CN109029692B - Wearable patient-specific susceptibility assesses early warning system - Google Patents
Wearable patient-specific susceptibility assesses early warning system Download PDFInfo
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- CN109029692B CN109029692B CN201810760529.1A CN201810760529A CN109029692B CN 109029692 B CN109029692 B CN 109029692B CN 201810760529 A CN201810760529 A CN 201810760529A CN 109029692 B CN109029692 B CN 109029692B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
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Abstract
The present invention relates to a kind of wearable patient-specific susceptibilities to assess early warning system, which includes: noise data acquisition early warning front-end module and operating environment noise characteristic analysis two parts of evaluation module；Noise data acquisition early warning front-end module can be set to epaulet formula and be worn on operating personnel；Operating environment noise characteristic analysis evaluation module is integrated in tablet computer, carries out data connection by bluetooth with noise data acquisition early warning front-end module.It realizes and facilitates wearing, concealment is high, and environmental suitability is strong, and operation is independent, reliability and durability technical effect.
Description
Technical field
The present invention relates to noise evaluation field, in particular to a kind of wearable patient-specific susceptibility assesses early warning system.
Background technique
Noise is that a kind of people are not intended to the sound wanted.It often affects the mood and health of people, interferes people
Work, study and normal life.Long-term work is under high-noise environment and does not take any effective safeguard procedures, must
It will lead to permanent irredeemable hearing loss, even result in serious occupational deafness.It is existing all occupation both at home and abroad
Property deafness is classified as important one of occupational disease.Very noisy, can also nervous system to human body, angiocarpy other than it can lead to deafness
System, digestive system and Reproductive Performance etc., have a adverse impact.
In general, using control methods of projects or personal protective measures, the practical noise control received of people is existed
85dB (A) is below (by connecing based on time of making an uproar on per 8 hours working days), and noise is on influence caused by hearing with regard to very little.It is same with this
When, noise will also weaken the otherwise influence of health significantly.Therefore, occupational noise harm control often always with listen
The nurse that tries hard to keep is closely connected together.Related noise criteria regulation, since the 1970s, the relatively advanced state of industry
Family, has tended to be perfect and has obtained strict implement.
In actual operation before taking control methods of projects or personal protective measures, a bulk noise is carried out for personnel
Exposure assessment is an important process for judging whether to need to carry out staff noise protection.Noise testing is with evaluation
The basis of man-made noise preventing and controlling, and the difficult point of work.Traditional man-made noise measurement mostly use for production environment and
There is many when measurement evaluation complex environment is for staff's health effect in the noise measuring method of fixed place and time of noise source
Human body.In recent years, become for the individual noise testing of staff with evaluation using patient-specific susceptibility assessment source of early warning
A kind of new trend, gradually by the concern of each side.
But using patient-specific susceptibility assessment source of early warning, there are following technical problems at present: firstly, in hardware
On have the following problems: 1) patient-specific susceptibility measuring device generally require by microphone be fixed to staff's ear nearby carry out
Noise is acquired, the instrument and equipments such as noise treatment and data-storage system are connected by wired connection type and noise gathering device
It connects, whole system can not realize movement at any time, cause inconvenient to use；2) key is cumbersome in equipment, easy to operate by mistake；3)
The design of two bodies or the exposed outside of acoustic element, it is easy to damage；Second, the aspect on software, noise majority is in production environment
The situation at nonstationary noise, noise source and scene is more complicated, for complicated noise source, current patient-specific susceptibility measurement
There is also certain measurement accuracy problems for device；2) existing equipment does not support bluetooth real-time communication, Wu Fayuan on software
Journey operates equipment.
Accordingly, it is desirable to provide a kind of facilitate wearing, concealment is high, and environmental suitability is strong, and operation is independent, reliability and durability, right
Source of early warning is assessed in the patient-specific susceptibility that all kinds of noise situations all have measurement accuracy.
Summary of the invention
The technical problems to be solved by the present invention are: 1) whole system can not realize movement at any time, cause using not
It is convenient；2) key is cumbersome in equipment, easy to operate by mistake；3) design of two bodies or the exposed outside of acoustic element, it is easy to damage；4) for
The measurement accuracy problem of complicated noise source；5) bluetooth real-time communication is not supported, it can not remote operation apparatus.
The technical scheme adopted by the invention to solve the technical problem is that:
A kind of wearable patient-specific susceptibility assessment early warning system, the system include: noise data acquisition early warning front end
Module and operating environment noise characteristic analyze two parts of evaluation module；Noise data acquisition early warning front-end module can be set to
Epaulet formula is worn on operating personnel；Operating environment noise characteristic analysis evaluation module is integrated in tablet computer, with noise data
It acquires early warning front-end module and data connection is carried out by bluetooth.
Further, noise data acquisition early warning front-end module includes: microphone, ADC acquisition module, main control chip, SD
Storage card, bluetooth communication module, warning device, battery.
Further, microphone uses free field measuring microphone.
Further, ADC acquisition component acquires microphone voltage signal analog quantity and is converted into digital signal, and will be above-mentioned
Digital signal is filtered.
Further, operating environment noise characteristic analysis evaluation module includes: bluetooth communication component, data storage, number
According to processing component, standard database, multilevel iudge component.
Further, bluetooth communication component realizes the company that early warning front-end module is acquired with noise data by Bluetooth communication
Connect, by will synchronize the data transmission being stored on SD memory into data storage and by multilevel iudge component judge
Bulk noise exposure be above standard corresponding standard in database when, transmit signals to noise data acquisition early warning front-end module
Warning device on, alarm to start warning device.
Further, data storage is used to store or cache the survey sent from noise data acquisition early warning front-end module
Measure data.
Further, standard database is for storing a variety of sanitary standards, so as to be used for compared with measurement data,
It sees if fall out noise and adds up threshold value.
The patient-specific susceptibility appraisal procedure that early warning system uses is assessed based on the wearable patient-specific susceptibility,
It is characterized by: this method comprises:
The first step detects the corresponding voltage value of noise and vibration near staff ear by microphone；
Second step passes through ADC acquisition module, converts digital signal for the voltage value, and be filtered；
Third step, by the digital signal after the filtering processing, be stored in SD memory, and by Bluetooth communications element and,
Data storage component is sent by the digital signal；
4th step is handled the data by data handling component；
5th step, by comparing determination component, for that will be directed to stable state noise component obtained in the 4th step, unstable state be made an uproar
Cent amount and pulse noise component carry out defending for the various components stored in sound pressure level, loudness and frequency and standard database respectively
Raw standard, is compared, when the noise of single component add up situation or component it is compound noise it is accumulative be more than sanitary standard when,
Multilevel iudge component sends enabling signal to the warning device that noise data acquires early warning front-end module by bluetooth communication component,
Starting warning device is alarmed.
4th step further includes:
S1. white noise part is removed from the noise data；
S2. the noise data after white noise will be removed and carry out starting point and end point judgement, and according to above-mentioned beginning electricity and
Noise data after removing white noise is divided into multistage by end point；
S3. stable state noise component, unstable state noise component and the pulse noise component in each section of noise are separated；
S4. for stable state noise component, unstable state noise component and pulse noise component carry out respectively sound pressure level, loudness and
The assessment and analysis of frequency.
Wearable patient-specific susceptibility provided by the invention assesses early warning system, has the advantages that
1) can quickly, in real time, accurately carry out noise analysis, effectively assess operating personnel Noise Exposure grade, mention
Hearing protection for meeting multi-national standard is instructed.
2) this equipment can be in the Noise Exposure and hearing impairment prediction of first time assessment related personnel, by establishing respectively
Noise Exposure database under kind of operating environment effectively instructs hearing protection behavior, comprehensive to improve operating environment, so improve and
Improvement personnel's hearing protection state.
3) working condition for passing through Bluetooth control equipment saves complicated button and the control of external microphone, reduces mistake
The risks such as operation, external disturbance and external force damage.Equipment is powered using battery, is not necessarily to external power supply, and whole low power dissipation design has
Effect extends cruise duration.
4) equipment volume is small and exquisite, convenient to wear, and concealment is high, does not interfere personnel's operation, greatly improves equipment just
The property taken.
5) portability height, environmental suitability ensure by force the diversity that equipment uses, and can cover common lab, outside
The plurality of application scenes such as field experiment, plant maintenance space and real-time live.
6) core component is designed using moistureproof design and anti-electromagnetic interference, so that it is guaranteed that facility environment is adaptable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that wearable patient-specific susceptibility provided by the invention assesses early warning system.
Fig. 2 is the hardware system structure figure that wearable patient-specific susceptibility provided by the invention assesses early warning system.
Specific embodiment
The present invention is described in more detail below with reference to accompanying drawings, which show the preferred embodiment of the present invention,
It should be understood that those skilled in the art can modify invention described herein and still realize beneficial effects of the present invention.Cause
This, following description should be understood as the widely known of those skilled in the art, and be not intended as limitation of the present invention.
For clarity, not describing whole features of practical embodiments.In the following description, it is not described in detail well known function
And structure, because they can make the present invention chaotic due to unnecessary details.It will be understood that opening in any practical embodiments
In hair, it is necessary to make a large amount of implementation details to realize the specific objective of developer.
To be clearer and more comprehensible the purpose of the present invention, feature, a specific embodiment of the invention is made with reference to the accompanying drawing
Further instruction.It should be noted that attached drawing is all made of very simplified form and using non-accurate ratio, only with one
Purpose that is convenient, clearly aiding in illustrating the embodiment of the present invention.
Wearable patient-specific susceptibility provided by the invention assesses early warning system, comprising:
Noise data acquires early warning front-end module and operating environment noise characteristic analyzes two parts of evaluation module.
Wherein, noise data acquisition early warning front-end module can be set to epaulet formula and be worn on operating personnel, built-in charging
Battery, the service life of battery and memory size are sufficient, can execute various continuous dislocation noise testings, by comparing various health marks
Standard carries out early warning to patient-specific susceptibility dosage.
Operating environment noise characteristic analysis evaluation module is integrated in tablet computer, acquires early warning front end mould with noise data
Block carries out data connection by bluetooth.Major function is the data control that early warning front-end module is acquired to noise data, data receipts
Collection and further operating environment noise characteristic analysis assessment.
Early warning front-end module is acquired to noise data below and operating environment noise characteristic analyzes two parts of evaluation module
Concrete composition and function be described in detail.
Noise data acquires early warning front-end module
As shown in Figure 1, noise data acquisition early warning front-end module includes: microphone unit, ADC acquisition module, master control core
Piece, SD card storage, bluetooth communication module, alarm module, battery module.
Microphone unit is connected to main control chip by ADC acquisition module, receives noise coherent signal for main control chip.
Main control chip is also bidirectionally coupled to bluetooth communication module and SD card storage, and bluetooth communication mould is sent and received for main control chip
Data in block or storage or reading SD card storage.In addition, main control chip is also connect with alarm module, for certain
Under the conditions of triggering alarm module alarm；Main control chip is also attached with battery module, must for providing to main control chip
The electric energy wanted.
Wherein, microphone unit uses free field measuring microphone, and the microphone is by induction acoustic wave vibrations, and by the shake
Turn turns to voltage signal.The microphone is not necessarily to polarizing voltage, and meets IEC61072 standard.Preferably, the frequency of the microphone
Rate range is 20HZ-20KHZ, and Typical sensitivity: 10mv/pa improves the sensitivity of the induction of equipment using above-mentioned microphone.
ADC acquisition module major function is acquisition microphone voltage signal analog quantity and is converted into digital signal.Program is set
Meter uses anti-aliasing filter mode, and uses 24 delta-sigma mode ADC, fixes 64 times of over-samplings, and 51.1KhZ sample rate is divided
Analyse bandwidth 20kHZ；Subtracting steepness is more than -300dB/oct, and has the background noise less than 0.08mVrms@± 10V range.Using
Above-mentioned ADC acquisition component can be filtered in measurement end, reduce the data volume of wireless blue tooth transmission, thus improve
The working efficiency of equipment entirety.
Main control chip preferably uses STM32 chip, which belongs to 32 ARM microcontrollers, and kernel is Cortex-
M3, dominant frequency 72M.Main function is: 1) being used to read the data of ADC acquisition module, and calculate and saved to SD in real time and stored
Card；2) driving bluetooth communication module sends data.
SD card storage is convenient for subsequent calculating and assessment for saving original time and amplitude data.Preferably, storage is held
It measures and 16G or 32G may be selected.
Bluetooth communication component realizes the connection of equipment and tablet computer by Bluetooth communication, and data, which synchronize, is stored in SD card
On, while real-time Transmission can be carried out, to realize the function that data are observed in real time.
Alarm module is preferably LED light, carries out different colours and sudden strain of a muscle according to different working modes and test number
Bright alarm, to realize classifying alarm function.Under the operating mode of normal acquisition, the green of LED display interval flashing, more than setting
It is shown in red when threshold value.
Battery module can be nickel-metal hydride battery or other compact batteries, and design cruise duration of whole system is hour.
Operating environment noise characteristic analyzes evaluation module
It includes: bluetooth communication component, data storage, data processing group that the operating environment noise characteristic, which analyzes evaluation module,
Part, standard database, multilevel iudge component and user interface.
Wherein, bluetooth communication component realizes the connection that early warning front-end module is acquired with noise data by Bluetooth communication, leads to
The data transmission being stored on SD memory will be synchronized by, which crossing, judges that individual is made an uproar into data storage and by multilevel iudge component
Acoustic exposure situation be above standard corresponding standard in database when, transmit signals to noise data acquisition early warning front-end module report
On alarm device, alarm to start warning device.
Data storage is used to store or cache the measurement data sent from noise data acquisition early warning front-end module.
Data handling component is used to handle the noise data for storing or caching in data storage, the processing packet
It includes:
S1. white noise part is removed from the noise data；
S2. the noise data after white noise will be removed and carry out starting point and end point judgement, and according to above-mentioned beginning electricity and
Noise data after removing white noise is divided into multistage by end point；
S3. stable state noise component, unstable state noise component and the pulse noise component in each section of noise are separated；
S4. for stable state noise component, unstable state noise component and pulse noise component carry out respectively sound pressure level, loudness and
The assessment and analysis of frequency.
Standard database is for storing a variety of sanitary standards, so as to for judging whether compared with measurement data
Add up threshold value beyond noise.
Multilevel iudge component, for stable state noise component, unstable state noise component and arteries and veins will to be directed to obtained in S4 step
The sanitary standard that noise component carries out the various components stored in sound pressure level, loudness and frequency and standard database respectively is rushed, into
Row compares, when the noise of single component add up situation or the compound noise of component is accumulative be more than sanitary standard when, multilevel iudge
Component sends enabling signal, starting alarm to the warning device that noise data acquires early warning front-end module by bluetooth communication component
Device is alarmed.
It is illustrated in figure 2 the hardware system structure schematic diagram of above-mentioned wearable patient-specific susceptibility assessment early warning system.
Wherein, it operating environment noise characteristic analysis evaluation module and its constitutes component and is installed in operating terminal, which can be with
It is PC machine, intelligent and portable equipment or other existing executable computer equipments.The analysis assessment of operating environment noise characteristic
The installation in operating terminal of module and its each module and set-up mode be computer module as known in the art installation and
Details are not described herein again for setting method.The user interface in evaluation module is analyzed by operating environment noise characteristic come to wearable
Patient-specific susceptibility assessment early warning system is operated.
Operating terminal bluetooth communication component can with the working condition of the beginning of remote control equipment, stopping, compared to
The more complicated push-button design of existing wearable patient-specific susceptibility assessment early warning system, it is provided in the present invention wearable
Formula patient-specific susceptibility assessment early warning system eliminates complicated button and the control of external microphone, reduces maloperation.Noise
Data acquisition early warning front-end module production is independent wearable device, which has shell, makes an uproar for protecting
The internal component of sound data acquisition early warning front-end module.The shell can have certain protection for plastics, resin, hard fabric etc.
The material of property.Preferably, the protection of multilayer three-proofing coating is also added in the hull outside.Also increase in the enclosure interior of microphone and sets
The shielded layer for preventing electromagnetic interference is set, which can be shelter-clad, for preventing external interference and external force
Damage.
Microphone unit walks to be connected to ADC acquisition module and main control chip by signal, and the preferably connection type can be with
Make the crystal oscillator of microphone unit and main control chip close as far as possible, so that reducing cabling extends increased risk of interferences.It is preferred that
The capacitor filtering device of high-quality can be arranged in ground between microphone unit and ADC acquisition module or main control chip, thus
Further avoid the interference of noise signal.
Preferably, the circuit trace in noise data acquisition early warning front-end module can use difference cabling, snakelike cabling
Etc. a variety of cabling forms.The cabling of diversified forms can further increase the distance between analog signal and digital signal, reduce
Crosstalk.
Analog signal is transmitted in the signal wire of microphone unit, and the signal wire of ADC acquisition module transmits digital signal.By
There are signal interference between analog signal and the digital signal of high frequency, the present invention passes through the microphone list that will transmit analog signal
The signal wire of member has carried out ground with the signal wire of the ACD acquisition module of transmission high-frequency digital signal and has separated, and believes to increase high speed
Spacing number with analog signal, reduces the crosstalk between disparate modules signal.And provide ground separation ground level, be by
It carries out applying copper in the white space of circuit to form, and then greater area of ground level is provided, improve circuit connection just
The effect of benefit and signal shielding.
Patient-specific susceptibility appraisal procedure based on wearable patient-specific susceptibility assessment early warning system
Early warning system is assessed based on wearable patient-specific susceptibility provided by the present application, individual below is performed and makes an uproar
Acoustic exposure appraisal procedure, method includes the following steps:
The first step detects the corresponding voltage value of noise and vibration near staff ear by microphone；
Second step passes through ADC acquisition module, converts digital signal for the voltage value, and be filtered；
Third step, by the digital signal after the filtering processing, be stored in SD memory, and by Bluetooth communications element and,
Data storage component is sent by the digital signal；
4th step is handled the data by data handling component, and specific steps include:
S1. white noise part is removed from the noise data；
S2. the noise data after white noise will be removed and carry out starting point and end point judgement, and according to above-mentioned beginning electricity and
Noise data after removing white noise is divided into multistage by end point；
S3. stable state noise component, unstable state noise component and the pulse noise component in each section of noise are separated；
Specifically, by the way of separating the noise component in each section and being fitted using matlab graph data, by will be every
One section of noise signal is converted to the waveform signal with certain time length, then by the shape factor of figure, peak-peak,
Gradient parameter carries out the fitting of data and the separation of stable state noise component, unstable state noise component and pulse noise component.It is logical
Aforesaid way is crossed, stable state noise component, unstable state noise component and pulse noise component in noise can be accurately separated, mention
The high accuracy of noise assessment.
S4. for stable state noise component, unstable state noise component and pulse noise component carry out respectively sound pressure level, loudness and
The assessment and analysis of frequency；
5th step, by comparing determination component, for that will be directed to stable state noise component obtained in the 4th step, unstable state be made an uproar
Cent amount and pulse noise component carry out defending for the various components stored in sound pressure level, loudness and frequency and standard database respectively
Raw standard, is compared, when the noise of single component add up situation or component it is compound noise it is accumulative be more than sanitary standard when,
Multilevel iudge component sends enabling signal to the warning device that noise data acquires early warning front-end module by bluetooth communication component,
Starting warning device is alarmed.
It is more accurately true by removal white noise, post noise exposure segmentation by above-mentioned patient-specific susceptibility appraisal procedure
The exposure duration of noise and the boundary of intensity are determined.In addition, it is more that noise is divided into stable state noise, unstable state noise and pulse noise
A component, since different types of noise damages difference for caused by staff, and there are different ability to bear models
It encloses, therefore divides different components and make post noise exposure assessment more accurate objective.
Wearable patient-specific susceptibility provided by the invention assesses early warning system, 1) can have the advantages that
Quickly, in real time, accurately carry out noise analysis, effectively assess operating personnel Noise Exposure grade, provide and meet multi-national standard
Hearing protection guidance；2) this equipment can lead in the Noise Exposure and hearing impairment prediction of first time assessment related personnel
The Noise Exposure database established under various operating environments is crossed, hearing protection behavior is effectively instructed, it is comprehensive to improve operating environment, into
And improve and improve personnel's hearing protection state；3) by the working condition of Bluetooth control equipment, complicated button and outer is saved
Microphone control is set, the risks such as maloperation, external disturbance and external force damage are reduced.Equipment is powered using battery, without external
Power supply, whole low power dissipation design effectively extend cruise duration；4) equipment volume is small and exquisite, convenient to wear, and concealment is high, does not interfere people
Member's operation, greatly improves the portability of equipment；5) portability height, environmental suitability ensure by force the multiplicity that equipment uses
Property, the plurality of application scenes such as common lab, external field experiment, plant maintenance space and real-time live can be covered；6) core
Component is designed using moistureproof design and anti-electromagnetic interference, so that it is guaranteed that facility environment is adaptable.
In the description of the present invention, it is to be understood that, term " on ", "lower", " vertical ", "top", "bottom", "inner",
The orientation or positional relationship of the instructions such as "outside", "front", "rear", "left", "right" is to be based on the orientation or positional relationship shown in the drawings,
Be merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (6)
1. a kind of individual engine noise exposure assessment method based on wearable individual engine noise exposure assessment early warning system,
It is characterized by:
The wearable individual engine noise exposure assessment early warning system that this method is based on includes: before noise data acquires early warning
End module and operating environment noise characteristic analyze two parts of evaluation module；Noise data acquisition early warning front-end module is set as shoulder
Chapter formula is worn on operating personnel；Operating environment noise characteristic analysis evaluation module is integrated in tablet computer, adopts with noise data
Collect early warning front-end module and data connection is carried out by bluetooth；Noise data acquisition early warning front-end module includes: that microphone, ADC are adopted
Collect module, main control chip, SD storage card, bluetooth communication module, warning device, battery；The analysis assessment of operating environment noise characteristic
Module includes: bluetooth communication module, data storage, data handling component, standard database, multilevel iudge component；
Wherein, analog signal is transmitted in microphone signal line, the signal wire of ADC acquisition module transmits digital signal；Microphone
The signal wire of signal wire and ADC acquisition module carries out ground separation, is provided greatly by carrying out applying copper in the white space of circuit
Ground level is used in the ground separation of area；
It is described individual engine noise exposure assessment method include:
The first step detects the corresponding voltage value of noise and vibration near staff ear by microphone；
Second step passes through ADC acquisition module, converts digital signal for the voltage value, and be filtered；
Third step, by the digital signal after the filtering processing, be stored in SD storage card, and pass through bluetooth communication module number letter
Number it is sent to data storage；
4th step is handled the data by data handling component；
4th step further includes:
S1. white noise part is removed from the noise data；
S2. the noise data after removal white noise is subjected to starting point and end point judgement, and according to above-mentioned starting point and end
Noise data after removing white noise is divided into multistage by point；
S3. stable state noise component, unstable state noise component and the pulse noise component in each section of noise are separated,
Wherein, the noise component in each section is separated by the way of the fitting of matlab graph data, by believing each section of noise
Number be converted to the waveform signal with certain time length, then by the shape factor of figure, peak-peak, gradient parameter into
The fitting of row data, and carry out the separation of stable state noise component, unstable state noise component and pulse noise component；
S4. sound pressure level, loudness and frequency are carried out respectively for stable state noise component, unstable state noise component and pulse noise component
Assessment and analysis；
5th step, by comparing determination component, for stable state noise component, unstable state noise point will to be directed to obtained in the 4th step
The health that amount and pulse noise component carry out the various components stored in sound pressure level, loudness and frequency and standard database respectively is marked
Standard is compared, when the noise of single component add up situation or the compound noise of component is accumulative be more than sanitary standard when, compare
Determination component sends enabling signal, starting to the warning device that noise data acquires early warning front-end module by bluetooth communication module
Warning device is alarmed.
2. individual engine noise exposure assessment method according to claim 1, it is characterised in that: wearable individual engineering
The microphone that Noise Exposure assesses early warning system uses free field measuring microphone.
3. individual engine noise exposure assessment method according to claim 1, it is characterised in that: wearable individual engineering
The ADC acquisition module acquisition microphone voltage signal analog quantity of Noise Exposure assessment early warning system is simultaneously converted into digital signal, and
Above-mentioned digital signal is filtered.
4. individual engine noise exposure assessment method according to claim 1, it is characterised in that: bluetooth communication module passes through
Bluetooth communication realizes the connection with noise data acquisition early warning front-end module, by that will synchronize the data being stored on SD storage card
It is transmitted in data storage and multilevel iudge component is judged that patient-specific susceptibility situation is above standard in database accordingly
Standard when, transmit signals to noise data acquisition early warning front-end module warning device on, thus start warning device progress
Alarm.
5. individual engine noise exposure assessment method according to claim 4, it is characterised in that: data storage is for depositing
Storage caches the measurement data sent from noise data acquisition early warning front-end module.
6. individual engine noise exposure assessment method according to claim 4, standard database is for storing a variety of health
Standard, so as to add up threshold value for compared with measurement data, seeing if fall out noise.
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| CN110220593A (en) * | 2019-07-15 | 2019-09-10 | 西安邮电大学 | A kind of sound abnormality detecting system based on deep learning |
| CN110657884A (en) * | 2019-09-27 | 2020-01-07 | 歌尔股份有限公司 | Wearable device and noise detection method and device thereof |
| CN112146520B (en) * | 2020-08-11 | 2022-05-27 | 南京理工大学 | Method and system for calculating hearing threshold transfer of sound wave weapon after being hit |
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