Patent ID: 8054200
Filing Date: 2011-11-08
Classification: G08G

Abstract:
1. A control apparatus comprising: a) a light sensor; b) a warning device; c) a microcontroller connected between the light sensor and the warning device and comprising an algorithm for analyzing outputs of the light sensor, wherein the algorithm controls operation of the warning device; d) a signal conditioner connected between the sensor and the microcontroller, wherein an output of the signal conditioner includes a first in time digital pulse and a consecutive second in time digital pulse; e) wherein the microcontroller includes a timer, wherein the microcontroller includes specifications for A) a required interval defined by a required time between said first in time digital pulse and said second in time digital pulse, B) a required number of consecutive digital pulses that have fallen into said required interval; and f) wherein the microcontroller includes an algorithm having variables that comprise: