ATLAS-C: MULTICHANNEL DATALOGGER

REQUEST FOR PRICING

Atlas-C is a recorder for seismic signals.

Description

It is available with 3, 6 or 9 synchronous channels for external inputs (accelerometers or velocimeters).
Atlas-C was designed to be used in the field in tough conditions without any additional protection.
An easy to access slot on the lid get the access to the additional removable microSD card and to the HSPA modem sim card.
WiFi, GNSS and HSPA antennas are built-in within the housing; should there be inadequate sky-view an external GNSS antenna connection is available with an auto-switch function.

Atlas-C features a high capacity battery pack for your daily surveys or as a back-up in case of power cuts.
Atlas-C is ready for use, no need to plug in antennas, no need for external battery back-up, no need for an external 3G modem, it is all built-in.

Application

Atlas-C is an easy to use instrument that simplifies your work in the field.

Everything you need is built-in inside the housing: batteries, GNSS antenna, WiFi, HSPA.

If the Atlas-C has a good sky-view, the internal GNSS antenna functions perfectly; vice-versa, when it is necessary to plug the external GNSS antenna in, the system will auto-switch to the external one.

Data is simultaneously stored on the internal memory and on the external card.

You can eject the external card with your data and insert a empty one, without worrying about downloading.

Just bring the Atlas-C and your sensor, it’s everything you’ll need for your seismic surveys.

PHOTOVOLTAIC SUPPLY

The Atlas-C power supply input can be directly connected to a small photovoltaic panel. ​The overall power consumption of the station is maximum 12W when internal batteries are completly discharged. The typical power consumption when the batteries are fully charged drops below 2W.

PERMANENT OR SHORT-TERM MONITORING

Atlas-C can be used with an accelerometric or a velocimetric sensor.

​Atlas-C can be configured in-situ using WIFI or LAN cable.

If Atlas-C is used for permanent monitoring, it can be reached remotely using the built-in HSPA modem or using LAN connection in order to link it, for example, to an ADSL modem.

Models

ATLAS-C models available

  • Atlas-C 3T: 24bit channels on a single MIL connector (size 14, 19 pins) sample rate up to 1Khz​.
  • Atlas-C 6T: 24bit channels on two MIL connectors (size 14, 19 pins) sample rate up to 500Hz​.
  • Atlas-C 9T: 24bit channels on three MIL connectors (size 14, 19 pins) sample rate up to 250Hz​.

Features

InputsDifferential
Channelslow noise 24bit
Dynamic Range>136dB@100 Sps
Sampling Rate10,100,200,250,500,1000 Sps
Sampling TopologySynchronous
Data FormatMiniSeed or Proprietary
TriggerSTA/LTA
TimingBuilt-in GNSS receiver
TimestampEncapsulated in data
LAN10/100 ethernet port
WiFiOptional built-in
Cellular ModemOptional built-in
Power Supply9-28 Volt DC – power consumption < 2W
Back up BatteryInternal LiPo
System Autonomy w/o external supply33 hours
ConfigurationWeb Interface
CompatibilityEarthworm,Antelope,Geopsy,SeiscomP and SeisGram2K
Weight2Kg
IP protectionIP68
Temperature Range-40°C to +70°C

Faqs

FREQUENTLY ASKED QUESTIONS

 

IS ATLAS CAPABLE OF PERFORMING BOTH REAL-TIME STREAMING AND EVENT-TRIGGERING SIMULTANEOUSLY?

Answer: Yes, ATLAS may do both tasks in parallel. For event-triggering, threshold exceedance instead of STA/LTA is recommended for accelerometers.

 

WHAT HAPPENS WHEN THE TELEMETRY IS DOWN? CAN THE DATA BE RETRIEVED EASILY?

Answer: The telemetry works through SeedLINK protocol, which holds data in its ring buffer whose size is by default 1GB (expandable): it corresponds to some days of continuous recording. When the telemetry goes down, the client may request data from the last packet received before the break and then recovered all the missing data. This is automatically handled by the SeedLINK client. Whether the telemetry is up or down, the device always stores data in a separate folder and the telemetry (SeedLINK) server detects it, and copies data in its ring buffer, ready to be sent on request.

 

CAN MULTIPLE ATLAS DIGITIZERS AT DIFFERENT LOCATIONS BE TRIGGERED SIMULTANEOUSLY?

Answer: This could be done in two ways. For example, if the 2 or more ATLAS digitizers are in the same LAN segment, either ATLAS could reach the trigger status and trigger all the other units with a broadcast message. If they are installed in different LAN segments (for example there is a gateway in the middle), this won’t work and we should install an additional module on a Linux machine that catches the alarms from the devices and implements a trigger voting algorithm.

 

WHAT FORMAT DOES THE ATLAS DIGITIZER USE TO SAVE EVENT FILES?

Answer: MiniSEED, just like the continuous recording. But if we install the QUAKELOGIC Event Watchdog software to the remote server, the trigger files may be sent automatically to a remote server and exported in ASCII format, or the server may extract the event data from the continuous recording and perform the export. For example, this would be the best way to interact with a LABVIEW application.

 

HOW DOES ATLAS DIGITIZER SEND AN EVENT FILE TO A REMOTE SERVER?

Answer: The ATLAS digitizer can communicate with the remote server (Linux Machine) through MQTT and SeedLINK. The Linux Machine takes care of storing all the continuous recordings from the ATLAS devices and receives the trigger data through MQTT or just extracts it from the continuous buffer. At this point, data is still available in MiniSEED. Once we have a time window for an event, we may export it in ASCII.

 

HOW CAN ATLAS DIGITIZER BE POWERED BY A SOLAR POWER?

Answer: The ATLAS digitizer can be powered by a 12 V solar panel (>100 W). The system requires a solar panel, 12V backup battery and controller unit. QuakeLogic can provide all these auxiliary hardware including on-site installation.

Datasheet

ATLAS-C
ATLAS-C

 

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