[go: up one dir, main page]

WO2012098279A1 - Système sans fil à faible coût à localisation automatique fondée sur le traitement d'images pour des essais dynamiques d'infrastructures - Google Patents

Système sans fil à faible coût à localisation automatique fondée sur le traitement d'images pour des essais dynamiques d'infrastructures Download PDF

Info

Publication number
WO2012098279A1
WO2012098279A1 PCT/ES2012/070022 ES2012070022W WO2012098279A1 WO 2012098279 A1 WO2012098279 A1 WO 2012098279A1 ES 2012070022 W ES2012070022 W ES 2012070022W WO 2012098279 A1 WO2012098279 A1 WO 2012098279A1
Authority
WO
WIPO (PCT)
Prior art keywords
wireless
sensors
image processing
location
sensor
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.)
Ceased
Application number
PCT/ES2012/070022
Other languages
English (en)
Spanish (es)
Inventor
Alvaro Araujo Pinto
Jaime Garcia Palacios
Octavio Nieto-Taladriz Garcia
Avelino Sanmartin Quiroga
Guido De Roeck
Roberto Andres Ortega Aguilera
Javier Blesa Martinez
Francisco Tirado Andres
Elena Romero Perales
Markus LUTZ ULRICH
Jose Manuel Moya Fernandez
Jose Alberto De Dios Sanchez
Juan Mariano De Goyeneche Y Vazquez De Seyas
Zorana Bankovic
Daniel Villanueva Gonzalez
Pedro Jose Malagon Marzo
Juan Carlos Vallejo Lopez
Marina Zapater Sancho
David Fraga Aydillo
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.)
Katholieke Universiteit Leuven
MANTENIMIENTO DE INFRAESTRUCTURAS SA
UXAMA INGENIERIA Y ARQUITECTURA SLUP
Universidad Politecnica de Madrid
FCC Construction SA
Original Assignee
Katholieke Universiteit Leuven
MANTENIMIENTO DE INFRAESTRUCTURAS SA
UXAMA INGENIERIA Y ARQUITECTURA SLUP
Universidad Politecnica de Madrid
FCC Construction SA
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 Katholieke Universiteit Leuven, MANTENIMIENTO DE INFRAESTRUCTURAS SA, UXAMA INGENIERIA Y ARQUITECTURA SLUP, Universidad Politecnica de Madrid, FCC Construction SA filed Critical Katholieke Universiteit Leuven
Publication of WO2012098279A1 publication Critical patent/WO2012098279A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
    • G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0008—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of bridges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0033—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining damage, crack or wear
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0091—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by using electromagnetic excitation or detection

Definitions

  • the present invention falls within the field of structure monitoring.
  • the developed low-cost wireless system allows the location of the structure monitoring sensors with low cost cameras and subsequent image processing to be located in relation to known reference points.
  • Structural health monitoring techniques are gaining acceptance in the infrastructure sector as a reliable and economical way to alert engineers in the initial phases of defect formation, and to warn them as quickly as possible about the need to carry out Timely maintenance work.
  • Structural health monitoring has been in operation since the end of the 19th century, when road workers listened to its acoustic emissions in order to detect faults or cracks.
  • These visual or auditory recognition techniques are the most used alternatives when the technology is lacking to carry out a more adequate study. Thanks to the computational advance of the last 30 years, several techniques based on deeper physical principles and analyzes have been developed, with respect to those performed in earlier times.
  • a method of assessing the deterioration state of a bridge must be able to assess the loss of stiffness of the structure over time.
  • the inspection by dynamic tests of the structure under uncontrolled environmental loads provides a valuable and easy-to-implement tool, since it does not disturb the service conditions of the same, it is not necessary to cut traffic for the performance of the test.
  • Dynamic inspection has distinctive advantages compared to other methods, such as periodic visual checks, as it allows the detection of structural damage that is not visible or is not accessible to the inspection.
  • the dynamic response of a bridge that is recorded in a dynamic test indicates globally the possible existence of damage, in the case of a reduction in stiffness and therefore a modification of its modal characteristics (frequencies and modes of vibration mainly).
  • the measures located in certain sections do not generally ensure the appearance of structural deterioration.
  • Vibration inspection of civil engineering structures has gained great interest over the past decade, due to its relative ease of instrumentation and to the development of new powerful identification techniques, capable of extracting the modal properties of the structure from the measurements of accelerations, displacements and / or deformations. Special attention is being given to techniques that make use of operational data (tests under service loads).
  • the systems typically used are based on wired sensors that are registered in an acquisition team to subsequently perform an analysis of the data obtained, according to the following scheme:
  • Document US2008 / 0307025 describes a procedure by which the relative location of the nodes of a wireless network is calculated based on the power received by the rest of the nodes of the network, using an algorithm to avoid reflections.
  • US5913820 describes a process by which the location of electric and magnetic field sensors is measured based on the response of induction coils.
  • the object of the invention is the creation of a low-cost wireless system with automatic location of the relative position of the sensors, allowing dynamic infrastructure tests to be carried out based on image processing, solving the aforementioned drawbacks, also providing other Additional advantages that will be apparent from the description that follows.
  • the precise placement of the structure monitoring sensors is avoided since, due to the automatic location based on the image processing, the exact point at which each sensor is located will be known.
  • the camera-equipped wireless sensors capture the images of the neighboring sensors that are in your field of vision. By knowing the actual distance between the points detected in the images, the distance at which the sensors are located can be obtained by treating them. If it is necessary to obtain absolute coordinates instead of relative ones, only a wireless sensor should be located at a known point, taking the rest of the distances as a reference from that sensor. All the data related to the location must be included in the data necessary for the dynamic test calculations, without being prefixed in advance, part that entails a great effort and that has not been resolved until now.
  • the system consists of a series of wireless sensors connected to a data acquisition module, a wireless module responsible for synchronization between sensors, a wireless module responsible for communication between sensors, a main microcontroller that manages the measurement and communication with the rest of the system and three diodes of different colors that allow the optical location of the sensor. Also included is an image-based location system implemented by a motorized camera that allows, through image processing, to obtain the relative position of the sensors relative to a known reference system.
  • the image treatment is based on the detection of three points of the modules that, being of different color, allow by means of algorithms of treatment of images based on triangulation, to detect the relative position with a resolution sufficient for the purpose that is pursued.
  • Each of the wireless sensors provided with the image-based location system captures the images of the rest of the wireless sensors in your field of vision. In these images the three luminous points (diodes) of different colors (black, white and gray in the figure) are detected. Since the relative distance between the luminous points of each wireless sensor is known (di, d 2 , d 3 ), by triangulation it is possible to obtain the relative distance of the device that is capturing the images with respect to the sensor it is analyzing. With the complete information of the relative positions of all the wireless sensors a complete scheme of the monitoring of the structure to be carried out can be obtained.
  • the one that can be considered with the greatest scientific contribution is the incorporation of a positioning system to the acquisition team, in this way, in addition to the acceleration data of each measurement point at which positions a wireless sensor, the invention also allows to know the relative position of each of the sensors with respect to a reference system.
  • an automatic positioning system makes it possible to increase the number of sensors used, thus avoiding the carrying out of the previous study, by replacing optimal positioning, by positioning with criteria in a greater number of points. Additionally, the invention avoids the cumbersome task of previously marking the coordinates with chalk since the positioning with criteria can be carried out with the naked eye by an experienced operator.
  • the sensor coordinate file is obtained automatically during the test, which allows the structural identification to be carried out in situ, in addition to avoiding the possible human error in the writing of the location file data. All this constitutes a remarkable improvement when carrying out the test, with a significant cost reduction, mainly in time and labor required.
  • Figure 1 Shows a diagram of the simple wireless system for dynamic infrastructure tests in accordance with the present invention.
  • Figure 2.- Shows a diagram of a typical arrangement of a measure.
  • Figure 3. Represents an image obtaining scheme by which it is possible to obtain the relative location of the sensors.
  • a preferred but non-limiting embodiment of the invention can be observed therein which consists of a plurality of simple wireless sensors (1) and a series of wireless sensors equipped with an image-based location system (2) all distributed throughout the structure to be monitored, so that each wireless sensor (1) is within the field of vision of at least one wireless sensor equipped with an image based location system (2).
  • the relative location of the wireless sensors within the system is allowed, at the time of deployment of the wireless sensor network its location in specific positions is not required, but distributed, with criteria according to the pathology to be analyzed, by the area in which the test is desired.
  • wireless reference sensor (3) there is at least one wireless reference sensor (3) whose position is preset in the system and invariable if more than one measurement is required with the rest of the wireless sensors (1 and 2) arranged in different locations for a same test, which will be distributed according to the needs of the structure, increasing the density in case more precision is required in the monitoring.
  • One of the wireless sensors (4) will serve as a wireless link between the rest of the system's wireless sensors and a server computer (5) that will allow storing and visualizing the test results as soon as it is completed, evaluating the need to repeat another type of test.
  • the order to start the test is issued and via the wireless link sensor ( 4) a synchronization message is sent to all wireless sensors in the network (1, 2, 3) via a wireless transceiver designed for this purpose.
  • This message is received by the local processing subsystem of each wireless sensor, initiating the measurement, through the acquisition modules that receive the signals generated by their accelerometers. All this, according to the parameters that have been configured on the server computer (duration of the measurement, sampling frequency, number of samples, etc.).
  • the wireless sensors equipped with an image-based location system analyze all the images obtained from the wireless sensors that are around them, partially processing them in the local processing subsystem and obtaining the relative positions of the same.
  • the system analyzes the images obtained from the wireless sensors in your field of vision through the three LEDs (6, 7, 8) of different colors, arranged in each of them and taking into account that The actual distance (d1, d2, d3) between these points and the resolution of the camera are known, which makes it possible to obtain, by means of image processing and triangulation, the relative arrangement of each wireless sensor with respect to which the images are being captured.
  • each of the wireless sensors (1, 2, 3) sends through its wireless transceiver for data exchange, to the server computer (5) through the wireless link sensor (4) all the information of the samples obtained and the local processing of the images, allowing the analysis of said information (signal samples and location) of the different wireless sensors, interpreting the result.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)

Abstract

L'invention concerne un système sans fil à faible coût à localisation automatique fondée sur le traitement d'images pour des essais dynamiques d'infrastructures qui évite la mise en place précise de capteurs au moyen de dispositifs sans fil pourvus de caméras à faible coût contrôlées. Le traitement d'images permet d'obtenir la position relative des capteurs par rapport à un point connu.
PCT/ES2012/070022 2011-01-20 2012-01-16 Système sans fil à faible coût à localisation automatique fondée sur le traitement d'images pour des essais dynamiques d'infrastructures Ceased WO2012098279A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201100052A ES2382293B1 (es) 2011-01-20 2011-01-20 Sistema inalámbrico de bajo coste con localización automática basada en el tratamiento de imágenes para ensayos dinámicos de infraestructuras.
ESP201100052 2011-01-20

Publications (1)

Publication Number Publication Date
WO2012098279A1 true WO2012098279A1 (fr) 2012-07-26

Family

ID=46086161

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2012/070022 Ceased WO2012098279A1 (fr) 2011-01-20 2012-01-16 Système sans fil à faible coût à localisation automatique fondée sur le traitement d'images pour des essais dynamiques d'infrastructures

Country Status (2)

Country Link
ES (1) ES2382293B1 (fr)
WO (1) WO2012098279A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11151728B2 (en) 2019-12-20 2021-10-19 Ship And Ocean Industries R&D Center Structure monitoring system and method
TWI754870B (zh) * 2019-12-20 2022-02-11 財團法人船舶暨海洋產業研發中心 結構監測系統及方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003085360A1 (fr) * 2002-04-03 2003-10-16 Sri International Capteurs servant a controler l'etat de sante d'une structure
WO2009063523A2 (fr) * 2007-11-16 2009-05-22 Filippo Bastianini Dispositif pour surveiller l'état de santé de structures
CN101778405A (zh) * 2010-01-05 2010-07-14 武汉理工大学 结构健康监测的无线传感器网络同步采集方法及系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003085360A1 (fr) * 2002-04-03 2003-10-16 Sri International Capteurs servant a controler l'etat de sante d'une structure
WO2009063523A2 (fr) * 2007-11-16 2009-05-22 Filippo Bastianini Dispositif pour surveiller l'état de santé de structures
CN101778405A (zh) * 2010-01-05 2010-07-14 武汉理工大学 结构健康监测的无线传感器网络同步采集方法及系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
J-H WENG ET AL.: "Output-only modal identification of a cable-stayed bridge using wireless monitoring systems", ENGINEERING STRUCTURES, vol. 30, 15 January 2008 (2008-01-15), pages 1820 - 1830, XP022683409, DOI: doi:10.1016/j.engstruct.2007.12.002 *

Also Published As

Publication number Publication date
ES2382293A1 (es) 2012-06-07
ES2382293B1 (es) 2013-05-06

Similar Documents

Publication Publication Date Title
ES2469851T3 (es) Indicador de deformaciones y sistema de localización espacial de dichos indicadores
Niezrecki et al. Digital image correlation techniques for NDE and SHM
JP6472894B2 (ja) メンテナンス計画立案支援システム、方法およびプログラム
CN108027301B (zh) 损伤信息提取装置、损伤信息提取方法及损伤信息提取程序
ES2442925T3 (es) Método para inspeccionar componentes de una turbina eólica
JP6284240B2 (ja) 構造物情報提供システム
US20140132723A1 (en) Methods for calibrating a digital photographic image of utility structures
Soni et al. Structural monitoring for the rail industry using conventional survey, laser scanning and photogrammetry
CN107328783A (zh) 一种基于无人机的桥梁智能检测系统
CN106664775B (zh) 监测柱的结构牢靠性状况的方法及装置
Alamdari et al. Non-contact structural health monitoring of a cable-stayed bridge: Case study
US11093877B2 (en) Inspection plan drafting support system, method, and program
Belloni et al. Tack project: Tunnel and bridge automatic crack monitoring using deep learning and photogrammetry
CN203824548U (zh) 一种桥梁结构砼表面观测区面积测定仪
CN108776040B (zh) 桥梁安全巡检系统及诊断方法
JP6472893B2 (ja) 補修計画立案支援システム、方法およびプログラム
Obiechefu et al. Damage detection techniques for structural health monitoring of bridges from computer vision derived parameters
WO2012098279A1 (fr) Système sans fil à faible coût à localisation automatique fondée sur le traitement d'images pour des essais dynamiques d'infrastructures
KR20210008661A (ko) 화상데이터 내의 척도마커의 추적을 통한 구조물 표면의 균열 감시 방법
CN106017423B (zh) 既有建筑幕墙分隔定位检测系统及检测方法
ES2795374T3 (es) Método para la detección automática y el posterior procesamiento y almacenamiento de uno o más parámetros ambientales georreferenciados que se refieren a una vía férrea de referencia
JP2021128617A (ja) 検査システム、検査方法及び構造物
KR100784296B1 (ko) 교량 결함 위치 확인 방법
Dhanani et al. Demonstration of LiDAR on accurate surface damage measurement: a case of transportation infrastructure
ES2722573B2 (es) Dispositivo óptico de comprobación de la hinca de un pilote

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12736220

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12736220

Country of ref document: EP

Kind code of ref document: A1