CA2217150A1 - Deflection monitoring system - Google Patents

Deflection monitoring system

Info

Publication number
CA2217150A1
CA2217150A1 CA002217150A CA2217150A CA2217150A1 CA 2217150 A1 CA2217150 A1 CA 2217150A1 CA 002217150 A CA002217150 A CA 002217150A CA 2217150 A CA2217150 A CA 2217150A CA 2217150 A1 CA2217150 A1 CA 2217150A1
Authority
CA
Canada
Prior art keywords
laser
deflection
laser beam
path
receiver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002217150A
Other languages
French (fr)
Other versions
CA2217150C (en
Inventor
Jeffery N. Canty
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA002217150A priority Critical patent/CA2217150C/en
Priority claimed from PCT/US1995/004081 external-priority patent/WO1996031853A1/en
Publication of CA2217150A1 publication Critical patent/CA2217150A1/en
Application granted granted Critical
Publication of CA2217150C publication Critical patent/CA2217150C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Physics & Mathematics (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Electromagnetism (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

Deflections in support structures (30) due to external stress factors, can be detected by a series of laser beams (16). A laser (12) is positioned at the perimeter of the structure (30). The laser (12) generates a laser beam (16) along a path adjacent to the structure (30), and the beam (16) strikes a receiver (14) across from the laser (12). Solid target blocks (22) are positioned along the support structure (30).
When deflection occurs in the support structure (30), the targets (22) are concurrently displaced into the path of the laser beam (16). The receiver (14) registers the break in the laser beam (16) and activates an alarm. Each beam (16) is set to detect deflection in the structure (30) within predefined zones and the alarm indicates the zone in which the laser beam (16) path was broken by the deflection.
CA002217150A 1995-04-03 1995-04-03 Deflection monitoring system Expired - Fee Related CA2217150C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002217150A CA2217150C (en) 1995-04-03 1995-04-03 Deflection monitoring system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/US1995/004081 WO1996031853A1 (en) 1994-03-14 1995-04-03 Deflection monitoring system
CA002217150A CA2217150C (en) 1995-04-03 1995-04-03 Deflection monitoring system

Publications (2)

Publication Number Publication Date
CA2217150A1 true CA2217150A1 (en) 1996-10-10
CA2217150C CA2217150C (en) 2005-08-02

Family

ID=34888027

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002217150A Expired - Fee Related CA2217150C (en) 1995-04-03 1995-04-03 Deflection monitoring system

Country Status (1)

Country Link
CA (1) CA2217150C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11662200B2 (en) 2018-04-18 2023-05-30 Logicdata Electronic & Software Entwiclungs Gmbh Sensor assembly, actuator, control system, electrically adjustable piece of furniture and method for operating an electrically adjustable piece of furniture

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006052979A1 (en) * 2006-11-10 2008-05-21 Matysek, Jerzy Supporting construction unit's e.g. roof support, deformation monitoring device for building, has monitoring carrier to interrupt laser light radiation radiated from transmitter to receiver, in passage via which laser light radiation passes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11662200B2 (en) 2018-04-18 2023-05-30 Logicdata Electronic & Software Entwiclungs Gmbh Sensor assembly, actuator, control system, electrically adjustable piece of furniture and method for operating an electrically adjustable piece of furniture

Also Published As

Publication number Publication date
CA2217150C (en) 2005-08-02

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed