60results about How to "Realize real-time switching" patented technology

The invention discloses a multi-copy storage method and a multi-copy storage system for a distributed database system, and belongs to the field of computer software. The multi-copy storage system comprises a main Master node, a standby Master node, a plurality of storage nodes and a connection network. The multi-copy storage method includes steps of 1, storing data in different data pieces; 2, only allowing a user to operate the data in a primary version, and enabling the multi-copy storage system to synchronize change of the data to various copies in real time and guarantee the atomicity; 3, enabling the multi-copy storage system to detect survival conditions of the nodes via synchronous heartbeat detection, and enabling a main Master host to instantly select an available copy to replace the primary version when a certain storage node of the data in the primary version dies; 4, enabling the multi-copy storage system to carry out detection and repair operation for the storage copies regularly, and migrating the data pieces with excessively low quantities of copies to other available storage nodes by means of local storage migration. A main storage model and a standby storage model are adopted for each data piece, and the copies are of completely identical logical structures and are distributed on different physical storage nodes. The multi-copy storage method and the multi-copy storage system have the advantages that the integrity and the availability of the data are protected against the death of optional nodes of the system.

The invention discloses an energy-saving heat-dissipating motor, which comprises a motor casing, on which a rotor is interspersed, one side of the motor casing is fixedly connected with a ventilation sleeve, and the rotor is sleeved with a Two first driving wheels, the first driving wheel is connected to the first driven wheel through the first belt, the first driven wheel is sleeved with a rotating rod, and one end of the two rotating rods respectively passes through the motor housing On the upper and lower sides and extending into the ventilation sleeve, three ventilation openings are opened at equal distances on the top and bottom of the motor casing. In the present invention, through the improvement of the first fan blade, the rotor cooperates with the use of the driving bevel gear and the driven bevel gear to drive the first fan blade to rotate, so that the kinetic energy of the motor itself can be used to dissipate heat, and the effect of energy saving and heat dissipation can be achieved. The second driving wheel and the second driven wheel drive the movable rod to rotate, so that the second fan blade on the movable rod will rotate accordingly.

The invention relates to a control method of a microgrid bidirectional converter based on a virtual synchronous machine and stability analysis thereof. An integrator is added in a damping link of a rotor motion equation, and an angular frequency deviation value is fed back and compensated, so that the error-free control of alternating current subnet frequency in a microgrid off-grid mode is achieved. In consideration of the bidirectional transmission characteristic of the converter, a control target is switched into a direct-current voltage from an alternating-current frequency in real time bychanging a virtual mechanical active power reference value given mode, and stable control of direct-current bus voltage is achieved. By establishing a power inner ring and a voltage/frequency outer ring small signal model, transfer functions of the converter in a frequency control mode and a direct current voltage control mode are respectively solved, and stability analysis is performed. The control method of the microgrid bidirectional converter based on a virtual synchronous machine and the stability analysis thereof can well achieve the frequency error-free adjustment of the frequency andthe stable control of the direct current voltage under the off-grid mode.

The invention discloses an airborne system for mixing and displaying videos in real time. The airborne system comprises an instruction exchange area, a video conversion/decoding module, a frame storage device, a video controller and a power module. The invention relates to the field of video processing and is a specific airborne video real-time mixing technology and an image displaying system framework. The video controller is a core of the whole system and is in charge of communicating with an upper computer, configuring a decoding chip, amplifying video pictures, controlling the frame storage device, controlling input/output videos and driving display and the like. The airborne system disclosed by the invention has the advantages that the video decoding chip can be automatically configured, the dynamic switching of multi-path background video input and real-time amplification of background video pictures are realized, and the inputted foreground and background are mixed and displayed according to parameters provided by the upper computer. Compared with the prior art, the airborne system disclosed by the invention has the characteristics of high real-time performance, small volume, low power consumption, high picture refreshing rate and good video mixing effect and the like.

The invention relates to a vehicle integrated data processing method capable of realizing real-time failure switching, which comprises the following steps: 1. building a system hardware platform; 2. electrifying the system; 3. determining a main control module; 4. establishing a periodic task; 5. determining whether the modules are normally self-checked; 6. starting the application task; 7. determining whether the modules have failure or receive manual control commands; executing the failure processing procedure; 9. executing switching command response; and 10. ending. The invention solves the technical problems that the existing vehicle integrated data processing system and method have low reliability, can not realize real-time switching during failure, and have complicated structure and large volume. Adopting a 1plus 1 backup method, the invention greatly enhances the reliability of the system, can realize the real-time switching of the modules and can ensure simple structure and small volume of the system.

The invention discloses a multi-round voice interaction method and display equipment. The multi-round voice interaction method comprises the steps of: acquiring a first round of interaction voice generated by a user, carrying out the service intention analysis, screening a first round of target service intention if a multi-service intention exists, and generating a first round of prompt text basedon a main instruction word of a non-target service intention; and when the user performs the second round of voice interaction, if the second round of interaction voice is matched with the main instruction word carried in the first round of prompt text, determining that the second round of voice interaction and the first round of voice interaction form a multi-round voice interaction process, atthe moment, performing query based on a service intention corresponding to the matched main instruction word, and generating a second round of prompt text based on the obtained second round of query information. Visibly, according to the multi-round voice interaction method and the display equipment, when the voice interaction has the multi-service intention, the opportunity of self-selection canbe provided for the user through multiple rounds of voice interaction, and the real-time switching of the multi-service intention is realized, so that the information of the multi-service intention ismore simply and conveniently presented to the user, and the user experience is improved.

The invention discloses an integrated semi-coupling cleaning device, which relates to the technical field of coupling processing, and comprises a bottom plate, on which a drive motor is installed, and the front and rear parts of both sides of the upper surface of the bottom plate are welded. There are support plates, and drive rollers are installed on the top of the two support plates on the same side of the bottom plate, and a conveyor belt is set between the two drive rollers. The outer surface of the conveyor belt is equidistantly thermoplastically formed with cylindrical rubber blocks, wherein One end of a transmission roller is connected with the output shaft of the drive motor through a transmission belt, and four support plates are welded on the upper surface of the bottom plate, and the four support plates are all located on the inner side of the support plate. The integrated semi-coupling cleaning device integrates the functions of spraying washing liquid, scrubbing, rinsing, air-drying, and sewage collection, which greatly improves the production and processing efficiency of the semi-coupling, and the cleaning of the semi-coupling is more thorough. , which facilitates the oiling of the half coupling.

The invention provides a four-switch-tube buck-boost converter control method and device, a controller and a storage medium, and relates to the technical field of power electronic control. The methodcomprises the steps of acquiring a signal sampling value of a target port, wherein the target port includes at least one of a first port and a second port, and the signal sampling value includes a voltage sampling value and a current sampling value; generating a control signal according to the signal sampling value of the target port and a pre-acquired preset signal value of the target port, wherein the preset signal value includes a preset voltage value and a preset current value; and based on the control signal, generating a switch tube driving signal to drive the four-switch-tube buck-boostconverter to work. According to the scheme, real-time switching of energy flow is achieved by configuring the preset signal value of the port and adjusting the signal sampling value through the preset signal value, the control method is convenient to operate, rapid and smooth bidirectional switching can be achieved, and energy control efficiency is improved.

The invention relates to the technical field of wheel hub processing, and discloses an aluminum alloy wheel hub processing device that can effectively reduce loss, including a load-bearing base, both sides of the bottom of the load-bearing base are fixedly equipped with load-bearing feet, and the top of the right side of the load-bearing base A vertical plate is fixedly installed, the left side of the vertical plate is fixedly installed with a fixed horizontal plate above the load-bearing base, the side of the vertical plate close to the fixed horizontal plate is provided with a first chute, and the middle part of the inner cavity of the fixed horizontal plate A hydraulic cylinder is fixedly installed, and the bottom of the hydraulic cylinder is fixedly installed with a connecting rod with one end passing through and extending to the bottom of the fixed horizontal plate. The aluminum alloy wheel hub processing device that effectively reduces loss can be used to place the aluminum alloy wheel hub by setting the annular fixing groove, which can replace the manual fixing of the aluminum alloy wheel hub, improving the safety and qualification rate of aluminum alloy processing. It is beneficial to save support and reduce loss.

Embodiments of the invention provide an audio real time switching method and device. The method includes: decoding multitrack original singer audio frequency coding files and accompaniment audio frequency coding files, obtaining multitrack original singer audio frequency data and corresponding accompaniment audio frequency data, adding the multitrack original singer audio frequency data and corresponding accompaniment audio frequency data to a first data queue and second data queue which are arranged in sequence, playing the accompaniment audio frequency data extracted from the second data queue according to the switching operation, switching to play the original singer audio frequency data extracted in the corresponding position from the first data. The real time switching from playing accompaniment to original singer is realized, as the multitrack original singer and accompaniment are respectively stored to the multitrack original singer audio frequency coding files and accompanimentaudio frequency coding files, therefore whether the original singer and accompaniment are both multitrack, and the real time switching and the sound effects of the original singer and accompaniment are realized at the same time.

The invention relates to the technical field of air conditioners, in particular to an adjustable refrigerating device and a refrigeration adjusting method. The adjustable refrigerating device comprises a heat pipe evaporating unit, an evaporative condenser and at least one group of condensing unit, wherein the condensing unit is arranged in an air-cooled environment area; the heat pipe evaporatingunit and the condensing unit are connected to two sides of the evaporative condenser through a first loop and a second loop respectively; the heat pipe evaporating unit is also connected with the condensing unit through a third loop; and the unit areas of the condensing unit and the heat pipe evaporating unit can be adjusted in order to realize variable heat exchange areas respectively. The adjustable refrigerating device is low in energy consumption and high in adaptability, and the running mode and the heat exchange areas of the units can be adjusted flexibly specific to outdoor environmentfactors.

The invention discloses a hub grinding robot with clamping function, which comprises a base, a support column is fixedly connected to the middle of the bottom surface of the base, a groove is opened on the bottom of the support column, and a buffer is fixedly connected to the inner top wall of the groove. In the spring, two symmetrical engaging grooves are opened on the inner side wall of the groove. The hub grinding robot with clamping function can push the extrusion plate to move and effectively clamp the hub, effectively avoiding the sliding of the hub, with good clamping performance, flexible pick and place of the hub, and more convenient to use , can effectively buffer the vibration force generated by the base, has good shock absorption performance, and has a certain anti-skid performance, effectively ensuring the relative stability of the base, good anti-skid performance, ensuring the grinding quality of the wheel hub, and being able to reduce the vibration generated by the motor The heat is effectively discharged, effectively avoiding the burning of the motor, and can effectively block the dust, and the dustproof effect is good.

The invention provides a drive circuit and a liquid crystal display panel. The drive circuit comprises a first drive unit and a second drive unit. The first drive unit contains a common voltage input terminal, a first common voltage output terminal, a second common voltage output terminal, a third common voltage output terminal, a first preliminary voltage output terminal and a second preliminary voltage output terminal; and the second drive unit consists of a first preliminary voltage input terminal, a second preliminary voltage input terminal, a fourth common voltage output terminal, a fifth common voltage output terminal, a sixth common voltage output terminal, and a seventh common voltage output terminal. In addition, the invention also provides a liquid crystal display panel. With the drive circuit and the liquid crystal display panel, adjustment of common voltages at different areas can be realized; and on the basis of no increase of the manufacturing cost, the image quality of the liquid crystal display panel is improved and the manufacturing period of the liquid crystal display panel is reduced.

The invention provides a two-speed multi-winding generator which includes a casing, a rotor and a stator. The rotor and the stator are installed in the casing. The rotor is connected to a prime mover.A stator slot is internally provided with mutually independent high-speed winding, low-speed winding and speed measuring winding. Two sets of corresponding windings with different rotation speeds areset on the stator to solve the problem of voltage variation of the generator in the time that the speed of the prime mover is changed, and the real-time generator rotation speed monitoring is achieved by setting the speed measuring winding. Compared with a common solution for solving a generator two-speed problem, the solution of the invention has the advantages that the number of generators is not increased, a rotation speed sensor is not used, the volume and weight of a system are reduced, the reliability of the system is improved, in addition, by setting the high-speed winding and the low-speed winding at left and right sides of the stator slot, an armature superposition problem of a multi-winding generator is solved, the performance of the generator is improved, and the two-speed multi-winding generator has an excellent promotion value.

The invention discloses an intelligent electromagnetic metasurface controlled by voice recognition, which comprises a digital programmable metasurface and a voice control system, and is characterized in that the voice control system comprises a voice recognition module, a computer and a digital-to-analog conversion circuit; wherein the voice recognition module obtains a recognition voice instruction, processes the recognition voice instruction to form corresponding serial port data and then sends the serial port data to the computer, and the computer receives and converts the serial port data into a format which can be processed by the digital-to-analog conversion circuit and then sends the serial port data to the digital-to-analog conversion circuit. The digital-to-analog conversion circuit generates a corresponding voltage sequence to control the digital programmable metasurface; the function of the digital programmable metasurface is regulated and controlled in real time through voice signals, the functions of wide beams, RCS reduction, vortex waves, beam splitting and the like can be effectively achieved, meanwhile, non-contact intelligent regulation and control are achieved, and wide application prospects are achieved in the aspect of acoustics and electromagnetic fusion communication.