CN104154948A - Automatic test system for communication product - Google Patents
Automatic test system for communication product Download PDFInfo
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- CN104154948A CN104154948A CN201310178441.6A CN201310178441A CN104154948A CN 104154948 A CN104154948 A CN 104154948A CN 201310178441 A CN201310178441 A CN 201310178441A CN 104154948 A CN104154948 A CN 104154948A
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- shielded box
- test system
- communication product
- counter
- noisemeter
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Abstract
The invention relates to the technical field of communication product tests, specifically to an automatic test system for a communication product. The technical scheme that is adopted is that: the automatic test system includes an isolation box, and a filter and a counter which are connected with the isolation box, wherein the isolation box is internally provided with a noisemeter, an earphone, an antenna, and a power probe; the isolation box is connected with an object device to be tested; the noisemeter and the power probe are connected with the filter; the filter is connected with a power supply and a relay; the relay is connected with a multifunctional digital multimeter and an audio analyzer; the earphone is connected with the noisemeter; the antenna is connected with a frequency mixer; the frequency mixer is connected with the counter and further connected with a radio frequency switcher; and a signal generator is connected and arranged between the radio frequency switcher and the audio analyzer. The beneficial effects of the automatic test system for the communication product are that by adopting the test system, all functions of the communication product can be tested and test results identical to those obtained in standard test rooms can be obtained.
Description
Technical field
The present invention relates to communication product technical field of measurement and test, be specifically related to a kind of communication product Auto-Test System.
Background technology
The test platform of communication products is mainly with test I C bare board, antenna at present ... it is main waiting every part, rarely has finished product test.If cannot really effectively comprehensively control the quality of product but only survey correlated parts, extensively adopt at present the test job of manually carrying out every product in screened room to reduce external interference, this method is time-consuming taking a lot of work not only, and easily produce artificial erroneous judgement.
For above-mentioned problem, need exploitation for the automatic detecting platform of finished product global function (containing radio frequency, voice, power consumption stream ...).And the difficult point of this type of Auto-Test System is that test event is integrated and automatically control afterwards in addition the noise problem of derivative car.
Summary of the invention
The object of the invention is to, propose a kind ofly can carry out the test macro automatically detecting to communication product global function.
For achieving the above object, the invention provides a kind of communication product Auto-Test System, comprise shielded box, be connected the wave filter sum counter arranging with shielded box, in described shielded box, be provided with noisemeter, earphone, antenna, power probe, described shielded box is connected with determinand device, described noisemeter is connected with wave filter respectively with power probe, described wave filter is connected with power supply and relay, described relay is connected with Multifunctional digital universal meter and audio analyzer, described earphone is connected setting with noisemeter, described antenna is connected with a frequency mixer, described mixed gauge is connected with counter, described frequency mixer is also connected with a radio frequency switch, between described radio frequency switch and audio analyzer, be connected with signal generator.
Concrete, described shielded box is metal shielded box, and described shielded box is also connected with a stepper motor, and this stepper motor is connected with a stepper motor driver.
Further, be also provided with reset key and volume knob in described shielded box, described reset key is connected with stepper motor respectively with volume knob.
Further, be also provided with tablet and small-signal control panel in described shielded box, described tablet is connected with radio frequency switch, and described earphone connects noisemeter by small-signal control panel.
Moreover described shielded box inwall is covered with acoustical cotton, described acoustical cotton thickness is 5-15cm.
In the present invention, described determinand device comprises slip test platform, cylinder and thimble, described slip test platform comprises front shroud, the test bench being fixedly connected with front shroud and the sliding bar being fixedly connected with test bench, described sliding bar is connected setting with cylinder, described front shroud is connected setting with thimble, described thimble and sliding bar be arranged in parallel, and described cylinder is connected with a PLC controller respectively with thimble, and described PLC controller is also connected with earphone.
In addition, described counter is frequency counter, and this counter is connected with a gps clock frequency, and described gps clock frequency is connected with a gps antenna.
Further, also comprise PC, scanner and printer, described PC is connected with power supply, Multifunctional digital universal meter, audio analyzer, counter, stepper motor driver, scanner and printer.
Further, described antenna adopts 1/4 wavelength of uhf band, and the copper rod that length is 15-18cm is made.
The present invention has following beneficial effect: adopt metal shielded box, can the mixed and disorderly electromagnetic interference (EMI) of isolating exterior and unknown signal, and in conjunction with the designing impedance matching such as transmission line and antenna and internal electromagnetic interference prevention strategy, can significantly effectively send Radio frequency interference (RFI), radiativity electromagnetic interference (EMI) and conduction electromagnetic interference (EMI), and obtain the measurement result identical with code test chamber, adopt automatic controls to carry out audio frequency measurement simultaneously, can improve accuracy and the repeatability of test result.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is the vertical view of shielded box of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Referring to Fig. 1 and Fig. 2, communication products automatic checkout system provided by the invention, comprise shielded box 7, be connected wave filter 19 sum counters 22 that arrange with shielded box 7, in described shielded box 7, be provided with noisemeter 72, earphone 73, antenna 78, power probe 76, described shielded box 7 is connected with determinand device, described noisemeter 72 is connected with wave filter 19 respectively with power probe 76, described wave filter 19 is connected with power supply 13 and relay 16, described relay 16 is connected with Multifunctional digital universal meter 14 and audio analyzer 15, described earphone 73 is connected setting with noisemeter 72, described antenna 78 is connected with a frequency mixer 23, described mixed gauge 23 is connected with counter 22, described frequency mixer 23 is also connected with a radio frequency switch 18, between described radio frequency switch 18 and audio analyzer 15, be connected with signal generator 17.Adopt this detection system, can detect communication finished product global function (comprising radio frequency, voice, power consumption stream etc.), by determinand is put into shielded box, detect, can the mixed and disorderly electromagnetic interference (EMI) of isolating exterior and unknown signal.
Concrete, the loudspeaker of determinand (not shown) or earphone 73 being carried out to audio frequency while measuring, need to be connected to audio analyzer 15 by relay 16, could by computer automatic switching signal, measure at different time.Loudspeaker or earphone 73 are measured and also to be needed to carry out the measurement of sound size by noisemeter (72) except carrying out audio frequency, and the unit that noisemeter (72) is measured output be decibel, and generally noisemeter (72) to change rear output valve be magnitude of voltage.While detecting the LED characteristics of luminescence of determinand simultaneously, can produce relevant voltage by different aberration and the brightness of photoelectric sensor LED lamp, therefore the loudspeaker of determinand or earphone 73 sound sizes and LED are luminous all to be needed to be switched to Multifunctional digital universal meter 14 by relay 16 and measures detecting, and earphone 73 is connected to by wave filter 19 connection relays 16 interference that audio analyzer 15 can be eliminated noise by noisemeter 72.Power probe 76 connects power supply 13 by wave filter 19, and when the electric current of test determinand, wave filter 19 inputs or outputs electric current through filtration and obtains pure direct current, and the electric current that therefore detects determinand obtains result more accurately.In addition, conduction electromagnetic interference (EMI) is transmitted via power lead, the continuous electromagnetic interference (EMI) producing at the electric device of same electric system can be disturbed each other via power lead, in order doing effectively to suppress to conduction electromagnetic interference (EMI), therefore between electrical equipment and power supply, to install wave filter 19 additional and suppressed.Select wave filter 19 can avoid clutter news damping capacity, and the required noise damping capacity providing of differential mode filter.When detecting the radiofrequency characteristics of determinand, need to detect communication reception and the emission characteristics of determinand, because transmission signal is radiofrequency signal, therefore adopt radio frequency switch 18.During due to detection radiofrequency characteristics, need to measure intermediate frequency error, therefore antenna 78, signal generator 17 need to be connected with counter 22 by frequency mixer 23, could obtain local frequency error via frequency mixer 23, by counter 22, record again, and antenna 78 will be connected to signal generator 17, need through radio frequency switch 18, to switch again by frequency mixer 23.
As a kind of specific embodiment of the present invention, described shielded box 7 is metal shielded box, and the material of shielded box 7 adopts zinc-plated copper coin, copper mesh or MULTILAYER COMPOSITE gold plate, adopts metal shielded box can make electromagnetic wave produce reflection and can not penetrate.Interference, communication network covering area overlapping, side frequency interference because of system external communication frequency interferences signal as strong in the communication of external emission, pirate radio.Therefore adopting metal shielded box is that the external electronic motor of shielded box 7 outsides is disturbed and shielded on the one hand, thereby guarantee that the interior electromagnetism noise of shielded box 7 environment meets test request, be inner to shielded box 7 on the other hand as the emissive sources such as wireless device shield and do not cause to external world interference, allow the interior measurement environment of shielded box 7 as far as possible merely totally.Adopt the maskable frequency range of metal shielded box from 10KHZ to 18GHZ, can meet the scope of volume shielding at 80 to 120 decibels.Described shielded box 7 is also connected with a stepper motor 11, and this stepper motor 11 is connected with a stepper motor driver 12; In described shielded box 7, be also provided with reset key 75 and volume knob 74, described reset key 75 is connected with stepper motor 11 respectively with volume knob 74, by stepper motor driver 12 control step motors 11, reach the more object of fine adjustment volume knob 74 and reset key 75, during stepper motor 11 running, can produce a large amount of power supplys disturbs, the power supply producing when reducing motor running disturbs, therefore the time point that reads measuring value is postponed to approximately 0.5 second, wait measure numerical value beat finish after amount to obtain measured value again.And when design modifying volume knob 74 sleeve, coincide with volume knob 74 switches as far as possible, reduce the situation of skidding and occur.
Further, in described shielded box 7, be also provided with tablet 77 and small-signal control panel 71, described tablet 77 is connected with radio frequency switch 18, described earphone 73 connects noisemeter 72 by small-signal control panel 71, small-signal control panel 71 frames connecting with headphones 73 can be tested the signals such as a local oscillator, two local oscillators, intermediate frequency of determinand, at the interior tablet 77 that arranges of shielded box 7, radio frequency switch 18 can detect the radiofrequency signal receiving in shielded box 7 inside in real time.Described shielded box 7 inwalls are covered with acoustical cotton 6, and described acoustical cotton 6 thickness are 5-15cm, and the preferred thickness of this acoustical cotton 6 is 10cm, pastes the generation that acoustical cotton 6 can reduce sound reflection ripple in shielded box 7, guarantees that test result is more accurate.
In the present invention, when shielded box 7 inner generation Intermodulation Interference and humorous wave interference, though due to this two noises source be self signal intermodulation, with another transmitter signal intermodulation or antenna or connector in intermodulation etc., or near high-power source produces the fundamental frequency harmonics of strong signal in high-power signal harmonic wave, signal etc., all in shielded box 7 inside, when resonance occurs shielded box 7, the shielding benefit of shielded box 7 can decline to a great extent, and can cause the error of test.Such as antenna 78 emissive sources such as grade will produce multipath reflection on shielded box 7 walls, thereby affect test result, often error arrives greatly 30-40 decibel.In the larger shielded box 7 of volume, test, make determinand guarantee that incident is under the prerequisite of plane wave simultaneously, shorten the distance of determinand and receiving antenna 78, so on acoustical cotton 6, add and post absorbing material and can reduce reflection wave.
Further, described determinand device comprises slip test platform, cylinder 9 and thimble 10, described slip test platform comprises front shroud 1, the test bench 2 being fixedly connected with front shroud 1 and the sliding bar 4 being fixedly connected with test bench 2, described sliding bar 4 is connected setting with cylinder 9, described front shroud 1 is connected setting with thimble 10, described thimble 10 be arranged in parallel with sliding bar 4, and described cylinder 9 is connected with a PLC controller 8 respectively with thimble 10, and described PLC controller 8 is also connected with earphone 73; Cylinder 9 is connected with sliding bar 4 to arrange and can regulates slip test platform turnover shielded box 7, and thimble 10 is connected setting with the front shroud 1 of slip test platform, can regulate more accurately position initial in the movable rail of slip test platform, cylinder 9 is connected accurate adjustment slip test platform more with a PLC controller 8 respectively with thimble 10, allow determinand can reach exactly the position of default test, thereby reduce the error that the motion of slip test platform produces.In addition, PLC controller 8 can be controlled earphone 73 plugs, can control earphone 73 limited on the track of plug by PLC controller 8, avoids excessive earphone 73 plugs that cause of side-play amount to wear away.
Moreover described counter 22 is frequency counter, this counter 22 is connected with a gps clock frequency 21, and described gps clock frequency 21 is connected with a gps antenna 20, can realize high-precision frequency and time signal output.Also comprise PC 24, scanner 26 and printer 25, described PC 24 is connected with power supply 13, Multifunctional digital universal meter 14, audio analyzer 15, counter 22, stepper motor driver 12, scanner 26 and printer 25, and scanner 26 is for determinand, before carrying out, to scan the document generating.Multifunctional digital universal meter 14, audio analyzer 15, counter 22, stepper motor driver 12 are preserved test result in PC 24, can print result by printer 25.
In the present invention, described antenna 78 adopts 1/4 wavelength of superfrequency (UHF:Ultra High Frequency) frequency range, length is that the copper rod of 15-18cm is made, antenna 78 is fixed on the position parallel with determinand, between the two from antenna in reference standard laboratory 78 and determinand spacing, and in one end of antenna 78, add that 50 impedances make its transmitting impedance approach as far as possible 50 Europe.And signal source, receiver and frequency mixer 23 are after system has been set up, carry out verification, could start to carry out system trace routine after completing verification.Control line between each parts and signal wire all adopt isolation cable, avoid or lower the interference of radiativity EMI, and strengthen the processing of shielded box 7 ground connection.
In sum, adopt metal shielded box, can the mixed and disorderly electromagnetic interference (EMI) of isolating exterior and unknown signal, and in conjunction with the designing impedance matching such as transmission line and antenna and internal electromagnetic interference prevention strategy, can significantly effectively send Radio frequency interference (RFI), radiativity electromagnetic interference (EMI) and conduction electromagnetic interference (EMI), and obtain the measurement result identical with code test chamber, and adopt automatic controls to carry out audio frequency measurement simultaneously, can improve accuracy and the repeatability of test result.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. communication product Auto-Test System, comprise shielded box (7), be connected wave filter (19) sum counter (22) arranging with shielded box (7), it is characterized in that: in described shielded box (7), be provided with noisemeter (72), earphone (73), antenna (78), power probe (76), described shielded box (7) is connected with determinand device, described noisemeter (72) is connected with wave filter (19) respectively with power probe (76), described wave filter (19) is connected with power supply (13) and relay (16), described relay (16) is connected with Multifunctional digital universal meter (14) and audio analyzer (15), described earphone (73) is connected setting with noisemeter (72), described antenna (78) is connected with a frequency mixer (23), described frequency mixer (23) is connected with counter (22), described frequency mixer (23) is also connected with a radio frequency switch (18), between described radio frequency switch (18) and audio analyzer (15), be connected with signal generator (17).
2. communication product Auto-Test System according to claim 1, it is characterized in that: described shielded box (7) is metal shielded box, described shielded box (7) is also connected with a stepper motor (11), and this stepper motor (11) is connected with a stepper motor driver (12).
3. communication product Auto-Test System according to claim 2, it is characterized in that: in described shielded box (7), be also provided with reset key (75) and volume knob (74), described reset key (75) is connected with stepper motor (11) respectively with volume knob (74).
4. communication product Auto-Test System according to claim 3, it is characterized in that: in described shielded box (7), be also provided with tablet (77) and small-signal control panel (71), described tablet (77) is connected with radio frequency switch (18), and described earphone (73) connects noisemeter (72) by small-signal control panel (71).
5. communication product Auto-Test System according to claim 4, is characterized in that: described shielded box (7) inwall is covered with acoustical cotton (6), and described acoustical cotton (6) thickness is 5-15cm.
6. communication product Auto-Test System according to claim 5, it is characterized in that: described determinand device comprises slip test platform, cylinder (9) and thimble (10), described slip test platform comprises front shroud (1), the test bench (2) being fixedly connected with front shroud (1) and the sliding bar (4) being fixedly connected with test bench (2), described sliding bar (4) is connected setting with cylinder (9), described front shroud (1) is connected setting with thimble (10), described thimble (10) be arranged in parallel with sliding bar (4), described cylinder (9) is connected with a PLC controller (8) respectively with thimble (10), described PLC controller (8) is also connected with earphone (73).
7. communication product Auto-Test System according to claim 6, it is characterized in that: described counter (22) is frequency counter, this counter (22) is connected with a gps clock frequency (21), and described gps clock frequency (21) is connected with a gps antenna (20).
8. communication product Auto-Test System according to claim 7, it is characterized in that: also comprise PC (24), scanner (26) and printer (25), described PC (24) is connected with power supply (13), Multifunctional digital universal meter (14), audio analyzer (15), counter (22), stepper motor driver (12), scanner (26) and printer (25).
9. communication product Auto-Test System according to claim 8, is characterized in that: described antenna (78) adopts 1/4 wavelength of uhf band, and the copper rod that length is 15-18cm is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310178441.6A CN104154948B (en) | 2013-05-14 | 2013-05-14 | Communication product Auto-Test System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310178441.6A CN104154948B (en) | 2013-05-14 | 2013-05-14 | Communication product Auto-Test System |
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| Publication Number | Publication Date |
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| CN104154948A true CN104154948A (en) | 2014-11-19 |
| CN104154948B CN104154948B (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310178441.6A Active CN104154948B (en) | 2013-05-14 | 2013-05-14 | Communication product Auto-Test System |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154085A (en) * | 2016-08-03 | 2016-11-23 | 重庆盟讯电子科技有限公司 | A kind of attachment components and parts detecting system |
| CN108107279A (en) * | 2017-12-20 | 2018-06-01 | 宁波三星医疗电气股份有限公司 | A kind of supplied materials detection method for customizing antenna |
| TWI745982B (en) * | 2020-05-27 | 2021-11-11 | 矽品精密工業股份有限公司 | Test system and method thereof |
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| JPH10282174A (en) * | 1997-04-08 | 1998-10-23 | Ando Electric Co Ltd | Shield box |
| JP2003116176A (en) * | 2001-10-05 | 2003-04-18 | Sony Corp | Communication system, method thereof and communication equipment |
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| CN202035041U (en) * | 2011-05-16 | 2011-11-09 | 杭州厚德通信技术有限公司 | Voice frequency test system of mobile communication terminal |
| CN203327015U (en) * | 2013-05-14 | 2013-12-04 | 重庆盟讯电子科技有限公司 | Automatic testing system of communication product |
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2013
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Patent Citations (5)
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| JPH10282174A (en) * | 1997-04-08 | 1998-10-23 | Ando Electric Co Ltd | Shield box |
| JP2003116176A (en) * | 2001-10-05 | 2003-04-18 | Sony Corp | Communication system, method thereof and communication equipment |
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Non-Patent Citations (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154085A (en) * | 2016-08-03 | 2016-11-23 | 重庆盟讯电子科技有限公司 | A kind of attachment components and parts detecting system |
| CN108107279A (en) * | 2017-12-20 | 2018-06-01 | 宁波三星医疗电气股份有限公司 | A kind of supplied materials detection method for customizing antenna |
| TWI745982B (en) * | 2020-05-27 | 2021-11-11 | 矽品精密工業股份有限公司 | Test system and method thereof |
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| Publication number | Publication date |
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| CN104154948B (en) | 2017-05-31 |
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