【摘要】 定义了回波强度概念。基于此概念 ,设计并实现了一种便携、实用的强度型光纤浓度传感器。推导了浓度计算的理论公式 ,对盐溶液和糖溶液的浓度进行了实验测定 ,其测量分辨率达到 2 .6 7× 10 - 4,实验结果与理论分析相符。该传感器具有结构简单、操作灵活和价格低廉等特点 ,在溶液产品质评、环境监测、水位预警等方面具有实用价值更多还原

【Abstract】 The concept of the return intensity is defined Based on this concept,a simple and practical fiber type sensor has been designed and realized The theoretical formulae of contribution of liquids have been derived The contributions of the salt solution and the surgar solution have been measured experimentally,and the measuring resolution of the concentration is 2 67×10 -4 The experiemental results are agreement with the theoretical analyses This sensor combines the simplicity of structure,the facility of operation,wide range of measurement and low price It has application value in the ways of the evaluation of the quality of liquid products,the real time monitoring environment,the water height prewarning and so on更多还原