Window Cleaning Robot
Modern buildings with stunning glass facades require frequent cleaning for both aesthetic and safety reasons. Window cleaning is an essential part of this maintenance. This article examines some of the key issues relating to using robots for this task and suggests some approaches that could lead to a solution.
The captivating drama that unfolded on Wednesday as two window washers clung to a scaffolding dangling outside the 68th floor of 1 World Trade Center prompted many to wonder: Why do people descend from skyscrapers to rub soapy water on windows and wipe them off with a squeegee when a few clicks on a smartphone can solve almost any problem?
Several companies have developed robotic systems that can take over this chore. Typically, they are wheeled robots that use different methods of climbing vertical surfaces. Some use a series of wheels or tracks, while others have climbing arms that grip the surface with suction and then hold on for traction. The technology varies, but the common thread is that the robots have to be able to climb and remain attached to a window without falling off.
What Is the Maintenance Required For a Window Cleaning Robot?
As with any machine, a window cleaning robot requires some level of maintenance in order to continue functioning properly. Some of this involves routine checks, and some of it involves addressing specific failure modes that can occur. Most of the maintenance tasks are relatively straightforward, but some require special equipment or specialized training.
To begin, the user should make sure that the cleaning fluid reservoir is fully stocked and that the microfiber pads are clean. Once this is done, the device should be turned on and placed against the surface of the window. The user should then activate the cleaning process either through the robot’s controls or through a compatible mobile app. The device will then automatically map out the surface of the window and calculate the most effective cleaning route.
The majority of window cleaning robots are now powered by motor-powered suction rather than magnetic connectivity, and this is a significant improvement in performance. It allows the robot to move more quickly, leave fewer streaks, and work on a wider range of surfaces. However, magnetic connectors are still an option on some models.
Most window cleaning robots now have backup batteries that can keep the device attached even if the primary power source fails. This dramatically reduces the chance of a fall, but it is important that the backup battery be kept charged and that users understand what to do in the event of a power failure or other critical error. Some devices also have indicators that can be used to alert the user of potential problems. These usually consist of beeps and LEDs, although some have begun to utilize voice notifications.
The HOBOT-388, for example, has a small LED that glows yellow until the internal UPS battery is charged. Once this happens, it will glow green. Additionally, it has a detailed user manual that specifies the knot to use to connect the safety tether in order to ensure that it will not come loose during a fall.