Method and apparatus for sensing boundary between materials

摘要

A method and apparatus for sensing boundaries between materials are provided. The method for sensing boundaries between materials comprises the steps of: fixing sensing modules in place; transmitting and receiving radio frequency signals; and analyzing radio frequency signals. The method enables real-time detection of positions of the boundaries between materials and handling and monitoring of changes in the boundary positions. The apparatus for sensing boundaries between materials comprises at least two sensing modules, or a radio frequency transmitting unit and a plurality of radio frequency signals receiving unit, or a plurality of radio frequency transmitting unit and a radio frequency signals receiving unit. The radio frequency signals are transmitted, received and analyzed by the radio frequency transmitting unit and the radio frequency signals receiving unit to determine the boundary positions and changes therein.

主权项

1. A method for sensing boundaries between materials, comprising the steps of:
applying sensing modules, including fixing at least two said sensing modules vertically to at least one material, at least a said sensing module being disposed in the said material, the sensing modules each comprising a radio frequency signals transmitting unit and a radio frequency signals receiving unit, wherein the radio frequency signals transmitting unit and the radio frequency signals receiving unit are located at different positions in the material and correspond horizontally to each other; transmitting and receiving radio frequency signals, including transmitting the radio frequency signals from each of the radio frequency signals transmitting units and receiving the radio frequency signals reflected from a block by a corresponding one of the radio frequency signals receiving units; and analyzing radio frequency signals, including analyzing amplitude or phase of the radio frequency signals received by each of the radio frequency signals receiving units, and sensing or monitoring a boundary position or changes of boundary position in said material or between two adjacent said materials.