CN112350793A - Audio monitoring method for emergency broadcasting - Google Patents
Audio monitoring method for emergency broadcasting Download PDFInfo
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- CN112350793A CN112350793A CN202011031941.3A CN202011031941A CN112350793A CN 112350793 A CN112350793 A CN 112350793A CN 202011031941 A CN202011031941 A CN 202011031941A CN 112350793 A CN112350793 A CN 112350793A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
- H04L1/0042—Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides an audio monitoring method for emergency broadcasting in the technical field of emergency broadcasting communication, which comprises the following steps: step S10, the emergency broadcast adapter records the played emergency broadcast to generate a recording file, and names and stores the recording file; step S20, the emergency broadcast adapter sends the playing result and the recording record to the server; step S30, the emergency broadcast adapter receives the recording extraction instruction sent by the server, and sends the corresponding recording file to the server based on the recording extraction instruction; step S40, the server acquires heartbeat data of the emergency broadcast adapter and sends a real-time audio extraction instruction to the emergency broadcast adapter based on the heartbeat data; and step S50, the emergency broadcast adapter sends real-time audio to the server based on the received real-time audio extraction instruction. The invention has the advantages that: the recording storage, the recording passback and the real-time audio monitoring of the emergency broadcast are realized, the later tracing and the real-time supervision are facilitated, and the quality of the emergency broadcast is further ensured.
Description
Technical Field
The invention relates to the technical field of emergency broadcast communication, in particular to an audio monitoring method for emergency broadcast.
Background
At present, the technical field of emergency broadcast communication has a national standard technical specification of 'GDJ 089-2018 emergency broadcast loud speaker system technical specification', however, the national standard technical specification does not provide provisions for recording storage, recording return and real-time audio monitoring of an emergency broadcast adapter and an emergency broadcast system. However, recording storage, recording feedback and real-time audio monitoring are indispensable functions in a monitoring module of the emergency broadcasting system, the emergency broadcasting adapter needs to record, store and manage the current-level and superior broadcasts, and the emergency broadcasting system needs to monitor the real-time audio, otherwise, the quality of the emergency broadcasting cannot be guaranteed.
Therefore, how to provide an audio monitoring method for emergency broadcasting realizes recording storage, recording feedback and real-time audio monitoring of emergency broadcasting, facilitates source tracing and real-time supervision in the later period, and further guarantees the quality of emergency broadcasting, which becomes a problem to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an audio monitoring method for emergency broadcasting, which realizes recording storage, recording return and real-time audio monitoring of emergency broadcasting, facilitates later traceability and real-time supervision, and further guarantees the quality of emergency broadcasting.
The invention is realized by the following steps: an audio monitoring method for emergency broadcasting, comprising the steps of:
step S10, the emergency broadcast adapter records the played emergency broadcast to generate a recording file, and names and stores the recording file by using a preset file naming rule;
step S20, the emergency broadcast adapter sends the playing result and the recording record to the server;
step S30, the emergency broadcast adapter receives a recording extraction instruction sent by the server, and sends a corresponding recording file to the server based on the recording extraction instruction;
step S40, the server acquires heartbeat data of the emergency broadcast adapter and sends a real-time audio extraction instruction to the emergency broadcast adapter based on the heartbeat data;
and step S50, the emergency broadcast adapter sends real-time audio to the server based on the received real-time audio extraction instruction.
Further, in step S10, the file naming rule is: emergency broadcast message encoding + recording start timestamp; the emergency broadcast message code is used for recording a broadcast node and an emergency broadcast source of the emergency broadcast, and the broadcast node comprises a current level and an upper level.
Further, in step S10, the file name of the sound recording file is encoded by ASCII.
Further, the step S20 is specifically:
when the emergency broadcast is finished, the emergency broadcast adapter sends a playing result and a recording record of which the content is the playing completion to the server; the playing results correspond to the recording records one by one;
the recording record comprises emergency broadcast message codes, sound sources and file names of recording files; the sound source at least comprises a local microphone, a telephone inter-cut, a short message inter-cut, a superior broadcast, a USB flash disk, FM, an external sound source, IP-RTSP, IP-TS, a ground digital television and a cable digital television.
Further, the step S30 specifically includes:
step S31, the server receives the playing result and the recording record, searches the associated recording record based on the playing result, generates a recording extracting instruction based on the recording record and sends the instruction to the emergency broadcast adapter;
step S32, the emergency broadcast adapter receives the recording extraction instruction, sends the corresponding recording file to the server by using a POST request based on the recording extraction instruction, and feeds back a sending result of the sending completion to the server; the POST request carries the MD5 value of the sound recording file;
step S33, after the server receives the sending result, the MD5 value is used for verifying the received sound recording file, if the verification is successful, the sound recording file is played, and the step S40 is carried out; if the verification fails, the process proceeds to step S31.
Further, in the step S30, the recording extracting instruction includes a file name of the recording file, a server address path, and a server address length.
Further, the step S40 is specifically:
the method comprises the steps that a server obtains heartbeat data of an emergency broadcast adapter in real time, and the working state of the emergency broadcast adapter is judged based on the heartbeat data; the working state comprises online, offline and idle; and when the working state of the emergency broadcast adapter is on-line, sending a real-time audio extraction instruction to the emergency broadcast adapter.
Further, in step S40, the real-time audio extracting instruction includes a real-time audio extracting switch, a return mode, a return address, and a return address length;
the backhaul mode includes a UDP mode, a TCP mode, and an RTSP mode.
Further, the step S50 is specifically:
the emergency broadcast adapter sends real-time audio corresponding to a return mode to the return address of the server based on the received real-time audio extraction instruction, and the server forwards and plays the real-time audio based on the return address.
The invention has the advantages that:
1. recording the played emergency broadcast through an emergency broadcast adapter, naming and storing a recording file, and sending a playing result and a recording record to a server; when the server needs to extract the recording file, the server sends a recording extraction instruction to the emergency broadcast adapter to acquire the recording file based on the playing result and the recording record; the server acquires heartbeat data of the emergency broadcast adapter in real time, and when real-time audio needs to be monitored, the server sends a real-time audio extracting instruction to the emergency broadcast adapter based on the heartbeat data to acquire the real-time audio, so that recording storage, recording return and real-time audio monitoring of emergency broadcast are realized, later traceability and real-time supervision are facilitated, and the quality of the emergency broadcast is further guaranteed.
2. Through with recording file distributing type save on emergent broadcast adapter, need extract the recording file at the server to when sending recording extraction instruction to emergent broadcast adapter, emergent broadcast adapter just sends the recording file for the server, very big storage pressure and the bandwidth pressure that has alleviateed server recording file.
3. The server checks the received sound recording file by using the MD5 value through requesting the MD5 value carrying the sound recording file at the POST, namely, the emergency broadcast adapter calculates the sound recording file by using the MD5 algorithm before sending the sound recording file to generate the MD5 value, the server calculates the sound recording file by using the MD5 algorithm after receiving the sound recording file to generate the MD5 value, whether the sound recording file is damaged or not can be judged by comparing whether the MD5 values generated twice are consistent or not, further, the transmission safety of the sound recording file is greatly improved, and the sound recording file is ensured to be correctly returned.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a flowchart of an audio monitoring method for emergency broadcasting according to the present invention.
FIG. 2 is a diagram of the hardware architecture of the present invention.
Detailed Description
The technical scheme in the embodiment of the application has the following general idea: naming and storing the recording file through an emergency broadcast adapter, and sending a playing result and a recording record to a server; the server sends a recording extracting instruction to the emergency broadcast adapter to obtain a recording file based on the playing result and the recording record; the server sends a real-time audio extraction instruction to the emergency broadcast adapter based on the heartbeat data of the emergency broadcast adapter to acquire real-time audio, finally realizes recording storage, recording return and real-time audio monitoring of emergency broadcast, is convenient for later traceability and real-time supervision, and further guarantees the quality of the emergency broadcast.
Referring to fig. 1 to 2, a preferred embodiment of an audio monitoring method for emergency broadcasting according to the present invention includes the following steps:
step S10, the emergency broadcast adapter records the played emergency broadcast to generate a recording file, and names and stores the recording file by using a preset file naming rule; the emergency broadcast adapter records all received and issued emergency broadcasts;
step S20, the emergency broadcast adapter sends the playing result and the recording record to the server; the server runs an emergency broadcasting system; the data type of the sound recording is 0x 21;
step S30, the emergency broadcast adapter receives a recording extraction instruction sent by the server, and sends a corresponding recording file to the server based on the recording extraction instruction; the acquisition and storage of the recording file are both on the emergency broadcast adapter and are not actively sent to the server; the data type of the recording extracting instruction is 0x 51;
step S40, the server acquires heartbeat data of the emergency broadcast adapter and sends a real-time audio extraction instruction to the emergency broadcast adapter based on the heartbeat data; the data type of the real-time audio extraction instruction is 0x 52;
and step S50, the emergency broadcast adapter sends real-time audio to the server based on the received real-time audio extraction instruction. The emergency broadcast adapter does not record and store real-time audio, and only forwards it when needed by the server.
In step S10, the file naming rule is: emergency broadcast message encoding + recording start timestamp; the emergency broadcast message code is used for recording a broadcast node and an emergency broadcast source of emergency broadcast, and the broadcast node comprises a current level and an upper level; the server can judge whether the emergency broadcast belongs to the current-level broadcast or the superior-level broadcast through the file name, judge the source of the emergency broadcast, judge the generation time of the recording file and provide an important backtracking basis for the supervision of the emergency broadcast.
In step S10, the file name of the sound recording file is encoded by ASCII code.
The step S20 specifically includes:
when the emergency broadcast is finished, the emergency broadcast adapter sends a playing result and a recording record of which the content is the playing completion to the server; the playing results correspond to the recording records one by one;
the recording record comprises emergency broadcast message codes, sound sources and file names of recording files; the sound source at least comprises a local microphone (IP microphone), a telephone insertion, a short message insertion, an upper broadcast, a U disk, an FM, an external sound source, an IP-RTSP, an IP-TS, a terrestrial Digital Television (DTMB) and a cable digital television (DVBC).
The emergency broadcast message code is used for providing an index for the server associated recording record; the FM comprises a plurality of FM channels; the external sound source is the sound source of DVB, set-top box, etc.
The step S30 specifically includes:
step S31, the server receives the playing result and the recording record, searches the associated recording record based on the playing result, generates a recording extracting instruction based on the recording record and sends the instruction to the emergency broadcast adapter;
step S32, the emergency broadcast adapter receives the recording extraction instruction, sends the corresponding recording file to the server by using a POST request based on the file name of the recording extraction instruction, and feeds back a sending result of the sending completion to the server; the POST request carries the MD5 value of the sound recording file; namely, the transmission of the sound recording file adopts a blocking type, and only when the sound recording file is completely transmitted, the calculation can be carried out by utilizing a DM5 algorithm, and the calculation cannot be carried out while transmitting;
step S33, after the server receives the sending result, the MD5 value is used for verifying the received recording file, if the verification is successful, an audio playing interface is called to play the recording file, and the step S40 is carried out; if the verification fails, the process proceeds to step S31, and in practice, a failure threshold may be set, and when the number of failures exceeds the failure threshold, the process does not proceed to step S31.
In step S30, the recording extracting instruction includes a file name of the recording file, a server address path, and a server address length; the server address path is the url storing the sound recording file, and the server address length is the length of the url.
The step S40 specifically includes:
the method comprises the steps that a server obtains heartbeat data of an emergency broadcast adapter in real time, and the working state of the emergency broadcast adapter is judged based on the heartbeat data; the working state comprises online, offline and idle; and when the working state of the emergency broadcast adapter is on-line, sending a real-time audio extraction instruction to the emergency broadcast adapter.
In step S40, the real-time audio extracting instruction includes a real-time audio extracting switch, a return mode, a return address, and a return address length; the real-time audio extraction switch is used for switching on and off the real-time audio return function of the emergency broadcast adapter;
the backhaul mode includes a UDP mode, a TCP mode, and an RTSP mode.
The step S50 specifically includes:
the emergency broadcast adapter sends real-time audio corresponding to a return mode to the return address of the server based on the received real-time audio extraction instruction, sends a sending completion instruction to the server after the real-time audio is sent, and after receiving the sending completion instruction, the server forwards and plays the real-time audio based on the return address, namely monitors the real-time audio.
In summary, the invention has the advantages that:
1. recording the played emergency broadcast through an emergency broadcast adapter, naming and storing a recording file, and sending a playing result and a recording record to a server; when the server needs to extract the recording file, the server sends a recording extraction instruction to the emergency broadcast adapter to acquire the recording file based on the playing result and the recording record; the server acquires heartbeat data of the emergency broadcast adapter in real time, and when real-time audio needs to be monitored, the server sends a real-time audio extracting instruction to the emergency broadcast adapter based on the heartbeat data to acquire the real-time audio, so that recording storage, recording return and real-time audio monitoring of emergency broadcast are realized, later traceability and real-time supervision are facilitated, and the quality of the emergency broadcast is further guaranteed.
2. Through with recording file distributing type save on emergent broadcast adapter, need extract the recording file at the server to when sending recording extraction instruction to emergent broadcast adapter, emergent broadcast adapter just sends the recording file for the server, very big storage pressure and the bandwidth pressure that has alleviateed server recording file.
3. The server checks the received sound recording file by using the MD5 value through requesting the MD5 value carrying the sound recording file at the POST, namely, the emergency broadcast adapter calculates the sound recording file by using the MD5 algorithm before sending the sound recording file to generate the MD5 value, the server calculates the sound recording file by using the MD5 algorithm after receiving the sound recording file to generate the MD5 value, whether the sound recording file is damaged or not can be judged by comparing whether the MD5 values generated twice are consistent or not, further, the transmission safety of the sound recording file is greatly improved, and the sound recording file is ensured to be correctly returned.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (9)
1. An audio monitoring method for emergency broadcasting, characterized in that: the method comprises the following steps:
step S10, the emergency broadcast adapter records the played emergency broadcast to generate a recording file, and names and stores the recording file by using a preset file naming rule;
step S20, the emergency broadcast adapter sends the playing result and the recording record to the server;
step S30, the emergency broadcast adapter receives a recording extraction instruction sent by the server, and sends a corresponding recording file to the server based on the recording extraction instruction;
step S40, the server acquires heartbeat data of the emergency broadcast adapter and sends a real-time audio extraction instruction to the emergency broadcast adapter based on the heartbeat data;
and step S50, the emergency broadcast adapter sends real-time audio to the server based on the received real-time audio extraction instruction.
2. The audio monitoring method for emergency broadcasting according to claim 1, wherein: in step S10, the file naming rule is: emergency broadcast message encoding + recording start timestamp; the emergency broadcast message code is used for recording a broadcast node and an emergency broadcast source of the emergency broadcast, and the broadcast node comprises a current level and an upper level.
3. The audio monitoring method for emergency broadcasting according to claim 1, wherein: in step S10, the file name of the sound recording file is encoded by ASCII code.
4. The audio monitoring method for emergency broadcasting according to claim 1, wherein: the step S20 specifically includes:
when the emergency broadcast is finished, the emergency broadcast adapter sends a playing result and a recording record of which the content is the playing completion to the server; the playing results correspond to the recording records one by one;
the recording record comprises emergency broadcast message codes, sound sources and file names of recording files; the sound source at least comprises a local microphone, a telephone inter-cut, a short message inter-cut, a superior broadcast, a USB flash disk, FM, an external sound source, IP-RTSP, IP-TS, a ground digital television and a cable digital television.
5. The audio monitoring method for emergency broadcasting according to claim 1, wherein: the step S30 specifically includes:
step S31, the server receives the playing result and the recording record, searches the associated recording record based on the playing result, generates a recording extracting instruction based on the recording record and sends the instruction to the emergency broadcast adapter;
step S32, the emergency broadcast adapter receives the recording extraction instruction, sends the corresponding recording file to the server by using a POST request based on the recording extraction instruction, and feeds back a sending result of the sending completion to the server; the POST request carries the MD5 value of the sound recording file;
step S33, after the server receives the sending result, the MD5 value is used for verifying the received sound recording file, if the verification is successful, the sound recording file is played, and the step S40 is carried out; if the verification fails, the process proceeds to step S31.
6. The audio monitoring method for emergency broadcasting according to claim 1, wherein: in step S30, the recording extracting instruction includes a file name of the recording file, a server address path, and a server address length.
7. The audio monitoring method for emergency broadcasting according to claim 1, wherein: the step S40 specifically includes:
the method comprises the steps that a server obtains heartbeat data of an emergency broadcast adapter in real time, and the working state of the emergency broadcast adapter is judged based on the heartbeat data; the working state comprises online, offline and idle; and when the working state of the emergency broadcast adapter is on-line, sending a real-time audio extraction instruction to the emergency broadcast adapter.
8. The audio monitoring method for emergency broadcasting according to claim 1, wherein: in step S40, the real-time audio extracting instruction includes a real-time audio extracting switch, a return mode, a return address, and a return address length;
the backhaul mode includes a UDP mode, a TCP mode, and an RTSP mode.
9. The audio monitoring method for emergency broadcasting according to claim 8, wherein: the step S50 specifically includes:
the emergency broadcast adapter sends real-time audio corresponding to a return mode to the return address of the server based on the received real-time audio extraction instruction, and the server forwards and plays the real-time audio based on the return address.
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