| Along with China economic rising and technologic innovation , car ,the once luxury goods, now has entered common people's door. Vehicle security has became a major social problem when the using car brought us huge convenience. Current Vehicle security alarm devices commonly have limitation of false alarming and can't communicate the car owner effectively. Finger print as a kind of biologic characteristic can be used to identify one's identity uniquely. Embedded Fingerprint Recognition System use the fingerprint as the"key",can effectively lowing the false alarming rate and has the advantages of being convenient ,safe, reliable and available. Global System for Mobile communication(GSM) as the second generation of wireless communication network has the predominance in fields of coverage , signal stability ,blind area, ect, especially the Short Message Service(SMS), which adopt store—transmit communication model and does not need establishing link, has high reliability and low fee cost. The combination of the two'merit can solve the false alarming rate and car—owner communication problem, therefore its application has huge market potential.This dissertation finished the general design of the Vehicle Fingerprint Alarm System(VFAS), which based on Embedded Fingerprint Recognition System(EFRS) and combined with merits of GSM and SMS, specifically accomplished the design and realization of the alarm module in EFRS. Content of this dissertation is mainly about three parts including general scheme of the alarm system, hardware design of alarm module and the Single Chip Microprocessor(SCM) , software design of communication and controlling between GSM module and SCM. Considering development of new technology and requirement of the system realization with additional cost and performance factor, eventually we choose Siemens GSM module TC35i and Philips P89C58 SCM as the core of the alarm module. The major work this dissertation achieves includes:(1)Introduction of the GSM network, especially the working principle, component structure and the speciality of SMS, then we analyze the merit of adopting SMS for alarm;(2)Introduction of the composition of EFRS, specific type choice of GSM module and the general design of VFAS; (3)Accomplishing the design of peripheral circuit of the alarm module and finishing the drawing of Printed Circuit Board by using PROTEL 99;(4)After learning AT command and PDU coding in the relative parts of communication protocol GSM07.05 ,combining with SCM serial port communication ,we finished the software design and programming in the Keil uVersion2 integrated programming environment through real time on-line simulator TKS-668B.At last, author conducted relative hardware and software functional test on the PCB.Result of test show the alarm fuction works normally.This alarm module overcome the current vehicle alarm device'shortage,meanwhile has the advantage broad coverage,low cast,non-noise pollution,don't being restricted by location and wire-line,therefore has certain application meaning. |
