The invention discloses a vehicle-mounted intelligent glass breakage anti-theft alarm device and a control method thereof. The on-off state of a vehicle engine is judged through an OBDII interface or service voltage. If the engine is turned off, a glass breakage detector is started. If the engine is turned on, the glass breakage detector is not started, so that false alarming caused by sounds of a radio and the like is avoided. When glass is smashed by a robber, sounds of special frequency can be generated. By means of a simple DSP/CPU, the glass breakage detector detects and analyzes sounds of glass breakage frequency by collecting peripheral sounds through an MIC and converting the peripheral sounds into digital signals through A/D. If the frequency range is within the glass breakage sound frequency band, a buzzer is started, or an alarm is given in a wireless communication manner. The state of the vehicle engine can be obtained more precisely, and anti-theft monitoring is carried out more precisely and sensitively according to the state of the engine.
Vehicle-mounted intelligent glass breakage anti-theft alarm device and control method thereof
2015-12-16
Patent
Electronic Resource
English
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
European Patent Office | 2015
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