Abstract:
An optical sensing system for sensing hydrogen in a fluid comprising a first optical sensor comprising a first optical fiber, wherein an end portion of the first optical fiber is coated with a first hydrogen- sensitive multilayer on an end surface perpendicular to a longitudinal axis of the first optical fiber, the first multilayer being adapted to change its optical properties dependent on a hydrogen partial pressure in the fluid and dependent on a temperature of the fluid, with a known first characteristic; a second optical sensor comprising a second optical fiber, wherein an end portion of the second optical fiber is coated with a second hydrogen-sensitive multilayer on an end surface perpendicular to the longitudinal axis of the second optical fiber, the second multilayer being adapted to change its optical properties dependent on the hydrogen partial pressure in the fluid and dependent on a temperature of the fluid, with a known second characteristic which is different from the first characteristic; at least one light source adapted for coupling light into the first optical fiber and the second optical fiber, at least one light detector adapted for detecting light reflected by the first and second multilayer, a control unit adapted for calculating the hydrogen partial pressure in the fluid by using the first characteristic and the second characteristic and an output signal of the at least one light detector.
Abstract:
Sensor óptico (10) para detectar hidrógeno en un fluido (12) en contacto físico con el sensor óptico, que comprende una fibra óptica (15), en la que una parte extrema (18) de la fibra óptica está recubierta con una multicapa (20) que comprende: - una capa de detección (24), que comprende una película de una aleación, comprendiendo la aleación Mg, Ni y M, donde M es por lo menos uno de Zr, Ta y Hf, y en el que la aleación tiene la composición MgxNiyMz, y donde x es entre 40 y 60, y es entre 10 y 40 y z es entre 10 y 40, - una capa de catalizador (26) que comprende Pd.
Abstract:
An optical sensor for detecting hydrogen in a fluid in physical contact with the sensor is provided. The sensor comprises an optical fiber, wherein an end portion of the optical fiber is coated with a multilayer comprising: a sensing layer, comprising a film of an alloy, the alloy comprising Mg, Ni, and M, wherein M is at least one of Zr, Ta, and Hf, and wherein the alloy has the composition Mg x Ni y M z , and wherein x is from 40 to 60, y is from 10 to 40, and z is from 10 to 40, and a catalyst layer comprising Pd. Further, a detection system for hydrogen, comprising such an optical sensor, and an electrical device having such a detection system are provided.
Abstract translation:提供了用于检测与传感器物理接触的流体中的氢的光学传感器。 所述传感器包括光纤,其中所述光纤的端部涂覆有多层,所述多层包括:感测层,所述感测层包括合金膜,所述合金包含Mg,Ni和M,其中M是以下中的至少一个: Zr,Ta和Hf,并且其中所述合金具有组成Mg x Ni y M z,并且其中x为40-60,y为10-40,z为10-40,催化剂层包含 钯。 此外,提供了一种包括这种光学传感器的用于氢的检测系统,以及具有这种检测系统的电子设备。