FI127372B - Method of testing a pair of skis - Google Patents
Method of testing a pair of skis Download PDFInfo
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- FI127372B FI127372B FI20165998A FI20165998A FI127372B FI 127372 B FI127372 B FI 127372B FI 20165998 A FI20165998 A FI 20165998A FI 20165998 A FI20165998 A FI 20165998A FI 127372 B FI127372 B FI 127372B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H20/00—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C11/00—Accessories for skiing or snowboarding
- A63C11/04—Accessories for skiing or snowboarding for treating skis or snowboards
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C11/00—Accessories for skiing or snowboarding
- A63C11/04—Accessories for skiing or snowboarding for treating skis or snowboards
- A63C11/08—Apparatus for waxing or dewaxing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
- G01P3/66—Devices characterised by the determination of the time taken to traverse a fixed distance using electric or magnetic means
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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Description
Method for testing pair of skis
Field
The invention relates to a method for testing a pair of skis travelling over snow with a system comprising a first portable apparatus for a first person waxing the pair of the skis and a second portable apparatus for a second person testing the pair of the waxed skis.
Background
Bottom of skis are waxed with glide waxes and grip waxes in order to optimize kinetic friction and/or static friction between the bottom and snow. Waxing is a complicated procedure including numerous phases and choices, which makes also testing of the waxing results a very demanding task.
Brief description
The present invention seeks to provide an improved method for testing a pair of skis travelling over snow.
According to an aspect of the present invention, there is provided a method for testing a pair of skis travelling over snow with a system comprising a first portable apparatus for a first person waxing the pair of the skis and a second portable apparatus for a second person testing the pair of the waxed skis as specified in claim 1.
According to another aspect of the present invention, there is provided a first apparatus as specified in claim 11.
According to another aspect of the present invention, there is provided a second apparatus as specified in claim 12.
According to another aspect of the present invention, there is provided a system as specified in claim 13.
According to another aspect of the present invention, there is provided a system as specified in claim 14.
List of drawings
Example embodiments of the present invention are described below, by way of example only, with reference to the accompanying drawings, in which
Figure 1 illustrates example embodiments of a method for testing a pair of skis travelling over snow with a system comprising a first portable apparatus for a first person waxing the pair of the skis and a second portable apparatus for a second person testing the pair of the waxed skis;
Figure 2 illustrates example embodiments of the system;
Figures 3, 4 and 5 illustrate a first example embodiment for generating performance data while skiing;
Figures 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 and 16 illustrate a second example embodiment for generating performance data while skiing;
Figures 17, 18 and 19 illustrate a third example embodiment for generating performance data while skiing;
Figure 20 illustrates example embodiments of weather and snow condition tags; and
Figures 21, 22, 23 and 24 summarize example embodiments of the method and the system.
Description of embodiments
The following embodiments are only examples. Although the specification may refer to “an” embodiment in several locations, this does not necessarily mean that each such reference is to the same embodiment(s), or that the feature only applies to a single embodiment. Single features of different embodiments may also be combined to provide other embodiments. Furthermore, words "comprising" and "including" should be understood as not limiting the described embodiments to consist of only those features that have been mentioned and such embodiments may contain also features/structures that have not been specifically mentioned.
Figure 1 illustrates example embodiments of a method for testing a pair 150 of skis travelling over snow with a system 120 comprising a first portable apparatus 130 for a first person 170 waxing the pair 150 of the skis and a second portable apparatus 140 for a second person 180 testing the pair 150 of the waxed skis, and Figure 2 illustrates example embodiments of the system 120.
The system 120 comprises the first portable apparatus 130, the second portable apparatus 140, and, optionally, a processor 202, a user interface 208, and/or a database 210.
In an example embodiment, the first portable apparatus 130 and the second portable apparatus are personal computing devices of the user 170,180. A non-limiting list of example embodiments of the portable apparatus 130, 140 comprises: a portable computer, a laptop, a mobile phone, a smartphone, a tablet computer, a smartwatch, smartglasses, or any other portable/mobile computing device, which may be manipulated by the user 170,180.
In an example embodiment, the first and second portable apparatus 130, 140 is a general-purpose off-the-shelf computing device, as opposed to a purpose-build proprietary equipment, whereby research & development costs will be lower as only the special-purpose software (and not the hardware) needs to be designed, implemented and tested. In an example embodiment, the first and the second apparatus 130, 140 are a similar apparatus, and, in some cases, even a single apparatus 130,140 in these two different roles.
In an example embodiment, the system 120 comprises a computing server as the processor 202. The computing server may be implemented with any applicable technology. The computing server may include one or more centralized computing apparatuses, or it may include more than one distributed computing apparatuses. The computing server may be implemented with client-server technology, or in a cloud computing environment, or with another technology applicable to the system 120.
The first portable apparatus 130, the second portable apparatus, and, optionally, the system 120, each comprise one or more processors 202, 222, 242, and one or more memories 204, 224, 244 including computer program code 206, 226, 246. The one or more memories 204, 224, 244 and the computer program code 206, 226, 246 are configured to, with the one or more processors 202, 222, 242, cause the system 120 to perform processing to be described.
The communication between the first portable apparatus 130 and the second portable apparatus 140, and possibly also with the processor 202, user interface 208 and/or database 210 of the system 120 may be implemented with a wireless communication network 200. As shown in Figure 2, the first portable apparatus 130 and the second portable apparatus 140 may comprise an appropriate radio transceiver 230, 254 for the communication. In an example embodiment, the wireless communication is implemented with a suitable cellular communication technology such as GSM, GPRS, EGPRS, WCDMA, UMTS, 3GPP, 1MT, LTE, LTE-A, etc. and/or with a suitable non-cellular communication technology such as Bluetooth, Bluetooth Low Energy, Wi-Fi, WLAN, etc.
The communication between the first portable apparatus 130 and the second portable apparatus 140, either directly or through the system 120 such as by using the common database 210, augments the teamwork: the testing results by the testers 180 become automatically available for the service team 170, whereby feedback from the testing may be utilized to adjust choice of waxing procedures for the testing. This speeds up the waxing and testing cycles and saves resources.
The term 'processor' 202, 222, 242 refers to a device that is capable of processing data. Depending on the processing power needed, the portable apparatus 130,140 or the system 120 may comprise several processors 202, 222, 242 such as parallel processors or a multicore processor. When designing the implementation of the processor 202, 222, 242, a person skilled in the art will consider the requirements set for the size and power consumption of the portable apparatus 130, 140 or the system 120, the necessary processing capacity, production costs, and production volumes, for example.
The term 'memory' 204, 224, 244 refers to a device that is capable of storing data run-time (= working memory) or permanently (= non-volatile memory). The working memory and the non-volatile memory may be implemented by a random-access memory (RAM), dynamic RAM (DRAM), static RAM (SRAM), a flash memory, a solid state disk (SSD), PROM (programmable read-only memory), a suitable semiconductor, or any other means of implementing an electrical computer memory.
The processor 202, 222, 242 and the memory 204, 224, 244 may be implemented by an electronic circuitry. A non-exhaustive list of implementation techniques for the processor 202,222, 242 and the memory 204,224,244 includes, but is not limited to: logic components, standard integrated circuits, application-specific integrated circuits (ASIC), system-on-a-chip (SoC), application-specific standard products (ASSP), microprocessors, microcontrollers, digital signal processors, special-purpose computer chips, field-programmable gate arrays (FPGA), and other suitable electronics structures.
The computer program code 206, 226, 246 may be implemented by software. In an example embodiment, the software may be written by a suitable programming language (a high-level programming language, such as C, C++, or Java, or a low-level programming language, such as a machine language, or an assembler, for example), and the resulting executable code 206, 226, 246 may be stored on the memory 204, 224, 244 and run by the processor 202, 222, 242. In an alternative example embodiment, the functionality of the hardware may be designed by a suitable hardware description language (such as Verilog or VHDL), and transformed into a gate-level netlist (describing standard cells and the electrical connections between them), and after further phases the chip implementing the processor 202, 222, memory 204, 224 and the code 206, 226 of the portable apparatus 130, 140 may be fabricated with photo masks describing the circuitry.
In an example embodiment, the portable apparatus 130, 140, and, optionally, the system 120, comprises a user interface 228, 252, 208 implementing the exchange of graphical, textual and/or auditory information with the user 170, 180. The user interface 228, 252, 208 may be used to perform required user actions. The user interface 228, 252, 208 may be realized with various techniques, such as a (multi-touch) display, means for producing sound, a keyboard, and/or a keypad, for example. The means for producing sound may be a loudspeaker or a simpler means for producing beeps or other sound signals. The keyboard/keypad may comprise a complete (QWERTY) keyboard, a mere numeric keypad or only a few push buttons and/or rotary buttons. In addition, or alternatively, the user interface may comprise other user interface components, for example various means for focusing a cursor (mouse, track ball, arrow keys, touch sensitive area etc.) or elements enabling audio control.
An example embodiment provides a computer-readable medium 260 comprising the computer program code 226, 246 (and, optionally 206), which, when loaded into the portable apparatus 130,140 (and, optionally, into the system 120) and executed by portable apparatus 130,140 (and, optionally, by the system 120) causes the portable apparatus 130, 140 (and, optionally, the system 120) to perform processing of the example embodiments.
In an example embodiment, the operations of the computer program code 206, 226, 246 may be divided into functional modules, sub-routines, methods, classes, objects, applets, macros, etc., depending on the software design methodology and the programming language used. In modern programming environments, there are software libraries, i.e. compilations of ready-made functions, which may be utilized by the computer program code 206, 226, 246 for performing a wide variety of standard operations. In an example embodiment, the computer program code 206, 226, 246 may be in source code form, object code form, executable file, or in some intermediate form. The computer-readable medium 260 may comprise at least the following: any entity or device capable of carrying the computer program code 206, 226, 246 to the portable apparatus 130, 140 or to the remote system 120, a record medium, a computer memory, a readonly memory, an electrical carrier signal, a telecommunications signal, and a software distribution medium. In some jurisdictions, depending on the legislation and the patent practice, the computer-readable medium 260 may not be the telecommunications signal. In an example embodiment, the computer-readable medium 260 may be a non-transitory computer-readable storage medium.
In Figure 1, the operations are not strictly in chronological order, and some of the operations may be performed simultaneously or in an order differing from the given ones. Other functions may also be executed between the operations or within the operations and other data exchanged between the operations. Some of the operations or part of the operations may also be left out or replaced by a corresponding operation or a part of the operation. It should be noted that no special order of operations is required, except where necessary due to the logical requirements for the processing order.
The method starts in 100.
In 102, the first portable apparatus 130 reads 162 a tag 160A, 160B attached to the pair 150 of skis.
In 104, the first portable apparatus 130 associates a predetermined waxing procedure with the pair 150 of the skis identified by the read tag 160A, 160B. In an example embodiment, the predetermined waxing procedure comprises a set of applicable waxes (grip waxes and glide waxes for different types of snows and temperatures), used tools, other used chemicals and materials, various patterning of the ski bottoms, etc.
In 106, the first portable apparatus 130 outputs instructions explaining the predetermined waxing procedure for the pair 150 of the skis identified by the read tag 160A, 160B.
In 108, the second portable apparatus 140 reads 164 the tag 160A, 160B attached to the pair 150 of the waxed skis.
Optionally, in 118, the second portable apparatus 140 outputs instructions explaining a predetermined testing procedure for the pair 150 of the skis identified by the read tag 160A, 160B.
In 110, the second portable apparatus 140 generates performance data while skiing with the pair 150 of the waxed skis identified by the read tag 160A, 160B, the performance data indicating an amount of friction between bottom of the pair 150 of the skis and the snow.
In 112, the system 120 generates a ski testing result for the pair 150 of the waxed skis identified by the read tag 160A, 160B based on the performance data.
In 114, the system 120 outputs the ski testing result.
The method ends in 116 after the processing is finished, or, it may be looped back to the beginning from operation 112 or 114, and the processing of the next pair of skis may be started from the operation 102.
As shown in Figure 2, the first portable apparatus 130 comprises a radio-frequency identification reader 220 configured to read the tag 160A, 160B attached to the pair 150 of the skis, the user interface 228 configured to output 106 the instructions explaining the predetermined waxing procedure for the pair 150 of the skis identified by the read tag 160A, 160B, and the processor 222 configured to associate 104 the predetermined waxing procedure with the pair 150 of the skis identified by the read tag 160A, 160B by the radio-frequency identification reader 220 configured to receive a selection of the predetermined waxing procedure, and/or the user interface 228 configured to obtain a determination of the predetermined waxing procedure. The first apparatus 130 may also comprises the user interface 228 configured to output 114 the ski testing result.
As shown in Figure 2, the second portable apparatus 140 comprises a radio-frequency identification reader 240 configured to read the tag 160A, 160B attached to the pair 150 of the waxed skis, and an inertial measurement unit 248 configured to generate 110 the performance data while skiing with the pair 150 of the waxed skis identified by the read tag 160A, 160B, and/or a user interface 252 configured to generate 110 the performance data while skiing with the pair 150 of the waxed skis identified by the read tag 160A, 160B. The second apparatus 140 may further comprise a processor 242 configured to generate 112 the ski testing result for the pair 150 of the waxed skis identified by the read tag 160A, 160B based on the performance data. The second apparatus 140 may further comprise a user interface 252 configured to output 114 the ski testing result.
The system 120 may further comprises a processor 202 configured to generate 112 the ski testing result for the pair 150 of the waxed skis identified by the read tag 160A, 160B based on the performance data, and/or a user interface 208 configured to output 114 the ski testing result.
In an example embodiment, radio-frequency identification (RFID) reader 220,240 uses electromagnetic fields to automatically identify and track tags 160,160A, 160B attached to at least one ski 150A, 150B of the pair 150 of skis. The tags 160, 160A, 160B contain electronically stored information. Passive tags 160, 160A, 160B collect energy from interrogating radio waves transmitted by the RFID reader 220, 240.
In an example embodiment, the readers 220, 240 and the tags 160, 160A, 160B operate according to the near-field communication (NFC) protocol.
Figures 3, 4 and 5 illustrate a first example embodiment for generating 110 performance data while skiing.
As shown in Figure 3, the second portable apparatus 140, being attached to the second person 180, activates 310 automatically a stopwatch while gliding past a first marker 302 placed by a descent track 300, and deactivates 312 the stopwatch while gliding past a second marker 304 placed by the descent track 300, thereby measuring 314 an amount of time elapsed as the performance data. In an example embodiment, the stopwatch is implemented by software running in the second portable apparatus 140. The measured amount of the time elapsed indicates an amount of kinetic friction caused by the predetermined waxing procedure comprising glide waxing as the performance data.
In an example embodiment, illustrated in Figures 2 and 4, the second portable apparatus 140 comprises a magnetometer 250, and generating 110 the performance data further comprises: the second portable apparatus 140 activates 310 the stopwatch after detecting, utilizing the magnetometer 250, a first magnetic field caused by a first magnet 400 attached to the first marker 302, and deactivates 312 the stopwatch after detecting, utilizing the magnetometer 250, a second magnetic field caused by a second magnet 402 attached to the second marker 302. In an example embodiment, the first and second magnets 400, 402 are permanent magnets creating own persistent magnetic fields. In an example embodiment, a proximity sensor of the second portable apparatus 140 may be used for activating and deactivating the stopwatch.
In an example embodiment, a plurality of different predetermined waxing procedures are compared with each other, and outputting 114 the ski testing result further comprises: setting 316 the result having the smallest measured amount of time elapsed as the best predetermined waxing procedure. In essence, the pair of the skis having the smallest measured amount of time elapsed indicates the best predetermined waxing procedure as this pair of the skis glides the fastest (meaning it has the best glide waxing).
Figure 5 illustrates an example embodiment of a graph of a glide time analysis: time measurement is started when the first peak 500 of the magnet pulse is detected and stopped when the second peak 502 of the magnet pulse is detected. Time measurement does not need to start from the peak of the pulse, but it may start also when some other specified criteria of the magnet pulse is fulfilled.
Figures 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 and 16 illustrate a second example embodiment for generating 110 performance data while skiing.
The second portable apparatus 140 comprises an inertial measurement unit 248. The inertial measurement unit 248 may comprise a magnetometer (measuring usually in three dimensions) to measure variations in the Earth's magnetic field and an acceleration sensor (measuring usually in three dimensions), and possibly also a gyroscope.
Generating 110 the performance data comprises: the second portable apparatus 140, being attached to the second person 180, measures 610, utilizing the inertial measurement unit 248, changes in a magnetic field and an acceleration during alternating striding and gliding motions of classic style skiing as the performance data.
Generating 112 the ski testing result comprises: estimating 612 an amount of backward slide 700 during the striding by analyzing the changes in the magnetic field and the acceleration. The amount of the backward slide 700 indicates an amount of static friction achieved by the predetermined waxing procedure comprising grip waxing. In essence, if there is too much backward slide (such as above a predetermined threshold), the grip waxing is too ineffective, and a waxing procedure having a better grip should be used.
Figures 8, 9, 10, 11, 12 and 13 illustrate an example embodiment for detecting a kick phase of the striding, wherein the backward slide 700 happens.
As shown in Figure 8, with x and y magnetic components (x Mag and y Mag) and x and y acceleration components (x Acc and y Acc) different phases (on air, glide, kick) of classic skiing may be detected.
Figure 9 illustrates an on air -phase: x and y magnetic components indicate that the second portable apparatus 140 is nearly in a landscape position, meaning that the measured leg and ski are in the on air -phase. Accelerometer components x and y indicate a quite stabile period (small value changes), which also indicates the on air -phase. Two on air -phases are visible in Figure 9.
Figure 10 illustrates a coordinate system relative to the second portable apparatus 140: - x Mag = Magnet field figure of x-axis; - y Mag = Magnet field figure of y-axis; - x Acc = Accelerometer figure of x-axis; - y Acc = Accelerometer figure of y-axis; and - z-axis information is not used in this example embodiment.
Figure 11 illustrates a glide phase. Magnetic components (x Mag and y Mag) indicate that the second portable apparatus 140 is nearly in a portrait position, meaning that the measured leg and ski are in the glide phase. Accelerometer components (x Acc and y Acc) indicate a quite stabile period (small value changes), which also indicates that the ski is in a position of the glide phase. Two glide phases are visible in Figure 11.
Figure 12 illustrates a kick phase. When accelerometer components (x Acc or y Acc) start to change radically (more than a specified criteria) after the glide phase, the kick phase is started. The leg and second portable apparatus 140 are rotating after the glide position and phase in the kicking position and phase.
Figure 13 illustrates in more detail the detection of the kick phase. The kick phase ends when the on air -phase starts. The exact calculation criteria may be tailored for the skier 180 by setting parameters of stability and/or magnet field phase.
Figures 14 and 15 illustrate detection of the backward slide (or slipping). Sudden slipping causes vibration in accelerometer results. The second kick was slipping more than the first one. This is detected by checking vibration of X-axis acceleration during the kick phase. The kick vibration analysis period may be tailored/modified for the skier 180 by moving 1500 a start criteria of the on air-phase to happen earlier or later.
In an example embodiment, a grip wax comparison process is as follows. First kicks (two kicks, for example) are calibration kicks. Next kicks (five kicks, for example) are measured (amount of vibration) and an average figure is calculated for the first pair 150 of the skis. The next pair 150 of the skis is tested in the same way in the same location by the same skier 180. The pairs 150 of the skis are compared, ranked and the results are stored automatically.
As shown in Figure 16, if the second portable apparatus 140 is rotated 180 degrees, then magnetometer and accelerometer X-axis values are in opposite directions when compared with the previous graphs. Y-axis is in this example embodiment stays still upwards (top part of the second portable apparatus 140 is still upwards). If top part of the second portable apparatus 140 is downwards, then y Mag values are positive and x Acc and y Acc values depend on the apparatus 140 rotation direction during the kick. Device orientation is analyzed during the kick calibration phase and the kick slipping measuring takes into account the apparatus 140 orientation.
Figures 17, 18 and 19 illustrate a third example embodiment for generating 110 performance data while skiing.
Generating 110 the performance data comprises: two different predetermined waxing procedures for two different pairs 150, 1704 of skis each identified by its own tag 160,1706 are compared with each other by two persons 180, 1702 gliding on a descent track 1700, at first hand-in-hand, and next letting each other loose, and indicating the pair 150,1704 of the skis, which glided faster and/or longer, by an appropriate user interface manipulation 900, 910 in the second portable apparatus 140A, 140B.
Generating 112 the ski testing result comprises: setting 1712 the predetermined waxing procedure having the faster and/or longer glide as the better predetermined waxing procedure of the two different predetermined waxing procedures.
Figure 18 also illustrates that the second portable apparatus 140 may be attached above or by the ski boot 920 in the ankle of the skier 180. The second portable apparatuses 140A, 140B in this example embodiment are smartwatches with an appropriate user interface as shown.
As shown in Figure 19, five pairs 150 of skis, each identified by tags 160, may be tested in three pair tests 1000,1002,1004, whereupon the pair 3 emerges as the winner. Note that pair 5 is tested against pair 4 first so that it has the same amount of tests than other winners so far.
Figure 20 illustrates example embodiments of weather and snow condition tags. The system 120 associates a weather and snow condition tag 2000 with the pair of the skis 150 identified by the read tag 160A, 160B. The weather and snow condition tag 2000 comprises an outdoor temperature and a description of snow in a testing area. These tags may be placed on an appropriate surface, such as a poster, and the person 170,180 may read with his/her portable apparatus 130, 140 the suitable selections T0-T6 and S0-S4 & N0-N1, C0-C6 from the tags. The weather and snow condition tags are used to link the test results and test methods to the specific conditions. These WS tags 2000 may be utilized by search tools to find suitable predetermined waxing procedures.
In an example embodiment, a plurality of different predetermined waxing procedures are compared with each other by repeating the described operations 102, 104, 106, 108,110, 112, 114 for a plurality of different pairs 150 of skis each having a different predetermined waxing procedure, and, optionally, each pair 150 of skis calibration tested with a similar predetermined waxing procedure before the described operations in order to be able to take into account individual variations caused by characteristics of the pairs 150 of the skis. With the first feature, different predetermined waxing procedures may be compared with each other. The second, optional feature may further enhance the comparison of the predetermined waxing procedures as individual variations in the pairs 150 of the skis themselves may be taken into account.
In an example embodiment, generating 110 the performance data and generating 112 the ski testing result are repeated at least two times, at first after performing the predetermined waxing procedure, and next after the pair of the skis have been skied for a known distance, and the system 120 generates information about change between the initial ski testing result and the subsequent at least one ski testing result. In this way, the durability and change of the waxing may be estimated, in percentages for example (the gliding properties or gripping properties are only 70% of the original after skiing 10 kilometres, for example).
In an example embodiment, the second portable apparatus 140 comprises a global navigation satellite system (GNSS) receiver 256 (such as GPS, GLONASS or Galileo, for example) for measuring the skied distance.
Finally, Figures 21, 22, 23 and 24 summarize example embodiments of the method and the system 120.
Figure 21 illustrates the first portable apparatus 130 as utilized by the ski service team 170, the second portable apparatus 140 as utilized by the ski test team 180, and features of the system 120.
Figure 22 illustrates various information flows in the system 120 and with various actors such as the portable apparatuses 130,140 and the persons 170, 180.
Figure 23 illustrates ski waxing coupled with the method illustrated in
Figure 1.
The ski waxing is started in 2300.
In 2302, existing test results are searched by using stored WS tags to find the best waxing procedure for the specific pair 150 of the skis to be skied in certain weather conditions (temperature, type of snow, etc.). This operation may be performed by the first portable apparatus 130.
Note that new waxing procedures may be made by reading and recording used waxes and wax tools (by reading NFC tags attached to them, for example). Later, further notes may be added to the recorded steps. A manual specification of a waxing procedure may be made by using the first portable apparatus 130 and data of waxes and wax tools stored in the database 210. The waxing procedure may contains WS tags, i.e., the waxing procedure is defined for a certain combination of WS tags T0-T6, SO-S4, N0-N1 and C0-C6 defined in Figure 20, for example.
In 2304, used waxing procedure is selected by the first portable apparatus 130.
Next, operations 102,104 and 106 are performed as described earlier.
The instructions explaining the predetermined waxing procedure outputted in 106 may be followed from mobile or smartwatch 130 step-by-step in 2306. In 2308, an NFC identifier of wax or wax tool is read with mobile or smartwatch 130 to confirm the step (either before and/or after performing the step). After each step, the next step is entered in 2310, or if the waxing is done 2312, operation 2314 is entered.
The waxing instructions are visible on a screen of the mobile and/or smartwatch 130 (or even in the smartglasses). The RFID reader 220 of the first portable apparatus 130 may be used to confirm or record each waxing step. Note that because of wireless RFID usage and smartwatch support for wrist gestures, the touch screen 228 of the first portable apparatus 130 need not be touched by fingers soiled with wax.
In 2314, the used waxing procedure is stored to ski specific data, in the database 210, for example.
In 2316, the waxed pair 150 of the skis is stored to a test list, in the database 210, for example.
The ski waxing ends in 2318 as the waxed pair 150 of the skis is ready for testing.
Figure 24 illustrates ski testing coupled with the method illustrated in
Figure 1.
The ski testing is started in 2400.
In 2402, WS tags, location and event data are stored with the second portable apparatus 140, to the database 210, for example.
In 2404, the test list (stored in operation 2316) is checked by the second portable apparatus 140 and a suitable test method is selected.
The testing methods, glide testing, grip testing, and pair glide testing, were explained earlier as first, second and third example embodiments for generating the performance data in 110.
As shown in Figure 24, each pair 150 of skis is tested with one of the testing methods, 108-110-310-312-314-112-316 or 108-110-610-112-612 or 108-110-1710-112-1712, or even with two or three of the testing methods.
After all tests are done, ski testing results are ready in 2406, and the results have been stored in the database 210, for example. In 2408, the skier may make the final choice of the pair 150 of the skis for the competion or skiing event. This enables fine-tuning of the choice: the best waxing procedure according to the tests may be augmented by subjective observations, which may change the final choice of the pair 150 of the skis. For example: the pair 150 of the skis with the best gliding properties may have too much sideways gliding, which makes it difficult to control the balance while skiing, and, consequently, another pair 150 of the skis is chosen with the second best gliding properties but with less sideways gliding. Such fine-tuned choice may also be stored in the database 210.
The ski testing ends in 2410.
It will be obvious to a person skilled in the art that, as technology advances, the inventive concept can be implemented in various ways. The invention and its embodiments are not limited to the example embodiments described above but may vary within the scope of the claims.
Claims (14)
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FI20165998A FI127372B (en) | 2016-12-21 | 2016-12-21 | Method of testing a pair of skis |
PCT/FI2017/050906 WO2018115578A1 (en) | 2016-12-21 | 2017-12-18 | Method for testing pair of skis |
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DE3644589A1 (en) * | 1986-12-27 | 1988-07-07 | Ple Gerhard | Apparatuses for selecting wax for apparatus for sliding on snow |
RU2176538C1 (en) * | 2000-10-12 | 2001-12-10 | Духовской Евгений Анатольевич | Method for selecting sportive equipment sliding surface |
US20110302050A1 (en) * | 2010-06-04 | 2011-12-08 | Michael Rogler Kildevaeld | Smart phone probe and application for ski wax recommendation |
US8941723B2 (en) * | 2010-08-26 | 2015-01-27 | Blast Motion Inc. | Portable wireless mobile device motion capture and analysis system and method |
US9261526B2 (en) * | 2010-08-26 | 2016-02-16 | Blast Motion Inc. | Fitting system for sporting equipment |
EP2608090B1 (en) * | 2011-11-01 | 2019-03-13 | Polar Electro Oy | Performance intensity zones |
US9639530B2 (en) * | 2014-09-12 | 2017-05-02 | The Boeing Company | Component measurement apparatus, system, and method |
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