-
公开(公告)号：US5642299A
公开(公告)日：1997-06-24
申请号：US693681
申请日：1996-08-12
申请人： Larry C. Hardin , Larry V. Nash
发明人： Larry C. Hardin , Larry V. Nash
摘要： A passive optical speed and distance measuring system includes a pair of camera lenses positioned along a common baseline a predetermined distance apart and controlled by an operator to capture images of a target at different times. The camera lenses are focused on light sensitive pixel arrays which capture target images at offset positions in the line scans of the pixel arrays. A video signal processor with a computer determines the location of the offset positions and calculates the range to the target by solving the trigonometry of the triangle formed by the two camera lenses and the target. Once the range to the target is known at two different times the speed of the target is calculated.
摘要翻译： 无源光学速度和距离测量系统包括沿着公共基准线定位的一对相机透镜，预定距离分开并由操作者控制以在不同时间捕获目标的图像。 相机镜头聚焦在光敏像素阵列上，其在像素阵列的线扫描中的偏移位置捕获目标图像。 具有计算机的视频信号处理器确定偏移位置的位置，并通过求解由两个相机镜头和目标形成的三角形的三角法来计算到目标的范围。 一旦到达目标的范围在两个不同的时间已知，则计算目标的速度。
-
公开(公告)号：US5481355A
公开(公告)日：1996-01-02
申请号：US102345
申请日：1993-08-05
CPC分类号： A63B24/0021 , A63B69/3658 , G01P3/36 , G01P3/68 , A63B2024/0031 , A63B2024/0034 , A63B2220/30 , A63B2220/35 , A63B2220/805
摘要： The initial movement of a spherical body is detected by detecting the intersection with a light beam emitted from trigger light illuminating portion 2 to trigger light-receiving portion 3, and as a result, measurement of time by an arithmetic processing unit is started. During flight, spherical body 1 intersects light beams emitted from surface velocity sensors 4 and 5, the reflected light therein is detected by these surface velocity sensors 4 and 5, and the surface velocity of spherical body 1 is then measured. Spherical body 1 continues in flight and intersects at least two light beams irradiated from multi-beam illuminating portion 6 which are detected by multi-beam light-receiving portion 7. Based on a signal from multi-beam light-receiving portion 7 the arithmetic processing unit measures the time of intersection of spherical body 1 with a light beam, and then calculates the angle of elevation, horizontal angle, velocity and surface velocity of spherical body 1 based on the aforementioned measured time period. Furthermore, this arithmetic processing unit also calculates the amount of directional rotation of spherical body 1 based on the aforementioned calculated angle of elevation, horizontal angle, velocity and surface velocity of spherical body 1.
摘要翻译： 通过检测与从触发光照射部分2发射的光束的交点来触发光接收部分3来检测球体的初始移动，结果，开始由算术处理单元测量时间。 在飞行中，球体1与表面速度传感器4和5发射的光束相交，其中的反射光被这些表面速度传感器4和5检测，然后测量球体1的表面速度。 球形体1在飞行中继续，并与由多光束照射部分6照射的至少两个光束相交，由多光束光接收部分7检测。根据来自多光束光接收部分7的信号，算术处理 单位测量球体1与光束的交叉时间，然后根据上述测量时间周期计算球体1的仰角，水平角，速度和表面速度。 此外，该算术处理单元还基于上述计算的球体1的仰角，水平角，速度和表面速度来计算球体1的定向旋转量。
-
公开(公告)号：US4727258A
公开(公告)日：1988-02-23
申请号：US854450
申请日：1986-04-21
申请人： Egon Tyssen , Stefan Scholz
发明人： Egon Tyssen , Stefan Scholz
摘要： For passive range metering of moving vehicles a receiver is used having two detectors spaced apart and directed to the path of the vehicle which moves with constant speed and the length of which is known. The receiver measures the pass-through time of the image of the vehicle through the first detector and furthermore measures the traveling time of the image of the vehicle from one detector to the other. The distance E can be calculated by equation ##EQU1## wherein f is the focal distance of the receiver optics, Q.sub.t is the quotient of the measured time values, l is the length of the vehicle.
摘要翻译： 对于移动车辆的被动测距计量，使用接收器，其具有间隔开的两个检测器并被引导到以恒定速度移动并且其长度已知的车辆路径。 接收器通过第一检测器测量车辆的图像的通过时间，并且还测量车辆的图像从一个检测器到另一个的行进时间。 距离E可以通过公式
计算，其中f是接收机光学器件的焦距，Qt是测量时间值的商，l是车辆的长度。 -
公开(公告)号：US4652121A
公开(公告)日：1987-03-24
申请号：US580889
申请日：1984-02-16
申请人： Sho Ito , Hiroshi Horikoshi , Kumio Kasahara
发明人： Sho Ito , Hiroshi Horikoshi , Kumio Kasahara
CPC分类号： G01P3/68
摘要： A moving body measuring instrument is disclosed which projects, from predetermined locations thereof, a plurality of beams of light at predetermined angles into a same plane, receives, at predetermined locations thereof, the beams reflected from a moving body as it moves to intersect with the beams, calculates parameters of the motion of the moving body in accordance with predetermined operation from timing data of the beams received, and indicates the results of the calculations on an indicator. The moving body has a light reflective member provided thereon which reflects a beam for measurement toward a direction incident thereto irrespective of its incident angle, and substantially same locations are provided at which beams are projected and received.
摘要翻译： 公开了一种移动体测量仪器，其从预定位置将预定角度的多个光束投射到同一平面中，在其预定位置处接收从移动体反射的光束，当它们与 根据所接收的波束的定时数据根据预定的操作计算移动体的运动的参数，并且指示在指示器上的计算结果。 移动体具有设置在其上的光反射构件，其反射用于测量的光束朝向入射到其的方向，而不管其入射角如何，并且提供基本相同的位置，在该位置投射和接收光束。
-
公开(公告)号：US4135817A
公开(公告)日：1979-01-23
申请号：US885065
申请日：1978-03-09
申请人： William R. Young , Charles W. Stump
发明人： William R. Young , Charles W. Stump
摘要： Apparatus for measuring an aircraft's horizontal speed and height above ground without the need for airborne cooperative devices. Two ground level TV cameras separated by a measured distance and pointed at zenith are placed in line with the projection of the expected path of the aircraft. Speed is determined by measuring the time that it takes the aircraft to travel between the fields of view of the two TV cameras using zenith crossings as the reference points. Height is determined by correlating the speed with the time required to cross the field of view of either of the two cameras.
摘要翻译： 用于测量飞机水平速度和地面高度的装置，无需空中协作装置。 两个地平面电视摄像机与被测距离分开并指向天顶的位置与飞机预期路径的投影一致。 速度通过测量飞机在使用天顶交叉点的两台电视摄像机的视野之间行进的时间作为参考点来确定。 通过将速度与跨越两个相机中的任一个的视场所需的时间相关联来确定高度。
-
公开(公告)号：US4100599A
公开(公告)日：1978-07-11
申请号：US753044
申请日：1976-12-22
申请人： Robert B. Nally
发明人： Robert B. Nally
摘要： A method and apparatus is disclosed for determining the velocity of a document over a fixed distance of travel. Sensing means are provided for generating signals which are used in determining the value of the time the document requires to move over the fixed distance. Using terms of a Taylor series expansion of the velocity equation, a value of the velocity is determined utilizing digital elements requiring only multiplication and addition operations. The elements include a digital multiplier and accumulator together with a plurality of storage devices which utilize the value of the time together with a plurality of predetermined constants to determine and output the value of the velocity to a display which displays the velocity in numerical form.
摘要翻译： 公开了一种用于确定文件在固定距离上的速度的方法和装置。 提供感测装置用于产生用于确定文件需要在固定距离上移动的时间的值的信号。 使用速度方程的泰勒级数扩展的项，使用仅需要乘法和加法运算的数字元素来确定速度的值。 这些元件包括数字乘法器和累加器以及多个存储装置，这些存储装置利用时间的值与多个预定常数一起确定并将速度值输出到以数字形式显示速度的显示器。
-
97.发明授权Method and device for detecting the velocity of droplets formed from a liquid stream 失效用于检测从液体流形成的液滴的速度的方法和装置
公开(公告)号：US3907429A
公开(公告)日：1975-09-23
申请号：US49569674
申请日：1974-08-08
申请人： IBM
摘要： Droplets from a liquid stream are directed between a pair of apertures and a light source, which is strobed at a selected frequency and directed toward the apertures. In one embodiment, the apertures are spaced less than a wavelength of the droplets apart and the light source is strobed at a frequency other than the frequency of the droplets. The time between when a first of the apertures is blocked by a droplet in the stream as indicated by the light being broken during a strobe and the time when a second of the apertures is blocked by another droplet when the light source is strobed is counted. This period of time will give the velocity of the droplets, and correction of the velocity is made, if the velocity of the droplets is not at the desired velocity, by changing the pressure, for example, of the manifold supplying the liquid stream until the desired velocity is obtained. In another embodiment, the apertures are spaced from each other a wavelength or an integral of the wavelength of the droplets, and the light source is strobed at the same frequency as the frequency at which the droplets are generated. The strobing frequency has its phase changed relative to the frequency of drop generation and the pressure of the stream changed until both of the apertures are blocked simultaneously. Any deviation from this indicates that the velocity of the droplets has changed and correction must be made.
摘要翻译： 来自液体流的液滴被引导在一对孔和光源之间，该光源以选定的频率被选通并指向孔。 在一个实施例中，孔径间隔小于液滴的波长，并且光源以不同于液滴的频率的频率被选通。 在第一个孔之间的时间之间被流中的液滴阻挡，如在选通期间被断开的光所示，并且当光源被选通时，第二个孔被另一个液滴阻挡的时间被计数。 这个时间段将给出液滴的速度，如果液滴的速度不是所需的速度，则通过改变供应液体流的歧管的压力直到 获得所需的速度。 在另一个实施例中，孔彼此间隔开波长或液滴的波长的整体，并且以与产生液滴的频率相同的频率选通光源。 选通频率相对于液滴产生的频率具有相位变化，并且流的压力改变，直到两个孔同时被阻挡。 与此有任何偏差，表示液滴的速度发生变化，必须进行校正。
-
公开(公告)号：US3708750A
公开(公告)日：1973-01-02
申请号：US3708750D
申请日：1970-08-20
申请人： AUTONUMERICS CORP
摘要： An electronic apparatus for measuring the time required for a vehicle to travel a predetermined distance such as a quarter mile. The exemplary embodiment described comprises pulse generating means for producing a pulse for each increment of distance traveled in combination with an integrating means for accumulating such pulses and producing a stop count signal when the output of the integrating means reaches a predetermined level. By adjusting a duty cycle of the individual pulses input to the integrating means, the predetermined point at which the stop count output is produced may be made to correspond to a desired predetermined value of traveled distance. Clock pulses are counted by a digital counter from a time determined by either manual or automatic start means until said stop count signal is produced at which time the counter is adapted to hold its contents until being reset. An indicator is also associated with the counter for visually displaying the contents of the counter indicating the elapsed time required for the vehicle to travel the predetermined distance as determined by the pulse width adjustment.
摘要翻译： 一种用于测量车辆行驶预定距离（例如四分之一英里）所需的时间的电子设备。 所描述的示例性实施例包括脉冲发生装置，用于与用于累积这样的脉冲的积分装置一起产生用于每次行进距离的增量的脉冲，并且当积分装置的输出达到预定水平时产生停止计数信号。 通过调整输入到积分装置的各个脉冲的占空比，可以使产生停止计数输出的预定点对应于期望的行进距离的预定值。 时钟脉冲由数字计数器从由手动或自动启动装置确定的时间计数，直到产生停止计数信号为止，此时计数器适于保持其内容直至复位。 指示器还与计数器相关联，用于可视地显示计数器的内容，其指示由脉冲宽度调整确定的车辆行驶预定距离所需的经过时间。
-
公开(公告)号：US3510809A
公开(公告)日：1970-05-05
申请号：US3510809D
申请日：1967-05-16
申请人： ITT
发明人： HUDSON JAMES L , LANGLIEB ARTHUR L
CPC分类号： G01P3/68
-
100.发明授权Velocity selector using light conducting rods and a plurality of light beam interrupters 失效使用导光杆和多个光束断续器的速度选择器
公开(公告)号：US3398288A
公开(公告)日：1968-08-20
申请号：US43323765
申请日：1965-02-16
申请人： AIR FORCE USA
发明人： SANDERS WARREN M , MELTON ELVIN W
CPC分类号： G01P15/16 , B61L25/021 , G01P3/68
-
-
-
-
-
-
-
-
-
搜索结果
328 条记录 (耗时 0.016 秒)
