Electronic blackboard

Abstract

To provide an electronic blackboard that can improve the degree of freedom in photographing a construction picture, and can prevent the difference in displayed temperature between a thermometer and a small black board.SOLUTION: An electronic blackboard comprises: a temperature display area (18) that displays temperature information acquired from a thermometer; a construction information display area (16) that displays construction information of construction; and holding information display area (15) that displays whether the details displayed in the temperature display area (18) is in a holding state or in a non-holding state. In the holding state, the electronic blackboard displays the temperature display area (18), construction information display area (16), and holding information display area (15) simultaneously at different positions in the same screen.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an electronic whiteboard. [Background technology]

[0002] In civil engineering projects, etc., it is required to photograph the construction site so that a small blackboard on which the details of the work are written appears in the photograph, and to manage and record each process using the construction photographs, and to submit the construction photographs to the construction client, etc. It is also permitted to write small blackboard information electronically, and an electronic small blackboard system has been proposed that associates and records digital image data of photographs of the construction site with electronically entered small blackboard information (see, for example, Patent Document 1).

[0003] Such conventional electronic small blackboard systems have the advantage that construction information such as the name of the project, type of work, location, date, contractor name, etc., which is pre-recorded for each construction site, can be easily input and displayed. Another advantage is that selecting pre-recorded construction information prevents incorrect input at the site. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-065668 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in road paving work, for example, temperature control before and after compaction of asphalt pavement requires that actual measurements taken at the construction site be written on a small blackboard and included in site photographs along with the thermometer. In such cases, the small blackboard must be placed close to the thermometer in contact with the road surface, and construction photographs must be taken from a position close enough to the thermometer's temperature display so that it is visible. This narrows the scope of construction photographs to include both the small blackboard and the thermometer, reducing the degree of freedom when taking construction photographs. Furthermore, workers must stay close to the construction site to check the measured temperatures, write them on the small blackboard, position the small blackboard, and take construction photographs, which requires the allocation of human and time resources to ensure safety.

[0006] Furthermore, if the road surface temperature changes and the thermometer reading changes during the series of tasks in which a worker checks the temperature measured by the thermometer, writes it down on the small blackboard, places the small blackboard, and takes construction photos, the contents displayed on the small blackboard and the thermometer will differ. This means that the worker has to start over by writing it down on the small blackboard, which reduces work efficiency. Furthermore, with conventional electronic small blackboard systems, the electronic small blackboard is superimposed on the photographed construction photos, making it difficult for workers to check and correct any discrepancies between the electronically recorded temperature and the thermometer reading.

[0007] Therefore, the present invention has been developed in consideration of the above-mentioned conventional problems, and aims to provide an electronic blackboard that improves the freedom in taking construction photographs and can prevent differences in the displayed temperature between the thermometer and the small blackboard. [Means for solving the problem]

[0008] In order to solve the above problems, the electronic whiteboard of the present invention comprises a temperature display area that displays temperature information obtained from a thermometer, a construction information display area that displays construction information, and a retained information display area that displays whether the display content of the temperature display area is in a retained state or a non-retained state, and is characterized in that in the retained state, the temperature display area, the construction information display area, and the retained information display area are displayed simultaneously at different positions on the same screen.

[0009] In the electronic blackboard of the present invention, when in the held state, the temperature display area, construction information display area, and held information display area are simultaneously displayed in different positions on the same screen, thereby improving the freedom in taking construction photographs and preventing differences in the displayed temperature between the thermometer and the small blackboard.

[0010] In one aspect of the present invention, the retention information display area also serves as a retention input section for inputting retention of the temperature information.

[0011] In one aspect of the present invention, the retained information display area has different chromaticity, brightness, or saturation between the retained state and the non-retained state.

[0012] In addition, in one aspect of the present invention, a location information display area is provided that displays location information acquired from a location information acquisition unit, and the location information display area is displayed simultaneously at a different position from the temperature display area, the construction information display area, and the retention information display area.

[0013] In one aspect of the present invention, the construction information display area also serves as a construction information input section for inputting the construction information.

[0014] In one aspect of the present invention, an information communication unit that performs information communication via an electric information communication line is provided, and transmits the temperature information and the construction information to a construction data server. [Effects of the Invention]

[0015] The present invention can provide an electronic blackboard that improves the degree of freedom in taking construction photographs and can prevent differences in the displayed temperatures between the thermometer and the small blackboard. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a schematic diagram illustrating the taking of construction photographs using an electronic whiteboard 4 according to the first embodiment. FIG. [Figure 2] 1 is a schematic diagram showing a configuration example of a construction information management system using an electronic whiteboard 4 according to a first embodiment. [Figure 3] 3A and 3B are schematic plan views showing examples of the screen of the display operation terminal 10, where FIG. 3A shows the main screen 11 before information input, FIG. 3B shows the setting screen 12, FIG. 3C shows the main screen 11 in the non-held state, and FIG. 3D shows the main screen 11 in the held state. [Figure 4] 10 is a flowchart showing a method for taking construction photographs using an electronic whiteboard 4. DETAILED DESCRIPTION OF THE INVENTION

[0017] (First embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The same or equivalent components, parts, and processes shown in each drawing will be assigned the same reference numerals, and duplicate explanations will be omitted as appropriate. FIG. 1 is a schematic diagram illustrating the taking of construction photographs using an electronic whiteboard 4 according to this embodiment. FIG. 2 is a schematic diagram showing an example of the configuration of a construction information management system using an electronic whiteboard 4 according to this embodiment.

[0018] As shown in Figures 1 and 2, in this embodiment, a road surface 1 is constructed using a construction device 2, and a worker 3 takes construction photos of an electronic whiteboard 4 and the construction site using a photographing device 5. The electronic whiteboard 4 also includes a display operation terminal 10, a position information acquisition unit 20, a temperature measurement unit 30, and an information communication unit 40. As shown in Figure 2, the electronic whiteboard 4 is connected to a construction data server 6 via an electrical information communication line 100 so as to be able to communicate information with the construction data server 6. The construction data server 6 includes a construction information database 110, a measurement result recording unit 120, and an information communication unit 130.

[0019] The road surface 1 is a construction location related to the information displayed on the electronic whiteboard 4, and is the target of construction by the construction device 2. The road surface 1 is also the target of temperature measurement by the worker 3 using the temperature measurement unit 30. The specific type and process of construction of the road surface 1 is not limited, but one example is the surface of an asphalt pavement in asphalt paving work.

[0020] The construction equipment 2 is a device for carrying out a predetermined process on the road surface 1 by performing a predetermined operation on the road surface 1. In FIG. 1, the construction equipment 2 is shown in the form of a vehicle, but the shape and size are not limited, and it may be a device that is placed on the road surface 1 and operates, or a portable device that is carried and operated by a worker. The specific type of construction equipment 2 is not limited, but examples include an asphalt finisher in asphalt paving work and a rolling device.

[0021] The worker 3 is a worker who operates the electronic whiteboard 4 to measure the temperature of the road surface 1 and uses the photographing device 5 to take construction photos including the electronic whiteboard 4 and the road surface 1. The worker 3 is usually the on-site work supervisor, but a worker who works using the construction equipment 2 may assist in measuring the temperature and taking photos. Also, while FIG. 1 shows one worker 3, the series of tasks may be performed by multiple people, with the work divided among them.

[0022] The electronic whiteboard 4 is a device that displays construction information related to the construction site and temperature information of the road surface 1. In the example shown in FIG. 1, the electronic whiteboard 4 includes a display operation terminal 10, a position information acquisition unit 20, and a temperature measurement unit 30. The electronic whiteboard 4 only needs to be able to display the construction information and temperature information, and may not include the position information acquisition unit 20 or the temperature measurement unit 30. Furthermore, the position information acquisition unit 20 and the temperature measurement unit 30 are capable of communicating position information and temperature information with the display operation terminal 10, respectively.

[0023] The photographing device 5 is a device operated by the worker 3 to take construction photographs including the road surface 1 and the electronic whiteboard 4. The specific configuration of the photographing device 5 is not limited, and a conventionally known digital camera can be used. In addition, an information communication device may be provided in the photographing device 5, so that digital data of the construction photographs can be transmitted to the construction data server 6 or the display operation terminal 10 via the electric information communication line 100, wireless communication, etc.

[0024] The construction data server 6 is an information processing device capable of communicating with the electronic whiteboard 4 via the electric information communication line 100. As described above, the construction data server 6 includes a construction information database 110, a measurement result recording unit 120, and an information communication unit 130. The specific configuration of the construction data server 6 is not limited, and examples include a CPU (Central Processing Unit) for information processing, a memory device, a recording medium, a communication device, etc. The construction data server 6 realizes the functions of the construction information database 110, the measurement result recording unit 120, and the information communication unit 130 by executing predetermined processing according to a predetermined program. In addition, the construction data server 6 may be provided with learned data using machine learning and execute predetermined processing using the learned data.

[0025] The display operation terminal 10 is a device that has at least a display screen and displays various information on the display screen. The specific configuration of the display operation terminal 10 is not limited, and examples include a device that includes a CPU for information processing, a memory device, a recording medium, a communication device, and an input device (not shown) such as a touch panel or a keyboard. The display operation terminal 10 realizes the function of the electronic whiteboard 4 by executing predetermined processing according to a predetermined program. More specifically, the worker 3 operates the input device of the display operation terminal 10 to start an application program that executes the function of the electronic whiteboard 4, thereby enabling operation and display using a main screen 11 and a setting screen 12, which will be described later, etc.

[0026] Although the specific configuration of the display operation terminal 10 is not limited, it is preferable that the size and weight are highly portable so that the worker 3 can carry and place it at a desired position at the construction site, and it is preferable to use a tablet terminal or a mobile information terminal. Also, the position information acquisition unit 20, temperature measurement unit 30, and information communication unit 40 may be integrally incorporated inside the display operation terminal 10, and the display operation terminal 10 itself may be used as the electronic whiteboard 4. Also, the position information acquisition unit 20, temperature measurement unit 30, and information communication unit 40 may be provided separately from the display operation terminal 10 and connected to enable information communication via a wired or wireless connection.

[0027] The information displayed by the display operation terminal 10 is not limited, but at least construction information and temperature information are displayed. As will be described later, the display operation terminal 10 acquires location information measured by the location information acquisition unit 20 and displays it in the location information display area 19. The display operation terminal 10 also acquires temperature information measured by the temperature measurement unit 30 and displays it in the temperature display area 18. The display operation terminal 10 also displays construction information related to the construction work in the construction information display area 16. The display operation terminal 10 also displays hold status information indicating whether the display content in the temperature display area 18 is in a hold state or a non-hold state in the hold button area 15. The display operation terminal 10 may also display time information such as the date and time in the time display area, and acquire weather information, etc. from a weather information acquisition unit (not shown) and display it in the weather information display area.

[0028] The location information acquisition unit 20 is a part that acquires location information of the construction site. The specific configuration of the location information acquisition unit 20 is not limited, and conventionally known global positioning systems (GPS: Global Positioning System), satellite positioning systems (GNSS: Global Navigation Satellite System), base station positioning by telecommunications carriers, etc. can be used. The location information acquisition unit 20 may be provided inside the display / operation terminal 10, may be provided integrally with the temperature measurement unit 30, or may be configured separately from the electronic whiteboard 4. The location information acquisition unit 20 is capable of communicating information with the display / operation terminal 10 via a wired or wireless connection, and can transmit the acquired location information to the display / operation terminal 10.

[0029] The temperature measurement unit 30 is a unit that acquires temperature information of the road surface 1, and corresponds to the thermometer in the present invention. The specific configuration of the temperature measurement unit 30 is not limited, and a conventionally known thermistor thermometer, thermocouple thermometer, radiation thermometer, or the like can be used. The temperature measurement unit 30 may be provided inside the display / operation terminal 10, or may be configured separately from the electronic whiteboard 4. The temperature measurement unit 30 is capable of communicating information with the display / operation terminal 10 via a wired or wireless connection, and can transmit measured temperature information to the display / operation terminal 10. As will be described later, the temperature information measured by the temperature measurement unit 30 is displayed in the temperature display area 18 of the display / operation terminal 10, so the temperature measurement unit 30 does not necessarily have to have a unit that displays temperature information.

[0030] The information communication unit 40 is a part that communicates information with the construction data server 6 via the electric information communication line 100. The specific configuration of the information communication unit 40 is not limited, and a conventionally known optical fiber network, mobile information communication network, satellite information communication network, wired LAN (Local Area Network), wireless LAN, etc. can be used. The electronic whiteboard 4 uses the information communication unit 40 to communicate information with the construction data server 6 via the electric information communication line 100, and transmits and receives construction information, temperature information, location information, construction photo data, etc.

[0031] The construction information database 110 is a database realized by the hardware and software provided in the construction data server 6, and is the part that records data related to construction as construction information. Examples of construction information recorded in the construction information database 110 include the name of the construction, the type of work, the range of control values, and a rough sketch. The construction information recorded in the construction information database 110 may be added or updated as appropriate based on various information transmitted and received by the information communication unit 40 and the information communication unit 130 via the electric information communication line 100.

[0032] The measurement result recording unit 120 is a storage device provided in the construction data server 6, and is a unit that records measurement results related to construction work. Measurement results recorded in the measurement result recording unit 120 include location information, temperature information, construction photos, weather information, etc. The measurement results recorded in the measurement result recording unit 120 may be added or updated as appropriate based on various information transmitted and received by the information communication unit 40 and the information communication unit 130 via the electric information communication line 100.

[0033] The information communication unit 130 is a part that communicates information with the electronic whiteboard 4 via the electric information communication line 100. The specific configuration of the information communication unit 130 is not limited, and a conventionally known optical fiber network, mobile information communication network, satellite information communication network, wired LAN, wireless LAN, etc. can be used. The construction data server 6 uses the information communication unit 130 to communicate information with the electronic whiteboard 4 via the electric information communication line 100, and transmits and receives construction information, temperature information, location information, construction photo data, etc.

[0034] 3 is a schematic plan view showing an example of the screen of the display operation terminal 10, where Fig. 3(a) shows the main screen 11 before information is input, Fig. 3(b) shows the setting screen 12, Fig. 3(c) shows the main screen 11 in an unheld state, and Fig. 3(d) shows the main screen 11 in a held state. As described above, the display operation terminal 10 starts an application program that realizes the functions of the electronic whiteboard 4 from the startup screen, thereby displaying the main screen 11, and operations on the main screen 11 and screen transitions between the main screen 11 and the setting screen 12 are performed in response to input from the input unit.

[0035] As shown in FIG. 3(a), the display operation terminal 10 has a main screen 11 including a setting button area 13, a recording button area 14, a hold button area 15, a construction information display area 16, a management information display area 17, a temperature display area 18, and a location information display area 19. On the main screen 11, the setting button area 13, the recording button area 14, the hold button area 15, the construction information display area 16, the management information display area 17, the temperature display area 18, and the location information display area 19 are simultaneously displayed in different positions. As shown in FIG. 3(b), the display operation terminal 10 also has a setting screen 12. In addition to the main screen 11 and the setting screen 12, the display operation terminal 10 can display screens for executing various functions, such as a start-up screen and an information communication screen.

[0036] The main screen 11 is a screen that is displayed when the function of the electronic whiteboard 4 is activated on the display operation terminal 10. In the example shown in FIG. 3, a setting button area 13, a record button area 14, and a hold button area 15 are arranged side by side as an operation section on the left edge of the screen. Each area of ​​the operation section is a display area that displays characters and colors, and also functions to input operations using an input section such as a touch panel. The area of ​​the main screen 11 other than the operation section is a bulletin board, and as described above, the bulletin board has a construction information display area 16, a management information display area 17, a temperature display area 18, and a location information display area 19. The bulletin board needs to display (display) various information with good visibility, so it has a larger area than the operation section.

[0037] The setting screen 12 is a screen that is displayed by screen transition when the setting button area 13 is operated on the display operation terminal 10. The content of the setting screen 12 is not limited, and various settings for the functions of the electronic whiteboard 4 are input and changed. In the example shown in FIG. 3(b), an area for inputting authentication information when accessing the construction data server 6 via the electric information communication line 100, an area for inputting whether to switch to local measurement mode without performing information communication with the construction data server 6, an area for setting a port for information communication with the temperature measurement unit 30, etc. are shown. In addition, the setting screen 12 has multiple transition screens, and construction information may be downloaded from the construction information database 110 of the construction data server 6 and recorded in the display operation terminal 10.

[0038] The setting button area 13 is an area displayed on the operation unit of the display operation terminal 10, and is used to input a screen transition instruction to the setting screen 12. The input method using the setting button area 13 is not limited, and examples include input using a touch panel, input using a pointing device, etc.

[0039] The record button area 14 is displayed on the operation unit of the display operation terminal 10, and is an area for inputting a recording instruction for the position information, temperature information, etc. acquired by the display operation terminal 10. When a recording instruction is input from the record button area 14, the display operation terminal 10 records the position information, temperature information, etc. in a storage device included in the display operation terminal 10 or in the measurement result recording unit 120 of the construction data server 6. The input method using the record button area 14 is not limited, and examples include input using a touch panel or input using a pointing device.

[0040] The hold button area 15 is an area displayed on the operation unit of the display operation terminal 10, and indicates whether the display contents of the temperature display area 18 and the position information display area 19 are in a held state or a non-held state. Therefore, the hold button area 15 corresponds to the held information display area in the present invention. The hold button area 15 also functions as an area for inputting a switching instruction to switch the display contents of the temperature display area 18 and the position information display area 19 between a held state and a non-held state. Therefore, the hold button area 15 also serves as the hold input unit in the present invention. The input method using the hold button area 15 is not limited, and examples include input using a touch panel and input using a pointing device.

[0041] There are no particular limitations on the specific method of displaying the held state and non-held state in the hold button area 15, and one example is to make the chromaticity, brightness, or saturation different between the held state and the non-held state. More specifically, in the non-held state, the chromaticity, brightness, and saturation of the hold button area 15 are displayed in monochrome, the same as the other areas, and in the held state, the hold button area 15 is filled with a primary color. Also, the hold button area 15 may display text information or an icon to indicate whether it is in the held state or non-held state.

[0042] The construction information display area 16 is an area displayed on the operation unit of the display / operation terminal 10 to display various types of construction information. The construction information display area 16 also functions as an area for inputting instructions to select appropriate construction information corresponding to the construction site where temperature measurement and photography are to be performed. Therefore, the construction information display area 16 also serves as the construction information input unit of the present invention. The construction information displayed in the construction information display area 16 may be pre-recorded in the storage device of the display / operation terminal 10 or may be downloaded from the construction information database 110 of the construction data server 6. The input method using the hold button area 15 is not limited, and examples include input using a touch panel or a pointing device. More specifically, multiple attributes of the construction information, such as the construction name, item, and material type, may be input and displayed, and multiple pull-down menus may be provided.

[0043] The management information display area 17 is an area that displays the temperature control range corresponding to the construction information selected in the construction information display area 16. The construction information selected and displayed in the construction information display area 16 includes the name of the work, the item, the type of material, etc., and the temperature control information recorded in association with this information is displayed in the management information display area 17. An alert may be displayed in the management information display area 17 if the temperature information displayed in the temperature display area 18 is outside the control range.

[0044] The temperature display area 18 is an area that displays the temperature of the road surface 1 obtained from the temperature measurement unit 30. In the non-hold state, the temperature information displayed in the temperature display area 18 is updated as needed to reflect the temperature measured by the temperature measurement unit 30, and in the hold state, the temperature at the time when the hold instruction was input from the hold button area 15 is continuously displayed. It is preferable that the display of temperature information in the temperature display area 18 has a larger area for characters and images than the information displayed in other areas (the setting button area 13, the record button area 14, the hold button area 15, the construction information display area 16, the management information display area 17, and the location information display area 19).

[0045] The location information display area 19 is an area that displays location information acquired from the location information acquisition unit 20. The specific content of the location information is not limited, but examples include latitude information and longitude information. Here, an example is shown in which the location information display area 19 is arranged, but the main screen 11 may have a screen configuration in which the location information display area 19 is not arranged.

[0046] 4 is a flowchart showing a method for taking construction photographs using the electronic whiteboard 4. First, the display operation terminal 10 is turned on and the application program of the electronic whiteboard 4 is started, thereby executing the temperature measuring and recording method of the present invention.

[0047] In the operation screen display step of step S1, the display operation terminal 10 displays the main screen 11 on the screen as the operation screen. Here, the main screen 11 shown in Fig. 3(a) is shown as the operation screen, but an operation screen for inputting information and instructions may be prepared separately from the main screen 11, and may be switched between the main screen 11 and the setting screen 12. After the operation screen is displayed, the process proceeds to step S2.

[0048] In the mode selection process of step S2, the worker 3 switches to a mode selection screen on the operation screen and selects the operation mode of the electronic whiteboard 4. Specifically, using a touch panel or a pointing device, the worker 3 operates the setting button area 13 on the main screen 11 to switch to the setting screen 12, and selects the operation mode on the setting screen 12. As an example, the worker 3 checks the checkbox for "Use in local measurement mode" displayed on the setting screen 12 shown in FIG. 3(b) to select the local measurement mode, or checks it off to select the cloud collaboration mode. After selecting the operation mode, the display on the display operation terminal 10 is switched back to the operation screen, and the process proceeds to step S3.

[0049] Here, when the local measurement mode is selected, the electronic whiteboard 4 does not communicate with the construction data server 6 using the information communication unit 40. In the local measurement mode, the display operation terminal 10 reads construction information and records measurement results using a built-in or connected storage device. When the cloud linkage mode is selected, the electronic whiteboard 4 communicates with the construction data server 6 using the information communication unit 40. In the cloud linkage mode, the display operation terminal 10 reads construction information and records measurement results using the construction information database 110 and the measurement result recording unit 120 of the construction data server 6 connected via the electrical information communication line 100. Because the local measurement mode does not require information communication with the construction data server 6 via the electrical information communication line 100, it can operate even in situations where it is difficult to secure a communication line, such as mountainous areas, remote areas, inside tunnels, and during recovery work in disaster-stricken areas.

[0050] In the construction information input process of step S3, the worker 3 inputs construction information from the operation screen. Specifically, the worker 3 uses a touch panel or pointing device to operate the construction information display area 16 on the main screen 11 to select information corresponding to the construction site. Here, if the electronic whiteboard 4 is operating in local measurement mode, appropriate content is selected from the construction information previously recorded in the storage device. If the electronic whiteboard 4 is operating in cloud collaboration mode, appropriate content is selected from the construction information downloaded from the construction data server 6. The method of selecting and inputting the construction information is not limited, and one example is to select from options displayed in a pull-down menu. After inputting the construction information is completed, the process proceeds to step S4.

[0051] In the position information measurement process of step S4, the position information acquisition unit 20 measures the position of the construction site and transmits the position information to the display operation terminal 10. The display operation terminal 10 records the position information acquired from the position information acquisition unit 20 in a memory or storage device. After acquisition of the position information is completed, the process proceeds to step S5.

[0052] In the temperature measurement step of step S5, the temperature measurement unit 30 measures the road surface temperature at the construction site and transmits the temperature information to the display operation terminal 10. The display operation terminal 10 records the temperature information acquired from the temperature measurement unit 30 in a memory or storage device. After acquiring the temperature information, the process proceeds to step S6. Here, an example is shown in which the position information measurement step and the temperature measurement step are executed in the order of steps S4 and S5, but the order of execution of both steps may be reversed, or they may be executed simultaneously.

[0053] In the position temperature display process of step S6, the display operation terminal 10 displays the acquired temperature information in the temperature display area 18, and the position information in the position information display area 19. The display operation terminal 10 also displays the construction information in the construction information display area 16, and the temperature management range in the management information display area 17. After simultaneously displaying various information in each area of ​​the main screen 11, the process proceeds to step S7. The display operation terminal 10 repeatedly executes steps S4 to S6 in the non-holding state, and therefore the temperature information displayed in the temperature display area 18 of the main screen 11 and the position information displayed in the position information display area 19 are updated as needed.

[0054] In the hold determination step of step S7, the display operation terminal 10 determines whether an on operation has been performed on the hold button area 15, and if an on operation has been performed, displays a hold state in the hold button area 15 and proceeds to step S8. If an on operation has not been performed, the display operation terminal 10 displays a non-hold state in the hold button area 15 and proceeds to step S4.

[0055] In the screen hold process of step S8, the display operation terminal 10 stops updating the temperature information displayed in the temperature display area 18 and the position information displayed in the position information display area 19, and continues to display the temperature information and position information at the time when the on operation was executed in the hold button area 15 in the hold determination process. The display operation terminal 10 also simultaneously displays the temperature information in the temperature display area 18, the position information in the position information display area 19, the construction information in the construction information display area 16, the management range in the management information display area 17, and the hold status of the hold button area 15 in different areas on the main screen 11. After displaying the hold screen with the information update stopped, the process proceeds to step S9.

[0056] In the information recording step of step S9, the worker 3 operates the record button area 14 to record the temperature information and position information displayed in the screen hold step. Here, if the electronic whiteboard 4 is operated in the local measurement mode, the temperature information and position information are recorded in association with the construction information in the storage device of the display operation terminal 10. If the electronic whiteboard 4 is operated in the cloud linkage mode, the temperature information and position information are recorded in association with the construction information in the measurement result recording unit 120 of the construction data server 6. In addition, the hold screen displayed on the main screen 11 may be recorded as a captured image. In addition, the display operation terminal 10 may display a recording state in the record button area 14. After recording the temperature information and position information, the temperature measurement and recording method ends.

[0057] In the above-mentioned screen holding step or information recording step, the worker 3 places the display operation terminal 10 at the construction site and takes a construction photograph with the photographing device 5 so that the main screen 11 is included with the construction site as the background.

[0058] As described above, in the electronic whiteboard 4 of this embodiment, in the held state, the temperature display area 18, the construction information display area 16, and the hold button area 15 are simultaneously displayed in different positions on the same screen. This improves the degree of freedom in taking construction photos and makes it possible to prevent differences in the displayed temperature between the thermometer and the small whiteboard.

[0059] Furthermore, by taking a photograph of the display operation terminal 10 with the main screen 11 displayed by the camera 5 with the construction site in the background, it is possible to take a construction photograph with good visibility of the construction site situation, construction information, and the temperature of the object to be managed. In addition, by simultaneously displaying the location information display area 19 on the main screen 11, the location of the construction site can also be easily recorded.

[0060] Furthermore, by making the chromaticity, brightness or saturation of the hold button area 15 different between the held state and the non-held state, it is possible to easily determine whether the main screen 11 is in a state where it is OK to photograph it with the photographing device 5, thereby improving workability.

[0061] (Second embodiment) Next, a second embodiment of the present invention will be described. Description of content that overlaps with the first embodiment will be omitted. In the first embodiment, the electronic whiteboard 4 and the photographing device 5 are configured as separate entities, and the photographing device 5 is used to photograph the construction information, temperature information, and storage information displayed on the electronic whiteboard 4. However, the electronic whiteboard 4 and the photographing device 5 may be configured as an integrated unit.

[0062] In this case, the worker 3 operates the electronic whiteboard 4 to take a site photograph including the road surface 1 and the temperature measurement unit 30 using the photographing device 5 integrated into the electronic whiteboard 4. The display operation terminal 10 also captures the screen including the displayed construction information display area 16, temperature display area 18, hold button area 15, and location information display area 19, and synthesizes them so that they are superimposed within a predetermined range of the site photograph, thereby creating a construction photograph.

[0063] In addition, the display operation terminal 10 may transmit the synthesized construction photograph to the construction data server 6 via the electrical information communication line 100, and record the construction photograph, temperature information, and location information in the construction information database 110 or the measurement result recording unit 120.

[0064] In the electronic whiteboard 4 of this embodiment, in the held state, the temperature display area 18, construction information display area 16, and hold button area 15 are simultaneously displayed in different positions within the captured main screen 11. This improves the degree of freedom in taking construction photos and also makes it possible to prevent discrepancies in the displayed temperature between the thermometer and the small whiteboard.

[0065] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. [Explanation of symbols]

[0066] 1…road surface 2...Construction equipment 3...Worker 4...Electronic whiteboard 5...Photographing equipment 6...Construction data server 10...Display operation terminal 20…Location information acquisition unit 30…Temperature measurement section 40...Ministry of Information and Communications 100...Telecommunications lines 110...Construction information database 120...Measurement result recording section 130…Ministry of Information and Communications 11...Main screen 12...Settings screen 13...Settings button area 14...Record button area 15...Hold button area 16…Construction information display area 17…Management information display area 18…Temperature display area 19…Location information display area

Claims

1. a temperature display area that displays temperature information obtained from the thermometer; a construction information display area for displaying construction information; a retention information display area that displays whether the display content of the temperature display area is in a retention state or a non-retention state, In the held state, the temperature display area, the construction information display area, and the held information display area are simultaneously displayed at different positions on the same screen.

2. The electronic whiteboard according to claim 1, The electronic whiteboard is characterized in that the retained information display area also serves as a retained input section for inputting the retained temperature information.

3. The electronic whiteboard according to claim 1, The electronic whiteboard is characterized in that the retained information display area has different chromaticity, brightness, or saturation in the retained state and the non-retained state.

4. The electronic whiteboard according to claim 1, a location information display area for displaying the location information acquired from the location information acquisition unit; The electronic whiteboard is characterized in that the position information display area is simultaneously displayed at a position different from that of the temperature display area, the construction information display area, and the retention information display area.

5. The electronic whiteboard according to claim 1, The electronic whiteboard is characterized in that the construction information display area also serves as a construction information input section for inputting the construction information.

6. 6. An electronic whiteboard according to claim 1, It has an information and communication department that communicates information through electric information and communication lines, The electronic whiteboard transmits the temperature information and the construction information to a construction data server.

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