Research On Planning For The Logistics And Supply Policies Of The Franchised Grid-Manufacturing System For Mould And Die Industry

Characteristic symbol testing technology as an important embranchment of photoelectric technology, has been applied widely in print packaging, encapsulation incising and controlling, object and distance's testing, etc. It has great significance for increasing product's quality, protecting merchandise, prettifying merchandise and higher efficiency by lower power. Along with technology's advancement and application requirement's increasing, traditional photoelectric testing method couldn't meet the need. Therefore, research on characteristic symbol photoelectric testing technology and its application possess certain subject's margin and comprehensive market outlook.This thesis focuses on the characteristic symbol testing technology's research, especially the linear CCD and photoelectric sensing technology's research. On the base of wide and in-depth theoretic study, simulation and experiment of them, the intelligence detect method of linear CCD is discussed and theoretic research about the application of intelligence detect has done. At the same time, an Automatic Gain Control and floating threshold setting intelligent detecting and processing method based on linear CCD is proposed, and the disposal and transform of CCD video signal carried out by hardware and software. The desgigned circuit includes amplifier-filter circuit, AGC circuit and floating threshold setting circuit mainly. Besides, a new photoelectric sensor used for characteristic symbol testing based on high speed microcomputer C8051F023 has been implemented. Lastly, a good deal of experiment have been done and their data indicates that this sensor has lots of good feature, such as simple circuit, small cubage, good anti-jamming and have two analog output and one digital output. It has possess wider measure range and higher accuracy, can meet the position testing demand for diversiform characteristic symbol, especially for typographical mark. It can meet the increasing request in the industrial displacement control situation. Results verify the effectiveness and utility of the intelligence detect method.