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首页> 外文会议>Instrumentation and Measurement Technology Conference (I2MTC), 2012 IEEE International >Self-mixing sensor for real-time measurement of harmonic and arbitrary displacements
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Self-mixing sensor for real-time measurement of harmonic and arbitrary displacements

机译：自混合传感器，用于谐波和任意位移的实时测量

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摘要

A real-time self-mixing laser displacement sensor is presented that uses a fast consecutive-samples based unwrapping algorithm. The processing is achieved at a rate of 125KHz by an integrated micro-converter (ADuC7020) embedded on the SM sensor. Arbitrary and harmonic displacements have been measured in real-time with λ /10 precision as compared with the reference built-in capacitive feedback sensor of the target, where λ is the laser wavelength. The algorithm does not require any parameter estimation or huge memory and corrects possible false fringe detections. This results in a compact, integrated, precise and self-aligned laser sensor that costs less than 40 $.
机译：提出了一种实时自混合激光位移传感器，该传感器使用基于快速连续样本的展开算法。通过嵌入在SM传感器中的集成微转换器（ADuC7020）以125KHz的速率实现处理。与目标的内置参考电容式反馈传感器（λ是激光波长）相比，已以λ/ 10精度实时测量了任意和谐波位移。该算法不需要任何参数估计或庞大的内存，并且可以纠正可能的错误边缘检测。这导致了紧凑，集成，精确和自对准的激光传感器，其成本不到40美元。

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