CN205566290U - SIM card hot plug treatment circuit, printed circuit board , electronic equipment - Google Patents
SIM card hot plug treatment circuit, printed circuit board , electronic equipment Download PDFInfo
- Publication number
- CN205566290U CN205566290U CN201620146652.0U CN201620146652U CN205566290U CN 205566290 U CN205566290 U CN 205566290U CN 201620146652 U CN201620146652 U CN 201620146652U CN 205566290 U CN205566290 U CN 205566290U
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- Prior art keywords
- contact point
- sim card
- electronic equipment
- hot plug
- circuit board
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Abstract
The utility model relates to the field of communication, a SIM card hot plug treatment circuit, printed circuit board, electronic equipment is disclosed, this SIM card hot plug treatment circuit contains: ground connection contact point, interrupt contact point, resistance, clamp circuit unit and controller, the one end of suspending contact point and resistance is connected, and the other end of resistance is connected with a GPIO input pin of controller, the output connection of clamp circuit unit is in suspending the contact point, wherein, the controller detects the ground connection contact point and suspends the contact point and switches on or break off through the physics mode, goes up electricity or disconnected electric treatment to user id identification card's cassette respectively. The utility model discloses in, can solve the damage phenomenon of causing to electronic equipment and SIM card when carrying out the hot plug to the SIM card among the prior art effectively, avoiding system's operation of SIM card and electronic equipment, unusual and the cost is lower.
Description
Technical field
The utility model relates to the communications field, processes circuit, printing particularly to a kind of SIM card hot plug
Circuit board, electronic equipment.
Background technology
In recent years, along with development and the continuous progress in epoch of the communication technology, mobile phone has become for people
Requisite communication tool in daily life, this is because mobile phone carries convenient, use simple and square
Just, bring great convenience to the life of people.At present, the SIM (SIM being arranged in mobile phone
Being the abbreviation of Subscriber Identity Module, Chinese is interpreted as: client identification module, also referred to as
Subscriber identification card) may be used for identifying the identity of user.The most in the ordinary course of things, SIM is
Do not support heat operation, i.e. before taking out SIM or inserting SIM, be intended to first close electronics and set
Standby power supply, could extract SIM or insert, and otherwise SIM has the danger of damage.So
May result in user change SIM time, particularly to double card function electronic equipment change SIM
During card, it is necessary for first electronic equipment being carried out power-off, then installs, then power on, start, make to user
With bringing inconvenience, so supporting that the electronic equipment of the hot plug of SIM just arises at the historic moment.
The warm connection function of major part SIM cards of mobile phones is all the SIM by band detection pin the most on the market
Deck realizes.And some mobile phones, due to structure, the consideration that becomes present aspect, have selected without detection
The SIM card holder of pin, if at this time user carries out SIM warm swap, it is possible to cause SIM
Card and system operation exception.
Utility model content
The purpose of this utility model be to provide a kind of SIM card hot plug process circuit, printed circuit board (PCB),
Electronic equipment, can efficiently solve when SIM is carried out hot plug by prior art to electronic equipment and
The damage phenomenon that its SIM causes, it is to avoid the system operation exception of SIM and electronic equipment, and become
This is relatively low.
For solving above-mentioned technical problem, embodiment of the present utility model provides a kind of SIM card hot plug
Process circuit, comprise: ground connection contact point, interruption contact point, resistance, clamp circuit unit and controller；
Ground connection contact point, interruption contact point are all connected with one end of resistance, the other end of resistance and controller
One GPIO input pin is connected；The output of clamp circuit unit is connected to interrupt contact point；Wherein,
Controller detection ground connection contact point and interruption contact point are turned on or off by physics mode, respectively to user
The deck of identification card carries out powering on or power down process.
Of the present utility model embodiment further provides a kind of printed circuit board (PCB), comprise: described above
SIM card hot plug processes circuit；Printed circuit board (PCB) is provided with the firstth district and connection being connected to interrupt contact point
The secondth district in ground connection contact point.
Of the present utility model embodiment further provides a kind of electronic equipment, comprise fore shell, bonnet and with
Upper described printed circuit board (PCB)；Firstth district is fixed with the first conduction element, and the secondth district is fixed with the second conducting
Part；Bonnet has metal portion；Printed circuit board (PCB) is fixed on fore shell；Bonnet is covered on fore shell, wherein, the
One conduction element and the second conduction element are all held in metal portion connection ground connection contact point and interrupt contact point.
The utility model embodiment in terms of existing technologies, when SIM changed by needs, is opened
The bonnet of electronic equipment, makes ground connection contact point and interrupts contact point disconnection, and now controller detects interruption
The high level of contact point, carries out power down process to the deck of subscriber identification card.It is thus possible to effectively
Ground solves the damage caused when SIM being carried out hot plug in prior art to electronic equipment and SIM thereof
Bad phenomenon, it is to avoid the system operation exception of SIM and electronic equipment, and cost is relatively low.
Further, the most succinct in order to make SIM card hot plug process the design of circuit, can be by
Clamp circuit unit is built in controller.
It addition, clamp circuit unit can comprise power supervisor and pull-up resistor；One end of pull-up resistor
Being connected to interrupt contact point, the other end is connected to the output of power supervisor.Thus, interrupting contact point
When disconnecting with ground connection contact point, electricity can be provided by power supervisor and pull-up resistor for interrupting contact point
Pressure.
Further, controller is caused damage, SIM by the electrostatic in order to avoid producing in electronic equipment
Hot plug processes circuit can also comprise transient voltage suppressor；Transient voltage suppressor is connected
Between ground connection contact point and interruption contact point, and positive pole is connected to ground connection contact point, during negative pole is connected to
Disconnecting contact and resistance.
Further, the firstth district and the secondth district are pad or Lu Tong district；So that the firstth district and the secondth district
Design relatively simple, it is easy to accomplish and cost is relatively low.
Further, electronic equipment also comprises back cover；Back cover has for accommodating the accommodating of printed circuit board (PCB)
Chamber；Accommodating cavity has for accommodating the first conduction element and the opening of the second conduction element；Back cover is fixed on fore shell
Interior and printed circuit board (PCB) is positioned at accommodating cavity.
Further, in order to the design cost making the first conduction element and the second conduction element is relatively low, the first conducting
Part and the second conduction element are thimble or shell fragment；And this design, more ensure that the utility model
Feasibility.
Further, the contact surface in thimble or shell fragment and metal portion is cambered surface；Such that it is able to avoid thimble
Or the metal portion of bonnet is caused damage by shell fragment.
Accompanying drawing explanation
Fig. 1 is to process circuit diagram according to SIM card hot plug in the first embodiment；
Fig. 2 is to process circuit diagram according to SIM card hot plug in the second embodiment；
Fig. 3 is to show at the position relationship of printed circuit board (PCB) according to the firstth district and the secondth district in the 3rd embodiment
It is intended to；
Fig. 4 is according to the structural representation of electronic equipment in the 4th embodiment.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing pair
Each embodiment of the present utility model is explained in detail.But, those of ordinary skill in the art can
To understand, in each embodiment of the utility model, in order to make reader be more fully understood that, the application proposes
Many ins and outs.But, even if there is no these ins and outs and kind based on following embodiment
Plant and change and modifications, it is also possible to realize the application each claim technical scheme required for protection.
First embodiment of the present utility model relates to a kind of SIM card hot plug and processes circuit, such as Fig. 1 institute
Show, comprise: ground connection contact point, interruption contact point, resistance, clamp circuit unit and controller；Ground connection
Contact point, interruption contact point are all connected with one end of resistance, the other end of resistance and the one of controller
GPIO input pin is connected；The output of clamp circuit unit is connected to interrupt contact point；Wherein, control
Device processed detection ground connection contact point and interruption contact point are turned on or off by physics mode, respectively to user's body
The deck of part identification card carries out powering on or power down process.
It addition, in order to the design making SIM card hot plug process circuit is the most succinct, can be by clamper
Circuit unit is built in controller.I.e. provide voltage by controller for interrupting contact point.
In actual application process, in order to avoid controller is caused damage by the electrostatic produced in electronic equipment
Bad, SIM card hot plug processes circuit can also comprise transient voltage suppressor；Transient voltage suppresses
Diode series is at ground connection contact point and interrupts between contact point, and positive pole is connected to ground connection contact point, negative
Pole is connected to interrupt contact point and resistance.It is noted that in order to avoid electrostatic, it is also possible to use anti-
Electrostatic circuit, no longer describes at this.
Specifically, when ground connection contact point and interruption contact point disconnect, during clamp circuit unit can be
Disconnecting contact provides 1.8V voltage.Controller is detecting that interruption contact point is that (high level is at this for high level
Embodiment refers to more than 1.5V) time, the deck of subscriber identification card is carried out power down process.When
When ground connection contact point and interruption contact point conducting, be equivalent to short circuit, now interrupt the voltage of contact point substantially
For 0V, controller is when detecting that the voltage interrupting contact point is low-voltage, to subscriber identification card
Deck carries out upper electric treatment.Therefore in actual application, when SIM is replaced by needs, ground connection
Contact point and interruption contact point disconnect, and controller carries out power down process to the deck of subscriber identification card.
Thus, present embodiment can efficiently solve when SIM carries out in prior art hot plug to electronics
The damage phenomenon that equipment and SIM thereof cause, it is to avoid the system operation exception of SIM and electronic equipment,
And cost is relatively low.
Second embodiment of the present utility model relates to a kind of SIM card hot plug and processes circuit.Second implements
Mode is roughly the same with the first embodiment, is in place of the main distinction: in the first embodiment, pincers
Position circuit unit is built in controller.And in the utility model the second embodiment, as in figure 2 it is shown,
Clamp circuit unit can comprise power supervisor and pull-up resistor R2.
Specifically, one end of pull-up resistor R2 is connected to interrupt contact point, and the other end is connected to power supply
The output of manager.Thus, when interrupting contact point and disconnecting with ground connection contact point, power supply pipe can be passed through
Reason device and pull-up resistor R2 provide voltage for interrupting contact point.
The utility model the 3rd embodiment relates to a kind of printed circuit board (PCB), as it is shown on figure 3, comprise: the
SIM card hot plug described by one embodiment processes circuit；Printed circuit board (PCB) is provided with and is connected to middle disconnecting
First district 1 and second district 2 being connected to ground connection contact point of contact.
Wherein, the first district 1 and the second district 2 can be pad or Lu Tong district；So that the first district 1 He
The design in the second district 2 is relatively simple, it is easy to accomplish and cost is relatively low.But, it is worth mentioning at this point that,
The first district 1 and the second district 2 in present embodiment are not limited to pad or Lu Tong district, and every energy realizes
First district 1 and the arbitrary form in the second district 2 of the utility model purpose, all should be guarantor of the present utility model
Within the scope of protecting.
The utility model the 4th embodiment relates to a kind of electronic equipment.As shown in Figure 4, electronic equipment bag
Containing fore shell 3, bonnet and printed circuit board (PCB) described above；Firstth district is fixed with the first conduction element 4,
Secondth district is fixed with the second conduction element 5；Bonnet has metal portion；Printed circuit board (PCB) is fixed on fore shell；After
Being covered on fore shell, wherein, the first conduction element and the second conduction element are all held in metal portion connection ground connection and connect
Contact and interruption contact point.
It is noted that the metal portion of bonnet can with the non-metal portion of bonnet by double-material injection-molding once
Shaping；Or corresponding to the first conduction element and the position of the second conduction element on bonnet, attach conducting foam
Or conducting film；Thus, the design cost making present embodiment is relatively low.
Electronic equipment in present embodiment can be smart mobile phone, and smart mobile phone the most also comprises and is clamped in
Back cover 6 between fore shell and bonnet；Back cover 6 has the accommodating cavity for accommodating printed circuit board (PCB)；Accommodating
Chamber has for accommodating the first conduction element and the opening of the second conduction element；Back cover 6 is fixed in fore shell and print
Printed circuit board is positioned at accommodating cavity.
It addition, in order to the design cost making the first conduction element and the second conduction element is relatively low, the first conduction element and
Second conduction element is thimble or shell fragment；And this design, more ensure that of the present utility model can
Row.But, it is worth mentioning at this point that, the first conduction element and the second conduction element in present embodiment do not limit
In for thimble or shell fragment, every the first conduction element that can realize the utility model purpose and the second conduction element
Arbitrary form, all should be within protection domain of the present utility model.It addition, thimble or shell fragment are with golden
The contact surface in genus portion is cambered surface；Such that it is able to avoid thimble or shell fragment that the metal portion of bonnet is caused damage.
In actual application, user is under the open state of smart mobile phone, when preparing to change SIM,
Need first to pull down bonnet.Now, the first conduction element and the second conduction element disconnect, and i.e. interrupt contact point and connect
Ground contact point disconnects, and after controller detects the high level signal interrupting contact point, enters SIM deck
Row power down process.Therefore in this way, can be the safest SIM is replaced.When to SIM
When the replacing of card completes, bonnet is covered on fore shell.Now, interrupt contact point and the conducting of ground connection contact point,
After controller detects the low level signal interrupting contact point, SIM deck is carried out upper electric treatment.With
Time, this SIM is searched net action by control system accordingly that control electronic equipment.
By foregoing, it is seen that, present embodiment can efficiently solve in prior art SIM
The damage phenomenon that card causes to electronic equipment and SIM thereof when carrying out hot plug, it is to avoid SIM and electricity
The system operation exception of subset, and cost is relatively low.
It will be understood by those skilled in the art that the respective embodiments described above be realize of the present utility model
Specific embodiment, and in actual applications, can to it, various changes can be made in the form and details, and
Without departing from spirit and scope of the present utility model.
Claims (10)
1. a SIM card hot plug processes circuit, it is characterised in that comprise: ground connection contact point, interruption contact point, resistance, clamp circuit unit and controller；
Described interruption contact point is connected with one end of described resistance, and the other end of described resistance is connected with a GPIO input pin of described controller；
The output of described clamp circuit unit is connected to described interruption contact point；
Wherein, described controller detects described ground connection contact point and described interruption contact point is turned on or off by physics mode, powers on the deck of subscriber identification card or power down process respectively.
SIM card hot plug the most according to claim 1 processes circuit, it is characterised in that described clamp circuit unit is built in described controller.
SIM card hot plug the most according to claim 1 processes circuit, it is characterised in that described clamp circuit unit comprises power supervisor and pull-up resistor；
One end of described pull-up resistor is connected to described interruption contact point, and the other end is connected to the output of described power supervisor.
SIM card hot plug the most according to claim 1 processes circuit, it is characterised in that described SIM card hot plug processes circuit and also comprises transient voltage suppressor；
Described transient voltage suppressor is connected between described ground connection contact point and described interruption contact point, and positive pole is connected to described ground connection contact point, and negative pole is connected to described interruption contact point and described resistance.
5. a printed circuit board (PCB), it is characterised in that comprise the SIM card hot plug described in Claims 1-4 any one and process circuit；
Described printed circuit board (PCB) is provided with the firstth district being connected to described interruption contact point and the secondth district being connected to described ground connection contact point.
Printed circuit board (PCB) the most according to claim 5, it is characterised in that described firstth district and described secondth district are pad or Lu Tong district.
7. an electronic equipment, it is characterised in that comprise fore shell, bonnet and the printed circuit board (PCB) described in claim 5 or 6；
Described firstth district is fixed with the first conduction element, and described secondth district is fixed with the second conduction element；
Described bonnet has metal portion；
Described printed circuit board (PCB) is fixed on described fore shell；
Described bonnet is covered on described fore shell, and wherein, described first conduction element is all held in described metal portion and connects described ground connection contact point and described interruption contact point with described second conduction element.
Electronic equipment the most according to claim 7, it is characterised in that described electronic equipment also comprises the back cover being clamped between described fore shell and described bonnet；
Described back cover has the accommodating cavity for accommodating described printed circuit board (PCB)；
Described accommodating cavity has for accommodating the first conduction element and the opening of the second conduction element；
Described back cover is fixed in described fore shell and described printed circuit board (PCB) is positioned at described accommodating cavity.
Electronic equipment the most according to claim 7, it is characterised in that described first conduction element and described second conduction element are thimble or shell fragment.
Electronic equipment the most according to claim 9, it is characterised in that the contact surface in described thimble or shell fragment and described metal portion is cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620146652.0U CN205566290U (en) | 2016-02-26 | 2016-02-26 | SIM card hot plug treatment circuit, printed circuit board , electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620146652.0U CN205566290U (en) | 2016-02-26 | 2016-02-26 | SIM card hot plug treatment circuit, printed circuit board , electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205566290U true CN205566290U (en) | 2016-09-07 |
Family
ID=56819128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620146652.0U Expired - Fee Related CN205566290U (en) | 2016-02-26 | 2016-02-26 | SIM card hot plug treatment circuit, printed circuit board , electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205566290U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677952A (en) * | 2017-09-26 | 2018-02-09 | 广东欧珀移动通信有限公司 | Detection circuit, detection method and the electronic equipment of subscriber identification card |
-
2016
- 2016-02-26 CN CN201620146652.0U patent/CN205566290U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677952A (en) * | 2017-09-26 | 2018-02-09 | 广东欧珀移动通信有限公司 | Detection circuit, detection method and the electronic equipment of subscriber identification card |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20200226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |