Abstract

To solve the problems of insufficient acceleration capability and high power consumption of the existing embedded terminal target detection, a multi-strategy optimization hardware accelerator based on the YOLOv2 model is designed by taking advantage of the high concurrency characteristics of the CPU+FPGA structure. The accelerator improves its parallelism and real-time performance while reducing power consumption and resource consumption through floating-point quantization, adder optimization, and various HLS optimization strategies. Tested on Xilinx’s PYNQ-Z2 platform, the overall computing power of the accelerator reaches 27.1GOP/s, the average detection accuracy is 80.6%, and the overall power consumption is 2.609W. Compared with CPU and GPU, the obtained accuracy only loses 2%, but the power consumption is greatly reduced. It has strong practical significance in edge target detection that requires high real-time performance and low power consumption.

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