CSIR Technology Portal
CSIR Technology Portal

 New Invention Profile

Publication No: IN202211044095 [India] Application No: 202211044095
Title: Fiber bragg grating based vibration and temperature monitoring system for stator end windings of generator
Publication Date: 02-02-2024 File Date: 01-08-2022
Inventor(s): Palas Biswas; Somnath Bandyopadhyay; Nandini Basumallick; Biplab Mitra; Dipten Kumar; Tanoy Kumar Dey; Radhey Shyam Maurya; Jitendra Singh
IPC Classification: G01D5/353, H01S5/0687, G01P15/093, G02B6/02, G01V1/18
Abstract: This system comprises of a multitude of modified cantilever based FBG vibration sensors, optical fiber feed-through, optical couplers  and a signal processing system developed using a single wideband source and standard CCD based linear detector array for  wavelength monitoring with wavelength resolution of the order of 1 pm. The sensor housing and cantilever are made up of a ceramic  material. A single FBG is fixed between two blocks on the cantilever. The material and dimensions of the components of the sensor  are chosen so as to achieve the required sensitivity and resonance frequency to cover the desired measurement range. The  displacement measurement range is 10 µm (p-p) to 1 mm (p-p) and the frequency bandwidth is 30 Hz to 500 Hz. The sensor response  in terms of Bragg wavelength shift is proportional to the acceleration. A Labview based software was developed to acquire and record  the Bragg wavelength of the FBG sensors from the CCD based wavelength monitor and to convert the Bragg wavelength shift to  acceleration using calibration data of the sensor. Figure 1
Startup Options: Advantages:

This system comprises of a multitude of modified cantilever based FBG vibration sensors, optical fiber feed-through, optical couplers  and a signal processing system developed using a single wideband source and standard CCD based linear detector array for  wavelength monitoring with wavelength resolution of the order of 1 pm. 
CSIR-Central Glass and Ceramic Research Institute
CSIR-Central Glass and Ceramic Research Institute[CSIR-CGCRI]
:  director[at]cgcri[dot]res[dot]in
:91-33- 24735829
:https://www.cgcri.res.in
Industrial Applications Instrumentation, Appliances, Devices Applications [Instrumentation, Appliances, Devices] Measurement [Instrumentation, Appliances, Devices] Optical [Communications] Sensors [Electronics]