Research And Implementation On GSM/GPS-Based Embedded Vehicle Alarm System

With the economic development, the vehicle market grows steadily and the number of private vehicles keeps increasing. But in the meantime the theft of vehicles, which becomes a world wide public hazard, makes people suffer from tremendous economic loss. In foreign countries, the vehicle alarm system upgrades from the original mechanical mode to the latest GSM/GPS-based network mode after several generations. But in China, considering the price and technology, the common electronic vehicle alarm equipments are still the dominant ones.In view of the deficiencies of most common vehicle alarm equipments prevalent in the market, such as single alarm ability, low security and lack of tracking and monitoring ability, a vehicle alarm system based on GSM communication platform and GPS is studied and implemented in this paper.Integrating the traditional vehicle alarm technology and GSM/GPS technology and according to the designing principles of embedded system, the system builds up a mutual platform among the vehicle owner, the monitor center and the vehicle by using the vehicle monitor and control protocol based on GSM short message and Internet. Vehicle owners and the monitor center can monitor the state of the vehicle and send controlling instructions by means of SMS and Internet. At the same time, the vehicle can gain geographical information through GPS module so as to realize all-directional vehicle alarm and monitor.Different from other network vehicle alarm systems in the market, the system can refit some common vehicle alarm equipments, which have been already fixed on the vehicles, into network vehicle alarm systems. Consequently, the expense of the user can be greatly reduced and the performance-price ratio of the product increased. Moreover, most of the network alarm systems in the market are made by integrating a high main frequency embedded CPU and an embedded WinCE or Linux operating system, but this system achieves a construction of embedded network alarm system by integrating a lower hardware scheme circumstance with a self-developed application platform.