Abstract: A self-propelled floor processing device with an optical distance measuring device for detecting a distance between the floor processing device and an obstacle in the environment. The distance measuring device has a first triangulation device with a first light source, a first light receiver and a first lens, a second triangulation device with a second light source, a second light receiver and a second lens, and an evaluation device. Each lens bundles light of the light source reflected by an obstacle in the direction of the allocated light receiver, and images it on an imaging location on the light receiver. The evaluation device determines a distance to the obstacle based on the imaging location. The first triangulation device detects an obstacle in a close distance range to the floor processing device, and the second triangulation device detects an obstacle in a long distance range to the floor processing device.

Abstract: A method for operating a self-propelled cleaning device is proposed, wherein the cleaning device comprises a preferably hinged cover and a distance meter for measuring the distance of the cleaning device from objects in its environment. According to the invention, the distance meter is used to detect an open position of the cover.