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Light source control method

A technology of light source control and light source controller, applied in the field of light source control, can solve problems affecting product quality, difficult to grasp brightness and color temperature, analog type cannot be quantified, etc.

Inactive Publication Date: 2018-06-29
NINGBO SUNNY OPOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The analog type cannot be quantified, and it is difficult to grasp the brightness and color temperature
PWM digital control light source, because the output voltage or current is not smooth, it is easy to cause ripples in the image of the camera module, which seriously affects the product quality

Method used

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Embodiment Construction

[0033] The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

[0034] Those skilled in the art should understand that in the disclosure of the present invention, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention...

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Abstract

The invention provides a light source control method used to control at least one light source. The method comprises the following steps that (A) at least one microcontroller of at least one light source controller sends the digital work state of the light source to at least one digital-to-analog converter of the light source controller via at least one SPI bus; (B) the digital-to-analog converterconverts the digital work state of the light source into an analog quantity; (C) the analog work state of the light source is output to at least one operational amplifier of the light source controller; (D) the operational amplifier amplifies the analog work state of the light source proportionally; (E) at least one driver of the light source controller drives the light source to work according to an input analog signal; and (F) at least one output feedback circuit of the light source controller outputs the work state of the light source to the microcontroller, and the microcontroller adjuststhe work state of the light source according to feedback.

Description

technical field [0001] The invention relates to the field of light source control, in particular to a light source control method, which realizes the control of the light source through a light source adjustment device with stable output and high precision. Background technique [0002] Traditional light source controllers mainly use analog and PWM (pulse width modulation) digital methods to control the brightness of the light source. The analog type is the manual knob method, and the PWM method controls the brightness of the light source by controlling the pulse duty cycle. [0003] In general applications, the traditional light source controller can supply power for the supplementary light of the machine vision camera, control the brightness and working status of the supplementary light, and can also control the strobe of the light source controller through the signal to meet the application requirements, and can extend the Light source life. The analog dimmer can only ad...

Claims

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Application Information

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IPC IPC(8): H05B37/02H05B33/08H05B44/00
CPCH05B45/37H05B45/00H05B47/10
Inventor 毛海科郭波锋蒋文斌
Owner NINGBO SUNNY OPOTECH CO LTD
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