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WO2018006549A1 - Procédé et dispositif de détection d'état de pneu - Google Patents

Procédé et dispositif de détection d'état de pneu Download PDF

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Publication number
WO2018006549A1
WO2018006549A1 PCT/CN2016/110062 CN2016110062W WO2018006549A1 WO 2018006549 A1 WO2018006549 A1 WO 2018006549A1 CN 2016110062 W CN2016110062 W CN 2016110062W WO 2018006549 A1 WO2018006549 A1 WO 2018006549A1
Authority
WO
WIPO (PCT)
Prior art keywords
tire
radar
vehicle
distance
state
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.)
Ceased
Application number
PCT/CN2016/110062
Other languages
English (en)
Chinese (zh)
Inventor
刘均
刘新
宋朝忠
欧阳张鹏
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.)
Shenzhen Launch Technology Co Ltd
Original Assignee
Shenzhen Launch Technology Co Ltd
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 Shenzhen Launch Technology Co Ltd filed Critical Shenzhen Launch Technology Co Ltd
Publication of WO2018006549A1 publication Critical patent/WO2018006549A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B60C23/06—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/02—Tyres

Definitions

  • the present invention relates to the field of vehicle detection technology, and in particular, to a tire condition detecting method and apparatus.
  • a primary object of the present invention is to provide a tire condition detecting method and apparatus, which aim to solve the technical problem of more comprehensively detecting various states of a tire in a running state of the vehicle.
  • the present invention provides a tire condition detecting method, and the tire condition detecting method includes:
  • the tilt angle is analyzed according to a preset relationship between the tilt angle and the tire state, and the current tire state is determined, the tire state including at least one or more of tire wear, tire positioning, and tire air pressure.
  • transmitting a plurality of radar waves to the tire in a rotating state comprises:
  • the current tire speed is measured according to the current vehicle traveling speed and the tire size for adjusting the interval time of transmitting the radar wave, and according to the interval time, the radar wave is emitted to the tire in the rotating state.
  • the calculating the tilt angle of the tire or the vehicle according to the distance comprises:
  • the corresponding tilt angle is calculated according to the distance difference and the emission angle of the radar wave.
  • the radar waves are transmitted in a symmetrical manner.
  • the present invention also provides a tire condition detecting device, the tire state detecting device comprising:
  • a detecting module configured to, when the vehicle is in a running state, emit a plurality of radar waves to the tire in a rotating state, and receive a corresponding reflected radar wave;
  • a calculation module configured to calculate a distance between a radar emission point and a radar reflection point on the tire according to the information about the radar wave emitted and reflected, and calculate a tilt angle of the tire or the vehicle according to the distance;
  • the state determining module is configured to analyze the tilt angle according to a preset relationship between the tilt angle and the tire state to determine a current tire state.
  • the detecting module is further configured to:
  • the current tire speed is measured according to the current vehicle traveling speed and the tire size for adjusting the interval time of transmitting the radar wave, and according to the interval time, the radar wave is emitted to the tire in the rotating state.
  • the calculation module is further configured to:
  • the corresponding tilt angle is calculated according to the distance difference and the emission angle of the radar wave.
  • the radar waves are transmitted in a symmetrical manner.
  • the invention adopts the method of transmitting radar waves, calculates the inclination angle of the tire or the vehicle according to the distance between the radar emission point and the radar reflection point on the tire, and then passes the analysis relationship according to the corresponding relationship between the preset inclination angle and the tire state.
  • the angle of inclination is determined to determine the current tire condition.
  • the invention can realize the tire state judgment in the running of the automobile, thereby providing the vehicle owner with a safe driving environment.
  • FIG. 1 is a schematic flow chart of an embodiment of a tire condition detecting method according to the present invention.
  • FIG. 2 is a schematic diagram of the refinement process of step S20 in Figure 1;
  • FIG. 3 is a schematic diagram of functional modules of an embodiment of a tire condition detecting apparatus of the present invention.
  • the tire condition detecting method includes:
  • Step S10 when the vehicle is in a running state, transmitting a plurality of radar waves to the tire in a rotating state, and receiving a corresponding reflected radar wave;
  • each wheel or each group of wheels corresponds to a radar transceiver; for example, the radar transceiver is mounted on the vehicle chassis.
  • a change in the state of the tire will result in a change in the shape of the tire and even a tilting of the vehicle as a whole.
  • tire wear will result in a decrease in the thickness of the tire, that is, a decrease in the ground clearance; for example, insufficient tire pressure will cause the tire to exhibit a flat change, that is, the tire and the ground contact portion become more curved.
  • the determination of the state of the tire of the vehicle is indirectly realized by the method of transmitting the radar wave based on various characteristics caused by the above-described change in the state of the tire.
  • electromagnetic waves having a higher transmission power and a more linear deviation of the propagation path are preferred in this embodiment.
  • the multiple times of transmitting the radar wave can detect different positions on the tire, and then synthesize the received reflected radar waves and calculate the corresponding radar emission. Point to the distance between the radar reflection points on the tire, or adjust the launch angle of the radar wave to calculate the distance between the corresponding radar launch point and the radar reflection point on the tire.
  • Step S20 calculating a distance between a radar emission point and a radar reflection point on the tire according to the information about the radar wave transmitted and reflected, and calculating a tilt angle of the tire or the vehicle according to the distance;
  • the tilt angle of the tire or the vehicle can be calculated according to the calculated distance between the radar launch point and the radar reflection point on the tire, and the specific calculation manner is not limited. Among them, there are many reasons for the tire to be tilted, such as unevenness of the road surface, improper positioning of the tire, etc. If the radar transceiver transmits radar waves to the side of the tire in a manner parallel to the ground plane, if the tire is not tilted, the tire is on the tire. The distance between each radar reflection point and the radar emission point should be theoretically the same, and if not the same, it is determined that the tire has tilted. Similarly, when the tire wears out or the tire pressure is insufficient, the vehicle will be tilted. Specifically, the corresponding tilt angle can be calculated from the distance between the radar launch point and the radar reflection point on the tire.
  • the distance L in different time periods may be further compared, and if the distance change ⁇ L in different time periods exceeds a certain preset value, it is determined that the tire state changes.
  • Step S30 analyzing the tilt angle according to a preset relationship between the tilt angle and the tire state to determine a current tire state, the tire state including at least one of tire wear, tire positioning, and tire air pressure.
  • the tilt angle described in this embodiment includes not only the angle value but also the tilt direction.
  • the front left tire is tilted
  • the front right tire and the rear right tire are tilted in the direction of the front left tire to determine that the front left tire has insufficient tire pressure.
  • the radar wave is transmitted in a symmetrical manner to Improve the accuracy of the analysis results. For example, firing a symmetrical tire, or simultaneously transmitting a radar wave to a symmetrical position of the same tire.
  • the method of transmitting a radar wave is used to calculate the inclination angle of the tire or the vehicle according to the distance between the radar emission point and the radar reflection point on the tire, and then according to the corresponding relationship between the preset inclination angle and the tire state.
  • the current tire condition is determined by analyzing the tilt angle.
  • the step S10 further includes:
  • the current tire speed is measured according to the current vehicle traveling speed and the tire size for adjusting the interval time of transmitting the radar wave, and according to the interval time, the radar wave is emitted to the tire in the rotating state.
  • the radar reflection point In order to ensure the effectiveness of radar wave transmission, for example, the radar reflection point needs to be located in a plurality of different regions of the tire, therefore, it is necessary to determine the transmission interval of the radar wave.
  • the current tire speed is measured according to the current vehicle traveling speed and the tire size, and the interval time of transmitting the radar wave is adjusted according to the current tire speed, thereby ensuring that the radar reflection points on the tire do not overlap. It also covers the entire tire area.
  • FIG. 2 is a schematic diagram showing the refinement process of step S20 in FIG. Based on the foregoing embodiments of the foregoing method, in the embodiment, the foregoing step S20 includes:
  • Step S201 calculating a distance difference between radar reflection points according to the distance corresponding to the plurality of radar reflection points
  • Step S202 when the distance difference exceeds a preset difference, determining that the tire or the vehicle is tilted;
  • Step S203 calculating a corresponding tilt angle according to the distance and the emission angle of the radar wave.
  • the shape change on the tire can be indirectly measured by the distance difference between the radar reflection points.
  • a preset difference may be correspondingly set, and if the distance difference exceeds the preset difference, it is determined that the tire or the vehicle is tilted. If it is determined that the tire or the vehicle is tilted, the tilt angle of the tire or the vehicle can be calculated according to the radar distance and the launch angle of the radar wave, and the specific calculation process is not described too much.
  • the deformation of the vehicle tire is affected by the weight of the vehicle, that is, the deformation is concentrated on the ground contact portion. Therefore, in order to avoid misjudgment, the data of the four tires can be integrated for comprehensive comparison determination.
  • the radiation angle of the radar transceiver device it is possible to keep the radiation angle of the radar transceiver device unchanged, thereby detecting a special state on the tire, which does not change position with the rotation of the tire, such as a tire bulge, a crack, or the like.
  • FIG. 3 is a schematic diagram of functional modules of an embodiment of a tire condition detecting apparatus according to the present invention.
  • the tire condition detecting device includes:
  • the detecting module 10 is configured to, when the vehicle is in a running state, emit a plurality of radar waves to the tire in a rotating state, and receive a corresponding reflected radar wave;
  • each wheel or each group of wheels corresponds to a radar transceiver; for example, the radar transceiver is mounted on the vehicle chassis.
  • a change in the state of the tire will result in a change in the shape of the tire and even a tilting of the vehicle as a whole.
  • tire wear will result in a decrease in the thickness of the tire, that is, a decrease in the ground clearance; for example, insufficient tire pressure will cause the tire to exhibit a flat change, that is, the tire and the ground contact portion become more curved.
  • the determination of the state of the tire of the vehicle is indirectly realized by the method of transmitting the radar wave based on various characteristics caused by the above-described change in the state of the tire.
  • electromagnetic waves having a higher transmission power and a more linear deviation of the propagation path are preferred in this embodiment.
  • the multiple times of transmitting the radar wave can detect different positions on the tire, and then synthesize the received reflected radar waves and calculate the corresponding radar emission. Point to the distance between the radar reflection points on the tire, or adjust the launch angle of the radar wave to calculate the distance between the corresponding radar launch point and the radar reflection point on the tire.
  • the calculating module 20 is configured to calculate a distance between a radar transmitting point and a radar reflection point on the tire according to the information about the radar wave transmitted and reflected, and calculate a tilt angle of the tire or the vehicle according to the distance;
  • the tilt angle of the tire or the vehicle can be calculated according to the calculated distance between the radar launch point and the radar reflection point on the tire, and the specific calculation manner is not limited. Among them, there are many reasons for the tire to be tilted, such as unevenness of the road surface, improper positioning of the tire, etc. If the radar transceiver transmits radar waves to the side of the tire in a manner parallel to the ground plane, if the tire is not tilted, the tire is on the tire. The distance between each radar reflection point and the radar emission point should be theoretically the same, and if not the same, it is determined that the tire has tilted. Similarly, when the tire wears out or the tire pressure is insufficient, the vehicle will be tilted. Specifically, the corresponding tilt angle can be calculated from the distance between the radar launch point and the radar reflection point on the tire.
  • the distance L in different time periods may be further compared, and if the distance change ⁇ L in different time periods exceeds a certain preset value, it is determined that the tire state changes.
  • the state determining module 30 is configured to analyze the tilt angle according to a preset relationship between the tilt angle and the tire state to determine a current tire state.
  • the tilt angle described in this embodiment includes not only the angle value but also the tilt direction.
  • the front left tire is tilted
  • the front right tire and the rear right tire are tilted in the direction of the front left tire to determine that the front left tire has insufficient tire pressure.
  • the radar wave is transmitted in a symmetrical manner to Improve the accuracy of the analysis results. For example, firing a symmetrical tire, or simultaneously transmitting a radar wave to a symmetrical position of the same tire.
  • the method of transmitting a radar wave is used to calculate the inclination angle of the tire or the vehicle according to the distance between the radar emission point and the radar reflection point on the tire, and then according to the corresponding relationship between the preset inclination angle and the tire state.
  • the current tire condition is determined by analyzing the tilt angle.
  • the detecting module 10 is further configured to: when the vehicle is in a running state, measure the current tire speed according to the current vehicle traveling speed and the tire size for adjusting the transmitting radar. The interval of the waves, and according to the interval time, the radar waves are emitted to the tires in a rotating state.
  • the radar reflection point In order to ensure the effectiveness of radar wave transmission, for example, the radar reflection point needs to be located in a plurality of different regions of the tire, therefore, it is necessary to determine the transmission interval of the radar wave.
  • the current tire speed is measured according to the current vehicle traveling speed and the tire size, and the interval time of transmitting the radar wave is adjusted according to the current tire speed, thereby ensuring that the radar reflection points on the tire do not overlap. It also covers the entire tire area.
  • the calculating module 20 is further configured to:
  • the corresponding tilt angle is calculated according to the distance and the emission angle of the radar wave.
  • the shape change on the tire can be indirectly measured by the distance difference between the radar reflection points.
  • a preset difference may be correspondingly set, and if the distance difference exceeds the preset difference, it is determined that the tire or the vehicle is tilted. If it is determined that the tire or the vehicle is tilted, the tilt angle of the tire or the vehicle can be calculated according to the radar distance and the launch angle of the radar wave, and the specific calculation process is not described too much.
  • the deformation of the vehicle tire is affected by the weight of the vehicle, that is, the deformation is concentrated on the ground contact portion. Therefore, in order to avoid misjudgment, the data of the four tires can be integrated for comprehensive comparison determination.
  • the radiation angle of the radar transceiver device it is possible to keep the radiation angle of the radar transceiver device unchanged, thereby detecting a special state on the tire, which does not change position with the rotation of the tire, such as a tire bulge, a crack, or the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

L'invention concerne un procédé de détection d'état de pneu et un dispositif de détection correspondant. Le procédé comprend : lorsqu'un véhicule est dans un état de conduite, la transmission d'une pluralité d'ondes radar à un pneu dans un état de rotation et la réception d'ondes radar réfléchies correspondantes ; le calcul, en fonction des informations des ondes radar transmises et des ondes radar réfléchies, d'une distance entre un point de transmission de radar et un point de réflexion de radar correspondant sur le pneu et le calcul d'un angle d'inclinaison du pneu ou du véhicule en fonction de la distance ; et l'analyse, en fonction d'une correspondance prédéfinie entre l'angle d'inclinaison et un état du pneu, de l'angle d'inclinaison et la détermination d'un état actuel du pneu, l'état du pneu comprenant l'abrasion du pneu et/ou le positionnement du pneu et/ou la pression du pneu. Selon le procédé et le dispositif de détection d'état de pneu, un état de pneu peut être déterminé pendant la conduite d'un véhicule, de telle sorte qu'un environnement de conduite sûr est fourni pour un propriétaire du véhicule.
PCT/CN2016/110062 2016-07-08 2016-12-15 Procédé et dispositif de détection d'état de pneu Ceased WO2018006549A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610544008.3 2016-07-08
CN201610544008.3A CN106183662B (zh) 2016-07-08 2016-07-08 轮胎状态检测方法及装置

Publications (1)

Publication Number Publication Date
WO2018006549A1 true WO2018006549A1 (fr) 2018-01-11

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WO (1) WO2018006549A1 (fr)

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CN106183662B (zh) * 2016-07-08 2018-10-30 深圳市元征科技股份有限公司 轮胎状态检测方法及装置
CN109141937B (zh) * 2018-08-03 2021-04-09 北京逸驰科技有限公司 一种智能化轮胎评估系统及其使用方法
CN109532349B (zh) * 2018-11-19 2020-08-18 合肥市极点科技有限公司 一种机动车轮胎气压在线检测装置
CN109334356A (zh) * 2018-12-05 2019-02-15 睿驰达新能源汽车科技（北京）有限公司 一种胎压检测方法、装置和车辆
JP7332861B2 (ja) * 2019-06-03 2023-08-24 横浜ゴム株式会社 タイヤ故障予知システム、タイヤ故障予知方法
AU2020314718B2 (en) * 2019-07-15 2023-09-14 Firestone Industrial Products Company, Llc Vehicle tire assembly including an internal inflation height and contact patch sensor using millimeter wavelength radar
US11607915B2 (en) 2019-12-23 2023-03-21 Continental Automotive Systems, Inc. Method and device for measuring tread depth of a tire
CN114435029A (zh) * 2022-02-28 2022-05-06 阿维塔科技(重庆)有限公司 车辆行驶的调整方法及调整系统

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CN103935197A (zh) * 2014-05-09 2014-07-23 宁波金洋化工物流有限公司 一种实时准确地进行胎压监测的胎压监测系统
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CN106183662A (zh) 2016-12-07
CN106183662B (zh) 2018-10-30

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