49 results about "Wireless broadcasting" patented technology

The invention relates to a wireless broadcast connection system and method and a method for automatically configuring an emergency alarm area. The system comprises a wireless broadcast receiving device and an intelligent terminal, the wireless broadcast receiving device is configured to be used for receiving broadcast signals and wirelessly transmitting broadcast audio streams to the intelligent terminal, and the wireless broadcast receiving device comprises a broadcast receiving processing unit, a wireless communication module and a digital signal processing unit. The digital signal processing unit is connected with the broadcast receiving and processing unit and the wireless communication module, and is used for encoding the digital audio signal into an audio stream in a compressed format and carrying out transmission buffer management on the audio stream; wherein the digital signal processing unit is provided with a self-adaptive transmission control module, and the self-adaptive transmission control module has a bidirectional communication capability and is used for receiving a playing buffer area state feedback signal from the intelligent terminal and dynamically adjusting the transmission rate of sending the compressed audio stream to the intelligent terminal according to the feedback signal; therefore, synchronous control of buffer areas of a sending end and a receiving end is realized.

Aspects of the present disclosure are directed toward apparatuses, systems, and methods that include at least one medical device having a device transceiver configured to wirelessly broadcast a device signal including at least unique identifier data and an information system is configured to maintain an active list of medical device inventory associated with a particular emergency response vehicle, and the processor is configured to automatically determine presence of the at least one medical device.

The utility model discloses a wireless broadcast interphone with GPS positioning and a system thereof. The wireless broadcast interphone comprises a wireless broadcast transmitting unit, a bidirectional wireless communication module, a GPS receiving unit, a position data transmission module, a battery and power management unit and a central control system. The wireless broadcast transmitting unit broadcasts audio information through radio waves, the two-way wireless communication module achieves real-time voice communication between devices, the GPS receiving unit obtains device position information and transmits the device position information to the central control system, and the central control system receives and processes the position information and voice feedback and sends broadcast information and instructions according to requirements. The battery and the power management unit provide power support and have a battery electric quantity monitoring function. The system can be widely applied to scenes of large-scale activities, emergency command, security management and the like, has the advantages of wide coverage range, accurate positioning, stable communication, intelligent battery management and the like, can effectively improve command and communication efficiency, and ensures reliable operation of the system in a complex environment.

To make elevator announcements easy to hear while suppressing noise pollution. [Solution] An elevator system according to one embodiment comprises an elevator control system, a wireless announcement device installed in at least one of the elevator car or landing and capable of transmitting wireless signals containing audio data related to elevator announcements to the surroundings, a wireless signal transmitting device capable of transmitting wireless signals containing landing information to the surroundings, a mobile terminal for users of the elevator car, on which an application is installed that allows setting information related to the settings of the wireless announcement device to be set for each user, and a cloud server that is communicatively connected to the elevator control system and the mobile terminal. The user is equipped with an audio device that can receive wireless signals transmitted from the wireless announcement device and reproduce the audio data contained in the wireless signals.

This invention discloses an emergency power dispatching method and system based on wireless communication, relating to the field of charging management technology. The invention stores demand beacons, power supply capacity beacons, and wireless coverage status in a database. Even after a network outage or other disaster, demand contracts can still be generated and committed bids received. This ensures unique order dispatch after conflict resolution. The dispatch token carries a one-time handover code and power level restrictions to prevent fraudulent claims, duplicate deliveries, and overload. Power suppliers transmit their status en route and calculate risks to trigger reordering, reducing the probability of delayed power outages. Communication nodes are prioritized based on coverage strength and remaining power supply time, restoring coverage first and then improving overall dispatch reachability, thereby improving uninterrupted power supply for critical loads and resource utilization.

Method for detecting one or more properties of an object (11) within a motor vehicle (10), the method comprising: Determining one or more of the location, orientation, size, and type of the object (11) within the vehicle (10) using one or more sensors (42, 44, 46, 48, 50, 56, 58, 60, 62, 64, 66, 68, 70), each of the one or more sensors (42, 44, 46, 48, 50, 56, 58, 60, 62, 64, 66, 68, 70) being located inside an interior of the vehicle (10) or on an exterior of the vehicle (10); and Assess whether the object (11) is arranged in a given, cautionable arrangement, characterized by the fact that the procedure also includes: Detect whether a vehicle impact event has occurred; when a vehicle impact event is detected, wireless broadcasting of the specific location, orientation, size and / or type of the object (11); Determining an extended injury severity prediction based on the location, orientation, size and / or object type of the object (11) being broadcast; and Sending the extended injury severity prediction to one or more first responders.

The invention belongs to the technical field of wireless digital broadcast communication security, and relates to an Auracast broadcast privacy protection system supporting key distribution and access control, which comprises a channel establishment and authentication module for establishing an out-of-band security control channel; the precursor key issuing module is used for issuing a static session precursor key to the target receiving equipment and the broadcast source equipment through channel encryption; the session key generation module is used for deriving a slice session key in combination with the public synchronization factor and the precursor key; the data packaging and sending module is used for encrypting the audio by using the slice session key, assembling a data frame and sending the data frame; the local key synthesis module is used for extracting a synchronization factor and locally synthesizing a slice session key; the audio stream analysis and output module is used for decrypting the data and managing a key life cycle; and the secret key life cycle management module is used for monitoring the state through a channel and executing erasing. According to the invention, the problem of realizing low-delay dynamic encryption and instant permission revocation without relying on periodic key redistribution in wireless broadcasting is solved.

The embodiment of the invention provides a communication configuration method of an intelligent terminal and a related device, and relates to the technical field of communication. Acquiring an NFC label signal of the intelligent terminal; if the communication type is point-to-point wireless communication, configuration information is sent to the intelligent terminal, so that the intelligent terminal carries out point-to-point wireless broadcasting, and a scanning instruction is sent to the vehicle machine system, so that the vehicle machine system establishes communication connection with the intelligent terminal and carries out communication configuration under the condition that the point-to-point wireless broadcasting of the intelligent terminal is scanned; if the communication type is network access communication, configuration information is sent to the intelligent terminal, equipment scanning is carried out, under the condition that point-to-point wireless broadcast of the intelligent terminal is scanned, communication connection with the intelligent terminal is established, and network access information corresponding to the vehicle machine system is sent to the intelligent terminal; therefore, the intelligent terminal establishes communication connection with the vehicle machine system based on the network access information and performs communication configuration, user operation is simplified, and automatic communication configuration of the intelligent device is realized.

A toy or educational system includes a plurality of wireless elements and a group token. A first one of the wireless elements includes a wireless transmitter and a second one of the wireless elements includes a wireless receiver. Each of the first wireless element and the second wireless element further comprises a reader adapted to obtain group configuration data stored on the group token. The first wireless element, upon obtaining group configuration data from the group token, is configured to set a corresponding group identifier as a common group identifier. The second wireless element, after obtaining the group configuration data from the group token, is configured to set a group identifier of the second wireless element as a common group identifier and select a received data message containing the common group identifier. Thereby, the first wireless element and the second wireless element are grouped into a broadcast group.

A method of providing channel content in a broadcast content reception and distribution system includes: receiving, by a broadcast content reception device, information that identifies a channel that provides channel content, from a content player device; receiving, by the broadcast content reception device, a signal that transmits the channel content, from an antenna; receiving, by the broadcast content reception device, information that indicates a signal strength corresponding to the channel based on the signal that transmits the channel content received from the antenna; determining, by the broadcast content reception device, that the signal strength is less than or equal to a threshold value based on the information that indicates the signal strength; and transmitting, by the broadcast content reception device, a message to the content player device in response to the determining that the signal strength is less than or equal to the threshold value.

The invention discloses a wireless broadcast upgrading device and method. A master node slices firmware and then continuously broadcasts the firmware, slave nodes receive the firmware in parallel and locally reconstruct the firmware, and breakpoint resume, grouping upgrading, digital signature and version rollback are supported. According to the method, the upgrade time is shortened to a second level from a minute level of a traditional point-to-point mode while extremely low air port occupation is kept, and the method can be widely applied to scenes such as intelligent sound equipment needing large-scale, high-reliability and rapid upgrade. According to the invention, serial upgrading is changed into parallel upgrading in a wireless broadcast mode, so that the time cost of upgrading is reduced, the upgrading efficiency is improved, and the fault tolerance is improved. The problems of time cost, low efficiency and low fault tolerance of serial upgrading are solved.

The application discloses an audio-optical broadcasting alternate working system and method of a wireless fire alarm system, relates to wireless control technology of a fire alarm, and solves the technical problem that a wireless audio-optical module and a wireless broadcasting module cannot completely receive control instructions synchronously, leading to the fact that the wireless audio-optical module and the wireless broadcasting module cannot work according to predetermined control. The application forms a network by a wireless controller and a wireless audio-optical module and a wireless broadcasting module. The wireless controller is used for sending a data packet with a system timestamp. The data packet includes a wake-up message or a control instruction. The wireless audio-optical module performs clock calibration according to the wake-up message, so that the wireless audio-optical module and the wireless broadcasting module are clock-synchronized. The wireless audio-optical module and the wireless broadcasting module realize synchronous control according to the control instruction. Thus, the whole system is in a synchronous control state, the mode of synchronous starting and alternate working is realized, and the above problem is solved.

The present invention relates to a wireless broadcasting system and, more particularly, to a wireless broadcasting system which performs broadcasting through wireless communication using a low-power frequency in an ISM band that does not require separate authorization, is capable of performing broadcasting not only using main broadcasting equipment in a broadcasting room but also using mobile broadcasting equipment at any location where a wireless integrated transceiver is installed, and is capable of being easily installed, expanded, and reconfigured. The wireless broadcasting system according to the present invention comprises: main broadcasting equipment; mobile broadcasting equipment; speakers installed in respective areas; and a wireless integrated transceiver capable of wireless transmission and reception with each other, for receiving a broadcasting signal wirelessly transmitted from the main broadcasting equipment or the mobile broadcasting equipment, and transmitting the broadcasting signal to the connected speakers for output.

The invention relates to the technical field of power system monitoring, and particularly discloses a wireless-based three-phase synchronous grounding fault indication sensor in a transformer substation, which comprises a master control sensing unit and at least two driven sensing units. The master control sensing unit and the driven sensing unit are mutually independent in physical structure, form a cooperative work system in a wireless communication mode, and are respectively used for being installed on a three-phase conductor of a transformer substation busbar. The master control sensing unit and the driven sensing unit are respectively provided with a current acquisition function module, a central processing function module, a wireless communication transceiving function module, a self-energy-taking function module, a power management function module and an opening and closing type installation mechanism function module. The technical effects of high-precision three-phase synchronous acquisition, long-term maintenance-free self power supply, reliable wireless data transmission and non-intrusive rapid deployment are achieved. Through a closed-loop time calibration mechanism based on local wireless broadcasting, time synchronization errors of all sensing units are ensured to be stably controlled within 1 microsecond.

The embodiment of the invention discloses a dynamic sliding window data frame association coding method and device, a dynamic sliding window data frame recovery method and device and electronic equipment, and the data frame recovery method comprises the following steps: reading corresponding data frames and association frames from L sub-cache regions in a receiving cache under the condition that a lost data frame exists currently, carrying out recovery operation on the lost data frame; wherein a data frame corresponding to the broadcast time slot and a corresponding association frame are stored in each sub-cache region, the association frame is obtained by performing association coding on at least two of K data frames including the data frame before the data frame by the wireless broadcast sending end, and K is a coding association length.

To achieve automatic setting of communication between controllers.SOLUTION: A primary controller 1 broadcasts a first packet including floor information, an identifier of a radio communication line and monitoring object area information by radio communication, assigns an address when a transmission source address of a second packet from a secondary controller 2 is not set, and transmits by radio a third packet in which the assigned address is set as a transmission destination address. The secondary controller 2 identifies the identifier of the wireless communication line to be used by the secondary controller 2 based on the floor information and the position information of the secondary controller 2, the identifier stored in the first packet, and the monitoring target area information, wirelessly transmits the second packet including the identifier to the primary controller 1 that is the transmission source of the first packet, and sets the transmission destination address stored in the third packet as the address of the secondary controller 2.SELECTED DRAWING: Figure 1

This utility model relates to the field of audio equipment technology, specifically to a digital ceiling speaker with noise detection. It includes a circular housing with a frame at the opening. A first-layer metal base plate is fixed inside the frame, and an excitation oscillator is mounted on its front. A second layer of metal isolation plates and a top-layer metal isolation plate are sequentially arranged on the back of the first-layer metal base plate. A power module and a digital power amplifier module are mounted on the back of the first-layer metal base plate. A decoder module, a wireless broadcasting module, and a noise detection module are mounted on the second-layer metal isolation plates. An audio constant-voltage output transformer is mounted on the top-layer metal isolation plate. This design integrates noise detection, digital signal processing, and constant-voltage output functions, making it particularly suitable for network digital broadcasting systems in public places such as subways and airports. Its core feature is the ability to achieve adaptive adjustment of environmental noise and expansion of network broadcasting signals through a layered modular design.

The invention provides an automobile external display communication system, and relates to the field of automobile accessories, and the system comprises a data collection module which is used for collecting multi-source heterogeneous data through an in-vehicle network and a physical perception way; the data processing module is connected to the data acquisition module and is configured to be used for operating a data fusion algorithm, performing cleaning fusion processing on the acquired multi-source heterogeneous data and generating visual display data; the external display module is connected to the data processing module and is used for performing external visual display on the visual display data through a display device arranged on a vehicle window, a vehicle body or a vehicle roof; and the communication module is connected to the data processing module and is used for sending the visual display data to an external receiving device through the Internet of Vehicles or a wireless broadcast mode. The method is used for overcoming the defects that in the prior art, warning information priority is high, the real-time response requirement is high, and warning polling or sudden traffic congestion retransmission of an in-vehicle network application layer is prone to mistaken events, and in the other aspect, a mode of communication between vehicle external display and other vehicle cameras is used for forming a vehicle-to-vehicle communication mode with low cost. The invention discloses a semantic communication system for vehicles and roads without worries of network attacks.

The invention relates to the technical field of photovoltaic distributed energy storage, and provides a photovoltaic separable battery pack mounting and testing method and device. The method comprises the following steps: respectively issuing corresponding wireless broadcast instructions to equipment in a plant assembly stage and a field installation stage through a gateway or a platform; the equipment enters a broadcast monitoring state after being powered on, receives the wireless broadcast instruction, and executes a test of a corresponding stage according to the wireless broadcast instruction; after the equipment completes the test, generating a structured test report and uploading the test report to the platform through a wireless network; and the platform judges the current state of the equipment according to the test report and provides visual feedback for technicians. The problem that a traditional testing method highly depends on manual operation and is poor in practicability is solved.

The invention provides a self-powered equipment fault detection device based on a piezoelectric energy harvesting resonance characteristic, and the device comprises a piezoelectric energy harvesting unit which is used for converting the vibration of detected equipment into a piezoelectric signal; the self-powered piezoelectric circuit is used for converting the piezoelectric signal into a power supply signal; the detection control circuit is used for keeping or lowering the power supply signal through a first control signal output end and outputting a normal state signal or an abnormal state signal through a second control signal output end; and the state broadcast circuit is jointly controlled by the self-powered piezoelectric circuit and the detection control circuit, and sends a wireless broadcast signal when the state of the detected equipment is normal, otherwise, does not send the wireless broadcast signal. According to the self-powered equipment fault detection device provided by the invention, the judgment of the state of the detected equipment and the sending of the judgment result can be realized without any external power supply and sensor.

The application discloses a narrow-band low-orbit navigation enhancement terminal OTA performance test system, which comprises a simulation control and test evaluation unit, a through guide simulation time sequence control unit, a narrow-band navigation signal simulation source, a narrow-band communication signal simulation source and a far-field darkroom. The narrow-band low-orbit navigation enhancement terminal OTA performance test system generates a through guide test scene, communication simulation parameters and navigation simulation parameters through the simulation control and test evaluation unit, and calculates and generates output time sequence control parameters through the through guide simulation time sequence control unit, realizes seamless switching and wireless broadcasting of communication signals and navigation signals, solves the problem that there is a difference between wireless broadcasting of satellite navigation signals and satellite communication signals in the existing low-orbit narrow-band through guide enhancement OTA performance test method and a real environment, leads to an incomplete test result, overcomes the limitation of a traditional wired input test mode, and improves the practicability and market adaptability of the test system.

A method for providing an unlock signal to a locked device, the method comprising: transmitting, by a user device operating in a wireless advertising mode, an advertising packet containing data requesting an unlock of a locked device; receiving, by the user device operating in a wireless scanning mode, an advertising packet containing an unlock challenge request from the locked device; obtaining, by the user device and from an unlock certification entity, a signed unlock message; and transmitting, by the user device operating in the wireless advertising mode, an advertising packet containing data comprising the signed unlock message.

The application provides a relay node distributed selection method in a multi-hop wireless network under a TDMA system, which comprises the following steps: in the multi-hop wireless network under the TDMA system, network initialization and topology acquisition are carried out; each node in the network updates the two-hop range neighbor information maintained by itself, and selects a relay node in the node based on the configured relay node selection rule; in the i time slot of the nth round period, the relay node numbered i broadcasts the state information of itself to all neighbors. In the distributed relay selection process, each node only needs to exchange limited state information with its neighbors, which significantly reduces the network resources required for information interaction, effectively avoids selecting redundant relays, reduces the additional network resource consumption introduced by the relay, and the selection strategy has a conflict resolution and information consistency processing mechanism, which can correct in time when the neighbor state information is inconsistent, and make efficient decisions in combination with the two-hop neighbor state information.

The invention discloses a vehicle motor control method and device, a storage medium and a vehicle. The method comprises the steps that the current running state of vehicle-mounted audio receiving equipment is determined; and under the condition that the vehicle-mounted audio receiving equipment is in the running state of outputting the wireless broadcast audio, a vehicle motor is driven to work in a driving mode of continuously outputting driving signals. The running state of the vehicle-mounted audio receiving equipment is detected in real time, and when the vehicle-mounted receiving equipment is recognized to be in a working state, the driving mode of a vehicle motor is automatically switched into a continuous output (full-voltage output) driving mode, so that a high electromagnetic interference signal generated by the action of a high-frequency switch is fundamentally eliminated, and intelligent avoidance of an interference source is realized; the same-frequency interference on the wireless broadcast signal is completely eliminated, and the suppression effect on the interference of the wireless broadcast signal is effectively improved. In addition, the method does not need to change or add any hardware circuit, the method is completely realized through an embedded software module, and the overall cost is remarkably reduced.

This application provides a dual-mode wireless broadcast obstacle warning system and method. It includes: an optical warning module for placement at the obstacle and outputting aviation warning flashing light signals; a data acquisition module for automatically acquiring the obstacle's position, altitude, and current time data; a configuration module for setting obstacle type information, influence range information, and occupancy time information; a data processing module for generating a structured signal containing obstacle identification and status information, and performing spatial encoding processing on the influence range information; a wireless broadcasting module for periodically broadcasting the structured signal; a receiver module for decoding, extracting data, and verifying the structured signal to obtain obstacle analysis results; and a post-processing module for generating visual display data, flight path planning data, or conflict resolution data. This application can improve the integrity of obstacle warnings, increase the efficiency of airspace information utilization, and reduce the risk of low-altitude flight collisions.

The application discloses a terminal and household appliance connection method, which comprises the following steps: receiving a wireless broadcast signal of a household appliance; if the wireless broadcast signal contains preset information, displaying an available device list; the available device list comprises device information of all household appliances which are currently allowed to establish a wireless connection with a terminal; marking device information of a target household appliance in the available device list of the terminal, so that the device information of the target household appliance is displayed in a manner different from other device information in the available device list; wherein the preset information is sent by the household appliance in response to a preset trigger operation, and the target household appliance is the household appliance which sends the preset information. The application also discloses a terminal, a household appliance and a computer readable storage medium. The application aims to enable a user to accurately identify a household appliance which needs to be connected to a terminal, and improve the efficiency of wireless connection between the terminal and the household appliance required by the user.

A wireless access point (AP) receives a certificate from an application executing on a computing device that has not connected to the wireless AP, wherein the certificate does not include a password to a service set identifier (SSID) that is broadcast by the wireless AP. The wireless AP determines that the certificate is associated with an entity that is an authorized entity. In response to determining, that the certificate is associated with the entity that is the authorized entity, the wireless AP establishes a time-limited connection with the computing device.

1. Name of the product in this design: Signal Detector. 2. Purpose of this design: As an instrument for detecting the strength of wireless broadcasting signals. 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.

Broadcast positioning systems supporting location services through over-the-air broadcast television (TV) signals are disclosed. The broadcast positioning system supports a broadcast TV signal format that includes a transmission time of the broadcast TV. The transmission time of the broadcast TV signal is used by a TV signal receiver to determine the propagation delay of the broadcast TV signal between the TV signal transmitter and the TV signal receiver. The TV signal receiver is also configured to receive multiple broadcast TV signals from multiple TV broadcasters, wherein the same delay of arrival for those broadcast TV signals can be determined. In this manner, the TV signal receiver can use the determined multiple delays of arrival from the multiple received broadcast TV signals as time-of-arrival (TOA) and the known locations of the antenna radiating these multiple broadcast TV signals to perform a trilateration or multilateration calculation to determine its position.

The utility model discloses a vehicle-mounted emergency communication device, a vehicle auxiliary instrument desk assembly and a vehicle, the vehicle-mounted emergency communication device comprises a function control panel and a plurality of function control modules, the function control panel is arranged on an auxiliary instrument desk and comprises a display screen and function keys; the plurality of function control modules are integrated on the function part control panel, and the plurality of function control modules comprise an air conditioner control module and an analog signal radio module; the function key is reused for operation control of the air conditioner control module and the analog signal reception module, and the display screen is reused for operation parameter display of the air conditioner control module and the analog signal reception module. The analog signal reception module can receive emergency information of a wireless broadcast station in an emergency. The air conditioner control module and the analog signal reception module are both hidden in the auxiliary instrument desk, and space utilization can be optimized. The air conditioner control module and the analog signal reception module share a display screen and function keys, so that the cost can be saved.