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    • 3. 发明授权
    • Method and an apparatus for measuring the inclination angle of a pile of
a powdery or granular material
    • 用于测量一堆粉状或颗粒状材料的倾斜角度的方法和装置
    • US5986750A
    • 1999-11-16
    • US103552
    • 1998-06-24
    • Shuji SasabeYoshiyuki InoueKenji TakebayashiToyokazu YokoyamaTadami Hanakawa
    • Shuji SasabeYoshiyuki InoueKenji TakebayashiToyokazu YokoyamaTadami Hanakawa
    • G01B11/26G01N11/00G01N33/00G01B11/24G01F11/28
    • G01N11/00G01B11/26G01N2033/0091
    • By the side of a powdery or granular material stacked in a conical pile on a horizontal surface, a sensor that emits sensor light and, by receiving light reflected from a spot illuminated by the sensor light, detects the distance to the pile of the powdery or granular material is placed with the optical axis of the sensor light horizontal. While the sensor is moved in a horizontal direction perpendicular to the optical axis of the sensor light, the distance to each of a plurality of measurement points arranged horizontally at regular intervals along a line that runs on said pile of the powdery or granular material so as to face the movement path of the sensor. This step is performed every time the sensor is moved vertically a predetermined distance at a time. In each session of the step, a point is extracted that is closest to the sensor, and a function describing a straight line approximating the curve through all of the thus extracted points is determined by the least-squares method. Then, the angle of this straight line with respect to a horizontal plane is determined.
    • 在堆叠在水平表面上的圆锥形桩中的粉状或颗粒状材料的一侧,发射传感器光并且通过接收从由传感器光照射的光反射的光的传感器检测到与粉末或 粒状材料放置在传感器光轴水平方向。 当传感器在垂直于传感器光的光轴的水平方向上移动时,沿着沿着在所述粉末或颗粒状材料堆上运行的线以水平定期排列的多个测量点的距离,以便 面对传感器的运动路径。 每当传感器一次垂直移动预定距离时执行该步骤。 在步骤的每个会话中,提取最靠近传感器的点,并且通过最小二乘法确定描述通过所有这样提取的点近似于曲线的直线的函数。 然后,确定该直线相对于水平面的角度。