A debris collection machine includes a vacuum system (including a suction source operable to provide suction for pulling debris into a receptacle), a ground reference portion, a ground test portion, and a ground-checking module. The ground reference portion is electrically coupled with an electrically grounded reference point, and the ground test portion is electrically coupled with a portion of the vacuum system. The ground-checking module determines a resistance between from the ground reference portion and the ground test portion and prevents or terminates operation of the suction source of the vacuum system when the resistance exceeds a predetermined threshold value, e.g., which may correspond to a risk condition of spark generation that could ignite material in the receptacle.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
McCallum, John Robert Buster; Sinden, Aaron David; Betts, William M.; Fenton, Jordan; Boorman, James E.; Womack, Randal Guy; Koentopp, Cameron J.; and Adams, John, "Debris-Collecting Vacuum Machine with Grounded Safety System and Associated Methods", Technical Disclosure Commons, (April 17, 2020)