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Main ❯ Navigation & tracking systems ❯ VigilArc Microtag: Device specification
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VigilArc Microtag - VigilArc USBL micro responder-beacon Device specification |
KEY FEATURES
- The world’s smallest responder-beacon
- Communication range up to 10001 m
- Reliable digital underwater acoustic communication resistant to multipath propagation
- Code division multiple access - up to 16 isolating addresses
- Low power consumption (Rx/Tx) 0.33/6 W
- Built-in pressure/temperature sensor
- Monoblock design
DESCRIPTION
VigilArc Microtag - miniature version of the responder-beacon of the ultra-short baseline navigation system VigilArc USBL.
The device is designed to be placed on the smallest underwater objects in order to determine their location in real time using the direction-finding antenna VigilArc Array.
The device can be either standalone (with an additional battery pack) or interfaced with the carrier for power.
Extremely small size, ease of use and low power consumption make the direction-finding system VigilArc USBL an ideal solution for working with autonomous and remotely controlled vehicles, as well as for determining the relative position of divers.
TECHNICAL SPECIFICATIONS
| PARAMETER | VALUE |
|---|---|
| DIMENSIONS (Ø x h) | 41 x 45 mm |
| WEIGHT (dry)2 | 0.16 kg |
| MAXIMUM DEPTH | 300 m |
| DEPTH RESOLUTION | 0.6 m |
| MAXIMUM ACOUSTIC COMMUNICATION RANGE1 | 1000 m |
| ACOUSTIC SOURCE LEVEL | 169 dB re 1 μPa @ 1 m |
| CARRIER FREQUENCY | 20100 Hz |
| BUILT-IN TEMPERATURE SENSOR ACCURACY | 0.1°C |
| SUPPLY VOLTAGE | 12 V |
| DATA LINE VOLTAGE | 0 .. 3.3 V |
| BIT ERROR RATE | 10-6 |
| SNR3 | -3 dB |
| MAXIMUM RELATIVE VELOCITY | ± 2 m/s |
| STARTUP TIME | 100 ms |
| OPERATING TEMPERATURE RANGE | -5 .. 50 °C |
| POWER CONSUMPTION (Rx/Tx) | 0.33 / 6 W |
| INTERFACE | UART 9600 bit/s |
| COMMUNICATION PROTOCOL | NMEA 0183 PAZM |
| CABLE LENGTH4 | 0.5 m |
| MAXIMUM NUMBER OF ADDRESSES | 16 |
- 1 A parameter that determines the maximum range at which a signal can be received, based on electro-acoustic parameters of the transmitter and receiver, spatial decrease in the intensity of sound energy, attenuation in the medium and the acoustic noise level.
- 2 Excluding the weight of the battery pack.
- 3 The value was obtained in a laboratory static experiment, without taking into account the multipath propagation effect.
- 4 The value can be changed on request.
- 5 Obtained in laboratory conditions in a static experiment.
ADDITIONAL INFORMATION
In the standalone version, the device is equipped with a battery pack based on LiFePO4 (lithium iron phosphate) batteries, which provide more than a thousand charge-discharge cycles and operation at low ambient temperatures.
The responder-beacon is connected to the battery pack through a sealed connector, which additionally provides the function of automatically switching the device on when it is immersed in water.
The operating time of the responder-beacon on the battery pack depends on the intensity of the exchange with the direction-finding antenna, which in turn depends on the range, the number of responder-beacons polled by the direction-finding antenna and the hydrological conditions.
BATTERY LIFE
| POLLING PERIOD, s | OPERATING TIME, h | NOTE |
|---|---|---|
| - | 70 | Without polling, in receiving mode |
| 1 | 8 | Shortest possible polling period |
| 2 | 16 | |
| 4 | 32 | |
| 8 | 64 | |
| 16 | up to 70 |
CABLE WIRE ASSIGNMENT (In the integrated version)
| WIRE COLOR | FUNCTION |
|---|---|
| 🟥 Red | + Usupply |
| 🟩 Green | Tx |
| ⬜ White/Transparent | Rx |
| 🟨 Yellow | SVC |
| Shield | - Usupply |