Industrial camera light supplement control method and system

Abstract

The invention provides an industrial camera light supplement control method and system, and the system comprises: a control circuit module which is used for the control of a whole machine; A current correction / acquisition module which is connected with the control circuit module; a thermistor voltage amplification module which is connected with the control circuit module; and a lamp bank module which is connected with the control circuit module. The invention further provides an industrial camera light supplement control method using the system. According to the industrial camera light supplement control method and system provided by the invention, high-speed acquisition is carried out on the current generated at the exposure moment of the light emitting module; the current is fed back tothe control module; the light-emitting module is adjusted rapidly in real time through operation, accurate control over single-time rapid exposure and continuous exposure intensity is achieved, and meanwhile temperature compensation and correction of the current sampling resistor and light intensity and temperature drift compensation of the lamp set are added. The method and system make 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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