BENTHOWAVE INSTRUMENT INC. Acoustic Transducer & System
Multibeam Transducer: 2D Imaging Sonar
BII-7660 series high frequency high resolution multibeam transducers are designed for uses in
2D image Sonar, underwater floor/bottom mapping, sector scanning, navigation, object detection, target tracking, obstacle avoidance in tens or hundreds
meter range.
The transmitting array and receiving array in BII-7660 series operate independently. The curved transmitting array
emits a
broad fan-shape beam to insonify the large sector of interest (the field of view), The
linear receiving array
has fan-shape beams perpendicular to the transmit beam and can be steered
electrically to scan the area of interest.
Both transmit
and receive array are broadband to support broadband Sonar signals
(such as FM/Chirp, Ricker etc.). Acoustic sweeping (2D
scanning) of the horizon or vertical can be achieved with digital beamforming technology.
NOTE: BII-7660 series multibeam transducer consists of a BII-7682 (curvilinear aperture) and BII-7631 (linear phased array). Ordering BII-7682 and BII-7631 is recommended.
BII-7660 Series Multibeam SONAR Transducers: 2D Imaging Sonar
| Typical Applications | |
| Forward-looking Sonar, Scanning Sonar |
Education: Beamforming and Multibeam Technology, Array Signal Processing |
| Underwater Floor Mapping | Underwater Robotic and Vehicle (ROV, AUV, UUV) |
| Object/Target Detection, Navigation | Seafloor Scattering, Roughness, Penetration, reflection and other properties |
| Obstacle Avoidance, Target Tracking | Diver Hand-held System |
| Related Products | |
| BII-7710 Scanning SONAR Transducer: 360° Search | BII-7780 Multibeam Transducer: 2D Scanning Sonar |
| BII-5000 Power Amplifier: SONAR Transducer | Sonar Signal Generation |
Specification
| MIPP: Maximum Input Pulse Power; MCIP: Maximum Continuous Input Power. |
| Multibeam Transducers | BII-7661 | BII-7662 | BII-7663 |
| Frequency: | 240 kHz | 450 kHz | 120 kHz |
| Echo Ranging: | ≤ 250 m | ≤ 120 m | ≤ 450 m |
| Size (LxHxD): | 218x70x80mm | 114x70x80mm | 365x90x80mm |
| Transmitting Array | |||
| Array Geometry: | Curved Array | Curved Array | Curved Array |
| Transmitting Channel: | 1 | 1 | 1 |
| Along-curve Beamwidth (-3dB): | 120º | 120º | 120º |
| Along-Height Beamwidth (-3dB): | 12º | 6.4º | 16º |
| Quality Factor Q: | ≤ 4 | ≤ 4 | ≤ 4 |
| MIPP: | 2000W | 2000W | 2000W |
| MCIP: | 15W | 10W | 20W |
| Pulse Driving Signal: | Pulse and burst
SINE/Square/Chirp excitation. Duty Cycle ≤ 20% and Pulse Width ≤ 100ms at Maximum Input Pulse Power. |
| Receiving Array | |||
| Array Geometry: | Line Array | Line Array | Line Array |
| Receiving Element: | 64 | 64 | 64 |
| Element Spacing (mm): | Fixed | Fixed | Fixed |
| Along-length Beamwidth (-3dB): | 1.5º | 1.5º | 1.5º |
| Along-height Beamwidth (-3dB): | 12º | 6.4º | 16º |
| Beam Steering Range: | ±90º | ±90º | ±90º |
| Quality Factor Q: | ≤ 4 | ≤ 4 | ≤ 4 |
| Bespoke transducers are available on frequency, beam width and receiving element quantities. |
| Miscellaneous: BII-7660 Series Multibeam SONAR Transducers |
| Digital Beamformer: | Not included |
| Temperature Sensor: |
1. Default: No built-in temperature sensor. 2. Built-in temperature sensor. When ordering, append TS to part number for integrating a temperature sensor in the transducer. Click Temperature Characteristics for more information. |
| Impedance Matching: |
BII-6000 Bespoke Impedance Matching between transducers
and power amplifiers. Order Separately. BII does not integrate BII-6000 into the transducer housing. |
| Operating Depth: | 300m |
| Transmitting Cable: | One channel, Shielded cable (SC) Wiring: White or Red Conductor: Signal +; Black Conductor: Signal -; Cable Shield: To System Grounding/Common. |
| Orientation of Receiving Array: | The linear array is located
at the center of the encapsulation case. 1. in default: Ch1 is located at the most right position of the array with Front View or Receiving Face View Ch32 or Ch64 is located at the most left position of the array in Front View or Receiving Face View 2. If the orientation of the linear array is not in default, BII shall specify the orientation in data sheet. |
| Receiving Cable: | Coax: (Coax) 32 or 64 Channels (depending on the part number) Coax Conductor: Signal; Coax Shield: Signal Common. |
| Cable Length: | Standard 0.2m or customized length. |
| Connector: | Wire Leads (WL) |
| Information: | Acoustic Components and System: Installation/Mounting, Ordering, Wiring, Array & Aperture Design and much more. |
| BII provides custom-fit multibeam transducer with bespoke frequency, receiving line array and beam width in horizontal and vertical planes. |
| How to Order Multibeam Transducers |
| BII-766x | x | -Mounting | -x | -x |
| BII-7660 Series | Blank TS |
EFM FGM BFMSS |
Transmit Cable Length in meter |
Receive Cable Length in meter |
| Example of Part Number: | Description |
| BII-7661-EFM-0.2m-0.2m | BII-7661 transducer, End-face Mounting, 0.2m shielded cable (Transmit), 0.2m Coax (Receive), Wire leads. |