Design & realization of an optical type dual axis inclination sensor

Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT) Pub Date : 2015-03-16 DOI:10.1109/C3IT.2015.7060137

T. Sarkar, Subir Das, B. Chakraborty, H. Dutta

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Abstract

In the field of industrial automation, railways, intelligent platform, machining and other important areas where measurement of inclination of a body with respect to the gravity field plays a crucial role. In this present paper we have demonstrated an optical type dual axis inclination sensor with a precession of 0.6° and a working range of ±70° to fulfill the requirements of the above subjective areas. The sensor elements is made of a semi circular shape wooden block with a proof mass and a specially design imaging plate which are attached to its circumference edge. This fabricated block is clamped with orthogonal surface of a closed housing by a pivot arm which passes through the centre of the block, thus forming a dual axis pendulum structure. Therefore when the sensor is inclined, blocks are experiences deflection due to the gravity field of the earth. The movement of the two blocks is measured optically in two directions utilizing variation of light intensity produced by an imaging plate. The experimental result depicts a satisfactory performance of the sensor having a sensitivity of 40mv/°.

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光学型双轴倾角传感器的设计与实现

在工业自动化、铁路、智能平台、机械加工等重要领域，物体相对于重力场的倾斜度测量起着至关重要的作用。在本文中，我们展示了一种光学型双轴倾角传感器，其进动为0.6°，工作范围为±70°，以满足上述主观区域的要求。传感器元件由一个带有证明质量的半圆形木块和一个特殊设计的成像板组成，该成像板附着在其圆周边缘。该预制块通过穿过块中心的枢轴臂夹紧与封闭外壳的正交表面，从而形成双轴摆结构。因此，当传感器倾斜时，由于地球重力场的作用，块体会发生偏转。利用成像板产生的光强度的变化，在两个方向上光学地测量两个块的运动。实验结果表明，该传感器具有令人满意的性能，灵敏度为40mv/°。

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Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT)

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