Automatic electronic alarm system for cars. (Machine-translation by Google Translate, not legally binding)

摘要

Automatic electronic alarm system for cars, characterized by being composed of five stages, of which the first contains a timer circuit and a relay interlock, having as a mission to prevent the operation of the alarm from the moment in which the contact of the car disconnects a pre-established time interval sufficient for the driver to leave the vehicle, acting by loading and unloading capacitors; the second stage contains the information sensors of the opening of the bonnet doors and other elements on which the operation of the alarm is established, and a portrait and warning circuit of the alarm, the delay time being sufficient for the legitimate user can open the door and connect the contact without sounding the alarm, which sounds also immobilizes the engine start and start system; the third stage is composed of a timer in charge of the alarm sounding during fixed and sufficient intervals, with intercalation of small fixed pauses; the fourth stage is constituted by a stable multivibrator that causes the physical operation of the alarm signal, sound or light or of any other nature, to be intermittent, that is, of small touches, successive flashes, or the like; finally, the fifth stage is a circuit that integrates a relay and its mission is to disable the starting and ignition systems in the event that the fourth stage is activated, there being a complementary switch in a hidden place of the vehicle, which must be disconnected and reconnected so that the mechanisms made inoperable by the operation of the alarm can function again. (Machine-translation by Google Translate, not legally binding)