基于MC9S12DT128单片机多路频率量测量模块的设计与实现  

Design and Implementation of MC9S12DT128 Microcontroller Based on Multi-channel Frequency Measurement Module

作　　者：罗莉琴[1] 万丽[1] 李远哲[1] 刘慧丰 贺海文 

机构地区：[1]北京特种车辆研究所,北京100072

出　　处：《计算机测量与控制》2015年第10期3458-3460,3464,共4页Computer Measurement &Control

摘　　要：针对野外环境下装甲车辆转速等频率量的车载测试需求,通过对比分析几种常用频率测量方法（测频法、测周法和多周期同步法）的测量原理和测量误差,提供了一种基于MC9S12DT128单片机的多路频率测量模块设计方案,文中给出了通过软件方法实现多周期同步法的原理和具体编程方法;实际应用表明,该模块可并行测量8路0~10 kHz的频率量,测量精度高、量程宽、电路结构简单,环境适应能力强,可满足装甲车辆野外试验需要。Aimed at on hoard frequency test requirements such as armored vehicle velocity in the wild field, by analyzing the theory and error of several frequency measurement methods, a project for multi--channel frequency measurement module was proposed which is based on MC9S12DT128 microcontroller. The theory and realization based on a software programming method of synchronous multicycle measurement was work out. The application results show that the module can test isoehronously eight frequencies within the range of 0--10kHz. the measurement is precision and wide--range, the circuit framework is compact and the acclimatization is very high. So the measurement module can adapt to the armored vehicle field test.

关 键 词：计算机应用 单片机 频率 测量 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]