50results about How to "Narrow down your targeting" patented technology

The invention discloses an indoor positioning method based on wireless sensor networks of fingerprint data. According to the method, M anchor nodes are allocated in each room of a two-dimensional indoor planar graph, the anchor nodes have the precedence recognition range, blind nodes are located in any positioning area, and one wireless sensor network is formed by all the nodes in a self-organization mode; the blind nodes start the positioning process, a room number is determined according to the blind node signal strength values collected by the anchor nodes in the rooms, the room grade is positioned, the information of the anchor nodes in the room is received, signal strength fingerprint data of the positions where the anchor nodes are located are recorded, the coordinate values of the blind nodes are calculated according to the fingerprint data and are modified, and the coordinate grade is positioned. The adopted signal strength fingerprint data have real-time performance and environment adaptability, and the room grade and the coordinate grade can be positioned and applied. Compared with the traditional fingerprint database technology, the indoor positioning method is simpler, easy to operate, high in positioning accuracy and capable of meeting the requirement for indoor positioning.

The invention discloses a deep learning-based binaural sound source positioning method in a digital hearing aid. The method comprises the following steps: firstly, decomposing a binaural sound sourcesignal into a plurality of channels through a gammatone filter, extracting a high-energy channel through a weighting coefficient, then extracting a first type of features by using a head-related-transform function (HRTF), namely an Interaural Time Difference (ITD) and an Interaural Intensity Difference (IID) which are used as inputs of deep learning, and dividing a horizontal plane into four quadrants to narrow a positioning range; secondly, extracting a second type of features of head-related transform, namely an Interaural Level Difference (ILD) and an Interaural Phase Difference (IPD); andfinally, in order to realize more precise positioning, taking the first and second types of four features as inputs of next deep learning, thereby obtaining an azimuth angle of sound source positioning. Precise positioning of 72 azimuth angles is realized on the horizontal plane from 0 degree to 360 degrees at a step length of 5 degrees.

The present invention relates to the unmanned aerial vehicle wireless charging technology field, and discloses a method and system for automatic wireless charging of an unmanned aerial vehicle. In the unmanned aerial vehicle automatic wireless charging method, a four-step localization method is employed and comprises: firstly, performing coarse positioning through a satellite, and obtaining a coarse positioning area; secondly, performing fine positioning at the coarse positioning area through adoption of infrared ray intensity, and obtaining a fine positioning area; thirdly, performing finer positioning at the fine positioning area through adoption of laser enclosed to a certain area, and obtaining a finer positioning area; and fourth, detecting point laser at the finer positioning area, obtaining final positioning, and performing automatic wireless charging after the final positioning. The positioning precision is very high, the algorithm is simple, the calculation amount is little, the positioning speed is fast, the wireless charging efficiency and the unmanned aerial vehicle cruising ability are greatly improved, the requirement for the hardware performance is low, and the cost is greatly reduced.

The invention discloses a method and a device for detecting a voice service noise. The method comprises the steps as follows: receiving a voice frame transmitted by a transmitter; detecting whether the voice is correct or not according to any one detection field of a promissory voice frame format, wherein the detection field is relative to the correctness of the voice frame; and determining a noise package is received when the voice frame is incorrect. The method and the device can detect that whether a noise is generated during the calling of users, can assist positioning or solve a partial noise problem, or reduce the positioning range of the noise problem, and directly or indirectly improve voice calling quality of users.

The invention provides a positioning method and device based on the network topology. The method comprises the steps of obtaining performance data of at least one preset site online accessed by users, extracting network topology feature vectors corresponding to the users from the obtained performance data, dividing the users corresponding to the same or similar network topology feature vectors into the same user group, positioning any user in any divided user group, and determining the area which the positioning result belongs to the area where the user groups are located. According to the positioning method and device, the positioning range of PC users can be effectively reduced to the low-level areas such as street scenes and cells, and therefore networking services based on the geographic position can be provided for the PC users more effectively.

The invention provides a circuit model-based single-phase earth fault section location method, which comprises the following steps: in case of a single-phase earth fault at a certain position in a power distribution network, acquiring sampling values of a zero sequence voltage uM0 and a zero sequence current iM0 of the fault of a bus position (which is recorded as M end, and a next monitoring endaway from the M end by 1 is an N end) of a power supply end of the region according to data of a fault recording device; fitting the discrete sampling values of the zero sequence voltage uM0 and the zero sequence current iM0 by using the maquart method to acquire continuous time functions uM0(t) and iM0(t); calculating a zero sequence voltage uN0(t)c and a zero sequence current iN0(t)c of the nextmeasurement point N which is 1 away by using a distributed parameter circuit model; respectively comparing the calculated zero sequence voltage uN0(t)c and zero sequence current iN0(t)c of the N endwith a zero sequence voltage uN0(t) and a zero sequence current iN0(t)c which are obtained by sampling and fitting at the position N, and if the voltages and the currents are consistent, determining that the MN section is not a fault section, and continuously searching the next line; if the voltages and the currents are not consistent, determining that the MN section is a fault section. The methodcan locate a single-phase earth fault section on the basis of not increasing the hardware investment.

The embodiment of the invention discloses a parking lot entrance positioning method and device in parking positioning and a vehicle-mounted terminal. The method comprises the steps of obtaining a parking lot image collected by a camera module and detecting semantic information of the parking lot image when it is detected that a vehicle drives into an entrance of a parking lot and it is judged thata position indicated by an initial vehicle pose of a positioning module is located in a preset initialization identification area; determining a first vehicle pose of the vehicle through a pose regression model based on the semantic information of the parking lot image and the initial vehicle pose, matching the semantic information of the parking lot image with semantic information of each position point in a preset map according to the first vehicle pose, and determining a second vehicle pose of the vehicle according to a matching result, wherein the pose regression model is obtained by training in advance according to a plurality of sample parking lot images collected in the initialized recognition area. By applying the scheme provided by the embodiment of the invention, the positioningprecision at the entrance of the parking lot can be improved.

The invention discloses a high-voltage interlocking troubleshooting system for an electric automobile. The system comprises a plurality of stages of high-voltage interlocking loops, each stage of high-voltage interlocking loop is formed by connecting a plurality of high-voltage devices in series through a low-voltage interlocking wire harness, and the high-voltage interlocking loop is provided with an indicator light circuit which is used for lightening or not according to a high-voltage interlocking state. The system has the advantages that the system is simple and reliable, the position of the interlocking fault or the corresponding interlocking fault loop can be rapidly judged according to the on-off state of the light-emitting indicator light, the positioning range of the interlocking loop can be rapidly narrowed, and the position of the interlocking fault can be determined in time.

The invention belongs to the technical field of indoor positioning, and particularly relates to an indoor positioning method, an indoor positioning device, a computer readable storage medium and terminal equipment. The method comprises the following steps of acquiring current Wi-Fi fingerprint data acquired by terminal equipment in a specified building; processing the current Wi-Fi fingerprint data by using a preset floor classification model to obtain the current floor of the terminal equipment in the specified building; selecting a Wi-Fi fingerprint database sub-base corresponding to the current floor from the Wi-Fi fingerprint database of the specified building; and calculating a positioning coordinate of the terminal equipment in the specified building according to the current Wi-Fi fingerprint data and the Wi-Fi fingerprint data sub-database. According to the embodiment of the invention, the whole indoor positioning process is decomposed into two processes of floor positioning andcoordinate positioning, and compared with the traditional mode of directly carrying out coordinate positioning in the whole building, the method and the device have the advantages that the calculatedamount is greatly reduced, and the method and the device are more practical in large-scale indoor positioning.

The invention discloses an on-site positioning system and method for equipment in a cabinet, and the system integrates the visual navigation and positioning of the cabinet and the visual display of the equipment state through the mutual cooperation of an upper computer, a cabinet positioning system, a mobile terminal and an equipment state indication system: the positioning of a target cabinet ina machine room belongs to the local positioning, and the positioning of the equipment in the cabinet belongs to the precise point-to-point positioning. The positioning method provided by the inventionnot only improves the positioning speed, but also improves the positioning accuracy. According to the operation and maintenance management system and method for the equipment in the cabinet, system expansion is carried out on the basis of a field positioning system of the equipment in the cabinet, self-adaptive management of the equipment in the cabinet in multiple dimensions is achieved, and themanagement efficiency and accuracy of a machine room are greatly improved.

The invention provides a fault access link screening method and device. The method comprises a step of receiving a first access link alarm information, a step of screening a target access link comprising a main call server and a called server from all access links of a service network according to the identification information of the main call server and the called server in the first access link alarm information, a step of screening an access link comprising the call server and the called server indicated in each second access link alarm information from the target access link level by level according to the called server comprised in the target access link received in a time window and all second access link alarm information sent by the same level server and other low level servers of the called server when a system time reaches the end time of the time window where the first access link alarm information is located, and storing the access link as a fault access link. According to the method and the device, the efficiency of positioning the fault access link can be improved.

The invention discloses a multi-namespace LBA (logical block addressing) processing method and device. The method includes: receiving an instrument sent by a mainframe, wherein the instruction designates one namespace from multiple namespaces, each namespace includes multiple firmware LBA segments, and each firmware LBA segment has a corresponding segment number and includes multiple firmware LBAs; calculating the segment number of the corresponding firmware LBA segment of the corresponding mainframe LBA of the instrument in the namespace designated in the instrument, and determining the location of the corresponding firmware LBA of the mainframe LBA in the firmware LBA segment corresponding to the segment number so that the mainframe can execute the instruction on the basis of the firmware LBA corresponding to the location. With the method, conversion from the mainframe LBA to the firmware LBA is performed easily and simply, and the mainframe is conveniently positioned to the firmware LBA to execute the instrument; the device corresponds to the method, and the mainframe LBA is converted into the firmware LBA easily and simply.

The invention relates to a menu recommending system based on face characteristics and a method thereof. The menu recommending system comprises user terminal equipment and a remote server. The remote server is connected with the user terminal equipment. The remote server stores a face characteristic database which reflects constitution problems of common users. The face characteristics in the facecharacteristic database correspond with the constitution problems of the common users. A user acquires the face characteristics in the face characteristic database in the remote server and the constitution problems which correspond with the face characteristics by means of the user terminal equipment, so that the user acquires the self constitution condition of the user according to comparison between the actual condition of the self face and the acquired face characteristics. The remote server performs feedback of the face characteristics in the face characteristic database and the constitution problems which correspond with the face characteristics to the user terminal equipment. The remote server can intelligently generate the customized diet therapy menu which matches the constitutionproblems of the user.

The invention relates to the technical field of line information acquisition, and discloses a line acquisition method and device based on Internet positioning, and the method comprises the following specific steps: employing the distribution simulation of a line to establish a tree diagram line distribution diagram, and enabling the nodes in the tree diagram line distribution diagram to be line branch points, a branch line is arranged between two nodes in the tree diagram line distribution diagram, and the length of each branch line is determined; according to the line acquisition method and device based on Internet positioning, the tree diagram line distribution diagram is established through line simulation, and the IP address is set at each fulcrum position of the line, so that the positioning range of the branch line can be narrowed, the positioning precision of the branch line can be improved, and the positioning accuracy of the branch line can be improved by acquiring electromagnetic waves in the line. And inflection points of abnormal changes of electromagnetic waves and time for electromagnetic wave acquisition modules at two ends of the line to acquire the inflection points of the electromagnetic waves are recorded, so that the position of a fault point relative to a line node is accurately calculated.

The invention relates to a transformer robotic fish positioning method based on an ultrasonic array hyperbolic algorithm. The transformer robotic fish positioning method comprises the following stepsthat: depth information of a miniature robotic fish is acquired; a three-dimensional positioning model of the miniature robotic fish is simplified into a two-dimensional positioning model; the miniature robotic fish transmits a modulated ultrasonic signal through an ultrasonic transmitting device; the transformer receives an ultrasonic signal transmitted by the miniature robotic fish through an ultrasonic receiving array; the ultrasonic receiving array identifies the area where the miniature robotic fish is located; the ultrasonic receiving array adopts a cross-correlation algorithm to calculate the distance delay of different sensors in the ultrasonic receiving array; and a hyperbolic curve is drawn by adopting a hyperbolic curve algorithm, wherein the intersection point of the hyperboliccurve is the position of the miniature robotic fish. According to the method, the three-dimensional positioning model of the miniature robotic fish is converted into a depth calculation and two-dimensional positioning model, the stored data size, data updating and data searching amount can be obviously reduced, the area where the robotic fish is located is recognized through the two sets of receiving arrays, and the rapid and real-time positioning function of the robotic fish is achieved.