442results about "Broadcast specific applications" patented technology

The invention provides an emergency broadcast intelligent triggering system based on multi-source seismic data fusion, and relates to the technical field of seismic monitoring and early warning, and the system comprises a data receiving module which is used for receiving multi-source seismic early warning information in real time, including seismic source parameter data, strong vibration observation data and real-time early warning parameters, and transmitting the multi-source seismic early warning information through a built-in communication protocol; and outputting the standardized multi-source seismic data. And the localization calculation module is used for carrying out real-time analysis on the standardized multi-source seismic data, extracting a P-wave initial parameter, a seismic motion acceleration predicted value and a seismic source fracture feature, carrying out dynamic calibration on an analysis result by combining actual measurement data of a built-in intensity meter, and outputting a multi-dimensional seismic data stream verified by the intensity meter. Through multi-source earthquake data fusion, real-time analysis and calibration, dynamic risk modeling and intelligent broadcast scheduling, generation and efficient propagation of earthquake early warning information are realized, emergency response timeliness and pertinence are improved, and earthquake disaster risks are reduced.

The invention discloses a vehicle-mounted broadcast module electromagnetic immunity testing method, system and device and a medium, and relates to the technical field of electromagnetic compatibility testing, and the method comprises the steps: obtaining a test standard parameter of a broadcast receiving module in a test vehicle; the broadcast receiving module comprises at least one modulation mode, and each modulation mode comprises a plurality of test frequency points; for each test frequency point, activating a broadcast receiving module through a broadcast test device according to the test standard parameters; controlling an electromagnetic interference generating device to emit electromagnetic waves to the test vehicle so as to generate electromagnetic interference on the test vehicle; according to the test standard parameters, controlling the broadcast test device to carry out electromagnetic immunity test on a broadcast receiving module of the test vehicle, and recording actual signal-to-noise ratio parameters of each test frequency point; and determining a test result of the broadcast receiving module according to the actual signal-to-noise ratio parameter and the standard signal-to-noise ratio parameter of each test frequency point. According to the scheme, electromagnetic immunity evaluation can be accurately carried out on the broadcast receiving module of the test vehicle.

The invention discloses an earthquake early warning device and method based on campus broadcast, and the method comprises the steps: carrying out the building response coupling analysis through receiving an early warning signal of an earthquake monitoring center, generating an earthquake magnitude-building coupling feature, and mapping the earthquake magnitude-building coupling feature into an enhanced early warning source adaptive to an acoustic environment; acoustic cavity detection is carried out based on threatened area identification, and differential playing topology is constructed; extracting a high-risk gathering area through personnel density scanning, generating personalized evacuation guiding content and determining a playing priority; high-precision time sequence control is realized by adopting a synchronous reference anchor point technology, and a multi-mode playing domain is constructed through carrier modulation and frequency division multiplexing; and finally, an acoustic navigation field is utilized to guide accurate scheduling and playing of audio signals, differential playing and accurate coverage of early warning information can be realized according to the anti-seismic characteristics and acoustic environment characteristics of different buildings, and an intelligent acoustic solution is provided for campus earthquake early warning.

The present disclosure provides a system and method of providing radio content to a vehicle. A system for providing radio content to a vehicle includes a vehicle communication system, a vehicle infotainment system, and a vehicle entertainment support server remote from the vehicle. A vehicle communication system includes a tuner unresponsive to a first radio transmission medium and configured to transmit a radio content request requesting radio content from an identified radio station (i.e., a desired radio station). The vehicle infotainment system is configured to obtain an input identifying a desired radio station broadcast in a first radio transmission medium and to transmit radio content from the desired radio station. The remote vehicle entertainment support server is configured to: receive radio content from a source, store the radio content in a selected temporary memory; obtaining a radio content request; and in response to the transmitting radio being the desired radio in the radio content request, transmitting the radio content in the selected temporary memory.

In aspects of automatic selection of audio broadcast based on direction, a media playback manager detects an available Bluetooth Low Energy (BLE) audio broadcast from a media device. Based on a location of a tag associated with the media device, the media playback manger determines a position of a wireless device relative to the media device. The media playback manager then receives the BLE audio broadcast at the wireless device based on the position of the wireless device relative to the location of the tag that is associated with the media device.

The invention provides a flood discharge early warning system and method based on multi-mode broadcast, and relates to the technical field of early warning systems. The system comprises a multi-mode broadcast module used for issuing early warning information through a wireless broadcast signal, an acousto-optic signal and a visual screen; the range adjusting module is used for adjusting the broadcasting range of the multi-mode broadcasting module according to the personnel distribution information in the target flood discharge area; the priority adjusting module is used for adjusting the broadcast priority of the multi-mode broadcast module; the positioning module is used for acquiring real-time position information of the target object through the communication base station and the intelligent terminal; the directional early warning module is used for determining an early warning information transmission path issued by the multi-mode broadcast module; the data acquisition module is used for acquiring various real-time data from the multi-mode broadcast module, the positioning module and the environment sensor; and the data fusion module is used for carrying out fusion processing on various real-time data. According to the technical scheme, the response efficiency and the coverage accuracy of flood discharge early warning can be improved.

The invention provides an emergency broadcast accurate sending method based on a 5G + security private network, which relates to the technical field of wireless communication, and is characterized in that after crowd density analysis is carried out on a monitoring video stream and the personnel intensity of each region is known, broadcast sub-regions are divided according to the personnel intensity, and a differential evacuation guide instruction is broadcasted. According to the sending method, the problems that the personnel distribution condition of each region cannot be accurately known, the uniformly played evacuation advertisement easily causes personnel congestion, and the indoor positioning signal is poor, so that a part of regions cannot receive the evacuation instruction can be solved, the safety is improved, and the casualty problem caused by the disordered personnel in the evacuation process is solved.

The invention relates to the technical field of field operation safety management, and discloses a field operation personnel safety assessment method based on network data acquisition and positioning, which comprises the following steps: dynamically selecting an anti-interference mode by a multimode positioning technology to obtain positioning data, correcting track offset caused by terrain reflection interference by combining a track prediction model, and calculating the safety of field operation personnel. A signal enhancement node is utilized to construct an ad hoc network to optimize data transmission, a safety evaluation model fused with a topographic slope trend is established for purified positioning data, parameters such as a speed threshold and a safety judgment threshold are dynamically adjusted by detecting surrounding obstacle distribution in real time, and when a safety state is abnormal, the positioning data are subjected to safety evaluation. And generating an optimal risk avoiding path based on the terrain trafficability network, and synchronously starting three-channel emergency broadcast of the cellular network, the wireless talkback and the node relay. According to the method, the complex terrain positioning precision and the anti-interference capability are improved, the data transmission reliability is enhanced, dynamic risk assessment and early warning are realized, and the emergency response efficiency and the rescue success rate are improved.

The invention provides a wireless emergency broadcast alarm terminal with a loudspeaker detection function and a detection method, and the terminal is characterized in that a loudspeaker is sequentially connected with a loudspeaker fault detection circuit, a single-chip microcomputer, a wireless transmitting and receiving circuit, an intrinsically safe circuit a and an antenna, so as to form a loudspeaker fault signal transmission line; the loudspeaker is sequentially connected with the loudspeaker fault detection circuit, the single-chip microcomputer and the loudspeaker fault display circuit to form a loudspeaker fault signal local display circuit. The noise monitoring sensor is sequentially connected with the background noise detection circuit, the single-chip microcomputer, the audio power amplifier circuit, the loudspeaker fault detection circuit and the loudspeaker to form an automatic loudspeaker volume adjusting circuit. The loudspeaker has the function of detecting the sound production open circuit or short circuit fault of the loudspeaker, and the output volume of the loudspeaker can automatically output the corresponding volume according to the noise of the installation position.

The invention relates to an intelligent emergency broadcast safe broadcast monitoring controller, which belongs to the technical field of emergency broadcast monitoring and comprises an emergency broadcast scheduling platform and a broadcast time plan management module. The emergency broadcast scheduling platform comprises a data acquisition module, a broadcast scheme monitoring and analysis module, a real-time audio stream monitoring and analysis module and an intelligent visual monitoring terminal management module, and the emergency broadcast scheduling platform is connected with a visual intelligent monitoring and control terminal. According to the intelligent emergency broadcast safe broadcast monitoring controller, broadcast task data, audio stream metadata of the IP broadcast microphone and equipment operation logs are integrated through the data acquisition module to carry out multi-dimensional dynamic monitoring on broadcast tasks, and if a certain broadcast task is triggered in an abnormal time period and the audio stream contains unauthorized content, the broadcast task is not triggered in the abnormal time period. The system can mark time violation and content abnormity at the same time and accurately position composite risks, so that the abnormity identification accuracy can be effectively improved, and the false report and missing report rate can be reduced.

A method for managing wireless device communications includes establishing active, persistent, and repetitive communications with a wireless device operating in a coverage area of a local wireless network. In an example, the local wireless network is an overlay to a portion of a macro wireless network. The repetitive communications include placing a call to the wireless device, completing a call connection to the wireless device, sending a message to the wireless device, receiving and processing a response to the message from the wireless device, and persistently repeating a call function of the placing a call, completing a connection, sending a response, and receiving and processing the response until a specified termination event. In an example, the termination event is a power off of the wireless device.

To deal with the issue in which delay of a system causes delay of display and the delay of display causes danger on viewers when emergency information sent when disasters occur is distributed in the same manner of transfer as the manner for transferring a picture sound content.SOLUTION: In the present invention, a picture sound distribution system formed of a distribution system for distributing a picture sound content and a reception terminal for receiving a picture content by a net distribution displays emergency information sent when disasters occur, with smaller delays than in the case of the picture sound content.SELECTED DRAWING: Figure 1

The invention discloses railway train dispatching four-wire access equipment and an implementation method. The device comprises a first network transformer, a second network transformer, an audio coding and decoding chip, a modular connector, a PHY chip and a processor chip. The equipment is connected with a plurality of 450M analog train dispatching station radio stations through four-wire interfaces, and is connected with a digital train dispatching communication system central server through an Ethernet interface, so that the traditional 450M analog train dispatching station radio stations can be accessed to a digital train dispatching communication system, and dispatching communication and network management monitoring of the digital train dispatching system and the 450M analog train dispatching station radio stations are realized; a technical means is provided for upgrading transition compatibility of a railway wireless train dispatching system, and the method has important significance for guaranteeing railway train operation safety and improving transportation operation efficiency.

According to the priority-based traffic broadcast switching method, device and equipment and the storage medium provided by the invention, by receiving and playing multiple paths of audio input signals and generating the emergency broadcast trigger signal when the rail transit operation state is abnormal, unified scheduling and control of multi-source audios are realized. Furthermore, according to the method, the emergency broadcast trigger signal is compared with the currently played audio signal through a priority judgment mechanism, and when the priority of the emergency broadcast trigger signal is higher, the low-priority audio is automatically interrupted and the emergency broadcast signal is preferentially played, so that the emergency information is ensured to be transmitted to the passenger at the first time, and the passenger safety is ensured. And delay or omission caused by other audio interferences can be avoided. The method provided by the invention not only improves the reliability and timeliness of emergency broadcast, but also realizes the dynamic management of the broadcast task through a priority mechanism, and gives consideration to the flexibility and practicability of the system while guaranteeing the safety.

A system, for providing radio content to a vehicle, includes a vehicle communication system, a vehicle infotainment system, and a vehicle entertainment support server remote from the vehicle. The vehicle communication system includes a tuner unresponsive to a first radio transmission medium and is configured to transmit a radio content request requesting radio content from an identified radio station (i.e., a desired radio station). The vehicle infotainment system configured to obtain an input identifying the desired radio station broadcasting in the first radio transmission medium and emit radio content from the desired radio station. The vehicle entertainment support server remote is configured to: receive radio content from a source, store the radio content in a selected staging memory; obtain the radio content request; and transmit the radio content in the selected staging memory in response to the transmitting radio station being the desired radio station in radio content request.

The invention relates to the technical field of building safety monitoring, in particular to a building construction safety monitoring system with automatic detection and danger early warning functions. Comprising a multi-dimensional data automatic acquisition unit; a dynamic risk analysis unit; a grading danger early warning unit; and an emergency linkage control unit. According to the invention, through the construction stage identification module, the weight dynamic adjustment module and the risk quantification and feature matching module, the current construction stage is determined based on the excavation depth of the foundation pit, the installation elevation of the steel structural member and the total height of the building; the weight ratio of each physical parameter is dynamically adjusted by combining the basic weight matrix and the mechanical influence factor matrix of the corresponding construction stage, then the comprehensive risk value is calculated through the single-parameter deviation degree and the deviation acceleration, the hidden danger type is matched, and the risk analysis key point can be adjusted according to the structural mechanical characteristics of different construction stages. The problems of lack of dynamic adaptation capability and limited risk assessment precision in the prior art are solved.

The present application discloses an emergency broadcast receiving method, device, chip, system, medium and product. The method includes: when an emergency broadcast audio signal is received through a medium wave channel, converting the emergency broadcast audio signal into a digital signal, the emergency broadcast audio signal includes audio data of emergency broadcast instructions and audio data of broadcast content; decoding the digital signal and identifying the emergency broadcast instruction; converting the audio data corresponding to the broadcast content in the digital signal into a first analog audio signal, and playing the first analog audio signal according to the emergency broadcast instruction. The above technical solution receives the emergency broadcast audio signal through the medium wave channel and converts it into a digital signal, identifies the emergency broadcast instruction by processing the digital signal and obtains the analog audio signal to be played, thereby realizing the reception of the emergency broadcast audio signal based on the medium wave and the corresponding processing of the analog signal of the emergency broadcast.

The invention provides an intelligent education central control system and a control method thereof. The intelligent education central control system comprises a campus broadcasting system, a plurality of education central control hosts and a centralized control platform, the education central control hosts are arranged in each lesson room in a campus, and each education central control host is in communication connection with the campus broadcast system and the centralized control platform and is used for selectively playing the teaching content or the broadcast information according to the authority and / or priority of the teaching content and the broadcast information; the campus broadcast system is used for sending broadcast information to the education central control host; and the centralized control platform is used for performing centralized management on the education central control host according to the course arrangement information or the teaching plan of the classroom. The education central control host is used as the tail end of the campus broadcasting system to link the education central control system and the broadcasting system, and the centralized control platform is arranged to perform unified management on all the education central control systems in the campus, so that the management efficiency of intelligent education central control is improved, teaching broadcasting contents and broadcasting contents are broadcasted in combination with classroom course arrangement conditions, and the management efficiency of intelligent education central control is improved. And the situation that the teaching process is interrupted by invalid information is reduced.

To easily and quickly confirm the state of distributed facilities.SOLUTION: The system 100 includes a moving body 5 and equipment 3 arranged in a distributed manner in a target area A. The equipment 3 has a detection part 35 for detecting the state of the equipment 3, and a first communication part 36 for transmitting state information on the state of the equipment 3 detected by the detection part 35 by radio communication. Further, the moving body 5 includes a second communication unit 57 that receives the state information transmitted from the facility 3 by wireless communication when the moving body 5 moves to the vicinity of the facility 3 and reaches the vicinity of the facility 3.SELECTED DRAWING: Figure 3

The invention discloses an emergency broadcast decision-making method for dynamically reconstructing a broadcast list, which is characterized by comprising the following steps of: 1, monitoring running state parameters of a broadcast link in real time, the running state parameters comprising a signal quality parameter, a network link parameter, a server resource parameter and an audio stream content parameter; 2, when it is monitored that the operation state parameters are abnormal, fault diagnosis is carried out based on a preset knowledge base, and the knowledge base stores the mapping relation between fault features and disposal plans; step 3, generating a broadcast list reconstruction strategy according to the diagnosis result and a multi-dimensional characteristic factor of the current broadcast program, wherein the multi-dimensional characteristic factor at least comprises a program type, an importance level and a switching smoothness requirement; and step 4, executing automatic switching of the emergency audio streams according to the playlist reconstruction strategy. According to the invention, the problems of untimely emergency response, inaccurate decision, discontinuous fault handling and the like in a complex broadcast environment can be solved, the broadcast content can be quickly and dynamically reconstructed, and the broadcast continuity and the service quality are ensured.

A method for controlling a radio apparatus for a vehicle, includes: determining of scanning determining whether to scan alternative broadcasts based on a signal quality of a listening broadcast; scanning the alternative broadcasts; determining of noise determining noise types of the alternative broadcasts based on a plurality of polarizations; comparing and determining comparing signal qualities of the listening broadcast and the alternative broadcasts based on a determination result of the determining of noise and determining whether to switch the listening broadcast to one of the alternative broadcasts; and switching the listening broadcast to the alternative broadcast based on a determination result of the comparing and determining.

The invention relates to the technical field of information acquisition, in particular to a fire-fighting emergency broadcast data information acquisition system which comprises the following steps: performing sound source positioning analysis on original data to obtain sound source distribution data; performing sound propagation loss estimation according to the sound source movement track data to obtain sound propagation loss data; emergency broadcast coverage demand period reference simulation evaluation is carried out according to the sound propagation loss data to obtain period reference data; and according to a strategy gradient algorithm, an emergency broadcast putting strategy adjustment model is constructed through the environment correction data, and the emergency broadcast putting strategy adjustment model is sent to a fire-fighting command cloud platform so as to execute fire-fighting emergency broadcast data information acquisition and analysis. According to the method, the attenuation degree of the broadcast signals under different environment conditions can be analyzed through estimation of the sound propagation loss, data support can be provided for the actual broadcast propagation effect, the broadcast signals can be optimally delivered according to the environment conditions, and therefore effective transmission of the signals is ensured.

A sound receiving / broadcasting system according to the present invention includes a master device and a plurality of slave sound receiving / broadcasting devices. The master device wirelessly communicates with each slave sound receiving / broadcasting devices. Upon receiving a first audio input signal, the master device transmits a first transmission signal to each of the slave sound receiving / broadcasting devices, and all of the slave sound receiving / broadcasting devices separately output first output sounds according to the received first transmission signals. One of the slave sound receiving / broadcasting devices, upon receiving a second input sound and generating a second audio input signal, transmits a second transmission signal to the master device, and the master device transmits a third transmission signal to each of the slave sound receiving / broadcasting devices according the received second transmission signal, and all of the slave sound receiving / broadcasting devices separately output corresponding second output sounds according to the received third transmission signal.

The invention relates to a monitoring node, a monitoring system, terminal equipment and a service system. The monitoring node comprises a thermal imaging camera, a processor and a wireless module. The thermal imaging camera is arranged within the monitoring area at a first predetermined height from the ground, and the optical axis is substantially perpendicular to the ground to thermally image a corresponding imaging area on the ground. And the processor analyzes the thermal image to obtain an analysis result. The wireless module transmits the analysis results, and / or thermal images, using a wireless technology. The invention is mainly applied to indoor spaces of buildings, and can also be applied to internal spaces of large equipment such as trains, ships, airplanes and the like. According to the invention, accurate identification, analysis and positioning of the object target in the field in the monitoring area can be realized at the single node end, and the analysis result and / or the thermal image can be sent (such as broadcast) to the receiving terminal with the wireless receiving capability in the monitoring area, so that accurate active and passive positioning functions can be provided for the object target. And / or other related uses may be supported.

To provide a technique for more preferably transmitting or receiving an advanced digital broadcasting service.SOLUTION: In a display control method in a broadcast receiving device that can receive a broadcast wave that are simulcast between a 4K broadcast service and a 2K broadcast service via a broadcast transmission line, the 4K broadcast service included in the broadcast wave is received, demodulated, a broadcast program of the 4K broadcast service is displayed, the 2K broadcast service which is a simulcast of the 4K broadcast service is received and demodulated when emergency broadcast information is received while a broadcast program of the 4K broadcast service is being displayed, the display screen of the broadcast receiving device is forcibly switched from the display of the broadcast program of the 4K broadcast service to the display of the screen of an emergency broadcast transmitted by the 2K broadcast service.SELECTED DRAWING: Figure 1

The utility model relates to the technical field of emergency broadcasting, and specifically discloses an emergency broadcasting terminal supporting remote controllable medium wave amplitude modulation, including an AM receiving module, an audio ADC / DAC module, an FPGA module, a main control MCU, an audio mixing and amplifying module, an amplifier module, and a loudspeaker; the main control MCU is respectively connected to the AM receiving module, the audio ADC / DAC module, the FPGA module, the audio mixing and amplifying module, and the amplifier module, the AM receiving module is connected to the audio ADC / DAC module, the audio ADC / DAC module is connected to the FPGA module, the audio mixing and amplifying module is respectively connected to the audio ADC / DAC module, the main control MCU, and the amplifier module, and the amplifier module is connected to the loudspeaker. The utility model transmits sound and control signals in the form of IP network broadcasting and medium wave amplitude modulation broadcasting, and finally realizes the transmission of important sound information to users, so as to achieve the purpose of daily broadcasting and emergency warning.

Methods, systems, and devices for wireless communications are described. A user equipment (UE), such as a narrowband internet of things (NB-IoT) UE, may determine whether a cell supports PWS notification and may respond accordingly. The UE may establish a wireless connection with a network entity associated with a cell. Then, the UE may receive, from the network entity via the wireless connection, a first message that indicates whether PWS notification is supported by the cell. The first message may be a master information block (MIB). The MIB may indicate that one or more PWS messages are scheduled. Additionally, or alternatively, the first message may be a first system information block (SIB). The UE may perform one or more operations to establish a connection with a cell that supports PWS notification.

The utility model discloses an emergency broadcast alarm device for a digital conversation ship, which comprises a protective shell and a loudspeaker, the right end of the top of the inner cavity of the protective shell is movably connected with a rotating shaft through a bearing, the middle end of the rotating shaft is fixedly provided with a second synchronizing wheel, and the bottom of the rotating shaft is fixedly connected with a protective cover. The outer surface of the protective cover is movably connected to the right end of the inner cavity of the protective shell. According to the utility model, through the arrangement of the loudspeaker, sailors can conveniently play the alarm information of the emergency broadcast when the digital communication ship encounters an emergency situation, so that surrounding sailors can timely discover the emergency situation and take corresponding safety measures; through the arrangement of a driving motor, a rotating rod, a first synchronous wheel, a fixing frame, a synchronous belt, a second synchronous wheel, a rotating shaft, a protective cover and a protective shell, the loudspeaker can be effectively stored and protected in the non-use period, and the probability that the loudspeaker is damaged due to the influence of the external environment is effectively reduced.

One example discloses a digital radio signal receiver comprising: wherein the receiver is configured to be coupled to a device; wherein the device is coupled to receive an RF signal; wherein the RF signal comprises a desired signal and interference; wherein the receiver is configured to receive a first signal and an interference model from a turn-off device training stage; an on-device training stage configured to construct a second signal and interference model based on the first signal and interference model and the RF signal received by the device; and a decoder configured to generate a data set from the RF signal based on the second signal and an interference model.

This invention belongs to the field of intelligent maritime surveillance technology, specifically a smart waterway monitoring and management system based on light beacons. It synchronously acquires multi-source heterogeneous information about vessels through integrated light beacon equipment, performs spatiotemporal registration and target association processing on this information, generates dynamic vessel trajectories, and extracts static attributes, motion behavior characteristics, visual activity characteristics, and environmental interaction characteristics. Utilizing a multi-evidence chain collaborative decision-making mechanism, it accurately identifies four fundamentally different vessel states: normal anchoring, illegal anchoring, active navigation, and uncontrolled dragging of anchor. This achieves a leap from state perception to behavioral cognition, significantly improving the accuracy of vessel anchoring identification and its robustness in complex scenarios. Based on the identification results, it triggers differentiated alarm strategies matching the state, generating handling instructions with reasons for the state determination, thereby greatly optimizing the allocation of surveillance resources and improving emergency response efficiency.