4152 results about "Bluetooth" patented technology

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 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.

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 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 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.

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.

The invention discloses an indoor positioning method based on a Bluetooth RSSI (Received Signal Strength Indicator), which comprises the following steps: after a positioning tag receives RSSI data broadcasted by Bluetooth beacons, screening the beacon with the strongest signal and calculating the distance; current data is directly adopted in first positioning, and translation processing is performed in combination with historical positions in non-first positioning so as to smooth a result. And mapping the position points to path points through a road network matching algorithm, preliminarily positioning the path points based on shortest path planning, and outputting a final positioning result through a filtering rule. According to the invention, the problem of positioning fluttering caused by fluttering of the Bluetooth RSSI signal, the problem of back-and-forth jumping of actual positioning caused by instability of the Bluetooth RSSI signal and the problem of signal abnormity caused by signal interference caused by metal, a wall body or a human body are effectively solved.

1. Name of the product in this design: Bluetooth headset (DH10). 2. Purpose of this design: To answer phone calls and play music via Bluetooth signal. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

1. The name of this design product: Bluetooth Speaker (X10). 2. Purpose of this design product: playing sound. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The invention relates to the technical field of security and protection equipment, and discloses a portable multi-mode intelligent alarm terminal based on Beidou positioning, which comprises a Beidou third-generation positioning module, a multi-mode communication module, a dual-mode power supply system, a physical key assembly, a central processing unit and a sensor array, the Beidou third-generation positioning module supports BDS / GPS / GLONASS multimode fusion positioning, the positioning precision is less than or equal to 1m (in an outdoor enhancement mode), and the multimode communication module integrates 4G / 5G data communication, Beidou short message transmission and Bluetooth LE near field communication functions. According to the invention, through Beidou third-generation / GPS / GLONASS multimode fusion positioning, the Kalman filtering algorithm and the signal-to-noise ratio dynamic weighting technology are combined, and the outdoor positioning precision of less than or equal to 1m is realized. When a satellite signal is shielded, an inertial navigation mode is automatically switched to, a trajectory is corrected by utilizing data of a triaxial accelerometer, and an accumulative error is controlled within 5m / min. Through actual measurement, the positioning success rate in the urban canyon environment reaches 98% and is improved by 40% compared with that of a traditional single-mode GPS terminal, and it is ensured that rescue force quickly and accurately arrives at the site.

The present invention discloses an intelligent lighting control system for a parking lot, which belongs to the field of intelligent lighting technology and includes: an acquisition and processing module for collecting real-time data of the parking lot environment and performing preprocessing; an automatic control module for intelligently controlling parking lot lighting, which enables local sensing and linkage between AI lamps through Bluetooth Mesh networking technology, so that the group can respond synchronously; a remote control module for adding an intelligent gateway to access the Internet to remotely control the parking lot. The present invention solves the existing problems of being unable to automatically adjust the brightness and lighting range of parking lot lighting according to factors such as ambient light and human activities, and being unable to remotely control the parking lot, resulting in low parking lot management efficiency and energy conservation and environmental protection levels. The present invention can automatically adjust the brightness and lighting range of parking lot lighting according to factors such as ambient light and human activities, achieve a two-way balance between energy conservation and user experience, and can remotely control the parking lot, which can improve management efficiency and energy conservation and environmental protection levels.

1. Name of the product in this design: Bluetooth speaker CD player (X12). 2. Application of this design: Primarily used in Bluetooth speakers and CD players. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

1. Name of the product of this design: Humidifier Bluetooth Speaker (Aromatherapy Raindrop Little Red Riding Hood‑ Y21). 2. Purpose of this product: used for playing audio, aromatherapy and increasing indoor air humidity. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

1. The name of the design product: Bluetooth headset (DH16). 2. The use of the design product: through the Bluetooth signal to listen to the phone, play music. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

1. Name of the product in this design: Bluetooth connector. 2. Purpose of this design: for signal transmission. 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.

1. The name of the design product: Bluetooth headset (L62-2). 2. The use of the design product: The design product is suitable for listening to music of smart phone, MP3, MP4, iPad, tablet computer, notebook computer, etc. When applied to smart phone, it can also realize the call of the phone. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

Disclosed are a positioning method, a gateway, and a positioning device. The positioning method comprises: receiving, by means of a Bluetooth gateway, a data packet sent by a terminal device and comprising target position information, and position information of a Bluetooth node closest to the terminal device; determining the closest Bluetooth node according to the position information of the closest Bluetooth node; receiving, by the closest Bluetooth node, a data packet sent by the terminal device and comprising CTE information; obtaining current position information of the terminal device according to the CTE information; and when the current position information of the terminal device is inconsistent with the target position information, obtaining, according to the current position information of the terminal device and the target position information, position information of a next Bluetooth node closest to the terminal device and navigation information, and sending the navigation information to the terminal device.

1. The name of the product under this design: Bluetooth Speaker (B20). 2. Purpose of this design product: Bluetooth speaker for playing audio. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention relates to the technical field of sound box equipment, in particular to an intelligent regulation and control method and system for a Bluetooth sound box and the Bluetooth sound box, and the method comprises the steps: judging whether audio delay meets the requirement or not; in response to the situation that the playing state does not meet the requirement, storing the duration and the transmission parameter into a fault data set; training a probability model; predicting the probability that the playing state in the next period does not meet the requirement and the duration; in response to the probability greater than a preset probability, adjusting the cache depth according to the duration, and in response to the probability less than or equal to the preset probability, obtaining a human voice ratio in the audio file; and adjusting the gain or cache depth of the medium-high frequency part in the audio according to the human voice ratio. A multi-task probability model is trained by using the strong relevance of historical transmission parameters and delay faults, and the delay exceeding risk and duration of the next period are predicted, so that graded accurate regulation and control based on prediction results are realized, and the operation stability of the Bluetooth sound box is improved.

The invention relates to the field of air conditioner diagnosis, in particular to a multi-protocol air conditioner diagnosis circuit. Comprising a main control chip, a Bluetooth module circuit, a power supply module circuit, a multi-protocol switching circuit, a home bus circuit and an I2C interface circuit, wherein the multi-protocol switching circuit comprises an interface circuit, a multi-way switch circuit and a change-over switch circuit; the home bus circuit comprises an optical isolation input circuit, a home bus chip circuit and a resistance-capacitance adaptive circuit; the I2C interface circuit is connected with the multi-way switch circuit; the power supply module circuit is connected with the main control chip; and the Bluetooth module circuit is connected with the main control chip. The method is high in compatibility, can diagnose air conditioners of most brands and models, is high in fault recognition accuracy, and improves the maintenance efficiency of the air conditioners. The circuit has a certain anti-interference capability. The air conditioner maintenance device has multiple connection modes such as wired connection and wireless connection, can be connected with multiple host devices such as a mobile phone and a computer, realizes long-distance air conditioner maintenance, and improves the working safety.