107 results about "Indoor positioning system" patented technology

The invention relates to the technical field of exhibit recommendation, and particularly discloses an exhibit first push item optimization method combining a user portrait and user positioning, which extracts user positioning data from an indoor positioning system, and determines a target exhibit group based on real-time position and orientation information of a user, and then introducing a deep learning technology to perform semantic analysis on the user portrait data to extract user portrait features, and performing semantic matching analysis on the user portrait features and feature tags of each exhibit in the target exhibit group to determine an exhibit first push item from the target exhibit group. Through the mode, the behavior preference of the user and the real-time physical environment information can be comprehensively considered, a more accurate and personalized exhibit recommendation service is provided for the user, then the visiting experience of visitors is improved, and the resource utilization efficiency of culture display places such as museums and exhibition halls is optimized.

According to the mobile phone terminal multi-source fusion 3D visual high-precision indoor navigation method, firstly, an improved robust PDR scheme based on a built-in MEMS sensor of an intelligent terminal is constructed, a dynamic optimal filtering measurement model is constructed by taking INS as core optimization and utilizing multilayer constraint data as observation data, sensor errors are estimated and compensated in real time, and robustness and positioning precision are improved; secondly, establishing a shortest path constraint improved magnetic field matching algorithm, adding the magnetic declination as a magnetic field fingerprint of one dimension into the magnetic field matching algorithm, respectively solving a shortest path constraint result by utilizing the magnetic field fingerprints of multiple dimensions, solving an overall matching result, and reducing a mismatching probability; and finally, by utilizing complementary characteristics of different positioning data sources, an algorithm fusing PDR, magnetic field and Bluetooth multi-source data is established, a quality control mechanism is set, the precision and the robustness of the positioning system are improved, the visual indoor positioning system based on the intelligent terminal is realized, and the integrated navigation positioning precision and the robustness are good.

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 relates to an indoor and outdoor integrated positioning method and system based on multi-sensor fusion, and the method comprises the steps: collecting positioning signals of an indoor positioning system and an outdoor positioning system through a receiving end of current equipment, executing a network judgment process, and selecting an optimal positioning network; the network judgment process comprises the following steps: switching and selecting a positioning scheme according to the positioning signal quality of the indoor positioning system and the outdoor positioning system; when the signals of the indoor positioning system and the outdoor positioning system are lost, predicting the position change of the current equipment by adopting a pre-trained neural network model according to the acceleration information and the angular velocity information of the IMU reference system; and when entering the indoor and outdoor boundary area, carrying out fusion positioning based on the indoor positioning system and the outdoor positioning system. Compared with the prior art, the method has the advantages that the positioning precision and robustness are improved, indoor and outdoor seamless navigation is realized, and the situation that signals are completely lost can be handled.

The invention provides an indoor positioning system and method based on passive indoor distribution, and the method comprises the steps: deploying two sets of antennas outdoors, receiving a frequency 1 signal through a feed-in point 1, receiving a frequency 2 signal through a feed-in point 2, carrying out the amplification and filtering of the two signals through a satellite signal processing unit, and reserving a target frequency band; a frequency 1 signal and a base station information source are combined into an A-path signal, the length # imgabs0 # of each branch is covered and recorded through an indoor distribution system, a frequency 2 signal is independently transmitted as a B-path signal, the length of each branch is recorded as # imgabs1 #, and a time delay unit is configured to adjust signal synchronization; the method comprises the following steps: acquiring a pseudo-range difference between A and B paths of signals, establishing a coarse-grained fingerprint database of region matching, and combining geomagnetic sequence data to construct a high-precision fine-grained fingerprint database; the area is preliminarily determined through pseudo-range difference matching, and then terminal coordinates are accurately positioned according to geomagnetic data. According to the scheme, through dual-frequency signal fusion and layered fingerprint matching, the problem of satellite signal shielding in a complex scene is solved, and the positioning precision and reliability are improved.

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.

Methods and systems provide a computer technologic enhanced experience to a user when the user visits an indoor environment. A method may include computer readable instructions for identifying and tracking the user in the indoor environment using an indoor positioning system. An indoor positioning system may include a leaky feeder cable network, a plurality of Wi-Fi access points and location tracking using triangulation and Tine-to-Flight calculations. Further, based on the tracking of the user, the user is provided with an augmented navigation route for navigating in the indoor environment. The optimized navigation route is displayed on a virtual 3D model of the indoor environment. Further, the method comprises providing augmented item list to the user while navigating in the indoor environment, such that the augmented item list is generated via the use of advanced analytics, AI / Machine learning capabilities and computer vision based machine learning model for object tracking and recognition.

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 present invention provides a method and device for detecting abnormal points of indoor positioning Bluetooth beacons, which relates to the field of indoor positioning. In this method, a first neighborhood and a second neighborhood of a first beacon point are obtained from a set of beacon points; a first average value of the coordinates of the beacon points in the first neighborhood is calculated, and a second average value of the coordinates of the beacon points in the second neighborhood is calculated, and an offset score of the first beacon point is calculated according to the first average value and the second average value; an average offset score of all the beacon points in the set of beacon points is calculated, and the offset score is compared with the average offset score; a weighted distance is calculated according to the comparison result, a subspace offset factor is calculated according to the weighted distance, and the beacon points with the subspace offset factor greater than a threshold are marked as abnormal points. Implementing the technical solution provided by this application can effectively identify the abnormal points of Bluetooth beacons indoors and improve the stability and accuracy of the indoor positioning system.

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 discloses a network-connected vehicle-road cooperation test system and a test method thereof, and the method comprises the steps: carrying out the road end positioning of a reduced-scale road scene and a reduced-scale intelligent vehicle through a high-precision indoor positioning system, and obtaining the road end sensing data; regional centralized scheduling control calculation is carried out through the cooperation server according to road end sensing data and vehicle state information reported by the reduced-scale intelligent vehicles, a multi-vehicle cooperation control instruction is obtained, and human control analog signals, automatic driving setting information or the multi-vehicle cooperation control instruction are sent to the reduced-scale intelligent vehicles through the intelligent vehicle control unit. The intelligent vehicle is simulated to run in the reduced-scale road scene through the reduced-scale intelligent vehicle, and simulation data reproduction is performed on the reduced-scale road scene and the reduced-scale intelligent vehicle through the digital twin unit according to the scene data of the reduced-scale road scene, the road end sensing data and the vehicle state information. According to the invention, the efficiency and reliability of the network-connected vehicle-road collaborative simulation test are improved, and the method can be widely applied to the technical field of intelligent traffic.

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.

The present invention discloses a security detection method for a BLE Beacon indoor positioning system, which includes the following steps: obtaining the beacon packet sequence order; establishing a hidden Markov model using a training set, and calculating the lowest probability of the sequence under the hidden Markov model using a validation set; the anchor node broadcasts beacon packets, and after reaching the scanning time interval, receives the beacon packets of other anchor nodes and arranges them into a sequence order; calculating the lowest probability of the sequence under the hidden Markov model, comparing it with the lowest probability obtained from the validation set to determine whether there is an abnormality in the scanning; when the cloud server receives abnormal beacon packets or reaches the security detection time interval, it performs security detection, and detects the abnormal anchor nodes attacked in the beacon packets through a consistency check method. The present invention neither requires the anchor node to add additional hardware modules nor requires additional hardware detection devices, greatly reducing the cost of ensuring the security in the BLE Beacon indoor positioning system, and also being able to improve the security of the indoor positioning system.

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.