45 results about "Indoor positioning system" patented technology

The invention discloses a high-precision indoor positioning system based on a smart bracelet, and the system comprises a data processing module which is used for obtaining and preprocessing multi-source sensing data collected by the smart bracelet; the gait reckoning module is used for executing gait event detection and pedestrian dead reckoning processing; the wireless observation module is used for carrying out preprocessing and credibility evaluation on indoor wireless positioning observation data; the fusion positioning module is used for carrying out credibility weighted fusion; the trajectory constraint module is used for applying trajectory rationality constraint and correcting abnormal position points; the error correction module is used for constructing a positioning error dynamic correction model and executing online correction processing; and the track output module is used for carrying out smoothing and time resampling processing and extracting a human body position determination result set. The method is based on the multi-source perception fusion and federated Kalman dynamic correction method, achieves the indoor high-precision positioning of the smart bracelet, and has the advantages of continuous track, controllable error and high environmental adaptability.

This invention provides an indoor positioning system and method. A WiFi signal is generated via a WiFi access point. A first leaky-wave antenna converts the received WiFi signal into a first circularly polarized signal and propagates it to a target receiver. A second leaky-wave antenna converts the received WiFi signal into a second circularly polarized signal and propagates it to the target receiver. The second circularly polarized signal is orthogonal to the first circularly polarized signal. The target receiver obtains the target's indoor location information based on the first and second circularly polarized signals. This method eliminates the need for the target to switch between multiple WiFi access points, is less affected by WiFi signal quality, has strong applicability, and provides more accurate positioning.

A hybrid indoor positioning system comprises an electronic label provided with an acceleration sensing module, a first direction sensing module, a second direction sensing module and an operational module, the acceleration sensing module generates an acceleration signal, the operational module receives the acceleration signal and generates a movement data, the first direction sensing module and the second direction sensing module respectively generate a first direction signal, a magnetic force information and a second direction signal, the operational module receives the first direction signal and the second direction signal and generates a direction data, the electronic label is provided with a signal receiving module that generates an ambient wireless signal, the movement data and the direction data of the operational module are transmitted to a signal sending module; and a remote server, the remote server has a central processing unit, a signal receiving unit and a judgment model.

The application discloses a multi-screen fusion multi-information source intelligent push playing management method and system, which is connected with an airport multi-information screen cluster, comprises a data fusion module, a passenger portrait and state tracking module, an information strategy decision engine, a multi-level screen management module, a content generation and distribution module, a distributed screen control module and a man-machine interaction management interface; the data fusion module is used for accessing and processing multi-source heterogeneous data from an airport operation database, a passenger processing system, an indoor positioning system and a real-time passenger flow analysis system, and generating a unified airport real-time state view; the application allows an operator to conveniently make and regularly publish rich media content through a self-produced program template configuration and push module, supports batch management of a device group, planned on-off and state monitoring, perfectly unifies two functions of airport key operation information publishing and daily media content playing, and forms a complete, efficient and reliable multimedia information publishing and management platform.

The application discloses a kind of indoor positioning systems for fire safety evacuation, it is related to fire safety technical field, the indoor positioning system includes positioning terminal, wireless communication module, server and fire equipment control module, positioning terminal is worn on the body of indoor personnel, for real-time acquisition personnel's position information, and position information is sent to server by wireless communication module, server receives position information, and personnel is positioned according to stored high-precision indoor map, simultaneously, server also sends personnel's position information to fire equipment control module, to make fire equipment control module control the operation of fire equipment according to personnel position information, the indoor positioning system for fire safety evacuation of the application has very high positioning accuracy and reliability, positioning terminal uses ultra-wideband UWB positioning technology, can accurately determine personnel position in complex indoor environment.

According to an embodiment of the present disclosure, an indoor positioning system may include a magnetic field generation device configured to periodically generate an artificial magnetic field and propagate the artificial magnetic field to an indoor space through a conducting wire, a control device configured to adjust characteristics of the artificial magnetic field, control an operation of the magnetic field generation device, and store pattern information about the artificial magnetic field according to a location of the artificial magnetic field on the conducting wire, and a user terminal including a geomagnetic sensor, the user terminal being configured to detect, by using the geomagnetic sensor, the artificial magnetic field propagated through the conducting wire, compare a result of the detection of the artificial magnetic field with the pattern information, and measure, based on a result of the comparison, location information about a user in the indoor space.

The invention discloses a multi-anchor-node cooperative UWB indoor positioning method, device and equipment and a medium, and the method comprises the steps: introducing a plurality of anchor nodes to jointly receive an ultra-bandwidth positioning pulse signal transmitted by a processing card, and constructing a signal receiving time difference matrix in combination with information such as a signal arrival timestamp, signal receiving strength and environment perception parameters; the non-line-of-sight propagation probability among the anchor nodes is calculated, signal link reliability is quantified, signal strength and anchor node type information are combined, confidence weights are given to time difference measurement of different anchor nodes, a weight matrix is formed, interference of the anchor nodes which are greatly influenced by shielding, reflection or attenuation in final positioning calculation can be effectively reduced, and positioning accuracy is improved. And the positioning robustness and accuracy are improved. Multi-source sensing data, non-line-of-sight probability modeling and a dynamic confidence weight adjustment mechanism are introduced, effective compensation and adaptive optimization of channel uncertainty and anchor node difference in the UWB indoor positioning system are realized, and the high-precision positioning capability of the system is guaranteed.

The invention discloses a miniaturized broadband microstrip antenna, which is suitable for indoor positioning systems such as Bluetooth beacons and the like, and comprises a dielectric substrate, a patch layer arranged on the upper surface of the substrate, and a metal grounding plate positioned on the lower surface of the substrate, the patch layer comprises a radiation patch and a microstrip line connected with the radiation patch; the radiation patch is of a rectangular structure, and the radiation patch is provided with a cross-shaped parting slotting structure. A staggered parallel multi-strip-shaped defected ground structure is introduced to the metal grounding plate, and the staggered parallel multi-strip-shaped defected ground structure is a structure of five rectangular grooves which are arranged in a staggered parallel mode. According to the structure provided by the invention, the miniaturization and broadband performance of the antenna can be considered, and a new technical path is provided for the design of a small wireless terminal antenna.

The invention discloses an indoor positioning system and method, electronic equipment and a storage medium, and the system is characterized in that the system comprises a plurality of Wi-Fi access points which are distributed in all indoor floor areas, and each Wi-Fi access point is provided with a unique MAC address; the plurality of Bluetooth beacons are deployed at indoor key position points, and each Bluetooth beacon is configured with a unique MAC address; the mobile terminal is used for collecting real-time Wi-Fi signal intensity and Bluetooth signal intensity and reporting the real-time Wi-Fi signal intensity and the Bluetooth signal intensity to the positioning server; and the positioning server pre-stores indoor environment map data, a Wi-Fi signal library and Bluetooth beacon position information, and is used for calculating the current position of the mobile terminal according to the signal data reported by the mobile terminal. According to the positioning system provided by the invention, accurate positioning and floor judgment of indoor targets are realized through systematized signal acquisition, multi-signal matching and fusion processing.

The invention discloses a data interaction and initialization method of an indoor positioning system, and relates to the technical field of indoor positioning. According to the method, a dual-band communication architecture is constructed, ranging data between base stations and between the base stations and a moving target are transmitted in a main frequency mode, and configuration parameters, control instructions and moving target auxiliary information are transmitted in a low frequency mode; the master base station sends a startup signal to the upper computer after being started, generates synchronization information with a synchronization identifier and broadcasts the synchronization information to the slave base station after receiving a configuration instruction of the upper computer, and the slave base station feeds back, confirms and forwards in a relay manner after completing configuration to form an initialized base station network; and the moving target searches a main base station signal in a low-frequency mode, sends a registration request, and establishes a communication link with the main base station and the slave base station after receiving a response containing the identifier of the main base station, thereby completing system initialization. Through dual-band separation transmission and a standardized initialization process, data interference is reduced, parameter synchronization efficiency is improved, and stable operation of a positioning system is guaranteed.

This indoor positioning system comprises at least one slave device configured to generate reflected signals for a transmit signal transmitted from a master device. The slave device comprises: a signal generator configured to generate a signal having a specific pattern differing according to attributes of the slave device; a reflector for reflecting the transmit signal so as to generate a reflected signal that is delayed relative to the transmit signal; and a transmitter disposed between the signal generator and the reflector and configured to transmit the reflected signal, selectively containing the signal having the specific pattern, to the master device through the reflector.

A system and method for an anti-hopping algorithm for an indoor localization system. A method includes receiving a plurality of beacons, each of the plurality of beacons is received from a respective transmitter, pre-filtering the plurality of beacons to identify a subset of the plurality beacons that exceed a minimum signal threshold, and comparing a signal strength of each beacon of the subset to a strongest signal strength threshold of a currently assigned beacon. A method includes selecting a beacon from the subset, the selected beacon has been detected to exceed the strongest signal strength threshold of the currently assigned beacon a predetermined consecutive number of times, and assigning a location to the receiver, the location corresponds to a location of a transmitter of the selected beacon.

The invention relates to the technical field of wireless communication networks, and discloses a method for quickly establishing an indoor positioning system, which comprises the following steps of: among wireless communication nodes without position calibration, dynamically establishing a topological logic relationship based on Pearson's correlation coefficients of entropy change among the nodes by periodically calculating and broadcasting entropy representing signal environment fluctuation; according to the method, the node proximity relation is verified through entropy change synchronism, dependence of traditional positioning on physical coordinate calibration is avoided, and instantaneous self-organization of the topological network is achieved; environmental disturbance is reversed into a natural beacon for verifying a topological relation, so that the system endogenously maintains structural consistency in dynamic change; the terminal location description directly anchors environmental physical nodes, providing intuitive and robust relative location awareness.

Methods for identifying one or more items in close proximity to a mobile device and / or are within a digital image. The location of the mobile device can be determined using outdoor positioning systems (“OPS”), indoor positioning systems (“IPS”), or combinations thereof. The identity of the item or items can be determine using planograms; visual inventory; RFID handheld inventory; RFID overhead inventory; vision system inventory; UR; barcode; NEC; or combinations thereof. In some embodiments, the methods described herein include or involve identifying one or more items within a digital image, such as a photograph or video. The image has an identification (ID) / time stamp that is used to associate the items in the image that have been read in the same area as the image so that the items can be actively searched as a digital image to highlight or list items that are in the image.

The application discloses an indoor positioning system based on empirical mode decomposition and spatial autoregressive neural network, aiming at solving the problems of insufficient positioning accuracy and reliability of traditional ultra-wideband indoor positioning. The system is composed of a base station, a tag, a background server and a data processing terminal. The base station and the tag measure the distance through the ultra-wideband signal, the tag sends the positioning data to the server, and then the real-time positioning result is obtained through the data processing terminal. The main source of positioning error is the multipath effect of indoor signal. Empirical mode decomposition is used to reduce the noise in the signal, then spatial autoregressive neural network is used to model the multipath effect, and the multipath error is compensated, and finally the accurate position of the tag is calculated. Compared with the prior art, the application has higher positioning accuracy and robustness, the system network is easy to build, has strong portability, simple equipment, and is easy to popularize, and has great advantages and commercial prospects in the complex indoor positioning scene.

This invention relates to an indoor positioning system and method based on a multi-waveguide, multi-clamping antenna. The positioning system includes an access point, a central processor, three waveguides, several clamping antennas, and a transmitter. The access point is located in a corner of the room's ceiling and connected to the central processor. The three waveguides are connected to the access point and extend along the ceiling. x axis, y Axial and diagonal distribution, with [missing information] distributed on each waveguide. N The clamping antennas described herein have randomly distributed transmitters. The positioning method includes: first, simultaneously activating multiple clamping antennas on different waveguides; establishing a position estimation equation based on the received power closed-form expression and the actual received power at the access point; then, dividing the room into grid points and calculating the theoretical received power of all grid points; then, selecting the region with the smallest error to refine the grid and repeatedly evaluating the error function, gradually reducing the grid size to achieve the required positioning resolution; finally, selecting the grid point with the smallest error as the estimated user position. This invention enables accurate positioning in indoor scenarios.

An indoor positioning system includes a camera, a position detection sensor, a first communication module, memory storing at least one instruction, and at least one processor. The at least one processor is configured to, by executing the at least one instruction, generate positional information by recognizing a position of a vehicle moving on a road based on a position detection signal of the position detection sensor, and recognize vehicle license plate information and the position of the vehicle moving on the road based on an input image captured by the camera. The at least one processor is further configured to encode the positional information in a code-division multiple access (CDMA) method using a spreading code generated from the vehicle license plate information, and output the encoded positional information as a wireless signal through the first communication module.

The application discloses a data interaction and initialization method of an indoor positioning system, and relates to the technical field of indoor positioning. The method constructs a dual-band communication architecture, a main frequency mode is used to transmit ranging data between base stations and between a base station and a mobile target, and a low frequency mode is used to transmit configuration parameters, control instructions and mobile target auxiliary information; after a main base station starts, a start signal is sent to an upper computer, after a configuration instruction is received from the upper computer, synchronization information with a synchronization identifier is generated and broadcast to a slave base station, the slave base station feeds back a confirmation after completing configuration and relays forwarding, and an initialization base station network is formed; a mobile target searches for a main base station signal through the low frequency mode and sends a registration request, after receiving a response containing a main base station identifier, a communication link with the main base station and the slave base station is established, and system initialization is completed. Through dual-band separate transmission and a standardized initialization process, the application reduces data interference, improves parameter synchronization efficiency and guarantees stable operation of the positioning system.

The invention discloses a wireless signal RSS fingerprint spatial domain and frequency domain cross-modal indoor positioning method and system based on deep learning, and the method comprises the steps: carrying out the data enhancement of a WiFi signal RSS fingerprint spatial domain image through employing bicubic interpolation and double super-resolution, and obtaining a corresponding RSS fingerprint frequency domain image through two-dimensional Fourier transform. And inputting the RSS fingerprint spatial domain image and the RSS fingerprint frequency domain image as bimodals into a CNN and EMA combined cross-modal deep learning positioning model to obtain three-way spatial three-dimensional coordinates, and through a coordinate selection strategy, selecting the most reliable two coordinate points for averaging to obtain a final predicted three-dimensional coordinate. According to the invention, the precision and the robustness are obviously improved, and the performance is more excellent when the indoor positioning system is easy to have a larger error under the conditions of a complex environment and the like, so that the indoor positioning system which is high in accuracy, good in stability, high in applicability, low in cost and easy to popularize is designed.

The present invention relates to a multi-sensor fusion-based indoor and outdoor integrated positioning method and system. The method comprises: acquiring, by means of a receiving end of a current device, positioning signals of an indoor positioning system and an outdoor positioning system, and executing a network decision process to select an optimal positioning network, the network decision process comprising: on the basis of the quality of the positioning signals of the indoor positioning system and the outdoor positioning system, switching and selecting between positioning schemes; when signals of both the indoor positioning system and the outdoor positioning system are lost, on the basis of acceleration information and angular velocity information of an IMU reference system, using a pre-trained neural network model to predict a position change of the current device; and, when the position enters an indoor and outdoor transition area, performing fusion positioning on the basis of the indoor positioning system and the outdoor positioning system. Compared with the prior art, the present invention has the advantages of improving the positioning accuracy and robustness, achieving seamless indoor and outdoor navigation, and being capable of handling situations where signals are completely lost.

An indoor positioning system includes mobile devices and ultrawideband beacons that communicate over out-of-band channels. The mobile devices may retrieve beacon data from advertising channels or servers using Bluetooth Low Energy or REST APIs. The mobile devices generate and advertise device data for ultrawideband two-way ranging sessions. The beacons and mobile devices perform ultrawideband ranging to obtain distance measurements. The mobile devices calculate their positions using the distance measurements. The system may transition between GPS and ultrawideband positioning based on geofencing or accuracy comparisons. Load balancing may manage ranging sessions between multiple beacons and devices. The out-of-band communication enables efficient configuration exchange and seamless indoor / outdoor positioning.

This invention discloses a multi-QR code recognition method, a QR code-based mobile positioning method and system, relating to the field of image processing technology. The invention determines the center point of the QR code by horizontally and vertically searching the position detection patterns, and then uses a clustering algorithm to find the coordinates of the center points of the three position detection patterns for each QR code. Based on the fact that the midpoint of the detection pattern on the diagonal is the center point of the QR code pattern, the center position of the QR code in the image is calculated. The cross product of the vectors formed by the upper left and lower left detection points, and the vectors formed by the upper left and upper right detection points, is used to determine the order of the remaining two detection center points. The rotation angle of the QR code is calculated using the inverse trigonometric function between the vector formed by the upper left and upper right detection patterns and the horizontal vector. This solves the problems of high cost, high maintenance cost, and narrow application range of current indoor positioning systems.

This application discloses a multi-anchor node collaborative UWB indoor positioning method, apparatus, device, and medium. The method introduces multiple anchor nodes to jointly receive ultra-wideband positioning pulse signals emitted by a processing card, and constructs a signal reception time difference matrix by combining information such as signal arrival timestamps, signal reception strength, and environmental perception parameters. It calculates the non-line-of-sight propagation probability between each anchor node, quantifying the signal link reliability. Furthermore, it assigns confidence weights to the time difference measurements of different anchor nodes based on signal strength and anchor node type information, forming a weight matrix. This effectively reduces interference from anchor nodes that are significantly affected by obstruction, reflection, or attenuation in the final positioning calculation, improving positioning robustness and accuracy. The introduction of multi-source sensing data, non-line-of-sight probability modeling, and a dynamic confidence weight adjustment mechanism effectively compensates for and adaptively optimizes channel uncertainties and anchor node differences in the UWB indoor positioning system, ensuring the system's high-precision positioning capability.

The application relates to a single-base-station indoor positioning system and method, and belongs to the technical field of indoor positioning. The single-base-station indoor positioning system comprises a signal transmitting base station, a signal receiving end and a signal analysis and positioning module. The signal transmitting base station is installed at a specified indoor position according to a preset position constraint condition and is used for transmitting a positioning signal. The signal receiving end is used for receiving a direct signal of the positioning signal and a plurality of reflected signals of the positioning signal reflected by a plurality of indoor boundaries. The signal analysis and positioning module is used for determining a mirror signal transmitting base station corresponding to each reflected signal based on a time difference of arrival of each reflected signal and the direct signal, and determining the position of the signal receiving end based on each reflected signal and the position of the corresponding mirror signal transmitting base station. The application can realize indoor positioning by using only one signal transmitting base station.

The invention belongs to the technical field of indoor positioning, and discloses a self-adaptive anti-interference indoor positioning system and method in an emergency rescue scene, and the system comprises a signal receiving module, an anti-noise preprocessing module, a K-value self-adaptive positioning module, a dynamic weight fusion module, a positioning output module and an emergency adaptation module. The signal receiving module synchronously acquires a positioning signal and environment sensing data; the anti-noise preprocessing module improves the signal quality through filtering, noise reduction balancing and anomaly detection; the K value self-adaptive positioning module dynamically adjusts a K value in a K-NN algorithm and solves an initial coordinate; the dynamic weight fusion module optimizes a positioning result based on a three-dimensional weight model; the positioning output module displays and transmits data through the WIFI module; and the emergency adaptation module monitors environmental parameters, and switches each module to an emergency working state when triggering a threshold value. Through the technical means, the anti-interference capability, the real-time performance and the positioning precision of the positioning system in the emergency rescue complex environment are improved, and the requirements of rescue workers for indoor precise positioning and state monitoring are met.

An indoor positioning system includes: a wireless network device, configured to receive a positioning request initiated by positioning tag, and send a handshake communication request; a positioning headend, configured to communicate with the wireless network device and the positioning tag according to the handshake communication request, and collect radio wave signals sent by the positioning tag, and calculate the phase information of the positioning tag according to the radio wave signal; a positioning unit, configured to calculate position coordinate information of the positioning tag according to the phase information, thereby improving the positioning accuracy and reducing the cost.

This invention discloses a multi-level reliability evaluation method for BeiDou pseudosatellite indoor positioning systems, belonging to the field of pseudosatellite indoor positioning technology. This method can evaluate the reliability of indoor positioning systems in real time, solving the problem of unreliable positioning results caused by poor pseudosatellite data quality and external environmental interference, thus ensuring the reliability requirements of high-end applications based on indoor location services. The system includes a reliability evaluation model and a geographic prior information evaluation strategy, evaluating from both the data layer and the result layer, providing a relatively comprehensive reliability evaluation mechanism. Furthermore, the proposed method can dynamically evaluate the reliability of the location in real time, demonstrating considerable technical difficulty and innovation from both theoretical research and engineering application perspectives. Experimental results show that adding the reliability evaluation analysis method improves the average positioning accuracy by 74.6% and the reliability by 88.2%, verifying the effectiveness of the method described in this patent.

The invention discloses an indoor positioning system for fire-fighting safety evacuation, and relates to the technical field of fire-fighting safety, the indoor positioning system comprises a positioning terminal, a wireless communication module, a server and a fire-fighting equipment control module, the positioning terminal is worn on an indoor person and is used for collecting position information of the person in real time; the position information is sent to the server through the wireless communication module, the server receives the position information and positions personnel according to a stored high-precision indoor map, and meanwhile the server further sends the position information of the personnel to the fire fighting equipment control module. The indoor positioning system for fire safety evacuation has extremely high positioning precision and reliability, and the positioning terminal adopts an ultra wide band (UWB) positioning technology, so that the positions of the personnel can be accurately determined in a complex indoor environment.

The invention discloses an indoor positioning system and method, and relates to the technical field of indoor positioning. The indoor positioning system comprises at least one first optical module, at least two second optical modules, at least two control modules and a position calculation module. The first optical module is used for emitting a first optical signal. The second optical module is used for receiving the first optical signal, analyzing the first optical signal to obtain an analyzed first optical signal, and sending the analyzed first optical signal to the control module. The control module is used for receiving the analyzed first optical signal from the second optical module and transmitting the analyzed first optical signal to the position calculation module. The position calculation module is used for receiving the analyzed first optical signals from the at least two control modules and determining the position of the first optical module according to the analyzed first optical signals and a triangulation positioning algorithm. The system uses the visible light communication technology, is not influenced by external electromagnetic interference, ensures the accuracy and stability of positioning, is low in cost, and can be widely applied.

The invention discloses an indoor positioning system and method based on dynamic vision reference correction and a related product, and thoroughly solves the problem of the existing radio frequency positioning pain point through the innovative cooperation of dynamic vision and multi-mode radio frequency. Natural feature points are captured by the dynamic vision acquisition module, and high-precision positioning is realized through the reference correction positioning module in combination with initial coordinates of multi-mode radio frequency positioning. For the radio frequency drift defect, the layered progressive correction unit accurately judges the error degree and the visual reference reliability, the optimal strategy is matched to eliminate the drift, and the positioning precision reaches the centimeter level. The system constructs a dynamic reference library based on natural feature points, automatically updates the priority of the feature points, and avoids positioning failure caused by marker shielding or scene change. Layered correction logic is provided with a fault-tolerant mechanism, strategies can be switched during visual deviation such as light sudden change, and positioning continuity is guaranteed. Through dynamic analysis of scene interference characteristics, the system automatically adjusts parameters, adapts to multiple scenes, and has high precision and practicability.