Program and data processing method

Abstract

To provide a program capable of accurately setting, in a controller, a minimum usage discharge capacity or a minimum usage discharge flow rate in a reference rotation frequency, of a hydraulic pump.SOLUTION: Provided is a program which is installed in a processor 65 of a portable terminal 6, the program forcing the processor to acquire, when a symbol 21 displayed on a front face of a hydraulic pump 2 is taken by a camera 63, actual measurement data of the hydraulic pump 2 and stores the data in a memory 61. The processor 65 also stores, in the memory 61, a minimum usage discharge flow rate and a reference rotation frequency inputted by an input screen on a touch screen 62. Further, the processor 65, when a data transmission button on the touch screen 62 is tapped, forces a wireless communication module 64 to transmit the actual measurement data, the minimum usage discharge flow rate and the reference rotation frequency stored in the memory 61 to a controller 4 for the hydraulic pump 2 or a wireless LAN router 5 connected to the controller 4.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a program and a data processing method for a mobile terminal capable of communicating via wireless communication with a controller for a hydraulic pump. [Background technology]

[0002] In machines such as construction machines and industrial machines, hydraulic pumps that supply hydraulic fluid to hydraulic actuators may be adopted that have a discharge capacity, which is the amount of fluid discharged per rotation, that increases as the command current increases. For example, see Patent Document 1. In this case, the hydraulic pump is controlled by a controller so that the discharge capacity of the hydraulic pump increases as the operating speed of the hydraulic actuator increases.

[0003] Specifically, an operation signal corresponding to the amount of operation of an operating device for operating the hydraulic actuator is input to the controller. The operating device is for determining the operating speed of the hydraulic actuator based on the amount of operation of the operating device. A command current corresponding to the operation signal is sent from the controller to the hydraulic pump. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-210974 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, hydraulic pumps are required to have different minimum discharge capacities depending on the machines in which they are installed. If the hydraulic pump has a discharge capacity that increases as the command current increases, it is possible to electrically set a minimum usable discharge capacity that is equal to or greater than the mechanical minimum capacity. By setting the minimum usable discharge capacity in this way, the same hydraulic pump can be used for machines requiring different minimum discharge capacities.

[0006] However, hydraulic pumps have individual variations in Iq characteristics, which are the relationship between command current and displacement, so if the minimum usable current corresponding to the minimum usable displacement is determined based on the design performance characteristics, the minimum usable displacement may deviate from the desired value.

[0007] For hydraulic pumps, a minimum discharge flow rate at a reference rotation speed may be required instead of a minimum discharge capacity. In this case, it is possible to electrically set the minimum usable discharge flow rate at the reference rotation speed in the same manner as described above. However, if the minimum usable current corresponding to the minimum usable discharge flow rate is determined based on the design performance characteristics, the minimum usable discharge flow rate may deviate from the value to be set for the same reason as described above.

[0008] Therefore, an object of the present disclosure is to provide a program and a data processing method that enable a controller to accurately set the minimum usable discharge capacity or the minimum usable discharge flow rate at a reference rotation speed of a hydraulic pump. [Means for solving the problem]

[0009] From a first aspect, the present disclosure provides a program for a mobile terminal including a processor, a memory, a wireless communication module, a touch screen, and a camera, the program causing the processor to acquire, when a symbol displayed on a surface of a hydraulic pump, whose discharge capacity increases as a command current increases, an image of the symbol displayed on the surface of the hydraulic pump is captured by the camera, actual measurement data indicating an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data indicating a predetermined rotation speed and an actual relationship between the command current and the discharge flow rate of the hydraulic pump at the predetermined rotation speed, and store the acquired data in the memory, causing the touch screen to display an input screen for a minimum usable discharge flow rate of the hydraulic pump and a reference rotation speed for defining the minimum usable discharge flow rate, storing the minimum usable discharge flow rate and the reference rotation speed inputted on the input screen in the memory, displaying a virtual data transmission button on the touch screen, and causing the wireless communication module to transmit the actual measurement data, the minimum usable discharge flow rate, and the reference rotation speed stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller when the data transmission button is tapped.

[0010] From a second aspect, the present disclosure provides a program for a mobile terminal including a processor, a memory, a wireless communication module, a touch screen, and a camera, the program causing the processor to acquire, when a symbol displayed on a surface of a hydraulic pump, whose discharge capacity increases as a command current increases, by the camera, obtain actual measurement data indicating an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data indicating a predetermined rotation speed and an actual relationship between the command current and the discharge flow rate of the hydraulic pump at the predetermined rotation speed, and store the acquired data in the memory; display an input screen for a minimum usable discharge capacity of the hydraulic pump on the touch screen; store the minimum usable discharge capacity inputted on the input screen in the memory; display a virtual data transmission button on the touch screen; and, when the data transmission button is tapped, cause the wireless communication module to transmit the actual measurement data and the minimum usable discharge capacity stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

[0011] From a third aspect, the present disclosure provides a program for a mobile terminal including a processor, a memory, a wireless communication module, a touch screen, and a camera, the program causing the processor to obtain, when a symbol displayed on a surface of a hydraulic pump, in which a discharge capacity increases as a command current increases, an image of the symbol is captured by the camera, actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and a discharge flow rate of the hydraulic pump at the predetermined rotation speed, and store the obtained data in the memory, and displaying an input screen for a minimum usable discharge flow rate of the hydraulic pump and a reference rotation speed for defining the minimum usable discharge flow rate. The present invention provides a program that displays the actual measurement data on the touch screen, stores the minimum usable discharge flow rate and the reference rotation speed input on the input screen in the memory, determines a minimum usable current corresponding to the input minimum usable discharge flow rate using the actual measurement data, stores the determined minimum usable current in the memory, displays a virtual data transmission button on the touch screen, and, when the data transmission button is tapped, causes the wireless communication module to transmit the actual measurement data and the minimum usable current stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

[0012] From a fourth aspect, the present disclosure provides a program for a mobile terminal including a processor, a memory, a wireless communication module, a touch screen, and a camera, the program causing the processor to, when a symbol displayed on a surface of a hydraulic pump, in which a discharge capacity increases as a command current increases, be captured by the camera, obtain actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and a discharge flow rate of the hydraulic pump at the predetermined rotation speed, and store the data in the memory; and display an input screen for a minimum usable discharge capacity of the hydraulic pump on the touch screen. the minimum use current corresponding to the inputted minimum use discharge volume using the actual measurement data, storing the determined minimum use current in the memory, displaying a virtual data transmission button on the touch screen, and causing the wireless communication module to transmit the actual measurement data and the minimum use current stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller when the data transmission button is tapped.

[0013] From a fifth aspect, the present disclosure provides a data processing method using a mobile terminal, the data processing method including: when a symbol displayed on a surface of a hydraulic pump, in which a discharge capacity increases as a command current increases, is captured by a camera of the mobile terminal, actual measurement data indicating an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data indicating a predetermined rotation speed and an actual relationship between the command current and the discharge flow rate of the hydraulic pump at the predetermined rotation speed, acquiring and storing in a memory of the mobile terminal; displaying on a touch screen of the mobile terminal an input screen for a minimum usable discharge flow rate of the hydraulic pump and a reference rotation speed for defining the minimum usable discharge flow rate; storing in the memory the minimum usable discharge flow rate and the reference rotation speed inputted on the input screen; displaying on the touch screen a virtual data transmission button; and when the data transmission button is tapped, causing a wireless communication module of the mobile terminal to transmit the actual measurement data, the minimum usable discharge flow rate, and the reference rotation speed stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

[0014] From a sixth aspect, the present disclosure provides a data processing method using a mobile terminal, the data processing method including: when a symbol displayed on a surface of a hydraulic pump, whose discharge capacity increases as a command current increases, is captured by a camera of the mobile terminal, acquiring actual measurement data indicating an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data indicating a predetermined rotation speed and an actual relationship between the command current and the discharge flow rate of the hydraulic pump at the predetermined rotation speed, and storing the acquired data in a memory of the mobile terminal; displaying an input screen for a minimum usable discharge capacity of the hydraulic pump on a touch screen of the mobile terminal; storing the minimum usable discharge capacity inputted on the input screen in the memory; displaying a virtual data transmission button on the touch screen; and, when the data transmission button is tapped, causing a wireless communication module of the mobile terminal to transmit the actual measurement data and the minimum usable discharge capacity stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

[0015] From a seventh aspect, the present disclosure provides a data processing method using a mobile device, the method comprising the steps of: acquiring, when a symbol displayed on a surface of a hydraulic pump in which a discharge capacity increases as a command current increases, using a camera of the mobile device, actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and a discharge flow rate of the hydraulic pump at the predetermined rotation speed, and storing the acquired data in a memory of the mobile device; displaying, on a touch screen of the mobile device, an input screen for inputting a minimum usable discharge flow rate of the hydraulic pump and a reference rotation speed for defining the minimum usable discharge flow rate; The present invention provides a data processing method which stores the minimum usable discharge flow rate and the reference rotation speed input on the input screen in the memory, determines a minimum usable current corresponding to the input minimum usable discharge flow rate using the actual measurement data, stores the determined minimum usable current in the memory, displays a virtual data transmission button on the touch screen, and, when the data transmission button is tapped, causes a wireless communication module of the portable terminal to transmit the actual measurement data and the minimum usable current stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

[0016] From an eighth aspect, the present disclosure provides a data processing method using a mobile device, the method comprising the steps of: acquiring, when a symbol displayed on a surface of a hydraulic pump, in which a discharge capacity increases as a command current increases, using a camera of the mobile device, actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and a discharge flow rate of the hydraulic pump at the predetermined rotation speed, and storing the acquired data in a memory of the mobile device; displaying an input screen for inputting a minimum usable discharge capacity of the hydraulic pump on a touch screen of the mobile device; the determined minimum usable discharge volume in the memory, and using the actual measurement data, determining a minimum usable current corresponding to the input minimum usable discharge volume, storing the determined minimum usable current in the memory, displaying a virtual data transmission button on the touch screen of the mobile terminal, and when the data transmission button is tapped, causing a wireless communication module of the mobile terminal to transmit the actual measurement data and the minimum usable current stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller. Effect of the Invention

[0017] According to the present disclosure, a program and a data processing method are provided that enable a controller to accurately set a minimum usable discharge capacity or a minimum usable discharge flow rate at a reference rotation speed of a hydraulic pump. [Brief description of the drawings]

[0018] [Figure 1] 1 is a schematic configuration diagram of a pump system including a mobile terminal on which a program according to a first embodiment is installed. [Diagram 2] 2A to 2D are diagrams showing display screens of a touch screen. [Diagram 3] 4 is a graph showing the relationship between a command current and a discharge capacity of a hydraulic pump. [Figure 4] FIG. 13 is a diagram showing a display screen of a touch screen in a first modified example of the first embodiment. [Diagram 5] FIG. 11 is a schematic configuration diagram of a pump system including a mobile terminal on which a program of a second modified example is installed. [Figure 6] 6A to 6D are diagrams showing display screens of a touch screen in a third modified example. [Figure 7] 7A to 7C are diagrams showing display screens of a touch screen in a fourth modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] First Embodiment 1 shows a pump system 1 including a mobile terminal 6 on which a program according to a first embodiment is installed. That is, the program is a program for the mobile terminal 6.

[0020] In addition to the mobile terminal 6, the pump system 1 includes a hydraulic pump 2 and a controller 4 for the hydraulic pump 2. The mobile terminal 6 is capable of communicating with the controller 4 via wireless communication.

[0021] In this embodiment, the wireless LAN router 5 is connected to the controller 4 by a wired connection, and the mobile terminal 6 performs wireless communication with the wireless LAN router 5. However, the controller 4 may include a wireless communication module, and the mobile terminal 6 may perform direct wireless communication with the controller 4.

[0022] The hydraulic pump 2 is a variable displacement pump. The hydraulic pump 2 is driven by a prime mover. The prime mover may be an engine or an electric motor. In this embodiment, the hydraulic pump 2 is an axial piston pump such as a swash plate pump or a bent axis pump. However, the hydraulic pump 2 may be another type of pump such as a vane pump.

[0023] A discharge capacity q, which is the amount of discharge per rotation of the hydraulic pump 2, is changed by a regulator 3 provided in the hydraulic pump 2. A command current I is sent to the regulator 3 from a controller 4. For example, in the case where the hydraulic pump 2 is a swash plate pump, the regulator 3 may be one that electrically changes the hydraulic pressure acting on a servo piston connected to the swash plate of the hydraulic pump 2, or may be an electric actuator connected to the swash plate of the hydraulic pump 2.

[0024] The hydraulic pump 2 supplies hydraulic fluid to the hydraulic actuator. An actuator operation signal corresponding to the amount of operation of an operating device for operating the hydraulic actuator is input to the controller 4. The controller 4 outputs a command current I corresponding to the actuator operation signal to the regulator 3 so that the discharge capacity q of the hydraulic pump 2 increases as the amount of operation of the operating device increases. Note that if the machine on which the hydraulic pump 2 and the hydraulic actuator are mounted is an unmanned machine, the operating device may be omitted and the controller 4 may create the actuator operation signal itself based on an image captured by a camera, etc.

[0025] The discharge capacity q of the hydraulic pump 2 varies between a mechanical minimum capacity qmin and a maximum capacity qmax according to the command current I. The Iq characteristic, which is the relationship between the command current I and the discharge capacity q, is as shown in Fig. 3. When the command current I is Ia or less, the discharge capacity q is the minimum capacity qmin, when the command current I is Ib or more, the discharge capacity q is the maximum capacity qmax, and when the command current I is between Ia and Ib, the larger the command current I is, the larger the discharge capacity q becomes.

[0026] Returning to Fig. 1, a symbol 21 is displayed on the surface of the hydraulic pump 2. Regarding the display of the symbol 21 on the surface of the hydraulic pump 2, the symbol 21 may be printed on a plate such as a nameplate or a display plate, and the plate may be attached to the surface of the hydraulic pump 2. Alternatively, the symbol 21 may be printed directly on the surface of the hydraulic pump 2.

[0027] In this embodiment, the symbol 21 stores actual measurement data indicating the actual Iq characteristic of the hydraulic pump 2. The actual Iq characteristic is a test result obtained when a performance confirmation test is conducted on the hydraulic pump 2. For example, the symbol 21 is a matrix type two-dimensional code (QR Code (registered trademark)). However, the symbol 21 may also be a tag such as an IC (Integrated Circuit) tag or an RFID (Radio Frequency Identification) tag.

[0028] The mobile terminal 6 includes a memory 61, a touch screen 62, a camera 63, a wireless communication module 64, and a processor 65. These elements are connected to each other by a bus 66. For example, the mobile terminal 6 is a tablet terminal or a smartphone.

[0029] The functions of the elements disclosed herein can be performed using circuits or processing circuits, including general purpose processors, special purpose processors, integrated circuits, Application Specific Integrated Circuits (ASICs), conventional circuits, and / or combinations thereof, configured or programmed to perform the disclosed functions. Processors are considered processing circuits or circuits because they include transistors and other circuits. In this disclosure, a circuit, unit, or means is hardware that performs the recited functions or hardware that is programmed to perform the recited functions. The hardware may be hardware disclosed herein or other known hardware that is programmed or configured to perform the recited functions. In the case where the hardware is a processor, which is considered a type of circuit, the circuit, means, or unit is a combination of hardware and software, and the software is used to configure the hardware and / or the processor.

[0030] The processor 65 of the mobile terminal 6 performs the following operations in accordance with the program stored in the memory 61. In this way, a data processing method using the mobile terminal 6 is executed.

[0031] When the user taps on the program icon representing the program displayed on the touch screen 62, the processor 65 displays the initial screen 7 as shown in Fig. 2A on the touch screen 62. Note that all of the following tapping operations are also performed by the user. The initial screen 7 includes a virtual Qmin input button 71, a symbol reading button 72, and a data transmission button 73.

[0032] The Qmin input button 71 is for displaying an input screen 8 for inputting the minimum usable discharge flow rate Qmin and the reference rotation speed Nr as shown in Fig. 2B. The reference rotation speed Nr is for defining the minimum usable discharge flow rate Qmin.

[0033] 3, the minimum usable discharge capacity q0 obtained by dividing the minimum usable discharge flow rate Qmin by the reference rotation speed Nr defines the lower limit of the usable range of the discharge capacity q when the hydraulic pump 2 is mounted on a machine. The minimum usable discharge capacity q0 may be the same as the mechanical minimum capacity qmin, or may be greater than the minimum capacity qmin.

[0034] When the minimum usable discharge capacity q0 is the same as the mechanical minimum capacity qmin, the usable range of the discharge capacity q when the hydraulic pump 2 is mounted on the machine is range A in Fig. 3, and the usable range of the command current I is range C in Fig. 3. On the other hand, when the minimum usable discharge capacity q0 is larger than the mechanical minimum capacity qmin, the usable range of the discharge capacity q when the hydraulic pump 2 is mounted on the machine is range B in Fig. 3, and the usable range of the command current I is range D in Fig. 3.

[0035] When the Qmin input button 71 is tapped on the initial screen 7, the processor 65 displays the input screen 8 on the touch screen 62. The input screen 8 includes a first input frame 81 for inputting the minimum use discharge flow rate Qmin and a second input frame 82 for inputting the reference rotation speed Nr. In this embodiment, both the first input frame 81 and the second input frame 82 are pull-down type, that is, frames that allow a user to select an option from among predetermined options. The pull-down type may be one in which a set of multiple digits can be selected, or one in which a digit is selected one at a time.

[0036] When the first input frame 81 is tapped on the input screen 8, the processor 65 displays a selection frame 83 in which multiple numerical values ​​are listed as the discharge flow rate below the first input frame 81, as shown in Fig. 2C. When a specific numerical value is selected from the selection frame 83, the processor 65 displays the selected numerical value in the first input frame 81 and stores the selected numerical value in the memory 61 as the input minimum usable discharge flow rate Qmin. After that, when the virtual back button 80 is tapped, the processor 65 returns the display screen of the touch screen 62 to the input screen 8 shown in Fig. 2B.

[0037] When the second input frame 82 is tapped on the input screen 8, the processor 65 displays a selection frame 84 below the second input frame 82, in which one or more numerical values ​​are listed for each digit as the number of rotations, as shown in FIG. 2D. However, the selection frame 84 may list a plurality of three-digit or four-digit numerical values ​​as the number of rotations. When a specific combination of numerical values ​​is selected in the selection frame 84, the processor 65 displays the selected combination of numerical values ​​in the second input frame 82 and stores the selected combination of numerical values ​​in the memory 61 as the input reference number of rotations Nr. After that, when the virtual back button 80 is tapped, the processor 65 returns the display screen of the touch screen 62 to the input screen 8 shown in FIG. 2B.

[0038] When the virtual back button 80 on the input screen 8 is tapped, the processor 65 returns the display screen of the touch screen 62 to the initial screen 7 shown in FIG. 2A.

[0039] The symbol reading button 72 is for starting reading of the symbol 21 displayed on the surface of the hydraulic pump 2. When the symbol reading button 72 is tapped, the processor 65 starts the camera 63.

[0040] When the camera 63 comes into focus on the symbol 21, it automatically captures the image of the symbol 21. When the image of the symbol 21 is captured by the camera 63, the processor 65 acquires the actual measurement data of the hydraulic pump 2 stored in the symbol 21, and stores the acquired actual measurement data in the memory 61. Acquiring the characteristic data stored in the symbol 21 by capturing an image of the symbol 21 is the reading of the symbol 21. Note that, as a sequence, the minimum usable discharge flow rate Qmin and the reference rotation speed Nr may be input after the reading of the symbol 21.

[0041] The data transmission button 73 is for transmitting the actual measurement data, minimum usable discharge flow rate Qmin, and reference rotation speed Nr of the hydraulic pump 2 stored in the memory 61 to the wireless LAN router 5. When the data transmission button 73 is tapped after reading of the symbol 21 is completed, the processor 65 causes the wireless communication module 64 to transmit the actual measurement data, minimum usable discharge flow rate Qmin, and reference rotation speed Nr of the hydraulic pump 2 stored in the memory 61 to the wireless LAN router 5. As a result, the actual measurement data, minimum usable discharge flow rate Qmin, and reference rotation speed Nr of the hydraulic pump 2 are input to the controller 4 via the wireless LAN router 5.

[0042] The controller 4 electronically calibrates the variation due to individual differences in the Iq characteristics of the hydraulic pump 2. Specifically, the controller 4 uses the input actual measurement data to adjust the command current I output to the regulator 3 so as to obtain a set discharge capacity corresponding to the actuator operation signal.

[0043] Furthermore, in this embodiment, the controller 4 uses the input measured data to determine the minimum usable current I0 corresponding to the minimum usable discharge flow rate Qmin by using a mathematical method such as linear interpolation. In this embodiment, since the measured data is Iq characteristics, the controller 4 divides the minimum usable discharge flow rate Qmin by the reference rotation speed Nr to calculate the minimum usable discharge capacity q0, and determines the minimum usable current I0 corresponding to the minimum usable discharge capacity q0 using the measured data showing the actual Iq characteristics.

[0044] As described above, in the program of this embodiment, the controller 4 can determine the minimum usable current I0 corresponding to the minimum usable discharge flow rate Qmin by using the actual measurement data. Therefore, the minimum usable discharge flow rate Qmin at the reference rotation speed Nr of the hydraulic pump 2 can be accurately set in the controller 4.

[0045] <Modification> As shown in FIG. 4, on the initial screen 7, "Qmin input" may be displayed instead of the Qmin input button 71, and a first input frame 81 and a second input frame 82 may be adopted, so that the initial screen 7 also serves as the input screen 8.

[0046] If the controller 4 includes a wireless communication module, the processor 65 may cause the wireless communication module 64 to transmit the actual measurement data, the minimum use discharge flow rate Qmin, and the reference rotation speed Nr of the hydraulic pump 2 stored in the memory 61 to the controller 4.

[0047] The symbol 21 may store destination information of the actual measurement data instead of the actual measurement data of the hydraulic pump 2. The destination information is, for example, an Internet Protocol (IP) address of a server as the destination, or a Uniform Resource Locator (URL) of a specific layer of the server. The symbol 21 storing the destination information may be a two-dimensional code or a tag as in the above embodiment, or may be a character string.

[0048] 5, in the case where the symbol 21 stores the storage destination information, a program installed in the mobile terminal 6 causes the processor 65 to acquire the actual measurement data of the hydraulic pump 2 from the server 92 specified by the storage destination information stored in the symbol 21 via the network 91 when the symbol 21 is imaged by the camera 63. The subsequent processing is the same as in the above embodiment.

[0049] Even when the symbol 21 stores information on the storage destination of the characteristic data, the controller 4 may include a wireless communication module, and the processor 65 may cause the wireless communication module 64 to transmit the actual measurement data, the minimum usable discharge flow rate Qmin, and the reference rotation speed Nr of the hydraulic pump 2 to the controller 4.

[0050] The input screen 8 for the minimum use discharge flow rate Qmin and the reference rotation speed Nr can be modified in various ways. For example, when the hydraulic pump 2 is mounted on a hydraulic excavator, as shown in Fig. 6A, the initial screen 7 displays the explanation "Enter excavator model or pump model" for the Qmin input button 71, and when the Qmin input button 71 is tapped, the processor 65 displays the input screen 8 shown in Fig. 6B on the touch screen 62.

[0051] In this modified example, the input screen 8 includes an excavator model input frame 85 and a pump model input frame 86. Both the excavator model input frame 85 and the pump model input frame 86 are for inputting the minimum use discharge flow rate Qmin and the reference rotation speed Nr. Moreover, both the excavator model input frame 85 and the pump model input frame 86 are pull-down type frames.

[0052] When the shovel model input frame 85 is tapped on the input screen 8, the processor 65 displays a selection frame 87 in which a plurality of shovel models are listed on the touch screen 62, as shown in FIG. 6C. The memory 61 stores information on the minimum usable discharge flow rate Qmin and the reference rotation speed Nr associated with each shovel model. When a specific shovel model is selected from the selection frame 87, the processor 65 stores the minimum usable discharge flow rate Qmin and the reference rotation speed Nr corresponding to the selected shovel model in the memory 61 as the input minimum usable discharge flow rate Qmin and the reference rotation speed Nr. Thereafter, when the virtual back button 80 is tapped, the processor 65 returns the display screen of the touch screen 62 to the input screen 8 shown in FIG. 6B.

[0053] Alternatively, when the pump model input frame 86 is tapped on the input screen 8, the processor 65 displays a selection frame 88 in which a plurality of pump models are listed on the touch screen 62 as shown in FIG. 6D. The memory 61 stores information on the minimum usable discharge flow rate Qmin and the reference rotation speed Nr associated with each pump model. When a specific pump model is selected from the selection frame 88, the processor 65 stores the minimum usable discharge flow rate Qmin and the reference rotation speed Nr corresponding to the selected pump model as the input minimum usable discharge flow rate Qmin and the reference rotation speed Nr in the memory 61. Thereafter, when the virtual back button 80 is tapped, the processor 65 returns the display screen of the touch screen 62 to the input screen 8 shown in FIG. 5B.

[0054] When the virtual back button 80 on the input screen 8 is tapped, the processor 65 returns the display screen of the touch screen 62 to the initial screen 7 shown in FIG. 5A.

[0055] Alternatively, as shown in Figures 7A to 7C, "Qmin input" may be displayed instead of the Qmin input button 71 on the initial screen 7, and an excavator model input frame 85 and a pump model input frame 86 may be adopted, so that the initial screen 7 also serves as the input screen 8.

[0056] <Second embodiment> Next, a program for the second embodiment will be described. The program of this embodiment differs from the program of the first embodiment only in that the minimum usable discharge capacity q0 is input instead of the minimum usable discharge flow rate Qmin and the reference rotation speed Nr. In this embodiment, the same components as those in the first embodiment are given the same reference numerals, and duplicated explanations will be omitted.

[0057] The processor 65 of the mobile terminal 6 in which the program of this embodiment is installed displays a virtual q0 input button in place of the Qmin input button 71 on the initial screen 7, and when the q0 input button is tapped, displays an input screen for the minimum use discharge volume q0 on the touch screen 62. In addition, when the minimum use discharge volume q0 is input on the input screen, the processor 65 stores the input minimum use discharge volume q0 in the memory 61.

[0058] As in the first embodiment, a symbol 21 storing actual measurement data indicating the actual Iq characteristics of the hydraulic pump 2 is displayed on the surface of the hydraulic pump 2. The symbol 21 is a two-dimensional code or a tag.

[0059] When the symbol reading button 72 on the initial screen 7 is tapped, the processor 65 starts the camera 63. When the camera 63 focuses on the symbol 21, it automatically captures an image of the symbol 21. When the symbol 21 is captured by the camera 63, the processor 65 obtains the actual measurement data of the hydraulic pump 2 stored in the symbol 21, and stores the obtained actual measurement data in the memory 61.

[0060] When the data transmission button 73 on the initial screen 7 is tapped, the processor 65 causes the wireless communication module 64 to transmit the actual measurement data and the minimum usable discharge capacity q0 of the hydraulic pump 2 stored in the memory 61 to the wireless LAN router 5.

[0061] In this embodiment, the controller 4 can determine the minimum usable current I0 corresponding to the minimum usable discharge capacity q0 by using measured data indicating the actual Iq characteristic. Therefore, the minimum usable discharge capacity q0 of the hydraulic pump 2 can be accurately set in the controller 4.

[0062] <Modification> In the case where the controller 4 includes a wireless communication module, the processor 65 may cause the wireless communication module 64 to transmit the actual measurement data and the minimum usable discharge capacity q0 of the hydraulic pump 2 stored in the memory 61 to the controller 4.

[0063] The symbol 21 may store destination information for storing the actual measurement data instead of the actual measurement data of the hydraulic pump 2. The destination information is, for example, an IP address of a server where the data is to be stored, or a URL of a specific layer of the server. The symbol 21 storing the destination information may be a two-dimensional code or a tag, or may be a character string.

[0064] When the symbol 21 stores destination information, as shown in FIG. 5, a program installed on the mobile terminal 6 causes the processor 65 to obtain actual measurement data of the hydraulic pump 2 via the network 91 from the server 92 specified by the destination information stored in the symbol 21 when the symbol 21 is captured by the camera 63.

[0065] Even when the symbol 21 stores information on the storage destination of the characteristic data, the controller 4 may include a wireless communication module, and the processor 65 may cause the wireless communication module 64 to transmit the actual measurement data and the minimum usable discharge volume q0 of the hydraulic pump 2 to the controller 4.

[0066] <Other embodiments> The present disclosure is not limited to the above-described embodiments, and various modifications are possible without departing from the gist of the present disclosure.

[0067] For example, the actual measurement data may not indicate the actual Iq characteristics, but may indicate the actual relationship between a predetermined rotation speed Np and the command current I and discharge flow rate Q of the hydraulic pump 2 at the predetermined rotation speed Np, i.e., the actual IQ characteristics.

[0068] In the first embodiment, when the actual measurement data indicates a predetermined rotation speed Np and an actual IQ characteristic at the predetermined rotation speed Np, the controller 4 may multiply the minimum usable discharge flow rate Qmin by Np / Nr to calculate a converted flow rate, and use the actual measurement data to determine the minimum usable current I0 corresponding to the converted flow rate.

[0069] In the second embodiment, when the actual measurement data indicates a predetermined rotation speed Np and the actual IQ characteristics at the predetermined rotation speed Np, the controller 4 may multiply the minimum usable discharge capacity q0 by the predetermined rotation speed Np to calculate the minimum usable discharge flow rate Qmin at the predetermined rotation speed Np, and determine the minimum usable current I0 corresponding to the minimum usable discharge flow rate Qmin using the actual measurement data.

[0070] Furthermore, the determination of the minimum use current I0 does not necessarily have to be performed by the controller 4, but may be performed by the processor 65 of the mobile terminal 6. Specifically, a program installed in the mobile terminal 6 may cause the processor 65 to determine the minimum use current I0 corresponding to the minimum use discharge flow rate Qmin or the minimum use discharge capacity q0 using the actual measurement data, and store the determined minimum use current I0 in the memory 61. In this case, the processor 65 may cause the wireless communication module 64 to transmit the actual measurement data and the minimum use current I0 stored in the memory 61 to the wireless LAN router 5 or the controller 4 when the data transmission button 73 is tapped.

[0071] Furthermore, the processor 65 of the mobile terminal 6 does not necessarily need to display the virtual symbol reading button 72 on the touch screen 62, and may start the camera 63 when a program icon displayed on the touch screen 62 is tapped.

[0072] <Summary> As a first aspect, the present disclosure provides, from a first aspect, a program for a mobile terminal including a processor, a memory, a wireless communication module, a touch screen, and a camera, the program causing the processor to acquire, when a symbol displayed on a surface of a hydraulic pump, whose discharge capacity increases as a command current increases, an image of the symbol displayed on the surface of the hydraulic pump is captured by the camera, actual measurement data indicating an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data indicating a predetermined rotation speed and an actual relationship between the command current and the discharge flow rate of the hydraulic pump at the predetermined rotation speed, and store the acquired data in the memory, display on the touch screen an input screen for a minimum usable discharge flow rate of the hydraulic pump and a reference rotation speed for defining the minimum usable discharge flow rate, store the minimum usable discharge flow rate and the reference rotation speed inputted on the input screen in the memory, display a virtual data transmission button on the touch screen, and when the data transmission button is tapped, cause the wireless communication module to transmit the actual measurement data, the minimum usable discharge flow rate, and the reference rotation speed stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

[0073] According to the above configuration, the controller can determine the minimum usable current corresponding to the minimum usable discharge flow rate by using the actual measurement data, and therefore the minimum usable discharge flow rate at the reference rotation speed of the hydraulic pump can be accurately set in the controller.

[0074] As a second aspect, from a second aspect, the present disclosure provides a program for a mobile terminal including a processor, a memory, a wireless communication module, a touch screen, and a camera, the program causing the processor to acquire, when a symbol displayed on a surface of a hydraulic pump, whose discharge capacity increases as a command current increases, an image of the symbol displayed on the surface of the hydraulic pump is captured by the camera, actual measurement data indicating an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data indicating a predetermined rotation speed and an actual relationship between the command current and the discharge flow rate of the hydraulic pump at the predetermined rotation speed, and storing the acquired data in the memory, displaying an input screen for a minimum usable discharge capacity of the hydraulic pump on the touch screen, storing the minimum usable discharge capacity inputted on the input screen in the memory, displaying a virtual data transmission button on the touch screen, and causing the wireless communication module to transmit the actual measurement data and the minimum usable discharge capacity stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller when the data transmission button is tapped.

[0075] According to the above configuration, the controller can determine the minimum usable current corresponding to the minimum usable displacement by using the actual measurement data, and therefore the minimum usable displacement of the hydraulic pump can be accurately set in the controller.

[0076] As a third aspect, the present disclosure provides, from a third aspect, a program for a mobile terminal including a processor, a memory, a wireless communication module, a touch screen, and a camera, the program causing the processor to, when a symbol displayed on a surface of a hydraulic pump in which a discharge capacity increases as a command current increases, acquire actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and a discharge flow rate of the hydraulic pump at the predetermined rotation speed, and store the acquired data in the memory; and causing a minimum usable discharge flow rate of the hydraulic pump and a reference rotation speed for defining the minimum usable discharge flow rate of the hydraulic pump to be acquired. The present invention provides a program that displays an input screen on the touch screen, stores the minimum usable discharge flow rate and the reference rotation speed input on the input screen in the memory, determines a minimum usable current corresponding to the input minimum usable discharge flow rate using the actual measurement data, stores the determined minimum usable current in the memory, displays a virtual data transmission button on the touch screen, and, when the data transmission button is tapped, causes the wireless communication module to transmit the actual measurement data and the minimum usable current stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

[0077] According to the above configuration, the minimum usable current corresponding to the minimum usable discharge flow rate is determined using actual measurement data and transmitted to the controller, so that the minimum usable discharge flow rate at the reference rotation speed of the hydraulic pump can be accurately set in the controller.

[0078] As a fourth aspect, the present disclosure provides, from the fourth aspect, a program for a mobile terminal including a processor, a memory, a wireless communication module, a touch screen, and a camera, the program causing the processor to, when a symbol displayed on a surface of a hydraulic pump in which a discharge capacity increases as a command current increases, acquire actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and a discharge flow rate of the hydraulic pump at the predetermined rotation speed, and store the acquired data in the memory, and display an input screen for a minimum usable discharge capacity of the hydraulic pump on the touch screen. and a program for causing the wireless communication module to transmit the actual measurement data and the minimum usable current stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller when the data transmission button is tapped.

[0079] According to the above configuration, the minimum usable current corresponding to the minimum usable discharge capacity is determined using actual measurement data and transmitted to the controller, so that the minimum usable discharge capacity of the hydraulic pump can be accurately set in the controller.

[0080] As a fifth aspect, in any of the first to fourth aspects, for example, the actual measurement data may be stored in the symbol, and the above program may cause the processor to acquire the actual measurement data stored in the symbol when the symbol is imaged by the camera.

[0081] As a sixth aspect, in any of the first to fourth aspects, for example, the symbol may store destination information for the actual measurement data, and the above program may cause the processor to obtain the actual measurement data via a network from a server specified by the destination information stored in the symbol when the symbol is imaged by the camera.

[0082] As a seventh aspect, in any of the first to sixth aspects, for example, the above program may cause the processor to display a virtual symbol reading button on the touch screen for starting to read the symbol, and to launch the camera when the symbol reading button is tapped.

[0083] As an eighth aspect, from the fifth aspect, the present disclosure provides a data processing method using a mobile terminal, the data processing method including: when a symbol displayed on a surface of a hydraulic pump, in which a discharge capacity increases as a command current increases, is captured by a camera of the mobile terminal, actual measurement data indicating an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data indicating a predetermined rotation speed and an actual relationship between the command current and a discharge flow rate of the hydraulic pump at the predetermined rotation speed, acquiring and storing in a memory of the mobile terminal; displaying on a touch screen of the mobile terminal an input screen for a minimum usable discharge flow rate of the hydraulic pump and a reference rotation speed for defining the minimum usable discharge flow rate; storing in the memory the minimum usable discharge flow rate and the reference rotation speed inputted on the input screen; displaying on the touch screen a virtual data transmission button; and when the data transmission button is tapped, causing a wireless communication module of the mobile terminal to transmit the actual measurement data, the minimum usable discharge flow rate, and the reference rotation speed stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

[0084] According to the above configuration, the controller can determine the minimum usable current corresponding to the minimum usable discharge flow rate by using the actual measurement data, and therefore the minimum usable discharge flow rate at the reference rotation speed of the hydraulic pump can be accurately set in the controller.

[0085] As a ninth aspect, from the sixth aspect, the present disclosure provides a data processing method using a mobile terminal, the data processing method including, when a symbol displayed on a surface of a hydraulic pump, in which a discharge capacity increases as a command current increases, capturing an image of the ...

[0086] According to the above configuration, the controller can determine the minimum usable current corresponding to the minimum usable displacement by using the actual measurement data, and therefore the minimum usable displacement of the hydraulic pump can be accurately set in the controller.

[0087] As a tenth aspect, the present disclosure provides, from the seventh aspect, a data processing method using a mobile device, comprising: when a symbol displayed on a surface of a hydraulic pump, in which a discharge capacity increases as a command current increases, is captured by a camera of the mobile device, actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and a discharge flow rate of the hydraulic pump at the predetermined rotation speed are acquired and stored in a memory of the mobile device; and an input screen for a minimum usable discharge flow rate of the hydraulic pump and a reference rotation speed for defining the minimum usable discharge flow rate is displayed on a touch screen of the mobile device. a virtual data transmission button on the touch screen; and when the data transmission button is tapped, a wireless communication module of the portable terminal transmits the actual measurement data and the minimum current used stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

[0088] According to the above configuration, the minimum usable current corresponding to the minimum usable discharge flow rate is determined using actual measurement data and transmitted to the controller, so that the minimum usable discharge flow rate at the reference rotation speed of the hydraulic pump can be accurately set in the controller.

[0089] As an eleventh aspect, the present disclosure provides, from the eighth aspect, a data processing method using a mobile device, comprising: when a symbol displayed on a surface of a hydraulic pump, in which a discharge capacity increases as a command current increases, is captured by a camera of the mobile device, actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and a discharge flow rate of the hydraulic pump at the predetermined rotation speed are acquired and stored in a memory of the mobile device; and an input screen for inputting a minimum usable discharge capacity of the hydraulic pump is displayed on a touch screen of the mobile device; the minimum use current corresponding to the inputted minimum use discharge volume is determined using the actual measurement data, the determined minimum use current is stored in the memory, a virtual data transmission button is displayed on a touch screen of the mobile terminal, and when the data transmission button is tapped, a wireless communication module of the mobile terminal is caused to transmit the actual measurement data and the minimum use current stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

[0090] According to the above configuration, the minimum usable current corresponding to the minimum usable discharge capacity is determined using actual measurement data and transmitted to the controller, so that the minimum usable discharge capacity of the hydraulic pump can be accurately set in the controller.

[0091] As a twelfth aspect, in any of the eighth to eleventh aspects, for example, the actual measurement data may be stored in the symbol, and the actual measurement data stored in the symbol may be acquired when the symbol is imaged by the camera.

[0092] As a thirteenth aspect, in any of the eighth to eleventh aspects, for example, the symbol may store destination information for the actual measurement data, and when the symbol is imaged by the camera, the actual measurement data may be obtained via a network from a server specified by the destination information stored in the symbol.

[0093] As a fourteenth aspect, in any of the eighth to thirteenth aspects, for example, a virtual symbol reading button for starting reading the symbol may be displayed on the touch screen, and the camera may be launched when the symbol reading button is tapped. [Explanation of symbols]

[0094] 1. Pump System 2 Hydraulic Pump 4. Controller 5. Wireless LAN router 6. Mobile Devices 61 Memory 62 Touchscreen 63 Camera 64 Wireless communication module 65 processors 71 Qmin input button 72 Symbol reading button 73 Data transmission button 8. Input screen 91 Network 92 Server

Claims

1. A program for a mobile terminal including a processor, a memory, a wireless communication module, a touch screen, and a camera, The processor, When a symbol displayed on a surface of a hydraulic pump, the discharge capacity of which increases as a command current increases, is captured by the camera, actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and the discharge flow rate of the hydraulic pump at the predetermined rotation speed are obtained and stored in the memory; displaying an input screen for a minimum usable discharge flow rate and a reference rotation speed for defining the minimum usable discharge flow rate of the hydraulic pump on the touch screen, and storing the minimum usable discharge flow rate and the reference rotation speed inputted on the input screen in the memory; A program that displays a virtual data transmission button on the touch screen, and when the data transmission button is tapped, causes the wireless communication module to transmit the actual measurement data, the minimum usable discharge flow rate, and the reference rotation speed stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

2. A program for a mobile terminal including a processor, a memory, a wireless communication module, a touch screen, and a camera, The processor, When a symbol displayed on a surface of a hydraulic pump, the discharge capacity of which increases as a command current increases, is captured by the camera, actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and the discharge flow rate of the hydraulic pump at the predetermined rotation speed are obtained and stored in the memory; displaying an input screen for a minimum usable discharge capacity of the hydraulic pump on the touch screen, and storing the minimum usable discharge capacity inputted on the input screen in the memory; A program that displays a virtual data transmission button on the touch screen, and when the data transmission button is tapped, causes the wireless communication module to transmit the actual measurement data and the minimum usable discharge volume stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

3. A program for a mobile terminal including a processor, a memory, a wireless communication module, a touch screen, and a camera, The processor, When a symbol displayed on a surface of a hydraulic pump, the discharge capacity of which increases as a command current increases, is captured by the camera, actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and the discharge flow rate of the hydraulic pump at the predetermined rotation speed are obtained and stored in the memory; displaying an input screen for a minimum usable discharge flow rate and a reference rotation speed for defining the minimum usable discharge flow rate of the hydraulic pump on the touch screen, storing the minimum usable discharge flow rate and the reference rotation speed input on the input screen in the memory, and determining a minimum usable current corresponding to the input minimum usable discharge flow rate using the actual measurement data, and storing the determined minimum usable current in the memory; A program that displays a virtual data transmission button on the touch screen, and when the data transmission button is tapped, causes the wireless communication module to transmit the actual measurement data and the minimum current draw stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

4. A program for a mobile terminal including a processor, a memory, a wireless communication module, a touch screen, and a camera, The processor, When a symbol displayed on a surface of a hydraulic pump, the discharge capacity of which increases as a command current increases, is captured by the camera, actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and the discharge flow rate of the hydraulic pump at the predetermined rotation speed are obtained and stored in the memory; displaying an input screen for a minimum usable discharge capacity of the hydraulic pump on the touch screen, storing the minimum usable discharge capacity inputted on the input screen in the memory, determining a minimum usable current corresponding to the inputted minimum usable discharge capacity using the actual measurement data, and storing the determined minimum usable current in the memory; A program that displays a virtual data transmission button on the touch screen, and when the data transmission button is tapped, causes the wireless communication module to transmit the actual measurement data and the minimum current draw stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

5. The symbol stores the actual measurement data, The processor, The program according to claim 1 , further comprising: acquiring the actual measurement data stored in the symbol when the symbol is imaged by the camera.

6. The symbol stores information about where the actual measurement data is to be saved, The processor, 5. The program according to claim 1, further comprising: a program for acquiring, when the symbol is imaged by the camera, the actual measurement data from a server specified by the destination information stored in the symbol, via a network.

7. The processor, 5. The program according to claim 1, further comprising: displaying a virtual symbol reading button for starting reading the symbol on the touch screen; and activating the camera when the symbol reading button is tapped.

8. A data processing method using a mobile terminal, comprising: When a symbol displayed on a surface of a hydraulic pump, the discharge capacity of which increases as a command current increases, is captured by a camera of the mobile device, actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and the discharge flow rate of the hydraulic pump at the predetermined rotation speed are acquired and stored in a memory of the mobile device; displaying an input screen for a minimum usable discharge flow rate and a reference rotation speed for defining the minimum usable discharge flow rate of the hydraulic pump on a touch screen of the mobile terminal, and storing the minimum usable discharge flow rate and the reference rotation speed inputted on the input screen in the memory; A data processing method comprising: displaying a virtual data transmission button on the touch screen; and, when the data transmission button is tapped, causing a wireless communication module of the mobile terminal to transmit the actual measurement data, the minimum usable discharge flow rate, and the reference rotation speed stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

9. A data processing method using a mobile terminal, comprising: When a symbol displayed on a surface of a hydraulic pump, the discharge capacity of which increases as a command current increases, is captured by a camera of the mobile device, actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and the discharge flow rate of the hydraulic pump at the predetermined rotation speed are acquired and stored in a memory of the mobile device; displaying an input screen for inputting a minimum usable discharge volume of the hydraulic pump on a touch screen of the mobile terminal, and storing the minimum usable discharge volume inputted on the input screen in the memory; A data processing method comprising: displaying a virtual data transmission button on the touch screen; and, when the data transmission button is tapped, causing a wireless communication module of the mobile terminal to transmit the actual measurement data and the minimum usable discharge volume stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

10. A data processing method using a mobile terminal, comprising: When a symbol displayed on a surface of a hydraulic pump, the discharge capacity of which increases as a command current increases, is captured by a camera of the mobile device, actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and the discharge flow rate of the hydraulic pump at the predetermined rotation speed are acquired and stored in a memory of the mobile device; displaying an input screen for a minimum usable discharge flow rate and a reference rotation speed for defining the minimum usable discharge flow rate of the hydraulic pump on a touch screen of the mobile terminal, storing the minimum usable discharge flow rate and the reference rotation speed inputted on the input screen in the memory, and determining a minimum usable current corresponding to the inputted minimum usable discharge flow rate using the actual measurement data, and storing the determined minimum usable current in the memory; A data processing method comprising: displaying a virtual data transmission button on the touch screen; and, when the data transmission button is tapped, causing a wireless communication module of the mobile terminal to transmit the actual measurement data and the minimum current draw stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

11. A data processing method using a mobile terminal, comprising: When a symbol displayed on a surface of a hydraulic pump, the discharge capacity of which increases as a command current increases, is captured by a camera of the mobile device, actual measurement data showing an actual relationship between the command current and the discharge capacity of the hydraulic pump, or actual measurement data showing a predetermined rotation speed and an actual relationship between the command current and the discharge flow rate of the hydraulic pump at the predetermined rotation speed are acquired and stored in a memory of the mobile device; displaying an input screen for a minimum usable discharge capacity of the hydraulic pump on a touch screen of the mobile terminal, storing the minimum usable discharge capacity inputted on the input screen in the memory, and determining a minimum usable current corresponding to the inputted minimum usable discharge capacity using the actual measurement data, and storing the determined minimum usable current in the memory; A data processing method comprising: displaying a virtual data transmission button on a touch screen of the mobile terminal; and, when the data transmission button is tapped, causing a wireless communication module of the mobile terminal to transmit the actual measurement data and the minimum current draw stored in the memory to a controller for the hydraulic pump or a wireless LAN router connected to the controller.

12. The symbol stores the actual measurement data, The data processing method according to claim 8 , further comprising the step of acquiring the actual measurement data stored in the symbol when the symbol is imaged by the camera.

13. The symbol stores information about where the actual measurement data is to be saved, 12. The data processing method according to claim 8, further comprising the steps of: acquiring the actual measurement data via a network from a server specified by the destination information stored in the symbol when the symbol is imaged by the camera.

14. 12. The data processing method according to claim 8, further comprising displaying a virtual symbol reading button on the touch screen for starting reading the symbol, and activating the camera when the symbol reading button is tapped.

Images