5440 results about "Bluetooth" patented technology

The invention relates to the technical field of communication control, and discloses a self-adaptive frequency jump method, device and equipment for a low-power-consumption dual-mode Bluetooth chip, and the method comprises the steps: obtaining a current Bluetooth mode, detecting the channel quality of a communication environment, obtaining the basic characteristics of the channel quality, and constructing a channel decision management framework; the communication interference condition is detected in real time, the channel decision management framework is adjusted to avoid interference, and real-time channel quality monitoring and channel selection directivity analysis are carried out according to the adjusted channel decision management framework to obtain channel selection reference features. According to the method, channel selection and frequency hopping strategies are optimized through a self-adaptive frequency hopping mechanism, channel frequency hopping decision preprocessing of mode conversion is carried out on another Bluetooth mode on the basis of channel selection reference characteristics, collaborative decision of channel frequency hopping is carried out, and the dual-mode Bluetooth chip is driven to carry out channel frequency hopping processing. The problem that in the prior art, a fixed frequency hopping mechanism is difficult to adapt to the communication requirement of dual-mode Bluetooth is solved.

The invention relates to the technical field of automobile Bluetooth control, in particular to an automobile Bluetooth control method and system based on a keyless entry mode. According to the method, the dynamic behavior time sequence of each Bluetooth device in the vehicle-mounted Bluetooth sensing area of the automobile is compared and analyzed, the candidate Bluetooth device with the control intention is screened out, and the recognition accuracy is improved; the real-time signal intensity, historical user operation behavior data and equipment trust level of the candidate Bluetooth equipment are comprehensively considered, and the control priority of each candidate Bluetooth equipment is fused and analyzed, so that flexible and accurate authority management is realized; selecting the candidate Bluetooth device with the highest control priority as an authorized Bluetooth device to establish a communication link and distribute the automobile Bluetooth control authority to ensure the reasonable distribution of the control authority; when the automobile runs, the real-time position of the authorized Bluetooth device is obtained, the Bluetooth device control authority corresponding to the automobile Bluetooth is dynamically adjusted by combining the corresponding electronic fence boundary of the automobile, and potential safety hazards are effectively reduced.

The invention discloses a vehicle-mounted Bluetooth anti-interference method and related equipment, and relates to the technical field of vehicle-mounted Bluetooth, and the method comprises the steps: obtaining the real-time interference data of the environment where the vehicle-mounted Bluetooth is located; inputting the real-time interference data into a preset anti-interference decision model to obtain a target optimization strategy; and adjusting the communication link of the vehicle-mounted Bluetooth according to the target optimization strategy. According to the invention, by sensing the environmental interference in real time and intelligently deciding and optimizing the communication strategy, high stability and strong anti-interference performance of the vehicle-mounted Bluetooth in a complex interference scene can be realized.

1. The name of the product under this design: Earhook Bluetooth Headset (YF28). 2. Purpose of this design product: used for communication and audio transmission. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the key points of the design: 3D image of component 1.

1. The name of the design product: Bluetooth headset (L316B). 2. The use of the design product: for receiving and playing audio. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: reference Figure 1 in use.

The invention relates to the technical field of Internet of Things communication, in particular to an Internet of Things intelligent water meter ad hoc network communication method based on parameter dynamic evaluation, which comprises the following steps: acquiring a state beacon packet; calculating a comprehensive score of each neighbor node according to the NB-IoT signal quality parameter, the Bluetooth link quality parameter, the remaining power percentage and the historical relay task times; judging whether the comprehensive score exceeds a threshold value or not according to the comprehensive score, if the comprehensive score exceeds a first threshold value, selecting a target node, establishing Bluetooth GATT connection, transmitting the water meter data to the target node, uploading the water meter data to a cloud server in batches in a preset low-power-consumption time window, and if the comprehensive score is lower than the first threshold value but higher than a second threshold value, transmitting the water meter data to the cloud server; and if so, starting a limited flooding broadcast mechanism. Therefore, the problems that in the prior art, power consumption is high, replacement cost is high, operation and maintenance are inconvenient, cost is increased by depending on a fixed relay, no load balance exists, and manpower is increased by on-site reading are solved.

The invention belongs to the technical field of Bluetooth indoor positioning, and relates to a Bluetooth AOA and RSSI fusion indoor positioning method based on deep learning, which comprises the following steps: step S10, a Bluetooth positioning base station receives a CTE signal sent by a signal source by using a BGAP protocol, and extracts I / Q data and RSSI data in the CTE signal; step S20, the Bluetooth positioning base station calculates the azimuth angle, the pitch angle and the distance of the signal by extracting the data, and uploads the azimuth angle, the pitch angle and the distance to the proxy server through an MQTT protocol; step S30, the PC subscribes to the proxy server, downloads azimuth angle, pitch angle and distance data, performs Kalman filtering on the angle data, and performs moving average filtering on the distance information; and S40, multiplying the filtered data by own transpose, inputting the data into a deep learning model for training, and finally outputting a label position coordinate. The distance information of the RSSI and the azimuth angle and pitch angle information of the AOA are fused, Kalman filtering and moving average filtering are used for processing data, and the specific position of the label is predicted through a deep learning network.

The invention relates to the technical field of voice recognition, in particular to a Bluetooth headset AI voice control method and system, and the method comprises the following steps: collecting a voice sample, carrying out the feature extraction of a voice signal through employing a Mel-frequency cepstrum coefficient, and generating voice feature data; and inputting the voice feature data into an acoustic model, and improving the recognition rate of the key instruction words by the acoustic model through learning features to obtain an optimized acoustic model. According to the method, acoustic feature capture is realized through voice signal feature extraction, the recognition accuracy of the key instruction is improved in cooperation with deep learning of acoustic features, the influence of different user speech speeds on the recognition effect is overcome by applying the time alignment technology of voice input, and the stability of the control instruction in different use scenes and speech speed changes is ensured. In addition, the recognition capability of a specific command is further mined and optimized by means of statistical characteristic analysis of voice, and efficient and automatic recognition and extraction of key control commands in continuous speech streams are completed.

The invention relates to the technical field of keyboard pairing, and discloses a keyboard multimode pairing method and device, equipment and a storage medium. The method comprises the following steps: establishing a switching time calculation model of a keyboard according to the reference switching time of keyboard hardware, a protocol node cooperation coefficient, an equipment response weight coefficient and a pre-connection optimization coefficient; calculating the theoretical optimal switching time of the current switching scene; selecting a working mode of single-node direct switching, double-node pre-connection or three-node parallel pre-connection of a keyboard Bluetooth node, a 2.4 GHz node and a USB node; activating a corresponding communication node, sending a connection handshake signal to the target equipment and establishing a communication link pre-connection state; and switching keyboard input and output from the current equipment to the target equipment to finish quick connection switching between the equipment. According to the invention, a pre-connection mechanism is adopted, the target equipment connection is established in advance before the user completes the switching instruction, passive response switching is converted into active prediction switching, and instantaneous equipment switching is realized.

The invention belongs to the technical field of mobile wireless positioning, and particularly relates to a Bluetooth and UWB fusion positioning method and system based on Kalman filtering, and the method comprises the steps: taking a UWB distance measurement value and a distance converted by a Bluetooth signal distance conversion model as an observation vector through combining the low power consumption characteristic of a Bluetooth signal and the high precision advantage of UWB; according to the real-time position of a detected target, a Kalman filtering algorithm (Kalman filtering algorithm) is adopted to carry out data fusion processing, so that real-time positioning of an observation target is realized. According to the algorithm, a positioning service area is divided into a high-precision positioning area, a common-precision positioning area and a connection area according to the positioning precision requirement, and UWB positioning anchor point equipment and BLE positioning anchor point equipment are arranged in different positioning areas at the same time. And an indoor fixed person navigation positioning model is formed by adopting UWB and BLE pedestrian navigation constraints for the connection area, so that the requirements of relatively high precision and relatively low cost are met.

A Bluetooth® ranging method includes: A response device establishes a Bluetooth® communication connection to a request device; the response device measures signal strength of a ranging request after receiving the ranging request, to obtain a first received signal strength indication RSSI; the response device obtains a first distance based on the first RSSI and a Bluetooth® ranging model, where the Bluetooth® ranging model is obtained through fitting based on a correspondence between a preset distance from the request device and a modified RSSI at the preset distance, and the modified RSSI is obtained by processing a plurality of RSSIs measured at a plurality of spatial positions when the request device broadcasts a Bluetooth® signal, and weights corresponding to the plurality of spatial positions; and the response device sends the first distance to the request device. A distance between devices can be accurately measured using the disclosed techniques.

The invention relates to the technical field of key generation and distribution, in particular to a multi-device automatic configuration encryption method and system based on Bluetooth. The method comprises the following steps: firstly, acquiring instruction information and attributes, RSSI values and historical pairing information of to-be-distributed network equipment, and providing a data basis for configuration; core equipment is screened through instruction and attribute matching and attribute similarity analysis, and equipment strongly related to user requirements is accurately positioned; historical pairing and RSSI value quantization equipment distance weights are fused, association conditions are analyzed, and a network structure is visually presented; analyzing the path length of the core equipment based on a graph structure, dividing closely associated target equipment groups, and determining the influence range of the core equipment; finally, the differentiated dynamic key is dynamically generated in combination with the equipment attribute, the distance weight and the instruction information in the group, the scheme effectively adapts to the dynamic change scene of the equipment through association analysis and dynamic adaptation, and the communication security and specificity are improved.

The invention belongs to the field of wireless audio transmission, and discloses a high-resolution lossless audio transmission device. The device comprises a core control board, a UWB module and a coding and decoding chip, and the core control board is connected with functional devices such as a user button, a reset button, a guide loading button, a programmer and a user LED and energy supply devices such as a Type-C connector and a power manager. An audio core is arranged in the UWB module and comprises a universal audio frame, a typical codec, a UWB wireless core and a UWB wireless interface, and the typical codec supports various coding and decoding modes such as ADPCM, FLAC and WAV. The device disclosed by the invention realizes high-resolution lossless audio transmission based on the UWB technology, the transmitted audio has high signal-to-noise ratio, low delay and high synchronism, the quality limitation of traditional Bluetooth and Wi-Fi in audio transmission is solved, and the device is suitable for a high-fidelity audio transmission scene.

The invention belongs to the technical field of medical treatment, and discloses a wearable intelligent method and device for monitoring the mental health of community old people, and the method comprises the steps: collecting the physiological indexes of the community old people in real time through an intelligent chest card, and achieving the dynamic collection of multi-dimensional data; data are transmitted to the cloud platform through Bluetooth or Wi-Fi, the equipment supports a data caching mechanism, and key data are temporarily stored when connection is abnormal; a dynamic evaluation model is constructed based on AI learning, and a multi-factor decision tree model and a natural language processing NLP algorithm are combined; a group psychological health trend and an environment risk thermodynamic diagram are presented in real time through a chest card APP, main factors influencing psychological health of the old are analyzed, and community managers are assisted in making an intervention plan. By making and applying the community old people mental health monitoring and early warning model, a unified mental health assessment system is provided for old people in different states, the applicability, universality and compliance of mental assessment are improved, home rehabilitation is achieved, and the overall medical cost is reduced.

The invention discloses a universal remote controller control method, which relates to the technical field of intelligent remote controller control, and comprises the following steps: starting a Bluetooth function through a mobile phone application program, and connecting target remote controller equipment to enter an application program main interface; a user sequentially selects the equipment information of the target equipment through the main interface; requesting a firmware package from a server according to the selected equipment information, and downloading the firmware package matched with the selected equipment; after the user confirms the firmware package, the application program pushes the firmware package to the remote controller through Bluetooth, firmware upgrading is carried out on the remote controller, and feedback information of upgrading success is returned; based on feedback information of successful upgrading, loading a control code library matched with the selected equipment from the server, and pushing a control code to the remote controller; according to the invention, the remote controller is used for verification and the control code library is stored, so that accurate control of different devices is realized, user experience is optimized, and the technical progress of the intelligent household device control mode is obviously promoted.

1. Name of the product in this design: Aromatherapy Humidifier Bluetooth Speaker (Jellyfish-Y20). 2. Purpose of this design: for playing audio, aromatherapy, and increasing indoor air humidity. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

A method for unlocking at least one vehicle door of a vehicle via a mobile terminal is provided, wherein the vehicle has at least one NFC antenna for receiving NFC signals and a vehicle Bluetooth module for communication via Bluetooth LE, and wherein the mobile terminal has a terminal Bluetooth module for communication via Bluetooth LE and an NFC chip. The at least one NFC antenna is configured to capture data from the NFC chip and then trigger the unlocking. Upon detection of entry of the terminal Bluetooth module into a triggering range of the vehicle Bluetooth module, which is determined at least by the range of a Bluetooth LE signal, this is signaled to the at least one NFC antenna. The at least one NFC antenna then changes from a first mode to a second mode, the first mode being distinguished by a shorter range for capturing the data from the NFC chip than the second mode.

The invention discloses an electronic equipment audio broadcasting adaptation system and method based on an Auracast technology, and relates to the technical field of audio broadcasting. An Auracast transceiver enters a receiving mode: detecting an input source and determining a sound source input mode, collecting an audio signal based on the input source, processing the audio signal and packaging the audio signal into a broadcast packet; the Auracast transceiver enters a transmitting mode: configuring broadcast parameters, and circularly sending a broadcast packet through a Bluetooth LEAudio protocol; and the Auracast transceiver sends the broadcast packet to all receiving ends supporting Auracast function reception in the broadcast coverage range of the Auracast transceiver. The method supports a one-to-many broadcast mode, and the transmitting end can transmit the audio streams to an infinite number of receiving devices at the same time without independently pairing each device. A receiving end can receive signals only by scanning and adding a broadcast group, and the method is suitable for scenes requiring large-scale equipment synchronization.

The invention discloses a Bluetooth + UWB + RTK fusion positioning method and system, and relates to the technical field of multi-source fusion positioning and intelligent security management and control, and the method comprises the steps: collecting feature data of an environment where a positioning object is located, and obtaining environment feature data; performing preprocessing to obtain preprocessed environment feature data; judging a space scene where the positioning object is located to obtain a space scene type; setting fusion strategy parameters; bluetooth ranging data, UWB positioning data, RTK positioning data and inertial navigation data are respectively collected according to the fusion strategy parameters; carrying out fusion calculation to obtain real-time three-dimensional high-precision positioning data; real-time three-dimensional high-precision positioning data is utilized to monitor the position and track of the power grid worker in real time, and occurrence of emergencies is detected. According to the method, the positioning precision, the track continuity and the anti-interference capability in a complex scene are improved, the abnormal condition detection efficiency and the alarm response speed of power grid workers are remarkably improved, and technical guarantee is provided for power grid safety production and personnel protection.

The invention relates to the technical field of wireless communication, in particular to a Bluetooth mesh-based riding helmet earphone multi-terminal talkback synchronization method and system, and the method comprises the steps: constructing a self-organizing network through a plurality of terminal nodes, carrying out the error detection of the self-organizing network, obtaining an error value, carrying out the time compensation of the terminal nodes, and obtaining a calibration terminal node, carrying out voice activity monitoring on the plurality of calibration terminal nodes to obtain a plurality of marked terminal nodes, carrying out time slot allocation on the plurality of ordered voice requests to obtain a plurality of voice frames with timestamps, carrying out multi-hop forwarding on the plurality of voice frames with timestamps to obtain a plurality of verification voice frames, carrying out timestamp sorting to obtain a plurality of sorted voice frames, and sending the sorted voice frames to a server; and performing synchronous error correction to obtain a plurality of synchronous voice frames, decoding and playing the plurality of synchronous voice frames to obtain a synchronous voice stream, and realizing multi-terminal synchronous talkback. According to the invention, the problems of difficult network establishment, asynchronous voice and speaking right conflict in the application of the riding helmet Bluetooth earphone can be solved.

The invention discloses an application method, system, equipment and medium of plant inspection navigation in a two-ticket intelligent management and control system based on AOA positioning, and belongs to the technical field of positioning navigation, and the application method comprises the following steps: setting a Bluetooth AOA transmitting base station and a Bluetooth AOA module positioning tag in an inspection area, carrying out signal interaction, and constructing an inspection space model; obtaining an interaction signal between the mobile Bluetooth transmitter and the Bluetooth AOA transmitting base station when an inspector carrying the mobile Bluetooth transmitter enters the inspection area, calculating the distance between the inspector and the Bluetooth AOA transmitting base station according to the signal intensity, and determining the real-time position of the inspector in the inspection space model; an inspection navigation route is generated according to the real-time position of the inspector, a preset inspection route and the work ticket information and the operation ticket information provided by the two-ticket intelligent management and control module; and when the inspector arrives at the inspection point and a preset card punching condition is satisfied, recording inspection card punching information and generating an inspection record. According to the invention, the inspection efficiency and safety are improved.

The invention relates to the technical field of remote control positioning, and discloses a Bluetooth voice remote control positioning method and system based on laser ranging, and the method comprises the steps: obtaining laser ranging data, Bluetooth positioning data, ambient light intensity and reference object data; performing reflection feature extraction according to the reference object data to obtain laser reflection features; inputting the laser ranging data and the laser reflection characteristics into a pre-trained laser correction model to obtain corrected laser data; performing stain analysis according to the reference object data to obtain surface stain data; carrying out weight distribution according to the surface stain data and the ambient light intensity to obtain a positioning weight; and performing weighted fusion according to the positioning weight, the corrected laser data and the Bluetooth positioning data to obtain a final positioning coordinate. The method has the advantages that the Bluetooth voice remote control positioning accuracy based on laser ranging can be improved.

The invention relates to the technical field of vehicle Bluetooth key control, and relates to a vehicle Bluetooth key permission allocation method for multi-device collaborative management. The method comprises the following steps: receiving a Bluetooth access request, analyzing a member role tag, matching the member role tag with a preset permission rule base after identity verification to generate an initial permission allocation instruction, combining a current system timestamp with a vehicle positioning position, and dynamically judging the space-time validity of the initial permission instruction by comparing a time window and calculating a space offset, so as to complete the permission allocation of the vehicle. After an instruction is valid, establishing a bidirectional encryption link, collecting time-space environment and operation state data in real time, substituting the data into a constructed demand permission collaborative analysis model to judge user demand permission, dynamically adjusting an initial instruction, monitoring user operation behavior data in real time, constructing a normal range threshold value by periodically analyzing historical operation data, and performing collaborative analysis on the normal range threshold value; and after comparison, abnormal data are judged, and the control authority is dynamically updated, so that full-process intelligent management and safety management and control of the vehicle Bluetooth key authority are realized.

The invention discloses a short-distance wireless audio multi-standard compatible communication protocol method, which comprises the following steps of: intelligent protocol selection: automatically selecting a most suitable wireless communication standard to carry out audio data transmission according to information such as communication capability, network environment, bandwidth requirement, signal strength, equipment type and current network load of audio equipment; the communication standard comprises but is not limited to Bluetooth, Wi-Fi, Zigbee, NFC and the like, and multi-protocol cooperative scheduling: under the condition that a plurality of protocols coexist, the load, the bandwidth use condition, the signal quality and the like of each protocol are monitored in real time. Through protocol intelligent selection and multi-protocol cooperative scheduling, the equipment can automatically select the most suitable communication standard according to the actual situation, the problem that different protocols are incompatible is solved, the interconnection and intercommunication between the equipment are improved, the low-delay processing technology is adopted, the data packet transmission sequence and the protocol conversion process are optimized, and the communication efficiency is improved. The audio data can be transmitted and played in real time, delay is reduced, and audio experience is improved.

The invention relates to a low-power-consumption Bluetooth adaptive communication method and device, communication equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: a master device receives Bluetooth channel data and determines quality detection results of a plurality of channels; according to a quality detection result, adaptively selecting a frequency hopping channel, and forming a frequency hopping channel mapping graph based on the selected frequency hopping channel; according to a quality detection result, adaptively adjusting a working mode or transmitting power of a physical layer; and synchronizing the adjusted frequency hopping channel mapping graph and the physical layer working mode, or the adjusted frequency hopping channel mapping graph and the transmitting power to the slave device. By adopting the method, the frequency hopping channel is adaptively selected, the interfered channel is dynamically eliminated, and the communication reliability and the anti-interference capability are improved; by adjusting the PHY mode or the transmission power, the communication performance and the energy efficiency ratio are optimized, and the overall channel quality and the channel resource utilization rate of the low-power-consumption Bluetooth can be improved.

The invention discloses a method and system for collaborative voice transfer between door locks, and the method comprises the steps: Bluetooth tag state monitoring and broadcast request: a door lock A detects that a Bluetooth tag (Tag-DID) carried by an owner a leaves a communication range, the exit state information of the tag is cached, and a broadcast result of the transfer request is obtained; matching and reminding a neighbor door lock Bluetooth tag: receiving a broadcast message according to the door lock Z, and sensing that the Tag-DID enters a communication range of the door lock Z, so as to obtain a reminding result of a person carrying the Bluetooth tag; switching authorization and connection establishment: obtaining a switching connection result between the door locks according to the answer button of the Bluetooth tag pressed by the owner a; voice data transfer and call management: according to the established voice channel, voice data are transmitted among the door lock Z, the door lock A and the mobile phone APP of the owner b in real time, and a complete process result of voice transfer is obtained. By utilizing the embodiment of the invention, seamless voice interconnection between the intelligent door locks can be realized, and the efficient communication requirement of a user in an intelligent home environment is met.

The invention discloses a method and equipment for offline storage of real-time sensing data based on a Flash ROM (Read Only Memory) in a single chip microcomputer, which are applied to the technical field of data processing.The method comprises the following steps: firstly, receiving carbon dioxide concentration, temperature, humidity and air pressure data by aiming at standardized processing, storage, indexing, time alignment and transmission of multi-parameter sensor data; generating a standard data packet according to the specification of 4-32 bytes, and combining a real-time timestamp with data interval information; on the basis of Flash ROM characteristics, data packets and auxiliary information are written in sequence by taking 64-512 bytes as a unit, and only a new sector is erased before being written in; extracting 12-24 bytes of core index information, circularly storing the core index information in an exclusive sector, and uniformly erasing the core index information when the core index information is fully written; a data address is positioned through an index, time recovery after interruption is achieved through timestamp nonvolatile storage, and data and time are accurately aligned; and finally, uploading the data to a mobile phone APP through Bluetooth, receiving an APP time synchronization RTC module, and completing whole-process data management and interaction.

The invention discloses a communication method for realizing a BMS protocol through Bluetooth, and the method comprises the following steps: S1, a connection establishment stage: 1) after a local device establishes a Bluetooth connection with a slave device, the local device constructs a request instruction for reading a version number according to a predefined BMS communication protocol; and 2) periodically issuing the request instruction to the slave equipment in a first preset period through the Bluetooth feature with the notification attribute. According to the method, the communication reliability is improved, the problems of instability and data packet loss of a Bluetooth channel are effectively solved through instruction issuing based on timing polling and a multi-level overtime disconnection mechanism, and it is ensured that instructions and data are reachable in a complex wireless environment; and on the basis of a BMS protocol framework, end-to-end CRC16 verification from'equipment address' to'data content 'is introduced in a data analysis link, damaged or tampered data frames in a transmission process can be accurately identified and discarded, and system processing errors or missing data are fundamentally avoided.

1. Name of the Design Product: Bluetooth Headset (AC-50, 80). 2. Use of the Design Product: For listening to music. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph Most Indicating the Design Key Points: 3D View of Design 1. 5. Design 1 is designated as the basic design.

The invention discloses a method and a system for controlling an eUICC to write an eSIM configuration file through Bluetooth, the method and the system are applied to interaction between a mobile terminal and an external Bluetooth SIM, and the method comprises the following steps: the mobile terminal is connected with an external Bluetooth SIM card through a BLE communication protocol; the external Bluetooth SIM card is inserted into a physical SIM card slot of any mobile device; the mobile terminal sends eSIM configuration file data or a downloading instruction to the Bluetooth SIM card; the Bluetooth SIM card converts the configuration file into an APDU instruction and writes the APDU instruction into a built-in eUICC chip; and the eUICC chip returns state information to the mobile terminal after completing configuration activation. According to the method, an eSIM configuration writing scheme which does not need operating system authority and can be deployed in a cross-platform mode is adopted, an eUICC chip is directly controlled through a central control MCU of an external Bluetooth SIM card module, Profile writing and activation are achieved, and the method supports use of Android, iOS and other Bluetooth devices.