The Research And Application Of Embedded System In Pickproof Annunciator

Along with the improving of standard of living, people more and more attach importance to personal security and the security of property. The technologies of security are important means to protect the benefit and safety of state and people. In order to prevent the events of steal efficiently, we have to own the security system of ourselves. The security mode only by people can't meet our requirement again; the intelligent alarm system depending on new science and technology has been currently developmental trend.The arrival of after PC age make embedded technology becoming one important branch of computer technology. Comparing with universal computer system, embedded system is one kind of computer based on hardware design and software development, which have been widely applied to engineering controlling, industry manufacture, apparatus, communication and the field of consumed product. With the developing of people's requirement, the technologies of embedded system will be kept on using widely.This paper combines embedded system with pickproof annunciator depending on practice requirement and design one set of wireless pickproof annunciator. This annunciator is combined by three parts; they are detector, main machine and the terminal which receive alarm signal. The detector transfer alarm signal to main machine, after analyzation and disposal the alarm signal is transferred to the receiver by two means, one is wireless the other is telephone line.This paper describes embedded chip and embedded system firstly, then brings forward this paper's aim of reach and two key questions, which are transferring alarm signal by wireless means and reducing the rate of misinformation. In the following part this paper describes the research platform which contains hardware and software and the key components which used in main machine. In chapter four present some program such as software decoding, music playing, keyboard scanning and so on. In chapter five this paper gives the steps that tell us how to download the program to embedded chip and some watchful problem. At last present the function and characteristic of this alarm system and some instruction on how to use the alarm system correctly.In the process of research I have ordered all the diode, audion, resistance, capacitance, integrate circuit and so on, then designed the circuit diagram and the PCB (Printed Circuit Board). After assembling one set of alarm system and developing software, I debugged the hardware and software time after time. At last attain the expected aim and solved the two key questions namely transferring alarm signal by wireless means and reducing the rate of misinformation.