Patent ID: 8723697

Claim:
A device for automobile safety, comprising an RF antenna (JP 1 ), an RFID module, a GSM unit, a data processing unit (U 1 ), a control unit (U 2 ) and automobile circuits, wherein, (i) the RF antenna (JP 1 ) provides power to the RFID module in a wireless manner, and meanwhile receives an analog signal from the RFID module, and transmits the received analog signal to the data processing unit (U 1 ) through a voltage drop circuit; (ii) the data processing unit (U 1 ) is connected with the control unit (U 2 ) via a communication circuit, after receiving the analog signal input from the RF antenna (JP 1 ), the data processing unit (U 1 ) is subjected to filtration and converts the analog signal into a digital serial signal to be transmitted to the control unit (U 2 ) via the communication circuit, and the control unit (U 2 ) controls the status of the data processing unit (U 1 ) through the communication circuit; (iii) the control unit (U 2 ) is connected with a first relay (RL 1 ) and a second relay (RL 2 ) respectively through a first drive circuit and a second drive circuit, after receiving the digital serial signal sent by the digital processing unit (U 1 ), the control unit (U 2 ) obtains the identity information by a decoding process and then compares said identity information with the identity information pre-stored in the control unit (U 2 ), if said two are identical, the identity shall be regarded as legal, the control unit (U 2 ) controls the first relay (RL 1 ) to be closed via the first drive circuit; if said two are different, the identity shall be regarded as illegal, and the control unit (U 2 ) controls the first relay (RL 1 ) to be opened via the first drive circuit; (iv) the GSM unit is adapted to process a GSM signal, the GSM unit exchanges data with the control unit (U 2 ) in a serial communication mode; the user sends an anti-theft state activation or release instruction, in the form of a short message, to the GSM unit through a service center, after receiving the instruction, the GSM unit transmits in the serial communication mode the instruction to the control unit (U 2 ) for resolving the instruction received, if it is an anti-theft state activation instruction, then the control unit (U 2 ) controls the second relay (RL 2 ) to be opened through the second drive circuit; if it is an anti-theft state release instruction, the control unit (U 2 ) controls the second relay (RL 2 ) to be closed through the second drive circuit; and (v) the automobile circuits are connected in series with the relays (RL 1 , RL 2 ), and the automobile is only normally started when both relays are closed.