CAJ | 학술논문

结合L ED节能环保、超长寿命的优点，采用了恒流驱动方式。以S T C89C51单片机为控制核心，采用PWM 技术对LED灯发光强度进行控制，通过亮度传感器采集车厢内的亮度信息，对车厢内L ED照明系统进行亮度调节。仿真结果表明，系统L ED发光亮度均匀，达到了设计要求。
결합L ED절능배보、초장수명적우점，채용료항류구동방식。이S T C89C51단편궤위공제핵심，채용PWM 기술대LED등발광강도진행공제，통과량도전감기채집차상내적량도신식，대차상내L ED조명계통진행량도조절。방진결과표명，계통L ED발광량도균균，체도료설계요구。
The energy-saved and long-life-span LED is driven by constant current .STC89C51 single chip is chosen as the controller and PWM technology is applied to control the light intensity .The brightness information collected by a brightness sensor is sent to the controller as the feedback for adjusting the brightness .The simulation results illustrate that the brightness of the LED luminous system is even ,which arrives at the needed indexes .