CN104154948B - Communication product Auto-Test System - Google Patents
Communication product Auto-Test System Download PDFInfo
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- CN104154948B CN104154948B CN201310178441.6A CN201310178441A CN104154948B CN 104154948 B CN104154948 B CN 104154948B CN 201310178441 A CN201310178441 A CN 201310178441A CN 104154948 B CN104154948 B CN 104154948B
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- shielded box
- counter
- noisemeter
- test
- earphone
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Abstract
The present invention relates to communication product technical field of measurement and test, and in particular to a kind of communication product Auto-Test System；The technical scheme of use is：Including shielded box, with the wave filter and counter of shielded box connect setting, noisemeter is provided with the shielded box, earphone, antenna, power probe, the shielded box is connected with determinand device, the noisemeter and power probe are connected with wave filter respectively, the wave filter is connected with power supply and relay, the relay is connected with Multifunctional digital universal meter and audio analyzer, the earphone and noisemeter connect setting, the antenna is connected with a frequency mixer, the mixed gauge is connected with counter, the frequency mixer is also connected with a radio frequency switch, signal generator is connected between the radio frequency switch and audio analyzer.The beneficial effects of the invention are as follows：Using the detecting system, communication finished product global function can be detected, can obtained and code test room identical measurement result.
Description
Technical field
The present invention relates to communication product technical field of measurement and test, and in particular to a kind of communication product Auto-Test System.
Background technology
The test platform of current communication products is more to be waited based on every part with testing IC bare boards, antenna ..., rarely has finished product to survey
Examination.If widely used at present manually in screened room but only survey correlated parts effectively cannot comprehensively control the quality of product really
In carry out the test job of every product to reduce external interference, this method is not only time-consuming to take a lot of work, and easily produces artificial erroneous judgement.
For above-mentioned problem, it is necessary to develop the automatic inspection for finished product global function (containing radio frequency, voice, power consumption stream ...)
Survey platform.And the difficult point of such Auto-Test System to be test event integrated and derivative noise is asked after being automatically controlled
Topic.
The content of the invention
It is an object of the present invention to propose a kind of test system that automatic detection can be carried out to communication product global function.
To achieve the above object, the present invention provides a kind of communication product Auto-Test System, including shielded box and shielded box
The wave filter and counter of connect setting, are provided with noisemeter, earphone, antenna, power probe, the shielded box in the shielded box
Determinand device is connected with, the noisemeter and power probe are connected with wave filter respectively, and the wave filter is connected with electricity
Source and relay, the relay are connected with Multifunctional digital universal meter and audio analyzer, and the earphone is connected with noisemeter
Set, the antenna is connected with a frequency mixer, the mixed gauge is connected with counter, the frequency mixer also with a radio frequency switch
Connection, signal generator is connected between the radio frequency switch and audio analyzer.
Specifically, the shielded box is metal shielded box, the shielded box is also associated with a stepper motor, the stepper motor
It is connected with a stepper motor driver.
Further, reset key and volume knob are additionally provided with the shielded box, the reset key and volume knob are distinguished
It is connected with stepper motor.
Further, tablet and small-signal control panel are additionally provided with the shielded box, the tablet switches with radio frequency
Device is connected, and the earphone connects noisemeter by small-signal control panel.
Furthermore, the isolation chamber interior wall is covered with acoustical cotton, and the acoustical cotton thickness is 5-15cm.
In the present invention, the determinand device includes sliding test platform, cylinder and thimble, the slip test platform
The test bench being fixedly connected with front shroud including front shroud and the sliding bar being fixedly connected with test bench, the sliding bar and gas
Cylinder connect setting, the front shroud and thimble connect setting, the thimble be arranged in parallel with sliding bar, and the cylinder divides with thimble
It is not connected with a PLC, the PLC is also connected with earphone.
Additionally, the counter is frequency counter, the counter is connected with a gps clock frequency, and the gps clock is frequently
Rate is connected with a gps antenna.
Further, also including PC, scanner and printer, the PC and power supply, Multifunctional digital universal meter, sound
The connection of frequency division analyzer, counter, stepper motor driver, scanner and printer.
Further, the antenna uses 1/4 wavelength of uhf band, and length is made for the copper rod of 15-18cm.
The invention has the advantages that：Using metal shielded box, outside mixed and disorderly electromagnetic interference and not clear letter can be isolated
Number, and the designing impedance matchings such as transmission line and antenna and internal preventing electromagnetic interference strategy are combined, significantly can effectively send
Go out Radio frequency interference, radiativity electromagnetic interference and Contacted EMI, and obtain with code test room identical measurement result,
Audio measurement is carried out using automatic controls simultaneously, the accuracy and repeatability of test result can be improved.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
Other accompanying drawings are obtained with according to these accompanying drawings.
Fig. 1 is structured flowchart of the invention；
Fig. 2 is the top view of shielded box of the present invention.
Specific 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 carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Connect referring to the communication products automatic checkout system that Fig. 1 and Fig. 2, the present invention are provided, including shielded box 7 and shielded box 7
Connect in the wave filter 19 and counter 22 of setting, the shielded box 7 and be provided with noisemeter 72, earphone 73, antenna 78, power probe
76, the shielded box 7 is connected with determinand device, and the noisemeter 72 and power probe 76 are connected with wave filter 19 respectively, institute
State wave filter 19 and be connected with power supply 13 and relay 16, the relay 16 is connected with Multifunctional digital universal meter 14 and audio point
Analyzer 15, the earphone 73 and the connect setting of noisemeter 72, the antenna 78 is connected with a frequency mixer 23, the mixed gauge 23 and
Counter 22 is connected, and the frequency mixer 23 is also connected with a radio frequency switch 18, the radio frequency switch 18 and audio analyzer
Signal generator 17 is connected between 15.Using the detecting system, can to communication finished product global function (including radio frequency, voice,
Power consumption stream etc.) detected, detected by the way that determinand is put into shielded box, outside mixed and disorderly electromagnetic interference and not can be isolated
Clear signal.
Specifically, being carried out when audio is measured, it is necessary to pass through relay in the loudspeaker (not shown) or earphone 73 to determinand
16 are connected to audio analyzer 15, could be measured by computer automatic switching signal in different time.Loudspeaker or earphone 73
Also need to be carried out by noisemeter (72) measurement of sound size in addition to carrying out audio and measuring, noisemeter (72) measurement output
Output valve is magnitude of voltage after unit is decibel, and general noisemeter (72) is changed.The LED characteristics of luminescences of determinand are detected simultaneously
When, relevant voltage can be produced by the different aberration of photoelectric sensor LED and brightness, therefore in the loudspeaker of detection determinand
Or the sound size of earphone 73 and LED it is luminous be required for being switched to Multifunctional digital universal meter 14 by relay 16 measure,
Earphone 73 is connected to audio analyzer 15 and can eliminate the dry of noise by noisemeter 72 by the connection relay 16 of wave filter 19
Disturb.Power probe 76 by wave filter 19 connect power supply 13, test determinand electric current when, wave filter 19 by electric current be input into or
Output obtains pure direct current by filtering, therefore the electric current of detection determinand obtains more accurate result.In addition, passing
The property led electromagnetic interference is transmitted via power lead, continuously the electromagnetism produced by the electric device in same power system
Interference can each other be disturbed via power line, in order to be able to make effective suppression to Contacted EMI, therefore in electrical equipment
Wave filter 19 is installed additional and power supply between to be suppressed.Clutter can be avoided to interrogate attenuation, and differential mode filter from wave filter 19
The noise attenuation of required offer.When the radiofrequency characteristicses of determinand are detected, it is necessary to detect that the communication of determinand is received and launched
Characteristic, because transmission signal is radiofrequency signal, therefore using radio frequency switch 18.In needing to measure during due to detection radiofrequency characteristicses
Frequency error, it is therefore desirable to which antenna 78, signal generator 17 are connected by frequency mixer 23 with counter 22, could be via frequency mixer
23 obtain local frequency error, then are measured by counter 22, and antenna 78 will be connected to signal generator 17, then need to pass through
Frequency mixer 23 is switched over by radio frequency switch 18 again.
Used as a kind of specific embodiment of the invention, the shielded box 7 is metal shielded box, and the material of shielded box 7 is used
Zinc-plated copper coin, copper mesh or MULTILAYER COMPOSITE golden plate, can make electromagnetic wave produce reflection and can not penetrate using metal shielded box.Because being
Unite the strong signal of communication of external communication frequency interferences such as external emission, the interference of pirate radio, communication network covering area overlapping,
Side frequency is disturbed.Therefore on the one hand it is that the foreign electron motor interference outside shielded box 7 is shielded using metal shielded box
Cover, be on the other hand such as without traditional thread binding to the inside of shielded box 7 so as to ensure that electromagnetism noise environment meets test request in shielded box 7
The emission source such as put to be shielded without interfering to external world, make measuring environment in shielded box 7 as simple clean as possible.Using gold
The maskable frequency range of category shielded box from 10KHZ to 18GHZ, can meet the scope of volume shielding at 80 to 120 points
Shellfish.The shielded box 7 is also associated with a stepper motor 11, and the stepper motor 11 is connected with a stepper motor driver 12；It is described
Be additionally provided with reset key 75 and volume knob 74 in shielded box 7, the reset key 75 and volume knob 74 respectively with stepper motor 11
Connection, controls stepper motor 11 to reach the mesh of more accurate adjustment volume knob 74 and reset key 75 by stepper motor driver 12
, stepper motor 11 can produce a large amount of power supply disturbances when operating, in order to reduce power supply disturbance produced during motor running, therefore will
The time point for reading measuring value postpones about 0.5 second, and measuring value is obtained again after measuring numerical value bounce and terminating.And in design adjustment sound
During amount 74 sleeve of knob, it is coincide with the switch of volume knob 74 as far as possible, reduces slip condition and occur.
Further, be additionally provided with tablet 77 and small-signal control panel 71 in the shielded box 7, the tablet 77 with penetrate
Frequency switch 18 is connected, and the earphone 73 connects noisemeter 72, the engaging lug of small-signal control panel 71 by small-signal control panel 71
Machine 73 can test the signals such as a local oscillator, two local oscillators, the intermediate frequency of determinand, and tablet 77, radio frequency switch are set in shielded box 7
18 can receive the radiofrequency signal in the inside of shielded box 7 with real-time detection.The inwall of the shielded box 7 is covered with acoustical cotton 6, the suction
The thickness of sound cotton 6 is 5-15cm, and the preferred thickness of acoustical cotton 6 is 10cm, and pasting acoustical cotton 6 in shielded box 7 can reduce sound
The generation of sound back wave, it is ensured that test result is more accurate.
In the present invention, when the inside of shielded box 7 produces Intermodulation Interference to be disturbed with harmonic wave, no matter due to this two noise sources
It is intermodulation in its own signal intermodulation and the intermodulation of another transmitter signal or antenna or connector etc., or it is high-power nearby
Fundamental frequency harmonics of strong signal etc., are in inside shielded box 7 in high-power signal harmonic wave, signal produced by source, when shielded box 7 is sent out
During raw resonance, the shielding benefit of shielded box 7 can decline to a great extent, and can cause the error of test.The such as grade of antenna 78 emission source
Multipath reflection will be produced on the wall of shielded box 7, so as to influence test result, often error arrives greatly 30-40 decibels.In volume
Tested in larger shielded box 7, while making determinand on the premise of ensureing incidence for plane wave, shorten determinand and connect
The distance of antenna 78 is received, therefore sticking on acoustical cotton 6 has the absorbing material can to reduce back wave.
Further, the determinand device includes sliding test platform, cylinder 9 and thimble 10, and described slip tests flat
Platform includes the test bench 2 being fixedly connected with front shroud 1 of front shroud 1 and the sliding bar 4 being fixedly connected with test bench 2, the slip
Bar 4 and the connect setting of cylinder 9, the front shroud 1 and the connect setting of thimble 10, the thimble 10 be arranged in parallel with sliding bar 4, institute
State cylinder 9 to be connected with a PLC 8 respectively with thimble 10, the PLC 8 is also connected with earphone 73；Cylinder 9 and cunning
The connect setting of lever 4 can be adjusted slides test platform turnover shielded box 7, and thimble 10 and the front shroud 1 for sliding test platform
Connect setting, can more accurately adjust the position of starting in the movable rail for sliding test platform, and cylinder 9 is distinguished with thimble 10
Being connected with a PLC 8 can more accurately adjust slip test platform, allow determinand to accurately achieve the position of default test
Put, so as to reduce slide the error that test platform motion is produced.Additionally, PLC 8 can control earphone 73 to plug, pass through
PLC 8 can control earphone 73 and is any limitation as on the track of plug, it is to avoid side-play amount is excessive to cause the plug of earphone 73 to grind
Consumption.
Furthermore, the counter 22 is frequency counter, and the counter 22 is connected with a gps clock frequency 21, the GPS
Clock frequency 21 is connected with a gps antenna 20, is capable of achieving high-precision frequency and time signal output.Also include PC 24, sweep
Retouch instrument 26 and printer 25, the PC 24 and power supply 13, Multifunctional digital universal meter 14, audio analyzer 15, counter 22,
Stepper motor driver 12, scanner 26 and printer 25 are connected, and scanner 26 is directed to determinand and generation is scanned before carrying out
A document.Multifunctional digital universal meter 14, audio analyzer 15, counter 22, stepper motor driver 12 will be tested and tied
Fruit is saved into PC 24, can print result by printer 25.
In the present invention, the antenna 78 is using superfrequency (UHF：Ultra High Frequency) frequency range 1/4 ripple
Long, length is made for the copper rod of 15-18cm, antenna 78 is fixed on the position parallel with determinand, between the two from ginseng
According to antenna in standard laboratory 78 and determinand spacing, and its transmitting impedance is made as far as possible plus 50 impedances in one end of antenna 78
Approach 50 Europe.And signal source, receiver and frequency mixer 23 are verified after system has set up, could start after completing verification
Carry out system detectio program.Control line and holding wire between each part are using isolation cable, it is to avoid or lower radiativity EMI
Interference, and strengthen shielded box 7 ground connection treatment.
In sum, using metal shielded box, outside mixed and disorderly electromagnetic interference and unknown signal can be isolated, and combine transmission line
With the designing impedance matching such as antenna and internal preventing electromagnetic interference strategy, Radio frequency interference, radiation significantly can be effectively sent
Property electromagnetic interference and Contacted EMI, and obtain with code test room identical measurement result, while using automatic control
Mechanism processed carries out audio measurement, can improve the accuracy and repeatability of test result.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (6)
1. the wave filter (19) of a kind of communication product Auto-Test System, including shielded box (7) and shielded box (7) connect setting
With counter (22), it is characterised in that：Noisemeter (72), earphone (73), antenna (78), power supply are provided with the shielded box (7)
Probe (76), the shielded box (7) is connected with determinand device, the noisemeter (72) and power probe (76) respectively with filtering
Device (19) is connected, and the wave filter (19) is connected with power supply (13) and relay (16), and the relay (16) is connected with
Multifunctional digital universal meter (14) and audio analyzer (15), the earphone (73) and noisemeter (72) connect setting, the day
Line (78) is connected with a frequency mixer (23), and the frequency mixer (23) is connected with counter (22), and the frequency mixer (23) is also with one
Radio frequency switch (18) is connected, and signal generator is connected between the radio frequency switch (18) and audio analyzer (15)
(17)；The shielded box (7) is metal shielded box, and the material of shielded box (7) is using zinc-plated copper coin, copper mesh or MULTILAYER COMPOSITE gold
Plate, the shielded box (7) is also associated with a stepper motor (11), and the stepper motor (11) is connected with a stepper motor driver
(12)；Shielded box (7) inwall is covered with acoustical cotton (6), and acoustical cotton (6) thickness is 5-15cm；The determinand dress
Put including sliding test platform, cylinder (9) and thimble (10), the slip test platform includes front shroud (1) and front shroud
(1) test bench (2) being fixedly connected and the sliding bar (4) being fixedly connected with test bench (2), the sliding bar (4) and cylinder (9)
Connect setting, the front shroud (1) and thimble (10) connect setting, the thimble (10) be arranged in parallel with sliding bar (4), described
Cylinder (9) is connected with a PLC (8) respectively with thimble (10), and the PLC (8) is also connected with earphone (73).
2. communication product Auto-Test System according to claim 1, it is characterised in that：Also set in the shielded box (7)
There are reset key (75) and volume knob (74), the reset key (75) and volume knob (74) connect with stepper motor (11) respectively
Connect.
3. communication product Auto-Test System according to claim 2, it is characterised in that：Also set in the shielded box (7)
There are tablet (77) and small-signal control panel (71), the tablet (77) is connected with radio frequency switch (18), the earphone
(73) noisemeter (72) is connected by small-signal control panel (71).
4. communication product Auto-Test System according to claim 3, it is characterised in that：The counter (22) is frequency
Counter, the counter (22) is connected with a gps clock frequency (21), the gps clock frequency (21) and a gps antenna (20)
Connection.
5. communication product Auto-Test System according to claim 4, it is characterised in that：Also include PC (24), scanning
Instrument (26) and printer (25), the PC (24) and power supply (13), Multifunctional digital universal meter (14), audio analyzer
(15), counter (22), stepper motor driver (12), scanner (26) and printer (25) connection.
6. communication product Auto-Test System according to claim 5, it is characterised in that：The antenna (78) uses UHF
1/4 wavelength of frequency range, length is made for the copper rod of 15-18cm.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104154948A CN104154948A (en) | 2014-11-19 |
| CN104154948B true CN104154948B (en) | 2017-05-31 |
Family
ID=51880513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310178441.6A Active CN104154948B (en) | 2013-05-14 | 2013-05-14 | Communication product Auto-Test System |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104154948B (en) |
Families Citing this family (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 |
| CN108107279B (en) * | 2017-12-20 | 2020-10-23 | 宁波三星医疗电气股份有限公司 | Incoming material detection method for customized 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102026217A (en) * | 2009-09-11 | 2011-04-20 | 精英电脑股份有限公司 | System and method for verifying radio communication apparatus |
| 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 |
-
2013
- 2013-05-14 CN CN201310178441.6A patent/CN104154948B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| 手机通讯原理与测试;武鹏;《中国优秀硕士学位论文全文数据库 信息科技辑》;20110315(第03期);第24-30页，图3-3至3-10 * |
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| CN104154948A (en) | 2014-11-19 |
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