A machine vision device is provided usable in conjunction with power equipment machines. By way of example, an array of sensors can be deployed to detect proximity of objects to the power equipment machine, and issue an alert in response to detecting an object within a threshold distance. The alert can be utilized by the power equipment machine to take corrective action to mitigate or avoid running over or striking the object. Sensors having respective fields of view can be arranged along an arc to facilitate machine vision of a spatial volume in a proximity of the machine, and ranging determinations can be coupled with low cost processing devices to facilitate a machine vision solution far more cost effective than other technologies in the art.