CN106451697A - Mobile terminal and common mode interference resistance method - Google Patents
Mobile terminal and common mode interference resistance method Download PDFInfo
- Publication number
- CN106451697A CN106451697A CN201610676714.3A CN201610676714A CN106451697A CN 106451697 A CN106451697 A CN 106451697A CN 201610676714 A CN201610676714 A CN 201610676714A CN 106451697 A CN106451697 A CN 106451697A
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- mobile terminal
- metallic conductor
- shunt capacitance
- charging inlet
- common mode
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000004020 conductor Substances 0.000 claims abstract description 61
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
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- H02J7/027—
Landscapes
- Telephone Set Structure (AREA)
Abstract
The invention discloses a mobile terminal and a common mode interference resistance method. The mobile terminal comprises a charging interface which is arranged at one end of the mobile terminal; a first metal conductor which is arranged at one side of the mobile terminal; and a first bypass capacitor which is connected between the charging interface and the first metal conductor. With application of the method, the common mode interference signals can be effectively filtered so that the structure is simple and the reliability of equipment can be enhanced.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of mobile terminal and method resistant to common code interference.
Background technology
The capacitance touch screen being widely used in portable set is highly susceptible to the electromagnetic interference from charger, disturbs signal
It is capacitively coupled to touch panel device, cause touch hop, the phenomenon such as inaccurate, affect user's normal operating.
Mobile terminal charger generally has alternating current (Alternating Current, AC) power firestreak and zero line input,
But do not connect ground wire.Do not have DC to connect between power supply input and charger secondary coil, but this still can be by switch electricity
Source isolating transformer produces Capacitance Coupled.This common mode disturbances refers to the applied voltage relative to the earth for the equipment.Below figure 1 institute
Show, N1 be mobile terminal 1 systematically relative to the common mode interference signal between the earth.When finger touches mobile terminal 1
Touch-screen when, human body formed electric capacity Cbody.At this moment N1 interference signal is formed the loop of the earth by staff, thus affects shifting
The transmitting terminal (TX) of dynamic terminal 1 arrives the charge and discharge process between receiving terminal (RX), causes touch-screen hop, and contact is inaccurate waits now
As.
Currently for charger interference, it is common that by adjusting the operating frequency of mobile terminal, avoid interference frequency, but
For different chargers, interference signal frequency composition is extremely complex, and the whole frequency range in mobile terminal work has interference letter
Number, thus cannot effectively avoid interference.
Content of the invention
Embodiments provide a kind of mobile terminal and method resistant to common code interference, can effective filtering common mode
Interference signal, simple in construction, the reliability of lifting means.
The present invention provides a kind of mobile terminal, including：Charging inlet, is positioned at mobile terminal one end；First metallic conductor,
It is arranged on the side of mobile terminal；First shunt capacitance, the first shunt capacitance is connected to charging inlet and the first metallic conductor
Between.
Wherein, the first metallic conductor is strip.
Wherein, the first shunt capacitance connects mobile terminal systematically by charging inlet.
Wherein, mobile terminal also includes the second metallic conductor and the second shunt capacitance, and the second metallic conductor is by the
Two shunt capacitances are connected with charging inlet.
Wherein, the second metallic conductor is symmetricly set on the opposite side relative with the first metallic conductor.
Wherein, the second metallic conductor and the first metallic conductor size shape are identical.
Wherein, the first shunt capacitance and the second shunt capacitance are arranged on inside mobile terminal.
Wherein, the first shunt capacitance and the second shunt capacitance capacity are equal.
The present invention also provides a kind of method resistant to common code interference, and mobile terminal includes the charging being positioned at mobile terminal one end
Mouthful, it is arranged on the first metallic conductor of the side of mobile terminal, be connected between charging inlet and the first metallic conductor
First shunt capacitance, method includes：First metallic conductor and human contact；Mobile terminal systematically, charging inlet, first
Shunt capacitance, the first metallic conductor, human body and the earth form bleed-off circuit with common mode interference signal of releasing.
Wherein, mobile terminal also includes the second metallic conductor and the second shunt capacitance, respectively with the first metallic conductor
Being symmetrical arranged with the first shunt capacitance, method also includes：Second metallic conductor and human contact；Mobile terminal systematically,
Charging inlet, the second shunt capacitance, the second metallic conductor, human body and the earth form bleed-off circuit with common mode disturbances letter of releasing
Number.
By such scheme, the invention has the beneficial effects as follows：The mobile terminal of the present invention includes being positioned at mobile terminal one end
Charging inlet, be arranged on the first metallic conductor of the side of mobile terminal, be connected to charging inlet and the first metallic conduction
The first shunt capacitance between body, by the first metallic conductor and human contact, mobile terminal systematically, charging inlet,
First shunt capacitance, the first metallic conductor, human body and the earth form bleed-off circuit with common mode interference signal of releasing, Neng Gouyou
The filtering common mode interference signal of effect, simple in construction, the reliability of lifting means.
Brief description
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, required in embodiment being described below make
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for
From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained other according to these accompanying drawings
Accompanying drawing.Wherein：
Fig. 1 is the common mode disturbances schematic diagram of the mobile terminal of prior art；
Fig. 2 is the structural representation of the mobile terminal of the embodiment of the present invention；
Fig. 3 is the method schematic diagram of the filtering common mode interference of the mobile terminal of the embodiment of the present invention；
Fig. 4 is the schematic flow sheet of the method resistant to common code interference of first embodiment of the invention；
Fig. 5 is the schematic flow sheet of the method resistant to common code interference of second embodiment of the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention wholely, rather than whole embodiment.Based on this
Embodiment in invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making performing creative labour
Embodiment, broadly falls into the scope of protection of the invention.
Fig. 1 is the structural representation of the mobile terminal of the embodiment of the present invention.As it is shown in figure 1, mobile terminal 10 includes：Charging
Interface the 11st, the first metallic conductor 12 and the first shunt capacitance 13.Charging inlet 11 is positioned at mobile terminal 10 one end.First gold medal
Belong to electric conductor 12 and be arranged on the side of mobile terminal 10.First shunt capacitance 13 is connected to charging inlet 11 and the first metallic conduction
Between body 12.
In embodiments of the present invention, the first metallic conductor 12 is strip.First shunt capacitance 13 passes through charging inlet
11 connect mobile terminal 10 systematically.
Seeing Fig. 3, when user's hand-held mobile terminal 10 operates, palm and finger can touch and be positioned at mobile terminal 10 1
First metallic conductor 12 of side.Owing to human body is equivalent to connect the earth, receiving terminal RX will pass through the first shunt capacitance the 13rd, human body
Formed and systematically arrive the earth bleed-off circuit.Being equivalent to when hand-held mobile terminal 10, common mode interference signal can be by the first bypass
The electric capacity C that electric capacity 13 and human body are formedbodyIt is released to the earth, as represented by the arrows in the dashed line in figure 2.So interference signal be equivalent to by
Human body bypasses, and when the touch-screen of finger manipulation mobile terminal 10, charger interference signal will not have influence on mobile terminal again
The internal signal of 10.In embodiments of the present invention, it is also possible to the transmitting terminal TX being mobile terminal 10 will be by the first bypass electricity
Hold the 13rd, human body formation and systematically arrive the earth bleed-off circuit.
In embodiments of the present invention, mobile terminal 10 also includes the second metallic conductor 14 and the second shunt capacitance 15.The
Two metallic conductors 14 are connected with charging inlet 11 by the second shunt capacitance 15.Second metallic conductor 14 be symmetricly set on
The relative opposite side of first metallic conductor 12.Second metallic conductor 14 is identical with the first metallic conductor 12 size shape.
First shunt capacitance 13 and the second shunt capacitance 15 capacity are equal, are all disposed within the inside of mobile terminal 10.
When user's hand-held mobile terminal 10 operates, palm and finger can touch and be positioned at the second of mobile terminal 10 side
Metallic conductor 14.Owing to human body is equivalent to connect the earth, transmitting terminal TX will form system by the second shunt capacitance the 15th, human body
Ground is to the earth bleed-off circuit.Be equivalent to when hand-held mobile terminal 10, common mode interference signal can pass through the second shunt capacitance 15 and
The electric capacity C that human body is formedbodyIt is released to the earth.So interference signal is equivalent to be bypassed by human body, when finger manipulation moves
During the touch-screen of terminal 10, charger interference signal will not have influence on the internal signal of mobile terminal 10 again, therefore, it is possible to effectively
Filtering common mode disturbs signal, simple in construction, the reliability of lifting means.In embodiments of the present invention, it is also possible to be mobile terminal
The receiving terminal RX of 10 will be formed by the first shunt capacitance the 13rd, human body and systematically arrive the earth bleed-off circuit.
Fig. 4 is the schematic flow sheet of the method resistant to common code interference of the embodiment of the present invention.Mobile terminal includes being positioned at movement
The charging inlet of terminal side, is arranged on the first metallic conductor of the side of mobile terminal, is connected to charging inlet and first
The first shunt capacitance between metallic conductor.As shown in Figure 4, method resistant to common code interference includes：
Step S10：First metallic conductor and human contact.
Step S11：Mobile terminal systematically, charging inlet, the first shunt capacitance, the first metallic conductor, human body with
And the earth forms bleed-off circuit with common mode interference signal of releasing.
In embodiments of the present invention, human body is equivalent to an electric capacity, and common mode interference signal can pass through the first shunt capacitance and people
The electric capacity that body is formed is released to the earth, so that interference signal is equivalent to be bypassed by human body, when finger manipulation moves end
During the touch-screen held, charger interference signal will not have influence on the internal signal of mobile terminal again, can effectively do filtering common mode
Disturb signal, simple in construction, the reliability of lifting means.
In embodiments of the present invention, mobile terminal can also include the second metallic conductor and the second shunt capacitance, respectively
It is symmetrical arranged with the first metallic conductor and the first shunt capacitance.Seeing Fig. 5, method resistant to common code interference can also include：
Step S20：Second metallic conductor and human contact.
Step S21：Mobile terminal systematically, charging inlet, the second shunt capacitance, the second metallic conductor, human body with
And the earth forms bleed-off circuit with common mode interference signal of releasing.
Similarly, the electric capacity that common mode interference signal can be formed by the second shunt capacitance and human body is released to the earth, so
Making interference signal be equivalent to be bypassed by human body, when the touch-screen of finger manipulation mobile terminal, charger interference signal is not
The internal signal of mobile terminal can be had influence on again.
In embodiments of the present invention, above-mentioned two embodiments can be applied respectively, it is also possible to applies simultaneously, does not limits at this
System.
In sum, the mobile terminal of the present invention includes the charging inlet being positioned at mobile terminal one end, is arranged on mobile whole
First metallic conductor of the side of end, the first shunt capacitance being connected between charging inlet and the first metallic conductor, logical
Cross the first metallic conductor and human contact, mobile terminal systematically, charging inlet, the first shunt capacitance, the first metal lead
Electricity body, human body and the earth formation bleed-off circuit, with common mode interference signal of releasing, effectively can disturb signal, knot by filtering common mode
Structure is simple, the reliability of lifting means.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this
Equivalent structure or equivalence flow process that bright specification and accompanying drawing content are made convert, or are directly or indirectly used in other related skills
Art field, all in like manner includes in the scope of patent protection of the present invention.
Claims (10)
1. a mobile terminal, it is characterised in that described mobile terminal includes：
Charging inlet, is positioned at described mobile terminal one end；
First metallic conductor, is arranged on the side of described mobile terminal；
First shunt capacitance, described first shunt capacitance is connected between described charging inlet and described first metallic conductor.
2. mobile terminal according to claim 1, it is characterised in that described first metallic conductor is strip.
3. mobile terminal according to claim 1, it is characterised in that described first shunt capacitance passes through described charging inlet
Connect described mobile terminal systematically.
4. mobile terminal according to claim 1, it is characterised in that described mobile terminal also includes the second metallic conductor
With the second shunt capacitance, described second metallic conductor is connected with described charging inlet by described second shunt capacitance.
5. mobile terminal according to claim 4, it is characterised in that described second metallic conductor is symmetricly set on and institute
State the relative opposite side of the first metallic conductor.
6. mobile terminal according to claim 4, it is characterised in that described second metallic conductor and described first metal
Electric conductor size shape is identical.
7. mobile terminal according to claim 4, it is characterised in that described first shunt capacitance and described second bypass electricity
Hold and be arranged on inside described mobile terminal.
8. mobile terminal according to claim 4, it is characterised in that described first shunt capacitance and described second bypass electricity
Hold capacity equal.
9. a method resistant to common code interference, it is characterised in that mobile terminal includes the charging being positioned at described mobile terminal one end
Interface, is arranged on the first metallic conductor of the side of described mobile terminal, is connected to described charging inlet and described first gold medal
Belonging to the first shunt capacitance between electric conductor, described method includes：
Described first metallic conductor and human contact；
Described mobile terminal systematically, described charging inlet, described first shunt capacitance, described first metallic conductor, people
Body and the earth form bleed-off circuit with common mode interference signal of releasing.
10. method according to claim 9, it is characterised in that mobile terminal also includes the second metallic conductor and second
Shunt capacitance, is symmetrical arranged with described first metallic conductor and described first shunt capacitance respectively, and described method also includes：
Described second metallic conductor and human contact；
Described mobile terminal systematically, described charging inlet, described second shunt capacitance, described second metallic conductor, people
Body and the earth form bleed-off circuit with common mode interference signal of releasing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676714.3A CN106451697A (en) | 2016-08-16 | 2016-08-16 | Mobile terminal and common mode interference resistance method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676714.3A CN106451697A (en) | 2016-08-16 | 2016-08-16 | Mobile terminal and common mode interference resistance method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106451697A true CN106451697A (en) | 2017-02-22 |
Family
ID=58181473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610676714.3A Pending CN106451697A (en) | 2016-08-16 | 2016-08-16 | Mobile terminal and common mode interference resistance method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106451697A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010108884A (en) * | 2008-10-31 | 2010-05-13 | Nec Saitama Ltd | Capacitance type touch sensor and electronic equipment |
| CN203014885U (en) * | 2012-12-04 | 2013-06-19 | 深圳市志凌伟业技术有限公司 | Mobile phone touch screen system |
| CN203301179U (en) * | 2013-05-10 | 2013-11-20 | 深圳市邦华电子有限公司 | Anti-interference charger applied to capacitor touch screen |
| CN205385408U (en) * | 2015-12-25 | 2016-07-13 | 深圳市英威腾电气股份有限公司 | Capacitor filter device, converter major loop and converter |
| CN206294411U (en) * | 2016-12-24 | 2017-06-30 | 深圳市触想智能股份有限公司 | A kind of industrial all-in-one anti electrostatic grounding device |
-
2016
- 2016-08-16 CN CN201610676714.3A patent/CN106451697A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010108884A (en) * | 2008-10-31 | 2010-05-13 | Nec Saitama Ltd | Capacitance type touch sensor and electronic equipment |
| CN203014885U (en) * | 2012-12-04 | 2013-06-19 | 深圳市志凌伟业技术有限公司 | Mobile phone touch screen system |
| CN203301179U (en) * | 2013-05-10 | 2013-11-20 | 深圳市邦华电子有限公司 | Anti-interference charger applied to capacitor touch screen |
| CN205385408U (en) * | 2015-12-25 | 2016-07-13 | 深圳市英威腾电气股份有限公司 | Capacitor filter device, converter major loop and converter |
| CN206294411U (en) * | 2016-12-24 | 2017-06-30 | 深圳市触想智能股份有限公司 | A kind of industrial all-in-one anti electrostatic grounding device |
Non-Patent Citations (1)
| Title |
|---|
| 吴东梅等: "电容触摸屏的抗共模噪声性能测试", 《电子测量技术》 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20190409 |