| The fire is among the most common disasters which endanger human lives and properties.Therefore,to early predict the fire condition,to report to the police and to prevent it in time is the tasks of alarm system.This subject designs a kind of fire alarm system,which adopts CAN bus technology and data fusion technology.It's utilized for medium and small-scale occasions.CAN field bus,with high-performance,high reliability and relatively wide applications,is considered to be one of the most influential buses.After introducing the situation of fire alarm technology,the paper gave a total program intelligent fire alarm system based on CAN bus and introduce the constitution,main functions and work process of the system.With field part based on the single intellectual junction of the CAN bus,this subject introduces the hardware circuit forming using C8051f040 as central CAN controller and the design method of communication software,and gives out some porcedure flow charts.By transmitting data of different ranges,we have verified the fast quality and accuracy of data transmission.Multisensor data fusion is a newly emerging technology in recent years,which utilizes various kinds of sensors information,draws the overall and correct understanding of the environment or target characteristic.Only processing"and-not"judges is equal to a simple combination of the multisensor,which can't make full use of the function of multisensor.Multisensor data fusion is the very technology,which CAN make full use of the function of multisensor.It utilizes various kinds of sensors information to draw the overall and correct understanding of the environment or target characteristicsThis paper proposes a kind of algorithm using data fusion technology in view of artificial intelligence.The analog input signals are provided by temperature,smoke,gas and ultrared light sensors,and then synthesized by neural network and fuzzy logic technology.The aim is to design a kind of quick,exact and valid fire detecting system, which CAN meet the requirements of earlier alarms and less misalarms.By comparing the results of the algorithm based on multisensor data fusion,the system CAN provide precise prediction of fire.The paper summed up the done work and the further research prospects. |
