Energy saving capacitance type measuring device for absolute mea

Details Energy saving capacitance type measuring device for absolute mea Energy saving capacitance type measuring device for absolute mea

1993-06-10

1995-08-08

Ramirez, Ellis B.

Boots, shoes, and leggings

364561, 364562, 364563, 364579, 324662, 33706, G01B 320, G01B 318

Patent

active

054405017

ABSTRACT:
A capacitance-type measuring device for absolute measurement of positions is disclosed, which comprises a displacement sensor having a fixed element and a movable element, the movable element being capacitance-coupled to the fixed element and relatively movable against the fixed element, the displacement sensor being adapted to output signals corresponding to relative positions of the movable element against the fixed element, a signal processing circuit for processing the output signals of the displacement sensor and outputting an absolute measurement value corresponding to displacement of the movable element against the fixed element, a control circuit for controlling the operations of the displacement sensor and the signal processing circuit, and a power supply for supplying electric power to the displacement sensor, the signal processing circuit, and the control circuit, wherein the control circuit activates the signal processing circuit at a suitable interval so as to perform an intermittent measurement operation.

REFERENCES:
patent: 4420745 (1983-12-01), Dray et al.
patent: 4586260 (1986-05-01), Baxter et al.
patent: 4634953 (1987-01-01), Shoji et al.
patent: 4702613 (1987-10-01), Ohtawa
patent: 4879508 (1989-11-01), Andermo
patent: 4974164 (1990-11-01), Lewis et al.

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