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Sensors 2017, 17(10), 2355; doi:10.3390/s17102355

An Improved Scheduling Algorithm for Data Transmission in Ultrasonic Phased Arrays with Multi-Group Ultrasonic Sensors

1
School of Mechanical & Automotive Engineering, South China University of Technology, Guangzhou 510641, China
2
Guangzhou Doppler Electronic Technologies Co., Ltd., Guangzhou 510663, China
*
Author to whom correspondence should be addressed.
Received: 29 September 2017 / Revised: 29 September 2017 / Accepted: 12 October 2017 / Published: 16 October 2017
(This article belongs to the Special Issue Intelligent Sensing Technologies for Nondestructive Evaluation)
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Abstract

High data transmission efficiency is a key requirement for an ultrasonic phased array with multi-group ultrasonic sensors. Here, a novel FIFOs scheduling algorithm was proposed and the data transmission efficiency with hardware technology was improved. This algorithm includes FIFOs as caches for the ultrasonic scanning data obtained from the sensors with the output data in a bandwidth-sharing way, on the basis of which an optimal length ratio of all the FIFOs is achieved, allowing the reading operations to be switched among all the FIFOs without time slot waiting. Therefore, this algorithm enhances the utilization ratio of the reading bandwidth resources so as to obtain higher efficiency than the traditional scheduling algorithms. The reliability and validity of the algorithm are substantiated after its implementation in the field programmable gate array (FPGA) technology, and the bandwidth utilization ratio and the real-time performance of the ultrasonic phased array are enhanced. View Full-Text
Keywords: ultrasonic phased array; scheduling algorithm; FIFOs; multi-group sensors; FPGA; bandwidth utilization ultrasonic phased array; scheduling algorithm; FIFOs; multi-group sensors; FPGA; bandwidth utilization
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Tang, W.; Liu, G.; Li, Y.; Tan, D. An Improved Scheduling Algorithm for Data Transmission in Ultrasonic Phased Arrays with Multi-Group Ultrasonic Sensors. Sensors 2017, 17, 2355.

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