ahoi -Underwater Acoustic Modem

μAUVs enable automated, unsupervised environmental underwater monitoring, inspections, and interactions with the environment. Applications range from automated water-quality monitoring over inspections of bridges and wind parks, to supporting divers in dangerous missions.

ahoi - has been used for:

• The timely detection of health hazards for the public
• Bio-hazards caused by fuel-oil leaks
• Pollutant introductions by ships or industrial equipment,
• Examination of ship hulls and sheet piles
• Disaster management support

• Low power consumption
• Communication up to 200m
• Communication range of factor 2.7 or 8dB depending on baseline consumption
• Gain ranges from 60dB to 96dB at more than 100m
• No signal clipping at around 2m with the lowest gain level
• Sinusoidal signals from 0kHz to 500kHz
• Mainboard power consumption from 195mW to 205mW
• Receiver power consumption 99mW in sampling mode and 0.2mW in sleep mode
• Transmitter power consumption 1mW in sleep mode and 791mW in sampling mode
• Total power consumption of 1.1W (low output) to 2.1W (high output)
• Processing speed of 12ms

• Mainboard PCB (blue)
• Receive filter and amplifier PCB (green)
• High-power transmit amplifier PCB (red)

Not included:

• Wiring
• MONSUN µAUV
• Battery
• Sensors 

Fulfilment of new orders will be done immediately on ordering.

B.-C. Renner, J.Heitmann, F.Steinmetz (2020). ahoi: Inexpensive, Low-power Communication and Localization for Underwater Sensor Networks and µAUVs ACM Transactions on Sensor Networks Vol. 16, No.2