CN204031455U - A kind of laser vibrating diaphragm FO tester - Google Patents
A kind of laser vibrating diaphragm FO tester Download PDFInfo
- Publication number
- CN204031455U CN204031455U CN201420149091.0U CN201420149091U CN204031455U CN 204031455 U CN204031455 U CN 204031455U CN 201420149091 U CN201420149091 U CN 201420149091U CN 204031455 U CN204031455 U CN 204031455U
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- vibrating diaphragm
- laser
- displacement sensor
- tester
- laser displacement
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Abstract
The utility model discloses a kind of laser vibrating diaphragm FO tester, comprise position determining means, generating apparatus, real time distance device and the data processing control device of taking place frequently shakes; Described position determining means is for moving to best measurement position by laser displacement sensor, described shaking takes place frequently generating apparatus for promoting tested vibrating diaphragm generation vibration, the Oscillation Amplitude of tested vibrating diaphragm when described real time distance device is used for measuring different frequency, described data processing control device is for controlling the input and output of whole system running parameter, and the curve chart that forms tested vibrating diaphragm Oscillation Amplitude, and then obtain its resonance frequency.A kind of high automation of the utility model, high-precision laser vibrating diaphragm FO tester product, with resonance frequency convenient, that accurately measure the diaphragm of loudspeaker, conscientiously improve the quality of finished product loud speaker, thereby China's loud speaker manufacturing standard walked with world's pace.
Description
Technical field:
The utility model relates to the field that manufactures and designs of resonance frequency tester, especially refers to the instrument of a kind of resonance frequency of test loudspeaker vibrating diaphragm \ diaphragm separately (FO value).。
Background technology:
As everyone knows, loud speaker is a device the weakest in stereo set, and for acoustics, it is again most important parts.Loud speaker of a great variety, but basic principle is simple, audio frequency electric energy is by electromagnetism, piezoelectricity or static, make its diaphragm vibration and with around air produce resonance (sympathetic response) and sound.In the quality index of loud speaker, the resonance frequency of vibrating diaphragm is most important.Therefore,, when design, manufacture loud speaker, must test the resonance frequency of vibrating diaphragm, to guarantee its end product quality.The main method of testing of test loudspeaker vibrating diaphragm \ diaphragm is indirect test method at present.Tested vibrating diaphragm be fixed on loud speaker directly over, by sinusoidal signal, from low frequency to high frequency sweep, drive loud speaker that vibrating diaphragm is vibrated thereupon.The loud speaker that feeds back to by air cavity makes to drive loud speaker electric current to change again.Thereby determine the resonance frequency of tested vibrating diaphragm.The method can only test that vibrating diaphragm resonant Q value is large, vibrating diaphragm size is large, circular membrane, the moderate vibrating diaphragm of drum weight, and too heavy too gently test is not out.And very high to driving the FO of loudspeaker itself to require, the variation of driving loudspeaker directly has influence on the frequency of vibrating diaphragm.Driving loudspeaker curent change is very little or have repeatedly variation (having a plurality of resonance crests), cannot correctly efficiently judge the FO. of tested vibrating diaphragm.Although there is the diaphragm of loudspeaker resonance frequency measuring instrument scheme of several special uses in state, but there is obvious problem, for example the outmoded precision that causes of survey tool is not high, although or the superior overal system design defect of measuring instrument, too much incorporate artificial subjective judgement and cause entire system precision shortcoming.Therefore, producer of the same trade is strong expects that a kind of high automation, high-precision harmonic frequency tester for loudhailer film device come out as early as possible, with resonance frequency convenient, that accurately measure the various model diaphragms of loudspeaker, conscientiously improve the quality of finished product loud speaker, thereby China's loud speaker manufacturing standard is walked with world's pace.
Utility model content:
The technical problems to be solved in the utility model is to overcome the low precision problem that a variety of causes that existing tester exists causes, to industry, provide a kind of high automation, high-precision laser vibrating diaphragm FO tester product, with resonance frequency convenient, that accurately measure the diaphragm of loudspeaker, conscientiously improve the quality of finished product loud speaker, thereby China's loud speaker manufacturing standard is walked with world's pace.
For achieving the above object, a kind of laser vibrating diaphragm FO tester of the present utility model comprises position determining means, generating apparatus, real time distance device and the data processing control device of taking place frequently shakes.Position determining means is for moving to best measurement position by laser displacement sensor, shake and take place frequently generating apparatus for promoting tested vibrating diaphragm generation vibration, the Oscillation Amplitude of tested vibrating diaphragm when real time distance device is used for measuring different frequency, data processing control device is for controlling the input and output of whole system running parameter, and the curve chart that forms tested vibrating diaphragm Oscillation Amplitude, and then obtain its resonance frequency; Position determining means comprises orthogonal three guide rails and three axle closed-loop control platforms in space, all has a servomotor on each guide rail.
As technique scheme preferably, the generating apparatus that takes place frequently of shaking comprises audio-frequency power amplifier, 10 cun of driving loudspeaker, 6.5 cun of driving loudspeaker, 3 cun of driving loudspeaker, clamping device, framework, drive loudspeaker to be individually fixed in the round hole of frame upper surface corresponding size, pronunciation is towards upper, and clamping device is placed in each and drives horn mouth surrounding.
As technique scheme preferably, real time distance device comprises laser displacement sensor and laser displacement sensor main frame, laser displacement sensor is fixed on guide rail, Laser emission direction is downward.
As technique scheme preferably, data processing control device comprises host computer and display, host computer data wire is connected with laser displacement sensor with three axle closed-loop control platforms, audio-frequency power amplifier.
The beneficial effects of the utility model are: the utility model overcomes the low precision problem that a variety of causes that existing tester exists causes, to industry, provide a kind of high automation, high-precision laser vibrating diaphragm FO tester product, with resonance frequency convenient, that accurately measure the diaphragm of loudspeaker, conscientiously improve the quality of finished product loud speaker, thereby China's loud speaker manufacturing standard is walked with world's pace.
Accompanying drawing explanation:
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the structural representation of the utility model embodiment
Fig. 2 is the circuit theory diagrams of the utility model embodiment
Embodiment:
Therefore the following stated only, for embodying the preferred embodiment of the utility model principle, does not limit protection range of the present utility model
Be the embodiment of the utility model laser vibrating diaphragm FO tester as shown in Figure 1, 2, it comprises position determining means, generating apparatus, real time distance device and the data processing control device of taking place frequently shakes.
Position determining means is for moving to best measurement position by laser displacement sensor 12, it comprises X-axis guide rail 1 and servomotor 4, Y-axis guide rail 2 and servomotor 5 thereof, Z axis guide rail 3 and servomotor 6 thereof, three axle closed-loop control platforms 13, described servomotor 4 is connected with three axle closed-loop control platforms 13 by line 19, described servomotor 5 is connected with three axle closed-loop control platforms 13 by line 20, and described servomotor 6 is connected with three axle closed-loop control platforms 13 by line 21.
The generating apparatus that takes place frequently of shaking produces vibration for promoting tested vibrating diaphragm 30, and it comprises audio-frequency power amplifier 14,7,6.5 cun of driving loudspeaker 8 of 31,10 cun of driving loudspeaker of framework and 3 cun of driving loudspeaker 9, clamping device 10.Described in figure mono-, drive loud speaker 7,8,9 to be fixed on framework 29 upper surface corresponding size circle holes, by line 22,23,24, be connected with described audio-frequency power amplifier 14, four clamping devices 10 of described driving loud speaker 8 surrounding are fixed on framework 31 upper surfaces by tested vibrating diaphragm 30.
The Oscillation Amplitude of tested vibrating diaphragm 30 when real time distance device is used for measuring different frequency, comprise and be placed in tested vibrating diaphragm 9 tops, be fixed on the laser displacement sensor 12 on Z axis guide rail 3, laser displacement sensor main frame 15, described laser displacement sensor 12 is connected by line 25 with described laser displacement sensor main frame 15.
Data processing control device is for controlling the input and output of whole system running parameter, and the curve chart that forms tested vibrating diaphragm Oscillation Amplitude, thereby obtain exactly its resonance frequency, comprise host computer 16 and display 17, described host computer 16 is connected with three axle closed-loop control platforms 13 by line 26, described host computer 16 is connected with audio-frequency power amplifier 14 by line 27, described host computer 16 is connected with laser displacement sensor main frame 15 by line 28, and described host computer 16 is connected with display 17 by line 29.
Continue by reference to the accompanying drawings the operation principle of summary this patent below.According to the size of tested vibrating diaphragm 30 (as example in figure), be placed in directly over 6.5 cun of driving loudspeaker 8, use clamping device 10 to be fixed.Open system, three axle closed-loop control platforms 13 can be by servomotor 4, 5, 6 laser displacement sensor 12 is moved to tested vibrating diaphragm 30 directly over 29mm between 31mm, guarantee to obtain the most stable, accurate data, then operating computer main frame 16, send 20-20000Hz swept-frequency signal, and be sent to audio-frequency power amplifier 14, warp 23 makes to drive loudspeaker 8 sounding, driving 8, loudspeaker to promote described tested vibrating diaphragm 30 vibrates, the receiving terminal of described laser displacement sensor 12 Emission Lasers return laser light displacement transducer 12 after tested vibrating diaphragm 9 surface reflections, signal transfers to host computer 16 after laser displacement sensor main frame 15 is processed, host computer 16 is by signal and the swept-frequency signal integrated treatment of sending, obtain the Oscillation Amplitude of tested vibrating diaphragm 30 when different frequency, and obtain exactly its resonance frequency, and be presented on display 17 by line 29.
Claims (4)
1. a laser vibrating diaphragm FO tester, comprises position determining means, generating apparatus, real time distance device and the data processing control device of taking place frequently shakes; It is characterized in that: described position determining means is for moving to best measurement position by laser displacement sensor, described shaking takes place frequently generating apparatus for promoting tested vibrating diaphragm generation vibration, the Oscillation Amplitude of tested vibrating diaphragm when described real time distance device is used for measuring different frequency, described data processing control device is for controlling the input and output of whole system running parameter, and the curve chart that forms tested vibrating diaphragm Oscillation Amplitude, and then obtain its resonance frequency; Described position determining means comprises orthogonal three guide rails and three axle closed-loop control platforms in space, all has a servomotor on each described guide rail.
2. a kind of laser vibrating diaphragm FO tester according to claim 1, it is characterized in that: the generating apparatus that takes place frequently of shaking comprises audio-frequency power amplifier, 10 cun of driving loudspeaker, 6.5 cun of driving loudspeaker, 3 cun of driving loudspeaker, clamping device, framework, described driving loudspeaker are individually fixed in the round hole of frame upper surface corresponding size, pronunciation is towards upper, and described clamping device is placed in each and drives horn mouth surrounding.
3. a kind of laser vibrating diaphragm FO tester according to claim 1, is characterized in that: real time distance device comprises laser displacement sensor and laser displacement sensor main frame, and described laser displacement sensor is fixed on guide rail, and Laser emission direction is downward.
4. a kind of laser vibrating diaphragm FO tester according to claim 1, it is characterized in that: data processing control device comprises host computer and display, the data wire of host computer is connected with three axle closed-loop control platforms, and laser displacement sensor is connected with audio-frequency power amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149091.0U CN204031455U (en) | 2014-03-26 | 2014-03-26 | A kind of laser vibrating diaphragm FO tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149091.0U CN204031455U (en) | 2014-03-26 | 2014-03-26 | A kind of laser vibrating diaphragm FO tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204031455U true CN204031455U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420149091.0U Expired - Fee Related CN204031455U (en) | 2014-03-26 | 2014-03-26 | A kind of laser vibrating diaphragm FO tester |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125532A (en) * | 2013-04-27 | 2014-10-29 | 宁波市鄞州腾辰电子有限公司 | Laser vibrating diaphragm F0 tester |
| CN105050018A (en) * | 2015-05-08 | 2015-11-11 | 浙江中科电声研发中心 | Method and system for measuring resonant frequency of loudspeaker part |
| TWI562647B (en) * | 2014-12-24 | 2016-12-11 | Univ Nat Taiwan Science Tech | The constructive design of vibration measurement for electrostatic loudspeaker |
| CN107333219A (en) * | 2017-08-10 | 2017-11-07 | 珠海市运泰利自动化设备有限公司 | A kind of tester of loudspeaker vibration signal and audio signal |
| CN107846652A (en) * | 2016-09-19 | 2018-03-27 | 西格玛艾尔科技股份有限公司 | Diffuser resonant frequency determines devices and methods therefor |
| CN111263286A (en) * | 2020-01-19 | 2020-06-09 | 广州市建桥音响配件有限公司 | Full-automatic pipelined cone detecting system |
| CN113852901A (en) * | 2021-08-27 | 2021-12-28 | 潍坊歌尔丹拿电子科技有限公司 | Test fixture and test device |
-
2014
- 2014-03-26 CN CN201420149091.0U patent/CN204031455U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125532A (en) * | 2013-04-27 | 2014-10-29 | 宁波市鄞州腾辰电子有限公司 | Laser vibrating diaphragm F0 tester |
| TWI562647B (en) * | 2014-12-24 | 2016-12-11 | Univ Nat Taiwan Science Tech | The constructive design of vibration measurement for electrostatic loudspeaker |
| CN105050018A (en) * | 2015-05-08 | 2015-11-11 | 浙江中科电声研发中心 | Method and system for measuring resonant frequency of loudspeaker part |
| CN105050018B (en) * | 2015-05-08 | 2019-01-29 | 浙江中科电声研发中心 | Loudspeaker assembly resonant frequency measurement method and system |
| CN107846652A (en) * | 2016-09-19 | 2018-03-27 | 西格玛艾尔科技股份有限公司 | Diffuser resonant frequency determines devices and methods therefor |
| CN107333219A (en) * | 2017-08-10 | 2017-11-07 | 珠海市运泰利自动化设备有限公司 | A kind of tester of loudspeaker vibration signal and audio signal |
| CN107333219B (en) * | 2017-08-10 | 2024-01-09 | 珠海市运泰利自动化设备有限公司 | Tester for loudspeaker vibration signal and audio signal |
| CN111263286A (en) * | 2020-01-19 | 2020-06-09 | 广州市建桥音响配件有限公司 | Full-automatic pipelined cone detecting system |
| CN113852901A (en) * | 2021-08-27 | 2021-12-28 | 潍坊歌尔丹拿电子科技有限公司 | Test fixture and test device |
| CN113852901B (en) * | 2021-08-27 | 2023-11-07 | 潍坊歌尔丹拿电子科技有限公司 | Test fixture and test device |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20141217 Termination date: 20160326 |
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| CF01 | Termination of patent right due to non-payment of annual fee |