EP0230007A2 - Fixation de ski - Google Patents

Fixation de ski Download PDF

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Publication number
EP0230007A2
EP0230007A2 EP86117553A EP86117553A EP0230007A2 EP 0230007 A2 EP0230007 A2 EP 0230007A2 EP 86117553 A EP86117553 A EP 86117553A EP 86117553 A EP86117553 A EP 86117553A EP 0230007 A2 EP0230007 A2 EP 0230007A2
Authority
EP
European Patent Office
Prior art keywords
evaluation circuit
counter
signals
ski binding
integrator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86117553A
Other languages
German (de)
English (en)
Other versions
EP0230007A3 (en
EP0230007B1 (fr
Inventor
Klaus Dr. Hölzl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TMC Corp
Original Assignee
TMC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TMC Corp filed Critical TMC Corp
Publication of EP0230007A2 publication Critical patent/EP0230007A2/fr
Publication of EP0230007A3 publication Critical patent/EP0230007A3/de
Application granted granted Critical
Publication of EP0230007B1 publication Critical patent/EP0230007B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00—Ski bindings
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/088—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with electronically controlled locking devices

Definitions

  • the invention relates to a device for detecting the forces acting on a ski binding or a shoe held in such a shoe with at least one electrical signal as a function of the forces which occur and an evaluation circuit processing these signals
  • the detected forces are evaluated exclusively with regard to the fulfillment of triggering criteria, the triggering of the binding of the binding being triggered by the evaluation circuit when the triggering criteria are reached.
  • the aim of the invention is to propose a device of the type mentioned at the outset, which makes it possible to obtain information about the fatigue state of the reed buyer.
  • the evaluation circuit is followed by an integrator which is connected to a display device and which can only be reset by means of a switching device which can be actuated by hand.
  • inner tension and tenseness e.g. due to psychological moments such as fear, or lack of driving skills and the like, of course also contribute to fatigue and are not directly detected by the proposed measures, they are nevertheless detected indirectly, namely such tension and tenseness, the external influencing factors such as the condition of the slopes etc.
  • the resulting impact curve is determined by both groups of factors. For example, when driving over the same bumps in a cramped, inexperienced driver, narrow peaks with a high amplitude occur, whereas with a good, experienced runner only elongated bumps with a small amplitude occur, which result in only low loads for the skier and the binding.
  • the integrator connected to the evaluation circuit is designed as a counter, which counts the signals of the evaluation circuit corresponding to the shocks acting on the binding or the shoe, possibly exceeding an adjustable limit value.
  • the integrator connected downstream of the evaluation circuit is designed as a counter, which counts the digital signals coming from the evaluation circuit and corresponding to the bursts which have an energy content which can be above an adjustable limit value.
  • the signals corresponding to the acting forces in the evaluation circuit are shown over time integrated, where appropriate signals below a certain amplitude value are suppressed and the integrated signals are converted into digital signals. This enables a relatively precise recording of the loads acting on the skier and the binding.
  • the integrator connected downstream of the evaluation circuit is designed as a counter that receives the signals the evaluation circuit counts those shocks whose rise and fall speeds exceed an optionally adjustable limit value.
  • the evaluation circuit can either differentiate the incoming signals and thereby determine the steepness of the incoming signals or the evaluation circuit determines the width of the incoming signals at a certain height and their amplitudes. This also enables relatively sharp signals with a high amplitude to be recorded.
  • the integrator connected downstream of the evaluation circuit is formed by a divider and at least one counter connected downstream thereof, which can be connected to and read out from a display device, the divider preferably being connected to two counters connected in parallel which can be selectively connected to the display device via a changeover switch, one of the counters being resettable with the manually operated switching device and the other counter being connected to a digital comparator, the second input of which is connected to a limit indicator and the output of which is connected to a further display device is.
  • the latter measures achieve a separation of the displays regarding the runner's state of fatigue and the state of the binding.
  • This also makes it possible to provide a reset device which can be actuated by the user for only one counter. So it is possible to just the to reset the counter related to the skier, for example daily, whereas the counter relating to the binding can only be reset when the binding is being serviced, the need for maintenance being indicated by a separate display device.
  • FIG. 2 to 4 shows different embodiments of the individual components, these differing only in terms of their evaluation level, i.e. of their limit transmitter.
  • the block diagram according to Fig. 1 shows: The forces acting on the binding and thus on the skier are converted into electrical signals in the transducer 1.
  • the sensor 1 can be formed by strain gauges glued to a bending rod, by an accelerometer, by piezo crystals or another pressure-absorbing material. Further possibilities for the design of a force transducer are, for example, the arrangement of an oscillating beam coupled to an electromagnet, a field effect transducer or a capacitive transducer.
  • the signals from the pickup 1 are fed to an amplifier stage 2.
  • this amplifier stage 2 is designed either as an electrometer amplifier 2a or as a differential amplifier 2b (for connecting strain gauges).
  • the output signal of the amplifier stage 2 is fed to an evaluation stage 3.
  • the output of the evaluation stage is connected to the input of a comparator stage 4. If the output voltage of evaluation stage 3 exceeds a limit value set in comparator stage 4 n times, the digits or numbers are increased by 1 in a resettable daily counter 6 and in a total counter 7; n is the partial ratio of a divisor 5.
  • the count of the Daily counter 6 or total counter 7 can be displayed with a display switch 8 on a display unit 9.
  • the day counter 6 is connected to a reset device which can be operated manually by the user and which can be formed, for example, by a simple button (see button 61 in FIG. 2).
  • This counter 6 therefore serves as an indication of the fatigue of the skier. In this way, reaching a certain display value can be taken as an indication of extensive fatigue.
  • the output of the total counter 7 is further connected to a digital comparator 10, which activates a control display 12 when the value corresponding to the value set in a digital limit transmitter 11 is exceeded and thus indicates that the binding is to be overhauled.
  • evaluation level 3 - Exceeding or falling below a certain value of the amplitude of the sensor signal.
  • FIGS. 2 to 4 Possible embodiments of the different parts are shown in FIGS. 2 to 4. In all embodiments, resistors that have identical values are identified by the same reference numbers. The individual embodiments according to FIGS. 2 to 4 differ only in the different configuration of their evaluation level 3. Furthermore, FIGS. 2 to 4 each contain two variants for the transducer 1 and the amplifier 2.
  • the pickup signal reaches the amplifier 20 via resistors R21, R22.
  • the gain is determined by the ratio of the resistance values R22 / R21.
  • a differential amplifier 2b can be used with the amplifier 20b and with the amplification (1 + R21b / R22b).
  • the output of amplifier stage 2 is connected to the input of a rectifier 3a, which consists of resistors R31, R32, R33, amplifiers 30, 30a and diodes D31 / D32.
  • the rectifier 3a forms the evaluation level 3.
  • the comparator stage 4 contains a comparator 40, the input of which is connected via a resistor R41 to the output of the evaluation stage 3 and via a resistor R42 to a threshold potentiometer 47. Resistors R43, R44 determine the hysteresis of the comparator stage 4.
  • the threshold value potentiometer 47 is used to set the limit value for the response of the comparator stage 4.
  • a resistor R45 and a Zener diode D46 can be provided for a possibly necessary adaptation to the input level of the following logic.
  • the comparator stage 4 delivers a pulse at the output each time the set limit value is exceeded. These pulses are summed up in divider 5 up to a desired number. If this number is exceeded, there is a pulse at the output of the divider 5 and the counting process starts again.
  • the partial pulses are summed in the day counter 6, consisting of a counter module 62 and a reset device, which in the simplest case consists of a key 61 and a pull-up resistor R63, and in the total counter 7 and can optionally be provided on the display unit 9 with the display changeover switch 8 from a display driver 91 and a display 92 can be read.
  • the day counter 6 can be reset with the button 61. The values supplied by day counter 6 remain summed up in total counter 7.
  • the control display 12 consisting of a display driver 121 and a lamp 122, is activated when the counter reading of the total counter 7 corresponds to the one in the digital limit transmitter 11, e.g. can consist of a switch series 111 and a pull-up resistor network R112.
  • the counter reading of the total counter 7 in the digital comparator 10 is compared with the target value in the digital limit transmitter 11.
  • this function can be implemented by displaying the counter overflow from the total counter 7.
  • the circuit described so far counts all sensor values whose amount is above a certain value.
  • the evaluation level 3 ⁇ is further expanded by an integrator 3b and a zero point switch 3c.
  • the integrator 3b consists of an operational amplifier 30b, resistors R34, R35, a capacitor C31 and a switch T31.
  • the zero point switch 3c has a comparator 30c and resistors R36, R37, R38, R39. This embodiment is thus designed to exceed a certain positive or negative amplitude-time area in accordance with the integration of the positive or negative sensor signal over time.
  • the evaluation stage 3 ⁇ is designed as a differentiator, which consists of an operational amplifier 30 ⁇ , resistors R31 ⁇ , R32 ⁇ and a capacitor C31 ⁇ .
  • a resistor R33 ⁇ and a diode D31 ⁇ lead output signals to ground due to falling edges in the sensor signal.

Landscapes

  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
EP86117553A 1985-12-23 1986-12-17 Fixation de ski Expired - Lifetime EP0230007B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0373885A AT384369B (de) 1985-12-23 1985-12-23 Schibindung
AT3738/85 1985-12-23

Publications (3)

Publication Number Publication Date
EP0230007A2 true EP0230007A2 (fr) 1987-07-29
EP0230007A3 EP0230007A3 (en) 1988-03-23
EP0230007B1 EP0230007B1 (fr) 1991-05-22

Family

ID=3554723

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86117553A Expired - Lifetime EP0230007B1 (fr) 1985-12-23 1986-12-17 Fixation de ski

Country Status (4)

Country Link
US (1) US4750372A (fr)
EP (1) EP0230007B1 (fr)
AT (1) AT384369B (fr)
DE (1) DE3679395D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2750339B2 (ja) * 1989-09-06 1998-05-13 株式会社マルタカ 歩数計数装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2519544A1 (de) * 1974-05-07 1975-11-20 Antonio Nicholas F D Ski-sicherheitsbindung
DE2736027A1 (de) * 1976-09-02 1978-03-09 Salomon & Fils F Sicherheitsskibindung
WO1980001536A1 (fr) * 1979-02-05 1980-08-07 Battelle Memorial Institute Procede pour mesurer et analyser des potentiels d'origine piezo-electrique engendres par un organe rigide en un materiau organique
FR2510898A1 (fr) * 1981-08-06 1983-02-11 Look Sa Fixation de ski a affichage electronique de la durete de declenchement
FR2537443A1 (fr) * 1982-12-09 1984-06-15 Salomon & Fils F Dispositif indicateur de l'effort de declenchement d'une fixation de securite de ski

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777555A (en) * 1972-05-03 1973-12-11 Us Navy Cumulative fatigue life indicator
US4031366A (en) * 1975-10-30 1977-06-21 Howell Instruments, Inc. Low cycle fatigue damage counter
US4387307A (en) * 1980-07-29 1983-06-07 Antonio Nicholas D D Electronic safety ski binding release

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2519544A1 (de) * 1974-05-07 1975-11-20 Antonio Nicholas F D Ski-sicherheitsbindung
FR2269981A1 (fr) * 1974-05-07 1975-12-05 Antonio Nicholas
DE2736027A1 (de) * 1976-09-02 1978-03-09 Salomon & Fils F Sicherheitsskibindung
WO1980001536A1 (fr) * 1979-02-05 1980-08-07 Battelle Memorial Institute Procede pour mesurer et analyser des potentiels d'origine piezo-electrique engendres par un organe rigide en un materiau organique
FR2510898A1 (fr) * 1981-08-06 1983-02-11 Look Sa Fixation de ski a affichage electronique de la durete de declenchement
FR2537443A1 (fr) * 1982-12-09 1984-06-15 Salomon & Fils F Dispositif indicateur de l'effort de declenchement d'une fixation de securite de ski

Also Published As

Publication number Publication date
EP0230007A3 (en) 1988-03-23
DE3679395D1 (de) 1991-06-27
AT384369B (de) 1987-11-10
EP0230007B1 (fr) 1991-05-22
US4750372A (en) 1988-06-14
ATA373885A (de) 1987-04-15

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