Abstract: A system and a method are provided to create an indoor thermal environment based on impinging jet ventilation (IJV) and ductless personalized ventilation (DPV), the system includes an IJV duct installed on a wall of a room and a DPV device installed on a table. An air inlet of the IJV duct is connected to an air conditioning system and an air outlet of the IJV duct is close to ground. An upper duct and a lower duct of the DPV device are disposed on two opposite sides of a tabletop, the upper duct is provided with an air supply panel, the lower duct is provided with a duct fan with an air supply volume being adjustable, and the duct fan is configured to send air absorbed from a ground air lake to a user's face area through the air supply panel of the upper duct.

Abstract: Disclosed is an energy storage and steam generation system, including an electrode steam boiler. One side of the electrode steam boiler is connected with a boiler deaerator through a pipeline. A pipeline A is arranged at the top of the electrode steam boiler. The pipeline A is connected with a steam superheater, and an outlet of the steam superheater is provided with an external steam supply outlet pipeline. A molten salt steam generation bypass pipeline and a pipeline B are arranged on the steam superheater. One end of the molten salt steam generation bypass pipeline is connected to the steam superheater. A low-temperature molten salt storage tank is connected to the pipeline B, and a high-temperature molten salt storage tank is connected to the low-temperature molten salt storage tank through a pipeline. The other end of the molten salt steam generation bypass pipeline is connected to the high-temperature molten salt storage tank. Meanwhile, a generation method is further disclosed.

Abstract: A system and method for nighttime lighting control and danger monitoring and alarming are provided. The system includes a data acquisition system, an information processing system, and a terminal control system. The data acquisition system is configured to acquire video information in a room and a voice content of a person in the room, and transmit the video information and the voice content to the information processing system; the information processing system is configured to obtain voice command information based on the voice content and age information and safety state information of the person based on the video information, and transmit the voice command information, the age information and the safety state information to the terminal control system; and the terminal control system is configured to control a terminal lighting fixture, and perform capturing of an image of the person and perform voice alarming according to the safety state information.

Abstract: A method for enriching niobium and titanium in a mineral containing iron, niobium, and titanium, includes: reacting raw materials comprising 1 part by weight of a mineral containing iron, niobium, and titanium, 0.1-0.8 part by weight of a nickel-containing substance and 0.2-1 part by weight of carbon at 800-1500° C. to obtain a nickel-iron alloy and a niobium-titanium rich slag, where an amount of the mineral containing iron, niobium, and titanium is counted in terms of iron element, and an amount of the nickel-containing substance is counted in terms of nickel element. The nickel-containing substance is one or more selected from the group consisting of oxides of nickel and nickel minerals.

Abstract: A construction site safety monitoring system based on computer vision is provided. It includes a data acquisition system for collecting video information of personnel and operation platforms on construction site in real time; an information processing system for detecting and distinguishing the personnel and the operation platforms in the video information, intercepting personnel feature images and video of tilted operation platform whose personnel facial temperature and inclination angles after calculation are greater than or equal to preset values as a personnel safety incident and a platform safety incident respectively; and a terminal reminder system for receiving information of at least one the personnel safety incident and the platform safety incidents and providing a reminder.

Abstract: Indoor personnel information identifying apparatus and method for assisting an air conditioning system of on-demand air supply are provided, the apparatus includes a data acquisition device, an information processing device and an information display device, the data acquisition device is configured to acquire weight information and shoe image information of personnel in real time, the information processing device is configured to predict an total calorific value of indoor personnel according to a real-time number of indoor personnel and obtain recommended air supply parameter information for the air conditioning system according to the total calorific value, the information display device is configured to receive and display personnel information processed by the data acquisition device and the information processing device and the recommended air supply parameter information.

Abstract: The present application provides a screen projection method, a receiving end device, and a sending end device. The receiving end device performs active wireless scanning and searching on the sending end device, and when the sending end device is scanned, establishes a wireless connection with the sending end device; and once the wireless connection is established, the receiving end device automatically sends a screen projection code to the connected sending end device, and the sending end device may prompt a user to perform a screen projection operation by means of displaying the screen projection code. In this process, there is no need for the user to perform complicated manual operations, the sending end device can automatically acquire the screen projection code, and prompts the user to perform the screen projection operation in a timely manner, thereby improving the timeliness of the screen projection operation.

Abstract: A method for data obtaining and a communication device are provided. The method includes: setting a data obtaining mode to a first data obtaining mode; receiving at least one beacon frame and at least one null frame from a wireless access device; determining a first quantity and a first ratio according to the at least one beacon frame and the at least one null frame received; and switching the data obtaining mode from the first data obtaining mode to a second data obtaining mode, in response to determining according to the first quantity and the first ratio that a switching condition is satisfied.

Abstract: A vehicle navigation image synthesis method includes: acquiring M sampling images; storing N sampling images, a value of N being determined according to a speed of a target vehicle, a position of the target vehicle, and a following distance of the target vehicle; determining a plurality of sampling points of each sampling image of the N sampling images; determining first coordinates of each sampling point of the plurality of sampling points of each sampling image; mapping the first coordinates of each to the reference coordinate system to determine a second coordinate of each sampling point; and synthesizing sampling points of the N sampling images according to second coordinates of the sampling points of the N sampling images to determine a target image.

Abstract: A dust cover has improved operability for attachment and detachment. A power tool to which a disk tool is attachable includes an electric motor including a motor shaft, a housing accommodating the electric motor and having an inlet to draw outside air, a dust cover being a plate including a filter covering the inlet and being attachable to and detachable from the housing, a grip extending from the housing in a direction perpendicular to the motor shaft and located between the disk tool and the inlet in a direction in which the motor shaft extends, and a spindle coaxial with the motor shaft, protruding from an end of the housing to receive the disk tool, and rotatable by the electric motor.

Abstract: The present application provides a screen projection method, a receiving end device, and a sending end device. The receiving end device performs active wireless scanning and searching on the sending end device, and when the sending end device is scanned, establishes a wireless connection with the sending end device; and once the wireless connection is established, the receiving end device automatically sends a screen projection code to the connected sending end device, and the sending end device may prompt a user to perform a screen projection operation by means of displaying the screen projection code. In this process, there is no need for the user to perform complicated manual operations, the sending end device can automatically acquire the screen projection code, and prompts the user to perform the screen projection operation in a timely manner, thereby improving the timeliness of the screen projection operation.

Abstract: A system and a method are provided to create an indoor thermal environment based on impinging jet ventilation (IJV) and ductless personalized ventilation (DPV), the system includes an IJV duct installed on a wall of a room and a DPV device installed on a table. An air inlet of the IJV duct is connected to an air conditioning system and an air outlet of the IJV duct is close to ground. An upper duct and a lower duct of the DPV device are disposed on two opposite sides of a tabletop, the upper duct is provided with an air supply panel, the lower duct is provided with a duct fan with an air supply volume being adjustable, and the duct fan is configured to send air absorbed from a ground air lake to a user’s face area through the air supply panel of the upper duct.

Abstract: A system and method for nighttime lighting control and danger monitoring and alarming are provided. The system includes a data acquisition system, an information processing system, and a terminal control system. The data acquisition system is configured to acquire video information in a room and a voice content of a person in the room, and transmit the video information and the voice content to the information processing system; the information processing system is configured to obtain voice command information based on the voice content and age information and safety state information of the person based on the video information, and transmit the voice command information, the age information and the safety state information to the terminal control system; and the terminal control system is configured to control a terminal lighting fixture, and perform capturing of an image of the person and perform voice alarming according to the safety state information.

Abstract: The present application provides a screen projection method, a receiving end device, and a sending end device. The receiving end device performs active wireless scanning and searching on the sending end device, and when the sending end device is scanned, establishes a wireless connection with the sending end device; and once the wireless connection is established, the receiving end device automatically sends a screen projection code to the connected sending end device, and the sending end device may prompt a user to perform a screen projection operation by means of displaying the screen projection code. In this process, there is no need for the user to perform complicated manual operations, the sending end device can automatically acquire the screen projection code, and prompts the user to perform the screen projection operation in a timely manner, thereby improving the timeliness of the screen projection operation.

Abstract: Indoor personnel information identifying apparatus and method for assisting an air conditioning system of on-demand air supply are provided, the apparatus includes a data acquisition device, an information processing device and an information display device, the data acquisition device is configured to acquire weight information and shoe image information of personnel in real time, the information processing device is configured to predict an total calorific value of indoor personnel according to a real-time number of indoor personnel and obtain recommended air supply parameter information for the air conditioning system according to the total calorific value, the information display device is configured to receive and display personnel information processed by the data acquisition device and the information processing device and the recommended air supply parameter information.

Abstract: Temperature-controlled mattress control system and method based on sleep posture detection are provided. The control system includes an information collecting unit, an information processor and an output instruction unit. The information collecting unit is used to collect a temperature parameter of a human body during sleeping, video information, and a temperature parameter of a temperature-controlled mattress. The information processing unit receives information collected by the information collecting unit, calculates a sleep posture value K, a thermal sensation value P and a facial skin thermal value Q to obtain a final estimated thermal sensation, and determines setting temperature variation of the temperature-controlled mattress based on the temperature parameter of the temperature-controlled mattress.

Abstract: A construction site safety monitoring system based on computer vision is provided. It includes a data acquisition system for collecting video information of personnel and operation platforms on construction site in real time; an information processing system for detecting and distinguishing the personnel and the operation platforms in the video information, intercepting personnel feature images and video of tilted operation platform whose personnel facial temperature and inclination angles after calculation are greater than or equal to preset values as a personnel safety incident and a platform safety incident respectively; and a terminal reminder system for receiving information of at least one the personnel safety incident and the platform safety incidents and providing a reminder.

Abstract: A reciprocating tool easily supplies a lubricant, such as grease (lubricating oil), to a mechanism for reciprocating a slider, and prevents a lack of lubricant. A reciprocating saw as a reciprocating tool includes a motor, a reciprocating conversion mechanism that converts rotation of the motor to reciprocation, a slider connected to the reciprocating conversion mechanism and being reciprocable, and a slider guide that supports the slider in a reciprocable manner and includes a lubricant-passage member in contact with the slider to allow passage of at least part of a lubricant through the lubricant-passage member, and a lubricant reservoir located adjacent to the lubricant-passage member to store the lubricant.