DASH7: Sensing On The Move
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DASH7在2009年成立,目前拥有包括美国国防部在内的20个成员。
DASH7使用433MHZ频段,与使用2.4G频段的Low power wifi、ZigBEE等技术相比拥有更强的穿透能力和传输距离。
DASH7目前多用于货物在运输过程中的跟踪,譬如GlobalTrak 公司用DASH7 cargo tags 通过蜂窝网络追踪货物. SAVI 利用DASH7和依星系统从卫星上追踪物品。
Benefits of DASH7 include:
- 远距离传输(可达2 km)和穿透能力(墙体、地板、水)
- 低功耗,长电池使用寿命(几年以上)
- 最大传输率 200kbps
- 支持标签之间或者多跳方式通,支持加密方式
- 跟踪运动物体时拥有低时延
- 在全球有效的免费频段工作 433 MHz
原文:http://www.dailywireless.org/2010/08/14/dash7-sensing-on-the-move/
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