Temperature insensitive optical fibre grating acceleration sensor

An acceleration sensor, fiber grating technology, applied in the direction of speed/acceleration/shock measurement, measurement acceleration, speed/acceleration/electric shock meter detailed information, etc. The effect of simplifying the packaging process and the simple manufacturing process
CN101285847BInactive Publication Date: 2010-08-25INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
0 Cites 9 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
Publication Date
2010-08-25
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a temperature-insensitive optical fiber grating acceleration sensor, which comprises an outer casing used as a support structure of the acceleration sensor, an optical fiber grating used to measure acceleration, a shaft fixed on the front sidewall and the back sidewall of the acceleration sensor, an L-type lever arranged on the shaft and a mass block fixed on the horizontal end part of the lever, wherein one end of the optical fiber grating is fixed on the inner wall of one end of the acceleration sensor, while the other end parallelly passes through the small hole on the other end of the acceleration sensor and extends outside the acceleration sensor; the L-type lever is used to send vibration signal to the optical fiber grating connected with the lever, and the folding point of the cross part of the vertical part and the horizontal part of the L-type lever is in movable connection with the shaft; and the mass block is used to adjust the sensitivity and the natural vibration frequency of the sensor. The optical fiber grating acceleration sensor increases sensitivity and improves packaging technology.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of optical fiber sensors, in particular to a temperature-insensitive optical fiber grating acceleration sensor. Background technique

[0002] Compared with the corresponding conventional sensors, optical fiber sensors also have obvious advantages in terms of sensitivity, dynamic range, and reliability. They are particularly prominent in the fields of national defense and military applications, and are listed as key national defense technologies by many countries.

[0003] Optical fiber accelerometer is an instrument that uses the light transmission characteristics of optical fiber and various modulation effects generated by its interaction with the surrounding environment to detect vibrations on the ground, in the air or on the seabed. Compared with the traditional piezoelectric accelerometer, it has the following main advantages: wide frequency range, high sound pressure sensitivity, no electromagnetic inte...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More