Method and apparatus for warning of driving on a potentially dangerous
road surface by using the ratio of wheel speeds
    14.
    发明授权
    Method and apparatus for warning of driving on a potentially dangerous road surface by using the ratio of wheel speeds 失效
    通过使用车轮速度的比例来警告在潜在危险的路面上行驶的方法和装置

    公开(公告)号:US6121895A

    公开(公告)日:2000-09-19

    申请号:US452805

    申请日:1999-12-02

    CPC classification number: G01P3/44 B60T17/18 B60T8/172 G01P11/02

    Abstract: A method of warning a vehicle driver when the vehicle may be driving on a potentially hazardous road surface, the vehicle having a wheel or wheels at front left and right and rear left and right positions on the vehicle, comprising repeating the steps of measuring the instantaneous speed of the wheel or wheels at each of the four positions, calculating the ratio of the speeds of the wheels on the left and the ratio of the speeds of the wheels on the right and deriving and storing the difference between these ratios, comparing the current difference with the previously stored difference and in the event that the absolute value of the comparison between the differences exceeds a predetermined value issuing an alarm to the driver that the road surface may have varying frictional characteristics.

    Abstract translation: 一种在车辆可能在潜在危险的路面上行驶时警告车辆驾驶员的方法,车辆在左前方具有车轮或车轮,在车辆上具有右后位置和左后位置,包括重复以下步骤:测量瞬时 在四个位置的每个位置处的车轮或车轮的速度,计算左侧的车轮的速度与右侧的车轮的速度的比率,并导出并存储这些比率之间的差,比较当前 与先前存储的差异以及差异之间的比较的绝对值超过对驾驶员发出警告的预定值,路面可能具有变化的摩擦特性的情况。

    Variable spectral filter apparatus
    16.
    发明授权
    Variable spectral filter apparatus 有权
    可变光谱滤波装置

    公开(公告)号:US08059327B1

    公开(公告)日:2011-11-15

    申请号:US12770160

    申请日:2010-04-29

    CPC classification number: G02B26/007

    Abstract: A variable spectral filter apparatus has a filter support rotatable about a single axis of rotation and has at least first and second transmissive spectral filters, each spectral filter having a filter width defined by its first and second edges, wherein the filter width is orthogonal to the axis. The first edges of the filters are equidistant from the axis of rotation when the filter support is rotated to any angle. The plane of each of the spectral filters is parallel to the axis. Rotational positions of the filter support about the axis of rotation, over a first 60 degree range of angles, define, between the first and second edges of at least the first spectral filter, an undeviated filtered light path of at least half the filter width that extends orthogonally with respect to the axis. A rotational actuator is energizable to rotate the filter support about the axis.

    Abstract translation: 可变光谱滤波器装置具有可围绕单个旋转轴线旋转的滤光器支架,并且具有至少第一和第二透射光谱滤光器,每个光谱滤光器具有由其第一和第二边缘限定的滤光器宽度,其中滤光片宽度与 轴。 当过滤器支撑件旋转到任何角度时,过滤器的第一边缘与旋转轴线等距。 每个频谱滤波器的平面平行于轴。 过滤器支撑件围绕旋转轴线的旋转位置在第一60度的角度范围内限定至少第一光谱滤光器的第一和第二边缘之间的至少一半的过滤器宽度的未经过滤的光路, 相对于轴正交延伸。 旋转致动器可激励以围绕轴线旋转过滤器支撑件。

    Variable Spectral Filter Apparatus
    17.
    发明申请
    Variable Spectral Filter Apparatus 有权
    可变光谱滤波器

    公开(公告)号:US20110267678A1

    公开(公告)日:2011-11-03

    申请号:US12770160

    申请日:2010-04-29

    CPC classification number: G02B26/007

    Abstract: A variable spectral filter apparatus has a filter support rotatable about a single axis of rotation and has at least first and second transmissive spectral filters, each spectral filter having a filter width defined by its first and second edges, wherein the filter width is orthogonal to the axis. The first edges of the filters are equidistant from the axis of rotation when the filter support is rotated to any angle. The plane of each of the spectral filters is parallel to the axis. Rotational positions of the filter support about the axis of rotation, over a first 60 degree range of angles, define, between the first and second edges of at least the first spectral filter, an undeviated filtered light path of at least half the filter width that extends orthogonally with respect to the axis. A rotational actuator is energizable to rotate the filter support about the axis.

    Abstract translation: 可变光谱滤波器装置具有可围绕单个旋转轴线旋转的滤光器支架,并且具有至少第一和第二透射光谱滤光器,每个光谱滤光器具有由其第一和第二边缘限定的滤光器宽度,其中滤光片宽度与 轴。 当过滤器支撑件旋转到任何角度时,过滤器的第一边缘与旋转轴线等距。 每个频谱滤波器的平面平行于轴。 过滤器支撑件围绕旋转轴线的旋转位置在第一60度角度范围内限定至少第一光谱滤光器的第一和第二边缘之间的至少一半的过滤器宽度的未变形的滤光光路, 相对于轴正交延伸。 旋转致动器可激励以围绕轴线旋转过滤器支撑件。

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