The Design And Application Research Of Audio And Video Acquisition System Based On S3C2440

This paper put the wildlife conservat ion as research background, des igned asound and the video acquis ition syste m based on S3C2440.Using the pass iveinfrared sensor method to detect wild anima ls and poachers in the natura l protectionzone, it can photograph, videotape and send pictures to users’ mobile phone orma ilbox thro ugh the GPRS network to arouse their caution.App licatio n of Linuxoperating s ystem, e mbedded S3C2440A high performance ARM9microprocessor,guarantee the stability of the monitor.Aim at wild life habitat (fie ld, more interfere nce, power supply is not stable,etc.) to do the detailed analys is, determine the overa ll functiona l fra mework of thesystem. From aspect of hardware, the solar cell and battery seamless switc hing circ uitdesign to ensure stab le power supply; DC motor drive control circ uit filter comb inedwith infrared LED la mp, to acco mmodate the needs of the who le day workenvironme nt;LHI968infrared sensor and PIC16F684MCU micro-system he lp toimprove anti-interference ab ility a nd the sensor sensitivity adjustable; images andvoice mining module c ircuit design, on-site aud io and video data acquis ition.The software first e laborated the method of build ing ARM embedded crossdeve lopme nt platform and Linux device driver fra mework; then introduce the quantity,and the wa iting que ue mechanis m, optimize the syste m resource sched uling, focus ingon the design and imple me ntation of driver OV9650image sensor, UDA1341TS audioprocessor in the Linux s ystem, provides the interface for the origina l sound, graphdata for aud io and video processing software system applicatio n la yer; fina l ly designand software flow chart of the syste m application layer.The design takes account of the environme nt and cost, it can provide a propermonitoring platform for each nature reserve and wild anima l breeding model base,Have a certain econo mic value and practica l va lue.