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    • 2. 发明申请
    • OPTICAL POTENTIOMETER WITH TEMPERATURE DRIFT COMPENSATION
    • 具有温度补偿补偿的光电位计
    • WO2007048167A1
    • 2007-05-03
    • PCT/AU2006/001487
    • 2006-10-10
    • AIMBRIDGE PTY LTDROSENKRANZ, Hans-GuntherARMSTRONG, Mark, FrederickRUSSELL, JamesMAJOR, Peter, John
    • ROSENKRANZ, Hans-GuntherARMSTRONG, Mark, FrederickRUSSELL, JamesMAJOR, Peter, John
    • G01D5/347B60K26/02B63H21/22
    • G01D5/34784
    • A potentiometer is disclosed which comprises an opaque screen element (10) and light emitters and collectors (92) for transmitting light through the screen and detecting the light transmitted through the screen. The screen has three sections (A, V and B). The sections (A, V and B) have bars which are parallel to one another and extend transverse to the direction of movement of the screen (10). The section (A) has bars which are arranged in groups comprising the same number of bars, but each of a different thickness. The section (V) has two parts (35, 36), the first part has bars which are formed in the same manner as the section (A) except they are a mirror image to the bars in section (A) and each group comprises less bars than are in the groups in section (A). The second part of section (V) has individual bars which increase in thickness. Section (B) is a mirror image of section (A). This configuration allows for any drifting of voltage indicative of a change in light intensity which is detected by the emitter to be identified and compensated for because the intensity of light passing through the sections and plotted against position forms a U or V-shaped profile, with the apex identifying the maximum or minimum light intensity and therefore voltage at the collector.
    • 公开了一种电位计,其包括不透明屏元件(10)和用于透过屏幕传输光并检测透过屏幕的光的发光器和收集器(92)。 屏幕有三个部分(A,V和B)。 部分(A,V和B)具有彼此平行并且横向于屏幕(10)的移动方向延伸的条。 部分(A)具有条,它们被布置成包括相同数量的棒,但每个具有不同的厚度。 部分(V)具有两部分(35,36),第一部分具有与部分(A)相同的方式形成的条,除了它们是部分(A)中的条的镜像,并且每个组包括 少于(A)部分中的组。 部分(V)的第二部分具有增加厚度的单个条。 (B)部分是(A)部分的镜像。 这种配置允许指示由发射器检测到的光强度变化的电压的任何漂移将被识别和补偿,因为通过部分的光的强度和对位置的绘制形成U或V形轮廓,具有 顶点识别最大或最小光强度,因此识别收集器处的电压。