基于FPGA的转速光电传感测量系统
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A rotational velocity optic-electro sensor measuring systems based on FPGA
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    摘要:

    利用光电式测量的抗干扰性好、反应快、灵敏度高、精度高、可测范围宽的优点,对高速转轴的转速进行更精准的测量。激光器将转轴的转速参数转换成周期性的光信号,然后高速硅光电二极管将接收的光信号转换为电流信号,经模拟电路处理得到数字电压脉冲信号,再利用基于FPGA数字移相技术的高精度脉宽测量方法对数字电压脉冲信号进行测量,处理后最终得到转速的精确结果并显示在液晶屏幕上。试验结果表明,测量结果准确度高,稳定性好,适用于一般的高速测量场合。

    Abstract:

    Because of good anti-interference , quick reaction, high sensitivity , high accuracy and wide range of photoelectric measurements , it can be used to high-speed shaft rotational velocity for more accurate measurements. Laser can convert the rotational velocity parameter of the shaft into periodic optical signals , high-speed silicon photodiode receives the optical signals and converted them into current signals , as current signals pass through analog circuitry , there output the digital voltage pulse signal , then FPGA-based high-precision digital phase-shifting measurement method is put to measure pulse-width of the digital voltage pulse signals , finally , accurate results are displayed on lcd . The results showed the high accuracy and good stability of measurement, and it is applicable to general high-speed measurement occasions.

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何必威,马国欣. 基于FPGA的转速光电传感测量系统[J]. 科学技术与工程, 2010, (13): .
hebiwei, Ma Guoxin. A rotational velocity optic-electro sensor measuring systems based on FPGA[J]. Science Technology and Engineering,2010,(13).

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  • 收稿日期:2010-01-18
  • 最后修改日期:2010-02-03
  • 录用日期:2010-02-09
  • 在线发布日期: 2010-04-08
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