2784results about How to "Meet application needs" patented technology

The invention discloses a centralized alarm monitoring system and method of a power system terminal communication access network. The method comprises the following steps: alarm collection: receiving real-time alarm messages reported by device network management systems, synchronizing the real-time alarm messages of the device network management systems to an alarm processor module to provide alarm and processing data sources for alarm; alarm preprocessing: performing normalized processing and classified compression on the collected alarm messages; alarm monitoring: displaying all kinds of preprocessed alarm messages on an alarm operating floor and a network topology diagram in real time, and forwarding important alarm to operation and maintenance personnel through short messages, emails and in station message means for important focus; fault diagnosis: performing analysis, diagnosis and qualitative diagnosis on the alarm according to the experience in an alarm processing experience library, and identifying all kinds of possible fault reasons inducing the alarm; and fault processing scheduling: locating the geographic position of a fault point according to the fault diagnosis result and the operation and maintenance group in charge, processing a work order, and scheduling the corresponding operation and maintenance group to remove the fault.

The present invention provides an S-shaped acceleration and deceleration control method for changing speed and position of an object on line. The method comprises the acceleration phase speed planning, the deceleration phase speed planning, the constant speed phase speed planning, the real speed reduction point predication, the maximum speed processing, the surplus distance compensation, the online object speed changing algorithm and the online object position changing algorithm. An acceleration and deceleration discretization speed planning method is employed and the user input parameters are combined to calculate the operation time of a seven-phase speed planning phase. It is determined whether the maximum acceleration and the maximum speed can reach the criterion or not, the integration problem of a sampling period Ts according to the acceleration/deceleration acceleration, the acceleration/deceleration speed and the final position L after discretization is considered, and the real reachable acceleration/deceleration acceleration, the acceleration/deceleration speed and the feed rate are corrected. The S-shaped acceleration and deceleration control method for changing speed and position of the object on line greatly simplifies an original calculation formula and saves lots of operation time of a computer, and the surplus distance employs a one-time compensation method in the speed reduction process.

The invention discloses a positioning method and a positioning system of multiple magnetic targets, at least two magnetic targets with a built-in permanent magnet are arranged, and a magnetic sensor array with the sensor number more than 5 times of the magnetic target number is arranged. The positioning method comprises following steps: A. space position of each sensor and magnetic induction strength data in each sensor position under the action of each magnetic target are obtained; B. the magnetic induction strength data obtained from the measurement and the Biot-Savart law are utilized for defining an error objective function; C. a nonlinear optimizing algorithm is utilized for searching the position and direction parameters of the magnetic targets, minimizing the error objective function, and obtaining positioning data of each magnetic target including the position and direction parameters. Simultaneously relative positioning of the measured targets is implemented according to the position data of the multiple magnetic targets in an absolute coordinate system, thus realizing precise positioning and tracing of built-in targets of moving objects or human bodies.

The invention discloses a method for calibrating external parameters of a monitoring camera by adopting reference height, which comprises the following steps of: far vanishing point and lower vanishing point-based vision model description and related coordinate system establishment; projected coordinate calculation of reference plumb information-based far vanishing points and lower vanishing points in an image plane; reference height calibration-based camera height, overhead view angle and amplification factor calculation; design of a reference plumb direction-based horizon inclination angle calibration tool; and design and use of perspective projection model-based three-dimensional measurement software and three tools for three-dimensional measurement, namely an equal height change scale, a ground level distance measurement scale and a field depth reconstruction framework. The calibrating method is simple and convenient in operation, quick in calculation and high in measurement precision. The reference can be a pedestrian, furniture or an automobile; and a special ground mark line is not needed. The method allows the camera to be arranged at a low place, and the shooting overhead view angle is slightly upward as long as the bottom of the reference can be seen clearly in the video and the ground level coordinate system is definite.

The present invention relates to a time/digital converter based on FPGA and its conversion method, belonging to the field of time measurement technology. Said converter includes the following components: fine time measurement unit, coding unit, coarse time measurement unit and data buffer storage unit. The main application of said invention is to make high accuracy time measurement, it can be used in the fields of basis research and various application researches.

The invention relates to a P2P (peer-to-peer)-based underwater acoustic sensor network system and a data transmission method thereof. The data transmission method is characterized in that a plurality of underwater acoustic sensors are arranged in water to carry out data collection, data are subjected to network encoding in a random linear encoding manner, then routing nodes are selected according to the geographic positions of underwater acoustic sensor nodes to carry out data transmission so as to progressively forward the data to the underwater acoustic sensor nodes close to the water surface by utilizing the communication between an underwater acoustic transducer and the other underwater acoustic sensor nodes until the data are forwarded to a relay node on the water surface, and the data are sent to aggregation nodes on the shore by the relay node through GPRS (General Packet Radio Service). According to the P2P-based underwater acoustic sensor network system and the data transmission method thereof, the distribution of the aggregation nodes is not limited by the geographic position and the distance in the conventional underwater acoustic sensor network system structure, and the data unloading completeness and the data transmission rate can be guaranteed under the condition that the packet loss probability of an underwater acoustic channel link is relatively high, so that the energy consumption caused by retransmission of redundant data packets in a network is effectively reduced, and the service life of the underwater acoustic sensor network system is further prolonged.

The invention provides a distributed base station as well as a data transmission method and a data transmission device. The base station comprises a base band unit (BBU) and a radio remote unit (RRU) and is characterized in that the RRU comprises a first module and a second module, and the BBU comprises a third module, wherein the first module is used for carrying out data processing on a physical layer, the second module is used for carrying out data processing on the first part of MAC (Media Access Control) sublayer and data processing on the first part of RLC (Radio Link Control) sublayer, and the third module is used for carrying out data processing on the second part of MAC sublayer and data processing on the second part of RLC sublayer. After the invention is applied, the bandwidth requirement on a fiber interface between the BBU and the RRU in the base station can be lowered, and meanwhile, the processing performance of baseband data is ensured.

The invention belongs to the technical field of heated non-combustible cigarettes, and particularly relates to a reconstituted tobacco and a heated non-combustible cigarette prepared by using same. Preparation for the reconstituted tobacco comprises the following steps: firstly preparing a tobacco substrate by manufacturing paper with pulp through a paper-making process; and then, coating spice onto the tobacco substrate, and drying the tobacco substrate to obtain the reconstituted tobacco. The heated non-combustible cigarette prepared by using the reconstituted tobacco comprises a tobacco barrel, cigarette paper packaged outside the tobacco barrel and a composite filter stick connected with one end of the tobacco barrel, wherein a cavity is arranged in the center of the tobacco barrel; a lamellar spacing is arranged between adjacent two layers of the reconstituted tobaccos; the composite filter stick comprises a hollow section and a solid section, wherein the hollow section is in direct contact with the tobacco barrel. The reconstituted tobacco provided by the invention is designed for a heated non-combustible cigarette product, has the advantages of being relatively good in universality and applicability, wide in range of application, capable of simultaneously adsorbing certain harmful substances, capable of meeting physical and mental needs of a consumer, and the like, and has a relatively high practical value and relatively good popularization and application significance.

The invention relates to a multi-stage core and shell structure multi-element material precursor used for an anode material of a lithium ion battery. The molecular formula of the multi-stage core and shell structure multi-element material precursor is (1-x)Li[NiaMnbCo1-a-b][OH]2 x [NimConM1-m-n][OH]2, wherein M=Mn, Al, Mg andTi, the x is larger than or equal to 0.2 and smaller than or equal to 0.9, the a is larger than or equal to 1/3, the b is smaller than or equal to 1/2, the m is larger than or equal to 0.6 and smaller than 1, and the n is larger than or equal to 0 and smaller than or equal to 0.3. A core and shell multi-layered compound structure is adopted, a core of the core and shell multi-layered compound structure is made of a high-nickel-based and high-specific-capacity multi-element material, a shell of the core and shell multi-layered compound structure is made of a high-safety material with the identical nickel and manganese molar content, wherein the high-safety material contains a small quantity of cobalt or does not contain the cobalt, a space between the core and the shell is made of a multi-layered material and is configured according to proportions different from those of the shell and proportions of the core, the proportions of core materials in the multi-layered material from inside to outside are gradually reduced while the proportions of shell materials in the multi-layered material from inside to outside are gradually increased, and accordingly the multi-stage core and shell structure is formed. The multi-stage core and shell structure multi-element material precursor not only has a high specific capacity performance of the core materials, but also has characteristics of high circulatory stability and safety of the shell materials, and is low in large-scale manufacturing cost. The cost is not increased as compared with a homogeneous multi-element material. Besides, repeatability is high, batch stability is good, and the multi-stage core and shell structure multi-element material precursor meets requirements of large-scale commercial application.

The invention relates to a low-loss microwave dielectric ceramic material and a preparation method thereof, which belongs to the technical field of an electronic information functional material and device. The low-loss microwave dielectric ceramic material comprises a main crystal phase and additives, wherein the main crystal phase comprises MgTiO3, Mg2SiO4 and CaTiO3, and the main crystal phase contains little Mg2TiO4; the additives comprise MnO2, Co2O3, CeO2 and Nb2O5; the loss of the material is detected to be low (Qxf falls in the range of 65000 to 85000GHz), the dielectric constant is adjustable (between 9 and 20), the frequency temperature coefficient is stable (within +/-10ppm/DEG C), the machinability is good, and the application requirement of a microwave communication industry can be met. The preparation method is a solid-phase sintering method and has the characteristics of simplicity, environmental friendliness and low cost, and is easy to control.

The invention provides a high-precision and high-integrality time-digital converter based on an FPGA (Field Programmable Gate Array), and an implementation method. The time-digital converter comprises a fine time measuring unit, wherein the fine time measuring unit consists of a time alternate sampling unit, a multi-stage sampling data buffering unit and a snapshot and encoding unit. The invention aims to provide the high-integrality precision time-digital converter based on an FPGA. Innovation points lie in that: a fine time measuring part adopts a technology of a latch snapshot and rapid encoding combined architecture based on phase splitting clock alternate sampling, multi-stage sampling data caching and cached multi-stage sampling data. The high-precision and high-integrality time-digital converter has the characteristics of simple structure, design flexibility, high portability, short measuring dead time, large dynamic range, low cost, flexible interface and the like, and can be applied to the fields of aerospace, space research, communication, biomedicine, earth dynamics, relativity research and the like.

The invention provides a multi-vision-based bridge three-dimensional deformation monitoring method which comprises the following steps of: (1) obtaining the images of calibration plates and extracting the feature points on the multiple calibration plates by multiple video cameras respectively; (2) establishing a mapping model based on a BP neural network; (3) obtaining each video camera image at the bridge edge feature points; (4) eliminating the error point pairs by use of RANSAC to obtain the correct matching point pairs; (5) extracting the two-dimensional coordinates of each video camera image at the bridge edge feature points, obtaining the three-dimensional world coordinates of the feature points according to the mapping model based on BP neutral network, and drawing a three-dimensional curve of the bridge surface; and (6) extracting the bridge deformation rule according to the bridge curves of the bridge at different moments, and judging the bridge deformation trend. The method provided by the invention can perform non-contact three-dimensional measurement on the bridge deformation, and has the advantages of continuous measurement, instant measurement, synchronous measurement of multiple points, high precision, repeatability, low cost and the like.

The application provides an application server selecting method and a network connection method. The methods include that a client simultaneously sends a DNS (Domain Name System) query request which comprises a domain name to a plurality of DNS servers; When a DNS server send an IP (Internet Protocol) address corresponding to the domain name back to the client according to the DNS query request, the client generates a candidate list of IP addresses in accordance with the IP address; the client simultaneously sends a connection request to an application server corresponding to every IP address in accordance with the candidate list of IP addresses; an optimal application server is determined according to state information of response to the connection request of every application server. The application server selecting method and the network connection method can ensure the reliability of DNS resolution service and shorten time consumption as well as can meet the specific needs of network applications and improve the safety.

The invention discloses a millimeter wave folding-type reflective array antenna integrated with a plane feed source. The millimeter wave folding-type reflective array antenna is of a layered structure and is sequentially provided with a polarization grid, a reflective array and the plane feed source from top to bottom. On the basis of a plane substrate integration waveguide structure, a substrate integration waveguide gap array antenna is used as the feed source for conducting feed on folding-type reflection, phase compensation is obtained on a reflection face, spherical waves are converted to plane waves, and therefore the antenna which is high in gain and efficiency and stable in beam pointing is realized. Under the Q-LINKPAN application background and directing at the development demands of a plane-integration and miniaturized long-distance wireless communication system, the low-section antenna which is high in gain and efficiency and capable of being integrated with a plane millimeter wave circuit is realized, the millimeter wave folding-type reflective array antenna has the advantages of being simple in structure, compact in size and low in cost, and the requirements for plane circuit integration are met.

The embodiment of the invention discloses a picture automatic sorting method comprising the following steps of receiving pictures to be sorted; reading feature categories in a feature library; extracting feature data of the pictures to be sorted according to the feature categories; matching the extracted feature data with corresponding preset feature data of the feature categories, and sorting the pictures to be sorted, of which the feature data can be matched with, into a category. The embodiment of the invention further provides a picture processing method based on the picture sorting, a picture automatic sorting device and a picture processing device based on the picture sorting. The embodiment of the invention improves the picture sorting efficiency and accuracy.

The invention discloses a notebook computer docking station which comprises a host box. A supporting plate for placing a notebook computer is fixed on the host box and provided with a positioning and fixing device which is used for rapidly positioning, clamping and fixing the notebook computer on the supporting plate and is connected with a connector corresponding to a signal output port of the notebook computer, and the connector is aligned to and inserted in the signal output port of the notebook computer after the notebook computer is positioned and fixed on the supporting plate. The notebook computer docking station has the advantages of rapidly positioning the notebook computer, being accurately and reliably abutted with the output port of the notebook computer, being capable of firmly fixing the notebook computer and having prominent anti-vibration and anti-impact capabilities and extended performance.

The invention discloses a dynamic bottleneck analytical method of a semiconductor production line. The method includes the steps that firstly, a key parameter capable of representing the bottleneck device characteristic is selected to be used as a bottleneck analysis index; secondly, the comprehensive bottleneck degree of equipment is described quantificationally through a combined definition method from the aspects of the relative production load, the utilization rate, the queue length of a buffer area and the like of the equipment, the bottleneck equipment is recognized by combining a bottleneck judging mechanism, and an equipment number is obtained; furthermore, a bottleneck prediction model of the semiconductor production line is established through an increased trimming type neural network based on the key parameter and the bottleneck equipment number, and the network structure is corrected in a dynamic mode based on a closed-loop control concept; at last, the key parameter affecting the bottleneck is analyzed through a single-factor testing method, and the reasonable value range of the parameter is obtained during bottleneck stabilization. By the adoption of the method, the bottleneck equipment can be recognized rapidly and effectively, the bottleneck at the next moment can be predicted, bottleneck drift is analyzed quantificationally under the condition of the dynamic effect of the key parameter, and a basis is laid for optimal dispatching of the semiconductor production line.