超低功耗无线流媒体摄像机
Ultra-low-power Wireless Streaming Cameras
摘要：
传统上，无线视频流被认为是一种极其耗电的操作。现有方法分别优化相机和通信模块以最小化它们的功耗。然而，无线通信和摄像头的联合重新设计和优化是提供更多节能的原因。我们提出了一种超低功耗的无线视频流摄像机。为了实现这一目标，我们提出了一种新的“模拟”视频反向散射技术，从光电二极管直接馈送模拟像素到反向散射硬件，从而消除了功耗硬件组件，如ADC和放大器。我们使用现成的硬件原型我们的无线摄像头，并表明，我们的设计可以流视频高达13 FPS，并可以运行到150英尺的距离从接入点。我们的COTS原型消耗2.36mW。最后，为了展示我们设计的潜力，我们构建了两个概念验证应用程序：用于微型机器人的视频流和用于人脸检测的安全摄像头。
英文摘要：
Wireless video streaming has traditionally been considered an extremely power-hungry operation. Existing approaches optimize the camera and communication modules individually to minimize their power consumption. However, the joint redesign and optimization of wireless communication as well as the camera is what that provides more power saving. We present an ultra-low-power wireless video streaming camera. To achieve this, we present a novel "analog" video backscatter technique that feeds analog pixels from the photo-diodes directly to the backscatter hardware, thereby eliminating power consuming hardware components such as ADCs and amplifiers. We prototype our wireless camera using off-the-shelf hardware and show that our design can stream video at up to 13 FPS and can operate up to a distance of 150 feet from the access point. Our COTS prototype consumes 2.36mW. Finally, to demonstrate the potential of our design, we built two proof-of-concept applications: video streaming for micro-robots and security cameras for face detection.
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