704results about How to "Realize integrated design" patented technology

The invention provides a Ka-band tilt-structure active phased array antenna, so as to provide an active phased array antenna which is high in integration density and can improve maintainability and interchangeability. According to the technical scheme, one path of RF signals transmitted by a transmitting signal processing terminal are transmitted to a power distribution / synthesis network (5) via a signal interface and a radio frequency interface to be divided into M paths of signals; according to information of an azimuth angle and a pitch angle of the phased array antenna provided by the transmitting signal processing terminal in real time, a beam controller (4) calculates and obtains beam pointing of the phased array antenna in real time through an FPGA; the beam pointing of the phased array antenna is converted into phase data needed by each array element under control of the beam controller (4); the data are transmitted to tilt-type TR assembly sub array modules in N channels respectively via a high and low-frequency interconnected multi-core high and low-frequency socket, and under control of the beam controller, M*N paths of signals are transmitted to an antenna array, and thus signal transmission is completed, and synchronous electric control scanning of beams transmitted by the phased array antenna is realized.

The invention discloses a rapidly charged flexible lithium ion battery and a preparation method of electrodes of the rapidly charged flexible lithium ion battery, belonging to the technical field of lithium ion batteries. The electrodes of the lithium ion battery are integrally designed by a current collector and active substances. An ultralight and flexible three-dimensional graphene communicating network structure (short for graphene foams) is used as a current collector, the active substances are embedded on the surface of the three-dimensional graphene foams, the integrated active substances and the current collector can be obtained through hydrothermal, pulp filling and impregnation processes, and the content of the active substances can be regulated as required. The electrodes of the battery are not required for a metal current collector, a binder and a conductive agent, the ultrahigh conductivity and porous structure of the three-dimensional graphene network provide rapid diffusion channels for lithium ions and electrons. The lithium ion battery consisting of a positive electrode and a negative electrode can be rapidly charged, is bendable and has no capacity loss. The method disclosed by the invention is low in product production cost, ultralight and ultrathin, and capable of realizing large-batch production, and has high practical application values.

The invention provides an electromagnetic shielding conformal optical window with a longitude and latitude-shaped mesh structure, which belongs to the technical field of electromagnetic shielding of optical transparent pieces. The electromagnetic shielding conformal optical window comprises a conformal optical window and is characterized in that: (1) a longitude and latitude-shaped metal mesh is manufactured on the inner side surface of the conformal optical window shell; and the longitude and latitude-shaped metal mesh covers the whole inner side surface of the conformal optical window shell; or (2) a longitude and latitude-shaped metal mesh and a conformal optical window inner shell are manufactured on the inner surface of the conformal optical window shell from outside to inside in turn; the longitude and latitude-shaped metal mesh covers the whole inner surface of the conformal optical window shell and outer surface of the conformal optical window inner shell; the latitude-shaped metal mesh consists of metal longitudes and metal latitudes; the metal latitudes are uniformly arranged in an equivalent centre angle along a circumferential direction; the metal longitudes are arranged at equal intervals according to a metal mesh cycle along a generatrix direction; and the metal longitudes and the metal latitudes are electrically connected with one another. The electromagnetic shielding conformal optical window with the longitude and latitude-shaped mesh structure is suitable for electromagnetic shielding technology of military or civil conformal optical windows for remote measuring and sensing, medical diagnosis, secret communication, aerospace equipment and the like.

The invention discloses a radio frequency signal generating device. A control circuit is connected with a configuration port of a digital frequency synthesizer, a reference end of an operational amplifier of an automatic level control circuit and a tuning end of a voltage-controlled oscillator; a clock distribution circuit is connected with the digital frequency synthesizer, a frequency mixer and a comb-shaped spectrum generating circuit; the digital frequency synthesizer is connected with the clock distribution circuit and the frequency mixer; a local oscillation signal is connected with a switch; the switch is connected with a local oscillation input port of a quadrature modulating circuit; the output port of the comb-shaped spectrum generating circuit is connected with a third frequency mixer; the voltage-controlled oscillator is connected with the third frequency mixer, the frequency mixer and the control circuit; the frequency mixer is connected with a band-pass filter; the band-pass filter is connected with the automatic level control circuit; the output port of the automatic level control circuit is connected with the frequency mixer; and the frequency mixer is connected with the band-pass filter. The invention has digital control, good generality, low cost, flexible frequency setting and good stray and phase noise performance.

The invention provides a parking guidance system regulation and control method taking parking time into account. A multi-purpose parking guidance system dynamically displays the road traffic condition in an area, information of parking space of various large parking lots and information of difficulty of parking in the parking lots in a road network diagram. The parking guidance system regulation and control method comprises the steps that parking time information is selected as an index of the difficulty of parking in the parking lot, wherein the parking time information includes the parts which are the road traveling time for a vehicle to reach the parking lot, the time for the vehicle to queue outside the parking lot for entrance, and the time for the vehicle to search for parking space in the parking lot; calculation models of the parts of the parking time are built, and the mode of combination between color guidance and time publishing is selected to publish the parking time information on a parking guidance screen through wireless communication. According to the parking guidance system, a driver can be helped to rapidly learn about the conditions of the parking space in the parking slots in the area and the difficulty of parking in the parking slots, and makes a scientific and reasonable choice. The utilization rates of the parking slots can be balanced, the parking efficiency of the driver can also be improved, and the dynamic and static state traffic guidance integration design is achieved.

The invention discloses an intelligent sensor for the electrical conductivity of water quality. The sensor comprises a temperature-conductivity probe used for sensing the temperature and the electrical conductivity of the water; a signal conditioning module which is connected with the temperature-conductivity probe, forms a sensing circuit with the temperature-conductivity probe and carries out filtering and amplification to an output signal; a microprocessor which is connected with the signal conditioning module, is used for digitizing the signal input by the signal conditioning module and adopts IEEE1451 standards to carry out the calibration and alignment of channels; a bus interface module which is connected with the microprocessor and is used for the functions of networking and plugging and playing; and a power module which supplies power to the circuits of all parts of the sensor under the control of the microprocessor and realizes the characteristic of low power consumption. The invention can eliminate the polarization effect of the probe, has pollution resistance, large measuring range and low price, and is characterized by the functions of self alignment and compensation, self diagnosis and plugging and playing and high integrity.

The invention provides a clamp. The clamp comprises a shell and a spiral disc; the shell comprises a clamping jaw movable cover, and further comprises a positioning sleeve detachably connected with the clamping jaw movable cover, and the positioning sleeve is provided with a plurality of sliding blocks capable of sliding in the circumferential direction; the clamping jaw movable cover is provided with screws capable of being in matched connection with the sliding blocks, and the clamping jaw movable cover and the positioning sleeve are in axial fixation through the screws; and the end face, in contact with the clamping jaw movable cover, of the positioning sleeve is provided with a positioning assembly playing a role in circumferential fixation of the clamping jaw movable cover and the positioning sleeve, and the screws can enable spiral teeth and spiral grooves to keep in linkage fit when the clamping jaw movable cover circumferentially rotates on the positioning sleeve. By means of the clamp, clamp modularization combination is achieved, assembling and disassembling are convenient, the clamping jaw clip distance is conveniently adjusted, the clamping jaw movable cover can be replaced, and the clamp integrating a clamp air cylinder can be achieved.

The invention provides a hub motor driving automobile integrative design and cooperative control test platform and an implementation method. The platform comprises a whole vehicle control system, an active distributed driving system, an EMB electronic mechanical braking system, an active steering system, a power battery pack, a battery management system, a whole vehicle frame structure and a suspension module; the whole vehicle control system comprises a whole vehicle controller, a control mechanism sensor and a communication system; the active distributed driving system comprises four motor controllers, four hub motors, four wheels, an accelerator pedal and a hub motor sensor; the EMB electronic mechanical braking system comprises an EMB controller, four EMB brakes, a brake pedal sensor,a wheel cylinder pressure sensor and an EMMB brake angle and displacement sensor; the active steering system comprises a steering system control mechanism, a steering execution structure, a steering controller, and a steering knuckle angle and torque sensor. The whole vehicle frame is simple in structure, simple in process and high in expansibility.

The invention discloses an enhanced radiation three-dimensional packaging structure and a packaging method for the same. The enhanced radiation three-dimensional packaging structure comprises a multilayer substrate, devices and an interconnection circuit for connecting the devices on the substrate, a micro-channel, a radiation plate, an external radiation device and a water pump. According to the enhanced radiation three-dimensional packaging structure and the packaging method for the same, a micro-fluid convection heat transfer mode is used for quickly conducting away the vast majority of heat produced by heating devices, and the three-dimensional interconnection circuit consisting of good metal conductors connected with the heating devices in the substrate is used for assisting the conduction of the heat into and out of the substrate in a metal heat conduction way; the radiation plate at the bottom of the substrate can be connected with various types of external radiation devices, so that the problem of thermally-induced failures of a multi-chip electronic product is effectively solved; process conditions are easy to implement, and the enhanced radiation three-dimensional packaging structure and the packaging method for the same are low in cost and convenient to machine in batches, and can be widely applied to a plurality of fields of aerospace, information communication, biochemistry, medicines, automatic control, consumer electronics and the like related to national electronic development and national security.

The invention provides a three-dimensional metamaterial decoupling structure used for a microstrip array antenna. The structure comprises a public grounding plate, a dielectric substrate on the public grounding plate, two rectangular radiation patches symmetrically arranged on the upper surface of the dielectric substrate, and two coaxial feed ports, wherein five three-dimensional metamaterial decoupling units are embedded in the portion, between the two rectangular radiation patches, in the dielectric substrate in a row. By embedding the five three-dimensional metamaterial decoupling units in a dielectric between microstrip antenna array elements, intercoupling between the microstrip antenna array elements is effectively reduced, and accordingly the isolation of an antenna array is improved.

The invention discloses a real-person shoe type copying device based on single-eye multi-angle-of-view robot vision. The device comprises a single-eye multi-angle-of-view 3D (Three-dimensional) vision box and a computer, wherein the single-eye multi-angle-of-view 3D vision box is used for shooting images of a foot of a real person at five different angles of view; the computer is used for achieving the 3D reconstruction of the foot of the real person and automatically generating a 3D printing file; a plane mirror rectangular bucket-type cavity is formed inside the single-eye multi-angle-of-view 3D vision box and consists of four trapezoidal mirror planes; the upper part of a mirror body is large, and the lower part of the mirror body is small; the mirror planes face the inner side of a cavity body; a light source used for providing uniform soft lighting for the foot of the real person is arranged at the lower part of the plane mirror rectangular bucket-type cavity; cameras used for obtaining the images of the foot of the real person at multiple angles of view according to the refraction and reflection principle of the mirror planes are further arranged in the single-eye multi-angle-of-view 3D vision box; the computer comprises a single-eye multi-angle-of-view 3D vision calibrating unit, an image division, conversion and correction unit, a real person foot surface shape measurement unit and an automatic STL (Standard Template Library) file generation unit. The invention further discloses a shoe tree manufacturing method based on the single-eye multi-angle-of-view robot vision.

The invention discloses an intelligent integrated charger device for an electric automobile. The intelligent integrated charger device comprises an alternating current input module, a charging module and a direct current output module, wherein the alternating current input module is connected with an electric quantity measurement module through an alternating current input switch; the charging module is connected with the electric quantity measurement module through a module alternating current switch and an alternating current bus, further connected with an output monitoring module through a direct current bus and further connected with a monitoring general control module; and the direct current output module is connected with the output monitoring module through a direct current output switch. The charging module comprises a plurality of parallel-connection charging modules and a charging control module, one end of the charging module is the input end, the input end of the charging module is connected with the alternating current bus, the other end of the charging module is the output end and is connected with an inverter, the inverter is connected with the direct current bus, the charging module achieves a current-sharing output and automatic equalization control technology by adopting multiplexed output coordination and power intelligent assembly, damage to a battery of the electric automobile is reduced, and the charging module is small in size and high in power and rapidly charges the electric automobile.

The invention tries to knock through the interior of a closed building into a communicated whole body to perform air management for the first time, and provides a means to treat air and water directly by means of geothermal constant-temperature energy and maintain the temperature of the air and wall bodies indoor in two ways for the first time. On the basis of taking the means as a main mode of auxiliary refrigerating and heating, various problems of temperature control, air quality and ventilation in a closed house are effectively solved by combining wind power and solar energy for supplementing power for a system, taking good heat insulating performance of the house as a platform and taking high-efficiency sunshine collection as the means for raising the room temperature.

The invention relates to a broadband double-line polarization dipole antenna array used for receiving and transmitting a radio wave, which comprises at least two double-polarization dipole radiation elements, a conductor reflector plate and a feed system. The double-polarization dipole radiation element comprises two T-shaped dipole antenna units, one dipole antenna unit is vertically arranged in the middle of the other dipole antenna unit, and the polarization directions of antenna units are respectively parallel to two polarized states of the antenna array; the center distance between the two T-shaped dipole antenna units, one of which is vertically arranged in the middle of the other dipole antenna unit, is half the distance between radiation elements in the corresponding direction; the double-polarization dipole radiation element is the sequential arrangement array of a rectangular grid or the inverted sequence array of a triangle grid. The invention realizes a broadband double-line polarization antenna array which has the advantages of high isolation, low cross polarization, simple structure, and flexible and convenient feed, and at the same time has the engineering potential of realizing wide angle scan double-line polarization array.

The invention discloses an LOE (loss of excitation) fault tolerance prediction control method and device for a permanent magnet synchronous motor, and the method comprises the steps: obtaining the rotating speed, voltage and current of the permanent magnet synchronous motor, designing an LOE torque detection sliding-mode observer, obtaining an LOE disturbance estimation value and the observation value of the rotating speed, carrying out the fault tolerance prediction and rotating speed control to calculate a q-axis instruction current, designing an LOE flux linkage detection sliding-mode observer, obtaining a current observation value and a state current observation value after the LOE of a permanent magnet, carrying out the fault tolerance prediction and rotating speed control to calculate an instruction voltage, carrying out the inverse Park transformation and modulation through an SVPWM module, and generating a PWM pulse signal. The device comprises program units corresponding to the steps. The method achieves the quick and no-static-error tracking of the rotating speed and current of the permanent magnet synchronous motor under the LOE condition of the permanent magnet, optimizes the control performances of a rotating speed ring and a current ring, and facilitates the application of the permanent magnet synchronous motor in a severe environment and occasions with higher requirements for reliability.

The invention discloses a measuring tool for the diameter of an adjustable convergence spout, comprising a positioning support part and an adjustable measuring part, wherein the positioning support part is characterized in that a revolute pair hinge base 2, a central shaft, a strut bar 1, an adjustable bar, a revolute pair hinge base 6 and a support base form a planer four-bar mechanism; the revolute pair hinge base 2 is installed on one end of the central shaft; one end of the adjustable bar is connected to the revolute pair hinge base 2 by a revolute pair, and the other end of the adjustable bar is connected to the strut bar by the revolute pair; and one end of the support base is connected with the strut bar by the revolute pair, and the other end of the support base is supported on the inner wall of a barrel. The adjustable measuring part is characterized in that a support disk is connected to the central shaft by a thread; the strut bar 2 is fixed on the support disk; a slide block base is fixed on the strut bar 2 with scale by bolts; the slide block is connected to the slide block base by a compression spring; and an adjustable disk is installed on the support disk. The measuring tool has the advantages of simple structure and high measurement precision, lowers influence by manual operation factors, is convenient to disassembly and carry, and is suitable for external field maintenance.

The invention discloses a phase position continuous linear-variable phase shifter for a base station electrically controlled antenna, which comprises a power divider group, transmission lines and medium baseplates, wherein the power divider group comprises a main power divider and a plurality of slave power dividers; the power dividers and the transmission lines are realized in a strip line structure; the medium baseplates are positioned between a transmission line circuit and an upper layer floor, and between the transmission line circuit and a lower layer floor; and the power divider group, the transmission lines and the medium baseplates are integrally designed. According to the invention, the phase shift is realized, and at the same time, the power amplitude weighting of each output port is also realized. The phase shifter has the advantages of simple structure, easiness in processing, and low cost. A phase shift element adopts a medium baseplate structure, and the passive intermodulation product is suppressed. The power divider group and the transmission line circuit adopt a strip line structure, and the power capacity of the phase shifter is increased.

The invention relates to an electric field restraining method coal safety type fully-mechanized excavating onboard geological structure detection system and a method thereof. The fully-mechanized excavating onboard geological structure detection system is used for detecting the hidden geological structure in front of a tunneling surface under a coal mine and is composed of a coal road fully-mechanized excavating ahead detector, an emission electrode, a restraining electrode and a grounding electrode. Double-frequency modulating wave current is emitted to an area to be detected through the emission electrode and the restraining electrode so as to generate induced polarization effect in coal rock. Polarization information is collected and processed by a receiving part of the detector, apparent resistivity and visual width frequency, namely power feeding equipment (PFE) values, can be automatically calculated and converted into coordinate graphs for display, accordingly, the ahead tunneling geological structure can be judged, and the abnormal positions can be determined by angle scanning and depth scanning. Detection data can be automatically stored and be further analyzed through special data interpretation software, the ahead tunneling geological structure can be obtained, and advanced detection of the fully-mechanized excavating surface of a coal road can be finished. The electric field restraining method coal safety type fully-mechanized excavating onboard geological structure detection system and the method thereof are in accordance with coal safety verification standards, can be in cooperative work with a heading machine and is fast in detection, high in accuracy, good in instantaneity and convenient to operate.

The invention provides an integrated active power supply flexible pressure sensor. The sensor comprises a sensing unit of a sandwich structure and a power unit which is arranged with the sensing unitin a cascading mode and is used for providing power for the sensing unit. The power unit is a zinc-air cell of the sandwich structure, and comprises an anode, a cathode and a gel electrolyte, whereinthe anode and the cathode are oppositely arranged, and the gel electrolyte is arranged between the cathode and the anode. The anode is a flexible zinc-containing electrode, and the cathode is a flexible air electrode. The sensing unit comprises a negative electrode, a positive electrode and conductive fiber paper or conductive woven cloth, wherein the negative electrode and the positive electrodeare arranged oppositely, and the conductive fiber paper or the conductive woven cloth are arranged between the positive electrode and the negative electrode. The sensing unit takes the flexible zinc-containing electrode of the power unit as the negative electrode. The integrated active power supply flexible pressure sensor realizes an integrated design of the power unit and the sensing unit, and can be applied to practical applications such as human physical health monitoring and the like.

The invention relates to a ridge waveguide bias slot coupling micro-strip oscillator dual polarized antenna. The antenna comprises two parallel arranged ridge waveguide bias slot coupling micro-strip oscillator dual polarized antenna units, more than two positive metal pasters and more than two negative metal pasters, wherein the positive metal pasters and the negative metal pasters are uniformly arranged on the outer side face of a micro-strip plate. Centers of the positive metal pasters correspond to more than two radiation seams on a first radiating waveguide. Centers of the negative metal pasters correspond to more than two radiation seams on a second radiation waveguide. The positive metal pasters and the negative metal pasters are coupling micro-strip oscillators, thereby achieving dual polarization. According to the invention, a ridge waveguide structure is adopted, thereby achieving dual polarization and low profiles; I-shaped coupling seams are used for direct coupling feeding, thereby achieving integrated design of antennas and feeder lines; and the antennas can freely from large plane arrays as units.

A composite positive electrode of a lithium sulfur battery is formed by combining a diaphragm layer, a porous carbon layer and a carbon sulfur compound, wherein the porous carbon layer is arranged on one side of the diaphragm layer, and the carbon sulfur compound is arranged on the porous carbon layer. The preparation method comprises the following steps of adding the porous carbon, a conductive agent and an adhesive into an organic solvent to prepare paste, applying the paste onto one side of a diaphragm, and forming a porous carbon layer compound on one surface of the diaphragm layer; and adding the carbon sulfur compound, the conductive agent and the adhesive into the organic solvent to prepare paste, and applying the paste onto the porous carbon layer in the compound to obtain the composite positive electrode of the lithium sulfur battery. The lithium sulfur battery disclosed by the invention comprises the composite positive electrode of the lithium sulfur battery, a negative electrode and an electrolyte. By the lithium sulfur battery, the interface resistance can be reduced, the ionic conductivity and electron conductivity are improved, and the energy density, the cycle performance and the rate performance of the lithium sulfur battery are effectively improved.

The invention discloses a motor-transmission integral transmission system for an electric automobile and relates to a two-gear automatic gearbox planetary gear mechanism. The mechanism comprises two single-row 2K-H planetary gear transmission systems, a front-row gear ring is fixed in a front-row planetary gear transmission system, and motive power is transmitted from a front-row sun gear to a front-row planet carrier for outputting to complete a first-level deceleration. In a back-row planetary gear transmission system, a clutch C1 achieves combination and separation of a back-row sun gear and a back-row planet carrier, a brake B1 achieves fixation and separation of a back-row gear ring and a tank body, finally the motive power is output by the back-row planet carrier, and shifting of two gears can be completed through different combinations of working of the clutch and the brake. The motor-transmission integral transmission system is simple in mode, compact in structure, small in size and light in weight, and meets principles of automobile light weight.

A space locking docking mechanism, the movable bracket is set on the fixed bracket and can move relative to the fixed bracket, two ">" shaped locking links are symmetrically hinged on both sides of the movable bracket, and there are grooves on the inner surface of the locking links . The disc spring is installed at the bottom of the movable bracket, the nut of the ball screw is axially fixed, the screw of the ball screw passes through the movable bracket, the disc spring and the fixed bracket in sequence, and the end is connected with the support frame, and the support frame is supported on the locking connecting rod in the groove. The two ends of the receiving spring are respectively fixed on the movable bracket and the locking link to provide the restoring force when the locking link rotates relative to the movable bracket. When working, the nut of the ball screw rotates under the action of external force, and the screw driving the ball screw drives the support frame, locking connecting rod, and movable support to move together. After moving to a certain distance, the disc spring is compressed by the fixed support, and the support frame Slip out from the inner surface groove of the locking link and slide along the inner surface of the locking link, and spread the upper end of the locking link to achieve locking of the target.

Provided are a common-grounded edge rippled horizontal polarization broadband omnidirectional antenna array and an adjusting method of the common-grounded edge rippled horizontal polarization broadband omnidirectional antenna array. The antenna array comprises a circular dielectric slab, a power divider feed network, a public circular ring metal ground and an arc-shaped printed dipole array, wherein the circular dielectric slab is provided with a hole in the center, the power divider feed network is arranged on one surface of the circular dielectric slab and comprises a one-to-n eccentric equiamplitude same-phase power divider network and n feed microstrip lines, the public circular ring metal ground is arranged on the other surface of the circular dielectric slab and is concentric with the circular through hole, the arc-shaped printed dipole array is arranged on the other surface of the circular dielectric slab and composed of n arc-shaped printed dipoles which are evenly distributed in a circular ring shape, the middle of each arc-shaped printed dipole is connected with the public circular ring metal ground, and slits are formed in each arc-shaped printed dipole. According to the common-grounded edge rippled horizontal polarization broadband omnidirectional antenna array and the adjusting method for the common-grounded edge rippled horizontal polarization broadband omnidirectional antenna array, grooves are formed in the outer edge of each arc-shaped printed dipole, the outer edge of each arc-shaped printed dipole is made to be in a concave-convex rippled shape, and the out-of-roundness of radiation patterns of antennas is relieved.

The invention belongs to the technical field of sewage processing, and concretely relates to an integrated electrochemical reaction apparatus for processing difficultly degraded organic waste water and a processing method thereof. A housing of a reactor is divided into a circle cavity reaction zone and a cone cavity precipitation zone, a semi-arc ruthenium iridium anode and a semi-arc porous iron net are arranged in the circle cavity reaction zone, the insulation pads which are symmetrically distributed are arranged at the intermediate part, and a stainless steel cathode is arranged in the housing of the reactor; a discharge pipeline is arranged at the bottom of the cone cavity precipitation zone, an water inlet pipe is arranged at the top of the housing of the reactor, a drainpipe is arranged at the bottom of the housing of the reactor; and the semi-arc ruthenium iridium anode, the semi-arc porous iron net and the stainless steel cathode are connected with stabilized power supply. Waste water is introduced into the reactor through the water inlet pipe, the reactor is turned on, the stabilized power supply and a motor are turned on, the cathode is rotated with the motor slowly, the waste water is stirred slowly with the cathode, the waste water is subjected to Fenton-like and electric flocculation reactions near the porous iron net, electrooxidation is generated near the ruthenium iridium anode, the waste water is discharged from the drainpipe, and a precipitate is discharged through the discharge pipeline.

The invention provides a millimeter wave communication and radar integrated radio frequency front end designing method, and aims at achieving the diversity of signal receiving and transmitting of a millimeter wave radar, integration of millimeter wave communication and radar functions and integration of a millimeter wave radar radio frequency front end and a transmitting-receiving antenna. According to the millimeter wave communication and radar integrated radio frequency front end designing method, firstly, on the basis of a universal communication chip, a radar transmitting-receiving circuitis designed, therefore, the millimeter wave radar can transmit and receive baseband input signals of an arbitrary modulation system, necessary hardware support is provided for a more complex parameter estimation algorithm for radar signal processing, and at the same time, the integration of the communication and the radar is achieved; then, a microstrip balun structure and a microstrip antenna which are used for converting differential signals into single-ended signals are designed for the radio frequency front end, so that integration design of the millimeter wave radar radio frequency frontend and the transmitting-receiving antenna is achieved; finally, a strip-line feed structure is designed for the microstrip receiving antenna of a radio frequency front end receiving circuit, and theinfluence of a microstrip feed line self-radiation direction on an antenna self-radiation direction diagram is effectively reduced.

The invention discloses a device and a method for preparing biomass carbon-based demercuration adsorbents. The device comprises a static bed system, a modifier solution supplying system, a vapor and nitrogen supplying system, a loading system, a draining system, a tail gas purifying system and corresponding connecting pipelines. According to the method, different types of biomass carbon-based demercuration adsorbents are prepared by virtue of processing processes of themolysis, modifier solution dipping, vapor activation and the like; by reasonably integrating the processes of the biomass themolysis, the modifier solution dipping and the vapor activation, the preparation processes of the biomass carbon-based demercuration adsorbents are effectively shortened, the production efficiencies of the demercuration adsorbents are improved, the problems of high heat consumption, low yield, long cycle, difficulty in realizing of large scale-production and the like in the preparation processes of the biomass carbon-based demercuration adsorbents are solved, the prepared adsorbents can be widely applied to the removal of the mercury in fuel coal and waste incineration smoke; the device and the method have remarkable economic, environmental and social benefits.

The present invention discloses an integrated digital predistortion power amplifier which comprises a frequency transmitting and frequency varying system and a first processing system that is used for increasing the power amplifying efficiency, and the two systems are electrically connected with each other, and a second processing system that is used for increasing the linearization degree of the power amplifying and / or reducing the peak value of the power amplifying signal. The frequency transmitting and frequency varying system and the first processing system are respectively integrated on two comparatively-independent areas of the first circuit board. The second processing system is independently integrated on the second circuit board. A metal shielding insulating cover is arranged between the first and the second circuit board. The shielding insulating cover is arranged with at least two through plug jacks. The frequency transmitting and frequency varying system and the first processing system on the first circuit board are respectively connected with the second processing system on the second circuit board electrically through the two plug jacks with the form of slot and base pin. The first processing system is especially the Doherty HPA system and the second system is especially the DPD amp;CFR system. The power amplifier of the invention has the advantages of small volume, high integration degree and better heat radiating effect.

The invention discloses a stacked battery pack based on a honeycomb structure which is different from a traditional battery pack stacking mode. The battery pack adopts the design of an integrated honeycomb shell, battery electric cores are placed inside honeycomb holes, and the battery electric cores can be connected in series or in parallel. The hole shape, hole diameter, wall thickness, length,and height of the honeycomb structure in the integrated honeycomb shell are adjusted to adapt the electric cores of cylindrical batteries, square batteries and button batteries, according to the actual needs, and a part of honeycomb holes are selected for use as cooling channels or placement of a phase change material so as to improve heat dissipation and insulation effects of the battery pack. The integrated honeycomb shell of the battery pack has the ability of cushioning, damping, vibration, resisting shock, and protecting battery inner cores, and has good collision safety.

The invention discloses a differential planetary roller screw which comprises a nut, a plurality of rollers, a screw body and end retaining frames. The screw body is provided with an external thread, the nut provided with an internal thread encloses the screw body and is coaxially arranged with the same, the rollers are arranged between the screw body and the nut, each roller is provided with an external thread and is meshed with the screw body and the nut in a threaded manner, each end retaining frame is a toroidal shaped and is provided with holes matched with the rollers in number, shaft ends of the rollers penetrate the end retaining frames which are mounted on shaft shoulders of the screw body, and the end retaining frames are positioned with the screw body through a retaining ring mounted in the shaft groove of the screw body. An integrated nut structure of a reverse differential roller screw is easy to implement, connection by additionally arranging switching pieces is not needed when the differential planetary roller screw is applied to a core driving portion of an electro-mechanical actuator, an output structure can be directly designed on the nut, integral output is implemented, and integrate design of the electro-mechanical actuator is achieved.