JP6894833B2 - Ready-mixed concrete amount display method and ready-mixed concrete amount display program - Google Patents

Description

The present invention relates to a ready-mixed concrete amount display method and a ready-mixed concrete amount display program for displaying the amount of ready-mixed concrete in a mixer drum of a mixer truck.

Patent Document 1 discloses a ready-mixed concrete amount display device for displaying the amount of ready-mixed concrete in the mixer drum in a mixer truck provided with a mixer drum capable of loading so-called ready-mixed concrete such as mortar or ready-mixed concrete as a content. In this ready-mixed concrete amount display device, the estimated ready-mixed concrete amount is displayed based on the area occupied by the ready-mixed concrete and the area occupied by the blade in the captured image captured in the mixer drum.

Japanese Unexamined Patent Publication No. 2016-68530

However, in order to display the amount of ready-mixed concrete in the mixer drum by the ready-mixed concrete amount display device described in Patent Document 1, it is necessary to assemble an image pickup device, a control device, and a display device on the mixer truck. Therefore, in order to grasp the amount of ready-mixed concrete of a plurality of mixer trucks, these devices must be assembled to all the mixer trucks, and the cost required to grasp the amount of ready-mixed concrete may become enormous.

The present invention has been made in view of the above problems, and an object of the present invention is to make it possible to grasp the amount of ready-mixed concrete in a mixer drum at low cost.

The first invention provides a portable terminal including an imaging unit capable of capturing an image inside a mixer drum rotatably mounted on a mixer truck and a display unit capable of displaying an image captured in the mixer drum captured by the imaging unit. The ready-mixed concrete amount display method for displaying the amount of ready-mixed concrete in the mixer drum by using is to superimpose the load capacity scale according to the slump value of the ready-mixed concrete in the mixer drum on the image captured in the mixer drum captured by the imaging unit. It is characterized by including an image composition step for generating a composite image and a display step for displaying the composite image on a display unit.

In the first invention, a composite image in which the load capacity scale corresponding to the slump value of the ready-mixed concrete in the mixer drum is superimposed on the captured image captured in the mixer drum of the mixer truck is displayed on the display unit of the mobile terminal. .. Therefore, it is possible to easily grasp the amount of ready-mixed concrete in the mixer drum from the composite image displayed on the display unit of the mobile terminal. In this way, it is possible to grasp the amount of ready-mixed concrete in the mixer drum of the mixer truck with a mobile terminal, and it is not necessary to assemble a device such as an image pickup device, a control device, or a display device in the mixer truck. The amount can be grasped at low cost.

In the second invention, the ready-mixed concrete amount display method further includes an imaging step that enables the imaging unit to image the inside of the mixer drum, and in the imaging step, an imaging guide that guides the rotation position of the mixer drum to a predetermined position is provided. The feature is that it is displayed on the display unit.

In the second invention, an imaging guide for guiding the rotation position of the mixer drum to a predetermined position is displayed on the display unit in a state where the imaging unit can perform imaging. Therefore, it is possible to set the rotation position of the mixer drum to the same position each time by photographing the mixer drum according to the imaging guide. In this way, by making the imaging conditions the same each time, the amount of ready-mixed concrete can be grasped more accurately.

In the third invention, the mobile terminal further includes an inclination detection unit that detects the inclination of the mobile terminal with respect to the horizontal plane, and in the image synthesis step, the inclination of the mobile terminal detected by the inclination detection unit when the captured image is captured. A corrected image obtained by correcting the captured image to a horizontal state is generated based on the above, and the load capacity scale is superimposed on the corrected image.

In the third invention, the load capacity scale is superimposed on the corrected image obtained by correcting the captured image to the horizontal state based on the inclination of the mobile terminal. Therefore, even if the image is taken with the mobile terminal tilted, the composite image is generated by superimposing the load capacity scale on the corrected image corrected to the horizontal state. Therefore, the ready-mixed concrete in the mixer drum is generated from the composite image. The amount can be easily grasped.

In the fourth invention, the load capacity scale indicates the height of the liquid level of the ready-mixed concrete in the mixer drum, which changes according to the amount of ready-mixed concrete in the mixer drum, and the inclination of the load capacity scale depends on the slump value. It is characterized by changing.

In the fourth invention, the inclination of the load capacity scale for grasping the amount of ready-mixed concrete in the mixer drum changes according to the slump value. That is, the load capacity scale combined with the captured image is appropriately changed according to the slump value of the ready-mixed concrete in the mixer drum. Therefore, even when the slump value of the ready-mixed concrete is changed, the amount of ready-mixed concrete in the mixer drum can be easily grasped from the composite image.

In the fifth invention, the mobile terminal further includes an input unit capable of inputting the slump value of the ready-mixed concrete in the mixer drum, and in the image composition step, a load capacity scale corresponding to the slump value input via the input unit is provided. It is characterized in that it is superimposed on the captured image.

In the fifth invention, the composite image is generated by superimposing the load capacity scale corresponding to the slump value input via the input unit on the captured image. Therefore, even when the slump value of the ready-mixed concrete changes, the amount of ready-mixed concrete in the mixer drum can be easily grasped from the composite image.

The sixth invention provides a portable terminal including an image pickup unit capable of capturing an image in a mixer drum rotatably mounted on a mixer truck and a display unit capable of displaying an image captured in the mixer drum captured by the image pickup section. A ready-mixed concrete amount display program that controls and displays the amount of ready-mixed concrete in the mixer drum is provided on the mobile terminal for an imaging step that enables the image pickup unit to image the inside of the mixer drum and an image captured in the mixer drum that is captured by the image pickup unit. It is characterized in that an image composition step of superimposing a load capacity scale according to a slump value of ready-mixed concrete in a mixer drum to generate a composite image and a display step of displaying the composite image on a display unit are executed.

In the sixth invention, a composite image in which the load capacity scale corresponding to the slump value of the ready-mixed concrete in the mixer drum is superimposed on the captured image captured in the mixer drum of the mixer truck is displayed on the display unit of the mobile terminal. .. Therefore, it is possible to easily grasp the amount of ready-mixed concrete in the mixer drum from the composite image displayed on the display unit of the mobile terminal. In this way, it is possible to grasp the amount of ready-mixed concrete in the mixer drum of the mixer truck with a mobile terminal, and it is not necessary to assemble a device such as an image pickup device, a control device, or a display device in the mixer truck. The amount can be grasped at low cost.

According to the present invention, the amount of ready-mixed concrete in the mixer drum can be grasped at low cost.

It is a side view of the mixer truck which displays the amount of ready-mixed concrete in a mixer drum by the ready-mixed concrete amount display method which concerns on embodiment of this invention. It is an enlarged view which showed the part II of FIG. 1 enlarged. FIG. 1 is a view of the inside of the mixer drum from the direction indicated by the arrow A in FIG. It is a block diagram of the mobile terminal used in the ready-mixed concrete amount display method which concerns on embodiment of this invention. FIG. 1 is a diagram showing a display unit of a mobile terminal when the imaging unit is directed in the direction indicated by the arrow A in FIG. 1. It is a figure which shows the display part of the mobile terminal which displayed the image which shows the amount of ready-mixed concrete in a mixer drum. It is a flowchart which shows the procedure which displays the ready-mixed concrete amount on a mobile terminal by the ready-mixed concrete amount display method which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, with reference to FIGS. 1 to 3, the mixer truck 10 displays the amount of ready-mixed concrete in the mixer drum by the ready-mixed concrete amount display method (hereinafter, referred to as “ready-mixed concrete amount display method”) according to the embodiment of the present invention. The overall configuration of is described.

The mixer truck 10 is a vehicle that transports so-called ready-mixed concrete (hereinafter, referred to as “ready-mixed concrete”) such as mortar and ready-mixed concrete. In the following description, a case where the mixer truck 10 loads ready-mixed concrete as a load will be described.

As shown in FIG. 1, the mixer truck 10 includes a pedestal 11 extending in the front-rear direction of the vehicle, a mixer drum 20 rotatably mounted on the gantry 11, a drum driving device 12 for rotationally driving the mixer drum 20, and externally. A hopper 13 for guiding the ready-mixed concrete to be introduced into the mixer drum 20 and a chute 14 for guiding the ready-mixed concrete discharged from the mixer drum 20 to a predetermined position are provided.

The mixer drum 20 is a cylindrical container that rotates about a rotation shaft C1. An opening 20a for loading and unloading ready-mixed steel is provided at the rear end of the rear end of the vehicle, and the front end of the front of the vehicle is provided with an opening 20a. Is provided with a drive shaft 21 extending outward along the rotation shaft C1. The mixer drum 20 is supported by the gantry 11 in a state where the rear end side on which the opening 20a is provided is lifted above the front end side.

The drive shaft 21 of the mixer drum 20 is connected to a hydraulic motor (not shown) provided in the drum drive device 12 via a gearbox (not shown). Therefore, the mixer drum 20 is rotationally driven by the hydraulic motor in the forward rotation direction or the reverse rotation direction. The drive shaft 21 of the mixer drum 20 may be connected to the traveling engine (not shown) of the mixer truck 10 via a gearbox. In this case, the mixer drum 20 is rotationally driven by the traveling engine. Further, as the drive source of the mixer drum 20, an electric motor may be used instead of the hydraulic motor or the engine.

As shown in FIG. 2, a conical cover member 25 is provided on the bottom portion inside the front end portion of the mixer drum 20 so as to cover the end portion of the drive shaft 21. The cover member 25 is fixed to the inner wall surface of the mixer drum 20 so that its top 25a projects toward the inside of the mixer drum 20 and its central axis C2 is coaxial with the rotation axis C1 of the mixer drum 20. The central axis C2 of the cover member 25 and the rotation axis C1 of the mixer drum 20 do not have to be exactly the same, and they may be slightly deviated from each other. Further, the inclination of the conical surface 25b of the cover member 25 does not have to be constant toward the top 25a, and may gradually become gentle toward the top 25a. That is, the top 25a of the cover member 25 does not have to be sharp, and may have a rounded shape.

Further, in the mixer drum 20, a pair of blades 22 and 23 are spirally arranged along the inner wall surface of the mixer drum 20. The blades 22 and 23 are divided into front blades 22a and 23a arranged on the front side of the vehicle and rear blades 22b and 23b arranged on the rear side of the vehicle in a substantially intermediate portion of the mixer drum 20. To. The rear blades 22b and 23b are joined to the inner wall surface of the mixer drum 20 at the opening 20a and to the cylindrical seal pipe 24 arranged on the rotation axis C1 line of the mixer drum 20.

The seal pipe 24 is provided to smoothly guide the ready-mixed concrete put into the hopper 13 into the inside of the mixer drum 20. The shape of the seal pipe 24 will be described with reference to FIG. FIG. 3 is a view of the inside of the mixer drum 20 through the inside of the seal pipe 24 from the direction indicated by the arrow A in FIG. The cover member 25 is shown in the center of FIG. 3, and the ends 22c and 23c of the front blades 22a and 23a are arranged around the cover member 25, respectively. Further, as described above, the blades 22 and 23 are divided into front blades 22a and 23a and rear blades 22b and 23b at a substantially intermediate portion of the mixer drum 20.

The seal pipe 24 has a tubular portion 24a that can be slidably contacted with the hopper 13 and a pair of extending portions 24b that extend from the tubular portion 24a toward the inside of the mixer drum 20. The extending portion 24b is formed in a substantially triangular shape, respectively, and has a hypotenuse 24c formed along the rear blades 22b and 23b and a connecting side 24d formed from the hypotenuse 24c toward the tubular portion 24a. Have. The seal pipe 24 is fixed to the mixer drum 20 by welding the hypotenuse 24c of the extending portion 24b to the inside of the rear blades 22b and 23b, respectively.

The hopper 13 is arranged above the opening 20a of the mixer drum 20 in order to guide the ready-mixed concrete introduced from above the mixer truck 10 into the mixer drum 20 through the seal pipe 24. A hopper cover 15 that covers the opening of the hopper 13 is rotatably provided on the upper portion of the hopper 13 via a hinge 15a. On the other hand, below the opening 20a of the mixer drum 20, a chute 14 for guiding the ready-mixed concrete discharged from the mixer drum 20 to a predetermined position is arranged.

In the mixer truck 10 having the above configuration, when the mixer drum 20 is rotationally driven in the forward rotation direction, which is a counterclockwise rotation when viewed from the rear of the vehicle, the blades 22 and 23 move forward of the mixer drum 20 while stirring the ready-mixed concrete in the mixer drum 20. And move. By rotating the mixer drum 20 and stirring the ready-mixed concrete in this way, it is possible to prevent the ready-mixed concrete from separating or solidifying.

On the other hand, when the mixer drum 20 is rotationally driven in the reverse rotation direction, the blades 22 and 23 move the ready-mixed concrete to the rear of the mixer drum 20 while stirring the ready-mixed concrete. By rotating the mixer drum 20 in the reverse direction in this way, the ready-mixed concrete can be discharged from the opening 20a of the mixer drum 20. The ready-mixed concrete discharged from the opening 20a of the mixer drum 20 is guided to a predetermined position via the chute 14.

Next, the mobile terminal 30 used for displaying the amount of ready-mixed concrete in the mixer drum 20 will be described with reference to FIGS. 4 to 6. FIG. 4 is a block diagram of the mobile terminal 30, FIG. 5 is a diagram showing a state of the mobile terminal 30 when the inside of the mixer drum 20 is photographed from the direction indicated by the arrow A in FIG. 1, and FIG. 6 is a diagram. It is a figure which shows the state of the mobile terminal 30 which displayed the composite image 41 which will be described later.

The mobile terminal 30 is a small portable terminal such as a smartphone or a tablet, and can generate a composite image 41 from a camera 31 as an imaging unit capable of imaging the inside of the mixer drum 20 and an image captured image 40 captured by the camera 31. Controller 50, a display unit 32 that displays a composite image 41 generated by the controller 50, an input unit 33 that can input numerical values related to a ready-mixed camera in the mixer drum 20, and a tilt of the mobile terminal 30 body can be detected. An inclination detection unit 34 is provided. The mobile terminal 30 is not limited to a smartphone or the like, and may have any form as long as it is a portable terminal device having the above configuration. Further, the mobile terminal 30 is provided with a strap (not shown) for preventing the mobile terminal 30 from falling into the mixer drum 20 when the inside of the mixer drum 20 is photographed.

The camera 31 is provided on the back surface of the mobile terminal 30, which is a surface opposite to the surface on which the display unit 32 is provided. Therefore, by pointing the camera 31 in the direction indicated by the arrow A in FIG. 1, it is possible to take a picture of the inside of the mixer drum 20 while checking the image projected on the display unit 32. The captured image 40 captured by the camera 31 may be a still image, or one frame extracted from the moving image may be a still image.

As shown in FIG. 5, the display unit 32 functions as a finder for confirming the composition of the captured image 40 captured by the camera 31, and as shown in FIG. 6, displays the composite image 41 generated by the controller 50. Functions as a monitor. Further, the display unit 32 is provided with a touch panel over the entire surface, and the display unit 32 also functions as an input unit 33 capable of inputting numerical values and characters.

The tilt detection unit 34 is an acceleration sensor, a gyro sensor, or the like provided in the main body of the mobile terminal 30, and detects the tilt of the main body of the mobile terminal 30 with respect to a horizontal plane. Specifically, as shown in FIG. 5, when the mobile terminal 30 is tilted with respect to the vertical direction, a value corresponding to the degree of tilt of the mobile terminal 30 with respect to the horizontal state is output from the tilt detection unit 34 at any time. To.

The controller 50 is composed of a microcomputer provided with a CPU (central processing unit), a ROM (read-only memory), a RAM (random access memory), and an I / O interface (input / output interface). The RAM stores data in the processing of the CPU, the ROM stores the control program of the CPU in advance, and the I / O interface is used for input / output of information with the connected device. The controller 50 may be composed of a plurality of microcomputers.

As shown in FIG. 4, the controller 50 takes in the captured image 40 captured by the camera 31 and processes the image to generate the composite image 41, and when the image processing unit 51 generates the composite image 41. A storage unit 52 that stores the composite image 41 generated by the load capacity scale 43 and the image processing unit 51 used for the above, an estimation unit 53 that estimates the amount of ready-mixed concrete in the mixer drum 20 from the composite image 41, and an inclination detection unit 34. A guide that displays the image pickup guides 44 and 45 on the display unit 32 when the inside of the mixer drum 20 is photographed and the inclination determination unit 54 that determines the degree of inclination of the mobile terminal 30 with respect to the horizontal state based on the detection value detected by. It has a display unit 55 and. The image processing unit 51, the storage unit 52, the estimation unit 53, the tilt determination unit 54, and the guide display unit 55 show each function of the controller 50 as a virtual unit and physically exist. Does not mean. These functions will be described below.

In the image processing unit 51, the position of the center point 42 (see FIG. 6) as the rotation center corresponding to the position of the rotation axis C1 of the mixer drum 20 is estimated from the captured image 40, and is stored with reference to the center point 42. The load capacity scale 43 stored in advance in the unit 52 is synthesized. The position of the center point 42 is image-processed based on the positions of the members constituting the mixer drum 20 such as the circular outer edge of the cover member 25 in the captured image 40, the arrangement of the blades 22 and 23, and the position of the hypotenuse 24c of the seal pipe 24. Estimated by.

Further, when the tilt determination unit 54 determines that the mobile terminal 30 is tilted with respect to the horizontal plane, the image processing unit 51 determines that the load capacity scale 43 is tilted with respect to the horizontal plane before synthesizing the load capacity scale 43 with the captured image 40. A corrected image (not shown) obtained by correcting the captured image 40 to a horizontal state is generated according to the degree of inclination of the mobile terminal 30 determined in 54. Specifically, a corrected image corrected to a horizontal state is generated by tilting the captured image 40 by the amount of tilt determined by the tilt determining unit 54 around the center point 42, and the corrected image is loaded on the generated corrected image. The quantity scale 43 is synthesized.

The storage unit 52 stores a load capacity scale 43 that is combined with the captured image 40 by the image processing unit 51. The load amount scale 43 indicates the height of the liquid level of the ready-mixed concrete in the mixer drum 20 that changes according to the amount of ready-mixed concrete in the mixer drum 20, and is created based on the position of the rotation axis C1 of the mixer drum 20. Therefore, as described above, by synthesizing the load capacity scale 43 according to the center point 42 of the captured image 40, it is possible to generate an image as if the load capacity scale 43 was projected in the mixer drum 20. ..

Further, the load capacity scale 43 is tilted in the direction in which the mixer drum 20 rotates with respect to the horizontal, and the magnitude of this tilt changes according to the slump value. The smaller the slump value, the larger the slump value, and the larger the slump value. It becomes smaller. In the storage unit 52, a load capacity scale 43 corresponding to a plurality of slump values including the slump value of the ready-mixed concrete on the market is mapped and stored. The interval of the load capacity scale 43 ^{is not limited to 0.5 m 3} increments as shown in FIG. 6, and can be set at any interval.

The estimation unit 53 estimates the amount of ready-mixed concrete in the mixer drum 20 based on the load capacity scale 43 displayed on the composite image 41 and the position of the liquid level of the ready-mixed concrete displayed on the composite image 41. Specifically, for example, on the composite image 41, between an arbitrary point on the boundary line between the liquid level of the ready-mixed concrete and the cover member 25 displayed on the composite image 41 and two scales adjacent to this point. The distance between the two scales is calculated, and the scale of the two scales located near an arbitrary point on the boundary line is displayed as the estimated amount of ready-mixed concrete. When the boundary line between the liquid level of the ready-mixed concrete and the cover member 25 is located between the two scales, the estimated amount of the ready-mixed concrete may be calculated by the interpolation method. Since the amount of ready-mixed concrete can be easily estimated by the operator by looking at the composite image 41 displayed on the display unit 32, when it is difficult to recognize the boundary line between the liquid level of the ready-mixed concrete and the cover member 25, The amount of ready-mixed concrete may not be estimated by the estimation unit 53.

The inclination determination unit 54 determines the degree of inclination of the mobile terminal 30 with respect to the horizontal state based on the detection value detected by the inclination detection unit 34. It is preferable that the mobile terminal 30 takes a picture in a horizontal state, but the mobile terminal 30 is kept in a horizontal state when taking a picture by looking into the inside of the seal pipe 24 from above the hopper 13. This is difficult, and as shown in FIG. 5, the main body of the mobile terminal 30 may be tilted with respect to the vertical direction. In order to compensate for the inclination of the mobile terminal 30, the degree of inclination of the mobile terminal 30 determined by the inclination determination unit 54 is sent to the image processing unit 51 and the guide display unit 55.

The guide display unit 55 displays the first imaging guide 44 and the second imaging guide 45 on the display unit 32 as shown in FIG. 5 when the operator photographs the inside of the mixer drum 20 with the mobile terminal 30. The first imaging guide 44 promotes photographing so that the position of the cover member 25, which is predicted to be the center point 42 of the captured image 40, comes to the center of the captured image 40. The second imaging guide 45 prompts the user to take a picture when the positions of the blades 22 and 23 rotating together with the mixer drum 20 come to a predetermined position.

Here, the liquid level position of the ready-mixed concrete in the rotating mixer drum 20 changes to some extent by changing the positions of the blades 22 and 23 that agitate the ready-mixed concrete. Therefore, in order to more accurately grasp the amount of ready-mixed concrete in the mixer drum 20 based on the captured image 40, it is necessary to capture the captured image 40 when the positions of the blades 22 and 23 are the same each time. For this reason, the guide display unit 55 displays on the display unit 32 a second imaging guide 45 that prompts the rotation position of the mixer drum 20 at the time of imaging to be the same position each time.

The second imaging guide 45 shown in FIG. 5 prompts the user to take a picture when the connecting side 24d of the seal pipe 24, which is easy for the operator to see, reaches the position indicated by the second imaging guide 45. That is, the second imaging guide 45 does not guide the positions of the blades 22 and 23 to a predetermined position, but guides the position of the connection side 24d of the seal pipe 24 to a predetermined position. In this way, the positions of the members (in this embodiment, for example, the connecting side 24d of the seal pipe 24) that are members of the mixer drum 20 other than the blades 22 and 23 and are easily visible to the operator are guided to a predetermined position. By doing so, it becomes easy to set the positions of the blades 22 and 23 at the time of imaging to the same position each time.

The second imaging guide 45 is not limited to guiding the position of the connection side 24d of the seal pipe 24 to a predetermined position, for example, the positions of the ends 22c and 23c of the front blades 22a and 23a and the front blades. It may be urged to take a picture when the position of the boundary portion between the 22a and 23a and the rear blades 22b and 23b reaches a predetermined position. In this case, even if the mixer drum 20 is not provided with the seal pipe 24, it is possible to take a picture when the positions of the blades 22 and 23 come to the same position each time. Further, in the example shown in FIG. 5, the second imaging guide 45 is displayed at a horizontal position, but the position of the second imaging guide 45 is not limited to this, and even if it is a position along the vertical direction. It may be a position having a predetermined angle with respect to the vertical direction.

Further, when the tilt determination unit 54 determines the tilt of the mobile terminal 30, the guide display unit 55 determines the second image pickup guide 45 as the center of the first image pickup guide 44 by the tilt determination unit 54. Displace by the amount of inclination. As a result, even when the operator tilts the mobile terminal 30 to take a picture as shown in FIG. 5, it is possible to urge the operator to take a picture when the position of the connection side 24d reaches a predetermined position.

Next, a method of displaying the amount of ready-mixed concrete in the mixer drum 20 using the mobile terminal 30 will be described with reference to the flowchart of FIG. 7.

When the ready-mixed concrete amount display method is not executed, the display unit 32 of the mobile terminal 30 has an icon (not shown) for activating the ready-mixed concrete amount display program for displaying the ready-mixed concrete amount in the mixer drum 20 on the mobile terminal 30. Is displayed. By touching this icon, the ready-mixed concrete amount display program is activated and the display of the ready-mixed concrete amount by the mobile terminal 30 is started. That is, the ready-mixed concrete amount display method is pre-installed in the mobile terminal 30 as application software. When the mobile terminal 30 is a dedicated machine that only displays the amount of ready-mixed concrete, the display of the amount of ready-mixed concrete is started by turning on the power of the mobile terminal 30.

When the ready-mixed concrete amount display program is started, first, in step S11, the input of the slump value of the ready-mixed concrete in the mixer drum 20 is requested. In step S11, the slump value measured in advance by a known method using a slump cone is input to the display unit 32 of the mobile terminal 30 by the operator. The slump value is not limited to the slump value obtained by the method using the slump cone, and may be obtained by another method.

When the slump value is input, the process proceeds to step S12 as the imaging step, and the guide display unit 55 displays the first imaging guide 44 and the second imaging guide 45 on the display unit 32 of the mobile terminal 30, and the mobile terminal. 30 is in a state where the inside of the mixer drum 20 can be imaged by the camera 31. In this state, the operator looks at the display unit 32 and sees the cover member 25 inside the first imaging guide 44, and the position of the connecting side 24d of the seal pipe 24 of the mixer drum 20 that rotates at a constant rotation speed. However, shooting is performed at the timing when the position indicated by the second imaging guide 45 is reached. The rotation speed of the mixer drum 20 at the time of photographing is set to the same speed each time, and it is preferable to set the mixing speed to a low speed of about 0.8 rpm, for example. If it is difficult to take a picture at the timing when the connection side 24d reaches the position indicated by the second imaging guide 45, the rotation of the mixer drum 20 may be temporarily stopped to take a picture.

When the mobile terminal 30 is tilted with respect to the horizontal plane by the operator during shooting, the second imaging guide 45 is rotationally displaced about the first imaging guide 44 according to the tilt of the mobile terminal 30. Therefore, even when the mobile terminal 30 is tilted, the operator can take a picture at the timing when the positions of the blades 22 and 23 come to the predetermined positions.

In the following step S13, the captured image 40 captured by the mobile terminal 30 is captured by the image processing unit 51. When the image processing unit 51 captures the captured image 40, the image processing unit 51 captures the degree of inclination determined by the tilt determination unit 54 in association with the captured image 40.

In step S14, the captured image 40 captured by the image processing unit 51 in step S13 is corrected to a horizontal state by the image processing unit 51 by the above method based on the associated inclination degree, and is converted into a corrected image. To. If the mobile terminal 30 is not tilted, that is, if the tilt detection unit 34 does not detect the tilt of the mobile terminal 30 itself, the captured image 40 becomes a corrected image as it is.

In step S15, the image processing unit 51 synthesizes the load capacity scale 43 with the corrected image by the above method, and the composite image 41 is generated. As for the load capacity scale 43 to be combined, the scale corresponding to the slump value input in step S11 is extracted from the storage unit 52. A series of steps in which the captured image 40 is captured by the image processing unit 51 and the composite image 41 is generated corresponds to the image synthesis step.

In the following step S16, the estimation unit 53 estimates the amount of ready-mixed concrete by the above-mentioned method based on the composite image 41 generated by the image processing unit 51.

The composite image 41 generated in step S15 and the amount of ready-mixed concrete estimated in step S16 are displayed on the display unit 32 in step S17 as a display step.

Through these steps, as shown in FIG. 6, the display unit 32 of the mobile terminal 30 displays the composite image 41 in which the load capacity scale 43 is combined and the estimated ready-mixed concrete amount. The operator can easily grasp the amount of ready-mixed concrete in the mixer drum 20 of the mixer truck 10 only by looking at the composite image 41 displayed on the display unit 32 of the mobile terminal 30 in this way.

As shown in FIG. 6, the display unit 32 may display the composite image 41, a button for saving the result, a button for retaking the image, a button for changing the slump value, and the like. For example, when the button for saving the result is operated, the composite image 41 and the estimated amount of ready-mixed concrete are saved in the storage unit 52. Further, when the button for reshooting is operated, the process returns to step S12, the shooting becomes possible again, and when the button for changing the slump value is operated, the process returns to step S11 and the slump value can be input again. It becomes a state.

According to the above embodiment, the following effects are obtained.

In the above-mentioned ready-mixed concrete amount display method and ready-mixed concrete amount display program, since the ready-mixed concrete amount in the mixer drum 20 of the mixer truck 10 can be grasped by the mobile terminal 30, the image pickup device, the control device, and the display device are used as in the conventional case. There is no need to assemble it on the mixer truck 10. Therefore, the amount of ready-mixed concrete in the mixer drum 20 can be grasped at low cost.

Further, in the ready-mixed concrete amount display method and the ready-mixed concrete amount display program, a composite in which the load capacity scale 43 corresponding to the slump value of the ready-mixed concrete in the mixer drum 20 is superimposed on the captured image 40 obtained by capturing the inside of the mixer drum 20 of the mixer truck 10. The image 41 is displayed on the display unit 32 of the mobile terminal 30. Therefore, the amount of ready-mixed concrete in the mixer drum 20 of the mixer truck 10 can be easily grasped only by looking at the composite image 41 displayed on the display unit 32 of the mobile terminal 30. In this way, since the amount of ready-mixed concrete in the mixer drum 20 is grasped from the composite image 41 displayed on the display unit 32 of the mobile terminal 30, even an inexperienced worker can easily grasp the amount of ready-mixed concrete. By showing the composite image 41 to the on-site supervisor at the casting site or transmitting the composite image 41 to the ready-mixed concrete factory, it is possible to accurately report the remaining amount of ready-mixed concrete. In addition, it is possible to prevent variations in grasping the amount of ready-mixed concrete in the mixer drum 20 due to differences in worker experience.

Hereinafter, the configurations, actions, and effects of the embodiments of the present invention will be collectively described.

A mobile terminal 30 including a camera 31 capable of photographing the inside of the mixer drum 20 rotatably mounted on the mixer car 10 and a display unit 32 capable of displaying an image captured image 40 in the mixer drum 20 imaged by the camera 31. The method of displaying the amount of ready-mixed concrete in the mixer drum 20 using the ready-mixed concrete amount display method is to set a load capacity scale 43 according to the slump value of the ready-mixed concrete in the mixer drum 20 with respect to the captured image 40 in the mixer drum 20 captured by the camera 31. It includes an image composition step of superimposing and generating a composite image 41, and a display step of displaying the composite image 41 on the display unit 32.

In this configuration, since the amount of ready-mixed concrete in the mixer drum 20 of the mixer truck 10 can be grasped by the mobile terminal 30, it is not necessary to assemble the image pickup device, the control device, and the display device to each mixer truck 10 as in the conventional case. Therefore, the amount of ready-mixed concrete in the mixer drum 20 can be grasped at low cost.

Further, in this configuration, the composite image 41 in which the load capacity scale 43 corresponding to the slump value of the ready-mixed concrete in the mixer drum 20 is superimposed on the captured image 40 obtained by capturing the inside of the mixer drum 20 of the mixer truck 10 is the mobile terminal 30. It is displayed on the display unit 32. Therefore, the amount of ready-mixed concrete in the mixer drum 20 of the mixer truck 10 can be easily grasped only by looking at the composite image 41 displayed on the display unit 32 of the mobile terminal 30. In this way, since the amount of ready-mixed concrete in the mixer drum 20 is grasped from the composite image 41 displayed on the display unit 32 of the mobile terminal 30, even an inexperienced worker can easily grasp the amount of ready-mixed concrete. By showing the composite image 41 to the on-site supervisor at the casting site or transmitting the composite image 41 to the ready-mixed concrete factory, it is possible to accurately report the remaining amount of ready-mixed concrete. In addition, it is possible to prevent variations in grasping the amount of ready-mixed concrete in the mixer drum 20 due to differences in worker experience.

Further, the ready-mixed concrete amount display method further includes an imaging step that enables the camera 31 to image the inside of the mixer drum 20, and in the imaging step, imaging guides 44 and 45 that guide the rotation position of the mixer drum 20 to a predetermined position are provided. It is displayed on the display unit 32.

In this configuration, the image pickup guides 44 and 45 that guide the rotation position of the mixer drum 20 to a predetermined position are displayed on the display unit 32 in a state where the image pickup by the camera 31 is possible. Therefore, by photographing the mixer drum 20 in accordance with the imaging guides 44 and 45, the rotation position of the mixer drum 20 can be set to the same position each time. In this way, by making the imaging conditions the same each time, the influence that the liquid level position of the ready-mixed concrete changes according to the positions of the blades 22 and 23 is eliminated, and as a result, the amount of ready-mixed concrete is grasped more accurately. be able to.

Further, the mobile terminal 30 further includes an inclination detection unit 34 for detecting the inclination of the mobile terminal 30 with respect to a horizontal plane, and in the image synthesis step, the mobile terminal 30 detected by the inclination detection unit 34 when the captured image 40 is captured. A corrected image in which the captured image 40 is corrected to a horizontal state is generated based on the inclination of, and the load capacity scale 43 is superimposed on the corrected image.

In this configuration, the load capacity scale 43 is superimposed on the corrected image obtained by correcting the captured image 40 to the horizontal state based on the inclination of the mobile terminal 30. Therefore, even if the image is taken with the mobile terminal 30 tilted, the composite image 41 is generated by superimposing the load capacity scale 43 on the corrected image corrected to the horizontal state, so that the composite image 41 is viewed. Therefore, the amount of ready-mixed concrete in the mixer drum 20 can be easily grasped.

Further, the load capacity scale 43 indicates the height of the liquid level of the ready-mixed concrete in the mixer drum 20 that changes according to the amount of ready-mixed concrete in the mixer drum 20, and the inclination of the load capacity scale 43 changes according to the slump value. To do.

In this configuration, the inclination of the load capacity scale 43 for grasping the amount of ready-mixed concrete in the mixer drum 20 changes according to the slump value. That is, since the load capacity scale 43 combined with the captured image 40 is appropriately changed according to the slump value of the ready-mixed concrete in the mixer drum 20, the composite image 41 is viewed even when the slump value of the ready-mixed concrete is changed. Therefore, the amount of ready-mixed concrete in the mixer drum 20 can be easily grasped.

Further, the mobile terminal 30 further includes an input unit 33 capable of inputting the slump value of the ready-mixed concrete in the mixer drum 20, and in the image composition step, the load capacity scale 43 corresponding to the slump value input via the input unit 33 is provided. It is superimposed on the captured image 40.

In this configuration, the composite image 41 is generated by superimposing the load capacity scale 43 corresponding to the slump value input via the input unit 33 on the captured image 40. Therefore, even when the slump value of the ready-mixed concrete changes, the amount of ready-mixed concrete in the mixer drum 20 can be easily grasped by looking at the composite image 41.

Further, a portable terminal including a camera 31 capable of photographing the inside of the mixer drum 20 rotatably mounted on the mixer car 10 and a display unit 32 capable of displaying the captured image 40 in the mixer drum 20 imaged by the camera 31. The ready-mixed concrete amount display program that controls 30 and displays the amount of ready-mixed concrete in the mixer drum 20 is a slump value of the ready-mixed concrete in the mixer drum 20 with respect to the captured image 40 in the mixer drum 20 captured by the camera 31 on the mobile terminal 30. An image composition step of superimposing the load capacity scales 43 according to the above to generate the composite image 41 and a display step of displaying the composite image 41 on the display unit 32 are executed.

In this configuration, since the amount of ready-mixed concrete in the mixer drum 20 of the mixer truck 10 can be grasped by the mobile terminal 30, it is not necessary to assemble the image pickup device, the control device, and the display device to each mixer truck 10 as in the conventional case. Therefore, the amount of ready-mixed concrete in the mixer drum 20 can be grasped at low cost.

Further, in this configuration, the composite image 41 in which the load capacity scale 43 corresponding to the slump value of the ready-mixed concrete in the mixer drum 20 is superimposed on the captured image 40 obtained by capturing the inside of the mixer drum 20 of the mixer truck 10 is the mobile terminal 30. It is displayed on the display unit 32. Therefore, the amount of ready-mixed concrete in the mixer drum 20 of the mixer truck 10 can be easily grasped only by looking at the composite image 41 displayed on the display unit 32 of the mobile terminal 30.

Although the embodiments of the present invention have been described above, the above embodiments are only a part of the application examples of the present invention, and the technical scope of the present invention is limited to the specific configurations of the above embodiments. Absent.

10 ... Mixer car, 20 ... Mixer drum, 22, 23 ... Blade, 24 ... Seal pipe, 25 ... Cover member, 30 ... Mobile terminal, 31 ... Camera (imaging unit) ), 32 ... Display unit, 33 ... Input unit, 34 ... Tilt detection unit, 40 ... Captured image, 41 ... Composite image, 42 ... Center point (center of rotation), 43 ... Load capacity scale, 44 ... 1st image pickup guide (imaging guide), 45 ... 2nd image pickup guide (imaging guide), 50 ... controller, 51 ... image processing unit, 52 ... -Storage unit, 53 ... estimation unit, 54 ... tilt determination unit, 55 ... guide display unit

Claims (6)

The mixer drum is provided by using a mobile terminal provided with an imaging unit capable of photographing the inside of a mixer drum rotatably mounted on a mixer truck and a display unit capable of displaying an image captured in the mixer drum imaged by the imaging unit. It is a method of displaying the amount of ready-mixed concrete inside, which is a method of displaying the amount of ready-mixed concrete.
An image composition step of superimposing a load capacity scale corresponding to the slump value of ready-mixed concrete in the mixer drum on the image captured in the mixer drum captured by the imaging unit to generate a composite image.
A display step for displaying the composite image on the display unit, and
A method for displaying the amount of ready-mixed concrete, which comprises. It further includes an imaging step that enables the imaging unit to image the inside of the mixer drum.
The ready-mixed concrete amount display method according to claim 1, wherein in the imaging step, an imaging guide for guiding the rotation position of the mixer drum to a predetermined position is displayed on the display unit. The mobile terminal further includes an inclination detection unit that detects the inclination of the mobile terminal with respect to a horizontal plane.
In the image synthesis step, a corrected image obtained by correcting the captured image to a horizontal state based on the tilt of the mobile terminal detected by the tilt detecting unit when the captured image is captured is generated, and the corrected image is used as the corrected image. The ready-mixed concrete amount display method according to claim 1 or 2, wherein the load capacity scales are overlapped with each other. The load capacity scale indicates the height of the liquid level of the ready-mixed concrete in the mixer drum, which changes according to the amount of ready-mixed concrete in the mixer drum, and the inclination of the load capacity scale depends on the slump value. The ready-mixed concrete amount display method according to any one of claims 1 to 3, wherein the ready-mixed concrete amount changes. The mobile terminal further includes an input unit capable of inputting the slump value of the ready-mixed concrete in the mixer drum.
In the image composition step, any one of claims 1 to 4, wherein the load capacity scale corresponding to the slump value input via the input unit is superimposed on the captured image. The method of displaying the amount of ready-mixed concrete described in. A mobile terminal having an image pickup unit capable of photographing the inside of a mixer drum rotatably mounted on a mixer truck and a display unit capable of displaying an image captured in the mixer drum imaged by the image pickup unit is controlled. It is a ready-mixed concrete amount display program that displays the amount of ready-mixed concrete in the mixer drum.
To the mobile terminal
An image composition step of superimposing a load capacity scale corresponding to the slump value of ready-mixed concrete in the mixer drum on the image captured in the mixer drum captured by the imaging unit to generate a composite image.
A ready-mixed concrete amount display program characterized by executing a display step of displaying the composite image on the display unit.

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