CN101823056A - Full-automatic microphone testing machine - Google Patents
Full-automatic microphone testing machine Download PDFInfo
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Abstract
The invention discloses a full-automatic microphone testing machine, comprising a mechanical feed system, a mechanical testing system, a mechanical sorting system, a polarity judgment module, a conversion amplifying module, an AD acquisition module and a PLC computing control module, wherein the mechanical testing system comprises a graduated turntable, a test probe and an auxiliary test unit. In the invention, the graduated turntable is adopted to carry out rotary accurate feeding and discharging control on a microphone; the test probe is combined with the auxiliary test unit together to carry out performance test on the microphone so as to acquire the performance information of the microphone product; the polarity judgment module, the conversion amplifying module, the AD acquisition module and the PLC computing control module are utilized to automatically judge, process and analyze the information so as to obtain the product features of each microphone; and finally the mechanical sorting system is used for sorting according to the product features so as to realize the automatic testing and sorting function of the microphone.
Description
Technical field
The present invention relates to the testing equipment art of electret microphone (miaow head), refer in particular to a kind of full-automatic microphone testing machine.
Background technology
Current, miaow head (electret microphone) has been widely used on the multiple electronic digital products such as mp3, mp4, digital camera, telephone set.Along with the continual renovation of development of technology, demand, the kind of miaow head is also more and more: unidirectional miaow, two-way miaow, anti-noise miaow, silicon wafer miaow, ultrasonic miaow, infrasonic sound miaow, standard miaow are too numerous to enumerate.
In the production process of miaow head, the testing, sorting that is directed to the miaow head is one of wherein very important operation, and miaow head test at present has three kinds of test modes: adopt the sensitivity test instrument to carry out manual test; Zhejiang University's sweep generator manual test; Auto testing instrument in the market.Traditional detection method be with manually to each electret microphone according to its 1kHz and 70Hz Sensitirity va1ue, frequency response, indexs such as operating current are classified.This method operating efficiency is on the low side, and labour cost is higher, and introduces operating personnel's subjective error easily, makes the oeverall quality of product, competitiveness be affected.Zhejiang University's sweep generator testing time is long, and test environment is required height, and only suitable specialities detect and laboratory measures, and are not suitable for the product lot quantity inspection; Auto testing instrument is to change automatic measurement on Zhejiang University's test macro in the market, and owing to the mode that adopts frequency sweep is measured, environment is big to the measurement result influence, causes its measurement result inaccurate; Often there is the situation of failing to judge, judging by accident to occur; Can't check out to the gas leakage product simultaneously.In addition, the product that the existing market auto testing instrument is checked out also needs manual detection, thereby can not satisfy the customer requirement that promotes day by day fully, does not have the market competitiveness.
Summary of the invention
Main purpose of the present invention provides a kind of full-automatic microphone testing machine, and it adopts full intellectualized operation task, not only efficient height, and precision height.
For achieving the above object, the present invention adopts following technical scheme:
A kind of full-automatic microphone testing machine comprises mechanical part and electric part, and this mechanical part includes mechanical feed system, mechanical test system and mechanical sorting system; This electric part includes polarity discriminating module, conversion amplification module, AD acquisition module and PLC s operation control module; Wherein
This mechanical test system includes calibration rotating disk, test probe and auxiliary test unit, the calibration rotating disk is provided with a plurality of locating slots that are used to take in and drive the rotation of miaow head of circumferential distribution, and the mechanical test system is disposed with a feed zone, a test section and a discharge zone at least by the rotation direction of this calibration rotating disk; The output of aforementioned mechanical feed system connects this feed zone, and relative this test section with auxiliary test unit of this test probe is provided with; One end of test probe is used for stretching into the polarity contact that the miaow head is pricked in the test section, and the other end of test probe connects this polarity discriminating module and conversion amplification module; This auxiliary test unit is used for the miaow head work done to the test section, makes the voltage or the current signal of the output of miaow head be delivered to the conversion amplification module by test probe; The output of this polarity discriminating module is connected in the conversion amplification module, is used for giving the conversion amplification module with the polarity discriminating result transmission of miaow head;
The output of this conversion amplification module is connected in the AD acquisition module, exports to the AD acquisition module after being used for voltage or current signal changed amplification; The output of AD acquisition module is connected in PLC s operation control module, and this PLC s operation control module is used for the data that the AD acquisition module is gathered are carried out computing, and analyzes the product performance of each miaow head;
The input of this mechanical sorting system connects the discharge zone of aforementioned calibration rotating disk, and the mechanical sorting system includes the rewinding box according to the product performance setting of miaow head.
As a kind of preferred version, described calibration rotating disk is the round turntable of the 360 degree quarterings, further is provided with material waiting section between feed zone on the calibration rotating disk and the test section.
As a kind of preferred version, described locating slot is in the short slot of the side direction upper shed of calibration rotating disk.
As a kind of preferred version, described test probe is to be installed on the pneumatic slide unit.
As a kind of preferred version, the rotation system of described calibration rotating disk is by one first step motor control.
As a kind of preferred version, described mechanical part further includes a man-machine interface operating system, and this man-machine interface operating system includes shift knob and touch-screen.
As a kind of preferred version, described mechanical feed system includes vibrating disk and straight line shaking device, and the output of vibrating disk is connected in the input of straight line shaking device, and the output of straight line shaking device is connected in the feed zone of aforementioned calibration rotating disk.
As a kind of preferred version, described PLC s operation control module is connected in aforementioned mechanical feed system, mechanical test system, mechanical sorting system and AD acquisition module, also is used to control the moving of rotation, test probe of feeding, the calibration rotating disk of mechanical feed system.
As a kind of preferred version, described mechanical sorting system further includes material separating disc and material toggling head, be connected by a tremie pipe between the calibration rotating disk of material separating disc and top, the upper end of tremie pipe is connected in the discharge zone of calibration rotating disk, the tremie pipe lower end is installed on the material toggling head, this material toggling head is arranged on the material separating disc, and this material toggling head is being driven by one second stepper motor and rotating; Material separating disc is provided with a plurality of blanking holes, and these a plurality of blanking holes circumferentially distribute around the rotating shaft of this material toggling head, and each blanking hole is connected with the rewinding box of below by a sub-feed tube respectively.
As a kind of preferred version, described auxiliary test unit is the independent operatic tunes or blowning installation, and this independent operatic tunes is used for the miaow hair sound to the test section, and blowning installation is used for the miaow head of test section is blown.
The present invention compared with prior art has tangible advantage and beneficial effect, particularly, as shown from the above technical solution, it mainly is to adopt the calibration rotating disk that the miaow head is rotated accurate charging of formula and discharging control, and come the miaow head is carried out performance test in conjunction with test probe, auxiliary test unit, in order to the properties of product information of obtaining the miaow head, and utilize polarity discriminating module, conversion amplification module, AD acquisition module and PLC s operation control module to come these information is judged automatically, handled and analyzes, and then draw the product performance of each miaow head; Utilize the mechanical sorting system to carry out sorting again, thereby realize the automatic testing, sorting function of miaow head according to its product performance.Its whole test process adopts full intellectualized automatic operation, and that can avoid effectively that human factor brings is bad, not only have splendid test accuracy, and testing, sorting speed is fast, efficient is high.
For more clearly setting forth architectural feature of the present invention and effect, the present invention is described in detail below in conjunction with accompanying drawing and specific embodiment:
Description of drawings
Fig. 1 is the three-dimensional diagrammatic sketch of frame for movement of the present invention's embodiment;
Fig. 2 is the stereochemical structure diagrammatic sketch of the present invention's embodiment mechanical test system and mechanical sorting system;
Fig. 3 is the stereochemical structure diagrammatic sketch of the present invention's embodiment mechanical feed system and mechanical test system;
Fig. 4 is the frame principle figure of the present invention's embodiment.
The accompanying drawing identifier declaration:
10, mechanical feed system 263, test section
11, vibrating disk 264, discharge zone
12, straight line shaking device 27, pneumatic slide unit
20, mechanical test system 30, mechanical sorting system
21, calibration rotating disk 31, material separating disc
22, test probe 311, blanking hole
23, the independent operatic tunes 32, material toggling head
24, blowning installation 33, rewinding box
25, first stepper motor 34, tremie pipe
261, feed zone 35, sub-feed tube
262, material waiting section 36, second stepper motor
40, polarity discriminating module 80, man-machine interface operating system
50, conversion amplification module 81, shift knob
60, AD acquisition module 82, touch-screen
70, PLC s operation control module 90, frame
The specific embodiment
At first, please refer to Fig. 1 to shown in Figure 4, it has demonstrated the concrete structure of the present invention's preferred embodiment, and this full-automatic microphone testing machine includes the two large divisions, is respectively: mechanical part and electric part.This mechanical part includes frame 90 and the mechanical feed system 10,20 mechanical sorting systems 30 of mechanical test system and the man-machine interface operating system 80 that are arranged on the frame 90; This electric part includes polarity discriminating module 40, conversion amplification module 50, AD acquisition module 60 and PLC s operation control module 70.
Wherein, this mechanical feed system 10 is used for the miaow head overturn and sends into the mechanical test system 20 of postorder seriatim after the queuing.Mechanical feed system 10 includes vibrating disk 11 and straight line shaking device 12, and the output of vibrating disk 11 is connected in the input of straight line shaking device 12, and the output of straight line shaking device 12 is connected in the feed zone 261 of following calibration rotating disk 21.Because the miaow head profile of different model has nothing in common with each other, so the design department of vibrating disk 11 can corresponding adjustment and variation according to its profile or center of gravity difference.
This mechanical test system 20 includes calibration rotating disk 21, test probe 22 and auxiliary test unit, the calibration rotating disk 21 of present embodiment is the round turntable of the 360 degree quarterings, the rotation system of calibration rotating disk 21 is by 25 controls of first stepper motor, calibration rotating disk 21 is provided with a plurality of locating slots that are used to take in and drive the rotation of miaow head of circumferential distribution, and the locating slot in the present embodiment is in the short slot of the side direction upper shed of calibration rotating disk.Rotation direction by this calibration rotating disk 21 is disposed with feed zone 261, material waiting section 262, test section 263 and discharge zone 264, the output of aforementioned straight line shaking device 12 connects this feed zone 261, after the miaow head is admitted to this feed zone, under the induced effect of the locating slot on the calibration rotating disk 21, the miaow head is delivered to feed zone 261, material waiting section 262, test section 263 and discharge zone 264 successively.
This test probe 22 and auxiliary test unit are provided with respect to this test section 263.Wherein, this test probe 22 is installed in one and is positioned on the pneumatic slide unit 27 of aforementioned calibration rotating disk 21 tops, is realized the lifting of test probe 22 by cylinder.The lower end of test probe 22 is used for stretching into the polarity contact that the miaow head is pricked in test section 263, and the other end of test probe 22 connects this polarity discriminating module 40 and conversion amplification module 50.
This auxiliary test unit is used for the miaow head work done to test section 263, makes the voltage of miaow head output or current signal be delivered to conversion amplification module 50 by test probe 22.Auxiliary test unit in the present embodiment mainly includes the independent operatic tunes 23 and blowning installation 24, this independent operatic tunes 23 is used for the miaow hair sound to test section 263, makes miaow head output 1KHZ, 70HZ or FET current signal be delivered to conversion amplification module 50 by test probe 22.This blowning installation 24 is used for the miaow head of test section 263 is blown, and makes the voltage of miaow head output or current signal be delivered to conversion amplification module 50 by test probe 22.Blowning installation 24 is to be made up of an air compressor, and the frequency that the gas of this compressor flows out is preferably near 70HZ, can detect the miaow head product not tight to crimping thus.Certainly auxiliary test unit not only is confined to the independent operatic tunes 23 and blowning installation 24, and it also can adjust according to the needs of the actual test of product and change.
The output of this polarity discriminating module 40 is connected in conversion amplification module 50, in the polarity discriminating module 40 with the working procedure software of polarity discriminating, current ratio by FET can accurately be found out the both positive and negative polarity of electret and be delivered to conversion amplification module 50 switching with several auxiliary reclays.
The output of this conversion amplification module 50 is connected in AD acquisition module 60, exports to AD acquisition module 60 after being used for voltage or current signal changed amplification.
The output of this AD acquisition module 60 connects this PLC s operation control module 70, and the voltage or the current digital signal that are used for collecting are transferred to PLC s operation control module 70.
This PLC s operation control module 70 has high-speed computation comparison and control function, be used for the data that AD acquisition module 60 is gathered are carried out computing and comparison and analyzed product performance on the one hand, the Sensitirity va1ue (DB) and the current value (uA) that draw accurate 1KHZ and 70HZ are transferred to man-machine interface 80 demonstrations; PLC s operation control module 70 is connected in aforementioned mechanical feed system 10, mechanical test system 20 and mechanical sorting system 30 on the other hand, also be used to control the moving of rotation, test probe 22 of feeding, the calibration rotating disk 21 of mechanical feed system 10, each mechanical action such as sub-material of mechanical sorting system 30, and corresponding also to the complete machine platform action carry out along control control.
This mechanical sorting system 30 includes material separating disc 31, material toggling 32 and rewinding box 33, material separating disc 31 be positioned at aforementioned calibration rotating disk 21 under, material separating disc 31 in the present embodiment is provided with ten blanking holes 311, is connected by a tremie pipe 34 between the calibration rotating disk 21 of material separating disc 31 and top.The upper end of tremie pipe 34 is connected in the discharge zone 264 of calibration rotating disk 21, the lower end of tremie pipe 34 is installed on the material toggling 32, this material toggling 32 is arranged on the material separating disc 31, this material toggling 32 is being driven by one second stepper motor 36 and is rotating, and these ten blanking holes 311 circumferentially distribute around the rotating shaft of this material toggling 32.Send instruction control second stepper motor 36 by PLC s operation control module 70 and drive material toggling 32 rotation, the miaow head of corresponding product characteristic is dialled in the corresponding blanking hole 311.
This rewinding box is positioned at the below of this material separating disc, present embodiment is provided with ten rewinding boxes 33 altogether according to the difference of product performance, be respectively the standby box 1., good mouthful of box 2., the non-defective unit box 3., the non-defective unit box 4., the non-defective unit box 5., the non-defective unit box 6., the non-defective unit box 7., high frequency gas leakage box 8., big electric current box 9. with the defective products box 10., these rewinding boxes are connected in ten blanking holes 311 of aforementioned material separating disc 31 respectively by sub-feed tube 35 separately.The miaow head of falling in this blanking hole 311 falls into the rewinding box 33 of corresponding product characteristic by sub-feed tube 35 separately, mat and realize the sorting function of miaow head.
This man-machine interface operating system 80 includes shift knob 81 and touch-screen 82, and shift knob 81 is used for the switch of power supply and the startup of board stops control, 82 manipulations that are used for manual activity of touch-screen, the change of the demonstration of product parameters and PLC inner parameter etc.Have characteristics such as easy to use, safe, man-machine touch-control is simple, thereby having solved board controls loaded down with trivial details problem, its picture of while very coloured silk represents, and parameter information comes into plain view, and has hommization.
Next, operation principle, using method or the course of work of detailed description present embodiment are as follows:
During use, at first send instruction by this PLC s operation control module 70, make vibrating disk 11, straight line shaking device 12 in the mechanical feed system 10 carry out feeding from trend mechanical test system 20, after treating that straight line shaking device 12 is sent a miaow head feed zone 261 of calibration rotating disk 21 to, this calibration rotating disk 21 is by first stepper motor, 25 driven rotary, 90 degree, material waiting section 262, test section 263 and discharge zone 264 have been passed through in charging once more by that analogy respectively.When the miaow head is gone to test section 263, the acting that begins to exert all one's strength of the cylinder on the pneumatic slide unit 27, test probe 22 descends and pricks on the polarity contact of miaow head, carries out polarity discriminating by polarity discriminating module 40 simultaneously, and will differentiate result transmission and give and change amplification module 50.
Begin test then, and successively carry out sounding and the debugging of blowing by the independent operatic tunes 23 and blowning installation 24 respectively, make test probe 22 output 1KHZ, 70HZ and current signal to changing amplification module 50, and by AD acquisition module 60 signals collecting is transferred to PLC s operation control module 70 and carries out digital logical operation, analyze product performance according to the dB value and the current value of test.According to this product performance, PLC s operation control module 70 drives second stepper motor 36, material separating disc 31 and material toggling 32 again the miaow head is sorted in the corresponding rewinding box 33, finishes a test period.
In sum, design focal point of the present invention is, it mainly is to adopt the calibration rotating disk that the miaow head is rotated accurate charging of formula and discharging control, and come the miaow head is carried out performance test in conjunction with test probe, auxiliary test unit, in order to the properties of product information of obtaining the miaow head, and utilize polarity discriminating module, conversion amplification module, AD acquisition module and PLC s operation control module to come these information is judged automatically, handled and analyzes, and then draw the product performance of each miaow head; Utilize the mechanical sorting system to carry out sorting again, thereby realize the automatic testing, sorting function of miaow head according to its product performance.Its whole test process adopts full intellectualized automatic operation, and that can avoid effectively that human factor brings is bad, not only have splendid test accuracy, and testing, sorting speed is fast, efficient is high.
The above, it only is preferred embodiment of the present invention, be not that technical scope of the present invention is imposed any restrictions, so every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any trickle modification, equivalent variations and modification that above embodiment did.
Claims (10)
1. a full-automatic microphone testing machine comprises mechanical part and electric part, it is characterized in that: this mechanical part includes mechanical feed system, mechanical test system and mechanical sorting system; This electric part includes polarity discriminating module, conversion amplification module, AD acquisition module and PLC s operation control module; Wherein
This mechanical test system includes calibration rotating disk, test probe and auxiliary test unit, the calibration rotating disk is provided with a plurality of locating slots that are used to take in and drive the rotation of miaow head of circumferential distribution, and the mechanical test system is disposed with a feed zone, a test section and a discharge zone at least by the rotation direction of this calibration rotating disk; The output of aforementioned mechanical feed system connects this feed zone, and relative this test section with auxiliary test unit of this test probe is provided with; One end of test probe is used for stretching into the polarity contact that the miaow head is pricked in the test section, and the other end of test probe connects this polarity discriminating module and conversion amplification module; This auxiliary test unit is used for the miaow head work done to the test section, makes the voltage or the current signal of the output of miaow head be delivered to the conversion amplification module by test probe; The output of this polarity discriminating module is connected in the conversion amplification module, is used for giving the conversion amplification module with the polarity discriminating result transmission of miaow head;
The output of this conversion amplification module is connected in the AD acquisition module, exports to the AD acquisition module after being used for voltage or current signal changed amplification; The output of AD acquisition module is connected in PLC s operation control module, and this PLC s operation control module is used for the data that the AD acquisition module is gathered are carried out computing, and analyzes the product performance of each miaow head;
The input of this mechanical sorting system connects the discharge zone of aforementioned calibration rotating disk, and the mechanical sorting system includes the rewinding box according to the product performance setting of miaow head.
2. full-automatic microphone testing machine according to claim 1 is characterized in that: described calibration rotating disk is the round turntable of the 360 degree quarterings, further is provided with material waiting section between feed zone on the calibration rotating disk and the test section.
3. full-automatic microphone testing machine according to claim 1 is characterized in that: described locating slot is in the short slot of the side direction upper shed of calibration rotating disk.
4. full-automatic microphone testing machine according to claim 1 is characterized in that: described test probe is to be installed on the pneumatic slide unit.
5. full-automatic microphone testing machine according to claim 1 is characterized in that: the rotation system of described calibration rotating disk is by one first step motor control.
6. full-automatic microphone testing machine according to claim 1 is characterized in that: described mechanical part further includes a man-machine interface operating system, and this man-machine interface operating system includes shift knob and touch-screen.
7. full-automatic microphone testing machine according to claim 1, it is characterized in that: described mechanical feed system includes vibrating disk and straight line shaking device, the output of vibrating disk is connected in the input of straight line shaking device, and the output of straight line shaking device is connected in the feed zone of aforementioned calibration rotating disk.
8. full-automatic microphone testing machine according to claim 1, it is characterized in that: described PLC s operation control module is connected in aforementioned mechanical feed system, mechanical test system, mechanical sorting system and AD acquisition module, also is used to control the moving of rotation, test probe of feeding, the calibration rotating disk of mechanical feed system.
9. full-automatic microphone testing machine according to claim 1, it is characterized in that: described mechanical sorting system further includes material separating disc and material toggling head, be connected by a tremie pipe between the calibration rotating disk of material separating disc and top, the upper end of tremie pipe is connected in the discharge zone of calibration rotating disk, the tremie pipe lower end is installed on the material toggling head, this material toggling head is arranged on the material separating disc, and this material toggling head is being driven by one second stepper motor and rotating; Material separating disc is provided with a plurality of blanking holes, and these a plurality of blanking holes circumferentially distribute around the rotating shaft of this material toggling head, and each blanking hole is connected with the rewinding box of below by a sub-feed tube respectively.
10. full-automatic microphone testing machine according to claim 1 is characterized in that: described auxiliary test unit is the independent operatic tunes or blowning installation, and this independent operatic tunes is used for the miaow hair sound to the test section, and blowning installation is used for the miaow head of test section is blown.
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CN102773219A (en) * | 2011-05-10 | 2012-11-14 | 久元电子股份有限公司 | Device for detecting and sorting light-emitting components |
CN102790942A (en) * | 2012-08-24 | 2012-11-21 | 惠州市金山电子有限公司 | Loudspeaker testing device |
CN103223402A (en) * | 2013-04-28 | 2013-07-31 | 东莞市台工电子机械科技有限公司 | Full automatic digital microphone testing sorter |
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Application publication date: 20100908 |