Ultrasonic ranging sensor using simultaneous emissions from different transducers

In recent applications based on ultrasound, several ultrasonic transducers have been geometrically and electronically associated to constitute a global sensor. There are several different methods used to process the ultrasonic signals obtained from these transducers. In this work, multimode techniqu...

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Bibliographic Details
Published in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 2004-12, Vol.51 (12), p.1660-1670
Main Authors: Hernandez, A., Urena, J., Garcia, J.J., Mazo, M., Hernanz, D., Derutin, J.-P., Serot, J.
Format: Article
Language:English
Subjects:
Acoustics
Algorithms
Animals
Biomimetic Materials
Echolocation
Engineering Sciences
Exact sciences and technology
Ferroelectric materials
Field programmable gate arrays
Fundamental areas of phenomenology (including applications)
General equipment and techniques
Image Interpretation, Computer-Assisted - methods
Imaging, Three-Dimensional - methods
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Mobile robots
Performance evaluation
Physics
Pulse measurements
Real time
Reflection
Reproducibility of Results
Robotics - methods
Sensitivity and Specificity
Sensor phenomena and characterization
Sensors
Signal processing
Time measurement
Transducers
Ultrasonic transducers
Ultrasonic variables measurement
Ultrasonics, quantum acoustics, and physical effects of sound
Ultrasonography - instrumentation
Ultrasonography - methods
Ultrasound
User-Computer Interface
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Summary:In recent applications based on ultrasound, several ultrasonic transducers have been geometrically and electronically associated to constitute a global sensor. There are several different methods used to process the ultrasonic signals obtained from these transducers. In this work, multimode techniques using Golay complementary sequences are proposed for processing the ultrasonic signal. The system increases scan rate, precision, and reliability. It is also capable of echo discrimination, allowing simultaneous measurements to be made and detection of the same obstacle by different transducers without cross-talk problems. The real-time implementation of the algorithm is presented on a field-programmable gate array (FPGA) device.
ISSN:0885-3010
1525-8955
DOI:10.1109/TUFFC.2004.1386683