低功耗抗干扰的三抽头ToF解调设计  

Three-Tap Time of Flight Demodulation Design with Low Power and Anti-Interference

作　　者：朱亮 何燃 闫敏 肖振中 董玉明[1] Zhu Liang;He Ran;Yan Min;Xiao Zhenzhong;Dong Yuming(Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518052,Guangdong,China;Orbbec Technology Group Co.,Ltd.,Shenzhen 518055,Guangdong,China)

机构地区：[1]中国科学院深圳先进技术研究院,广东深圳518052 [2]奥比中光科技集团股份有限公司,广东深圳518055

出　　处：《激光与光电子学进展》2025年第2期83-88,共6页Laser & Optoelectronics Progress

摘　　要：提出了一种新型的三抽头飞行时间(ToF)解调方案,可以在不损失测距精度的前提下,有效降低用于深度计算的多个相位数据的采集、传输和计算功耗。同时引入三抽头轮转开启策略,可以显著改善由CMOS工艺原因导致的各抽头增益不一致、距离标定效率较低等。此外,还提出了一种簇间伪随机编码设计,有效解决了多个ToF相机在同一场景工作时互相干扰的问题。所提组合策略对于ToF三维感知成像技术的低功耗小型化具备一定的现实意义。This article proposes a novel three-tap time of flight(ToF)modulation and demodulation scheme,which can effectively reduce the power consumption of multiple-phase data acquisition,transmission,and calculation for depth computing without losing ranging accuracy.Our three-tap rotation strategy also resolves the inconsistent gain and large residual distance calibration accuracy caused by CMOS technology.We also propose an inter-cluster pseudo-random coding design that effectively reduces the mutual interference among multiple ToF cameras working in the same scene.The proposed combination strategy can potentially advance the low-power miniaturization of ToF three-dimensional perception imaging technology.

关 键 词：飞行时间 三抽头 低功耗 抗干扰 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]