USB总线在远程抄表系统中的应用

The using of usb in remote automatic read-meter system

为了提高远程抄表系统数据传输速率,克服系统中使用RS232给系统带来的速度瓶颈,引入usb总线,使用485/usb模块,有效的提高了系统传输速率。文中给出了该模块软硬件及上位机的程序设计方法。

In order to avoid the bottleneck RS232 in remote automatic read-meter system ,the paper introduces usb bus and 485/usb module ,giving the design of hardware and software. The module can effectively improve the transmission speed.