CN206136296U - Otoacoustic emission transmission detection device based on mobile intelligent equipment audio interface - Google Patents
Otoacoustic emission transmission detection device based on mobile intelligent equipment audio interface Download PDFInfo
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- CN206136296U CN206136296U CN201621135065.8U CN201621135065U CN206136296U CN 206136296 U CN206136296 U CN 206136296U CN 201621135065 U CN201621135065 U CN 201621135065U CN 206136296 U CN206136296 U CN 206136296U
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Abstract
The utility model discloses an otoacoustic emission transmission detection device based on mobile intelligent equipment audio interface, including otoacoustic emission probe and have the mobile intelligent equipment of OMTP standard interface jack, the otoacoustic emission probe is including speaker, microphone, leading preprocessing circuit and OMTP standard interface plug, the audio output of microphone is connected with leading preprocessing circuit's input, leading preprocessing circuit's the output and the audio input end of speaker all are connected with OMTP standard interface plug, OMTP standard interface plug can dismantle with OMTP standard interface jack and be connected. The utility model discloses an otoacoustic emission transmission detection device adopts mobile intelligent equipment as the host computer, consequently the utility model discloses an otoacoustic emission transmission detection device have smallly and be convenient for hand -carry the advantage of use. The utility model relates to a but an otoacoustic emission transmission detection device based on mobile intelligent equipment audio interface wide application is in various otoacoustic emission transmission clinical practice.
Description
Technical field
This utility model is related to otoacoustic emission equipment, more particularly to a kind of based on intelligent movable equipment audio interface
Otoacoustic emission device.
Background technology
Human ear receive one stimulate acoustical signal in short-term after, the faint sound from internal ear can be recorded, and this
Cochlear out hair cell is resulted from, listen tympanum and the periosteum of Jing middle ear are conducted to the audio signal of external auditory meatus, are referred to as otoacoustic emission
（Otoacoustic emissions, OAEs）.For described otoacoustic emission, it is the process that a kind of cochlea actively consumes energy,
The activity of Cochlear out hair cell is reacted, has been one of objective indicator of audition peripheral-system function, therefore, it is widely used in
In the plurality of medical clinical practices such as newborn hearing screening, cochlear function inspection, hearing loss monitoring.And facing in otoacoustic emission
In bed application, otoacoustic emission equipment is then one of requisite equipment.However, for otoacoustic emission inspection conventional at present
Measurement equipment, its be all using computer system as host computer realizing data storage and signal processing function, therefore, it is not
Have the shortcomings that bulky with can avoiding and be not easy to carry with and use.
Utility model content
In order to solve above-mentioned technical problem, the purpose of this utility model is to provide a kind of small volume, portable is based on
The otoacoustic emission device of intelligent movable equipment audio interface.
The technical scheme that this utility model is adopted is：A kind of otoacoustic emission based on intelligent movable equipment audio interface is examined
Device, including otoacoustic emission probe and the intelligent movable equipment with OMTP standard interface jacks are surveyed, the otoacoustic emission probe includes raising
Sound device, mike, preposition pretreatment circuit and OMTP standard interface plugs, the audio output of the mike is pre- with preposition
The input connection of process circuit, the outfan of the preposition pretreatment circuit and the audio input end of speaker are marked with OMTP
Quasi- interface plug connection, the OMTP standard interfaces plug detachably connects with the OMTP standard interface jacks in intelligent movable equipment
Connect.
Further, the intelligent movable equipment includes processor, and the processor is connected to audio codec, deposits
Reservoir and display screen, the OMTP standard interfaces jack is connected with audio codec.
Further, the preposition pretreatment circuit include one-level amplifying circuit, low-pass filter circuit, high-pass filtering circuit with
And second amplifying circuit, the audio output of the mike passes sequentially through one-level amplifying circuit, low-pass filter circuit and height
Bandpass filter circuit is connected with the input of second amplifying circuit, and outfan and the OMTP standard interfaces of the second amplifying circuit are inserted
Head connection.
Further, the one-level amplifying circuit includes first resistor, second resistance and the first amplifier chip, described the
One end of one resistance is connected respectively with the negative input end of the first amplifier chip and one end of second resistance, the first resistor
The other end is grounded, and the other end of the second resistance is connected with the outfan of the first amplifier chip；
The audio output of the mike is connected with the positive input terminal of the first amplifier chip, the first amplifier core
The outfan of piece is connected with the input of low-pass filter circuit.
Further, the low-pass filter circuit includes 3rd resistor, the 4th resistance, the first electric capacity, the second electric capacity, the 5th electric
Resistance, the 6th resistance and the second amplifier chip；
The outfan of the first amplifier chip is connected with one end of 3rd resistor, the other end point of the 3rd resistor
It is not connected with one end of the second electric capacity and one end of the 4th resistance, the other end of the 4th resistance is respectively with the one of the first electric capacity
The positive input terminal of end and the second amplifier chip connects, the other end of first electric capacity ground connection, second electric capacity it is another
End and the other end of the 6th resistance are connected with the outfan of the second amplifier chip, and one end of the 5th resistance is respectively with the
One end connection of the negative input end of two amplifier chips and the 6th resistance, the other end ground connection of the 5th resistance；
The outfan of the second amplifier chip is connected with the input of high-pass filtering circuit.
Further, the high-pass filtering circuit includes the 3rd electric capacity, the 4th electric capacity, the 7th resistance, the 8th resistance, the 9th electric
Resistance, the tenth resistance and the 3rd amplifier chip；
The outfan of second amplifier chip is connected with one end of the 3rd electric capacity, the other end point of the 3rd electric capacity
It is not connected with one end of the 4th electric capacity and one end of the tenth resistance, the other end of the 4th electric capacity is respectively with the one of the 7th resistance
The positive input terminal of end and the 3rd amplifier chip connects, the other end of the 7th resistance ground connection, the tenth resistance it is another
End and the other end of the 9th resistance are connected with the outfan of the 3rd amplifier chip, and one end of the 8th resistance is respectively with the
The negative input end connection of one end of nine resistance and the 3rd amplifier chip, the other end ground connection of the 8th resistance；
The outfan of the 3rd amplifier chip is connected with the input of second amplifying circuit.
Further, the speaker includes left channel loudspeaker and right channel loudspeaker.
Further, the intelligent movable equipment includes intelligent mobile mobile phone and/or panel computer.
The beneficial effects of the utility model are：Otoacoustic emission device of the present utility model includes otoacoustic emission probe and band
There is the intelligent movable equipment of OMTP standard interface jacks, and described otoacoustic emission probe can be by OMTP standard interfaces plug and shifting
OMTP standard interface jacks in dynamic smart machine are detachably connected.Thus can obtain, otoacoustic emission dress of the present utility model
It is to be used as host computer using intelligent movable equipment to put, and so compared to traditional otoacoustic emission equipment, this practicality is new
The otoacoustic emission device of type has the advantages that small volume, saving placing space and is easy to carry with to use.
Description of the drawings
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is that a kind of structure of the otoacoustic emission device based on intelligent movable equipment audio interface of this utility model is shown
It is intended to；
Fig. 2 is that a kind of otoacoustic emission device one based on intelligent movable equipment audio interface of this utility model is concrete real
Apply a structural representation；
Fig. 3 is that otoacoustic emission is visited in a kind of otoacoustic emission device based on intelligent movable equipment audio interface of this utility model
One specific embodiment structural representation of head；
Fig. 4 is preposition pre- in a kind of otoacoustic emission device based on intelligent movable equipment audio interface of this utility model
One specific embodiment electronic circuit schematic of process circuit.
1st, left audio connecting line；2nd, right audio channel connecting line；3rd, microphone audio connecting line；4th, grounding connection
Line；5th, left channel loudspeaker；6th, right channel loudspeaker；7th, mike.
Specific embodiment
As shown in figure 1, a kind of otoacoustic emission device based on intelligent movable equipment audio interface, including otoacoustic emission probe
And the intelligent movable equipment with OMTP standard interface jacks, the otoacoustic emission is popped one's head in includes speaker, mike, preposition pre- place
Reason circuit and OMTP standard interface plugs, the audio output of the mike connects with the input of preposition pretreatment circuit
Connect, the outfan of the preposition pretreatment circuit and the audio input end of speaker are connected with OMTP standard interface plugs, institute
State OMTP standard interfaces plug to be detachably connected with the OMTP standard interface jacks in intelligent movable equipment.
The course of work of above-mentioned otoacoustic emission device is specially：The intelligent movable equipment passes through OMTP standard interfaces
Plug will stimulate acoustical signal to send to speaker carries out stimulation sound broadcasting, and mike sends the otoacoustic signal for collecting to front
Put pretreatment circuit to be amplified after Filtering Processing, sent to intelligent movable equipment by OMTP standard interface plugs.Thus
Can obtain, because otoacoustic emission device of the present utility model is used as host computer using intelligent movable equipment, therefore, it has
Small volume, save placing space, be easy to carry with the advantages of using, being so applied to and promoting has great meaning
Justice.In addition, otoacoustic emission device of the present utility model also has the advantages that simple structure, is easily achieved.
It is further used as preferred embodiment, the intelligent movable equipment includes processor, the processor connects respectively
Audio codec, memorizer and display screen are connected to, the OMTP standard interfaces jack is connected with audio codec.It is preferred that
Ground, the memorizer is SD card, and the SD card is used to store the stimulation sound data of conventional stimulus modelity, including stimulation sound, thorn
The parameters such as sharp number of times, stimulus intensity and tested auditory meatus.
It is further used as preferred embodiment, the speaker includes left channel loudspeaker and right channel loudspeaker.
It is further used as preferred embodiment, the intelligent movable equipment includes intelligent mobile mobile phone and/or flat board electricity
Brain.
The specific embodiment of this utility model one
As shown in Figures 2 and 3, a kind of otoacoustic emission device based on intelligent movable equipment audio interface, its is concrete
Pop one's head in including otoacoustic emission and the intelligent movable equipment with OMTP standard interface jacks；
Otoacoustic emission probe include left channel loudspeaker 5, right channel loudspeaker 6, mike 7, preposition pretreatment circuit with
And OMTP standard interface plugs, the audio output of the mike 7 is connected with the input of preposition pretreatment circuit, it is described before
Put pretreatment circuit outfan, the audio input end of left channel loudspeaker 5 and right channel loudspeaker 6 audio input end with
OMTP standard interfaces plug connects；
The intelligent movable equipment includes processor, audio codec, memorizer and display screen, the processor point
It is not connected with audio codec, memorizer and display screen, the OMTP standard interfaces jack is connected with audio codec；
The OMTP standard interfaces plug is detachably connected with OMTP standard interface jacks.
It is the standard interface plug of earphone more conventional at present for above-mentioned OMTP standard interface plugs,
4 road signals are which specify, from left to right respectively left channel signals, right-channel signals, ground signal and microphone signal, because
This, can obtain as shown in Figure 3, and OMTP standard interfaces plug is defeated with the audio frequency of left channel loudspeaker 5 by left audio connecting line 1
Enter end to connect, OMTP standard interfaces plug is connected by right audio channel connecting line 2 with the audio input end of right channel loudspeaker 6,
OMTP standard interfaces plug by grounding connection line 4 respectively with left channel loudspeaker 5, right channel loudspeaker 6 and preposition pretreatment
Circuit, the earth terminal connection of three, OMTP standard interfaces plug is by microphone audio connecting line 3 and preposition pretreatment circuit
Outfan connects.
For above-mentioned preposition pretreatment circuit, as shown in figure 4, it includes one-level amplifying circuit, low-pass filter circuit, height
Bandpass filter circuit and second amplifying circuit, the audio output of the mike 7 passes sequentially through one-level amplifying circuit, low pass filtered
Wave circuit and high-pass filtering circuit are connected with the input of second amplifying circuit, the outfan of the second amplifying circuit with
OMTP standard interfaces plug connects.Thus can obtain, the effect of the preposition pretreatment circuit is to very faint otoacoustic signal
Two-stage amplification and Filtering Processing are carried out, so that the analogue signal of output reaches the requirement of analog digital conversion and filters out beyond passband
Noise signal.And because otoacoustic signal is very faint, reaction meansigma methodss are more in -5～20dB SPL, signal effective band is
400Hz to 8000Hz, accordingly, it would be desirable to carry out the bandpass filtering and 100000 times of signal of 400-8000Hz scopes to otoacoustic signal
Amplify.
For the one-level amplifying circuit in above-mentioned preposition pretreatment circuit, low-pass filter circuit, high-pass filtering circuit and
Second amplifying circuit, their preferred implementation is as follows.
（1）, one-level amplifying circuit
The one-level amplifying circuit includes first resistor R1, second resistance R2 and the first amplifier chip U1A, described the
One end of one resistance R1 is connected respectively with the negative input end of the first amplifier chip U1A and one end of second resistance R2, and described
The other end ground connection of one resistance R1, the other end of second resistance R2 is connected with the outfan of the first amplifier chip U1A；
The audio output of the mike 7 is connected with the positive input terminal of the first amplifier chip U1A, and described first amplifies
The outfan of device chip U1A is connected with the input of low-pass filter circuit.The amplification of the one-level amplifying circuit is 100.
Preferably, the first described amplifier chip U1A is realized using the INA333 amplifier chips of TI companies.
（2）, low-pass filter circuit
The low-pass filter circuit include 3rd resistor R3, the 4th resistance R4, the first electric capacity C1, the second electric capacity C2, the 5th
Resistance R5, the 6th resistance R6 and the second amplifier chip U2A；
The outfan of the first amplifier chip U1A is connected with one end of 3rd resistor R3,3rd resistor R3
The other end is connected respectively with one end of the second electric capacity C2 and one end of the 4th resistance R4, the other end difference of the 4th resistance R4
It is connected with one end of the first electric capacity C1 and the positive input terminal of the second amplifier chip U2A, another termination of the first electric capacity C1
Ground；
The other end of the second electric capacity C2 and the other end of the 6th resistance R6 with the output of the second amplifier chip U2A
End connection, one end of the 5th resistance negative input end respectively with the second amplifier chip U2A and one end of the 6th resistance R6
Connection, the other end ground connection of the 5th resistance R5；
The outfan of the second amplifier chip U2A is connected with the input of high-pass filtering circuit.The low-pass filtering
The cut-off frequency of circuit is about 8000Hz.Preferably, the second amplifier chip U2A adopts the OPA227 amplifiers of TI companies
Chip is realizing.
（3）, high-pass filtering circuit
The high-pass filtering circuit include the 3rd electric capacity C3, the 4th electric capacity C4, the 7th resistance R7, the 8th resistance R8, the 9th
Resistance R9, the tenth resistance R10 and the 3rd amplifier chip U2B；
The outfan of the second amplifier chip U2A is connected with one end of the 3rd electric capacity C3, the 3rd electric capacity C3's
The other end is connected respectively with one end of the 4th electric capacity C4 and one end of the tenth resistance R10, the other end point of the 4th electric capacity C4
It is not connected with one end of the 7th resistance R7 and the positive input terminal of the 3rd amplifier chip U2B, the other end of the 7th resistance R7
Ground connection；
The other end of the tenth resistance R10 and the other end of the 9th resistance R9 are defeated with the 3rd amplifier chip U2B
Go out end connection, one end of the 8th resistance R8 is negative defeated with one end of the 9th resistance R9 and the 3rd amplifier chip U2B respectively
Enter end connection, the other end ground connection of the 8th resistance R8；
The outfan of the 3rd amplifier chip U2B is connected with the input of second amplifying circuit.The high-pass filtering
The cut-off frequency of circuit is about 400Hz.Preferably, the 3rd amplifier chip U2B adopts the OPA227 amplifiers of TI companies
Chip is realizing.
For the cascade structure of above-mentioned low-pass filter circuit and high-pass filtering circuit, it then constitutes cut-off frequency and is
The band filter of 400Hz to 8000Hz.
（4）, second amplifying circuit
The second amplifying circuit includes the 11st resistance R11, the 12nd resistance R12 and the 4th amplifier chip U1B,
And the structure of second amplifying circuit is identical with the structure of one-level amplifying circuit.The amplification of the second amplifying circuit is
1000.Preferably, the 4th described amplifier chip U1B is realized using the INA333 amplifier chips of TI companies.
Preferably for described audio codec, it possesses at least two analogue audio frequency output channels and at least one
Individual audio input channel, wherein built-in DAC digital to analog converters and 24 ADC analog-digital converters, sample rate is up to 96000Hz.
Also, described audio codec passes through I2C and I2S buses carry out data communication, including downlink and uplink two with processor
Path；In downlink, processor will stimulate acoustical signal to transmit to audio codec, then in audio codec
DAC digital to analog converters by it is digitized stimulation acoustical signal be converted into after analog electrical signal by OMTP standard interface plugs export to
Speaker carries out stimulation sound broadcasting；In uplink, audio codec is received by Mike by OMTP standard interface plugs
The otoacoustic signal that wind 7 is collected, and the ADC analog-digital converters in audio codec change the otoacoustic signal simulated
Into digital signal, processor is then uploaded to.
Preferably, the speaker is Microspeaker, and specifically, described speaker can be preferentially public from Knowles
The ED-23162-000 coil-moving speakers of department are realizing.
Preferably, the mike is mini microphone, and specifically, the mike can preferentially select Knowles companies
TM-23568-C36 electret microphones realizing.
It is more than that preferable enforcement of the present utility model is illustrated, but this utility model is created and is not limited to institute
State embodiment, those of ordinary skill in the art can also make a variety of etc. on the premise of without prejudice to this utility model spirit
With deformation or replacement, the deformation or replacement of these equivalents are all contained in the application claim limited range.
Claims (8)
1. a kind of otoacoustic emission device based on intelligent movable equipment audio interface, it is characterised in that：Including otoacoustic emission probe
And the intelligent movable equipment with OMTP standard interface jacks, the otoacoustic emission is popped one's head in includes speaker, mike, preposition pre- place
Reason circuit and OMTP standard interface plugs, the audio output of the mike connects with the input of preposition pretreatment circuit
Connect, the outfan of the preposition pretreatment circuit and the audio input end of speaker are connected with OMTP standard interface plugs, institute
State OMTP standard interfaces plug to be detachably connected with the OMTP standard interface jacks in intelligent movable equipment.
2. a kind of otoacoustic emission device based on intelligent movable equipment audio interface according to claim 1, its feature
It is：The intelligent movable equipment includes processor, and the processor is connected to audio codec, memorizer and shows
Display screen, the OMTP standard interfaces jack is connected with audio codec.
3. a kind of otoacoustic emission device based on intelligent movable equipment audio interface according to claim 1 or claim 2, it is special
Levy and be：The preposition pretreatment circuit is put including one-level amplifying circuit, low-pass filter circuit, high-pass filtering circuit and two grades
Big circuit, the audio output of the mike passes sequentially through one-level amplifying circuit, low-pass filter circuit and high-pass filtering electricity
Road is connected with the input of second amplifying circuit, and the outfan of the second amplifying circuit is connected with OMTP standard interface plugs.
4. a kind of otoacoustic emission device based on intelligent movable equipment audio interface according to claim 3, its feature
It is：The one-level amplifying circuit include first resistor, second resistance and the first amplifier chip, the one of the first resistor
End is connected respectively with the negative input end of the first amplifier chip and one end of second resistance, another termination of the first resistor
Ground, the other end of the second resistance is connected with the outfan of the first amplifier chip；
The audio output of the mike is connected with the positive input terminal of the first amplifier chip, first amplifier chip
Outfan is connected with the input of low-pass filter circuit.
5. a kind of otoacoustic emission device based on intelligent movable equipment audio interface according to claim 4, its feature
It is：The low-pass filter circuit includes 3rd resistor, the 4th resistance, the first electric capacity, the second electric capacity, the 5th resistance, the 6th electric
Resistance and the second amplifier chip；
The outfan of the first amplifier chip is connected with one end of 3rd resistor, the other end of the 3rd resistor respectively with
One end connection of one end of the second electric capacity and the 4th resistance, the other end of the 4th resistance respectively with one end of the first electric capacity and
Second amplifier chip positive input terminal connection, first electric capacity the other end ground connection, the other end of second electric capacity and
The other end of the 6th resistance is connected with the outfan of the second amplifier chip, and one end of the 5th resistance is put respectively with second
The negative input end of big device chip and one end connection of the 6th resistance, the other end ground connection of the 5th resistance；
The outfan of the second amplifier chip is connected with the input of high-pass filtering circuit.
6. a kind of otoacoustic emission device based on intelligent movable equipment audio interface according to claim 5, its feature
It is：The high-pass filtering circuit includes the 3rd electric capacity, the 4th electric capacity, the 7th resistance, the 8th resistance, the 9th resistance, the tenth electric
Resistance and the 3rd amplifier chip；
The outfan of second amplifier chip is connected with one end of the 3rd electric capacity, the other end of the 3rd electric capacity respectively with
One end connection of one end of the 4th electric capacity and the tenth resistance, the other end of the 4th electric capacity respectively with one end of the 7th resistance and
3rd amplifier chip positive input terminal connection, the 7th resistance the other end ground connection, the other end of the tenth resistance and
The other end of the 9th resistance is connected with the outfan of the 3rd amplifier chip, and one end of the 8th resistance is electric with the 9th respectively
The negative input end connection of one end of resistance and the 3rd amplifier chip, the other end ground connection of the 8th resistance；
The outfan of the 3rd amplifier chip is connected with the input of second amplifying circuit.
7. a kind of otoacoustic emission device based on intelligent movable equipment audio interface according to claim 1, its feature
It is：The speaker includes left channel loudspeaker and right channel loudspeaker.
8. a kind of otoacoustic emission device based on intelligent movable equipment audio interface according to claim 1, its feature
It is：The intelligent movable equipment includes intelligent mobile mobile phone and/or panel computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621135065.8U CN206136296U (en) | 2016-10-18 | 2016-10-18 | Otoacoustic emission transmission detection device based on mobile intelligent equipment audio interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621135065.8U CN206136296U (en) | 2016-10-18 | 2016-10-18 | Otoacoustic emission transmission detection device based on mobile intelligent equipment audio interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206136296U true CN206136296U (en) | 2017-04-26 |
Family
ID=58574514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621135065.8U Expired - Fee Related CN206136296U (en) | 2016-10-18 | 2016-10-18 | Otoacoustic emission transmission detection device based on mobile intelligent equipment audio interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206136296U (en) |
-
2016
- 2016-10-18 CN CN201621135065.8U patent/CN206136296U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |