Lightning: Seismic Vibrator
from Seismic Mechatronics

The Lightning is an electromagnetic seismic vibrating source ideal for shallow (200m) geological exploration and engineering projects. The electric actuator is positioned within the source plate and can be rotated through 90º in order to generate shear (S) and primary compression (P) waves. Powered from a 48VDC battery bank or 230V power supply the Lightning can be deployed to suit the constraints of the survey area.

Lightning Seismic Vibrating source mounted to an ATV for deployment on difficult terrain.
Lightning Seismic Vibrating source mounted to an ATV for deployment on difficult terrain.

For larger area coverage the lightning can be fitted to an electric lift mounted to the front or rear of a vehicle, via a standard tow hitch. When mounted on an ATV the lightning can access even the most remote locations. The lift will also apply addition load to the source plate enhancing ground coupling.

In urban areas where, vehicle access is restricted, the system can be deployed on an electric trolley. With an electric drive motor and mount for the electronics and battery module the trolley can be manoeuvred by a single operator. The concept has been further developed into a full remote control vehicle deployment for use in mines and tunnels.

For sites constrained by surface furniture (railings, dust bins, lamp posts etc.…) the source plate can be positioned use a hand trolley and loaded with blast.

Lightning source in P (top) & S (bottom) wave configuration.
Lightning source in P (top) & S (bottom) wave configuration.

Features

  • High quality vertical resolution
  • Wide frequency range
  • Low THD
  • P-waves & S-Waves
  • Easy handling and easy transportation
  • Highly repeatable signals
  • Very low maintenance
  • Very low noise emmision
  • Watertight up till 20 bar
  • User specified sweep taper
  • Reaction Mass and Base plate accelerators
  • Compatible with all leading seismographs

If 1700N of force wont cut the mustered, multiple lightning systems can be synchronised to double the output force, and the system will still run off a 48VDC supply. The phase and time zero are synchronous to within 8us enabling bespoke portable source arrays for both near surface site investigation and structural dynamics testing.

Lightning Dual Source configuration (image courtesy of Seismic-Mechatronics
Lightning Dual Source configuration (image courtesy of Seismic-Mechatronics

Product Dimensions

Physical Dimensions (L x W x H) Weight
Lightning: Seismic Vibrator (instrument only) 0.4m x 0.4m x 0.15m 90kg

Technical Specifications

Frequency Range: 1 — 1000Hz (start taper at 1 Hz)
Full Drive Frequency: 8 — 400Hz
Force: S-wave: 1700N (400lbs)
P-wave: 1200N (270lbs)
Sweep Length: Unlimited
Signal Penetration: Approx. 200 m
Power supply: 48VDC battery / 230VAC power
Output: Pilot, Weighted Sum Ground Force
Trigger: Send/receive 0-5V rising edge

Shipping

Contents Dimensions (L x W x H) Weight
Case1
Vibrator
52cm x 42cm x 21cm 90kg or 150kg
Case2
Control Box
84cm x 55cm x 40cm 35kg
Case3
Vehicle lift
141cm x 40cm x 23cm 90kg
Case4
Trolley (de-assembled)
103cm x 55cm x 38cm 25kg
Case 5
Battery Box
60cm x 60cm x 23cm 130kg
Shipping Notes:

Items will be combined onto a Pallet for shipping (100x120x155cm) 500kg. Forklift or vehicle with tailgate lift required for loading and unloading.