CN202334893U - Test device of hearing aid - Google Patents
Test device of hearing aid Download PDFInfo
- Publication number
- CN202334893U CN202334893U CN2011204532428U CN201120453242U CN202334893U CN 202334893 U CN202334893 U CN 202334893U CN 2011204532428 U CN2011204532428 U CN 2011204532428U CN 201120453242 U CN201120453242 U CN 201120453242U CN 202334893 U CN202334893 U CN 202334893U
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- circuit unit
- hearing aid
- chip
- lithium battery
- hearing aids
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Abstract
The utility model relates to a test device or a show device for an electronic circuit, in particular to a test device for a hearing aid. The test device for the hearing aid comprises a casing and a circuit arranged in the casing, and a lithium battery, as well as a charging interface, a microphone interface, an earphone interface and a programming interface, wherein the circuit of the circuit board particularly comprises a lithium battery charging circuit unit, a step-down unit and a hearing aid chip circuit unit; the input end of the lithium battery charging circuit unit is connected with the charging interface, the output end of the lithium battery charging circuit unit is connected with the lithium battery, and the lithium battery charging circuit unit is connected in series with a switch and then connected to the step-down circuit unit; the voltage-stabilizing output end of the step-down circuit unit is connected with the VCC power supply terminal of the hearing aid chip circuit unit; the microphone input end of the hearing aid chip circuit unit is connected with the microphone interface; the audio output end of the hearing aid chip circuit unit is connected with the earphone interface; and the programming input end of the hearing aid chip circuit unit is connected with the programming interface. The test device provided by the utility model is used for showing the performances of the hearing aid.
Description
Technical field
The utility model relates to electronic circuit test machine or display machine, relates in particular to the equipment of audition hearing aids.
Background technology
Hearing aids (hearing aid) helps hearing disabilities person to improve dysacousis, and then the unit of raising and his conference communicative competence and instrument etc.When the consumer of purchase hearing aids buys in the sales field,, all can think the audition audition effect of hearing aids once for the perhaps needs of test performance of feeling at ease.Hearing aids belongs to the precision equipment of small size, if each time desire show hearing aids the hearing aid performance time all hearing aids is worn to examination hearer duct and carries out; After the audition after frequent a period of time was showed, hearing aids was often just damaged by meeting.
The utility model content
Therefore; In order to show the performance of hearing aids; The utility model proposes a kind of hearing aids audition machine and supplies with the audition user and carry out audition, carry out the operation of audition and avoid all using the hearing aids product to wear to examination hearer duct at every turn, thereby the phenomenon of avoiding hearing aids to be damaged by a large amount of auditions takes place.
The concrete technical scheme of the utility model is following:
Hearing aids audition machine comprises: crust of the device be placed in circuit board, the lithium battery in the crust of the device and be arranged on charging inlet, microphone interface, earphone interface and the DLL on the crust of the device.Wherein, The physical circuit of circuit board comprises: lithium cell charging circuit unit, reduction voltage circuit unit and hearing aid chip circuit unit; Wherein the input of lithium cell charging circuit unit is to be connected to above-mentioned charging inlet, and output is connected to lithium battery, and is connected to the reduction voltage circuit unit again behind the serial connection switch; The output end of pressure-stabilizing of reduction voltage circuit unit is at the VCC power end that is connected to hearing aid chip circuit unit; The microphone input of hearing aid chip circuit unit is to be connected to above-mentioned microphone interface, and the audio output of hearing aid chip circuit unit is to be connected to above-mentioned earphone interface, and the programming input of hearing aid chip circuit unit is to be connected to above-mentioned DLL.
Further, described lithium cell charging circuit unit specifically: the positive input terminal series diode D2 of charging inlet is to the VCC end of lithium cell charging chip U1, and the BAT of lithium cell charging chip U1 is terminated at lithium battery, and GND holds ground connection.
Further, described lithium cell charging chip U1 is LT4054.
Further; Described reduction voltage circuit unit is specifically: the IN end that is connected to a LED luminescence unit and step-down chip U2 behind the switch is held with EN; The GND end ground connection of step-down chip U2; SW end and VOUT end connect inductance L 1 and capacitor C 5 respectively to output end of pressure-stabilizing, wherein output end of pressure-stabilizing and connecting resistance R2, R5 and capacitor C 3 backs to.
Further, described step-down chip U2 is XD3406A.
Further; Described hearing aid chip circuit unit is specifically: be connected to an inductance L 2 between the TC+ end of hearing aid chip U3 and the TC-end two ends; Be connected to a button S2 between OB end and the GND end two ends; The TSW termination has an adjustable resistance R6 to ground, the output end of pressure-stabilizing of the reduction voltage circuit unit that the VCC termination is above-mentioned.
Further, described hearing aid chip U3 is 91969.
The utility model adopts as above technical scheme, and the technique effect that has is: can let the consumer have personal audiovisual to know from experience to the performance of hearing aids through this hearing aids audition machine, and avoid the generation of hearing aids because of being damaged by a large amount of auditions.Simultaneously, this hearing aids audition machine adopts chargeable lithium cell to supply power, and the time of use is longer.
Description of drawings
Fig. 1 is the electrical block diagram of the utility model.
Embodiment
Combine accompanying drawing and embodiment that the utility model is further specified at present.
Hearing aids audition machine comprises: crust of the device be placed in circuit board, the lithium battery in the crust of the device and be arranged on charging inlet, microphone interface, earphone interface and the DLL on the crust of the device.Wherein, The physical circuit of circuit board comprises: lithium cell charging circuit unit, reduction voltage circuit unit and hearing aid chip circuit unit; Wherein the input of lithium cell charging circuit unit is to be connected to above-mentioned charging inlet, and output is connected to lithium battery, and is connected to the reduction voltage circuit unit again behind the serial connection switch; The output end of pressure-stabilizing of reduction voltage circuit unit is at the VCC power end that is connected to hearing aid chip circuit unit; The microphone input of hearing aid chip circuit unit is to be connected to above-mentioned microphone interface, and the audio output of hearing aid chip circuit unit is to be connected to above-mentioned earphone interface, and the programming input of hearing aid chip circuit unit is to be connected to above-mentioned DLL.
Consult shown in Figure 1, described lithium cell charging circuit unit specifically: the positive input terminal series diode D2 of charging inlet is to the VCC of lithium cell charging chip U1 end, and the BAT of lithium cell charging chip U1 is terminated at lithium battery, and GND holds ground connection.Preferably, described lithium cell charging chip U1 is LT4054.The lithium cell charging circuit unit is for lithium battery charges, and preferably also is provided with a LED light D1 and is used for indication.
Described reduction voltage circuit unit is specifically: the IN end that is connected to a LED luminescence unit and step-down chip U2 behind the switch is held with EN; The GND end ground connection of step-down chip U2; SW end and VOUT end connect inductance L 1 and capacitor C 5 respectively to output end of pressure-stabilizing, wherein output end of pressure-stabilizing and connecting resistance R2, R5 and capacitor C 3 backs to.Preferably, described step-down chip U2 is XD3406A.The reduction voltage circuit unit is that output+1.3V direct current of voltage regulation supplied hearing aid chip circuit cell operation after lithium battery was carried out step-down, preferably also is provided with a LED light D3 and is used for indication.
Described hearing aid chip circuit unit is specifically: be connected to an inductance L 2 between the TC+ end of hearing aid chip U3 and the TC-end two ends; Be connected to a button S2 between OB end and the GND end two ends; The TSW termination has an adjustable resistance R6 to ground, the output end of pressure-stabilizing of the reduction voltage circuit unit that the VCC termination is above-mentioned.Preferably, described hearing aid chip U3 is 91969.Hearing aid chip circuit unit is the main core of showing the hearing aid performance, and is consistent with the function of the hearing aids of corresponding model.Its middle port MIC1, MIC2 are microphone interfaces, and port J1 is an earphone interface, and port J2 is a DLL.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; But the those skilled in the art should be understood that; In the spirit and scope of the utility model that does not break away from appended claims and limited; Can make various variations to the utility model in form with on the details, be the protection range of the utility model.
Claims (7)
1. hearing aids audition machine is characterized in that: comprise crust of the device and be placed in circuit board, the lithium battery in the crust of the device and be arranged on charging inlet, microphone interface, earphone interface and the DLL on the crust of the device; Wherein the physical circuit of circuit board comprises: lithium cell charging circuit unit, reduction voltage circuit unit and hearing aid chip circuit unit; Wherein the input of lithium cell charging circuit unit is to be connected to above-mentioned charging inlet; Output is connected to lithium battery; And be connected to the reduction voltage circuit unit behind the serial connection switch again, and the output end of pressure-stabilizing of reduction voltage circuit unit is at the VCC power end that is connected to hearing aid chip circuit unit, and the microphone input of hearing aid chip circuit unit is to be connected to above-mentioned microphone interface; The audio output of hearing aid chip circuit unit is to be connected to above-mentioned earphone interface, and the programming input of hearing aid chip circuit unit is to be connected to above-mentioned DLL.
2. hearing aids audition machine according to claim 1; It is characterized in that: described lithium cell charging circuit unit specifically: the positive input terminal series diode D2 of charging inlet is to the VCC of lithium cell charging chip U1 end; The BAT of lithium cell charging chip U1 is terminated at lithium battery, and GND holds ground connection.
3. hearing aids audition machine according to claim 2 is characterized in that: described lithium cell charging chip U1 is LT4054.
4. hearing aids audition machine according to claim 1; It is characterized in that: described reduction voltage circuit unit specifically: the IN end that is connected to a LED luminescence unit and step-down chip U2 behind the switch is held with EN; The GND end ground connection of step-down chip U2; SW end and VOUT end connect inductance L 1 and capacitor C 5 respectively to output end of pressure-stabilizing, wherein output end of pressure-stabilizing and connecting resistance R2, R5 and capacitor C 3 backs to.
5. hearing aids audition machine according to claim 4 is characterized in that: described step-down chip U2 is XD3406A.
6. hearing aids audition machine according to claim 1; It is characterized in that: described hearing aid chip circuit unit specifically: be connected to an inductance L 2 between the TC+ of hearing aid chip U3 end and the TC-end two ends; Be connected to a button S2 between OB end and the GND end two ends; The TSW termination has an adjustable resistance R6 to ground, the output end of pressure-stabilizing of the reduction voltage circuit unit that the VCC termination is above-mentioned.
7. hearing aids audition machine according to claim 6 is characterized in that: described hearing aid chip U3 is 91969.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204532428U CN202334893U (en) | 2011-11-16 | 2011-11-16 | Test device of hearing aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204532428U CN202334893U (en) | 2011-11-16 | 2011-11-16 | Test device of hearing aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202334893U true CN202334893U (en) | 2012-07-11 |
Family
ID=46446855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204532428U Expired - Lifetime CN202334893U (en) | 2011-11-16 | 2011-11-16 | Test device of hearing aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202334893U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104581596A (en) * | 2014-12-31 | 2015-04-29 | 苏州立人听力器材有限公司 | Hearing aid selective assembly device with answering function |
| CN104581597A (en) * | 2014-12-31 | 2015-04-29 | 苏州立人听力器材有限公司 | Hearing-aid selecting and matching device |
| CN104581595A (en) * | 2014-12-31 | 2015-04-29 | 苏州立人听力器材有限公司 | Simulated hearing-aid fitting device |
| CN104581594A (en) * | 2014-12-31 | 2015-04-29 | 苏州立人听力器材有限公司 | Multi-hearing-aid matching device |
| CN104980863A (en) * | 2014-12-31 | 2015-10-14 | 苏州立人听力器材有限公司 | Hearing-aid fitting device with artificial ear |
-
2011
- 2011-11-16 CN CN2011204532428U patent/CN202334893U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104581596A (en) * | 2014-12-31 | 2015-04-29 | 苏州立人听力器材有限公司 | Hearing aid selective assembly device with answering function |
| CN104581597A (en) * | 2014-12-31 | 2015-04-29 | 苏州立人听力器材有限公司 | Hearing-aid selecting and matching device |
| CN104581595A (en) * | 2014-12-31 | 2015-04-29 | 苏州立人听力器材有限公司 | Simulated hearing-aid fitting device |
| CN104581594A (en) * | 2014-12-31 | 2015-04-29 | 苏州立人听力器材有限公司 | Multi-hearing-aid matching device |
| CN104980863A (en) * | 2014-12-31 | 2015-10-14 | 苏州立人听力器材有限公司 | Hearing-aid fitting device with artificial ear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 361000 floor 3, building B8, biomedical industrial park, No. 2064, wengjiao West Road, Haicang District, Xiamen City, Fujian Province Patentee after: AUSTAR HEARING SCIENCE & TECHNOLOGY (XIAMEN) Co.,Ltd. Address before: 361000 6th floor, Dongfang business building, Huasheng Road, Huli District, Xiamen City, Fujian Province Patentee before: AUSTAR HEARING SCIENCE & TECHNOLOGY (XIAMEN) Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |