Optical fibre transmission type rotary encoding device

Abstract

The invention discloses an optical fibre transmission type rotary encoding device. The optical fibre transmission type rotary encoding device comprises an energy light source for providing a working energy, an energy optical fibre for transmitting a light source signal provided by the energy light source, an encoding unit for performing energy conversion, decoding processing and communication output based on the light source signal provided by the energy light source, and an upper computer for receiving the communication output signal of the encoding unit and controlling the working of the encoding unit, wherein the energy light source is connected to the encoding unit via an energy optical fibre; and the upper computer is connected to the encoding unit via a communication optical fibre. With the adoption of the optical fibre transmission type rotary encoding device disclosed by the invention, defects such as incapacity of being used in occasions with a high-insulation requirement in the prior art can be overcome; and the optical fibre transmission type rotary encoding device has the advantages of being capable of being used in occasions with a high-insulation requirement, being far in conveying distance, and high in anti-electromagnetic interference capacity.

Description

technical field [0001] The invention relates to the technical field of encoding equipment, in particular to an optical fiber transmission type rotary encoding device. Background technique [0002] A rotary encoder is a sensor that converts the mechanical geometric displacement on the output shaft into pulses or digital quantities. According to the detection principle, the encoder can be divided into optical, magnetic, inductive and capacitive. According to its calibration method and signal output form, it can be divided into three types: incremental type, absolute type and mixed type. [0003] The most widely used rotary encoder is the photoelectric encoder. This kind of 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 disc is coaxial with the motor, when the motor rotates, the grating d...

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Problems solved by technology

[0004] The above-mentioned traditional encoders can be applied to most occasions, but for occasions with high insulation requirements such as power equipment, the direct interconnection between the high-voltage side and the low-voltage control side cannot be realized because the output signal is transmitted by wires.

[0005] In the process of realizing the present invention, the inventor found that there are at least some defects in the prior art that cannot be used in occasions requiring high insulation

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