657 results about "Bluetooth communication" patented technology

The invention relates to the technical field of artificial intelligence, and discloses a Bluetooth communication intelligent speech translation method and system based on multi-mode enhancement, and the method comprises the steps: collecting a multi-channel audio signal through a built-in multi-microphone array of a Bluetooth device, carrying out the dynamic direction self-adaptive beam forming of the multi-channel audio signal, and carrying out the self-adaptive beam forming of the multi-channel audio signal; extracting a Mel spectrogram feature of the direction enhancement signal, identifying lip regions of a plurality of candidate speakers in each frame of real-time speaking video captured by a camera, performing time sequence convolution on the lip regions to obtain a lip movement time sequence embedded vector, calculating a correlation score with the Mel spectrogram feature, separating the direction enhancement signal, and obtaining a lip movement time sequence embedded vector; and performing text transcription and conversion on the high-confidence separation voice to obtain a translation language text, and sending the synthesized target translation voice to a preset mobile terminal through the Bluetooth device to obtain a target translation result. According to the method, the real-time performance and accuracy of speech translation are improved in a multi-person scene, far-field speech, noise interference and accent difference.

The invention relates to the technical field of Bluetooth communication, and discloses an optimization method for secure communication of Bluetooth chip equipment. The method comprises the following steps: identifying a device type identifier and a protocol version feature, extracting a hardware capability parameter and generating an initial security policy set; collecting channel data, and calculating a stability index and a dynamic noise baseline; then, screening and sorting security policies to generate an execution queue, adjusting an encryption strength threshold according to a noise baseline to perform iterative optimization, and outputting final policy configuration; and when the target Bluetooth chip establishes the communication connection, loading the final security policy configuration and monitoring the channel state in real time, and triggering a policy dynamic switching mechanism when the channel state change exceeds the preset tolerance so as to optimize the security communication effect of the Bluetooth chip equipment. According to the method, the security policy can be accurately matched with the device and the channel state, the policy is dynamically adjusted, and the security and the stability of communication of the Bluetooth chip device are effectively improved.

The invention provides a power distribution automation terminal security debugging method based on Bluetooth communication, and the method comprises the steps: extracting a historical operation record and a current task context from an operator identity identifier, calculating a real-time permission range of resource access, and adjusting an initial access boundary according to the real-time permission range; a security gateway module is embedded in a Bluetooth communication channel, a cross-domain data exchange request is intercepted and analyzed, whether the request exceeds the adjusted access boundary is judged, and if yes, transmission is refused; analyzing the cross-domain data exchange request, extracting a source domain identifier and a target domain identifier of a data packet from the cross-domain data exchange request, and encrypting the data packet to obtain encrypted cross-domain transmission data; and obtaining a decryption key distribution record of the encrypted cross-domain transmission data in the security domain of the receiving end, judging whether the key is matched or not, if so, decrypting the data and transmitting the data to the target domain, and otherwise, discarding the data.

Embodiments of the disclosure provide for improved Bluetooth communication security in vehicles. In the context of a method, the method includes obtaining, from a computing device, at least one feature of a communication specification for a vehicle, wherein: the communication specification defines data sharing protocols between a sensor or computing device aboard the vehicle and a vehicle management system to enable wireless communication by a Bluetooth communication mode without disabling means of the sensor, computing device, or vehicle management system for communication by a second mode. The method includes generating a vulnerability of the communication specification based on the at least one feature; determining a mitigation operation based on the vulnerability; and providing a recommendation comprising the mitigation operation to the at least one computing device to enable modification of the communication specification toward reducing the vulnerability.

The invention relates to the technical field of near-field communication security, in particular to a hardware-level identity authentication and end-to-end encryption near-field data interaction method and system for an electric red-connected terminal, and the method comprises the steps: a first electric red-connected terminal and a second electric red-connected terminal initiate pairing based on a Bluetooth secure connection pairing protocol, and negotiate to generate a long-term key through an ECDH algorithm; performing bidirectional identity verification by adopting an application layer authentication protocol; activating AES-CCM encryption by using a session key derived from a long-term key; bluetooth signal strength and a connection state are monitored in real time, and a negotiation key is automatically paired again when abnormity occurs; generating an interaction log, digitally signing the log by using a locally stored private key, and securely storing the signed log in a local secure storage area of the terminal; the digital signature of the latest log is verified, and if interaction abnormity is found, the local security module of the terminal recovers the local data to the pre-interaction state according to the last credible log record. The problem that traditional Bluetooth communication is prone to eavesdropping and tampering can be solved.

The invention provides a Bluetooth sensor control system and a Bluetooth sensor control method, and the system comprises a plurality of Bluetooth communication nodes, each Bluetooth communication node corresponds to a group of Bluetooth sensors, each Bluetooth communication node is used for receiving Euler angle data of each Bluetooth sensor in the group corresponding to the Bluetooth communication node, the Euler angle data is used for representing attitude data detected by the Bluetooth sensor aiming at a detected object; and the main control chip is used for connecting the plurality of Bluetooth communication nodes, receiving the Euler angle data from all the Bluetooth communication nodes, sorting and packaging the Euler angle data meeting a preset condition to obtain a data frame, sending the data frame to a terminal, and analyzing the attitude change of the measured object. According to the invention, the Bluetooth communication node is triggered by the main control chip to broadcast the synchronization instruction to the sensors, so that all the sensors collect data based on the same time reference, and time alignment during motion track reconstruction is ensured.

A wireless communication tape, dispenser of the same and methods of usage of the wireless tape and the dispenser in asset tracking applications are disclosed. The wireless communication tape can be manufactured in an ultrathin form factor by laminating a stack of layers to impart functionality to the wireless communication tape. Methods of use and operation of the wireless communication tape are disclosed to save battery resources of the communication tape. The wireless communication tape may be used to form shipping labels that are thermally printed in a thermal printer and that include a 5G and Bluetooth communication capability to track a location of a package. Examples of 5G wireless protocols include the LPWAN protocols of NB-IoT and LTE-M.

The application relates to the field of Bluetooth communication technology and discloses a wireless screen projection method and system integrating Bluetooth control and power supply management, which comprises the following steps: a sending end device adds a preset time delay to a Bluetooth data packet response according to an energy state of the sending end device; a receiving end device decodes the energy state by measuring the difference between a round-trip response time and a reference value, and performs screen projection strategy adjustment and negotiation in cooperation when a condition is met. The application encodes the energy state into a Bluetooth communication timing sequence, realizes endogenous perception and adaptive adjustment of a power supply state of a screen projection system, fundamentally solves the screen projection interruption problem caused by energy state disconnection in a traditional scheme, ensures smooth and non-perceptual picture quality switching through a bidirectional negotiation mechanism, and significantly improves the reliability and user experience of wireless screen projection.

The invention discloses a kinematics monitoring method for rehabilitation after hip replacement, and relates to the technical field of kinematics monitoring. Comprising the following steps that monitoring elements are arranged, IMU sensor groups are arranged at hip joints and thighs, and a power module, a processor and a Bluetooth communication module are worn on a human body; data acquisition: the IMU sensor group acquires vector data of hip joints and thighs and transmits the vector data to the processor, the processor transmits the data to the PC terminal through the Bluetooth communication module, the PC terminal calculates a quadruple of hip bone angles and a quadruple of leg bone angles at the same time, then subtracts the quadruple of hip bone angles and the quadruple of leg bone angles to obtain a quadruple of relative included angles, and calibrates the quadruple of relative included angles; a plurality of standard poses in rehabilitation evaluation after hip replacement are selected as calibration references. A corresponding monitoring scheme is designed based on the multiple IMU sensors, a software and hardware system is formed, the hip joint angle of the patient is measured and calculated in real time, and a doctor is assisted in evaluating and guiding the postoperative rehabilitation exercise intensity of the patient.

The invention discloses a React Native-based cross-platform Bluetooth communication unified implementation method and system, and relates to the technical field of computers.The method comprises the steps that Bluetooth communication middleware is constructed, and a native Bluetooth interface is packaged; acquiring target equipment by adopting a multi-round scanning strategy of progressive increase timeout retry and combining with an equipment name keyword filtering and Map duplicate removal mechanism; dynamically negotiating an MTU value based on a device type, fragmenting long data according to MTU-13, and ensuring ordered transmission of the data through a sending queue, ACK confirmation and timeout retransmission; defining a standard data frame containing a prefix, a packet sequence, a data type, CRC (Cyclic Redundancy Check) verification and an ending identifier, and analyzing data through buffer area accumulation and integrity detection; the state management module is used for maintaining the equipment connection state and historical records, and automatic disconnection prompting, reconnection and UI navigation resetting are achieved; according to the invention, centralized Bluetooth connection, disconnection, reconnection and other functions can be processed, so that the stability of Bluetooth communication and the integrity of data are improved.

The invention relates to the technical field of signal transmission, in particular to a centralized meter reading method, an acquisition terminal and a fusion terminal. The method comprises the following steps: after establishing Bluetooth communication connection with a plurality of electric energy meters, dividing the plurality of electric energy meters into different communication quality groups based on a joint evaluation result obtained by measured Bluetooth signal strength and communication error rate of each electric energy meter, and configuring adaptive communication configuration parameters for each group; according to the communication configuration parameters, a differential broadcast strategy is adopted to synchronously send a meter reading instruction to each electric energy meter, and power utilization data is received in parallel; and in response to a polling request of the fusion terminal, sending the cached power consumption data to the fusion terminal. By jointly evaluating the Bluetooth signal strength and the communication error rate, dynamically configuring the communication configuration parameters and implementing the differentiated broadcast strategy, the concurrency and reliability of meter reading in a high-noise environment can be improved, the communication conflict and retransmission rate are effectively reduced, and the data acquisition efficiency and the overall stability of centralized meter reading are improved.

The embodiment of the invention discloses a video processing method and device, electronic equipment and a computer readable storage medium, and relates to the technical field of video processing. The method is applied to the electronic equipment, the electronic equipment adopts a dual-chip heterogeneous architecture composed of an MCU and an SoC, the MCU is used for processing a Bluetooth communication task, and the SoC adopts an on-demand wake-up mechanism. The method comprises the steps that a camera based on SoC management collects a plurality of video frames of a video stream; extracting structured semantic information of the plurality of video frames based on the SoC; the SoC packages the structured semantic information into a data packet and transmits the data packet to the MCU; and the MCU fragments the data packet into a plurality of data blocks, and sends the data blocks to a receiver through Bluetooth, so that the receiver performs semantic understanding on the video stream according to the received data blocks. According to the scheme, complete video semantic information can be efficiently transmitted through Bluetooth with low power consumption.

The invention discloses a single-board ski shoe fixer with a power supply system, and belongs to the field of skiing sports equipment. Most existing single-board ski shoe fixers are of mechanical structures, lack electronic functions, cannot supply power and are insufficient in protection performance. The ski shoe fixer comprises a ski shoe fixer body, a control circuit board, a battery, a brass elastic sheet contact, a capacitance touch switch, a charging interface module, a silica gel sealing plug and the like. A GPS positioning module, a Bluetooth communication module and a sound-light alarm device are integrated on the control circuit board, speed and track data can be obtained in real time and transmitted to a terminal through power supply of a battery, and positioning and alarming are achieved when a user is in danger or the snowboard is lost; the battery supplies power to the snowboard electronic device through the brass elastic sheet contact, so that equipment dispersion is reduced, and charging is simplified; the capacitive touch switch, the resin pouring sealant and other protective structures effectively prevent water and mistaken touch, it is ensured that an electronic system reliably operates in the low-temperature humid environment, and the safety, convenience and stability of skiing are remarkably improved.

Embodiments of this application are applied to the communication field, and provide a communication method and an electronic device. In a scenario in which operating frequency bands of Wi-Fi communication and Bluetooth communication overlap, an electronic device may obtain a first communication indicator threshold after determining that the electronic device meets a first preset condition, and then compare a latest communication indicator obtained in real time with the first communication indicator threshold, to determine whether the latest communication indicator meets a second preset condition. When the latest communication indicator meets the second preset condition, the electronic device may perform Wi-Fi communication through a first antenna and perform Bluetooth communication through a second antenna. In this way, interference between the Wi-Fi communication and the Bluetooth communication can be reduced, and good transmission performance can be maintained. This not only improves system flexibility, but also improves communication quality of the electronic device.

Embodiments of the present application provide a Bluetooth communication system, a back connection method, a Bluetooth device, a storage medium and a chip, and relate to the technical field of communication. The system comprises a first Bluetooth device and a second Bluetooth device which have been paired. The first Bluetooth device is configured to send indication information through Bluetooth low energy (BLE) and send a paging message through classic Bluetooth. The indication information is used to instruct the second Bluetooth device to increase the scan duty cycle of the classic Bluetooth, and the paging message is used to request to back connect the second Bluetooth device. The second Bluetooth device is configured to scan through BLE and scan through classic Bluetooth at a first duty cycle. After scanning the indication information through BLE, the classic Bluetooth is controlled to scan at a second duty cycle, and the second duty cycle is greater than the first duty cycle. After scanning the paging message through classic Bluetooth, the first Bluetooth connection is established with the first Bluetooth device. The technical solution provided by the present application can improve the Bluetooth back connection speed and has good user experience.

A hearing aid, comprising a microphone configured to produce a microphone output signal representing sounds transduced by the microphone; an earphone speaker configured to convert an equalized output electrical signal into acoustic waves; a Bluetooth wireless transceiver; and an automated processor configured to spot a plurality of different keywords; and selectively control a Bluetooth communication partner dependent on the spotted keyword.

The invention particularly relates to a data center switch management system based on Bluetooth, and relates to the technical field of data transmission. A protocol conversion and adaptation module; an equipment management and Mesh relay module; a data processing and channel optimization module; and a user interaction and cloud collaboration module. According to the method, the error rate and the attenuation extreme difference rate are synthesized, the extreme boundary is defined, the k value and the u value are optimized in combination with scene adaptation and time attenuation, the channel real problem is accurately captured, and accidental interference is filtered; if the low-interference scene of the core machine room reserves more real extreme values, and the high-interference scene of the edge machine room filters accidental noise, so that the evaluation result fits the reality; in the aspect of channel optimization, a standby channel library is constructed, time slots are dynamically allocated, an optimal path is pre-calculated, faults such as blockage of a cabinet ventilation plate can be pre-judged through historical data, a work order is generated, signal stability is guaranteed in the whole process from evaluation to optimization, and the attenuation influence is reduced.

To facilitate use of a recording device mounted with Bluetooth by a plurality of portable terminals.SOLUTION: A terminal capable of Bluetooth communication is provided. The terminal includes an interface capable of performing Bluetooth communication and a control unit. The control unit establishes a connection with a recording device capable of Bluetooth communication by the interface, communicates with the recording device by the interface unit via the connection, and releases the connection with the recording device after completion of transmission of recording data to the recording device.SELECTED DRAWING: Figure 9

The present invention relates to the field of wireless audio streaming. The invention can be used to manage dynamically the configuration of a link between a Bluetooth audio source and a Bluetooth audio sink, or between a master and slave device. The invention relates to method for operating a Bluetooth device, the method comprising: transporting audio information over a Bluetooth communication link established with a second device; determining, upon a change of value of an operational parameter in either the Bluetooth device or the second device, a new operating mode for said Bluetooth communication link; modifying a configuration parameter of said Bluetooth communication link based on the new operating mode; transporting audio information on said Bluetooth communication link according to the modified configuration parameter.

A system for intelligent monitoring of the cold chain and predictive environmental regulation; the system includes: a microcontroller configured with integrated Wi-Fi and Bluetooth communication protocols, the microcontroller serving as the central processing unit for acquiring, processing and transmitting sensor data; a plurality of sensors operationally coupled to the microcontroller, wherein the plurality of sensors includes at least one digital temperature sensor, at least one humidity sensor, at least one vibration sensor, at least one GPS module and at least one door access sensor, each of these sensors providing corresponding real-time data streams; a wireless communication subsystem comprising a GSM module operationally connected to the microcontroller, wherein the subsystem transmits encrypted sensor data to a cloud computing platform; a thermoelectric cooling unit comprising a Peltier element mechanically coupled to a heat sink and fan assembly, wherein the cooling unit is electrically coupled to a relay module controlled by the microcontroller to dynamically regulate the internal environment; and a cloud-based analytics engine that runs a Long Short-Term Memory (LSTM) model trained on historical sensor data, with the model predicting environmental anomalies before limit violations and transmitting predictive alerts via a dashboard to the microcontroller and authorized remote users.

A communication system, method, and device for a miniature intelligent sensor. The communication system includes a sensor, a power gateway, and a power Internet of things (IoT) server. The sensor is configured to obtain sensor data and send the sensor data to the power gateway according to a Bluetooth communication protocol. The power gateway is configured to receive the sensor data and perform protocol conversion on the sensor data to obtain protocol conversion data adapted to a message queuing telemetry transport (MQTT) protocol. The power gateway is configured to send the protocol conversion data to the power IoT server according to the MQTT protocol. The power IoT server is configured to receive the protocol conversion data and obtain server receiving data of the power IoT server according to the protocol conversion data.

The invention discloses an emergency method and system based on door lock Bluetooth collaboration, and the method comprises the steps: detecting a floor network fault according to a monitoring result of a robot dog on a door lock multicast communication state, triggering the robot dog to carry out autonomous task distribution or platform scheduling distribution, and determining a floor which each robot dog is responsible for; according to the event that the robot dog arrives at the designated floor, Bluetooth communication links are sequentially established between the adjacent door locks according to a preset evacuation path, and relay alarm message transmission between the door locks is achieved through the IP forwarding function of the robot dog; according to the relay alarm message transmitted by the door lock in the Bluetooth link, each door lock whistles and alarms according to a planned time point, and synchronously reports personnel statistical information; and according to the door lock fault condition detected by the robot dog, the emergency pointing link is updated in a dominant skipping or autonomous identification mode. According to the embodiment of the invention, the intelligent level and rescue efficiency of building emergency response can be improved.

The invention discloses a BMS Bluetooth secure communication method and system based on SM2 key agreement, and the method comprises the following steps: constructing a BMS Bluetooth secure communication architecture composed of a battery analog front end (AFE), a low-power-consumption Bluetooth SOC and a secure coprocessor, and writing an SM2 static private key and a device ID in a secure storage unit; after a user terminal initiates a BLE connection request, a security coprocessor sends a wake-up instruction and generates a temporary SM2 private key dT, and then point multiplication operation is executed to generate a temporary public key PT; and sending to a user terminal through a BLE link, performing format analysis and elliptic curve equation verification, executing an SM2 key agreement protocol after confirming that the information is legal, calculating to obtain a shared key material Z, performing re-verification, and if the verification is effective, establishing an AES encryption communication link, monitoring abnormity, clearing sensitive information and performing whole-process closed-loop management on the dynamic session key K. According to the invention, the security and reliability of BMS Bluetooth communication can be improved.

The invention relates to the technical field of communication, in particular to a multi-protocol applet Bluetooth communication system, terminal equipment and a storage medium, and the system comprises a basic Bluetooth interface module, a unified link management module, a protocol adaptation module and a third-party extension module; the basic Bluetooth interface module is used for carrying out scanning, connection and data read-write operation on Bluetooth equipment; the unified link management module is used for receiving communication data from the basic Bluetooth interface module; the protocol adaptation module is used for analyzing communication data from the unified link management module; and the third-party extension module is used for accessing a third-party SDK through a standard interface so as to dynamically load third-party SDK data, and sending the third-party SDK data to the protocol adaptation module for third-party protocol registration. And through modular packaging, developers can perform third-party function development more easily.

The invention discloses an electric tricycle controller intelligent parameter adjusting system and method based on Bluetooth, and the system is characterized in that the system comprises a mobile terminal which employs a smart phone to install an intelligent parameter adjusting APP, and comprises a parameter input and interaction module, a controller compatibility pre-detection module, a Bluetooth communication module A, and a data processing module; the vehicle-mounted controller serves as a core execution unit and comprises a hardware information storage and analysis module, an intelligent parameter adjustment module, a Bluetooth communication module B and a multi-dimensional safety control module, the communication stability is improved in a breakthrough mode, the communication error rate is reduced to 0.1% or below from 5%-8% in the prior art through the BLE 5.1 frequency hopping technology and XOR dual verification, the communication distance is increased to 15 meters, and the communication efficiency is improved. And no attenuation is caused when penetrating through a metal vehicle body.

A Bluetooth communication method implemented between first and second electronic devices, including establishing a communication in a connected mode between the first and second devices including a key exchange operation between these two devices, and establishing a communication in an advertising mode between the first and second devices including a periodic broadcast by the second device to the first device of a message including a payload and a calculated tag from this key.

The invention discloses a method and system for monitoring the charging state of a charging pile, and relates to the technical field of intelligent berth managers, and the method comprises the steps: carrying out the recognition and monitoring of the charging behavior of a vehicle at a berth; acquiring charging state information; the charging state information is transmitted in an external response mode through the low-power-consumption Bluetooth communication module, and the charging state of the charging pile is monitored. According to the invention, under the condition of not transforming the existing charging pile and not depending on a manufacturer interface or a background platform, key behaviors such as whether the vehicle on the parking space inserts the gun, whether the vehicle is actually charged and whether the vehicle does not run away after being charged can be accurately identified; the system supports parking space management strategies such as accurate timing, differential billing, alarm prompt and scheduling control, is high in compatibility, flexible in deployment and low in power consumption, solves the problem of supervision blind areas caused by charging pile protocol closing and system isolation, and improves the use efficiency and intelligent management level of the special parking space of the charging pile.

The invention, which relates to the technical field of the medical care information equipment, discloses an infusion inspection Bluetooth prompter comprising a Bluetooth prompter module, a PDA terminal module, an information interaction module and an intelligent prompting module. The Bluetooth prompter module is made of a medical-grade material, is provided with a shell with an adjustable buckle, is internally provided with a power supply component which is used for Bluetooth communication, unique identification, state indication and wireless charging, and is used for being mounted on an infusion tube and communicating with an external device PDA (Personal Digital Assistant). Personal information of a patient, information of a medicine being infused and unique identification information of the corresponding Bluetooth prompter module are accurately associated and bound through the information interaction module, a one-to-one corresponding relation is formed and is properly stored, and the situation that in the complex environment that multiple persons are infused at the same time, the infusion efficiency is greatly improved is effectively avoided. Nursing errors caused by untimely inspection of nursing infusion and infusion pumps, leakage of infusion inspection and simultaneous operation of various kinds of infusion or infusion pumps due to information confusion are avoided.

This invention belongs to the field of wireless communication technology and provides a Bluetooth-based information synchronization method, a computer-readable storage medium, and an electronic device. The method includes: when a message to be published exists, generating a message identifier corresponding to each message to be published according to a predetermined algorithm based on the device attribute information of the device and the content of the message to be published; recording the message to be published and its corresponding message identifier in a message dictionary; broadcasting the selected message identifier via Bluetooth; establishing a Bluetooth connection with another device; receiving a message request containing the message identifier; and sending the message to be published corresponding to the message identifier in the message dictionary to the other device. Since each message to be sent and the attribute information of the Bluetooth device are combined to generate a uniquely identifiable message identifier, the message identifier enables information synchronization between different devices via Bluetooth communication.

The application provides a Bluetooth communication system, a Bluetooth connection method, an electronic device and a storage medium, and relates to the technical field of communication. When two electronic devices need to establish a Bluetooth connection, it can be determined whether the versions of the two electronic devices are consistent, and it is further determined whether the Bluetooth connection parameters need to be exchanged: if the versions are consistent, the Bluetooth connection parameters commonly owned by the two devices are directly obtained from the local device to establish the Bluetooth connection without exchanging the Bluetooth connection parameters. If the information of the opposite device is stored by the two devices, it can be determined whether the information of the opposite device is changed, the changed information is exchanged to establish the connection if the information of the opposite device is changed, and the stored information of the opposite device is directly called to establish the connection without exchanging the information if the information of the opposite device is not changed. In this way, the information negotiation and exchange process in the Bluetooth connection process is simplified, and the Bluetooth connection speed is improved.