An optical fiber output photoelectric encoder

Abstract

An optical fiber output photoelectric encoder comprises a light source, a code disk, a supporting shaft, a slit disk, a receiver and a decoder. The code disk and the slit disk are arranged on the supporting shaft. The optical fiber output photoelectric encoder further comprises at least one optical fiber and at least one output optical fiber, wherein the input optical fiber is matched and connected with the light source, and the output optical fiber is matched and connected with the receiver. The light signals emitted by the light source are transmitted to the code disk through one input optical fiber, the code disk can modulate the light signals and transmit the modulated light signals to the receiver through one output optical fiber or a plurality of output optical fibers, and the decoder can decode the signals received by the receiver to obtain the corresponding position of the code disk. The photoelectric encoder further comprises an encoder casing, the light source, the input fiber, the output optical fibers, the receiver and the decoder are arranged outside the encoder casing, and the code disk, the supporting shaft and the slit disk are arranged in the encoder casing. The optical fiber output photoelectric encoder has the advantages of solving the problem that the photoelectric encoder is limited to be used in special and severe conditions of with high-pressure, electric, corrosive, flammable, combustible and waterproof requirements.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing and measurement, in particular to a photoelectric encoder with optical fiber output. Background technique [0002] The photoelectric encoder is an angle (angular velocity) detection device that converts the angle of the input shaft into corresponding electrical pulses or digital quantities using the principle of photoelectric conversion. It has the advantages of small size, high precision, reliable operation, and digital interface. It is widely used. It is used in devices and equipment that need to detect angles, such as CNC machine tools, rotary tables, servo drives, robots, radars, and military target measurement. The photoelectric encoder is composed of a grating disk and a photoelectric detection device. The grating disk is opened with several rectangular holes in equal parts on a circular plate with a certain diameter. Since the photoelectric code disk is coaxial with the motor,...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a photoelectric encoder with optical fiber output and its measurement method for the defect that the existing photoelectric encoder has the above-mentioned electrical working parts affected by the environment, so as to eliminate the defect and solve the problem of the encoder in high voltage, Restricted use under special harsh conditions such as electrical, corrosion, flammable and explosive, and high waterproof requirements

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