Automobile deceleration indicating device

Details Automobile deceleration indicating device Automobile deceleration indicating device

1997-01-24

1998-12-01

Wu, Daniel J.

Communications: electrical

Land vehicle alarms or indicators

External alarm or indicator of movement

340441, 340464, 340466, 340479, 324166, 324174, B60Q 150

Patent

active

058444769

ABSTRACT:
An automobile deceleration indicating device includes a signal generation unit which is coupled to the engine system for generating a signal of which the frequency is in general proportional to the operation speed of the engine, an amplifying circuit for amplifying the signal from the signal generation unit, a shaping circuit for generating a series of pulses from the amplified signal so that the frequency of the pulses representing the operation speed of the engine, and a micro-processor based circuit which receives the pulses and applies a control signal to the stoplight via power amplification circuit when the frequency of the pulses is decreased which indicates that the engine is slowed down.

REFERENCES:
patent: 3601794 (1971-08-01), Blomenkamp
patent: 4264905 (1981-04-01), Shapiro
patent: 4305072 (1981-12-01), Makita
patent: 4853575 (1989-08-01), Lessig, III
patent: 5148147 (1992-09-01), Kobres
patent: 5589817 (1996-12-01), Furness

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