Trident

---

TRIDENT is an advanced logger capable of recording 3D body movements and environmental parameters. The float is made of LD2000 Pure Syntactic Foam, an advance material which is able to maintain its shape and dimensional integrity up to a depth of 2000 meters. The tag archives data and after a pre-determined amount of time pops-up. Once at surface, communicates its location via satellite in order to be physically retrieved. The tag is reusable and capable of induction recharging as to not compromise its structural integrity and depth rating. The color is customisable. This tag is not yet available as it still being evaluated in the field.

The tag includes a 30 Hz tri-axial accelerometer and magnetometer which can be used to accurately reconstruct the movements of the tagged animals in 3D, and measures environmental parameter such as water temperature, pressure, and dissolved oxygen.

This tag communicates with a free Android app via Bluetooth. Before the deployment, the app is used to calibrate sensors, to configure mission parameters (e.g., sampling frequency, resolution, or pop-up timing) and to run real-time tests. After the actual deployment and once recovered, the app is used to download large volumes of data from the tag.

After a pre-determined amount of time (programmable with a smartphone during the initial tagging), the tag sets off a tiny explosive charge that severs the attachment cable. Then, it floats to the surface and determines its position via a GPS receiver, and communicates its location using the Globalstar satellite constellation, so that it can be found and recovered. The frequency of position reporting can be defined by the user. A basic satellite data subscription to Globalstar is required.

TRIDENT is rated to 2000 meters. For more specs, see the table below.

The WildTrack is a GPS logger that sends position information via satellite at user-defined rates. As it  uses the Globalstar satellite constellation to report positions, it can be employed in remote locations that lack cellular network coverage. The tag is reusable and capable of induction recharging as to not compromise its structural integrity and waterproofing. The color is customisable. There are two WidTrack versions (S and L), differing on the dimensions, weight and battery longevity. Please check the downloads below or the store for more details.

Before deployment, a free Android app is used to communicate with the tag via Near Field Communication (NFC). The app is called WildTrack and can be downloaded from the Android's PlayStore. This allows the user to customise the parameters of the mission (e.g., frequency of acquisition and communication of positions, maximum number of positions to report).

A basic satellite data subscription to Globalstar is required. The tag acquires GPS positions and communicates those positions at a user-defined rate. Depending on the habitat structure, it is possible that some positions are not sent (e.g., in deep valleys or dense forests, satellite communication is more difficult). Position data is provided through the Globalstar web service.

This float is also made of LD2000 Pure Syntactic Foam, an advance material which is able to maintain its shape and dimensional integrity up to a depth of 2000 meters. It can be 3D machined to accommodate a vast array of environmental and physiological sensors. Weights are strategically added to obtain the desired buoyancy. The color is also customisable.

The suite of sensors is customisable. The example on the picture on the left includes a visible light camera, an  accelerometer, a pressure sensor (depth), a light intensity sensor and probes to measure environmental and body temperatures. 

After a pre-determined amount of time (programmable with a smartphone during the initial tagging), the tag sets off a tiny explosive charge that severs the attachment cable. Then, it floats to the surface and determines its position via a GPS receiver, and communicates its location using the Globalstar satellite constellation, so that it can be found and recovered. The frequency of position reporting can be defined by the user. A basic satellite data subscription to Globalstar is required. This tag may also include VHF communication for redundancy. 

Weighs approximately 500 gr and measures approximately 12 by 8 cm. The actual dimensions depend on the specific array of sensors of each tag.