摘要
以80C196为核心的手持式FFT分析仪，对复数范围内1024点进行浮点快速博里叶变换，从而得到被测信号的频谱图，通过分析处理频谱图的特征，诊断出被测对象的工作状态。同时，将其进行微型化设计，并应用于对机车涡轮增压转速的间接测量，无需拆装外壳，取得了良好的效果。
This paper introduces a hand-hold FFT analyzer, its core is 80C196KB microprocessor. By use of floating-point Fast Forurier Transfer of 1024 points in complex numberfield,it can get the spectral plot of detected signal. By analyzing and processing the character ofspectral plot. we can diagnose the active state of the detected object. At the same time,we microminiaturize the device and apply it to measure the rotational speed of locomotive turbocharger. The speed can be measured convenietly with gdri effect and need not of departing the shellof the turbocharger.
出处
《电子测量与仪器学报》
CSCD
1998年第3期70-74,共5页
Journal of Electronic Measurement and Instrumentation
关键词
FFT
涡轮增压器
转带测量
柴油机
Fast Fourier Transfer
Hand-hold instrument
Turbocharger
Measurement of rotational speed
