用Edison+web摄像头来做视频监控

有个著名的项目:edi-cam,使用edison、web摄像头,使用ffmpeg,node.js,websocket,jsmpeg等项目来实现WEB视频监控. 项目地址在:https://github.com/drejkim/edi-cam edi-cam edi-cam demonstrates live video streaming on Intel Edison using Node.js and WebSockets. Audio is not supported at the moment. See the demo in action here. The Node.js server is responsible for: Listening for the incoming video stream via HTTP. ffmpeg, a multimedia framework for converting and streaming audio / video, is used to encode[…]

Edison和Galileo Gen1开发板功耗测试

[[{“fid”:”128″,”view_mode”:”teaser”,”fields”:{“format”:”teaser”,”field_file_image_alt_text[und][0][value]”:””,”field_file_image_title_text[und][0][value]”:””},”type”:”media”,”attributes”:{“height”:”124″,”width”:”220″,”class”:”media-element file-teaser”}}]] Edison是一个相当强大的X86开发板,提供有Arduino和Breakout两种底板,通常前者被称为大板,后者成为小板。 功耗是物联网应用中非常在意的一个指标,因此使用创客空间的直流电源对搭配着两种底板情况下的电源消耗情况进行了测试。 手边有Galileo Gen1代,刷好的debian系统,顺手也测试一下。 于是共有测试case四个。 case 1:Edison + Arduino Board  DC端子 12v输入 启动过程电流变化: 0s:20ma 6s:70ms 14s:50ma 37s:50ma 48:30ma 然后一直稳定在30ma~20ma之间(30ma~20ma间跳动,30ma显示约占80%) 那么功耗大约是0.36W~0.24W case 2:Edison + Arduino Board Gpio Vin端口 5v输入 启动电流变化: 0s:60ma 6s:200ma 7s:170ma 36s:60ma 43s:100ma 45s:60ma 然后稳定 60ma 功耗大约是:0.3W case3:Edison + Breakout Board J21 12v输入 启动电流变化: 2s:90ma 9s:70ma 10s:60ma 20s:30ma 然后稳定20~30ma(20~30ma之间跳动,30ma约占90%) 功耗大约是:0.24~0.36W,和Arduino Board相当。 case4:Galileo[…]

Raspberry pi摄像头模块的功耗

在官方的FAQ页面中找到了这样的一段描述,介绍了Raspberry pi常见模块的功耗情况。 The device is powered by 5v micro USB. Exactly how much current (mA) the Raspberry Pi requires is dependent on what you hook up to it. We have found that purchasing a 1.2A (1200mA) power supply from a reputable retailer will provide you with ample power to run your Raspberry Pi for most[…]