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A grating photoelectric signal speed test device

A technology of photoelectric signals and testing devices, which is applied in the field of automation and can solve problems such as failure to meet requirements

Inactive Publication Date: 2016-07-06
HEFEI UNIV OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] At present, most of the grating digital displays commonly used in the machine tool industry in my country have a precision of 5um, which cannot meet the requirements of modern factory workshops

Method used

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  • A grating photoelectric signal speed test device
  • A grating photoelectric signal speed test device
  • A grating photoelectric signal speed test device

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Embodiment Construction

[0028] The system composition of grating photoelectric signal velocity tester of the present invention is as follows figure 2 As shown, it includes four parts: a power supply 1, an analog high-speed grating optical signal generator 2, a subsequent processing system 3 for the measured grating photoelectric signal, and a voltage measurement display 4. The power supply 1 supplies power to the system; the analog high-speed grating optical signal generator 2 generates periodically changing light intensity information, and the light intensity change is the same as the moiré fringe generated by the relative movement of the metering grating, and simultaneously converts the light intensity change into an electrical signal; from the analog high-speed The electrical signal generated by the grating optical signal generating device 2 is connected to the subsequent processing system 3 of the measured grating optical signal to obtain the voltage change value; finally, the displacement measur...

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Abstract

The invention discloses a grating optoelectronic signal speed testing device. The grating optoelectronic signal speed testing device comprises a power supply, a high-speed grating optical signal simulation generating device, a subsequent processing system for tested grating optoelectronic signals and a voltage measurement displayer. The power supply supplies power to the system. The high-speed grating optical signal simulation generating device generates light intensity information changing periodically, moire fringes generated when the light intensity changes and measurement gratings make relative motion are the same, and meanwhile the light intensity changes are converted into electric signals. The electric signals generated by the high-speed grating optical signal simulation generating device are connected into the subsequent processing system for the tested grating optoelectronic signals to obtain a voltage change value. The displayed displacement measurement value is analyzed, and whether the subsequent processing system for the tested grating optoelectronic signals can be matched with the tracking speed of the gratings is tested. Grating high-speed linear motion signals are simulated by rotation motion of the high-speed gratings, and the grating optoelectronic signal speed testing device is used for solving the problem about the signal processing speed of the subsequent processing system for the tested grating optoelectronic signals.

Description

Technical field: [0001] The invention relates to the automation field, in particular to a grating photoelectric signal simulation device. Background technique: [0002] Due to the characteristics of the grating sensor, such as high measurement accuracy, wide dynamic measurement range, non-contact measurement, and easy realization of system automation and digitization, the metrological grating measurement technology based on Moiré fringes has been widely used in the past ten years, and the grating sensor has become a high-tech Indispensable prerequisite for precise positioning and high-speed machining. [0003] The working principle of the metering grating sensor (hereinafter referred to as the grating sensor) is as follows: figure 1 As shown, it is generally composed of a light source 1, a condenser lens 2, two scale gratings 3 with the same or similar grating pitch, an indicator grating 4, a photoelectric device 5 and a photoelectric signal subsequent processing system 6. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D18/00G01B11/02
Inventor 夏豪杰张进于连栋尚平刘芳芳邓华夏李维诗
Owner HEFEI UNIV OF TECH
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