Acute auditor prevision against the dream of the drivers (Machine-translation by Google Translate, not legally binding)

摘要

Provisory acoustic warning against drivers' sleep, characterized by its electrical circuit, consisting of two transistors, three resistors, two capacitors, two batteries, a loudspeaker and a switch, consisting of a clamp with spring tensioner, which tends to maintain separated their ends, provided with contact lamellae, to be held in the hand by the driver, while driving the wheel, and whose switch requires that the lamellae are in contact, overcoming the slight resistance of the distension spring, in which position contact the warning is mute, and that will start its loud and shrill sound, as soon as the driver overcome by drowsiness loosen the pressure of the hand and open the switch, all in fractions of a second, so that awake quickly returns to control the vehicle. (Machine-translation by Google Translate, not legally binding)