to an embodiment of the present invention.
11A is a diagram illustrating a measurement distance according to rotation of an LMS device according to an embodiment of the present invention.
11B is a diagram illustrating a difference in a measurement distance according to rotation of an LMS device according to an embodiment of the present invention.
11C is a diagram showing a result of applying a rotation value according to rotation of an LMS device according to an embodiment of the present invention.
12A is a diagram illustrating data before applying rotation of measured values according to an embodiment of the present invention.
12B is a diagram illustrating data after rotation of measured values is applied according to an embodiment of the present invention.
13A is a view showing a photograph of a vehicle loaded with aggregates taken when entering a vehicle according to an embodiment of the present invention.
13B is a view showing a picture of a vehicle from which aggregates are emptied, taken when leaving a vehicle according to an embodiment of the present invention.
14A is a diagram showing data before applying a range filter according to an embodiment of the present invention.
14B is a diagram showing data after applying a range filter according to an embodiment of the present invention.
15A is a diagram showing a result of detecting a corner point according to an embodiment of the present invention.
15B is a diagram illustrating data in which rotation directions are aligned according to an embodiment of the present invention.
16 is a diagram showing a result of extracting aggregate data by comparing scan data according to an embodiment of the present invention.
17 is a diagram showing the result of merging aggregate data and aggregate box data according to an embodiment of the present invention.
18 is a diagram illustrating a method of measuring a volume using an alpha shape algorithm according to an embodiment of the present invention.
19 is a diagram illustrating data obtained by measuring a volume using an alpha shape algorithm according to an embodiment of the present invention.
20a to 20e are diagrams showing an aggregate volume management screen according to an embodiment of the present invention.

Hereinafter, specific details for carrying out the present invention will be described based on embodiments with reference to the drawings. These embodiments are described in sufficient detail to enable any person skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the present invention in relation to one embodiment. Additionally, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the detailed description set forth below is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all equivalents as claimed by those claims. Like reference numbers in the drawings indicate the same or similar function throughout the various aspects.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification can be used in a meaning that can be commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless explicitly specifically defined.

An embodiment of the present invention is a method for measuring the volume of aggregate (or building material) loaded in a vehicle (or truck) based on data sensed at the time of exit and entry, and A truck loaded aggregate volume measurement system that performs, and an aggregate management system are proposed.

According to an embodiment of the present invention, in the description to be described later, it is assumed that the aggregate is loaded when the vehicle (eg, truck) is entered, and the aggregate is emptied when the vehicle is exited. However, the present invention is not limited thereto. For example, according to another embodiment, the present invention may be applied by assuming that the aggregate is emptied when the vehicle is entered and the aggregate is loaded when the vehicle is exited.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily practice the present invention.

1 is a view showing an aggregate volume measurement system in a truck loading state according to the present invention. Referring to FIG. 1, the system according to the present invention includes a management server 110, a database 111, a communication network 120, a laser measurement sensor (LMS) device 130, an input/output device 140, and a closed circuit (CCTV). television) 150. The database 111 may be included in the management server 110 and configured.

The communication network 120 may include, for example, at least one of LTE, LTE-A, CDMA, WCDMA, UMTS, WiBro, 5G, or GSM as a cellular communication protocol. In addition, the communication network 120 may be configured regardless of its communication mode, such as wired and wireless, and may include a personal area network (PAN), a local area network (LAN), and a metropolitan area network (MAN; It may be composed of various communication networks such as a Metropolitan Area Network) and a Wide Area Network (WAN). In addition, the communication network 120 may be the known World Wide Web (WWW), and use a wireless transmission technology used for short-range communication such as Infrared Data Association (IrDA) or Bluetooth. may be According to an embodiment of the present invention, the communication network 120 may be configured to transmit and receive data to each other through a TCP/IP communication protocol.

The LMS device 130 includes at least one sensor, for example, a laser measurement sensor, and transmits first scan data obtained by scanning a vehicle loaded with aggregate by the sensor to the management server 110 through the communication network 120. send. In addition, the LMS device 130 transmits second scan data obtained by scanning the vehicle from which the aggregate is emptied by the sensor to the management server 110 through the communication network 120 . The management server 110 stores the first scan data and the second scan data received from the LMS device 130 in the database 111 .

The input/output device 140 may include an input means (eg, a touch pad or key pad) and an output means (eg, a display). According to an embodiment of the present invention, the input/output device 140 may include a touch panel 141 for vehicle entry installed at a location where a vehicle enters and a touch panel 142 for vehicle exit installed at a location where a vehicle exits.

When entering the vehicle, the vehicle driver may input at least one of vehicle information, vehicle type, and aggregate type through the touch panel 141 for entering the vehicle, and input vehicle information through the touch panel 142 for exiting the vehicle. can do.

According to an embodiment of the present invention, the CCTV 150 may include a plurality of CCTVs (eg, cameras) 151, 152, and 153. For example, the first CCTV (or first camera) 151 may be installed at an appropriate location to photograph the upper surface of the vehicle, and the second camera 152 may be installed at an appropriate location to photograph the front of the vehicle. and the third camera 153 may be installed at an appropriate location to photograph the rear of the vehicle. The first CCTV 151 may obtain an image in which the aggregate is loaded by photographing the upper surface of the vehicle. Image data captured by each CCTV 150 is transmitted to the management server 110 through the communication network 120 . The management server 110 stores the image data received from each of the CCTVs 150 in the database 111.

The shopping mall management server 110 extracts aggregate data based on the first scan data and the second scan data stored in the database 111, and can calculate the volume of the aggregate loaded in the vehicle from the extracted aggregate data. there is.

Detailed functions of the management server 110 will be described in detail in the description of FIGS. 2 and 5 .

2 is a block diagram showing detailed structures of a management server and a database according to an embodiment of the present invention. Referring to FIG. 2, the management server 110 includes an input/output interface 210 and a processor 220, and the processor 220 includes an LMS control module 221, an aggregate volume calculation module 222, and a data processing module. (223).

The database 111 may include vehicle information 231 , LMS measurement information 232 , volume calculation information 233 , photo information 234 , and statistical information 235 .

The input/output interface 210 performs a function of receiving data from an external device (eg, the LMS device 130, the input/output device 140, and the CCTV 150), through each module of the management server 110. It performs a function of transmitting the generated data to the external device.

The LMS control module 221 generates a control signal for controlling the LMS device 130 and transmits it to the LMS device 130 through the communication network 120 . A control signal for controlling the LMS device 130 may correspond to a rotation value of a servo motor that allows the LMS device 130 to sense a vehicle by rotating in a specified angle unit.

The data processing module 223 stores data (eg, vehicle information 231, LMS measurement information 232) received from the external device (eg, the LMS device 130, the input/output device 140, and the CCTV 150). , photo information 234) or performs a function of storing in the database 111. According to an embodiment of the present invention, the data processing module 223 generates *.pcd files from the data scanned from the LMS device 130 and stores them in the database 111 .

The aggregate volume calculation module 222 calculates the volume of the aggregate based on the LMS measurement information 232 stored in the database. The calculated volume calculation information 233 is stored in a database. The management server 110 generates statistical information 235 as shown in FIG. 20 from various information processed by the data processing module 223 and volume calculation information calculated by the aggregate volume calculation module 222. And the generated statistical information 235 is stored in the database 111.

Hereinafter, a procedure for entering and exiting a vehicle according to an embodiment of the present invention will be described with reference to FIGS. 3 and 4 . As described above, in the description to be described later, it is assumed that the aggregate is loaded when a vehicle (eg, a truck) enters the vehicle, and the aggregate is emptied when the vehicle leaves the vehicle. However, according to another embodiment, the present invention may be applied assuming that the aggregate is emptied when the vehicle is entered and the aggregate is loaded when the vehicle is exited.

3 is a flowchart illustrating a procedure for entering a vehicle according to an embodiment of the present invention. Referring to FIG. 3 , when the vehicle is parked, the vehicle stops at a designated location for scanning the loaded aggregate (310). For example, as shown in FIG. 6 , when a vehicle enters and the vehicle driver's seat is located on the touch panel 141 for entering, the driver stops the vehicle 310 and displays the vehicle number and number through the touch panel 141 for entering. At least one information of vehicle type and aggregate type may be input (320).

The LMS device 130 located on the upper surface of the vehicle scans the upper surface of the vehicle to generate first scan data and transmits the first scan data to the management server 110 . The license plate confirmation CCTV 150 installed on the front or rear of the vehicle photographs the license plate and transmits it to the management server 110. According to an embodiment of the present invention, when a function of identifying a license plate through the captured license plate photo is added, a procedure for the driver to input a vehicle number through the touch panel 141 for entering the vehicle may be omitted.

The CCTV (150) installed on the upper surface of the vehicle photographs the upper surface of the aggregate (or building material) loaded on the truck and transmits it to the management server 110.

The management server 110 stores the measured or scanned data from the LMS device 130 in the database 111. In addition, the management server 110 stores (330) the license plate photo or aggregate top surface photo taken through the CCTV (150) in the database (111).

Upon completion of the procedure, the driver passes 340 the location by moving the vehicle.

4 is a flowchart illustrating a procedure when leaving a vehicle according to an embodiment of the present invention. Referring to FIG. 4 , when the vehicle is unloaded, the vehicle stops at a designated location for scanning the upper surface of the vehicle from which the aggregate is emptied (410). For example, as shown in FIG. 7 , when a vehicle enters and the vehicle driver's seat is positioned on the touch panel 142 for vehicle exit, the driver stops the vehicle 410 and enters the vehicle number through the touch panel 141 for vehicle exit. You can enter 420.

The LMS device 130 located on the upper surface of the vehicle scans the empty aggregate box on the upper surface of the vehicle to generate second scan data and transmits it to the management server 110 . The license plate confirmation CCTV 150 installed on the front or rear of the vehicle photographs the license plate and transmits it to the management server 110. According to an embodiment of the present invention, when a function of identifying a license plate through the photographed license plate photo is added, a procedure for the driver to input a vehicle number through the vehicle exit touch panel 142 may be omitted.

The CCTV 150 installed on the upper surface of the vehicle captures the upper surface of the vehicle from which the aggregate (or building material) is emptied and transmits the photograph to the management server 110 .

The management server 110 stores the measured or scanned data from the LMS device 130 in the database 111. In addition, the management server 110 stores (430) a license plate photo or an aggregate top surface photo taken through the CCTV (150) in the database (111).

Upon completion of the procedure, the driver passes 440 the location by moving the vehicle.

According to an embodiment of the present invention, the management server 110 extracts aggregate data based on the first scan data and the second scan data received from the LMS device 130, and the vehicle from the extracted aggregate data. Calculate the volume of aggregate loaded in The management server 110 stores the calculated aggregate volume in the database 1110 (430).

Hereinafter, referring to FIG. 5, a detailed embodiment of measuring the aggregate volume in the management server 110 according to an embodiment of the present invention will be described.

5 is a flowchart illustrating a procedure for measuring aggregate volume in a truck loading state according to an embodiment of the present invention. Referring to FIG. 5 , the LMS device 130 may apply the rotation value of the sensor according to the rotation of the servo motor. For example, whenever a control signal is received from the management server 110, the angle of the sensor may be increased by a specified value (eg, 0.17006°). In this case, whenever the servo motor rotates, the Y-axis of the scanned data may be rotated by an angle value and stored. The sensor of the LMS device 130 may collect data by sensing for each corresponding angle and scan 510 an image.

8 is an exemplary view showing a setting program for a servo motor according to an embodiment of the present invention. Referring to FIG. 8 , the angle of the sensor may be adjusted step by step by controlling the rotation of the servo motor. For example, as shown in FIG. 8, the sensor of the LMS device 130 can be controlled through a program for controlling the servo motor, and values for control can be set as follows.

- 50 Pulses/1Rotation

- Reducer = 10:1

- Velocity = 0.3 rps

- Resolution = 4096

- Command Distance (Steps) = 12,000

- Actual angle = 12,000/40,960*360 = 105.46°

- Number of tacho signals received when rotating 105 degrees: 600 times

- Angle value to be rotated per pulse: 105.46 / 600 = 0.175°

9 is a diagram showing the concept of a measurement method by an LMS device according to an embodiment of the present invention. Referring to FIG. 9 , according to an embodiment of the present invention, the upper surface of the vehicle may be scanned by the sensor of the LMS device 130 when entering or exiting the vehicle. For example, when the vehicle loads the aggregate, the servo motor rotates 105 degrees and scans the upper surface of the vehicle to generate first scan data. Then, when the vehicle unloads and leaves the aggregate, the servo motor rotates 105° again to scan the upper surface of the vehicle to generate second scan data.

10 is a diagram illustrating a data scanning method according to rotation of a servo motor according to an embodiment of the present invention. Referring to FIG. 10, in order to move the angle of 105.46 ° as set through FIG. 8, a total of 105.46 ° can be rotated by rotating 0.175 ° for each pulse signal (tacho signal) for 600 pulse signals. .

11A is a diagram showing a distance measured according to rotation of an LMS according to an embodiment of the present invention, FIG. 11B is a diagram showing a difference in a distance measured according to rotation of an LMS according to an embodiment of the present invention, and FIG. It is a diagram showing the result of applying the rotation value according to the rotation of the LMS according to the embodiment of the invention.

Referring to FIG. 11A , each time the LMS device 130 rotates, the distance between the LMS device 130 and the ground gradually increases and the value of the increased distance is received. Currently, the servo motor does not rotate in place but moves while moving. Referring to FIG. 11B, when the distances increased each time the LMS device 130 rotates, the result of increasing both ends of the point cloud as shown in FIG. 12A appears.

Therefore, each time the LMS device 130 rotates, a rotation value is applied to each point cloud using a rotate function by calculating how much it has rotated. At this time, a value rotated by 0.175° using a rotate function is applied.

The rotation function calculates the actual length according to the angle as COS(RADIANS(a))*b. At this time, a is the rotation angle of the step motor, and b is the distance measured by the LMS device. When the rotation function is applied to the scanned data of FIG. 12A, the image may be corrected as shown in FIG. 12B.

According to an embodiment of the present invention, the scan data may be generated once when entering the vehicle and once when leaving the vehicle. The scanned data is stored as an input file (first scan data) and an output file (second scan data) (520). The scanned data may be saved as a *.pcd file.

In addition, according to an embodiment of the present invention, the upper surface of the vehicle may be photographed by a CCTV (camera) for photographing the upper surface of the vehicle when entering and exiting the vehicle. The captured image data is transmitted to the management server. 13A is a view showing a picture of a vehicle loaded with aggregates taken when entering a car according to an embodiment of the present invention, and FIG. 13B is a view showing a picture of a vehicle emptied of aggregates taken when leaving a car according to an embodiment of the present invention. .

According to an embodiment of the present invention, the stored first scan data or second scan data may include a noise component. Accordingly, as shown in FIGS. 14A and 14B , points outside the range set by a range filter may be removed (530) using the coordinate values of the X, Y, and Z axes. That is, FIG. 14A is a diagram showing data before applying a range filter according to an embodiment of the present invention, and FIG. 14B is a diagram showing data after applying a range filter according to an embodiment of the present invention. As points outside the range set by the range filter are removed, unnecessary points other than the vehicle (eg, terrain, features, etc.) in the first scan data and the second scan data may be primarily removed.

Next, the management server finds a corner portion in the first scan data or the second scan data and aligns the twisted rotational direction of the truck (540). For example, by aligning rotational directions of both first scan data obtained when entering the vehicle and second scan data obtained when exiting the vehicle, the two image data are completely overlapped. In this way, the reason for aligning is to match the scan data when entering the vehicle and the scan data when leaving the vehicle because the vehicle driver cannot accurately park at the measurement location of the LMS device.

15A is a diagram showing a result of detecting a corner point according to an embodiment of the present invention, and FIG. 15B is a diagram showing data aligned in rotation directions according to an embodiment of the present invention.

When the two image data are aligned in this way, aggregate data is extracted by comparison between the scan data (550). For example, referring to FIG. 16 , a difference between point clouds of two aligned scanned images may be obtained as another point cloud. (OutputCloud = inputCloud - targetCloud). That is, if the scan data of when the aggregate is loaded and moved in and when the aggregate is emptied are aligned so as to overlap, and then the SegmentDifference algorithm is used, only the contents of the aggregate can be extracted as shown in FIG. 16 .

More specifically, the difference can be distinguished by receiving the maximum distance between corresponding PointCloud points as a threshold value. At this time, if the SegmentDifference algorithm is used in a state where it is not properly aligned, it is most important to accurately align the two scan data for entry and exit because even the vehicle aggregate box is output together.

16 is a diagram showing a result of extracting aggregate data by comparing scan data according to an embodiment of the present invention.

Next, only the volume of the aggregate actually loaded in the vehicle can be calculated by combining the scan data A from which only the aggregate is extracted and the aggregate box (cut to the height of the aggregate) B (560). 17 is a diagram showing a result of merging aggregate data and aggregate box data according to an embodiment of the present invention.

Finally, the volume of the aggregate is calculated from the combined data of the aggregate and the aggregate (570). According to an embodiment of the present invention, an alpha shape algorithm may be applied as a method for calculating the volume of the aggregate. The alpha shape algorithm serves to create a boundary area or volume surrounding a set of points. By adjusting the threshold of the alpha shape algorithm, the fit around the points can be tight or loose to create non-blocking areas, points can be added or removed, or holes or areas can not be marked.

More specifically, the volume of the merged point clouds may be estimated using the alpha shape algorithm. An alpha shape is a polygon in which all interior angles are not less than straight angles (180°), and at least one interior angle is greater than straight line angles. 18 is a diagram showing a method for measuring a volume using an alpha shape algorithm according to an embodiment of the present invention, and FIG. 19 is a diagram showing volume measured data using an alpha shape algorithm according to an embodiment of the present invention. am.

Referring to FIGS. 18 and 19 , it is possible to create a 3D stereoscopic image with points extracted only from aggregate points, and calculate a volume value for the stereoscopic image. According to the above calculation, the volume amount of the aggregate loaded in the actual vehicle can be calculated (570).

20a to 20e are diagrams showing an aggregate volume management screen according to an embodiment of the present invention. Referring to FIGS. 20A to 20E , the calculated volume values are stored in a database. For example, as shown in FIG. 20A, it may be inquired by a truck aggregate management program, and the collected data may be processed to output analysis results as shown in FIGS. 20B to 20E.

The invention has been described above with the object of method steps demonstrating the performance of particular functions and their relationships. The boundaries and order of these functional components and method steps have been arbitrarily defined herein for convenience of description. Alternate boundaries and orders may be defined as long as the above specific functions and relationships are properly performed. Any such alternative boundaries and orders are therefore within the scope and spirit of the claimed invention. Additionally, the boundaries of these functional components have been arbitrarily defined for convenience of description. Alternative boundaries may be defined as long as certain important functions are properly performed. Likewise, flowchart blocks may also have been arbitrarily defined herein to represent any significant functionality. For extended use, the flow diagram block boundaries and order may have been defined and still perform some important function. Alternate definitions of both functional components and flow diagram blocks and sequences are therefore within the scope and spirit of the claimed invention.

The invention may also have been described, at least in part, in terms of one or more embodiments. Embodiments of the invention are used herein to represent the invention, its aspects, its features, its concepts, and/or examples thereof. A physical embodiment of an apparatus, object of manufacture, machine, and/or process embodying the present invention may incorporate one or more aspects, features, concepts, examples, etc. described with reference to one or more embodiments described herein. can include Moreover, throughout the drawings, embodiments may incorporate the same or similarly named functions, steps, modules, etc., which may use the same or different reference numbers, and as such, the functions, The steps, modules, etc. may be the same or similar functions, steps, modules, etc., or others.

As described above, the present invention has been described by specific details such as specific components and limited embodiments and drawings, but these are provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , Those skilled in the art in the field to which the present invention belongs can make various modifications and variations from these descriptions.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and it will be said that not only the claims to be described later, but also all modifications equivalent or equivalent to these claims fall within the scope of the spirit of the present invention. .

110: management server 111: database
120: communication network 130: LMS device
140: input/output device 141: touch panel for entering
142: touch panel for exit 150: CCTV
210: input/output interface 220: processor
221: LMS control module 222: aggregate volume calculation module
223: data processing module 231: vehicle information
232: LMS measurement information 233: volume calculation information
234: photo information 235: statistical information

Claims (4)

By receiving a control signal for controlling the LMS device 130 corresponding to the rotation value of the servo motor that allows the laser measurement sensor to sense the vehicle by rotating in a specified angle unit, the rotation value of the laser measurement sensor according to the control signal In the aggregate volume measurement method in a truck loading state by a laser measurement sensor (LMS) device located on the upper surface of the vehicle including a laser measurement sensor applying,
After the vehicle loaded with aggregate stops at a designated location, the LMS device 130 located on the upper surface of the vehicle rotates the server motor to increase the angle of the laser measurement sensor by a designated value whenever the control signal is received, and Storing first scan data obtained by scanning an upper surface of the vehicle loaded with aggregate by a laser measurement sensor;
After the vehicle emptied of aggregate stops at a predetermined location, the LMS device 130 located on the upper surface of the vehicle rotates the server motor to increase the angle of the laser measurement sensor by a specified value whenever the control signal is received, thereby increasing the laser measurement sensor angle for each angle. storing second scan data obtained by scanning an upper surface of the vehicle from which the aggregate is emptied by a measuring sensor;
Extracting aggregate data based on the stored first scan data and second scan data; and
Calculating the volume of the aggregate loaded in the vehicle from the extracted aggregate data; including,
Calculating the volume of the aggregate,
It is performed by an alpha shape algorithm,
Combining the extracted aggregate data and aggregate box data; and
Calculating the volume based on the combined data; further comprising a method for measuring the volume of aggregate in a truck-loaded state.
The method of claim 1, wherein the method,
Adjusting the range of the vertices (points) included in the first scan data and the second scan data by a range filter (range filter); further comprising, a method for measuring aggregate volume in a truck loading state.
The method of claim 1, wherein the method,
The first scan data and the step of identifying at least two vertices from the vertices (points) included in the second scan data; further comprising a truck loading aggregate volume measurement method.
The method of claim 3, wherein the method,
Based on the identified at least two vertices, aligning the coordinates of the first scan data and the second scan data with each other; further comprising a truck loaded aggregate volume measurement method.

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