Robotic vacuum cleaners and floor washing robots with sweeping and wet mopping functions, doing chores inside homes, is not exactly new. They have been around, for a decade and more in the US—after a robotics engineer from the MIT Artificial Intelligence Lab, Rodney Brooks co-founded iRobot in 1990 with two colleagues. However the company’s first domestic cleaning robot, Roomba was launched only in 2002. Home cleaning robots were first introduced in India in 2012 by a domestic company founded by Rajeev Karwal, under the brand name Milagrow which today has a slate of half a dozen home cleaning robots including some for cleaning glass windows, swimming pools and lawns. They have also cannily adapted the technology to Indian needs, by getting most of their indoor range to do both jhadoo and pocha.
iRobot has finally brought its flagship Roomba products to India a few weeks ago through Bangalore-headquartered Puresight Systems, offering models in 3 series—600, 700 and 800—all looking and working alike, with small variations in vacuum power, and ranging in cost from Rs 32,900 to Rs 69,900. I have been trying out the model 700 for a week. Like all models it has a pair of extractors rotating in opposite directions, to pick up debris from the floor. The extractors are enhanced by a vacuum, which directs the airflow through a narrow slit to collect fine dust. Another horizontally mounted “side spinner” brush sweeps against walls to reach debris not accessible by the main brushes and vacuum.
The robot is powered by a battery that has to be recharged from mains through a docking station, which is the homebase to which it returns after its chores are done. It includes a cliff sensor so that it does not fall down stairs. To create no-go areas, which you don’t want cleaned, you can build infrared ‘virtual walls’, using two additional ‘Lighthouse’ units provided. The robot is programmed by a built-in algorithm that follows a spiral path, cleaning in widening circles, and in another mode, follows the wall, changing its angle if it bumps into an obstacle like a chair leg.
One common problem with floor cleaning robots is that hair on the floor tends to entangle in the rotating parts, slowing it down. But the Roomba has a very simple system to remove and clean the extractors. The Roomba 700 which is a mid range model costs Rs 49,900. The Roomba robots are dry cleaners. For wet mopping, iRobot has another product the Brava 380t for hard floors, which uses reusable cleaning cloths. (Rs 27,900)
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