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  • 《電子技術應用》
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    基于Hi3516D的低功耗圖像采集系統的設計
    2021年電子技術應用第7期
    甄國涌,曹 飛,陳建軍,賈興中
    中北大學 電子測試技術國家重點實驗室,山西 太原030051
    摘要: 在分析日益小型化、集成化的航天圖像設備功耗緊張的基礎上,設計了以國產視頻處理芯片Hi3516D為核心的接口方案,使設備能應用該接口實現低功耗圖像采集傳輸功能。具體分析了低功耗器件選型、電源功耗硬件適配、動態調壓硬件電路及數據收發流程;給出了動態調壓硬件電路參數計算、低功耗模塊軟件設計流程及uboot寄存器、內核模塊的信息配置;測試了不同分辨率下的圖像質量以及功耗情況。經設計分析及測試驗證,該接口工作在3 Mb/s碼率以內時,整機功耗不超2.5 W,且優化降低功耗8%~16%,圖像質量PSNR優于36 dB,接口性能滿足設計要求。
    中圖分類號: TP274
    文獻標識碼: A
    DOI:10.16157/j.issn.0258-7998.201134
    中文引用格式: 甄國涌,曹飛,陳建軍,等. 基于Hi3516D的低功耗圖像采集系統的設計[J].電子技術應用,2021,47(7):102-105.
    英文引用格式: Zhen Guoyong,Cao Fei,Chen Jianjun,et al. Design of low power image acquisition system based on Hi3516D[J]. Application of Electronic Technique,2021,47(7):102-105.
    Design of low power image acquisition system based on Hi3516D
    Zhen Guoyong,Cao Fei,Chen Jianjun,Jia Xingzhong
    Science and Technology on Electronic Test and Measurement Laboratory,North University of China,Taiyuan 030051,China
    Abstract: Based on the analysis of the shortage of power consumption of the increasingly miniaturized and integrated space image equipment, this paper designs an interface scheme based on the domestic video processing chip Hi3516D. So that the equipment can use this interface to realize the function of low-power image acquisition and transmission. The selection of low-power devices, power consumption hardware adaptation, dynamic voltage regulation hardware circuit and data transceiver flow are analyzed in detail; the calculation of dynamic voltage regulation hardware circuit parameters, the software design flow of low-power module and the information configuration of uboot register and kernel module are given; the image quality and power consumption under different resolutions are tested. After design analysis and test verification, when the interface works within 3 Mb/s bit rate, the power consumption of the whole machine is less than 2.5 W, and the power consumption is reduced by 8%~16%, the image quality PSNR is better than 36 dB, and the interface performance meets the design requirements.
    Key words : Hi3516D;AR0230CS;MP2122;adaptive voltage scaling(AVS);image acquisition

    0 引言

        隨著電子產業的快速發展以及航空航天實驗條件的不斷嚴苛,搭載設備的小型化、集成化也在不斷提升要求。圖像數據作為直觀的數據來源,扮演了越來越重要的數據支撐角色。對于航空航天設備,一般都具有空間受限、能耗珍貴、帶寬有限的特點[1-2],所以搭載的圖像采集系統必須要在保證圖像質量的前提下,盡量降低功耗,期望可以長時間工作,并盡量降低碼率,期望可以節省存儲空間、降低帶寬使用率。例如某遙測設備,遙測帶寬一般為2 Mb/s~5 Mb/s,工作時長可能長達數小時,需要實時獲取設備運行狀況圖像[3-4],對于大部分的可行方案,有些采用普通ARM處理器架構可以做到實時傳輸,但是圖像分辨率較低;有些采用FPGA采集、Flash存儲、DDR讀取設計框架,可以做到高分辨率[5-6],但是實時性和碼率要求不達標。

        基于以上實際需求,采用國產化海思主控芯片Hi3516D,設計了一種低功耗、低碼率、高質量的圖像采集系統。




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    作者信息:

    甄國涌,曹  飛,陳建軍,賈興中

    (中北大學 電子測試技術國家重點實驗室,山西 太原030051)




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