Optical fiber in-position sensor, optical fiber in-position sensing system, and in-position detection method

Abstract

The invention discloses an optical fiber in-position sensor. The fixed support of the collimator is installed in the shell of the fixed end. Between them, the fixed end of the magnetic metal shrapnel is fixed on the fixed support of the collimator, and the laser signal shielding end of the collimator is located in the shrapnel shielding groove, and the left section probe of the collimator of the fiber collimator is installed on the left section of the collimator In the probe installation hole, the collimator right section probe of the fiber collimator is installed in the collimator right section installation hole, and the collimator left section probe and the collimator right section probe can receive the laser signal of the collimator from the magnetic metal shrapnel. The blocking end is blocked; the moving end of the sensor is equipped with a magnet, and the magnet can suck up the blocking end of the collimator laser signal of the magnetic metal shrapnel when the relative position between the moving end of the sensor and the fixed end of the sensor is in place. The invention can be applied in the environment of strong electromagnetic interference.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, in particular to an optical fiber in-position sensor, an optical fiber in-position sensing system and an in-position detection method. [0002] technical background [0003] Optical fiber sensing technology has the characteristics of electrical insulation, anti-electromagnetic interference, corrosion resistance, strong chemical stability, wide measurement range, and long distance. Current presence detection systems are based on electrical sensors such as capacitive proximity sensors and inductive proximity sensors. Its working principle is that when the measured object is close to the sensing area of ​​the sensor, the position information is converted into an electrical signal, and the electrical signal is transmitted to the control center through a cable, thereby driving other equipment to work, and it is mostly used in automated industrial production, but in the requirement In the...

AI Technical Summary

Problems solved by technology

[0005] (1) To solve the technical problem of positioning detection in a strong electromagnetic environment, through the optical fiber proximity switch, the in-position signal when the equipment is moving is converted into an optical signal, and the optical signal is transmitted to the demodulation module by using an optical fiber without armor; to solve the problem of optical fiber proximity The switch can accurately detect the movement position information of the equipment and respond quickly to problems such as

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