Designing And Realizing Of Silt Sensor Based On DSP

Measurement of silt are very important on field of water, ocean and biology, Attention of measurement technology with high efficient and high precision have been extensively paid by experts of these area domestic and international. With excellent character of beam emission and direction when transmitting, supersonic is easy available, inexpensive, unrestricted by environment, and less difficult when measuring. It is comparatively easy to use supersonic technology to accomplish the technique of silt measurement. As a result, supersonic is widely used in a majority of area.Traditional adapted main principal of silt measurement is weighing and lighting. The primary choice of hardware is various of singlechips and the arithmetic of measurement is to gain come-and -go time through simple compare of signal, accordingly, this method is adapted in less demanding occasion. However, because of intrinsic disadvantage of singlechips and relative simple of arithmetic, this measurement's precision is low and the results are sensitive to environment, moreover, Different frequency supersonic is needed to different region and silt content, there are no common device for this region's fluid of silt.We analyzed the theory of supersonic sensor firstly, and concrete analyzed measurement method of silt and the principle of silt measurement, explicate characteristic of supersonic and silt of this region. We designed the software and hardware of silt sensor based on high performance 32bits DSP of TMS320F2812. Making many experiment in accord with silt of this region. The result indicate that the structure of this design based on DSP made the handware easy, and the frequency range are proper for local silt fluid, comparing with traditional method we improve the precision to some extent.