CN101267230B - Testing method for Bluetooth RF correction - Google Patents
Testing method for Bluetooth RF correction Download PDFInfo
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- CN101267230B CN101267230B CN2007100644954A CN200710064495A CN101267230B CN 101267230 B CN101267230 B CN 101267230B CN 2007100644954 A CN2007100644954 A CN 2007100644954A CN 200710064495 A CN200710064495 A CN 200710064495A CN 101267230 B CN101267230 B CN 101267230B
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Abstract
The present invention discloses a testing method of a bluetooth radio frequency adjustment, and in particular relates to a testing method of the radio frequency adjustment of the bluetooth in a mobile communication terminal. The invention comprises a frequency deviation modulating module and a frequency precision modulating module. The use of the invention is to provide a bluetooth radio frequency adjustment testing method which can effectively settle the problem existing in the prior art. The fund required for the bluetooth equipment when the invention is applied is reduced to 1/3 of normal fund. The manpower can be saved and the production efficiency can be increased.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to the method for testing of the RF calibration of bluetooth in a kind of mobile communication terminal.
Background technology
Mobile phone is as a kind of electronic product of being convenient to carry, and its function is day by day abundant.Its function not only has been confined to call function and SMS, and Bluetooth function has become the prerequisite function of most of mobile phones on the market.
The design of mobile phone has a variety of, and these schemes are based on the scheme that bottom-layer design company provides basically. and wherein Dragonfly (Scenario Name) platform of Philips (PHILIPS Co.) is one of the most powerful design of present GSM () cell-phone function. and the Bluetooth chip that uses in the Dragonfly platform is the BGB20x family chip.The basket tooth chip model that pushes away the use of Dragonfly platform initial stage at Philips is BGB203, owing to can not solidify basket tooth program in the BGB203 chip, must when producing, basket tooth program be downloaded in the BGB203 chip, this has caused very big trouble to production. and Philips company has released the BGB204 chip afterwards, solidified bluetooth procedures in the chip, but the consistency of the frequency accuracy of BGB204 chip and two radio-frequency (RF) index of frequency modulation is poor, must when mobile phone is produced, calibrate, otherwise the bluetooth communication function can be very poor to these two radio frequency parameters.
For the problem of the consistency difference that solves BGB204 Bluetooth chip frequency accuracy and two radio-frequency (RF) index of frequency modulation, developed the bluetooth calibration procedure BlueRF (testing software title) of operable BGB204 aborning in the prior art.But the BlueRF testing software is in use, has so several problems:
The bluetooth of part mobile phone can't with comprehensive test instrument (CMU200 N4010A) connects.
2. the part mobile phone can't be finished calibration process.
Alignment time long, the average calibration time is 80 seconds, the longest alignment time may reach 120 seconds.
4. the test false failure rate is higher, and for example the First Pass Yield of Salop (project name) bluetooth of NEC (Business Name) test only has 75%.
Therefore, bluetooth calibration procedure BlueRF of the prior art can cause mobile phone to produce the problem of face now:
Problem 1.
Every day is produced 2000 mobile phones calculating in standard configuration by handset production line, if average every alignment time is 80 seconds. and a comprehensive test instrument can only be produced approximately in one day so:
(22*60*60*95%)/the 80=940 platform.
Annotate: here by work 22 hours every days Time Calculation. and remove for workman's operating time of 5%.
25% mobile phone needs once or repeatedly resurvey in addition in addition. and producing 2000 mobile phones like this every day needs 3 bluetooth comprehensive test instruments at least.
The value of needed programmable power supply:
12,000*3=36,000 yuan.
If A. use CMU200 (comprehensive test instrument a kind of, it not only can measure the mobile phone radio frequency parameter that the basket tooth can also be measured other agreements) to make the bluetooth comprehensive test instrument:
The value of bluetooth comprehensive test instrument is probably 200,000*3=600,000 yuan.
Take the value 500 of CMU200 configurations, 000*3=1,500,000 yuans.
Take apparatus value altogether: 600,000+1,500,000+36,000=2,136,000 yuans
If B. use special-purpose N4010A to make the bluetooth comprehensive test instrument:
The value of bluetooth comprehensive test instrument is probably 200,000*3=600,000 yuan.
The value of needed programmable power supply: 12,000*3=36,000 yuan.
For taking apparatus value: 600,000+36,000=636000 yuan
Though N4010A lacks than the fund that CMU200 takies, because N4010A is a bluetooth specific equipment, can not be used for the test of other products, and the bluetooth power of test is poorer than CMU200, so that the employing of most of factory is CMU200.
Problem 2:
The bluetooth of part mobile phone can't be connected with comprehensive tester, cause part of cell phone to calibrate by manual methods, but manual calibration is difficult to accomplish to the workman of factory, have only the engineer of exploitation just can finish. that is to say that under the environment of plant, this part mobile phone may be finished calibration operation.
Problem 3:
The part mobile phone is not because the hardware of bluetooth own has problem, but can't calibrate, make the engineer of maintenance can't diagnose to this part mobile phone. common way, mobile phone development company has to send the engineer to factory this part mobile phone to be carried out manual calibration. for the mobile phone of volume production, this method is because cost is very high, impossible beyond doubt.
Summary of the invention
At the problems referred to above, the technical problem that the present invention solves is, a kind of method of testing of Bluetooth RF correction is provided, and the RF calibration of BGB204 is improved.
The method of testing of Bluetooth RF correction provided by the invention comprises frequency modulation module and modulating frequency precision module.
Wherein the frequency modulation module comprises following step:
After mobile phone enters test pattern, judge whether the mobile phone that existing frequency modulation passes through;
If the DAC value that no, reads bluetooth frequency modulation in the mobile phone is as the initial value of adjusting;
If have, with the DAC value by frequency modulation that counts on as the initial value of adjustment;
Mobile phone enters the bluetooth test pattern;
The bluetooth of mobile phone is connected with the comprehensive test instrument bluetooth;
Comprehensive test instrument is set;
With the frequency modulation in the testing software adjustment mobile phone, judge whether frequency modulation is qualified;
If qualified, carry out statistical computation with the DAC value storage of qualified frequency modulation and with former all qualified DAC values, obtain the initial DAC value of frequency modulation next time;
If defective, the disconnection Bluetooth of mobile phone is connected with comprehensive test instrument, gets back to mobile phone and enters bluetooth test pattern step.
Its modulating frequency precision module comprises following step:
Judge whether the mobile phone that existing frequency accuracy passes through
If have, the DAC value by frequency accuracy test that statistics is obtained is as the initial value of adjustment;
If the DAC value that no, reads bluetooth frequency accuracy in the mobile phone is as the initial value of adjusting;
Adjust frequency accuracy in the mobile phone up to qualified with testing software;
Carry out statistical computation with the DAC value storage of qualified frequency accuracy and with former all qualified DAC values, obtain the initial DAC value of frequency next time
The invention provides and a kind ofly can effectively solve in-problem Bluetooth RF correction method of testing in the prior art, can make and implement 1/3 before needed basket tooth equipment funds are reduced to behind the present invention, and can save manpower, improve production work efficient.
Description of drawings
Fig. 1 is the flow chart of Bluetooth RF correction in the prior art;
Fig. 2 is the flow chart of Bluetooth RF correction of the present invention;
Fig. 3 is the concrete implementing procedure figure of Bluetooth RF correction of the present invention
Embodiment
Please, be the method for testing of Bluetooth RF correction in the prior art, comprise following steps in the prior art referring to Fig. 1:
At first mobile phone power-on 110, enter mobile phone test pattern 120;
Read in the mobile phone bluetooth frequency accuracy and frequency modulation as the initial value of adjusting 130
Mobile phone enters bluetooth test pattern 140;
The bluetooth of mobile phone is connected 150 with the comprehensive test instrument bluetooth;
Adjust frequency accuracy in the mobile phone up to qualified 170 with testing software;
With the frequency modulation 180 in the testing software adjustment mobile phone;
Judge that whether qualified frequency modulation 190, qualified then calibration finishes 192;
Otherwise the disconnection Bluetooth of mobile phone is connected 191 with comprehensive test instrument; Turn back to mobile phone and enter bluetooth test pattern 140 steps.
Analysis chart 1 is the frequency accuracy of adjusting bluetooth earlier in the prior art as can be seen, and then whole frequency modulation; So just there is a problem, before to the frequency modulation calibration, if (back claims DAC value to the initial value of the frequency accuracy in the mobile phone, Digital analog Converter value, it is the numerical value that is used for controlling the various performance index of mobile phone in the mobile phone storage inside, in computer (mobile phone in fact also is a kind of of computer), all numerals all exist with binary mode, computer-internal has only digital quantity, so form the analog quantity of the various performances of mobile phone after not having analog quantity .DAC value by the array analog-converted. frequency accuracy is still adjusted frequency deviation and is all stored in mobile phone inside with the DAC form) and qualified value between deviation ratio bigger, adjust frequency modulation in any case, the bluetooth of mobile phone all can't be connected with comprehensive test instrument, if perhaps connect very unstable. but the value of frequency modulation is normal conversely, the precision of adjusting frequency in any case, the connection of bluetooth all is stable.
Adjusted value (back the be called DAC value) scope of frequency modulation in mobile phone is 0～255, if but it is normal to be not that value in this scope can both make bluetooth connect. in a single day bluetooth can't connect, the bluetooth of mobile phone also just can't be carried out communication with comprehensive test instrument again, frequency modulation also just can't continue, and finally can cause calibration to finish.
In the prior art, the consistency of BGB204 or mobile phone interlock circuit is bad, the calibration value that Philips gave and the calibration equation of frequency modulation can not be suitable fully, that is to say, between calibration value that part of cell phone will be calibrated (back claims the DAC value) and the frequency modulation not rule can follow. according to the formula that Philips gives, the DAC value is fallen in the scope that bluetooth can't connect.
Because the project difference of mobile phone and batch difference of mobile phone, the preliminary examination value of frequency modulation can be different in the mobile phone, and if if the initial DAC value of frequency modulation is too big from the normal value deviation, then mobile phone can't be connected with comprehensive test instrument at the very start.
In order to solve defective of the prior art, the present invention proposes following solution. before the calibration frequency precision, calibrate frequency modulation earlier, like this in the calibration frequency modulation, it is unstable that bluetooth in the time of can not causing frequency modulation because problem is arranged frequency accuracy DAC value can't connect or connect. and calibration steps adopts thick bar and two kinds of methods of fine tuning simultaneously. and the formula according to Philips during coarse adjustment calculates that (this formula might be different in the different platform mobile phone, but formula itself is unimportant, its is algorithm just) the DAC value adjusted. when frequency accuracy and frequency modulation little to a certain degree the time employing fine tuning method, the step-length of adjusting is progressively dwindled, and so just the DAC value is fallen and be made bluetooth can't connect or connect on the unsettled scope; The DAC of simultaneously that each frequency accuracy and frequency modulation is qualified mobile phone writes down. and has for example calibrated the front, 100 mobile phones, wherein 95 qualified, the adjusted DAC value of these qualified mobile phones write down averages. this average DAC value for current project and batch the bluetooth of mobile phone should be that comparison is near normal value, then when next mobile phone is calibrated, earlier this value being write mobile phone, and then calibrate. this average DAC value can make being connected on the comprehensive test instrument that bluetooth can be stable.
The method of testing of the bluetooth calibration after the improvement when testing, is at first carried out frequency modulation as shown in Figure 2, promptly calibrates frequency modulation and then calibration frequency precision 220 earlier.Concrete step as shown in Figure 3, mobile phone power-on 301 enters test pattern 302
After mobile phone enters test pattern, judge whether the mobile phone 303 that existing frequency modulation passes through;
If the DAC value that no, reads bluetooth frequency modulation in the mobile phone is as the initial value of adjusting 305;
If have, with the DAC value by frequency modulation that counts on as the initial value 304 of adjustment;
Mobile phone enters bluetooth test pattern 306;
The bluetooth of mobile phone is connected 307 with the comprehensive test instrument bluetooth;
Adjust frequency modulation 309 in the mobile phone with testing software, judge frequency modulation whether qualified 311;
If qualified, carry out statistical computation with the DAC value storage of qualified frequency modulation and with former all qualified DAC values, obtain the initial DAC value 312 of frequency modulation next time;
If defective, the disconnection Bluetooth of mobile phone is connected 310 with comprehensive test instrument, gets back to mobile phone and enters bluetooth test pattern 306 steps.
So far, frequency modulation just is through with, first rule of thumb value is calibrated when frequency modulation, value with qualified frequency modulation joins in the statistics simultaneously, like this along with the increase of test passes mobile phone, the value that comes out can effectively be enhanced productivity just more and more near the mean value of this batch mobile phone, reduces cost simultaneously.
After frequency modulation finished, what next carry out was exactly modulation accuracy, comprises following step:
Judge whether the mobile phone 313 that existing frequency accuracy passes through;
If have, the DAC value by frequency accuracy test that statistics is obtained is as the initial value 315 of adjustment;
If the DAC value that no, reads bluetooth frequency accuracy in the mobile phone is as the initial value of adjusting 314;
Adjust frequency accuracy in the mobile phone up to qualified 316 with testing software;
Carry out statistical computation with the DAC value storage of qualified frequency accuracy and with former all qualified DAC values, obtain the initial DAC value 317 of frequency next time
So far, the precision of adjusting frequency just is through with, first rule of thumb value is calibrated when adjusting the system frequency accuracy, simultaneously qualified frequency accuracy value is joined in the statistics, like this along with the increase of test passes mobile phone, the value that comes out can effectively be enhanced productivity just more and more near the mean value of this batch mobile phone, reduces cost simultaneously.
So far, along with the calibration of frequency modulation and bluetooth frequencies precision is finished, the calibration of bluetooth test has just finished 318.
The beneficial effect that the present invention can also obtain is after adopting method of the present invention, the testing time be reduced to every 32 seconds. produce 2000 mobile phones like this every day, the comprehensive test instrument quantity of needs is
2000/ ((22*60*60*0.95)/32)=0.85
Before needed basket tooth equipment funds will be reduced to 1/3, and can save manpower. because the Dragonfly platform is the big platform of GSM, a lot of mobile phones research and development companies and mobile phone manufacturing company have all adopted this platform scheme, not down tens sections of the bluetooth projects of the band BGB204 chip of the annual Dragonfly of use platform development. and give like this with mobile phone manufacturing company and saved a large amount of testing equipments that is used for the bluetooth calibration and the fund input on the manpower. also solved the difficulty of maintenance and mobile phone failure diagnosis simultaneously. reduced the difficulty of mobile phone production.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (1)
1. the method for testing of a Bluetooth RF correction is characterized in that,
It comprises frequency modulation module and modulating frequency precision module, and described frequency modulation module comprises following step:
After mobile phone enters test pattern, judge whether the mobile phone that existing frequency modulation passes through;
If the DAC value that no, reads bluetooth frequency modulation in the mobile phone is as the initial value of adjusting;
If have, with the DAC value by frequency modulation that counts on as the initial value of adjustment;
Mobile phone enters the bluetooth test pattern;
The bluetooth of mobile phone is connected with the comprehensive test instrument bluetooth;
Comprehensive test instrument is set;
With the frequency modulation in the testing software adjustment mobile phone, judge whether frequency modulation is qualified;
If qualified, carry out statistical computation with the DAC value storage of qualified frequency modulation and with former all qualified DAC values, obtain the initial DAC value of frequency modulation next time;
If defective, the disconnection Bluetooth of mobile phone is connected with comprehensive test instrument, gets back to mobile phone and enters bluetooth test pattern step;
Described modulating frequency precision module comprises following step:
Judge whether the mobile phone that existing frequency accuracy passes through,
If have, the DAC value by frequency accuracy test that statistics is obtained is as the initial value of adjustment;
If the DAC value that no, reads bluetooth frequency accuracy in the mobile phone is as the initial value of adjusting;
Adjust frequency accuracy in the mobile phone up to qualified with testing software;
Carry out statistical computation with the DAC value storage of qualified frequency accuracy and with former all qualified DAC values, obtain the initial DAC value of frequency next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100644954A CN101267230B (en) | 2007-03-16 | 2007-03-16 | Testing method for Bluetooth RF correction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100644954A CN101267230B (en) | 2007-03-16 | 2007-03-16 | Testing method for Bluetooth RF correction |
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| CN101267230A CN101267230A (en) | 2008-09-17 |
| CN101267230B true CN101267230B (en) | 2011-08-10 |
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| CN2007100644954A Expired - Fee Related CN101267230B (en) | 2007-03-16 | 2007-03-16 | Testing method for Bluetooth RF correction |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101651502B (en) * | 2009-09-23 | 2013-01-30 | 华为终端有限公司 | Calibration test method, device and system |
| CN102104434A (en) * | 2009-12-21 | 2011-06-22 | 龙旗科技(上海)有限公司 | Method for testing Bluetooth emission performance of mobile phone by using channel management unit (CMU) spectrum analysis module |
| CN104579512B (en) * | 2015-01-23 | 2017-09-19 | 深圳市冠旭电子股份有限公司 | A kind of bluetooth frequency deviation adjusting method and device |
| CN105657739B (en) * | 2016-01-29 | 2019-03-22 | 深圳市极致汇仪科技有限公司 | A kind of wireless comprehensive test instrument Bluetooth signal frame synchronization detection method |
| CN108155955B (en) * | 2017-11-17 | 2021-05-25 | 芯海科技（深圳）股份有限公司 | Bluetooth frequency offset test calibration device and method |
| CN108390732A (en) | 2018-01-04 | 2018-08-10 | 晶晨半导体(上海)股份有限公司 | A method of crystal polarization is calibrated by radiofrequency signal |
| CN112202507B (en) * | 2020-11-19 | 2022-07-29 | 深圳市友华通信技术有限公司 | WIFI production measurement and calibration method and computer-readable storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1446014A (en) * | 2002-03-14 | 2003-10-01 | 深圳市中兴通讯股份有限公司上海第二研究所 | Realizing Method for automatic frequency tracking of mobile terminal system |
| CN1719815A (en) * | 2004-07-07 | 2006-01-11 | 华为技术有限公司 | Method for estimating and correcting frequency shift and apparatus thereof |
| CN1859675A (en) * | 2006-01-04 | 2006-11-08 | 华为技术有限公司 | Frequency correcting method and device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1446014A (en) * | 2002-03-14 | 2003-10-01 | 深圳市中兴通讯股份有限公司上海第二研究所 | Realizing Method for automatic frequency tracking of mobile terminal system |
| CN1719815A (en) * | 2004-07-07 | 2006-01-11 | 华为技术有限公司 | Method for estimating and correcting frequency shift and apparatus thereof |
| CN1859675A (en) * | 2006-01-04 | 2006-11-08 | 华为技术有限公司 | Frequency correcting method and device |
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