Capacitive proximity sensor

Details Capacitive proximity sensor Capacitive proximity sensor

1991-09-09

1994-05-31

Chilcot, Jr., Richard E.

Measuring and testing

Dynamometers

Responsive to force

324671, G01L 116

Patent

active

053158849

ABSTRACT:
A proximity sensor based on a closed field circuit. The circuit comprises a ring oscillator using a symmetrical array of plates that creates an oscillating displacement current. The displacement current varies as a function of the proximity of objects to the plate array. Preferably the plates are in the form of a group of three pair of symmetric plates having a common center, arranged in a hexagonal pattern with opposing plates linked as a pair. The sensor produces logic level pulses suitable for interfacing with a computer or process controller. The proximity sensor can be incorporated into a load cell, a differential pressure gauge, or a device for measuring the consistency of a characteristic of a material where a variation in the consistency causes the dielectric constant of the material to change.

REFERENCES:
patent: 3829850 (1974-08-01), Guetersloh
patent: 3896425 (1975-07-01), Erichsen
patent: 3944792 (1976-03-01), Sautner
patent: 4016490 (1977-04-01), Weckenmann et al.
patent: 4071820 (1978-01-01), Mushinsky
patent: 4122708 (1978-10-01), Maier
patent: 4339709 (1982-07-01), Brihier
patent: 4387601 (1983-06-01), Azegami
patent: 4451780 (1984-05-01), Ogasawara
patent: 4476430 (1984-10-01), Wright et al.
patent: 4572006 (1986-02-01), Wolfendale
patent: 4794321 (1988-12-01), Dotsko
patent: 5025223 (1991-06-01), Smith, Jr. et al.
patent: 5148126 (1992-09-01), Spencer

Affiliated with

Also associated with

Rating

Capacitive proximity sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Capacitive proximity sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Capacitive proximity sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1620747