Light supplement lamp control method based on code scanning equipment

Through the coordination of the camera module, processor and analog switch, the flash frequency and current intensity of the fill light are adjusted using the PWM control signal, which solves the problem that the fill light cannot be adjusted in the existing technology, and achieves accuracy during the exposure period Control reduces the power consumption of the code scanning device and improves the code scanning efficiency.

CN119183238APending Publication Date: 2024-12-24SHENZHEN IDATA TECH CO LTD
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Patent Information

Application Number
CN202411536054.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-31
Publication Date
2024-12-24

AI Technical Summary

Technical Problem

When existing code scanning equipment collects images of high-speed and reflective objects, the fill light cannot adjust the working time, current intensity and brightness in real time, resulting in an increase in power consumption of the entire machine.

Method used

Through the cooperation of the camera module, processor and analog switch, the flashing frequency and current intensity of the fill light are controlled using the PWM control signal to ensure the accurate control of the fill light during the image exposure period, and dynamic adjustment of the fill light status is achieved. .

Benefits of technology

It improves the motion fault tolerance performance during image acquisition, reduces the overall power consumption of the code scanning device, and improves the code scanning success rate.

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Abstract

The invention provides a light supplement lamp control method based on a code scanning device, and relates to the technical field of bar code recognition. The method comprises the steps that a camera module collects an image, triggers an analog switch to be turned on, and triggers a processor to output a control signal to a light supplement lamp power supply chip through the analog switch at the same time so as to control the state of a light supplement lamp; the processor outputs a configuration signal to the light supplement lamp power supply chip so as to configure the maximum current intensity of the light supplement lamp; and the processor decodes the acquired image, if the decoding is successful, the analog switch is controlled to be turned off, so that the control signal cannot be transmitted to the light supplement lamp power supply chip, the light supplement lamp is turned off, and the camera module is controlled to stop acquiring the image at the same time. Through mutual cooperation of the camera module, the processor, the analog switch and the light supplement lamp power supply chip, accurate regulation and control of the light supplement lamp turn-on duration and the current intensity in the exposure period are synchronously realized, and the purposes of dynamically adjusting the working state of the light supplement lamp and reducing the overall power consumption of the code scanning equipment are realized.
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