Brief Introduction to the development of hardware and software for wireless sensor nodes

Wireless sensor networks are emerging and have great potential for development. In the course of a new technological development, various related energy design, energy-saving solutions, optimization problems, and security issues need to be fully considered. This article briefly introduces the development process of wireless sensor network software and hardware.

The Research on wireless sensor networks is inseparable from the software and hardware platform. The software and hardware of wireless sensor nodes restrict the development of the research.

Currently, practical wireless sensor nodes mainly include Smart Dust, Mica, and Telos nodes. Mica nodes are widely used in academic research.

The Mica series node is a test node developed by the University of California Berkeley for sensor network research demonstration platform. On this demonstration platform, software and hardware are developed in parallel.

The figure shows the software and hardware development history of the wireless sensor nodes with a spiraling platform. Because the hardware and software of the platform are open, it becomes the most important experimental platform for studying sensor networks. Mica series nodes include Wec, Renee, Mica, Mica2dot, and Spec. Among them, Mica and Micadot nodes have been established by Crossbow in 1995 and are specialized in the wireless sensor industry.

To effectively utilize the resources of sensor networks, researchers at UC Berkeley designed a sensor network-oriented TinyOS operating system through comparison, analysis, and practice.

For Wireless Sensor node software and hardware, TinyOS is an open source embedded operating system. Its basic method is to define a series of very simple component models, so it has a high degree of modularity, this allows you to quickly implement various applications. Each component completes a specific task. The entire operating system is basically composed of a series of component models.

TinyOS applications are all based on the event-driven model and use Event-triggered wake-up sensors. When the system wants to complete a task, it will call the event scheduler, the event scheduler then calls various components in sequence to efficiently and orderly complete various functions.