Marking controller based on USB interface

Abstract

This invention relates to one target controller based on USB interface in laser marker controller, which comprises USB interface controller unit, data memory unit, program memory unit, D / A conversion unit, logic control unit and human to machine interface unit.

Description

technical field [0001] The invention belongs to a marking controller of a laser marking machine, in particular to a marking controller based on a USB interface of a universal serial bus. Background technique [0002] In the galvanometer scanning laser marking system, the hardware circuit of the control system is a control card designed based on the computer ISA bus or PCI bus. Stable operation will affect the stability of the marking system; the analog voltage signal output by the control card must be transmitted to the galvanometer control circuit through a long cable, and the strong electromagnetic interference generated by the laser power supply in the marking system It is easy to be introduced into the vibrating mirror control circuit through the transmission cable, affecting the normal operation of the vibrating mirror; the control card needs to be used together with the computer, which increases the volume and cost of the control system. There is also a laser marking ...

AI Technical Summary

Problems solved by technology

[0002] In the galvanometer scanning laser marking system, the hardware circuit of the control system is a control card designed based on the computer ISA bus or PCI bus. Stable operation will affect the stability of the marking system; the analog voltage signal output by the control card must be transmitted to the galvanometer control circuit through a long cable, and the strong electromagnetic interference generated by the laser power supply in the marking system It is easy to be introduced into the vibrating mirror control circuit through the transmission cable, affecting the normal operation of the vibrating mirror; the control card needs to be used with the computer, which increases the volume of the control system and increases the cost of the control system

There is also a laser marking controller controlled by a single-chip microcomputer, although it is separated from the ISA bus or PCI bus of the computer, but the storage capacity of the single-chip microcomputer is limited, and its interpolation operation speed is very slow, and only some simple interpolation algorithms can be performed. , so it is not possible to mark some complex patterns, its scope of use is limited, and the advantages of flexible use of laser marking cannot be fully utilized

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