Assistance information-providing method, construction site assistance system, and terminal device

Abstract

This assistance information-providing method is for a construction site assistance system (10) that is connected to a terminal device (20) via a network and that stores a construction plan drawing including a first building material symbol (60) and a second building material symbol (60). The assistance information-providing method includes: recognizing the first building material symbol (60) included in the construction plan drawing; causing the terminal device (20) to display, by superimposing on the construction plan drawing, a first identification mark (611) indicating the recognized first building material symbol (60); recognizing the second building material symbol (60) included in the construction plan drawing; causing the terminal device (20) to display, by superimposing on the construction plan drawing, a second identification mark (612) indicating the recognized second building material symbol (60); and, when the distance between the first display position of the first identification mark (611) and the second display position of the second identification mark (612) is within a prescribed value, causing the terminal device (20) to display, by superimposing on the construction plan drawing, a warning mark (62) indicating that the first identification mark (611) and the second identification mark (612) are being superimposed on each other.

Description

Support information providing method, construction site support system and terminal device

[0001] The present disclosure relates to a support information providing method, a construction site support system, and a terminal device.

[0002] A technique has been disclosed for calculating the cost of electrical work by extracting (picking out) the names and numbers of electrical appliances from building design drawings and adding them up (see, for example, Patent Document 1).

[0003] Publication No. 2020-181405

[0004] The present disclosure aims to provide a support information providing method, a construction site support system, and a terminal device that significantly reduce the time required for picking out building material symbols while reducing the occurrence of oversights in the process of picking out building material symbols.

[0005] One aspect of the support information providing method according to the present disclosure is a support information providing method in a construction site support system that is connected to a terminal device via a network and stores a construction floor plan including a first building material symbol and a second building material symbol, wherein the method recognizes the first building material symbol included in the construction floor plan, and displays a first identification symbol representing the recognized first building material symbol on the terminal device, superimposed on the construction floor plan, recognizes the second building material symbol included in the construction floor plan, and displays a second identification symbol representing the recognized second building material symbol on the terminal device, and, if the distance between a first display position of the first identification symbol and a second display position of the second identification symbol is within a predetermined value, displays a warning symbol indicating that the first identification symbol and the second identification symbol are overlapping on the construction floor plan, superimposed on the construction floor plan, on the terminal device.

[0006] The present disclosure can be realized not only as the support information providing method, but also as a program for causing a computer to execute the support information providing method, and further as a computer-readable recording medium storing the program.

[0007] The support information providing method, construction site support system, and terminal device disclosed herein can significantly reduce the time required to pick out building material symbols while reducing the occurrence of oversights in the process of picking out building material symbols.

[0008] FIG. 1 is a block diagram showing the functional configuration of a construction site support system according to an embodiment. FIG. 2 is a schematic diagram of a design drawing according to an embodiment. FIG. 3 is a diagram showing legend symbol information in a design drawing according to an embodiment. FIG. 4 is a diagram showing picking result information in a construction site support system according to an embodiment. FIG. 5 is a diagram showing picking legend symbol information in a construction site support system according to an embodiment. FIG. 6 is a schematic diagram of a picking design drawing in a construction site support system according to an embodiment. FIG. 7 is a sequence diagram showing the operation of a construction site support system according to an embodiment. FIG. 8 is a flowchart showing the operation of a construction site support system according to an embodiment. FIG. 9 is a diagram showing an example of building material symbols in the operation of a construction site support system according to the present embodiment. FIG. 10 is a diagram showing a situation in which a warning display is displayed in the operation of a construction site support system according to the present embodiment. FIG. 11 is a diagram showing an example of a screen display in the operation of a construction site support system according to the present embodiment.

[0009] (Insights gained by the inventor) Conventionally, workers would visually check and pick out the building material symbols representing the target equipment, such as automatic fire alarms and wiring devices, from the construction floor plan, tally up the building material symbols for each piece of target equipment, and then create an estimate.

[0010] A construction plan contains a huge number of building material symbols, with the number exceeding 100. Furthermore, the size of each symbol is small, so the task of manually selecting each symbol is extremely inefficient and time-consuming. This increases the man-hours required to create an estimate. Given these circumstances, there is a need to reduce the time required for this task.

[0011] Patent Document 1 also discloses a business that calculates electrical work costs by extracting (picking out) the names and quantities of electrical appliances from building design drawings provided by a customer and accumulating these. Patent Document 1 also points out the problem that in electrical work cost calculations, the work of picking out electrical appliance symbols and text must essentially be done manually, resulting in very low work efficiency. Patent Document 1 discloses a technology that extracts symbols similar to multiple symbols defined in a legend from the actual design drawings in image data by shifting a rectangular dot pattern of multiple symbols by one dot in a specified rectangular area and comparing it with the design drawing to calculate a correlation coefficient. Symbols whose correlation coefficient function calculated for each symbol exceeds a predetermined threshold and whose neighboring symbols do not exceed the predetermined threshold are extracted as correct. However, Patent Document 1 only extracts electrical appliance symbols and text, and further improvement is needed.

[0012] In this aspect, a first identification display representing a first building material symbol is superimposed on a construction floor plan and displayed on a terminal device, and a second identification display representing a second building material symbol is superimposed on a construction floor plan that is identical to the construction floor plan and displayed on a terminal device.

[0013] In this way, by using the first identification mark and the second identification mark, it becomes easier for people to visually distinguish and recognize the first building material symbol and the second building material symbol included in the construction floor plan.

[0014] In this case, even if the first and second building material symbols included in the construction plan are written at a recognizable distance, the first identification mark representing the first building material symbol and the second identification mark representing the second building material symbol may overlap, which may result in the possibility of overlooking either the first or second building material symbol included in the construction plan.

[0015] According to this aspect, if the distance between the first display position of the first identification mark and the second display position of the second identification mark is within a predetermined value, a warning display indicating that the first identification mark and the second identification mark are overlapping is superimposed on the construction floor plan and displayed on the terminal device.

[0016] This allows the user to be notified by a warning display that the first identification mark representing the first building material symbol and the second identification mark representing the second building material symbol are overlapping, effectively preventing the user from overlooking the mark.

[0017] Furthermore, when the shapes of building material symbols are very similar or contain the shapes of other building material symbols, the system may mistakenly assign multiple identification marks to one building material symbol included in the construction plan during the building material symbol extraction process. In such cases, since multiple identification marks are displayed close to one building material symbol included in the construction plan, the user may overlook the mark and may not easily notice that there is an error in the number of building material symbols extracted during the extraction process.

[0018] According to this aspect, if the distance between the first display position of the first identification mark and the second display position of the second identification mark is within a predetermined value, a warning display indicating that the first identification mark and the second identification mark are overlapping is superimposed on the construction floor plan and displayed on the terminal device.

[0019] As a result, when a first identification mark and a second identification mark are attached to one building material symbol, and multiple identification marks overlap, a warning display is used to notify the user that multiple identification marks are overlapping, thereby effectively preventing the user from overlooking the mark.

[0020] As a result, the time required for picking out building material symbols can be significantly reduced while minimizing the occurrence of oversights in the process of picking out building material symbols.

[0021] In other words, a support information providing method (Technology 1) according to one aspect of the present disclosure is a support information providing method in a construction site support system that is connected to a terminal device via a network and stores a construction floor plan including a first building material symbol and a second building material symbol, wherein the support information providing method recognizes the first building material symbol included in the construction floor plan, and causes the terminal device to display a first identification mark representing the recognized first building material symbol superimposed on the construction floor plan, recognizes the second building material symbol included in the construction floor plan, and causes the terminal device to display a second identification mark representing the recognized second building material symbol superimposed on the construction floor plan, and when a distance between a first display position of the first identification mark and a second display position of the second identification mark is within a predetermined value, causes the terminal device to display a warning mark indicating that the first identification mark and the second identification mark are overlapping, superimposed on the construction floor plan.

[0022] This support information providing method presents a warning to the user when multiple identification symbols are superimposed on one another when picking out building material symbols included in a construction floor plan, thereby enabling the user to significantly reduce the time required for picking out building material symbols while minimizing the occurrence of overlooking symbols.

[0023] Technology 2 is the support information providing method of technology 1, in which the first building material symbol and the second building material symbol indicate an automatic fire alarm.

[0024] In this support information providing method, when a building material symbol included in a construction plan indicates an automatic fire alarm, and multiple identification symbols are displayed superimposed when picking out the building material symbol, a warning message is displayed to the user. This allows the user to significantly reduce the time required to pick out the building material symbol while minimizing the occurrence of overlooking the building material symbol indicating the automatic fire alarm.

[0025] Technique 3 is the support information providing method of technique 1 or 2, in which the first building material symbol and the second building material symbol indicate wiring devices.

[0026] In this support information providing method, when a building material symbol included in a construction plan indicates a wiring device, and multiple identification symbols are displayed superimposed when picking out the building material symbol, a warning message is displayed to the user. This allows the user to significantly reduce the time required to pick out the building material symbol while minimizing the occurrence of overlooking the building material symbol indicating the wiring device.

[0027] Technique 4 is a support information provision method according to any one of techniques 1 to 3, in which, when the first identification display and the second identification display are superimposed, it is determined whether the distance between the first display position of the first identification display and the second display position of the second identification display is within the specified value.

[0028] In this support information providing method, when an identification mark is displayed in an overlapping manner, a determination is made as to whether the distance between the identification mark and another identification mark is equal to or less than a predetermined value, and therefore, the support information providing method can detect the overlapping of an identification mark based on the approach distance of the identification mark.

[0029] Technique 5 is the support information providing method according to any one of techniques 1 to 4, wherein the warning display is further superimposed on a display area where the first identification display and the second identification display are superimposed.

[0030] In this method of providing support information, a warning display is superimposed on the area where the identification display is superimposed, thereby allowing the user to easily identify the area where the identification display is superimposed.

[0031] A construction site support system (Technology 6) according to one aspect of the present disclosure is a construction site support system that is connected to a terminal device via a network and stores a construction floor plan that includes a first building material symbol and a second building material symbol, and recognizes the first building material symbol included in the construction floor plan, and displays a first identification symbol representing the recognized first building material symbol on the terminal device by superimposing it on the construction floor plan, recognizes the second building material symbol included in the construction floor plan, and displays a second identification symbol representing the recognized second building material symbol on the terminal device by superimposing it on the construction floor plan, and if the distance between a first display position of the first identification symbol and a second display position of the second identification symbol is within a predetermined value, displays a warning symbol indicating that the first identification symbol and the second identification symbol are overlapping on the construction floor plan by superimposing it on the terminal device.

[0032] This construction site support system displays a warning to the user when multiple identification symbols are superimposed on one another when picking out building material symbols included in a construction plan. This allows the user to significantly reduce the time required to pick out building material symbols while minimizing the risk of overlooking a symbol.

[0033] A terminal device (Technology 7) according to one aspect of the present disclosure is a terminal device in the construction site support system of Technology 6, which acquires display information regarding the first identification display, the second identification display, and the warning display from the construction site support system, and displays the warning display on a display if the distance between the first display position of the first identification display and the second display position of the second identification display is within a predetermined value.

[0034] When picking out building material symbols included in a construction plan, such a terminal device displays a warning message on the display of the terminal device if multiple identification symbols are superimposed on each other. This allows the user to check the terminal device and significantly reduce the time required to pick out building material symbols while minimizing the occurrence of overlooking symbols.

[0035] (Embodiments) Hereinafter, embodiments of a support information providing method, a construction site support system, and a terminal device according to the present disclosure will be described in detail with reference to the drawings. Note that each of the embodiments described below represents a preferred specific example of the present disclosure. The numerical values, components, component placement and connection configurations, steps, step order, etc. shown in the following embodiments are merely examples and are not intended to limit the present disclosure. Furthermore, among the components in the following embodiments, components not recited in independent claims will be described as optional components constituting a preferred embodiment.

[0036] It should be noted that the drawings are schematic diagrams and are not necessarily strict illustrations. In addition, in the drawings, substantially the same components are denoted by the same reference numerals, and overlapping descriptions may be omitted or simplified.

[0037] [Configuration] First, a description will be given of the configuration of a construction site support system 10 according to an embodiment. Fig. 1 is a block diagram showing the functional configuration of a construction site support system 10 according to an embodiment.

[0038] The construction site support system 10 is a system that extracts the number and position of building material symbols for each building material symbol based on the design drawings of a building and information indicating the type of building material symbol included in the design drawings. Furthermore, the construction site support system 10 is a system that presents a warning display to the user when multiple identification symbols are displayed superimposed when extracting building material symbols included in a construction floor plan. Here, the design drawings of a building are construction floor plans created, for example, using a CAD (Computer Aided Design) system. Extracting design drawings involves recording the types and quantities of components required for construction included in the design drawings. The construction site support system 10 includes a terminal device 20 and a server 30.

[0039] The terminal device 20 is, for example, an information terminal device such as a smartphone, tablet terminal, or personal computer used by a user. The user of the terminal device 20 is, for example, a building contractor. The user can use the terminal device 20 to check the type, position, and number of building material symbols included in the design drawings of the building. Specifically, the terminal device 20 includes a communication unit 21, an information processing unit 22, a memory unit 23, an operation reception unit 24, and a display unit 25.

[0040] The communication unit 21 is a communication circuit (i.e., a communication module) that enables the terminal device 20 to communicate with the server 30 via the public network 50. The communication performed by the communication unit 21 is, for example, wireless communication. There are no particular limitations on the communication standard of the communication performed by the communication unit 21.

[0041] The information processing unit 22 performs information processing and the like to present the building material symbol extraction results to the user. The information processing unit 22 is realized, for example, by a microcomputer, but may also be realized by a processor. The functions of the information processing unit 22 are realized, for example, by the microcomputer or processor constituting the information processing unit 22 executing a computer program stored in the storage unit 23. Specifically, the information processing unit 22 includes an acquisition unit 221 and a control unit 222.

[0042] The acquisition unit 221 acquires the results of picking out building material symbols included in the design drawings picked up by the server 30, etc.

[0043] The control unit 222 executes information processing and the like for presenting the results of picking out the building material symbols acquired by the acquisition unit 221 to the user.

[0044] The storage unit 23 is a storage device that stores various data and computer programs executed by the information processing unit 22. The computer programs stored in the storage unit 23 include a dedicated application program for presenting the building material symbol extraction results to the user. The storage unit 23 is realized, for example, by a semiconductor memory.

[0045] The operation reception unit 24 receives user operations and is realized by, for example, a mouse, a keyboard, or a touch panel.

[0046] The display unit 25 is a display that displays images and is realized by a display panel such as a liquid crystal panel or an organic EL (Electro Luminescence) panel.

[0047] The server 30 is a device that performs information processing to extract the positions and numbers of building material symbols included in the design drawings of a building, and is realized by, for example, a computer. Specifically, the server 30 includes a communication unit 31, an information processing unit 32, and a storage unit 33.

[0048] The communication unit 31 is a communication circuit (i.e., a communication module) that enables the server 30 to communicate with the terminal device 20 via the public network 50. The communication performed by the communication unit 31 is, for example, wireless communication. There are no particular limitations on the communication standard of the communication performed by the communication unit 31.

[0049] The information processing unit 32 performs information processing for picking out building material symbols included in design drawings and for displaying a warning display indicating that a marker attached to a building material symbol is superimposed. The information processing unit 32 is realized, for example, by a microcomputer, but may also be realized by a processor. The functions of the information processing unit 32 are realized, for example, by the microcomputer or processor constituting the information processing unit 32 executing a computer program stored in the storage unit 33. The information processing unit 32 specifically includes an acquisition unit 321, a detection unit 322, an superimposition determination unit 323, and an output unit 324.

[0050] The acquisition unit 321 acquires the drawing information 41, page number information, and the like from the terminal device 20.

[0051] The detection unit 322 extracts building material symbols included in the design drawings based on the drawing information 41 .

[0052] The superimposition determination unit 323 executes information processing to determine whether or not the marker attached to the building material symbol is superimposed, based on the result of the building material symbol extraction executed by the detection unit 322.

[0053] The output unit 324 transmits the results of picking out the building material symbols obtained by the detection unit 322 and the superimposition determination unit 323 to the terminal device 20 .

[0054] The storage unit 33 is a storage device that stores the drawing information 41 acquired by the acquisition unit 321, the picking result information of the building material symbol picking executed by the detection unit 322, the computer program executed by the information processing unit 32, etc. The storage unit 33 may also store building material symbol information 43. The computer programs stored in the storage unit 33 include a dedicated application program that causes the information processing unit 32 to present the positions and numbers of building material symbols included in the design drawing. The storage unit 33 is realized, for example, by a semiconductor memory.

[0055] The drawing information 41 is information used in the construction of a building. The drawing information 41 includes design drawings and legend symbol information.

[0056] A design drawing is a floor plan used in the construction of a building. Design drawings are created, for example, using a CAD system. FIG. 2 is a schematic diagram of a design drawing 41a according to an embodiment. As shown in FIG. 2, the design drawing 41a is a floor plan showing the floor plan of a building, the types of building material symbols 60 in the building, and the locations of construction equipment corresponding to the building material symbols 60. Locations where the same building material symbol 60 is drawn indicate that the same construction equipment will be placed. In FIG. 2, building material symbols 60a to 60f are building material symbols indicating automatic fire alarms. Note that a design drawing has multiple pages, and FIG. 2 shows one page of the design drawing. In a design drawing, for example, one floor of a building is illustrated on one page. In other words, multiple pages show the floor plan of each floor of the building and the location of construction equipment.

[0057] Legend symbol information is information indicating the type of building material symbol 60 included in the design drawing. FIG. 3 is a diagram showing legend symbol information 41b in the design drawing according to the embodiment. As shown in FIG. 3, legend symbol information 41b is a list of the types of building material symbols 60 included in the design drawing shown in FIG. 2. In FIG. 3, building material symbols 60a to 60f are building material symbols indicating automatic fire alarms. For example, building material symbol 60c, which has a square with the letter "S" inside and a rectangle with its width in the longitudinal direction adjacent to the upper side of the square and "Ex" written in the lower right corner, is a building material symbol representing the wiring device for an automatic fire alarm with a "photoelectric spot-type detector, type 3, non-accumulating head" and a "quick-connect detector base with confirmation light (without connector)." Therefore, in the design drawing 41a, the location where building material symbol 60c is drawn indicates that a set of automatic fire alarms, which are ``photoelectric spot type detector, three-type head, non-accumulation type,'' and wiring equipment for an automatic fire alarm, which is ``quick-connect detector base with confirmation light (no connector),'' will be installed.

[0058] In addition, the legend symbol information 41b may include some types of building material symbols 60 included in the design drawings, or may include types of building material symbols 60 that are not included in the design drawings.

[0059] The picking result information is information indicating the picking results of the number and positions of building material symbols 60 included in the design drawings by the server 30. The picking result information includes marker position information and marker shape information. The picking result information is detected by the detection unit 322 and then stored in the memory unit 33. Fig. 4 is a diagram showing picking result information 42 in the construction site support system 10 according to the embodiment. (a) of Fig. 4 is a diagram showing marker position information in the construction site support system 10 according to the embodiment. (b) of Fig. 4 is a diagram showing marker shape information in the construction site support system 10 according to the embodiment.

[0060] As shown in (a) of FIG. 4, the marker position information is information in which a "marker number," a "drawing number," and the coordinates of the marker are associated with the marker attached to the extracted building material symbol. The "marker number" is a number assigned to each marker. Each marker is assigned a unique number. The "drawing number" is the page number of the design drawing containing the marker. Generally, the same floor plan is drawn on the same page of a design drawing. In other words, in this case, markers with the same "drawing number" are markers attached to building material symbols on the same floor. "x," "y," "w," and "h" are information indicating the coordinates of the marker. "x" is the x-coordinate of the center point of the marker on the design drawing, "y" is the y-coordinate of the center point of the marker on the design drawing, "w" is the width of the marker's circumscribing rectangle in the x-axis direction, and "h" is the width of the marker's circumscribing rectangle in the y-axis direction. Note that the way in which the marker coordinates are expressed is merely an example and is not limited here. For example, a marker with a "marker number" of "1" is included in the design drawing of the page with a "page number" of "002," and the coordinates of the center point of the marker are "(80, 66)," and the size is "10" wide and "10" high.

[0061] As shown in (b) of FIG. 4, the marker shape information is information in which a "marker number" and a "marker shape" are associated with a marker attached to the picked-up building material symbol 60. The "marker shape" indicates the shape of the marker corresponding to the picked-up building material symbol 60. For example, the "marker shape" of a marker with a "marker number" of "1" is "□". If the "marker shapes" of multiple markers are the same, this indicates that the construction site support system 10 has picked out the building material symbols 60 as being the same.

[0062] The construction site support system 10 performs picking of building material symbols 60 based on the drawing information 41 and outputs picking result information 42. FIG. 5 is a diagram showing picking legend symbol information 70 in the construction site support system 10 according to an embodiment. As shown in FIG. 5, the picking legend symbol information 70 is information indicating the shape of the marker 61 associated with each building material symbol 60 included in the legend symbol information 41b. In other words, the picking legend symbol information 70 indicates the correspondence between the building material symbols 60 and the shapes of the markers 61. For example, the "marker shape" of the marker 61a associated with the building material symbol 60a indicating "Do not handle" is a "pentagon." Furthermore, for example, the "marker shape" of the marker 61c associated with the building material symbol 60c indicating the automatic fire alarm "Photoelectric spot type detector, type 3, non-accumulating head" and the automatic fire alarm wiring device "Quick-connect detector base with check light (without connector)" is a "star-shaped octagon."

[0063] 6 is a schematic diagram of a pick-out design drawing 71 in the construction site support system 10 according to the embodiment. As shown in FIG. 6, the pick-out design drawing 71 is a drawing showing how the building material symbols 60a to 60f included in the design drawing 41a have been picked out by the construction site support system 10 and markers 61a to 61f corresponding to the building material symbols 60a to 60f have been added.

[0064] The building material symbol information 43 is information that includes information that associates the building material symbols 60 with the prices of the construction equipment indicated by the building material symbols 60. At this time, by referring to the building material symbol information 43 and adding it up with the types and numbers of building material symbols 60 indicated by the picking result information 42, the user can calculate the total cost of purchasing the construction equipment indicated by the building material symbols 60 included in the building. The building material symbol information 43 may also include information that associates the building material symbols 60 with the product numbers of the construction equipment indicated by the building material symbols 60. At this time, by referring to the building material symbol information 43, detailed information indicating the characteristics and performance of the construction equipment indicated by the building material symbol 60 is presented.

[0065] [Operation] Next, a description will be given of the operation of the construction site support system 10 according to this embodiment. The construction site support system 10 is a system that extracts building material symbols included in design drawings and presents a warning message to the user when multiple identification symbols are displayed superimposed on each other.

[0066] The operation of such a construction site support system 10 will be described. FIG. 7 is a sequence diagram showing the operation of the construction site support system 10 according to the embodiment. FIG. 8 is a flowchart showing the operation of the construction site support system 10 according to the embodiment, that is, a flowchart corresponding to the sequence diagram of FIG. 7. (a) of FIG. 8 is a flowchart showing the operation of the terminal device 20 in the construction site support system 10 according to the embodiment, that is, the operation of the terminal device 20 in the sequence diagram of FIG. 7. (b) of FIG. 8 is a flowchart showing the operation of the server 30 in the construction site support system 10 according to the embodiment, that is, the operation of the server 30 in the sequence diagram of FIG. 7. Note that in FIGS. 7, 8(a) and 8(b), similar steps are given the same reference numerals, and redundant explanations will not be given.

[0067] First, the acquisition unit 221 of the terminal device 20 acquires the user's building material symbol pick-up command accepted by the operation acceptance unit 24 (S101). Next, the control unit 222 of the terminal device 20 transmits the acquired building material symbol pick-up command to the server 30 via the communication unit 21, the public network 50, and the communication unit 31 (S102).

[0068] The building material symbol picking command is a command for executing picking up of building material symbols 60 included in design drawings of a building. The building material symbol picking command includes drawing information 41. Note that the server 30 may store the design drawings in advance in the storage unit 33, and in this case, the building material symbol picking command does not need to include the design drawings.

[0069] Next, the detection unit 322 of the server 30 executes picking up of the building material symbol 60 based on the acquired building material symbol picking up command (S103). The detection unit 322 determines the shapes of markers 61a to 61f corresponding to the building material symbols 60a to 60f as shown in Fig. 5 based on the design drawing shown in Fig. 2 and the legend symbol information shown in Fig. 3, and attaches a marker 61 of a shape corresponding to the building material symbol 60 included in the design drawing as shown in Fig. 6. The picking up result is stored in the storage unit 33 as picking up result information 42.

[0070] Next, the overlap determination unit 323 of the server 30 performs an overlap determination to check whether any markers 61 are displayed overlapping based on the marker position information shown in FIG. 4A (S104). The overlap determination unit 323 determines that the markers 61 overlap when the degree of overlap between any two markers 61 is equal to or greater than a threshold. The overlap degree of the markers 61 may be calculated based on the distance between the markers or the area of ​​the overlapping markers. The overlap determination unit 323 calculates the degree of overlap between one marker 61 and all other markers 61 that have the same "page number" and determines whether the degree of overlap is equal to or greater than a threshold. Note that the overlap determination unit 323 may also calculate the degree of overlap for a pair of markers 61 where the distance between the pair of markers 61 is equal to or less than a predetermined value.

[0071] The overlap determination unit 323 calculates the degree of overlap based on the distance between a pair of markers 61 (first marker 611 and second marker 612), for example. The distance between the first marker 611 and the second marker 612 is calculated by calculating the distance between the coordinates of the center of the first marker 611 (i.e., coordinates ("x" + "w" / 2, "y" + "h" / 2)) and the coordinates of the center of the second marker 612. The overlap determination unit 323 determines, for example, whether the calculated distance between the coordinates of the center of the first marker 611 and the coordinates of the center of the second marker 612 is equal to the distance from the center to a vertex of the circumscribed rectangle of the first marker 611 (i.e., ("w") ２ + "h" ２ ) １／２ / 2), it is determined that the degree of overlap between the first marker 611 and the second marker 612 is equal to or greater than the threshold value.

[0072] Here, the distance between a pair of markers 61 may be calculated by calculating the distance between the coordinates of the upper left vertex of the circumscribing rectangle of the first marker 611 (i.e., coordinates ('x', 'y')) and the coordinates of the upper left vertex of the circumscribing rectangle of the second marker 612.

[0073] Furthermore, the overlap determination may be performed based on, for example, IoU (Intersection over Union). IoU is an index for evaluating the degree of overlap between two regions. The value of IoU is found by calculating IoU = (area of ​​common part) / (total area) = {(area of ​​common part) / (area of ​​first marker 611) + (area of ​​second marker 612) - (area of ​​common part)}. For example, when the value of IoU is greater than 0.5, the overlap determination unit 323 determines that the degree of overlap between the first marker 611 and the second marker 612 is equal to or greater than a threshold. Here, (area of ​​first marker 611) is the area of ​​the circumscribing rectangle of first marker 611, (area of ​​second marker 612) is the area of ​​the circumscribing rectangle of second marker 612, and (area of ​​common part) is the area of ​​the part where the circumscribing rectangle of first marker 611 and the circumscribing rectangle of second marker 612 overlap.

[0074] Now, a specific example of a situation in which the markers 61 overlap will be described. For example, when the detection unit 322 picks out the building material symbols 60 in step S103, multiple markers 61 may be attached to one building material symbol 60. For example, if the shapes of the building material symbols 60 are very similar or contain the shapes of other building material symbols 60, the construction site support system 10 may mistakenly attach multiple markers 61 to one building material symbol 60 included in the design drawing 41a during the picking out operation of the building material symbols 60, resulting in an error in the number of building material symbols 60 obtained in the picking out operation.

[0075] 9 is a diagram showing examples of building material symbols in the operation of the construction site support system 10 according to this embodiment. Fig. 9 shows examples of building material symbols in which multiple markers may be erroneously attached to one building material symbol during the picking-up operation of the construction site support system 10 in step S103.

[0076] For example, the building material symbol 601 shown in (a1) of Fig. 9 partially includes the overall shape of the building material symbol 602 shown in (a2) of Fig. 9. Therefore, when the detection unit 322 executes picking up of the building material symbol 60 in step S103, two types of markers may be attached to the building material symbol 601: a marker corresponding to the building material symbol 601 and a marker corresponding to the building material symbol 602. Also, for example, the building material symbol 603 shown in (b1) of Fig. 9 partially includes the overall shape of the building material symbol 604 shown in (b2) of Fig. 9. Therefore, when the detection unit 322 executes picking up of the building material symbol 60 in step S103, two types of markers may be attached to the building material symbol 603: a marker corresponding to the building material symbol 603 and a marker corresponding to the building material symbol 604. When two types of markers 61 are attached to one building material symbol 60 in this way, the overlap determination unit 323 determines that the degree of overlap of these markers 61 is equal to or greater than a threshold value.

[0077] When the overlay determination unit 323 executes the overlay determination, the output unit 324 transmits the picking result and the overlay determination result to the terminal device 20 via the communication unit 31, the public network 50, and the communication unit 21 (S105). The picking result includes position information and shape information of the markers 61. The overlay determination result includes information indicating the coordinates of the markers 61 whose degree of overlap is determined to be equal to or greater than a threshold.

[0078] When the acquisition unit 221 of the terminal device 20 acquires the picking result and the superimposition determination result, the control unit 222 superimposes the marker 61 and the warning display on the design drawing 41a based on the acquired picking result and the superimposition determination result (S106).

[0079] 10 is a diagram showing a situation in which a warning display 62 is displayed during the operation of the construction site support system 10 according to this embodiment. As shown in FIG. 10 , when a first marker 611 and a second marker 612 are displayed superimposed on the display unit 25, the control unit 222 further superimposes and displays the warning display 62. Here, the display position and size of the warning display 62 are not particularly limited. The first marker 611 and the second marker 612 are specific examples of the marker 61.

[0080] FIG. 11 is a diagram showing an example of a screen display during operation of the construction site support system 10 according to this embodiment. As shown in FIG. 11 , the display unit 25 displays pick-up legend symbol information 70 and a pick-up design drawing 71 together. At this time, if any of the markers 61 included in the pick-up design drawing 71 has an overlapping degree equal to or greater than a threshold, a warning display 62 is further superimposed. In the center portion of the pick-up design drawing 71 in FIG. 11 , the warning display 62 is further superimposed on a portion where the markers 61d and 61e are superimposed on one building material symbol 60e. In addition, in the right portion of the pick-up design drawing 71 in FIG. 11 , the warning display 62 is further superimposed on a portion where two markers 61c are superimposed on one building material symbol 60c.

[0081] Next, the acquisition unit 221 of the terminal device 20 acquires a change instruction from the user via the operation acceptance unit 24 (S107). The change instruction is, for example, an instruction to temporarily move the marker 61 so that the user can confirm whether the marker 61 is attached to the correct corresponding building material symbol 60. The change instruction may also be, for example, an instruction to delete or change the marker 61 when the user confirms that the marker 61 is attached to an incorrect building material symbol 60. The content of the change instruction is not particularly limited here, as long as it is an instruction that requires a change to the picking result information 42.

[0082] When the acquisition unit 221 acquires the change instruction from the user, the control unit 222 transmits change instruction information to the server 30 via the communication unit 21, the public network 50, and the communication unit 31 (S108). The change instruction information includes the position information and shape information of the marker 61 after the change by the user.

[0083] When the acquisition unit 321 of the server 30 acquires the change instruction information, the superimposition determination unit 323 updates the picking-out result information 42 based on the acquired change instruction information (S109). The superimposition determination unit 323 performs superimposition determination based on the updated picking-out result information 42 (S110). When the superimposition determination unit 323 performs superimposition determination, the output unit 324 transmits the picking-out result and the superimposition determination result to the terminal device 20 via the communication unit 31, the public network 50, and the communication unit 21 (S111). When the acquisition unit 221 of the terminal device 20 acquires the picking-out result and the superimposition determination result, the control unit 222 superimposes the marker 61 and the warning display on the design drawing 41a based on the acquired picking-out result and the superimposition determination result (S112).

[0084] Thereafter, the procedure of steps S107 to S112 is repeated until the acquisition unit 221 no longer acquires a change instruction from the user via the operation acceptance unit 24 (No in step S107 in FIG. 8A). For example, the user repeats the above procedure until the warning display 62 is no longer displayed on the display unit 25.

[0085] According to the above-described operation, when picking out a building material symbol 60 included in the design drawing 41a, if multiple markers 61 are displayed superimposed on one building material symbol 60 because multiple markers 61 have been attached to one building material symbol 60 or because two building material symbols 60 are close to each other, the construction site support system 10 presents a warning display 62 to the user. This allows the user to significantly reduce the time required for picking out the building material symbols 60 while minimizing the occurrence of overlooking a symbol in the work of picking out the building material symbols 60.

[0086] (Other Embodiments) While the support information providing method, construction site support system, and terminal device according to one or more aspects have been described above based on the embodiments, the present disclosure is not limited to these embodiments. As long as they do not deviate from the spirit of the present disclosure, various modifications conceivable by a person skilled in the art to the present embodiments, and forms constructed by combining components of different embodiments, may also be included within the scope of one or more aspects.

[0087] The present disclosure is applicable to a construction site support system, in particular to a construction site support system that supports the extraction of building material symbols from design drawings.

[0088] 10 Construction site support system 20 Terminal device 21 Communication unit 22 Information processing unit 221 Acquisition unit 222 Control unit 23 Memory unit 24 Operation reception unit 25 Display unit 30 Server 31 Communication unit 32 Information processing unit 321 Acquisition unit 322 Detection unit 323 Overlap determination unit 324 Output unit 33 Memory unit 41 Drawing information 41a Design drawing 41b Legend symbol information 42 Pick-up result information 43 Building material symbol information 50 Public network 60, 60a to 60f, 601 to 604 Building material symbol 61, 61a to 60f Marker (identification display) 611 First marker (first identification display) 612 Second marker (second identification display) 62 Warning display 70 Pick-up legend symbol information 71 Extraction design drawings

Claims

1. A support information providing method in a construction site support system that is connected to a terminal device via a network and stores a construction floor plan including a first building material symbol and a second building material symbol, the support information providing method comprising: recognizing the first building material symbol included in the construction floor plan; displaying a first identification mark representing the recognized first building material symbol on the terminal device, superimposing the first identification mark on the construction floor plan; recognizing the second building material symbol included in the construction floor plan; displaying a second identification mark representing the recognized second building material symbol on the terminal device, superimposing the second identification mark on the construction floor plan; and, if the distance between a first display position of the first identification mark and a second display position of the second identification mark is within a predetermined value, displaying a warning mark indicating that the first identification mark and the second identification mark overlap on the construction floor plan, superimposing the warning mark on the terminal device.

2. The support information providing method according to claim 1, wherein the first building material symbol and the second building material symbol indicate an automatic fire alarm.

3. The support information providing method according to claim 1, wherein the first building material symbol and the second building material symbol indicate wiring devices.

4. A support information providing method as described in claim 1, wherein when the first identification display and the second identification display are superimposed, it is determined whether the distance between the first display position of the first identification display and the second display position of the second identification display is within the specified value.

5. The support information providing method according to claim 1, wherein the warning display is further superimposed on a display area where the first identification display and the second identification display are superimposed.

6. A construction site support system that is connected to a terminal device via a network and stores a construction floor plan including a first building material symbol and a second building material symbol, the construction site support system recognizing the first building material symbol included in the construction floor plan, and displaying a first identification mark representing the recognized first building material symbol on the terminal device, superimposing the first identification mark on the construction floor plan, recognizing the second building material symbol included in the construction floor plan, and displaying a second identification mark representing the recognized second building material symbol on the terminal device, and, if the distance between a first display position of the first identification mark and a second display position of the second identification mark is within a predetermined value, superimposing a warning mark on the construction floor plan to indicate that the first identification mark and the second identification mark are overlapping.

7. A terminal device in a construction site support system as described in claim 6, which acquires display information regarding the first identification mark, the second identification mark, and the warning mark from the construction site support system, and displays the warning mark on a display when the distance between the first display position of the first identification mark and the second display position of the second identification mark is within a predetermined value.

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