DR. ROBERT C. THOMAS, MD
Anesthesiologist Assistant at Holy Cross Pkwy, Mishawaka, IN
License number
Indiana 01074784A
Category
Osteopathic Medicine
Type
Anesthesiology
License number
Indiana 4301-070317
Category
Osteopathic Medicine
Type
Anesthesiology
Address
Address
2
5215 Holy Cross Pkwy, Mishawaka, IN 46545
PO Box 1742, South Bend, IN 46634
PO Box 1742, South Bend, IN 46634
Phone
(574) 233-3123
(574) 233-3125 (Fax)
(574) 233-3125 (Fax)
Professional information
Speed Measurement System With Means For Calculating The Exact Time Period Of A Known Quantity Of Speed Pulses
US Patent:
4434470, Feb 28, 1984
Filed:
Feb 9, 1981
Appl. No.:
6/232615
Inventors:
Robert C. Thomas - South Bend IN
John A. Hornbuckle - South Bend IN
Richard J. Fatka - South Bend IN
John A. Hornbuckle - South Bend IN
Richard J. Fatka - South Bend IN
Assignee:
The Bendix Corporation - Southfield MI
International Classification:
G01P 3481, G01B 714, G06F 1520
US Classification:
364565
Abstract:
A digital speed measurement circuit for an engine includes a magnetic pick-up positioned adjacent an engine-driven gear having a substantial number of teeth so that the pick-up produces a number of speed pulses per revolution of the gear. These pulses are shaped into square waves by a signal conditioning circuit and connected through a synchronizing circuit which responds to the trailing edge of each square wave to produce a triggering pulse, with each triggering pulse supplied to a tooth counter. A high speed clock is connected to a second counter which is reset with each triggering pulse. Sampling pulses are produced in an associated control system which is not coordinated with the speed pulse but which are longer in duration than any of the speed pulses and which control the flow of tooth counts to the tooth counter. Memory circuits retain the high speed counts measuring the intervals between a triggering pulse and the beginning of a sampling pulse and between the end of the sampling pulse and the triggering pulse immediately preceding. Another counter counts the high speed counts occurring during the sampling pulse period.