Archive for September 3rd, 2008

Detecting presence with infrared and sonar sensors

Wednesday, September 3rd, 2008

The Wireless Sensor Network Research Group has published a couple of articles regarding the detection of people using WSN. In the first one they use the infrared radiation which provides a PIR sensor to detect movement of objects which temperature is over an specific threshold. In the second one they have integrated an ultrasonic sensor which emits ultrasounds and receives their echoes, this method is able also to predict the exact distance to the object in the same way bats do.

wsn-general | Comments (0)

Landslides Early Warning System

Wednesday, September 3rd, 2008

The frequency with which landslides ravage Kerala, India, brought Maneesha Ramesh and her colleagues at Amrita School of Engineering (ASE), near Quilon, to the sleepy town. Together with several European universities and firms, they are installing a network of wireless sensors that can pick up the slightest of rumblings in the earth in order to alert the people to an impending landslide in real time. “If we can pick up the right signals, we stand a good chance of informing the people about any threat days in advance,” says Maneesha.

More info here.

wsn-general | Comments (0)