The proposed channel-selecting control method is fully based on hardware. Advantages include quick repercussion, high dependability, robust against interference, without the need of programming and easy to extend. This method is worth popularizing.

• 完全基于硬件实现通道选择控制反应速度快,可靠性高,抗干扰性能好,不用编程,扩展容易,是值得推广的方法。