JP2023151804A - Work equipment management system, work equipment management method, and work equipment management program - Google Patents

Abstract

To provide a work equipment management system, a work equipment management method, and a work equipment management program that improve accuracy when specifying the number of a floor where work equipment is arranged on the basis of atmospheric pressure.SOLUTION: A work equipment management system performs, when pressure of a predetermined floor, which is a detected value of a pressure sensor arranged on the predetermined floor, is obtained, second processing of calculating a relationship value between height of a point where a predetermined floor pressure is obtained and a second related value, which is a value related to the predetermined floor pressure, as actual standard height for the predetermined floor, third processing of calculating, on the basis of comparison between theoretical standard height and the actual standard height at the predetermined floor, corrected standard height, and fourth processing of determining, on the basis of equipment atmospheric pressure and the corrected standard height, the number of a floor where each of a plurality of work equipment is located.SELECTED DRAWING: Figure 14

Description

The present invention relates to a work equipment management system, a work equipment management method, and a work equipment management program.

At construction sites, work vehicles such as transport vehicles for transporting materials, aerial work vehicles, and various other work equipment are used. These work equipment may be shared by multiple workers. Therefore, various management methods have been proposed to make it easier to share such work equipment (see, for example, Patent Documents 1 to 4).

JP2019-175224A JP 2019-179357 Publication Patent No. 6474948 Patent No. 6960798

One possible method for identifying the floor on which work equipment is located at a construction site of a building with a hierarchical structure is to use atmospheric pressure detected by an air pressure sensor provided on the work equipment. In this case, for example, the floor where the work equipment is located can be identified by comparing the air pressure detected by the air pressure sensor on the reference floor with the air pressure detected by the air pressure sensor installed on the work equipment. It is possible to do so. However, since weather conditions change from moment to moment, with this method, there is a possibility that the floor where the work equipment is located may be incorrectly identified.

Therefore, the present application aims to improve the accuracy when specifying the floor number on which work equipment is arranged based on atmospheric pressure.

In order to solve the above problems, the present invention uses a standard altitude that is a height per unit atmospheric pressure.

Specifically, the present invention is a work equipment management system for managing a plurality of work equipment used in work in a building having a hierarchical structure, the system comprising: Identify the floor number on which each of the plurality of work equipment is located based on the equipment atmospheric pressure, which is the detected value of the sensor, and the reference atmospheric pressure, which is the detected value of the atmospheric pressure sensor installed at a predetermined location in the building. The processing unit calculates for each floor a first related value, which is a value related to the theoretical atmospheric pressure of each floor of the building based on a general formula expressing the relationship between atmospheric pressure and altitude, and then calculates the first related value for each floor and a predetermined location A first process of calculating the relationship value between the actual height difference between the actual height and the first related value as a theoretical standard altitude for each floor, and When the predetermined floor pressure, which is the detected value of the barometric pressure sensor placed on the floor, is obtained, the relationship value between the height of the point where the predetermined floor pressure is obtained and the second related value, which is a value related to the predetermined floor pressure, is determined as the actual standard altitude. a second process that calculates for a predetermined floor; a third process that calculates a corrected standard altitude based on a comparison between the theoretical standard altitude and the actual standard altitude on the predetermined floor; and a fourth process of determining the floor number on which each of the work equipment is located.

According to the above, the theoretical standard altitude is specified using a general formula expressing the relationship between atmospheric pressure and altitude, and the floor number is determined from the corrected standard altitude, which is corrected based on the actual atmospheric pressure. It is possible to determine the rank based on a calculation process that is not biased toward either the value or the actual measured value. Therefore, for example, compared to determining the floor number based only on actual measured values, it becomes possible to specify the floor number on which the work equipment is arranged with higher accuracy.

In addition, in the first process, the processing unit calculates the theoretical pressure difference for each floor by subtracting the reference pressure from the theoretical pressure on each floor of the building based on the general formula expressing the relationship between atmospheric pressure and altitude, and then calculates the theoretical pressure difference for each floor. The difference between the actual height and the predetermined location is divided by the theoretical pressure difference for each floor, which is calculated as the theoretical standard altitude, which is the height per unit atmospheric pressure.In the second process, the predetermined floor pressure is obtained. Then, after calculating the actual pressure difference by subtracting the reference pressure from the predetermined floor pressure, the height of the point where the predetermined floor pressure is obtained is divided by the actual pressure difference, and the value is calculated as the actual standard altitude, which is the height per unit pressure. In the third process, the difference between the theoretical standard altitude and the actual standard altitude on the prescribed floor is calculated as an offset value, and then a corrected standard altitude is calculated by correcting the theoretical standard altitude with the offset value. Good too. According to this, a general formula expressing the relationship between atmospheric pressure and altitude is used to specify the theoretical standard altitude, which is the height per unit atmospheric pressure, and this is calculated by the number of floors from the corrected standard altitude, which is corrected based on the actual atmospheric pressure. Therefore, it is possible to determine the rank based on a calculation process that is not biased toward either the theoretical value or the actually measured value. Therefore, for example, compared to determining the floor number based only on actual measured values, it becomes possible to specify the floor number on which the work equipment is arranged with higher accuracy.

In addition, in the fourth process, the processing unit calculates the difference between the equipment air pressure and the reference air pressure by multiplying the difference value by the corrected standard altitude or the actual standard altitude at the predetermined floor. It is also possible to temporarily determine the floor on which each of the floors is located. According to this, it is possible to simplify the calculation required to specify the floor number where the work equipment is arranged.

In addition, in the fourth process, the processing unit calculates each of the plurality of work equipment from the altitude calculated by multiplying the difference value obtained by subtracting the reference air pressure from the equipment air pressure by the corrected standard altitude on the provisionally determined floor. It is also possible to perform the actual determination of the floor on which the floor is located. According to this, it is possible to specify the floor number where the work equipment is arranged with higher accuracy.

Further, the predetermined location may be a floor near the ground of a building. According to this, it is possible to specify the number of floors on which work equipment is arranged even in the initial stage of construction of a building.

Further, the work equipment may be an aerial work vehicle equipped with an elevated work platform that can be raised and lowered, and the equipment atmospheric pressure may be a detected value of an air pressure sensor provided on the elevated work platform. According to this, it becomes possible to grasp the position and operating status of the aerial work vehicle.

Moreover, the present invention can also be understood from the aspect of a method and a program. For example, the present invention provides a work equipment management method for managing a plurality of work equipment used in work in a building having a hierarchical structure, in which a pressure sensor installed in each of the plurality of work equipment is used. A processing unit that identifies the number of floors on which each of the plurality of work equipment is arranged based on a detected value of equipment atmospheric pressure and a reference atmospheric pressure that is a detected value of an atmospheric pressure sensor installed at a predetermined location in the building. After calculating the first related value for each floor, which is a value related to the theoretical atmospheric pressure on each floor of the building based on the general formula expressing the relationship between atmospheric pressure and altitude, the actual height between each floor and a predetermined location is calculated. A first process of calculating the relationship value between the difference and the first related value for each floor as a theoretical standard altitude, and a barometric pressure sensor placed on a predetermined floor whose height is known and which is different from the floor of the predetermined location. When the predetermined floor pressure, which is the detected value of a third process of calculating a corrected standard altitude based on a comparison between the theoretical standard altitude and the actual standard altitude on a predetermined floor; and a third process of calculating a corrected standard altitude based on the equipment pressure and the corrected standard altitude. A fourth process of determining the floor number of the location may be performed.

According to the disclosed technology, it is possible to improve accuracy when specifying the floor number on which work equipment is arranged based on atmospheric pressure.

FIG. 1 is a diagram illustrating the overall configuration of a work equipment management system according to an embodiment. FIG. 2 is a diagram showing an example of the hardware configuration of the server. FIG. 3 is a diagram illustrating an example of the hardware configuration of a tablet terminal. FIG. 4 is a diagram showing an example of the hardware configuration of the work vehicle sensor device. FIG. 5 is a diagram showing an example of the hardware configuration of the reference sensor device. FIG. 6 is a diagram illustrating an example of processing blocks of the server. FIG. 7 is a diagram showing an example of a management table stored in the management database. FIG. 8 is a diagram showing an example of a work vehicle management table stored in the management database. FIG. 9 is a diagram showing an example of a usage status management table stored in the management database. FIG. 10 is a diagram showing an example of a usage reception screen output by the usage reception unit. FIG. 11 is a diagram showing an example of a usage status confirmation screen output by the output unit. FIG. 12 is a diagram illustrating an example of the processing flow of the reference sensor device. FIG. 13 is a diagram illustrating an example of a processing flow of the work vehicle sensor device. FIG. 14 is a diagram showing a flowchart of a process for identifying the position of a work vehicle. FIG. 15 is an example of a table showing standard altitudes (theoretical values). FIG. 16 is an example of a table showing standard altitudes (correction values). FIG. 17 is an example of a processing flow of construction processing of a work vehicle management table by the server.

<Embodiment>
Embodiments will be described below with reference to the drawings. The configuration of the embodiment shown below is an example, and the disclosed technology is not limited to the configuration of the embodiment. FIG. 1 is a diagram illustrating the overall configuration of a work equipment management system according to an embodiment. The work equipment management system 100 is a work vehicle 1 ("work equipment" in the present application) used in the construction work of a 19-story building 4 (an example of a "building with a hierarchical structure" in the present application). This is an example of a system for managing The work equipment management system 100 includes a work vehicle 1, a reference sensor device 13, a server 2, and a tablet terminal 3.

The work vehicle 1 is a vehicle used at a construction site. The work vehicle 1 is, for example, an elevated work vehicle having an elevated work platform 11 on which a worker is placed. The high place workbench 11 can be raised and lowered according to the height of the work object. The work vehicle sensor device 12 is provided on the elevated work platform 11. The work vehicle sensor device 12 includes, for example, various sensors that detect the operating status of the work vehicle 1 and the position of the work vehicle 1, and transmits detection values detected by the sensors to the server 2 via the first wireless link N1.

The reference sensor device 13 is a sensor device installed on the first floor of the building 4 (which is an example of a "predetermined location" in the present application). The reference sensor device 13 includes an atmospheric pressure sensor that measures the atmospheric pressure on the floor where it is installed, and transmits the detected value by the atmospheric pressure sensor to the server 2 via the first wireless link N1. Note that if the reference sensor device 13 is installed in a private room or the like with a certain degree of airtightness, the measured value may be affected, so it is preferable to install it in a well-ventilated place where outside air naturally circulates. Further, the reference sensor device 13 is not limited to being installed on the first floor of the building 4, but may be installed anywhere on the second floor or higher. However, since the work equipment management system 100 is used during the construction of the building 4, it is better to install the reference sensor device 13 on a floor near the ground level of the building 4 since the building 4 exists only in the lower part. This is preferable because the work equipment management system 100 can be used even at the initial stage of construction.

Server 2 is an information processing device. The server 2 receives sensor detection values acquired by the work vehicle sensor devices 12 provided in each of the work vehicles 1 via the first wireless link N1 and stores them. Further, the server 2 receives usage registration for the work vehicle 1 from the tablet terminal 3 via the second wireless link N2, and stores usage information indicating the accepted usage registration. The server 2 provides work vehicle information based on the stored sensor detection values and usage information to the tablet terminal 3 so that it can be viewed via the second wireless link N2.

The tablet terminal 3 is a portable information processing device used by a worker at a construction site. The tablet terminal 3 displays the work vehicle information provided from the server 2 on the display via the second wireless link N2. Furthermore, the tablet terminal 3 transmits usage registration for the work vehicle 1 to the server 2 in response to an operation from the worker.

(Hardware configuration of server 2)
FIG. 2 is a diagram showing an example of the hardware configuration of the server 2. As shown in FIG. The server 2 includes a central processing unit (CPU) 201, a main storage section 202, an auxiliary storage section 203, a first communication section 204, and a second communication section 205. The CPU 201, main storage section 202, auxiliary storage section 203, first communication section 204, and second communication section 205 are interconnected by a connection bus.

The CPU 201 is also called a microprocessor unit (MPU) or a processor. The CPU 201 is not limited to a single processor, and may have a multiprocessor configuration. Furthermore, a single CPU 201 connected through a single socket may have a multi-core configuration. In the server 2, the CPU 201 loads the program stored in the auxiliary storage unit 203 into the work area of the main storage unit 202, and controls peripheral devices through execution of the program. This allows the server 2 to execute processing that meets a predetermined purpose.

The main storage unit 202 is exemplified as a storage unit directly accessed by the CPU 101. The main storage unit 202 includes Random Access Memory (RAM) and Read Only Memory (ROM).

The auxiliary storage unit 203 stores various programs and various data on a recording medium in a readable and writable manner. The auxiliary storage unit 203 is also called an external storage device. The auxiliary storage unit 203 stores an operating system (OS), various programs,
Various tables etc. are stored. External devices include, for example, other information processing devices and external storage devices connected via a computer network or the like. Note that the auxiliary storage unit 203 may be, for example, part of a cloud system that is a group of computers on a network.

The auxiliary storage unit 203 is, for example, an erasable programmable ROM (EPROM), a solid state drive (SSD), a hard disk drive (HDD), or the like. Further, the auxiliary storage unit 203 is, for example, a Compact Disc (CD) drive device, a Digital Versatile Disc (DVD) drive device, a Blu-ray (registered trademark) Disc (BD) drive device, or the like. Further, the auxiliary storage unit 203 may be provided by Network Attached Storage (NAS) or Storage Area Network (SAN).

The first communication unit 204 is an interface with the LTE network. The first communication unit 204 communicates with the aerial work platform 11 via the first wireless link N1 realized by the LTE network.

The second communication unit 205 is an interface with a wireless local area network (LAN). The second communication unit 205 communicates with the tablet terminal 3 via a second wireless link N2 realized by a wireless LAN.

The server 2 may further include, for example, an input unit that receives operation instructions from a user or the like. Examples of such an input unit include input devices such as a keyboard, pointing device, touch panel, and voice input device.

The server 2 may include, for example, an output unit that outputs data processed by the CPU 201 and data stored in the main storage unit 202. As such an output unit, a cathode ray tube (CRT) display, a liquid crystal
Examples of output devices include a display (LCD), a plasma display panel (PDP), an electroluminescence (EL) panel, an organic EL panel, and a printer.

(Hardware configuration of tablet terminal 3)
FIG. 3 is a diagram showing an example of the hardware configuration of the tablet terminal 3. As shown in FIG. The tablet terminal 3 includes a CPU 301, a main storage section 302, an auxiliary storage section 303, a second communication section 304, a display 305, a touch panel 302, and a camera 307. The same components as the server 2 are given the same reference numerals, and their explanations will be omitted. In the tablet terminal 3, a display 305, a touch panel 302, and a camera 307 are also connected via a connection bus.

The display 305 displays data processed by the CPU 301 and data stored in the main storage unit 302. The display 305 is, for example, a Liquid Crystal Display (LCD), a Plasma Display Panel (PDP), an Electroluminescence (EL) panel, or an organic EL panel.

Touch panel 302 is arranged to overlap display 305 . The touch panel 302 detects a touch by a finger and acquires the coordinate value of the touch position. The touch panel 302 notifies the CPU 301 of the acquired coordinate values and time information of the touch position. The tablet terminal 3 can provide an intuitive operation to the worker by disposing the touch panel 302 on the display 305.

The camera 307 is a digital camera having a charge coupled device (CCD) image sensor or a complementary metal-oxide-semiconductor (CMOS) image sensor. The camera 307 can take still images and moving images.

(Hardware configuration of work vehicle sensor device 12)
FIG. 4 is a diagram showing an example of the hardware configuration of the work vehicle sensor device 12. The work vehicle sensor device 12 includes a microcomputer 1201 , an atmospheric pressure sensor 1202 , an acceleration sensor 1203 , a battery 1204 , a switch 1205 , and a first communication unit 1205 .

Microcomputer 1201 is a microcomputer. The microcomputer 1201 is, for example, a combination of a processor and a storage unit. The microcomputer 1201 may be, for example, a microcontroller unit (MCU), a system-on-a-chip (SoC), a system large scale integration (LSI), a chipset, or the like. Note that the microcomputer 1201 includes a storage unit. For example, the vehicle name indicating the work vehicle 1 is stored in the storage unit of the microcomputer 1201.

The atmospheric pressure sensor 1202 is a sensor that detects atmospheric pressure. The atmospheric pressure sensor 1202 is, for example, a semiconductor piezoresistive atmospheric pressure sensor. The atmospheric pressure sensor 1202 detects the atmospheric pressure at the location where the work vehicle sensor device 12 is installed.

Acceleration sensor 1203 is a sensor that detects acceleration. Acceleration sensor 1203 detects acceleration of work vehicle sensor device 12. Since the acceleration sensor 1203 is installed on the high-place work platform 11 of the work vehicle 1, even if the work vehicle 1 is not moving, if the high-place work platform 11 is going up or down, the acceleration sensor 1203 will be installed on the high-place work platform 11. Detect the acceleration of

The microcomputer 1201 associates the detected value indicating the atmospheric pressure by the atmospheric pressure sensor 1202 and the detected value indicating the acceleration by the acceleration sensor 1203 with the vehicle name of the work vehicle 1, and sends the detected value to the server 2 via the first communication unit 1205 at a predetermined interval (for example, , every 60 minutes). If the work vehicle 1 is provided with a communication device, the microcomputer 1201 may transmit the detected value to the server 2 via the communication device of the work vehicle. In this case, the first communication unit 1205 can be omitted.

Note that the microcomputer 1201 does not need to transmit the detected value of the acceleration sensor 1203 if it is less than a preset threshold. The work vehicle sensor device 12 may be set, for example, to generate an interrupt when a detected value indicating acceleration by the acceleration sensor 1203 is equal to or greater than a threshold value. Then, when an interrupt occurs, the microcomputer 1201 associates the detected value indicating the atmospheric pressure by the barometric pressure sensor 1202 and the detected value indicating the acceleration by the acceleration sensor 1203 with the vehicle name of the work vehicle 1, and sends them to the server 2. It's okay. Furthermore, if no interrupt has occurred, the microcomputer 1201 associates the detected value indicating the atmospheric pressure by the atmospheric pressure sensor 1202 with the vehicle name of the work vehicle 1 and transmits it to the server 2 via the first communication unit 1205. It's okay.

Furthermore, the microcomputer 1201 may detect the remaining amount of the battery 1204 and transmit the detected remaining amount to the server 2 together with the detected value of the atmospheric pressure sensor 1202 and the detected value of the acceleration sensor 1203. The work vehicle sensor device 12 achieves lower power consumption of the work vehicle 1, that is, longer life of the battery 1204, by transmitting signals at relatively long intervals of 60 minutes. Note that the transmission interval of the work vehicle sensor device 12 is not limited to 60 minutes, and the battery 120 is
The transmission interval may be set to 30 minutes, 90 minutes, etc. so that the remaining amount is 4.

The battery 1204 supplies power to the microcomputer 1201, the atmospheric pressure sensor 1202, the acceleration sensor 1203, and the first communication unit 1205. The battery 1204 is, for example, a dry battery. If the work vehicle sensor device 12 can be powered from the battery of the work vehicle 1, the battery 1204 may be omitted or may have a small capacity.

The switch 1205 is, for example, a push-type switch. When the switch 1205 is pressed, the microcomputer 1201 sends the detected value indicating the atmospheric pressure by the barometric pressure sensor 1202 and the detected value indicating the acceleration by the acceleration sensor 1203 to the work vehicle, even if 60 minutes have not passed since the previous detected value was sent. 1 is associated with the vehicle name, and transmitted to the server 2 via the first communication unit 1205.

(Hardware configuration of reference sensor device 13)
FIG. 5 is a diagram showing an example of the hardware configuration of the reference sensor device 13. The reference sensor device 13 includes a microcomputer 1301, an atmospheric pressure sensor 1302, and a first communication unit 1303. Since the reference sensor device 13 receives power from an outlet installed in the building 4, for example, unlike the work vehicle sensor device 12, a battery is omitted.

The atmospheric pressure sensor 1302 detects the atmospheric pressure at the location where the reference sensor device 13 is installed. The microcomputer 1301 transmits the detected value indicating the atmospheric pressure by the atmospheric pressure sensor 1302 to the server 2 via the first communication unit 1205 at predetermined intervals (for example, every 60 minutes).

(Processing block of server 2)
FIG. 6 is a diagram showing an example of processing blocks of the server 2. As shown in FIG. The server 2 includes a calculation section 21 , a position acquisition section 22 , an operating status acquisition section 23 , a usage reception section 24 , an output section 25 , and a management database 26 . The server 2 has a calculation unit 21 and a position acquisition unit 22 (which is an example of a “processing unit” in the present application) of the server 2 by having the CPU 201 execute a computer program that is executable in the main storage unit 202. ), the operating status acquisition unit 23, the usage reception unit 24, the output unit 25, the management database 26, and other units.

The calculation unit 21 calculates the atmospheric pressure (theoretical value) corresponding to each floor of the building 4. The calculation unit 21 stores the calculated atmospheric pressure (theoretical value) in the management database 26.

The management database 26 is a database that manages various information such as the number of floors and height of the building 4, atmospheric pressure, and usage status of the high-altitude work platform 11. FIG. 7 is a diagram showing an example of a management table stored in the management database 26. The management table 261 includes various items such as "number of floors," "floor height," and "elevation." “Number of Floors” stores information indicating each floor of the building 4. “Floor height” stores information indicating the pre-measured (or designed) floor height (ground height) of each floor of the building 4. "Floor height" stores a value obtained by adding the floor height to the elevation (above sea level) of the land on which the building 4 is built, that is, information indicating the elevation (above sea level) of the floor of each floor of the building 4. The unit of "floor height" and "altitude" is "m (meter)". These pieces of information stored in the management database 26 are received by the server 2 through a registration operation on the tablet terminal 3, for example, and are stored in the management database 26.

FIG. 8 is a diagram showing an example of the work vehicle management table 262 stored in the management database 26. The work vehicle management table 262 includes the following items: "vehicle name", "position", "operating status", "remaining capacity", and "update date and time". The "vehicle name" field stores the name given to the work vehicle 1. “Position” stores information indicating the location where the work vehicle 1 exists. For example, when the work vehicle 1 is on the third floor of the building 4, "3rd floor" is stored in the "position". Information indicating the operating status of the work vehicle 1 is stored in the "operating status" field. The information indicating the operating status is, for example, "in operation" or "stopped." “Remaining capacity” stores information indicating the remaining capacity of the battery 1204 of the work vehicle sensor device 12 mounted on the work vehicle 1. Information indicating the remaining capacity of the battery 1204 may include, for example, 100 percent (%).

FIG. 9 is a diagram showing an example of the usage status management table 263 stored in the management database 26. The usage status management table 263 includes the following items: "ID", "vehicle name", "company name", "individual name", and "comment". “ID” stores an ID that identifies the usage status of each work vehicle 1. The name of the work vehicle 1 is stored in “vehicle name”. “Company name” stores the name of the company to which the worker who uses the work vehicle 1 belongs. The name of the worker who uses the work vehicle 1 is stored in the "individual name" field. "Comment" stores comments such as information regarding the work vehicle 1 and information regarding construction work. For example, if a coordination meeting is held between contractors or workers to decide who will use which work vehicle 1, such as the day before the usage date, comments based on the decision may be registered. good. For example, by registering a comment such as "I would like to use the vehicle from ○○ day" in "Comments", the work vehicle 1 can be allocated in consideration of the comment at the coordination meeting.

The position acquisition unit 22 acquires the position of the work vehicle 1 based on the atmospheric pressure detected by the work vehicle sensor device 12. The position acquisition unit 22 receives a detection value indicating the atmospheric pressure detected by the atmospheric pressure sensor 1202 from the work vehicle sensor device 12. Then, the position acquisition unit 22 performs various calculation processes to be described later, and identifies the floor number on which the work vehicle 1 is placed. Then, the position acquisition unit 22 stores the number of floors where the work vehicle 1 exists in the work vehicle management table 262 in association with the vehicle name of the work vehicle 1.

The operation status acquisition unit 23 acquires the operation status of the work vehicle 1 based on the acceleration detected by the work vehicle sensor device 12. The operating status acquisition unit 23 receives a detection value indicating the acceleration detected by the acceleration sensor 1203 from the work vehicle sensor device 12. The operating status acquisition unit 23 determines that the work vehicle 1 is operating when the received detection value indicating acceleration is equal to or greater than a threshold value. Further, the operating status acquisition unit 23 determines that the work vehicle 1 is not operating when the received detection value indicating the acceleration is less than the threshold value. The operating status acquisition unit 23 stores the determined operating status in the working vehicle management table 262 in association with the vehicle name of the working vehicle 1.

The usage reception unit 24 receives usage registration that associates the work vehicle 1 with the name of the worker who uses the work vehicle 1. The usage reception unit 24 transmits a usage reception screen to the tablet terminal 3, for example, in response to a request from the tablet terminal 3. FIG. 10 is a diagram showing an example of the usage reception screen 241 output by the usage reception unit 24. The usage reception screen 241 includes a usage vehicle name input field 2411, a user name input field 2412, a user name input field 2413, a comment entry field 2414, and a registration button 2415. The used vehicle name input field 2411 may be, for example, a pull-down menu, and the vehicle name of the work vehicle 1 that is not used may be selectable. For example, information is entered in each of the vehicle name input field 2411, user company name input field 2412, and user name input field 2413 of the usage reception screen 241 displayed on the tablet terminal 3, depending on the worker who uses the work vehicle 1. is input. That is, the vehicle name of the work vehicle 1 used by the worker is input into the use vehicle name input field 2411. In the user company name input field 2412, the name of the company to which the worker belongs is input. In the user name input field 2413, the individual name of the worker is input. In the comment input field 2414, comments such as information regarding the work vehicle 1 and information regarding construction work are input. Then, when the registration button 2415 is pressed with information entered in the vehicle name input field 2411, the user company name input field 2412, the user name input field 2413, and the comment input field 2414, each input Usage information including the information entered in the field is transmitted from the tablet terminal 3 to the server 2 via the second wireless link N2.

When the usage information is received from the tablet terminal 3, the usage reception unit 24 stores the received usage information in the usage status management table 263. That is, the usage reception unit 24 stores the information input in the usage vehicle name input field 2411 of the usage reception screen 241 in the “vehicle name” of the usage status management table 263. The usage reception unit 24 stores the information input in the user company name input field 2412 of the usage reception screen 241 in the “business name” of the usage status management table 263. The usage reception unit 24 stores the information input in the user name input field 2413 of the usage reception screen 241 in the “individual name” of the usage status management table 263. The usage reception unit 24 stores the information input in the comment input field 2414 in “comment” of the usage status management table 263. Through such processing, the usage reception unit 24 stores usage information in the usage status management table 263.

The output unit 25 outputs a usage status confirmation screen that displays the usage status stored in the usage status management table 263. For example, upon receiving a usage status confirmation request from the tablet terminal 3, the output unit 25 generates a usage status confirmation screen based on the information stored in the work vehicle management table 262 and the usage status management table 263. Then, the output unit 25 transmits the generated usage status confirmation screen to the tablet terminal 3.

FIG. 11 is a diagram showing an example of the usage status confirmation screen 251 output by the output unit 25. The usage status confirmation screen 251 includes a building image 2511, a hierarchical image 2512, and a usage status table 2513. The output unit 25 outputs a building image 2511 schematically showing the building 4. In the building image 2511, a layer image 2512 schematically showing each layer of the building 4 is shown. Based on the information stored in the work vehicle management table 262 and the usage status management table 263, the output unit 25 arranges a usage status table 2513 showing the usage status of the work vehicle in the hierarchical image 2512 showing each hierarchy. In the example of the usage status table 2513 shown in FIG. 11, the usage status list is sorted by business name, and the usage status list is further sorted by individual name.

(Processing flow of reference sensor device 13)
FIG. 12 is a diagram showing an example of the processing flow of the reference sensor device 13. An example of the processing flow of the reference sensor device 13 will be described below with reference to FIG. 12.

At T1, initial settings are performed. In the initial settings, for example, calibration of the atmospheric pressure sensor 1302 and registration of the server 2 to which the detected values are transmitted are performed. Details of the calibration will be described later.

At T2, the atmospheric pressure sensor 1302 measures atmospheric pressure. At T3, the microcomputer 1301 transmits the detected value indicating the atmospheric pressure measured by the atmospheric pressure sensor 1302 at T2 to the server 2 via the first communication unit 1205.

At T4, the microcomputer 1301 determines whether 60 minutes have passed since the previous detection value was transmitted. If 60 minutes have elapsed (YES at T4), the process returns to T2, and atmospheric pressure measurement (T2) and detection value transmission (T3) are performed. If 60 minutes have not elapsed (NO at T4), the process at T4 is repeated.

(Processing flow of work vehicle sensor device 12)
FIG. 13 is a diagram showing an example of a processing flow of the work vehicle sensor device 12. An example of the processing flow of the work vehicle sensor device 12 will be described below with reference to FIG. 13.

At T11, initial settings are performed. In the initial settings, for example, the atmospheric pressure sensor 1202 and the acceleration sensor 1203 are calibrated, and the server 2 to which the detected values are sent is registered. Further, a threshold value for generating an interrupt (a threshold value for the detection value of the acceleration sensor 1203) is also set. Details of the calibration will be described later.

At T12, the atmospheric pressure sensor 1202 measures the atmospheric pressure. Further, the acceleration sensor 1203 measures acceleration. If an interrupt occurs, that is, if the detection value indicating the acceleration detected at T12 is equal to or greater than the threshold (YES at T13), the process proceeds to T14. If no interrupt occurs, that is, if the detection value indicating the acceleration detected at T12 is less than the threshold (NO at T13), the process proceeds to T15.

At T14, the microcomputer 1201 transmits the detected value indicating the atmospheric pressure measured by the atmospheric pressure sensor 1202 and the detected value indicating the acceleration measured by the acceleration sensor 1203 at T12 to the server 2 via the first communication unit 1205.

At T15, the detected value indicating the atmospheric pressure measured by the atmospheric pressure sensor 1202 at T12 is transmitted to the server 2 via the first communication unit 1205.

At T16, the microcomputer 1201 determines whether the switch 1205 has been pressed. When pressed (YES at T16), the process returns to T12, and measurement of atmospheric pressure and acceleration (T12) and transmission of detected values (T14, T15) are performed. If the button has not been pressed (NO at T16), the process proceeds to T15.

At T17, the microcomputer 1201 determines whether 60 minutes have passed since the previous detection value was transmitted. If 60 minutes have elapsed (YES at T17), the process returns to T12, and measurement of atmospheric pressure and acceleration (T12) and transmission of detected values (T14, T15) are performed. If 60 minutes have not elapsed (NO at T17), the process returns to T16.

(calibration)
Due to individual differences between the work vehicle sensor device 12 and the reference sensor device 13, the detected values of the respective sensors may differ even when measuring the same atmospheric pressure. The difference in detected values due to such individual differences has a range of, for example, about ±30 Pa. Therefore, if the system is operated with such individual differences ignored, the accuracy in detecting the position of the work vehicle 1 by the server 2 will decrease. Therefore, sensor calibration is performed as at T1 in FIG. 12 and T11 in FIG. 13. In the calibration, the work vehicle sensor device 12 and the reference sensor device 13 are placed on the same floor (same height), and the atmospheric pressure is measured simultaneously for each sensor. Then, the detection values of each sensor are calibrated so that the detection values of each sensor indicate the same atmospheric pressure. Then, each of the work vehicle sensor device 12 and the reference sensor device 13, whose detection values have been calibrated, is placed on a predetermined floor of the building 4.

(Location identification of work vehicle 1)
FIG. 14 is a diagram showing a flowchart of a process for specifying the position of the work vehicle 1. This process is mainly controlled by the position acquisition unit 22. First, an overview of the flowchart shown in FIG. 14 will be explained.

When specifying the position of the work vehicle 1, first, a standard altitude (theoretical value) is calculated (T21). Standard altitude is a value representing the height (altitude difference) per unit atmospheric pressure. The standard altitude (theoretical value) calculated in step T21 is a theoretical standard altitude value that does not take into account the actual atmospheric pressure. Therefore, this step T21 is basically executed at the initial stage when the work equipment management system 100 is applied to the building 4, but it may be executed irregularly after the application starts.

As mentioned above, the standard altitude is a value representing the height (altitude difference) per unit atmospheric pressure. Therefore, basically, if the value obtained by subtracting the atmospheric pressure observed by the work vehicle sensor device 12 from the atmospheric pressure observed by the reference sensor device 13 is multiplied by the standard altitude, the altitude of the work vehicle sensor device 12 in the building 4 can be determined. can be identified. However, the standard altitude (theoretical value) calculated in step T21 is a theoretical standard altitude value that does not take into account the actual atmospheric pressure. Therefore, by performing the following processing, a standard altitude that can be used to specify the altitude of the work vehicle sensor device 12 is calculated.

That is, after the standard altitude (theoretical value) is calculated in step T21, the standard altitude (actual value) is calculated (T22). The standard altitude (actually measured value) is a process of calculating a standard altitude (actually measured value) based on the actual atmospheric pressure obtained from the work vehicle sensor device 12 and the reference sensor device 13. In this step T22, the actual measurement value of the atmospheric pressure obtained from one of the plurality of work vehicle sensor devices 12, which is installed on a predetermined floor different from the reference sensor device 13 and whose altitude is known. Using this and the actual measured value of atmospheric pressure obtained from the work vehicle sensor device 12, the standard altitude (actual measured value) at a predetermined floor is calculated. Since the actual atmospheric pressure keeps changing from moment to moment, the processes from step T22 onwards are repeatedly executed while the work equipment management system 100 is applied to the building 4.

After the standard altitude (actually measured value) is calculated in step T22, a standard altitude offset value is calculated (T23). The standard altitude offset value is the difference between the standard altitude (actual value) at the predetermined floor specified in step T22 and the standard altitude (theoretical value) at the predetermined floor calculated in step T21 as the standard altitude offset value. It is processing.

After the standard altitude offset value is calculated in step T23, a process is performed to calculate the value for each floor by adding the standard altitude offset value to the standard altitude (theoretical value) of each floor as the standard altitude (correction value). (T24). Therefore, basically, if the value obtained by subtracting the atmospheric pressure observed by the work vehicle sensor device 12 from the atmospheric pressure observed by the reference sensor device 13 is multiplied by the standard altitude (correction value), the work vehicle sensor in the building 4 can be The altitude of the device 12 can be determined almost accurately.

After the standard altitude (correction value) is calculated in step T24, the number of floors on which each work vehicle sensor device 12 located in the building 4 is located is determined (T25). To determine the floor number, the altitude is calculated using the actual measured value of atmospheric pressure observed by each work vehicle sensor device 12 and the standard altitude (corrected value) at the predetermined floor calculated in step T24, and each work vehicle sensor device 12 Tentatively identify the number of floors where the building is located. Next, referring to the standard altitude (corrected value) corresponding to the provisionally identified floor number, the altitude is recalculated using the actual measured value of atmospheric pressure observed by the work vehicle sensor device 12 and the standard altitude (corrected value). The number of floors where the work vehicle sensor device 12 is arranged is finally specified.

By repeating the above series of steps T22 to T24, accurate floor number determination can be continued even if the atmospheric pressure changes from moment to moment due to changes in the weather. The details of each of the above-mentioned steps T21 to T24 will be explained below using specific examples.

(Step T21) FIG. 15 is an example of a table showing standard altitudes (theoretical values). The management table 261 also includes information regarding such standard altitude (theoretical value). In this explanation using a specific example, among the plurality of work vehicle sensor devices 12, 16 is used as the work vehicle sensor device 12 that is installed on a predetermined floor different from the reference sensor device 13 and whose altitude is known. Assume that it is installed on the floor. Therefore, in the management table 261 of FIG. 15, the standard altitude (theoretical value) of the 16th floor is displayed in gray.

In the process in step T21, first, a theoretical value of atmospheric pressure corresponding to each floor is calculated. "Atmospheric pressure (theoretical value)" is the theoretical value of the atmospheric pressure corresponding to each floor, and the value calculated using the following formula (1) is stored. Although the unit of atmospheric pressure P in the following mathematical formula (1) is "hPa", the unit of atmospheric pressure in the following explanation will be "Pa". Furthermore, although the unit of z (altitude) in the following formula (1) is "km", the unit of elevation and height in the following explanation is "m".

Next, the air pressure difference from the first floor to each floor is calculated. Then, the standard altitude (theoretical value) of each floor is calculated by dividing the height of each floor (floor height) shown in the management table 261 shown in FIG. 7 by the corresponding pressure difference.
Standard altitude (theoretical value) = floor height / pressure difference

(Step T22) In calculating the standard altitude (actual measurement value), the work vehicle sensor device 12 (hereinafter referred to as a "fixed device") of the work vehicle 1 on the 16th floor whose location has been specified is It does not restrict movement. Also, the "fixed machine" may be fixed to a building instead of the work vehicle 1). Therefore, the height of the fixing device in the building 4 is calculated by adding the height from the floor to the fixing device on the floor (actual measurement value) to the floor height where the fixing device is installed.
Fixing machine height = installation floor height + height from floor to fixing machine

As shown in Figure 7, the floor height of the 16th floor is 74.2 m. Therefore, if the height from the floor to the fixing device is 0.92 m, the height of the fixing device will be 75.12 m.

Furthermore, in calculating the standard altitude (actual measurement value), data from the reference sensor device 13 (hereinafter referred to as "reference device") installed on the first floor is used. Therefore, the height of the reference device in the building 4 is calculated by adding the height (actual measurement) from the floor to the reference device on the floor to the height of the floor where the reference device is installed.
Reference machine height = installation floor floor height + height from floor to reference machine

As shown in FIG. 7, the floor height of the first floor is 0 m. Therefore, if the height from the floor to the fixing machine is 0.65 m, the height of the reference machine will be 0.65 m.

Next, the value of the difference obtained by subtracting the actual measured value of atmospheric pressure observed by the fixed device from the measured value of the atmospheric pressure observed by the reference device, and the value of the difference obtained by subtracting the height of the reference device from the height of the fixed device. By dividing, the standard altitude (actual value) at the 16th floor is calculated.
Standard altitude (actual measurement) = (Fixed machine height - Standard machine height) / (Standard aircraft pressure - Fixed machine pressure)

For example, if the actual measured value of atmospheric pressure observed by a fixed aircraft is 101,093 Pa, and the actual measured value of atmospheric pressure observed by a reference aircraft is 101,988 Pa, the standard altitude (actual value) at the 16th floor is calculated as follows: Calculated.
Standard altitude (actual value) = (75.12-0.65)/(101988-101093
)
=0.083206704 [m/Pa]

(Step T23) The standard altitude offset value is calculated by subtracting the standard altitude (theoretical value) from the standard altitude (actual value) calculated in step T22.
Standard altitude offset value = Standard altitude (actual value) - Standard altitude (theoretical value)

As shown in the management table 261 of FIG. 15, the standard altitude (theoretical value) of the 16th floor is 0.083580743 [m/Pa], so in this specific example, the standard altitude offset value is calculated as follows. be done.
Standard altitude offset value = 0.083206704-0.083580743
=-0.000374039 [m/Pa]

(Step T24) After calculating the standard altitude offset value, the value for each floor is calculated by adding the standard altitude offset value to the standard altitude (theoretical value) of each floor as the standard altitude (correction value). FIG. 16 is an example of a table showing standard altitudes (correction values). The management table 261 also includes information regarding such standard altitudes (correction values).
Standard altitude (corrected value) = Standard altitude (theoretical value) + Standard altitude offset value

(Step T25) After the standard altitude (correction value) has been calculated, first, the actual measured value of atmospheric pressure observed by each work vehicle sensor device 12 and the standard altitude (correction value) at the predetermined floor calculated in step T24 are used. ) to calculate the altitude and provisionally identify the floor number on which each work vehicle sensor device 12 is arranged (temporary calculation). In the following, for example, the work vehicle sensor device 12 located on the third floor will be illustrated.

At the stage of provisionally specifying the floor number (provisional calculation), it is not known that the third floor work vehicle sensor device 12 is located on the third floor. Therefore, provisional identification of which floor the work vehicle sensor device 12 (hereinafter referred to as the target machine) on each floor is located is based on the actual measured value of the atmospheric pressure observed by the reference machine. The value obtained by subtracting the measured value of atmospheric pressure is multiplied by the standard altitude (corrected value) of the floor where the fixed aircraft is located, and then the height of the reference aircraft is added.
Target aircraft height (temporary calculation) = (Reference aircraft pressure - Target aircraft pressure) x Fixed aircraft standard altitude + Reference aircraft height

For example, if a value of 101753 Pa is transmitted as an actual measured value of atmospheric pressure from a certain target aircraft, the height of the target aircraft (temporary calculation) is calculated as follows.
Target machine height (temporary calculation) = (101988-101753) x 0.083206704 + 0.65
=20.20357542 [m]

Therefore, the floor number on which the target aircraft is located can be provisionally identified as the third floor based on the management table 261 shown in FIG.

Next, referring to the standard altitude (corrected value) corresponding to the provisionally identified floor number, the altitude is recalculated using the actual measured value of atmospheric pressure observed by the target aircraft and the standard altitude (corrected value), The floor number where the work vehicle sensor device 12 is placed is finally specified.

At the stage of final identification (recalculation) of the floor number, it has already been tentatively determined that the target aircraft is located on the third floor. Therefore, the final determination of which floor the target aircraft is located is based on the value obtained by subtracting the measured value of the atmospheric pressure observed by the target aircraft from the measured value of the atmospheric pressure observed by the reference aircraft. Multiply by the standard altitude (correction value) of a certain floor, and then add the height of the reference aircraft.
Target aircraft height (recalculation) = (Reference aircraft pressure - Target aircraft pressure) x Target aircraft standard altitude + Reference aircraft height

For example, if a value of 101753 Pa is transmitted from the target aircraft as the actual measured value of atmospheric pressure as described above, the target aircraft height (recalculation) is calculated as follows.
Target machine height (tentative calculation) = (101988-101753) x 0.082965518 + 0.65
=20.1468967 [m]

Therefore, the floor number on which the target aircraft is located can be finally identified as the third floor based on the management table 261 shown in FIG.

As described above, by executing the processes of steps T21 to T24 in the server 2, it becomes possible to determine with high precision the number of floors on which each work vehicle sensor device 12 in the building 4 is arranged. Furthermore, since steps T22 to T24 are repeatedly executed, the standard altitude offset value and standard altitude (correction value) in the management table 261 are constantly updated even if the atmospheric pressure changes from moment to moment. Therefore, according to the above embodiment, even if the atmospheric pressure changes, it is possible to continue to determine the floor number of the work vehicle sensor device 12 with high accuracy, and the work vehicle 1 equipped with the work vehicle sensor device 12 can be arranged. The possibility of erroneously specifying the floor number can be suppressed as much as possible. Note that the frequency with which steps T22 to T24 are repeatedly executed depends on how quickly the weather conditions change, but for example, every 60 minutes is suitable from the viewpoint of calculation load.

(Processing flow of work vehicle management table 262 construction process)
FIG. 17 is an example of a processing flow of construction processing of the work vehicle management table 262 by the server 2. An example of the processing flow of the construction process of the work vehicle management table 262 by the server 2 will be described below with reference to FIG. 17.

At T31, the server 2 receives the detected value indicating the atmospheric pressure and the detected value indicating the acceleration together with the vehicle name of the working vehicle 1 from the working vehicle sensor device 12. At T32, the position acquisition unit 22 calculates the number of floors on which the work vehicle 1 is placed based on the detection value indicating the atmospheric pressure received at T31 and the management table 261. The management database 26 stores the calculated floor number in the work vehicle management table 262 in association with the vehicle name received at T31.

At T33, the operating status acquisition unit 23 determines the operating status of the work vehicle 1 based on the detected value indicating the acceleration received at T31. The operating status acquisition unit 23 stores the determined operating status in the work vehicle management table 262 in association with the vehicle name received at T31.

At T34, the server 2 determines whether or not a detection value has been received from the work vehicle sensor device 12. If received (YES at T34), the process returns to T32, and the position determination and storage of the work vehicle 1 (T32), the operation status determination and storage of the work vehicle 1 (T33) are performed. If it has not been received (NO at T34), the process at T34 is repeated. That is, in the process flow of FIG. 17, the position and operating status of the work vehicle 1 in the work vehicle management table 262 are updated every time a detection value is received from the work vehicle sensor device 12.

(Operations and effects of embodiments)
In this embodiment, since the floor number of the work vehicle sensor device 12 is determined using the actual measured value of atmospheric pressure and the correction value of the standard altitude, the work vehicle 1 on which the work vehicle sensor device 12 is installed is arranged. The possibility of erroneously specifying the rank can be suppressed as much as possible.

Further, in this embodiment, the usage status is outputted on the usage status confirmation screen 251, grouped by business name and individual name. Therefore, according to the present embodiment, it is possible to visually and clearly display which worker is using the work vehicle 1.

In this embodiment, the work vehicle sensor device 12 is provided on the elevated work platform 11 of the work vehicle 1. Therefore, even if the work vehicle 1 is not moving, if the high-altitude work platform 11 is moving up and down depending on the work, the acceleration sensor 1203 of the work vehicle sensor device 12 will detect the acceleration when the high-place work platform 11 goes up and down. Can be detected. That is, according to the present embodiment, the operating status of the work vehicle 1 can be acquired even when the work vehicle 1 is not moving. Note that if it is not necessary to detect the elevation of the elevated work platform 11, the work vehicle sensor device 12 may be provided at a location other than the elevated work platform 11 of the work vehicle 1, for example.

<First modification of location specifying process>
Note that the process for specifying the location of the work vehicle 1 in the above embodiment may be modified as follows. In the process of step T25 in the above embodiment, the standard altitude (correction value) of the floor where the fixed machine is located is used to temporarily identify (temporary calculation) the floor number where each work vehicle sensor device 12 is located. Although the floor number was tentatively identified using the above method, other methods may be used to provisionally identify the floor number.

Other provisional identification methods include, for example, a method that does not use standard altitude. For example, after tentatively identifying the rough number of floors estimated from the difference between the actual measured value of atmospheric pressure observed by the reference aircraft and the actual measured value of atmospheric pressure observed by the target aircraft, the system corresponds to the provisionally identified floor number. The standard altitude (correction value) may be used to finally identify the floor number.

<Second modification of location specifying process>
In addition, in the above embodiment, the value obtained by subtracting the actual measured value of atmospheric pressure observed by the target aircraft from the actual measured value of atmospheric pressure observed by the reference aircraft is multiplied by the standard altitude (correction value) of the floor where the fixed aircraft is located. However, by adding the height of the reference aircraft, the number of floors where the target aircraft was located was tentatively determined. However, provisional identification of the floor number may be performed using standard altitudes of other floors. For example, the value obtained by subtracting the actual measured value of atmospheric pressure observed by the target aircraft from the measured value of atmospheric pressure observed by the reference aircraft is multiplied by the standard altitude (corrected value) of the floor where the reference aircraft is located, and then The number of floors where the target aircraft is located may be provisionally determined by adding the heights of the target aircraft.

<Third modification example of location specifying process>
In addition, in the above embodiment, the number of floors where the target aircraft is located is determined through a two-step process of provisional calculation and recalculation. It may be finally specified as the floor number where the is located. In this case, the processing of the server 2 can be reduced because recalculation processing is not necessary. Such a modification is suitable when there is no practical problem with the required accuracy even if the rank is provisionally specified by the temporary calculation. Even in this modified example, since the calculation is performed using the standard altitude, it is possible to specify the floor number with higher accuracy than other calculation methods that do not use the standard altitude.

<Other variations>
In the embodiment, the work vehicle sensor device 12 includes two sensors: an air pressure sensor 1202 and an acceleration sensor 1203. However, the sensors included in the work vehicle sensor device 12 are not limited to these, and the work vehicle sensor device 12 may include other sensors. The work vehicle sensor device 12 may further include, for example, a Global Positioning System (GPS) sensor. Since the work vehicle sensor device 12 includes a GPS sensor, the server 2 can identify the floor where the work vehicle 1 is located using the atmospheric pressure sensor 1202 (identify the position in the height direction), and also identify the work vehicle 1 on the same floor. It is also possible to specify the position (horizontal position).

In the embodiment, the microcomputer 1201 of the work vehicle sensor device 12 suppresses the transmission of the detected value of the acceleration sensor 1203 to the server 2 when the detected value of the acceleration sensor 1203 is less than a threshold value. However, the microcomputer 1201 may transmit the detected value of the acceleration sensor 1203 to the server 2 even if the detected value is less than the threshold value. In this case, the server 2 may determine that the work vehicle 1 is not in operation if the received detection value of the acceleration sensor 1203 (or the acceleration indicated by the detection value) is less than the threshold value.

Further, in the above embodiment, the floor number of the work vehicle 1 is determined, but it may be used to determine the floor number of various work equipment other than the work vehicle. Various types of work equipment other than work vehicles include various types of equipment related to construction work.

The usage reception screen 241 may further include a time slot designation field for accepting designation of the time slot in which the work vehicle 1 is to be used. For example, the time zone may specifically specify a start time to an end time, or may specify morning or afternoon. When the usage reception screen 241 accepts the specification of a time period, the time period may also be displayed on the usage status confirmation screen.

A two-dimensional code may be used to accept the use of the work vehicle 1. For example, a two-dimensional code including information indicating the vehicle name of the work vehicle 1 is attached to each work vehicle 1. Then, the tablet terminal 3 may accept the use of the work vehicle 1 by photographing the two-dimensional code attached to the work vehicle 1 with the camera 307.

In the embodiment, the work vehicle sensor device 12 and the reference sensor device 13 transmit the detected values at intervals set respectively, but the timings at which the work vehicle sensor device 12 and the reference sensor device 13 transmit the detected values are set respectively. is not limited to the specified interval. For example, the work vehicle sensor device 12 and the reference sensor device 13 may transmit detection values in response to instructions from the tablet terminal 3. If the battery 1204 included in the work vehicle sensor device 12 has sufficient remaining capacity, there is no problem even if the detected values are transmitted frequently; rather, the operating status of the work vehicle 1 or the position of the work vehicle 1 can be transmitted as desired. You can check it at the timing of.

In the embodiment, on the operating status confirmation screen 252, operating status icons 253 that schematically indicate the operating status of each work vehicle 1 are displayed. The operating status icon 253 allows the operating status of each work vehicle 1 to be visually grasped. By making it possible to understand the operating status of the work vehicle 1, for example, it becomes possible to understand the work vehicle 1 that has been registered for use but is not in operation, and to prevent unnecessary registration of use, etc. It can also be used to alert workers to complete usage registration. Further, the operation status icon 253 may be displayed in a manner that allows the user to easily recognize the fact that the device is not in operation even though the device is registered for use, for example, in a different color.

Although the tablet terminal 3 is used in the embodiment, the portable information processing device used by the worker in the work equipment management system 100 is not limited to the tablet terminal 3. The portable information processing device used by the worker may be, for example, a smartphone, a mobile phone, a notebook personal computer, or a wearable terminal.

The embodiments and modifications disclosed above can be combined.

<Computer-readable recording medium>
An information processing program that causes a computer or other machine or device (hereinafter referred to as a computer or the like) to realize any of the above functions can be recorded on a computer-readable recording medium. Then, by causing a computer or the like to read and execute the program on this recording medium, the function can be provided.

Here, a computer-readable recording medium is a recording medium that stores information such as data and programs through electrical, magnetic, optical, mechanical, or chemical action and can be read by a computer, etc. means. Examples of such recording media that are removable from computers and the like include flexible disks, magneto-optical disks, Compact Disc Read Only Memory (CD-ROM), Compact Disc-Recordable (CD-R), and Compact Disc-ReWriterable. (CD-RW), Digital Versatile Disc (DVD), Blu-ray Disc (BD), Digital Audio Tape (DAT), 8mm tape, and memory cards such as flash memory. In addition, there are hard disks, ROMs, etc. as recording media fixed to computers and the like.

1. Work vehicle 2. Server 3. Tablet terminal 4. Building 11. High-altitude work platform 12. Work vehicle sensor device 13. Reference sensor device 21. Calculation unit 22. Position acquisition unit 23 ...Operating status acquisition section 24..Usage reception section 25..Output section 26..Management database N1..First wireless link N2..Second wireless link 100..Work equipment management system 201,301..CPU
202,302...Main storage unit 203,303...Auxiliary storage unit 204,1205,1303...First communication unit 205,304...Second communication unit 241...Usage reception screen 251...Usage status confirmation screen 252・・Operating status confirmation screen 253 ・・Operating status icon 261 ・・Management table 262 ・・Work vehicle management table 263 ・・Usage status management table 305 ・・Display 306 ・・Touch panel 307 ・・Camera 1201, 1301 ・・Microcomputer 1202 , 1302... Barometric pressure sensor 1203... Acceleration sensor 1204... Battery 1205... Switch 2411... Vehicle name input field 2412... User company name input field 2413... User name input field 2414... Comment entry field 2415・Registration button 2511 ・Building image 2512 ・Hierarchical image 2513 ・Usage status table

Claims (8)

A work equipment management system for managing multiple work equipment used in work in a building with a hierarchical structure,
Based on the equipment atmospheric pressure, which is the detected value of the atmospheric pressure sensor provided in each of the plurality of work equipment, and the reference atmospheric pressure, which is the detected value of the atmospheric pressure sensor provided at a predetermined location in the building, comprising a processing unit that identifies the floor number on which each of the work equipment is located;
The processing unit includes:
After calculating the first related value for each floor, which is a value related to the theoretical atmospheric pressure on each floor of the building based on a general formula expressing the relationship between atmospheric pressure and altitude, the actual height between each floor and the predetermined location is calculated. a first process of calculating a relational value between the difference and the first related value as a theoretical standard altitude for each floor;
When the height of the installation location is known and the predetermined floor pressure is obtained, which is the detected value of a pressure sensor placed on a predetermined floor different from the floor of the predetermined location, the height of the location where the predetermined floor pressure is obtained and the predetermined a second process of calculating for the predetermined floor a relational value with a second related value that is a value related to floor pressure as an actual standard altitude;
a third process of calculating a corrected standard altitude based on a comparison between the theoretical standard altitude and the actual standard altitude at the predetermined floor;
executing a fourth process of determining the floor number on which each of the plurality of work equipment is located based on the equipment atmospheric pressure and the corrected standard altitude;
Work equipment management system. The processing unit includes:
In the first process, after calculating the theoretical pressure difference for each floor by subtracting the reference pressure from the theoretical pressure on each floor of the building based on a general formula expressing the relationship between atmospheric pressure and altitude, Calculate for each floor the value obtained by dividing the actual height difference from the point by the theoretical pressure difference as the theoretical standard altitude, which is the height per unit atmospheric pressure,
In the second process, when the predetermined floor pressure is obtained, an actual pressure difference is calculated by subtracting the reference pressure from the predetermined floor pressure, and then the height of the point where the predetermined floor pressure is obtained is calculated as the actual pressure difference. Calculate the value divided by as the actual standard altitude, which is the height per unit atmospheric pressure, for the predetermined floor,
In the third process, the difference between the theoretical standard altitude and the actual standard altitude at the predetermined floor is calculated as an offset value, and then the corrected standard altitude is calculated by correcting the theoretical standard altitude with the offset value. ,
The work equipment management system according to claim 1. In the fourth process, the processing unit calculates the altitude from the altitude calculated by multiplying the difference value obtained by subtracting the reference air pressure from the equipment air pressure by the corrected standard altitude or the actual standard altitude at the predetermined floor. tentatively determines the floor where each of the plurality of work equipment is located;
The work equipment management system according to claim 2. In the fourth process, the processing unit calculates the plurality of altitudes from the altitude calculated by multiplying the difference value obtained by subtracting the reference air pressure from the equipment air pressure by the corrected standard altitude at the provisionally determined floor. Make a final determination of the floor where each piece of work equipment is located.
The work equipment management system according to claim 3. The predetermined location is a floor near the ground of the building;
A work equipment management system according to any one of claims 1 to 4. The work equipment is an aerial work vehicle equipped with an elevated work platform that can be raised and lowered,
The equipment atmospheric pressure is a detected value of an atmospheric pressure sensor provided on the high-altitude work platform,
The work equipment management system according to claim 1. A work equipment management method for managing a plurality of work equipment used in work in a building having a hierarchical structure, the method comprising:
Based on the equipment atmospheric pressure, which is the detected value of the atmospheric pressure sensor provided in each of the plurality of work equipment, and the reference atmospheric pressure, which is the detected value of the atmospheric pressure sensor provided at a predetermined location in the building, A processing unit that identifies the floor number on which each piece of work equipment is located;
After calculating the first related value for each floor, which is a value related to the theoretical atmospheric pressure on each floor of the building based on a general formula expressing the relationship between atmospheric pressure and altitude, the actual height between each floor and the predetermined location is calculated. a first process of calculating a relational value between the difference and the first related value as a theoretical standard altitude for each floor;
When the height of the installation location is known and the predetermined floor pressure is obtained, which is the detected value of a pressure sensor placed on a predetermined floor different from the floor of the predetermined location, the height of the location where the predetermined floor pressure is obtained and the predetermined a second process of calculating for the predetermined floor a relational value with a second related value that is a value related to floor pressure as an actual standard altitude;
a third process of calculating a corrected standard altitude based on a comparison between the theoretical standard altitude and the actual standard altitude at the predetermined floor;
executing a fourth process of determining the floor number on which each of the plurality of work equipment is located based on the equipment atmospheric pressure and the corrected standard altitude;
Work equipment management method. A work equipment management program for managing multiple work equipment used in work in a building with a hierarchical structure,
Based on the equipment atmospheric pressure, which is the detected value of the atmospheric pressure sensor provided in each of the plurality of work equipment, and the reference atmospheric pressure, which is the detected value of the atmospheric pressure sensor provided at a predetermined location in the building, a computer that identifies the floor on which each piece of work equipment is located;
After calculating the first related value for each floor, which is a value related to the theoretical atmospheric pressure on each floor of the building based on a general formula expressing the relationship between atmospheric pressure and altitude, the actual height between each floor and the predetermined location is calculated. a first process of calculating a relational value between the difference and the first related value as a theoretical standard altitude for each floor;
When the height of the installation location is known and the predetermined floor pressure is obtained, which is the detected value of a pressure sensor placed on a predetermined floor different from the floor of the predetermined location, the height of the location where the predetermined floor pressure is obtained and the predetermined a second process of calculating for the predetermined floor a relational value with a second related value that is a value related to floor pressure as an actual standard altitude;
a third process of calculating a corrected standard altitude based on a comparison between the theoretical standard altitude and the actual standard altitude at the predetermined floor;
executing a fourth process of determining the floor number on which each of the plurality of work equipment is located based on the equipment atmospheric pressure and the corrected standard altitude;
Work equipment management program.

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