argus electronic gmbh
Since 1998 argus electronics have been developing tree inspection instruments. These are the mile-stones of that development. argus electronic gmbh – Development and Manufacturing of electronic instruments. Since more than 20 years we have been developing, manufacturing and selling solutions for our customers. The premises of argus electronic gmbh are located in Rostock. Our work is focused in tree inspection technologies, measuring instruments for atmospheric research, dosing control system for agriculture and renewable energies. Our partners who work with our products and distribute these also can be found in 18 countries around the world.
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1997 The cooperation between the tree experts of the 'Instituts für Gehölze und Landschaft GmbH Dr. Gustke' and the engineers of the company argus electronic gmbh was started. The work on the sonic tomograph commenced in 1998. The outcome of this cooperation was the PiCUS Sonic Tomograph, first shown to public in September 1999.
1998 First acoustic Tree Tomogram ever!
The very first acoustic tomogramm of a tree was recorded and calcualted in 1998 at the laboritories of argus electronic in Rostock using an early version of the reconstruction algorithm.
1999 PiCUS Prototype ready
The prototype of the PiCUS tomograph is first shown to public in September 1999 at the 'Osnabrücker Baumpflegetagen'.
2000 PiCUS Version 1 is out!
PiCUS Tomograph version 1 was ready for real work at the 'Augsburger Baumpflegetagen'. The first users are coming from Germany, Austria and the Netherlands.
2000 PiCUS Tomograph wins Technology Award
September 2000: The PiCUS won the technology award (2. grade) of the German Federal state of Mecklenburg-Vorpommern.
2002 PiCUS first Time in the UK
The annual meeting of the Arboricultural Association in Cambridge was the first time the sonic tomographie technology was shown in Great Britain. Ever since this conference we have been cooperating with our partners from Sorbus international Ltd.
2003/2004 Release of the PiCUS Calliper
Development of the PiCUS Calliper
December: the 100th PiCUS sonic tomograph is delivered to a client in Great Britain.
2006 Release of the PiCUS Electronic Hammer
The PiCUS electronic hammer overcomes the limits of the tree size: from now on virtually any tree diameter with any number of measuring points can be tomographed with a limited number of PiCUS sonic sensors.
2006 Release of the TreeTronic 1
Development of the TreeTronic: the first electric resistance tomograph for trees
The 200th PiCUS sonic tomograph was built.
2008 The first PiCUS Meeting
In May of 2008 the first international PiCUS day took place in Rostock. For two days we were disscussing theoretical and practical questions of tomography on trees.
2008 Release of the TreeQinetic Pull Test System
The TreeQinetic Pull test system was introduced to the industry. Pull tests became allot more convenient because data is now collected automatically and continuesly.
2008 Looking for the final Frontiers of Tree Tomography
The largest and tallest tree ever tomographed is a coast redwood (Sequoia sempervirens) in the Redwood National park in California. The circumference in the level of tomography is approximately 15 meter. 66 measuring points have been used.
This photo is showing Philip van Wassenaer working on the PiCUS sonic scan at 50 meter above ground. The highest PiCUS tomography ever done was also carried out at this tree: 93.5 meter above ground level!
The photo shows the vista over the canopy of the redwood forest.
2010 First ISA Biomechanic Week
In August 2010 we took part in an international workshop about biomechanics of trees organized by the International Society of Arboriculture (ISA) and the Davey Tree Care company, Ohio, USA. Scientists from many countries were gathering to carry out partly destructive tests on trees. Argus electronic did research the correlation between wood strength and defects in London plane trees. The graph shows one outcome: the wood of trees with defects is much better than the wood of sound trees. The other photo shows Andreas Detter teaching the pull test method for trees.
2012 Release of the PiCUS 3
The PiCUS version 3 is introduced. The PiCUS 3 is the most compact and fastest tomograph we ever built.
Development of the TMS - Tree Motion Sensors. Dynamic long time measurements of the natural sway motion of trees in winds are now possible.
2013 ISA Biomechanic Week, Ohio
In August 2013 the International Society of Arboriculture (ISA) organized a biomechanic research meeting on the premises of the Davey tree care company in Ohio. Scientists from many countries of the world gathered to do research on trees and exchange experiences. Argus electronic was investigating the correlation between acoustic velocity and the Modulus of Elasticity in standing trees. The image shows a destructive pulling test in which the TreeQinetic Inclinometer was used to measure the tilt of the trunk. Dr. Thomas Smiley (Bartlett) explains how the tree broke. Prof. Steffen Rust (in the back) and Andreas Detter were supervising the test.
2013 Release of the TreeTronic 3
Introduction of the TreeTronic Version 3. Treetronic scans become faster and more easy.
2015 Release of the PiCUS Calliper 3
Introduction of the PiCUS Calliper version 3: the new calliper can be assembled in two different sizes and fits into the PiCUS measuring case when disassembled.
2015 National Parks from Singapore
In November we proudly welcomed the tree experts from National Parks in Singapore. We disscussed experiences and introduced new developments to our guests who have been working with our instruments since 2006. In the photo there are (left to right) Clayton Lee, Taufik Ibrahim, Abdul Hamid Mohd, Lothar Göcke, Rolf Pohlmann and Chan Chu Leong.
2016 Release of the new Elastometer 3
The TreeQinetic Elastometer 3i combines both Elastometer and Inclinometer. Measuring of the bending line of a tree becomes easily available.
2016 Arbol de Tule
One of the largest trees of the world, the 'Arbol de Tule' was tested in cooperation with the technicians of the Oaxaca Insituto Estatal de Ecologia y Desarrollo Sustentable (Institut of ecologie in Oaxaca). A PiCUS 3 with 6 sensors was used to scan the trunk-segments on 9 to 14 measuring points.
The circumference of the tree is more than 50 meter. The tree cannot be tomographed in one step. The tests should find out how good the protruding parts are connected to the main trunk.