Measurement About Consistency of Soil in River
When a beam of laser pass through water medium, the beam strength would be decreased according to the longer of water medium; if mix some soil into water, and the beam strength would further be decreased according to consistency of soil water; and the strength change mainly relate to the soil water consistency. If install a photoelectric sensor behind the soil water, the strength changes of the beam can be turn into the voltage changes by photoelectric sensor; in this device, a recompense optical path designed, it would decreased the measure error. Thus if the output voltage of two photoelectric sensors can be measured and the voltages difference of two photoelectric sensors can be measured by a compare unit, then the consistency of soil water would be measured by measured the output voltage Vo of compare unit. If import the voltage Vo into a computer, the consistency of soil water would be displayed on screen and stored in the computer.
laser photoelectric sensor compare unit consistency of soil water photoelectric electric current
Zhang Xufeng
Department of physics, North University of China Taiyuan, Shanxi, 030051, P.R.C
国际会议
北京
英文
2007-08-05（万方平台首次上网日期，不代表论文的发表时间）