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In our system, a general-purpose terminal equipped with a BLE module, a microphone, and a speaker is used for both the mounting device and the water-surface part.
First, the wireless frame transmitted by the underwater BLE sensor is received by the BLE module mounted on the mounting device.
The mounting device then converts the data received from the BLE sensor into acoustic waves and transmits them from the speaker.
Finally, the water-surface part demodulates the acoustic waves received via its microphone and obtains the data transmitted by the BLE sensor, and a user located remotely acquires those data.
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