Millimeter-Wave Radar Cane: A Blind People Aid With Moving Human Recognition Capabilities
Millimeter-Wave Radar Cane: A Blind People Aid With Moving Human Recognition Capabilities
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DOI：
10.1109/jerm.2021.3117129
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发表时间：
2021-10-17
影响因子：
3.2
通讯作者：
Caddemi, Alina
中科院分区：
文献类型：
--
作者：
Cardillo, Emanuele;Li, Changzhi;Caddemi, Alina
本论文提出了一种基于毫米波雷达和传统白手杖的盲人和视障人士电子旅行辅助工具。它不仅代表了一种先进的系统，能够警告用户潜在的障碍，而且还能区分人类和非人类目标。由于真实场景中可能会有移动目标，因此提出了一种新的距离对准技术，旨在检测由于生理活动引起的微小胸部位移，作为人类存在的关键标志。该系统能够在具有多个运动目标的复杂环境中正确识别人类，从而为用户提供一套完整的信息，即可用目标的存在、位置和性质。通过仿真案例研究和采用122ghz雷达板进行适当的测量，验证了该系统的工作原理和有效性。
This contribution presents an electronic travel aid for blind and visually-impaired people based on a millimeter wave radar and a traditional white-cane. It not only represents an advanced system able to warn the user of potential obstacles, but also discerns between human and nonhuman targets. Since real scenarios would likely have moving targets, a new range alignment technique has been proposed with the aim of detecting the tiny chest displacement due to the physiological activity as the key sign of the human presence. The proposed system is able to properly recognize humans in complex environments with multiple moving targets, thus providing to the user a complete set of information, namely presence, position and nature of the available targets. The operating principle and the effectiveness of the system are shown both by simulated case studies and by employing a 122 GHz radar board for carrying out suitable measurements.