基于MSP430的莫尔斯报训练装置设计

Design of Morse Code Training Equipment Based on MSP430

为解决以往莫尔斯报训练装置使用不便、真实感差、识别率低等问题,设计一种基于MSP430单片机的新型装置,具有发报、听报训练功能,识别结果可由数码管实时显示或回送电脑,通过预处理电路消抖并产生反馈给操作者的监听音。对原有码识别算法加以改进,采用等距离判定法和递减的修正因子动态计算判定阈值,通过查表法识别码符号,实现了识别速度、准确性和适应性间的平衡。

In order to solve the problem of inconvenience of using,inauthentic and low recognition rate,a new equipement based on MSP430 is designed to fullfill telegraph sending and receiving training, the identification result is displayed by LED or transmitted to PC in real - time. The pretreament circuit eliminates the jitter and controlls monitoring sound fed back to operator. The recognition algorithm is improved by using equidistant judging and gradual reducing amendment factor to caculate threshold dynamically, looking- up the ROM table to encode symbol, as a result, equilibrium among identifying speed, accuracy and adaptability is realized.