Choke holding device, information processing apparatus, and application of information processing apparatus

Abstract

To facilitate work (processing) requiring information (data) of chalk marking.SOLUTION: The choke holder 1 includes a main body 3, a state quantity detection sensor 4, and a communication device 5. A tip side of the main body 3 is a choke holding portion 3A for holding the choke 2. The state quantity detection sensor 4 is provided in the main body 3, and detects a state quantity (for example, displacement, acceleration, and geomagnetism) related to the movement of the main body 3. The communication device 5 is also provided in the main body 3, and transmits data of the state quantity detected by the state quantity detection sensor 4. The tablet PC21 receives the date transmitted from the choke holder 1. The tablet PC21 calculates the locus of the choke 2 to be the locus of the choke holder 1. Trajectories PC21, 31B, and 31C of the chokes 2 are displayed on the screen 22 of the tablet 31A.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a chalk holding device, an information processing device, and an application of the information processing device for processing data on the trajectory of chalk when marking a wall surface with chalk, for example. [Background technology]

[0002] In general, infrastructure structures such as bridges and tunnels need to be inspected regularly for any deformation (damage) to their surfaces (walls). When an inspection is carried out, a diagram of the structure's deformation (damage) is created as part of the inspection report. When the structure is a concrete tunnel, typical types of deformation include cracks, lifting, peeling, water leakage, exposed rebar, and free lime.

[0003] A deformation diagram of a structure is created, for example, in the following procedure. First, an inspector visits the site where the structure is installed and collects information on deformation of the structure's surface (wall) by visual inspection, hammering, etc. At this time, the inspector marks the deformation areas on the structure's surface (wall) with chalk (hereinafter also referred to as "chalk marking") and records the marked information in a field notebook. The condition of the structure's surface (wall) is also photographed with a camera.

[0004] After collecting information on-site, making chalk markings, recording in field notebooks, and taking photographs, the workers return to the office or other location and, based on the field notebook records and the photographed images, create a deformation development diagram showing the deformation of the structure, such as the deformation development diagram (tunnel deformation development diagram) shown in Figure 6 below.If necessary, they also create materials that match the deformations described in the deformation development diagram with the images taken on-site.

[0005] For example, Patent Document 1 describes a tunnel measurement system that creates a development drawing of a tunnel lining using a three-dimensional laser scanner. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2019-20348 Summary of the Invention [Problem to be solved by the invention]

[0007] However, when creating a deformation development diagram, the following inconveniences can arise. For example, there is a risk that information may not be recorded in the field notebook. It is twice the work of making chalk markings on the surface (wall) of the structure and then copying these into the field notebook. The information recorded in the field notebook must be entered in the deformation development diagram. For example, if the deformation development diagram is a CAD drawing, the information recorded in the field notebook must be entered into the CAD drawing. Since the deformation development diagram is a view from above, the deformation seen from the front during inspection must be inverted and entered into the deformation development diagram. It can also be difficult to determine which deformation a photographed image corresponds to.

[0008] In contrast, the tunnel measurement system of Patent Document 1 can automatically create a tunnel lining development map from data from a 3D laser scanner. However, the tunnel measurement system of Patent Document 1 requires that the location of deformation be input into the lining development map using an input device such as a keyboard, mouse, or pen tablet. For example, as described in paragraphs

[0031] and

[0039] of Patent Document 1, in the case of cracks, it is necessary to make chalk markings along the cracks on-site and then trace the marked locations displayed on the lining development map using an input device.

[0009] One object of the present invention is to provide a chalk holding device, an information processing device, and an application for the information processing device that can facilitate work (processing) that requires information (data) of chalk markings. [Means for solving the problem]

[0010] The present invention preferably provides a choke holding device comprising a main body having a choke holding portion at its tip end that holds the choke, a state quantity detection sensor provided on the main body that detects state quantities related to the movement of the main body, and a transmitting portion provided on the main body that transmits data on the state quantities detected by the state quantity detection sensor.

[0011] In addition, the present invention preferably provides an information processing device comprising: a receiving unit that receives data transmitted from a transmitting unit of a chalk holding device that holds chalk; a chalk trajectory calculation unit that calculates the trajectory of the chalk based on the data received by the receiving unit; a memory unit that stores the trajectory data calculated by the chalk trajectory calculation unit; and a screen on which the trajectory is displayed.

[0012] In addition, the present invention is preferably an application for an information processing device, which has a chalk trajectory calculation process that calculates the trajectory of the chalk based on data received from a chalk holding device that holds the chalk, a storage process that stores data on the trajectory calculated by the chalk trajectory calculation process, and a screen display process that displays the trajectory calculated by the chalk trajectory calculation process on a screen. [Effects of the Invention]

[0013] According to the present invention, it is possible to facilitate work (processing) that requires information (data) of chalk markings. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a perspective view showing an example of a state in which chalk marking is being performed using a chalk holding device (chalk holder) according to an embodiment. FIG. [Figure 2] 2 is an explanatory diagram showing the chalk holding device in FIG. 1 and an information processing device (tablet PC) that receives data transmitted from the chalk holding device. FIG. [Figure 3] FIG. 3 is a block diagram showing a choke holding device in FIG. 2. [Figure 4]8 is an explanatory diagram showing an example of display content (a track recording screen in FIG. 8 described later) displayed on the screen of the information processing device in FIG. 2. FIG. [Figure 5] 3 is an explanatory diagram showing, in addition to the chalk holding device and information processing device in FIG. 2, another information processing device (desktop PC) that receives data output from this information processing device. FIG. [Figure 6] 6 is an explanatory diagram showing an example of the display content (tunnel deformation development diagram) displayed on the screen of another information processing device in FIG. 5.

[0033] FIG. [Figure 7] 4 is a flowchart showing the processing performed by the calculation unit (FIG. 3) of the choke holding device (choke holder). [Figure 8] FIG. 1 is a block diagram showing the transition of display content displayed on the screen of an information processing device (tablet PC). [Figure 9] 9 is a flowchart showing processing performed by the information processing device (tablet PC) when the track recording screen in FIG. 8 is displayed. [Figure 10] FIG. 9 is an explanatory diagram showing a menu screen in FIG. 8. [Figure 11] FIG. 9 is an explanatory diagram showing a work setting screen in FIG. 8. [Figure 12] FIG. 9 is an explanatory diagram showing a past record viewing screen in FIG. 8. [Figure 13] FIG. 9 is an explanatory diagram showing a track record viewing screen in FIG. 8. [Figure 14] 9 is an explanatory diagram showing various setting screens in FIG. 8. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] The chalk holding device, information processing device (chalk trajectory information processing device), and information processing device application (chalk trajectory application) according to the embodiment will be described below with reference to the accompanying drawings. Note that each step in the flow charts shown in Figures 7 and 9 is represented by the letter "S" (for example, step 1 = "S1"). The embodiment will be described using an example in which the chalk holding device (chalk holder 1) is used for chalk marking in tunnel inspection work.

[0016] As shown in Figure 1, worker H conducting a tunnel inspection holds chalk holder 1, which serves as a chalk holding device. Chalk holder 1 holds chalk 2. Worker H uses chalk holder 1 to make chalk marks with chalk 2 at deformed areas on the surface (inner surface) of tunnel T, a structure. For example, worker H, holding chalk holder 1 in his hand, makes marks (chalks) along crack 102 in wall surface 101 of tunnel T with chalk 2 of chalk holder 1.

[0017] At this time, the chalk holder 1 detects state quantities related to its own movement (trajectory) using a built-in sensor (state quantity detection sensor 4). At the same time, as shown in Figure 2, the chalk holder 1 transmits data on the detected state quantities to a tablet PC 21 carried by the worker H, for example, in real time while making the chalk marking. The chalk holder 1 transmits, for example, two-dimensional displacement data, three-dimensional acceleration data, and geomagnetic data of the chalk holder 1 as data on state quantities related to the movement (trajectory) of the chalk holder 1. Data communication between the chalk holder 1 and the tablet PC 21 is carried out, for example, by wireless communication (short-range wireless communication) such as Bluetooth (registered trademark).

[0018] The tablet PC 21 is an information processing device (computer), more specifically, a portable information processing terminal (portable computer). The tablet PC 21 receives data transmitted from the chalk holder 1, i.e., data on the state quantities (displacement, acceleration, geomagnetism) of the chalk holder 1. The tablet PC 21 calculates the trajectory (route) of the chalk holder 1, i.e., the trajectory (route) of the chalk 2, based on the received data on the state quantities (displacement, acceleration, geomagnetism) of the chalk holder 1. The tablet PC 21 stores the "data on the state quantities of the chalk holder 1 received from the chalk holder 1" and / or the "data on the trajectory of the chalk 2 calculated by the tablet PC 21" in the memory of the tablet PC 21 (not shown) and / or in the cloud (data server) via the tablet PC 21. The memory corresponds to various storage devices for storing data, such as RAM, ROM (EEPROM, flash ROM), SSD, HDD, etc.

[0019] 2, the tablet PC 21 displays trajectories 31A, 31B, and 31C of the chalk 2 on the screen 22 of the tablet PC 21. FIG. 4 and FIGS. 10 to 14, which will be described later, show the screen 22 of the tablet PC 21, i.e., the operation screen (user interface) displayed on this screen 22. Of these, FIG. 4 shows a screen (trajectory recording screen 25) displayed on the tablet PC 21 when making chalk markings using the chalk holder 1. FIG. 2 also shows an enlarged version of the front view 25B in FIG. 4 displayed on the screen 22 of the tablet PC 21.

[0020] As shown in FIG. 5, the tablet PC 21 is capable of data communication with a desktop PC 41, which is a separate information processing device. Data communication between the tablet PC 21 and the desktop PC 41 may be wireless or wired. Data may also be exchanged using an external storage device such as a USB memory or various communication lines, including the Internet. FIG. 5 shows a case where data communication is performed wired between the tablet PC 21 and the desktop PC 41 using a data cable 51. The desktop PC 41 stores data received from the tablet PC 21, such as "data on the state quantities of the chalk holder 1 received by the tablet PC 21" and / or "data on the trajectories 31A, 31B, and 31C of the chalk 2 calculated by the tablet PC 21," in the memory (not shown) of the desktop PC 41 and / or in the cloud (a data server) via the desktop PC 41.

[0021] As shown in Figures 5 and 6, the desktop PC 41 displays trajectories 31A, 31B, and 31C of the chalk 2 on a screen 42 of the desktop PC 41. Note that Figure 6 corresponds to the screen 42 of the desktop PC 41 in Figure 5. That is, Figures 5 and 6 show a state in which a tunnel deformation development diagram (CAD drawing) is displayed on the screen 42 of the desktop PC 41. Also, the screen 22 of the tablet PC 21 in Figure 5 shows a state in which the screen displayed when data is output from the tablet PC 21 to the desktop PC 41, i.e., the past record viewing screen 26 shown in Figure 12 (described later), is displayed.

[0022] As shown in Figures 2 and 3, chalk holder 1 includes main body 3, state quantity detection sensor 4, and communication device 5 as a transmitter. Chalk holder 1 also includes calculation unit 6, battery 7, voltage converter 8, power switch 9, drawing switch 10, LED 11, and color change switch 12. The tip of main body 3 forms chalk holding portion 3A that holds chalk 2. Chalk holding portion 3A is formed as a recess into which chalk 2 fits at the tip of main body 3 of chalk holder 1. Chalk holding portion 3A is configured to hold chalk 2 with the tip of chalk 2 protruding a desired length. The base end of main body 3 forms grip portion 3B for holding chalk holder 1 in the hand.

[0023] The state quantity detection sensor 4 is provided in the main body 3. That is, the state quantity detection sensor 4 is provided inside the casing 3C that constitutes the main body 3. The state quantity detection sensor 4 detects a state quantity related to the movement of the main body 3. The state quantity related to the movement (trajectory, path) of the main body 3 corresponds to the state quantity related to the movement (trajectory, path) of the choke 2 that is held integrally with the main body 3. That is, the state quantity related to the movement of the main body 3 is equivalent to the state quantity related to the movement of the choke 2. For this reason, the state quantity related to the movement of the main body 3 may be detected as the movement of the main body 3 itself, or may be detected as the movement of the choke 2 itself. Furthermore, movement that can be converted into movement of the main body 3 or the choke 2 may be detected. The state quantity detection sensor 4 is connected to a calculation unit 6. Data (signals) corresponding to the state quantities detected by the state quantity detection sensor 4 are input to the calculation unit 6.

[0024] As shown in FIG. 3, the state quantity detection sensor 4 is composed of three sensors, for example, an optical displacement sensor 4A as a first sensor, an acceleration sensor 4B as a second sensor, and a geomagnetic sensor 4C as a third sensor. The optical displacement sensor 4A, the acceleration sensor 4B, and the geomagnetic sensor 4C are connected to the calculation unit 6. The optical displacement sensor 4A detects two-dimensional displacement of the main body 3 as a state quantity related to the movement of the main body 3. The optical displacement sensor 4A is also called an optical tracking sensor, and is composed of, for example, an LED or laser and an image sensor. The optical displacement sensor 4A is a displacement sensor that can detect the amount of movement without contact.

[0025] The optical displacement sensor 4A is positioned to face the wall surface 101 of the tunnel T when the chalk holder 1 is used to make chalk markings on the wall surface 101. The optical displacement sensor 4A continuously captures images of the wall surface 101 using an image sensor, and outputs data (Δx, Δy) corresponding to the two-dimensional (X direction, Y direction) displacement (amount of movement) of the chalk holder 1 (chalk 2, main body 3) obtained from changes in the images to the calculation unit 6.

[0026] Acceleration sensor 4B detects the three-dimensional acceleration of main body 3 as a state quantity related to the movement of main body 3. Acceleration sensor 4B can be, for example, a six-axis sensor (six-axis inertial sensor). The six-axis sensor detects, for example, the acceleration of choke holder 1 (choke 2, main body 3) along three axes (X-axis, Y-axis, Z-axis) and the angular velocities around the three axes, totaling six axes of inertial force. Acceleration sensor 4B is built into main body 3. Acceleration sensor 4B outputs, for example, data (ax, ay, az) corresponding to the three-dimensional (X-direction, Y-direction, Z-direction) acceleration of choke holder 1 (choke 2, main body 3) and data corresponding to each angular velocity to calculation unit 6.

[0027] The geomagnetic sensor 4C detects geomagnetism as a state quantity related to the movement of the main body 3. The geomagnetic sensor 4C detects, for example, the magnetic force (geomagnetism) of the choke holder 1 (choke 2, main body 3) in three axes (X-axis, Y-axis, Z-axis). The geomagnetic sensor 4C is built into the main body 3. The geomagnetic sensor 4C outputs, for example, data (Bx, By, Bz) corresponding to the magnetic force (geomagnetism) of the choke holder 1 (choke 2, main body 3) in three dimensions (X-axis, Y-axis, Z-axis) to the calculation unit 6. The acceleration sensor 4B and the geomagnetic sensor 4C correspond to sensors for detecting the orientation of the choke 2, i.e., the orientation of the choke holder 1 (main body 3).

[0028] A calculation unit 6 is also provided in the choke holder 1 (main body 3). The calculation unit 6 is a microcomputer having a CPU (central processing unit) and a memory (storage device). The calculation unit 6 is connected to the state quantity detection sensors 4 (optical displacement sensor 4A, acceleration sensor 4B, geomagnetic sensor 4C) and the communication device 5. The calculation unit 6 is also connected to a battery 7 via a voltage converter 8 and a power switch 9. The calculation unit 6 is also connected to a drawing switch 10, an LED 11, and a color change switch 12. The memory of the calculation unit 6 stores (stores) a processing program for executing, for example, the processing flow shown in FIG. 7, which will be described later.

[0029] For example, based on the operation of the drawing switch 10, more specifically, when the drawing switch 10 is pressed, the calculation unit 6 transmits data on the state quantities (displacement, acceleration, geomagnetism) of the chalk holder 1 detected by the state quantity detection sensors 4 (optical displacement sensor 4A, acceleration sensor 4B, geomagnetic sensor 4C) to the tablet PC 21 via the communication device 5. The calculation unit 6 also controls the light emission of the LED 11. The calculation unit 6 also changes the color of the light (emission color) emitted from the LED 11 based on the operation of the color change switch 12.

[0030] A communication device 5 acting as a transmitter is also provided in the choke holder 1 (main body 3). The communication device 5 is a transceiver that performs short-range wireless communication, such as Bluetooth (registered trademark). The communication device 5 is controlled by a calculation unit 6. The communication device 5 transmits data on the state quantities (displacement, acceleration, geomagnetism) of the choke holder 1 detected by the state quantity detection sensors 4 (optical displacement sensor 4A, acceleration sensor 4B, geomagnetic sensor 4C).

[0031] The choke holder 1 has a built-in battery 7 that serves as a power source. The battery 7 may be, for example, a lithium-ion battery, an alkaline battery, or the like. The battery 7 supplies power to the calculation unit 6 via a voltage converter 8. The voltage converter 8 is a DC-DC converter that converts the voltage of the battery 7 into the operating voltage of the calculation unit 6. A power switch 9 is provided between the battery 7 and the calculation unit 6, more specifically, between the battery 7 and the voltage converter 8. The power switch 9 is turned on and off by the operator H. When the power switch 9 is turned on, power is supplied from the battery 7 to the calculation unit 6. When the power switch 9 is turned off, the supply of power from the battery 7 to the calculation unit 6 is cut off.

[0032] The drawing switch 10 is provided on the grip portion 3B of the chalk holder 1 (main body 3). The drawing switch 10 is connected to the calculation unit 6. The drawing switch 10 is operated by the worker H. For example, the worker H presses the drawing switch 10 when sending the content of the chalk marking made by the chalk holder 1 to the tablet PC 21, that is, when sending data on the state quantities (displacement, acceleration, geomagnetism) of the chalk holder 1 from the chalk holder 1 to the tablet PC 21. In other words, when the worker H wants to send the trajectory of the chalk 2 to the tablet PC 21, the worker H makes the chalk marking while pressing the drawing switch 10 with his thumb. While the drawing switch 10 is pressed, the calculation unit 6 sends data on the state quantities of the chalk holder 1 detected by the state quantity detection sensors 4 (optical displacement sensor 4A, acceleration sensor 4B, geomagnetic sensor 4C) to the tablet PC 21.

[0033] The LED 11 corresponds to an alarm unit that notifies the worker H of the state of the chalk holder 1. The LED 11 is connected to the calculation unit 6. For example, when the power switch 9 is turned on, the calculation unit 6 causes the LED 11 to blink. Furthermore, when communication (pairing) with the tablet PC 21 is established, the calculation unit 6 turns on the LED 11. When the drawing switch 10 is pressed, the calculation unit 6 causes the LED 11 to blink multiple times and then causes it to blink in a gradation pattern. When the pressing of the drawing switch 10 is finished, the calculation unit 6 causes the LED 11 to blink multiple times and then turns on.

[0034] The color change switch 12 is provided adjacent to the drawing switch 10 on the grip portion 3B of the chalk holder 1 (main body 3). The color change switch 12 is connected to the calculation unit 6. The color change switch 12 is operated by the worker H. For example, the worker H operates the color change switch 12 when changing the color (emission color) of the light emitted from the LED 11.

[0035] The tablet PC 21 is wirelessly connected to the chalk holder 1. Data on the state quantities of the chalk holder 1 (displacement, acceleration, geomagnetism) is transmitted from the chalk holder 1 to the tablet PC 21. The tablet PC 21 is a computer equipped with a central processing unit (CPU). Specifically, the tablet PC 21 as an information processing device is equipped with a communication device (not shown) as a receiving unit, a central processing unit (not shown) corresponding to the chalk trajectory calculation unit, a memory (not shown) as a storage unit, a screen 22, and a battery (not shown) as a power source. The tablet PC 21 also has a rear camera (not shown) as a camera, and a connector (not shown) as an output unit.

[0036] The communication device of the tablet PC 21 is also a transceiver that performs short-range wireless communication such as Bluetooth (registered trademark). The communication device of the tablet PC 21 receives data transmitted from the communication device 5 of the chalk holder 1 that holds the chalk 2. That is, the tablet PC 21 receives data on the state quantities (displacement, acceleration, geomagnetism) of the chalk holder 1. The arithmetic processing device of the tablet PC 21 calculates the trajectory of the chalk holder 1, i.e., the trajectory of the chalk 2, based on the data from the chalk holder 1 received by the communication device of the tablet PC 21. That is, the tablet PC 21 calculates the trajectory of the chalk 2 from the data on the state quantities (displacement, acceleration, geomagnetism) of the chalk holder 1. In this case, the tablet PC 21 calculates the trajectory of the chalk 2 as data that can be used in CAD, or converts it into data that can be used in CAD.

[0037] The memory of the tablet PC 21 stores (saves) data on the trajectory of the chalk 2 calculated by the arithmetic processing unit of the tablet PC 21. In addition to the data on the trajectory of the chalk 2, the memory of the tablet PC 21 may also store data transmitted from the communication device 5 of the chalk holder 1, i.e., data on the state quantities (displacement, acceleration, geomagnetism) of the chalk holder 1. The memory of the tablet PC 21 also stores (contains), for example, a processing program for executing the processing flow shown in Fig. 9, which will be described later.

[0038] The screen 22 of the tablet PC 21 is a touch-type display (monitor) configured, for example, by a liquid crystal panel, an organic EL panel, or the like. The trajectories 31A, 31B, and 31C of the chalk 2 are displayed on the screen 22 of the tablet PC 21. At this time, an application (software) for handling data transmitted from the chalk holder 1 is running on the tablet PC 21. This application is a deformation recording application (tunnel deformation recording application, tunnel inspection recording application) that records deformations in the tunnel when a tunnel inspection is performed.

[0039] FIG. 8 shows the transition of the display contents (user interface) displayed on the screen 22 when a deformation recording application (hereinafter also referred to as the "tunnel deformation recording application" or the "tunnel inspection recording application") is run on the tablet PC 21. As shown in FIG. 8, when the tunnel inspection application is launched, the screen 22 of the tablet PC 21 becomes a menu screen 23. FIG. 10 shows the menu screen 23. The tunnel inspection recording application (inspection recording application) is terminated, for example, by pressing the home button 21A of the tablet PC 21. As shown in FIG. 8, the tunnel inspection recording application can be switched to the menu screen 23, the work setting screen 24, the track recording screen 25, the past record viewing screen 26, the track record viewing screen 27, and various setting screens 28 in response to an operation by the worker H.

[0040] As shown in FIG. 10, menu screen 23 displays new settings button 23A, past record viewing button 23B, and various settings button 23C. When new settings button 23A in FIG. 10 is touched, work settings screen 24 in FIG. 11 is displayed. When past record viewing button 23B in FIG. 10 is touched, past record viewing screen 26 in FIG. 12 is displayed. When various settings button 23C in FIG. 10 is touched, various settings screen 28 in FIG. 14 is displayed. On various settings screen 28 in FIG. 14, it is possible to set the communication connection with chalk holder 1, set the data storage location, etc.

[0041] On the work setting screen 24 of FIG. 11, the date of the inspection, the weather, temperature, humidity, work location, and worker name at the time of the inspection can be entered as "work information." In addition, the span width and number of spans of the tunnel T to be inspected can be entered in the "work setting" field. The span width of the tunnel T corresponds to the length from one joint 104 to the next joint (not shown) of multiple lining concrete pieces 103, 103 lined up in series along the length of the tunnel T. In addition, the number of spans corresponds to the number of multiple lining concrete pieces 103, 103 lined up in series from the entrance to the exit of the tunnel T.

[0042] For example, for tunnel T in the tunnel deformation development diagram of FIG. 6 described later, 7 is entered as the number of spans. The span width is the width of the lining concrete 103 of tunnel T (the length from joint 104 to the next joint). These entries are reflected in the display content of the trajectory recording screen 25 of FIG. 4 (e.g., the number of S001 to S007 in the span list 25A). A color corresponding to the deformation can be entered in the "Drawing Color Setting" field of FIG. 11. This entry is also reflected in the display content of the trajectory recording screen 25 of FIG. 4 (e.g., the color of the deformation displayed in the front view 25B). The work setting screen 24 of FIG. 11 displays a work start button 24A and a main menu button 24B. Touching the work start button 24A in FIG. 11 displays the trajectory recording screen 25 of FIG. 4. Touching the main menu button 24B in FIG. 11 displays the menu screen 23 of FIG. 10.

[0043] The trajectory recording screen 25 in FIG. 4 is a screen displayed when recording chalk markings of the chalk holder 1. The trajectory recording screen 25 in FIG. 4 displays a span list 25A of the tunnel T, a front view 25B of the wall selected in the span list 25A, a list 25C of icons of equipment to be entered into the front view 25B, a deformation information input field 25D for entering information on the deformation recorded in the front view 25B, and thumbnails of images 25E of the deformation captured by a camera. The front view 25B displays, as an example, the trajectories 31A, 31B, and 31C of the chalk 2 corresponding to the crack 102 and the trajectory 32 of the chalk 2 corresponding to the lift. The inside of the lift trajectory 32 can be hatched to clarify the extent of the lift.

[0044] The front view 25B can be switched to an inverted development view by touching the "Front View" column in the upper right corner, for example. The span list 25A displays a list of development views for each span. In the defect information input column 25D, for example, the phenomenon column 25D1 is a pull-down menu, allowing a list of types of defect (deformation). Additional items can be added to this list. The size column 25D2 displays the total length, for example, if there is a crack. This total length is calculated along with the trajectories 31A, 31B, and 31C. For example, if the defect (deformation) is a cavity or a lift, the "length x width" dimensions are displayed. The memo column 25D3 allows free handwriting input using a stylus (stylus pen, touch pen, tablet pen). In this case, the handwritten input characters may be converted into text data.

[0045] 4 also displays a start point registration button 25F, a trajectory deletion button 25G, a save button 25H, a recording stop button 25J, a microphone button 25K, and a camera button 25L. The start point registration button 25F is touched when registering in the front view 25B a start point (starting point) from which to start marking the wall surface 101 with the chalk 2. That is, touching the start point registration button 25F makes it possible to input (specify) a start point in the front view 25B. In this state, the position in the front view 25B from which the marking with the chalk 2 will start is input (specified) in the front view 25B. For example, if a chalk marking is to be made along a crack 102 in the wall surface 101, the position corresponding to the start point of the crack 102 from which the chalk marking will start is input (specified) in the front view 25B.

[0046] This input (identification) can be performed, for example, with a stylus (stylus pen, touch pen, tablet pen). This registers the start point of the chalk marking in this front view 25B. That is, it registers the position in the front view 25B where the marking with the chalk 2 begins. Then, with the start point of the chalk marking registered in this front view 25B, the chalk marking is made along the crack 102 while the drawing switch 10 of the chalk holder 1 (main body 3) is pressed. This displays the trajectory of the chalk 2 (e.g., trajectory 31A) from the start to the end of pressing the drawing switch 10 on the front view 25B. At this time, the tablet PC 21 calculates the trajectory of the chalk holder 1, i.e., the trajectory of the chalk 2 (e.g., trajectory 31A), based on the data transmitted from the chalk holder 1 (data on the displacement, acceleration, and geomagnetic field of the chalk holder 1), and displays this calculated trajectory (e.g., trajectory 31A) on the front view 25B.

[0047] The Delete Trace button 25G is touched when deleting traces 31A, 31B, and 31C displayed in the front view 25B. For example, by selecting a trace (e.g., trace 31A) to be deleted in the front view 25B and touching the Delete Trace button 25G while the trace (e.g., trace 31A) is selected, the trace (e.g., trace 31A) can be deleted from the front view. Touching the microphone button 25K activates the audio recorder, enabling audio recording. Touching the camera button 25L activates the camera, allowing the rear camera of the tablet PC 21 to capture an image of a deformation of the wall surface 101 (e.g., crack 102).

[0048] The captured image 25E is displayed and recorded in association with the deformation in the front view 25B. The deformation information input field 25D displays information about the selected trajectory (e.g., trajectory 31A). When recording information in the deformation information input field 25D, for example, the trajectory for which information is to be recorded (e.g., trajectory 31A) is selected, and in this state, the necessary information is entered in the memo field 25D3 or the like. The save button 25H is touched to save (store) the recorded content up to the current point. When the save button 25H is touched, the recorded content up to the current point is saved in the memory of the tablet PC and / or in the cloud via the tablet PC. When the end recording button 25J is touched, the recorded content is saved in the same way as when the save button 25H is touched, and the screen switches to the past record viewing screen 26 of FIG. 12. In this case, the current record is registered (e.g., newly registered or overwritten) in the list 26A of the past record viewing screen of FIG. 12.

[0049] The past record viewing screen 26 in FIG. 12 displays a list 26A of inspection information saved (stored) in the tablet PC 21. The past record viewing screen 26 in FIG. 12 also displays a work information display button 26B, a record view button 26C, an add record button 26D, a record deletion button 26E, a data output button 26F, and a main menu button 26G. For example, if a user selects a record (work location) from the list 26A and touches the work information display button 26B in this state, detailed work information for the record (e.g., the work date, weather at the time of inspection, temperature, humidity, work location, worker name, etc.) is displayed (pop-up display). To delete a record from the list 26A, the user selects the record from the list 26A and touches the record deletion button 26E in this state. Touching the main menu button 26G displays the menu screen 23 in FIG. 10.

[0050] 12, selecting any record (work location) from list 26A on past record viewing screen 26 and touching view record button 26C in this state switches to track record viewing screen 27 of FIG. 13. Track record viewing screen 27 of FIG. 13 displays the inspection information selected from list 26A on past record viewing screen 26 of FIG. 12. The content displayed on track record viewing screen 27 of FIG. 13 is the same as the content displayed on track record screen 25 of FIG. 4, for example. In this case, the track record viewing screen 27 of FIG. 13 does not display buttons to be operated when recording an inspection using track record screen 25 of FIG. 4. The track record viewing screen 27 of FIG. 13 displays resume work button 27A and return to list button 27B. Touching resume work button 27A switches to track record screen 25 of FIG. 4. This allows the user to resume the interrupted work of recording inspection information. On the other hand, when the return to list button 27B is touched, the screen returns to the past record viewing screen 26 of FIG.

[0051] Here, when tunnel T is inspected periodically, the tunnel inspection recording app can add the current inspection information to the records of past inspection information. In this case, the user selects the record (work location) of a past inspection from the list 26A on the past record viewing screen 26 of FIG. 12 and touches the Add Record button 26D. In this case, the screen switches from the past record viewing screen 26 of FIG. 12 to the work setting screen 24 of FIG. 11. On the work setting screen 24 of FIG. 11, the user sets the work for the current inspection. That is, the user inputs the work information for the current inspection. This records the current work information in addition to the past work information. Then, by touching the work start button 24A on the work setting screen 24 of FIG. 11, the screen switches to the track recording screen 25 of FIG. 4. In this case, the track recording screen 25 displays the records of past inspections. Therefore, by starting to record the current inspection from a state in which the records of past inspections are displayed, the user can add the record of the current inspection to the records of past inspections.

[0052] 5, the tunnel inspection record app can output data (inspection record data) saved (stored) in the tablet PC 21 to a desktop PC 41, which is another information processing device. In this case, the tablet PC 21 is set to a state in which data communication with the desktop PC 41 is possible. For example, a data cable 51 connecting the tablet PC 21 to the desktop PC 41 is inserted into a connector (not shown) of the tablet PC 21. In this state, the tunnel inspection record app displays the past record viewing screen 26 of FIG. 12. Then, the user selects the record (work location) to be output from the list 26A on the past record viewing screen 26 and touches the data output button 26F.

[0053] As a result, the data (inspection record data) of the selected record (work location) is output from the tablet PC 21 to the desktop PC 41. The desktop PC 41 saves (stores) the record (work location) data (inspection record data) output from the tablet PC 21 in its own memory and / or in the cloud via the desktop PC 41. The desktop PC 41 reads the saved record (work location) data (inspection record data) when creating a tunnel deformation development diagram (CAD drawing) shown in FIG. 6 using CAD software, for example. As a result, the tunnel deformation development diagram (CAD drawing) can be created using the record (work location) data (inspection record data) saved in the tablet PC 21.

[0054] As described above, the tablet PC 21 includes a connector (not shown) as an output unit that outputs data (inspection record data) from the tablet PC 21 to the desktop PC 41, which is another information processing device. The data (inspection record data) includes data on the trajectory of the chalk 2 calculated by the arithmetic processing device (chalk trajectory calculation unit) of the tablet PC 21. The output unit that outputs data is not limited to a connector, and may be a communication device that performs data communication (for example, wireless LAN communication) between the tablet PC 21 and the desktop PC 41. Data may be exchanged between the tablet PC 21 and the desktop PC 41 using an external storage device such as a USB memory or various communication lines including an Internet line.

[0055] The tablet PC 21 also includes a camera (rear camera). Data on an image captured by the camera and data on the trajectory of the chalk 2 are stored in association with each other in the memory (storage unit) of the tablet PC 21. As shown in FIG. 4, an image 25E captured by the camera and trajectories 31A, 31B, and 31C of the chalk 2 are displayed in association with each other on the screen 22 of the tablet PC 21. The tunnel inspection recording app of the tablet PC 21 includes a chalk trajectory calculation process, a storage process, and a screen display process. These processes are performed, for example, on the trajectory recording screen 25 of FIG. 4. The chalk trajectory calculation process is a process of calculating the trajectory of the chalk 2 based on data received from the chalk holder 1 holding the chalk 2 (data on the displacement, acceleration, and geomagnetic field of the chalk holder 1). The storage process is a process of storing (saving) the data on the trajectory of the chalk 2 calculated in the chalk trajectory calculation process in the memory of the tablet PC 21 and / or in the cloud via the tablet PC 21. The screen display process is a process of displaying the trajectory of the chalk 2 calculated in the chalk trajectory calculation process on the screen 22, for example, a process of displaying trajectories 31A, 31B, and 31C on the front view 25B of the trajectory recording screen 25 in FIG.

[0056] As described above, according to the embodiment, the chalk holder 1 traces the trajectory of the chalk 2 during chalk marking and wirelessly transmits the data to the tablet PC 21 running dedicated software (tunnel inspection recording app). The tablet PC 21 calculates the trajectory of the chalk 2 from the data transmitted from the chalk holder 1 and displays the calculated trajectory of the chalk 2 on the screen 22. That is, trajectories 31A, 31B, and 31C can be displayed on the front view 25B of the trajectory recording screen 25 in FIG. 4. This allows the user to check the tracing status of the trajectory of the chalk 2 in a timely manner. The tablet PC 21 can also calculate or convert data of the trajectory of the chalk 2 (chalk trajectory tracing data) into data usable in CAD and store the data. The tablet PC 21 also has a function for linking the data of the trajectory of the chalk 2 (chalk trajectory tracing data) with data of a photograph (e.g., image 25E) taken by the tablet PC 21.

[0057] Next, the flow chart shown in Figure 7 will be described. Figure 7 is a flow chart showing the control processing performed by the calculation unit 6 of the choke holder 1. The processing in Figure 7 is repeatedly executed at a predetermined control period. Note that "SW" in Figure 7 is an abbreviation for "switch" (the same applies to Figure 9 described below).

[0058] The control process shown in Figure 7 is started when the power switch 9 of the chalk holder 1 is turned ON. When the power switch 9 is turned ON, the calculation unit 6 of the chalk holder 1 blinks the LED 11 in S1. The light color of the LED 11 can be, for example, a color set by the LED color change described below. In other words, the light color of the LED 11 is arbitrary. Note that the light color of the LED 11 may also be set to a predetermined color in advance. In other words, the light color of the LED 11 does not have to be changeable.

[0059] The calculation unit 6 of the chalk holder 1 blinks the LED 11 in S1, and then establishes communication (pairing) with the tablet PC 21 in S2. That is, the calculation unit 6 enables communication between the chalk holder 1 and the tablet PC 21. Once communication with the tablet PC 21 is enabled in S2, the calculation unit 6 turns on the LED 11 in S3 and proceeds to S4 and S5. That is, once the LED 11 is turned on in S3, the chalk holder 1 enters a standby state in S4, and the process proceeds to S5 and subsequent steps. In S5, it is determined whether the color change switch 12 has been pressed. If the result in S5 is "NO," i.e., if it is determined that the color change switch 12 has not been pressed, the process proceeds to S6. If the result in S5 is "YES," i.e., if it is determined that the color change switch 12 has been pressed, the process proceeds to S12.

[0060] In S6, it is determined whether pressing of the drawing switch 10 has begun. That is, when recording a chalk marking, the worker H holding the chalk holder 1 makes the chalk marking while pressing the drawing switch 10 of the chalk holder 1. Therefore, in S6, it is determined whether pressing of the drawing switch 10 has begun, thereby determining whether the worker H has started making the chalk marking. If S6 returns "NO," that is, if it is determined that pressing of the drawing switch 10 has not begun, the process returns to S5 and repeats the processing from S5 onwards. On the other hand, if S6 returns "YES," that is, if it is determined that pressing of the drawing switch 10 has begun, the process proceeds to S7. In S7, the LED 11 flashes three times, and then the LED 11 flashes in a gradation pattern. Note that the number of flashes does not have to be three, and the flashing does not have to be a gradation pattern. That is, it is sufficient if the light emitted by the LED 11 can notify that recording of the chalk marking has begun and that recording is currently being performed.

[0061] In S8, which follows S7, data is sent from the chalk holder 1 to the tablet PC 21. That is, the calculation unit 6 of the chalk holder 1 sends data on the state quantities detected by the state quantity detection sensors 4 (4A, 4B, 4C), i.e., data on the state quantities related to the movement of the chalk holder 1 (chalk 2, main body 3), to the tablet PC 21 via the communication device 5 of the chalk holder 1. In this case, the state quantity data are "data (Δx, Δy) corresponding to the two-dimensional (X-direction, Y-direction) displacement (amount of movement) of the chalk holder 1 (chalk 2, main body 3) detected by the optical displacement sensor 4A," "data (ax, ay, az) corresponding to the three-dimensional (X-direction, Y-direction, Z-direction) acceleration of the chalk holder 1 (chalk 2, main body 3) detected by the acceleration sensor 4B," and "data (Bx, By, Bz) corresponding to the three-dimensional (X-direction, Y-direction, Z-direction) magnetic force (geomagnetism) of the chalk holder 1 (chalk 2, main body 3) detected by the geomagnetic sensor 4C."

[0062] In S8, the choke holder 1 (calculation unit 6) transmits the state quantity data detected by the state quantity detection sensors 4 (4A, 4B, 4C) at that time, i.e., the displacement data (Δx, Δy), acceleration data (ax, ay, az), and magnetic force (geomagnetic) data (Bx, By, Bz), and then proceeds to S9. In S9, it is determined whether the pressing of the drawing switch 10 has ended. If the result in S9 is "NO," that is, if the pressing of the drawing switch 10 has not ended (the pressing is continuing), the process returns to before S8 and repeats the processes of S8 and S9. As a result, the choke holder 1 (calculation unit 6) continues to transmit the state quantity data detected at each predetermined control period to the tablet PC 21 while the drawing switch 10 is pressed.

[0063] On the other hand, if S9 returns "YES," i.e., if it is determined that pressing of the drawing switch 10 has finished, the process proceeds to S10, where data transmission to the tablet PC 21 is terminated. In the following S11, the LED 11 is flashed twice, and then the LED 11 is turned on, and the process returns to before S5, and the process from S5 onwards is repeated. In other words, the chalk holder 1 returns to the standby state. Note that the number of flashes in S11 does not have to be two. In other words, it is sufficient if the light emitted by the LED 11 is enough to notify that recording of the chalk marking has finished.

[0064] If the determination in S5 is "YES," the color of light emitted by the LED 11 is changed. That is, in S12, the LED 11 is lit in a color different from the color that is currently lit. After the color of the LED 11 is changed in S12, the process returns to before S5 and repeats the processing from S5 onwards. As a result, the color of the LED 11 changes every time the color change switch 12 is pressed, so the worker H can change (set) the LED color to a desired color by repeatedly pressing the color change switch 12.

[0065] Next, a description will be given of the flow chart shown in Fig. 9. Fig. 9 is a flow chart showing control processing performed by the arithmetic processing unit of the tablet PC 21. The processing in Fig. 9 is also repeatedly executed at a predetermined control cycle.

[0066] The control process shown in FIG. 9 is a process performed when the screen 22 of the tablet PC 21 is the trajectory recording screen 25 of FIG. 4. In S21, the arithmetic processing unit of the tablet PC 21 determines whether the screen 22 of the tablet PC 21 is the trajectory recording screen 25. If the result of S21 is "NO," i.e., if it is determined that the screen 22 of the tablet PC 21 is not the trajectory recording screen 25, the process returns to start (returns to before S21 and repeats the process of S21). On the other hand, if the result of S21 is "YES," i.e., if it is determined that the screen 22 of the tablet PC 21 is the trajectory recording screen 25, the process proceeds to S22. In S22, it is determined whether a start point (starting point) of the chalk marking has been designated (specified) on the front view 25B of the trajectory recording screen 25. This designation (specification) of the start point (starting point) is performed by touching the start point registration button 25F and inputting (specifying) the position in the front view 25B that will be the start point (starting point) from which marking with the chalk 2 will begin. In S22, it is determined whether or not this designation (identification) has been made.

[0067] If S22 returns "NO," i.e., if it is determined that the start point (starting point) of the chalk marking has not been specified (identified) in the front view 25B, the process proceeds to S30. On the other hand, if S22 returns "YES," i.e., if it is determined that the start point (starting point) of the chalk marking has been specified (identified) in the front view 25B, the process proceeds to S23. This corresponds to the case where worker H will now press the drawing switch 10 from a position on the wall surface 101 that corresponds to the start point (starting point) in the front view 25B to start chalk marking with the chalk holder 1. Therefore, in S23, it is determined whether pressing of the drawing switch 10 of the chalk holder 1 has begun. This determination can be made, for example, by configuring the chalk holder 1 to transmit a signal indicating that the drawing switch 10 of the chalk holder 1 has been pressed to the tablet PC 21.

[0068] If S23 returns "NO," i.e., it is determined that pressing of the drawing switch 10 of the choke holder 1 has not begun, the process of S23 is repeated. On the other hand, if S23 returns "YES," i.e., it is determined that pressing of the drawing switch 10 of the choke holder 1 has begun, the process proceeds to S24. In S24, data reception begins. That is, in S24, reception of state quantity data transmitted from the choke holder 1, i.e., displacement data (Δx, Δy), acceleration data (ax, ay, az), and magnetic force (geomagnetic) data (Bx, By, Bz) of the choke holder 1 (choke 2, main body 3), begins. In the following S25, these data, i.e., displacement data (Δx, Δy), acceleration data (ax, ay, az), and magnetic force (geomagnetic) data (Bx, By, Bz), are imported into the memory (e.g., RAM) of the tablet PC 21. In the following S26, it is determined whether pressing of the drawing switch 10 of the choke holder 1 has ended. If S26 returns "NO," i.e., if it is determined that the pressing of the drawing switch 10 of the choke holder 1 has not ended, the process returns to before S25 and repeats the processes of S25 and S26. As a result, the data transmitted from the choke holder 1 continues to be captured while the drawing switch 10 of the choke holder 1 is being pressed.

[0069] On the other hand, if S26 returns "YES," i.e., if it is determined that pressing of the drawing switch 10 of the chalk holder 1 has ended, the process proceeds to S27, where data reception from the chalk holder 1 is terminated. In the following S28, the trajectory of the chalk 2 is displayed on the screen 22 of the tablet PC 21 based on the received data, i.e., the displacement data (Δx, Δy), acceleration data (ax, ay, az), and magnetic force (geomagnetic) data (Bx, By, Bz) of the chalk holder 1 (chalk 2, main body 3). Specifically, the trajectory of the chalk 2 is calculated based on the displacement data (Δx, Δy), acceleration data (ax, ay, az), and magnetic force (geomagnetic) data (Bx, By, Bz). At this time, the three-dimensional trajectory of the chalk 2 obtained from the three data (displacement, acceleration, and geomagnetic) is converted into a two-dimensional trajectory (correction calculation). Note that this conversion into a trajectory (correction calculation) may be performed, for example, by the calculation unit 6 of the chalk holder 1. This point will be described later. Then, trajectories 31A, 31B, and 31C are displayed on a front view 25B of the chalk 2 on the trajectory recording screen 25 of Fig. 4. At this time, data on the trajectory of the chalk 2 is calculated as data that can be used in CAD or converted into data that can be used in CAD.

[0070] In S29 following S28, data on the path of the chalk 2 is temporarily saved. After the data on the path of the chalk 2 is temporarily saved in S29, the process proceeds to S30. Also, as mentioned above, if the determination in S22 is "NO," the process also proceeds to S30. In S30, it is determined whether the recording end button 25J has been touched. If the determination in S30 is "NO," i.e., if the determination is that the recording end button 25J has not been touched, the process returns to before S22 and repeats the processing from S22 onward. On the other hand, if the determination in S30 is "YES," i.e., if the determination is that the recording end button 25J has been touched, the process proceeds to S31. In S31, the project is saved. That is, the data on the inspection details, including the path of the chalk 2, is saved (saved). After the data is saved in S31, the process returns. That is, the process returns to the start via a return, and the processing from S21 onward is repeated. At this time, the screen 22 of the tablet PC 21 switches from the path recording screen 25 of FIG. 4 to the past record viewing screen 26 of FIG. 12.

[0071] The chalk holder 1, tablet PC 21, and tunnel inspection recording application according to the embodiment have the configurations described above, and their operation will now be described.

[0072] An inspector H visits the inspection site (tunnel T) and collects information on the condition of the wall 101 of tunnel T. At this time, the inspector H starts up a tunnel inspection recording app on the tablet PC 21. The inspector H also turns on the power switch 9 of the chalk holder 1. This links the chalk holder 1 to the tablet PC 21. The inspector H displays the track recording screen 25 of the tunnel inspection recording app on the screen 22 of the tablet PC 21 and records the inspection details. For example, when recording a crack 102 on the wall 101 of tunnel T, the inspector H identifies (inputs) the start point (origin) of the chalk marking in the front view 25B of the track recording screen 25.

[0073] Next, worker H presses the drawing switch 10 of the chalk holder 1 and traces the crack 102 with the chalk 2 of the chalk holder 1. As a result, the front view 25B of the trajectory recording screen 25 displays the trajectory of the chalk holder 1 while pressing the drawing switch 10, for example, the trajectory 31A of the chalk 2. At this time, the tablet PC 21 calculates or converts the trajectory of the chalk 2 into CAD data. Furthermore, worker H selects, for example, trajectory 31A from among the multiple trajectories 31A, 31B, and 31C displayed on the front view 25B. In this state, worker H touches the camera button 25L and activates the camera to capture the crack 102 corresponding to trajectory 31A. As a result, the trajectory 31A of the chalk 2 and the image 25E of the crack 102 are displayed in association with each other on the trajectory recording screen 25. Furthermore, the tablet PC 21 saves the trajectory 31A of the chalk 2 and the image 25E of the crack 102 in association with each other.

[0074] In addition, worker H can enter supplementary information about the deformation (e.g., crack 102) in the deformation information input field 25D as needed. Furthermore, if necessary, information about the deformation (e.g., crack 102) may be recorded by voice. After completing the on-site inspection work, worker H returns to the office or other location and creates a deformation development diagram (tunnel deformation development diagram) as shown in FIG. 6. Furthermore, if necessary, worker H creates a document that matches the deformation (e.g., crack 102) described in the deformation development diagram with an image taken at the site (e.g., image 25E). At this time, as shown in FIG. 5, worker H transfers data from the tablet PC 21 to the desktop PC 41 and uses this data to create the deformation development diagram (tunnel deformation development diagram) shown in FIG. 6 using CAD. In other words, documents to be submitted, such as a deformation development diagram, can be created using CAD.

[0075] As described above, according to the embodiment, the chalk holder 1 and the tablet PC 21 constitute a chalk tracing system. This chalk tracing system can trace and digitize the trajectory of the chalk 2 while the chalk holder 1 is marking with chalk. The tablet PC 21 can also link a captured photograph (image) to data on the trajectory of the chalk 2 (chalk trajectory tracing data). The tablet PC 21 can also calculate or convert the data on the trajectory of the chalk 2 (chalk trajectory tracing data) into data used in CAD. That is, the data on the trajectory of the chalk 2 (chalk trajectory tracing data) can be converted into CAD data. Therefore, the conventional series of steps of "drawing with chalk → copying to a field notebook → inputting into CAD" can be easily performed by using the chalk holder 1 for chalk marking. That is, the "drawing with chalk" and "copying to a field notebook" tasks can be performed together using the inspection record app on the chalk holder 1 and the tablet PC 21. The "input into CAD" task can also be easily performed by outputting data using the inspection record app.

[0076] Furthermore, the tunnel inspection recording app can link the trajectory of the chalk 2 (e.g., trajectories 31A, 31B, and 31C) with the photograph (image 25E) of the deformation (crack 102). This reduces the effort required to match these, or the risk of mismatching. Furthermore, it can prevent users from forgetting to record information in their field notebooks. Thus, in this embodiment, when a deformation (crack, peeling, etc.) is marked with chalk 2 during an infrastructure inspection, the trajectory of the chalk 2 can be traced and digitized. This reduces the work of copying inspection information into a field notebook. Furthermore, since the digitized data can be converted into CAD data, the time required to create an inspection report, such as a tunnel deformation development diagram (CAD drawing), can be significantly reduced. Furthermore, since the data of the traced trajectory of the chalk 2 can be linked with data such as photographs taken on-site, errors in creating documents can be reduced.

[0077] As described above, according to the embodiment, the chalk holder 1, which is a chalk holding device, is equipped with state quantity detection sensors 4 (4A, 4B, 4C) that detect state quantities related to the movement of the chalk holder 1 (chalk 2, main body 3), and a communication device 5 that transmits data on the state quantities detected by the state quantity detection sensors 4 (4A, 4B, 4C). Therefore, the trajectory of the chalk 2 held in the main body 3 of the chalk holder 1 can be obtained using the data transmitted from the communication device 5 of the chalk holder 1. Therefore, if chalk marking is performed using the chalk holder 1, it is possible to facilitate tasks (processing) that require information (data) on this chalk marking after the chalk marking.

[0078] According to the embodiment, the state quantity detection sensor 4 is composed of three sensors: an optical displacement sensor 4A, an acceleration sensor 4B, and a geomagnetic sensor 4C. Therefore, two-dimensional displacement data, three-dimensional acceleration data, and geomagnetic data of the choke holder 1 (choke 2, main body 3) can be transmitted from the communication device 5 of the choke holder 1. As a result, the three-dimensional trajectory of the choke 2 can be obtained with high accuracy using the data transmitted from the communication device 5 of the choke holder 1, i.e., the two-dimensional displacement data, the three-dimensional acceleration data, and the geomagnetic data. In addition, the three pieces of data can also be used to obtain with high accuracy the trajectory of the choke 2 converted into two dimensions.

[0079] According to the embodiment, the tablet PC 21, which is an information processing device (chalk trajectory information processing device), stores data on the trajectory of the chalk 2 calculated based on data transmitted from the chalk holder 1. Therefore, the stored data on the trajectory of the chalk 2 can be used to perform processes that require this data, such as creating a development map of the deformation using CAD. The tablet PC 21 also displays the trajectories 31A, 31B, and 31C of the chalk 2 calculated based on the data transmitted from the chalk holder 1 on the screen 22. Therefore, tasks that require the trajectories 31A, 31B, and 31C of the chalk 2 displayed on the screen 22, such as associating the trajectories 31A, 31B, and 31C of the chalk 2 with a photograph (image 25E) of the crack 102, can be performed. This facilitates tasks (processes) that require information (data) on the chalk markings.

[0080] According to the embodiment, the tablet PC 21 stores data on images captured by the rear camera and data on the trajectory of the chalk 2 in association with each other. Therefore, the stored image data and data on the trajectory of the chalk 2 can be used to perform processing requiring these data, such as creating a document that matches the deformation described in the deformation development diagram with images captured at the site, on a computer (tablet PC 21, desktop PC 41). The tablet PC 21 also displays the image 25E captured by the rear camera and the trajectories 31A, 31B, and 31C of the chalk 2 on the screen 22 in association with each other. Therefore, it is easy to determine which of the chalk markings (trajectories 31A, 31B, and 31C) the image 25E corresponds to, based on the image 25E and the trajectories 31A, 31B, and 31C displayed on the screen 22. This facilitates tasks (processing) requiring information (data) on the chalk markings.

[0081] According to the embodiment, the tablet PC 21 outputs data on the trajectory of the chalk 2 to the desktop PC 41, which is another information processing device. Therefore, the desktop PC 41 can also use the data on the trajectory of the chalk 2 to perform processing that requires this data. That is, the desktop PC 41 can also store the data on the trajectory of the chalk 2 and display the trajectory of the chalk 2 on the screen 22. Furthermore, this data can be used to create deformation development diagrams and materials. This also simplifies tasks (processing) that require information (data) on chalk markings.

[0082] According to the embodiment, the tunnel inspection record application, which is an application (chalk trajectory application) of the tablet PC 21, performs a process (storage process) to store data on the trajectory of the chalk 2 calculated based on data transmitted from the chalk holder 1. Therefore, the stored data on the trajectory of the chalk 2 can be used to perform processes that require this data. The tunnel inspection record application also performs a process (screen display process) to display the trajectory of the chalk 2 calculated based on data transmitted from the chalk holder 1 on the screen 22. Therefore, tasks that require this can be performed from the trajectories 31A, 31B, and 31C of the chalk 2 displayed on the screen 22. This facilitates tasks (processes) that require information (data) on the chalk markings.

[0083] In the embodiment, the state quantity detection sensor 4 is described as being composed of three sensors: an optical displacement sensor 4A, an acceleration sensor 4B, and a geomagnetic sensor 4C. However, the state quantity detection sensor is not limited to this, and various detection sensors capable of detecting state quantities related to the movement of the choke holder (choke, main body) can be used.

[0084] In the embodiment, the chalk holder 1 has been described as being used for chalk marking during tunnel inspection work. However, the chalk holder (chalk holding device) may also be used, for example, when writing with chalk on a blackboard in an educational facility such as a school. That is, the chalk holder (chalk holding device) can be used for any work that requires chalk trajectory information (data). Furthermore, the chalk is not limited to chalk itself, which colors an object in contact with it, but includes various components and tools that can color an object in contact with it. Furthermore, the chalk may be, for example, a component or tool that cannot color an object in contact with it. In this case, the chalk may be, for example, a cylindrical component that cannot be colored and can be held by the chalk holder. Alternatively, for example, the cylindrical component may be a spherical component, allowing for detection of displacement of the chalk holder (chalk holding device) in a configuration similar to that of a ball-type mouse. Furthermore, the chalk may be a tip portion integral with the main body of the chalk holder (chalk holding device). That is, the tip portion of the main body itself may be the chalk. In this case, this tip corresponds to the chalk and the chalk holder, and this tip may or may not be colorable.

[0085] In the embodiment, an example has been described in which the information processing device that receives data transmitted from the chalk holder 1 is a tablet PC 21, and another information processing device that outputs data from the tablet PC 21 is a desktop PC 41. However, the information processing device is not limited to a tablet PC, and various other information processing devices can be used, such as a laptop PC, a smartphone, a desktop PC, etc. The other information processing device is also not limited to a desktop PC, and various other information processing devices can be used, such as a tablet PC, a laptop PC, a smartphone, etc.

[0086] In the embodiment, the case where the trajectory of the chalk 2 is calculated by the tablet PC 21 has been described as an example. That is, in the embodiment, data on the state quantities (displacement, acceleration, geomagnetism) of the chalk holder 1 (chalk 2, main body 3) detected by the state quantity detection sensors 4 (4A, 4B, 4C) is transmitted from the chalk holder 1 to the tablet PC 21, and the trajectory of the chalk 2 is calculated by the tablet PC 21. However, this is not limiting, and for example, the trajectory of the chalk 2 may be calculated by the calculation unit 6 of the chalk holder 1. That is, the calculation unit 6 of the chalk holder 1 calculates the trajectory of the chalk 2 based on the data on the state quantities (displacement, acceleration, geomagnetism) of the chalk holder 1 (chalk 2, main body 3) detected by the state quantity detection sensors 4 (4A, 4B, 4C). In this case, the calculation unit 6 converts (performs a correction calculation) the three-dimensional trajectory of the chalk 2 obtained from, for example, three pieces of data (displacement, acceleration, geomagnetism) into a two-dimensional trajectory of the chalk 2. The calculation unit 6 of the chalk holder 1 then transmits the calculated trajectory of the chalk 2 to the tablet PC 21 via the communication device 5 of the chalk holder 1. In this case, the tablet PC 21 receives the data of the trajectory of the chalk 2 transmitted from the chalk holder 1 and stores this data. The tablet PC 21 also displays the trajectory of the chalk 2 transmitted from the chalk holder 1 on the screen 22.

[0087] In this way, the choke holder 1 (choke holding device) may be configured to include a main body 3 having a choke holding portion 3A at the tip side that holds the chalk 2, a state quantity detection sensor 4 provided on the main body 3 that detects state quantities (e.g., displacement, acceleration, geomagnetism) related to the movement of the main body 3, a choke trajectory calculation unit (computation unit 6) provided on the main body 3 that calculates the trajectory of the chalk 2 based on the state quantity data detected by the state quantity detection sensor 4, and a transmission unit (communication device 5) provided on the main body 3 that transmits the trajectory data calculated by the choke trajectory calculation unit (computation unit 6). In addition, the tablet PC 21 (information processing device) may be configured to include a receiving unit that receives data on the trajectory of the chalk 2 calculated by the chalk trajectory calculation unit (calculation unit 6) of the chalk holder 1 (chalk holding device), a memory unit that stores the data on the trajectory of the chalk 2 received from the chalk holder 1 (chalk holding device), i.e., the data on the trajectory of the chalk 2 calculated by the chalk trajectory calculation unit (calculation unit 6) of the chalk holder 1 (chalk holding device), and a screen that displays the trajectory of the chalk 2 received from the chalk holder 1 (chalk holding device), i.e., the trajectory of the chalk 2 calculated by the chalk trajectory calculation unit (calculation unit 6) of the chalk holder 1 (chalk holding device). Furthermore, the tunnel inspection recording app (application) may be configured to include a storage process for storing data on the trajectory of the chalk 2 received from the chalk holder 1 (chalk holding device), i.e., data on the trajectory of the chalk 2 calculated by the chalk trajectory calculation unit (calculation unit 6) of the chalk holder 1 (chalk holding device), and a screen display process for displaying the trajectory of the chalk 2 received from the chalk holder 1 (chalk holding device), i.e., the trajectory of the chalk 2 calculated by the chalk trajectory calculation unit (calculation unit 6) of the chalk holder 1 (chalk holding device). In these cases, the trajectory of the chalk 2 is calculated by the chalk trajectory calculation unit (calculation unit 6) of the chalk holder 1 (chalk holding device) from the data on the state quantities detected by the state quantity detection sensor 4, thereby reducing the computational load on the computation unit of the tablet PC 21 (information processing device). This also reduces the processing load on the tunnel inspection recording app (application).

[0088] According to the embodiment described above, the chalk holding device includes a state quantity detection sensor that detects a state quantity related to the movement of the main body of the chalk holding device, and a transmission unit that transmits data on the state quantity detected by the state quantity detection sensor. Therefore, the trajectory of the chalk held in the main body of the chalk holding device can be obtained using the data transmitted from the transmission unit of the chalk holding device. Therefore, if chalk marking is performed using the chalk holding device, it is possible to facilitate work (processing) that requires information (data) on the chalk marking after the chalk marking.

[0089] According to the embodiment, the state quantity detection sensor is composed of three sensors: an optical displacement sensor, an acceleration sensor, and a geomagnetic sensor. Therefore, two-dimensional displacement data, three-dimensional acceleration data, and geomagnetic data of the main body of the chalk holding device can be transmitted from the transmitter of the chalk holding device. This allows the three data transmitted from the transmitter of the chalk holding device, i.e., the two-dimensional displacement data, the three-dimensional acceleration data, and the geomagnetic data, to be used to accurately obtain a three-dimensional chalk trajectory. Furthermore, the three data can also be used to accurately obtain a two-dimensional chalk trajectory.

[0090] According to the embodiment, the information processing device (chalk trajectory information processing device) stores data on the chalk trajectory calculated based on data transmitted from the chalk holding device. Therefore, the stored chalk trajectory data can be used to perform processing that requires this data. Furthermore, the information processing device displays the chalk trajectory calculated based on the data transmitted from the chalk holding device on a screen. Therefore, tasks that require the chalk trajectory can be performed from the chalk trajectory displayed on the screen. These features facilitate tasks (processing) that require chalk marking information (data).

[0091] According to the embodiment, the information processing device (chalk trajectory information processing device) stores data of an image captured by a camera and data of the chalk trajectory in association with each other. Therefore, the stored image data and chalk trajectory data can be used to perform processing that requires these data. The information processing device also displays the image captured by the camera and the chalk trajectory in association with each other on a screen. Therefore, it is possible to easily determine which chalk marking the image corresponds to from the image and the chalk trajectory displayed in association with each other on the screen. This makes it possible to facilitate tasks (processing) that require information (data) of chalk markings.

[0092] According to the embodiment, the information processing device (chalk trajectory information processing device) outputs chalk trajectory data to another information processing device. Therefore, the other information processing device can also use the chalk trajectory data to perform processing that requires this data. In other words, the other information processing device can also store the chalk trajectory data and display the chalk trajectory on a screen. This also simplifies tasks (processing) that require chalk marking information (data).

[0093] According to the embodiment, an application (chalk trajectory application) of the information processing device performs a process (storage process) to store data on the chalk trajectory calculated based on data transmitted from the chalk holding device. Therefore, the stored chalk trajectory data can be used to perform processes that require this data. The application also performs a process (screen display process) to display on the screen the chalk trajectory calculated based on the data transmitted from the chalk holding device. Therefore, tasks that require this can be performed from the chalk trajectory displayed on the screen. These processes facilitate tasks (processes) that require chalk marking information (data).

[0094] According to an embodiment, the chalk holding device includes a state quantity detection sensor that detects state quantities related to the movement of the main body of the chalk holding device, a chalk trajectory calculation unit that calculates the trajectory of the chalk based on the state quantity data detected by the state quantity detection sensor, and a transmission unit that transmits the trajectory data calculated by the chalk trajectory calculation unit. Therefore, the trajectory of the chalk held on the main body of the chalk holding device can be obtained directly from the data transmitted from the transmission unit of the chalk holding device. Therefore, if chalk marking is performed using the chalk holding device, work (processing) requiring information (data) about the chalk marking after the chalk marking can be simplified. Furthermore, because the chalk trajectory calculation unit of the chalk holding device calculates the chalk trajectory from the state quantity data detected by the state quantity detection sensor, the computational load on the information processing device that receives the data transmitted from the chalk holding device can be reduced.

[0095] According to the embodiment, the information processing device stores data on the chalk trajectory calculated by the chalk holding device and transmitted from the chalk holding device. Therefore, the stored chalk trajectory data can be used to perform processing that requires this data. Furthermore, the information processing device displays the chalk trajectory calculated by the chalk holding device and transmitted from the chalk holding device on a screen. Therefore, tasks that require the chalk trajectory can be performed from the chalk trajectory displayed on the screen. This makes it possible to facilitate tasks (processes) that require chalk marking information (data). Furthermore, because the chalk trajectory is calculated by the chalk holding device, the calculation load on the information processing device can be reduced.

[0096] According to the embodiment, the application of the information processing device performs a process (storage process) to store the data of the chalk trajectory calculated by the chalk holding device and transmitted from the chalk holding device. Therefore, the stored chalk trajectory data can be used to perform processes that require this data. The application also performs a process (screen display process) to display the chalk trajectory calculated by the chalk holding device and transmitted from the chalk holding device on a screen. Therefore, tasks that require the chalk trajectory can be performed from the chalk trajectory displayed on the screen. This makes it possible to facilitate tasks (processes) that require chalk marking information (data). Moreover, because the chalk trajectory is calculated by the chalk holding device, the processing load of the application of the information processing device can be reduced. [Explanation of symbols]

[0097] 1 Choke holder (choke holding device) 2. Chalk 3 Main unit 3A Choke holder 4. State quantity detection sensor 4A Optical Displacement Sensor 4B Acceleration sensor 4C geomagnetic sensor 5. Communication device (transmitter) 21 Tablet PC (information processing device) 22 screens 41 Desktop PC (another information processing device)

Claims

1. A main body with a choke holder at the tip that holds the choke, a state quantity detection sensor provided on the main body for detecting a state quantity related to the movement of the main body; A choke holding device comprising: a transmitter provided in the main body and transmitting data on the state quantity detected by the state quantity detection sensor.

2. The state quantity detection sensor an optical displacement sensor that detects a two-dimensional displacement of the main body as the state quantity; an acceleration sensor that detects three-dimensional acceleration of the main body as the state quantity; a geomagnetic sensor that detects geomagnetism as the state quantity; 2. The choke holding device according to claim 1.

3. a receiving unit for receiving data transmitted from a transmitting unit of a choke holding device that holds the choke; a choke trajectory calculation unit that calculates the trajectory of the choke based on the data received by the receiving unit; a storage unit that stores data of the trajectory calculated by the choke trajectory calculation unit; and a screen on which the trajectory is displayed.

4. Equipped with a camera, The storage unit stores data of the image captured by the camera and data of the trajectory in association with each other, The image captured by the camera and the trajectory are displayed in association with each other on the screen.

4. The information processing apparatus according to claim 3,

5. Further provided is an output unit that outputs the trajectory data calculated by the choke trajectory calculation unit to another information processing device, 4. The information processing apparatus according to claim 3,

6. a chalk trajectory calculation process for calculating the trajectory of the chalk based on data received from a chalk holding device that holds the chalk; a storage process for storing data of the trajectory calculated in the choke trajectory calculation process; a screen display process for displaying the trajectory calculated in the choke trajectory calculation process on a screen; An application for an information processing device.

7. A main body with a choke holder at the tip that holds the choke, a state quantity detection sensor provided on the main body for detecting a state quantity related to the movement of the main body; a choke trajectory calculation unit provided in the main body and calculating a trajectory of the choke based on data of the state quantity detected by the state quantity detection sensor; A choke holding device comprising: a transmitter provided in the main body and transmitting data on the trajectory calculated by the choke trajectory calculation unit.

8. a receiving unit that receives data on the trajectory of the chalk transmitted from a transmitting unit of the chalk holding device that holds the chalk; a storage unit for storing the chalk trajectory data received by the receiving unit; and a screen on which the trajectory of the chalk received by the receiving unit is displayed.

9. A storage process for storing chalk trajectory data received from a chalk holding device that holds the chalk; A screen display process for displaying the trajectory of the chalk received from the chalk holding device on a screen; An application for an information processing device.

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