Structural monitoring system

• US 5,507,188 A
• Filed: 05/24/1995
• Issued: 04/16/1996
• Est. Priority Date: 06/08/1993
• Status: Expired due to Term

• Current Assignee: Karl J. Svaty Jr
• Original Assignee: Karl J. Svaty Jr
• Inventors: Svaty, Karl J. Jr.
• Primary Examiner(s): RAEVIS, ROBERT R
• Application Number:
  US08/449,673
• Time in Patent Office: 328 Days
• Field of Search: 73/1 DV, 73/786, 73/577, 73/579, 73/582, 340/870.02, 340/870.03
• US Class Current: 73/786
• CPC Class Codes: G01M 5/0033 by determining damage, crack or wear
• CPC Class Codes: G01M 5/0066 by exciting or detecting vibration or acceleration vibration testing of structures G01M7/00

Abstract

A method and device are provided for sensing and collecting structural deformation data on structures over time to permit structural integrity analysis of the structure and determination of structure life expectancy and need for repair or reconstruction of the structure.

Claims

1. An apparatus for detecting the deterioration in structural integrity of a bridge or a structural tower or building comprising:

a strain gauge for attachment to a structure for detecting frequency and amplitude data corresponding to linear expansion and contraction strain in the structure due to forces applied to said structure,

a detector for receiving said data from said strain gauge,

a computer processor in communication with said detector for reading and selecting frequency and amplitude data received from said strain gauge,

a means for receiving commands from a remote data processing location, and

a means for sending said data from the apparatus to said remote data processing location to permit remote location computation of the natural frequency of said structure for comparison with prior computations of the natural frequency of the structure.

2. The apparatus as claimed in claim 1 further comprising a battery to power said apparatus.

3. The apparatus as claimed in claim 2, wherein said battery is connected to a solar electricity generating panel for recharging said battery.

4. The apparatus as claimed in claim 1, wherein said means for sending data comprises a radio transmitter.

5. The apparatus as claimed in claim 1, wherein said means for receiving commands is a radio receiver.