如何使用Sigfox技术连接到物联网

　　如何使用Sigfox技术连接到物联网

　　物联网的最重要的挑战之一是能够轻松地添加无线传感器节点和成本效益。无线链路需要低功耗，使节点可以运行在一个单一的硬币细胞多年，但有一个长期的范围，使成千上万的节点可以连接到网关收集数据。

　　这是一个重大的挑战。Sigfox在法国开发了一种低功耗无线协议，网络实施，和云计算基础设施，可以用来连接数以百万计的低功耗无线设备。低功耗协议结合网关类似于蜂窝电话系统网络，但不同的机器对机器的应用在蜂窝网络，SIGFOX网络致力于物联网应用，如健康、能源监控、温湿度检测和安全监测。

　　SIGFOX has optimized its network implementation for the low data rates unidirectional aspects of these applications. The network supports rates of 100 bit/s from the node to the gateway， with data transfers limited to 140 times a day. This is still sufficient for monitoring applications， but allows an energy meter， for example， to operate with a link power budget of just 50 microwatts rather than one watt for a cellular network. Focusing on uploads also allows the design of the gateway to be shifted to have a more sensitive receiver that can handle data from thousands of nodes.