Open communication principle experimental platform

An experimental platform and an open technology, applied in the field of experimental platforms, can solve problems such as knowledge disorder, frequency mismatch, lack of system and integrity, etc., and achieve the effects of enriching experimental content, improving utilization rate, and strong flexibility

Inactive Publication Date: 2011-07-20
NINGBO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The PAM and PCM modules here also have the problem of frequency mismatch with the subsequent transmission modules.
[0004] Due to the frequency mismatch between each unit experiment module, students lack understanding of the whole process of communication, and can only understand each knowledge point in a scattered manner. The knowledge they master is messy, lacking system and integrity

Method used

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Such as image 3 As shown, the CPLD programmable device EPM7064 13 is arranged on the signal frequency conversion module 8, and the CPLD programmable device EPM7064 13 has a total of 44 pins, including 32 general-purpose I / O port pins, and these I / O port pins are used as Multiple experimental module interfaces of CPLD programmable device EPM7064 13 are respectively connected to each experimental module, GAND10, GAND22, GAND30, GAND42 are ground pins, VCC3, VCC15, VCC23, VCC35 are power supply pins, IO / TDO38, IO / TDI7, IO / TCK32, and IO / TMS13 are corresponding test pins, and can also be used as general-purpose I / O port pins. The signal frequency conversion module 8 is provided with a crystal oscillator 11, which is used to generate a 16.384MHz system master clock. The crystal oscillator 11 is input to the CPLD programmable device EPM7064...

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Abstract

The invention discloses an open communication principle experimental platform, which comprises a plurality of communication principle experimental modules, a power supply and a signal frequency conversion module, wherein the signal frequency conversion module is provided with a crystal oscillator, a control signal interface and a complex programmable logic device (CPLD) EPM7064 of the ALTERA company; the control signal interface can be directly connected with a control computer, and can download a program code for realizing a signal frequency conversion function into the CPLD EPM7064 from thecontrol computer to perform frequency conversion on signals of the experimental modules at an input end to obtain frequency signals required by the experimental modules at an output end; and the signal frequency conversion module matches the frequency and code rates of each experimental module during a communication principle comprehensive experiment; and the CPLD is applied flexibly to change a conventional experimental teaching module, and help students to better master and digest components, operating principles and performance characteristics of a communication system.

Description

technical field [0001] The invention relates to an experiment platform, in particular to an open communication principle experiment platform. Background technique [0002] Communication Principles is a highly theoretical course with relatively abstract content. For this reason, an experimental course of Communication Principles is set up to help students understand the theoretical knowledge they have learned perceptually. At present, the basic composition of several communication principle experiment boxes provided in the domestic market is similar, and the structure is as follows: the experiment box is equipped with a number of detachable experimental modules, and these modules can be combined to form an independent unit experiment corresponding to the relevant theoretical knowledge points one by one. , such as PCM (Pulse Code Modulation) experiments, PAM (Pulse Amplitude Modulation) experiments, code conversion experiments, etc., in order to save manufacturing costs, the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/18
Inventor 陈潇缙杨燕沙吾提阿吉・乃比李卫红
Owner NINGBO UNIV
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