G - Physics – 01 – P
Patent
G - Physics
01
P
354/18
G01P 3/48 (2006.01) G01D 1/16 (2006.01) G01D 5/244 (2006.01) G07C 3/10 (2006.01) G07C 5/08 (2006.01)
Patent
CA 1200900
ABSTRACT OF THE DISCLOSURE 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. A transducer attached to a vehicle's transmission produces a number of pulses per second, proportional to vehicle speed. The number of pulses per second is counted and quantized by a microprocessor into one of sixteen pre-selected speed ranges or velocity quantums. A number of tests are then performed involving a comparison of the latest range with the immediately preceding ones, and based on this comparison, a decision is automatically made to record or not record the latest range. Depending on the relationship of the range with the previous ones, the data may be compressed with the previously recorded data. The results are stored in a memory and can later be called up and printed out. Because of non-recording of repetitive information, and compression, a long, continuous recording may be stored in a relatively small memory with sufficient accuracy to preserve changes of speed data for acceleration and deceleration information.
416627
Fleet Tech Inc.
Smart & Biggar
LandOfFree
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