CN108688630B - 用于通过制动踏板将触觉上的信息输出给机动车的驾驶员的方法和装置 - Google Patents
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Abstract
本发明涉及一种用于通过制动踏板将触觉上的信息输出给机动车的驾驶员的方法,‑其中所述制动踏板的踏板特性曲线能够在行驶期间与驾驶员无关地进行修改,‑其中借助于环境传感装置来获知对所述机动车来说潜在地有危险的交通情况即将到来;并且‑根据所获知到的交通情况来修改所述踏板特性曲线。
Description
技术领域
本发明涉及用于通过制动踏板将触觉上的信息输出给机动车的驾驶员的一种方法和一种装置。
背景技术
熟知的轿车制动系统的制动踏板具有力-行程-特性曲线,所述力-行程-特性曲线在开发车辆时被设定并且不能根据情况来调整。随着能够在制动过程中回收能量的电驱动装置的采用,开发了下述解决方案,所述解决方案对所述制动踏板的力-行程-特性曲线进行调整并且借助于“压点”或者压力点来向驾驶员传达所述制动踏板的位置,自该位置起摩擦制动器进行干预。在这个位置中制动踏板的阻力或者反作用力得到提高。用这样的系统驾驶员能够以纯电的方式来进行制动、对能量再生进行优化并且只有在有必要时才使用所述摩擦制动器。
从DE 10 2011 117 297 A1中公开了一种用于运行驾驶员协助系统的方法和一种所属的驾驶员协助系统。在此,作为输出器件而设置了扬声器(Lautsprecher)或者鸣音发生器(Signaltongenerator)以及不同的触觉器件(Haptikmittel)、比如在方向盘(Lenkrad)中以及在脚踏板上的振动马达。
发明内容
本发明涉及一种用于通过制动踏板将触觉上的信息输出给机动车的驾驶员的方法,
-其中所述制动踏板的踏板特性曲线能够在行驶期间与驾驶员无关地进行修改,
-其中借助于环境传感装置来获知对所述机动车来说潜在地有危险的交通情况即将到来,并且
-根据所获知到的交通情况来修改所述踏板特性曲线。
由此,在可靠地应对即将来临的交通情况时对驾驶员进行支持。
本发明的一种有利的设计方案的特征在于,所述踏板特性曲线描绘了表示通过所述制动踏板作用于驾驶员脚上的反作用力的特征的反作用力大小与表示所述制动踏板的踏板行程的特征的踏板行程大小之间的关联。
本发明的一种有利的设计方案的特征在于,获知对即将到来的交通情况的应对来说最佳的制动力并且如此修改所述踏板特性曲线,从而,如果通过驾驶员所施加的制动力小于所述最佳的制动力,就降低所述制动踏板的反作用力,并且如果通过驾驶员所施加的制动力大于所述最佳的制动力,就提高所述制动踏板的反作用力。由此根据所述最佳的制动力来激发驾驶员更弱或更强烈地操纵所述制动踏板并且就这样将其所施加的制动力朝所获知的最佳的制动力的方向引导。
本发明的一种有利的设计方案的特征在于,即将到来的交通情况是即将到来的转弯。
本发明的一种有利的设计方案的特征在于,即将到来的交通情况是即将到来的道路交叉口。
本发明的一种有利的设计方案的特征在于,即将到来的交通情况是接近前面行驶的车辆。
本发明的一种有利的设计方案的特征在于,即将到来的交通情况是被随后的(nachfolgendes)车辆接近。
本发明的一种有利的设计方案的特征在于,所述环境传感装置是摄像头系统、雷达系统、超声波系统、GPS系统或者Car2X系统。
此外,本发明包括一种装置,该装置包含下述器件,所述器件构造用于实施所述按本发明的方法。在此尤其涉及一种控制器,在该控制器中保存了所述按本发明的方法的程序代码。
附图说明
附图包括图1到3。
图1示出了力-行程-特性曲线的提高(Erhöhung)。
图2示出了力-行程-特性曲线的降低(Absenkung)。
图3示出了所述按本发明的方法的一种设计方案的基本的(grundlegenden)流程。
具体实施方式
近年来已经越来越多地在轿车系统中采用了用于进行环境检测的传感器。这比如是摄像头系统、雷达系统、超声波系统、GPS系统或者Car2X系统。本发明研究使制动踏板的力-行程-特性曲线与所检测的车辆环境或者行驶情况(Fahrsituation)相匹配,用于向驾驶员传达(vermitteln)用于最佳的(optimale)制动的重要的触觉上的提示(Hinweise)。由此产生
-用于驾驶员的舒适性益处,因为驾驶员由于触觉上的干预(Eingriffe)而能够行驶最佳的减速曲线(Verzögerungsprofile),所述最佳的减速曲线提高(erhöhen)行驶舒适性以及
-用于驾驶员的安全性益处,因为驾驶员通过所述触觉上的干预而能够行驶(fahren)将事故风险最小化的减速曲线并且此外通过所述触觉上的干预来传达信息,而不必将其目光离开道路(Straße)。
作为触觉上的干预,不仅能够考虑所述制动踏板的力-行程-特性曲线的变化而且能够考虑借助于所述制动踏板的振动将触觉上的信息传达给驾驶员。
在图1和2中相应地沿着横坐标方向绘示了(aufgetragen)制动踏板行程s,沿着纵坐标方向绘示了阻力F,所述制动踏板以所述阻力反作用于驾驶员脚。这样的特性曲线被称为力-行程-特性曲线。
所述特性曲线100和200在此代表着标准特性曲线,在不考虑车辆环境的情况下设定了(eingestellt)所述标准特性曲线。
在图1中110代表着一种特性曲线,对于该特性曲线来说自用101来表示(bezeichneten)的压力点起相对于所述标准特性曲线所述阻力或者反作用力得到提高。也就是说,如果驾驶员超过属于点101的踏板行程,则显著地提高所述阻力。在这种情况下驾驶员应该受到激励,还没有更强烈地进行制动。当然,在这种情况下也能够对反作用力施加影响(überstimmen),方式是:驾驶员以更高的力来操纵所述制动踏板。
在图2中210代表着特性曲线,对于该特性曲线来说自用201表示的压力点起降低所述阻力或者反作用力。也就是说,如果驾驶员超过属于点201的踏板行程,则将所述阻力保持恒定或者还仅仅缓慢地提高所述阻力。作用于驾驶员脚上的反作用力小于由驾驶员通常所预料的反作用力并且驾驶员应该如此受到激励,更强烈地操纵所述制动踏板。自所述点202起结束所述反作用力的降低,并且所述特性曲线210又与所述标准特性曲线200相匹配。
为了向驾驶员传达额外的信息、比如导入全制动的要求,也能够用制动踏板引起(aktuiert)不同的振动模式。
现在接下来对几种实例情况进行观察。
1)借助于GPS数据、比如转弯半径和转弯斜度(Kurvenneigung)以及从车辆外部的数据库中无线地接收的数据、比如道路状态和车行道摩擦系数,能够获知最佳的转弯速度,所述最佳的转弯速度允许安全地通过紧接着即将到来的转弯。如果驾驶员在转弯之前行驶得太快并且没有足够强烈地进行制动,那就能够降低(erniedrigen)所述制动踏板的阻力,用于激发(motivieren)驾驶员进行更加强烈的制动。这比如能够通过以下方式来进行:在图2的实例中从踏板特性曲线200转换到踏板特性曲线210上。在图2中的所绘入的点202上制动踏板反作用力又得到提高,因为达到了最佳的制动压力。如果驾驶员没有足够强烈地进行制动,那也能够额外地用所述制动踏板的触觉上的振动来要求他补充踩踏(Nachtreten)制动器。
2)借助于GPS数据、比如相对于紧接着靠近的交叉口的间距和道路斜度以及从车辆外部的数据库中无线地接收的数据、比如道路状态和车行道摩擦系数,能够获知最佳的减速曲线,所述最佳的减速曲线可以在紧接着即将到来的道路交叉口之前可靠地让车辆进入停止状态(Stillstand)。如果驾驶员在交叉口之前行驶得太快并且没有足够强烈地进行制动,那就能够降低所述制动踏板的阻力,用于激发驾驶员进行更加强烈的制动。这比如能够通过以下方式来进行:在图2的实例中从踏板特性曲线200转换到踏板特性曲线210。在图2中的所绘入的点202上,所述踏板反作用力又得到提高,因为达到了所述最佳的制动压力。如果驾驶员没有足够强烈地进行制动,那也能够额外地用所述制动踏板的触觉上的振动来要求他补充踩踏制动器。
3)借助于摄像头数据、雷达数据和Car2X数据,能够获知其它的交通参与者的速度曲线并且从中获知自身的车辆的最佳的速度曲线,用于避免可能的事故。可能的是,驾驶员过高估计相对于前面行驶的车辆的间距并且太小地进行制动。如果驾驶员而后突然注意到,当前的车辆减速不够,那么他就补充踩踏制动踏板并且甚至可能触发紧急制动。如果识别出驾驶员没有足够强烈地进行制动这种情况,那就能够降低制动踏板的阻力,用于激发驾驶员进行更强烈的制动。这比如能够通过以下方式来进行:在图2的实例中从踏板特性曲线200转换到踏板特性曲线210。在图2中所绘入的点202上制动踏板反作用力又得到提高,因为达到了最佳的制动压力。如果驾驶员没有足够强烈地进行制动,那也能够额外地用所述制动踏板的触觉上的振动来要求他补充踩踏制动器。
4)借助于摄像头数据、雷达数据和Car2X数据,能够获知其它交通参与者的速度曲线并且从中获知自身的车辆的最佳的速度曲线,用于避免可能的事故。可能的是,在自身的车辆后面行驶的车辆没有及时进行制动并且撞到自身的车辆上。如果现在借助于摄像头数据、雷达数据和Car2X数据识别到在自身的车辆前面有足够长的自由的制动距离可用,那就能够如此改变按照图1的踏板特性曲线,使得所述制动踏板具有更高的阻力。由此指示驾驶员不太剧烈地进行制动并且由此降低相对于跟随车辆(Folgefahrzeug)的相对的速度。由此降低可能被跟随车辆追尾(Heckaufpralls)的可能性并且也降低事故严重性。
5)借助于GPS数据、比如转弯半径和转弯斜度以及从车辆外部的数据库中无线地接收的数据、比如道路状态和车行道摩擦系数能够获知最佳的转弯速度和最佳的制动点,其允许以最大可能的动力通过紧接着即将到来的转弯。能够为驾驶员比如在对公共的车辆交通来说禁止的赛道上释放这样的功能,用于允许驾驶员提高其驾驶技巧(fahrerisch)的能力。
在图3中示出了用于通过制动踏板将触觉上的信息输出给机动车的驾驶员的方法的一种设计方案的流程。在方框300中开始所述方法之后,在方框301中借助于环境传感装置来检测,是否面临着对所述机动车来说潜在地有危险的交通情况。如果不是这种情况,则返回到方框300。但是,如果是这种情况,则在方框302中获知下述制动力,所述制动力对于即将到来的交通情况的可靠的应对来说是最佳的。在方框303中,将由驾驶员所施加的制动力与最佳的制动力进行比较并且根据此对所述制动踏板的踏板特性曲线进行调整(angepasst),用于将驾驶员朝最佳的制动力进行引导。在方框305中结束所述方法。
Claims (8)
1.用于通过制动踏板将触觉上的信息输出给机动车的驾驶员的方法,
-其中所述制动踏板的踏板特性曲线能够在行驶期间与驾驶员无关地进行修改,
-其中借助于环境传感装置来获知对所述机动车来说潜在地有危险的交通情况即将到来,并且
-根据所获知到的交通情况来修改所述踏板特性曲线,
其中获知对即将到来的交通情况的应对来说最佳的制动力并且如此修改所述踏板特性曲线,从而,如果通过驾驶员所施加的制动力小于所述最佳的制动力,就降低所述制动踏板的反作用力,并且如果通过驾驶员所施加的制动力大于所述最佳的制动力,就提高所述制动踏板的反作用力。
2.按权利要求1所述的方法,其特征在于,所述踏板特性曲线描绘了表示通过所述制动踏板作用于驾驶员脚上的反作用力(F)的特征的反作用力大小与表示所述制动踏板的踏板行程的特征的踏板行程大小(s)之间的关联。
3.按权利要求1所述的方法,其特征在于,即将到来的交通情况是即将到来的转弯。
4.按权利要求1所述的方法,其特征在于,即将到来的交通情况是即将到来的道路交叉口。
5.按权利要求1所述的方法,其特征在于,即将到来的交通情况是接近前面行驶的车辆。
6.按权利要求1所述的方法,其特征在于,即将到来的交通情况是被随后的车辆接近。
7.按权利要求1所述的方法,其特征在于,所述环境传感装置是摄像头系统、雷达系统、超声波系统、GPS系统或者Car2X系统。
8.用于通过制动踏板将触觉上的信息输出给机动车的驾驶员的装置,包含下述器件,所述器件构造用于实施按权利要求1至7中任一项所述的方法。
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