TERRA-TECH, INC.
1-1-A1208,Sanda-Machi
Hachioji-City, Tokyo
193-0832 Japan
TEL: +81-42-662-4122
FAX: +81-42-662-4120
info@ttij.com
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Localises
defects in trees exactly and non-invasively
PICUS interpret damages of trees with 2-dimension colored Tpmograms
User
friendly , High Density Images Speaks thousand words |
This
highly sophysticated system uses a series of sensors placed around
the stem of
the tree at the desired level of investigation and connected to
a computer.
By tapping special pins placed into the sub-bark layer of the tree,
a series of sound
waves can be cross-interpretted by all the sensors. This provides
a cross-section
picture of the tree's interior condition at any given level of the
stem using the accurate measurement of sound velocities through
varying densities of tissue.
PICUS Tomograph can be used either at ground level or high in the
crown of a tree.
It is thus possible, using multiple readings, to assess accurately
the condition of the entire stem of a tree is required.
| The
problem |
Municipalities
and private owners are held liable for damages caused by their
trees.
Most often trees are broken or thrown because of decay caused
by fungal infections.
To avoid risks the safety of trees has to be assessed on a regular
basis.
The usual investigation method and devices need several years
of experience, inspect only small parts of the trunk ,or cause
severe injuries ( e.g. increment borers, penetrometers)
Their range of application is therefore limited.
The PICUS Sonic Tomgraph can investigate very large trees which
have been a problem with previous method.
It is easy to apply and yields precise results.
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| Application
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The
measuring is based on the fact that
sound
wood is a better wave conductor than wood damaged by decay.
The device uses a series of sonic
sensors which detect waves induced and propagated through the
wood.
Typically 10 to 14 sonic sensors are strategically placed around
the tree.
Each sensors is connected to a nail which is tapped into contact
with the wood by a hammer at each inspection point.
A small tap on a metal pin is all that is required to send sound
waves which are received and measured by the other sensors.
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step1
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Mounting
the magnetic sensors to the tree by using small roofnails.
Recording the geometry of the tree's cross-section. In most
cases two perpendicular measurements with a calliper suffice.
If not , the software provides assistance for a detailed description
of the geometry.
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step2
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Induction
of stress waves: a slight tap on each sensor.
All other sensors measure the velocity of the stress waves.
Handheld PC controls the measurement and stores the data.
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| step
3 |
Handheld
PC shows the result of the measurement
graphically right at the tree. |
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Specifications
Tree size : 0.3m< diameter measurable < Max.4m
by25 sensors
Dimension: W 540 x L 480 x H 180mm ( including Case )
Weight: 11.3kg ( including
case )
Power : 100-240V AC 50Hz
Charging Time : 10 hrs.
Consumption: 35 mA
PC performance : Pentium II 266 MHz more
Windows
98/ Me/ 2000/ XP Compatible
Contents: PICUS Power Supply , Modules, Measuring Tape,
Strap, Battery Charger,Hammer,Steel Nails,Pryer, Software
Instruction Manual, Spare Battery, ABS Carrying Case
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