The Design And Implementation Of Security System In Smart House Based On BACnet

With the development of intelligent building and the improvement of standard of living, the requirements for the security system in the intelligent building are increasing. However, in the security system of most smart houses, problems in the integration of alarm devices and in the communicating mutually among the alarm devices remain unresolved. As an open and ISO standard data communication protocol for building device, BACnet protocol supplies the mutually communicating mechanism for different devices and systems. It is practical to introduce the BACnet protocol into the security system in smart house, with optimistic market forecast. Firstly, this paper introduces the development of security system in smart house and analyzes the disadvantages of current security systems. On such bases, we analyze the feasibility of the security system based on BACnet in detail, combining the characteristic of BACnet. Then, we give the model of this system and describe its working theory. Then this paper designs a security system according to the system model, gives the framework of this system and analyses each part of this system. The system is open and scalable. After that, aiming the requirements for BACnet protocol stack in the system and other BACnet system, this paper designs BACnet protocol stack for Linux and describes the implementation in detail. It can offer the friendly interface for the third developer, which can improve the developing efficiency for them. Later, we test this system. The test result indicates that this system has achieved the goal of design and satisfied the people's requirement. Finally, this paper summarizes the work of this paper and analyses the limitation of this system and gives some specific advice, which paves well the way for the next development and realization of the security system in smart house based on BACnet.