公开(公告)号：US3776642A

公开(公告)日：1973-12-04

申请号：US3776642D

申请日：1972-08-01

Applicant: DICKEY JOHN CORP

Inventor： ANSON J ,  O NEAL D

IPC: G01N21/27 ,  G01N21/31 ,  G01N21/35 ,  G01N21/47 ,  G01N33/10 ,  G06F15/20 ,  G01J3/48 ,  G01N21/48

CPC classification number: G01N33/10 ,  G01N21/314 ,  G01N21/4738 ,  Y10S250/91

Abstract: A grain analyst computer is disclosed which has a quartz-iodide lamp to provide infrared radiation which is directed through a lens toward the surface of a quantity of grain which is to have certain constituents thereof analyzed. The infrared radiation is made parallel by the lens and then passes through selected filters so that only a specific frequency of the radiation impinges upon the grain sample, and this frequency provides a reflected radiation signal which has an amplitude corresponding to the quantity of a given constituent within the sample being analyzed. A plurality of pulse signals is then generated by a photocell which receives the reflected signals. These pulse signals are applied to a signal storage circuit and a signal computing circuit to provide a direct readout in terms of per cent of the constituents being analyzed. A reference standard element is automatically positioned in light-receiving relation with the light source so that the constants within the storage and computing circuits can be adjusted automatically prior to analyzing each grain sample. The plurality of filter elements are adjustably mounted to a rotating filter wheel which provides tilt adjustment to each filter element so that an exact positioning thereof can be obtained, thus accurately selecting the frequency which is to pass therethrough.

Abstract translation: 公开了一种谷物分析计算机，其具有石英碘化灯以提供红外辐射，其通过透镜朝向分析其某些成分的谷粒的表面。 红外辐射由透镜平行，然后通过选定的滤光器，使得仅辐射的特定频率照射在晶粒样品上，并且该频率提供具有对应于给定成分的量的幅度的反射辐射信号 在正在分析的样品内。 然后由接收反射信号的光电池产生多个脉冲信号。 这些脉冲信号被施加到信号存储电路和信号计算电路，以便分析的成分的百分比提供直接读出。 参考标准元件自动地定位在与光源的光接收关系中，使得可以在分析每个颗粒样品之前自动调整存储和计算电路内的常数。 多个过滤元件可调节地安装到旋转滤光轮上，该旋转滤光轮为每个滤光元件提供倾斜调节，从而可以获得精确的定位，从而精确地选择要通过的频率。