TDC-GP2在磁致伸缩传感器中的应用  

Application of TDC-GP2 in Magnetostrictive Sensor

作　　者：高涛[1] 朱蕴璞[1] 吴蕊[1] 周国祥[1] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《自动化仪表》2010年第12期68-71,共4页Process Automation Instrumentation

摘　　要：为了解决在磁致伸缩传感器中时差测量模块精度不高的问题,系统采用高档8位单片机ATmega128控制高精度时间测量芯片TDC-GP2,实现了脉冲时差的精确测量。详细介绍了TDC-GP2在磁致伸缩传感器应用中的软硬件设计,给出了硬件电路原理图、软件流程图及关键代码,并对设计中的注意事项进行了说明。同时,软件采用数字滤波消除了随机干扰和脉冲干扰。该方案有效地实现了时差测量模块对前端信号的精确测量。To solve the low accuracy problem of time difference measuring module in magnetostrictive sensor,by using high grade single chip computer ATmega128 to control high precise time measurement chip TDC-DP2,the accurate measurement of pulse time difference is implemented.The design of hardware and software of applying TDC-DP2 in magnetostrictive sensor is introduced in detail,the principle schematic of hardware circuit,software flowchart,and key coding are given;and the cautions to be noted in the design are described.In the software,by adopting digital filtering,random and pulse interference are eliminated.The strategy effectively implements precise measurement for the front end signal with time difference measuring module.

关 键 词：单片机 传感器 时间测量 数字滤波 液位测量 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]