Self-contained Underwater Sound Recorder Hydrophone for Ocean Deployments

Self-contained Underwater Sound Recorder Hydrophone for Ocean Deployments

It is an instrument that can independently collect and store acoustic information. It is composed of an underwater acoustic sensor, a conditioning circuit, an amplification circuit, a storage circuit, etc., and is generally equipped with software. It has technical features such as wide working frequency bandwidth, large working depth range, flexible working mode, long continuous working time, and large dynamic range. It is small in size and suitable for flexible formation. Can work in unattended marine environment for a long time. Its convenient and efficient features can meet a variety of use needs, and it has now become an important tool in scientific research fields such as marine environmental noise research, ocean acoustic layer analysis, geoacoustic parameter inversion, and underwater acoustic channel characteristics research.

Specification:

1. Function

1) Real-time data collection and real-time storage in the built-in SD card.

2. Hardware parameters

1) MCU control module. Large-capacity SD card, serial port, digital interface, gain control module, power management module, etc.

2) Front-end signal conditioner. The amplification gain can reach 1600 times and can be dynamically adjusted by the MCU.

3) Dedicated ADC chip. Sampling rate 32kSPS, 64kSPS, 128kSPS and 256kSPS. Quantization bit number 24 bits.

4) Broadband self-contained hydrophone. Bandwidth 20 Hz-50 kHz.

3. Size parameters

1) Inner diameter: 70 mm

2) Outer diameter: 80 mm

3) Height: it is optional according to battery capacity.

4) Battery capacity: rechargeable lithium battery, capacity can be customized.

4. Working mode

1) Continuous working mode, the longest working time is less than 2 months.

2) Intermittent working mode. The intermittent time and working time can be set by the host computer.