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WO2019081102A1 - Procédé de détermination de l'humidité sur les parois d'une pièce et système de détermination de l'humidité sur les parois d'une pièce - Google Patents

Procédé de détermination de l'humidité sur les parois d'une pièce et système de détermination de l'humidité sur les parois d'une pièce

Info

Publication number
WO2019081102A1
WO2019081102A1 PCT/EP2018/073717 EP2018073717W WO2019081102A1 WO 2019081102 A1 WO2019081102 A1 WO 2019081102A1 EP 2018073717 W EP2018073717 W EP 2018073717W WO 2019081102 A1 WO2019081102 A1 WO 2019081102A1
Authority
WO
WIPO (PCT)
Prior art keywords
room
infrared image
air
walls
panoramic infrared
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/EP2018/073717
Other languages
German (de)
English (en)
Inventor
Arne Tiddens
Jacob ESTEVAM SCHMIEDT
Dhruvkumar Patel
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.)
Deutsches Zentrum fuer Luft und Raumfahrt eV
Original Assignee
Deutsches Zentrum fuer Luft und Raumfahrt eV
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 Deutsches Zentrum fuer Luft und Raumfahrt eV filed Critical Deutsches Zentrum fuer Luft und Raumfahrt eV
Publication of WO2019081102A1 publication Critical patent/WO2019081102A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
    • G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01W—METEOROLOGY
    • G01W1/00—Meteorology
    • G01W1/17—Catathermometers for measuring "cooling value" related either to weather conditions or to comfort of other human environment

Definitions

  • the present invention relates to a method for determining moisture on walls of a room and to a system for determining moisture on walls of a room.
  • the walls of evaluators are usually examined by means of moisture measurements.
  • samples of optically visible mold are usually taken and evaluated in the laboratory.
  • Such measuring methods are usually only carried out when moisture or mold can already be detected with the naked eye. At this time countermeasures are already expensive and there has already been a health burden on people in the appropriate rooms.
  • Further damage prevention measures include the use of, for example, intelligent shut-off valves or water detectors.
  • micro-leaks can only be recognized by a very experienced expert. However, the measurements made by the appraiser are often error-prone, so that microleakages are sometimes not recognized.
  • the method according to the invention is defined by the features of claim 1.
  • the panoramic infrared image including at least one horizontally extending 360 ° panorama
  • the dew point analysis can be performed at several points of the walls, so that no special knowledge is necessary, at which point of the walls in the room a single measurement is performed, as done in the prior art by the valuer.
  • the method according to the invention thus greatly simplifies the determination of moisture on walls of the room.
  • the 360 ° panorama image can be composed of individual infrared images. There is also the possibility that the 360 ° panorama image is taken, for example, by pivoting an infrared camera.
  • the panoramic infrared image may also include a vertically extending 360 ° panorama in addition to the horizontally extending 360 ° panorama, such that, for example, the panoramic infrared image is a full-field image.
  • the method according to the invention can provide, for example, that the determined moisture is evaluated in a further step and used to determine the risk of moisture or mildew of areas of the walls.
  • the process can be carried out partially or fully automatically, this can also be carried out by a layman, so that can be dispensed with the consultation of an expert. As a result, the method according to the invention can be carried out inexpensively.
  • the dew point analyzes are carried out in a locally resolved manner, that is, that they are carried out not only at a plurality of individual points, but over the entire area of the walls.
  • a spatially resolved wall temperature can be determined from the panoramic infrared image, it is possible in a simple manner to carry out the dew point analyzes also locally resolved, so that the moisture due to condensation and room air on the walls are also obtained in a spatial resolution can.
  • the inventive method provides that temperature jumps are determined on the walls in order to determine therefrom on any penetration of moisture into the walls, which is done by, for example, a budding pipe break.
  • the previously performed dew point analysis helps to distinguish the areas of moisture of the walls, which are caused by condensation of the room air, from moisture, which arises, for example, from microleakages on pipes in the wall.
  • moisture or mold risk of areas of the walls can thus be detected by the method according to the invention, if moisture passes, for example, by a budding pipe break in the wall.
  • the areas of the walls that have higher humidity due to micro-leaks of a pipe may have a higher or a lower temperature than the rest of the wall. This can be caused for example by cold or hot water pipes.
  • the method according to the invention can provide that provided geometric data of the space are used in the correction of the deviations due to reflections during the evaluation of the panoramic infrared image.
  • the geometry data it is possible in a particularly advantageous manner to detect deviations due to reflections in the panoramic infrared image. len.
  • the geometry data of the room can be determined, for example, via the panoramic infrared image.
  • the geometric data of the room are determined by measuring the room.
  • the geometry data can be derived from images taken with a visual camera.
  • the method according to the invention can also provide that the steps
  • the method according to the invention can thus provide that a long-term measurement takes place. By comparison with the air temperature over a longer period of time is thus possible to determine the leakage is present on a cold water pipe or on a hot heating pipe. Furthermore, it can be determined by means of the long-term measurement to what extent the water emerging from the leak propagates in order to be able to determine the extent of the damage.
  • the method according to the invention determines the geometry of the room, this also facilitates the determination and the extent of any repair to be carried out. turbul. Also measures for pipe burst prevention can be derived in an advantageous manner.
  • the data recorded by means of the method according to the invention can also be stored for generating statistics, so that, for example, a pipe burst probability can be derived from the determined data.
  • the inventive method further provides that at any point the room air is examined at least with regard to gases and / or mold spores.
  • a gas sensor system such as an electronic nose.
  • the examination of the room air for mold spores provides indications as to whether mold that was already invisible has formed.
  • the gas sensor system can analyze volatile components in the air.
  • the examination of the room air with respect to gases can determine the composition of the air and thus, for example, give information about the ventilation behavior of the occupants or users of the room. These allow, for example, an exclusion of causes of the measured moisture due to poor ventilation behavior. It also gives indications of possible measures to reduce the risk of mold.
  • the method according to the invention can provide that the degree of turbulence of the air is measured at the arbitrary point.
  • the degree of turbulence in the air can also provide indications of possible measures to reduce the risk of mold. Furthermore, it can be provided that a turbulence simulation for the room is carried out.
  • the inventive method can advantageously provide that the air exchange rate of the room is measured. This can be done for example via a Tracerdgasstation. By determining the air replacement rate of the room, there may also be indications of possible measures to reduce the risk of mold. Also, the determination of the air exchange rate of the room allows the exclusion of the cause of the measured humidity due to insufficient air exchange in the room.
  • the method according to the invention can thus enable a higher accuracy in the determination of moisture by further measurements.
  • moisture which arises on the walls due to poor ventilation behavior can be determined by means of repeated measurements, and thus a long-term measurement.
  • a change in a possible leak size can be observed on a pipe over the long-term measurement, whereby a need for action can be derived.
  • the probability of a pipe break can also be automatically calculated, since it can be determined whether a microleakage found is in a position typical for pipes.
  • the inventive system for determining moisture on walls of a room has an air humidity sensor, a temperature sensor, at least one preferably in at least one direction, preferably 360 ° pivotable infrared camera for creating a panoramic infrared image, an image processing device for evaluating the panoramic infrared image and determining a spatially resolved wall temperature from the panoramic infrared image and for detecting reflections in the panoramic infrared image, and an analysis device for analyzing a dew point at several points of the walls with the measured humidity, the measured air temperature and the spatially resolved wall temperature determined from the panoramic infrared image for determining moisture due to condensation of room air at the plurality of points.
  • the panoramic infrared image can also be created with multiple infrared cameras, which are preferably pivotable or facing in different directions.
  • the individual components of the system can work automatically, so that the system can be operated by a layman without prior knowledge in an advantageous manner.
  • the infrared camera can for example have a drive, so that the panoramic infrared image can also be created automatically and without further action by a user.
  • the inclusion of a panoramic infrared image the site of the system in space is almost arbitrary and it is also not to pay attention to precise alignment.
  • the infrared camera can also be pivoted in other directions, for example in a vertical plane, so that full-spectrum images are possible.
  • the image processing device of the system according to the invention preferably has a geometry determination device for determining the geometric data of the room from the panoramic infrared image.
  • the system according to the invention can advantageously determine the geometry of the room in which the system is used from the recorded data.
  • the geometry data deviations in the panoramic infrared image, which is caused by reflections, can advantageously be determined and corrected, for example, in accordance with the method according to the invention.
  • the system according to the invention can also have a distance measuring device. Geometry data of the room can also be determined by means of the distance measuring device.
  • this has a gas sensor system, preferably an electronic nose.
  • the gas sensor system for example, the composition of the air in the room can be determined, about which information about the ventilation behavior of the user of the room can be obtained. This provides clues to possible measures to reduce the risk of mold or may improve the determination of moisture on walls by excluding poor ventilation behavior as the cause of measured moisture can.
  • the gas sensor system in the form of an electronic nose can be used, for example, for the detection of mold spores, so that invisible mold can be detected or a health burden for users of the room can be estimated.
  • the system of the invention may also include an air turbulence sensor.
  • an air turbulence sensor may also be provided.
  • a device for air turbulence simulation can also be provided, so that the air turbulence can be simulated in the entire space.
  • the system according to the invention preferably has a leakage sensor system for determining leaks in the room. This can be used to determine the air exchange rate of the room, which can also provide indications of a possible measure to reduce the risk of mold or give indications of a possible cause of the measured moisture.
  • the leakage sensor system can operate, for example, by means of a tracer gas.
  • a tracer gas For example, a mobile Trazergasabgeabevoriques be provided and a Tracergassensor be arranged in the immediate vicinity of the camera.
  • the mobile tracer dispenser can be used outside the room with the tracer gas sensor sensing the tracer gas dispensed.
  • the invention further provides for the use of the system according to the invention for carrying out the method according to the invention.
  • the system according to the invention and the method according to the invention can be used in a particularly advantageous manner for a mold hazard determination and / or for a pipe burst prevention or pipe fracture determination.
  • long-term measurements are possible with the system according to the invention, since the system can be carried out without an expert.
  • pipe fracture probabilities are determined, for example, a statistical evaluation, quantitative Leck handlednbetician at pipe breaks and also the identification of the type of leaking pipe by a correlation of the temperature of the escaping water with the Air temperature or humidity. It can be determined, for example, whether it is heating water, service water or wastewater.
  • the long-term measurement can be used to observe how and how heat propagates from the pipe to the surface of the wall, as a result of which information about the depth of the pipe or the structure in the vicinity of the pipe can be determined.
  • a metal rod installed in the wall conducts heat more quickly, so that this can be read off from the wall temperature measured on the surface.
  • thermal insulation conducts the heat more slowly so that information about it can also be obtained.
  • the sole figure shows a system 1 for determining moisture on walls of a room in a schematic representation.
  • the system 1 according to the invention comprises an air humidity sensor 2 for determining the humidity in the room and a temperature sensor 4 for determining the temperature of the air in the room.
  • the system has an at least in one direction by 360 ° pivotable infrared camera 3.
  • the infrared camera 3 is used to create a panoramic infrared image.
  • the infrared camera 3 is arranged on a housing 5.
  • the infrared camera 3 has a drive 7, via which an automatic pivoting of the infrared camera can take place. In this way, panoramic infrared images of the room can be created in a particularly advantageous manner.
  • an image processing device 9 which evaluates the panoramic infrared image.
  • a spatially resolved wall temperature is determined from the panoramic infrared image.
  • the image processing device 9 can recognize reflections on the walls, which are caused by objects in the room or an opposite wall, and correct them during the evaluation.
  • the image processing device 9 can also have a geometry determination device, by means of which geometric data of the room can be determined from the panoramic infrared image. These can be solved for example in the detection of reflections.
  • an analysis device 10 for analyzing a dew point at several points of the walls with the measured air humidity, the measured air temperature and the spatially resolved wall temperature determined from the panoramic infrared image is also arranged. By means of the analysis device 10 for analyzing the dew point, the determination of moisture due to condensation of room air on the wall surfaces of the room can be determined.
  • the image processing device 9 and the analysis device 10 may be formed, for example, by a common computer system.
  • the system 1 according to the invention may further comprise a gas sensor system 11, for example an electronic nose.
  • a gas sensor system 11 for example an electronic nose.
  • the composition of the air in the room and thus information regarding the ventilation behavior of the user of the room can be determined via the gas sensor system 11. Mold spores can also be detected by means of the electronic nose.
  • the health risk of users of the room can thus be determined. It is also possible to determine via the ventilation behavior whether, for example, the moisture determined from the panoramic infrared image on one wall of the room may possibly be due to poor ventilation behavior.
  • the system 1 according to the invention may further comprise an air turbulence sensor 13. This allows the degree of turbulence of the air in the room to be determined. Also, values for an air turbulence simulation can be obtained. The level of turbulence in the air can provide indications of possible measures to reduce the risk of mold.
  • the system 1 according to the invention also has a leakage sensor system 15.
  • the leak sensor system 15 consists of a tracer gas sensor 17 and a mobile tracer gas dispenser 19. Tracer gas can be dispensed outside of the room via the mobile tracer gas dispenser 19. Tracer gas can be detected by means of the tracer gas sensor 17, which is placed in the housing 5. about which, for example, the air exchange rate of the room can be determined. This can provide indications of possible measures to reduce the risk of mold to be obtained. It can also be determined whether, for example, due to a low air exchange rate of the room, moisture, which is determined from the panoramic infrared image, may have arisen.
  • the gas sensor system 11, the air turbulence sensor 13 and the Tracergassenors 17 are shown only schematically arranged on the housing 5 in the figure.
  • the system 1 comprises a computing device (not shown) or connected to a computing device by means of which calculations for determining the moisture are carried out.
  • the method according to the invention can be carried out in a particularly advantageous manner.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

La présente invention concerne un procédé de détermination de l'humidité sur les parois d'une pièce, comprenant les étapes suivantes : mesure de l'humidité de l'air dans la pièce, mesure de la température de l'air dans la pièce, création d'au moins une image infrarouge panoramique de la pièce à partir d'un point quelconque dans la pièce, l'image infrarouge panoramique comprenant au moins un panorama à 360° s'étendant horizontalement, évaluation de l'image infrarouge panoramique et détermination d'une température de paroi à résolution spatiale à partir de l'image infrarouge panoramique, des écarts dus à des réflexions étant corrigés, et exécution d'analyses de point de rosée à plusieurs points des parois au moyen de l'humidité mesurée de l'air, de la température mesurée de l'air ainsi que de la température de paroi à résolution spatiale déterminée à partir de l'image infrarouge panoramique afin de déterminer l'humidité due à la condensation de l'air ambiant aux points multiples des parois.
PCT/EP2018/073717 2017-10-25 2018-09-04 Procédé de détermination de l'humidité sur les parois d'une pièce et système de détermination de l'humidité sur les parois d'une pièce Ceased WO2019081102A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017219140.6A DE102017219140B4 (de) 2017-10-25 2017-10-25 Verfahren zur Bestimmung von Feuchtigkeit an Wänden eines Raumes
DE102017219140.6 2017-10-25

Publications (1)

Publication Number Publication Date
WO2019081102A1 true WO2019081102A1 (fr) 2019-05-02

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ID=63556294

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/073717 Ceased WO2019081102A1 (fr) 2017-10-25 2018-09-04 Procédé de détermination de l'humidité sur les parois d'une pièce et système de détermination de l'humidité sur les parois d'une pièce

Country Status (2)

Country Link
DE (1) DE102017219140B4 (fr)
WO (1) WO2019081102A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK202430503A1 (en) * 2023-09-01 2025-03-06 Biodry Aps A method for identifying one or more moisture types and their corresponding causes in a damp wall

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01224654A (ja) * 1988-03-04 1989-09-07 Jeol Ltd 隔壁表面の結露に関する情報の取得方法
EP1678485A1 (fr) * 2003-10-28 2006-07-12 Flir Systems AB Procede, utilisation et systeme de camera infrarouge permettant de determiner le risque de condensation
WO2007036353A2 (fr) * 2005-09-29 2007-04-05 Testo Ag Appareil pour determiner l'humidite de surface d'un objet de mesure
WO2007132009A2 (fr) * 2006-05-15 2007-11-22 Consiglio Nazionale Delle Ricerche Procédé et appareil pour la détection thermographique des conditions thermohygrométriques de surfaces étendues
US20110267428A1 (en) * 2010-04-30 2011-11-03 General Electric Company System and method for mapping a two-dimensional image onto a three-dimensional model
DE102010052327A1 (de) * 2010-11-25 2012-05-31 Testo Ag Verfahren zur Bestimmung eines Kondensationsrisikos mit einer Wärmebildkamera und korrespondierende Wärmebildkamera
WO2016176370A1 (fr) * 2015-04-27 2016-11-03 Flir Systems, Inc. Dispositif de mesure de l'humidité présentant des capacités d'imagerie thermique et procédés associés

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01224654A (ja) * 1988-03-04 1989-09-07 Jeol Ltd 隔壁表面の結露に関する情報の取得方法
EP1678485A1 (fr) * 2003-10-28 2006-07-12 Flir Systems AB Procede, utilisation et systeme de camera infrarouge permettant de determiner le risque de condensation
WO2007036353A2 (fr) * 2005-09-29 2007-04-05 Testo Ag Appareil pour determiner l'humidite de surface d'un objet de mesure
WO2007132009A2 (fr) * 2006-05-15 2007-11-22 Consiglio Nazionale Delle Ricerche Procédé et appareil pour la détection thermographique des conditions thermohygrométriques de surfaces étendues
US20110267428A1 (en) * 2010-04-30 2011-11-03 General Electric Company System and method for mapping a two-dimensional image onto a three-dimensional model
DE102010052327A1 (de) * 2010-11-25 2012-05-31 Testo Ag Verfahren zur Bestimmung eines Kondensationsrisikos mit einer Wärmebildkamera und korrespondierende Wärmebildkamera
WO2016176370A1 (fr) * 2015-04-27 2016-11-03 Flir Systems, Inc. Dispositif de mesure de l'humidité présentant des capacités d'imagerie thermique et procédés associés

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK202430503A1 (en) * 2023-09-01 2025-03-06 Biodry Aps A method for identifying one or more moisture types and their corresponding causes in a damp wall

Also Published As

Publication number Publication date
DE102017219140A1 (de) 2019-04-25
DE102017219140B4 (de) 2023-05-25

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