5results about How to "Extended availability" patented technology

The invention discloses a projection control method for karaoke sound equipment, the karaoke sound equipment comprises a first screen and a second screen, the first screen is a display screen, the second screen is a projection device.The method comprises the steps that after a system is started, projection control mode setting is obtained, the projection control mode comprises a default opening mode, a default closing mode or an automatic detection mode; when the projection control mode is an automatic detection mode, obtaining distance information in multiple directions in front of the projection device; judging whether a projection environment meeting a preset projection condition exists or not based on the distance information; when the judgment result meets the preset projection condition, controlling the second screen to be in an on state; and when the judgment result does not meet the preset projection condition, controlling the second screen to be in a closed state. The invention provides a projection control method for a karaoke sound box and the karaoke sound box, and solves the problem of poor starting and stopping experience of traditional projection.

The application belongs to the technical field of emergency help equipment, and provides an emergency help signal panoramic projection device, method and terminal, the device can continuously detect the spatial posture and rotating motion state of itself through the environment positioning module, generate corresponding posture data and direction data, the control module can obtain the data and determine the real-time projection pointing angle of the device, and then when the device rotates, the projection control instruction corresponding to the real-time projection pointing angle is generated and sent to the image projection module, so that the image generation unit in the image projection module drives the corresponding rotating transformation of the help image, and the light source in the image projection module irradiates the help image to project the visual help signal which is right and complete. The scheme realizes omnidirectional controllable intelligent projection, can make the help signal cover all directions, at the same time ensures that the projected image can be clearly observed, is more easily identified by the rescuer, reduces the delay caused by signal blur, and improves the probability of being rescued by the help seeker.

The invention provides a power management system and a power management method for a handheld terminal, and belongs to the technical field of power management. The system comprises a battery management terminal, a power management module and a battery pack, wherein the power management module is electrically connected with the battery management terminal, the battery pack and a controller. The power management module obtains battery state parameters from the battery pack and reports the battery state parameters, and the battery management terminal generates and issues a battery parameter configuration file and a current limit configuration file. The power management module updates battery pack configuration parameters according to the battery parameter configuration file, compensates the current charge state, and displays the compensated charge state on the terminal; and according to the current limiting configuration file, the working parameters of the power utilization module of the handheld terminal are limited through the controller. According to the method, the electric quantity estimation and current limiting strategy can be dynamically optimized according to the battery state, the accuracy and smoothness of electric quantity display are improved, and the abnormal shutdown risk of the handheld terminal under the low-temperature, high-load and aging working conditions is reduced.

This disclosure provides a method for correcting overlay errors. The method includes generating a first overlay error based on a first overlay mark, wherein the first overlay error indicates a misalignment between a lower pattern and an upper pattern of the first overlay mark; and generating a second overlay error based on a second overlay mark in response to detecting an anomaly in the first overlay error, and determining, based on the second overlay error, whether the anomaly in the first overlay error is caused by the misalignment between the lower pattern and the upper pattern.

The application discloses a particle furnace without heat exchanger, and relates to the technical field of particle furnaces.The particle furnace without heat exchanger comprises a mounting frame, a vertical furnace body and an oxygen supplement assembly for conveying oxygen into the furnace body are arranged in the mounting frame, the furnace body comprises a bottom furnace chamber, an intermediate furnace chamber and an upper furnace chamber which are sequentially communicated from bottom to top, a combustion chamber is arranged at the bottom of the bottom furnace chamber, and a grate for placing particles is arranged in the combustion chamber.The core structure of the particle furnace is limited, the furnace body is vertically three-sectioned, the bottom furnace chamber, the intermediate furnace chamber and the upper furnace chamber are integrally formed by refractory cast material, the combustion chamber and the grate are arranged at the bottom of the bottom furnace chamber, and primary oxygen supplement, secondary oxygen supplement and tertiary oxygen supplement are arranged, so that the oxygen supplement is graded, the particle fuel combustion is more sufficient, the carbon particles, tar and other impurities which are not completely combusted in flue gas and residual fuel are greatly reduced, the problem of insufficient combustion and energy waste caused by omitting the heat exchanger is solved, flue gas pollutant emission is reduced, and environmental protection is considered.