In today\'s domestic industry, the measurement of dimensions is mostly carried out by backward contact methods such as micrometers, which are not only inefficient but also inaccurate. This paper discusses the very effective non-contact detection technology of linear array CCD for dimension measurement. This measurement system is composed of chips such as 89C2051, TCD1206UD and ICL7135, and completes the processes from lighting, imaging, data processing to display. This design is stable and reliable, with high measurement accuracy, and is suitable for various high-sensitivity and high-precision detection. In addition, this system includes an LED display, which is not only cheap, but also convenient and visible for measurement results, increasing the practicality of this design.
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