UNIVERSAL INERTIAL FIBER OPTICAL ACCELEROMETER Russian patent published in 2021 - IPC G01P15/06 

FIELD: measuring technology.

SUBSTANCE: invention relates to measuring technology. The accelerometer design includes three linear acceleration sensors and three angular acceleration sensors. The axes of each sensor type are mutually perpendicular. The sensors use a Bragg grating optical fiber glued to a spring and undergo flexural deformation under acceleration. The spring material with its rigidity normalizes the tension - compression of the optical fiber, increasing the reliability of the sensor design and expanding the range of measured accelerations. This range is further extended by placing several measuring elements with springs of different stiffness in the sensor. Optical fibers from the sensors are connected to an optical measuring system that processes the luminous flux from Bragg gratings and converts it into digital form. When the wavelength of the light flux from each sensor changes, the computer calculates the deformation and the corresponding acceleration in real time with a measurement frequency from units of hertz to tens of kilohertz.

EFFECT: improving the accuracy and reliability of measuring all possible accelerations of an object in a wide range.

1 cl, 3 dwg