Biaxial inclination sensor

Details Biaxial inclination sensor Biaxial inclination sensor

1996-02-08

1998-07-07

Cuchlinski, Jr., William A.

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

33379, G01C 906, G01C 924

Patent

active

057749965

ABSTRACT:
A biaxial inclination sensor including, in the inner bottom of a circular liquid chamber 11 formed in a sensor holder 1 made of an insulating material and having a bottom surface 28 made horizontal, one common electrode 2 made of 18K gold having a low ionization tendency in a central position and vertical with respect to the bottom surface 28 and four outer electrodes 3 made of the same material as the common electrode 2 and passing vertically through the bottom surface 28 at points of intersection of two horizontal orthogonal lines passing through the center and a circle of a predetermined radius about the center and all having the same surface area. An opening in the liquid chamber 11 of the sensor holder 1 is closed off in a liquidproof manner by a glass window plate 4 having a spherical concave portion 9 of a surface roughness less than JIS Rmax 0.25 in its inner surface. A gas bubble 8 and an electrolyte 7 made by mixing pure water as a solvent, magnesium sulfate as a solute and anhydrous methanol as a solution in such ratios that the impedance between the electrodes is 10K.OMEGA. are sealed into the sealed liquid chamber 11 in amounts such that the common electrode 2 is always submerged in the electrolyte and does not make contact with the gas bubble 8. The biaxial inclination sensor has a high resolution and reproducibility and stability of detection with which it is possible to secure a high level indication of inclination angle zero by attitude control.

REFERENCES:
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