A Web Connected Smart Sensor

A smart sensor is the convergence of the sensing features of a sensor with the intelligence and decision features of a microcontroller or DSP based microsystem. The communication feature of a smart sensor is compulsory. It must communicate vertically and horizontally too. The vertically communication is down with the process it senses and up with a processing and decision system. The horizontally communication is with other smart sensors. There are several ways for communicating: with direct physical connections, wireless, by Internet or combined. This paper describes an Internet connected smart sensor. The sensed parameter is the temperature but it can be applied to other parameters too. The Web connected smart sensor is made by a TINI platform, a LM75A temperature sensor and the appropriate software. The sensor is connected to the TINI platform through a I2C interface.