TIRE PRESSURE MANAGEMENT DEVICE, TIRE PRESSURE MANAGEMENT PROGRAM, AND TIRE PRESSURE MANAGEMENT METHOD

Abstract

To provide a tire internal pressure management device, a tire internal pressure management program, and a tire internal pressure management method capable of predicting appropriate internal pressure filling timing even when tire temperature greatly changes, for tires of mobile bodies including aircraft and vehicles.SOLUTION: A tire internal pressure management device includes: a data acquisition unit 102 for acquiring internal pressure time-series data and temperature time-series data for each tire 10 mounted on one of mobile objects M1 including aircraft and vehicles; a representative value calculation unit 103 for calculating a representative value of temperature-corrected internal pressure data for each predetermined period on the basis of the acquired internal pressure time-series data and temperature time-series data; and internal pressure filling timing predicting unit 104 that predicts, as internal pressure filling timing, timing when the internal pressure falls below a predetermined threshold value, on the basis of transition of the calculated representative value of the internal pressure data.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a tire internal pressure management device, a tire internal pressure management program, and a tire internal pressure management method that are applicable to tires of moving bodies including aircraft and vehicles. [Background technology]

[0002] The internal pressure of tires for aircraft, a type of moving object, is checked when the tires are fitted to the aircraft or before takeoff, and is adjusted to a level that takes into account the load during takeoff and landing.

[0003] Incidentally, in order to ensure the safety of aircraft, etc., it is required that the internal pressure of aircraft tires and the like be accurately determined and that the internal pressure be inflated as necessary.

[0004] In view of this, various techniques have been proposed relating to tire internal pressure management devices that acquire and manage the internal pressure of aircraft tires and the like (Patent Document 1).

[0005] This allows the internal pressure of the tires to be managed and the appropriate time to refill the tires to be determined, ensuring the safety of aircraft, etc. and preventing tire failures. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2004-58998 A Summary of the Invention [Problem to be solved by the invention]

[0007] Here, in the tire management device, when providing information on the timing of tire internal pressure inflation, etc., it is necessary to perform appropriate temperature correction since the internal pressure varies with temperature changes inside the tire.

[0008] However, in cases where tire temperature changes significantly due to takeoff and landing, such as in an aircraft, it is difficult to accurately grasp the temperature inside the tire. As a result, there is a problem that appropriate temperature correction cannot be performed, and the timing for inflating the tire pressure cannot be accurately predicted.

[0009] Therefore, the present invention has been made in consideration of the above problems, and aims to provide a tire internal pressure management device, a tire internal pressure management program, and a tire internal pressure management method that are capable of predicting the appropriate time to inflate the internal pressure of tires of moving bodies including aircraft and vehicles, even when there are large changes in tire temperature. [Means for solving the problem]

[0010] A tire internal pressure management device according to one embodiment of the present invention comprises a data acquisition unit that acquires internal pressure time series data and temperature time series data for each tire mounted on a moving body including an aircraft or a vehicle, a representative value calculation unit that calculates a representative value of temperature-corrected internal pressure data for each predetermined period based on the acquired internal pressure time series data and temperature time series data, and an internal pressure filling time prediction unit that predicts the time when the internal pressure value will fall below a predetermined threshold value as the internal pressure filling time based on the trend of the calculated representative value of the internal pressure data.

[0011] This makes it possible to predict the appropriate timing for refilling the internal pressure even when the tire temperature changes significantly.

[0012] The vehicle may further include a tire number prediction unit for predicting the number of tires that require tire pressure filling within a predetermined future period, based on the calculation results of the timing of tire pressure filling for each tire.

[0013] This makes it possible to predict the amount of work required for internal pressure filling work, thereby making the work more efficient.

[0014] In addition, the tire pressure filling timing correction unit can be provided which corrects the internal pressure filling timing for each tire mounted on the same moving body so that the internal pressure filling timing is the same when the internal pressure filling timing is within a predetermined period.

[0015] This makes it possible to collectively perform the internal pressure filling work on multiple tires that are close to the time for internal pressure filling, thereby making the work even more efficient.

[0016] The device may further include an abnormality determination unit that calculates an internal pressure decrease rate based on the transition of the representative value of the internal pressure data, and determines that an abnormality has occurred when the internal pressure decrease rate exceeds a preset threshold value.

[0017] This allows tire abnormalities to be detected early, thereby improving the safety of moving bodies including aircraft and vehicles.

[0018] In addition, a tire internal pressure management program according to another aspect of the present invention includes a data acquisition step of acquiring internal pressure time series data and temperature time series data for each tire mounted on a moving body including an aircraft or a vehicle, a representative value calculation step of calculating a representative value of internal pressure data corrected for temperature at each predetermined period based on the acquired internal pressure time series data and temperature time series data, and an internal pressure filling time prediction step of predicting the time when the internal pressure value will fall below a predetermined threshold value as the internal pressure filling time based on the trend of the calculated representative value of the internal pressure data, and is executed by a tire internal pressure management device.

[0019] This makes it possible to predict the appropriate timing for refilling the internal pressure even when the tire temperature changes significantly.

[0020] In addition, a tire internal pressure management method according to another aspect of the present invention is summarized as having a data acquisition process for acquiring internal pressure time series data and temperature time series data for each tire mounted on a moving body including an aircraft or a vehicle, a representative value calculation process for calculating a representative value of internal pressure data corrected for temperature at each predetermined period based on the acquired internal pressure time series data and temperature time series data, and an internal pressure filling time prediction process for predicting the time when the internal pressure value will fall below a predetermined threshold value as the internal pressure filling time based on the progress of the calculated representative value of the internal pressure data.

[0021] This makes it possible to predict the appropriate timing for refilling the internal pressure even when the tire temperature changes significantly. Effect of the Invention

[0022] According to the present invention, it is possible to provide a tire internal pressure management device, a tire internal pressure management program, and a tire internal pressure management method that are capable of predicting the appropriate time to inflate the internal pressure of tires of moving bodies including aircraft and vehicles, even when there are large changes in tire temperature. [Brief description of the drawings]

[0023] [Figure 1] 1 is a functional block diagram showing a functional configuration of a tire internal pressure management device according to an embodiment. [Diagram 2] 1 is a schematic diagram showing a configuration example of a portion of a tire internal pressure management device according to an embodiment; [Diagram 3] FIG. 4 is a schematic diagram showing another configuration example of a portion of the tire internal pressure management device according to the embodiment. [Figure 4] 4 is a flowchart showing an example of a procedure of a tire internal pressure management process executed by the tire internal pressure management device according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] A tire internal pressure management device M1 according to an embodiment of the present invention will be described with reference to FIGS.

[0025] In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and the ratios of dimensions may differ from those of the actual drawings.

[0026] Therefore, specific dimensions should be determined with reference to the following description. In addition, the drawings may of course include parts with different dimensional relationships and ratios.

[0027] (Schematic configuration of tire internal pressure management device) The schematic configuration of a tire internal pressure management device 100 according to an embodiment will be described with reference to the functional block diagram of FIG. 1 and the schematic configuration diagram of FIG.

[0028] The tire internal pressure management device 100 is composed of, for example, a general-purpose computer or server, and is configured to receive internal pressure data and temperature data via a wireless line N1 from a sensor unit SU provided in each tire 10 (10a, 10b, ...) mounted on a moving body M1, including an aircraft or vehicle, as shown in Figure 1.

[0029] As shown in FIG. 2, the tire 10 is mounted on a wheel 11 to form a tire chamber 12.

[0030] The sensor unit SU is provided on the inside of the wheel 11 or on the inner wall of the tire 10. It goes without saying that depending on the type of the moving object M1, for example, if it is an aircraft, an aircraft tire is used, and if it is a vehicle, a vehicle tire is used.

[0031] As shown in FIG. 1, the tire internal pressure management device 100 includes a receiving unit 101 that receives internal pressure data and temperature data from a sensor unit SU having a transmission function via a wireless line N1.

[0032] The tire internal pressure management device 100 also includes a data acquisition unit 102 that acquires internal pressure time series data and temperature time series data based on the received internal pressure data and temperature data.

[0033] The tire internal pressure management device 100 also includes a representative value calculation unit 103 that calculates a representative value of temperature-corrected internal pressure data for each predetermined period (e.g., 24 hours) based on the acquired internal pressure time series data and temperature time series data. For example, if the moving object M1 is an airplane, the temperature can be corrected based on the results of a simulation of the internal pressure from immediately after landing, when the tire 10 becomes hot (e.g., about 70 to 80 degrees), until the temperature drops to the outside air temperature.

[0034] The tire internal pressure management device 100 also includes an internal pressure filling time prediction unit 104 that predicts the time when the internal pressure value will fall below a preset threshold value as the internal pressure filling time based on the transition of the calculated representative value of the internal pressure data.

[0035] This makes it possible to predict the appropriate time for refilling the internal pressure even when the tire temperature changes greatly, such as when the moving object M1 is an aircraft, thereby contributing to improving the safety of aircraft and the like.

[0036] In addition, the tire internal pressure management device 100 is equipped with a tire number prediction unit 105 that predicts the number of tires that require tire internal pressure filling within a predetermined future period (e.g., from about one day to one week) based on the calculation results of the internal pressure filling time for each tire 10 (10a, 10b, ...).

[0037] This makes it possible to predict the man-hours required for the internal pressure filling work, and to improve the efficiency of the work. In particular, when the moving body M1 is an aircraft, the internal pressure filling work needs to be performed in a short period between takeoff and landing, and by knowing the predicted result of the number of tires that need to be filled with internal pressure (for example, only three out of six tires need to be filled), the work can be performed efficiently.

[0038] It is also possible to determine not only the number of tires that require inflating the internal pressure, but also which tires 10a, 10b... require inflating (for example, one front tire and two rear tires), in which case the work can be carried out more efficiently.

[0039] In addition, the tire internal pressure management device 100 is equipped with an internal pressure filling time correction unit 106 that corrects the internal pressure filling times of each tire 10 (10a, 10b, ...) mounted on the same moving body M1 so that they are the same when the internal pressure filling times are within a predetermined period (e.g., from about one day to one week).

[0040] This makes it possible to collectively carry out the internal pressure filling operation on a plurality of tires 10a, 10b . . . that are due for internal pressure filling relatively soon, thereby making the operation more efficient.

[0041] The tire internal pressure management device 100 also includes an abnormality determination unit 107 that calculates the internal pressure decrease rate based on the transition of the representative value of the internal pressure data, and determines that an abnormality has occurred when the internal pressure decrease rate exceeds a preset threshold value.

[0042] This allows for early detection of an abnormality in the tires 10 (10a, 10b . . . ), which can contribute to improving the safety of the moving body M1 including an aircraft or a vehicle.

[0043] If an abnormality is determined, an alert may be displayed on the display unit 200, which is configured with a liquid crystal display device or the like, or a voice message may be issued to notify an administrator or the like.

[0044] (Regarding data acquisition methods) A brief description of how the internal pressure data and temperature data of the tire 10 are acquired will be given with reference to FIGS.

[0045] In the embodiment shown in FIG. 2, a sensor unit SU having a transmission function is disposed inside a wheel 11 on which a tire 10 is mounted, or on an inner wall of the tire 10.

[0046] This makes it possible to obtain the internal pressure data and temperature data obtained by the sensor unit SU via the receiving unit 101 of the tire internal pressure management device 100 or a dedicated reading device.

[0047] In the embodiment shown in FIG. 3, a valve B with a sensor is provided on the wheel 11 on which the tire 10 is mounted, and the dedicated reading device 300 is placed close to the valve B to obtain internal pressure data and temperature data.

[0048] The dedicated reading device 300 is configured to have a data receiving unit 301 at, for example, its tip, and to display and confirm the acquired internal pressure data and temperature data on a display unit 302 consisting of a liquid crystal display or the like. The dedicated reading device 300 also has a transmission function, and the tire internal pressure management device 100 can receive and acquire the internal pressure data and temperature data at the receiving unit 101.

[0049] (Tire pressure management) An example of a procedure for tire internal pressure management processing executed by the tire internal pressure management device 100 will be described with reference to the flowchart of FIG.

[0050] When this process is started, first, in step S10, the internal pressure time series data and the temperature time series data are acquired, and the process proceeds to step S11.

[0051] In step S11, a representative value of the internal pressure data corrected for temperature for each predetermined period is calculated based on the obtained internal pressure time series data and temperature time series data, and the process proceeds to step S12.

[0052] In step S12, the time when the internal pressure value falls below a preset threshold value is predicted as the internal pressure filling time based on the transition of the calculated representative value of the internal pressure data, and the process proceeds to step S13.

[0053] In step S13, the number of tires that will require tire pressure filling within a predetermined future period is predicted based on the calculation results of the internal pressure filling timing of each tire 10a, 10b . . . , and the process proceeds to step S14.

[0054] In step S14, if the internal pressure filling timing of each tire 10a, 10b... mounted on the same moving body M1 is within a preset period, the internal pressure filling timing is corrected to be the same, and the process proceeds to step S15.

[0055] In step S15, the internal pressure decrease rate is calculated based on the transition of the representative value of the internal pressure data, and it is determined whether or not the rate exceeds a preset threshold value for the internal pressure decrease rate.

[0056] If the result of the determination is "No", the process returns to step S10, and if the result is "Yes", the process proceeds to step S16.

[0057] In step S16, it is determined that an abnormality has occurred, and a notification is given by displaying a message or outputting a voice, and the process ends.

[0058] The processing results from steps S11 to S14 may be displayed on the display unit 200.

[0059] This makes it possible to predict the appropriate timing for refilling the internal pressure even when there are large changes in tire temperature, such as when the moving object M1 is an aircraft, thereby contributing to improved safety and work efficiency.

[0060] The tire internal pressure management device, tire state quantity estimation program, and tire state quantity estimation method of the present invention have been described above based on the illustrated embodiments, but the present invention is not limited to this, and the configuration of each part can be replaced with any configuration having similar functions.

[0061] For example, the internal pressure filling time predicting unit 104 may reset the internal pressure filling time based on information regarding tire replacement and internal pressure filling.

[0062] In addition, the tire internal pressure management device 100 may be configured to include a notification unit that transmits the internal pressure filling time calculated by the internal pressure filling time prediction unit 104 and the predicted number of tires calculated by the tire number prediction unit 105 to a predetermined notification destination.

[0063] In addition, when a notification unit is provided, the internal pressure filling target value set for each tire may be transmitted.

[0064] Furthermore, the predetermined period for acquiring the minimum internal pressure data does not need to be constant.

[0065] Furthermore, when the moving body M1 is an aircraft, the acquired internal pressure data may be corrected based on the elapsed time from landing to acquiring the internal pressure data.

[0066] The internal pressure filling time prediction unit 106 may change the internal pressure filling time (e.g., change the threshold value) depending on the predicted temperature (e.g., based on a weather forecast). This is because temperature is an important factor when predicting the tire internal pressure, and in particular, whether or not the tire internal pressure actually falls below a specified level is often influenced by the temperature of the day.

[0067] The tire internal pressure management device 100 may further calculate and notify information on the temperature or air temperature at which internal pressure filling becomes necessary at the calculated internal pressure filling time.

[0068] In other words, for example, by displaying a message such as "If the temperature is ··°C in ·· days, you will need to fill your tires," on the display unit 100 or by audio notification, safety and convenience can be improved. [Explanation of symbols]

[0069] M1 Mobile objects (aircraft, vehicles, etc.) 100 Tire pressure control device 10(10a, 10b…) Tire SU sensor unit 101 Receiving unit 102 Data Acquisition Section 103 Representative value calculation section 104 Internal pressure filling time prediction unit 105 Tire Quantity Forecasting Department 106 Internal pressure filling time correction part 107 Abnormality determination section 200 Display section

Claims

1. A data acquisition unit that acquires time series data of internal pressure and time series data of temperature for each tire mounted on a moving object, which is an aircraft; a representative value calculation unit that calculates a representative value of temperature-corrected internal pressure data for each predetermined period including a period from immediately after landing of the aircraft until the temperature of the tire becomes the outside air temperature based on the acquired internal pressure time series data and temperature time series data; an internal pressure filling time prediction unit that predicts a time when the internal pressure value will fall below a preset threshold value as an internal pressure filling time based on a transition of the calculated representative value of the internal pressure data; a tire number prediction unit that predicts the number of tires that require tire pressure filling during a future predetermined period between the arrival and departure of the aircraft based on the calculation result of the internal pressure filling time of each tire; A tire internal pressure management device comprising:

2. The tire internal pressure management device according to claim 1, further comprising an internal pressure filling time correction unit that corrects the internal pressure filling times of each tire mounted on the same moving body so that they are the same when the internal pressure filling times are within a predetermined period of time.

3. The tire internal pressure management device according to claim 1 or 2, characterized in that it is provided with an abnormality determination unit that calculates an internal pressure decrease rate based on the trend of the representative value of the internal pressure data, and determines that an abnormality has occurred when the internal pressure decrease rate exceeds a predetermined internal pressure decrease rate threshold value.

4. A tire internal pressure management device as described in claim 1, wherein the internal pressure filling time prediction unit changes the internal pressure filling time according to a predicted air temperature, and predicts the temperature of the tire or air temperature information at which internal pressure filling of the tire becomes necessary.

5. A data acquisition step of acquiring internal pressure time series data and temperature time series data for each tire mounted on the moving body, which is an aircraft; a representative value calculation step of calculating a representative value of temperature-corrected internal pressure data for each predetermined period including a period from immediately after landing of the aircraft until the temperature of the tire becomes the outside air temperature based on the acquired internal pressure time series data and temperature time series data; an internal pressure filling time prediction step of predicting a time when the internal pressure value will fall below a preset threshold value as an internal pressure filling time based on a transition of the calculated representative value of the internal pressure data; A step of predicting the number of tires that require tire pressure filling during a future predetermined period between the arrival and departure of the aircraft based on the calculation result of the internal pressure filling time of each tire. A tire internal pressure management program, comprising:

6. A data acquisition process for acquiring internal pressure time series data and temperature time series data for each tire mounted on the moving body, which is an aircraft; a representative value calculation process for calculating a representative value of temperature-corrected internal pressure data for each predetermined period including a period from immediately after landing of the aircraft until the temperature of the tire becomes the outside air temperature based on the acquired internal pressure time series data and temperature time series data; an internal pressure filling time prediction process for predicting a time when the internal pressure value will fall below a preset threshold value as the internal pressure filling time based on a transition of the calculated representative value of the internal pressure data; a tire number prediction process for predicting the number of tires that require tire pressure filling during a future predetermined period between the arrival and departure of the aircraft based on the calculation result of the internal pressure filling time of each tire; A tire internal pressure management method comprising the steps of:

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