WO2022189337A1 - Détection d'une anomalie de géométrie d'une roue de véhicule - Google Patents
Détection d'une anomalie de géométrie d'une roue de véhicule Download PDFInfo
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- WO2022189337A1 WO2022189337A1 PCT/EP2022/055709 EP2022055709W WO2022189337A1 WO 2022189337 A1 WO2022189337 A1 WO 2022189337A1 EP 2022055709 W EP2022055709 W EP 2022055709W WO 2022189337 A1 WO2022189337 A1 WO 2022189337A1
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- coordinate
- pitch
- sensor
- yaw
- predetermined range
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- 238000001514 detection method Methods 0.000 title claims description 10
- 230000033001 locomotion Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 35
- 230000001133 acceleration Effects 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 101000582320 Homo sapiens Neurogenic differentiation factor 6 Proteins 0.000 description 2
- 102100030589 Neurogenic differentiation factor 6 Human genes 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000012417 linear regression Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009172 bursting Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
- G01B21/26—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes for testing wheel alignment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0486—Signalling devices actuated by tyre pressure mounted on the wheel or tyre comprising additional sensors in the wheel or tyre mounted monitoring device, e.g. movement sensors, microphones or earth magnetic field sensors
- B60C23/0488—Movement sensor, e.g. for sensing angular speed, acceleration or centripetal force
Definitions
- the invention relates to the automotive field, and more particularly to a computer and a method for detecting an anomaly in the geometry of a vehicle wheel.
- a vehicle wheel may have certain geometry anomalies, for example parallelism, camber or wheel bolt tightening.
- the wheel has a parallelism anomaly when, in top view of the vehicle, the plane perpendicular to the axis of rotation of the wheel, called “plane of the wheel”, forms an angle with the vertical plane extending along the axis of movement of the vehicle, called “roll axis" X of the vehicle.
- the wheel has a camber anomaly when, in front view of the vehicle, the plane of the wheel forms an angle with the plane vertical extending along the yaw axis Z of the vehicle.
- a geometry anomaly can reduce driving comfort, in particular by causing vibrations in the steering wheel or by preventing correct centering of the steering wheel when the vehicle is traveling in a straight line, which can be dangerous for the occupants of the vehicle. .
- a geometry anomaly can also lead to a significant increase in fuel consumption. fuel and tire wear.
- the tires will wear on their ends in a non-uniform manner.
- non-uniformly defined wear may not be detected. If a worn tire is not changed in time, there remains a risk of the vehicle not holding the road and/or of the tire bursting, which again presents a danger for the occupants of the vehicle. It is therefore necessary to detect geometry anomalies as early as possible.
- the invention relates to a computer for a motor vehicle, said vehicle comprising a plurality of wheels allowing the vehicle to move on a road, at least one of said wheels comprising a sensor capable of measuring at least one value of a so-called "pitch” parameter allowing the computer to determine a so-called "pitch" coordinate of said sensor according to a predetermined so-called “pitch” axis orthogonal to the direction of movement of the vehicle and parallel to the plane of the road, with respect to a reference of said pitch axis, the computer being capable of: a) receiving from the sensor at least one value of the at least one pitch parameter, b) determining at least one pitch coordinate of the sensor with respect to the predetermined reference of the pitch axis from the at least one value received, c) detecting a geometry anomaly on the wheel comprising said sensor when at least one determined pitch coordinate is outside a first predetermined range of coordinate values on the pitch axis, centered on the predetermined reference of said pitch axis pitch between a minimum and a
- the computer according to the invention makes it possible to detect a geometry anomaly on at least one wheel of the vehicle and to inform the driver thereof, which makes the vehicle more secure for its occupants.
- the computer according to the invention allows the driver of the vehicle to know when an intervention by a professional is necessary to remedy the at least one geometry anomaly detected.
- the senor is capable of measuring at least two pitch parameter values and at least two values of a so-called “yaw” parameter, each yaw parameter value allowing the computer to determine the so-called “yaw” coordinate.
- the computer is capable of: a) receiving sensor at least two pitch parameter values and at least two yaw parameter values, b) determining at least two pitch coordinates from the received at least two pitch parameter values and at least two yaw coordinates from the at least two yaw parameter values received, c) defining at least two positions of the sensor, each position being defined in the plane comprising the pitch axis and the yaw axis by a pitch coordinate and a determined yaw coordinate, d) detecting a
- the computer is configured to detect a wheel camber anomaly comprising said sensor when: i) at least one position is defined such that its pitch coordinate is greater than the maximum of the first predetermined range and its yaw coordinate is greater than the maximum of the second predetermined range, and at least one position is defined such that its pitch coordinate is less than the minimum of the first predetermined range and its yaw coordinate is less than the minimum of the second predetermined range, or: ii) at least one position is defined such that its pitch coordinate is greater than the maximum of the first predetermined range and its yaw coordinate is less than the minimum of the second predetermined range, and at least one position is defined such that its pitch coordinate is less than the minimum of the first predetermined range and its yaw coordinate is greater than the maximum of the second predetermined range.
- each sensor is capable of measuring at least two pitch parameter values
- the vehicle comprises at least one second sensor, each second sensor being mounted in front of a wheel comprising a sensor and configured to measure at least two values of a so-called "yaw” parameter, each yaw parameter value enabling the computer to determine the so-called "yaw” coordinate of said sensor along a predetermined so-called “yaw” axis orthogonal to the direction of the displacement of the vehicle and orthogonal to the plane of the road with respect to a predetermined reference of said yaw axis
- the computer is capable of: a) receiving from the sensor at least two values of the pitch parameter and from the second sensor at least two values of the parameter yaw rate, b) determining at least two pitch coordinates from the at least two received pitch parameter values and at least two yaw coordinates from the at least two v received yaw parameter values, c) defining at least two positions of the sensor, each position being defined in the
- the computer is configured to detect a wheel camber anomaly comprising said sensor when: i) at least one position is defined such that its pitch coordinate is greater than the maximum of the first range predetermined range and its yaw coordinate is greater than the maximum of the second predetermined range, and at least one position is defined such that its pitch coordinate is less than the minimum of the first predetermined range and its yaw coordinate is less than the minimum of the second predetermined range, or: ii) at least one position is defined such that its pitch coordinate is greater than the maximum of the first predetermined range and its yaw coordinate is less than the minimum of the second predetermined range, and at least one position is defined such that its pitch coordinate is less than the minimum of the first predetermined range and its yaw coordinate is su greater than the maximum of the second predetermined range.
- the senor is able to measure at least two values of the pitch parameter and at least two values of a so-called "roll” parameter, each roll parameter value allowing the computer to determine the so-called coordinate "roll” of said sensor along a so-called “roll” axis predetermined parallel to the direction of movement of the vehicle with respect to a predetermined reference of said roll axis
- the computer is able to: a) receive from the sensor at least two values of the pitch parameter and at least two values of the roll parameter, b ) determining at least two pitch coordinates from the at least two pitch parameter values received and at least two roll coordinates from the at least two roll parameter values received, c) defining at least two positions of the sensor, each position being defined in the plane comprising the pitch axis and the roll axis by a determined pitch coordinate and a roll coordinate, d) detecting an anomaly in parallelism of the wheel comprising said sensor when: i) at least a position is defined such that its pitch coordinate is greater than the maximum of
- the second sensor is a wheel rotation speed sensor.
- the second sensor is a sensor of an anti-lock system of the wheels of the vehicle.
- the invention also relates to a vehicle comprising a plurality of wheels allowing the vehicle to move on a road, said vehicle comprising a computer as presented above, at least one of said wheels comprises a sensor capable of measuring at least a so-called "pitch” parameter allowing the computer to determine the so-called "pitch" coordinate of said sensor according to a predetermined so-called “pitch” axis orthogonal to the direction of movement of the vehicle and parallel to the plane of the road, with respect to a predetermined reference of said pitch axis.
- the invention also relates to a method for detecting an anomaly in the geometry of a wheel of a vehicle, implemented by a computer as presented previously, the method being remarkable in that it comprises the steps of: a) reception of at least one value of the at least one pitch parameter sent by at least one sensor, b) determination of at least one pitch coordinate with respect to the predetermined reference of the pitch axis from the at least one value received, c) detection of a geometry anomaly on the wheel comprising said sensor when said at least one determined pitch coordinate is outside a first predetermined range of coordinate values on the pitch axis, centered on the predetermined reference of said pitch axis, d) alert, by sending an alert message to the driver of the vehicle, when an anomaly has been detected.
- the invention also relates to a computer program product remarkable in that it comprises a set of code instructions for program which, when they are executed by one or more processors, configure the processor or processors to implement a method as presented above.
- Figure 1 shows a top view of a vehicle with a parallelism anomaly
- Figure 2 shows a top view of a vehicle with another form of parallelism anomaly
- Figure 3 shows a front view of a vehicle with a camber anomaly
- Figure 4 shows a front view of a vehicle with another form of camber anomaly
- Figure 5 shows a top view of a vehicle according to the invention
- Figure 6 shows a wheel of the vehicle, shown in Figure 5, along a pitch axis
- Figure 7 shows a wheel of the vehicle, shown in Figure 5, in a plane defined by a pitch axis and a yaw axis,
- Figure 8 shows a wheel of the vehicle, shown in Figure 5, in a plane defined by a pitch axis and a roll axis,
- Figure 9 shows a wheel of the vehicle, shown in Figure 5, in a three-dimensional frame defined by a pitch axis, a yaw axis and a roll axis,
- FIG. 10 represents a plurality of values of pitch coordinates determined on a pitch axis with respect to a predetermined reference, according to the invention
- FIG. 11 represents a plurality of positions in a plane defined by a pitch axis and a yaw axis, with respect to a predetermined reference, according to the invention
- FIG. 12 represents a plurality of positions in a plane defined by a pitch axis and a yaw axis, different from the plurality of positions represented in FIG. 11, with respect to a predetermined reference, according to the invention
- FIG. 13 represents a plurality of positions in a plane defined by a pitch axis and a roll axis, with respect to a predetermined reference, according to the invention
- FIG. 14 represents a plurality of positions in a plane defined by a pitch axis and a roll axis, different from the plurality of positions represented in FIG. 13, with respect to a predetermined reference, according to the invention
- Figure 15 illustrates the method according to the invention.
- the invention will be presented with a view to implementation in a motor vehicle.
- the vehicle 1 is defined in particular in an orthogonal three-dimensional reference frame in which: a) a first axis called “pitch axis" Y is defined as a predetermined axis orthogonal to the direction of movement of the vehicle 1 and parallel to the plane of the road, b) a second axis called the “yaw axis" Z is defined as a predetermined axis orthogonal to the direction of movement of the vehicle 1 and orthogonal to the plane of the road, c) a third axis, said "roll axis" X is defined as an axis parallel to the direction of movement of the vehicle 1.
- the vehicle 1 comprises a plurality of wheels 10 to move on a road, and a computer 30.
- the vehicle 1 comprises four wheels 10.
- the wheels 10 are also defined according to said three-dimensional reference.
- At least one of said wheels 10 includes a sensor 20. Still with reference to Figure 5, preferably each wheel 10 of vehicle 1 includes a sensor 20.
- each wheel 10 rotates along the plane perpendicular to the axis of rotation of said wheel 10, called “wheel plane”.
- wheel plane perpendicular to the axis of rotation of said wheel 10.
- the senor 20 is able to measure at least one value of a so-called "pitch" parameter allowing the computer 30 to determine the coordinate on the axis of pitch Y, called “pitch coordinate”, of said sensor 20 with respect to a predetermined reference R0.
- the predetermined reference R0 corresponds in particular to the point of the pitch axis Y located in the plane of the wheel 10 comprising said sensor 20, when the wheel 10 is correctly mounted on the vehicle 1.
- the term “correctly mounted” is understood to mean , a wheel which would be mounted on the hub of a vehicle without geometry anomaly, in other words without faulty parallelism, without faulty camber and whose nuts are tight.
- the pitch parameter value can for example be an acceleration value of the wheel 10.
- the senor 20 is also able to measure at least one value of a so-called “yaw” parameter allowing the computer to determine the coordinate on the axis of yaw Z, called “yaw coordinate", of said sensor 20 with respect to the predetermined reference R0.
- the value of the yaw parameter can also correspond to an acceleration value of wheel 10.
- the sensor 20 is able to measure at least one value of a pitch parameter and to measure at least one value of a so-called “roll” parameter. allowing the computer to determine the coordinate on the roll axis X, called “roll coordinate”, of said sensor 20 with respect to the predetermined reference R0.
- the value of the roll parameter can in particular correspond to an acceleration value of wheel 10.
- the senor 20 is able to measure at least one value of the yaw parameter, at least one value of the roll parameter and at least one value of the pitch parameter .
- the sensor 20 is also able to send the at least one value of the measured parameter, in other words, the measured pitch parameter, to the computer 30.
- the senor 20 is also capable of sending the at least one yaw parameter value measured to the computer 30.
- the sensor 20 is also capable of sending the at least one measured roll parameter value to the computer 30.
- the senor 20 is configured to send at least one parameter value, pitch, yaw or roll, associated with an identifier, allowing the computer 30 to identifying from which sensor 20 said parameter value was sent.
- the sensor 20 can be an accelerometer, and in particular the accelerometer of the TPMS sensor, for "Tire Pressure Monitoring System” in English, making it possible in particular to measure the pressure of the tire of the wheel 10 of the vehicle 1 in which is mounted the TPMS sensor.
- the TPMS sensor is already known to those skilled in the art, and will therefore not be described in more detail here.
- the vehicle 1 comprises at least one second sensor. More precisely, each second sensor is mounted on the vehicle 1, in front of a wheel 10 of the vehicle 1 comprising a sensor 20.
- the vehicle 1 comprises as many second sensors as there are wheels 10.
- the second sensor is in particular able to measure at least one yaw parameter allowing the computer 30 to determine the yaw coordinate of the sensor 20 mounted in the wheel 10.
- the yaw parameter can correspond to a rotational speed value of wheel 10.
- the second sensor may be a wheel rotation speed sensor 10, for example used by an anti-lock braking system 10 with which the vehicle 1 is equipped and commonly referred to as an "ABS" system by those skilled in the art, to “Antiblockiersystem” in German language.
- ABS anti-lock braking system
- the second sensor is capable of sending each yaw parameter value measured to the computer 30, associated with an identifier, allowing the computer 30 to identify from which second sensor said yaw parameter value was sent.
- the computer 30 is thus mounted in the vehicle 1, and in particular, in a substantially central position inside the vehicle 1.
- the computer 30 is connected to each sensor 20 mounted in a wheel 10 of the vehicle 1.
- the vehicle 1 comprises a plurality of wheels 10 and each wheel 10 of the vehicle 1 comprises a sensor 20, the computer 30 is connected to a plurality of sensors 20.
- the computer 30 is connected to four sensors 20.
- the computer 30 is connected to each sensor 20 by a connection link of the non-wired type.
- the computer 30 is connected to each sensor 20 via a radio frequency connection.
- the computer 30 can also be connected to the at least one second sensor 20 via a second connection link, in particular of the Radiofrequency type, for example in Ultra high Frequency at 315 MHz or at 433 MHz or even a link low-consumption Bluetooth connection, for "Bluetooth Low Energy" in English, at 2.4 GHz.
- a second connection link in particular of the Radiofrequency type, for example in Ultra high Frequency at 315 MHz or at 433 MHz or even a link low-consumption Bluetooth connection, for "Bluetooth Low Energy" in English, at 2.4 GHz.
- the computer 30 is thus configured to receive at least one value of a parameter measured and sent by at least one sensor 20 via the connection link and/or by at least a second sensor via the second connection link.
- the computer 30 is capable of receiving at least one pitch parameter value measured and sent by at least one sensor 20.
- the computer 30 is also capable of receiving at least one roll parameter value and/or at least one yaw parameter value measured and sent by at least one sensor 20.
- the computer 30 is also capable of receiving at least one yaw parameter value measured and sent by at least one second sensor.
- the computer 30 is configured to receive the at least one pitch parameter value, yaw parameter value and roll parameter value measured by a sensor 20 mounted in said wheel 10.
- the computer 30 is configured to receive the at least one pitch parameter value and the at least one roll parameter value measured by the sensor 20 and the at least one yaw measured by the second sensor.
- the computer 30 is also configured to identify which sensor 20, or second sensor, has sent the value of the pitch parameter, of the yaw parameter or of the roll parameter received. For this, the computer 30 uses the identifier associated with the pitch, yaw or roll parameter value received. In other words, the computer 30 is configured to identify from which wheel 10 of the vehicle 1 comes the value of the pitch parameter, of the yaw parameter or of the roll parameter received.
- the computer 30 is configured to determine a pitch coordinate of the sensor 20 having sent said value of the pitch parameter, with respect to the predetermined reference R0 from the value of the pitch parameter received.
- the computer 30 is configured to determine a yaw coordinate of the sensor 20, with respect to the predetermined reference R0 from the value of the yaw parameter received by computer 30 and sent by sensor 20 or the second sensor.
- the computer 30 is configured to determine a roll coordinate of the sensor 20, having sent said value of the parameter roll, with respect to the predetermined reference R0 from the value of the roll parameter received.
- the computer 30 is configured to detect a geometry anomaly on a wheel 10 of the rotating vehicle 1, if at least one determined pitch coordinate of the sensor 20 mounted in said wheel 10, is in outside a first predetermined range P1.
- the first predetermined range P1 designates a set of coordinate values on a pitch axis Y, centered on the predetermined reference R0 of said pitch axis Y between a minimum and a maximum.
- the first predetermined range P1 comprises all the coordinate values between a minimum value and a maximum value centered on the predetermined reference R0.
- the first range P1 is notably defined according to the sensitivity of the sensor 20.
- the first range P1 is notably determined by the manufacturer.
- the first range P1 is determined during the first use of the vehicle 1. For example, during the first run of the vehicle 1, the position of each wheel 10 is determined in the three-dimensional reference frame, and defined as being the reference position of said wheel 10, in other words, the position in which said wheel 10 is correctly placed. Thus, the first range is determined according to said determined reference position of each wheel 10.
- the first predetermined range P1 designates a set of pitch coordinate values comprised between ⁇ 2.5 mm and 2.5 mm.
- the computer 30 is also configured to alert the driver of the detection of a geometry anomaly. More precisely, the computer 30 is configured to alert on which wheel(s) 10 a geometry anomaly has been detected.
- the computer 30 alerts the driver by issuing an alert message, for example an audible signal in the passenger compartment of the vehicle 1 or by displaying a light signal, for example on the dashboard, visible to the driver.
- an alert message for example an audible signal in the passenger compartment of the vehicle 1 or by displaying a light signal, for example on the dashboard, visible to the driver.
- the computer 30 is configured to detect that the geometry anomaly detected on a wheel 10 of the vehicle 1 is a tightening anomaly, from at least two positions of the sensor 20 mounted in said wheel 10 in rotation. Each position is here defined in the plane comprising the pitch axis Y and the yaw axis Z by a pitch coordinate and a yaw coordinate determined by the computer 30.
- the tightening designates here the tightening of the bolts of the wheel 10 and makes it possible to fix the wheel 10 to the corresponding hub and therefore to make the wheel 10 immobile with respect to the hub.
- the tightening anomaly is detected according to the first predetermined range P1 and a second predetermined range P2.
- the second predetermined range P2 designates a set of coordinate values on a yaw axis Z, centered on the center of wheel 10, between a minimum and a maximum, when the wheel 10 has been correctly mounted in the vehicle 1.
- the second predetermined range P2 comprises all the values of yaw coordinates between a minimum value and a maximum value centered on the center of the wheel 10 .
- the second range P2 is notably defined according to the sensitivity of the sensor 20 mounted in said wheel 10 or of the second sensor. Moreover, the second range P2 is in particular determined by the manufacturer.
- the second range P2 is determined during the first use of the vehicle 1 .
- the second range P2 is determined according to said determined reference position of each wheel 10.
- the second predetermined range P2 designates a set of yaw coordinate values comprised between ⁇ 2.5 mm and 2.5 mm.
- certain zones are predefined in the plane comprising a pitch axis Y and a yaw axis Z: a) a first zone Z1 defines the zone for which the coordinate pitch is less than the minimum value of the first predetermined range P1 and the yaw coordinate is greater than the maximum value of the second predetermined range P2, b) a second zone Z2 defines the zone for which the pitch coordinate is greater than the maximum value of the first predetermined range P1 and the yaw coordinate is greater than the maximum value of the second predetermined range P2, c) a third zone Z3 defines the zone for which the pitch coordinate is lower than the minimum value of the first predetermined range P1 and the yaw coordinate is less than the minimum value of the second predetermined range P2, d) a fourth zone Z4 defines the zone for which the he pitch coordinate is greater than the maximum value of the first predetermined range P1 and the yaw coordinate is less than the minimum value of the second predetermined
- the computer 30 is configured to detect a wheel 10 tightening anomaly if: a) at least one position of the sensor 20 mounted in the wheel 10 is located in the first zone Z1 and at least one position of the sensor 20 is located in the second zone Z2, or b) at least one position of the sensor 20 mounted in the wheel 10 is located in the third zone Z3 and at least one position of the sensor 20 is located in the fourth zone Z4, or c) at at least one position of sensor 20 mounted in wheel 10 is located in first zone Z1 and at least one position of sensor 20 is located in third zone Z3, or d) at least one position of sensor 20 mounted in wheel 10 is located in the second zone Z2 and at least one position of the sensor 20 is located in the fourth zone Z4.
- the computer 30 is configured to detect that the wheel geometry anomaly 10 is a parallelism or camber anomaly.
- the computer 30 is also configured to alert the driver of the detection of a tightening anomaly. More precisely, the computer 30 is configured to alert on which wheel(s) 10 a tightening anomaly has been detected.
- the computer 30 alerts the driver via the transmission of an alert message, for example an audible signal in the passenger compartment of the vehicle 1 or the display of a light signal, for example on the dashboard, visible to the driver.
- an alert message for example an audible signal in the passenger compartment of the vehicle 1 or the display of a light signal, for example on the dashboard, visible to the driver.
- the computer 30 is configured to detect that the geometry anomaly detected on a wheel 10 of the vehicle 1 is a camber anomaly, from at least two positions of the sensor 20 mounted in said wheel 10 in rotation. Each position is defined in the plane comprising the pitch axis Y and the yaw axis Z, by a pitch coordinate and a yaw coordinate determined by the computer 30.
- the camber designates the angle Q between the orthogonal projection of the plane of the wheel 10 in the plane defined by the pitch axis Y and the yaw axis Z, provided that this projection is a straight line, and the yaw axis Z.
- camber anomaly is detected according to the first predetermined range P1 and the second predetermined range P2.
- the wheel 10 has a camber anomaly when, in front view of the vehicle, the projection of the plane of the wheel 10, in the plane defined by the pitch axis Y and the yaw axis Z, forms a angle Q with the yaw axis Z (as shown for example in Figures 3 and 4).
- the computer 30 is configured to detect a camber anomaly of a wheel 10 if: a) at least one position of the sensor 20 mounted in the wheel 10 is located in the first zone Z1 and at least one position of sensor 20 is located in fourth zone Z4, and no position is in second zone Z2 and third zone Z3, or b) at least one position of sensor 20 mounted in wheel 10 is located in the second zone Z2 and at least one position of the sensor 20 is located in the third zone Z3, and no position is in the first zone Z1 and the fourth zone Z4.
- the computer 30 is also configured to alert the driver of the detection of a camber anomaly. More precisely, the computer 30 is configured to alert on which wheel(s) 10 a camber anomaly has been detected.
- the computer 30 alerts the driver via the transmission of an alert message, for example an audible signal in the passenger compartment of the vehicle 1 or the display of a light signal, for example on the dashboard. , visible to the driver.
- an alert message for example an audible signal in the passenger compartment of the vehicle 1 or the display of a light signal, for example on the dashboard. , visible to the driver.
- the computer 30 is also configured to determine whether the camber angle Q of the detected camber anomaly is positive or negative.
- the camber angle Q defines the angle between the projection of the plane of the wheel 10 in the plane defined by the pitch axis Y and the yaw axis Z, provided that this projection or a straight line, and the yaw axis Z, as shown in Figure 12.
- the camber angle Q is positive if the upper part of the wheel plane 10 is oriented towards the outside of the vehicle 1 (as illustrated in FIG. 4), and the camber angle Q is negative if the upper part of the wheel plane 10, is oriented towards the interior of the vehicle 1 (as illustrated in Figure 3).
- the computer 30 is configured to determine that the camber angle Q is positive if at least one position of the sensor 20 mounted in the wheel 10 is located in the first zone Z1 and at least one position of the sensor 20 is located in the fourth zone Z4 (and no position is in the second zone Z2 and the third zone Z3).
- the computer 30 is configured to determine that the camber angle Q is negative if at least one position of the sensor 20 mounted in the wheel 10 is located in the second zone Z2 and at least one position of the sensor 20 is located in the third zone Z3 (and no position is in the first zone Z1 and the fourth zone Z4).
- the computer 30 is configured to determine that the camber angle Q is positive if at least one position of the sensor 20 mounted in the wheel 10 is located in the second zone Z2 and at least one position of the sensor 20 is located in the third zone Z3 (and no position is in the first zone Z1 and the fourth zone Z4).
- the computer 30 is configured to determine that the camber angle Q is negative if at least one position of the sensor 20 mounted in the wheel 10 is located in the first zone Z1 and at least one position of the sensor 20 is located in the fourth zone Z4 (and no position is in the second zone Z2 and the third zone Z3).
- the computer 30 is also configured to indicate to the driver whether the camber angle Q is positive or negative. More specifically, the computer 30 is configured to alert on which wheel(s) 10 the camber angle Q is positive or negative, in particular via a light indication, for example on the dashboard, visible to the driver.
- the computer 30 is also configured to determine the value of the camber angle Q of a wheel 10 of the vehicle 1 as illustrated in FIG. 12.
- the computer 30 is configured to model, in the plane defined by the pitch axis Y and the yaw axis Z, a segment representing an estimate of the variation of the yaw coordinate of the sensor 20 in function of the pitch coordinate of the sensor 20.
- the computer 30 is configured to represent the position of the sensor 20 in the plane defined by the pitch axis Y and the yaw axis Z, each position being defined by a pitch coordinate and a yaw coordinate determined by the computer 30.
- the computer 30 can use a linear regression model.
- the segment thus modeled represents the projection of the plane of wheel 10 in the plane comprising the pitch axis Y and the yaw axis Z.
- the computer 30 has knowledge of the length of the modeled segment, which corresponds to the diameter D of the wheel 10. Furthermore, since the computer 30 has modeled the segment, said computer 30 knows the value of the minimum pitch coordinate Pmin and of the maximum pitch coordinate Pmax on said modeled segment.
- the computer 30 is configured to determine the value of the camber angle Q, in particular from the following equality:
- the computer 30 is also configured to give the driver the value of the camber angle Q. More specifically, the computer 30 is configured to give, for each wheel 10 having a camber anomaly, the value of the angle camber Q, via a light indication, for example displayed on the dashboard, visible to the driver.
- the computer 30 is configured to detect that the geometry anomaly detected on a wheel 10 of the vehicle 1 is a parallelism anomaly, from at least two positions of the sensor 20 mounted in said wheel 10 in rotation, each position being defined in the plane comprising the pitch axis Y and the roll axis X by a pitch coordinate and a roll coordinate determined by the computer 30.
- Parallelism denotes, in top view of the vehicle 1, the angle w between the projection of the plane of the wheel 10 in the plane defined by the pitch axis Y and the roll axis X, provided that this projection is a line, and the roll axis X.
- the parallelism anomaly is detected as a function of the first predetermined range P1 and of a third predetermined range P3.
- the third predetermined range P3 designates a set of coordinate values on a roll axis X, centered on the center of the wheel 10, between a minimum and a maximum, when the wheel 10 has been correctly mounted in the vehicle 1.
- the third predetermined range P3 comprises all the roll coordinate values between a minimum value and a maximum value centered on the center of the wheel 10 .
- the third range P3 is notably defined according to the sensitivity of the sensor 20 mounted in said wheel 10. In addition, the third range P3 is notably determined by the manufacturer.
- the third range P3 is determined during the first use of the vehicle 1.
- the third range P3 is determined according to said determined reference position of each wheel 10.
- the third predetermined range P3 designates a set of roll coordinate values comprised between ⁇ 2.5 mm and +2.5 mm.
- a fifth zone Z5 defines the zone for which the coordinate of pitch is less than the minimum value of the first predetermined range P1 and the roll coordinate is greater than the maximum value of the third predetermined range P3, b) a sixth zone Z6 defines the zone for which the pitch coordinate is greater than the maximum value of the first predetermined range P1 and the roll coordinate is greater than the maximum value of the third predetermined range P3, c) a seventh zone Z7 defines the zone for which the pitch coordinate is lower than the minimum value of the first predetermined range P1 and the roll coordinate is less than the minimum value of the third predetermined range P3, d) an eighth zone Z8 defines the zone for which the c pitch coordinate is greater than the maximum value of the first predetermined range P1 and the roll coordinate is less than the minimum value of the third predetermined range P3.
- the wheel 10 has a parallelism anomaly when, in top view of the vehicle 1, the projection of the plane of the wheel 10 in the plane defined by the pitch axis Y and the roll axis X, provided that this projection is a straight line, forms an angle w with the roll axis X.
- the computer 30 is configured to detect an anomaly of parallelism of a wheel 10 if: a) at least one position of the sensor 20 mounted in the wheel 10 is located in the fifth zone Z5 and at least one position of the sensor 20 is located in the eighth zone Z8, and no position is in the sixth zone Z6 and the seventh zone Z7, or b) at least one position of the sensor 20 mounted in the wheel 10 is located in the sixth zone Z6 and at least one position of the sensor 20 is located in the seventh zone Z7, and no position is in the fifth zone Z5 and the eighth zone Z8.
- the computer 30 is also configured to alert the driver of the detection of a parallelism anomaly. More precisely, the computer 30 is configured to alert on which wheel(s) 10 a parallelism anomaly has been detected.
- the computer 30 alerts the driver via the transmission of an alert message, for example an audible signal in the passenger compartment of the vehicle 1 or the display of a light signal, for example on the dashboard. dashboard, visible to the driver.
- an alert message for example an audible signal in the passenger compartment of the vehicle 1 or the display of a light signal, for example on the dashboard. dashboard, visible to the driver.
- the computer is also configured to determine whether the parallelism angle w of the detected parallelism anomaly is positive or negative.
- the angle of parallelism w of a wheel 10 of the vehicle 1 denotes the angle between the projection of the plane of the wheel 10, in the plane defined by the pitch axis Y and the roll axis X, and the roll axis X, as shown in Figure 14.
- the angle of parallelism w is positive if the front of the wheel 10 is oriented towards the outside of the vehicle 1 (as illustrated in FIG. 2), and the angle of parallelism w is negative if the front of the wheel 10, is oriented towards the interior of the vehicle 1 (as illustrated in FIG. 1).
- the computer 30 is configured to determine that the angle of parallelism w is positive if at least one position of the sensor 20 mounted in the wheel 10 is located in the fifth zone Z5 and at least one position of the sensor 20 is located in the eighth zone Z8 (and no position is in the sixth zone Z6 and the seventh zone Z7).
- the computer 30 is configured to determine that the angle of parallelism w is negative if at least one position of the sensor 20 mounted in the wheel 10 is located in the sixth zone Z6 and at least one position of the sensor 20 is located in the seventh zone Z7 (and no position is in the fifth zone Z5 and the eighth zone Z8).
- the computer 30 is configured to determine that the angle of parallelism w is positive if at least one position of the sensor 20 mounted in the wheel 10 is located in the sixth zone Z6 and at least one position of the sensor 20 is located in the seventh zone Z7 (and no position is in the fifth zone Z5 and the eighth zone Z8).
- the computer 30 is configured to determine that the angle of parallelism w is negative if at least one position of the sensor 20 mounted in the wheel 10 is located in the fifth zone Z5 and at least one position of the sensor 20 is located in the eighth zone Z8 (and no position is in the sixth zone Z6 and the seventh zone Z7).
- the computer 30 is also configured to indicate to the driver whether the angle of parallelism w is positive or negative. More precisely, the calculator 30 is configured to alert on which wheel(s) 10 the parallelism angle w is positive or negative, in particular via a light indication, for example on the dashboard, visible to the driver.
- the computer 30 is also configured to determine the value of the angle of parallelism w of a wheel 10 of the vehicle 1, as illustrated in FIG. 14.
- the computer 30 is configured to model, in the plane defined by the pitch axis Y and the roll axis X, a segment representing an estimate of the variation of the roll coordinate of the sensor 20 in function of the pitch coordinate of the sensor 20, from the pitch coordinates and the roll coordinates determined by the computer 30.
- the computer 30 is configured to represent the position of the sensor 20 in the plane defined by the pitch axis Y and the roll axis X, each position being defined by a pitch coordinate and a roll coordinate. roll determined by the computer 30.
- the computer 30 can use a linear regression model.
- the segment thus modeled represents the projection of the plane of wheel 10 in the plane comprising the pitch axis Y and the roll axis X.
- the computer 30 has knowledge of the length of the modeled segment, which corresponds to the diameter D of the wheel 10.
- said computer 30 since the computer 30 has modeled the segment, said computer 30 knows the value of the minimum pitch coordinate Pmin and of the maximum pitch coordinate Pmax on said modeled segment.
- the computer 30 is configured to determine the value of the angle of parallelism w, in particular from the following equality:
- the computer 30 is also configured to give the driver the value of the angle of parallelism w. More precisely, the computer 30 is configured to give, for each wheel 10 presenting an anomaly of parallelism, the value of the angle of parallelism w, via a luminous indication, for example displayed on the dashboard, visible by the driver.
- the method comprises a step E0 of measuring at least one pitch parameter value, at least one yaw parameter value and at least one roll parameter value of the wheel 10 in rotation.
- the sensor 20 mounted in the wheel 10 measures the at least one pitch parameter value, yaw parameter value and roll parameter value.
- the senor 20 measures the at least one pitch parameter value and the roll parameter value and the second sensor measures the at least one yaw parameter value.
- each pitch parameter value, yaw parameter value or roll parameter value is associated with an identifier, allowing the computer 30 to identify from which sensor 20, or second sensor, said value of setting.
- the method then comprises a step E1 of sending the at least one pitch parameter value, the at least one yaw parameter value and the at least one roll parameter value measured to the computer 30 .
- the senor 20 sends the at least one pitch parameter value, the at least one yaw parameter value and the at least one roll parameter value measured to the calculator 30.
- the senor 20 sends the at least one pitch parameter value and the at least one roll parameter value measured to the computer 30, and the second sensor sends the at least one yaw parameter value to computer 30.
- the method then comprises a step E2 of reception by the computer 30 of the at least one pitch parameter value, of the at least one yaw parameter value and of the at least one yaw parameter value. roll.
- the method then comprises a step of identifying the origin of each parameter value received, during which the computer 30 identifies which sensor 20, or second sensor, sent the value of the pitch parameter, of the yaw or roll parameter received.
- the computer 30 uses the identifier associated with the value of the pitch, yaw or roll parameter received.
- the computer 30 is configured to identify from which wheel 10 of the vehicle 1 comes the value of the pitch parameter, of the yaw parameter or of the roll parameter received.
- the method comprises a step of determining the pitch, yaw and roll coordinates E3 from the pitch, yaw and roll parameter values received.
- the computer 30 determines the pitch coordinate of the sensor 20 with respect to the predetermined reference R0 at from the received pitch parameter value.
- the computer 30 determines the yaw coordinate of the sensor 20, with respect to the predetermined reference RO from the yaw parameter value sent by the sensor 20 or by the second sensor.
- the computer 30 determines the roll coordinate of the sensor 20 with respect to the predetermined reference R0 from the roll parameter value sent by sensor 20.
- the method then comprises a step of detecting a geometry anomaly E4 on the wheel 10 of the vehicle 1 comprising the sensor 20, if at least one determined pitch coordinate of the sensor 20 mounted in said wheel 10, is outside the first predetermined range P1.
- the method may comprise an alert step E41 of a geometry anomaly, in which the driver receives an alert message, transmitted by the computer 30 , signifying the presence of a geometry anomaly on the wheel 10 of the vehicle 1 concerned.
- Said alert message can be a sound signal for example, given via a speaker of the vehicle 1, or a light signal, displayed on the dashboard of the vehicle 1 and visible to the driver.
- the method comprises a step of detecting a tightening anomaly E5 of said wheel 10 from at least two positions of the sensor 20, each position being defined in the plane comprising the pitch axis Y and the yaw axis Z by a determined pitch coordinate and yaw coordinate.
- a tightening anomaly is detected by the computer 30 if: a) at least one position of the sensor 20 mounted in the wheel 10 is located in the first zone Z1 and at least one position of sensor 20 is located in second zone Z2, or b) at least one position of the sensor 20 mounted in the wheel 10 is located in the third zone Z3 and at least one position of the sensor 20 is located in the fourth zone Z4, or c) at least one position of the sensor mounted in the wheel 10 is located in the first zone Z1 and at least one position of the 20 is located in the third zone Z3, or d) at least one position of the sensor 20 mounted in the wheel 10 is located in the second zone Z2 and at least one position of the sensor 20 is located in the fourth zone Z4.
- the method may include an alert step E51, in which the driver receives an alert message, sent by the computer 30, notifying him of the presence of a tightening anomaly on the wheel 10 of the vehicle 1 concerned.
- Said alert message can be a sound signal for example, given via a speaker of the vehicle 1, or a light signal, displayed on the dashboard of the vehicle 1 and visible to the driver.
- the method may comprise a step of detecting a camber anomaly E6 of said wheel 10 from at least two positions of the sensor 20, each position being defined in the plane comprising the pitch axis Y and the yaw axis Z by a determined pitch coordinate and by a determined yaw coordinate.
- the computer 30 detects a camber anomaly of the wheel 10 if: a) at least one position of the sensor 20 mounted in the wheel 10 is located in the first zone Z1 and at least one position of the sensor 20 is located in the fourth zone Z4, and no position is in the second zone Z2 and the third zone Z3, or b) at least one position of the sensor 20 mounted in the wheel 10 is located in the second zone Z2 and at least one position of the sensor 20 is located in the third zone Z3, and no position is in the first zone Z1 and the fourth zone Z4.
- the method may comprise an alert step E61, in which the driver receives an alert message, sent by the computer 30, notifying him of the presence of a camber anomaly on the wheel 10 of the vehicle 1 concerned.
- Said alert message can be a sound signal for example, given via a speaker of the vehicle 1, or a light signal, displayed on the dashboard of the vehicle 1 and visible to the driver.
- the method comprises a step for determining the type of camber angle E62, in other words, during this step, the computer 30 determines whether the camber angle Q is positive or negative.
- the computer 30 determines that the camber angle Q is positive if at least one position of the sensor 20 mounted in the wheel 10 is located in the first zone Z1 and at least one position of the 20 is located in the fourth zone Z4 (and no position is in the second zone Z2 and the third zone Z3).
- the computer 30 determines that the camber angle Q is negative if at least one position of the sensor 20 mounted in the wheel 10 is located in the second zone Z2 and at least a position of the sensor 20 is located in the third zone Z3 (and no position is in the first zone Z1 and the fourth zone Z4).
- the computer 30 determines that the camber angle Q is positive if at least one position of the sensor 20 mounted in the wheel 10 is located in the second zone Z2 and at least one position of the sensor 20 is located in the third zone Z3 (and no position is in the first zone Z1 and the fourth zone Z4). Still concerning the right side wheels 10 of the vehicle 1, the computer 30 determines that the camber angle Q is negative if at least one position of the sensor 20 mounted in the wheel 10 is located in the first zone Z1 and at least a position of the sensor 20 is located in the fourth zone Z4 (and no position is in the second zone Z2 and the third zone Z3).
- the method comprises a step of indicating to the driver the type of camber angle Q. More precisely, the computer 30 indicates on which wheel(s) 10 the camber angle Q is positive or negative, in particular via a luminous indication, for example on the dashboard, visible to the driver.
- the method comprises a step of determining the value of the camber angle E63.
- the computer 30 models, in the plane defined by the pitch axis Y and the yaw axis Z, a segment representing an estimate of the variation of the yaw coordinate of the sensor 20 as a function of of the pitch coordinate of the sensor 20, from the pitch coordinates and the yaw coordinates determined by the computer 30.
- the computer 30 models the projection of the plane of the wheel 10 in the plane defined by the axis of Y pitch and Z yaw axis.
- the computer 30 is configured to determine the value of the camber angle Q , in particular from the following equality:
- the method comprises a step of indicating to the driver the value of the camber angle camber Q. More precisely, the computer 30 indicates the camber angle value Q for each wheel 10 exhibiting a camber anomaly.
- the method may comprise a step of detecting an anomaly of parallelism E7 of said wheel 10 from at least two positions of the sensor 20, each position being defined in the plane comprising the pitch axis Y and the roll axis X by a determined pitch coordinate and roll coordinate.
- the computer 30 detects an anomaly of parallelism of the wheel 10 if: a) at least one position of the sensor 20 mounted in the wheel 10 is located in the fifth zone Z5 and at least one coordinate of the sensor 20 is located in the eighth zone Z8, and no position is in the sixth zone Z6 and the seventh zone Z7, or b) at least one position of the sensor 20 mounted in the wheel 10 is located in the sixth zone Z6 and at least one coordinate of the sensor 20 is located in the seventh zone Z7, and no position is in the fifth zone Z5 and the eighth zone Z8.
- the method may include an alert step E71, in which the driver receives an alert message, sent by the computer 30, notifying him of the presence of a parallelism anomaly on the wheel 10 of the vehicle 1 concerned.
- the alert message can be an audible signal for example, given via a speaker of the vehicle 1 , or a light signal, displayed on the dashboard of the vehicle 1 and visible to the driver.
- the method comprises a step of determining the type of parallelism angle E72, in other words, during this step, the computer 30 determines whether the angle of parallelism w is positive or negative. In particular, during this step, concerning the left side wheels 10 of the vehicle 1, the computer 30 determines that the angle of parallelism w is positive if at least one position of the sensor 20 mounted in the wheel 10 is located in the fifth zone Z5 and at least one position of the sensor 20 is located in the eighth zone Z8 (and no position is in the sixth zone Z6 and the seventh zone Z7).
- the computer 30 determines that the angle of parallelism w is negative if at least one position of the sensor 20 mounted in the wheel 10 is located in the sixth zone Z6 and at least a position of the sensor 20 is located in the seventh zone Z7 (and no position is in the fifth zone Z5 and the eighth zone Z8).
- the computer 30 determines that the angle of parallelism w is positive if at least one position of the sensor 20 mounted in the wheel 10 is located in the sixth zone Z6 and at least one position of the sensor 20 is located in the seventh zone Z7 (and no position is in the fifth zone Z5 and the eighth zone Z8).
- the computer 30 determines that the angle of parallelism w is negative if at least one position of the sensor 20 mounted in the wheel 10 is located in the fifth zone Z5 and at least a position of the sensor 20 is located in the eighth zone Z8 (and no position is in the sixth zone Z6 and the seventh zone Z7).
- the method comprises a step of indicating to the driver the type of parallelism angle w. More precisely, the computer 30 indicates on which wheel(s) 10 the parallelism angle w is positive or negative, in particular via a light indication, for example on the dashboard, visible to the driver.
- the method comprises a step of determining the value of the parallelism angle E73.
- the computer 30 models, in the plane defined by the pitch axis Y and the roll axis X, a segment representing an estimate of the variation of the roll coordinate of the sensor 20 as a function of of the pitch coordinate of the sensor 20, from the pitch coordinates and the roll coordinates determined by the computer 30.
- the computer 30 models the projection of the plane of the wheel 10 in the plane defined by the axis of pitch Y and roll axis X.
- the computer 30 is configured to determine the value of the angle of parallelism w , in particular from the following equality:
- the method comprises a step of indicating to the driver the value of the parallelism angle w. More precisely, the computer 30 gives the value of the angle of parallelism w for each wheel 10 exhibiting a parallelism anomaly.
- the vehicle 1 comprises a plurality of second sensors and/or a plurality of wheels 10 comprises a sensor 20, then the method is repeated for each sensor 20 or for each assembly, comprising a sensor 20 and a second sensor, associated with a wheel 10.
- the computer 30, the sensor 20, or the sensor 20 and the second sensor, and the method as described above make it possible to detect a geometry anomaly on at least one wheel 10 of the vehicle 1, and in particular to define the type of geometry anomaly: tightness, camber and/or parallelism.
- the computer 30 and the method according to the invention make it possible to warn the driver in the event of a detected geometry anomaly.
- the driver and/or the owner of the vehicle 1 can know when an intervention by a professional is necessary to remedy the at least one geometry anomaly detected.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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CN202280020221.8A CN116964411A (zh) | 2021-03-09 | 2022-03-07 | 车辆车轮几何形状异常的检测 |
US18/280,785 US12066286B2 (en) | 2021-03-09 | 2022-03-07 | Detection of a geometric anomaly of a vehicle wheel |
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FRFR2102293 | 2021-03-09 | ||
FR2102293A FR3120687B1 (fr) | 2021-03-09 | 2021-03-09 | Détection d’une anomalie de géométrie d’une roue de véhicule |
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WO2022189337A1 true WO2022189337A1 (fr) | 2022-09-15 |
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PCT/EP2022/055709 WO2022189337A1 (fr) | 2021-03-09 | 2022-03-07 | Détection d'une anomalie de géométrie d'une roue de véhicule |
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US (1) | US12066286B2 (fr) |
CN (1) | CN116964411A (fr) |
FR (1) | FR3120687B1 (fr) |
WO (1) | WO2022189337A1 (fr) |
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-
2021
- 2021-03-09 FR FR2102293A patent/FR3120687B1/fr active Active
-
2022
- 2022-03-07 CN CN202280020221.8A patent/CN116964411A/zh active Pending
- 2022-03-07 WO PCT/EP2022/055709 patent/WO2022189337A1/fr active Application Filing
- 2022-03-07 US US18/280,785 patent/US12066286B2/en active Active
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Also Published As
Publication number | Publication date |
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FR3120687A1 (fr) | 2022-09-16 |
US12066286B2 (en) | 2024-08-20 |
CN116964411A (zh) | 2023-10-27 |
US20240085176A1 (en) | 2024-03-14 |
FR3120687B1 (fr) | 2023-01-27 |
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