Abstract: The present disclosure provides an identity recognition method, including: receiving registration information of a first user; binding a first login password to a first account corresponding to a post; receiving a login request sent by a user terminal; and responding to the login request, and sending data information of the first account binding with a first login password to the user terminal, to make the user terminal display the data information. The present disclosure further provides an identity recognition apparatus, system and a server. According to the identity recognition method, apparatus, system and the server, an account is set to have a corresponding relationship with a post, thus a successor of the post can browse historical-data information of the account corresponding to the post through the login password. Thusly, the user experience is good.

Abstract: The embodiments of the present disclosure provide a cleaning device, the cleaning device including a body and a floor brush. The floor brush is connected to one end of the device body; the device body is provided with a sewage storage box, and the box body of the sewage storage box is at least for storing and/or filtering garbage suctioned by the floor brush. When the cleaning device is tilted or laid flat for use, no sewage may flow back into the motor from the sewage storage box, which prevents causing the motor to stop or be damaged, and ensures a normal use of the cleaning device.

Abstract: The present disclosure provides a cleaning device. The cleaning device may include a machine body, a cleaning liquid tank, and a floor brush, wherein the floor brush may be connected to an end of the machine body, the cleaning liquid tank may be arranged above the floor brush, and the cleaning liquid tank may be configured to provide cleaning liquid for the floor brush or floor. When a user uses the cleaning device for cleaning work, the user may hold the machine body to control a moving direction of the floor brush. In the cleaning device, by setting a cleaning liquid tank on the floor brush, a volume and weight of the machine body can be reduced, which reduces an overall volume and weight of the cleaning device, thereby reducing a load and weight when the user operates the machine body and improving experience of the user during cleaning work.

Abstract: The disclosure relates to the technical field of batteries, and provides a battery and a battery manufacturing method. The battery includes a cell, and the cell includes a cell body and a tab. The tab extends from the cell body, and the tab includes a first solder mark and a second solder mark. The second solder mark covers the first solder mark, and the second solder mark is formed with a circumferentially closed space to expose the first solder mark. That is, when welding the tab and the cover plate assembly, the tab is welded twice, and a hollow second solder mark is formed.

Abstract: A method and system for control of BTM of electric drive bulldozers based on deep learning includes: obtaining a micro-load segment at the current moment in a load spectrum and predicting a micro-load segment at the next moment using a Markov chain model; carrying out a weighting calculation of the segment using the segment at the current moment and a corresponding weight thereof with the predicted segment and a corresponding weight thereof, and then calculating motor speed, motor torque, and a state of charge (SOC) of battery under the segment after being weighted; and taking a real-time battery outlet water temperature, occupant cabin temperature, occupant cabin target temperature and ambient temperature as well as the motor speed, motor torque and SOC, so as to obtain a control strategy of the electric compressor speed, and further obtain a method for control of BTM of the electric drive bulldozer.

Abstract: A method and a system for controlling combustion of a natural gas engine. The method includes: determining, based on a current operation parameter of a natural gas engine, an operation state of the natural gas engine, and calculating a total injection quantity of natural gas and pilot diesel required by the natural gas engine in the operation state; adopting a direct injection diffusion-combustion mode in a case that the operation state is an idle state or a low load state; adopting a natural gas homogeneous hybrid active control compression-ignition mode in a case that the operation state is a medium load state; configuring the total injection quantity into three parts including a compression-ignition natural gas injection quantity, a pilot diesel injection quantity, and a diffusion-combustion natural gas injection quantity in a case that the operation state is a high load state, and sequentially injecting them into a combustion chamber.

Abstract: A ceiling lamp may include: a base plate and a light emitting component arranged on the base plate. The ceiling lamp further includes a diffusing structural member, arranged outside the light emitting component and configured to evenly diffuse light emitted by the light emitting component; and a light transmitting structural member, arranged outside the diffusing structural member. The light transmitting structural member is provided with a microprism structure, and is configured to allow the light evenly diffused by diffusing structural member to form into a pattern corresponding to the microprism structure on the light transmitting structural member.

Abstract: A ceiling lamp may include: a base plate and a light emitting component arranged on the base plate. The ceiling lamp further includes a diffusing structural member, arranged outside the light emitting component and configured to evenly diffuse light emitted by the light emitting component; and a light transmitting structural member, arranged outside the diffusing structural member. The light transmitting structural member is provided with a microprism structure, and is configured to allow the light evenly diffused by diffusing structural member to form into a pattern corresponding to the microprism structure on the light transmitting structural member.