Design And Implementation Of Electronic Circuit Remote Experiment Platform

The electronic circuit experiment is one of the most important laboratory courses for students in electronics and information related disciplines.When students cannot go to the laboratory to carry out experimental classes during the epidemic,they can only do some simulation experiments.However,simulation experiments are more idealised,and problems such as interference,noise and component errors that may occur in actual circuit experiments are difficult to reflect in simulation experiments.In order to enable students to better analyse and understand circuits,the electronic circuits laboratory course must be based on actual circuits.In addition,with the increase in the number of students,many colleges and universities have the problem of shortage of experimental resources,while the traditional experimental instruments and experimental boxes are large,expensive,scattered,and inconvenient,which brings certain difficulties to the experimental teaching of electronic circuits.In response to the problem that traditional experimental equipment and simulation experiments cannot well meet students’ electronic circuit experimental teaching,and the limitations of existing remote experimental equipment with low integration,single function and high cost,this thesis proposes a remote experimental platform for electronic circuits based on actual circuits.It realises the integration and remote control of commonly used experimental instruments and experimental circuits for electronic circuit experiments,and is designed with low cost,neat and beautiful interface and easy operation.The main works of this thesis are as follows:(1)An electronic circuit comprehensive experiment instrument which integrates DC voltage stabilizing power supply,signal generator,oscilloscope,and the digital multimeter is designed based on LabVIEW,FPGA,and the functional circuits of the experiment instruments.The comprehensive experiment instrument covers four commonly used experiment instruments in electronic circuit experiments,and can be remotely operated by using the client-side of computer software of the electronic circuit remote experiment platform designed and implemented.Compared with traditional instruments,the comprehensive experiment instrument has the advantages of small size,high integration,low cost,and convenient operation.(2)Seven remotely operable electronic circuit experiments were designed based on LabVIEW,STM32 MCU,and experiment circuit.A large number of adjustable components such as relays and digital rheostats were placed in the experiment circuit,students can remotely change the connection state of the actual circuit,and remote adjust the parameters of the actual circuit by the client-side of computer software of the electronic circuit remote experiment platform designed and implemented.The experimental results can be sent to the computer software in real-time.The results show that the electronic circuit comprehensive experiment instrument has the advantages of low-frequency signal accuracy and remote operation.The experimental results of seven remote experiments are consistent with the traditional experiment box.The interface of the experimental circuit is neat and beautiful,and the operation is convenient.