Machine vision light source system and control method thereof

Abstract

The invention discloses a machine vision light source system which comprises a lower computer, a host computer and a plurality of sets of illumination units. The lower computer comprises a one-chip microcomputer and serial driving chips. The one-chip microcomputer connects with the host computer through a serial port interface. Each set of the illumination units connects with a corresponding serial driving chip. The serial driving chips are in mutual serial connection, wherein one serial driving chip connects with the one-chip microcomputer. Each set of the illumination units is formed by a plurality of mutually independent light sources. According to the invention, an LED lightening state of a corresponding light source is manually set through an operation interface of the host computer, pixel level control of a light source plate is realized, a database parameter can be read, a work state of an LED on the light source plate can be set automatically, the lower computer communicates with the host computer and resolves data downloaded by the host computer into a corresponding LED work state on the light source plate, simultaneously reading a light source plate state through controlling a self flash memory is realized, and LEDs on a corresponding light source plate are set.

Description

technical field [0001] The invention relates to the field of light sources for machine vision, in particular to a machine vision light source system and a control method thereof. Background technique [0002] In the machine vision system, there are many types of light sources, including: surface light source, point light source, spherical integral light source, bar light source and so on. The common characteristics of these light sources are stability, long life, etc., but there is also a disadvantage: only all LEDs can be lit at the same time (for LED light sources). However, in some applications, it is required that certain LEDs on the light source board be lit while other LEDs are not lit. At present, it is relatively similar to the dynamic refresh method of LED advertising screens, but this dynamic refresh method of LED advertising screens cannot be applied to machine vision systems because of stroboscopic flicker. Contents of the invention [0003] The object of the...

AI Technical Summary

Problems solved by technology

The common characteristics of these light sources are stability, long life, etc., but there is also a disadvantage: only all LEDs can be lit at the same time (for LED light sources)

At present, it is relatively similar to the dynamic refresh method of LED advertising screens, but this dynamic refresh method of LED advertising screens cannot be applied to machine vision systems because of strobes.

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