With the quick development of China's automobile manufacture, numerous families have their own personal cars, but the number of the garage namely distant short of absences, accordingly, how forcible in preventing automobile theft is the owners are most cared almost. In recent annuals, the rapid development of science and technology, combined with current technologies, current automotive anti-theft devices have emerged. Function of the system due to the current conveyance is gradually improved, increased, the use of SCM control has become increasingly incapable apt meet the claim. Therefore,
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this paper,
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1 system system consists of hardware
ARM embedded controllers, mobile module, wireless remote control module, vehicle control and status revelation module 4 chapters. Vehicle control and condition monitoring data gain module to the vehicle master embedded ARM, ARM embedded master and then pass on their mobile phone module and wireless remote control module, the ultimate aim to achieve the bell. System shown in Figure 1.
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1.1
If auto theft were the control circuit to begin the car later the abnormal vibration, vibration sensor will be of low effective marking to pass LPC2210, LPC2210 and then spread this message; a pass alarm circuit, and the other passed to TC35. Mainly at the alarm circuit blocks, composed of speakers and electronic switch SCR. Transistor or composite pipe which is constantly used to cultivate the power and the circuit measures, he formed a very effective current exaggeration transistors, the aggregate magnification is the product of 2 tube amplification. SCR SCR is composed of electronic switches, capacitors and resistors money and filters, to the IC to cater +3 ~ +4 V voltage; IC integrated circuits as the alarm simulates the sound, the alarm from the SCR control, theft Once the car by the wrong password, the bandit,
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1.2 Power Interface Design
GSM module working voltage of 3.3 ~ 5 V, while the web linkage is initiated the process of land migrate requirements of power supply 2 A tip current, and voltage drop is not greater than 400 mV, so the module power afford design must entirely take into account the voltage may drop. Must assure that the minimum voltage above 3 V, In appending, the data displacement process, voltage fluctuations tin not be greater than 400 mV, otherwise,
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