DE29709604U1 - Measuring device for measuring the temperature and electrical conductivity depending on the depth of penetration in plants and wood - Google Patents
Measuring device for measuring the temperature and electrical conductivity depending on the depth of penetration in plants and woodInfo
- Publication number
- DE29709604U1 DE29709604U1 DE29709604U DE29709604U DE29709604U1 DE 29709604 U1 DE29709604 U1 DE 29709604U1 DE 29709604 U DE29709604 U DE 29709604U DE 29709604 U DE29709604 U DE 29709604U DE 29709604 U1 DE29709604 U1 DE 29709604U1
- Authority
- DE
- Germany
- Prior art keywords
- measuring
- means according
- measuring tip
- temperature
- depth
- 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.)
- Expired - Lifetime
Links
- 239000002023 wood Substances 0.000 title claims description 7
- 230000035515 penetration Effects 0.000 title claims description 4
- 238000012360 testing method Methods 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/46—Wood
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
- G01N27/07—Construction of measuring vessels; Electrodes therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0098—Plants or trees
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Wood Science & Technology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Electrochemistry (AREA)
- Botany (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
Im folgenden wird ein Gerät beschrieben, das unter Berücksichtung der Temperatur und der Messposition zum Messen der elektrischen Leitfähigkeit in einem Prüfkörper dient. Im Vergleich zu den bekannten Geräten, die für ähnliche Zwecke seit längerem eingesetzt werden, zeichnet sich das hier beschriebene Gerät durch nachfolgend aufgeführte Punkte besonders aus:The following describes a device that is used to measure the electrical conductivity in a test specimen, taking into account the temperature and the measuring position. In comparison to the known devices that have been used for similar purposes for a long time, the device described here is particularly distinguished by the following points:
Das Gerät misst gleichzeitig die elektrische Leitfähigkeit und Temperatur des Prüfkörpers sowie die Position der Messstelle im Prüfkörper.The device simultaneously measures the electrical conductivity and temperature of the test specimen as well as the position of the measuring point in the test specimen.
Die Messung erfolgt innerhalb weniger Millimeter auf sehr eng begrenztem Raum, wodurch sich eine grosse Genauigkeit und eine hohe räumlich Auflösung ergibt.The measurement is carried out within a few millimeters in a very confined space, resulting in great accuracy and high spatial resolution.
Ein Messvorgang umfasst mehrere Messungen in verschiedener Eindringtiefe im Prüfkörper, wodurch sich entlang einer Achse ein Messprofil ergibt.A measuring process comprises several measurements at different penetration depths in the test specimen, resulting in a measurement profile along an axis.
Die Materialzerstörung im Prüfkörper ist minimal.The material destruction in the test specimen is minimal.
Das Gerät bedarf keiner festen Montage am Prüfkörper durch Haltegurten oder andere Hilfsmittel.The device does not require any permanent mounting on the test specimen using straps or other aids.
Der messende Teil des Geräts lässt sich ohne Einsatz weiterer Hilfsmittel wie Bohrgeräte in den Prüfkörper einbringen.The measuring part of the device can be inserted into the test specimen without the use of additional tools such as drilling equipment.
Das Gerät lässt sich von einer Person bedienen.The device can be operated by one person.
Das beschriebene Gerät besteht aus einer speziell geformten Messspitze 1), in der sich ein Temperatursensor 2) und zwei Elektroden 3) und 4) befinden. Die spezielle Formgebung 13) der Messspitze 1) und des Messkopfträgers 6) ermöglichen ein extrem zerstörungsarmes Einbringen der Vorrichtung in-den Prüfkörper. Durch den geringen Abstand der Elektroden 3) und 4), die zusammen mit dem Temperatursensor in einer isolierenden Fassung 5) eingebettet sind, ist eine sehr genaue und punktuell hochauflösende Messung der im Prüfkörper variierenden elektrischen Leitfähigkeit und Temperatur möglich. Der Messkopfträger ist mit einer Schlagvorrichtung bestehend aus Schlagkopf 10), Schlagkopfführung 11) und Anschlag 12) verbunden, die das schubweise Einbringen/Herausziehen der Messpitze 1) in den bzw. aus dem Prüfkörper ermöglicht. Die exakte Position der Messspitze 1) wird über einen Tiefenmessfühler 7) registriert.The device described consists of a specially shaped measuring tip 1), in which there is a temperature sensor 2) and two electrodes 3) and 4). The special shape 13) of the measuring tip 1) and the measuring head carrier 6) enables an extremely low-destructive insertion of the device into the test specimen. Due to the small distance between the electrodes 3) and 4), which are embedded together with the temperature sensor in an insulating holder 5), a very precise and selectively high-resolution measurement of the varying electrical conductivity and temperature in the test specimen is possible. The measuring head carrier is connected to an impact device consisting of an impact head 10), impact head guide 11) and stop 12) which enables the measuring tip 1) to be inserted/removed in or out of the test specimen in increments. The exact position of the measuring tip 1) is registered by a depth sensor 7).
Die gemessenen Werte werden in einer elektronischen Vorrichtung 8) aufgezeichnet, die direkt am Messkopfträger 6) angebracht oder mittels Kabel damit verbunden ist. Die aufgenommenen Werte werden auf einem Display direkt angezeigt oder in einem Speicher gespeichert, von wo sie auf einen andern elektronischen Speicher oder einen Drucker ausgegeben werden können. Der Vorteil dieser Erfindung liegt darin, dass die elektrische Leitfähigkeit unter Einbezug der Temperatur und der Messposition im Prüfkörper gemessen wird. Ersteres ist aufgrund der physikalischen Gesetzmässigkeiten für aussagekräftige Messdaten unerlässlich; letzteres erlaubt die exakte räumliche Zuordnung der Messdaten im Prüfkörper. Damit lassen sich die elektrischen Leitfähigkeiten unabhängig vom Temperatureinfluss in ihrer räumlichen Verteilung im Prüfkörper ermitteln. Die Anwendung des beschriebenen Geräts liegt in erster Linie in der Untersuchung von stehenden Bäumen. In Abhängigkeit vom Gesundheitszustand des Baumes oder einzelner Baumteile treten in Bast, Kambium, Splint- und Kernholz unterschiedliche elektrische Leitfähigkeiten auf. Durch die Messung der elektrischen Leitfähigkeit entlang eines radialen Messprofils im pflanzlichen Holzkörper ergeben sich Rückschlüsse insbesondere auf die Viatlität des Kambiums, auf den Wassergehalt des wasserleitenden Splintholzes und auf eine allfällige Holzfäule im Kernholz im Bereich der Messstelle. Im Brennpunkt solcher Untersuchungen stehen die Wurzeln von Bäumen im urbanen Raum, die durch Baumassnahmen geschädigt erhebliche Risiken hinsichtlich Stand- und Bruchsicherheit in sich bergen. Ein weiterer Anwendungsbereich liegt in der Überprüfung von Gegenständen aus Massivholz und Holzwerkstoffen hinsichtlich ihres Zustandes. Auch hier liegt der Schwerpunkt auf Objekten im Aussenbereich, wo grosse Schwankungen nicht nur in der Feuchtigkeit, sondern auch in der Temperatur des Prüfkörpers auftreten.The measured values are recorded in an electronic device 8) that is attached directly to the measuring head carrier 6) or connected to it by means of a cable. The recorded values are shown directly on a display or stored in a memory, from where they can be output to another electronic memory or a printer. The advantage of this invention is that the electrical conductivity is measured taking into account the temperature and the measuring position in the test body. The former is essential for meaningful measurement data due to the laws of physics; the latter allows the exact spatial allocation of the measurement data in the test body. This allows the electrical conductivities to be determined in their spatial distribution in the test body, regardless of the influence of temperature. The application of the described device is primarily in the examination of standing trees. Depending on the health of the tree or individual parts of the tree, different electrical conductivities occur in the bast, cambium, sapwood and heartwood. By measuring the electrical conductivity along a radial measurement profile in the plant wood body, conclusions can be drawn, in particular, about the vitality of the cambium, the water content of the water-conducting sapwood and any wood rot in the heartwood in the area of the measuring point. The focus of such investigations are the roots of trees in urban areas, which, if damaged by construction work, pose considerable risks in terms of stability and breakage. Another area of application is the inspection of objects made of solid wood and wood materials with regard to their condition. Here, too, the focus is on objects outdoors, where large fluctuations occur not only in the humidity but also in the temperature of the test object.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29709604U DE29709604U1 (en) | 1997-06-03 | 1997-06-03 | Measuring device for measuring the temperature and electrical conductivity depending on the depth of penetration in plants and wood |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29709604U DE29709604U1 (en) | 1997-06-03 | 1997-06-03 | Measuring device for measuring the temperature and electrical conductivity depending on the depth of penetration in plants and wood |
Publications (1)
Publication Number | Publication Date |
---|---|
DE29709604U1 true DE29709604U1 (en) | 1998-02-26 |
Family
ID=8041061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE29709604U Expired - Lifetime DE29709604U1 (en) | 1997-06-03 | 1997-06-03 | Measuring device for measuring the temperature and electrical conductivity depending on the depth of penetration in plants and wood |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE29709604U1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022125742A1 (en) | 2022-10-06 | 2024-04-11 | Octogon Gmbh | Measuring head, handheld device, measuring robot and conveyor system |
-
1997
- 1997-06-03 DE DE29709604U patent/DE29709604U1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022125742A1 (en) | 2022-10-06 | 2024-04-11 | Octogon Gmbh | Measuring head, handheld device, measuring robot and conveyor system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 19980409 |
|
R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20010122 |
|
R157 | Lapse of ip right after 6 years |
Effective date: 20031231 |