CN106725517A - A kind of digital audiometer and its diagnostic method - Google Patents
A kind of digital audiometer and its diagnostic method Download PDFInfo
- Publication number
- CN106725517A CN106725517A CN201710015825.4A CN201710015825A CN106725517A CN 106725517 A CN106725517 A CN 106725517A CN 201710015825 A CN201710015825 A CN 201710015825A CN 106725517 A CN106725517 A CN 106725517A
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- circuit
- hearing
- audiometer
- conductance
- test
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/12—Audiometering
- A61B5/121—Audiometering evaluating hearing capacity
- A61B5/123—Audiometering evaluating hearing capacity subjective methods
Abstract
The present invention proposes digital audiometer and its diagnostic method, belong to audiometer field, including housing, housing is provided with indicator unit and push-button unit, enclosure interior is provided with PCB, PCB is provided with power circuit, master chip circuit, USB sound source signals input circuit, microphone input circuit, conductance earphone output circuit and osophone output circuit, and indicator unit and push-button unit are directly connected with the master chip circuit.The present invention is attached by USB modes and apparatus such as computer, and audiometer is controlled by the software installed on computers, complete corresponding test job, the gain of parameter dependence test requirement that tested personnel can be exported by display, accompanied in the whole journey without staff and participated in, testing efficiency can be effectively improved, shorten the testing time, and various test signals can be produced, have the advantages that compact, be convenient for carrying, testing precision it is high.
Description
Technical field
The invention belongs to audiometer field, especially a kind of digital audiometer and its diagnostic method.
Background technology
Audiometer is the commonly used instruments in field such as clinical audition diagnosis, hearing protection and hearing rehabilitation.Audiometer is
The individual instrument to various frequency sensitivity sizes is determined, by compared with normal hearing, so that it may it is determined that tested hearing loss
Situation.Audiometer on psychology is generally all referring to pure tone audiometer.When using, instrument main part automatically provides grow from weak to strong each
Kind of frequency stimulation, auto-changing frequency is tested the earphone for putting on closing sound insulation during audiometry, when sound is heard, i.e. button, instrument
Forster audibility curve can directly be drawn according to tested reaction.Hearing is medically checked commonly using audiometer and hearing is measured
Loss, the degree of hearing loss is weighed with the decibels less than normal threshold.Audiometrist can evaluate listening for people
Feel.Therefore, it is essential instrument in hearing protection work.
Presently disclosed audiometer mostly structure is relatively easy, and function is also relatively single, and medical care is passed through in test process
Human users' audiometer, provides the audio-frequency test signal of different stage successively, and test result is recorded, after being completed
Patient's deafness is obtained by the analysis to test result again.This mode medical personnel need to accompany test in the whole journey,
Test impression etc. cannot clearly be expressed causes testing result inaccurate.
The content of the invention
The present invention provides a kind of digital audiometer and its diagnostic method, compact, is convenient for carrying, and with preferably survey
Examination accuracy.
The present invention specifically adopts the following technical scheme that realization：
A kind of digital audiometer, including housing, the housing are provided with indicator unit and push-button unit, in the housing
Portion is provided with PCB, and the PCB is provided with power circuit, master chip circuit, USB sound source signals input circuit, wheat
Gram wind enters circuit, conductance earphone output circuit and osophone output circuit, the master chip circuit respectively with power circuit,
USB sound source signals input circuit, microphone enter the connection of circuit, conductance earphone output circuit and osophone output circuit, described
Indicator unit and push-button unit are directly connected with the master chip circuit.
Preferably, the indicator unit includes test indicator lamp and output switching indicator lamp.
Preferably, the push-button unit includes test button, signal output switching key and confirmation signal input button.
Preferably, the conductance earphone output circuit and osophone output circuit are provided with receiver J-Horner, the housing
Slotted eye corresponding with the receiver J-Horner is provided with, the receiver J-Horner is connected with external equipment.
Preferably, the external equipment includes the gentle guide lug machine of osophone, the osophone and the bone conduction ear
The receiver J-Horner connection of machine output circuit, the conductance earphone is connected with the receiver J-Horner of the conductance earphone output circuit.
Preferably, master chip circuit is additionally provided with the USB interface being electrically connected, the shell in the PCB
Body is provided with slotted eye corresponding with the USB interface.
A kind of diagnostic method of audiometer, comprises the following steps：
1) audiometer is connected with external headphones, microphone, computer or printer；
2) conductance hearing detection；
3) KL detection；
4) hearing evaluation；
5) audiometric data is preserved；
6) printing hearing report.
Preferably, the step 2) conductance hearing detection tested using lifting and lowering method, and specific test process is：Selection
The ear to be detected (left ear or auris dextra), to subject it is an audible to sound (the normal person of hearing since 30dB~40dB,
Hearing loss person is since 60dB~70dB), if subject is reactionless, intensity is increased until subject does by spacing of 20dB
Go out reaction, then with 10dB be spacing reduce intensity until subject it is reactionless, then with 5dB as spacing be stepped up intensity until
Subject hears, then reduces 10dB, repeats.
Preferably, when the step 2) exist hearing intersect when, also sheltered including non-test ear, specific covering method
For：It is determined that needing the frequency sheltered, initial masking level is sufficiently large, it is sufficient to make threshold value that significant change to occur, but can not it is excessive with
Exempt to cause excessively to shelter, initial masking level once adds 30dB noises in non-test ear conductance threshold value, now subject such as remains to
Given tonal signal, or only slight upper shifting 5-10dB are heard, illustrates that cross hearing influence is small, relevant with central masking, this listens
Threshold is that to test ear be really hearing, and after giving initial masking level patient can not hear tonal signal, and it is strong to increase pure tone with mono- grade of 5dB
Degree as above moves 15dB, it is necessary to be analysed whether to need further to shelter until hearing, needs further to shelter more than 20dB,
Must further be sheltered more than 25dB, untill subject's tonal signal is constant or slightly above moves.
A kind of digital audiometer and its diagnostic method that the present invention is provided, its advantage is：By USB modes and electricity
The equipment such as brain are attached, and audiometer is controlled by the software installed on computers, complete corresponding test job,
The gain of parameter dependence test requirement that tested personnel can be exported by display, accompanies in the whole journey and joins without staff
With, testing efficiency can be effectively improved, shorten the testing time, and various test signals can be produced, with compact, conveniently take
Band, testing precision advantage high.
Brief description of the drawings
Fig. 1 is the circuit block diagram of number audiometer of the invention；
Fig. 2 is the circuit theory diagrams of number audiometer of the invention；
Fig. 3 is the diagnostic method flow chart of number audiometer of the invention.
Specific embodiment
To further illustrate each embodiment, the present invention is provided with accompanying drawing.These accompanying drawings are the invention discloses one of content
Point, it is mainly used to illustrate embodiment, and the associated description of specification can be coordinated to explain the operation principles of embodiment.Coordinate ginseng
These contents are examined, those of ordinary skill in the art will be understood that other possible implementation methods and advantages of the present invention.In figure
Component be not necessarily to scale, and similar element numbers are conventionally used to indicate similar component.
In conjunction with the drawings and specific embodiments, the present invention is further described.
A kind of digital audiometer that this implementation is provided, including housing, housing are provided with indicator unit and push-button unit, shell
Internal portion is provided with PCB.As shown in figure 1, PCB is provided with power circuit, master chip circuit, USB sound source signals
Input circuit, microphone enter circuit, conductance earphone output circuit and osophone output circuit, master chip circuit respectively with power supply
Circuit, USB sound source signals input circuit, microphone enter the connection of circuit, conductance earphone output circuit and osophone output circuit,
Conductance earphone output circuit and osophone output circuit are provided with receiver J-Horner, are provided with corresponding with the receiver J-Horner on housing
Slotted eye, osophone is connected with the receiver J-Horner of osophone output circuit, conductance earphone and conductance earphone output circuit
Receiver J-Horner is connected.Indicator unit and push-button unit are directly connected with master chip circuit.Wherein indicator unit includes test
Indicator lamp and output switching indicator lamp, push-button unit include that test button, signal output switching key and confirmation signal input are pressed
Key.The USB interface being electrically connected is additionally provided with master chip circuit, housing is provided with slotted eye corresponding with USB interface.
In the present embodiment, main control chip selects STC12C5A60S2 single-chip microcomputers, as shown in Fig. 2 test indicator lamp and output
Switching indicator lamp is connected with PA0 the and PA4 pins of STC12C5A60S2 single-chip microcomputers respectively, and test button, signal output switching are pressed
Key and confirmation signal input button are connected with PB1, PB3, PB2 and PB0 pin of STC12C5A60S2 single-chip microcomputers respectively.
As shown in figure 3, the audiometer of the present embodiment is when in use, it is attached with computer, needs to install on computers
Corresponding operation software, and be connected with the external equipment such as conductance earphone, osophone and microphone.It is laggard that equipment connection is finished
Hearing detection is led in promoting the circulation of qi, and conductance hearing detection is tested using lifting and lowering method, that is, the H-W methods for improveing, also known as " 10 liter of 5 method of drop ".
Specifically test process is：The selection ear to be detected (left ear or auris dextra), to an audible sound for arriving of subject, (hearing is normal
Since 30dB~40dB, hearing loss person is since 60dB~70dB for person), if subject is reactionless, with 20dB as spacing
Increase intensity until subject makes a response, then with 10dB as spacing reduction intensity until subject is reactionless, then be with 5dB
Spacing is stepped up intensity until subject hears, then reduces 10dB, repeats.In uphill process, subject at least one
More than half voice signal makes the minimum strength of correct response, i.e., made just at least 2 times in a certain intensity 3 times is to Sound stimulat
Really reaction, threshold value is listened by this intensity positioning.Left and right ear method of testing is identical.
In test process, it is understood that there may be cross hearing, in order to obtain the test real hearing of ear it is necessary to non-test ear
Sheltered, that is, prevent it from hearing test signal in non-test ear addition noise.The purpose sheltered be exactly in order to go unless
The participation of ear is tested, obtains testing the true threshold value of ear.If being not added with sheltering in the case where there is cross hearing, resulting listens
Power has been really the shadow curve of ear hearing (non-test ear), and the shape of shadow curve is completely consistent with good ear curve.Specifically cover
Covering method is：It is determined that needing the frequency sheltered, initial masking level is sufficiently large, it is sufficient to make threshold value that significant change to occur, but can not
It is excessive in order to avoid cause excessively to shelter, initial masking level in non-test ear conductance threshold value once plus 30dB noises, now subject
As remained to hear given tonal signal, or only slight upper shifting 5-10dB, illustrate that cross hearing influence is small, have with central masking
Close, this threshold of audibility is that to test ear be really hearing, and after giving initial masking level patient can not hear tonal signal, with mono- grade of increasing of 5dB
Plus pure tone intensity is until hearing, 15dB as above is moved, it is necessary to be analysed whether to need further to shelter, needed into one more than 20dB
Step is sheltered, and must further be sheltered more than 25dB, untill subject's tonal signal is constant or slightly above moves.The method is saved
It is time, more practical when testing children.
Followed by KL detection.In 500Hz, 1K Hz, 2K Hz and 4K Hz, this four Frequency points are all surveyed
After examination, hearing is estimated, assessment result can be preserved and printed.
The audiometer of the present embodiment, frequency range is in 125Hz~12500KHz, 1 ± 5dB of attenuation steps, conductance output model
It is 0~120dB to enclose, and bone conduction output area is 0~80dB, and masking by noise adjustable range is 0~100dB, and noise type is white noise
Or powder is made an uproar, uncomfortable output area is 0~120dB, and apparent size is 25cm*20cm*6.4cm, compact, is conveniently taken
Band.
Although specifically showing and describing the present invention with reference to preferred embodiment, those skilled in the art should be bright
In vain, do not departing from the spirit and scope of the present invention that appended claims are limited, in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (9)
1. a kind of digital audiometer, it is characterised in that including housing, the housing is provided with indicator unit and push-button unit,
The enclosure interior is provided with PCB, and the PCB is provided with power circuit, master chip circuit, USB sound source signals
Input circuit, microphone input circuit, conductance earphone output circuit and osophone output circuit, the master chip circuit difference
Exported with power circuit, USB sound source signals input circuit, microphone input circuit, conductance earphone output circuit and osophone
Circuit is connected, and the indicator unit and push-button unit are directly connected with the master chip circuit.
2. a kind of digital audiometer according to claim 1, it is characterised in that：The indicator unit includes that test is indicated
Lamp and output switching indicator lamp.
3. a kind of digital audiometer according to claim 1, it is characterised in that：The push-button unit include test button,
Signal output switching key and confirmation signal input button.
4. a kind of digital audiometer according to claim 1, it is characterised in that：The conductance earphone output circuit and bone conduction
Earphone output circuit is provided with receiver J-Horner, and the housing is provided with slotted eye corresponding with the receiver J-Horner, the receiver J-Horner
It is connected with external equipment.
5. a kind of digital audiometer according to claim 4, it is characterised in that：The external equipment include osophone and
Conductance earphone, the osophone is connected with the receiver J-Horner of the osophone output circuit, the conductance earphone with it is described
The receiver J-Horner connection of conductance earphone output circuit.
6. a kind of digital audiometer according to claim 1, it is characterised in that：Master chip circuit in the PCB
The USB interface being electrically connected is additionally provided with, the housing is provided with slotted eye corresponding with the USB interface.
7. a kind of diagnostic method of audiometer, it is characterised in that comprise the following steps：
1) audiometer is connected with external headphones, microphone, computer or printer；
2) conductance hearing detection；
3) KL detection；
4) hearing evaluation；
5) audiometric data is preserved；
6) printing hearing report.
8. the diagnostic method of a kind of audiometer according to claim 7, it is characterised in that：The step 2) inspection of conductance hearing
Survey is tested using lifting and lowering method, and specific test process is：The selection ear to be detected (left ear or auris dextra), to subject one
Audible sound (since 30dB~40dB, hearing loss person is since 60dB~70dB for the normal person of hearing), if tested
Person is reactionless, and increasing intensity as spacing with 20dB makes a response until subject, then with 10dB be spacing reduce intensity until
Subject is reactionless, then is stepped up intensity until subject hears by spacing of 5dB, then reduces 10dB, repeats.
9. the diagnostic method of a kind of audiometer according to claim 7, it is characterised in that：When the step 2) there is hearing
During intersection, also sheltered including non-test ear, specific covering method is：It is determined that needing the frequency sheltered, initial masking level is enough
Greatly, it is sufficient to make threshold value that significant change to occur, but can not be excessive in order to avoid causing excessively to shelter, initial masking level is in non-test ear conductance
Threshold value is last to add 30dB noises, and now subject says as remained to hear given tonal signal, or only slight upper shifting 5-10dB
The influence of bright cross hearing is small, relevant with central masking, and this threshold of audibility is that test ear is really hearing, gives patient after initial masking level
Tonal signal can not be heard, mono- grade increases pure tone intensity until hearing with 5dB, as above move 15dB, it is necessary to be analysed whether to need
Further to shelter, need further to shelter more than 20dB, must further be sheltered more than 25dB, until subject's tonal signal
Untill being moved on constant or slight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710015825.4A CN106725517A (en) | 2017-01-10 | 2017-01-10 | A kind of digital audiometer and its diagnostic method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710015825.4A CN106725517A (en) | 2017-01-10 | 2017-01-10 | A kind of digital audiometer and its diagnostic method |
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| Publication Number | Publication Date |
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| CN106725517A true CN106725517A (en) | 2017-05-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112426150A (en) * | 2020-12-04 | 2021-03-02 | 湖南省医疗器械检验检测所 | Multifunctional audiometer and corresponding method for fitting hearing aid |
| CN114176579A (en) * | 2021-11-17 | 2022-03-15 | 杭州爱思维仪器有限公司 | Automatic hearing test system and test method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203609423U (en) * | 2013-10-28 | 2014-05-28 | 厦门新声科技有限公司 | Audiometer |
-
2017
- 2017-01-10 CN CN201710015825.4A patent/CN106725517A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203609423U (en) * | 2013-10-28 | 2014-05-28 | 厦门新声科技有限公司 | Audiometer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112426150A (en) * | 2020-12-04 | 2021-03-02 | 湖南省医疗器械检验检测所 | Multifunctional audiometer and corresponding method for fitting hearing aid |
| CN114176579A (en) * | 2021-11-17 | 2022-03-15 | 杭州爱思维仪器有限公司 | Automatic hearing test system and test method |
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