CN101212839A - Speaker spider and vibrating membrane flexibility tester - Google Patents
Speaker spider and vibrating membrane flexibility tester Download PDFInfo
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- CN101212839A CN101212839A CNA2007101648191A CN200710164819A CN101212839A CN 101212839 A CN101212839 A CN 101212839A CN A2007101648191 A CNA2007101648191 A CN A2007101648191A CN 200710164819 A CN200710164819 A CN 200710164819A CN 101212839 A CN101212839 A CN 101212839A
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Abstract
The invention discloses a centering support chip of loud speaker and a diaphragm elastic tester, which comprises a data processing device, an application device and a force measurement device and distance measurement equipment that are fixedly connected with each other and respectively connected with the data processing device through a data wire (1011) and a data wire (1012); the application device comprises a base (102), a frame (104) fixed on the base (102) and a stepping motor (105) that is connected with a single chip (106) and controlled by drive pulse signals produced by the single chip (106); the stepping motor (105) is arranged on the frame (104); a rotary shaft of the stepping motor (105) is fixedly connected with the distance measurement equipment; a level conversion chip (107) is connected between the data processing device and the single chip (106); both the single chip (106) and the stepping motor (105) are electrically connected with a power drive unit (120). The invention has the advantages that the invention not only has high measurement precision and easily determined displacement initial position but also has short measurement time for single time and more simple and convenient operation.
Description
Technical field:
The present invention relates to a kind of flexibility test instrument, specifically is a kind of loud speaker centring disk and vibrating diaphragm elasticity tester.
Background technology:
Centring disk and vibrating diaphragm all are the critical pieces of forming loud speaker, their elastic performance plays crucial effects to the quality of loud speaker, for many years, on the loud speaker industry detection of their elastic performances is mainly relied on people's feel, because this manual inspection mode mainly is to rely on testing staff's experience to finish the detection operation, so there is the low and unsettled defective of detection quality of work efficiency in it.
At present, prior art has a kind of flexibility test instrument, and this instrument is displacement by the amount that centring disk or vibrating diaphragm is applied a certain fixing active force and measure its deformation.Granted publication number promptly is the patent about the type instrument that the applicant has authorized for the utility model of CN2864659Y, it discloses the instrument of a kind of automatic test loudspeaker centring disk and vibrating diaphragm ring coefficient of elasticity, and this instrument comprises device for measuring force, range unit and data handling system; Described device for measuring force comprises digital display dynamometer and fore-set, and the fore-set bottom is corresponding to measured piece; Described range unit comprises digital display calliper and base, and the digital display calliper vertical fixing is in base; The numerical value that shows on described digital display dynamometer and the digital display calliper outputs to data processing equipment by data wire respectively, handles by the computer in the data processing equipment, thus the Elastic Function curve of formation measured piece.In addition, described digital display dynamometer is also fixedlyed connected with the vernier of digital display calliper by a slide block; Described vernier is connected with force application apparatus; Described force application apparatus comprises base and framework, establishes the handwheel of vertical screw rod and its rotation of driving in the described framework; Be provided with connecting rod between described screw rod and the trip card, an end of described connecting rod is meshed with screw rod, and the other end both can be fixed in the trip card of digital display calliper, also can fuse in slide block.
After reality is used, though finding above-mentioned utility model, the applicant effectively overcome work efficiency low and unsettled defective of quality and deficiency that the manual inspection mode exists, still there are following four weak points in actual applications in it:
1, the speed that moves down of dynamometer is inhomogeneous: this instrument is to rotate handwheel by the testing staff with hand to drive dynamometer, thereby when unit under test being applied the active force that increases gradually, measure the deformation quantity of unit under test, because hand can not make strength keep uniformity in rotating the handwheel process all the time, therefore make the dynamometer displacement (deformation quantity of unit under test) that records inhomogeneous, thereby influenced the precision of measuring;
2, the displacement initial zero of unit under test is difficult determines: this instrument is a deformation quantity of measuring unit under test with the vernier caliper that a numeral shows, in theory, when dynamometer is exactly the zero point of displacement when just running into measured piece and not having reinforcing, the user should detect by an unaided eye and accurately judged the position of this some this moment, then with hand by setting button the zero point on the vernier caliper.Yet, in practice,,, bring error all can for the setting at zero point as operator's experience, the quality of operator's eyesight and the bright degree of ambient light etc. owing to be subjected to human factor and Effect of Environmental;
3, the time of single measurement is longer: this instrument requires the user will rotate handwheel at leisure when measuring, and to get a load of very much the descending process of dynamometer simultaneously, set the displacement initial zero exactly, this mode has increased the time of each measurement, is unfavorable for streamline production;
4, inconvenient operation:,, thereby make operation seem extremely inconvenient so when measuring, the user wants the operational computations machine on the one hand, also will remove to rotate handwheel with hand on the other hand because the result who measures will be further processed by computer.
Summary of the invention:
The technical problem to be solved in the present invention is, provides that a kind of certainty of measurement height, displacement initial position are easily determined, the single testing time is short and operation loud speaker centring disk and vibrating diaphragm elasticity tester more simply and easily.
Technical solution of the present invention is that a kind of loud speaker centring disk and vibrating diaphragm elasticity tester with following structure is provided: it comprises by data processing equipment, force application apparatus and device for measuring force that is mutually permanently connected and range unit; Described device for measuring force is connected with data processing equipment by data wire respectively with range unit; Described force application apparatus comprises base, be fixed on that framework on the base and one are connected with single-chip microcomputer and the stepping motor of the drive pulse signal control that produced by single-chip microcomputer; Described stepping motor is installed on the framework; The rotating shaft of described stepping motor is fixedlyed connected with range unit; Be connected with a level transferring chip between described data processing equipment and the single-chip microcomputer; Described single-chip microcomputer and stepping motor all are electrically connected with the power drives unit.
After adopting above structure, compared with prior art, the present invention has the following advantages:
1, drives by pulse signal owing to stepping motor, each pulse can drive stepping motor be changeed certain angle (for example 0.09 degree is changeed in each pulse), and the frequency of pulse signal is produced and is sent by single-chip microcomputer, it is very high that the precision of this pulse signal can be done, speed when therefore the present invention can guarantee that dynamometer in the device for measuring force moves down is very even, make dynamometer move down the uneven defective of speed thereby effectively overcome prior art because armrest rotates handwheel, improved certainty of measurement of the present invention greatly.
2, can only estimating the push rod of judging under the dynamometer with eyes with prior art, whether to have run into measurand different, because the present invention comes the control step motor by single-chip microcomputer, therefore moving down of dynamometer not only can be very even on the device for measuring force, and can reach enough slowly, therefore when dynamometer is just run into measurand, computer program in the data processing equipment just can be to the vernier caliper zero clearing in the range unit, thereby not only make the displacement initial position determine to become than being easier to, and significantly reduced human error and and environmental error, improved certainty of measurement of the present invention;
3, the present invention has not only cancelled handwheel, and need not the testing staff and go to set zero point by range estimation, thus the time of single measurement shorten greatly, thereby improved operating efficiency of the present invention;
4, behind the employing stepping motor, the testing staff only needs the control data processing unit just, is then all controlled by data processing equipment as for the everything of mechanical part, and relatively prior art is convenient, simple in operation therefore of the present invention.
As a kind of improvement of the present invention, described stepping motor is provided with upper limit position switch and lower position switch; The P16 pin of described single-chip microcomputer links to each other with upper limit position switch by interface J2; The P17 pin of described single-chip microcomputer links to each other with lower position switch by interface J2; 2 ends on the described interface J2 and 2 ends are ground connection simultaneously; The P17 pin of described single-chip microcomputer and P16 pin also respectively by on resistance R 3 and R2 and the power drives unit+the 5V end links to each other.When dynamometer ran to highest point or lowest part with the trip card, if stepping motor still rotates under pulse signal drives, stepping motor generated heat easily and damages; In addition; because dynamometer is a precision instrument; if the slide block run location is low excessively; dynamometer is subjected to excessive active force easily and damages; and this improvement of the present invention is exactly in order to solve above two problems; its closure by upper limit position switch and lower position switch changes the level on single-chip microcomputer P17 pin and the P16 pin; and the employing of single-chip microcomputer internal processes is the mode that regularly detects; when the level when finding that stepping motor runs to upper limit position switch or lower position switch on single-chip microcomputer P17 pin or the P16 pin changes; the Single-chip Controlling program produces external interrupt; thereby allow single-chip microcomputer send counter-rotational signal; making stepping motor change other direction into rotates; thereby effectively prevent the situation that stepping motor still rotated according to former direction when dynamometer and trip card ran to highest point or lowest part; avoid stepping motor heating and damage, and protected dynamometer.
Description of drawings:
Fig. 1 is the structural representation of loud speaker centring disk of the present invention and vibrating diaphragm elasticity tester.
Fig. 2 is the circuit catenation principle figure of single-chip microcomputer and level transferring chip among the present invention.
Shown in the figure: 1011,1012, data wire, 102, base, 103, the digital display dynamometer, 104, framework, 105, stepping motor, 106, single-chip microcomputer, 107, level transferring chip, 108, upper limit position switch, 109, upper limit position switch, 110, fore-set, 111, measured piece, 112, holder, 113, LCDs, 114, digital display calliper, 115, computer, 116, slide block, 117, the trip card, 118, screw mandrel, 119, connecting rod, 120, the power drives unit.
Embodiment:
The invention will be further described below in conjunction with the drawings and specific embodiments:
As shown in Figure 1, in this embodiment, the present invention includes device for measuring force, range unit, data processing equipment and force application apparatus.Described device for measuring force comprises a digital display dynamometer 103 and fore-set 110; Described fore-set 110 tops are fixedly connected on digital display dynamometer 103 bottoms, and the bottom of described fore-set 110 is corresponding to measured piece 111; Described measured piece 111 is fixed on holder 112; Described digital display dynamometer 103 is provided with a LCDs 113; Described digital display dynamometer 103 is connected with data processing equipment by data wire 1011.Described range unit comprises digital display calliper 114; Described digital display calliper 114 is vertically fixed on the base 102; Described digital display dynamometer 103 blocks 117 by a slide block 116 with the trip of digital display calliper 114 fixedlys connected; Described digital display calliper 114 is connected with data processing equipment by data wire 1012.Described force application apparatus comprises base 102, is fixed on framework 104 and stepping motor 105 on the base 102; Described stepping motor 105 is installed on the framework 104, and is connected on the single-chip microcomputer 106 by holding wire, and this stepping motor 105 is subjected to the control of the drive pulse signal of single-chip microcomputer 106 generations; Be connected with a level transferring chip 107 between described data processing equipment and the single-chip microcomputer 106; Described single-chip microcomputer 106 and stepping motor 105 all are electrically connected with power drives unit 120.In this embodiment, described data processing equipment is a computer 115.The rotating shaft of described stepping motor 105 is connected with range unit, and its connected mode is the ball screw assembly, connected mode, and promptly the screw mandrel on the ball screw assembly, 118 is fixedlyed connected with the rotating shaft of stepping motor 105; Nut on the described ball screw assembly, is fixedlyed connected with connecting rod 119 or is made of one; Described connecting rod 119 is fixedlyed connected with trip card 117.
As shown in Figure 2, be connected with a crystal resonator Y1 between the X1 pin of described single-chip microcomputer 106 and the X2 pin, the two ends of described crystal resonator Y1 series capacitance C1 respectively are connected with ground with capacitor C 2 backs, and its effect is the required clock pulse of generation drive stepping motor 105.Described stepping motor 105 is connected with single-chip microcomputer 106 and adopts following concrete structure: the P10 pin of described single-chip microcomputer 106 passes through interface J1 and is connected with the shift pulse input cp of stepping motor 105, thereby provides displacement pulse signals for stepping motor 105; The P11 pin of described single-chip microcomputer 106 is by the direction level control end dir of interface J1 and stepping motor 105, thus the rotation direction of control step motor 105.
Described stepping motor 105 is provided with upper limit position switch 108 and lower position switch 109; The P16 pin of described single-chip microcomputer 106 links to each other with upper limit position switch 8 by interface J2; The P17 pin of described single-chip microcomputer 106 links to each other with lower position switch 109 by interface J2; 2 ends on the described interface J2 and 3 ends are ground connection simultaneously; The P17 pin of described single-chip microcomputer 106 and P16 pin also respectively by on resistance R 3 and R2 and the power drives unit 120+the 5V end links to each other.
Be connected with a level transferring chip 107 between described data processing equipment and the single-chip microcomputer 106, its model is adopted as MAX232, its effect is the mutual conversion that realizes Transistor-Transistor Logic level and RS232-C level, described RS232-C level is the level that computer can be used, and described Transistor-Transistor Logic level is the level that single-chip microcomputer 106 can be used.In this embodiment, the RXD pin of described single-chip microcomputer 106 links to each other with the R2OUT pin of level transferring chip 107; The TXD pin of described single-chip microcomputer 106 links to each other with the T2IN pin of level transferring chip 107; The R2IN pin of described level transferring chip 107 links to each other with data receiving terminal IN in the data processing equipment by interface J3; The T2OUT pin of described level transferring chip 107 links to each other with data sending terminal OUT in the data processing equipment by interface J3; Be connected with electrochemical capacitor C5 between 2 pin of described level transferring chip 107 and 6 pin; Be connected with electrochemical capacitor C7 between 6 pin of described level transferring chip 107 and 15 pin; Be connected with electrochemical capacitor C4 between the C1+ pin of described level transferring chip 107 and the C1-pin; Be connected with electrochemical capacitor C6 between the C2+ pin of described level transferring chip 107 and the C2-pin.The model of single-chip microcomputer described in the present invention 106 can adopt AT89C52 or AT89S52, and in this embodiment, the model of described single-chip microcomputer 106 is adopted as AT89C52.
In addition, in this embodiment, be in series with light-emitting diode D1 and resistance R 1 between the P13 pin of described single-chip microcomputer 106 and the ground, thereby play the effect whether indication single-chip microcomputer 106 works.When being in series with resistance R 4 between the RESET pin of described single-chip microcomputer 106 and the ground, also by electrochemical capacitor C3 and power drives unit 120+5V holds and is connected, the effect of this structure is to impel single-chip microcomputer 106 to carry out a reset operation after powering on, thereby makes program carry out initial work.Described power drives unit 120+5V end also links to each other with the P12 pin of single-chip microcomputer 106 and the oedoeagus OPTO of stepping motor 105, thereby provide+the 5V working power is to the segmentation device in single-chip microcomputer 106 and the stepping motor 105, because described power drives unit 120 is a kind of voltage stabilizing circuits of the prior art, so do not give unnecessary details at this.
Operation principle of the present invention is:
It is the control of the computer instruction of sending that the operating state of described single-chip microcomputer 106 is subjected to data processing equipment, single-chip microcomputer 106 is carried out the block of appointment according to the specific command byte that receives, thereby the P10 pin of single-chip microcomputer 106 and P11 pin are exported corresponding pulse signal and counter-rotating level respectively, and then the operating state of control step motor 105; The required drive pulse signal of described stepping motor 105 is produced by the internal clocking of single-chip microcomputer 106.After described single-chip microcomputer 106 powers on, at first to carry out reset operation, thereby make program carry out initialization section, initialization finishes the back program and enters the instruction that idle pulley waits for that computer 115 is sent.In the present invention, pulse frequency and direction level that the different operating state of stepping motor 105 is corresponding different, and each frequency produces by Single Chip Microcomputer (SCM) program control.
According to above-mentioned operation principle, the course of work of loud speaker centring disk of the present invention and vibrating diaphragm elasticity tester is:
At first give an order to single-chip microcomputer 106 by level transferring chip 107 by computer 115, then single-chip microcomputer 106 sends pulse enable signal stepping motor 105 to stepping motor 105 and evenly rotates, and then drive screw mandrel 118 uniform rotation, the motion of screw mandrel 118 drives slide block 116 and moves down, and drives trip card 117 and digital display dynamometer 103 simultaneously and moves downward; When the fore-set 110 of digital display dynamometer 103 bottoms had just been run into measured piece 111, computer program will be automatically the reading zero clearing of vernier caliper, thereby determined the displacement initial zero of measured piece 111.Meanwhile, computer 115 reading that begins to begin to gather on digital display dynamometer 103 and the digital display calliper 114 by data wire 1011,1012 is active force and shift value.After one-shot measurement is finished, the user sends the order that stops to test by computer 115 to single-chip microcomputer 106, single-chip microcomputer 106 sends the pulse signal of inverted running to stepping motor 105, under this signal effect, stepping motor 105 backward rotation, screw mandrel 118 is backward rotation also, thereby drives slide block 16, trip card 117, upwards operation of digital display dynamometer 103.After the fore-set 110 of dynamometer bottom breaks away from measured piece 111, computer program is given an order to single-chip microcomputer 106, single-chip microcomputer 106 sends stop signal to stepping motor 105, stepping motor 105 stops operating, one-shot measurement is finished like this, computer 115 enters wait state after finishing the processing that measurement result is carried out, and prepares to carry out measurement next time.
Claims (7)
1. loud speaker centring disk and vibrating diaphragm elasticity tester comprise by data processing equipment, force application apparatus and device for measuring force that is mutually permanently connected and range unit; Described device for measuring force is connected with data processing equipment by data wire (1011,1012) respectively with range unit; Described force application apparatus comprises base (102) and is fixed on framework (104) on the base (102), it is characterized in that: described force application apparatus also comprises the stepping motor (105) of a drive pulse signal control that is connected with single-chip microcomputer (106) and is produced by single-chip microcomputer (106); Described stepping motor (105) is installed on the framework (104); Described stepping motor (105) rotating shaft is fixedlyed connected with range unit; Be connected with a level transferring chip (107) between described data processing equipment and the single-chip microcomputer (106); Described single-chip microcomputer (106) and stepping motor (105) all are electrically connected with power drives unit (120).
2. loud speaker centring disk according to claim 1 and vibrating diaphragm elasticity tester is characterized in that: described drive pulse signal is produced by single-chip microcomputer (106) and refers to, is connected with a crystal resonator Y1 between the X1 pin of described single-chip microcomputer (106) and the X2 pin; The two ends of described crystal resonator Y1 series capacitance C1 respectively are connected with ground with capacitor C 2 backs.
3. loud speaker centring disk according to claim 1 and vibrating diaphragm elasticity tester, it is characterized in that: described stepping motor (105) is connected with single-chip microcomputer (106) and refers to, the P10 pin of described single-chip microcomputer (106) is connected with the shift pulse input cp of stepping motor (105) by interface J1; The P11 pin of described single-chip microcomputer (106) is connected with the direction level control end dir of stepping motor (105) by interface J1.
4. according to claim 1 or 3 described loud speaker centring disk and vibrating diaphragm elasticity testers, it is characterized in that: described stepping motor (105) is provided with upper limit position switch (108) and lower position switch (109); The P16 pin of described single-chip microcomputer (106) links to each other with upper limit position switch (108) by interface J2; The P17 pin of described single-chip microcomputer (106) links to each other with lower position switch (109) by interface J2; 2 ends on the described interface J2 and 3 ends are ground connection simultaneously; The P17 pin of described single-chip microcomputer (106) and P16 pin also respectively by on resistance R 3 and R2 and power drives unit (120)+the 5V end links to each other.
5. loud speaker centring disk according to claim 1 and vibrating diaphragm elasticity tester, it is characterized in that: be connected with a level transferring chip (107) between described data processing equipment and the single-chip microcomputer (106) and refer to, the RXD pin of described single-chip microcomputer (106) links to each other with the R2OUT pin of level transferring chip (107); The TXD pin of described single-chip microcomputer (106) links to each other with the T2IN pin of level transferring chip (107); The R2IN pin of described level transferring chip (107) links to each other with data receiving terminal IN in the data processing equipment by interface J3; The T2OUT pin of described level transferring chip (107) links to each other with data sending terminal OUT in the data processing equipment by interface J3.
6. loud speaker centring disk and vibrating diaphragm elasticity tester according to claim 1 or 5, it is characterized in that: the model of described level transferring chip (107) is MAX232.
7. according to claim 1 or 2 or 3 or 5 described loud speaker centring disk and vibrating diaphragm elasticity testers, it is characterized in that: the model of described single-chip microcomputer (106) is AT89C52 or AT89S52.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101648191A CN101212839B (en) | 2007-12-25 | 2007-12-25 | Speaker spider and vibrating membrane flexibility tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101648191A CN101212839B (en) | 2007-12-25 | 2007-12-25 | Speaker spider and vibrating membrane flexibility tester |
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| Publication Number | Publication Date |
|---|---|
| CN101212839A true CN101212839A (en) | 2008-07-02 |
| CN101212839B CN101212839B (en) | 2011-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101648191A Active CN101212839B (en) | 2007-12-25 | 2007-12-25 | Speaker spider and vibrating membrane flexibility tester |
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| Country | Link |
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| CN (1) | CN101212839B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103079152A (en) * | 2013-01-09 | 2013-05-01 | 嘉善恩益迪电声技术服务有限公司 | Loudspeaker centering support sheet and paper basin folding ring compliance test instrument and compliance factor calculating method |
| CN105263095A (en) * | 2015-10-15 | 2016-01-20 | 浙江中科电声研发中心 | Measuring system for loudspeaker component stiffness coefficient and calculating method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052587C (en) * | 1998-05-18 | 2000-05-17 | 中国科学院等离子体物理研究所 | Chip microprocessor accurately controlled stepping motor system |
| CN1303433C (en) * | 2004-05-27 | 2007-03-07 | 中国科学院长春光学精密机械与物理研究所 | Double light path laser Doppler velocimeter capable of measuring speed for moving object of different distances |
| CN2864659Y (en) * | 2005-12-13 | 2007-01-31 | 宁波东威电子有限公司 | Speaker centring support sheet and vibrating diaphragm folding ring elasticity tester |
| CN201150131Y (en) * | 2007-12-25 | 2008-11-12 | 宁波东威电子有限公司 | Loudspeaker centring branch piece and diaphragm elastic tester |
-
2007
- 2007-12-25 CN CN2007101648191A patent/CN101212839B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103079152A (en) * | 2013-01-09 | 2013-05-01 | 嘉善恩益迪电声技术服务有限公司 | Loudspeaker centering support sheet and paper basin folding ring compliance test instrument and compliance factor calculating method |
| CN103079152B (en) * | 2013-01-09 | 2015-06-24 | 嘉善恩益迪电声技术服务有限公司 | Loudspeaker centering support sheet and paper basin folding ring compliance test instrument and compliance factor calculating method |
| CN105263095A (en) * | 2015-10-15 | 2016-01-20 | 浙江中科电声研发中心 | Measuring system for loudspeaker component stiffness coefficient and calculating method thereof |
| CN105263095B (en) * | 2015-10-15 | 2018-09-25 | 浙江中科电声研发中心 | Loudspeaker assembly stiffness factor measuring system and computational methods |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101212839B (en) | 2011-11-16 |
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Owner name: NINGBO TONWEL AUDIO CO., LTD. Free format text: FORMER OWNER: NINGBO TONVER ELECTRONICS CO., LTD. Effective date: 20121205 |
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Effective date of registration: 20121205 Address after: 315191 Yinzhou District science and Technology Park, Ningbo Town, Zhejiang Patentee after: Ningbo Tonwel Audio Co., Ltd. Address before: 315191 Ningbo Province, Yinzhou District City, Jiang Shan town, West Road, No. 28, No. Patentee before: Ningbo Tonver Electronics Co., Ltd. |