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目前,矿井运输系统矿车数量一般采用人工清点获得,是一件看似简单而又麻烦的事,但往往会产生重复计数或漏计,使矿井管理者不能及时得到正确的闲置矿车信息。不利于组织生产,为此研制了智能矿车计数装置。1 工作原理超声波是一种在传播介质中纵向传播的声波,其频率范围是2×10~4～2×10~(10)Hz。超声波以直线方式传播,频率越高,反射能力越强。反射物的尺寸只要大
At present, the number of mine transport system carts generally obtained by manual counting is a seemingly simple but troublesome thing, but often will have a double count or omission, so that mine managers can not get the correct information on idle mine. Is not conducive to the organization of production, thus developed a smart car counting device. 1 Principle of Operation Ultrasound is a kind of sound wave that propagates longitudinally in the propagation medium. Its frequency range is 2 × 10 ~ 4 ~ 2 × 10 ~ (10) Hz. Ultrasound wave propagation in a straight line, the higher the frequency, the stronger the reflectivity. The size of the reflector as long as large