MSP430F149在IRIG-B码解码中的应用  

Application of MSP430F149 in IRIG-B Code Demodulator

作　　者：佟刚[1] 崔明[1] 曹永刚 马鸿艳 陈涛 

机构地区：[1]长春光学精密机械与物理研究所吉林 [2]山东沂水县杨庄一中,山东沂水276412

出　　处：《计算机测量与控制》2007年第11期1597-1598,1610,共3页Computer Measurement &Control

摘　　要：MSP430系列单片机是一种16位的单片机,具有集成度高、超低功耗等优点;MSP430F149的ADC12模块支持快速的12位A/D转换,并带有采样保持电路,具有内部参考电压发生器,将其应用在IRIG-B码(AC码)的解调中,IRIG-B码是标准时间码格式之一,广泛地应用于靶场时间信息的传递和各系统的时间同步;详细介绍了自动增益电路和解码电路的硬件设计和IRIG-B码数字解调技术的原理及方法;MSP430的软件采用C语言编写,使程序有很强的可移植性;结果表明,该系统运行稳定,同步精度高,具有较强的抗干扰能力和实际应用价值。The MSP430 incorporates a 16-bit RISC CPU, peripherals, a flexible clock system and ultralow-power. The ADC12 mod uleof MSP430F149 supports fast, 12-bit analog-to-digital conversions, sample select control and reference generator, can be used in the IRIG-B code demodulator. IRIG-B code is one of the standard time code format , used for time information transfer and time synchronization between different ranges in the shooting range system. The theory and method of digital demodulating technique are presented particularly. C language is adopted to carry out software design, which makes program much transplantable. The results demonstrate that the system runs steadily, possesses high synchronization precision and better anti-interference.

关 键 词：MSP430 A/D转换 IRIG—B码 时间码 

分 类 号：TP368[自动化与计算机技术—计算机系统结构]