MAGNETIC DEVICE FOR MEASURING SCOUR DEPTH

摘要

The present invention provides a magnetic device for measuring scour depth. The magnetic device comprises a plurality of scour detecting units which are buried in the sediment and disposed at intervals along the direction perpendicular to the surface of water. Each scour detecting unit comprises: one or more magnetic sources; and one or more magnetic detecting elements configured to be apart from the magnetic source for a predetermined distance. The magnetic detecting element is utilized to detect the magnetic field generated by the magnetic source. The scour depth and the position where scour occurs are determined according to electronic signals corresponding to the magnetic strength detected by the respective magnetic detecting elements of the scour detecting units. The magnetic device of the present invention has many advantages including low cost, high efficiency, and such a device is easily deployed.

主权项

1. A magnetic device for measuring scour depth, said magnetic device being buried in a sediment that settles on a stream bed, and being used to measure a depth value indicating a depth that the sediment is scoured away by water flow, said magnetic device comprising:
a plurality of scour detecting units, buried in the sediment and disposed at intervals along a direction perpendicular to a surface of water, in which each scour detecting unit comprises: one or more magnetic sources; and one or more magnetic detecting elements, configured to be apart from the magnetic source for a predetermined distance, the magnetic detecting element being utilized to detect a magnetic field generated by the magnetic source, wherein the magnetic detecting element detects a change of magnetic strength when the sediment at a position of the magnetic source and the magnetic detecting element is scoured away and the water flow changes a relative distance between the magnetic source and the magnetic detecting element, and wherein the scour depth and a location where scour occurs are determined according to electronic signals corresponding to the magnetic strength detected by the respective magnetic detecting elements of the scour detecting units.