基于CMOS图像传感器的水准仪自动安平系统研究

【作者】 徐进；

【导师】 陆祖康； 倪旭翔；

【作者基本信息】 浙江大学 ， 光学工程， 2004， 硕士

【摘要】 本论文详细论述了一种基于CMOS图像传感器的水准仪自动安平系统。由CMOS图像传感器获取的水准器图像信号经过单片机及其外围电路的处理，得到水准器中水泡的位置。单片机根据所得到的数据判断水准仪是否处于水平位置并控制步进电机将水准仪调节至水平位置。文章还讨论了系统的分辨精度和调节精度，以及提高精度的方法。实验结果表明该自动安平系统能较好地实现水准仪的自动安平，该系统将使用大地测量仪器的安平步骤大大简化，进行测量更加简单方便。 本论文具体描述了该自动安平系统的硬件及软件组成。硬件部分主要包括图像传感器、中央处理器及其外围电路和电机驱动三个部分。软件组成主要包括CMOS图像传感器的图像采集、图像信号处理、单片机IO口模拟IIC总线传输数据和电机驱动的嵌入式程序。 论文对该系统以后的改进也作了一些论述。更多还原

【Abstract】 An auto leveling instrument system based on CMOS image sensors is described in this thesis. The MCU and its outside circuits handle the image signals obtained by CMOS image sensors, to locate the positions of the bubbles in the plate level. In addition, the MCU judges whether the plate level has been a horizontal place according to these data, and then control the stepping motor to make the instrument level. Topics on the system distinguishing precision and the adjustable precision are also discussed in this thesis, as well as the method to improve the precision. The experiment results show that this auto leveling system can achieve the goal of auto leveling fairly well. What is more, such system greatly simplify the leveling steps in geometric instrument, making it more convenient in measurement.The hardware and software components are introduced at length. In this thesis hardware components consist of the image sensors, the MCU and its outside circuits, and the motor driving. Software components primarily include the image Collection of CMOS image sensors, image signal processing, data transmission simulation of the 1IC bus in the MCU’s I/O ports, and the embedded codes of motor driving.The possible improvements of the current system are provided in the end.更多还原