CN112542156A - Civil aviation maintenance worker card system based on voiceprint recognition and voice instruction control - Google Patents
Civil aviation maintenance worker card system based on voiceprint recognition and voice instruction control Download PDFInfo
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Abstract
The invention provides a civil aviation maintenance work card system based on voiceprint recognition and voice instruction control, which comprises an audio acquisition device, a noise reduction processing module, a voiceprint recognition module, a service processing module and a voice synthesis module, wherein the audio acquisition device acquires an audio file and transmits the audio file to the noise reduction processing module, the noise reduction processing module performs environmental sound filtration and human voice gain processing on the received audio file and transmits the processed audio file to the voiceprint recognition module, the voiceprint recognition module performs fragmentation, peak clipping and feature extraction on the noise-reduced audio file, a voiceprint model is constructed according to features and compared with a sample voiceprint model, comparison similarity is returned, and the comparison similarity is transmitted to the service processing module, and the service processing module performs identity verification according to the comparison similarity. The civil aviation maintenance work card system based on voiceprint recognition and voice instruction control solves the problem of work card operation safety through biotechnology, and meanwhile, maintenance flow is organized and intelligentized based on voice recognition control.
Description
Technical Field
The invention relates to the technical field of civil aviation, in particular to a civil aviation maintenance work card system based on voiceprint recognition and voice instruction control.
Background
With the development of aviation computer technology, communication technology and modern management, the whole production activity enters the information age. New technology, new materials, application of new technology, new systems, new designs, new products and revolutionary changes in the maintenance industry. Traditional maintenance work is overhauld the operation, takes notes inspection result and step inspection at the aircraft scene by maintenance personal or engineer and the handheld paper work list of inspector, and it is more to receive environmental factor in the work, and the prior art promotes to some extent, has electron worker card technique, and help maintenance and inspector alleviate some work, still exist not enoughly:
the paper worksheet is easily influenced and limited by weather, such as rain, wind and other external factors, so that the paper worksheet is difficult to use.
The unclear communication among the working personnel results in repeated communication, repeated steps of maintenance or inspection and the like.
The maintenance steps are easily omitted by workers, so that the repeated operation steps are caused, and the maintenance and inspection cost is increased.
The maintenance and inspection needs to hold an electronic work sheet card by hand, click and browse the work content by an electronic pen or fingers, and after the maintenance and inspection are finished according to the requirement of the work card, the work efficiency and the management efficiency are hindered by checking and determining the work content one by one and electronically signing the work content.
In the application No.: CN201910938748.9, the chinese patent application relates to an electronic signature system for civil aviation maintenance, which at least comprises: the electronic work card generating module is used for generating a first electronic work card; the dispatching module is used for receiving the work items in real time and generating maintenance tasks; the electronic work card sending module is used for acquiring the first electronic work card and the maintenance task, forming a second electronic work card containing the maintenance task, and sending the second electronic work card to the corresponding personal account; the signature module is used for acquiring an electronic signature for a second electronic work card in the personal account number to form a third electronic work card containing the electronic signature; and the electronic work card filing module is used for acquiring a third electronic work card and filing the third electronic work card. The signature module uses an electronic signature technology, and has the following disadvantages: although electronic signature technology is used, the method is still based on handwriting input, the possibility of counterfeiting exists, and the cost is high due to the need of remote authentication service of a third party CA. The invention focuses on the electronic signature technology, pays attention to safety, but cannot improve the working efficiency and convenience of maintenance personnel.
The electronic signature system has the following disadvantages: only an electronic work card is proposed to replace a paper work single card, the electronic signature work card is not deeply improved and has a single function, further deep improvement is not proposed for a digital work single card, and the reliability of the digital work single card cannot be guaranteed; the inspection and maintenance of civil aircrafts are very important, so that the work responsibility is realized to people, the process protection and the uniqueness of operators are strictly controlled, and the electronic signature system cannot guarantee the accuracy and the authenticity of a work single card. Although the electronic signature system replaces part of paper work single cards, the hands of maintenance personnel and inspection personnel are not really liberated during the work, the inconvenience caused by the paper work single cards still exists, the requirements of authenticity, reliability and preferably legal effectiveness on the work single cards exist in the inspection and maintenance of the aircraft, so that the responsibility is conveniently implemented, in addition, the work of complicated processes is clearly transmitted to maintenance engineers and the inspection personnel during the work, the work efficiency is improved, and the reduction of the work errors is also particularly important.
Therefore, a novel civil aviation maintenance work card system based on voiceprint recognition and voice instruction control is invented, and the technical problems are solved.
Disclosure of Invention
The invention aims to provide a civil aviation maintenance work card system which fundamentally solves the problem of work card operation safety through biotechnology, and meanwhile, organizes the maintenance flow based on voice recognition control, and is intelligentized based on voiceprint recognition and voice instruction control.
The object of the invention can be achieved by the following technical measures: the civil aviation maintenance work card system based on voiceprint recognition and voice instruction control comprises an audio acquisition device, a noise reduction processing module, a voiceprint recognition module, a service processing module and a voice synthesis module, wherein the audio acquisition device is connected with the noise reduction processing module, acquires an audio file and transmits the audio file to the noise reduction processing module, the noise reduction processing module is connected with the voiceprint recognition module, the received audio file is subjected to environmental sound filtration and human voice gain processing and then is transmitted to the voiceprint recognition module, the voiceprint recognition module is connected with the service processing module, the audio file subjected to noise reduction is subjected to fragmentation, peak clipping and feature extraction, a voiceprint model is constructed according to features and compared with a sample voiceprint model, comparison similarity is returned, and the comparison similarity is transmitted to the service processing module, and the service processing module carries out identity verification according to the comparison similarity.
The object of the invention can also be achieved by the following technical measures:
the civil aviation maintenance worker card system based on voiceprint recognition and voice instruction control further comprises a voice awakening module, the voice awakening module is connected to the audio acquisition equipment, the voice awakening module starts an SCO channel of the audio acquisition equipment after receiving a voice awakening signal transmitted by an operator through equipment (Xiaoyan 1), and the audio acquisition equipment starts to acquire a voice data signal after the SCO channel is started.
This audio acquisition equipment is opened the back at the SCO passageway, gathers operating personnel's voice data signal to with language data signal transmission to android client, android client encodes the transcription into PCM audio file to the voice data signal of binary digit data format, and transmits PCM audio file back this audio acquisition equipment, and this audio acquisition equipment of back gives this noise reduction processing module PCM audio file transmission.
The audio acquisition device adopts a Bluetooth headset supporting a Bluetooth 5.0 protocol.
The civil aviation maintenance worker card system based on voiceprint recognition and voice instruction control further comprises a voice recognition module, wherein the voice recognition module is connected to the noise reduction module, and the noise-reduced audio file transmitted by the noise reduction module is converted into human recognizable text information.
The civil aviation maintenance work card system based on voiceprint recognition and voice instruction control further comprises a voice instruction module, wherein the voice instruction module is connected with the voice recognition module and the business processing module, and preset information is extracted from text information output by the voice recognition module and used for system flow control or report filling.
And the business processing module generates prompt and warning information according to the comparison similarity.
The civil aviation maintenance work card system based on voiceprint recognition and voice instruction control further comprises a voice synthesis module, the voice synthesis module is connected to the business processing module and the audio acquisition equipment, and after the voice synthesis module synthesizes prompt and warning information generated by the business processing module into audio stream data, the audio stream data are transmitted to the audio acquisition equipment to be broadcasted.
The civil aviation maintenance work card system based on voiceprint recognition and voice instruction control further comprises a database supporting module, wherein the database supporting module is connected to the voiceprint recognition module and the service processing module and stores data transmitted by the voiceprint recognition module and the service processing module.
In the process of inspection and maintenance of civil aircrafts moving forward to paperless and intelligent, two problems need to be solved: firstly, safety and secondly convenience. The civil aviation maintenance work card system based on voiceprint recognition and voice instruction control solves the safety problem left over by the traditional handwritten signature mode and the problem of how to enable the maintenance process to be convenient and intelligent, fundamentally solves the work card operation safety problem through biotechnology, and meanwhile, the maintenance process is organized and intelligent based on voice recognition control, so that maintenance personnel can liberate hands, concentrate on aircraft maintenance and improve the working efficiency. Compared with the prior art, the invention has the following advantages:
1. the uniqueness detection can be carried out on maintenance engineers and inspectors based on voiceprint identification, so that the authenticity and the reliability of a work single card are ensured, the legal effect is achieved, and the implementation of responsibility is facilitated.
2. The maintenance process is controlled through the voice instruction in the maintenance process, the maintenance process can be ensured to be orderly carried out, the maintenance project progress and the working state are monitored in real time, the operation omission is reminded in real time by using a voice technology, and the work project missing is effectively avoided;
3. through voice control maintenance flow, liberation maintenance engineer's both hands let the engineer be absorbed in the maintenance of aircraft affairs, improve maintenance efficiency, reduce cost of maintenance, reduce the flight delay.
4. The system can record the signing time, the working time, the flow problems, the operation reminding and other information of maintenance work in the system, and really separate from a paper work single card, thereby reducing the environmental pressure. The problem of work single card storage is solved through the database storage operation process work cards, data integrity is guaranteed, work card distribution inspection is supported, and the risk of using overdue work single cards is reduced.
5. The whole flying state of the airplane is comprehensively controlled by monitoring and analyzing the long-term maintenance single card of the airplane, so that maintenance personnel and inspection personnel can conveniently browse and recheck historical problems and trace the root of a fault.
Drawings
FIG. 1 is a block diagram of an embodiment of a civil aviation service card system based on voiceprint recognition and voice command control according to the present invention.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, and/or combinations thereof, unless the context clearly indicates otherwise.
Referring to fig. 1, fig. 1 is a block diagram of a civil aviation service card system based on voiceprint recognition and voice command control according to the present invention. The civil aviation maintenance work card system based on voiceprint recognition and voice instruction control is composed of a voice awakening module 1, an audio acquisition device 2, a noise reduction processing module 3, a voice recognition module 5, a voiceprint recognition module 4, a voice instruction module 6, a service processing module 7, a voice synthesis module 8 and a database supporting module 9.
The voice awakening module 1 is connected to the audio device acquisition module 2, and after receiving a voice awakening signal transmitted by an operator through the Bluetooth headset device, the SCO channel of the audio acquisition device 2 is opened. The SCO channel is oriented towards synchronous connections, having a fixed bandwidth channel, mainly for voice transmission.
Audio acquisition equipment 2 connects in this noise reduction processing module 3, opens the back at the SCO passageway, gathers operator's voice data signal, sends to tall and erect client of ann, and the client is compiled and decoded binary byte data and is transcribed into the PCM audio file of industry standard, then gives this noise reduction processing module 3 with PCM audio file transmission.
The noise reduction processing module 3 is connected to the voice recognition module 5 and the voiceprint recognition module 4, and transmits the received PCM audio file after performing environmental sound filtering and human voice gain processing to the voice recognition module 5 and the voiceprint recognition module 4.
The voiceprint recognition module 4 is connected to the service processing module 7, and is used for carrying out fragmentation, peak clipping and feature extraction on the voice signal subjected to noise reduction, comparing the voiceprint model constructed according to the features with the sample voiceprint model, returning the comparison similarity, and carrying out identity verification according to the result similarity by the service processing module. Such as user login, process control for work card maintenance tasks.
The voice recognition module 5 is connected to the voice command module 6, and converts the unstructured voice command after noise reduction into text information recognizable to human beings.
The voice instruction module 6 is connected to the service processing module 7, and extracts preset information from the text information output by the voice recognition module 5, and the preset information is used for system flow control or report filling. When the built-in instruction is extracted, the instruction can flow to the service processing module. The built-in instructions are used for process control of the maintenance of the work card, such as starting, ending a task, performing a next step, inputting mapping data, and the like.
The service processing module 7 is connected to the speech synthesis module 8. The service module needs to display the step content of the maintenance work card or system prompt information such as data entry errors to the user in a voice playing mode. The operation of text-to-speech is involved in the process, and a speech synthesis module is required to be used. The speech synthesis module 8 finally outputs a piece of audio stream data.
And the voice synthesis module 8 synthesizes the prompt and warning information generated by the service processing module 7 into audio stream data and broadcasts the audio to the user through an android SDK.
The database support module 9 is connected to the voiceprint recognition module 4 and the service processing module 7 for storing the data of the voiceprint recognition module 4 and the service processing module 7. Meanwhile, the business process operation is stored paperless and is filed uniformly.
In a specific embodiment of the invention, the working flow of the civil aviation service card system based on voiceprint recognition and voice instruction control is as follows:
operating personnel carries out pronunciation through bluetooth headset equipment and awakens up, places the customer end in the module 1 is awaken up to pronunciation in, mainly used opens audio acquisition equipment 2's SCO passageway to avoid using long-term voice button to carry out the audio acquisition, realize the purpose of liberating both hands completely. In addition, the user behavior is monitored by using voice awakening instead of a long polling mode, so that the power consumption of the equipment can be effectively reduced.
After voice awakening, an operator issues an instruction, the voice instruction passes through the audio acquisition device 2, a Bluetooth headset supporting a Bluetooth 5.0 protocol is used in the system, the Bluetooth headset is connected to an Android device, a Bluetooth SCO channel is opened through the voice awakening module 1, audio data acquired by the Bluetooth headset can be continuously transmitted to the Android application, and when the audio data acquisition is stopped, the voice identification module is controlled by VAD (voice activity detection) technology. The bluetooth headset is of course not only used to collect audio signals, but its basic function is to play audio. The voice synthesis module in the system can convert the generated text information such as prompts, warnings, processes and the like into voice information in real time, and switches the voice information to an ACL channel of the Bluetooth headset for playing.
After the voice command is collected by the audio collecting device 2, the voice command is processed. The incorporation of the noise reduction processing module 3 is significant to the system for the following reasons: 1. because the system needs to realize identity verification according to the voiceprint information of people, the audio signals acquired in real time and the registered audio signals are ensured not to be interfered by other factors 2. because the system is applied to civil aviation maintenance sites, the site environment has specificity, noise reduction treatment is required, otherwise, the accuracy of voice recognition is influenced. The noise reduction processing module performs ANS noise reduction processing and AGC gain strengthening on the real-time audio data based on WebRTC so as to ensure that the audio data transmitted to the voiceprint recognition module and the voice recognition module have clear and complete waveforms and stable characteristics.
And the voice command after the noise reduction processing can perform voiceprint recognition and voice recognition. The voiceprint recognition module 4 processes the received audio signal through the processing of the above modules, extracts the current voiceprint model and compares the current voiceprint model with the sample voiceprint model. And respectively selecting obvious and stable characteristics from the two compared voiceprint models as comparison characteristics. The frequency value of the formant and the trend of the waveform thereof are the most stable characteristics, and have strong specificity and highest utilization value. The sample voiceprint model registration process is consistent with the real-time voiceprint model generation process, and is not repeated, and the sample voiceprint model generated by registration is stored in the database support module. The result of the voiceprint recognition is applied to a service processing module, such as system login, start and end of maintenance work card or key steps.
The speech recognition module 5 serves to convert unstructured audio signals into human-recognizable text information. The implementation process is to receive audio data from the noise reduction processing module in real time and slice and frame each small segment of audio. Extracting MFCC characteristics according to physiological characteristics of human ears, comparing the characteristic quantity with an acoustic model obtained by training, obtaining similar texts from a model mapping relation table, and then combining adjacent frames through a Hidden Markov Model (HMM) to obtain a natural text.
And after voice recognition, the comparison system issues a voice instruction. The voice instruction module 6 is used for extracting preset information from the text information output by the voice recognition module and used for system flow control or report filling. The output of speech recognition may be some daily dialog information that the system needs to filter for discarding. The voice instruction module uses a rapid word segmentation technology to establish an inverted index for the real-time text information, and the inverted index is efficiently and accurately compared with a built-in instruction of the system. When the built-in instruction is extracted, the instruction can flow to the service processing module.
After receiving the voice command, the system will transfer the command to the service processing module 7 for service processing, and at the same time, will perform information conversion with the database. The business processing module comprises functions of user login, registration, management, task assignment, work card flow, log management and the like, wherein the user registration, the registration and the work card flow are realized by combining the voice instruction module 6 and the voiceprint recognition module 4. For example, when a user logs in or registers, voiceprint authentication is required; when the work card flow is started, the voiceprint recognition result is firstly verified, and then a corresponding response (service is discarded or started) is made according to the voice instruction. The data generated and quoted by the business processing module needs to be acquired or stored from the database support module.
The voice command is processed by the system, and the corresponding service in the system is called and fed back to the operator through voice synthesis. The voice synthesis module 8 is used for converting the prompt and warning information generated by the service processing module into audio data and broadcasting the audio data to the user (bluetooth headset). Speech synthesis is speech recognition's reverse technique, and after the speech data was generated through off-line speech synthesis technique, the business processing module can open the acl passageway of audio acquisition equipment (bluetooth headset promptly), carries out voice playing, when reporting the back of finishing, closes acl passageway.
The database support module 9 is mainly used for storing data of the voiceprint recognition module and the service processing module. Meanwhile, the business process operation is stored paperless and is filed uniformly.
The invention introduces the voiceprint recognition technology, uses the biological recognition technology to convert the acoustic signal into the electric signal, and then uses the computer to recognize, so that the voiceprint after the adult has uniqueness, thereby having more authenticity, uniqueness and legal effect compared with the traditional electronic signature technology. The invention also introduces a voice recognition control technology, solves the problems of complicated flow, inconvenient operation and the like suffered by maintenance personnel in the actual maintenance process through the technology, organizes and logicalizes the complicated flow, and greatly reduces the problem of omission of the flow operation steps of the maintenance personnel; through the voice control technology, maintenance personnel can be separated from the paper work single card in the whole process, electronic signature confirmation and electronic data entry operation are not needed, both hands of the maintenance personnel are liberated, and the work efficiency is improved. All operation flow single cards can carry out automatic information uploading and classified storage in a data mode, all operations can be reserved, maintenance personnel can conveniently browse and troubleshoot system faults, and meanwhile fault responsibility can be favorably implemented. And each airplane carries out time series storage on the fault information of each flight, and data support and theoretical basis are provided for flight delay research, airplane maintenance state tracking and multi-day stop scheduled inspection. After the project is verified by application, the method can be popularized and used in the field of civil aviation maintenance in China. Meanwhile, the civil aviation maintenance databases of all aviation departments or maintenance companies can be intercommunicated and shared, and a national civil aviation maintenance database is established. Promote the civil aviation maintenance of our country to go one step more.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In addition to the technical features described in the specification, the technology is known to those skilled in the art.
Claims (9)
1. The civil aviation maintenance worker card system based on voiceprint recognition and voice instruction control is characterized by comprising an audio acquisition device, a noise reduction processing module, a voiceprint recognition module, a service processing module and a voice synthesis module, wherein the audio acquisition device is connected with the noise reduction processing module, acquires an audio file and transmits the audio file to the noise reduction processing module, the noise reduction processing module is connected with the voiceprint recognition module, the received audio file is subjected to environmental sound filtration and human voice gain processing and then is transmitted to the voiceprint recognition module, the voiceprint recognition module is connected with the service processing module, the denoised audio file is subjected to fragmentation, peak clipping and feature extraction, a voiceprint model is constructed according to features and compared with a sample voiceprint model, the comparison similarity is returned, and the comparison similarity is transmitted to the service processing module, and the service processing module carries out identity verification according to the comparison similarity.
2. The civil aviation service card system based on voiceprint recognition and voice command control as claimed in claim 1, further comprising a voice wake-up module, wherein the voice wake-up module is connected to the audio capture device, the voice wake-up module turns on the SCO channel of the audio capture device after receiving the voice wake-up signal transmitted by the operator through dawn 1, and the audio capture device starts to capture the voice data signal after the SCO channel is turned on.
3. The civil aviation service man-card system based on voiceprint recognition and voice instruction control as claimed in claim 2, wherein the audio acquisition device acquires voice data signals of an operator after the SCO channel is opened, and sends the voice data signals to the android client, the android client performs coding, decoding and transcribing on the voice data signals in binary byte data format to form a PCM audio file, and transmits the PCM audio file back to the audio acquisition device, and then the audio acquisition device transmits the PCM audio file to the noise reduction processing module.
4. The civil aviation service card system based on voiceprint recognition and voice command control as claimed in claim 1, wherein the audio collection device is a bluetooth headset supporting bluetooth 5.0 protocol.
5. The civil aviation service card system based on voiceprint recognition and voice command control as claimed in claim 1, wherein the civil aviation service card system based on voiceprint recognition and voice command control further comprises a voice recognition module, the voice recognition module is connected to the noise reduction module, and the noise-reduced audio file transmitted by the noise reduction module is converted into text information recognizable to human beings.
6. The civil aviation maintenance work card system based on voiceprint recognition and voice command control as claimed in claim 5, wherein the civil aviation maintenance work card system based on voiceprint recognition and voice command control further comprises a voice command module, the voice command module is connected to the voice recognition module and the service processing module, and preset information is extracted from text information output by the voice recognition module and used for system flow control or report filling.
7. The civil aviation maintenance work card system based on voiceprint recognition and voice instruction control as claimed in claim 1, wherein the business processing module generates prompt and warning information according to the comparison similarity.
8. The civil aviation maintenance worker card system based on voiceprint recognition and voice command control as claimed in claim 7, wherein the civil aviation maintenance worker card system based on voiceprint recognition and voice command control further comprises a voice synthesis module, the voice synthesis module is connected to the business processing module and the audio acquisition device, and the voice synthesis module synthesizes the prompt and warning information generated by the business processing module into audio stream data and transmits the audio stream data to the audio acquisition device for broadcasting.
9. The civil aviation maintenance worker card system based on voiceprint recognition and voice command control as claimed in claim 1, wherein the civil aviation maintenance worker card system based on voiceprint recognition and voice command control further comprises a database support module, the database support module is connected to the voiceprint recognition module and the service processing module, and stores data transmitted by the voiceprint recognition module and the service processing module.
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