Work equipment management system, work equipment management method, and work equipment management program

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

Technical Field

[0001] The present invention relates to a work equipment management system, a work equipment management method, and a work equipment management program.

Background Art

[0002] At a construction site, work vehicles such as transport vehicles for transporting materials and aerial work platforms, and various other work equipment are used. These work equipment may be shared by multiple workers. Therefore, various management methods have been proposed to facilitate the sharing of such work equipment (see, for example, Patent Documents 1-4).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0004] As a method for specifying the floor where work equipment is arranged at a construction site of a building having a hierarchical structure, a method using the air pressure detected by an air pressure sensor provided in the work equipment can be considered. In this case, for example, 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 provided in the work equipment, it is possible to specify the floor where the work equipment is arranged. However, since weather conditions change every moment, in such a method, there is a possibility of mis-specifying the floor where the work equipment is arranged.

[0005] Therefore, the present invention aims to improve the accuracy of determining the floor on which work equipment is located using atmospheric pressure. [Means for solving the problem]

[0006] To solve the above problems, this invention uses standard altitude, which is the height per unit atmospheric pressure.

[0007] More specifically, the present invention is a work equipment management system for managing multiple work equipment used in work within a building having a hierarchical structure, comprising a processing unit that identifies the floor on which each of the multiple work equipment is located based on the equipment pressure, which is the detected value of a pressure sensor provided on each of the multiple work equipment, and the reference pressure, which is the detected value of a pressure sensor provided at a predetermined location within the building, the processing unit performs a first process which calculates for each floor a first related value, which is a value related to the theoretical pressure of each floor of the building based on a general formula that expresses the relationship between pressure and altitude, and then calculates for each floor the theoretical standard altitude as the relationship between the difference in actual height between each floor and the predetermined location and the first related value, the processing unit performs a second process which, when the height of the location where the predetermined floor pressure is obtained is known and the detected value of a pressure sensor provided on a predetermined floor different from the floor of the predetermined location, calculates for the predetermined floor the actual standard altitude as the relationship between the height of the location where the predetermined floor pressure is obtained and the second related value, which is a value related to the predetermined floor pressure, the processing unit performs a third process which calculates a corrected standard altitude based on a comparison of the theoretical standard altitude and the actual standard altitude on the predetermined floor, and based on the equipment pressure and the corrected standard altitude, A fourth process is performed to determine the floor on which each piece of work equipment is located.

[0008] As described above, the theoretical standard altitude is determined using a general formula that expresses 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. Therefore, it is possible to determine the floor number based on a calculation process that is not biased towards either theoretical or measured values. Thus, for example, it is possible to determine the floor on which work equipment is located with greater accuracy compared to determining the floor number based solely on measured values.

[0009] Furthermore, the processing unit may, in the first process, calculate the theoretical pressure difference for each floor of the building by subtracting the reference pressure from the theoretical pressure for each floor based on a general formula representing the relationship between atmospheric pressure and altitude, and then calculate the theoretical standard altitude for each floor, which is the height per unit pressure, by dividing the difference in actual height between each floor and a predetermined location by the theoretical pressure difference. In the second process, after obtaining the atmospheric pressure of a predetermined floor, calculate the actual pressure difference by subtracting the reference pressure from the atmospheric pressure of the predetermined floor, and then calculate the actual standard altitude for the predetermined floor, which is the height per unit pressure, by dividing the height of the location where the atmospheric pressure of the predetermined floor was obtained by the actual pressure difference. In the third process, after calculating the difference between the theoretical standard altitude and the actual standard altitude at the predetermined floor as an offset value, calculate the corrected standard altitude by correcting the theoretical standard altitude with respect to the offset value. According to this, the theoretical standard altitude, which is the height per unit pressure, is identified using a general formula representing 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. Therefore, it is possible to determine the floor number based on a calculation process that is not biased towards either theoretical or measured values. Therefore, compared to determining the floor number based solely on actual measurements, for example, it becomes possible to identify the floor on which the work equipment is located with greater accuracy.

[0010] Furthermore, in the fourth process, the processing unit may perform a preliminary determination of the floor on which each of the multiple pieces of work equipment is located, based on the altitude calculated by multiplying the difference between the equipment pressure and the reference pressure by the corrected standard altitude on a predetermined floor or the actual standard altitude. This simplifies the calculation required to identify the floor on which the work equipment is located.

[0011] Furthermore, in the fourth process, the processing unit may perform a final determination of the floor on which each of the multiple pieces of work equipment is located, based on the altitude calculated by multiplying the difference between the equipment pressure and the reference pressure by the corrected standard altitude on the provisionally determined floor. This makes it possible to identify the floor on which the work equipment is located with higher accuracy.

[0012] Furthermore, the designated location may be a floor near the ground level of the building. This makes it possible to identify the floor on which work equipment is located even in the early stages of building construction.

[0013] Furthermore, the work equipment is an aerial work platform equipped with a platform that can be raised and lowered, and the equipment pressure may be the value detected by a pressure sensor installed on the aerial work platform. This makes it possible to understand the position and operating status of the aerial work platform.

[0014] Furthermore, the present invention can also be viewed from the perspective of methods and programs. For example, the present invention is a work equipment management method for managing multiple work equipment used in work within a building having a hierarchical structure, and a processing unit that identifies the floor on which each of the multiple work equipment is located based on the equipment pressure, which is the detected value of a pressure sensor provided on each of the multiple work equipment, and the reference pressure, which is the detected value of a pressure sensor provided at a predetermined location within the building, calculates a first related value for each floor, which is a value related to the theoretical pressure of each floor of the building based on a general formula that expresses the relationship between pressure and altitude, and then calculates a theoretical standard altitude for each floor based on the relationship between the difference in actual height between each floor and the predetermined location and the first related value, and a predetermined value, which is the detected value of a pressure sensor provided on a predetermined floor on which the height of the location is known and which is different from the floor of the predetermined location. When floor pressure is obtained, a second process may be performed to calculate the actual standard altitude for a given floor based on the relationship between the height of the location where the floor pressure is obtained and a second related value which is a value related to the floor pressure; a third process to calculate a corrected standard altitude based on a comparison of the theoretical standard altitude and the actual standard altitude on the given floor; and a fourth process to determine the floor on which each of the multiple pieces of work equipment is located based on the equipment pressure and the corrected standard altitude. [Effects of the Invention]

[0015] The disclosed technology enables improved accuracy in determining the floor on which work equipment is located based on atmospheric pressure. [Brief explanation of the drawing]

[0016] [Figure 1] Figure 1 is a diagram illustrating the overall configuration of the work equipment management system according to the embodiment. [Figure 2] Figure 2 is a diagram showing an example of the hardware configuration of the server. [Figure 3] Figure 3 is a diagram showing an example of the hardware configuration of the tablet terminal. [Figure 4] Figure 4 is a diagram showing an example of the hardware configuration of the work vehicle sensor device. [Figure 5] Figure 5 is a diagram showing an example of the hardware configuration of the reference sensor device. [Figure 6] Figure 6 is a diagram showing an example of the processing block of the server. [Figure 7] Figure 7 is a diagram showing an example of the management table stored in the management database. [Figure 8] Figure 8 is a diagram showing an example of the work vehicle management table stored in the management database. [Figure 9] Figure 9 is a diagram showing an example of the usage status management table stored in the management database. [Figure 10] Figure 10 is a diagram showing an example of the usage reception screen output by the usage reception unit. [Figure 11] Figure 11 is a diagram showing an example of the usage status confirmation screen output by the output unit. [Figure 12] Figure 12 is a diagram showing an example of the processing flow of the reference sensor device. [Figure 13] Figure 13 is a diagram showing an example of the processing flow of the work vehicle sensor device. [Figure 14] Figure 14 is a diagram showing a flowchart of the process for specifying the position of the work vehicle. [Figure 15] Figure 15 is an example of a table showing the standard altitude (theoretical value). [Figure 16] Figure 16 is an example of a table showing the standard altitude (corrected value). [Figure 17]Figure 17 shows an example of the processing flow for the server to build a work vehicle management table. [Modes for carrying out the invention]

[0017] <Embodiment> Embodiments will be described below with reference to the drawings. The configurations of the embodiments shown below are illustrative, and the disclosed technology is not limited to the configurations of the embodiments. Figure 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 system for managing a work vehicle 1 (an example of "work equipment" as defined in this application) used in construction work on a 19-story building 4 (an example of a "building with a multi-story structure" as defined in this application). The work equipment management system 100 comprises a work vehicle 1, a reference sensor device 13, a server 2, and a tablet terminal 3.

[0018] Work vehicle 1 is a vehicle used at a construction site. Work vehicle 1 is, for example, an aerial work platform 11 on which workers are placed. The aerial work platform 11 can be raised and lowered according to the height of the work object. The work vehicle sensor device 12 is installed on the aerial work platform 11. The vehicle sensor device 12 includes, for example, various sensors that detect the operating status and position of the work vehicle 1, and transmits the detected values ​​from the sensors to the server 2 via the first wireless link N1.

[0019] The reference sensor device 13 is a sensor device installed on the first floor of Building 4 (an example of a "designated location" as referred to in this application). The reference sensor device 13 includes a pressure sensor that measures the atmospheric pressure on the floor in which it is installed, and transmits the detected value from the pressure sensor to the server 2 via the first wireless link N1. It is preferable that the reference sensor device 13 be installed in a well-ventilated location where outside air can circulate naturally, as the measured value may be affected if it is installed in a private room or similar place with a certain degree of airtightness. Furthermore, the reference sensor device 13 is not limited to being installed on the first floor of Building 4, but may be installed at any location on the second floor or higher. However, since the work equipment management system 100 is used during the construction of Building 4, it is preferable that the reference sensor device 13 be installed on a floor near the ground floor of Building 4, so that the work equipment management system 100 can be used even in the early stages of construction when only the lower floors of Building 4 exist.

[0020] Server 2 is an information processing device. Server 2 receives and stores sensor detection values ​​acquired by work vehicle sensor devices 12 installed on each work vehicle 1 via the first wireless link N1. Server 2 also accepts user registration for work vehicle 1 from tablet terminal 3 via the second wireless link N2 and stores usage information indicating the accepted user registration. Server 2 provides work vehicle information based on the stored sensor detection values ​​and usage information to tablet terminal 3 via the second wireless link N2 so that it can be viewed.

[0021] Tablet terminal 3 is a portable information processing device used by workers at construction sites. Tablet terminal 3 displays work vehicle information provided by server 2 via second wireless link N2 on its display. In addition, tablet terminal 3 transmits the registration of work vehicle 1 to server 2 in response to operations from the worker.

[0022] (Hardware configuration of Server 2) Figure 2 shows an example of the hardware configuration of Server 2. Server 2 includes a Central Processing Unit (CPU) 201, a main memory unit 202, an auxiliary memory unit 203, a first communication unit 204, and a second communication unit 205. The CPU 201, main memory unit 202, auxiliary memory unit 203, first communication unit 204, and second communication unit 205 are interconnected by a connection bus.

[0023] The CPU 201 is also called a microprocessor unit (MPU) or processor. The CPU 201 is not limited to a single processor and may be in a multiprocessor configuration. Furthermore, a single CPU 201 connected via a single socket may have a multicore configuration. In server 2, the CPU 201 deploys programs stored in the auxiliary memory 203 to the work area of ​​the main memory 202 and controls peripheral devices through program execution. This allows server 2 to perform processing that matches a predetermined purpose.

[0024] The main memory unit 202 is exemplified as a memory unit that is directly accessed by the CPU 101. The main memory unit 202 includes Random Access Memory (RAM) and Read Only Memory (ROM).

[0025] The auxiliary storage unit 203 stores various programs and various data on a recording medium in a read-write manner. The auxiliary storage unit 203 is also called an external storage device. The auxiliary storage unit 203 contains the operating system (OS), various programs, Various tables and other data are stored. External devices include, for example, other information processing devices and external storage devices connected via a computer network. The auxiliary storage unit 203 may also be part of a cloud system, which is a group of computers on a network.

[0026] The auxiliary storage unit 203 may be, for example, an Erasable Programmable ROM (EPROM), a Solid State Drive (SSD), or a Hard Disk Drive (HDD). Alternatively, the auxiliary storage unit 203 may be a Compact Disc (CD) drive, a Digital Versatile Disc (DVD) drive, or a Blu-ray® Disc (BD) drive. Furthermore, the auxiliary storage unit 203 may be provided by a Network Attached Storage (NAS) or Storage Area Network (SAN).

[0027] The first communication unit 204 is an interface with the LTE network. The first communication unit 204 communicates with the elevated work platform 11 via the first wireless link N1, which is implemented by the LTE network.

[0028] The second communication unit 205 is an interface to a wireless Local Area Network (LAN). The second communication unit 205 communicates with the tablet terminal 3 via the second wireless link N2, which is implemented by the wireless LAN.

[0029] Server 2 may further include an input unit that receives, for example, operation instructions from a user. Examples of such input units include keyboards, pointing devices, touch panels, or voice input devices.

[0030] Server 2 may include, for example, an output unit that outputs data processed by CPU 201 or data stored in main memory 202. Such an output unit could be a Cathode Ray Tube (CRT) display, a Liquid Crystal Examples of output devices include LCD displays, Plasma Display Panels (PDPs), Electroluminescence (EL) panels, Organic EL panels, and printers.

[0031] (Hardware configuration of tablet device 3) Figure 3 shows an example of the hardware configuration of tablet terminal 3. Tablet terminal 3 includes a CPU 301, main memory 302, auxiliary memory 303, second communication unit 304, display 305, touch panel 302, and camera 307. Components identical to those in server 2 are denoted by the same reference numerals, and their descriptions are omitted. In tablet terminal 3, the display 305, touch panel 302, and camera 307 are also connected by a connection bus.

[0032] The display 305 displays data processed by the CPU 301 and data stored in the main memory 302. The display 305 is, for example, a Liquid Crystal Display (LCD), Plasma Display Panel (PDP), Electroluminescence (EL) panel, or Organic EL panel.

[0033] The touch panel 302 is superimposed on the display 305. The touch panel 302 detects contact by a finger and obtains the coordinate values ​​of the contact position. The touch panel 302 notifies the CPU 301 of the obtained coordinate values ​​of the contact position and time information. By placing the touch panel 302 on the display 305, the tablet terminal 3 can provide the operator with intuitive operation.

[0034] Camera 307 is a digital camera equipped with a Charge Coupled Device (CCD) image sensor or a Complementary metal-oxide-semiconductor (CMOS) image sensor. Camera 307 is capable of capturing both still and moving images.

[0035] (Hardware configuration of the work vehicle sensor device 12) Figure 4 shows an example of the hardware configuration of the work vehicle sensor device 12. The work vehicle sensor device 12 includes a microcontroller 1201, a barometric pressure sensor 1202, an acceleration sensor 1203, a battery 1204, a switch 1205, and a first communication unit 1205.

[0036] The microcontroller 1201 is a microcomputer. The microcontroller 1201 is, for example, a combination of a processor and a memory unit. The microcontroller 1201 may be, for example, a microcontroller unit (MCU), a system-on-a-chip (SoC), a system-large scale integration (LSI), a chipset, etc. Note that the microcontroller 1201 includes a memory unit. The memory unit of the microcontroller 1201 stores, for example, the name of a vehicle indicating work vehicle 1.

[0037] The pressure sensor 1202 is a sensor that detects atmospheric pressure. The pressure sensor 1202 is, for example, a semiconductor piezoresistive pressure sensor. The pressure sensor 1202 detects the atmospheric pressure at the location where the work vehicle sensor device 12 is installed.

[0038] The acceleration sensor 1203 is a sensor that detects acceleration. The acceleration sensor 1203 detects the acceleration of the work vehicle sensor device 12. Since the acceleration sensor 1203 is installed on the elevated work platform 11 of the work vehicle 1, even if the work vehicle 1 is not moving, if the elevated work platform 11 is rising or falling, the acceleration sensor 1203 will detect the acceleration of the elevated work platform 11.

[0039] The microcontroller 1201 associates the detected atmospheric pressure from the pressure sensor 1202 and the detected acceleration from the acceleration sensor 1203 with the vehicle name of the work vehicle 1, and transmits them to the server 2 via the first communication unit 1205 at predetermined intervals (for example, every 60 minutes). If the work vehicle 1 is equipped with a communication device, the microcontroller 1201 may transmit the detected values ​​to the server 2 via the work vehicle's communication device. In this case, the first communication unit 1205 can be omitted.

[0040] Furthermore, the microcontroller 1201 does not need to transmit the detected value from the acceleration sensor 1203 if it is below a preset threshold. The work vehicle sensor device 12 may be configured to generate an interrupt when, for example, the detected value of acceleration from the acceleration sensor 1203 is equal to or greater than the threshold. When an interrupt occurs, the microcontroller 1201 may transmit the detected value of atmospheric pressure from the pressure sensor 1202 and the detected value of acceleration from the acceleration sensor 1203 to the server 2, associating them with the vehicle name of work vehicle 1. Alternatively, if no interrupt occurs, the microcontroller 1201 may transmit the detected value of atmospheric pressure from the pressure sensor 1202 to the server 2 via the first communication unit 1205, associating it with the vehicle name of work vehicle 1.

[0041] Furthermore, the microcontroller 1201 may detect the remaining charge of the battery 1204 and transmit the detected remaining charge along with the values ​​detected by the barometric pressure sensor 1202 and the acceleration sensor 1203 to the server 2. The work vehicle sensor device 12 transmits at relatively long intervals of 60 minutes, thereby reducing the power consumption of the work vehicle 1, i.e., extending the lifespan of the battery 1204. Note that the transmission interval of the work vehicle sensor device 12 is not limited to 60 minutes, and the battery 1204 may be transmitted at intervals of 12 hours during the day's work (e.g., 1 hour) or during a predetermined period of use such as 1 week. The transmission interval may be set to 30 minutes, 90 minutes, etc., so that the remaining capacity of 4 lasts.

[0042] Battery 1204 supplies power to the microcontroller 1201, the barometric pressure sensor 1202, the acceleration sensor 1203, and the first communication unit 1205. Battery 1204 is, for example, a dry cell battery. If the work vehicle sensor device 12 can be powered by the battery of the work vehicle 1, battery 1204 may be omitted or a smaller capacity battery may be used.

[0043] Switch 1205 is, for example, a push-button switch. When switch 1205 is pressed, the microcontroller 1201 transmits to the server 2 via the first communication unit 1205, even if 60 minutes have not elapsed since the transmission of the previous detection value, the detection value indicating atmospheric pressure from the pressure sensor 1202 and the detection value indicating acceleration from the acceleration sensor 1203, associated with the name of the work vehicle 1.

[0044] (Hardware configuration of reference sensor device 13) Figure 5 shows an example of the hardware configuration of the reference sensor device 13. The reference sensor device 13 includes a microcontroller 1301, a barometric pressure sensor 1302, and a first communication unit 1303. Unlike the work vehicle sensor device 12, the reference sensor device 13 does not require a battery because it receives power from an outlet installed in building 4, for example.

[0045] The pressure sensor 1302 detects the atmospheric pressure at the location where the reference sensor device 13 is installed. The microcontroller 1301 transmits the detected value indicating the atmospheric pressure from the pressure sensor 1302 to the server 2 via the first communication unit 1205 at predetermined intervals (for example, every 60 minutes).

[0046] (Server 2 processing block) Figure 6 shows an example of a processing block of Server 2. Server 2 comprises a calculation unit 21, a position acquisition unit 22, an operating status acquisition unit 23, a user reception unit 24, an output unit 25, and a management database 26. Server 2 executes the processing of each part of Server 2, such as the calculation unit 21, the position acquisition unit 22 (an example of a "processing unit" as referred to in this application), the operating status acquisition unit 23, the user reception unit 24, the output unit 25, and the management database 26, by having the CPU 201 execute a computer program that has been loaded into the main memory unit 202.

[0047] The calculation unit 21 calculates the atmospheric pressure (theoretical value) corresponding to each floor of building 4. The calculation unit 21 stores the calculated atmospheric pressure (theoretical value) in the management database 26.

[0048] The management database 26 is a database that manages various information such as the number of floors and height of building 4, atmospheric pressure, and the usage status of the elevated work platform 11. Figure 7 shows 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 "altitude." "Number of floors" stores information indicating each floor of building 4. "Floor height" stores information indicating the height of the floor (ground clearance) of each floor of building 4, which has been measured in advance (or is based on the design). "Floor height" also stores information indicating the value obtained by adding the floor height to the altitude (above sea level) of the land on which building 4 stands, that is, the altitude (above sea level) of the floor of each floor of building 4. The units for "floor height" and "altitude" are "m (meters)." This information stored in the management database 26 is received by the server 2 through a registration operation on the tablet terminal 3, for example, and stored in the management database 26.

[0049] Figure 8 shows an example of a work vehicle management table 262 stored in the management database 26. The work vehicle management table 262 includes the following items: "Vehicle Name", "Location", "Operating Status", "Remaining Capacity", and "Update Date and Time". "Vehicle Name" stores the name assigned to work vehicle 1. "Location" stores information indicating the location where work vehicle 1 is located. For example, if work vehicle 1 is located on the 3rd floor of building 4, "3rd floor" will be stored in the field. The "Operating status" field stores information indicating the operating status of work vehicle 1. This information may include, for example, "Operating" or "Stopped". The "Remaining capacity" field stores information indicating the remaining capacity of the battery 1204 of the work vehicle sensor device 12 mounted on work vehicle 1. For example, the information indicating the remaining capacity of battery 1204 may be expressed as a percentage (%).

[0050] Figure 9 shows an example of a usage status management table 263 stored in the management database 26. The usage status management table 263 includes the following items: "ID", "Vehicle Name", "Contractor Name", "Individual Name", and "Comments". "ID" stores an ID that identifies the usage status of each work vehicle 1. "Vehicle Name" stores the name of work vehicle 1. "Contractor Name" stores the name of the contractor to which the worker using work vehicle 1 belongs. "Individual Name" stores the name of the worker using work vehicle 1. "Comments" stores comments such as information about work vehicle 1 and information about construction work. For example, comments based on decisions made at coordination meetings held between contractors or workers on the day before use to determine who will use which work vehicle 1 may be registered in "Comments". For example, if a comment such as "Request to use from XX day" is registered in "Comments", that comment can be taken into consideration at the coordination meeting when dispatching work vehicle 1.

[0051] 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 the detected value indicating the atmospheric pressure detected by the pressure sensor 1202 from the work vehicle sensor device 12. Then, the position acquisition unit 22 performs various calculation processes, which will be described later, to identify the floor on which the work vehicle 1 is located. The position acquisition unit 22 then stores the floor on which the work vehicle 1 is located, in association with the name of the work vehicle 1, in the work vehicle management table 262.

[0052] The operational status acquisition unit 23 acquires the operational status of the work vehicle 1 based on the acceleration detected by the work vehicle sensor device 12. The operational status acquisition unit 23 receives the detected value indicating the acceleration detected by the acceleration sensor 1203 from the work vehicle sensor device 12. The operational status acquisition unit 23 determines that the work vehicle 1 is operating if the received detected value indicating the acceleration is above a threshold. The operational status acquisition unit 23 also determines that the work vehicle 1 is not operating if the received detected value indicating the acceleration is below a threshold. The operational status acquisition unit 23 stores the determined operational status in the work vehicle management table 262, associating it with the vehicle name of the work vehicle 1.

[0053] The usage registration unit 24 accepts usage registrations that associate a work vehicle 1 with the name of the worker who will use the work vehicle 1. The usage registration unit 24 sends a usage registration screen to the tablet terminal 3 in response to a request from the tablet terminal 3, for example. Figure 10 shows an example of a usage registration screen 241 output by the usage registration unit 24. The usage registration screen 241 includes a vehicle name input field 2411, a service provider name input field 2412, a user name input field 2413, a comment entry field 2414, and a registration button 2415. The vehicle name input field 2411 may be, for example, a pull-down menu that allows the user to select the name of a work vehicle 1 that is not currently in use. Information is entered in each of the input fields of the usage registration screen 2411, service provider name input field 2412, and user name input field 2413 on the tablet terminal 3, for example, by the worker who will use the work vehicle 1. Specifically, the vehicle name input field 2411 is where the name of the work vehicle 1 used by the worker is entered. The contractor name input field 2412 is where the name of the contractor to which the worker belongs is entered. The user name input field 2413 is where the worker's personal name is entered. The comment input field 2414 is where comments such as information about work vehicle 1 and information about the construction work are entered. Then, when the registration button 2415 is pressed with information entered in each of the input fields (vehicle name input field 2411, contractor name input field 2412, user name input field 2413, and comment input field 2414), the usage information including the information entered in each input field is entered. The data is transmitted from the bullet terminal 3 to the server 2 via the second wireless link N2.

[0054] When the user reception unit 24 receives usage information from the tablet terminal 3, it stores the received usage information in the usage status management table 263. Specifically, the user reception unit 24 stores the information entered in the vehicle name input field 2411 of the user reception screen 241 in the "vehicle name" field of the usage status management table 263. The user reception unit 24 stores the information entered in the service provider name input field 2412 of the user reception screen 241 in the "service provider name" field of the usage status management table 263. The user reception unit 24 stores the information entered in the user name input field 2413 of the user reception screen 241 in the "personal name" field of the usage status management table 263. The user reception unit 24 stores the information entered in the comment input field 2414 in the "comment" field of the usage status management table 263. Through these processes, the user reception unit 24 stores the usage information in the usage status management table 263.

[0055] 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, when the output unit 25 receives a usage status confirmation request from the tablet terminal 3, it 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. The output unit 25 then transmits the generated usage status confirmation screen to the tablet terminal 3.

[0056] Figure 11 shows an example of a 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 that schematically shows building 4. The building image 2511 shows a hierarchical image 2512 that schematically shows each floor of building 4. Based on the information stored in the work vehicle management table 262 and the usage status management table 263, the output unit 25 places the usage status table 2513, which shows the usage status of work vehicles, onto the hierarchical image 2512 that shows each floor. In the example of the usage status table 2513 shown in Figure 11, the list of usage statuses is sorted by contractor name, and further sorted by individual name.

[0057] (Processing flow of the reference sensor device 13) Figure 12 shows an example of the processing flow of the reference sensor device 13. The following description of the example processing flow of the reference sensor device 13 will refer to Figure 12.

[0058] Initial setup is performed in T1. This initial setup includes, for example, the calibration of the barometric pressure sensor 1302 and the registration of server 2, which will receive the detected values. Details of the calibration will be described later.

[0059] At T2, the pressure sensor 1302 measures the atmospheric pressure. At T3, the microcontroller 1301 transmits the detected value indicating the atmospheric pressure measured by the pressure sensor 1302 at T2 to the server 2 via the first communication unit 1205.

[0060] In T4, the microcontroller 1301 determines whether 60 minutes have passed since the last transmission of the detected value. If 60 minutes have passed (YES in T4), the process returns to T2, and atmospheric pressure measurement (T2) and transmission of the detected value (T3) are performed. If 60 minutes have not passed (NO in T4), the process in T4 is repeated.

[0061] (Processing flow of the work vehicle sensor device 12) Figure 13 shows an example of the processing flow of the work vehicle sensor device 12. The following description of the example of the processing flow of the work vehicle sensor device 12 will refer to Figure 13.

[0062] Initial setup is performed in T11. This initial setup includes, for example, calibration of the barometric pressure sensor 1202 and the accelerometer 1203, and registration of server 2, which will receive the detected values. It also sets the threshold for generating interrupts (the threshold for the detected value of the accelerometer 1203). Details of the calibration will be described later.

[0063] In T12, the pressure sensor 1202 measures atmospheric pressure. The acceleration sensor 1203 also measures acceleration. If an interrupt occurs, i.e., if the detected value of acceleration detected in T12 is above the threshold (YES in T13), the process proceeds to T14. If no interrupt occurs, i.e., if the detected value of acceleration detected in T12 is below the threshold (NO in T13), the process proceeds to T15.

[0064] In T14, the microcontroller 1201 transmits to the server 2 via the first communication unit 1205 the detected value indicating the atmospheric pressure measured by the pressure sensor 1202 in T12 and the detected value indicating the acceleration measured by the acceleration sensor 1203.

[0065] In T15, the detected value indicating the atmospheric pressure measured by the pressure sensor 1202 in T12 is transmitted to the server 2 via the first communication unit 1205.

[0066] At T16, the microcontroller 1201 determines whether or not switch 1205 has been pressed. If it has been pressed (YES at T16), the process returns to T12, where atmospheric pressure and acceleration are measured (T12) and the detected values ​​are transmitted (T14, T15). If it has not been pressed (NO at T16), the process proceeds to T15.

[0067] In T17, the microcontroller 1201 determines whether 60 minutes have passed since the last transmission of the detected value. If 60 minutes have passed (YES in T17), the process returns to T12, where atmospheric pressure and acceleration are measured (T12) and the detected values ​​are transmitted (T14, T15). If 60 minutes have not passed (NO in T17), the process returns to T16.

[0068] (calibration) Due to individual differences between the work vehicle sensor device 12 and the reference sensor device 13, the detected values ​​of each sensor may differ even when measuring the same atmospheric pressure. Such differences in detected values ​​due to individual differences can range from, for example, ±30 Pa. Therefore, if these individual differences are left unaddressed during operation, the accuracy of the server 2's detection of the work vehicle 1's position will decrease. To address this, sensor calibration is performed as shown at T1 in Figure 12 and T11 in Figure 13. During calibration, the work vehicle sensor device 12 and the reference sensor device 13 are placed on the same floor (same height), and atmospheric pressure measurements are performed simultaneously for each sensor. Calibration is then performed on the detected values ​​of each sensor so that they all show the same atmospheric pressure. Finally, the calibrated work vehicle sensor device 12 and the reference sensor device 13 are placed on predetermined floors of Building 4.

[0069] (Location of work vehicle 1) Figure 14 is a flowchart showing the process for determining the position of work vehicle 1. This process is mainly handled by the position acquisition unit 22. First, let's explain the overview of the flowchart shown in Figure 14.

[0070] In determining the position of work vehicle 1, the standard altitude (theoretical value) is first calculated (T21). Standard altitude is a value representing the height (altitude difference) per unit pressure. The standard altitude (theoretical value) calculated in this step T21 is a theoretical standard altitude value that does not take actual pressure into consideration. Therefore, this step T21 is basically performed in the initial stage when the work equipment management system 100 is first applied to building 4, but is performed periodically or irregularly after the application begins. That's fine.

[0071] As mentioned above, the standard altitude is a value that represents the height (altitude difference) per unit pressure. Therefore, basically, the elevation of the work vehicle sensor device 12 in building 4 can be determined by multiplying 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 by the standard altitude. However, the standard altitude (theoretical value) calculated in this step T21 is a theoretical standard altitude value that does not take into account the actual atmospheric pressure. Therefore, the standard altitude that can be used to determine the elevation of the work vehicle sensor device 12 is calculated by performing the following process.

[0072] In other words, after the calculation of the standard altitude (theoretical value) in step T21, the calculation of the standard altitude (measured value) is performed (T22). The standard altitude (measured value) is calculated based on the actual atmospheric pressure obtained from the work vehicle sensor device 12 and the reference sensor device 13. In step T22, the standard altitude (measured value) at a predetermined floor is calculated using the measured atmospheric pressure obtained from a work vehicle sensor device 12 that is installed on a predetermined floor different from the reference sensor device 13 and whose location elevation is known, and the measured atmospheric pressure obtained from the work vehicle sensor device 12. Since the actual atmospheric pressure is constantly changing, the process from step T22 onward is repeatedly executed as long as the work equipment management system 100 is applied to building 4.

[0073] After the standard height (measured value) is calculated in step T22, the standard height offset value is calculated (T23). The standard height offset value is calculated as the difference between the standard height (measured value) for a predetermined floor identified in step T22 and the standard height (theoretical value) for the same predetermined floor calculated in step T21.

[0074] After the calculation of the standard altitude offset value in step T23, a process is performed to calculate the standard altitude (corrected value) for each floor by adding the standard altitude offset value to the standard altitude (theoretical value) for each floor (T24). Therefore, basically, by subtracting the atmospheric pressure observed by the work vehicle sensor device 12 from the atmospheric pressure observed by the reference sensor device 13 and multiplying the result by the standard altitude (corrected value), the elevation of the work vehicle sensor device 12 in building 4 can be determined with almost accuracy.

[0075] After the calculation of the standard altitude (corrected value) in step T24, the floor number on which each work vehicle sensor device 12 located in building 4 is located is determined (T25). The floor number is determined by calculating the elevation using the measured atmospheric pressure observed by each work vehicle sensor device 12 and the standard altitude (corrected value) for a predetermined floor calculated in step T24, thereby provisionally identifying the floor number on which each work vehicle sensor device 12 is located. Next, the elevation is recalculated using the measured atmospheric pressure observed by the work vehicle sensor device 12 and the standard altitude (corrected value) corresponding to the provisionally identified floor number, and the final identification of the floor number on which the work vehicle sensor device 12 is located is performed.

[0076] By repeatedly executing the above series of steps T22 to T24, accurate floor determination can be maintained even when atmospheric pressure fluctuates moment by moment due to weather changes. Below, the details of each of the above steps T21 to T24 will be explained with specific examples.

[0077] (Step T21) Figure 15 is an example of a table showing standard altitudes (theoretical values). Management Table 261 also includes information on such standard altitudes (theoretical values). In this explanation using an example, we assume that among the multiple work vehicle sensor devices 12, one is installed on a predetermined floor different from the reference sensor device 13, and that the elevation of its installation location is known, and that it is installed on the 16th floor. Therefore, in the management table 261 of Figure 15, the standard altitude (theoretical value) of the 16th floor is shown in gray.

[0078] In step T21, the theoretical atmospheric pressure for each floor is calculated. "Atmospheric Pressure (Theoretical Value)" is the theoretical atmospheric pressure for each floor, and the value calculated using the following formula (1) is stored. In formula (1) below, the unit of atmospheric pressure P is "hPa", but in the following explanation, the unit of atmospheric pressure will be "Pa". Also, in formula (1) below, the unit of z (altitude) is "km", but in the following explanation, the unit of altitude and height will be "m".

number

[0079] Next, the pressure difference from the first floor to each floor is calculated. Then, the standard height (theoretical value) of each floor is calculated by dividing the height of each floor (floor height) shown in the management table 261 in Figure 7 by the corresponding pressure difference. Standard altitude (theoretical value) = floor height / pressure difference

[0080] (Step T22) In calculating the standard height (measured value), data from the work vehicle sensor device 12 of the work vehicle 1 on the 16th floor, whose placement location is specified (hereinafter referred to as the "fixed device," but it does not restrict movement to other floors; also, the "fixed device" may be fixed to the building rather than the work vehicle 1), is used. Therefore, the height of the fixed device in Building 4 is calculated by adding the height from the floor to the fixed device (measured value) on that floor to the floor height on which the fixed device is installed. Stationary unit height = Floor height of the installation floor + Height from the floor to the stationary unit

[0081] As shown in Figure 7, the floor height of the 16th floor is 74.2m. Therefore, if the height from the floor to the stationary equipment is 0.92m, the height of the stationary equipment will be 75.12m.

[0082] Furthermore, in calculating the standard height (measured value), data from the reference sensor device 13 (hereinafter referred to as the "reference device") installed on the first floor is used. Therefore, the height of the reference device in Building 4 is calculated by adding the height from the floor to the reference device (measured value) on that floor to the floor height on which the reference device is installed. Standard machine height = Installation floor height + Height from floor to standard machine

[0083] As shown in Figure 7, the floor height of the first floor is 0m. Therefore, if the height from the floor to the stationary unit is 0.65m, the height of the reference unit will be 0.65m.

[0084] Next, the standard height (measured value) at the 16th floor is calculated by dividing the difference obtained by subtracting the measured atmospheric pressure value obtained by the fixed unit from the measured atmospheric pressure value obtained by the reference unit by the difference obtained by subtracting the height of the reference unit from the height of the fixed unit. Standard altitude (measured value) = (fixed aircraft height - reference aircraft height) / (reference aircraft pressure - fixed aircraft pressure)

[0085] For example, if the measured atmospheric pressure observed by the stationary instrument is 101093 Pa and the measured atmospheric pressure observed by the reference instrument is 101988 Pa, the standard altitude (measured value) on the 16th floor is calculated as follows. Standard altitude (measured value) = (75.12 - 0.65) / (101988 - 101093) ) =0.083206704 [m / Pa]

[0086] (Step T23) The standard altitude offset value is calculated by subtracting the standard altitude (theoretical value) from the standard altitude (measured value) calculated in Step T22. Standard altitude offset value = Standard altitude (measured value) - Standard altitude (theoretical value)

[0087] As shown in the management table 261 in Figure 15, the standard height (theoretical value) of the 16th floor is 0.083580743 [m / Pa], so in this specific example, the standard height offset value is calculated as follows. Standard altitude offset value = 0.083206704 - 0.083580743 =-0.000374039 [m / Pa]

[0088] (Step T24) After calculating the standard height offset value, the standard height (corrected value) for each floor is calculated by adding the standard height offset value to the standard height (theoretical value) for each floor. Figure 16 is an example of a table showing the standard height (corrected value). Management table 261 also contains information on such standard height (corrected value). Standard altitude (corrected value) = Standard altitude (theoretical value) + Standard altitude offset value

[0089] (Step T25) After the calculation of the standard altitude (corrected value), the elevation is first calculated using the measured atmospheric pressure observed by each work vehicle sensor device 12 and the standard altitude (corrected value) at a predetermined floor calculated in Step T24, and the floor number on which each work vehicle sensor device 12 is located is provisionally determined (provisional calculation). In the following example, a work vehicle sensor device 12 located on the 3rd floor will be used as an example.

[0090] At the stage of provisionally determining the floor number (preliminary calculation), it is not known that the work vehicle sensor device 12 on the 3rd floor is located on the 3rd floor. Therefore, to provisionally determine which floor each work vehicle sensor device 12 (hereinafter referred to as the target device) is located on, the value obtained by subtracting the measured atmospheric pressure observed by the target device from the measured atmospheric pressure observed by the reference device is multiplied by the standard altitude (correction value) of the floor where the fixed device is located, and then the height of the reference device is added. Target aircraft height (tentative calculation) = (reference aircraft pressure - target aircraft pressure) × fixed aircraft standard altitude + reference aircraft height

[0091] For example, if a target device transmits a measured atmospheric pressure value of 101753 Pa, the target device's height (provisional calculation) is calculated as follows. Target machine height (tentative calculation) = (101988 - 101753) × 0.083206704 + 0.65 =20.20357542 [m]

[0092] Therefore, the floor on which the target machine is located can be tentatively identified as the 3rd floor based on the management table 261 shown in Figure 7.

[0093] Next, the standard altitude (corrected value) corresponding to the provisionally identified floor is referenced, and the elevation is recalculated using the measured atmospheric pressure observed by the target machine and the said standard altitude (corrected value) to finally determine the floor on which the work vehicle sensor device 12 is located.

[0094] At the stage of final floor determination (recalculation), it is already tentatively determined that the target machine is located on the 3rd floor. Therefore, the final determination of which floor the target machine is located on is made by subtracting the measured atmospheric pressure observed at the target machine from the measured atmospheric pressure observed at the reference machine, multiplying this value by the standard altitude (correction value) of the floor where the target machine is located, and then adding the height of the reference machine. Target aircraft height (recalculated) = (Reference aircraft pressure - Target aircraft pressure) × Target aircraft standard altitude + Reference aircraft height

[0095] For example, if the target aircraft transmits a measured atmospheric pressure value of 101753 Pa as described above, the aircraft height (recalculated) will be calculated as follows. Target machine height (tentative calculation) = (101988 - 101753) × 0.082965518 + 0.65 =20.1468967 [m]

[0096] Therefore, the floor on which the target machine is located can be definitively determined to be the 3rd floor based on the management table 261 shown in Figure 7.

[0097] As described above, the execution of steps T21 to T24 on server 2 enables highly accurate determination of the floor on which each work vehicle sensor device 12 in building 4 is located. Furthermore, since steps T22 to T24 are executed repeatedly, the standard altitude offset value and standard altitude (correction value) in the management table 261 are constantly updated even if the atmospheric pressure changes moment by moment. Therefore, according to the above embodiment, it is possible to continue to determine the floor on which the work vehicle sensor device 12 is located with high accuracy even if the atmospheric pressure changes, and the possibility of misidentifying the floor on which the work vehicle 1 equipped with the work vehicle sensor device 12 is located can be suppressed as much as possible. The frequency at which steps T22 to T24 are repeatedly executed depends on the speed at which weather conditions change, but for example, every 60 minutes is preferable from the viewpoint of computational load.

[0098] (Processing flow for constructing the work vehicle management table 262) Figure 17 shows an example of the processing flow for the construction of the work vehicle management table 262 by Server 2. The following explanation will describe an example of the processing flow for the construction of the work vehicle management table 262 by Server 2, referring to Figure 17.

[0099] In T31, server 2 receives detected values ​​indicating atmospheric pressure and acceleration from the work vehicle sensor device 12, along with the vehicle name of work vehicle 1. In T32, the position acquisition unit 22 calculates the floor on which work vehicle 1 is located based on the detected values ​​indicating atmospheric pressure received in T31 and the management table 261. The management database 26 stores the calculated floor in the work vehicle management table 262, associating it with the vehicle name received in T31.

[0100] In T33, the operational status acquisition unit 23 determines the operational status of the work vehicle 1 based on the detected acceleration value received in T31. The operational status acquisition unit 23 stores the determined operational status in the work vehicle management table 262, associating it with the vehicle name received in T31.

[0101] In T34, Server 2 determines whether or not it has received a detected value from the work vehicle sensor device 12. If it has received a value (YES in T34), the process returns to T32, where the position of work vehicle 1 is determined, it is stored (T32), and the operating status of work vehicle 1 is determined and it is stored (T33). If it has not received a value (NO in T34), the process in T34 is repeated. In other words, in the processing flow of Figure 17, the position and operating status of work vehicle 1 in the work vehicle management table 262 are updated each time a detected value is received from the work vehicle sensor device 12.

[0102] (Effects of the embodiment) In this embodiment, the floor number of the work vehicle sensor device 12 is determined using measured atmospheric pressure values ​​and standard altitude correction values, thus minimizing the possibility of incorrectly identifying the floor number on which the work vehicle 1 equipped with the work vehicle sensor device 12 is located.

[0103] Furthermore, in this embodiment, the usage status confirmation screen 251 is grouped by company name and individual name. The usage status is output in a categorized manner. Therefore, according to this embodiment, it is possible to visually display in an easy-to-understand manner which worker is using the work vehicle 1.

[0104] In this embodiment, the work vehicle sensor device 12 is installed on the elevated work platform 11 of the work vehicle 1. Therefore, even if the work vehicle 1 is not moving, if the elevated work platform 11 is raised or lowered in accordance with the work, the acceleration sensor 1203 of the work vehicle sensor device 12 can detect the acceleration when the elevated work platform 11 is raised or lowered. In other words, according to this embodiment, the operating status of the work vehicle 1 can be obtained even when the work vehicle 1 is not moving. If it is not necessary to detect the raising or lowering of the elevated work platform 11, the work vehicle sensor device 12 may be installed in a location other than the elevated work platform 11 of the work vehicle 1, for example.

[0105] <First modified example of location identification process> The process for determining the position of the work vehicle 1 in the above embodiment may be modified as follows. In the process of step T25 in the above embodiment, when provisionally determining (preliminary calculation) the floor on which each work vehicle sensor device 12 is located, the standard height (correction value) of the floor on which the stationary equipment is located was used to provisionally determine the floor, but provisional determination may be performed by other methods.

[0106] Other provisional identification methods include, for example, methods that do not use standard altitude. For instance, one could provisionally determine the approximate floor number by estimating the difference between the measured atmospheric pressure observed by the reference instrument and the measured atmospheric pressure observed by the target instrument, and then use the standard altitude (corrected value) corresponding to the provisionally determined floor number to make the final determination of the floor number.

[0107] <Second variation of the location identification process> Furthermore, in the above embodiment, the floor on which the target unit is located was provisionally determined by subtracting the measured atmospheric pressure observed at the target unit from the measured atmospheric pressure observed at the reference unit, multiplying this value by the standard altitude (correction value) of the floor on which the fixed unit is located, and then adding the height of the reference unit. However, the provisional determination of the floor may also be performed using the standard altitude of other floors. For example, the floor on which the target unit is located may be provisionally determined by subtracting the measured atmospheric pressure observed at the target unit from the measured atmospheric pressure observed at the reference unit, multiplying this value by the standard altitude (correction value) of the floor on which the reference unit is located, and then adding the height of the reference unit.

[0108] <Third variation of the location identification process> Furthermore, in the above embodiment, the floor number on which the target machine is located was determined in a two-step process of provisional calculation and recalculation. However, for example, the floor number provisionally determined in the provisional calculation may be used as the final floor number on which the target machine is located. In this case, the recalculation process is unnecessary, thus reducing the processing load on server 2. Such modifications are suitable when the floor number provisionally determined in the provisional calculation does not impede the required accuracy in practical terms. Even with this modification, since calculations are performed using standard altitude, it is possible to determine the floor number with higher accuracy compared to other calculation methods that do not use standard altitude.

[0109] <Other variations> In this embodiment, the work vehicle sensor device 12 is equipped with two sensors: a barometric pressure sensor 1202 and an acceleration sensor 1203. However, the sensors equipped with the work vehicle sensor device 12 are not limited to these, and the work vehicle sensor device 12 may be equipped with other sensors. For example, the work vehicle sensor device 12 may further be equipped with a Global Positioning System (GPS) sensor. By equipping the work vehicle sensor device 12 with a GPS sensor, the server 2 can identify the location of the work vehicle 1 on the same floor (identify its horizontal position) in addition to identifying the floor where the work vehicle 1 is located (identify its position in the height direction) using the barometric pressure sensor 1202.

[0110] In this embodiment, the microcontroller 1201 of the work vehicle sensor device 12 suppresses the transmission of the detected value of the acceleration sensor 1203 to the server 2 if the detected value of the acceleration sensor 1203 is below a threshold. However, the microcontroller 1201 may transmit the detected value of the acceleration sensor 1203 to the server 2 even if it is below a threshold. In this case, the server 2 may determine that the work vehicle 1 is not operating if the received detected value of the acceleration sensor 1203 (or the acceleration indicated by the detected value) is below a threshold.

[0111] Furthermore, although the above embodiment determined the floor number of the work vehicle 1, it may also be used to determine the floor number of various work equipment other than work vehicles. Examples of various work equipment other than work vehicles include various types of equipment related to construction.

[0112] The usage request screen 241 may also include a time slot specification field for accepting requests to specify the time period during which work vehicle 1 will be used. The time slot may specify, for example, a specific start time and end time, or it may specify AM or PM. If the usage request screen 241 accepts time slot specifications, the time slot may also be displayed on the usage status confirmation screen.

[0113] A two-dimensional code may be used to register for the use of work vehicle 1. For example, a two-dimensional code containing information indicating the name of work vehicle 1 may be attached to each work vehicle 1. The tablet terminal 3 may then register for the use of work vehicle 1 by taking a picture of the two-dimensional code attached to work vehicle 1 with the camera 307.

[0114] In this embodiment, the work vehicle sensor device 12 and the reference sensor device 13 transmitted detection values ​​at set intervals, but the timing at which the work vehicle sensor device 12 and the reference sensor device 13 transmit detection values ​​is not limited to the set intervals. 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 there is sufficient remaining capacity in the battery 1204 of the work vehicle sensor device 12, there is no problem in transmitting detection values ​​at a high frequency; rather, it becomes possible to check the operating status of the work vehicle 1 and the position of the work vehicle 1 at desired timings.

[0115] In this embodiment, the operating status confirmation screen 252 displays operating status icons 253 that schematically represent the operating status of each work vehicle 1. The operating status icons 253 make it possible to visually understand the operating status of each work vehicle 1. By making it possible to understand the operating status of the work vehicles 1, it becomes possible to identify, for example, work vehicles 1 that are registered for use but not in operation, and this can be used to remind workers to register appropriately, such as not registering for use more than necessary. In addition, the operating status icons 253 may be displayed in a way that makes it easy to understand when a vehicle is registered for use but not in operation, for example, by displaying it in a different color.

[0116] In this embodiment, a tablet terminal 3 was used, but the portable information processing device used by the worker in the work equipment management system 100 is not limited to a 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 device.

[0117] The embodiments and variations disclosed above can be combined in any way.

[0118] <Computer-readable recording medium> A computer or other machine or device (hereinafter referred to as "computer, etc.") can perform any of the above functions. The information processing program to be displayed can be recorded on a recording medium that can be read by a computer or other device. Then, by having a computer or other device read and execute the program on this recording medium, the function can be provided.

[0119] Here, a recording medium that can be read by a computer refers to a recording medium that stores information such as data and programs through electrical, magnetic, optical, mechanical, or chemical means and can be read by a computer. Examples of such recording media that can be removed from a computer include flexible disks, magneto-optical disks, Compact Disc Read Only Memory (CD-ROM), Compact Disc-Recordable (CD-R), 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. Recording media that are fixed to a computer include hard disks and ROMs. [Explanation of Symbols]

[0120] 1. Work vehicles 2. Server 3. Tablet devices 4. Building 11. Elevated work platform 12. Work vehicle sensor device 13. Reference sensor device 21. Calculation Department 22...Position acquisition unit 23. Operation Status Acquisition Unit 24. User Reception Department 25. Output section 26. Management Database N1 ··1st Wireless Link N2 ··2nd Wireless Link 100 Work Equipment Management System 201,301··CPU 202,302··Main memory 203,303··Auxiliary storage unit 204, 1205, 1303 ·· 1st Communications Department 205,304 ··2nd Communications Department 241. Application 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 Management Table 305 ··Display 306 ··Touch panel 307 ··Camera 1201, 1301... Microcontroller 1202, 1302... barometric pressure sensor 1203 ··Accelerometer 1204 Battery 1205 Switch 2411 ··Input field for vehicle name 2412 ··Entering the name of the service provider 2413 ··User name input field 2414 ··Comment section 2415 ··Register button 2511 ··Building image 2512 ·· Hierarchical Image 2513 Usage Status Table

Claims

1. A work equipment management system for managing multiple work equipment used in work within a building having a hierarchical structure, The system includes a processing unit that identifies the floor on which each of the multiple pieces of work equipment is located, based on the equipment pressure, which is the value detected by a pressure sensor installed on each of the multiple pieces of work equipment, and the reference pressure, which is the value detected by a pressure sensor installed at a predetermined location within the building. The aforementioned processing unit, A first process is performed in which, after calculating a first related value for each floor, which is a value related to the theoretical atmospheric pressure of each floor of the building based on a general formula that expresses the relationship between atmospheric pressure and altitude, the relationship between the actual height difference between each floor and the predetermined location and the first related value is calculated for each floor as the theoretical standard altitude, When the height of the location where the predetermined floor pressure is located is known and the pressure sensor is located on a predetermined floor different from the floor of the predetermined location is located, a second process is performed to calculate the relationship between the height of the location where the predetermined floor pressure is obtained and a second related value which is a value related to the predetermined floor pressure, using the actual standard altitude for the predetermined floor. A third process for calculating a corrected standard altitude based on a comparison of the theoretical standard altitude and the actual standard altitude at the predetermined floor, A fourth process is performed to determine the floor on which each of the plurality of work devices is located, based on the aforementioned equipment pressure and the corrected standard altitude. Work equipment management system.

2. The aforementioned processing unit, In the first process described above, the theoretical pressure difference for each floor of the building is calculated by subtracting the reference pressure from the theoretical pressure for each floor of the building based on a general formula representing the relationship between atmospheric pressure and altitude. Then, the difference in actual height between each floor and the predetermined location is divided by the theoretical pressure difference to obtain the theoretical standard altitude for each floor, which is the height per unit pressure. In the second process described above, after obtaining the atmospheric pressure of the predetermined floor, the actual pressure difference is calculated by subtracting the reference atmospheric pressure from the atmospheric pressure of the predetermined floor, and then the value obtained by dividing the height of the location where the atmospheric pressure of the predetermined floor is obtained by the actual pressure difference is calculated for the predetermined floor as the actual standard altitude, which is the height per unit pressure. In the third process described above, the theoretical standard altitude and the actual standard altitude at the predetermined floor After calculating the difference as an offset value, the corrected standard altitude is calculated by correcting the theoretical standard altitude with the offset value. A work equipment management system according to claim 1.

3. In the fourth process, the processing unit performs a preliminary determination of the floor on which each of the multiple pieces of work equipment is located, based on the altitude calculated by multiplying the difference value obtained by subtracting the reference pressure from the equipment pressure by the corrected standard altitude or the actual standard altitude on the predetermined floor. A work equipment management system according to claim 2.

4. In the fourth process, the processing unit performs a final determination of the floor on which each of the multiple pieces of work equipment is located, based on the altitude calculated by multiplying the difference obtained by subtracting the reference pressure from the equipment pressure by the corrected standard altitude on the provisionally determined floor. A work equipment management system according to claim 3.

5. The aforementioned designated location is a floor near the ground level of the building. A work equipment management system according to any one of claims 1 to 4.

6. The aforementioned work equipment is an aerial work platform equipped with a height-adjustable work platform, The aforementioned equipment pressure is the value detected by the pressure sensor installed on the elevated work platform. A work equipment management system according to claim 1.

7. A method for managing multiple pieces of work equipment used in work within a building having a hierarchical structure, A computer identifies the floor on which each of the multiple pieces of work equipment is located, based on the equipment pressure, which is the value detected by a pressure sensor installed on each of the multiple pieces of work equipment, and the reference pressure, which is the value detected by a pressure sensor installed at a predetermined location within the building. A first process is performed in which, after calculating a first related value for each floor, which is a value related to the theoretical atmospheric pressure of each floor of the building based on a general formula that expresses the relationship between atmospheric pressure and altitude, the relationship between the actual height difference between each floor and the predetermined location and the first related value is calculated for each floor as the theoretical standard altitude, When the height of the location where the predetermined floor pressure is located is known and the pressure sensor is located on a predetermined floor different from the floor of the predetermined location is located, a second process is performed to calculate the relationship between the height of the location where the predetermined floor pressure is obtained and a second related value which is a value related to the predetermined floor pressure, using the actual standard altitude for the predetermined floor. A third process for calculating a corrected standard altitude based on a comparison of the theoretical standard altitude and the actual standard altitude at the predetermined floor, A fourth process is performed to determine the floor on which each of the plurality of work devices is located, based on the aforementioned equipment pressure and the corrected standard altitude. Work equipment management method.

8. A work equipment management program for managing multiple work equipment used in work within a building having a hierarchical structure, Based on the equipment pressure, which is the value detected by the pressure sensors installed in each of the plurality of work devices, and the reference pressure, which is the value detected by the pressure sensors installed at predetermined locations within the building, a computer is used to identify the floor on which each of the plurality of work devices is located. A first process is performed in which, after calculating a first related value for each floor, which is a value related to the theoretical atmospheric pressure of each floor of the building based on a general formula that expresses the relationship between atmospheric pressure and altitude, the relationship between the actual height difference between each floor and the predetermined location and the first related value is calculated for each floor as the theoretical standard altitude, The height of the installation location is known and the air is located on a different floor from the floor of the aforementioned predetermined location. When the atmospheric pressure of a predetermined floor, which is the value detected by the pressure sensor, is obtained, a second process is performed to calculate the relationship between the height of the location where the atmospheric pressure of the predetermined floor is obtained and a second related value, which is a value related to the atmospheric pressure of the predetermined floor, using the actual standard altitude for the predetermined floor. A third process for calculating a corrected standard altitude based on a comparison of the theoretical standard altitude and the actual standard altitude at the predetermined floor, A fourth process is performed to determine the floor on which each of the plurality of work devices is located, based on the aforementioned equipment pressure and the corrected standard altitude. A program for managing work equipment.

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