JP6894834B2 - Ready-mixed concrete status display method and ready-mixed concrete status display program - Google Patents

Description

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

Patent Document 1 discloses a slump value estimation device that estimates the slump value of ready-mixed concrete in a 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 slump value estimation device, the slump value is estimated based on the driving oil pressure of the hydraulic motor that rotationally drives the mixer drum.

Japanese Unexamined Patent Publication No. 2014-4769

However, in order to estimate the slump value of the ready-mixed concrete in the mixer drum by the slump value estimation device described in Patent Document 1, a sensor for detecting the driving oil pressure of the hydraulic motor and a sensor for grasping the state of the vehicle are used. It is necessary to install a calculation device that calculates and processes the output values output from these various sensors on the mixer truck. Therefore, in order to grasp the slump value of a plurality of mixer trucks, these sensors must be assembled to all the mixer trucks, and the cost required to grasp the slump value 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 slump value 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 state display method for displaying the state of ready-mixed concrete in the mixer drum by using the slump value scale according to the load capacity of the ready-mixed concrete in the mixer drum for the first captured image in the mixer drum imaged by the imaging unit. It is characterized by including a first image composition step of superimposing and generating a first composite image, and a first display step of displaying the first composite image on a display unit.

In the first invention, the display unit of the mobile terminal is a first composite image in which a slump value scale corresponding to the load capacity of ready-mixed concrete in the mixer drum is superimposed on the first captured image captured in the mixer drum of the mixer truck. Is displayed in. Therefore, the slump value of the ready-mixed concrete in the mixer drum can be easily grasped only by looking at the first composite image displayed on the display unit of the mobile terminal. As described above, in the first invention, since it is not necessary to newly assemble the sensor and the arithmetic unit to each mixer truck, it is possible to grasp the slump value of the ready-mixed concrete in the mixer drum at low cost.

In the second invention, the ready-mixed concrete state 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 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 first image synthesis step, the mobile terminal detected by the inclination detection unit when the captured image is captured. A corrected image in which the captured image is corrected to a horizontal state is generated based on the inclination of, and the slump value scale is superimposed on the corrected image.

In the third invention, the slump value 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 first composite image is generated by superimposing the slump value scale on the corrected image corrected to the horizontal state, so that the first composite image is viewed. Therefore, the slump value in the mixer drum can be easily grasped.

The fourth invention is characterized in that the slump value scale is a scale indicating the inclination of the liquid level of the ready-mixed concrete in the mixer drum, which changes according to the slump value of the ready-mixed concrete in the mixer drum.

In the fourth invention, the slump value scale indicates how the inclination of the liquid level of the ready-mixed concrete in the mixer drum changes according to the slump value of the ready-mixed concrete in the mixer drum. By including such a slump value scale in the first composite image, the determination criteria for determining the slump value becomes clear. As a result, the slump value of the ready-mixed concrete in the mixer drum can be easily estimated from the position of the liquid level of the ready-mixed concrete in the mixer drum and the slump value scale in the first composite image.

In the fifth invention, the mobile terminal further includes an input unit capable of inputting the load capacity of ready-mixed concrete in the mixer drum, and in the first image composition step, a slump value according to the load capacity input via the input unit. The scale is superposed on the first captured image.

In the fifth invention, the first composite image is generated by superimposing the slump value scale according to the load capacity of the ready-mixed concrete in the mixer drum on the first captured image. In this way, the slump value scale, which is a criterion for determining the slump value, is changed according to the load capacity loaded in the mixer drum. Therefore, even when the load capacity of the ready-mixed concrete is changed, the slump value of the ready-mixed concrete in the mixer drum can be easily grasped by looking at the first composite image.

In the sixth invention, the ready-mixed concrete state display method superimposes the load capacity scale according to the slump value estimated from the first composite image on the second captured image in the mixer drum captured by the imaging unit. It is characterized by further including a second image composition step of generating a second composite image and a second display step of displaying the second composite image on the display unit.

In the sixth invention, the second composite image in which the load capacity scale corresponding to the slump value estimated from the first composite image is superimposed on the second captured image captured in the mixer drum of the mixer truck is the mobile terminal. It is displayed on the display. Therefore, the amount of ready-mixed concrete in the mixer drum can be easily grasped by looking at the second composite image displayed on the display unit of the mobile terminal.

The seventh 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. A ready-mixed concrete state display program that controls and displays the state of ready-mixed concrete in the mixer drum is applied to the mobile terminal to the load capacity of ready-mixed concrete in the mixer drum with respect to the first captured image in the mixer drum captured by the imaging unit. It is characterized in that the first image composition step of superimposing the corresponding slump value scales to generate the first composite image and the first display step of displaying the first composite image on the display unit are executed.

In the seventh invention, the display unit of the mobile terminal is a first composite image in which a slump value scale corresponding to the load capacity of ready-mixed concrete in the mixer drum is superimposed on the first captured image captured in the mixer drum of the mixer truck. Is displayed in. Therefore, the slump value of the ready-mixed concrete in the mixer drum can be easily grasped only by looking at the first composite image displayed on the display unit of the mobile terminal. As described above, in the seventh invention, since it is not necessary to newly assemble the sensor and the arithmetic unit to each mixer truck, it is possible to grasp the slump value of the ready-mixed concrete in the mixer drum at low cost.

In the eighth invention, the ready-mixed concrete state display program has a load capacity scale according to the slump value estimated from the first composite image with respect to the second captured image in the mixer drum captured by the imaging unit on the mobile terminal. It is characterized in that the second image composition step of superimposing the above to generate the second composite image and the second display step of displaying the second composite image on the display unit are further executed.

In the eighth invention, the second composite image in which the load capacity scale corresponding to the slump value estimated from the first composite image is superimposed on the second captured image captured in the mixer drum of the mixer truck is the mobile terminal. It is displayed on the display. Therefore, the amount of ready-mixed concrete in the mixer drum can be easily grasped by looking at the second composite image displayed on the display unit of the mobile terminal.

According to the present invention, the slump value 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 state of ready-mixed concrete in a mixer drum by the ready-mixed concrete state 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 state 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 slump value of the ready-mixed concrete in a mixer drum. It is a flowchart which shows the procedure which displays the slump value on the mobile terminal by the ready-mixed concrete state display method which concerns on embodiment of this invention. It is a flowchart which shows the procedure which displays the amount of ready-mixed concrete on a mobile terminal by the ready-mixed concrete state display method which concerns on embodiment of this invention. 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.

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

First, with reference to FIGS. 1 to 3, the overall configuration of the mixer truck 10 in which the state of the ready-mixed concrete in the mixer drum is displayed by the ready-mixed concrete state display method according to the embodiment of the present invention will be 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 slump value of the 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 1st composite image 41 which will be described later.

The mobile terminal 30 is a small portable terminal such as a smartphone or tablet, and is composed of a camera 31 as an image pickup unit capable of capturing an image of the inside of the mixer drum 20 and a first captured image 40 as an image captured by the camera 31. It is possible to input the controller 50 capable of generating the first composite image 41 as a composite image, the display unit 32 displaying the first composite image 41 generated by the controller 50, and the load capacity of the ready-mixed camera loaded in the mixer drum 20. The input unit 33 and the tilt detection unit 34 capable of detecting the tilt of the main body of the mobile terminal 30 are 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 attached 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 first 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 first captured image 40 captured by the camera 31, and as shown in FIG. 6, the first composite generated by the controller 50. It functions as a monitor for displaying the image 41. 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 first captured image 40 captured by the camera 31 and processes the image to generate the first composite image 41, and the image processing unit 51 first synthesizes the first image. The slump value scale 43 used when generating the image 41, the storage unit 52 in which the first composite image 41 generated by the image processing unit 51 is stored, and the slump value of the ready-mixed computer in the mixer drum 20 from the first composite image 41. The estimation unit 53 that estimates the image, 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 the inclination detection unit 34, and the display when the inside of the mixer drum 20 is photographed. The unit 32 includes a guide display unit 55 that displays the image pickup guides 44 and 45. 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.

The image processing unit 51 estimates from the first captured image 40 in which 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 captured, and uses the center point 42 as a reference. , The slump value scale 43 stored in advance in the storage unit 52 is synthesized. The first composite image 41 generated in this way is sent to the display unit 32, the estimation unit 53, and the storage unit 52. The position of the center point 42 in the first captured image 40 is the mixer drum 20 such as the circular outer edge of the cover member 25 in the first captured image 40, the arrangement of the blades 22 and 23, and the position of the hypotenuse 24c of the seal pipe 24. It is estimated by image processing based on the positions of the constituent members.

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 tilts the slump value scale 43 before synthesizing it with the first captured image 40. A correction image (not shown) obtained by correcting the first captured image 40 to a horizontal state is generated according to the degree of inclination of the mobile terminal 30 determined by the determination unit 54. Specifically, a corrected image corrected to a horizontal state is generated by tilting the first 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 corrected with respect to the generated corrected image. And synthesize the slump value scale 43.

The storage unit 52 stores the first composite image 41 generated by the image processing unit 51, and stores the slump value scale 43 combined with the first captured image 40 by the image processing unit 51 in advance. As shown in FIG. 6, the slump value scale 43 is a scale showing the inclination of the liquid level of the ready-mixed concrete in the ready-mixed concrete 20 that changes according to the slump value. It shows how the inclination of the liquid level of ready-mixed concrete changes.

Here, the liquid level of the ready-mixed concrete in the mixer drum 20 that rotates at a predetermined rotation speed is tilted in the direction in which the mixer drum 20 rotates with respect to the horizontal, and the magnitude of this tilt increases as the slump value decreases, and the slump The larger the value, the smaller it tends to be. Further, the height of the liquid level of the ready-mixed concrete changes according to the load capacity of the ready-mixed concrete loaded in the mixer drum 20. Therefore, the slump value scale 43 is set based on the results obtained in advance by experiments and simulations on how the inclination of the liquid level of the ready-mixed concrete in the mixer drum 20 changes depending on the slump value and the load capacity.

The slump value scale 43 set in this way is stored in advance in the storage unit 52 as a map showing the relationship between the slump value, the load capacity, and the inclination of the liquid level of the ready-mixed concrete. From the storage unit 52 to the image processing unit 51, the relationship between the slump value and the inclination of the liquid level of the ready-mixed concrete when the loaded amount of the ready-mixed concrete loaded in the mixer drum 20 is the loaded amount input via the input unit 33. Is sent as the slump value scale 43. The interval of the slump value scale 43 is not limited to the interval shown in FIG. 6, and can be set at any interval.

Further, the slump value scale 43 is created based on the position of the rotation axis C1 of the mixer drum 20. Therefore, as described above, by synthesizing the slump value scale 43 in accordance with the center point 42 of the first captured image 40, an image as if the slump value scale 43 is projected in the mixer drum 20 is generated. Can be done.

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

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 first captured image 40, comes to the center of the first 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 slump value in the mixer drum 20 based on the first captured image 40, it is necessary to capture the first captured image 40 when the positions of the blades 22 and 23 are the same each time. is there. 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 directly guide the positions of the blades 22 and 23 to the predetermined positions, but guides the positions of the connection sides 24d of the seal pipe 24 to the predetermined positions to guide the blades 22 and 23. It indirectly guides the position of 23. 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 slump value display method as a ready-mixed concrete state display method for displaying the slump value of the 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 slump value display method is not executed, the display unit 32 of the mobile terminal 30 starts a slump value display program as a ready-mixed concrete state display program for displaying the slump value of the ready-mixed concrete in the mixer drum 20 on the mobile terminal 30. An icon (not shown) is displayed. By touching this icon, the slump value display program is activated and the display of the slump value by the mobile terminal 30 is started. That is, the slump value 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 slump value, the display of the slump value is started by turning on the power of the mobile terminal 30.

When the slump value display program is started, first, in step S11, it is required to input the load capacity of the ready-mixed concrete currently loaded in the mixer drum 20. For example, when the ready-mixed concrete is put into the mixer drum 20 at the ready-mixed concrete factory and has not been discharged yet, the ready-mixed concrete input amount measured at the ready-mixed concrete factory is input to the input unit 33 of the mobile terminal 30 by the operator. The load capacity of the ready-mixed concrete is not limited to the input amount measured at the ready-mixed concrete factory, and may be, for example, a load capacity estimated from a change in the weight of the mixer drum 20.

When the load capacity is input, the process proceeds to step S12, the first imaging guide 44 and the second imaging guide 45 are displayed on the display unit 32 of the mobile terminal 30 by the guide display unit 55, and the mobile terminal 30 is displayed by the camera 31. The inside of the mixer drum 20 can be imaged. 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 first captured image 40 in which the inside of the mixer drum 20 in the state where the ready-mixed concrete with the loaded amount input in step S11 is loaded is captured by the mobile terminal 30 is taken into the image processing unit 51. When the first captured image 40 is captured, the image processing unit 51 captures the degree of inclination determined by the tilt determination unit 54 in association with the first captured image 40.

In step S14, the first captured image 40 captured by the image processing unit 51 in step S13 is in a horizontal state by the image processing unit 51 by the above method based on the degree of inclination captured in association with the first captured image 40. It is corrected to and converted into a corrected image. 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 main body, the first captured image 40 becomes a corrected image as it is.

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

In the following step S16, the estimation unit 53 estimates the slump value by the above-mentioned method based on the first composite image 41 generated by the image processing unit 51.

The first composite image 41 generated in step S15 and the slump value estimated in step S16 are displayed on the display unit 32 in step S17 as the first display step.

Through these steps, as shown in FIG. 6, the display unit 32 of the mobile terminal 30 displays the first composite image 41 in which the slump value scale 43 is combined and the estimated slump value. The operator can easily grasp the slump value in the mixer drum 20 of the mixer truck 10 only by looking at the first 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 a button for saving the result, a button for retaking the image, a button for changing the load capacity, and the like, together with the first composite image 41. For example, when the button for saving the result is operated, the first composite image 41 and the estimated slump value are saved in the storage unit 52. Further, when the button for reshooting is operated, the process returns to step S12, and the shooting is possible again. When the button for changing the load capacity is operated, the screen returns to step S11 and the load capacity can be input again. It becomes a state. Further, when it is difficult to recognize the boundary line between the liquid level of the ready-mixed concrete and the cover member 25, the estimation unit 53 clearly estimates an erroneous slump value. Therefore, a correction function may be added to correct the estimated slump value to the value estimated by the operator by looking at the first composite image 41.

The slump value displayed or estimated by the above-mentioned slump value display method is a ready-mixed concrete amount display method as a ready-mixed concrete state display method for displaying the ready-mixed concrete amount in the mixer drum 20 (hereinafter, referred to as "ready-mixed concrete amount display method"). Used in. Similar to the slump value display method, the ready-mixed concrete amount display method is performed by imaging the inside of the mixer drum 20 with the mobile terminal 30.

Hereinafter, a specific procedure of the ready-mixed concrete amount display method will be described with reference to FIGS. 8 and 9.
FIG. 8 is a flowchart showing a procedure for displaying the ready-mixed concrete amount on the mobile terminal 30 by the ready-mixed concrete amount display method, and FIG. 9 is a diagram showing a display unit 32 of the mobile terminal 30 on which an image showing the ready-mixed concrete amount is displayed. ..

When the display or estimation of the slump value by the slump value display method is completed, the display unit 32 of the mobile terminal 30 displays the amount of ready-mixed concrete in the mixer drum 20 as a ready-mixed concrete state display program for displaying the amount of ready-mixed concrete in the mixer drum 20. An icon (not shown) for starting the program 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, similarly to the slump value display method.

The ready-mixed concrete amount display program may be incorporated into the slump value display program, and the program may be shifted to the ready-mixed concrete amount display program when the display or estimation of the slump value of the ready-mixed concrete is completed by the mobile terminal 30. In this case, the ready-mixed concrete amount display method is executed following the slump value display method.

When the ready-mixed concrete amount display program is started, first, in step S21, the input of the slump value of the ready-mixed concrete in the mixer drum 20 is requested. In step S11, the slump value grasped from the first composite image 41 displayed on the display unit 32 by the above-mentioned slump value display method is input to the display unit 32 of the mobile terminal 30 by the operator. Instead of the input by the operator, the slump value estimated by the above-mentioned slump value display method may be input as an initial value. If time has passed since the above-mentioned slump value display method was executed and there is a possibility that the slump value has changed, the slump value measured by a known method using a slump cone is input. May be good.

When the slump value is input, the process proceeds to step S22, 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 in the same manner as in step S12. The 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.

In the following step S23, a second captured image (not shown) as a captured image captured by the mobile terminal 30 is captured by the image processing unit 51. When the second captured image is captured, the image processing unit 51 captures the degree of inclination determined by the tilt determination unit 54 in association with the second captured image.

In step S24, the second captured image captured by the image processing unit 51 in step S23 is corrected to the horizontal state by the image processing unit 51 by the above-mentioned method, as in step S14, based on the associated inclination degree. Is converted to a corrected image (not shown).

In step S25, the image processing unit 51 synthesizes the load capacity scale 49 with the corrected image, and the second composite image 47 is generated. Since the composition of the load capacity scale 49 on the corrected image is performed in the same procedure as the procedure for synthesizing the slump value scale 43 on the corrected image, the description thereof will be omitted. In this way, a series of steps in which the image processing unit 51 captures the second captured image and generates the second composite image 47 corresponds to the second image synthesis step.

The load capacity scale 49 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 the position of the rotation axis C1 of the mixer drum 20 like the slump value scale 43. It is created based on. Therefore, by synthesizing the load capacity scale 49 in accordance with the center point 48 of the second captured image, it is possible to generate an image as if the load capacity scale 49 was projected in the mixer drum 20.

In the storage unit 52, load capacity scales 49 corresponding to a plurality of slump values including slump values of ready-mixed concrete distributed in the market are mapped and stored, and the load capacity scales synthesized in step S25 are stored. In 49, the scale corresponding to the slump value input in step S21 is extracted from the storage unit 52. The interval of the load capacity scale 49 is not limited to the interval shown in FIG. 9, and can be set at any interval.

In the following step S26, the estimation unit 53 estimates the amount of ready-mixed concrete by the above-mentioned method based on the second composite image 47 generated by the image processing unit 51. Specifically, for example, on the second composite image 47, an arbitrary point on the boundary line between the liquid level of the ready-mixed concrete and the cover member 25 displayed in the second composite image 47, and two scales adjacent to this point. And, the distance between and is calculated respectively, 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 second composite image 47 displayed on the display unit 32, it is difficult to recognize the boundary line between the liquid level of the ready-mixed concrete and the cover member 25. It is not necessary for the estimation unit 53 to estimate the amount of ready-mixed concrete.

The second composite image 47 generated in step S25 and the amount of ready-mixed concrete estimated in step S26 are displayed on the display unit 32 in step S27 as the second display step.

Through these steps, as shown in FIG. 9, the display unit 32 of the mobile terminal 30 displays the second composite image 47 in which the load capacity scale 49 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 second composite image 47 displayed on the display unit 32 of the mobile terminal 30 in this way.

As shown in FIG. 9, the display unit 32 may display the second composite image 47, 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 second composite image 47 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 S22, and the shooting is possible again. When the button for changing the slump value is operated, the process returns to step S21 and the slump value can be input again. It becomes a state. Further, when it is difficult to recognize the boundary line between the liquid level of the ready-mixed concrete and the cover member 25, the estimation unit 53 clearly estimates the wrong amount of ready-mixed concrete. Therefore, a correction function may be added to correct the estimated ready-mixed concrete amount to the value estimated by the operator by looking at the second composite image 47.

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

In the ready-mixed concrete state display method and the ready-mixed concrete state display program described above, the slump value scale 43 corresponding to the load capacity of the ready-mixed concrete in the mixer drum 20 is set with respect to the first captured image 40 obtained by imaging the inside of the mixer drum 20 of the mixer truck 10. The superimposed first composite image 41 is displayed on the display unit 32 of the mobile terminal 30. Therefore, the slump value of the ready-mixed concrete in the mixer drum 20 can be easily grasped only by looking at the first composite image 41 displayed on the display unit 32 of the mobile terminal 30. As described above, in the ready-mixed concrete state display method and the ready-mixed concrete state display program, it is not necessary to newly attach a sensor or an arithmetic unit to each mixer truck 10, so that the slump value of the ready-mixed concrete in the mixer drum 20 can be grasped at low cost. Is possible.

Further, in the above-mentioned ready-mixed concrete state display method and ready-mixed concrete state display program, the determination standard for determining the slump value becomes clear at a glance by superimposing the slump value scale 43 on the first captured image 40. Therefore, even an inexperienced worker can easily grasp the slump value, and the first composite image 41 displayed on the display unit 32 of the mobile terminal 30 can be sent to the site supervisor at the casting site. It is possible to easily report a more accurate slump value by showing or transmitting the first composite image 41 to the ready-mixed concrete factory. In addition, it is possible to prevent the grasping of the slump value of the ready-mixed concrete in the mixer drum 20 from being uneven due to the difference in the experience of the operator.

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 in the mixer drum 20 captured by the camera 31 is used. The ready-mixed concrete state display method for displaying the slump value of the ready-mixed concrete in the mixer drum 20 is a slump according to the load capacity of the ready-mixed concrete in the mixer drum 20 with respect to the first captured image 40 in the mixer drum 20 imaged by the camera 31. It includes a first image composition step of superimposing the value scales 43 to generate the first composite image 41, and a first display step of displaying the first composite image 41 on the display unit 32.

In this configuration, the first composite image 41 in which the slump value scale 43 according to the load capacity of the ready-mixed concrete in the mixer drum 20 is superimposed on the first captured image 40 obtained by imaging the inside of the mixer drum 20 of the mixer truck 10 is a mobile terminal. It is displayed on the display unit 32 of 30. Therefore, the slump value of the ready-mixed concrete in the mixer drum 20 can be easily grasped only by looking at the first composite image 41 displayed on the display unit 32 of the mobile terminal 30. As described above, in this configuration, since it is not necessary to newly assemble the sensor and the arithmetic unit to each mixer truck 10, it is possible to grasp the slump value of the ready-mixed concrete in the mixer drum 20 at low cost.

Further, in this configuration, the slump value scale 43 is superimposed on the first captured image 40, so that the determination standard for determining the slump value becomes clear at a glance. Therefore, even an inexperienced worker can easily grasp the slump value, and the first composite image 41 displayed on the display unit 32 of the mobile terminal 30 can be sent to the site supervisor at the casting site. It is possible to easily report a more accurate slump value by showing or transmitting the first composite image 41 to the ready-mixed concrete factory. In addition, it is possible to prevent the grasping of the slump value of the ready-mixed concrete in the mixer drum 20 from being uneven due to the difference in the experience of the operator.

Further, the ready-mixed concrete state 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, the imaging guides 44 and 45 that guide the rotation position of the mixer drum 20 to a predetermined position. 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 slump value 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 the horizontal plane, and in the first image synthesis step, the inclination detection unit 34 detects when the first captured image 40 is captured. A corrected image obtained by correcting the first captured image 40 to a horizontal state is generated based on the inclination of the mobile terminal 30, and the slump value scale 43 is superimposed on the corrected image.

In this configuration, the slump value scale 43 is superimposed on the corrected image obtained by correcting the first 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 first composite image 41 is generated by superimposing the slump value scale 43 on the corrected image corrected to the horizontal state, so that the first composite image 41 is composited. By looking at the image 41, the slump value in the mixer drum 20 can be easily grasped.

Further, the slump value scale 43 is a scale indicating the inclination of the liquid level of the ready-mixed concrete in the mixer drum 20 that changes according to the slump value of the ready-mixed concrete in the mixer drum 20.

In this configuration, the slump value scale 43 indicates how the inclination of the liquid level of the ready-mixed concrete in the mixer drum 20 changes according to the slump value of the ready-mixed concrete in the mixer drum 20. By including such a slump value scale 43 in the first composite image 41, the determination criteria for determining the slump value becomes clear. As a result, even an inexperienced worker can easily estimate the slump value of the ready-mixed concrete in the mixer drum 20 from the position of the liquid level of the ready-mixed concrete in the mixer drum 20 and the slump value scale 43 in the first composite image 41. Can be done.

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

The position of the liquid level of the ready-mixed concrete in the mixer drum 20 changes according to the load capacity. In this configuration, the slump value scale 43 according to the load capacity of the ready-mixed concrete in the mixer drum 20 is superimposed on the first captured image 40. The first composite image 41 is generated. In this way, the slump value scale 43, which is a determination standard for determining the slump value according to the load capacity loaded in the mixer drum 20, is changed. Therefore, even when the load capacity of the ready-mixed concrete is changed, the slump value of the ready-mixed concrete in the mixer drum 20 can be easily grasped by looking at the first composite image 41.

Further, in the ready-mixed concrete state display method, the load capacity scale 49 corresponding to the slump value estimated from the first composite image 41 is superimposed on the second captured image in the mixer drum 20 captured by the camera 31. 2. A second image composition step for generating the composite image 47 and a second display step for displaying the second composite image 47 on the display unit 32 are further included.

In this configuration, the second composite image 47 is obtained by superimposing the load capacity scale 49 according to the slump value estimated from the first composite image 41 on the second captured image captured in the mixer drum 20 of the mixer truck 10. It is displayed on the display unit 32 of the mobile terminal 30. Therefore, the amount of ready-mixed concrete in the mixer drum 20 can be easily grasped by looking at the second composite image 47 displayed on the display unit 32 of the mobile terminal 30.

Further, the portable terminal 30 is provided with a camera 31 capable of capturing an image of the inside of the mixer drum 20 rotatably mounted on the mixer wheel 10 and a display unit 32 capable of displaying an image captured in the mixer drum 20 captured by the camera 31. The ready-mixed concrete state display program that controls the above and displays the state of the ready-mixed concrete in the mixer drum 20 is such that the ready-mixed concrete in the mixer drum 20 is displayed on the mobile terminal 30 with respect to the first captured image 40 in the mixer drum 20 captured by the camera 31. The first image compositing step of superimposing the slump value scales 43 according to the load capacity of the above to generate the first composite image 41 and the first display step of displaying the first composite image 41 on the display unit 32 are executed. ..

In this configuration, the first composite image 41 in which the slump value scale 43 according to the load capacity of the ready-mixed concrete in the mixer drum 20 is superimposed on the first captured image 40 obtained by imaging the inside of the mixer drum 20 of the mixer truck 10 is a mobile terminal. It is displayed on the display unit 32 of 30. Therefore, the slump value of the ready-mixed concrete in the mixer drum 20 can be easily grasped only by looking at the first composite image 41 displayed on the display unit 32 of the mobile terminal 30. As described above, in this configuration, since it is not necessary to newly assemble the sensor and the arithmetic unit to each mixer truck 10, it is possible to grasp the slump value of the ready-mixed concrete in the mixer drum 20 at low cost.

Further, in the ready-mixed concrete state display program, the load capacity scale 49 according to the slump value estimated from the first composite image 41 with respect to the second captured image in the mixer drum 20 captured by the camera 31 on the mobile terminal 30. The second image composition step of generating the second composite image 47 by superimposing the above and the second display step of displaying the second composite image 47 on the display unit 32 are further executed.

In this configuration, the second composite image 47 is obtained by superimposing the load capacity scale 49 according to the slump value estimated from the first composite image 41 on the second captured image captured in the mixer drum 20 of the mixer truck 10. It is displayed on the display unit 32 of the mobile terminal 30. Therefore, the amount of ready-mixed concrete in the mixer drum 20 can be easily grasped by looking at the second composite image 47 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 ... First captured image (captured image), 41 ... First composite image, 42 ... Center point (center of rotation), 43 ... slump value scale, 44 ... first imaging guide (imaging guide), 45 ... second imaging guide (imaging guide), 47 ... second composite image, 50 ... controller, 51 ... image processing unit, 52 ... storage unit, 53 ... estimation unit, 54 ... tilt determination unit, 55 ... guide display unit

Claims (8)

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 state of ready-mixed concrete inside, which is a method of displaying the state of ready-mixed concrete.
A first image composition step of superimposing a slump value scale corresponding to the load capacity of ready-mixed concrete in the mixer drum on the first image captured in the mixer drum captured by the imaging unit to generate a first composite image. When,
The first display step of displaying the first composite image on the display unit, and
A method for displaying the state 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 state 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 first image synthesis step, a corrected image obtained by correcting the first captured image to a horizontal state is generated based on the tilt of the mobile terminal detected by the tilt detecting unit when the first captured image is captured. The ready-mixed concrete state display method according to claim 1 or 2, wherein the slump value scale is superimposed on the corrected image. Any one of claims 1 to 3, wherein the slump value scale is a scale indicating the inclination of the liquid level of the ready-mixed concrete in the mixer drum, which changes according to the slump value of the ready-mixed concrete in the mixer drum. The ready-mixed concrete condition display method described in 1. The mobile terminal further includes an input unit capable of inputting the load capacity of the ready-mixed concrete in the mixer drum.
The first image synthesizing step, according to any one of claims 1 to 4, is characterized in that the slump value scale corresponding to the load capacity input via the input unit is superimposed on the first captured image. The ready-mixed concrete state display method according to any one. A second image for generating a second composite image by superimposing a load capacity scale corresponding to a slump value estimated from the first composite image on the second captured image in the mixer drum captured by the imaging unit. Synthesis steps and
A second display step of displaying the second composite image on the display unit, and
The ready-mixed concrete state display method according to any one of claims 1 to 5, further comprising. 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 status display program that displays the status of ready-mixed concrete in the mixer drum.
To the mobile terminal
A first image composition step of superimposing a slump value scale corresponding to the load capacity of ready-mixed concrete in the mixer drum on the first image captured in the mixer drum captured by the imaging unit to generate a first composite image. When,
A ready-mixed concrete state display program characterized by executing a first display step of displaying the first composite image on the display unit. To the mobile terminal
A second image for generating a second composite image by superimposing a load capacity scale corresponding to a slump value estimated from the first composite image on the second captured image in the mixer drum captured by the imaging unit. Synthesis steps and
The ready-mixed concrete state display program according to claim 7, wherein the second display step of displaying the second composite image on the display unit is further executed.

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