Measuring and testing – Vibration – Sensing apparatus
Patent
1985-08-16
1987-01-27
Ciarlante, Anthony V.
Measuring and testing
Vibration
Sensing apparatus
324 61R, 324 59, 324 711, 324207, G01R 2726
Patent
active
046386700
ABSTRACT:
Apparatus for the determination of the location and/or distance traveled by a piston in a cylinder. This apparatus can easily be integrated into shock absorbers, vibration dampers and pneumatic springs, and exhibits a high degree of insensitivity to at least electrical interference, therefore being particularly well-suited for operation under unfavorable ambient conditions. As a result of the use of the most modern semiconductor technology and a suitable geometric arrangement, a very good resolution can be achieved, along with an automatic recognition of the direction of piston travel. Such an apparatus has a number of semiconductor elements; in one embodiment, in a beam fastened inside the cylinder or, in another embodiment, in the hollow piston rod. These semiconductor elements are arranged so that, over the axial length of the piston stroke, the distances between two neighboring semiconductor elements correspond to a specified measurement value resolution. The semiconductor elements are connected with an electronic calculating or computing system, and the component opposite the semiconductor elements is an electrode which generates an electric field. This electrode is connected in operation to a source of electrical voltage or a ground.
REFERENCES:
patent: 2978638 (1961-04-01), Wing et al.
patent: 3805150 (1974-04-01), Abbe
patent: 3833094 (1974-09-01), Grossman
patent: 4107975 (1978-08-01), Gargile
patent: 4206401 (1980-06-01), Meyer
patent: 4577509 (1986-03-01), Moser
patent: 4587850 (1986-05-01), Moser
Boge GmbH
Ciarlante Anthony V.
Ljungman Nils H.
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