DEVICE FOR INDICATING UNAUTHORIZED ACTION ONTO CAR WINDOW GLASS Russian patent published in 2004 - IPC

FIELD: transport engineering; security systems.

SUBSTANCE: proposed device contains series-connected microphone, active high-frequency filter, low-frequency filter and microcontroller. It has also loudspeaker communication control unit with built-in Blue-tooth-unit wirelessly connected with similar Blue-tooth-unit built into cellular telephone set on car. Security system central control unit is connected to loudspeaker communication control unit and is coupled with User's telephone number storage unit. Loudspeaker communication control unit is coupled with call melody storage unit, User's telephone number storage unit and with oral messages storage unit connected to central control unit. Microcontroller includes series-connected analog-to-digital converter. Microprocessor unit and resolver whose output is connected with additional input of central control unit. The latter is made with possibility of selection of coded messages concerning degree of damage caused to window glass and activation of either warning or alarm zones of signaling in case of unauthorized action onto car window glass.

EFFECT: timely warning of car User.

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