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Incremental photoelectric encoder signal processing device and processing method

The technology of a signal processing device and a photoelectric encoder, applied in the field of photoelectric encoder, can solve the problems of high cost, large volume and high power consumption, and achieve the effects of reducing power consumption, volume and number

Active Publication Date: 2020-06-30
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The present invention aims to solve the technical problems of the existing incremental photoelectric encoder signal processing device, such as large volume, high power consumption, complex circuit design and debugging, long development cycle and high cost, and provides a signal processing device for incremental photoelectric encoder Device and treatment method

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  • Incremental photoelectric encoder signal processing device and processing method
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  • Incremental photoelectric encoder signal processing device and processing method

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Embodiment Construction

[0037] The present invention will be described in detail below with reference to the accompanying drawings.

[0038] like figure 1 As shown, the signal input end of the present invention is first described. The parallel light emitted by the light source is incident on the Moiré fringe light field grating composed of the indicator grating and the main grating. When the main grating rotates relative to the indicator grating, its moire fringe signal function expression for:

[0039]

[0040] where b is the width of the light-transmitting region in the grating. Taking the Fourier transform of the above formula, we get:

[0041]

[0042] Among them, a 0 ~a i are the coefficients of each cosine component, respectively. Calculated as follows:

[0043]

[0044] In the formula, p is the grating period, and a 0 and a i Substituting into formula (2), the function expression of the transmission characteristics of the grating can be obtained:

[0045]

[0046] in, ca...

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Abstract

The invention relates to a signal processing device of an incremental photoelectric encoder. The signal processing device comprises a photoelectric receiving tube, a slide rheostat and a microcontroller which are connected in sequence, the microcontroller comprises a voltage comparison interruption module and a waveform output module. The slide rheostat and the microcontroller are used for replacing a traditional amplification shaping and logic gate circuit, when the circuit works, only the slide rheostat needs to be debugged to obtain a signal with a proper amplitude, the signal is sent to the microcontroller, the number of needed electronic components is greatly reduced, the size is reduced, and power consumption is reduced. Shaping and counting functions of the incremental photoelectricencoder are achieved directly through voltage comparison interruption of the microcontroller, square wave data and binary angle data can be provided for a superior system, and the system is more convenient and flexible. And meanwhile, a working mode selection function of the incremental photoelectric encoder is added, so that data in two forms of square waves and binary angles can be provided fora superior system, and the method is more convenient and flexible.

Description

technical field [0001] The invention belongs to the technical field of photoelectric encoders, and in particular relates to an incremental photoelectric encoder signal processing device and processing method. Background technique [0002] Photoelectric encoder is a digital angle measuring device integrating light, machine and electricity. It is widely used due to its advantages of high resolution, wide measurement range, reliable use, and easy maintenance. Photoelectric encoders can be divided into incremental and absolute types from the coding method. Incremental photoelectric encoder has the advantages of simple coding method, stable and reliable operation and fast response speed. [0003] At present, the signal processing devices of the main incremental photoelectric encoders are all realized by differential amplification, shaping and logical operation of the signal output by the photoelectric receiving diode, and then processing by the microprocessor; or by using a spe...

Claims

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Application Information

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IPC IPC(8): G01D5/36
CPCG01D5/366
Inventor 韩庆阳陈赟张晰高胜英
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI