【摘要】 光纤强度型传感器技术成熟,结构简单、造价低廉。但对光源的稳定性要求较高。本文的光纤压力传感系统能有效地克服这一缺点。该压力传感系统的输出信号取决于两路光纤的输出光强信号之比。测试结果表明,该系统能自动地补偿由于电源不稳定、器件老化等因素导致的光源强度变化对测量结果的影响。更多还原

【Abstract】 The intensity modulating type fiber-optic sensors need a good stability light source,even though they have many merits such as ripe modulating technique,simple structure and low cost for sensors employer.In this paper,a fiber-optic pressure sensor system which can overcome this disadvantage eff-ectively is described.The output of the pressure sensor depends on the ratioof the two receiving intensities.The testing results show that the systemcan automaticlly compensate the effect of light source variation due to elec-tric source unstableness or ageing of the light source device on the measuringresult.更多还原