基于USB协议的望远镜多波带控制系统设计

怀柔观测基地的多通道太阳望远镜是通过数十个电机调节晶体偏转角度实现多波带同时观测的自动控制。原有的计算机是通过一个串行接口控制若干个调波带的电机,响应时间长,速度慢且技术比较落后。本文利用当今流行的USB2.0芯片CYPRESS EZ-USB改造原有的串口通信控制系统,大大提高了响应的速度,同时,为解决一个USB应用程序控制多个电机转动的问题,提出了一种"编号"的方法。这样每个USB设备不论其插入顺序,PC主机都能通过识别其固定编号而加以区分,PC主机可以通过4个USB接口(16个电机)控制多通道太阳望远镜滤光嚣的调制角度,实现自动控制。这为大规模改造其他计算机接口提供了研制基础。

The Design of Multi-passband Control System for Telescope Based on USB Protocol

The host computer controls the multi - passband control system of the solar telescope automatically though adjusting the crystal angle with dozens of machines in HuaiRou Solar Observing Station. The previous computer controlled several machines to adjust multi - passband system by only one serial interface. It must take much more time and its speed is quite slow, therefore this technic has fallen back . The use of the widely used USB chip CYPRESS EZ - USB to reform old serial interface is largely fast for the speed of response . The article also puts forward a method of "serial number". By this way the host computer can identify each USB equipment by its fixed serial number, no matter the inserting sequence is. PC controlles the crystal angle of the multi - passband solar telescope (16 machines) by four devices. This would be a basis for other computer interfaces reforms.