Method for labor saving in concrete work

Abstract

To provide a labor-saving method of concrete construction capable of labor-saving in concrete construction by importing data handwritten at a concrete construction site, which is currently generally done, using an OCR function and application of a mobile device such as a smartphone, and the like, which field workers can easily use, and linking the same with a construction vehicle operation management system.SOLUTION: Character data including characters handwritten on a paper medium or board at a construction site is read using an OCR application installed on a communication terminal of a construction worker and is stored on a data management server. The data is linked with construction vehicle operation data that is obtained by a construction vehicle operation management system that uses GNSS position information to manage concrete construction.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a method for labor saving in concrete construction. More specifically, it enables the management of concrete construction by linking the operation data of construction vehicles obtained from a construction vehicle operation management system using position information by GNSS with character data including handwritten input read by an OCR app at the concrete construction site.

Background Art

[0002] Concrete placement is an important process for creating a high-quality concrete structure. While constantly checking the situation at the placement location and the operation status of the fresh concrete truck so that the fresh concrete can be placed smoothly, maximum safety and quality control are required.

[0003] For example, Patent Document 1 discloses an inventory and placement management system for fresh concrete in which both the fresh concrete plant and the construction site can share the situation regarding the shipment, delivery, and placement of fresh concrete in real time. It is composed of a host computer equipped with a database and a plurality of communication devices that transmit data to the database and check the contents of the database. The database stores: (1) Specifications of fresh concrete (2) Start time of fresh concrete mixing (3) Shipment order of the fresh concrete truck loaded with fresh concrete from the fresh concrete plant (4) Fresh concrete delivery time at the construction site (5) Fresh concrete placement completion time at the construction site (6) Elapsed time since the start time of fresh concrete mixing (7) Current number of trucks used for fresh concrete placement and number of trucks transporting fresh concrete (8) Cumulative volume of fresh concrete delivered at the construction site There is disclosed an inventory and placement management system for fresh concrete having these.

[0004] In addition, Patent Document 2 discloses a ready-mixed concrete delivery and placement management system that can accurately and efficiently perform the delivery management and placement management of ready-mixed concrete at a construction site. The system includes a scanning device that scans the delivery slip of ready-mixed concrete owned by the construction site, and a communication device that transmits the image data scanned by the scanning device to a host computer. The transmitted image data is converted into characters by the OCR software of the host computer, and information data with predetermined information is created in the host computer. A ready-mixed concrete delivery and placement management system is disclosed.

[0005] In addition, Non-Patent Document 1 discloses a ready-mixed concrete truck operation management system that uses position information by GPS. The system includes a data management server in a cloud environment, a position information transmission application installed on a smartphone carried by the driver of the ready-mixed concrete truck, and an operation management web application provided on various terminals used by site supervisors, site workers, and other related parties. An operation management system that links these is disclosed.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Non-Patent Documents

[0007]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0008] The construction vehicle operation management system that utilizes GNSS position information has a great advantage in that it can transmit and receive the position data of construction vehicles to be managed in real time, and all construction-related personnel can share the data through a data management server.

[0009] However, in actual concrete construction, even if it is possible to grasp in real time the departure time of the raw concrete in a construction vehicle or the arrival time at the construction site, from the perspective of concrete quality control, rather than that, it is important to manage the concrete mixing time with raw concrete and the actual concrete placement time at the construction site.

[0010] Also, from the perspective of concrete quality control, in addition to the concrete mixing data with raw concrete, data related to fresh concrete on-site tests are also important.

[0011] Conventionally, for this type of quality control, management using paper media such as the "Delivery Invoice for Ready-Mixed Concrete" specified in JIS, for example, has been carried out.

[0012] Regarding these data management operations using paper media, although automation and digitization using various devices have been progressing, since it costs a large amount of money for system introduction and training of system operators, etc., the number of contractors who can introduce a new system is limited.

[0013] As a result, currently, in most concrete construction, for example, handwriting on the above-mentioned paper media and handwriting on a blackboard or whiteboard for fresh concrete on-site tests are carried out, and it is necessary to transfer these data.

[0014] The present invention aims to solve the above-mentioned problems, and enables on-site workers to easily use and process handwritten data at a general concrete construction site. It reads the data using the OCR function or application of a mobile terminal such as a smartphone, and provides a labor-saving method for concrete construction that can be linked to a construction vehicle operation management system.

Means for Solving the Problems

[0015] The labor-saving method for concrete construction of the present invention includes a data management server that accumulates operation data of construction vehicles used in concrete construction, a position information transmission application installed on a communication terminal carried by a driver of the construction vehicle that transmits the position information of the construction vehicle to the data management server, and an operation management web application installed on a communication terminal of a person related to the concrete construction that checks the operation data accumulated in the data management server. A plurality of geofences using position information by GNSS are set at intervals on the route where the construction vehicle moves. Each time the construction vehicle passes through the geofence, the entry and exit times of the construction vehicle to and from the geofence are transmitted to and accumulated in the data management server. It is a labor-saving method for concrete construction using a construction vehicle operation management system configured as such. Character data related to the operation of the construction vehicle including handwritten characters on paper media or boards at the concrete construction site or the concrete placed at the construction site is read by an OCR application installed on the communication terminal of the person related to the construction and accumulated in the data management server, and the management of concrete construction is carried out in cooperation with the operation data of the construction vehicle obtained by the construction vehicle operation management system.

[0016] In the above configuration, the configuration of the construction vehicle operation management system part is basically the same as the operation management system described in Non-Patent Document 1 mentioned in the background art section. By incorporating the concept of geofencing, various situations such as the arrival and departure of construction vehicles and the status of each construction vehicle on the route during the journey can be displayed in real time on communication terminals such as PCs, tablets, and smartphones, and shared among construction-related personnel.

[0017] Examples of the paper medium mentioned here include the "Ready-Mixed Concrete Delivery Note" specified in JIS A 5308, but it is not particularly limited, and various paper media used in paper form at the concrete placement site are targeted.

[0018] In addition, examples of the board mentioned here include the blackboard and whiteboard for concrete construction that have been conventionally used in concrete construction, and this is also not particularly limited.

Advantages of the Invention

[0019] The labor-saving method for concrete construction of the present invention utilizes the OCR function and applications of mobile terminals such as widely popular smartphones, so it does not require a large amount of equipment investment, and even on-site workers who are not used to operating the terminal can easily master it.

[0020] By linking with the construction vehicle operation management system using position information by GNSS, the operations required by on-site workers are only simple operations on the mobile terminal. Therefore, including drivers of construction vehicles, etc., no special training is required, and the system can be easily introduced regardless of the scale of the contractor.

[0021] Since the operation of construction vehicles and the quality of concrete can be managed in a unified manner in real time, a significant labor-saving in concrete construction is possible.

Brief Description of the Drawings

[0022]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0023] Hereinafter, specific embodiments of the method for labor saving in concrete construction of the present invention will be described with reference to the accompanying drawings. Needless to say, the present invention is not limited to these embodiments.

[0024] Figure 6 is a system outline diagram of an example of the construction vehicle operation management system used in the method for labor saving in concrete construction of the present invention, and the basic configuration is the same as the operation management system described in Non-Patent Document 1 mentioned in the background art section. Further, Figure 7 shows an example of the arrangement of geofences used in this construction vehicle operation management system as a conceptual diagram.

[0025] In the figure, reference numeral 1 denotes a host computer into which a data management server that accumulates data such as operation information of a construction vehicle 2 (hereinafter referred to as a "ready-mix truck") is incorporated; reference numeral 3 denotes a communication terminal that transmits the position information of the ready-mix truck 2 to the host computer 1, and a position information transmission application of the ready-mix truck 2 is installed therein. Further, reference numeral 4 denotes a communication terminal that checks data such as the operation information of the ready-mix truck 2 accumulated in the host computer 1, and an operation management web application of the ready-mix truck 2 is installed therein.

[0026] Smartphones, tablets, etc. are used as the communication terminal 3, and are carried by the workers of the ready-mix plant and the driver of the ready-mix truck 2, respectively. In addition to smartphones and tablets, personal computers, etc. are used as the communication terminal 4, and are carried by the on-site supervisors and related personnel at the construction site, the civil engineering management headquarters of the head office and branch offices, and other construction-related personnel such as orderers and design offices.

[0027] As shown in FIG. 7, on the map displayed on the screens of the communication terminal 3 and the communication terminal 4, a geop fence A that surrounds the location of the ready-mix plant a and a certain area including the location of the ready-mix plant a, and a geop fence B that surrounds the location of the construction site b and a certain area including the location of the construction site b are respectively set.

[0028] In addition, on the road on which the ready-mix truck 2 moves between the location of the ready-mix plant a and the location of the construction site b, for example, at an intersection c or a traffic jam prediction location d, geop fences C and D that surround these locations and a certain area (area) including these locations are respectively set.

[0029] The geop fences A, B, C, and D are set to an optimal shape such as a circular shape or a rectangular shape according to the shape of the intricate roads and the like in the set area of each geop fence. Further, the geop fence B is set on a road that does not exist on the map.

[0030] In such a configuration, every time the ready-mix truck 2 passes through the geo-fences A, B, C, and D, the arrival times at each of the geo-fences A, B, C, and D and the departure times from the geo-fences A, B, C, and D are automatically registered in the communication terminal 3 carried by the driver of the ready-mix truck 2. The registered data is transmitted to the host computer 1 and automatically stored in the data management server of the host computer 1.

[0031] Also, on the maps displayed on the screens of the communication terminal 3 and the communication terminal 4, the vehicle position etc. of each ready-mix truck 2 as information representing the operation status of the ready-mix truck 2 is displayed in real time. Further, as information representing the placement status of the ready-mixed concrete, necessary items such as the planned placement quantity, the actual placement record, and the remaining quantity of the ready-mixed concrete are displayed in real time.

[0032] The information representing these placement statuses is input by the person in charge of the ready-mix plant, the driver of the ready-mix truck 2, etc. using their own carried communication terminal 3, and is automatically or displayed on the screens of the communication terminal 3 and the communication terminal 4 by button operation.

[0033] And these information can be confirmed in real time by the workers of the ready-mix plant, the drivers of the ready-mix trucks 2, the on-site supervisors and related personnel at the construction site, the civil engineering management headquarters of the head office and branch offices, and other construction-related personnel such as the orderers and design offices, using their own carried communication terminals 3 and communication terminals 4.

[0034] Thereby, by grasping the passing times of the geo-fences A, B, C, and D of the ready-mix truck 2 moving between the ready-mix plant and the construction site, the operation status such as the operation speed and the expected arrival and departure times in each geo-fence setting section can be grasped in real time and shared among the construction-related personnel. Also, since the stay time of the ready-mix truck 2 at the setting locations of each geo-fence can be confirmed, traffic congestion locations, arrival times, etc. can be predicted in real time.

[0035] For example, since the passing times of the ready-mix truck 2 passing through each of the geofences A, B, C, and D can be confirmed, the running interval (calculate the running interval time from the time difference of the passing of the leading ready-mix truck 2, calculate the running speed from the running interval time and the section distances between each of the geofences A, B, C, and D, and calculate the running interval distance between the leading ready-mix truck 2 and the trailing ready-mix truck 2.) can be calculated, and thus platoon operation can be prevented.

[0036] Next, an example of an embodiment regarding on-site work using an OCR app at a construction site in cooperation with the operation data of a construction vehicle obtained by a construction vehicle operation management system will be described.

[0037] [Embodiment 1] 1. Ready-mix delivery note

[0038] 1.1 Current situation Regarding ready-mix concrete as ready-mix, the standards regarding the concrete mixed in the ready-mix plant until it is shipped and delivered to the unloading point are defined in JIS A 5308.

[0039] Figure 1 shows the "Ready-mix Concrete Delivery Voucher" (hereinafter referred to as the "delivery voucher") shown in JIS A 5308:2019. Although the description content is defined, the formats of the delivery vouchers vary among ready-mix plants.

[0040] Also, currently, there is a movement towards digitizing the delivery voucher, but it is predicted that for the time being, the operation will continue on paper media.

[0041] 1.2 Problems Figure 2 shows a simplified example of a delivery voucher used on-site. As described above, the description content of the delivery voucher is defined by JIS. The arrival time of the delivery voucher at the site (9:45 in this example) is handwritten by the driver when the ready-mix truck arrives at the site.

[0042] When reading character data including this handwritten character using OCR, for example, there are a method of using an invoice OCR system such as a cloud service, and a method of using a part of the camera function of a terminal (for example, a smartphone).

[0043] When using a cloud service, it is difficult to obtain real-time data and a time lag occurs. On the other hand, if it can be completed only with the functions of the terminal, data can be obtained in real time, so information sharing becomes smooth and it is also advantageous in terms of cost.

[0044] Since the operation management system shown in FIGS. 6 and 7 described above uses the GNSS geopositioning function, the departure time of the ready-mix plant based on the position data of the construction vehicle is different (later) from the time of kneading concrete at the ready-mix plant, that is, the substantial departure time from the perspective of concrete management.

[0045] Also, the arrival time of the construction vehicle in the operation management system using the GNSS geopositioning function is different (earlier) from the arrival time at the placement point at the site.

[0046] Also, the arrival time on the delivery note is often written by the driver of the construction vehicle, but it is often difficult for the person in charge at the site to actually check the contents described on the delivery note due to personnel arrangement and other reasons.

[0047] 1.3 Solution 〔System overview〕 FIG. 3 shows an overview of the on-site system in the first embodiment of the present invention. The site, which is the delivery destination, receives a paper delivery note issued at the ready-mix plant on the day of ready-mix placement, and at that time, reads the character information of the described contents using an OCR function such as a smartphone. From this read information, the time (printed) when the ready-mix truck departs from the plant and the on-site arrival time handwritten by the driver at the time of on-site arrival are read as numerical information.

[0048] Record this together with the time obtained by the GNSS operation management system to manage the departure time from the precast factory and the arrival time at the site. In addition, the character information other than the time described in the delivery slip can also be used for quality control.

[0049] 〔Merits〕 Enumerate the merits obtained by this system as follows. (1) Since it is possible to obtain a time (the time required for quality control) that is more accurate than the time information obtained by GPS, it is desirable for quality control. (2) Real-time data acquisition is possible by reading using the OCR function equipped in the terminal without using form OCR software. (3) Processing such as two-dimensional barcodes on the slip is unnecessary. (4) It can cope with templates (formats) of different slips.

[0050] Note that since handwritten characters are read, it is considered that the OCR reading accuracy is affected by the writing style of the characters. As a solution, it is considered to print a guide display of the characters at the handwritten position of the characters, and reduce the variation and improve the accuracy by tracing.

[0051] 〔Embodiment 2〕 2. Blackboard for concrete acceptance inspection

[0052] 2.1 Current situation For the purpose of quality control of concrete, at the time of concrete placement on site, a fresh concrete on-site test (hereinafter referred to as acceptance inspection) is carried out by an inspector of a third-party organization at the frequency and items specified in the design drawings, etc. The results of the inspection are recorded each time by writing a memo and on a dedicated blackboard as shown in the photo of Fig. 4 with chalk or with a magic marker on a whiteboard, and a recording photo is taken. After that, the memo of the inspection content is transcribed into a predetermined format.

[0053] 2.2 Problems After the inspection, it is handwritten and transcribed into the placement report, etc., and then returned to the office and digitized, so real-time information sharing is not carried out.

[0054] 2.3 Solutions 〔System overview〕 During the acceptance inspection, the content written on the blackboard can be read by the OCR of the smartphone, and the read content can be used in cooperation with the operation management system and the quality management system. Figure 5 shows the overview of this on-site system.

[0055] By setting the reading position, arrangement, etc. by the OCR app, the necessary numerical data, etc. among the content written on the blackboard are sent to the cloud server, and the sent data is recorded in a predetermined format as quality management information.

[0056] 〔Merits〕 Conventionally, the data on the blackboard that was transcribed was immediately sent to the management server using the camera, OCR function, and app of the on-site worker's smartphone, and by linking it with the construction vehicle operation management system, real-time data sharing among relevant parties becomes possible.

Explanation of symbols

[0057] 1…Host computer 2…Raw material vehicle (construction vehicle) 3…Communication terminal 4…Communication terminal A, B, C, D…Geofences a…Raw material plant b…Construction site c…Intersection d…Traffic jam prediction location

Claims

1. A data management server that accumulates operation data of construction vehicles used in concrete construction, a position information transmission app installed on a communication terminal carried by a driver of the construction vehicle that transmits the position information of the construction vehicle to the data management server, and an operation management web app installed on a communication terminal of a person related to the concrete construction that checks the operation data stored in the data management server. A plurality of geofences using GNSS position information are set at intervals on the route where the construction vehicle moves. Each time the construction vehicle passes through the geofence, a method for labor saving in concrete construction using a construction vehicle operation management system configured to transmit and accumulate the entry and exit times of the construction vehicle to the geofence to the data management server. The method for labor saving in concrete construction includes reading character data related to the operation of the construction vehicle including the factory departure time and the arrival time at the site of the construction vehicle handwritten on a paper medium or a board at the construction site of the concrete construction or the concrete placed at the construction site with an OCR app installed on the communication terminal of the person related to the construction and accumulating it in the data management server, linking it with the operation data of the construction vehicle obtained by the construction vehicle operation management system, obtaining time information more accurate than the time information based on the position data of the construction vehicle, and managing the concrete construction.

2. In the method for labor saving in concrete construction according to Claim 1, the communication terminals carried by the driver of the construction vehicle and the persons related to the construction at the construction site are PCs, tablets or smartphones. A method for labor saving in concrete construction.

3. In the method for labor saving in concrete construction according to Claim 1 or 2, the paper medium is a ready-mix concrete delivery note, and the character data read by the OCR app includes the departure time of the raw concrete factory equipped with ready-mix concrete and the arrival time at the concrete placement site of the construction site handwritten. A method for labor saving in concrete construction, characterized by linking the character data with the operation data of the construction vehicle obtained by the construction vehicle operation management system.

4. In the method for labor saving in concrete construction according to claim 1 or 2, the board is a blackboard or a whiteboard for concrete construction, and the character data read by the OCR application includes handwritten characters related to the mixture of fresh concrete or the results of on-site tests of fresh concrete, and the character data is linked with the operation data of the construction vehicle obtained by the construction vehicle operation management system. A method for labor saving in concrete construction, characterized by the above.

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