光谱传感物联网节点的无线通信接口设计

Design of Wireless Communication Interface Used in Spectral Sensing IOT Node

根据近红外光谱数据的格式和特点,设计一种光谱传感物联网节点的无线通信接口,实现近红外光谱数据从物联网节点到电脑上位机的无线传输。主要进行了无线通信接口的硬件电路和软件程序设计,使用C#语言编写了接收端上位机,并借助单色仪进行了功能验证。实验结果表明,该无线通信接口的传输速率和通信距离可以满足物联网节点的近红外光谱数据传输应用需求,物联网节点一帧光谱数据的采集和传输时间小于1秒,总体功耗小于300 mW,最大通信距离大于150米,具有微型化和低功耗的特点。

Communication interface is vital constituent part in IOT node and it should be designed based on data types and data structures. Wireless communication is playing a more and more important role in many occasions for its mobility, flexibility, easy extension and low cost. We present here our latest work in developing a wireless communication interface used in spectral sensing IOT node. The near-infrared spectral data can be acquired from a node to the computer spectral software using wireless transmission mode. The spectral software can save the spectral data and draw spectral curve on the screen, which is designed using C language. An automatic grating monochromator was used to test and verify the function of this wireless communication interface. The experimental results show that the transmission speed and the communication distance of wireless communication interface meet the requirements of spectral sensing IOT application.