CN105137325A - FPC detecting device and method - Google Patents
FPC detecting device and method Download PDFInfo
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- CN105137325A CN105137325A CN201510554243.4A CN201510554243A CN105137325A CN 105137325 A CN105137325 A CN 105137325A CN 201510554243 A CN201510554243 A CN 201510554243A CN 105137325 A CN105137325 A CN 105137325A
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Abstract
The invention discloses a FPC detecting device and method. The FPC detecting device comprises a small FPC board and a main board. When being powered on, the main board acquires the board type information of the small FPC board, determines whether the board type information is the same as stored board type information, and searches, loads, and stores a corresponding driving program according to the board type information if not. The device greatly shortens time required by a conventional case that driving programs are required to be matched and loaded one by one, prevents a problem of a unstable system due to a large number of loading errors, and may search and load the corresponding driving program even the small FPC board is replaced so as to improve the compatibility of the small FPC board.
Description
Technical field
The present invention relates to technical field of mobile terminals, in particular a kind of FPC pick-up unit and detection method.
Background technology
At present, mobile terminal generally adopts LCD(LiquidCrystalDisplay), the parts such as Camera are contained in FPC(FlexiblePrintedCircuit, flexible PCB) upper formation FPC platelet, then when assembling, FPC platelet is connected with mainboard, thus improves the assembling of mobile terminal, the efficiency of production.
When actual production, due to the factor such as price, supply, multiple supplier often selects for used parts in mobile terminal manufacturer.Such as Samsung selected for LCD, believe that profit two is supplied, then by FPC producer, the LCD of two is assembled on FPC.When mobile terminal assembles, only need obtain corresponding FPC from FPC producer is installed to mobile terminal.
Due to different FPC using different parts, the parts on a FPC may derive from different suppliers, therefore need the driving of loading more and not identical.In prior art, the driving of multiple supplier is loaded one by one to the parts on FPC, until can successfully load.When the supply businessman less fashion of number of parts can use the method, when supplying businessman's number and being more, often need repeatedly to attempt could successfully loading corresponding driving, not only lose time, and a large amount of loading errors also can make system unstable.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide a kind of FPC pick-up unit and detection method, it is time-consuming and easily make the problem of system instability to be intended to solve existing FPC load driver.
The technical scheme that technical solution problem of the present invention adopts is as follows:
A kind of FPC pick-up unit, it comprises FPC platelet and mainboard;
During start, whether mainboard obtains the template information of FPC platelet and judges identical with the template information stored; Not identical, the drive load corresponding according to described template information searching also stores.
In described FPC pick-up unit, described FPC platelet comprises RC circuit, and described RC circuit comprises resistance and characteristic capacitance, and one end of described resistance is by characteristic capacitance ground connection, and the other end of resistance connects mainboard;
Described template information is the capacitance of characteristic capacitance, and resistance resistance on different FPC platelets is all identical, and the capacitance of characteristic capacitance is corresponding with each FPC platelet.
In described FPC pick-up unit, described mainboard comprises:
FPC detection module, for detecting the capacitance of characteristic capacitance on FPC platelet as described template information;
Processing module, for judging the capacitance of characteristic capacitance and the whether identical of storage of detection; Not identical, search corresponding drive load according to the capacitance of the characteristic capacitance of current detection and store.
In described FPC pick-up unit, described FPC detection module comprises:
Voltage output unit, for exporting supply voltage to RC circuit, to charge to characteristic capacitance; And stop exporting supply voltage when output voltage is equal with charging voltage;
Voltage acquisition unit, for obtaining the output voltage of RC circuit, judges whether output voltage equals charging voltage; Timer is started time equal, and enable comparer;
Comparer, for the output voltage of RC circuit and the threshold voltage of setting are compared,
Timer, starts timing when being activated, and stops timing when output voltage is equal with threshold voltage and adds up timing time;
Computing unit, for the capacitance according to characteristic capacitance on the computing the resistor value FPC platelet of timing time and resistance.
In described FPC pick-up unit, described threshold voltage is that supply voltage is multiplied by 36.8%, and the computing formula of characteristic capacitance is: C=t/R; Wherein, t is timing time, and R is the resistance of resistance.
In described FPC pick-up unit, described processing module comprises:
Drive storage unit, for storing the driving of all templates of FPC platelet, and the capacitance of each template characteristic of correspondence electric capacity;
Unit is searched in driving, for judging the whether identical, not identical of the capacitance of the characteristic capacitance calculated and storage, inquiring about corresponding driving according to the capacitance of current signature electric capacity and storing driving in storage unit;
Drive load unit, searches for load driver the driving that unit finds.
A kind of FPC detection method, it comprises:
When A, start, whether mainboard obtains the template information of FPC platelet and judges identical with the template information stored;
B, identical, the drive load corresponding according to described template information searching does not also store.
In described FPC detection method, described steps A specifically comprises:
When A1, start, voltage output unit exports supply voltage to RC circuit, to charge to characteristic capacitance;
A2, voltage acquisition unit obtain the output voltage of RC circuit, judge whether output voltage equals charging voltage; Perform steps A 3;
A3, stop exporting supply voltage to RC circuit, start timer, and enable comparer;
The output voltage of RC circuit and the threshold voltage of setting compare by A4, comparer, and when output voltage is equal with threshold voltage, timer stops timing and adds up timing time;
A5, computing unit are according to the capacitance of characteristic capacitance on the computing the resistor value FPC platelet of timing time and resistance.
In described FPC detection method, before described steps A, also comprise: the driving driving all templates of cell stores FPC platelet, and the capacitance of each template characteristic of correspondence electric capacity.
In described FPC detection method, described step B specifically comprises:
The capacitance of the characteristic capacitance that unit judges calculates and the whether identical of storage are searched in B1, driving, not identical, and the capacitance according to current signature electric capacity is inquired about corresponding driving and stores in driving storage unit;
B2, drive load unit load driver search the driving that unit finds.
Compared to prior art, FPC pick-up unit provided by the invention and detection method, during start, whether mainboard obtains the template information of FPC platelet and judges identical with the template information stored; Not identical, the drive load corresponding according to described template information searching also stores; Substantially reduce the time that existing driving need mate loading one by one, a large amount of loading error can also be avoided to cause the problem of system instability, also can inquire corresponding driving even if FPC platelet is changed and load, improve the compatibility of FPC platelet.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of FPC pick-up unit provided by the invention.
Fig. 2 is the circuit diagram of RC circuit in FPC platelet provided by the invention.
Fig. 3 is the structured flowchart of FPC pick-up unit Application Example provided by the invention.
Fig. 4 is FPC detection method process flow diagram provided by the invention.
Embodiment
The invention provides a kind of FPC pick-up unit and detection method, be intended to solve the defect of the drive load inconvenience that type that existing mobile terminal can not detect FPC platelet is brought.For making object of the present invention, technical scheme and advantage clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Please refer to Fig. 1 and Fig. 2, FPC pick-up unit provided by the invention is arranged in the terminal, and it comprises FPC platelet 100 and mainboard 200; Described FPC platelet 100 connects mainboard 200.When mobile terminal-opening, whether described mainboard 200 obtains the template information of FPC platelet 100 and judges identical, not identical with the template information stored, and the drive load corresponding according to described template information searching also stores.During initialization, mainboard 200 does not store any template information.The template information obtained if judge is identical with storage, then keep working as front wheel driving, no longer repeats to search drive and load.
Described template information can be the model of FPC platelet, and numbered by research staff when dispatching from the factory and be stored in FPC platelet, mainboard directly reads this model.In the present embodiment, template information is represented by the capacitance of characteristic capacitance ad hoc in FPC platelet 100.Namely a RC circuit is provided with in described FPC platelet; Described RC circuit comprises a resistance R and a characteristic capacitance C(is a conventional capacitive, different FPC platelets is distinguished herein by the capacitance of this electric capacity, be defined as characteristic capacitance herein), one end of described resistance R is by characteristic capacitance C ground connection, and the other end of resistance R connects mainboard 200.Wherein, the size of resistance R resistance on different FPC platelets is all identical.The present embodiment characterizes different FPC platelets with the different capacitances of characteristic capacitance, and namely characteristic capacitance C capacitance on different FPC platelets is all not identical.Type based on electronic unit set on a kind of FPC platelet of template is certain (namely which supplier electronic unit derives from is known), and the driving that each electronic unit needs is known.The FPC platelet of the corresponding a kind of template of capacitance of a characteristic capacitance.Which kind of FPC platelet can be identified by the capacitance of different characteristic capacitances is like this, thus can inquire the various drivings of this FPC platelet needs.
In the present embodiment, described mainboard 200 comprises FPC detection module 210 and processing module 220.Described FPC detection module 210 connects FPC platelet (i.e. the other end of resistance R) and processing module 220.Described FPC detection module 210 is for detecting the capacitance of characteristic capacitance on FPC platelet.Processing module 220 judges the capacitance of characteristic capacitance and the whether identical of storage of detection; Not identical, search corresponding drive load according to the capacitance of the characteristic capacitance of current detection and store.
See also Fig. 3, described FPC detection module 210 comprises voltage output unit 211, voltage acquisition unit 212, comparer 213, timer 214 and computing unit 215.Described voltage output unit 211 connects the other end of voltage acquisition unit 212, comparer 213, timer 214 and resistance R, described comparer 213 connects voltage acquisition unit 212 and timer 214, and described timer 214 connects voltage acquisition unit 212 and computing unit 215.
Described voltage output unit 211 is connected with the RC circuit on FPC platelet, for exporting supply voltage U0 to described RC circuit, to charge to characteristic capacitance C.Described voltage acquisition unit 211 obtains the output voltage U1 on RC circuit, and judges whether output voltage U1 equals charging voltage U0.In charging process, output voltage U1 constantly rises final equal with supply voltage U0, supply voltage U0 and output voltage U1 share one line road.Time equal, voltage output unit 211 stops exporting supply voltage U0, and now, timer 214 starts and starts timing.The output voltage U1 of RC circuit and the threshold voltage U2 of setting compares by comparer 213.Wherein, described threshold voltage U2 is that supply voltage U0 is multiplied by 36.8%, i.e. U2=U0 × 36.8%.When output voltage U1 is equal with threshold voltage U2, timer 214 stops timing, statistics timing time t.Computing unit 215 can calculate the capacitance of the characteristic capacitance on current the be connected FPC platelet 100 of mainboard 200 according to timing time t and the resistance of resistance R.The computing formula of characteristic capacitance is:
C=t/R; Wherein, t is timing time, after namely supply voltage U0 stops exporting, and the time that the output voltage U1 of RC circuit experiences when U0 drops to U0 × 36.8%; R is the resistance of resistance, to be stored in advance in computing unit 215.
Please continue to refer to Fig. 3, described processing module 220 comprises: drive storage unit 221, drive and search unit 222 and drive load unit 223.Described driving is searched unit 222 and is connected driving storage unit 221, drive load unit 223 and computing unit 215.
The driving of all templates of FPC platelet is stored in described driving storage unit 221, and the capacitance of each template characteristic of correspondence electric capacity.Described driving is searched unit 222 and is judged the capacitance of the characteristic capacitance calculated and the whether identical of storage, not identical, and the capacitance according to current signature electric capacity is inquired about corresponding driving and stores in driving storage unit.Described drive load unit 223 load driver searches the driving that unit 222 finds, and FPC platelet can normally be used.
Based on above-mentioned FPC pick-up unit, the present invention also provides a kind of FPC detection method, refers to Fig. 4, and described FPC detection method comprises:
When S100, start, whether mainboard obtains the template information of FPC platelet and judges identical with the template information stored;
S200, identical, the drive load corresponding according to described template information searching does not also store.
In described step S100, FPC detection module detects the capacitance of characteristic capacitance on FPC platelet as described template information.In described step S200, processor judges the capacitance of characteristic capacitance and the whether identical of storage of detection; Not identical, search corresponding drive load according to the capacitance of the characteristic capacitance of current detection and store.
Wherein, described step S100 specifically comprises:
When step 101, start, voltage output unit exports supply voltage to RC circuit, to charge to characteristic capacitance;
Step 102, voltage acquisition unit obtain the output voltage of RC circuit, judge whether output voltage equals charging voltage; Perform step 103;
Step 103, stop exporting supply voltage to RC circuit, start timer, and enable comparer;
When voltage output unit 211 stops exporting supply voltage U0 to the RC circuit on FPC platelet (in RC circuit during U1=U0), RC circuit will start electric discharge, and its output voltage U1 can reduce gradually, meets the differential equation:
, the solution of this differential equation is:
In above formula, e is constant 2.71828, and can find out that the speed of voltage attenuation on characteristic capacitance C depends on the size of 1/RC in index, its size only depends on R and C in circuit.When the unit of resistance R is Ω (ohm), the unit of characteristic capacitance C is F(farad) time, the unit of product RC is s(second); As U1=U0*36.8%, t=RC, therefore C can be calculated divided by R by t during U1=U0*36.8%.Therefore, the comparison carrying out lower step is needed.
The output voltage of RC circuit and the threshold voltage of setting compare by step 104, comparer, and when output voltage is equal with threshold voltage, timer stops timing and adds up timing time;
Step 105, computing unit are according to the capacitance of characteristic capacitance on the computing the resistor value FPC platelet of timing time and resistance.
The computing formula of characteristic capacitance is: C=t/R.
Before described step S100, also comprise: the driving driving all templates of cell stores FPC platelet, and the capacitance of each template characteristic of correspondence electric capacity.
Described step S200 specifically comprises:
Step 201, driving search the capacitance of the characteristic capacitance that unit judges calculates and the whether identical of storage, not identical, and the capacitance according to current signature electric capacity is inquired about corresponding driving and stores in driving storage unit;
Step 202, drive load unit load driver search the driving that unit finds.
In sum, the present invention by arranging the different characteristic capacitance of capacitance in advance on each FPC platelet, detect the capacitance of the characteristic capacitance on current connected FPC platelet to obtain corresponding driving when starting shooting, thus effectively can solve in prior art and need to load one by one the defect that the load time that the driving that may use brings is long, easily cause system instability; Also can inquire corresponding driving even if FPC platelet is changed and load, improve the compatibility of FPC platelet.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (10)
1. a FPC pick-up unit, is characterized in that, comprises FPC platelet and mainboard;
During start, whether mainboard obtains the template information of FPC platelet and judges identical with the template information stored; Not identical, the drive load corresponding according to described template information searching also stores.
2. FPC pick-up unit according to claim 1, is characterized in that, described FPC platelet comprises RC circuit, and described RC circuit comprises resistance and characteristic capacitance, and one end of described resistance is by characteristic capacitance ground connection, and the other end of resistance connects mainboard;
Described template information is the capacitance of characteristic capacitance, and resistance resistance on different FPC platelets is all identical, and the capacitance of characteristic capacitance is corresponding with each FPC platelet.
3. FPC pick-up unit according to claim 2, is characterized in that, described mainboard comprises:
FPC detection module, for detecting the capacitance of characteristic capacitance on FPC platelet as described template information;
Processing module, for judging the capacitance of characteristic capacitance and the whether identical of storage of detection; Not identical, search corresponding drive load according to the capacitance of the characteristic capacitance of current detection and store.
4. FPC pick-up unit according to claim 3, is characterized in that, described FPC detection module comprises:
Voltage output unit, for exporting supply voltage to RC circuit, to charge to characteristic capacitance; And stop exporting supply voltage when output voltage is equal with charging voltage;
Voltage acquisition unit, for obtaining the output voltage of RC circuit, judges whether output voltage equals charging voltage; Timer is started time equal, and enable comparer;
Comparer, for the output voltage of RC circuit and the threshold voltage of setting are compared,
Timer, starts timing when being activated, and stops timing when output voltage is equal with threshold voltage and adds up timing time;
Computing unit, for the capacitance according to characteristic capacitance on the computing the resistor value FPC platelet of timing time and resistance.
5. FPC pick-up unit according to claim 4, is characterized in that, described threshold voltage is that supply voltage is multiplied by 36.8%, and the computing formula of characteristic capacitance is: C=t/R; Wherein, t is timing time, and R is the resistance of resistance.
6. FPC pick-up unit according to claim 3, is characterized in that, described processing module comprises:
Drive storage unit, for storing the driving of all templates of FPC platelet, and the capacitance of each template characteristic of correspondence electric capacity;
Unit is searched in driving, for judging the whether identical, not identical of the capacitance of the characteristic capacitance calculated and storage, inquiring about corresponding driving according to the capacitance of current signature electric capacity and storing driving in storage unit;
Drive load unit, searches for load driver the driving that unit finds.
7. a FPC detection method, is characterized in that, comprising:
When A, start, whether mainboard obtains the template information of FPC platelet and judges identical with the template information stored;
B, identical, the drive load corresponding according to described template information searching does not also store.
8. FPC detection method according to claim 7, is characterized in that, described steps A specifically comprises:
When A1, start, voltage output unit exports supply voltage to RC circuit, to charge to characteristic capacitance;
A2, voltage acquisition unit obtain the output voltage of RC circuit, judge whether output voltage equals charging voltage; Perform steps A 3;
A3, stop exporting supply voltage to RC circuit, start timer, and enable comparer;
The output voltage of RC circuit and the threshold voltage of setting compare by A4, comparer, and when output voltage is equal with threshold voltage, timer stops timing and adds up timing time;
A5, computing unit are according to the capacitance of characteristic capacitance on the computing the resistor value FPC platelet of timing time and resistance.
9. FPC detection method according to claim 7, is characterized in that, before described steps A, also comprises: the driving driving all templates of cell stores FPC platelet, and the capacitance of each template characteristic of correspondence electric capacity.
10. FPC detection method according to claim 9, is characterized in that, described step B specifically comprises:
The capacitance of the characteristic capacitance that unit judges calculates and the whether identical of storage are searched in B1, driving, not identical, and the capacitance according to current signature electric capacity is inquired about corresponding driving and stores in driving storage unit;
B2, drive load unit load driver search the driving that unit finds.
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| CN201510554243.4A CN105137325A (en) | 2015-09-02 | 2015-09-02 | FPC detecting device and method |
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| CN201510554243.4A CN105137325A (en) | 2015-09-02 | 2015-09-02 | FPC detecting device and method |
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| CN105758441A (en) * | 2016-02-16 | 2016-07-13 | 惠州Tcl移动通信有限公司 | Mobile terminal board type detection method and system |
| CN106445862A (en) * | 2016-09-06 | 2017-02-22 | 广州视睿电子科技有限公司 | Identification circuit and method of plugging module |
| CN107423254A (en) * | 2017-06-12 | 2017-12-01 | 广东欧珀移动通信有限公司 | The recognition methods of audio platelet, computer-readable recording medium, mobile terminal |
| CN114073442A (en) * | 2020-08-21 | 2022-02-22 | 北京石头世纪科技股份有限公司 | Dust collector and working mode selection method thereof |
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| CN114073442A (en) * | 2020-08-21 | 2022-02-22 | 北京石头世纪科技股份有限公司 | Dust collector and working mode selection method thereof |
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Application publication date: 20151209 |