| To encourage the development of educational technology,using modern Internet of Things,the Internet and communication technologies have always been one of the hot spots for researchers in the field of educational technology.In engineering experiment teaching,student are affected by time and space,and the laboratory equipment is difficult to manage.In order to improve the teaching mode of traditional electronic and electrical experiments,improve the quality of teaching.This thesis designs a remote operation experiment platform,in addition I realizes the analog circuit and microcomputer principle course on this platform.This system combines the cutting-edge technology of electronic and communication technology that fully achieves the purpose of "technical service to teaching".This thesis designs using modular idea and abstracts the remote operation experiment platform into three ends,the experimental end,the equipment end and the server end.In addition,B/S architecture involves in the design to makes for good expandability and maintainability.Among these three ends,the design of the equipment end includes program-controlled power,simple signal waveform generator,oscilloscope and gateway board.The gateway board integrates embedded web server,wireless network serial port and video observation system.The server end consists of design of a number of analog circuit classic circuit experiment web pages,ARM experiment web page,user management and lab management module.The design of the server adopts the development mode of separation of front and rear ends,realizes multiple experimental pages with good experience,and initially realizes the experimental system of paperless classroom.An unattended analog op amp circuit,which can remotely change the circuit structure and key component parameters,along with an ARM micro-controller bench that can remotely download the program at the experimental end are designed.This experimental platform designed in this paper can open and share the resources of the laboratory,so that students can enter the paperless classroom to start experimental learning anytime and anywhere.The main work and innovations of this thesis are as follows:(1)The remote operation experiment platform is abstracted into the experimental end,the device end and the server end,and designed separately based on the idea of modularization.(2)The remote operation experiment platform system designed with B/S architecture.The application web page supports the control from mobile phone and PC,which is easy to operate and promote,as well as that the client barely need any maintenance.(3)Design a wireless network to serial port service by using NodeJs technology,which bridges multiple network communication links,and solves the problem of experimental network access difficulties and network inconvenient management.(4)Design six classic op amp experimental circuits by using an array of single op amp and relay,which can change the circuit structure and key component parameters.In addition,the code editing compiler and firmware update function are integrated together on the remote MCU experiment web page as a whole. |
