CN103645400B - A kind of charger detection system and method for measuring charged thereof - Google Patents
A kind of charger detection system and method for measuring charged thereof Download PDFInfo
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Abstract
The invention discloses a kind of charger detection system and method for measuring charged thereof, described charger detection system comprises: mobile terminal and the charger for charging to mobile terminal, wherein, described charger comprises: charging output interface module, charging output module and filter module; Described mobile terminal comprises: charging input interface module, filter parameter detection module, filter parameter memory module and charge control module; In the time that described charging output interface module connects charging input interface module, filter parameter detection module detects the filter parameter of charger, and search the filter parameter that whether stores described filter module in filter parameter memory module, if had, charge control module is opened charge function; If no, charge control module charge closing function; Non-standard configuration charger can not be charged to mobile terminal, avoided using the non-standard configuration mobile terminal various charging safety problems that cause of charge, make to charge more safe and reliable.
Description
Technical field
The present invention relates to field of mobile terminals, in particular a kind of charger detection system and charging detection side thereofMethod.
Background technology
At present, along with world-class mobile terminal production firm of many families such as Samsung, the apple relevant thing of in succession chargingTherefore people are more and more higher for charging safety requirements, charger, as the most frequently used annex of mobile terminal, must be reliable and secure, but because standard configuration charger circuit simplicity of design and the charging inlet module of most of mobile terminal can be general, cause userIn routine use process, can use non-standard configuration charger to charge to mobile terminal. Due to non-standard configuration charger and standard configurationBetween charger, generally there is the difference on electric parameter, easily produce and charge extremely, occur damaging charger, mobile terminal etc.Situation. Therefore, there are the various charging safety problems that use non-standard charger to cause, brought inconvenience greatly to user.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provides a kind of charger to detectSystem and method for measuring charged thereof, be intended to solve existing mobile terminal and can charge and cause easily with non-standard configuration chargerProduce the problem of charging accident.
The technical scheme that technical solution problem of the present invention adopts is as follows:
A kind of charger detection system, comprises mobile terminal and the charger for charging to mobile terminal, wherein, described inCharger comprises:
For connecting the charging output interface module of mobile terminal;
For the charging output module of output voltage and electric current;
There is the filter module of filter parameter;
Described charging output module, filter module and charging output interface module are connected successively;
Described mobile terminal comprises:
For the charging input interface module of connecting charger;
For detection of the filter parameter detection module of the filter parameter of charger;
For the filter parameter memory module of memory filter parameter;
For opening or the charge control module of charge closing function;
Described charging input interface module, filter parameter detection module are connected successively with charge control module; Described filterRipple device parameter memory module connects filter parameter detection module; Described charging output interface module connects charging input interface mouldPiece;
In the time that described charging output interface module connects charging input interface module, filter parameter detection module detects and fillsThe filter parameter of electrical equipment, and search the wave filter ginseng that whether stores described filter module in filter parameter memory moduleNumber, if had, charge control module is opened charge function; If no, charge control module charge closing function.
Described charger detection system, wherein, described filter parameter comprises: filter type, upper cut-off frequencyAnd lower-cut-off frequency.
Described charger detection system, wherein, described mobile terminal also comprises: for detection of charging output interface moduleThe charger connection detection module whether being connected with charging input interface module; Described charger connection detection module connects chargingInput interface module.
Described charger detection system, wherein, described filter parameter detection module comprises:
Be used for the signal generating unit of the signal of exporting different frequency;
The detecting signal unit whether can filtered device module filtering for detection of the signal of different frequency;
Draw the wave filter ginseng of filter module for the filter result of the signal to different frequency according to filter moduleThe filter parameter analytic unit of number;
Described signal generating unit, detecting signal unit and filter parameter analytic unit are connected successively.
Described charger detection system, wherein, described detecting signal unit detects the amplitude of the feedback signal of charger,And the amplitude of feedback signal and a threshold value are contrasted, in the time that amplitude is less than threshold value, the corresponding frequency of signal generating unit outputThe filtered device module of signal of rate is filtered.
The method for measuring charged of described charger detection system, wherein, comprises the following steps:
A, in the time that charger is connected with mobile terminal, mobile terminal detects the filter parameter of charger;
B, search the filter parameter that whether stores described charger in mobile terminal, if had, open charging meritCan; If no, charge closing function.
Described method for measuring charged, wherein, described steps A specifically comprises:
A1, in the time that charger is connected with mobile terminal, mobile terminal is exported the signal of various frequencies to charger, and detectWhether the signal of various frequencies can be filtered by the filter module of charger inside;
A2, the filter result of filtering according to the filtered device module of the signal of various frequencies, draw the wave filter mould of chargerThe filter parameter of piece.
Described method for measuring charged, wherein, described steps A 1 specifically comprises:
A11, in the time that charger is connected with mobile terminal, mobile terminal is exported the signal of a certain frequency to charger, this letterNumber amplitude certain;
The signal of A12, acquisition for mobile terminal charger feedback, and detect the amplitude of this feedback signal, if feedback signalAmplitude is less than a threshold value, and the signal of this frequency is filtered by the filter module of charger.
Described method for measuring charged, wherein, in described steps A 12, described threshold value is that mobile terminal is exported a certain frequency0.7 times of the amplitude of the signal of rate.
Described method for measuring charged, wherein, described steps A 2 specifically comprises:
If the signal of the frequency from small to large of A21 mobile terminal output is filtered entirely, the filter module of chargerType be full resistance wave filter;
If the signal of the frequency from small to large of A22 mobile terminal output is not filtered entirely, the filtering of charger insideThe type of device module is all-pass filter;
If A23 frequency is not filtered while being less than first threshold, if be filtered when frequency is greater than first threshold, chargerThe type of filter module be low pass filter, and the cut-off frequency of this low pass filter is first threshold;
If A24 frequency is filtered while being less than first threshold, if be not filtered when frequency is greater than first threshold, chargerThe type of filter module be high-pass filter, and the cut-off frequency of this high-pass filter is first threshold;
If A25 frequency is filtered while being less than first threshold, if be also filtered when frequency is greater than Second Threshold, when frequency largeBe not filtered in first threshold and while being less than Second Threshold, the type of the filter module of charger is bandpass filter, andThe lower-cut-off frequency of this bandpass filter is first threshold, and upper cut-off frequency is Second Threshold;
If A26 frequency is not filtered while being less than first threshold, if be not filtered when frequency is greater than Second Threshold, when frequently yetRate is filtered when being greater than first threshold and being less than Second Threshold, and the type of the filter module of charger is bandstop filter,And the lower-cut-off frequency of this bandstop filter is first threshold, upper cut-off frequency is Second Threshold;
Wherein, described Second Threshold is greater than first threshold.
A kind of charger detection system provided by the present invention and method for measuring charged thereof, solved existing moving effectivelyMoving terminal can be charged and cause easily producing the problem of charging accident with non-standard configuration charger, described charger detection systemComprise: mobile terminal and the charger for charging to mobile terminal, wherein, described charger comprises: charging output interface mouldPiece, charging output module and filter module; Described charging output module, filter module and charging output interface module are successivelyConnect; Described mobile terminal comprises: charging input interface module, filter parameter detection module, filter parameter memory moduleAnd charge control module; Described charging input interface module, filter parameter detection module are connected successively with charge control module;Described filter parameter memory module connects filter parameter detection module; Described charging output interface module connects charging inputInterface module; In the time that described charging output interface module connects charging input interface module, filter parameter detection module detectsThe filter parameter of charger, and search the wave filter that whether stores described filter module in filter parameter memory moduleParameter, if had, charge control module is opened charge function; If no, charge control module charge closing function; MakeMust, in the time that charger connects mobile terminal, detect the filter parameter of this charger inside by mobile terminal, and judge this filterWhether legal the determining whether of ripple device parameter opened charging, and non-standard configuration charger can not be charged to mobile terminal, avoided makingBy the non-standard configuration mobile terminal various charging safety problems that cause of charging, make charging more safe and reliable, bring greatly to userLarge convenience, its implementation is simple, and cost is lower.
Brief description of the drawings
Fig. 1 is the structured flowchart of charger detection system preferred embodiment provided by the invention.
Fig. 2 is the circuit diagram of charger in charger detection system Application Example provided by the invention.
Fig. 3 is the circuit diagram of mobile terminal in charger detection system Application Example provided by the invention.
Fig. 4 is that the structure of charger detection system Application Example median filter parameter detection module provided by the invention is shownIntention.
Fig. 5 is the amplitude versus frequency characte signal of low pass filter in charger detection system Application Example provided by the inventionFigure.
Fig. 6 is the flow chart of method for measuring charged preferred embodiment provided by the invention.
Detailed description of the invention
The invention provides a kind of charger detection system and method for measuring charged thereof, for making object of the present invention, technical sideCase and advantage are clearer, clear and definite, and developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment. Should be appreciated thatSpecific embodiment described herein only, in order to explain the present invention, is not intended to limit the present invention.
Refer to Fig. 1, Fig. 1 is the structured flowchart of charger detection system preferred embodiment provided by the invention, described in fillElectrical equipment detection system, comprises mobile terminal 200 and the charger 100 for charging to mobile terminal 200, wherein, and described chargingDevice 100 comprises: for the charging output module 110 of output voltage and electric current; There is the filter module 120 of filter parameter;For connecting the charging output interface module 130 of mobile terminal 200; Described charging output module 110, filter module 120 andCharging output interface module 130 connects successively. Described mobile terminal 200 comprises: the charging input for connecting charger 100 connectsMouth module 210; For detection of the filter parameter detection module 220 of the filter parameter of charger 100; For opening or closingThe charge control module 230 of charge function; For the filter parameter memory module 240 of memory filter parameter; Described chargingInput interface module 210, filter parameter detection module 220 and charge control module 230 are connected successively; Described filter parameterMemory module 240 connects filter parameter detection module 220; Described charging output interface module 130 connects charging input interfaceModule 210.
Specifically, in the time that described charging output interface module 130 connects charging input interface module 210, wave filter ginsengNumber detection module 220 detects the filter parameter of charger 100, the namely filter parameter of filter module 120, and searchIn filter parameter memory module 240, whether store the filter parameter of described filter module 120, if had, chargingControl module 230 is opened charge function; If no, charge control module 230 charge closing functions. That is to say, work as filterRipple device parameter detection module 220 detects after the filter parameter of charger 100, just inquires about filter parameter memory module 240The filter parameter of the permission of middle storage, if the filter parameter of this charger can be looked in filter parameter memory module 240Find, notify charge control module 230 to open charge function, namely allow charger 100 to charge to mobile terminal 200;Otherwise, notify charge control module 230 charge closing functions, do not allow charger 100 to fill mobile terminal 200Electricity.
Specifically, described filter parameter comprises: filter type, upper cut-off frequency and lower-cut-off frequency.
Further, described mobile terminal 200 also comprises: for detection of charging output interface module 130 and charging inputThe charger connection detection module 250(whether interface module 210 connects refers to Fig. 3); Described charger connection detection module250 connect charging input interface module 210. That is to say, can detect charger by this charger connection detection module 250Whether 100 connect with mobile terminal 200.
Further, described filter parameter detection module 220 comprises:
Be used for the signal generating unit of the signal of exporting different frequency;
The detecting signal unit whether can filtered device module filtering for detection of the signal of different frequency;
Draw the wave filter ginseng of filter module for the filter result of the signal to different frequency according to filter moduleThe filter parameter analytic unit of number;
Described signal generating unit, detecting signal unit and filter parameter analytic unit are connected successively. Specifically, electricityWhen device is connected with mobile terminal, the ascending signal of exporting successively various frequencies of mobile terminal, to charger, is checked various frequenciesWhether rate signal can be filtered by the wave filter of charger inside; Can obtain filtering result according to detecting signal unit, and thenCan draw the filter parameter of charger inside: filter type, upper cut-off frequency and lower-cut-off frequency.
Further, described detecting signal unit detects the amplitude of the feedback signal of charger, and by the width of feedback signalDegree contrasts with a threshold value, in the time that amplitude is less than threshold value, and the filtered device of signal of the respective frequencies of signal generating unit outputModule is filtered. Specifically, when charger is connected with mobile terminal, exported the signal of a certain frequency by mobile terminal to chargingDevice, this signal amplitude is certain; The signal of acquisition for mobile terminal charger feedback, detects the amplitude of this feedback signal, if feedback letterNumber be less than threshold value and think that the frequency of signal of mobile terminal output filtered by the wave filter of charger inside; Wherein, described inThreshold value is 0.7 times of mobile terminal amplitude output signal.
With a concrete Application Example, the present invention is described in detail below.
Refer to Fig. 2, Fig. 2 is the circuit signal of charger in charger detection system Application Example provided by the inventionFigure, the circuit diagram of the charger of the present embodiment, charger comprises the charging output module 110, the low pass filter 120 that connect successivelyWith charging output interface module 130. Described charging output interface module 130 is specially a charging output interface. Wherein, described in, fillElectricity module 110 is for generation of charging voltage and charging current, and this charging voltage is 5V DC voltage. Described charging output interface is usedIn connecting mobile terminal, comprise VBUS, DP, DN, tetra-pins of GND. It is defeated that the input of described low pass filter 120 connects chargingThe DP pin of outgoing interface, the output of low pass filter 120 connects the DN pin of charging output interface. The low pass filter of this charger120, by resistance R, capacitor C composition, its amplitude versus frequency characte A (f) is as follows:。
Refer to Fig. 3, it is the mobile terminal of this application embodiment, mobile terminal comprise charging input interface module 210,Filter parameter detection module 220, charge control module 230, filter parameter memory module 240 are connected detection mould with chargerPiece 250.
Described charging input interface module 210, is specially a charging input interface, comprises that VBUS, DP, DN, tetra-of GND drawPin, in the time that mobile terminal is connected with charger, four pins of mobile terminal charging input interface charge with charger respectivelyFour pins of output interface are connected. Described charge control module 230 is for opening or charge closing function. Described chargerWhether connection detection module 250 is connected with charging input interface for detection of charger, and it detects principle for judging VBUS pinOn whether have 5V voltage, if had, think whether charger is connected with charging input interface, otherwise think charger whether withCharging input interface does not connect. Described filter parameter detection module 220 is in the time that charger is connected with charging input interface,Detect the filter parameter of charger; And in filter parameter memory module 240, search filter parameter detection module 220 and obtainThe filter parameter of the charger of getting, if can find, notifies charge control module 230 to open charge function.
Refer to Fig. 4, Fig. 4 is charger detection system Application Example median filter parameter detecting mould provided by the inventionThe structural representation of piece, described filter parameter detection module 220 connects DP pin and the DN pin of charging input interface, wave filter ginsengNumber detection modules 220 also comprise signal generator 711, frequency setting module 712, amplitude arrange module 713, voltage reduction module 714,Voltage comparison module 715 and filter parameter computing module 716.
In filter parameter detection module 220, frequency setting module 712 starts, taking 100Hz as step value, to comply with from 1HzInferior signalization generator 711 produces the frequency of signal, and signal generator 711 produces sine wave signal; Amplitude arranges module 713All the time the sinusoidal wave amplitude that signalization generator 711 produces is 3.3V, and in addition, amplitude arranges module 713 and also range value passedPass voltage reduction module 714, the 2.31V(3.3V*0.7 of voltage reduction module 714 stable outputs) signal is to voltage comparison module 715; ElectricityPress comparison module 715 relatively the voltage of DN pin input in the time of 1/f and the size of 2.31V, if within the time of 1/f DN pinThe voltage of input is less than frequency that 2.31V thinks that signal generator produces to be all the time f the filtered device of signal has filtered, otherwiseThink frequency that signal generator produces to be f the not filtered device of signal filters, wherein f is that frequency setting module 712 arrangesSignal frequency. Method that namely whether the above-mentioned signal of judging frequency is filtered is the feedback signal that detects this signalWhether amplitude surpasses 0.7 times of this signal amplitude. If in the ascending frequency that signal generator 711 produces successively: if littleBe not filtered in f, be greater than f and be filtered, filter type is low pass filter, and cut-off frequency is f; Be filtered if be less than f, largeBe not filtered in f, filter type is high-pass filter, and cut-off frequency is f; Be filtered if be less than f1 or be greater than f2, be greater thanF1 and be less than f2 and be not filtered, filter type is bandpass filter, and lower-cut-off frequency is f1, and upper cut-off frequency isF2; Be filtered if be greater than f1 and be less than f2, be less than f1 or be greater than f2 and be not filtered, filter type is bandstop filter, underLimit cut-off frequency is f1, and upper cut-off frequency is f2; If all frequencies are not all filtered, filter type is all-pass wave filteringDevice; If all frequencies are all filtered, filter type is full resistance wave filter. Wherein, frequency f 1 is less than frequency f 2.
After detecting the filtering parameter of wave filter, from ripple device parameter memory module 240, search filter parameterThe filter parameter of the charger that detection module 220 gets, if can find, notifies charge control module 230 to openCharge function. Refer to Fig. 5, for example, in filter parameter memory module, allow the inner filter parameter of charger to be: low passWave filter, cut-off frequency 10kHz; , in the charger circuit shown in Fig. 5, need meet following formula can charge:。
Charger detection system provided by the invention, in the time that charger connects mobile terminal, detects this by mobile terminalThe filter parameter of charger inside, and judge this filter parameter whether legal determine whether open charging, make non-standard configurationCharger can not charge to mobile terminal, has avoided using the non-standard configuration mobile terminal various charging safety problems that cause of charging,Make charging more safe and reliable. In the time producing the mobile terminal charger supporting with it, configure accordingly respectively, make itIts charger just cannot charge to mobile terminal, thereby has improved security.
Based on above-mentioned charger detection system, the present invention also provides a kind of charger detection method, refers to Fig. 6, Fig. 6For the flow chart of charger detection method provided by the invention preferred embodiment, as shown in Figure 6, described charger detection method bagDraw together:
Step S100, in the time that charger is connected with mobile terminal, mobile terminal detects the filter parameter of charger;
Step S200, search the filter parameter that whether stores described charger in mobile terminal, if had, openCharge function; If no, charge closing function.
Specifically, described step S100 specifically comprises:
S110, in the time that charger is connected with mobile terminal, mobile terminal is exported the signal of various frequencies to charger, and inspectionWhether the signal of surveying various frequencies can be filtered by the filter module of charger inside; S120, according to the signal quilt of various frequenciesThe filter result that filter module filters, draws the filter parameter of the filter module of charger.
Preferably, described step S110 specifically comprises:
S111, in the time that charger is connected with mobile terminal, mobile terminal is exported the signal of a certain frequency to charger, this letterNumber amplitude certain;
The signal of S112, acquisition for mobile terminal charger feedback, and detect the amplitude of this feedback signal, if feedback signalAmplitude is less than a threshold value, and the signal of this frequency is filtered by the filter module of charger. Preferably, described threshold value is for eventually mobile0.7 times of the amplitude of the signal of a certain frequency of end output.
Preferably, described step S120 specifically comprises:
If the signal of the frequency from small to large of S121 mobile terminal output is filtered entirely, the wave filter mould of chargerThe type of piece is full resistance wave filter;
If the signal of the frequency from small to large of S122 mobile terminal output is not filtered entirely, the filter of charger insideThe type of ripple device module is all-pass filter;
If S123 frequency is not filtered while being less than first threshold, if be filtered when frequency is greater than first threshold, chargerThe type of filter module be low pass filter, and the cut-off frequency of this low pass filter is first threshold;
If S124 frequency is filtered while being less than first threshold, if be not filtered when frequency is greater than first threshold, chargerThe type of filter module be high-pass filter, and the cut-off frequency of this high-pass filter is first threshold;
If S125 frequency is filtered while being less than first threshold, if be also filtered when frequency is greater than Second Threshold, when frequency largeBe not filtered in first threshold and while being less than Second Threshold, the type of the filter module of charger is bandpass filter, andThe lower-cut-off frequency of this bandpass filter is first threshold, and upper cut-off frequency is Second Threshold;
If S126 frequency is not filtered while being less than first threshold, if be not filtered when frequency is greater than Second Threshold, when frequently yetRate is filtered when being greater than first threshold and being less than Second Threshold, and the type of the filter module of charger is bandstop filter,And the lower-cut-off frequency of this bandstop filter is first threshold, upper cut-off frequency is Second Threshold; Wherein, described the second thresholdValue is greater than first threshold.
Specifically, described first threshold is above-mentioned frequency f 1, and described Second Threshold is above-mentioned frequency f 2.
In the time of practical application, in the time that charger described in embodiment is connected with mobile terminal, will start charger detection sideMethod. When charger connection detection module detects 5V voltage, think that charger is connected with mobile terminal, notice filter parameterWhether detection module detects this charger legal. Filter parameter detection module detects the parameter of the wave filter of charger inside,And whether the parameter that judges this wave filter in filter parameter memory module allows charging; If the inner wave filter of this chargerParameter allow charging, store in the filter parameter memory module at mobile terminal at the filter parameter of charger,Start charging by charge control module. If do not exist, by charge control module charge closing. Described filter parameterComprise: filter type, upper cut-off frequency and lower-cut-off frequency. Described mobile terminal is that mobile phone or panel computer etc. are mobileTerminal.
In sum, a kind of charger detection system provided by the invention and method for measuring charged thereof, described charger inspectionExamining system comprises: mobile terminal and the charger for charging to mobile terminal, wherein, described charger comprises: charging outputInterface module, charging output module and filter module; Described charging output module, filter module and charging output interface mouldPiece connects successively; Described mobile terminal comprises: charging input interface module, filter parameter detection module, filter parameter are depositedStorage module and charge control module; Described charging input interface module, filter parameter detection module and charge control module are complied withInferior connection; Described filter parameter memory module connects filter parameter detection module; Described charging output interface module connectsCharging input interface module; In the time that described charging output interface module connects charging input interface module, filter parameter detectsModule detects the filter parameter of charger, and searches in filter parameter memory module, whether to store described filter moduleFilter parameter, if had, charge control module open charge function; If no, charge control module is closed and is filledElectricity Functional; Make, in the time that charger connects mobile terminal, to detect the filter parameter of this charger inside by mobile terminal, andJudge this filter parameter whether legal determine whether open charging, non-standard configuration charger can not be charged to mobile terminal,Avoid using the non-standard configuration mobile terminal various charging safety problems that cause of charge, made charging more safe and reliable, to userIt is convenient greatly to have brought, and its implementation is simple, and cost is lower.
Should be understood that, application of the present invention is not limited to above-mentioned giving an example, for those of ordinary skills, and canTo be improved according to the above description or to convert, all these improvement and conversion all should belong to the guarantor of claims of the present inventionProtect scope.
Claims (10)
1. a charger detection system, comprises mobile terminal and for the charger to mobile terminal charging, it is characterized in that,Described charger comprises:
For connecting the charging output interface module of mobile terminal;
For the charging output module of output voltage and electric current;
There is the filter module of filter parameter;
Described charging output module, filter module and charging output interface module are connected successively;
Described mobile terminal comprises:
For the charging input interface module of connecting charger;
For detection of the filter parameter detection module of the filter parameter of charger;
For the filter parameter memory module of memory filter parameter;
For opening or the charge control module of charge closing function;
Described charging input interface module, filter parameter detection module are connected successively with charge control module; Described wave filterParameter memory module connects filter parameter detection module; Described charging output interface module connects charging input interface module;
In the time that described charging output interface module connects charging input interface module, filter parameter detection module detects chargerFilter parameter, and search the filter parameter that whether stores described filter module in filter parameter memory module,If had, charge control module is opened charge function; If no, charge control module charge closing function.
2. charger detection system according to claim 1, is characterized in that, described filter parameter comprises: wave filterType, upper cut-off frequency and lower-cut-off frequency.
3. charger detection system according to claim 1, is characterized in that, described mobile terminal also comprises: for inspectionSurvey the charger connection detection module whether charging output interface module is connected with charging input interface module; Described charger connectsConnect detection module and connect charging input interface module.
4. charger detection system according to claim 1, is characterized in that, described filter parameter detection module bagDraw together:
Be used for the signal generating unit of the signal of exporting different frequency;
The detecting signal unit whether can filtered device module filtering for detection of the signal of different frequency;
For according to filter module, the filter result of the signal to different frequency draws the filter parameter of filter moduleFilter parameter analytic unit;
Described signal generating unit, detecting signal unit and filter parameter analytic unit are connected successively.
5. charger detection system according to claim 4, is characterized in that, described detecting signal unit detects chargerThe amplitude of feedback signal, and the amplitude of feedback signal and a threshold value are contrasted, in the time that amplitude is less than threshold value, signal occursThe filtered device module of signal of the respective frequencies of unit output is filtered.
6. a method for measuring charged for charger detection system according to claim 4, is characterized in that, comprises followingStep:
A, in the time that charger is connected with mobile terminal, mobile terminal detects the filter parameter of charger;
B, search the filter parameter that whether stores described charger in mobile terminal, if had, open charge function; AsFruit does not have, charge closing function.
7. method for measuring charged according to claim 6, is characterized in that, described steps A specifically comprises:
A1, in the time that charger is connected with mobile terminal, mobile terminal is exported the signal of various frequencies to charger, and detects variousWhether the signal of frequency can be filtered by the filter module of charger inside;
A2, the filter result of filtering according to the filtered device module of the signal of various frequencies, draw the filter module of chargerFilter parameter.
8. method for measuring charged according to claim 7, is characterized in that, described steps A 1 specifically comprises:
A11, in the time that charger is connected with mobile terminal, mobile terminal is exported the signal of a certain frequency to charger, this signalAmplitude is certain;
The signal of A12, acquisition for mobile terminal charger feedback, and detect the amplitude of this feedback signal, if the amplitude of feedback signalBe less than a threshold value, the signal of this frequency is filtered by the filter module of charger.
9. method for measuring charged according to claim 8, is characterized in that, in described steps A 12, described threshold value is for movingMoving terminal is exported 0.7 times of amplitude of the signal of a certain frequency.
10. method for measuring charged according to claim 7, is characterized in that, described steps A 2 specifically comprises:
If the signal of the frequency from small to large of A21 mobile terminal output is filtered entirely, the class of the filter module of chargerType is full resistance wave filter;
If the signal of the frequency from small to large of A22 mobile terminal output is not filtered entirely, the wave filter mould of charger insideThe type of piece is all-pass filter;
If A23 frequency is not filtered while being less than first threshold, if be filtered when frequency is greater than first threshold, the filter of chargerThe type of ripple device module is low pass filter, and the cut-off frequency of this low pass filter is first threshold;
If A24 frequency is filtered while being less than first threshold, if be not filtered when frequency is greater than first threshold, the filter of chargerThe type of ripple device module is high-pass filter, and the cut-off frequency of this high-pass filter is first threshold;
If A25 frequency is filtered while being less than first threshold, if be also filtered when frequency is greater than Second Threshold, when frequency is greater thanOne threshold value and not being filtered while being less than Second Threshold, the type of the filter module of charger is bandpass filter, and this bandThe lower-cut-off frequency of bandpass filter is first threshold, and upper cut-off frequency is Second Threshold;
If A26 frequency is not filtered while being less than first threshold, if be not filtered when frequency is greater than Second Threshold yet, when frequency largeBe filtered in first threshold and while being less than Second Threshold, the type of the filter module of charger is bandstop filter, and shouldThe lower-cut-off frequency of bandstop filter is first threshold, and upper cut-off frequency is Second Threshold;
Wherein, described Second Threshold is greater than first threshold.
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| CN104007342A (en) * | 2014-05-23 | 2014-08-27 | Tcl通讯（宁波）有限公司 | Charger, charger detection system and detection method thereof |
| CN104237675B (en) * | 2014-08-18 | 2017-02-15 | 深圳市财富之舟科技有限公司 | Method and system for testing mobile phone charger |
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