CN105323347A - Test method of Bluetooth radio frequency calibration in mobile communication terminal - Google Patents
Test method of Bluetooth radio frequency calibration in mobile communication terminal Download PDFInfo
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- CN105323347A CN105323347A CN201410370488.7A CN201410370488A CN105323347A CN 105323347 A CN105323347 A CN 105323347A CN 201410370488 A CN201410370488 A CN 201410370488A CN 105323347 A CN105323347 A CN 105323347A
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Abstract
The invention discloses a test method of Bluetooth radio frequency calibration in a mobile communication terminal. The test method is characterized in that a frequency deviation modulation module and a frequency accuracy modulation module are comprised. According to the invention, the fund of needed Bluetooth equipment falls to 1/3 of the previous fund; manpower can be saved; and the production efficiency is improved.
Description
Technical field
The present invention relates 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 being convenient to carry with, and its function is day by day enriched.Its function is not only confined to call function and SMS, and Bluetooth function has become the prerequisite function of most of mobile phone on market.
The design of mobile phone has a variety of, these schemes are the scheme provided based on bottom-layer design company substantially. wherein Philips (PHILIPS Co.) Dragonfly (Scenario Name) platform is one of the most powerful design of current GSMO cell-phone function, and the Bluetooth chip used in Dragonfly platform is BGB20x family chip.The basket tooth chip model pushing away the use of Dragonfly platform initial stage at Philips is BGB203, due to basket tooth program can not be solidified in BGB203 chip, must produce time by basket tooth download program in BGB203 chip, this causes very large trouble to production, Philips company is proposed BGB204 chip afterwards, bluetooth procedures is have cured in chip, but the consistency of the frequency accuracy of BGB204 chip and frequency modulation two radio-frequency (RF) index is poor, must calibrate these two radio frequency parameters when mobile phone is produced, otherwise blue tooth communication function can be very poor.
In order to solve the problem of the consistency difference of BGB204 Bluetooth chip frequency accuracy and frequency modulation two radio-frequency (RF) index in prior art, develop the bluetooth calibration procedure BlueRF (testing software title) of operable BGB204 aborning.But BlueRF testing software is in use, there is such Railway Project:
1, the bluetooth of part mobile phone cannot connect with comprehensive test instrument (CMU200, N4010A).
2, part mobile phone cannot complete calibration process.
3, the alignment time is long, and the average calibration time is 80 seconds, and the longest alignment time may reach 120 seconds.
4, test false failure rate higher, the First Pass Yield of Salop (project name) the bluetooth test of such as NEC (Business Name) only has 75%.
Therefore, bluetooth calibration procedure of the prior art can cause mobile phone to produce the problem in now face:
Problem 1.
2000 mobile phones calculating are produced every day, if average every 80 seconds platform alignment times by the standard configuration of handset production line. so a comprehensive test instrument can only be produced approximately for one day:
(22*60*60*95%)/80=940 platform
Note: here by work 22 hours every days Time Calculation. and remove operative's time of 5%.
Also have the mobile phone of 25% to need once or repeatedly to resurvey in addition, producing 2000 mobile phones such every day at least needs 3 bluetooth comprehensive test instruments.
The value of required programmable power supply:
12,000*3=36,000 yuan.
If A. use CMU200 (one of comprehensive test instrument, it not only can measure the mobile phone radio frequency parameter that bluetooth can also measure other agreements) to make bluetooth comprehensive test instrument:
The value of bluetooth comprehensive test instrument probably at 200,000*3=600,000 yuan.
Take the value 500,000*3=1,500 of CMU200 configurations, 000 yuan. altogether take apparatus value: 600,000+1,500,000+36,000=2,136,000 yuan.
If B. use special N4010A to make bluetooth comprehensive test instrument:
The value of bluetooth comprehensive test instrument probably at 200,000*3=600,000 yuan
The value of required programmable power supply: 12,000*3=36,000 yuan.
For taking apparatus value: 600,000+36,000=636000 yuan
Although the fund that N4010A takies than CMU200 is few, because N4010A is bluetooth specific equipment, the test of other products can not be used for, and 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 cannot be connected with comprehensive tester, part of cell phone is caused manually method to calibrate, but manual calibration the workman to factory be difficult to accomplish, only have the engineer of exploitation just can complete, that is, under the environment of plant, this part mobile phone may complete calibration operation.
Problem 3:
Part mobile phone does not have problem due to the hardware of bluetooth own, but cannot calibrate, and the engineer keeped in repair cannot be diagnosed this part mobile phone.Common way, mobile phone development company has to send engineer to carry out manual calibration to factory to this part mobile phone.For the mobile phone of volume production, this method due to cost very high, impossible beyond doubt.
Summary of the invention
For solving above-mentioned existing shortcoming, main purpose of the present invention is to provide the method for testing of the RF calibration of bluetooth in a kind of mobile communication terminal of practicality, before required bluetooth equipment fund drops to 1/3, and can manpower be saved, improve production work efficiency.
For reaching above-described object, in a kind of mobile communication terminal of the present invention, the method for testing of the RF calibration of bluetooth takes following technical scheme:
In mobile communication terminal, a method of testing for the RF calibration of bluetooth, is characterized in that, comprises frequency modulation module and modulating frequency precision module.
In described a kind of mobile communication terminal, the method for testing of the RF calibration of bluetooth, is characterized in that, described frequency modulation module comprises step below:
A: after mobile phone enters test pattern, judges whether the mobile phone that existing frequency modulation passes through;
B: if do not had, reads the initial value of DCA value as adjustment of Bluetooth modulation frequency deviation in mobile phone;
C: if had, using count on by the DCA value of the frequency modulation initial value as adjustment;
D: mobile phone enters bluetooth test pattern;
E: the bluetooth of mobile phone is connected with comprehensive test instrument bluetooth;
F: comprehensive test instrument is set;
G: with the frequency modulation in testing software adjustment mobile phone, judge that whether frequency modulation is qualified;
H: if qualified, stores the DAC value of qualified frequency modulation and carried out statistical computation with former all qualified DAC values, obtaining the initial DAC value of frequency modulation next time;
I: if defective, disconnects the connection of Bluetooth of mobile phone and comprehensive test instrument, gets back to mobile phone and enter bluetooth test pattern step.
In described a kind of mobile communication terminal, the method for testing of the RF calibration of bluetooth, is characterized in that, described modulating frequency precision module comprises step below:
A: judge whether the mobile phone that existing frequency accuracy passes through;
B: if had, the DAC value of having been tested by frequency accuracy statistics obtained is as the initial value adjusted;
C: if do not had, reads the initial value of DAC value as adjustment of bluetooth frequencies precision in mobile phone;
D: with the frequency accuracy in testing software adjustment mobile phone until qualified;
E: the DAC value of qualified frequency accuracy stored and carried out statistical computation with former all qualified DAC values, obtaining the initial DAC value of frequency next time.
Adopt the present invention of as above technical scheme, there is following beneficial effect:
Before required bluetooth equipment fund can be made to drop to 1/3, and can manpower be saved, improve production work efficiency.
Accompanying drawing explanation
Fig. 1 is the flow chart of Bluetooth RF standard in 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 refer to Fig. 1, be the method for testing of Bluetooth RF correction in prior art, in prior art, comprise following steps:
First mobile phone power-on 110, enters mobile phone test pattern 120;
In reading mobile phone, bluetooth frequencies precision and frequency modulation are as the initial value 130 adjusted
Mobile phone enters bluetooth test pattern 140;
The bluetooth of mobile phone and comprehensive test instrument bluetooth are carried out connection 150;
Comprehensive test instrument 160 is set;
With the frequency accuracy in testing software adjustment mobile phone until qualified 170;
With the frequency modulation 180 in testing software adjustment mobile phone;
Judge frequency modulation whether qualified 190, qualified, calibrate 192;
Otherwise disconnect the connection 191 of Bluetooth of mobile phone and comprehensive test instrument; Turn back to mobile phone and enter bluetooth test pattern 140 step.
Analysis chart 1 can be found out, is the frequency accuracy first adjusting bluetooth in prior art, and then whole frequency modulation, so just there is a problem, before to modulation frequency offset correction, if the initial value of the frequency accuracy in mobile phone (claims DAC value below, DigitalanalogConverter value, it is the numerical value being used for controlling the various performance index of mobile phone stored at interior of mobile phone, in a computer (mobile phone is in fact also the one of computer), all numerals exist all in a binary fashion, computer-internal only has digital quantity, there is no analog quantity .DAC value by forming the analog quantity of the various performance of mobile phone after array analog-converted. thus frequency accuracy or adjusting frequency deviation all stores at interior of mobile phone with DAC form) and qualified value between deviation ratio larger, adjust frequency modulation in any case, the bluetooth of mobile phone all cannot be connected with comprehensive test instrument, if or connect very unstable. but the value of frequency modulation is normal conversely, to adjust frequency in any case precision, the connection of bluetooth is all stable.
The adjusted value of frequency modulation in mobile phone (being called DAC value below) scope is 0255, if but it is normal to be not that value within the scope of this can make bluetooth connect. bluetooth is once cannot connect, the bluetooth of mobile phone also just cannot carry out communication with comprehensive test instrument again, frequency modulation also just cannot continue, and calibration finally can be caused to complete.
In the prior art, the consistency of BGB204 or mobile phone interlock circuit is bad, the calibration equation of the calibration value that Philips gives and frequency modulation can not be completely applicable, that is, between the calibration value (claiming DAC value below) that part of cell phone will be calibrated and frequency modulation, rule can not followed, according to the formula that Philips gives, in probably make DAC value fall scope that bluetooth cannot connect.
Batch difference of the different and mobile phone of the project due to mobile phone, in mobile phone, the preliminary examination value of frequency modulation can different, if and if the initial DAC value of frequency modulation from normal value deviation too greatly, then mobile phone cannot be connected with comprehensive test instrument at the very start.
In order to solve defect of the prior art, the present invention proposes solution below.
First frequency modulation was calibrated before calibration frequency precision, like this when calibration frequency modulation, can not cause because frequency accuracy value has problem and cannot connect or connect instability to bluetooth during frequency modulation. the calibration steps thick bar of Bian and fine tuning two kinds of methods simultaneously. during coarse adjustment, according to the formulae discovery of Philips, (this formula is likely different in different platform mobile phone, but formula itself is unimportant, it is an algorithm just) the DAC value that adjusts. when frequency accuracy and frequency modulation little to a certain extent time employing fine tuning method, the step-length of adjustment progressively reduces, DAC value would not be made like this to fall and to make bluetooth cannot connect or connect in unstable scope, the DAC of each frequency accuracy and the qualified mobile phone of frequency modulation is write down simultaneously, such as calibrate above, 100 mobile phones, wherein 95 qualified, DAC value after the adjustment of these qualified mobile phones is write down and is averaged. this average DAC value for current project and batch mobile phone bluetooth should be relatively normal value, then when calibrating next mobile phone, first by this value write mobile phone, and then calibrate, this average DAC value can enable stable being connected on comprehensive test instrument of bluetooth.
The method of testing of the bluetooth calibration after improvement as shown in Figure 2, when testing, first being carried out frequency modulation, namely first being calibrated frequency modulation, and then calibration frequency precision 220.As shown in Figure 3, mobile phone power-on 301, enters test pattern 302. to concrete step
After mobile phone enters test pattern, judge whether the mobile phone 303 that existing frequency modulation passes through;
If no, read the initial value 305 of DAC value as adjustment of Bluetooth modulation frequency deviation in mobile phone;
If had, using count on by frequency modulation 0 eight (: value as adjustment initial value 304;
Mobile phone enters bluetooth test pattern 306;
The bluetooth of mobile phone and comprehensive test instrument bluetooth are carried out connection 307;
Comprehensive test instrument 308 is set;
With the frequency modulation 309 in testing software adjustment mobile phone, judge frequency modulation whether qualified 311;
If qualified, the DAC value of qualified frequency modulation stored and carried out statistical computation with former all qualified DAC values, obtaining the initial DAC value 312 of frequency modulation next time;
If defective, disconnect the connection 310 of Bluetooth of mobile phone and comprehensive test instrument, get back to mobile phone and enter bluetooth test pattern 306 step.
So far, frequency modulation just finishes, first calibrate based on experience value when frequency modulation, the value of qualified frequency modulation is joined in statistics simultaneously, like this along with the increase of test passes mobile phone, the value come out, just more and more close to the mean value of this batch of mobile phone, effectively can be enhanced productivity, reduce costs simultaneously.
After frequency modulation terminates, what next carry out is exactly modulation accuracy, comprises step below: judge whether the mobile phone 313 that existing frequency accuracy passes through;
If had, the 0DAC value of having been tested by frequency accuracy statistics obtained is as the initial value 315 adjusted;
If no, read the initial value 314 of DAC value as adjustment of bluetooth frequencies precision in mobile phone; With the frequency accuracy in testing software adjustment mobile phone until qualified 316;
The DAC value of qualified frequency accuracy stored and carried out statistical computation with former all qualified DAC values, obtaining the initial DAC value 317. of frequency next time
So far, precision of adjusting frequency just finishes, first calibrate based on experience value when adjusting frequency accuracy processed, qualified frequency accuracy value is joined in statistics simultaneously, like this along with the increase of test passes mobile phone, the value come out, just more and more close to the mean value of this batch of mobile phone, effectively can be enhanced productivity, reduce costs simultaneously.
So far, along with the calibration of frequency modulation and bluetooth frequencies precision completes, the calibration of bluetooth test just completes 318.
The beneficial effect that the present invention can also obtain is that after adopting method of the present invention, the testing time is reduced to every platform 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
Required basket tooth equipment funds will be reduced in the past 1/3, and can manpower be saved. because Dragonfly platform is the platform that of GSM is large, a lot of mobile phone research and development company and mobile phone manufacturing company all this platform schemes of Bian, the bluetooth project of the band BGB204 chip of annual use Dragonfly platform development not lower tens sections. like this to the fund input saved with mobile phone manufacturing company on a large amount of testing equipment of calibrating for bluetooth and manpower, also solve the difficulty of maintenance and fault of mobile phone diagnosis simultaneously, reduce the difficulty that mobile phone is produced.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles 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 (3)
1. the method for testing of the RF calibration of bluetooth in mobile communication terminal, is characterized in that, comprise frequency modulation module and modulating frequency precision module.
2. the method for testing of the RF calibration of bluetooth in a kind of mobile communication terminal according to claim 1, it is characterized in that, described frequency modulation module comprises step below:
A: after mobile phone enters test pattern, judges whether the mobile phone that existing frequency modulation passes through;
B: if do not had, reads the initial value of DCA value as adjustment of Bluetooth modulation frequency deviation in mobile phone;
C: if had, using count on by the DCA value of the frequency modulation initial value as adjustment;
D: mobile phone enters bluetooth test pattern;
E: the bluetooth of mobile phone is connected with comprehensive test instrument bluetooth;
F: comprehensive test instrument is set;
G: with the frequency modulation in testing software adjustment mobile phone, judge that whether frequency modulation is qualified;
H: if qualified, stores the DAC value of qualified frequency modulation and carried out statistical computation with former all qualified DAC values, obtaining the initial DAC value of frequency modulation next time;
I: if defective, disconnects the connection of Bluetooth of mobile phone and comprehensive test instrument, gets back to mobile phone and enter bluetooth test pattern step.
3. the method for testing of the RF calibration of bluetooth in a kind of mobile communication terminal according to claim 1, it is characterized in that, described modulating frequency precision module comprises step below:
A: judge whether the mobile phone that existing frequency accuracy passes through;
B: if had, the DAC value of having been tested by frequency accuracy statistics obtained is as the initial value adjusted;
C: if do not had, reads the initial value of DAC value as adjustment of bluetooth frequencies precision in mobile phone;
D: with the frequency accuracy in testing software adjustment mobile phone until qualified;
E: the DAC value of qualified frequency accuracy stored and carried out statistical computation with former all qualified DAC values, obtaining the initial DAC value of frequency next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410370488.7A CN105323347A (en) | 2014-07-30 | 2014-07-30 | Test method of Bluetooth radio frequency calibration in mobile communication terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410370488.7A CN105323347A (en) | 2014-07-30 | 2014-07-30 | Test method of Bluetooth radio frequency calibration in mobile communication terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106789405A (en) * | 2016-12-02 | 2017-05-31 | 深圳市极致汇仪科技有限公司 | The method for rapidly testing and system of a kind of Devices to test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106789405A (en) * | 2016-12-02 | 2017-05-31 | 深圳市极致汇仪科技有限公司 | The method for rapidly testing and system of a kind of Devices to test |
| CN106789405B (en) * | 2016-12-02 | 2020-09-15 | 深圳市极致汇仪科技有限公司 | Rapid test method and system for equipment to be tested |
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Application publication date: 20160210 |