作者：王东锋, 张爽, 孔立堵
作者单位：空军第一航空学院, 河南信阳 464000
关键词：脉冲涡流检测; 脉冲发生器; 调频; A/D转换; 单片机
摘要：
针对脉冲涡流检测的需要,设计了可调频的脉冲信号发生器。以简单、可调的比较电压发生电路为控制源,先将比较电压经A741放大后送入ADC0832进行A/D转换,再将所得的数字信号送入单片机AT89S51,在单片机软件控制下输出一定频率的脉冲信号。硬件设计省去了传统的调频电路,简化了结构;软件设计采用中断控制A/D转换,避免了数据的重复采集。Proteus仿真结果表明,系统设计正确,运行可靠。
Design and emulation of pulse signal source based on proteus
WANG Dong-feng, ZHANG Shuang, KONG Li-du
The First Aeronautic Institute of Air Force, Xinyang 464000, China
Abstract: For the demand of pulse whirl-pool testing, the pulse signal source of frequency modulation was designed.Simple and adjustable comparable voltage generator was used as control source.The voltage was amplified by μA741 and was put into ADC0832 to conduct A/D conversion.Then, the digital signal was transmitted into single chip AT89S51.Under the control of single chip's software, the pulse signal of certain frequency was output.As for design of hardware, the conventional frequency modulation circuit was omitted.In the design of software, interruption control was used to avoid repeated data collection.The Proteus emulation results show that this design is well and the system work reliably.
Keywords: Pulse whirl-pool testing; Pulse signal source; Frequency modulation; A/D change; Single chip
2009, 35(5): 102-104 收稿日期: 2008-11-12;收到修改稿日期: 2009-1-19
基金项目: 武器装备军内科研项目(KJ08210)
作者简介: 王东锋(1974-),男,河南孟津人,讲师,硕士,主要从事航空装备维修的教学与研究工作。
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