CN2042345U - Sense of hearing inducing potentiometric measuring instrument - Google Patents
Sense of hearing inducing potentiometric measuring instrument Download PDFInfo
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- CN2042345U CN2042345U CN 88219972 CN88219972U CN2042345U CN 2042345 U CN2042345 U CN 2042345U CN 88219972 CN88219972 CN 88219972 CN 88219972 U CN88219972 U CN 88219972U CN 2042345 U CN2042345 U CN 2042345U
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- amplifier
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- evoked potential
- auditory evoked
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The utility model discloses an instrument which can measure and record the induced electric potential of human body's auditory nerve, belonging to the technical field of medical instrument. In the utility model, an acoustic stimulator is controlled by a microprocessor and the signals of the induced electric potential are amplified by an amplifier and are input into a microcomputer by an analog-digital converter to operate the result which is printed then. The utility model has the advantages of accuracy and intuition, various measuring and recording functions and low cost, which solves the problem of recording the induced electric potential of the auditory nerve.
Description
The utility model discloses a kind of being used to measures and writes down the instrument that the human body auditory nerve brings out current potential, belongs to the Medical Instruments technical field.
It is the advanced technology that the seventies rises that the record auditory nerve brings out current potential, for the active record of auditory nerve, can reflect objectively that the acoustic nerve systemic-function is whether unusual and provide unusual accurate position, for the diagnosis of acoustic nerve system illness provides reliable basis.But this mensuration and the record that brings out current potential is subjected to a little less than the current potential, during reflection to the influence of factors such as phasic Chang, brought certain difficulty for test and record, be a kind of test and the recording process that present existing electric physiology test instrunment can't satisfactorily be finished, thereby to have invented a kind of instrument that can measure and write down the human body auditory evoked potential be to carry out the problem that human body auditory evoked potential research presses for solution.
Invention task of the present utility model provides a kind ofly can accurately measure the dynamic amount of noting the human body auditory evoked potential and the auditory evoked potential tester of depicting its oscillogram.
Invention task of the present utility model also be to improve as much as possible this auditory evoked potential tester the ratio of performance to price, reduce its manufacturing cost and be beneficial to penetration and promotion and use.
Figure of description 1 is an its whole structure block diagram of the present utility model.
Figure of description 2 is the white noise signal generation circuit road figure in the acoustic stimulator of the present utility model.
Figure of description 3 is circuit diagrams of the short acoustical signal generation circuit in the acoustic stimulator of the present utility model.
Figure of description 3 is circuit diagrams of the short acoustical signal generation circuit in the acoustic stimulator of the present utility model.
Figure of description 4 is circuit diagrams of amplifier of the present utility model.
Figure of description 5 is microcomputer software program main program flow charts of the present utility model.
Technical essential of the present utility model shows as utilizes microcomputer guide sound stimulator to send stimulus signal, the electric potential signal that brings out that again will be after amplifier amplifies is input to through analog-to-digital conversion and shows after microcomputer carries out superposition and print, and finishes mensuration and record to auditory evoked potential. Whole test record process is finished by software program control.
Now according to Figure of description concrete structure of the present utility model is described: sense of hearing inducing potentiometric measuring instrument comprises that a microsystem and interface circuit, amplifier, the acoustic stimulator and earphone consist of, it is characterized in that the acoustic stimulator is made of a white noise signal circuit for generating and a short acoustical signal circuit for generating, amplifier is the multi-stage biological electric amplifier of the adjustable high input impedance of a gain and time constant.
Work process of the present utility model is that acoustic stimulator generation white noise signal and short sound stimulus signal are input to respectively in non-test ear earphone and the test ear earphone, the current potential that brings out that the experimenter brings out generation is input in the amplifier by electrode, after multistage amplification, be input in the microsystem and handle by A/D conversion, the result after the processing can display and printer two parts show and print record under.The sound stimulation triggering signal that microcomputer takes place is input to through the D/A conversion makes the external trigger signal in the acoustic stimulator, the guide sound stimulator sends stimulus signal according to the control instruction of microsystem, thereby finish the difference accurate recording that brings out current potential of reflection time, because microsystem and interface circuit thereof in this utility model are existing mature technologies, so do not do introduction at this, the structure of its amplifier and the acoustic stimulator will describe in detail in the concrete enforcement below more.
This utility model has solved the mensuration and the record problem of auditory evoked potential, have accurately, rapidly, characteristics intuitively.In addition, this utility model makes it possess multiple test function owing to adopted microsystem as to bringing out the processing unit of current potential, and hardware setting is simplified, and the complete machine cost can reduce greatly, extensively popularization and application.
Below by Figure of description, a specific embodiment of the present utility model is done introduction: among the embodiment, microsystem has adopted Fructus Mali pumilae II type microcomputer; Its A/D, D/A converter have adopted supporting with it MS-1213 mould to go into the mould outgoing interface; Amplifier has adopted by 3BG
1, 3BG
2With integrated circuit 3IC
6, 3IC
7, 3IC
8, 3IC
9The multi-stage biological electric amplifier of the high input impedance that gain of forming and time constant are adjustable.3BG wherein
1, 3BG
2Form high input differential amplifier circuit, 3BG
1, 3BG
2Be EDM3D type differential pair transistors.Interstage amplifier section has adopted 3IC
6, 3IC
7, 3IC
8Integrated operational amplifier circuit, its model is respectively F007, F357, F357, and output stage has adopted 3IC
9, its model is F355.Disturb for fear of power supply, amplifier has adopted by 3IC
2～3IC
5Four blocks of two-stage regulated power supplys that the three-terminal voltage-stabilizing integrated package is formed; White noise signal generation circuit in the acoustic stimulator has adopted two Zener diode white noise generation circuit, by the 2BG that selects
10, 2BG
11The white noise spectrum composition that two Zener two utmost points can make generation is than single tube more " in vain ", earlier through 2BG
5, 2BG
6The differential amplifier of forming amplifies, again through 2BG
7, 2BG
8, 2BG
9The amplifier circuit of forming amplifies the back by potentiometer W
1Be input to the power amplifier level, power amplifier is input to the power amplifier level, and the multistage attenuator of power amplifier output termination exports the permutator 2K of earphone to
5, power amplifier level integrated circuit 2IC
4Adopted HL-MIO type power discharging integrated block; Short acoustical signal generation circuit by crystal triode form impedance transformation and secondary phase inverter, the wide adjusting shaping circuit of ripple that is made of D flip-flop and pre-amplification circuit and power amplifier formed.Adopted 2BG
1, 2BG
2, 2BG
3, 2BG
4Four crystal triodes are formed impedance transformation and secondary phase inverter, and triggering signal is delivered to permutator 2K
2Be input to integrated circuit 2IC
1After doing the wide adjusting shaping of ripple and making that short sound wave is wide and reach required standard, be input to 2IC through gate circuit and short applicator switch again
2Carry out preposition amplification, after 2IC
3Power amplifier exports attenuator to, attenuator outfan and earphone permutator 2K
52IC wherein
1Be two D flip-flop CO43,2IC
2Be pre-amplification circuit 5G28, power amplifier integrate circuit 2IC
2Be HL-MIC, gate circuit can be used CO388, CO36B etc.
In a further embodiment, microsystem can be selected 8-bit microcontroller for use, can reduce production costs greatly like this.
Claims (6)
1, a kind of auditory evoked potential tester, comprise that a microsystem and interface circuit, amplifier, the acoustic stimulator and earphone constitute, it is characterized in that the acoustic stimulator is made of a white noise signal generation circuit and a short acoustical signal generation circuit, amplifier is the multi-stage biological electric amplifier of the adjustable high input impedance of a gain and time constant.
2, according to the described auditory evoked potential tester of claim 1, it is characterized in that microsystem has adopted Fructus Mali pumilae II type microcomputer, its A/D, D/A converter have adopted supporting with it MS-1213 mould to go into the mould outgoing interface.
3, according to the described auditory evoked potential tester of claim 1, it is characterized in that amplifier has adopted by 3BG
1, 3BG
2With integrated circuit 3IC
6, 3IC
73IC
8, 3IC
9The multi-stage biological electric amplifier of the high input impedance that gain of forming and time constant are adjustable, wherein 3BG
1, 3BG
2Be EDM3D type differential pair transistors, the 3IC that interstage amplifier section adopts
6Be F007,3IC
7And 3IC
8Be F357, output stage 3IC
9Be F355.
4,, it is characterized in that white noise signal generation circuit has adopted two Zener diode white noise generation circuit according to the described auditory evoked potential tester of claim 1.
5, according to the described auditory evoked potential tester of claim 1, wide adjusting shaping circuit of ripple that it is characterized in that impedance transformation that short acoustical signal generation circuit is made up of crystal triode and secondary phase inverter, is made of D shape trigger and pre-amplification circuit and power amplifier are formed, wherein 2IC
1Be two D flip-flop C043,2IC
2Be pre-amplification circuit 5G28, power amplifier integrate circuit 2IC
2Be HL-MIC.
6,, it is characterized in that microsystem can select 8-bit microcontroller for use according to the described auditory evoked potential tester of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88219972 CN2042345U (en) | 1988-10-04 | 1988-10-04 | Sense of hearing inducing potentiometric measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88219972 CN2042345U (en) | 1988-10-04 | 1988-10-04 | Sense of hearing inducing potentiometric measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2042345U true CN2042345U (en) | 1989-08-09 |
Family
ID=4852274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88219972 Withdrawn CN2042345U (en) | 1988-10-04 | 1988-10-04 | Sense of hearing inducing potentiometric measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2042345U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100341462C (en) * | 2005-10-20 | 2007-10-10 | 上海交通大学 | Double ear alternative stimulated brainstem auditory evoked potential(BAEP) tracing device |
| CN100427031C (en) * | 2001-08-07 | 2008-10-22 | 迪奥普西斯公司 | System and method for vision examination |
| CN101716074B (en) * | 2008-10-09 | 2011-09-14 | 南方医科大学 | Evoked potential recorder based on time characteristic indicators |
| CN102469961A (en) * | 2010-01-28 | 2012-05-23 | 松下电器产业株式会社 | Speech sound intelligibility evaluation system, method, and program |
| CN106510702A (en) * | 2016-12-09 | 2017-03-22 | 广州大学 | Auditory sense attention characteristic extraction and recognition system and method based on middle latency auditory evoked potential |
-
1988
- 1988-10-04 CN CN 88219972 patent/CN2042345U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427031C (en) * | 2001-08-07 | 2008-10-22 | 迪奥普西斯公司 | System and method for vision examination |
| CN100341462C (en) * | 2005-10-20 | 2007-10-10 | 上海交通大学 | Double ear alternative stimulated brainstem auditory evoked potential(BAEP) tracing device |
| CN101716074B (en) * | 2008-10-09 | 2011-09-14 | 南方医科大学 | Evoked potential recorder based on time characteristic indicators |
| CN102469961A (en) * | 2010-01-28 | 2012-05-23 | 松下电器产业株式会社 | Speech sound intelligibility evaluation system, method, and program |
| CN102469961B (en) * | 2010-01-28 | 2015-05-13 | 松下电器产业株式会社 | Speech sound intelligibility evaluation system and method |
| CN106510702A (en) * | 2016-12-09 | 2017-03-22 | 广州大学 | Auditory sense attention characteristic extraction and recognition system and method based on middle latency auditory evoked potential |
| CN106510702B (en) * | 2016-12-09 | 2019-09-17 | 广州大学 | The extraction of sense of hearing attention characteristics, identifying system and method based on Middle latency auditory evoked potential |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |