Patent ID: 8352213

Claim:
A probe monitoring system for riverbed elevation monitoring at bridge piers comprising: a housing fixed on a bridge pier, a measuring rod disposed on the housing and having a plurality of scales, a moving member mounted in the housing and driving the measuring rod to move, a control module arranged in the housing and coupled to the moving member for control of the moving member that drives the measuring rod, a photographic unit that is set in the housing, taking pictures of the measuring rod and generating at least one image, and a sensing unit disposed on a bottom of the measuring rod; wherein the control module controls movement of the measuring rod; once the sensing unit approaches a riverbed under the water, the sensing unit sends a sensing signal to the control module so as to control the moving member, stopping the moving member from moving the measuring rod and also to control the photographic unit take pictures of the measuring rod and generating at least one image; elevation of the riverbed is obtained according to the image and the elevation of the riverbed is sent to a remote monitor unit.