为提高颗粒转速测量范围，提出了双帧频拍摄法，并进行了数学推导和实验验证。
To enlarge measurement range of particle rotational speed, a dual- frequency imaging method was presented, with mathematical analysis and proving experiment.
实验测量了在设计转速下该风机全工作范围的性能参数。
The performance parameters at the design speed are measured in the experiments.
实验结果表明，采用巨磁阻传感器的转速测量系统具有准确度高、测量范围宽、测量间距大等优点。
The experiment result shows that the measuring system with GMR sensor has the advantage of high accuracy, wide measurement range, and distant measurement.
针对工程中高速宽范围转速测量需求，提出了一种基于磁阻传感器的宽量程转速测量方法。
In order to measure the wide range rotation speed in engineering, a kind of rotation speed measurement method based on magnetoresistive sensor is proposed and the circuit is designed.
该测速仪具有硬件电路简单，测速范围、测量精度及分辨力均高于目前转速表等优点。
The tachometer so designed and developed excels in its simple hardware circuit, wide range tachometric survey, high rate accuracy, and high resolution power as compared with conventional tachometers.
对于纺织行业，我们的传感器可以测量化纤机械的高速卷绕头的旋转速度，频率范围最低为0hz。
In textile industry, We detect the speed of the high spinning rotors of the chemical fiber textile machinery. We also detect 0hz frequency.
对于纺织行业，我们的传感器可以测量化纤机械的高速卷绕头的旋转速度，频率范围最低为0hz。
In textile industry, We detect the speed of the high spinning rotors of the chemical fiber textile machinery. We also detect 0hz frequency.
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