79 results about "Indoor positioning system" patented technology

An indoor positioning system for use in wayfinding and navigation that provides location with limited infrastructure. The positioning system comprising at least one transceiver transmitting one or more signals used by at least two additional transceivers to calculate an estimated location of the first transceiver for use by other systems for wayfinding and navigation.

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.

The invention belongs to the technical field of unmanned aerial vehicle testing, and discloses an air-ground unmanned aerial vehicle wind resistance performance testing platform based on a physical information neural network. The air-ground unmanned aerial vehicle wind resistance performance test platform is composed of a wind field simulation system, a physical information neural network control system and an unmanned platform indoor positioning system. The wind field generated by the wind field simulation system is accurately controlled based on the physical information neural network control system, the complex wind field required by the air-ground unmanned aerial vehicle in the wind resistance test process of the air and ground subsystems is simulated, and the uniformity of each index of the wind field is ensured.

The invention provides a ranging error compensation method for indoor positioning precision time measurement, and aims to improve the precision and robustness of an indoor positioning system. The error type identification method under the LOS / NLOS mixed environment is established by combining the difference between LOS and NLOS signals, RSSI (received signal strength indication) information and a power attenuation model so as to accurately distinguish LOS and NLOS error signals, and corresponding error compensation models are respectively established. Meanwhile, the particle filter algorithm is introduced, so that the adaptability and robustness of the positioning algorithm to complex signal conditions are improved. The error compensation methods are not only suitable for a precision time measurement (FTM) technology, but also can be expanded to other indoor positioning technologies based on time measurement. Through experimental verification, the indoor positioning precision can be effectively improved, and the method has important application value in scenes with high positioning precision requirements.

The invention discloses a joint estimation indoor positioning method, a joint estimation indoor positioning system, a medium and equipment, and relates to the technical field of indoor positioning, and the joint estimation indoor positioning method comprises the steps that each anchor node sends a signal to a neighbor anchor node and collects RSSI data, the collected data is fitted, and the path loss index of each anchor node is estimated; performing k-means clustering analysis on the path loss index, and taking the mass center with the most indexes as a final path loss index estimation value; constructing a positioning problem by using a maximum likelihood estimation method and Huber loss, and converting the positioning problem into a joint optimization problem of hybrid semi-definite second-order cone programming; and dynamically updating a Gaussian mixture noise parameter through an EM algorithm, synchronously optimizing the position of a target node and the transmitting power of an anchor node in each iteration, and outputting a final positioning result. According to the method, the target node is positioned under the condition that malicious anchor nodes and Gaussian mixed noise exist, and the accuracy and efficiency of positioning are improved.

The present invention relates to an indoor positioning system 300 for a wireless communication network 200. The indoor positioning system 300 includes one or more anchor devices 302a-302n, a central entity 306, and one or more tag devices 304a-304n. Transmission of signals 301a-301n by the one or more tag devices 304a-304n is controlled so that one signal 301a is transmitted at a time on a given radio resource, and the tag device 304a transmitting one signal 301a is the tag device 304a to be located. At least one anchor device (302a) of the one or more anchor devices (302a-302n) is configured to receive, via an antenna array (500), a signal (301a) transmitted by a positioned tag device, determine an estimate of a direction of arrival (DOA) based on the received signal (301a) by applying a first power law based algorithm and a second power law based algorithm, respectively, and transmit the estimated DOA together with DOA metadata to a central entity (306). The present invention also relates to an indoor positioning method, an anchor device, a computer program, and a computer-readable medium.

To provide an indoor positioning device which does not interfere with construction work at a construction site.SOLUTION: An indoor positioning device is provided, having a first wireless communication function, second wireless communication function, and illumination function. The first wireless communication function is used for indoor positioning. The second wireless communication function is used to communicate with other devices. The indoor positioning device is integrated with illumination and is installed on a ceiling.SELECTED DRAWING: Figure 1

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.

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 present invention discloses an indoor positioning hardware processing module and a processing method thereof, which belong to the field of indoor positioning technology. The processing module is deployed in an indoor positioning system including a programmable logic module and a host computer, and includes a main program module, a host computer interface module, a frame filling and frame parsing module and a ranging logic control module. The main program module generates a linear frequency modulation spread spectrum reference signal and executes system initialization and main control processes; the host computer interface module realizes device registration and data return; the frame filling and frame parsing module completes the application layer processing of the frame data; the ranging logic control module coordinates the ranging interaction with the programmable logic module. The processing method includes the steps of signal initialization, device registration, frame data processing, ranging cycle and result return. The present invention improves the automated ranging efficiency and communication reliability of the indoor positioning system through module division of labor and coordination mechanism, and solves the problem of low process automation in the prior art.

The invention relates to the technical field of indoor positioning, and discloses an indoor positioning system and method. The system comprises an acquisition unit used for converting a target video acquired in real time into video frames according to a first time interval; the feature extraction unit is used for extracting an initial feature from a current video frame through a pre-trained convolutional neural network, and processing the initial feature to obtain a target feature; the calculation module is used for constructing an index of a K-d tree structure according to the image features of the sample pictures; the matching unit is used for controlling the calculation module to execute a K nearest neighbor algorithm and matching the image feature most similar to the target feature in the index; and the positioning unit is used for acquiring corresponding position information based on the most similar image features and positioning the current video frame. The system can well adapt to an indoor complex environment, and high-precision real-time indoor positioning is realized.

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 relates to the technical field of medical supplies, in particular to a portable elderly emergency call management system and method. The system comprises a first terminal configured to be used for collecting a first data packet of the elderly, and the first data packet comprises posture data and voice data; a second terminal configured to output voice data; the first terminal and / or the second terminal are / is in communication connection with a fourth terminal for processing the first data packet; the fourth terminal is in communication connection with a third terminal which is associated with medical care and is used for transmitting voice data; the first terminal and / or the third terminal are / is also provided with a second unit for navigation; and the second unit acquires the final positioning information of the elder through the navigation positioning system, determines whether the elder is currently located indoors or outdoors based on the positioning offset distance and the preset offset threshold value, and decides that the second unit uses the indoor positioning system or the navigation positioning system, so that the emergency call of the first terminal is operated to quickly call the medical personnel, and the operation is convenient. Therefore, the rescue efficiency of the elderly patients is improved.

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 invention discloses an indoor positioning method, an indoor positioning system, an indoor positioning device and a medium. The method comprises the following steps: acquiring a plurality of sounding reference signals uploaded by at least one radio frequency unit; the sounding reference signal is a signal sent by the terminal; grouping the plurality of sounding reference signals according to the time domain information in each sounding reference signal to obtain a plurality of groups of sounding reference signals; the time domain information in the same group of sounding reference signals is the same; determining a target IMSI (International Mobile Subscriber Identity) corresponding to the target time domain information by utilizing a one-to-one correspondence mapping relationship between the time domain information and the IMSI of the terminal; the target time domain information is any one of multiple pieces of time domain information; determining a target sounding reference signal with the highest signal strength in a group of sounding reference signals corresponding to the target time domain information; determining position information of equipment corresponding to an equipment mark according to the equipment mark in the target detection reference signal; and taking the position information as the position information of a terminal corresponding to the target IMSI.

The invention provides an RFID indoor positioning system and method based on multi-feature information, and relates to the field of RFID and indoor positioning. In order to solve the technical problems of weak anti-interference capability and large positioning error of a single signal in indoor positioning, high-precision indoor positioning is realized by combining multidimensional feature information such as antenna readability, phase difference and RSSI (Received Signal Strength Indicator) signal strength and adopting a two-stage positioning strategy. In the coarse positioning stage, regions are divided according to antenna readability, and region subdivision is carried out by combining an RSSI difference value; in the fine positioning stage, a positioning algorithm is dynamically selected according to the readability parameter of the antenna: when the readability is greater than 2, a hyperbolic equation is constructed based on the phase difference, and a candidate position is optimized by using an RSSI (Received Signal Strength Indicator) difference value; and when the readability is 2, establishing a positioning equation set through the combination of the phase and the RSSI to solve a target coordinate. The method effectively solves the problems of weak anti-interference capability and large error of a traditional single signal feature positioning method, has the advantages of low deployment cost, high positioning precision, high environmental adaptability and the like, and can be widely applied to indoor positioning scenes such as warehouse logistics, intelligent shopping malls, medical navigation and the like.

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.