CN101196438B - 轮胎的水膜现象测量装置 - Google Patents

轮胎的水膜现象测量装置 Download PDF

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CN101196438B
CN101196438B CN2007101987059A CN200710198705A CN101196438B CN 101196438 B CN101196438 B CN 101196438B CN 2007101987059 A CN2007101987059 A CN 2007101987059A CN 200710198705 A CN200710198705 A CN 200710198705A CN 101196438 B CN101196438 B CN 101196438B
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tire
hydroplaning
laser
laser beam
measuring apparatus
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CN101196438A (zh
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李元赫
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Hankook Tire and Technology Co Ltd
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Hankook Tire Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00Testing of vehicles
    • G01M17/007Wheeled or endless-tracked vehicles
    • G01M17/02Tyres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C25/00Apparatus or tools adapted for mounting, removing or inspecting tyres
    • B60C25/002Inspecting tyres
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical techniques
    • G01B11/16Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical techniques
    • G01B11/28Measuring arrangements characterised by the use of optical techniques for measuring areas
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00Pneumatic or solid tyres or parts thereof
    • B29L2030/002Treads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60YINDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2304/00Optimising design; Manufacturing; Testing
    • B60Y2304/09Testing or calibrating during manufacturing

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Tires In General (AREA)

Abstract

本发明提供一种轮胎水膜现象测量装置,轮胎与路面之间产生水膜层,车辆浮起一定高度时,其可以对路面与轮胎的高度位移进行定量测量。即,本发明提供这样的装置,使用激光器来对行驶于积水的透明塑料板上的轮胎照射激光束,并且使用CCD照相机对从该轮胎胎面反射的激光束进行拍摄,来测量轮胎的水膜现象。

Description

轮胎的水膜现象测量装置
技术领域
本发明关于对在雨天车辆行驶于路面时,积水路面与轮胎之间形成水膜的水膜现象进行测量的装置,更详细地,关于轮胎水膜现象测量装置,轮胎与路面之间形成水膜层,车辆浮起一定高度,其可定量地测量路面与轮胎之间的高度位移。
背景技术
将在雨天车辆行驶于积水路面时,轮胎胎面与路面之间充满水的现象称为水膜现象(Hydroplaning),该水膜现象是使轮胎失去与路面的摩擦力而在水膜上滑行的状态,通常,车辆会瞬间失去中心,一边滑行一边回转,此时,若司机紧急刹车或转动方向盘,则会造成较大的危险事故。
这样,在使用对该水膜现象进行实验的以往装置时,是以下述方式进行的,即轮胎通过透明的塑料板时,由外部传感器对此进行感知,当将一定量的水散布于该透明的塑料板后,使用高速照相机来对轮胎的胎面进行瞬间拍摄。
然而,以往的轮胎水膜现象测量装置,仅仅是判断轮胎胎面是否接地,因此存在无法实施更细致的测量的缺点。
发明内容
本发明是用于解决上述以往问题点的,其目的在于提供在雨天车辆行驶于积水路面的情况下,可对发生于路面与轮胎之间的水膜现象进行定量、精密测量的轮胎水膜现象测量装置。
为了达成上述目的,本发明可以通过由激光束照射测量体轮胎所得到的相位图(Phase map),从轮胎对水平位移进行直接拍摄。
也就是说,本发明的轮胎的水膜现象测量装置,是使用激光器来对行驶于积水的透明塑料板上的轮胎照射激光束,并且使用CCD照相机对从该轮胎胎面反射的激光束进行拍摄的构成,其特征在于,从上述激光器照射的激光束,经镜反射后,经过物镜并在针孔处过滤,借助平行透镜被平行照射,从行驶于透明塑料板上的轮胎胎面反射,该反射激光束被束分离器分离成两束,并且照到该束分离器的镜的一束激光束的轮胎形状,被CCD照相机拍摄并经帧接收器保存于控制部,另外一束激光束借助连接于上述束分离器的压电换能器并经过A/D转换器,由控制部处理将其作为测量资料。
附图说明
图1是本发明所涉及的轮胎水膜现象测量装置的整体构成图。
图2是用于对利用本发明的轮胎水膜现象测量装置拍摄轮胎形状的方式进行说明的图。
具体实施方式
下面,将结合例示附图对本发明进行更详细的说明。
图1是本发明所涉及的轮胎水膜现象测量装置的整体构成图。
本发明的轮胎水膜现象测量装置是以下述方式进行试验的,使用激光器4对整体行驶于积水1的透明塑料板2的轮胎3照射激光束5,并且使用CCD照相机6对从该轮胎3胎面反射的激光束5拍摄。
例如,由上述激光器4照射的激光束5,经镜7反射后,经过物镜8并在针孔9处过滤,借助平行透镜10平行照射,从行驶于透明塑料板2上的轮胎3的胎面反射,该反射的激光束5’被束分离器11分离成2束。该平行透镜10如图1所示,起到将照射到轮胎3的激光束5形成平行光的作用。
如上所述,在由束分离器11分离的2束光束中,照到镜12的1束激光束的轮胎形状,被CCD照相机6拍摄并借助帧接收器13保存于控制部14,另外1束激光束借助连接于上述束分离器11的压电换能器15经过A/D转换器16,由控制部14处理作为测量资料。这里,上述帧接收器13起到将由CCD照相机6拍摄的图象转换为数字信号并存储于控制部14的作用。
基于图2对使用本发明所涉及的轮胎水膜现象测量装置的方法进行如下说明。
初始的A区间是轮胎3在无水的透明塑料板2行驶的区间,B区间是在透明塑料板2散布适量的水1,轮胎3距离该透明塑料板2具有一定高度地行驶,即产生水膜现象的区间。
首先,使用CCD照相机6拍摄在A区间时的轮胎3,将水膜现象产生的B区间分成4个小区间即a、b、c、d区间来依次进行拍摄。为了拍摄轮胎3的同一表面,是以在上述B区间将实验测量装置的距离设定为仅仅相隔轮胎1个转动周期的状态进行拍摄。另外,将各个拍摄的资料存储于控制部14,可以对水膜现象进行精密地观测。
上述本发明所涉及的轮胎水膜现象测量装置,是对车辆在雨天行驶时路面与轮胎之间所产生的水膜现象进行观测的实验装备,其特征在于,可以通过激光束照射测量体(轮胎表面)所得到的相位图来对轮胎的水平位移进行直接测量。另外,由于在小空间的室内也可进行水膜实验,因此不管外部环境如何都可以进行全天候实验,此外,还具有可以准确进行测量的优点。

Claims (1)

1.一种轮胎的水膜现象测量装置,从激光器照射出的激光束被镜反射,并经过物镜且在针孔处被过滤,被过滤的激光束借助平行透镜平行照射于行驶于积水的透明塑料板上的轮胎的胎面,对从胎面反射的激光束进行拍摄处理来测量轮胎的水膜现象,其特征在于,
从上述胎面反射的激光束被光束分离器分离成两束,一束激光束以CCD照相机为媒体被拍摄后,借助帧接收器收存于控制部,另一束激光束借助压电换能器并经过A/D转换器被送至控制部,将其作为测量资料进行处理。
CN2007101987059A 2006-12-06 2007-12-06 轮胎的水膜现象测量装置 Expired - Fee Related CN101196438B (zh)

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DE102012224260A1 (de) * 2012-12-21 2014-06-26 Robert Bosch Gmbh Vorrichtung und Verfahren zur Messung der Profiltiefe eines Reifens
CN110214265B (zh) * 2017-01-27 2021-06-11 株式会社普利司通 轮胎接地特性评价方法

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JP2974593B2 (ja) * 1995-02-28 1999-11-10 中田エンヂニアリング株式会社 タイヤ接地面の画像処理装置
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