An industrial camera fill light control method and system

Abstract

The present invention provides an industrial camera light supplement control method and system, the system includes: a control circuit module, the control circuit module is used to control the whole machine; a current correction / acquisition module, the module and the control circuit module connection; a thermistor voltage amplification module, which is connected to the control circuit module; and a lamp group module, which is connected to the control circuit module. The present invention also provides an industrial camera supplementary light control method using the above system. The industrial camera supplementary light control method and system provided by the present invention collect the current generated at the moment of exposure of the light-emitting module at high speed, and feed it back to the control module. The calculation performs rapid real-time adjustment on the light-emitting module to achieve precise control of single rapid exposure and continuous exposure intensity. At the same time, the invention adds temperature compensation and correction to the current sampling resistor and temperature drift compensation to the light intensity of the lamp group. This makes the high-frequency short-time luminous intensity more stable.

Description

technical field [0001] The invention belongs to the technical field of industrial automatic detection, and in particular relates to an industrial camera supplementary light control method and system. Background technique [0002] In the field of industrial visual inspection, lighting conditions have a great impact on the imaging quality of the inspection system, directly affecting the detection accuracy, recognition efficiency, and work reliability of the system. When the external light is insufficient, the supplementary light will be used for supplementary light processing. The supplementary light intensity of the fill light can be controlled by the control module, and different fill light intensities are provided for different scenes, so as to ensure that the brightness of the image picture is moderate, uniform and stable. [0003] Chinese patent document CN202385364U discloses a kind of industrial camera intelligent supplementary light controller, such as Figure 1-2 As s...

AI Technical Summary

Problems solved by technology

[0005] 1. Did not consider the influence of the filament resistance on the light intensity of the lamp group due to the change of the filament resistance with the temperature in the long-time working project of the supplementary light, resulting in that the brightness of the lamp group cannot be maintained stably

[0006] 2. The driving circuit of the prior art uses a triode to drive the load, which consumes a lot of power and has complicated wiring

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