CN103091586A - Standard configuration charger discriminated method for capacitive touch screen - Google Patents
Standard configuration charger discriminated method for capacitive touch screen Download PDFInfo
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- CN103091586A CN103091586A CN2013100229887A CN201310022988A CN103091586A CN 103091586 A CN103091586 A CN 103091586A CN 2013100229887 A CN2013100229887 A CN 2013100229887A CN 201310022988 A CN201310022988 A CN 201310022988A CN 103091586 A CN103091586 A CN 103091586A
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Abstract
The invention discloses a standard configuration charger discriminated method for a capacitive touch screen. The capacitive touch screen is assembled on an electronic product. The electronic product is connected to a charger for charging. Then four test processes of maximum noise amplitude detection, noise peak frequency detection, non-touch detection and touch detection of a charging power source are conducted. Discrimination to a standard configuration charger is achieved. According to the standard configuration charger discriminated method for the capacitive touch screen, a configuration charger which is suitable for being used by a present electronic product can be chosen from abundant of chargers, charging is conducted through the chosen standard configuration charger, the fact that the capacitive touch screen is free of being affected by charger common mode interference is guaranteed, and therefore working properties of the capacitive touch screen are guaranteed. The standard configuration charger discriminated method for the capacitive touch screen is simple in operation, high in reliability, good in comprehensiveness, capable of widely being applied in industry test processes of electronic products, such as an intelligent mobile phone or a tablet personal computer, with the capacitive touch screen, and high in practicability.
Description
Technical field
The invention belongs to the electronic product technical field of measurement and test, specifically, relate to a kind of method for the standard configuration charger that capacitive touch screen was suitable for is selected, differentiated.
Background technology
Smart-Its is the new ambit that RECENT DEVELOPMENTS is got up, effect and the status also day by day raising of smart electronics product in Modern Industry Products.At present, in the design of the smart electronics products such as mobile phone and panel computer, touch-screen has become requisite building block, and day by day becomes one of means that improve added value in such product design.
In present smart electronics product (such as smart mobile phone, panel computer etc.) design, mostly adopt capacitive touch screen that human-computer interaction interface is provided, receive user's operational order.The smart electronics product of this capacitor formula touch-screen generally all can be equipped with the standard configuration charger that is fit to the selected capacitive touch screen of this product when shipment.
Charger in the market, type is more numerous and diverse, when the user charges at the smart electronics product of giving capacitor formula touch-screen, when finding to connect the charger of some type sometimes, capacitive touch screen occurs and touch insensitive, the phenomenons such as button is inaccurate, the key that daps, and after having changed other chargers, these phenomenons may just disappear.These problems that the user runs into come from charger to the interference of capacitive touch screen module, and therefore, the charger that How to choose is suitable to guarantee the performance of capacitive touch screen on electronic product, just seems particularly crucial.
Summary of the invention
The object of the present invention is to provide a kind of standard configuration charger method of discrimination of capacitive touch screen, use the method can filter out for different capacitive touch screens the standard configuration charger that is fit to its use, thereby guarantee the performance of capacitive touch screen.
For solving the problems of the technologies described above, the present invention proposes following two kinds of solutions:
A kind of standard configuration charger method of discrimination of capacitive touch screen, described capacitive touch screen are assemblied on an electronic product, described electronic product connecting charger is charged, and carry out following test process:
Whether the out-put supply line of process 1, measurement charger detects the maximum noise amplitude of charge power supply lower than setting value; If lower than setting value, judge that current charger is the standard configuration charger; Otherwise, the test of implementation 2;
Process 2, measure the out-put supply line of charger, whether the noise peak frequency that detects charge power supply is near the sweep frequency of capacitive touch screen; If the noise peak frequency of charge power supply near the sweep frequency of capacitive touch screen, judges directly that current charger is unavailable; Otherwise, carry out the follow-up test process;
Process 3, in the situation that do not touch capacitive touch screen, whether extremely observe capacitive touch screen work; If abnormal, judge directly that current charger is unavailable; Otherwise, carry out the follow-up test process;
Process 4, capacitive touch screen is carried out touch operation, whether normally observe capacitive touch screen work; If normal, judge that current charger is the standard configuration charger.
Preferably, the preferred value in the scope of 3mV ~ 5mV of described setting value.
Further, in the test of described process 2, if deviation between the sweep frequency of the noise peak frequency of charge power supply and capacitive touch screen detected in 10KHz, think that the noise peak frequency of charge power supply near the sweep frequency of capacitive touch screen, judges that current charger is unavailable; If the deviation between the sweep frequency of the noise peak frequency of charge power supply and capacitive touch screen greater than 10KHz, thinks that the noise peak frequency of charge power supply is away from the sweep frequency of capacitive touch screen.
Further again, in the test of described process 3, the situation of key if dapping appears in capacitive touch screen is thought the capacitive touch screen operation irregularity, judges that current charger is unavailable.
Further, in the test of described process 4, suspending successively touches and touches altogether two test processs, if in described two test processs, capacitive touch screen is all working properly, judges that current charger is the standard configuration charger.
Further, in the process of carrying out the suspension touching test, the key or do not respond the situation of button if dapping appears in capacitive touch screen, and in the common ground touching test process of further carrying out, working properly or the performance improvement of capacitive touch screen judges that there is differential mode interference in charger; If in the process of carrying out the suspension touching test, capacitive touch screen occur dapping key or do not respond the situation of button, and in the common ground touching test process of further carrying out, the performance of capacitive touch screen is not improved, think that there is common mode interference in charger, judge that current charger is unavailable.
Preferably, in the test of described process 4, if judge that there is differential mode interference in charger, can set up the filtering circuit for filtering differential mode interference signal in electronic product, and then current charger is re-started test, if passed through above-mentioned four test processs, can be with current charger as the standard configuration charger.
Another solution proposed by the invention is:
A kind of standard configuration charger method of discrimination of capacitive touch screen, described capacitive touch screen are assemblied on an electronic product, described electronic product connecting charger is charged, and carry out following test process:
Process 1, in the situation that do not touch capacitive touch screen, whether extremely observe capacitive touch screen work; If abnormal, judge directly that current charger is unavailable; Otherwise, carry out the follow-up test process;
Process 2, capacitive touch screen is carried out touch operation, whether normally observe capacitive touch screen work; If normal, carry out the follow-up test process;
Whether the out-put supply line of process 3, measurement charger detects the maximum noise amplitude of charge power supply lower than setting value; If lower than setting value, judge that current charger is the standard configuration charger; Otherwise, the test of implementation 4;
Process 4, measure the out-put supply line of charger, whether the noise peak frequency that detects charge power supply is near the sweep frequency of capacitive touch screen; If the noise peak frequency of charge power supply near the sweep frequency of capacitive touch screen, judges directly that current charger is unavailable; Otherwise, judge that current charger is the standard configuration charger.
Further, in the test of described process 2, suspending successively touches and touches altogether two test processs, if capacitive touch screen is all working properly in described two test processs, and the test of implementation 3; If in the process of carrying out the suspension touching test, capacitive touch screen occur dapping key or do not respond the situation of button, and in the common ground touching test process of further carrying out, the working properly or performance improvement of capacitive touch screen judges that there is differential mode interference in charger; If in the process of carrying out the suspension touching test, capacitive touch screen occur dapping key or do not respond the situation of button, and in the common ground touching test process of further carrying out, the performance of capacitive touch screen is not improved, think that there is common mode interference in charger, judge that current charger is unavailable.
Further again, in the test of described process 2, if judge that there is differential mode interference in charger, can set up the filtering circuit for filtering differential mode interference signal in electronic product, and then current charger is re-started test, if passed through above-mentioned four test processs, can be with current charger as the standard configuration charger.
Further, in the test of described process 4, if deviation between the sweep frequency of the noise peak frequency of charge power supply and capacitive touch screen detected in 10KHz, think that the noise peak frequency of charge power supply near the sweep frequency of capacitive touch screen, judges that current charger is unavailable; If the deviation between the sweep frequency of the noise peak frequency of charge power supply and capacitive touch screen greater than 10KHz, thinks that the noise peak frequency of charge power supply away from the sweep frequency of capacitive touch screen, judges that current charger is the standard configuration charger.
Compared with prior art, advantage of the present invention and good effect are: adopt the standard configuration charger method of discrimination of capacitive touch screen of the present invention can pick out quickly and accurately the standard configuration charger that is fit to current capacitive touch screen use in the eurypalynous charger of crowd, the standard configuration charger that utilization filters out charges, can guarantee that capacitive touch screen can not be subject to the impact of charger common mode interference, thereby guarantee the serviceability of capacitive touch screen.This standard configuration charger recognition methods is simple to operate, reliability is high, comprehensive good, can be widely used in the industrial test process with electronic products such as the smart mobile phone of capacitive touch screen or panel computers, have higher practicality.
After reading by reference to the accompanying drawings the detailed description of embodiment of the present invention, it is clearer that the other features and advantages of the invention will become.
Description of drawings
Fig. 1 is the signal transmission loop schematic diagram by the differential mode interference of charger generation;
Fig. 2 is the signal transmission loop schematic diagram by the common mode interference of charger generation;
Fig. 3 is the test flow chart of a kind of embodiment of the standard configuration charger method of discrimination of capacitive touch screen proposed by the invention;
Fig. 4 is the test flow chart of another embodiment of the standard configuration charger method of discrimination of capacitive touch screen proposed by the invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
When using charger that electronic product is charged, charger can produce two kinds of interference: differential mode interference and common mode interference.Wherein, differential mode interference is exactly the power supply ripple that we often say, its undesired signal is to transmit in the loop of signal source and load formation, and is shown in Figure 1; And the signal circuit of common mode interference is relative to the earth, and undesired signal is returned via ground wire from signal source, and is shown in Figure 2, and the electric capacity in Fig. 2 represents stray capacitance.
Generally, differential mode interference can be by the in addition filtering of conventional filtering method, such as set up the filtering device such as electric capacity on circuit board; And therefore common mode interference seldom is mentioned owing to can not having influence on consumer commonly used.
Yet for capacitive touch screen, its signal circuit is actually with respect to the reference the earth, and just in time the signal circuit with common mode interference is identical, and therefore, common mode interference is easy to the capacitive touch screen module is exerted an influence.Affect the user for fear of common mode interference and normally use capacitive touch screen, need to noted aspect the design of light source of charger and selection.
Because charger in the market is of a great variety, some chargers can be with stronger common mode interference noise, if the sweep frequency of the frequency of interference noise and capacitive touch screen is more approaching, probably can have influence on the normal performance of capacitive touch screen, cause the touch-screen false triggering or operate the problem generations such as inaccurate.Therefore, how to select to be fit to the charger of its use with the electronic product of capacitive touch screen, just seem particularly important, only have to be the satisfactory standard configuration charger of electronic product configuration, just can guarantee the normal working performance of capacitive touch screen.
Based on this, the present invention proposes two kinds and be that capacitive touch screen selects the methods of standard configuration charger, exert an influence with the common mode interference of the avoiding charger performance to capacitive touch screen.
The below is take smart mobile phone that capacitive touch screen is installed as example, how elaborates by two specific embodiments and selects for the capacitive touch screen of installing on smart mobile phone the standard configuration charger that it is fit to.
embodiment one, the present embodiment is fit in order to pick out exactly the standard configuration charger that current phone is used in numerous chargers, to avoid charger connecting mobile phone, during for cell-phone charging, occur abnormal because the intrinsic common mode interference of charger self causes the capacitive touch screen on mobile phone, thereby the situation that has influence on the capacitive touch screen performance occurs, the present embodiment is mainly from four aspects, by observing working condition that capacitive touch screen shows and noise amplitude and the crest frequency of the charge power supply of charger output detected under the cell-phone charging state, whether applicablely to the capacitive touch screen on mobile phone comprehensively judge thus the charger that is currently connected on mobile phone, and then be that described mobile phone is picked out the standard configuration charger that is fit to its use, as the complete sale of the accessory of described mobile phone or use, in the situation that satisfy the cell-phone charging requirement, guarantee that the capacitive touch screen on mobile phone can normally use under the cell-phone charging state.
The standard configuration charger method of discrimination of the capacitive touch screen that the present embodiment proposes can be picked out the charger that does not have common mode interference rapidly in numerous chargers.For the charger that does not have common mode interference, can be directly with it as the standard configuration charger, complete the differentiation process to charger, in conjunction with shown in Figure 3.
At first, select a charger to be connected on smart mobile phone, and charge for smart mobile phone; Then, carry out following concrete test process:
Process 1, measure the out-put supply line of charger with spectrum analyzer, whether detect the maximum noise amplitude of charge power supply lower than setting value; In the present embodiment, described setting value is generally empirical value, preferably value in the scope of 3mV ~ 5mV.Describe as an example of setting value=3mV example, if the maximum noise amplitude that charge power supply detected lower than 3mV, thinks that there is not common mode interference in current charger, can directly as the standard configuration charger of this smart mobile phone, complete test process; Be greater than or equal to 3mV if the maximum noise amplitude of charge power supply detected, think that there is common mode interference in current charger, but whether its common mode interference can impact the performance of the capacitive touch screen on mobile phone, need to do further detection, namely carry out follow-up test process and judged.
Process 2, measure the out-put supply line of charger with spectrum analyzer, whether the noise peak frequency that detects charge power supply is near the sweep frequency of capacitive touch screen.The sweep frequency of capacitive touch screen is generally fixed frequency, if the sweep frequency of the noise peak frequency of charge power supply and capacitive touch screen is more approaching, be that deviation is less, current charger is certain to the capacitive touch screen on this smart mobile phone is exerted an influence, therefore, judge that current charger is unavailable.If the noise peak frequency of charge power supply is away from the sweep frequency of capacitive touch screen, namely deviation is larger, needs to do further detection, namely carries out follow-up test process.
In the present embodiment, preferably the critical point with described deviation designs at 10KHz, namely, if deviation between the sweep frequency of the noise peak frequency of charge power supply and capacitive touch screen detected by spectrum analyzer in 10KHz, think that the noise peak frequency of charge power supply near the sweep frequency of capacitive touch screen, judges that directly current charger is unavailable; If the deviation between the sweep frequency of the noise peak frequency of charge power supply and capacitive touch screen is greater than 10KHz, think that the noise peak frequency of charge power supply is away from the sweep frequency of capacitive touch screen, need to do further detection this moment, whether can be used as the standard configuration charger of this smart mobile phone to judge current charger.
Process 3, in the situation that do not touch capacitive touch screen, whether extremely at first observe capacitive touch screen work, for example whether have the situation of the key that daps to occur; If have, think the capacitive touch screen operation irregularity, namely the common mode interference of charger can exert an influence to the performance of capacitive touch screen, judges that the charger that is currently connected on mobile phone is unavailable, need to reselect a charger and test.If capacitive touch screen is working properly, namely without any Novel presentation, whether the current charger of temporary transient judgement can be used, but be the standard configuration charger, needs to do further checking, just can conclude.
Process 4, capacitive touch screen is carried out touch operation, whether normally observe capacitive touch screen work.In the present embodiment, in order to improve the accuracy of detection, decision design suspend to touch and touch altogether two testing processes, if in two touch the process that detects, capacitive touch screen is all working properly, namely without any Novel presentation, can judge that current charger can use, the standard configuration charger that can be used as this smart mobile phone uses.If touching at any one, capacitive touch screen occurs in the process that detects extremely, for example have when dapping key or not responding the situation generation of button, two kinds of processing modes can be arranged: a kind of is to judge that directly current charger is unavailable, selects in addition a charger to re-start test; Another kind is to do further judgement to the existing interference type of charger, is that common mode interference by charger causes to determine abnormal conditions that capacitive touch screen is showed, or caused by the differential mode interference of charger.
Specifically, in capacitive touch screen is carried out the process of touching test, at first carry out the suspension touching test, being about to smart mobile phone is placed on the insulation desktop, only singly refer to touch capacitive touch screen with one hand, key or the situation that do not respond button occur if dapping appears in capacitive touch screen, and in the common ground touching test process of further carrying out, the performance of capacitive touch screen has had obvious improvement or working properly, and what can judge current charger existence is differential mode interference.At this moment, can adopt filtering circuits such as setting up large electric capacity on the internal circuit board of smart mobile phone, the differential mode interference signal that is produced to filter out charger; And then current charger is re-executed above-mentioned four test processs, if passed through smoothly four above-mentioned test processs, still the standard configuration charger of current charger as this smart mobile phone can be used.If in the process of carrying out the suspension touching test, capacitive touch screen occurred dapping key or do not respond the situation of button, and in the common ground touching test process of further carrying out, the performance of capacitive touch screen is not improved, what can think that current charger exists is common mode interference, judge that current charger is unavailable, need to change charger and re-start test.
In the present embodiment, the operating process of described touching test altogether is: at first with a frame that holds capacitive touch screen, so that capacitive touch screen ground connection; Then, remove to touch capacitive touch screen with an other hand, realize the common ground touching test to capacitive touch screen.
The standard configuration charger method of discrimination of the present embodiment, for the charger that there is no common mode interference, can only detect the standard configuration charger that can filter out smart mobile phone by a step of process 1, complete test process, the method is applicable in alternative charger, great majority are the situations that there is no the charger of common mode interference, to accelerating screening process.
It is to be noted: above-mentioned process 1 and the execution sequence of process 2 can exchange, it is the test of first implementation 2, go out disabled charger with rapid screening, and then the test of implementation 1, to filter out the maximum noise amplitude less than the standard configuration charger of setting value, the present embodiment does not specifically limit this.
Embodiment two, and the standard configuration charger method of discrimination of the capacitive touch screen that the present embodiment proposes can be picked out disabled charger concerning current smart mobile phone simply, rapidly from numerous chargers, to accelerate selection process, in conjunction with shown in Figure 4.
At first, select a charger to be connected on smart mobile phone, and charge for smart mobile phone; Then, carry out following concrete test process:
Whether process 1, do not touch capacitive touch screen, whether the work of directly observing capacitive touch screen is normal, for example have the situation of the key that daps to occur; If have, think the capacitive touch screen operation irregularity, there is common mode interference in current charger, and its common mode interference is larger to the performance impact of capacitive touch screen, can directly judge that the charger that is currently connected on smart mobile phone is unavailable this moment, need to reselect a charger and test.If capacitive touch screen is working properly, namely without any Novel presentation, can judge temporarily that current charger can use, but, whether can be used as the standard configuration charger of smart mobile phone, need to do further checking, namely carry out follow-up test process, just can conclude.
Process 2, capacitive touch screen is carried out touch operation, whether the work of observing capacitive touch screen is normal.In the present embodiment, in order to improve the accuracy of detection, can adopting equally suspends touches and touches altogether two testing processes.Specifically, at first carry out the suspension touching test, smart mobile phone is placed on the insulation desktop, only singly refer to touch capacitive touch screen with one hand, if the touch-screen reaction is normal, further carry out touching test altogether, namely with a frame that holds capacitive touch screen, so that capacitive touch screen ground connection; Then, remove to touch capacitive touch screen with an other hand, if touch-screen reaction is normal, can think temporarily that current charger can use, carry out the follow-up test process; If the capacitive touch screen operation irregularity for example has the situation that daps key or do not respond button to occur, judge that current charger is unavailable, need to reselect a charger and test.
If in the test process that touches that capacitive touch screen is suspended, the situation that capacitive touch screen key occurs dapping or do not respond button occurs, and in the common ground touching test process of further carrying out, the performance of capacitive touch screen has had obvious improvement or working properly, can judge that there is differential mode interference in current charger.At this moment, can adopt filtering circuits such as setting up large electric capacity on the internal circuit board of smart mobile phone, the differential mode interference signal that is produced to filter out charger; And then current charger is re-executed the test of process 1, process 2, if passed through smoothly two above-mentioned test processs, can enter into follow-up test process.Certainly, also can directly current charger be judged to be unavailablely, reselect a charger and test.If in the process of carrying out the suspension touching test, capacitive touch screen occurred dapping key or do not respond the situation of button, and in the common ground touching test process of further carrying out, the performance of capacitive touch screen does not make moderate progress, can think that there is common mode interference in current charger, judge that current charger is unavailable, need to change charger and re-start test.
Process 3, utilize spectrum analyzer to measure the out-put supply line of charger, whether detect the maximum noise amplitude of charge power supply lower than setting value, described setting value is value in the scope of 3mV ~ 5mV preferably, is preferably set to 3mV; If the maximum noise amplitude of charge power supply detected lower than setting value, think that there is not common mode interference in current charger, can directly as the standard configuration charger of this smart mobile phone, complete test process; Be greater than or equal to setting value if the maximum noise amplitude of charge power supply detected, need to do further detection, namely carry out follow-up test process.
Process 4, utilize spectrum analyzer to measure the out-put supply line of charger, whether the noise peak frequency that detects charge power supply is near the sweep frequency of capacitive touch screen; If approach, can judge directly that there is common mode interference certainly in current charger, unavailable to this smart mobile phone; Otherwise, can judge that current charger can be used as the standard configuration charger use of this smart mobile phone.
In the present embodiment, the same frequency departure scope of selecting 10KHz is as noise peak frequency and capacitive touch screen sweep frequency approaching Rule of judgment whether, namely, if deviation between the sweep frequency of the noise peak frequency of charge power supply and capacitive touch screen detected by spectrum analyzer in 10KHz, think that the noise peak frequency of charge power supply near the sweep frequency of capacitive touch screen, can judge directly that current charger is unavailable; If the deviation between the sweep frequency of the noise peak frequency of charge power supply and capacitive touch screen is greater than 10KHz, think that the noise peak frequency of charge power supply away from the sweep frequency of capacitive touch screen, judges that current charger is the standard configuration charger of this smart mobile phone.
The standard configuration charger method of discrimination of the present embodiment, for the charger that has serious common mode interference, can only observe testing process by a step of process 1, can filter out intuitively, fast the charger that is not suitable for being applied on this smart mobile phone, and then end is directly changed next charger and is tested the test process of current charger.The method is applicable in alternative charger, and great majority are the situations that have the charger of serious common mode interference, to accelerate the rejecting process.
In like manner, the process 3 of the present embodiment and the execution sequence of process 4 also can exchange, test that namely can first implementation 4, go out disabled charger with rapid screening, and then the test of implementation 3, to filter out the maximum noise amplitude less than the standard configuration charger of setting value, the present embodiment does not specifically limit this.
The standard configuration charger method of discrimination of capacitive touch screen of the present invention, incremental, orderliness is clear, reliability is high, essence combine with phenomenon, comprehensive good, step is screened the standard configuration charger in this way, can fully guarantee the performance of capacitive touch screen.
Certainly, above-mentioned standard configuration charger method of discrimination proposed by the invention is equally applicable to except mobile phone, other need to configure on the electronic product of capacitive touch screen, filter out the standard configuration charger that is fit to its use for this electronic product, and the present embodiment does not specifically limit this.
Should be noted that; the above is only a kind of preferred implementation of the present invention, for those skilled in the art, and 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 (10)
1. the standard configuration charger method of discrimination of a capacitive touch screen, described capacitive touch screen is assemblied on an electronic product, it is characterized in that: described electronic product connecting charger is charged, and carry out following test process:
Whether the out-put supply line of process 1, measurement charger detects the maximum noise amplitude of charge power supply lower than setting value; If lower than setting value, judge that current charger is the standard configuration charger; Otherwise, the test of implementation 2;
Process 2, measure the out-put supply line of charger, whether the noise peak frequency that detects charge power supply is near the sweep frequency of capacitive touch screen; If the noise peak frequency of charge power supply near the sweep frequency of capacitive touch screen, judges directly that current charger is unavailable; Otherwise, carry out the follow-up test process;
Process 3, in the situation that do not touch capacitive touch screen, whether extremely observe capacitive touch screen work; If abnormal, judge directly that current charger is unavailable; Otherwise, carry out the follow-up test process;
Process 4, capacitive touch screen is carried out touch operation, whether normally observe capacitive touch screen work; If normal, judge that current charger is the standard configuration charger.
2. the standard configuration charger method of discrimination of capacitive touch screen according to claim 1, it is characterized in that: described setting value is value in the scope of 3mV ~ 5mV.
3. the standard configuration charger method of discrimination of capacitive touch screen according to claim 1, it is characterized in that: in the test of described process 2, if deviation between the sweep frequency of the noise peak frequency of charge power supply and capacitive touch screen detected in 10KHz, think that the noise peak frequency of charge power supply near the sweep frequency of capacitive touch screen, judges that current charger is unavailable; If the deviation between the sweep frequency of the noise peak frequency of charge power supply and capacitive touch screen greater than 10KHz, thinks that the noise peak frequency of charge power supply is away from the sweep frequency of capacitive touch screen.
4. the standard configuration charger method of discrimination of capacitive touch screen according to claim 1, it is characterized in that: in the test of described process 3, the situation of key if dapping appears in capacitive touch screen is thought the capacitive touch screen operation irregularity, judges that current charger is unavailable.
5. the standard configuration charger method of discrimination of the described capacitive touch screen of any one according to claim 1 to 4, it is characterized in that: in the test of described process 4, suspend successively and touch and touch altogether two test processs, if in described two test processs, capacitive touch screen is all working properly, judges that current charger is the standard configuration charger.
6. the standard configuration charger method of discrimination of capacitive touch screen according to claim 5, it is characterized in that: in the process of carrying out the suspension touching test, the key or do not respond the situation of button if dapping appears in capacitive touch screen, and in the common ground touching test process of further carrying out, working properly or the performance improvement of capacitive touch screen judges that there is differential mode interference in charger; If in the process of carrying out the suspension touching test, capacitive touch screen occur dapping key or do not respond the situation of button, and in the common ground touching test process of further carrying out, the performance of capacitive touch screen is not improved, think that there is common mode interference in charger, judge that current charger is unavailable.
7. the standard configuration charger method of discrimination of a capacitive touch screen, described capacitive touch screen is assemblied on an electronic product, it is characterized in that: described electronic product connecting charger is charged, and carry out following test process:
Process 1, in the situation that do not touch capacitive touch screen, whether extremely observe capacitive touch screen work; If abnormal, judge directly that current charger is unavailable; Otherwise, carry out the follow-up test process;
Process 2, capacitive touch screen is carried out touch operation, whether normally observe capacitive touch screen work; If normal, carry out the follow-up test process;
Whether the out-put supply line of process 3, measurement charger detects the maximum noise amplitude of charge power supply lower than setting value; If lower than setting value, judge that current charger is the standard configuration charger; Otherwise, the test of implementation 4;
Process 4, measure the out-put supply line of charger, whether the noise peak frequency that detects charge power supply is near the sweep frequency of capacitive touch screen; If the noise peak frequency of charge power supply near the sweep frequency of capacitive touch screen, judges directly that current charger is unavailable; Otherwise, judge that current charger is the standard configuration charger.
8. the standard configuration charger method of discrimination of capacitive touch screen according to claim 7, it is characterized in that: in the test of described process 2, suspend successively and touch and touch altogether two test processs, if capacitive touch screen is all working properly in described two test processs, the test of implementation 3; If in the process of carrying out the suspension touching test, capacitive touch screen occur dapping key or do not respond the situation of button, and in the common ground touching test process of further carrying out, the working properly or performance improvement of capacitive touch screen judges that there is differential mode interference in charger; If in the process of carrying out the suspension touching test, capacitive touch screen occur dapping key or do not respond the situation of button, and in the common ground touching test process of further carrying out, the performance of capacitive touch screen is not improved, think that there is common mode interference in charger, judge that current charger is unavailable.
9. the standard configuration charger method of discrimination of capacitive touch screen according to claim 8, it is characterized in that: in the test of described process 2, if judge that there is differential mode interference in charger, set up the filtering circuit for filtering differential mode interference signal in electronic product, then current charger is re-started test.
10. the standard configuration charger method of discrimination of the described capacitive touch screen of any one according to claim 7 to 9, it is characterized in that: in the test of described process 4, if deviation between the sweep frequency of the noise peak frequency of charge power supply and capacitive touch screen detected in 10KHz, think that the noise peak frequency of charge power supply near the sweep frequency of capacitive touch screen, judges that current charger is unavailable; If the deviation between the sweep frequency of the noise peak frequency of charge power supply and capacitive touch screen greater than 10KHz, thinks that the noise peak frequency of charge power supply away from the sweep frequency of capacitive touch screen, judges that current charger is the standard configuration charger.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510309725.3A CN105093007B (en) | 2013-01-22 | 2013-01-22 | The standard configuration charger method of discrimination of capacitive touch screen |
| CN201310022988.7A CN103091586B (en) | 2013-01-22 | 2013-01-22 | Standard configuration charger discriminated method for capacitive touch screen |
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| CN201310022988.7A CN103091586B (en) | 2013-01-22 | 2013-01-22 | Standard configuration charger discriminated method for capacitive touch screen |
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Cited By (6)
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| CN103645400A (en) * | 2013-12-10 | 2014-03-19 | Tcl通讯（宁波）有限公司 | Charger detection system and charging detection method thereof |
| CN107132949A (en) * | 2017-04-28 | 2017-09-05 | 北京小米移动软件有限公司 | anti-interference method, device, terminal and storage medium |
| CN107526471A (en) * | 2017-08-28 | 2017-12-29 | 北京小米移动软件有限公司 | Touch-screen control method, device and storage medium |
| US10908735B2 (en) | 2016-09-21 | 2021-02-02 | Huawei Technologies Co., Ltd. | Anti-interference method and apparatus for touch panel |
| US11126301B2 (en) | 2016-05-26 | 2021-09-21 | Honor Device Co., Ltd. | Power adapter control method and control apparatus |
| CN114270708A (en) * | 2019-10-08 | 2022-04-01 | 代傲阿扣基金两合公司 | Method for setting sampling frequency of capacitive touch switch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103645400A (en) * | 2013-12-10 | 2014-03-19 | Tcl通讯（宁波）有限公司 | Charger detection system and charging detection method thereof |
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| US11126301B2 (en) | 2016-05-26 | 2021-09-21 | Honor Device Co., Ltd. | Power adapter control method and control apparatus |
| US10908735B2 (en) | 2016-09-21 | 2021-02-02 | Huawei Technologies Co., Ltd. | Anti-interference method and apparatus for touch panel |
| CN107132949A (en) * | 2017-04-28 | 2017-09-05 | 北京小米移动软件有限公司 | anti-interference method, device, terminal and storage medium |
| CN107526471A (en) * | 2017-08-28 | 2017-12-29 | 北京小米移动软件有限公司 | Touch-screen control method, device and storage medium |
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| CN114270708A (en) * | 2019-10-08 | 2022-04-01 | 代傲阿扣基金两合公司 | Method for setting sampling frequency of capacitive touch switch |
Also Published As
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| CN105093007B (en) | 2017-10-13 |
| CN103091586B (en) | 2015-07-01 |
| CN105093007A (en) | 2015-11-25 |
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