545results about How to "Directional" patented technology

The invention discloses a petroleum wellhead annular space sealing device. The petroleum wellhead annular sealing device is used for sealing an annular space between a wellhead sealing body and a petroleum pipe, at least one annular groove is formed in the inner wall surface of the sealing body, and the sealing body is provided with an injection hole which is communicated to a centrifugal end of the annular groove; the petroleum wellhead annular space sealing device further comprises a sealing ring, a power ring, and an injection component, wherein the sealing ring is embedded into the annular groove, the sealing ring is used for sealing the groove in the radial direction by being jointed to the wall surface of the annular groove, and is used for sealing the annular space by being jointed to the outer wall of the petroleum pipe, the power ring is installed in the annular groove and is located between the groove bottom of the annular groove and the sealing ring, and the injection component is installed in an inlet of the injection hole, and is used for injecting fluid with given pressure so as to make the power ring push the sealing ring to tightly press the petroleum pipe. In the petroleum wellhead annular space sealing device, the requirement for deformation capability of a sealing part is low, and meanwhile the sealing capability can be effectively improved.

The invention discloses a multilayer broadband microstrip antenna, comprising an upper dielectric baseplate, a middle dielectric baseplate, a lower dielectric baseplate, an upper low dielectric constant insulating dielectric layer, a lower low dielectric constant insulating dielectric layer, a reflection plate and a feed probe, wherein rectangle radiators of metallic copper pasters are arranged on the lower surface of the upper dielectric baseplate and the upper surface of the middle dielectric baseplate and provided with U-shaped slot structures with different sizes respectively. Due to a special double-layer inverted U-shaped slot coupling feed way, the symmetry of directional diagrams on an E surface or H surface of the antenna is good, thus ensuring that the antenna has more consistent performances in more directions, and having more actual meanings as an exploration antenna and a communication antenna. The reflection plate with an EBG (electromagnetic band gap) structure can preferably restrain backward radiation in the specified frequency relative to a traditional metal reflection plate, thus improving the directivity of the antenna, thereby further improving the gain of theantenna.

A method and an apparatus for realizing a multibeam smart antenna by directional antennas in a mobile communication system, are provided. The method comprises performing space division on a base station service region by N directional antennas independent with one another to divide the base station service region into N cells, each cell satisfying a perdetermined electromagnetic radialization request; composing a delamination multibeam array by the N directional antennas based on the region to be covered by the base station, the directional antenna adjusting direction of the beam in advance to realize space division multiple access, the antenna for performing transmission and receiving of signals are controlled by a main processor unit, auxiliary processors and an antenna selection unit to position and track a mobile user. The apparatus includes a delamination antenna array composed of N directional antennas independent with one another, the antenna selection unit, auxiliary processors, a main processor; wherein the N directional antennas are connected with input ends of the auxiliary processors respectively, the auxiliary processors are connected with the antenna selection unit and the main processor respectively, the main processor is connected with the antenna selection unit and the base station. The invention has a high communication capacity and immunity.

The invention provides a PCB (printed circuit board) defect mass detection system, which comprises a thermal infrared imager, a black body, a detection platform, a pressure sensor, an image format conversion module, a power supply and control module, a counting and timing module and an analysis platform, wherein the thermal infrared imager collects the infrared radiation energy of a detected PCB and outputs corresponding infrared images, the black body provides reference for the target temperature measurement, the power supply and control module provides excitation signals of the detected PCB, and controls the work of the thermal infrared imager, the counting and timing module carries out counting coding on the detected PCB and records the excitation signal duration of the detected PCB, the analysis platform analyzes and processes the temperature information and infrared images of the detected PCB in the electrified stage, the fault information of the detected PCB is obtained, and a statistical form is produced. The PCB defect mass detection system has the advantages that the infrared images of the tested PCB in the electrified state are obtained, various kinds of circuit faults can be automatically detected, the detection fault range is wide, and the fully automatic fast and continuous detection is realized.

The invention discloses a wireless indoor positioning method and a device based on environmental backscattering. The method comprises steps: a radio frequency source RFs transmits signals; a label performs environmental backscattering; a mobile terminal Q detects the received label signals; and three-dimensional positioning on the mobile terminal is finally carried out. The device comprises the radio frequency source, the label and the mobile terminal. The environmental backscattering technology is used to be combined to multi-antenna label beam scanning, indoor and real-time three-dimensionalpositioning is realized, and the method and the device have the advantages of low power consumption, good anti-multipath effects are good; the safety is high; the system complexity is low; and the like.

The invention relates to an automobile anti-collision alarm system based on pulse laser ranging, which belongs to the technical field of electronics, which is provided with a control circuit, a laser transmitting circuit, a laser receiving amplifier circuit and relevant circuits. A single chip microcomputer STC12C5A60S2 is the core of the control circuit, after laser pulse signals are in spectral processing by a spectroscope with the support of corresponding programs, one channel of the laser pulse signals is reflected by a reflector to be directly received by a PIN receiving circuit, another channel of the pulse laser signals is reflected by an automobile ahead, and then is received by the APD (avalanche photo diode) laser receiving circuit, after receiving time of each of the channels of the laser pulse signals is accurately corrected by a discriminator circuit, the channels of the laser pulse signals are transmitted to the single chip microcomputer master control circuit to be processed, the distance from an automobile with the automobile anti-collision alarm system and the automobile ahead is monitored in real time, and the system can give a sound and light alarm when the automobile is in danger, simultaneously reminds a driver of controlling automobile speed in a voice manner and keeping the distance from the automobile to the automobile ahead. In addition, when necessary, the system outputs brake signals to control the automobile to brake. Besides, the automobile anti-collision alarm system is large in measurement range, high in directivity, interference resistance, precision and practicality, fast in response time and simple in structure, and has high economic benefit and social benefit.

The invention discloses a multicast system radio resource optimal distribution method based on an active antenna array model. The method comprises the steps as follows: performing cluster processing to a user based on position information of the user and video request information estimated in current time period; calculating a horizontal azimuth angle and a vertical elevation angle of the central position of each user group according to the user cluster result and position information of each user group; accurately aligning the user group with a base station antenna beam; using an antenna model of an active antenna array and determining a channel gain model from the base station to the user; providing a carrier resource distribution model based on the target of maximizing throughput capacity; providing a user group clustering algorithm, and performing clustering processing to the user group according to the position information of the user group. On the basis of carrier distribution algorithm of maximizing the throughput capacity, the method of the invention improves spectrum effectiveness, resource utilization rate, system capacity and user performance.

The invention belongs to the technical field of medical optometry equipment and especially relates to an intelligent portable hand-held vision screening instrument and an optometry method. The instrument comprises an optometry system, a camera shooting system, an integral control system and a wireless communication system which are connected to a central processing unit, wherein the optometry system is composed of a light source, a diaphragm and a lens and is used for emission of the light source, diaphragm isolation and lens transmission; functions of distance and temperature measurement are achieved through combination of an ultrasonic ranging and a temperature sensor; the optometry system can shoot eye images by an infrared lens and a visible light lens; the integral control system executes different modes including a preview mode, a camera shooting mode and a checking mode; the wireless communication system carries out card reading functions of a social insurance card and a medical service card as well as wireless data transmission; and the central processing unit carries out collection and processing of data, image recognition, gray analysis and diopter computation. The intelligent portable hand-held vision screening instrument is connected to an intelligent medical cloud platform by a wireless communication system.

The invention relates to an indirect arc welding device between tungsten electrode and melting electrode and a welding method thereof, belonging to the technical field of material welding device and welding method, which is used to solve the problems in the prior arc welding devices, such as high hot input, low weld joint deposited ratio and high dilution ratio. The two ends of the welding wire are respectively connected with a wire feeder and a melting electrode welding torch, and exposed outside of the conductive mouth of the melting electrode welding torch. The welding wire is connected with a power supply, and the tungsten electrode welding torch and the melting electrode welding torch are connected respectively with the positive and negative electrodes of GTAW, and the axial point of the two welding torches is on the top of the weldment to be welded, and two protection gas cylinders are connected respectively with the protection gas inlets. Based on the device to weld in a certain welding process, turning on the arc generating switch, and using arc only generated between the tungsten electrode and melting electrode to quickly heat to melt the welding wire, and the droplet of the melted welding wire with heat heats the device indirectly and welds. The welding method has the advantages that the weld joint deposited ratio is increased up to 50g / min and the dilution ratio is controlled within 5%.

The invention relates to a defoaming agent composition which is prepared by compounding 20-30 parts by mass of branched polyether, 10-20 parts by mass of modified nano silica, 20-30 parts by mass of polyorganosiloxane and 20-30 parts by mass of a solvent. The defoaming agent composition combines the hyperbranched polyether and the modified nano silica together, has an obvious synergistic effect, so that the hyperbranched polyether and the modified nano silica can be more compatible, defoaming properties of the hyperbranched polyether and the modified nano silica in high temperature environment can be increased, when the adding amount is about 30 mug / g, the defoaming rate can reach more than 90%, and the defoaming performance is strong.

The invention relates to a vector hydrophone in the field of micro-electro-mechanical system (MEMS) sensors, in particular to a three-dimensional vector hydrophone, and solves the problems that the conventional combined three-dimensional vector hydrophone is unfavorable for realizing miniaturization, is difficult to produce in batches, and the like. The hydrophone comprises sensing units for sensing underwater acoustic signals in an X direction, a Y direction and a Z direction respectively, wherein the sensing unit for sensing the underwater acoustic signal in the Z direction comprises a semiconductor frame and two cantilever beams which are suspended in the semiconductor frame, are parallelly arranged and have equal length; single ends of the cantilever beams are fixed with the same border of the semiconductor frame, and free ends of the cantilever beams are fixed together through a connecting beam; the ends of the two cantilever beams fixed with the semiconductor frame are provided with a strain sensing element respectively; two reference sensing elements are arranged on the semiconductor frame and are connected to form a bridge circuit; and the semiconductor frames of the two sensing units are integrated on the same plane. The hydrophone has a simple and novel structure, is monolithically integrated, is easy to miniaturize, manufacture and produce in batches, and has a wide application range.

The invention discloses a method for analysing individual emotion tendency of microblog user. The method comprises the following steps of: acquiring data, separating words, loading a word bank and an emoticon bank, establishing the interested topic bank of the user, dividing short sentences, extracting emotion elements, establishing the individual locution list of the user, calculating a locution emotion value, calculating the topic emotion tendency of the user, and calculating the overall emotion tendency of the user. The invention further discloses a system for analysing individual emotion tendency of microblog user. According to the method and the system disclosed by the invention, an emotion analysis on the single microblog user is realized, and the emotion analysis on the user is combined with specific topics to avoid an indistinct and stiff analysis mode, thus the emotion analysis on the user is more meticulous and directional, and the accuracy of the emotion tendency analysis is improved.

The invention relates to the technical field of traffic monitoring, in particular to a highway agglomerate fog early warning system based on intervisibility distance monitoring and an early warning method thereof. The highway agglomerate fog early warning system comprises a highway agglomerate fog early warning detection device and a server. The highway agglomerate fog early warning detection device comprises a laser emitting module, a laser receiving module, a control module and a data transmission module. The laser emitting module and the laser receiving module are oppositely arranged on the two sides of a highway. The highway agglomerate fog early warning detection device is in communication with the server through the data transmission module. The early warning method includes the step that the laser receiving module is used for receiving light intensity data to calculate an intervisibility distance, the step that the intervisibility distance is compared with a greasy weather traffic safety early warning threshold value, and the step that the server issues early warning information. By means of the highway agglomerate fog early warning system based on intervisibility distance monitoring and the early warning method thereof, agglomerate fog monitoring of highway narrow strip-shaped space can be achieved, the current intervisibility distance can be obtained automatically and accurately, corresponding early warnings are given out, and thus highway traffic safety is improved.

The invention discloses an experimental device for promoting gas flowing with ultrasonic waves. The experimental device comprises a rock core holding unit, a constant-temperature regulating module and an axial load and confining pressure module, wherein a rock core inside the rock core holding unit is connected with a gas gathering and pressurizing module and a vacuumizing module; an ultrasonic loading module is arranged around the rock core holding unit which is connected with a vibration detection module; the experimental device further comprises a measuring and data acquisition module which is used for acquiring the axial load and the confining pressure of the rock core and the pressure and speed at a gas inlet. The experimental device for simulating the gas flowing rules of coalbed methane in immediate vicinity of wellbore under ultrasonic loading is capable of providing different temperatures and experimental conditions under three-axis stress states; ultrasonic fields with different frequencies and different power are respectively loaded in a vertical flowing direction, a down-flowing direction and a reverse flowing direction; impacts of an ultrasonic and mechanical vibration and a thermal effect to the gas flowing can be separated through a water-bath constant-temperature module; an impact of single factors such as mechanical vibration and thermal effect to the flowing can be simulated.

The invention provides a wireless power transmission system and method. The wireless power transmission system includes an emission module, a reception module, a control module and a power supply module, wherein the emission module is used for receiving driving voltage to generate driving current so as to generate an alternating magnetic field, and is coupled with the reception module to perform wireless power transmission; the reception module is used for coupling with the emission module to perform wireless power transmission, and sending the feedback information to the control module; the control module is used for acquiring the amplitude and phase controlling the driving current according to the feedback information, and enabling the power supply module to work according to the acquired amplitude and phase; and the power supply module is used for receiving the amplitude and phase and adjusting the amplitude and phase so as to supply driving voltage for the emission module and generate the required driving current. The invention provides a wireless power transmission system and method, based on a three dimensional coil wave beam shaping technology. The wireless power transmission system and method can control the magnitude and direction of the magnetic induction intensity in the three dimensional space by means of control of the current amplitude flowing into the coil and the phase, enable the magnetic field to direct at the specific position, can continuously feed back information, and can reduce the system stable state error to achieve the aim of field orientation.

The invention discloses a microwave network channel accessing method based on a narrowband wave beam directional antenna. The method comprises the following steps of accessing a superframe structure multi-hop Ad Hoc network by a network main station, using the multi-hop Ad Hoc network operation time as a reference, and transmitting a synchronizing signal; capturing the synchronizing signal by other network nodes; if capturing succeeds, acquiring unidirectional synchronization; transmitting a broadcast signal according to an MAC address by means of a broadcast signaling time slot, performing searching on other network node broadcast signaling time slots, and establishing a neighboring link relation; performing distance measuring and performing path transmission time delay correction; performing neighbor discovering and antenna adjustment, and obtaining an optimal transmitting and receiving antenna; randomly accessing a time slot A by a sub-frequency channel, and accessing a small time slot by the channel of each time slot; and in a period, accessing the small time slot by M channels, and performing average distribution according to the MAC address. The microwave network channel accessing method is based on the microwave network and the distributed narrowband wave beam direction antenna and has advantages of realizing reliable and stable transmission in a high-mobility scene, quick real-time adjustment of the directional antenna, and effectively improving comprehensive communication performance of the network.

This invention relates to downhole operation hypersonic positioning system and its method, which comprises safety hat movable terminal, street base station and network connection management center, wherein, the management center sets base station parameter with certain distance to send one impulse trigger signal and one hypersonic impulse sequence; the movable terminal recording the trigger signal and receiving the hypersonic impulse signal time interval; getting the distance between the movable terminal and base station according the known time; sending the information of terminal, distance, direction and codes to the radio communication channel and to the management center to display operation person position.

The invention discloses a mobile communication network wireless network voice optimizing method. The mobile communication network wireless network voice optimizing method comprises the steps that the current network state is detected at first, whether the current network is the mobile communication network wireless network or not is judged, and if not, operation is automatically stopped; if yes, signaling data and voice data of the mobile communication network wireless network are automatically detected; the signaling data and voice data of the mobile communication network wireless network are collected, and signaling and voice association is carried out; the collected data is analyzed, the wireless network state and problem are judged according to a voice quality analysis result, and the voice quality of the wireless network is optimized; finally, the optimal optimization rate based on the voice service is analyzed and calculated, and the optimal optimization rate of the mobile communication network wireless network voice service is obtained. The service capacity of the mobile communication wireless network is brought into full play, the voice optimizing method can be updated in time according to the current situation of the mobile communication network wireless network, and resources are dynamically adjusted.

The invention discloses a graphene heat-emitting film assembly with a single-side far infrared radiation function and a bed warmer based on the graphene heat-emitting film assembly. According to the graphene heat-emitting film assembly of the invention, one surface of a graphene heat-emitting film layer, which is far away an electrode layer, is provided with a far infrared reflecting layer. The graphene heat-emitting film assembly disclosed by the invention has an excellent infrared reflection effect and is more energy-saving; the bed warmer based on the graphene heat-emitting film assembly has the advantages of good heat-emitting stability, high temperature rise speed, uniform heat emission and soft material, and can realize the physical therapy functions of promoting blood circulation, repairing cells, preventing diseases and the like..

The embodiment of the invention discloses an audio data processing method, a device and a storage medium. The method comprises the following steps: acquiring multiple ways of audio data in an environment space, acquiring voice data sets on the basis of the multiple ways of the audio data, and respectively generating enhanced voice information corresponding to the voice data sets in multiple enhancing directions; matching hidden voice characteristics in the enhanced voice information with target matching words, and confirming an enhancing direction corresponding to enhanced voice information with the highest matching degrees with the target matching words as a target audio direction; acquiring audio spectrum characteristics in the enhanced voice information, and acquiring audio spectrum characteristics in the target audio direction from the audio spectrum characteristics; on the basis of the target matching words, carrying out voice verification on the hidden voice characteristics and the audio spectrum characteristics in the target audio direction, thereby obtaining target verification results. By adopting the method, the wrong recognition rate can be effectively reduced while thevoice control accuracy is improved.

The invention relates to a sulfur hexafluoride gas insulation totally-enclosed combined electric partial discharge detection and positioning system in order to conveniently detect and position the insulation defects of a gas insulation switch device from the outside. A central control unit is connected with an ultrahigh frequency signal receiver and an ultrasonic receiver; if a measured ultrahighfrequency signal and ultrasonic have continuous correlation, the position of the ultrasonic receiver on the external wall of the gas insulation switch device is changed for a plurality of times, and the time difference of maximum amplitude appearing in the amplitude characteristic map of ultrahigh frequency signals and maximum amplitude appearing in the amplitude characteristic map of ultrasonic on each detection position is recorded so as to calculate the distance between a discharge point and each detection position; and the position of the insulation defect in the gas insulation switch device is calculated according to the external dimension of the insulation switch device.

The invention discloses a big data technology based investment method of a financial investment system and relates to the technical field of a financial product. The system comprises a user information obtaining module, a database module, a statistical module, a friend making module, a trading module and a report generation module. According to the invention, the database module is enriched by applying a bid data technology to a database, more comprehensive and effective data service is provided for users, at the same time, data is organically ordered by use of its own statistical module, and a more accurate and valuable reference can be provided for the user for decision-marking.

The invention discloses a process for welding electronic microcomponents based on a multi-temperature gradient. The process is simple, convenient, efficient, stable and reliable in processing quality, good in welding flowability and little in welding hollows. The process is realized by the following technical scheme: designing the temperature gradient of welding fluxes according to melting points of different welding fluxes and respectively manufacturing welding flux slices at different temperature gradients from a secondary high temperature to a minimum temperature; dividing a function substrate and a transition parent plate on each electronic microcomponent into welding surfaces of the welding fluxes at different temperature gradients and coating a welding flux film coating layer on the welding surfaces directly and respectively by sputter coating; arranging welding flux thickness control pins at more points on the welding surfaces of the electronic component; laminating the electronic microcomponents (1), the welding flux slices (3) and the substrate component (5) sequentially, putting into a clamp with a counter-recoil pressure holding mechanism and putting the clamp into a furnace for vacuum welding; firstly completing the welding at a high temperature gradient, and then protecting other surfaces, which are not used for the welding at the next temperature gradient, of the substrate component, and coating one welding flux film coating layer on the welding surfaces respectively by the sputter coating at the next temperature gradient.

The invention discloses an SAR image speckle suppression method based on second generation curvilinear wave transformation, which mainly overcomes the defect of scratch effect and point target loss brought by a curvilinear wave to the SAR image speckle suppression. The SAR image speckle suppression method comprises the following steps: performing the second generation curvilinear wave transformation to a selected test image and partitioning the selected test image into 5 layers of subbands; keeping coefficients of the first layer unchangeable and zero-setting coefficients of the fifth layer; respectively evaluating parameter vectors of hybrid Gaussian models from the second layer to the fourth layer by an EM method; marking the coefficients from the second layer to the fourth layer; reconstructing the image, detecting the edge of the reconstructed image, and performing the average filtering to the uniform area of the reconstructed image to obtain the filtered image; and performing the nonlinear anisotropy dispersion iteration to a difference image obtained by the original image and the filtered image to obtain a speckle suppressed image. The invention has the advantages of keeping clean edge of the image, removing the scratch effect and remaining the point target characteristic information of the image, and can be used for preprocessing scene analysis and image understanding in the SAR image.

The invention provides a route forwarding method for the content internet. Before the method is implemented, a content routing table recording a content name prefix and a next-hop router is constructed and stored in advance according to the content name prefix of data stored in other routers in the current network. The method comprises the following steps of when any router receives a content request, inquiring whether data matched with a content name prefix requested by the current content request exists in a local cache or not; if so, enabling the router to send the data matched with the content name prefix requested by the current content request in the local cache to a requesting party of the current content request along the original route; otherwise, looking up a record matched with the content name prefix requested by the current content request in the content routing table locally stored in advance; and forwarding the current content request to the next-hop router recorded in the record matched with the content name prefix requested by the current content request. After the method is applied, the hit rate and the network forwarding efficiency of the data can be improved.

The invention discloses a nanowire array preparation method, a nanowire array integrated device and a preparation method thereof. The nanowire array preparation method includes the steps that square bosses which are arranged in a matrix mode are etched on a substrate; mask layers are arranged on the upper surface of the etched substrate and the upper surfaces of the square bosses in an evaporation plating mode; trapezoid grooves are etched in the square bosses at equal intervals; heterostructure nanowires are grown on the side walls of the trapezoid grooves; each gap between every two adjacent heterostructure nanowires is filled with an insulating medium. The nanowire array and the nanowire array integrated device prepared through the method can grow in batches, and directionality and the ordering property are achieved; a grown micro-nano material has controllability.

The invention provides an automatic walking device. The automatic walking device comprises a housing; a walking module installed at a housing; a boundary detection module installed at the housing for detecting a distance between the automatic walking device and a boundary; an energy module installed on the housing for providing energy for the automatic walking device; and a control module which is electrically connected with the walking module and the boundary detection module, according to signals representing an angle relation between the automatic walking device and the boundary, sent by the boundary detection module, makes the walking module execute steering, and enables a central axis of the automatic walking device to always form an acute angle or a right angle with one side edge of the boundary when the steering is finished and the other side of the boundary to form an acute angle or a right angle with the central axis of the automatic walking device when the steering begins. Steering walking is directional, going out of a narrow area can be easier, and the area coverage efficiency is higher.

The present invention relates to a product recommendation method and system; the method includes: obtaining a user's purchase record; querying the product attributes of the purchased product through a preset product database; matching potential intended products in the product database according to the product attributes of the purchased product; Recommend potential products to users. The system includes: a record acquisition module, which is used to obtain the user's purchase records; an attribute query module, which is used to query the product attributes of the purchased products through the preset product database; Match potential intended products within; the recommendation module is used to recommend potential intended products to users. For e-commerce platforms, active marketing to users can help improve user experience and increase user satisfaction; for users, personalized recommendations for potential products based on user purchase records save time and cost for selection.

The invention discloses a high speed railway tunnel convergence automatic detection device and detection method. The device comprises a laser target, a power supply module, a cabinet, a laser sensor, a tilt angle sensor, a communication module and a server. The cabinet is fixed to the inner wall of a tunnel. The laser target is fixed to the inner wall of the tunnel. The laser sensor is fixed in the cabinet and is fixedly connected to the tilt angle sensor. The laser sensor, the tilt angle sensor, and the communication module are connected to the power supply module. Both the laser sensor and the tilt angle sensor are connected to the communication module which communicates with the server. The communication module sends the distance measured by the laser sensor and the deflection angle measured by the tilt angle sensor to the server. The server obtains a tunnel convergence value according to the distance and the deflection angle. According to the high speed railway tunnel convergence automatic detection device, the real-time rapid long-term monitoring of high speed railway tunnel displacement and convergence is realized.