EP1799520A1 - System for measuring pedal speed - Google Patents

System for measuring pedal speed

Info

Publication number
EP1799520A1
EP1799520A1 EP05798968A EP05798968A EP1799520A1 EP 1799520 A1 EP1799520 A1 EP 1799520A1 EP 05798968 A EP05798968 A EP 05798968A EP 05798968 A EP05798968 A EP 05798968A EP 1799520 A1 EP1799520 A1 EP 1799520A1
Authority
EP
European Patent Office
Prior art keywords
pedal
speed
signal
passage
sensor
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.)
Withdrawn
Application number
EP05798968A
Other languages
German (de)
French (fr)
Inventor
Lionel Cordesses
Mehdi Gati
Ophélie Thomassin
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Publication of EP1799520A1 publication Critical patent/EP1799520A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
    • B60T8/3255—Systems in which the braking action is dependent on brake pedal data
    • B60T8/3275—Systems with a braking assistant function, i.e. automatic full braking initiation in dependence of brake pedal velocity
    • 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

Definitions

  • the invention relates to a system for measuring a pedal speed, in particular for detecting an emergency braking situation for a motor vehicle.
  • Document US 5,607,209 proposes a system in which a computer receives information on the pressure in a hydraulic braking circuit.
  • the computer calculates a speed of variation of the pressure, and if this speed exceeds a predetermined threshold, diagnoses an emergency situation.
  • the computer controls assistance means to provide additional braking assistance.
  • the system of US 5,607,209 requires at least one pressure sensor and a device for digitizing the signal from the sensor.
  • the system with detector at the end of the race does not allow to take into account the speed of depression of the pedal. It only detects the emergency situation when the pedal reaches the end of the race.
  • the subject of the invention is a detection system for measuring a pedal speed comprising a pedal and a first pedal position sensor, a computer receiving a first signal from the first sensor indicating the passage of the pedal. a first position by the pedal.
  • the system further comprises a second position sensor delivering a signal indicating the passage of a second position by the pedal, the computer comprising means for measuring the passage time of the pedal between the first and the second position to determine the speed movement of the pedal.
  • the speed is determined by dividing a distance between the first and the second sensor by the passage time.
  • the distance is linear in the case of a sliding or angular pedal in the case of a swivel pedal.
  • the passage time is measured by a number of clock pulses during the passage time.
  • the passage time is measured by the rise of an electrical quantity during the passage time.
  • the pedal is a brake pedal
  • the computer determining an occurrence of emergency situation if the pedal is depressed and if the driving speed is greater than a predetermined threshold.
  • the first position is one-third of the race after the start of the pedal stroke
  • the second position is two-thirds of the race after the start of the pedal stroke. This gives the speed information before reaching the end of the race.
  • Figure 1 is a schematic view of a system according to 1 ' invention
  • Figure 2 is a timing diagram of different signals.
  • a system according to the invention is schematically shown in Figure 1.
  • the system comprises a pedal 1, for example brake, pivotally mounted about an axis A, integral with the body of a motor vehicle, not shown.
  • the pedal 1 is movable between a starting position I shown in bold lines in Figure 1, and a depressed position II, shown in phantom, in which the pedal is at the end of the race.
  • the system further comprises a first 11 and a second sensor 12 integral with the bodywork.
  • the sensors respectively deliver a first cl and a second signal c2 to a computer 2.
  • the computer 2 delivers a speed signal V representative of the angular velocity V of depression or relaxation of the pedal.
  • the signals cl and c2 are binary signals.
  • the first signal cl switches when the pedal 1 passes through a first position after pivoting a first angle ⁇ l from the starting position I.
  • the second signal c2 switches when the pedal 1 passes through a second position after pivoting a second angle cc2 from the starting position I.
  • the signal cl goes to a high state at a time tl at the passage of the pedal 1 before the first sensor 11, then returns to a low state after the passage, as shown in Figure 2.
  • the second signal c2 goes to a high state at a time t2 at the passage of the pedal 1 in front of the second sensor 12, then returns to a low state after the passage.
  • a signal g is generated by the computer.
  • the signal g goes from the low state to the high state on a rising edge of cl, at the instant t1, and goes from the high state to the low state on a rising edge of c2, at the instant t2.
  • the computer determines the transit time ⁇ t, which is the time during which the signal g is in the high state.
  • This transit time ⁇ t can be determined, in a first variant, by the final voltage or the intensity of an electric signal f evolving linearly from an initial value and according to a predetermined growth rate while the signal g is in the high state.
  • the voltage or intensity reached at time t2 represents the passage time ⁇ t.
  • the computer 2 counts the number of pulses of a signal f which transmits a clock signal clocked at a predetermined frequency while the signal g is in the high state.
  • the number of pulses for example obtained by counting the number of falling edges of the clock signal, divided by the frequency of the clock represents the passage time ⁇ t.
  • the computer determines an estimate of the angular velocity V of displacement of the pedal by the formula:
  • the computer then delivers the signal V to other computers or uses it for other treatments.
  • the signal V can be used, in the case where the pedal is a brake pedal as in the prior art exposed, to determine the occurrence of an emergency situation if the speed V and above a predetermined threshold.
  • the driving speed can be used to modify the assistance law.
  • the invention is not limited to the embodiment which has just been described by way of example.
  • the pedal can be linear displacement, the positions of the sensors being expressed in linear distance.
  • the system may also indicate in a complementary manner the direction of movement (depressing or releasing the pedal).

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Braking Elements And Transmission Devices (AREA)
  • Mechanical Control Devices (AREA)

Abstract

The invention concerns a detecting system for measuring the speed (V) of a pedal comprising a pedal (1), a first sensor (11) for sensing the position of the pedal delivering a first signal (c1) indicating the passage of a first position by the pedal, a second position sensor (12) delivering a second signal (c2) indicating the passage of a second position by the pedal (1), a calculator receiving the signals c1 and c2, the calculator (2) comprising means for measuring the intermediate time (?t) of the pedal between the first (a1) and the second (a2) position to determine the travelling speed (V) of the pedal.

Description

Système de mesure d'une vitesse de pédale. System for measuring a pedal speed.
L'invention concerne un système de mesure d'une vitesse de pédale, en particulier pour la détection d'une situation de freinage d'urgence pour un véhicule automobile.The invention relates to a system for measuring a pedal speed, in particular for detecting an emergency braking situation for a motor vehicle.
Lorsqu'un conducteur conduit un véhicule automobile, il rencontre des situations d'urgence dans lesquelles il souhaite arrêter ou ralentir fortement le véhicule dans un délai très court. Pour cela, il enfonce rapidement et fortement une pédale de frein.When a driver drives a motor vehicle, he encounters emergency situations in which he wants to stop or slow down the vehicle in a very short time. For this, it quickly and strongly depresses a brake pedal.
On a proposé de détecter cette situation pour fournir dans ces situations d'urgence une assistance supplémentaire au freinage. Le document US 5 607 209 propose un système dans lequel un calculateur reçoit une information de la pression dans un circuit hydraulique de freinage. Le calculateur calcule une vitesse de variation de la pression, et si cette vitesse dépasse un seuil prédéterminé, diagnostique une situation d'urgence. Dans ce cas, le calculateur commande des moyens d'assistance pour fournir une assistance supplémentaire au freinage.It has been proposed to detect this situation to provide additional braking assistance in these emergency situations. Document US 5,607,209 proposes a system in which a computer receives information on the pressure in a hydraulic braking circuit. The computer calculates a speed of variation of the pressure, and if this speed exceeds a predetermined threshold, diagnoses an emergency situation. In this case, the computer controls assistance means to provide additional braking assistance.
On connaît également des systèmes de détection de situation d'urgence dans lesquels un capteur détecte que la pédale est arrivée en fin de course d'enfoncement. La situation d'urgence correspond donc à la situation dans laquelle le conducteur a enfoncé la pédale de frein jusqu'au bout de la course.Emergency detection systems are also known in which a sensor detects that the pedal has reached the end of the driving stroke. The emergency situation therefore corresponds to the situation in which the driver has depressed the brake pedal until the end of the race.
Cependant, le système du document US 5 607 209 nécessite au moins un capteur de pression et un dispositif de numérisation du signal issu du capteur. Par ailleurs, le système avec détecteur en fin de course ne permet pas de prendre en compte la vitesse d'enfoncement de la pédale. Il ne permet de détecter la situation d'urgence que lorsque la pédale atteint la fin de course.However, the system of US 5,607,209 requires at least one pressure sensor and a device for digitizing the signal from the sensor. In addition, the system with detector at the end of the race does not allow to take into account the speed of depression of the pedal. It only detects the emergency situation when the pedal reaches the end of the race.
C'est donc un objectif de l'invention de proposer un système de mesure d'une vitesse de pédale qui soit simple.It is therefore an object of the invention to provide a system for measuring a pedal speed that is simple.
Avec cet objectif en vue, l'invention a pour objet un système de détection de mesure d'une vitesse de pédale comportant une pédale et un premier capteur de position de la pédale, un calculateur recevant un premier signal du premier capteur indiquant le passage d'une première position par la pédale. Le système comporte en outre un deuxième capteur de position délivrant un signal indiquant le passage d'une deuxième position par la pédale, le calculateur comportant des moyens de mesure du temps de passage de la pédale entre la première et la deuxième position pour déterminer la vitesse de déplacement de la pédale.With this objective in view, the subject of the invention is a detection system for measuring a pedal speed comprising a pedal and a first pedal position sensor, a computer receiving a first signal from the first sensor indicating the passage of the pedal. a first position by the pedal. The system further comprises a second position sensor delivering a signal indicating the passage of a second position by the pedal, the computer comprising means for measuring the passage time of the pedal between the first and the second position to determine the speed movement of the pedal.
On dispose ainsi d'un système de détermination d'une vitesse de pédale qui est simple, puisqu'il ne fait appel qu'à deux capteurs de position tels que des contacteurs mécaniques. On peut aussi utiliser des capteurs optiques, magnétiques, ou à effet Hall.There is thus a system for determining a pedal speed that is simple, since it uses only two position sensors such as mechanical contactors. It is also possible to use optical, magnetic or Hall effect sensors.
De préférence, la vitesse est déterminée en divisant une distance entre le premier et le deuxième capteur par le temps de passage. La distance est linéaire dans le cas d'une pédale coulissante ou angulaire dans le cas d'une pédale pivotante.Preferably, the speed is determined by dividing a distance between the first and the second sensor by the passage time. The distance is linear in the case of a sliding or angular pedal in the case of a swivel pedal.
Selon un mode de réalisation, le temps de passage est mesuré par un nombre d'impulsions d'horloge pendant le temps de passage.According to one embodiment, the passage time is measured by a number of clock pulses during the passage time.
Selon un mode de réalisation, le temps de passage est mesuré par l'élévation d'une grandeur électrique pendant le temps de passage.According to one embodiment, the passage time is measured by the rise of an electrical quantity during the passage time.
De manière particulière, la pédale est une pédale de frein, le calculateur déterminant une occurrence de situation d'urgence si la pédale est enfoncée et si la vitesse d'enfoncement est supérieure à un seuil prédéterminé.In particular, the pedal is a brake pedal, the computer determining an occurrence of emergency situation if the pedal is depressed and if the driving speed is greater than a predetermined threshold.
De préférence, la première position est située à un tiers de la course après le début de la course de la pédale, et la deuxième position est située à deux tiers de la course après le début de la course de la pédale. On obtient ainsi l'information de vitesse avant l'atteinte de la fin de course.Preferably, the first position is one-third of the race after the start of the pedal stroke, and the second position is two-thirds of the race after the start of the pedal stroke. This gives the speed information before reaching the end of the race.
L'invention sera mieux comprise et d'autres particularités et avantages apparaîtront à la lecture de la description qui va suivre, la description faisant référence aux dessins annexés parmi lesquels : - la figure 1 est une vue schématique d'un système conforme à 1 ' invention ; la figure 2 est un diagramme temporel de différents signaux.The invention will be better understood and other features and advantages will appear on reading the description which follows, the description referring to the appended drawings among which: - Figure 1 is a schematic view of a system according to 1 ' invention; Figure 2 is a timing diagram of different signals.
Un système conforme à 1 ' invention est représenté de manière schématique sur la figure 1. Le système comporte une pédale 1, par exemple de frein, montée pivotante autour d'un axe A, solidaire de la carrosserie d'un véhicule automobile, non représentée. La pédale 1 est mobile entre une position de départ I représentée en traits forts sur la figure 1, et une position enfoncée II, représentée en traits mixtes, dans laquelle la pédale est en fin de course.A system according to the invention is schematically shown in Figure 1. The system comprises a pedal 1, for example brake, pivotally mounted about an axis A, integral with the body of a motor vehicle, not shown. The pedal 1 is movable between a starting position I shown in bold lines in Figure 1, and a depressed position II, shown in phantom, in which the pedal is at the end of the race.
Le système comporte en outre un premier 11 et un deuxième capteur 12 solidaires de la carrosserie. Les capteurs délivrent respectivement un premier cl et un deuxième signal c2 à un calculateur 2. Le calculateur 2 délivre un signal de vitesse V représentatif de la vitesse V angulaire d'enfoncement ou de relâchement de la pédale.The system further comprises a first 11 and a second sensor 12 integral with the bodywork. The sensors respectively deliver a first cl and a second signal c2 to a computer 2. The computer 2 delivers a speed signal V representative of the angular velocity V of depression or relaxation of the pedal.
Comme on le voit sur la figure 2, les signaux cl et c2 sont des signaux binaires. Le premier signal cl commute lorsque la pédale 1 passe par une première position après un pivotement d'un premier angle αl depuis la position de départ I. De même, le deuxième signal c2 commute lorsque la pédale 1 passe par une deuxième position après un pivotement d'un deuxième angle cc2 depuis la position de départ I .As seen in Figure 2, the signals cl and c2 are binary signals. The first signal cl switches when the pedal 1 passes through a first position after pivoting a first angle αl from the starting position I. Similarly, the second signal c2 switches when the pedal 1 passes through a second position after pivoting a second angle cc2 from the starting position I.
Lorsque qu'un conducteur appuie sur la pédale 1, et que la pédale 1 passe de la position de départ I à la position d'enfoncement II, le signal cl passe à un état haut à un instant tl au passage de la pédale 1 devant le premier capteur 11, puis revient à un état bas après le passage, comme le montre la figure 2. De même, le deuxième signal c2 passe à un état haut à un instant t2 au passage de la pédale 1 devant le deuxième capteur 12, puis revient à un état bas après le passage.When a driver presses the pedal 1, and the pedal 1 moves from the starting position I to the depression position II, the signal cl goes to a high state at a time tl at the passage of the pedal 1 before the first sensor 11, then returns to a low state after the passage, as shown in Figure 2. Similarly, the second signal c2 goes to a high state at a time t2 at the passage of the pedal 1 in front of the second sensor 12, then returns to a low state after the passage.
Dans un mode de réalisation particulier, un signal g est généré par le calculateur. Le signal g passe de l'état bas à l'état haut sur un front montant de cl, à l'instant tl, et passe de l'état haut à 1 ' état bas sur un front montant de c2, à l'instant t2. Le calculateur détermine alors le temps de passage Δt, qui est la durée pendant laquelle le signal g est à l'état haut. Ce temps de passage Δt peut être déterminé, dans une première variante, par la tension ou l'intensité en final d'un signal f électrique évoluant de manière linéaire à partir d'une valeur initiale et selon un taux de croissance prédéterminé pendant que le signal g est à l'état haut. La tension ou l'intensité atteinte à l'instant t2 représente le temps de passage Δt.In a particular embodiment, a signal g is generated by the computer. The signal g goes from the low state to the high state on a rising edge of cl, at the instant t1, and goes from the high state to the low state on a rising edge of c2, at the instant t2. The computer then determines the transit time Δt, which is the time during which the signal g is in the high state. This transit time Δt can be determined, in a first variant, by the final voltage or the intensity of an electric signal f evolving linearly from an initial value and according to a predetermined growth rate while the signal g is in the high state. The voltage or intensity reached at time t2 represents the passage time Δt.
Dans une deuxième variante, le calculateur 2 compte le nombre d'impulsions d'un signal f qui transmet un signal d'horloge cadencé à une fréquence prédéterminée pendant que le signal g est à l'état haut. Le nombre d'impulsions, par exemple obtenu par le comptage du nombre de fronts descendants du signal d'horloge, divisé par la fréquence de l'horloge représente le temps de passage Δt.In a second variant, the computer 2 counts the number of pulses of a signal f which transmits a clock signal clocked at a predetermined frequency while the signal g is in the high state. The number of pulses, for example obtained by counting the number of falling edges of the clock signal, divided by the frequency of the clock represents the passage time Δt.
A partir de 1 'information du temps de passage Δt, le calculateur détermine une estimation de la vitesse V angulaire de déplacement de la pédale par la formule :From the information of the passage time Δt, the computer determines an estimate of the angular velocity V of displacement of the pedal by the formula:
V=(α2-αl)/Δt Le calculateur délivre alors le signal V à d'autres calculateurs ou l'utilise pour d'autres traitements. Le signal V peut servir, dans le cas où la pédale serait une pédale de frein comme dans l'art antérieur exposé, à déterminer l'occurrence d'une situation d'urgence si la vitesse V et supérieure à un seuil prédéterminé. Pour un véhicule équipé d'un système d'assistance à l'embrayage, la vitesse d'enfoncement peut être utilisée pour modifier la loi d'assistance.V = (α2-aL) / .DELTA.t The computer then delivers the signal V to other computers or uses it for other treatments. The signal V can be used, in the case where the pedal is a brake pedal as in the prior art exposed, to determine the occurrence of an emergency situation if the speed V and above a predetermined threshold. For a vehicle equipped with a clutch assistance system, the driving speed can be used to modify the assistance law.
L'invention n'est pas limitée au mode de réalisation qui vient d'être décrit à titre d'exemple. La pédale peut être à déplacement linéaire, les positions des capteurs étant exprimées en distance linéaire. Le système peut également indiquer de manière complémentaire le sens du déplacement (enfoncement ou relâchement de la pédale) . The invention is not limited to the embodiment which has just been described by way of example. The pedal can be linear displacement, the positions of the sensors being expressed in linear distance. The system may also indicate in a complementary manner the direction of movement (depressing or releasing the pedal).

Claims

REVENDICATIONS
1. Système de détection de mesure d'une vitesse (V) de pédale comportant une pédale (1) et un premier capteur (11) de position de la pédale, un calculateur (2) recevant un premier signal (cl) du premier capteur (11) indiquant le passage d'une première position par la pédale (1) , caractérisé en ce que le système comporte en outre un deuxième capteur (12) de position délivrant un deuxième signal1. A detection system for measuring a pedal speed (V) comprising a pedal (1) and a first pedal position sensor (11), a computer (2) receiving a first signal (C1) of the first sensor (11) indicating the passage of a first position by the pedal (1), characterized in that the system further comprises a second position sensor (12) delivering a second signal
(c2) indiquant le passage d'une deuxième position par la pédale (1), le calculateur (2) comportant des moyens de mesure du temps de passage (Δt) de la pédale entre la première (αl) et la deuxième position(c2) indicating the passage of a second position by the pedal (1), the computer (2) having means for measuring the passage time (Δt) of the pedal between the first (αl) and the second position
(α2) pour déterminer la vitesse (V) de déplacement de la pédale.(α2) to determine the speed (V) of movement of the pedal.
2. Système selon la revendication 1, dans lequel la vitesse (V) est déterminée en divisant une distance entre le premier (11) et le deuxième capteur (12) par le temps de passage (Δt) .2. System according to claim 1, wherein the speed (V) is determined by dividing a distance between the first (11) and the second sensor (12) by the passage time (Δt).
3. Système selon la revendication 2, dans lequel le temps de passage (Δt) est mesuré par un nombre d'impulsions d'horloge pendant le temps de passage (Δt) .3. System according to claim 2, wherein the passage time (Δt) is measured by a number of clock pulses during the passage time (Δt).
4. Système selon la revendication 2, dans lequel le temps de passage est mesuré par l'élévation d'une grandeur électrique pendant le temps de passage (Δt) .4. System according to claim 2, wherein the passage time is measured by the rise of an electrical quantity during the passage time (Δt).
5. Système selon la revendication 2, dans lequel la pédale (1) est une pédale de frein, le calculateur (2) déterminant une occurrence de situation d'urgence si la pédale (1) est enfoncée et si la vitesse (V) d'enfoncement est supérieure à un seuil prédéterminé.5. System according to claim 2, wherein the pedal (1) is a brake pedal, the computer (2) determining an occurrence of an emergency situation if the pedal (1) is depressed and the driving speed (V) is greater than a predetermined threshold.
6. Système selon la revendication 1, dans lequel la première position est située à un tiers de la course après le début de la course de la pédale (D •The system of claim 1, wherein the first position is one-third of the stroke after the start of the pedal stroke (D
7. Système selon la revendication 1, dans lequel la deuxième position est située à deux tiers de la course après le début de la course de la pédale (D • The system of claim 1, wherein the second position is two-thirds of the stroke after the start of the pedal stroke (D
EP05798968A 2004-09-22 2005-09-07 System for measuring pedal speed Withdrawn EP1799520A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0409990A FR2875602B1 (en) 2004-09-22 2004-09-22 SYSTEM FOR MEASURING A PEDAL SPEED
PCT/FR2005/050719 WO2006032805A1 (en) 2004-09-22 2005-09-07 System for measuring pedal speed

Publications (1)

Publication Number Publication Date
EP1799520A1 true EP1799520A1 (en) 2007-06-27

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EP05798968A Withdrawn EP1799520A1 (en) 2004-09-22 2005-09-07 System for measuring pedal speed

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US (1) US20080255797A1 (en)
EP (1) EP1799520A1 (en)
JP (1) JP2008513281A (en)
FR (1) FR2875602B1 (en)
WO (1) WO2006032805A1 (en)

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JP2008513281A (en) 2008-05-01
WO2006032805A1 (en) 2006-03-30
US20080255797A1 (en) 2008-10-16
FR2875602A1 (en) 2006-03-24
FR2875602B1 (en) 2006-11-17

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