Abstract: A data processing method performed by a first device includes: generating, in response to first service data satisfying a data uploading condition, a first bit array corresponding to the first service data; encrypting the first bit array through a data key to obtain a ciphertext bit array, the data key being generated by a second device in a data intersection application run in a trusted execution environment of the second device; and transmitting the ciphertext bit array to a blockchain node for forwarding to a second device, for the second device to decrypt, in the data intersection application through the data key, the ciphertext bit array to obtain the first bit array.

Abstract: A hierarchical health index evaluation method for an intelligent substation includes: obtaining a basic health index of a device based on static information and dynamic information of the device; obtaining a device correlation based on a communication connection relationship between the device and another device, and correcting the basic health index of the device based on the device correlation to obtain a health index of the device; obtaining a layer-based health index of a layer based on a device health index and a device importance weight of the layer; obtaining a whole-station health index of an intelligent substation based on a layer-based health index of each layer and a sum of device importance weights of each layer; and regulating the intelligent substation based on a health index of each device in the intelligent substation, the layer-based health index of each layer, and the whole-station health index.

Abstract: A lawn mower includes a blade, a deck assembly, and a drive assembly. The deck assembly is formed with an accommodation cavity configured to at least partially accommodate the blade. The drive assembly includes a drive shaft configured to drive the blade to rotate about a rotation axis. The deck assembly includes a top wall, a side wall, and a protrusion. The top wall is formed with a through hole for the drive shaft to pass through. The side wall is connected to a periphery of the top wall. The protrusion portion is at least partially disposed on the side wall and protrudes from the side wall. A projection of the protrusion portion on a plane perpendicular to the rotation axis is at least partially located within a projection of a cutting region of the blade on the plane. The lawn mower has a strong grass-shredding capability.

Abstract: A mower includes an electric motor, a main machine body, an electronic component, and an operating assembly. The main machine body extends in a forward-backward direction. The operating assembly includes a handle assembly and a first operating member. The handle assembly is rotatably connected to the main machine body and configured to be held to operate the mower to run. The first operating member is rotatably connected to the handle assembly to control a walking state of the mower. The first operating member is formed with a fitting surface fitting with the handle assembly. In response to the first operating member being operated to rotate and approach the handle assembly, the fitting surface is capable of substantially fitting flush with the handle assembly to form a unitary component that is capable of being held.