China developed low-cost time grid sensor
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At present, the measurement of time by human beings is far easier than the space measurement operation, and the cost is low, the precision is high, and it is not easily affected by factors such as temperature and gravity. However, it is necessary to achieve the same accuracy in time measurement as in space measurement. More fees. Professor Peng Donglin applied this time-measuring, low-cost and low-cost feature to space measurement and invented the time-gear sensor.
According to reports, the design idea of ​​the time-gear sensor is to first establish a "space-time coordinate conversion system", and then design a "space-time coordinate conversion system", so that the clock pulse has a uniquely determined space equivalent, coupled with a single-chip microcomputer, through the clock pulse The accumulated count realizes the displacement measurement and constitutes a "time-gate precision displacement measuring system".
Professor Ye Shenghua, an academician of the Chinese Academy of Engineering and director of the State Key Laboratory of Testing Technology and Precision Instruments of Tianjin University, and Other experts at the appraisal meeting organized by the National Natural Science Foundation of China believe that this result does not require a ruler to achieve precise angular displacement measurement. Innovative.
Peng Donglin said that the world-class precision mechanical engraving company has spent hundreds of millions of euros to build a multi-layer vacuum structure underground workshop in order to produce precision sensing components (gratings) for sensors in an ultra-clean and ultra-quiet environment. The time-grating sensor invented by Peng Donglin adopts the idea of ​​"establishing a relative motion bi-coordinate system, and the difference in position on one coordinate system is expressed as the difference in time observed on the other coordinate system", avoiding the space precision machinery. The demanding requirements of the engraving line on the production process make the large-scale production of the time grid sensor in the general environment possible.
Experts say that this technology is expected to improve the measurement accuracy and equipment manufacturing level of CNC machine tools in China.