Online correcting device of absolute grating ruler reading head parameters

A grating ruler and absolute technology, which is applied in the field of online correction device for absolute grating ruler reading head parameters, can solve the problems of repeated disassembly, time-consuming and laborious, low efficiency, etc., and achieve the effect of improving the correction efficiency

Inactive Publication Date: 2013-06-26
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0003] In order to solve the technical problems of repeated disassembly and assembly, time-consuming and laborious, and low efficiency existing in the exis

Method used

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  • Online correcting device of absolute grating ruler reading head parameters
  • Online correcting device of absolute grating ruler reading head parameters
  • Online correcting device of absolute grating ruler reading head parameters

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Embodiment Construction

[0010] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0011] Such as figure 1 As shown, the absolute grating ruler 1 to be corrected includes a main grating 11, a photoelectric receiver 12, a first FPGA 13, a ROM 14 for saving configuration parameters, a light source 15, an indicating grating 16 and a light source controller 17, a photoelectric receiver 12, a first FPGA 13 , ROM 14 , light source 15 , indicating grating 16 and light source controller 17 together constitute the reading head of absolute grating scale 1 , and the parameter data of the reading head to be corrected is the parameter data of photoelectric receiver 12 .

[0012] The online correction device of absolute grating ruler reading head parameter of the present invention comprises: PCI communication card 2 and PC machine 3, PCI communication card 2 comprises PCI interface controller 21 and the second FPGA22, PC machine 3 comprises PCI interface...

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Abstract

An online correcting device of absolute grating ruler reading head parameters relates to the technical field of grating ruler measuring. The online correcting device comprises a PCI (peripheral component interconnect) communication card and a PC (personal computer). The PCI communication card comprises a PCI interface controller and a second FPGA (field programmable gate array). The PC comprises a PCI interface and a main processor. Command parameters are sent to the PCI interface controller, the second FPGA receives the command parameters and transmits the same to a first FPGA of a grating ruler reading head, and the first FPGA writes data into a ROM (read only memory) in the reading head. During data transmission, state of the PCI communication card is inquired, when the PCI communication card is idle, data and data CRC (cyclic redundancy check) codes are transmitted, so that integrity and accuracy of data transmission is guaranteed. By the correcting device, online correction of grating ruler reading head parameters is achieved, and correction efficiency of grating ruler reading head is improved.

Description

technical field [0001] The invention relates to the technical field of grating ruler measurement, in particular to an online correction device for parameters of an absolute grating ruler reading head. Background technique [0002] Absolute grating scales for position measurement are widely used in the machining industry, and their performance affects the quality of machining. In general, the reading head in the absolute grating scale needs to be adjusted slightly according to its corresponding main grating and optical system. The parameter adjustment speed of the reading head is directly related to the production efficiency of the absolute grating scale. At present, the adjustment of the existing reading head parameters requires the reading head to be disassembled and then reinstalled, and the operation process is cumbersome and time-consuming. Contents of the invention [0003] In order to solve the technical problems of repeated disassembly and assembly, time-consuming...

Claims

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Application Information

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IPC IPC(8): G01D18/00
Inventor 刘建卓乔栋曾琪峰吴宏圣孙强赵建
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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