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US 4,395,624 AGranted
Moving vehicle monitoring system
AssigneeFleet Tech, Inc.
InventorHeinz Wartski
Life of this patent
Estimating the term…
Abstract
A system for and a method of recording information concerning vehicle operation comprising a logic circuit interfacing with a microprocessor whereby accurate velocity information can be recorded to provide a precise record of operation, including acceleration and deceleration information, over a period of time.
Claims17
A system for recording data concerning machine operation, comprising:
- a sensing means for generating machine pulses the number of which per a pre-selected timing period is related to the machine parameter or parameters to be measured,
- selecting means for choosing a number of quanta, each selected quantum corresponding to a different pre-selected operational level or range of the machine, and at least some of which quanta corresponding to more than one number of machine pulses per said timing period,
- means for counting the machine pulses for said pre-selected timing period and selecting the actual quantum into which the number of counted pulses falls,
- means for comparing the actual quantum with some previous quantum or quanta, and
- means for recording the actual quantum if the comparison of the actual quantum with the previous quantum or quanta indicates a non-uniform change in the machine parameter.
2 more elements
A method of recording information concerning machine operation comprising:
- generating a series of pulses, the number of which per pre-selected timing period is related to the machine parameter or parameters to be measured,
- selecting a number of quanta, each selected quantum corresponding to a different pre-selected operational level or range of the machine and at least some of which quanta corresponding to more than one number of machine pulses per said timing period,
- counting the series of pulses received in said pre-selected timing period,
- selecting the actual quantum into which the number of counted pulses falls,
- comparing the actual quantum with some previous quantum or quanta, and
- recording the actual quantum if the comparison of the actual quantum with the previous quanta or quantum indicates a non-uniform change in the machine parameter.
3 more elements
Dependencies are inferred from the claim text.