92results about How to "Avoid redesign" patented technology

A synthetic jet device includes a housing, a connector within the housing configured to communicate with an exterior power source, driver electronics within the housing, a first membrane within the housing, and a second membrane within the housing.

The invention discloses a system for the three-dimensional interactive virtual arrangement of a large-scale artistic performance, which enables a user to freely establish and select performance elements comprising performers, props, costumes, lighting and the like required to be edited in a three-dimensional performance scene, set the attributes and the actions of the performance elements and theoccurrence time and the occurrence sequence of the actions, and see dynamic simulation results in real time. The system achieves the simulations of the performance formation and the performance actions of large-scale performing groups in the content of the large-scale artistic performance, and the modeling and the simulations of the performance elements of the props, the costumes, the lighting andthe like; the system also provides a performance material library containing three-dimensional models of the performance elements of the costumes, the props, the lighting and the like and the commonperformance actions; besides, the system achieves the digitalization and the persistence of the creation content of the performance, namely the work products of creative personnel are required to be capable of being stored, modified and reused digitally. The establishment and the application of the system can greatly improve the working efficiency of the creative personnel, improve the arrangementquality, and achieve great economic benefits with a smaller cost.

The invention discloses an antenna array module. More than two antenna units are arranged on a surface, which two power division circuits are arranged, of a feeding network circuit board, a filter isarranged on a surface, which two coupling circuits are arranged, of the feeding network circuit board, each power division circuit is provided with an input end and a plurality of output ends, the plurality of output ends of one of the power division circuits is used for performing polarization feeding on one of the antenna units at -45 degrees, the plurality of output ends of the other power division circuit are used for performing polarization feeding on one of the antenna units at +45 degrees, each coupling circuit is provided with a radio frequency input end and an output end, the output end of each coupling circuit is electrically connected with the input end of one of power division circuits, the filter is at least provided with two output ends, and the two output ends of the filterare electrically connected with the radio frequency input end of one of the coupling circuits. The invention also discloses a base station antenna. Integration and modularization are achieved, the expansibility is improved, an installation structure and a connection structure are simple, the antenna array module is easy to debug and maintain subsequently, and the manufacturing cost and the application cost are reduced.

The invention discloses a method for treating a back cavity-perforated plate-type casing treatment method. The method comprises the following steps of: designing a casting treater which only comprises an annular back cavity and is provided with a circular hole or an oblique groove perforated hole; and arranging a back cavity-perforated plate-type casing treater at the front end of the rotor inlet of an axial-flow air compressor and covering the back cavity-perforated plate-type casing treater on a position, which corresponds to the front edge part of a rotor blade, of the casing. In the back cavity-perforated plate-type casing treatment method, self-adaptive flow is formed in the back cavity, unsteady shedding vortex is produced on a perforated plate, and the energy of low-frequency disturbance waves in the flow field of the air compressor can be absorbed and dissipated effectively by the interaction of waves and the vortexes and nonlinear amplification of stall inception is suppressed, so that the occurrence of stall inception in the air compressor can be delayed and the stable working range of an air compressor system is expanded; moreover, the mainstream flow field structure of the air compressor is not influenced directly, so that reduction in pressure ratio and efficiency loss of the air compressor system are not caused, a simple and compact structure is achieved and the limiting requirement of engineering on casing size can be met.

The invention discloses a low-power-consumption polymer thermo-optical switch with an air isolating groove structure and a manufacturing method of the low-power-consumption polymer thermo-optical switch and belongs to the technical field of manufacturing of polymer thermo-optical switches. The low-power-consumption polymer thermo-optical switch is composed of five portions including a substrate (1), a SiO2 lower coating (2), a waveguide core layer (3), a waveguide upper coating (4) and micro heating electrodes (5) from bottom to top, the micro heating electrodes (5) are positioned on a waveguide arm of a waveguide interaction area (103), the waveguide core layer (3) is of a Mach-Zehnder interferometer (MZI) type structure, and the waveguide upper coating (4) of the waveguide interaction area (103) is etched to be of the air isolating groove (9) structure by taking the micro heating electrodes (5) as covering films. Redesigning of structures and sizes of a waveguide and the electrode is avoided, and only a dry etching technology is needed to perform one-step etching operation on a device, in other words, power consumption of the device can be effectively lowered. Power consumption of the manufactured thermo-optical switch can be lowered to 6.5mW and is lowered by 45% than that of the device without adopting the air isolating groove structure.

The invention relates to a navigation method and navigation equipment. The navigation method comprises: obtaining road traffic information; selecting a route from at least one optional route between a starting place and a destination; judging whether a congestion section exceeding the scheduled length exists in the selected route based on the obtained road traffic information; if yes, selecting a route from other optional routes once again; and judging whether the congestion section exceeding the scheduled length exists in the selected route once again until the number of the rest optional route is zero, if not, determining the selected route as a navigation route. The navigation method also comprises: judging whether the congestion section which exceeds the scheduled length exists in the route at regular time in the process of travelling in accordance with the navigation route; and if yes, sending a congestion hint to users. By utilizing the method and equipment provided by the invention, whether congestion really exists can be determined more accurately so as to more accurately plan the navigation route and provide users with high-quality service.

The invention discloses a message forwarding method and equipment which are applied to an L2TP (Layer-2 Tunneling Protocol)-based three-layer branch network. An LAC (L2TP Access Concentrator) obtains the client-side addresses distributed by an LNS (L2TP Network Server) during the process of establishing a session between the LAC and the LNS, and records the client-side addresses as private network source addresses, wherein the number of the client-side addresses is applied by the LNS; and when service terminals need to access a headquarters server, the recorded private network source addresses are distributed to corresponding service terminals, and the service terminals carry out communication with the headquarters server through two-layer IP (Internet Protocol) packages. With the adoption of the message forwarding method and the message forwarding equipment, the pressure of a headquarters router in the maintenance of a plurality of VPNs (Virtual Private Networks) can be lowered, and the trouble of coordinating the re-planning of the IP address fields of a plurality of branch mechanisms is avoided.

The invention discloses an iterative FFT (Fast Fourier Transform)-based quick MIMO (Multiple Input Multiple Output) radar waveform synthesis method, and aims to solve the problems that a current method, which can not quickly synthesize the waveform meeting empty domain and time domain property. The realization process comprises the following steps: setting an expected emission directional pattern of a radar according to the objective information of a radar return, and determining a discrete azimuth angle based on the inverse Fourier transform relation of the emission directional pattern with a waveform matrix; obtaining a constant modulus waveform matrix of the radar in a way that an iterative FFT manner is adopted to synthesize the directional patterns according to the expected emission directional pattern; utilizing the constant modulus waveform matrix to construct a phase shift constant modulus waveform matrix; and utilizing the iterative manner to optimize sub pulse initial phase of the phase shift constant modulus waveform matrix so as to improve the signal self-correlation property in the objective direction, and finally obtaining the synthetic waveform. According to the invention, the method realizes on-line waveform design and can be used for multi-objective tracking of the MIMO radar.

The invention provides a shell structure of an automobile body control module (BCM). The shell structure consists of an upper cover and a lower cover, wherein a circuit board is arranged between the upper cover and the lower cover; the upper cover is fixed on an automobile frame through a fixing support; the upper cover is in interference fit with the fixing support, thus connecting fastener components and assembly processes thereof are omitted; notches of electrical couplers on a shell achieve common mode through additionally arranging embedded lumps on a plastic mould, thereby meeting different circuit board assembly requirements; reinforcing ribs in the upper and lower covers can be used for enhancing the integrated intensity of the shell, reducing the shell deformation caused by high temperature, low temperature, vibration and impact, eliminating the resonance vibration brought by deformation, reducing the automobile noise, prolonging the service lives of the shell parts of the BCM, improving the reliability of electron components in the MCM and prolonging the service life of the BCM; drain holes are arranged in the shell and are used for preventing water accumulated in the shell from causing the function invalidity of the BCM; under the condition that a certain distance exists between an automobile body fixing point and a BCM placement position, through assembling different installing supports, the installation reliability of the BCM and an automobile body also can be ensured.

The invention provides a synthetic-aperture-radiometer-based distributed digital interferometer system. The system comprises a plurality of sub array modules, a plurality of inter-array modules, and a digital distribution aggregation hub module. According to the distributed digital interferometer system, all channels in a radiometer receiver are distributed to all sub array modules according to the set number; all the sub array modules carry out digital collection of distributed data in all channels and complete data autocorrelation in channels and data cross-correlation calculation between channels; the digital distribution aggregation hub module distributes the digital signals collected by the sub array modules combined in pairs to all the inter-array modules and receives data correlation calculation results of the sub array modules and the inter-array modules; and the inter-array modules complete data cross-correlation calculation of channels in pairs between the sub array modules. Using the system provided by the invention, the massive interference correlation calculation can be split into multiple groups of intra-sub-array correlation and inter-array correlation calculation, so that the system design is simplified and the system structure is optimized.

A method for improving the process capability comprises the steps as follows: a correlation test point is selected; the thickness of a gate oxide of the correlation test point is obtained; the corresponding threshold voltage is evaluated according to the thickness of the gate oxide; corresponding ionic concentration of a lightly doped drain (LDD) is selected for ion implantation according to the evaluated threshold voltage; and the threshold voltage evaluating step and the ion implantation step are performed repeatedly until the threshold voltage tends to normal distribution. The method adjusts the ion implantation concentration through the current measuring thickness of the gate oxide so as to lead the threshold voltage among various batches to tend to normal distribution, so that standard deviation is reduced, the process capability is improved, the redesign of the processing procedure can be avoided, a lot of manual labor and time can be saved, and the production efficiency is improved.

The invention discloses a communication station planning method and device and a storage medium. The method comprises the following steps: acquiring position information of a communication station tobe planned; establishing a three-dimensional model of a scene in a signal coverage area of the communication station according to the position information; based on the three-dimensional model, performing scene identification on a scene in the signal coverage area, and obtaining a scene type; and configuring planning parameters of the communication station according to the scene type. According tothe embodiment of the invention, the overall quality of the network after the newly-built communication site accesses the network can be improved, so that the communication experience of users can beimproved.

The invention relates to a method and device of generating a noise given with band width and power spectrum density, including: a given band width noise module, a power coefficient calculating module, and a power correcting module, where the given band width noise module includes a white noise module, a filter module, and a power normalization module, a generated white noise in the white noise module is inputted into the filter module for filtering, and the output signal is inputted into the power normalization module for normalizing; the power coefficient calculating module calculates out a needed noise power coefficient; the noise power coefficient and the normalized white noise pass through the power correcting module, which outputs a white noise meeting the requirement of power spectrum density. It is applied to the simulation of frequency expanded communication systems, such as IS-95, CDMA2000, WCDMA, etc.

The invention discloses a foldable landing gear. According to the landing gear, a support leg can be folded and unfolded; the support leg can be controlled to be folded in an aerial photographing process; the folded landing gear does not hinder a photographing lens, so that 360-degree all-dimensional smooth photographing of a camera can be ensured; a driving steering engine of the landing gear is used for transmitting power to a driving connection rod through a steering engine assembly; the steering engine assembly comprises a rudder angle and a rudder angle tank rotation shaft; the driving steering engine, the rudder angle and the rudder angle tank rotation shaft are products which are directly available in the market.

Embodiments of the present invention provide resource managing methods mid systems. The method comprises: receiving a request to allocate resources sent from host code of an application program located on a first device; in accordance with the allocation request and a maintained mapping logic mapping available hardware resources of at least one graphics processing unit (GPU) of the first device to a unified virtual GPU resource, allocating required resources for a device code of the application program from the available hardware resources of at least one GPU of the first device; and forwarding information of the allocated resource back to the host code. The present invention can efficiently utilize GPU resources and reduce implementation costs.

The invention belongs to the technical field of current transformer control, and relates to a DSP (digital signal processing) control board compatible with a TMS320F28x series. The DSP control board comprises a DSP2812 minimum system board, a DSP28335 minimum system board and a bottom board. The DSP2812 minimum system board and the DSP28335 minimum system board can be connected with the bottom board separately. The DSP2812 minimum system board comprises a TMS320F2812 control chip, a reset circuit, a JTAG (joint test action group) download port, an external expansion RAM (random access memory), an external expansion Flash and external expansion pin interfaces, the reset circuit, the JTAG download port, the external expansion RAM, the external expansion Flash and the external expansion pin interfaces are all connected with the TMS320F2812 control chip, the reset circuit provides reset signals for the control chip, the external expansion RAM and the external expansion Flash are used for expanding program codes and compiled code memory space of the DSP control chip respectively, and an IS6ILV51216 chip is adopted to the external expansion RAM while an SST39VF800 chip is adopted to the external expansion Flash. The DSP control board has the advantages that compatibility is realized, requirement on DSP self function maximization is met, and complex algorithm control in the field of new energy such as wind power is achieved.

The invention discloses a car seat unlocking labor-saving structure which comprises a connecting plate, a plate spring, a pull tab, a transmission shaft of an angle regulator, a handle of the angle regulator, an L-shaped connecting bar and a connecting bar; wherein, the plate spring is assembled together with the connecting plate by the transmission shaft of the angle regulator, the bending end of the L-shaped connecting bar is connected on the connecting plate, one end of the connecting bar is connected with one end of the L-shaped connecting bar, and the other end of the connecting bar is connected with the handle of the angle regulator; the other end of the L-shaped connecting bar is connected with the pull tap, and the handle of the angle regulator and the transmission shaft of the angle regulator are connected with each other and rotate together; therefore, a connecting rod structure is formed by the handle of the angle regulator, the L-shaped connecting bar and the connecting bar. By adopting a simple connecting rod mechanism, the passengers at the back row can easily realize the rapid unlocking of front row seats to achieve the function of quick passing in and out, thereby being convenient for the passengers at the back row to pass in and out; furthermore, the structure is simple, and the cost is low.

The invention relates to a superstructure and construction method for a wide-width box girder extradossed cable-stayed bridge. The superstructure for the wide-width box girder extradossed cable-stayedbridge comprises a main girder body, the main beam body is of a box girder structure, two sides of the upper surface of the main girder body are correspondingly and symmetrically provided with a bridge deck assembly in a lap joint manner; an inclined strut assembly is arranged between the main girder body and the bridge deck assembly, the inclined strut assembly is arranged obliquely, the lower end of the inclined strut assembly is fixed with the lower part of the main girder body, the upper end of the inclined strut assembly is in contact with the lower end face of a inclined surface assembly and the support of the bridge deck assembly is realized; and the bridge deck assembly can realize the extension of the main girder body in the width direction, and the main girder body and the bridge deck assembly form a bridge deck girder body structure. The superstructure and construction method for the wide-width box girder extradossed cable-stayed bridge can reduce the shear lag effect of the main girder body of the wide-width box girder extradossed cable-stayed bridge, improve the transverse stress performance of the main girder body and solve the problem that a conventional hanging basket cannot meet the cantilever pouring of a wide-width box girder of the extradossed cable-stayed bridge.

A tension mechanism for use with existing conventional bed platforms in the well known Murphy bed system in which the bed platform may be connected to the tension mechanism when the tension is at a low level by only a single installer, and the tension thereafter increased in infinite increments to any desired level by a remotely operated tool, a combination of said tension mechanism and a bed platform, and a combination desk and bed in which the bed is operated by the tension mechanism.

A bus-based information collection system with micro power consumption for battery packages comprises a plurality of batteries (1) connected in series, each of the batteries (1) is connected to a separate sampling board (2) which is sampling information of the batteries, each of the sampling board (2) is mounted near a corresponding battery (1) and is connected to a communication bus (4) arranged nearby, the communication bus (4) is connected to a secondary control board (3) used for data summarization. For each of the batteries (1) there is one sampling board (2) arranged nearby, each of the sampling boards (2) is proximally connected to the communication bus (4), and a wire is led from the communication bus (4) to the secondary control board (3), so that the wire harness inside the battery box are greatly simplified and sampling errors caused by long wire, electromagnetic interference, and the interference of various unpredictable problems can be effectively reduced. Furthermore, each of the sampling board (2) is relatively independent, such that the present disclosure may be suitable for any grouping forms of the battery, which avoids redesigning the battery information collection system for different grouping forms and guarantees portability and extensibility of the solution.

The invention discloses a business voucher configuration method and device, relating to the Internet technology field and improving execution efficiency of the business system. The business voucher distribution method comprises steps of receiving a business voucher submitted by a user device and an operation request corresponding to the service voucher, inquiring business voucher information of the business voucher, and determining whether an operation request on the business voucher is valid according to the business voucher information, wherein the business voucher information comprises business voucher attribute information and rule information, and, when the business voucher operation request is determined to be valid, refreshing the business voucher state according to the operation request. The business voucher distribution method and device is applicable to the business voucher management.

The invention provides a design method of an FPGA IP core, and the method comprises the steps: carrying out the first evaluation of FPGA IP core resources according to the design of a predetermined user, and determining a first evaluation result; And designing the FPGA IP core according to the first evaluation result. According to the method and the device, the process for evaluating the resourceoccupancy rate designed by the predetermined user is added to the IP design process in the prior art, and the layout wiring result and the resource occupancy rate are given, so that a reasonable IP core resource scale and arrangement can be given according to the design of the predetermined user, and the redundancy of resources in the IP core is avoided.

The invention relates to a design method of a mechanical draft cooling tower of an essential service water system in a nuclear power plant. The design method comprises the following steps: (I) figuring out a cooling water consumption of the cooling tower according to the operation condition of the essential service water system in the nuclear power plant; (II) segmenting an interior space of the cooling tower into a plurality of tower units to obtain cooling water consumptions and heat loads of decomposed tower units; (III) based on a cooling parameter of an existing mechanical draft cooling tower, analyzing the feasibility of a theoretical value of a cooling parameter of each tower unit, and determining a proper cooling parameter of each tower unit; and (IV) determining an actual value of the cooling parameter of the cooling tower according to a field meteorological condition and determining the size of the cooling tower. By adopting the method provided by the invention, the cooling tower can be prevented from being re-designed in large range, equipment (including a fan) in the cooling tower does not need to be re-designed, thus the design time is shortened and the design cost is reduced, the design efficiency is improved, and the building demand of the nuclear power plant is rapidly met.

The invention provides a high-compatibility X ray sensor panel and an X ray detector. The high-compatibility X ray sensor panel at least comprises a panel image detection area and a double-side pad area arranged at any two opposite sides of the panel image detection area and connected with the panel image detection area. According to the high-compatibility X ray sensor panel, a design scheme of atraditional TFT panel is optimized, the double-side pad area arranged at any two opposite sides of the panel image detection area, the panel is more compatible with different X ray detector structures, and the design, production and management cost is reduced; and the double-side pad area may include a double-reading-side pad area or a double-driving-side pad area, so that the panel can be compatible with the X ray detector structures with different requirements for relative positions of the driving and reading sides, and is especially suitable for the X ray detector structure with a single driving side and a single reading side.

An antenna array module includes at least two antenna units mounted on a surface of a feed network circuit board with two power division circuits, and a filter mounted on a surface of the feed network circuit board with two coupling circuits. Each power division circuit includes an input end and a plurality of output ends. One power division circuit feeds an antenna unit for −45° polarization, and the other power division circuit feeds an antenna unit for +45° polarization. Each coupling circuit includes a radio frequency input end and an output end, and the output end of the coupling circuit is electrically connected to the input end of the power division circuit. The filter includes at least two output ends that are electrically connected to the radio frequency input end of the coupling circuit. A base station antenna includes a mounting structure and a connection structure.

The invention discloses a wireless voltage feedforward control system and method applicable to an input-series / output-parallel system. The wireless voltage feedforward control system comprises N control branches, wherein each control branch is matched with a converter and comprises a summator, a current sampling unit, a comparator, a driver, two proportional amplifiers and two transfer units, an input voltage signal, an output voltage signal and a current signal are processed to generate a sinusoidal pulse width modulation (SPWM) control signal, a power switch device of the converter is driven to achieve wireless voltage feedforward control of the input-series / output-parallel system, and the stable running of the input-series / output-parallel system is ensured. By the wireless voltage feedforward control system, a power converter can work in an occasion with a higher input voltage, the voltage stress and the current stress of the power device in the converter are reduced, communication connection among converters is prevented, the system reliability is improved, and the design complexity is reduced.

The invention discloses a silver reflective plastic film bag and its processing method and application; the silver reflective plastic film bag can be used as a fruit bag, and has very good strength and heat insulation effect, and protects the fruit from harm. Keep the fruit growing environment stable. A silver reflective plastic film bag disclosed by the invention comprises a bag body with an opening; a base layer and a reflective layer coated on the base layer; the reflective layer is an aluminized reflective layer; the base layer is made of a hydrophobic material The reflective layer is a reflective film; the reflective film is followed by an inner layer of hot melt adhesive film layer for bonding with the base layer, a middle layer of glass beads layer and an outer layer of aluminum-coated plastic along the direction away from the base layer. film; the material of the hot melt adhesive film is EVA or maleic anhydride grafted polyethylene or a mixture of the two, and the VA content in the EVA resin is 5% to 40%; in the maleic anhydride grafted polyethylene, the grafted The rate is 0.5% to 0.8%, and the Vicat softening point is above 110°C.

The invention discloses a twin-screw compressor pressure testing mechanism and relates to the technical field of sensing testing. The twin-screw compressor pressure testing mechanism comprises a twin-screw compressor host, a pressure sensor, a pressure transmitter and a data acquisition card, wherein a circular hole is formed in the main case of the twin-screw compressor host; the pressure sensoris mounted in the circular hole and is arranged right above the axis of a female rotor or a male rotor close to the exhausting end face; the signal line and the power line of the pressure sensor are electrically connected with the pressure transmitter; an analog signal collected by the pressure sensor is subjected to signal amplification treatment by the pressure transmitter and is then transmitted to the data acquisition card; and then the data acquisition card converts the analog signal into a digital signal, and the digital signal is transmitted to a computer for data processing. The twin-screw compressor pressure testing mechanism can test the internal pressure during the running process of the compressor easily and rapidly, avoids the problem in the traditional method that the sensoris placed with complexity, carries out the minimized reformation design, is simple and convenient to execute and can precisely test the internal working pressure of the twin-screw compressor.

The invention relates to a universal ZIF (Zero Insertion Force) connector bonding pad for connecting a touch screen. The bonding pad comprises a pin bonding pad area and a fixing bonding pad area, wherein a plurality of pin bonding pads are arranged in the pin bonding pad area and are positioned at the upper part of the overall bonding pad; two square fixing bonding pads are arranged in the fixing bonding pad area and are positioned at the lower part of the overall bonding pad; the overall bonding pad is bilaterally symmetrical; each pin bonding pad is 1.5mm in length and 0.3mm in width; the central distance between every two adjacent pin bonding pads is 0.5mm; the two square fixing bonding pads are 4.1mm in length and 2.2mm in width; the lower edge of each pin bonding pad and the upper edges of the two fixing bonding pads are on the same horizontal line; the central distance between the outermost pin bonding pad and the fixing bonding pad on the same side is 1.6mm. Through the adoption of the design, ZIF connectors of different factories can be welded onto the bonding pad; when the ZIF connectors are switched, a mainboard connector bonding pad is prevented from being redesigned and manufactured, so that the cost is saved and the production efficiency is improved.