An incremental photoelectric encoder signal processing device and processing method
A signal processing device and photoelectric encoder technology, which is applied in the field of photoelectric encoders, can solve the problems of large volume, high cost, and long development cycle, and achieve the effects of reducing volume, number, and power consumption
Active Publication Date: 2021-03-30
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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[0037] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0038] like figure 1 As shown, first, the signal input terminal of the present invention is 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, the moiré fringe signal function expression for:
[0039]
[0040] Among them, b is the width of the light-transmitting region in the grating. Perform Fourier transform on the above formula to 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 grating transmission characteristics can be obtained:
[0045]
[0046] in, call...
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The invention relates to an incremental photoelectric encoder signal processing device, which comprises: a photoelectric receiver tube, a sliding rheostat, and a micro-controller connected in sequence; the micro-controller comprises a voltage comparison interrupt module and a waveform output module. The invention uses the sliding rheostat and the microcontroller to replace the traditional amplifying and shaping and logic gate circuits. When the circuit is working, only the sliding rheostat needs to be debugged to obtain a signal with a suitable amplitude, which is sent to the microcontroller to greatly reduce the number of electronic components required. number, reduce the size and reduce the power consumption. The shaping and counting functions of the incremental photoelectric encoder can be realized directly through the voltage comparison interruption of the microcontroller itself, which can provide the upper-level system with data in the form of square wave and binary angle, which is more convenient and flexible. At the same time, the working mode selection function of the incremental photoelectric encoder is added, which can provide the upper-level system with data in the form of square wave and binary angle, which 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 because of its high resolution, wide measurement range, reliable use, and easy maintenance. Photoelectric encoders can be divided into: incremental and absolute from the encoding method. Incremental photoelectric encoder has the advantages of simple encoding method, stable and reliable work, and fast response speed. [0003] At present, the main signal processing devices of incremental photoelectric encoders are implemented by performing differential amplification, shaping and logical operation on the signal output by the photoelectric receiving diode, and then performing operation processing through a microprocessor; or...
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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