Embedded System for Detecting Underwater Ultrasound

The current paper focuses on the implementation details of a device that detects ultrasound at a distance of 1 m in sea water. This detector could be used to test the operation of ultrasonic emitting devices, called pingers, which deter cetacean mammals from entering fish nets of fishing boats at sea. The device is battery-powered and a low-energy Bluetooth connection is available for turning it on and off.