SYSTEM MODULES

1. The Ground impact assembly is built as a sandwich of aluminum, steel and rubber plates and bells that can be customized for several specific ground conditions.
2. The Hydraulic impact hammer operates in accordance with the sweep control sequence, produced by a hydraulic servocontroller
3. The Hydraulic servo-controller transfers to the hydraulic hammer a coded sequence provided by a sweep control computer.
4. The sweep control computer monitors the hydraulic pressure, flow and temperature and thereof regulates the impact energy and timing.
5. The seismic response recorded by the control computer on the Carrier vehicle is conveyed to the recording station by a coded radio signal. A variety of seismographs can be used, they include all DMT Summit series, Geometrics’ Geode, Strata- Visor and StrataView, as well as Sercel and Input/Output large distributed systems.

SOFTWARE

- Control Software, used to program and operate the sweep control sequence
- Sweep Decoder, correlates the sweeps. This module can either be used for fast online monitoring or elaborate off Line processing
- Signal Conditioning, includes a collection of filters used for processing of the records before and/or after correlation
- Signal Display Interface, allows the operator to visualize the data conveniently and flexibly.

SPECIFICATIONS

Impact energy: max 3000 J / impact (optional lower energy, 8 steps)
Max theoretical peak force: 700 kN
Impact frequency band: approximately 5 to 250 Hz
Repetition rate: programmable between 1 and 12 impacts per second
Programmed sweep characteristics: operator designed (graphic interface) or preset
Sweep time adjustment: 2.5s to desired
Controller
Reads impact sequence from accelerometer placed on hammer, data on oil (flow, pressure & temperature)
Adjusts and re-adjusts, after each impact, the flow and pressure, to obtain the pre -set value of energy at the pre-set timing
Integrated communications—short (Bluetooth) & long distance
Data transmission
Radio / Cable link for trigger, pilot signal, audio and remote control
Impact Hammer
Hydraulic with gas accumulator
Vertical direction, double stroke
Impact Plate
Steel or aluminum
Area 1sqm
Hydraulic Valve System
Online, automatic & proportional control of flow on both input & return lines
Hydraulic Controller
Working pressure 130 bar
Back pressure 10 bar
Max oil flow 140 l / min
Total weight: 7500kg
Dimensions: 5000x2250x2500 mm (LxWxH)