论文部分内容阅读
为了解决光电传感器用电动镜头盖的控制精度、抗风能力以及提高可靠性,提出了基于单圈电位器和电机驱动电流变化的级联位置检测技术。启动开盖或关盖程序后,先检测单圈电位器中间抽头电压,当抽头电压超过某位置阈值后,再检测驱动镜头盖电机的电流变化,当驱动电机的电流变化超过某一阈值时则认为镜头盖到达理想的打开或关闭状态。级联位置检测技术能够精确地检测镜头盖的终了位置,将镜头盖的控制精度控制在2°以内。此外,该技术摒弃了用于检测镜头盖终了位置的小型限位开关,提升了镜头盖的可靠性。
In order to solve the control accuracy, wind resistance and reliability of the photoelectric lens cover, a cascade position detection technology based on single-turn potentiometer and motor driving current is proposed. After starting the process of opening or closing the lid, first detect the tap voltage of the lap potentiometer. When the tap voltage exceeds a certain threshold, the current of the lens cap motor is detected. When the current of the driving motor exceeds a certain threshold Think of the lens cover to reach the ideal open or closed state. Cascading position detection technology can accurately detect the end of the lens cap position, the lens cap control accuracy control within 2 °. In addition, the technology eliminates the need for a small limit switch to detect the end of the lens cap, increasing the reliability of the lens cap.