测绘相机调焦控制检测系统的设计与实现

摘要

随着航天技术、信息技术的发展，使用高分辨率测绘相机对地观测已成为获取地理空间信息的一种重要手段。调焦控制电路对相机的调焦精度是影响测绘相机成像的重要因素。为保证调焦控制电路对调焦步进电机的控制精度，保证调焦机构控制的准确性。文中提出一种测新型的绘相机调焦控制检测系统，利用新型中断式信号采集方法从电机控制端检测并监视调焦控制电路输出控制波形。介绍了检测系统的原理、信号采集方式；给出该系统的组成，硬件软件的实现。实验证明，该系统为调焦电路准确控制输出提供可靠依据。%With the development of aerospace and information technology, high-resolution mapping camera has become important way to detect geography information. The resolution of focusing circuit affects the image quality of mapping camera. In order to control the resolution of focusing circuit, the paper brings out a system which can detect and monitor the wave of focusing circuit. And introduce the principle, the way of collecting signal. The paper also introduce constitutes of the system and how to design software and hardware. Experiments prove that this system gives reliable basis for exactly controlling the focusing circuit.