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超声波检测金属方案求教

Other Parts Discussed in Thread: MSP430FR6047

1、我想使用超声波检测金属管道是不是空的,管道有些地方会被金属碎屑堵住,有没有什么好的方案吗?MSP430FR6047这个可行吗?

2、MSP430FR6047超声波是单片机发出的吗?还需要外部的超声波发生器件吗?