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 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.
Hernández
Alvaro
A
Electronics Department, University of Alcalá, Alcalá de Henares, 28806 Madrid, Spain. alvaro@depeca.uah.es
Ureña
Jesús
J
García
Juan J
JJ
Mazo
Manuel
M
Hernanz
Daniel
D
Dérutin
Jean-Pierre
JP
Sérot
Jocelyn
J
D000465:Algorithms; D000818:Animals; D040761:Biomimetic Materials; D004455:Echolocation; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D015203:Reproducibility of Results; D012371:Robotics / Q000379:methods*; D012680:Sensitivity and Specificity; D014159:Transducers; D014463:Ultrasonography / Q000295:instrumentation* / Q000379:methods*; D014584:User-Computer Interface