CN203988071U - Simulated environment hearing aid fitting instrument - Google Patents
Simulated environment hearing aid fitting instrument Download PDFInfo
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- CN203988071U CN203988071U CN201420018843.XU CN201420018843U CN203988071U CN 203988071 U CN203988071 U CN 203988071U CN 201420018843 U CN201420018843 U CN 201420018843U CN 203988071 U CN203988071 U CN 203988071U
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Abstract
This utility model relates to simulated environment hearing aid fitting instrument, there is the test environment of making true, generation source reaches spatialization, test feature accurately, comprise audio-frequency module, electrode, electroencephalogramsignal signal acquisition module, main circuit board, single-chip microcomputer and computer, described single-chip microcomputer is arranged on main circuit board, described electrode, eeg signal acquisition mould, main circuit board, computer connects successively, described audio-frequency module produces tone source and simulated environment noise, described electroencephalogramsignal signal acquisition module gathers amplification to EEG signals, described computer is stored EEG signals, show in real time and the current potential that brings out detecting is carried out to mapping.
Description
Technical field
This utility model relates to a kind of hearing aid fitting instrument, relates in particular to a kind of simulated environment hearing aid fitting instrument.
Background technology
Sonifer is to help deafness patient to improve the instrument of audition, in the time joining sonifer, need to test deafness patient, thereby allot the sonifer that deafness patient is suitable, at present, the deafness patient audiometry method that generally applies to each medical institutions is soundproof room real ear audiometry, allow patient in soundproof room back to pronunciation equipment, test teacher of the joining and adjust loudness under fixed frequency, patient is button signal in the time hearing sound, and each frequency repeats successively, completes threshold audiogram and draws.But the method exists obviously not enough: generation source does not reach spatialization; Test environment does not meet application request, the basic noiseless of soundproof room, check result often with exist the daily life deviation of noise very large, tradition is tested and is joined the larger subjective uncertainty of process existence, people's thinking variation can cause deviation diagnosis to a certain extent, cause final test result not accurate enough, make the sonifer allotted not ideal enough.
Summary of the invention
Technical problem to be solved in the utility model is: provide one to make that test environment is true, generation source reaches spatialization, tests simulated environment hearing aid fitting instrument accurately.
For solving the problems of the technologies described above, this utility model is by the following technical solutions: simulated environment hearing aid fitting instrument, comprise audio-frequency module, electrode, electroencephalogramsignal signal acquisition module, main circuit board, single-chip microcomputer and computer, described single-chip microcomputer is arranged on main circuit board, described electrode, eeg signal acquisition mould, main circuit board, computer connects successively, described audio-frequency module produces tone source and simulated environment noise, described electroencephalogramsignal signal acquisition module gathers amplification to EEG signals, described computer is stored EEG signals, show in real time and the current potential that brings out detecting is carried out to mapping.
The beneficial effect of the simulated environment hearing aid fitting instrument that this utility model provides is: audio-frequency module sends tone source, stimulate acoustic nerve by threshold intensity pure tone, producing excited rear induced brain wave changes, change with the corresponding brain wave that brings out current potential and appearance, by the electrode as receptor, EEG signals is transferred to electroencephalogramsignal signal acquisition module, after the collection of electroencephalogramsignal signal acquisition module, be transferred in the single-chip microcomputer on main circuit board, after single-chip microcomputer conversion process, be transferred on computer, machine is stored EEG signals as calculated, show in real time and the current potential that brings out detecting is carried out to mapping, as the foundation of objective judgement audition, thereby realizing real considerable testing joins, eliminating tradition tests and joins patient in process and judge according to the subjective feeling of oneself, and send simulated environment noise by audio-frequency module, obtain the white noise being close with real life, realize environmental simulation, make to test that to join process more accurate, the tone source sending and simulated environment noise are stereo, realize generation source and reach spatialization, make test result more accurate, thereby allot deafness patient, suitable group is listened device.
Simulated environment hearing aid fitting instrument this utility model being provided below in conjunction with drawings and Examples is further described in detail.
Brief description of the drawings
Fig. 1 is the structural representation of the simulated environment hearing aid fitting instrument that provides of this utility model.
Fig. 2 is the circuit block diagram of Fig. 1 sound intermediate frequency module.
Fig. 3 is the circuit block diagram of electroencephalogramsignal signal acquisition module in Fig. 1.
Detailed description of the invention
As Fig. 1, Fig. 2, shown in Fig. 3, the embodiment of the simulated environment hearing aid fitting instrument that this utility model provides, comprises audio-frequency module 1, electrode 2, electroencephalogramsignal signal acquisition module 3, main circuit board 4, single-chip microcomputer 5 and computer 6, described single-chip microcomputer 5 is arranged on main circuit board 4, described electrode 2, eeg signal acquisition mould 3, main circuit board 4, computer 6 connects successively, and described audio-frequency module 1 produces tone source and simulated environment noise, and described electroencephalogramsignal signal acquisition module 3 gathers amplification to EEG signals, detects pretreated effect to reach, and described computer 6 is stored EEG signals, show in real time and the current potential that brings out detecting is carried out to mapping, described main circuit board 4 is provided with LCDs 41 and serial ports 42, the serial ports 42 of described main circuit board 4 is provided with the Serial Port Line 7 being connected with computer 6, LCDs 41 also can be observed the variation of EEG signals, the result drawing after coordinating with computer 6 is more accurate, the serial ports 42 of main circuit board 4 is connected with computer 6 by Serial Port Line 7, makes its data wire number still less, simple in structure, make production cost lower.
Described audio-frequency module 1 comprises sine wave generating circuit 13, audio drive circuitry 14, random waveform circuit for generating 15, discharge circuit 16 and speaker 12, described sine wave generating circuit 13 is connected with discharge circuit 16 respectively with random waveform circuit for generating 15, described discharge circuit 16, audio drive circuitry 14 is connected successively with speaker 12, electroencephalogramsignal signal acquisition module 3 comprises the pre-amplification circuit 32 connecting successively, photoelectric isolating circuit 33, high-pass filtering circuit 34, 50Hz trap circuit 35, signal amplification circuit 36, low-pass filter circuit 37 and A/D change-over circuit 38, make the tone source and the simulated environment noise that send produce spatialization waveform, there is stereophonic effect, electroencephalogramsignal signal acquisition module 3 makes the data that collect more accurate, described speaker 12 has two, two speakers are vertically put, one of them outlet sound mouth is upwards horizontally disposed with, such two speakers can send the sound of different directions, simulate more real environment.
Described audio-frequency module 1 comprises audio-frequency module shielding box 11 and audio-frequency module circuit board (not indicating in figure), electroencephalogramsignal signal acquisition module 3 comprises electroencephalogramsignal signal acquisition module shielding box 31 and electroencephalogramsignal signal acquisition module circuit board (not indicating in figure), described audio-frequency module circuit board is arranged in audio-frequency module shielding box 11, described electroencephalogramsignal signal acquisition module circuit board is arranged in electroencephalogramsignal signal acquisition module shielding box 31, sine wave generating circuit 13, audio drive circuitry 14, random waveform circuit for generating 15, discharge circuit 16 and speaker 12 are all arranged on audio-frequency module circuit board, the pre-amplification circuit 32 connecting successively, photoelectric isolating circuit 33, high-pass filtering circuit 34, 50Hz trap circuit 35, signal amplification circuit 36, low-pass filter circuit 37 and A/D change-over circuit 38 are all arranged on electroencephalogramsignal signal acquisition module circuit board, make like this circuit layout compacter, overall volume is little, be convenient to installation and stability better, audio-frequency module shielding box 11 and electroencephalogramsignal signal acquisition module shielding box 31 have the characteristic of insulation, play the effect of circuit isolation, safer when use.
Described audio-frequency module 1 is provided with gain reset knob 8 and on and off switch 9, described gain reset knob 8 and on and off switch 9 reach outside audio-frequency module shielding box 11, can close at any time or open audio-frequency module 1 by and off switch 9 like this, and can control the volume that audio-frequency module 1 is sounded by gain reset knob 8 at any time.
The present embodiment also provides being described in detail as follows of Geng Jin mono-Walk:
the realization of tone source is by the continuously adjustable sine wave generating circuit 13 of audio-frequency module 1 design frequency, again in conjunction with the adjustable audio drive circuitry 14 of gain, according to acoustics computing formula, the 12 sounding time differences of speaker are set, produce spatialization waveform and stereophonic effect, thereby obtain occurring the spatialization in source;
the realization of simulated environment noise is by design random waveform circuit for generating 15, utilizes filtering gain negative feedback discharge circuit 16 and draws up various simulated environment noises according to noise parameter master die, thereby reaching the object of environmental simulation;
the realization of eeg signal acquisition is, by receptor electrode 2, EEG signals is transferred to electroencephalogramsignal signal acquisition module 3, electroencephalogramsignal signal acquisition module 3 utilize sound on the impact of brain wave as index, by pre-amplification circuit 32, photoelectric isolating circuit 33, high-pass filtering circuit 34,50Hz trap circuit 35, signal amplification circuit 36, low-pass filter circuit 37 and A/D change-over circuit 38, realize brain electricity and bring out current potential and carry out real-time monitoring;
the EEG signals collecting is transferred to 5 li of single-chip microcomputers on main circuit board 4, carry out after treatment signal serial ports converting transmission and import computer 6 into, the MATLAB waveform processing system that computer is 6 li carries out acquisition and recording to audiometry result data, MATLAB-GUI interface shows in real time brain wave and brings out potentiometric detection labelling, as audiometery and the reference index that adds the hearing test of making an uproar, finally draw and obtain comprehensive audiometry result and store by Algorithm Analysis and threshold audiogram.In addition, the designed tone source of this project can be used as sonifer input signal, gather, calculate by signal input and output, the functional parameter such as gain and frequency response of analytical test sonifer, entirety instrument is convenient small and exquisite, but basic required function is comparatively complete, there is source space, realize the object that objective chemical examination is joined thereby finally reach.
Claims (7)
1. simulated environment hearing aid fitting instrument, it is characterized in that: comprise audio-frequency module (1), electrode (2), electroencephalogramsignal signal acquisition module (3), main circuit board (4), single-chip microcomputer (5) and computer (6), described single-chip microcomputer (5) is arranged on main circuit board (4), described electrode (2), eeg signal acquisition mould (3), main circuit board (4), computer (6) connects successively, described audio-frequency module (1) produces tone source and simulated environment noise, described electroencephalogramsignal signal acquisition module (3) gathers amplification to EEG signals, described computer (6) is stored EEG signals, show in real time and the current potential that brings out detecting is carried out to mapping.
2. simulated environment hearing aid fitting instrument according to claim 1, it is characterized in that: described audio-frequency module (1) comprises sine wave generating circuit (13), audio drive circuitry (14), random waveform circuit for generating (15), discharge circuit (16) and speaker (12), described sine wave generating circuit (13) is connected with discharge circuit (16) respectively with random waveform circuit for generating (15), described discharge circuit (16), audio drive circuitry (14) is connected successively with speaker (12), electroencephalogramsignal signal acquisition module (3) comprises the pre-amplification circuit (32) connecting successively, photoelectric isolating circuit (33), high-pass filtering circuit (34), 50Hz trap circuit (35), signal amplification circuit (36), low-pass filter circuit (37) and A/D change-over circuit (38).
3. simulated environment hearing aid fitting instrument according to claim 2, it is characterized in that: described audio-frequency module (1) comprises audio-frequency module shielding box (11) and audio-frequency module circuit board, electroencephalogramsignal signal acquisition module (3) comprises electroencephalogramsignal signal acquisition module shielding box (31) and electroencephalogramsignal signal acquisition module circuit board, described audio-frequency module circuit board is arranged in audio-frequency module shielding box (11), described electroencephalogramsignal signal acquisition module circuit board is arranged in electroencephalogramsignal signal acquisition module shielding box (31), sine wave generating circuit (13), audio drive circuitry (14), random waveform circuit for generating (15), discharge circuit (16) and speaker (12) are all arranged on audio-frequency module circuit board, the pre-amplification circuit (32) connecting successively, photoelectric isolating circuit (33), high-pass filtering circuit (34), 50Hz trap circuit (35), signal amplification circuit (36), low-pass filter circuit (37) and A/D change-over circuit (38) are all arranged on electroencephalogramsignal signal acquisition module circuit board.
4. according to the simulated environment hearing aid fitting instrument described in claim 2 or 3, it is characterized in that: described speaker (12) has two, two speakers are vertically put, and one of them outlet sound mouth is upwards horizontally disposed with.
5. according to the simulated environment hearing aid fitting instrument described in claim 1 or 2 or 3, it is characterized in that: described main circuit board (4) is provided with LCDs (41) and serial ports (42), the serial ports (42) of described main circuit board (4) is provided with the Serial Port Line (7) being connected with computer (6).
6. simulated environment hearing aid fitting instrument according to claim 4, it is characterized in that: described main circuit board (4) is provided with LCDs (41) and serial ports (42), the serial ports (42) of described main circuit board (4) is provided with the Serial Port Line (7) being connected with computer (6).
7. simulated environment hearing aid fitting instrument according to claim 3, it is characterized in that: described audio-frequency module (1) is provided with gain reset knob (8) and on and off switch (9), and described gain reset knob (8) and on and off switch (9) reach outside audio-frequency module shielding box (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420018843.XU CN203988071U (en) | 2014-01-13 | 2014-01-13 | Simulated environment hearing aid fitting instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420018843.XU CN203988071U (en) | 2014-01-13 | 2014-01-13 | Simulated environment hearing aid fitting instrument |
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| Publication Number | Publication Date |
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| CN203988071U true CN203988071U (en) | 2014-12-10 |
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| CN201420018843.XU Expired - Fee Related CN203988071U (en) | 2014-01-13 | 2014-01-13 | Simulated environment hearing aid fitting instrument |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106601075A (en) * | 2017-02-05 | 2017-04-26 | 苏州路之遥科技股份有限公司 | Brain wave input trainer |
| WO2017206466A1 (en) * | 2016-05-28 | 2017-12-07 | 深圳市易特科信息技术有限公司 | Closed hearing health detection device |
| WO2017206467A1 (en) * | 2016-05-28 | 2017-12-07 | 深圳市易特科信息技术有限公司 | Bone conduction-based hearing detection apparatus |
-
2014
- 2014-01-13 CN CN201420018843.XU patent/CN203988071U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017206466A1 (en) * | 2016-05-28 | 2017-12-07 | 深圳市易特科信息技术有限公司 | Closed hearing health detection device |
| WO2017206467A1 (en) * | 2016-05-28 | 2017-12-07 | 深圳市易特科信息技术有限公司 | Bone conduction-based hearing detection apparatus |
| CN106601075A (en) * | 2017-02-05 | 2017-04-26 | 苏州路之遥科技股份有限公司 | Brain wave input trainer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160113 |