Device for sensing a rotary member such as a water meter...

Details Device for sensing a rotary member such as a water meter... Device for sensing a rotary member such as a water meter...

2006-09-12

2006-09-12

Aurora, Reena (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C702S163000, C073S861780

Reexamination Certificate

active

07106054

ABSTRACT:
A device for sensing the rotation of a member rotating about an axis XX′ comprises m proximity sensors situated in a plane perpendicular to the axis XX′ and in m radial directions, m being an integer greater than or equal to 2. A mark fastened to the rotary member and eccentric to the axis XX′ modifies the amplitude response of the proximity sensors when the rotary member rotates. An excitation circuit excites the proximity sensors, each sensor supplying an excitation response when it is excited. The amplitude of the excitation response of each of the sensors is compared with a comparison threshold value during a time period referred to as an observation window to supply a logic level1or0according to whether the response amplitude is greater than or less than the comparison threshold value. The movement of the mark past one of the sensors is identified as a function of the value 0 or 1 of said logic level. The comparison threshold value or the observation window characteristic of a sensor L0, L1is reset by means of successive iterations using the value 0 or 1 of the logic level when the mark cannot be at the location of the sensor.

REFERENCES:
patent: 5450760 (1995-09-01), Lew et al.
patent: 6012339 (2000-01-01), Genack et al.
patent: 4137695 (1993-05-01), None
patent: 0467753 (1992-01-01), None
French Search report dated Jul. 6, 2004. FR 0351240.

Affiliated with

Also associated with

Rating

Device for sensing a rotary member such as a water meter... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for sensing a rotary member such as a water meter..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for sensing a rotary member such as a water meter... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3528671