Abstract: This application relates to an annular motor, which includes a circular ring-shaped inner ring, a circular ring-shaped outer ring, and a junction box. The inner ring is sleeved in the outer ring, and at least one ball group or at least one roller group is installed between the inner ring and the outer ring. One of a coil winding set and even numbers of permanent magnets is installed on an outer side of the inner ring, and the other one of the coil winding set and the even numbers of permanent magnets is installed on an inner side of the outer ring. The junction box is installed on an inner wall of the inner ring or an outer wall of the outer ring, and a lead line of the coil winding set is connected to a binding post in the junction box.

Abstract: A gesture recognition method, apparatus and system based on coupling capacitance, which are configured to solve the technical problem in the prior art of it not being possible to recognize a complex gesture due to the fact that the coordinates of a manipulation body on a three-dimensional plane cannot be determined.

Abstract: A gesture recognition method, apparatus and system based on coupling capacitance, which are configured to solve the technical problem in the prior art of it not being possible to recognize a complex gesture due to the fact that the coordinates of a manipulation body on a three-dimensional plane cannot be determined.

Abstract: A detection device is provided and the detection device includes: a body, including a first groove and a first opening; the first opening is on a first surface of the body and in communication with the first groove; a collector, configured to be at least partially accommodated into the first groove in a rotatable manner and being capable of rotating to allow at least part of the collector to extend out of the first opening in a process of detection; a test paper supplier, disposed on the first surface and configured to provide a test paper on a side of the first opening away from the first groove in the process of detection so as to collect a detection sample; and a detector, disposed on the first surface and configured to detect the test paper that has collected the detection sample.

Abstract: A detection device is disclosed and the detection device includes: a body, including a first groove and a first opening; the first opening is on a first surface of the body and in communication with the first groove; a collector, configured to be at least partially accommodated into the first groove in a rotatable manner and being capable of rotating to allow at least part of the collector to extend out of the first opening in a process of detection; a test paper supplier, disposed on the first surface and configured to provide a test paper on a side of the first opening away from the first groove in the process of detection so as to collect a detection sample; and a detector, disposed on the first surface and configured to detect the test paper that has collected the detection sample.