CN209118466U - A kind of campus speech recognition alarm is sought help terminal - Google Patents
A kind of campus speech recognition alarm is sought help terminal Download PDFInfo
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- CN209118466U CN209118466U CN201821517733.2U CN201821517733U CN209118466U CN 209118466 U CN209118466 U CN 209118466U CN 201821517733 U CN201821517733 U CN 201821517733U CN 209118466 U CN209118466 U CN 209118466U
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Abstract
The utility model discloses a kind of campus speech recognition alarms to seek help terminal, it include: voice acquisition module, speech recognition module, video acquisition module, keyword storage unit, message processing module, alarm module, voice acquisition module is connected with speech recognition module, speech recognition module is connected with keyword storage unit, and keyword storage unit, video acquisition module are connected with message processing module；Speech recognition module is connected with alarm module.With this solution, the degree of association detection that can efficiently solve voice data key message, in the case where mandarin pronunciation intonation, plays deterrent effect to campus crime, prevents event from deteriorating for security and gains time.
Description
Technical field
The utility model relates to alarm fields more particularly to a kind of campus speech recognition alarm to seek help terminal.
Background technique
School safety work, is a highly important component part of whole society's trouble free service.It is directly related to blueness
Can juvenile student grow up safe and healthyly, be related to thousands upon thousands family's wellbeings peacefulnesses and social stability.
The publication report of the nineteen ninety World Health Organization, in world's most countries, unexpected injury is that children and youth causes
Hurt, disable, the lethal main reason died.In China, the Accidents death rate highest section majority generation of school-ager is being learned
In school and the way gone to school；And in the teenager of all ages and classes, and with the death rate highest of unexpected injury in 15 ~ 19 years old.
Unexpected injury not only causes the permanent disability and premature death of a large amount of children, consumes huge medical expense, and
Weaken national product power.Pain and misfortune not only are brought to child and family, but also it is huge to give society, government and school to cause
Burden and loss.According to investigations, between 1999 ~ 2002, student's injures and deaths thing that school compensates for economic losses occurs altogether for Beijing
Therefore more than 360 rise, half of them is met difficulty with going to school in the accident of processing.
Therefore, Campus Security problem has become the hot issue of various circles of society's concern.Each child is protected, makes to occur
Contingency with them is minimized, it has also become the important content of middle and primary schools' safety education and management.
For this purpose, establishing a set of effective Campus Security crime prevention system, prevent Campus Security hidden danger, it is increasingly urgent.
Campus alarm is sought help important supplement of the terminal as video monitoring system, and application is more and more extensive.Video is supervised at present
Control is that a kind of passive security protection system many times can only play the role of post-mordem forensics.Terminal is sought help in campus alarm can be tight
In anxious situation, with " key seek help, voice help " two ways notice campus security at the first time, won for disposition event as early as possible
Time allows loss to minimize.
To solve the above-mentioned problems, the utility model proposes a kind of campus speech recognition alarms to seek help terminal.
Utility model content
To solve the above-mentioned problems, the utility model proposes a kind of campus speech recognition alarms to seek help terminal, the terminal
Further include: voice acquisition module, speech recognition module, video acquisition module, keyword storage unit, message processing module, report
Alert module, voice acquisition module are connected with speech recognition module, and speech recognition module is connected with keyword storage unit, keyword
Storage unit, video acquisition module are connected with message processing module；Speech recognition module is connected with alarm module.
For being acquired to the voice data in installation environment, the voice acquisition module is set the voice acquisition module
It is set to microphone or sound pick-up.
The video acquisition module includes LD3320, and the output end of the sound pick-up is connected to by first capacitor
The 9th foot of LD3320, as the input of voice recognition chip, the LD3320 and the message processing module pass through spi bus
It is connected, the message processing module is ARM chip.
The ARM chip is chosen as N32926U1DN.
Video acquisition module includes camera module, and camera is digital image pickup unit, and output signal is CMOS format, institute
Stating video acquisition module is OV2640 camera module.
Keyword storage unit is flash.
Campus speech recognition alarm terminal of seeking help further includes transmitting the PHY chip of IP packet, the PHY chip and information
Processing module is connected.
The PHY chip is RTL8201.
Between voice acquisition module and speech recognition module, it is additionally provided with noise reduction module, the noise reduction module includes the
One capacitor, the second capacitor, third capacitor, the 4th capacitor, first resistor, 3rd resistor, specific structure are as follows: the of first capacitor
First input end of two ends as noise reduction module connects the signal end of sound pick-up, the first input end connection first of noise reduction module
The first end of resistance, the second end of first resistor pass through third capacitor, the 4th capacity earth respectively；The first end of first capacitor with
The 9th foot of N32926U1DN is connected；
Second input terminal of the second end of second capacitor as noise reduction module, the second input terminal connection of the noise reduction module
The first input end of tri- resistance of ID, the second end ground connection of 3rd resistor, the 10th of the first end of the second capacitor and N32926U1DN the
Foot is connected.
The utility model has the beneficial effects that:
1) automatic early-warning participates in without artificial, does not need to trigger manually；
2) it effectively prevents from prejudging, can automatically overcome exception-triggered caused by the external world.
Detailed description of the invention
Fig. 1 is system construction drawing；
Fig. 2 is circuit block diagram；
Fig. 3 is message processing module peripheral circuit diagram；
Fig. 4 is the circuit diagram of noise reduction module；
Fig. 5,6 be interface circuit circuit diagram.
Specific embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, now compareing Detailed description of the invention
Specific embodiment of the present utility model.
As shown in figures 1 to 6, the utility model relates to a kind of campus speech recognition alarms to seek help terminal, and the terminal is also wrapped
It includes: voice acquisition module, speech recognition module, video acquisition module, keyword storage unit, message processing module, alarm mould
Block, voice acquisition module are connected with speech recognition module, and speech recognition module is connected with keyword storage unit, keyword storage
Unit, video acquisition module are connected with message processing module；Speech recognition module is connected with alarm module.
For being acquired to the voice data in installation environment, the voice acquisition module is set the voice acquisition module
It is set to microphone or sound pick-up.
The video acquisition module includes LD3320, and the output end of the sound pick-up is connected to by first capacitor
The 9th foot of LD3320, as the input of voice recognition chip, the LD3320 and the message processing module pass through spi bus
It is connected, the message processing module is ARM chip.
The ARM chip is chosen as N32926U1DN.
Video acquisition module includes camera module, and camera is digital image pickup unit, and output signal is CMOS format, institute
Stating video acquisition module is OV2640 camera module.
Keyword storage unit is flash.
Campus speech recognition alarm terminal of seeking help further includes transmitting the PHY chip of IP packet, the PHY chip and information
Processing module is connected.
The PHY chip is RTL8201.
Between voice acquisition module and speech recognition module, it is additionally provided with noise reduction module, the noise reduction module includes the
One capacitor, the second capacitor, third capacitor, the 4th capacitor, first resistor, 3rd resistor, specific structure are as follows: the of first capacitor
First input end of two ends as noise reduction module connects the signal end of sound pick-up, the first input end connection first of noise reduction module
The first end of resistance, the second end of first resistor pass through third capacitor, the 4th capacity earth respectively；The first end of first capacitor with
The 9th foot of N32926U1DN is connected；
Second input terminal of the second end of second capacitor as noise reduction module, the second input terminal connection of the noise reduction module
The first input end of tri- resistance of ID, the second end ground connection of 3rd resistor, the 10th of the first end of the second capacitor and N32926U1DN the
Foot is connected.
Specifically, voice acquisition module: for being acquired to the voice data in installation environment；Video acquisition module:
For being acquired to the video data in installation environment；Speech recognition module: for the voice messaging in acquisition module into
Row identification；And it is compared and analyzed with the crucial voice messaging stored in keyword storage unit；Message processing module: being used for will
The output signal of speech recognition module is converted into rs 232 serial interface signal, for driving alarm module；And alarm signal is passed through this simultaneously
Ground network is uploaded to monitoring center；And simultaneously the data of video acquisition module are subjected to coding compression after pass through local network all the way
It is uploaded to monitoring center, is locally carrying out circulation storage all the way；Alarm module: it is the discovery that according to speech recognition module comparison result
It is no to occur meeting as a result, if so, triggering audio alarm does not trigger audio alarm if nothing；Voice acquisition module and speech recognition mould
Block connection, speech recognition module are connect with message processing module, and video acquisition module is connect with message processing module, information processing
Module is connect with alarm module.
Voice acquisition module includes pickup module, voice de-noising module, speech enhan-cement module.
Voice de-noising includes noise filtering unit, and noise filtering unit is connected in pickup module, and speech enhan-cement module is located at
After noise reduction module, the expansion of volume is carried out to effective source of students for pickup module.
Speech recognition module includes the extraction unit for input voice information being analyzed and being extracted language feature.
It stores the reference unit of keyword, keyword reference unit is compared with the voice messaging in extraction unit
Characteristic matching unit.
Video acquisition module includes camera module, and camera is digital image pickup unit, and output signal is CMOS format；Letter
Breath processing module includes the ARM chip by the digital signal encoding compression post package of video acquisition module input at IP packet, and
Transmit the PHY chip of IP packet；Serial port chip including issuing alarm command；Including locally-stored unit.
Specifically, be directed to speech recognition module, speech recognition module include for extracting its voice data frequency spectrum of speaker,
It is compared with the key words sound spectrum of storage, is to be characterized voice data verification；Increase voice number in speech recognition module
According to redundancy unit, the reliability of data analysis can be further improved.Identification process is extracted with keyword speech recognition technology
Keyword feature, i.e. Dynamic Recognition process, according to recognition result as phonetic feature label.Increase in specific identification process and knows
Other number, to prevent false triggering alarm.Specific implementation is to compare in multi collect voice messaging with keyword, when appearance 3 times or more
Triggering alarm is carried out when comparison successfully with keyword again, effectively reduces alarm false triggering in this way；It is further logical
It crosses video and does auxiliary reference, when occurring aggressive behavior in video, alarm can also be triggered；In order to improve speech intelligibility, according to
Live call scenarios set voice messaging noise reduction process, the noise reduction module be located at voice acquisition module and speech recognition module it
Between.Further, voice de-noising module includes filter unit, nonlinear scattering noise filtering unit, time-frequency statistics separative unit；
Ambient noise is effective filtered out using non-scatter noise filtering unit, using time-frequency statistics separative unit (microphone array when
Frequency statistical iteration separating treatment) residual noise is further removed, to improve the effect for eliminating noise, improve the clear of voice
Degree.Further, further include speech enhan-cement module: the module is set between voice acquisition module and speech recognition module,
Realize volume enhancing.Currently, the speech recognition module pronounces just for standard Chinese, foreign language or minority language pronunciation can
To do keyword typing speech recognition module in a manner of phonetic by partials, the function of speech trigger alarm also may be implemented.
It should be noted that for simple description, therefore, it is stated as a systems for each embodiment of the method above-mentioned
The combination of actions of column, but those skilled in the art should understand that, the application is not limited by the described action sequence, because
For according to the application, certain some step be can be performed in other orders or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, related movement and unit not necessarily this Shen
It please be necessary.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in some embodiment
Part, reference can be made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, ROM, RAM etc..
Above disclosures are merely preferred embodiments of the utility model, the utility model cannot be limited with this certainly
Interest field, therefore equivalent variations made according to the claim of the utility model still fall within the scope of the utility model.
Claims (9)
- A kind of terminal 1. campus speech recognition alarm is sought help, which is characterized in that the terminal further include: voice acquisition module, language Sound identification module, video acquisition module, keyword storage unit, message processing module, alarm module, voice acquisition module and language Sound identification module be connected, speech recognition module is connected with keyword storage unit, keyword storage unit, video acquisition module and Message processing module is connected；Speech recognition module is connected with alarm module.
- A kind of terminal 2. speech recognition alarm in campus as described in claim 1 is sought help, which is characterized in that the voice collecting mould For block for being acquired to the voice data in installation environment, the voice acquisition module is set as microphone or sound pick-up.
- A kind of terminal 3. speech recognition alarm in campus as described in claim 1 is sought help, which is characterized in that the voice collecting mould Block includes LD3320, further includes sound pick-up, and the output end of the sound pick-up is connected to the 9th foot of LD3320 by first capacitor, As the input of voice recognition chip, the LD3320 is connected with the message processing module by spi bus, at the information Reason module is ARM chip.
- The terminal 4. a kind of speech recognition alarm in campus as claimed in claim 3 is sought help, which is characterized in that the ARM chip can It is selected as N32926U1DN.
- A kind of terminal 5. speech recognition alarm in campus as described in claim 1 is sought help, which is characterized in that video acquisition module packet Camera module is included, camera is digital image pickup unit, and output signal is CMOS format, and the video acquisition module is OV2640 Camera module.
- A kind of terminal 6. speech recognition alarm in campus as described in claim 1 is sought help, which is characterized in that keyword storage unit For flash.
- The terminal 7. a kind of speech recognition alarm in campus as described in claim 1 is sought help, which is characterized in that the campus voice is known The terminal that Bao Jing not seek help further includes transmitting the PHY chip of IP packet, and the PHY chip is connected with message processing module.
- The terminal 8. a kind of campus speech recognition as claimed in claim 7 alarm is sought help, which is characterized in that the PHY chip is RTL8201。
- The terminal 9. a kind of speech recognition alarm in campus as claimed in claim 4 is sought help, which is characterized in that in voice acquisition module Between speech recognition module, it is additionally provided with noise reduction module, the noise reduction module includes first capacitor, the second capacitor, third electricity Hold, the 4th capacitor, first resistor, 3rd resistor, specific structure are as follows: the second end of first capacitor as noise reduction module first Input terminal connects the signal end of sound pick-up, and the first input end of noise reduction module connects the first end of first resistor, first resistor Second end passes through third capacitor, the 4th capacity earth respectively；The first end of first capacitor is connected with the 9th foot of N32926U1DN；Second input terminal of the second end of second capacitor as noise reduction module, the second input terminal connection ID three of the noise reduction module The first input end of resistance, the second end ground connection of 3rd resistor, the first end and the 10th foot phase of N32926U1DN of the second capacitor Even.
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| CN201821517733.2U CN209118466U (en) | 2018-09-18 | 2018-09-18 | A kind of campus speech recognition alarm is sought help terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109064709A (en) * | 2018-09-18 | 2018-12-21 | 四川川博士科技发展有限公司 | A kind of campus speech recognition alarm is sought help terminal and alarm method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109064709A (en) * | 2018-09-18 | 2018-12-21 | 四川川博士科技发展有限公司 | A kind of campus speech recognition alarm is sought help terminal and alarm method |
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