CN202334893U - Test device of hearing aid - Google Patents

Test device of hearing aid Download PDF

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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
Authority
CN
China
Prior art keywords
circuit unit
chip
hearing aid
output
hearing
Prior art date
Application number
CN2011204532428U
Other languages
Chinese (zh)
Inventor
薛行栋
Original Assignee
欧仕达听力科技(厦门)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 欧仕达听力科技(厦门)有限公司 filed Critical 欧仕达听力科技(厦门)有限公司
Priority to CN2011204532428U priority Critical patent/CN202334893U/en
Application granted granted Critical
Publication of CN202334893U publication Critical patent/CN202334893U/en

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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

Hearing aids audition machine
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.
CN2011204532428U 2011-11-16 2011-11-16 Test device of hearing aid CN202334893U (en)

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

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204532428U 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)

* Cited by examiner, † Cited by third party
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
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
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
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
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

Cited By (5)

* Cited by examiner, † Cited by third party
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
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
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
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
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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