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The locomotive lighting control system is composed of two light sensors and a main controller, which can adjust the brightness of LED lighting lamps automatically according to the light intensity of the compartment's interior. Light sensors are installed on both sides of the compartment to detect the interior light intensity. The main controller is installed in each compartment of the control cabinet, connecting with dimming module of the LED driving circuit through the PWM output module, and adjusts LED light brightness in real time. The system saves the energy of the train lighting, makes the lighting inside intelligent and energy saving, improves the comfort for passengers and also reduces the train staff workload.