Abstract: Some aspects of the disclosure provide a method of device data processing. In some examples, a target image that is collected by a target camera component of a target device is obtained. A component imaging feature of the target camera component is extracted from the target image. The component imaging feature reflects photo response non-uniformity of the target camera component during imaging and is extracted based on high-frequency noise components in the target image with frequencies higher than a frequency threshold. A device fingerprint of the target device is generated based on the component imaging feature. Apparatus and non-transitory computer-readable storage medium counterpart embodiments are also contemplated.

Abstract: A traction drive elevator, comprising: an elevator car, a pair of guide rails, a counterweight, a traction drive motor comprising a housing, a stator, a rotor and a traction sheave; wherein the guide rails are disposed in a hoistway; both ends of the housing are symmetrically fixed to a side wall of the hoistway; the housing operates as a bearing beam; and the elevator car and the counterweight are suspended on the traction sheave of the traction drive motor via a plurality of wire ropes. Since the traction drive motor occupies no additional vertical space in the hoistway, space utilization ratio of the vertical space in the hoistway is increased, the height of the top floor is decreased, and building materials are saved.

Abstract: Provided is an elevator car frame, comprising: an elevator cage, a main elevator car frame comprising a pair of main columns, an upper main beam and a lower main beam, and a pair of diversion sheaves; wherein the main columns are disposed on both sides of the elevator cage; the upper main beam is disposed above the elevator cage; the lower main beam is disposed below the elevator cage; the diversion sheaves are disposed on one side of the upper main beam; and a line connecting centers of the diversion sheaves is parallel to the upper main beam. The invention features increased working space, reduced height of the elevator car roof, and lower cost.