Design And Realization Of Multifunctional Intelligent Experimental Testing Instruments Based On AT89C51

Physics and electronics experimental teaching takes an important part in higher engineering education.However, for a long past time the fallen behind teaching experimental equipment restricted the improvement of teaching quality of physics and electronics to certain extent. Aiming on the need of physics and electronics teaching, basing on AT89C51 SCM designing the presentation finished a multifunctional experiment instruments, emulated debugging and compared test.The main research in the presentation:Analyzed the configuration and principle of AT89C51 chip, designed the extended system of AT89C51 combining the timer and counter 8253 to the programmable collateral interface 8255;Brought forward total design of multifunctional intelligent experimental instruments on the basic of the lack of modern experimental equipment, including the composing, principle and implement method of system hardware;Programmed the applied software in assembly language;Communicated with PC adopting RS232C standard interface on basic of analyzing the theory of communicate interface;System emulated debugging adopting DVCC-51 developer with system software and hardware.The main productions of the presentation is applying AT89C51 chip to multifunctional intelligent experimental instruments , making experimental instruments have synthetical testing function, and improving precision and stability, can replace many existing experimental instruments such as millisecond counter, a frequency measurement meter, and function generator and so on, enhances efficiency and quality of experimental teaching. At the same time, it can response instruction from microcomputer serial interfaces, send measured data to PC, then PC supply every Stat excels to users through printer or monitor at any moment. Experimental instruments can be applied alone, and can be a node, strengthen the flexibility of the performance of experimental instruments.The presentation has the multifunctional intelligent experimental instruments system emulated debug, and compares the performance with existing common-use experimental instruments. The multifunctional intelligent experimental instruments designed in the presentation has outstanding advantages , can replace many experimental instruments at present, can finish the task of experiment and teaching excellently.