CN114245055A - Method and system for video call under emergency call condition - Google Patents
Method and system for video call under emergency call condition Download PDFInfo
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
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- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
- G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
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- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
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- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
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- H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
- H04M11/045—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems using recorded signals, e.g. speech
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Abstract
The invention relates to the field of emergency call communication, and discloses a video call method and a system used in an emergency call situation, wherein the method comprises the steps that a server center judges voice content information in voice call of a user, and when the requirements of alarm definition and continuity are not met; triggering data transmission channels of a server center and a user terminal, generating early warning prompt information according to the acquired video image information, and sending corresponding warning program demonstration information to the user terminal by the server center according to the matched early warning prompt information; specific emergency can be visually displayed in a visual mode, different authorities and information of the server are granted, and therefore the emergency can be rapidly processed and rescued.
Description
Technical Field
The invention relates to the field of emergency call rescue processing, in particular to a video call method and a video call system used in an emergency call situation.
Background
In the traditional emergency call situation, the emergency situation can be described only by a dictation mode, and in the emergency situation, people often have blank brains and can not clearly express the emergency situation, so that the rescue efficiency is delayed. The current dispatching system of the alarm receiving and processing center only supports a voice channel and does not support a digital channel, and under the scene of emergency call or dangerous condition, the response of people is slow or the signal reception is not good, and under the condition of tension, the information of the emergency response is fragmented, which is not beneficial to the quick processing of the dispatcher.
In the prior art, documents CN 109361756A and the like also disclose a cross-platform data transmission method based on 120 network alarm, but the scheme only switches and adjusts the video definition according to the state of the current network information, and the above scheme does not solve the problem of the representation of the integrity of alarm information under the crisis situation of people and is not intelligent enough at the same time. The technical scheme of the prior art mainly aims to enable the voice of the alarm to be clear through processing, but the problem that the alarm cannot clearly express the situation can not be solved, namely how to acquire more related data under more emergency situations so as to visually display the specific emergency situations in a triggering visualization mode and how to authorize different authorities and information of the service end, so that a dispatcher can rapidly process the emergency situations and rescue.
Disclosure of Invention
Therefore, the invention provides a video call method under the condition of emergency call, which comprises the following steps:
when the server center judges that the voice content information in the voice call of the user does not meet the requirements of the alarm definition and the alarm continuity; triggering a data transmission channel between the server center and the user terminal, remotely triggering the camera video authority of the user terminal equipment and triggering a video call;
the server center executes image feature matching according to information acquired by terminal shooting, the image feature information is compared and analyzed with original image feature information acquired by a user terminal, whether the image feature information is matched with information of an image model base of the server center or not is judged, and if yes, early warning prompt information is generated according to matched type information;
after the early warning prompt information is generated, the video image signal is transmitted to a risk factor evaluation module of a server center for risk evaluation so as to generate early warning level warning information; determining whether to execute a voice call and video call dual-network coexistence mode or not according to the early warning level alarm information;
the server center sends corresponding alarm program demonstration information to the user terminal according to the matched early warning prompt information; the alarm program demonstrates information, split screen display is performed on a display screen of the user terminal, a demonstration video interface and camera shooting data are matched in real time, and therefore a user is reminded to adjust the camera shooting position to obtain appropriate alarm information parameter information.
Further, the data transmission channels of the trigger server center and the user terminal are specifically: after the user alarm is connected, the access server center sends a short message to the user equipment, and the user equipment establishes data communication connection with the server center by clicking a webpage link in the short message; the server center is a medical server center or a public emergency service server center.
Further, in a state where a voice call of the server center is maintained through the voice call mode, a mode switching instruction of a video call mode is detected according to the user input, and when it is detected that the electronic device is switched to the video call mode, information in the video call mode with the server center is displayed on a user interface of the user device in a state where the voice call is maintained, the information in the video call mode at least including: displaying at least one piece of video display information associated with the operation of the additional function on the user interface, wherein the video display information and the alarm program demonstration information are displayed in regions.
Further, when the video call is performed, when the display interface of the user equipment displays the video picture as the main picture, the user can switch the picture in the video call mode to the display picture in the demonstration mode in a button clicking mode, and the user performs the input of voice or video signals according to the video demonstration information.
Further, the partition operation is to display a video call operation menu identifier on a display interface of the user equipment, pop up a video call operation menu according to an operation of clicking the video call operation menu identifier by a user, and prompt the user to obtain a mode switching instruction in a mode of selecting a mode switching operation in the video call operation menu.
Further, when the server center judges that the danger level is high, the server center triggers voice call transmission and video transmission to execute data transmission in a coexistence mode through different networks, wherein the networks comprise a first network and a second network; and simultaneously, acquiring the position information of the user to acquire the base station information of the peripheral cells.
Further, a signal intensity threshold is arranged in the server center or the user equipment, wherein different video image qualities corresponding to different signal thresholds are automatically switched to the corresponding video image quality when the signal intensity reaches a preset threshold, and the signal intensity is automatically switched to voice communication when the signal intensity does not reach the threshold of the video call.
Further, when there are two networks for voice communication and video call for information transmission, synchronous association is performed in the voice call and the video call by a timestamp in a voice data transmission packet.
Further, the first network is a WiFi network, the second network is a data transmission network, when it is determined that the signal strength of the first or second network is lower than the threshold, the user terminal locally caches the video or voice information, after the handover, in a process of transmitting the content associated with the call to the server center in response to the user operation, new content is obtained from the user side cache information, and after the call information corresponding to the new content is sent, the call associated with the new content is obtained; after the user terminal sends the cached content information and the switching network to the server center, the user terminal unifies the information related to the session content and then plays the information in a de-duplication mode according to the sequencing of the timestamps.
The system and the method of the invention comprise that the server center judges that the voice content information in the voice call of the user does not meet the requirements of the alarm definition and the continuity; triggering data transmission channels of a server center and a user terminal, generating early warning prompt information according to the acquired video image information, and sending corresponding warning program demonstration information to the user terminal by the server center according to the matched early warning prompt information; specific emergency can be visually displayed in a visual mode, different authorities and information of the server are granted, and therefore the emergency can be rapidly processed and rescued.
Drawings
The features and advantages of the present disclosure will be more clearly understood by reference to the accompanying drawings, which are illustrative and should not be construed as limiting the disclosure in any way.
FIG. 1 is a schematic diagram of an application system of the method of the present invention.
FIG. 2 is a schematic flow chart of the method of the present invention.
Detailed Description
These and other features and characteristics of the present disclosure, as well as the methods of operation and functions of the related elements of structure and the combination of parts and economies of manufacture, will be better understood by reference to the following description and drawings, which form a part of this specification. It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only and are not intended as a definition of the limits of the disclosure. It will be understood that the figures are not drawn to scale. Various block diagrams are used in this disclosure to illustrate various variations of embodiments according to the disclosure.
Example 1
As shown in fig. 1-2, the server center may include a control mode of a master server device and a slave server device, and a hot backup mode is used between the master server and the slave server device to ensure a fast response of emergency data. Optionally, the server center performs control allocation on traffic and access between the servers by using a balancing algorithm to improve the voice processing capability of the servers, and the server center is accessed to a voice processing system provided by a third-party service provider to provide correction for feature extraction of voice data. The server center can also trigger relay communication of adjacent autonomous emergency base stations according to the transmission quality of a network between the server center and a user and the judgment of the position information of the base stations, and trigger a plurality of adjacent autonomous emergency base stations to execute repeated coverage of a power area according to the acquired video danger emergency degree so as to ensure that the user can quickly access and completely access the alarm receiving information of the user during large-scale alarm disposal.
After the user alarm is connected, whether the voice information of the user meets the requirements of definition and continuity is judged through a server center in the platform, and detection and identification are carried out by adopting a cepstrum feature detection method according to the requirements of the definition and the continuity. When the server center judges that the voice content information in the voice call of the user does not meet the requirements of the alarm definition and the alarm continuity; triggering a data transmission channel between the server center and the user terminal, remotely triggering the camera video authority of the user terminal equipment and triggering a video call;
the server center may be a dispatch system of a reception and processing alarm center, and the user terminal device may be a mobile communication device or an intelligent wearable device of a user.
The establishment of the data channel can specifically send a short message to the mobile communication equipment of the user by the dispatching system of the alarm receiving and processing center after the alarm of the user is connected, the user clicks a webpage link in the short message, the digital communication connection can be established with the alarm receiving and processing center, and digital audio and video call and extraction and uploading of metadata of the mobile equipment of the user can be carried out.
Preferably, after the user alarm is connected, the dispatching system of the alarm receiving and processing center can push an https link to the mobile communication equipment of the user through the platform, the user can access the https link, namely, a digital communication connection can be established with the alarm receiving and processing center, and digital audio and video call and extraction and uploading of metadata of the mobile equipment of the user can be carried out.
And the server center executes image feature matching according to the information acquired by the terminal camera shooting, the image feature information is compared and analyzed with the original image feature information acquired by the user terminal, whether the image feature information is matched with the information of the image model library of the server center or not is judged, and if the image feature information is matched with the information of the image model library of the server center, early warning prompt information is generated according to the matched type information.
And after the early warning prompt information is generated, the signal is transmitted to a risk factor evaluation module of the server side for risk evaluation so as to generate early warning level warning information. Optionally, the early warning level alarm information is regenerated into an early warning signal, the early warning signal is fed back to a previous early warning system, namely a risk management evaluation module, and the prompt information is transmitted to the artificial intelligent early warning operation system.
And when the early warning level warning information is generated, sending corresponding warning program demonstration information to the user side according to the matched early warning prompt information. The comparison analysis is used for judging whether the image characteristic information is matched with the information of the image model library in the server center, namely, the image characteristic information is extracted to identify main key element information in the video, the key element information can be obtained through edge detection and the like, and different emergency treatment information and treatment types, such as indoor or outdoor and different flame type color identification, can be obtained through obtaining the key element information.
When a data communication channel is established, the data communication channel acquires the demonstration information of the alarm program according to the early warning prompt information and sends the demonstration information to the user terminal equipment. When the user clicks the demonstration button, the user equipment detects that the video call mode is switched to the demonstration mode; the user performs input of voice or video signals according to the video demonstration information to acquire basic information required by the alarm program.
Optionally, when the input of the video and voice signals is executed, the video telephone concurrently sends the voice call and the data transmission terminal, performs split screen processing on the interface of the video call, and performs real-time matching on the demonstration video interface and the camera shooting data so as to remind a user to adjust the camera shooting position to acquire proper demonstration information.
Optionally, the split-screen operation may be implemented by displaying a video call operation menu identifier on a display interface of the user equipment, popping up a video call operation menu according to an operation of clicking the video call operation menu identifier by a user, and prompting the user to obtain a mode switching instruction in a mode of selecting a mode switching operation in the video call operation menu, so as to control the split-area display of the video signal and the demonstration signal and the switching of the main and auxiliary screens.
Optionally, in a state of maintaining a voice call at a server end through a voice call mode, a mode switching instruction of a video call mode is detected according to the user input, when it is detected that the electronic device is switched to the video call mode, in the state of maintaining the voice call, information of all call modes with a server center is displayed through a user interface displayed on a display of the user device, and in the video call mode, at least one piece of video display information associated with additional function operation is displayed on the user interface, and the video display information performs a display in a divided region.
Optionally, the voice call and the image video are transmitted in parallel, the parallel transmission may be transmitted in one communication network or may be separately transmitted in different networks, when the server center determines that the risk level is high, the voice call transmission and the video transmission are triggered to perform concurrent data transmission through different networks according to the network bandwidth margin and the stability, and the networks include a WiFi network and a data transmission communication network. Generally, a wireless local area network provided by WiFi may be generated and maintained by an AP (Access Point). The terminal can switch the LTE/NR 5G network provided by the mobile base station a in the wireless access network to the wireless local area network provided by the WiFi hotspot B when the wireless signal strength value of the mobile base station a is small and the wireless signal strength value of the WiFi hotspot B is high.
Optionally, the server detects a communication signal of the user end, and when a Radio link failure (Radio link failure) of the base station is detected, the user end executes a Radio Resource Control (RRC) link reestablishment procedure (rrcconnectionrequest procedure), and at this time, network connection is performed using information about WiFi network access cache in the device, so that the user end reestablishes the link, and network switching is performed through communication protocol matching in the WiFi access network cache. When the network transmission is concurrent, the data stream synchronization in the voice call signal and the video transmission call is executed, and optionally, the synchronous position information is added at the switching signal according to the timestamp information.
When the first network is switched to the second network, the transmitted multimedia stream is judged to be the multimedia stream of the same call through the synchronous position information. At a user end, adding specific synchronous information in a specific position of an RTP/RTCP protocol for transmitting multimedia through a sending terminal; then, the user terminal transmits the multimedia data stream added with the specific synchronization information to the network device through the first network and the second network.
After receiving the multimedia data streams from the two networks, the server center detects whether specific synchronization information is contained in a specific position from RTP or RTCP, and if the multimedia data streams transmitted by the two networks contain the same specific synchronization information in the same specific position, the server center judges that the two data streams are high-definition voice/video data streams of the same call.
Meanwhile, when the first or second network signal strength is judged to be lower than the threshold value, the user terminal locally caches the network video or voice information lower than the threshold value, transmits content associated with the call to the server center in response to the operation of the user after switching, acquires the stored voice or video content from the user side cache information, and acquires the call associated with the cached content. After sending the call information corresponding to the stored video or voice content, the user terminal sends the cached content information and the information related to the unified session content after switching the network to the server center, and then performs sequencing and de-duplication playing of the timestamps. It is ensured that the information that the user has sent can be acquired after a speech signal or a video signal has been interrupted in a dangerous situation. Under dangerous conditions, after the voice signal or the video signal is interrupted, the information transmitted by the parallel network is merged, so that the information sent by the user can be cached at the local end and can be transmitted out in time after switching, and the information is prevented from being lost after the user and the server are interrupted. In the crisis process, the attention of the alarm person is basically in the aspect of preventing danger, and the feedback of the external voice information is slow usually in the self-speaking and self-speaking process, so that whether the information is fed back and recorded cannot be known.
Optionally, a processor in the communication device is provided with signal intensity thresholds, wherein different signal thresholds correspond to different video picture qualities, when the signal intensity reaches a certain threshold, the corresponding video picture quality is automatically switched to, when the signal intensity does not reach the threshold of the video call, the voice communication is automatically switched to, the server center receives the alarm information of the user through voice prompt, and the user only needs to execute the step-by-step answer demonstration according to the voice prompt.
Optionally, the handover mode may also be adopted, if the delay parameter meets a preset voice service condition corresponding to the network, for example, is less than a first preset duration, the terminal may register a voice call service in the network after connecting with the user terminal through the target access network; if the time delay parameter meets the preset video service condition corresponding to the network, for example, the time delay parameter is less than a second preset time (the second preset time is less than the first preset time), the terminal can register the video call service in the network after connecting with the user equipment through the target access network.
Optionally, the autonomous emergency base station is triggered to work according to the position information. Further, the server acquires the position information of the equipment of the user terminal, judges the danger level information through the cell base station information of the user terminal, acquires and sets the coding and decoding rate according to the switching instruction when the danger level is in a higher emergency state, and triggers the user terminal to transmit a bit rate inquiry to the second cell; when feeding back and obtaining the determined response, the user terminal transmits the suggested bit rate to the second cell; the ue changes the codec rate according to its own decision to obtain better voice/video quality, for example, when the channel quality indicator (channel quality indicator) or signal strength/quality of the second cell is better and higher than a threshold, a handover response is performed.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), a Solid State Drive (SSD), or the like; the storage medium may also comprise a combination of memories of the kind described above.
As used in this application, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being: a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of example, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between two or more computers. In addition, these components can execute from various computer readable media having various data structures thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A video call method under the condition of emergency call is characterized in that:
when the server center judges that the voice content information in the voice call of the user does not meet the requirements of the alarm definition and the alarm continuity; triggering a data transmission channel between the server center and the user terminal, remotely triggering the camera video authority of the user terminal equipment and triggering a video call;
the server center executes image feature matching according to information acquired by terminal shooting, the image feature information is compared and analyzed with original image feature information acquired by a user terminal, whether the image feature information is matched with information of an image model base of the server center or not is judged, and if yes, early warning prompt information is generated according to matched type information;
after the early warning prompt information is generated, the video image signal is transmitted to a risk factor evaluation module of a server center for risk evaluation so as to generate early warning level warning information; determining whether to execute a voice call and video call dual-network coexistence mode or not according to the early warning level alarm information;
the server center sends corresponding alarm program demonstration information to the user terminal according to the matched early warning prompt information; the alarm program demonstrates information, split screen display is performed on a display screen of the user terminal, a demonstration video interface and camera shooting data are matched in real time, and therefore a user is reminded to adjust the camera shooting position to obtain appropriate alarm information parameter information.
2. The method of claim 1, further characterized by: the data transmission channels of the trigger server center and the user terminal are specifically as follows: after the user alarm is connected, the server center sends a short message to the user equipment, and the user equipment establishes data communication connection with the server center by clicking a webpage link in the short message; the server center is a medical server center or a public emergency service server center.
3. The method of claim 2, further characterized by: detecting a mode switching instruction of a video call mode according to the user input in a state of maintaining a voice call of the server center through the voice call mode, and when detecting that the electronic device is switched to the video call mode, displaying information in the video call mode with the server center on a user interface of the user device in the state of maintaining the voice call, the information in the video call mode at least comprising: displaying at least one piece of video display information associated with the operation of the additional function on the user interface, wherein the video display information and the alarm program demonstration information are displayed in regions.
4. The method of claim 3, further characterized by: when a video call is carried out, when a display interface of user equipment displays a video picture as a main picture, a user switches the picture in a video call mode to the display picture in a demonstration mode in a button clicking mode, and the user executes the input of voice or video signals according to video demonstration information.
5. The method of claim 3, wherein: the regional operation is to display a video call operation menu identifier on a display interface of user equipment, pop up a video call operation menu according to the operation of clicking the video call operation menu identifier by a user, and prompt the user to acquire a mode switching instruction in a mode of selecting mode switching operation in the video call operation menu.
6. The method of claim 5, wherein: when the server center judges that the danger level is high, triggering voice call transmission and video transmission to execute concurrent data transmission through different networks, wherein the networks comprise a first network and a second network; and simultaneously, acquiring the position information of the user to acquire the base station information of the peripheral cells.
7. The method of claim 6, wherein: and signal intensity thresholds are arranged in the server center or the user equipment, wherein different video image qualities corresponding to different signal thresholds are automatically switched to the corresponding video image quality when the signal intensity reaches a preset threshold, and the signal intensity is automatically switched to voice communication when the signal intensity does not reach the threshold of the video call.
8. The method of claim 6, wherein: and when the information transmission is carried out by two networks of voice communication and video call, the synchronous association is carried out by the timestamp in the voice data transmission packet in the voice call and the video call.
9. The method of claim 8, wherein: the first network is a WiFi network, the second network is a data transmission network, when the signal intensity of the first network or the second network is judged to be lower than a threshold value, the video or voice information of the user terminal is cached locally, after switching, in the process of responding to the operation of a user and transmitting the content associated with the call to the server center, new content is obtained from the cache information of the user terminal, and after the call information corresponding to the new content is sent, the call associated with the new content is obtained; and after the user terminal sends the cached content information and the information related to the unified session content after switching the network to the server center, the content is played in a de-duplication mode according to the sequencing of the timestamps.
10. A video communication system in case of an emergency call, said system comprising a server and a plurality of user terminal devices, said system performing the method of any of the claims 1-9.
Priority Applications (1)
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