ARAMIS M/E - Seismic system with DTSS digital transmission of seismic signals


Opis

Depending on the extent of the mine, the system is based on seismometers or optionally on low frequency geophones. The system uses intrinsically safe data transmission, centrally supplied from the surface, which enables to transmit 1-, 2- or 3-axial velocity movements (X, Y, Z). The sampling of signals is performed by means of 24-bit Sigma Delta converters, providing high dynamics of conversion and recording.

Cechy

The processing module of the ARAMIS M/E system works on the basis of the following algorithms:

 

Visualization of the location point on the map:




Informacje techniczne

Maximum number of component channels

         

16 (standard) with one SP/DTSS cassette

(optionally 32 channels with two SP/DTSS cassettes,

Sensors

 

- SPI-70 seismometers in SN/DTSS transmission    stations

- seismometers in CS/DTSS cases

- low frequency GVu, GVd, GHa geophones

Recorded frequency range

 

0 ÷ 150 Hz (underground transmitter)

Signal transmission

 

digital, binary

Digital recording of one, two or three

components (X,Y,Z) of the signal

on one transmission line

 

1,2, or 3

Record and processing dynamics

 

no less than 110 dB (1-component), 100 dB (3-component)

Power supply of underground

transmission station

 

central, intrinsically-safe from the surface

Line voltage supply

   

≤ 35 V DC

Maximum current in a line

 

78 mA

Maximum transmission range

 

Up to 10 km

Data transmission speed in the DTSS system

 

19200 b/s

Average location accuracy

 

± 20m (X,Y), ± 50m (Z) provided that the sensors are located in an

optimum manner

Sampling frequency

 

500 Hz

Minimum energy of a located event

 

10² J

Casing protection degree

of devices in the underground

part of the system

 

IP 54







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