Electricity: electrical systems and devices – Electrical speed signal processing systems – With speed analog electrical signal
Patent
1980-10-23
1982-06-29
Miller, J. D.
Electricity: electrical systems and devices
Electrical speed signal processing systems
With speed analog electrical signal
324175, G01P 336
Patent
active
043374972
ABSTRACT:
Device for detecting the direction and change of rotational speed of a rotating element. In one embodiment, a pair of phototransistors which are energized by a light source according to an ordered sequence through a disk formed by opaque and transparent sectors coupled to the rotating element. The two phototransistors controls, when energized the switching on of two transistors which enable the discharge of two capacitors, charging with a predetermined time constant in the interval time between discharges. The discharge control action of one of the two phototransistors on a first capacitance is however conditioned by the charge level reached by the other capacitance and therefore both by the order in which phototransistors are energized and by the energization frequency. If the energization frequency is lower than a certain limit or the energization order is not the correct one, the first capacitor reaches a charge level higher than a reference value and supplies an indication signal accordingly.
REFERENCES:
patent: 3299702 (1967-01-01), Hulme
patent: 3944923 (1976-03-01), Luteran
patent: 4037157 (1977-07-01), Campbell
patent: 4228396 (1980-10-01), Palombo et al.
patent: 4237517 (1980-12-01), Myers
Grayson George
Honeywell Information Systems Inc.
Miller J. D.
Prasinos Nicholas
Reiling Ronald T.
LandOfFree
Device for detecting the direction and change of rotational spee 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 detecting the direction and change of rotational spee, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for detecting the direction and change of rotational spee will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2166590