Development Of Comprehensive Experimental Device Based On Multi-processor

With the rapid development of electronic information technology,universities should cultivate complex talents to adapt to social development.In addition to theoretical teaching,experimental teaching is also very important.The practical teaching link is an important platform for the students to gain the ability of engineering practice,the ability of theory to practice,the ability of analyzing and solving practical problems and the ability of innovation.In order to increase the experimental teaching to the professional courses,the students have a more comprehensive and clear overall knowledge of the information specialty,this study research and design a comprehensive experimental device based on multi-processor.The comprehensive experimental device proposed in this paper can not only serve the curriculum but also meet the demand of the application-oriented talents training.It can carry out the independent experiment of each module,and can carry on the comprehensive application experiment of each module,so that the students can understand the professional knowledge and skills.At the same time,have a better understanding of entire information professional.the design of integrated experimental device includes analog communication,digital communication,wired communication,wireless communication,point-to-point communication and network communication.each module can be tested separately or combined with each other,to achieve full-duplex voice signal Communication.The device includes the following six parts: voice signal conversion module,DSP-based signal collection and processing module,MCU control module,FPGA-based FM wireless voice communication module,ARM-based WiFi digital network communication module and LabVIEW-based GUI Module.The voice signal conversion module converts the acoustic signals into electrical signals,and then carries out AD sampling,filtering and DA transform through the DSP module,sends them to the FPGA module.And then by the FPGA control two FM stereo chips for voice signal transmission and reception.On the one hand,the MCU module receives frequency and other parameters via ARM transmission mode,then transferred them to FPGA and DSP.On the other hand,the system status information feedback to the computer and display through the LCD.TheARM module drives the WiFi chip to receive the operating mode and frequency information sent by the computer and transmits the received parameters to the MCU.At the same time,receives the working status information returned by the MCU and then sends it to the computer to complete the on-line monitoring.LabVIEW module receives the working parameters of user input,and sent to the ARM by WiFi,to achieve the control of the system operation mode.Experimental results show that the experimental device can be used for independent experiments of each module,but also can be used for the integrated application of the modules to achieve full-duplex communication of voice signals,online update of parameters,working status monitoring,instruction operation control and real-time display system working status.In this paper,the research background and current research situation of the comprehensive experimental equipment of information specialty are introduced.Secondly,the paper puts forward the system scheme.Then the schematic diagram,PCB design and software program design of each module are finished respectively.Finally,the system is tested to verify the system function,and completed the design goal.