Web of Things basics

M2M (machine-to-machine) refers to technologies that allow both wireless and wired devices to communicate with each other or, in most cases, a centralized server.

An M2M system uses devices (such as sensors or meters) to capture events (such as temperature or inventory level), which are relayed through a network (wireless, wired, or hybrid) to an application (software program) that translates the captured events into meaningful information (such as the statistics of a vehicle’s usage in OnStar).


Telemetry is a technology that allows remote measurement and reporting of information.

Systems that need external instructions and data to operate require the counterpart of telemetry, telecommand.

Many modern telemetry systems take advantage of the low cost and ubiquity of GSM networks by using SMS to receive and transmit telemetry data.


A wireless sensor network (WSN) consists of spatially distributed autonomous sensors to monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion, or pollutants, and to cooperatively pass their data through the network to a main location.

The more modern networks are bidirectional, becoming wireless sensor and actuator networks (WSANs) enabling the control of sensor activities.


Examples of smarter systems include smart grids, water management systems, solutions to traffic congestion problems, and greener buildings.


IPSO: Internet Protocol for Smart Objects, The IPSO Alliance is an organization promoting the Internet Protocol (IP) for what it calls “smart object” communications. IPSO is a non-profit organization founded in 2008 with more than 50 members from technology, communications and energy companies. The IPSO Alliance advocates for IP networked devices in energy, consumer, healthcare and industrial applications.