ULTRASONIC OPTICAL-FIBER HYDROGEN DETECTING SENSOR

摘要

The present invention provides an ultrasonic wave optical fiber hydrogen detection sensor which comprises: an electrical signal device for generating and detecting an electrical signal; a piezoelectric device which is connected to the electrical signal device for generating ultrasonic wave when an electrical signal is applied and generating an electrical signal when ultrasonic wave is applied; and a plurality of optical fibers of which one end are connected to the piezoelectric device and one or more hydrogen reaction unit is formed in a predetermined part wherein the plurality of optical fibers measure the concentration of hydrogen with high sensitivity in a range of two or more times greater by outputting the output voltage of the electrical signal in two or more times. According to the ultrasonic wave optical fiber hydrogen detection sensor of the present invention, the sensor is capable of outputting the output voltage two or more times greater by using a plurality of optical fibers which have a hydrogen reaction unit, improves the sensitivity for detecting hydrogen by reducing the output voltage by half or less than half smaller because the propagation of ultrasonic wave is interrupted or the ultrasonic wave is lost due to the hydrogen reaction units which is formed in the optical fibers, and has effects on improving the accuracy of the hydrogen detection and the stability. [Reference numerals] (110) Electrical signal device