Introducing the IoMT™ DART geophysical receiver. By adopting technologies developed for the Internet of Things (IoT), a low power, high fidelity data acquisition system is now available at an industry leading ultra-low cost.
The IoMT™ DART features high-capacity internal data storage and a high-precision triaxial fluxgate magnetometer in a compact integrated water-tight package designed for rapid deployment and for reliable, long-term operation. With on-board orientation sensors and vector field rotation algorithms, the IoMT™ DART can be deployed rapidly without requiring orienting it in the field. As a complete system-in-a-package with integrated internal fluxgate sensor, the "DART Blue" version is a self contained long-period MT instrument requiring no external magnetometer or delicate fluxgate sensor cables.
Optionally, in addition to its internal fluxgate sensor, external induction coil magnetic field sensors and high digitization rates are also supported in the "DART Purple" version, for wideband and audiofrequency MT applications. Since the long-period band is already covered by the integrated fluxgate sensor, higher frequency bands can be covered by compact induction coil sensors, eliminating the need for cumbersome and expensive, long and heavy induction coils.
Each channel in both Blue and Purple DART versions has a dedicated 32-bit digitizer for extended dynamic range and improved SNR enabling operation in areas of high environmental noise.
With remote high-speed LTE mobile phone network communication options, the IoMT.tech cloud platform adds real-time internet-accessible data synchronization and on-demand robust, single and multi-station processing to the DART system’s capabilities. Fast GPU-accelerated inverse modeling capabilities are also being developed for the IoMT Cloud web service platform.
Where LTE is unavailable, third-party provider SpaceX Starlink™ Satellite communications can be linked to the DART’s built-in WiFi system to provide data synchronization nearly anywhere in the Americas, western Europe, Australasia and parts of Asia and Africa, with additional locations planned. IoMT.Tech can also work with clients to transmit the DART data stream using satellite terminals from other, client-specified providers.
The DART system comes complete with DART Connect. Rather than requiring field personnel to establish a physical connection to the DART to configure the instrument or to extract data, or requiring the crew to install an application program with these functions, the DART Connect interface communicates and controls the DART operations through the DART’s built-in WiFi webserver. No more bulky cables to lug around or temperamental software to install.
The benefit of the WiFi webserver facilitates the ease of use in communicating by allowing any device, mobile or computer, to establish connection to the WiFi access point provided by an integrated internal WiFi antenna up to ~10 m around the DART. The DART Connect interface can then be loaded in any modern browser displaying a clean webpage interface which provides all the features needed to control the DART, including starting/ending runs, streaming time series, and downloading the data. The DART Connect interface is a step forward in ease of use of EM equipment.
