Kerryn Harrington, global product manager at Emerson, demonstrates how easy it is to use the latest Branson Polaris ...

The smart water controller for metro water supply lines described in this work makes use of a relay, an ultrasonic sensor, a flow sensor, a solenoid valve, GPS, and GSM. The planned system is intended ...

In order to solve the collision problem of quad-rotor UAV with low flight altitude the method to calculate the distance between the obstacles and UAV by using the ultrasonic sensors is proposed. And ...