With the geophysical measurement methods of seismics
underground structures like cavities can be explored. During that active procedure vibrations
will be generated and transmitted into the ground. Resulting from that process reflexions,
travel time and vibrations can be recorded. According to the soil conditions the measured
data gives clues to hidden objects.
FS-Reflexion is a geophysical measuring instrument to locate subterranean voids like caves,
bunkers, tunnels or basement vaults. FS-Reflexion works with a seismic vibration system. A transmitter generates
vibrations going into the ground. Depending on the type of soil they will be transmitted or damped.
If a void exists it will start to resonate in its own frequency and can be detected by a seismic vibration transducer.
FS-Reflexion can be used all around the world, no matter if there is stony ground, loam or clay soil, in the mountains
or in flat country.
FS-Reflexion includes different operating modes to record and analyse data:
Check Mode to recognize seismic disturbances
Scan Mode to record measurement values for a graphical representation
Frequency-energy-graph to analyse seismic activities
Data transfer to computer for graphical representation in 3D
FS-Reflexion, seismic instrument to detect cavities
Tested and certified by one of the leading technical experts in Germany
The recorded measurement values can be analysed via the
frequency-energy-graph. In this diagram a high amplitude at specific frequencies indicates
existing subterranean voids. Additionally it is possible to summarize all measurement values
to a 3D representation, so that they can be analysed in the professional Visualizer 3D
software. In that way voids cannot only be represented visually, but also their size can be
determined.
Representation of measured values in the frequency-energy-chart
The following technical indications are medial values.
During operation small variations are quite possible.
Control unit with seismic vibration transducer
Dimensions (W x D x H)
22 x 30 x 22 cm
Weight
about 3 kg
Voltage
12 VDC ±10 %
Operating Temperature
0 °C – 45 °C
Storage Temperature
-20 °C – 60 °C
Air Humidity
5 % – 75 %
Waterproof
No
Power consumption (typical)
approx. 12 W
Effective range
4 – 22 Hz (via vibration transducer)
Processor
AMD LX800, 500 MHz
Memory
256 MB RAM, 128 MB data
Vibration transducer
seismic, piezo system
Transmitter
Voltage
12 VDC, internal batteries
Output power (maximal)
150 W
Operating Temperature
0 °C – 45 °C
Frequency (internal control)
4 – 22 Hz
Data transmission (USB)
Technology
USB
Maximum Transfer Rate
19200 Baud
Data transmission (Bluetooth)
Technology
Bluetooth
Frequency
2.4 – 2.4835 GHz
Maximum Transfer Rate
1 Mbps
Receiving Sensitivity
-85 dBm
Maximum Range
approx. 100 m
Computer, minimum requirements
The computer is not part of the scope of delivery.
The indicated values should help you for a correct selection of a suitable computer
for analysis of your measured results.
CD-ROM drive
minimum 4x
Interface (Data transmission)
USB
Free disk space
minimum 50 MB
Working memory (RAM)
minimum 256 MB
Graphic card
minimum 128 MB, OpenGL-compatible
Processor
minimum 1.2 GHz
Operating system
Windows XP, Windows Vista, Windows 7
In the following table you can see the complete delivery contents and all optional accessories. The used symbols have the following signification:
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