610results about How to "Reduce design requirements" patented technology

The present invention is a double-layer multi-carrier ultra-wideband wireless communication method, wherein the frequency band for ultra-wideband communication is divided into a plurality of sub-bands, then one or more sub-bands are used for data transmission, and the Orthogonal Frequency Division Multiplex (OFDM) multi-carrier transmission technology is used in each sub-band. In the transmitting party, the data symbols to be transmitted are allocated on M branches corresponding to the M sub-bands, and the OFDM modulation is implemented on the data symbols on each branch to obtain M branches of parallel data, then digital baseband multi-carrier modulation is implemented on the M branches of parallel data. Thereby, the spectrum of data on each branch is moved onto the digital sub-band corresponding to the radio sub-band one to one, so the digital baseband signal of the radio signal to be transmitted is obtained. Then, the digital signal is converted to an analog signal with a D / A conversion and an up-conversion, and the signal spectrum is moved to the radio frequency band in use, then the analog signal is amplified, filtered and transmitted via an antenna, thus the task of modulating M branches of parallel data onto M sub-bands is completed.

The invention provides a method for producing cordyceps militaris fermentation rice (cordyceps rice for short) by utilizing solid state fermentation of rice, and the method is characterized in that the rice is taken as a main fermentation substrate; and the cordyceps mycelia grows in the rice through a solid state fermentation manner so as to obtain the rice rich in the cordyceps mycelia. The method comprises the following steps: 1. preparing a cordyceps militaris liquid strain; 2. preparing a rice solid state fermentation culture medium; and 3. inoculating and fermenting. In the method, the medical effect of the cordyceps militaris is organically combined with the nutrition of the rice, thus the product contains various nutritive components and mineral elements, especially cordycepin andcordycepic acid, wherein, the content of the cordycepin is more than or equal to 600mg / 100g, and the content of the cordycepic acid is more than or equal to 3g / 100g, thereby improving the immunity ofthe organism, inhibiting tumours, preventing ageing, and satisfying the requirements of healthy eating of people.

The invention comprises: a switching unit and at least two switch control units. Said switching unit comprises a switching module with at least two uplink ports respectively connected to the root multiplexer of the control units. Said switch control units are used to control said switching module to turn on or turn off.

The invention discloses a supercritical fluid dyeing machine. A horizontal type cylindrical dyeing kettle, a magnetomotive cloth lifting wheel, a spray cavity, a wave-shaped cloth guide passage in the dyeing kettle, a heat exchanger, a dye kettle or / and an entrainer kettle and a circulating pump are used as main components to form a dyeing circulation system; and both ends of a fan are respectively connected with fluid outlets under the spray cavity and the dyeing kettle and form a cloth feeding system together with the magnetomotive cloth lifting wheel, the spray cavity and an operating opening. A rope-shaped fabric realizes circulated dyeing under the common action of the fluid in the magnetomotive cloth lifting wheel and the spray cavity, and the fluid in the dyeing kettle carries out forced circulation by the circulating pump. The dye and the fluid can realize recycling by a separating and recycling system after dyeing, and the whole dyeing circulation system and the separating and recycling system are clean to achieve the requirement during color changing and dyeing. The supercritical fluid dyeing machine can realize anhydrous dyeing processing on the fabric in a loosening type tension-free state without the production and discharge of pollutants, and has the characteristics of ecology, environmental pollution, wide adaptability of fabric variety, and the like.

The invention relates to a drive train (10) for a hybrid vehicle comprising an internal combustion engine (12) having a motor shaft (18) for providing a torque for driving the hybrid vehicle, and comprising an electric machine (30) for providing a torque for driving the hybrid vehicle, wherein the electric machine (30), in particular for starting of the internal combustion engine (12), can be coupled to the motor shaft (18) by means of a selectively engageable planetary gear unit (38) for providing at least two different transmission ratios, wherein the electric machine (30) can be coupled by means of a transmission gearing (48), in particular a sun gear system having a transmission ratio different from 1.0, having an intermediate shaft (46) for introducing the torque into the planetary gear unit (38).

The invention discloses a method for producing cordyceps militaris fermentation coarse cereals through solid-state fermentation. According to the method, people can safely and conveniently eat and digest nutritional ingredients of cordyceps militaris, and simultaneously, problems of complicated production processes and high costs of cordyceps militaris products are solved. The method adopts a solid-state fermentation manner, and a fermentation substrate is strictly sterilized, so that in the process of fermentation, the microbial interference can be basically eliminated, the solid-state fermentation is easier to master when compared with liquid-state fermentation, and design requirements and costs of a biochemical reactor are low. The whole production process comprises three links as follows: manufacturing a liquid cordyceps militaris culture, manufacturing a solid-state fermentation medium of the coarse cereals, and performing inoculation and fermentation; and the three links can realize automatic operation, so that the human resource cost can be reduced.

A wireless radio frequency (RF) transmitter includes a power amplifier and a predistorter for injecting a distortion signal into an RF signal prior to amplification for use in linearizing the power amplifier; wherein the predistorter includes a phase shifter operating at less than twice a carrier frequency of the RF signal.

The invention discloses a method for driving displaying of a display unit through analog and digital hybrid drive. The method comprises the following steps that analog drive quantity controls the illumination brightness of the display unit; under the illumination brightness, digital drive quantity controls the illumination time of the display unit. The combination of the illumination brightness and the illumination time controls the illumination of the display unit, the rich gray scale and color are realized, the gray scale and color gradation expression ability of an image is obviously improved, the display of high contrast and high dynamic range is realized, and meanwhile, the system power dissipation and design requirements of a drive chip are reduced. The invention further discloses asystem for driving displaying of the display unit through analog and digital hybrid drive, and a drive circuit adopting analog and digital hybrid drive.

The invention discloses a capacitor coupling noncontact conductance measurement device and method. The device comprises an alternating-current excitation source, an insulated measurement pipeline, an excitation electrode, a detection electrode, a range resistor, a virtual inductor, a differential amplifier module and a signal processing module, wherein one end of the virtual inductor is connected with the range resistor, while the other end is grounded, meanwhile, two ends of the range resistor are connected with the differential amplifier module. The virtual inductor substitutes an actual inductor, thus effectively overcoming the adverse effect of a coupled capacitor on the measurement result according to the series resonance principle. The virtual inductor is a grounding inductor, and compared with a floating inductor, the virtual inductor is good in working stability and simple in circuit structure; compared with an actual inductor, the virtual inductor capable of adjusting the equivalent inductance value reduces the requirement for the frequency of the excitation source. In addition, different from a noncontact conductance measurement method adopting a current method, the capacitor coupling noncontact conductance measurement method adopts a voltage method to obtain the equivalent conductance value of measured conductive fluid, thus providing helpful reference for solving the conductance measurement problem of conductive fluid in a pipeline.

The invention discloses a current sharing control method for synchronously driving a parallel-connection power module converter and a current sharing controller and relates to the field of power electronic power conversion. A software current sharing method is used for overcoming shortages in an existing parallel-connection converter hardware current sharing method. According to the technical scheme, the method comprises the steps that the step 11, average currents output by the converter and currents output by a power module are collected; the step 12, inductive current control processing is conducted on the average currents output by the converter and the current output by the power module, and therefore drive correction parameters are obtained; the step 13, time correction processing is conducted on the drive correction parameters and the currents output by the power module, and therefore drive correction time is obtained; the step 14, the duty ratio of a synchronous PWM drive signal of a master controller of the power module is corrected according to the drive correction time, and therefore a module drive signal of the power module is obtained; the step 15, the module drive signal is used for controlling a power unit of the power module, and therefore the currents output by the power module are adjusted.

The invention relates to a method for calibrating the geometrical parameter error of an industrial robot based on a two-step method. A calibration coordinate system is established and comprises a measuring coordinate system and a constraint coordinate system, an error model is established according to the interconversion relationship between a robot connecting rod coordinate system and the calibration coordinate system, and thus the preliminary calibration result of a conversion matrix between the robot connecting rod coordinate system and the calibration coordinate system is obtained; and then the preliminary calibration result is utilized to establish an error correction model including the robot connecting rod geometrical parameter error and the conversion matrix error between the robotconnecting rod coordinate system and the calibration coordinate system according to a differential perturbation method, the corrected robot geometrical parameter error is obtained, and the calibration method is simple and precise.

The invention provides a method for distributing temporary-storage goods, a temporary-storage goods cabinet and an enterprise terminal system. According to the method, the enterprise terminal system distributes the temporary-storage goods cabinet and corresponding storage lattices for goods in an order according to order information of a user, and goods numbers of the goods and identifications of distributed storage lattices for the goods are sent to the temporary-storage goods cabinet, so that after the temporary-storage goods cabinet receives distribution information of the enterprise terminal system, the storage lattices where the goods need to be stored can be directly determined, the temporary-storage goods cabinet does not need complex distribution rules for storage and calculation capacity based on the distribution rules, the design requirement and design cost of the temporary-storage goods cabinet are lowered, and meanwhile corresponding goods cabinet addresses and storage lattices of corresponding specifications can be selected for goods bought by the user according to actual requirements of the user, and better online shopping experience is provided for the user.

The embodiment of the invention provides a moving target detection method and device and is used for improving detection precision of moving targets and reducing the detection software and hardware cost. The method comprises the steps of receiving a digital signal transmitted by a radio frequency module and converting the digital signal into a time domain digital baseband signal, wherein the digital signal is the signal which is transmitted to a room by the radio frequency module after OTFS (Orthogonal Time Frequency Space) modulation, one-dimensional Fourier inverse transform and digital-to-analogue conversion are carried out on a preset delay Doppler domain symbol; carrying out the OTFS modulation on the time domain digital baseband signal to obtain delay Doppler domain channel estimation; and determining the number of the moving targets based on the channel estimation.

The present invention discloses one kind of ferrite material with low temperature coefficient, low loss and high saturated flux density and its preparation process. It is mainly spinel type structure and consists of Fe2O3 45-52 mol%, ZnO 20-35 mol%, CuO 5-15 mol%, MnO 1-3 mol%, and NiO 10-18 mol%. The preparation process includes the following steps: mixing material; pre-sintering; adding impurity; secondary ball milling; forming and sintering. The ferrite material has CuO and Mn3O4 to replace NiO and thus lowered material cost, lower pre-sintering temperature and sintering temperature and thus low power consumption, low requirement in sintering apparatus and low production cost; relatively wide pre-sintering temperature range and sintering temperature range, no need of protecting atmosphere, high technological repeatability and product consistency.

The invention discloses a working medium contact cooling system of power batteries. An insulating liquid heat-conducting working medium is contained in a working medium box; a working medium pump sinks into the insulating liquid heat-conducting working medium; a filter is arranged at an inlet of the working medium pump; the working medium pump is connected with a spray main pipe; a plurality of spray branch pipes are connected with the spray main pipe in parallel; each spray branch pipe is provided with a plurality of nozzles; the nozzles are opposite to a high-power battery pack; the spray branch pipes and the spray main pipe form a cage frame; the high-power battery pack is placed in the cage frame; the spray branch pipes are distributed on the side surfaces and the upper part of the high-power battery pack to form a relatively open spray structure; and the insulating liquid heat-conducting working medium is a nonpolar substance and is free of a phase change in the spray process. The invention further provides a working method of the working medium contact cooling system of the power batteries. According to the working medium contact cooling system, the cooling structure is reasonable and the cooling efficiency is high.

The invention provides a wave-front sensor and corrector aligning device in a self-adaptive optical system, which consists of a wave-front sensor, a wave-front recorder, a wave-front corrector, an electric control transverse moving table, a position mismatching evaluating device, a transverse moving table controller and a computer, wherein the electric control transverse moving table can transversely move and rotate, the position of the wave-front corrector is marked in a mode of exerting the voltage to an independent unit of the wave-front corrector through the computer, and the position mismatching between the wave-front sensor and the wave-front corrector is measured through the self wave-front detection capability of the wave-front sensor. Light beams enter the wave-front sensor through being reflected by the wave-front corrector, the face shape information of the wave-front corrector detected by the wave-front sensor is recorded by the wave-front recorder, the position mismatching evaluating device carries out the calculation according to the recorded information of the wave-front recorder and outputs the position mismatching data into the transverse moving table controller, and finally, the transverse moving table controller is used for controlling the electric control transverse moving table for completing the position regulation of the wave-front sensor. The invention can accurately align the positions of the wave-front sensor and the wave-front corrector, can greatly improve the aligning precision and the aligning efficiency of the wave-front sensor and the wave-front corrector, and can ensure the wave-front control capability of the self-adaptive system.

The invention discloses a Doppler wave beam sharpening rapid imaging method of a mechanical scanning radar, which mainly solves the problem that the prior art cannot be applied to a mechanical scanning radar. The method comprises the following steps of: firstly determining a pulse accumulation number M and a sharpening ratio N, arranging echoes after the pulse compression into a distance-direction matrix according to a receiving order; taking out two small matrixes which has directional length of 2*M and are mutually overlapped M from the matrix according to the receiving order; respectively performing the Doppler central estimation on the two small matrixes; using two Doppler centers to compute an interpolation frequency point; meanwhile, using the latter Doppler centre to perform the directional Doppler central compensation on the latter small matrix; then performing the directional FFT (Fast Fourier Transform), using the interpolation frequency point to extract a sub-image from thedata behind the FFT, splicing the sub-image according to the receiving order to obtain a large image. Compared with the traditional DBS (direct broadcasting by satellite) imaging method, the Doppler wave beam sharpening rapid imaging method has low computation, and low requirement on the radar performance, and can be applied to the traditional mechanical scanning radar DBS imaging.

The invention discloses an excavation construction method for a mine hard rock roadway. A cutting device is used for cutting out the outline of the roadway, cutting in the horizontal direction and in vertical direction is carried out in the outline of the roadway to obtain parallel horizontal cut grooves and parallel vertical cut grooves, and the horizontal cut grooves and the vertical cut grooves intersect and cut the section of the roadway inside the cut grooves of the outline to a longitudinally and transversely intersected grid-shaped structure. A crushing device is used for crushing or breaking a first rock inside the grid-shaped structure of the section of the roadway in a prizing mode and then crushing or breaking other rocks in the prizing mode, the crushed or broke rocks are taken out until all the rocks within the cutting depth are taken out, and a manual or mechanical conveying device is used for conveying cut rocks. The excavation construction method for the mine hard rock roadway resolves the problem of excavation of hard rocks or superhard rocks through a mechanical method, eliminates an explosion work procedure, is safe and efficient, and is not restrained by use and management regulations of explosive products. The roadway is good in forming performance, damage to surrounding rocks is small, supporting can be simplified or eliminated, operation time and engineering cost are saved, the construction speed is improved, and excavation cost is lowered.

The invention provides a MMC (modular multilevel converter) sub-module capacitor voltage fluctuation suppression method with harmonic coupling injection. The method comprises the following steps: inhibition of fundamental frequency and second harmonic generation fluctuation components of bridge arm instantaneous power is taken as a target; the injection amounts of the second harmonic generation loop current and the third harmonic generation voltage are optimally designed; and finally, the calculated second harmonic generation ring current and third harmonic generation voltage are injected intothe three phases through an injection controller, so that the voltage fluctuation of a sub-module capacitor of a whole converter valve is reduced, the requirement on the capacitance value of the sub-module capacitor is reduced, the size and the cost of the sub-module capacitor are reduced, and the light weight of the modular multilevel converter is favorably realized.

Provided is a lower limb assisting outer bone based on gravity balance. Two waists are symmetrically arranged on the two sides of a back, waist plates are fixedly connected with the back through connecting elements, upper thigh plates are hinged to the waist plates through hip joint shafts, shank plates are hinged to lower thigh plates through knee joint shafts, upper joint bearings are hinged to waist lower plates, connecting rods are hinged to the knee joint shafts, the upper end and the lower end of each upper thigh plate are each provided with a thigh binding buckle, the upper end and the lower end of each shank plate are each provided with a shank binding buckle, one ends of first steel wire ropes are arranged on the inner sides of waist upper plates and fixedly connected with the waist upper plates, the other ends of the first steel wire ropes are pulled out of first small holes of first steel wire fixing plates, wound around thigh pulley blocks and then fixedly connected with thigh connecting wheels, one ends of second steel wire ropes are arranged on the inner sides of shanks and fixedly connected with the connecting rods, and the other ends of the second steel wire ropes are pulled out of second small holes of second steel wire fixing plates, wound around shank pulley blocks and then fixedly connected with shank connecting wheels. The lower limb assisting outer bone is used for helping the aged and physically-challenged persons and used for medical rehabilitation and the like.

The invention relates to a detection apparatus for a neutron flux and a temperature of a reactor core. The detection apparatus comprises an assembly housing, a self-powered neutron detector set, an internal sealing structure, a connector and a terminal portion sealing plug, wherein the self-powered neutron detector set is fixed inside the assembly housing and comprises N self-powered neutron detectors, the N self-powered neutron detectors are uniformly arranged at intervals from bottom to top along the axial direction of the assembly housing, the connector is sealedly fixed on the upper end of the assembly housing, the terminal portion sealing plug is sealedly fixed on the lower end of the assembly housing, the internal sealing structure is sealedly fixed in the internal of the assembly housing positioned above the self-powered neutron detector set, and the armoured cables of the N rhodium self-powered neutron detectors are bundled up and fixed, upwardly extend along the axial direction of the assembly housing, penetrate through the internal sealing structure, and finally are fixed on the pin of the connector. According to the present invention, the neutron flux change of the reactor core can be rapidly responded, the reactor core neutron flux and the fuel assembly outlet temperature can be real-timely measured, and the design requirements of the transmission cable can be reduced.

The invention relates to a material used in the ferrite magnetic material industry and the production method thereof, in particular to a low-temperature coefficient permanent magnetic ferrite material and the production method thereof. Directed at the prior art's problems such as high temperature coefficient, the addition of expensive factors including La, Co, and Bi, and high production cost, the invention provides a low-temperature coefficient permanent magnetic ferrite material and the production method thereof without adding factors such as La, Co, and Bi. The materials of the invention area: The main phase is magnetoplumbite structure, and the chemical equation is: Sr1-xAxFe12-yMyO19, wherein: A=Ca, Na, Ba, Pb, K 1-2 types, x=0.05-0.5; M=Al, Cr, Zn2 / 3V1 / 3, Zn2 / 3Nb1 / 3, Cu2 / 3V1 / 3, Cu2 / 3Nb1 / 3, Zn1 / 2Ge1 / 2, Zn1 / 2Si1 / 2, Cu1 / 2Ga1 / 2, Cu1 / 2Si1 / 2 1-3 types.

The invention relates to the field of analog integrated circuit design of microelectronics in order to further expand and improve an input range and linearity of the traditional time domain ADC and reduce a delay matching error, and adopts the technical scheme that a time domain ADC (Analog to Digital Converter) based on a cycle time digital converter consists of three circuit modules. The circuit module I is a voltage-time converter VTC comprising two sampling switches Sh, two discharge switches Sd, two sampling capacitors CH or CL and Cref, two current supplies I and two comparators Com1 and Com2; one end of the first sampling switch Sh is connected with an analog input VH or VL; and the other end of the first sampling switch Sh is connected with one end of the sampling capacitor CH or CL and one end of the first discharge switch Sd. The other end of the sampling capacitor CH or CL is earthed. The ADC is mainly applied to the analog integrated circuit design.

The invention belongs to the mechanical manufacture field and relates to a parallel 3-DOF drive mechanism of a spindle head. A fixed platform is provided with 3 drive moving pairs distributed according to the position of the apex of an equilateral triangle; each drive moving pair is connected with an input member bar which is driven by the drive moving pair; the other end of the input member bar is connected with a globe hinge and is connected with link blocks via the globe hinge; a movable platform is provided with 3 uniformly aligned driven moving pairs which are chutes; 3 link blocks are respectively installed in the chutes of the driven moving pairs and can move horizontally in the chutes; a spindle is arranged in the central position of the movable platform. By adopting parallel structure, the drive mechanism obviously improves the rigidity of the spindle head structure; in addition, the drive mechanism has the characteristics of having small movement mass, good dynamic property and high movement precision, moving and decoupling along the moving direction, and is suitable for independent working and combined machining in coordination with other devices.

The invention discloses a floating breakwater and a method capable of giving consideration to an inner oscillation water column wave energy conversion function. In the floating breakwater capable of giving consideration to the inner oscillation water column wave energy conversion function, the exterior of a floating body is anchored into a seabed through an anchor rope connection sinking block; anoverhauling channel is arranged at the upper part of the floating body; and wave energy conversion related configurations are arranged in the floating body, and comprise an air chamber, an air turbine, a turbine bracket, a linkage shaft, a generator, a cushion layer and an air chamber inner water body. A realization method of the floating breakwater capable of giving consideration to the inner oscillation water column wave energy conversion function comprises the steps of a breakwater arrangement process, a process of the floating body eliminating the wave effect, a wave energy conversion output process and an overhauling process. On the basis of maintaining traditional wave retaining and eliminating functions of the floating breakwater, the wave energy conversion function is realized byusing the oscillation design of water in an air chamber, and the power output in the wave energy conversion process is continuous, so that the reliability is good; the stress design of the breakwateris reasonable, and the durability is excellent; and meanwhile, the construction cost is low, and the engineering production advantages are obvious.

The invention discloses a method and kit for realizing multiple detection of nucleic acid through a colloidal gold chromatographic technology, and belongs to the field of medical biotechnology. The invention provides a nucleic acid detection test strip, a universal probe is marked with colloidal gold particles to be fixed on a glass cellulose film, the universal probe is designed into a universal sequence, an NC film on the test strip have one or more detection lines and a quality control line, each detection line is coated with a section of nucleic acid sequence which can be in specific hybridization combination with a corresponding specific probe B series; the quality control line is coated with a section of nucleic acid sequence which can in specific hybridization combination with a specific probe A series; the specific probe A series is in complementary pairing hybridization with the universal probe; the probe marked with gold and a nucleic acid amplified fragment are combined in series by virtue of the specific probe A series and the specific probe B series, so that the specific detection of the nucleic acid fragment can be realized. The method has the advantages that the technical requirements of experimenters are low, the required detection time is short, special instruments are not required, and the method is easy to popularize towards grass-roots and remote countryside medical institutions.

Discloses are a verbal system, and a switching method and a device which are applied to the verbal system. The method comprises judging whether a preset switching signal is collected; and switching a loudspeaker of the verbal system into a sub microphone so that the sub microphone and a microphone possessed by the verbal system form a double-microphone when the preset switching signal is collected. The loudspeaker of the verbal system has an electro-acoustic conversion function and an acoustic-electric conversion function at the same time; and, in a scene that the double-microphone needs to be used, the loudspeaker is converted into the microphone and cooperates with the microphone possessed by the verbal system to form the double-microphone. So design requirements of the microphone and a loudspeaker which are possessed by the verbal system can be reduced, an internal structural space of the verbal system can also be saved, and the fact that thin and light design of the system is achieved is facilitated.

The invention relates to a red-tide living thing image automatic identifying device and method, provided with a LED, a light source lens, a mobile room, an objective, a depth of focus lens and a camera; the LED is at the focus of the light source lens, the mobile room is between the light source and the objective, and the depth of focus lens is between the objective and the camera. The identifying method: obtaining image, preprocessing, detecting object, separating image, obtaining image feature, classifying and identifying object, and outputting result. It adopts a far-focus objective, adds an operating space between the mobile room and the objective, giving a development space to the mobile room, and increases the application range of the apparatus. It can automatically analyze images, heightening automation degree of the apparatus, and meets the request for field monitoring red-tide living things, hopeful to implement real-time monitoring the generating and disappearing course of the red tide, and on this basis, provides a precaution to the danger degree of the red tide.

The invention discloses a calibration device of a self-adaption optical system based on far field performance indexes, which comprise a self-adaption optical system, a facula performance index estimator and a wavefront recorder. A light beam firstly passes through a traditional self-adaption optical system and then converges on an imaging focal plane; the facula performance index estimator (detects) computes light beam quality on the focal plane and outputs a corresponding performance index; a wavefront corrector in the self-adaption optical system is controlled to close loop according to the output performance index so as to enable the performance index output by the facula performance index estimator to reach a preset target; and finally the wavefront recorder records wavefront data of the wavefront detector in the self-adaption optical system when achieving the preset target, and takes the recorded wavefront data of the wavefront detector as a final target of the closed loop of the self-adaption optical system. By taking the facula at the imaging focal plane as a correction standard, consequent light paths of the wavefront detector and in particular design requirements on an imaging lens can be reduced, and the correction effect of the self-adaption optics can be improved.