JP2000283734A - Method and device for measuring amount of soil loaded on truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automate the measurement of the amount of soil loaded on a truck and the work of creating documents by picking up the image of the surface of the load-carrying perform of a truck for loading soil which passes a gate and the images of a vehicle body number and a vehicle type and computing the amount of loaded soil from the images of the load-carrying platform of the same truck before and after the loading of soil and its vehicle type. SOLUTION: When a truck 1 passes a gate 3 before and after the loading of soil, an optical sensor 7 detects it to operate the shutters of digital cameras 4a and 4b simultaneously to pick up the image of the surface shape of the load-carrying platform 2 before loading and the image of the surface shape of loaded soil after loading. In addition, the images of the number plate and vehicle type of the truck 1 are picked up by a video camera 8 arranged at the gate 3. After the completion of image pickup, the images are processed by a computer 10, and the images are superposed on each other by a stereo image measuring method to obtain the three-dimensional coordinates of the load-carrying platform 2 and the surface of the loaded soil. Then the amount of loaded soil is computed from the difference between the image shapes of the truck 1 of the same number before and after the loading of soil.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for measuring the amount of soil loaded on a truck, and more particularly to a method for measuring the volume of earth loaded on a truck automatically by using a photogrammetry technique. The present invention relates to a measuring method and apparatus.

[0002]

2. Description of the Related Art Conventionally, the amount of soil loaded on a truck is estimated by estimating the loaded capacity of each truck and multiplying the estimated volume by the number of trucks.

[0003]

However, in the above-mentioned conventional method, the surface of the amount of soil to be loaded on each truck is not smooth, so that there are many errors in the measured values, and there is a drawback that the form creation operation cannot be automated.

The present invention has been made to eliminate the above disadvantages.

[0005]

According to the present invention, there is provided an apparatus for measuring the amount of soil loaded on a truck, wherein the truck for loading earth and sand measures two loading platforms for photographing the surface of the loading platform of the passing truck provided on a passing gate. Camera, a vehicle number and a vehicle shape confirmation camera of the truck passing through the gate, a body before the earth and sand loading of the same earth loading truck confirmed by the vehicle body number and the vehicle shape confirmation camera, and a vehicle after the earth and sand loading Means for calculating the amount of loaded soil from the image of the carrier and the volume of the carrier obtained from the vehicle shape.

[0006] The method for measuring the amount of soil loaded on a truck according to the present invention comprises:
A step of photographing the surface shape, license plate, and vehicle shape of the truck before loading the earth and sand; a step of photographing the surface shape, number plate, and vehicle shape of the truck after loading the earth and sand; And a step of calculating the amount of loaded soil from the three-dimensional shape of the loading soil surface obtained from the surface shape of the loading platform of the truck before and after loading, and the volume of the loading platform corresponding to the vehicle shape.

[0007] The method is characterized in that the method further comprises a step of creating a form in which the track number, the amount of loaded soil and the loading time are entered, and displaying the form on a monitor.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an apparatus for measuring the amount of soil loaded on a truck according to the present invention, 1 is a truck for loading earth and sand, 2 is a bed of the truck 1, 3 is a gate through which the truck 1 passes, and 4
Reference numerals a and 4b denote two digital cameras which are horizontally separated from each other and are arranged above the gate 3 so as to photograph the surface of the loading platform 2 of the passing truck 1; 5a and 5b are strobes; and 6 is earth and sand. A light emitter disposed on one side of the gate 3 on the side of the loading area (not shown), 7 is an optical sensor arranged on the other side of the gate 3 for receiving light from the light emitter 6, and 8 is a light sensor. A video camera for checking the vehicle number and the vehicle shape of the passing truck 1 disposed on the side of the sediment loading area of the gate 3, 9 is an observation hut, 10 is a computer, 11 is a monitor, and 12 is a white line for truck guidance.

FIG. 2 is a block diagram of the measuring apparatus of the present invention, in which reference numeral 13 denotes an operation unit, and reference numeral 14 denotes a power supply.

FIG. 3 is an explanatory view of the monitor display. Reference numeral 15 denotes a track number display frame, 16 denotes a loading soil amount display frame, and 17 denotes a loading time display frame.

In the present invention,

1) When the truck 1 before loading the earth and sand passes through the gate 3, this is detected by the optical sensor 7, and the two digital cameras 4a, 4a,
4b shutters are operated at the same time,
Take the surface shape of

After the photographing is completed, the image is processed by the computer 10 and the images photographed by the two digital cameras 4a and 4b are superimposed by a stereo image measuring method to obtain coordinates based on the mounting points of the digital cameras 4a and 4b. Bed 2 of truck 1 before loading earth and sand on the system
Of the three-dimensional coordinates of the
Recorded in.

The license plate and the vehicle shape of the truck 1 are photographed and recognized by the video camera 8 installed on the side of the earth and sand loading facility of the gate 3.

2) When the truck 1 loaded with earth and sand passes through the gate 3 in the earth and sand loading facility, this is detected by an optical sensor, and the shutters of the two digital cameras 4a and 4b are simultaneously operated by a command from the computer 10. Then, the surface shape of the loaded sand is photographed.

After the photographing is completed, the images processed by the computer 10 are superimposed on each other by the stereo image measuring method, so that the three-dimensional surface of the loaded soil on the coordinate system based on the mounting points of the digital cameras 4a and 4b is obtained. The coordinates are obtained, and the data is recorded in the computer 10 at the same time.

Further, the license plate and the vehicle shape of the truck 1 are photographed by the video camera 8 installed at the gate 3, and the computer 10 performs image processing to confirm the number and the vehicle shape of the truck 1.

3) The amount of soil to be loaded is calculated from the difference between the photographed image shapes before and after the loading of the earth and sand on the truck 1 of the same number and the volume of the loading platform obtained from the database corresponding to the vehicle shape, and a form is created.

4) If necessary, a track number, a loading soil amount and a loading time are described on a form as shown in FIG.

FIG. 4 is a flowchart showing the movement of the truck 1 in the method for measuring the amount of soil on a truck according to the present invention.
FIG. 5 shows a flowchart of measurement and processing in the method for measuring the amount of soil loaded on a truck according to the present invention.

It is needless to say that other arbitrary detecting means can be used in place of the light emitting device 6 and the optical sensor 7.

[0023]

As described above, the method and the apparatus for measuring the amount of soil loaded on a truck according to the present invention can automate the measurement of the amount of soil loaded on a truck and the work of creating a form, thereby saving labor on site. Also, by leaving the track number and the loading status as image data and pasting these images on a form or visually checking them, there is a great advantage that the reliability of the measurement results can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an apparatus for measuring the amount of soil loaded on a truck according to the present invention.

FIG. 2 is a block diagram of a measuring device for a truck loaded soil amount according to the present invention.

FIG. 3 is an explanatory diagram of a monitor display in the truck loaded soil amount measuring device of the present invention.

FIG. 4 is a flowchart showing the movement of a truck in the method for measuring the amount of soil loaded on a truck according to the present invention.

FIG. 5 is a flowchart of measurement and processing in the method for measuring the amount of soil loaded on a truck according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 truck 2 carrier 3 gate 4a digital camera 4b digital camera 5a strobe 5b strobe 6 light emitter 7 optical sensor 8 video camera 9 observation hut 10 computer 11 monitor 12 white line for guidance 13 operating device 14 power supply 15 track number display frame 16 loading capacity Display frame 17 Loading time display frame

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masashi Takahashi 154-1, Yotsuku-cho, Nishinasuno-cho, Nasu-gun, Tochigi Prefecture Goyo Construction Co., Ltd. No. 1-3-18, Kobe Steel Works, Ltd. (72) Inventor Mamoru Kanda 3300-3, Nishiminato-machi, Niigata-shi, Niigata Pref. CC00 DD06 FF01 FF05 GG08 JJ03 JJ05 JJ26 MM28 QQ31

Claims (3)

[Claims] 1. A truck for sediment loading, which is provided on a gate passing therethrough, for photographing the surface of the platform of the passing truck, two loading platform measuring cameras, a body number and a vehicle shape of the truck passing the gate. Confirmation camera, the load before the sediment loading of the same sediment loading truck confirmed by the above body number and vehicle shape confirmation camera, the image of the loading platform after the sediment loading, and the loading capacity from the loading capacity obtained from the vehicle shape And a means for calculating the volume of the truck loaded soil. 2. A truck surface shape of a truck before earth and sand loading,
The process of photographing the license plate and the vehicle shape, the surface shape of the truck bed after loading the earth and sand, the process of photographing the license plate and the vehicle shape, and the surface surface of the truck before and after the loading of the above-mentioned truck with the same license plate And calculating the amount of soil to be loaded from the three-dimensional shape of the surface of the loaded earth and sand obtained from the above and the volume of the loading platform corresponding to the vehicle shape. 3. The method according to claim 2, further comprising the step of creating a form in which the track number, the amount of loaded soil, and the loading time are entered, and displaying the form on a monitor.