CN208607309U - The protection circuit and its electronic equipment of connector - Google Patents
The protection circuit and its electronic equipment of connector Download PDFInfo
- Publication number
- CN208607309U CN208607309U CN201820767704.5U CN201820767704U CN208607309U CN 208607309 U CN208607309 U CN 208607309U CN 201820767704 U CN201820767704 U CN 201820767704U CN 208607309 U CN208607309 U CN 208607309U
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- connector
- electronic equipment
- processor
- current detection
- electrostatic protection
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Abstract
The utility model embodiment is related to technical field of electronic equipment, discloses the protection circuit and its electronic equipment of a kind of connector.The protection circuit of connector includes: current detection module and electrostatic protection module；One end of electrostatic protection module is connected to the connector of electronic equipment, and the other end of electrostatic protection module is connected to the input terminal of current detection module；The output end of current detection module is connected to the processor of electronic equipment；For current detection module for detecting whether generate electric current in electrostatic protection module, device for processing judges connector with the presence or absence of short circuit phenomenon；Wherein, when the operating voltage of electrostatic protection module is more than predetermined voltage threshold, electric current is generated in electrostatic protection module.It in the utility model, detects in electrostatic protection module whether generate electric current by current detection module, so as to judge whether the operating voltage of electrostatic protection module is more than predetermined voltage threshold, that is, judges the connector of electronic equipment with the presence or absence of short circuit phenomenon.
Description
Technical field
The utility model relates to technical field of electronic equipment, in particular to the protection circuit and its electronics of a kind of connector are set
It is standby.
Background technique
With the rapid development of the electronic equipments such as mobile phone, tablet computer, host desktop, the connector on electronic equipment is continuous
Tend to minimize, such as the Type-C interface of mobile phone, USB interface etc., however due to the miniaturization of connector, data high-speed passes
Pin foot spacing very little that is defeated and exceeding the function restrictions connector such as electric energy power, when leading to High Voltage Power Supply, power supply is easy to be shorted to
The short circuit of connector is caused on other signal wires.Currently, short circuit protection device can be generally installed additional at connector, in connector
When short-circuit, electronic equipment is protected.
At least there are the following problems in the prior art for inventor's discovery: existing short circuit protection device can be to electronic equipment
It is protected, but short circuit protection device cannot be effectively protected；If short circuit protection device is short due to connector
Road and damage, then will lead to short circuit protection device failure, just electronic equipment can not be protected.
Utility model content
The protection circuit and its electronic equipment for being designed to provide a kind of connector of the utility model embodiment, pass through
Whether electric current is generated in current detection module detection electrostatic protection module, so as to judge the work electricity of electrostatic protection module
Whether pressure is more than predetermined voltage threshold, that is, judges the connector of electronic equipment with the presence or absence of short circuit phenomenon.
In order to solve the above technical problems, the embodiments of the present invention provides a kind of protection circuit of connector, even
The protection circuit for connecing device includes: current detection module and electrostatic protection module；One end of electrostatic protection module is connected to electronics and sets
The other end of standby connector, electrostatic protection module is connected to the input terminal of current detection module；The output of current detection module
End is connected to the processor of electronic equipment；Current detection module is used for detecting in electrostatic protection module whether generate electric current, for
Processor judges connector with the presence or absence of short circuit phenomenon；Wherein, when the operating voltage of electrostatic protection module is more than predeterminated voltage threshold
When value, electric current is generated in electrostatic protection module.
The embodiments of the present invention additionally provides a kind of electronic equipment, comprising: at least a connector, at least one above-mentioned
Connector protection circuit and processor；Processor is connected at least a connector.
In terms of existing technologies, one end of electrostatic protection module is connected to electronic equipment to the utility model embodiment
Connector, when short circuit occurs for connector, the operating voltage of electrostatic protection module can be more than predetermined voltage threshold, at this time electrostatic
Electric current is generated in protective module；Therefore, electrostatic is detected by being connected to the current detection module of the other end of electrostatic protection module
Whether electric current is generated in protective module, judges that the connector of electronic equipment is existing with the presence or absence of short circuit with the processor of electronic device
As.
In addition, current detection module includes detecting resistance and voltage collection circuit；The input terminal for detecting resistance forms electric current
The input terminal of detection module, the normal phase input end of voltage collection circuit are connected to the output end of detecting resistance, voltage collection circuit
Inverting input terminal be connected to the input terminal of detecting resistance, the output end of voltage collection circuit forms the output of current detection module
End；Voltage collection circuit is used to acquire the detecting voltage at detecting resistance both ends, and detecting voltage is sent to processor；Wherein,
When generating electric current in electrostatic protection module, detecting voltage is non-zero.Present embodiments provide for one kind of current detection module
Specific implementation.
In addition, voltage collection circuit includes differential operational amplifier and three resistance；Three resistance be respectively first resistor,
Second resistance and 3rd resistor；The output end of differential operational amplifier forms the output end of voltage collection circuit, calculus of differences
The inverting input terminal of amplifier is connected to one end of first resistor, and the other end of first resistor forms the reverse phase of voltage collection circuit
Input terminal；The normal phase input end of differential operational amplifier is connected to one end of second resistance, and the other end of second resistance forms electricity
Press the inverting input terminal of Acquisition Circuit；3rd resistor is connected to the output end and differential operational amplifier of differential operational amplifier
Between inverting input terminal.Present embodiments provide for a kind of specific implementations of voltage collection circuit, are put by calculus of differences
Big device amplifies the voltage at collected detecting resistance both ends, and processor of being more convenient for is detected, and processor is avoided to connect
When receiving interference voltage, there are short circuit phenomenons for erroneous judgement connector.
In addition, electrostatic protection module includes multiple electrostatic protectors, more signals of multiple electrostatic protectors and connector
Line connects one to one；The output end of multiple electrostatic protectors is all connected to the input terminal of current detection module.Present embodiment
Provide the specific structure of electrostatic protection module.
In addition, electrostatic protector is diode.
In addition, electronic equipment further includes prompt element；Prompt element is connected to processor；Element is prompted to be used in processor
Determine that connector there are when short circuit phenomenon, is prompted.Present embodiment by prompt element to the short circuit phenomenon of connector into
Row prompt.
In addition, prompt element is LED light.
In addition, electronic equipment includes display screen；Display screen is connected to processor；Display screen is used to determine to connect in processor
Device is prompted there are when short circuit phenomenon.Present embodiment by the display screen of electronic equipment to the short circuit phenomenon of connector into
Row prompt.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is the schematic diagram according to the protection circuit of the connector of the utility model first embodiment；
Fig. 2 is the schematic diagram according to the protection circuit of the connector of the utility model second embodiment；
Fig. 3 is the schematic diagram according to the protection circuit of the connector of the utility model second embodiment, wherein electrostatic is protected
Protecting module includes multiple electrostatic protectors；
Fig. 4 is the schematic diagram according to the protection circuit of the connector of the utility model third embodiment；
Fig. 5 is the schematic diagram according to the electronic equipment of the 4th embodiment of the utility model；
Fig. 6 is the schematic diagram according to the electronic equipment of the 5th embodiment of the utility model；
Fig. 7 is the schematic diagram according to the electronic equipment of the utility model sixth embodiment.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing to this
Each embodiment of utility model is explained in detail.However, it will be understood by those skilled in the art that practical at this
In novel each embodiment, in order to make the reader understand this application better, many technical details are proposed.But even if do not have
It is claimed that the application also may be implemented in these technical details and various changes and modifications based on the following respective embodiments
Technical solution.
The first embodiment of the utility model is related to a kind of protection circuit of connector, is applied to an electronic equipment, electricity
Sub- equipment is, for example, mobile phone, tablet computer, laptop etc., and electronic equipment has connector, and connector can be Type-C
Interface, USB interface etc..The protection circuit of connector includes: current detection module 1 and electrostatic protection module 2, electrostatic protection mould
One end of block 2 is connected to the connector 3 of electronic equipment, and the other end of electrostatic protection module 2 is connected to current detection module 1
Input terminal, the output end of current detection module 1 are connected to the processor 4 of electronic equipment.Wherein, processor 4 can be electronics and set
The microcontroller of standby primary processor or electronic equipment, it is so without being limited thereto, or the protection circuit of connector is additional
Increase a special microcontroller.
When connector 3 is without short circuit, electrostatic protection module 2 is in off position, does not generate in electrostatic protection module 2
Electric current；When the short circuit of connector 3, the operating voltage of electrostatic protection module 2 is more than predetermined voltage threshold, in electrostatic protection module 2
Generate electric current；Current detection module 1 is for detecting whether generate electric current in electrostatic protection module 2, the judgement of device 4 connection for processing
Device 3 whether there is short circuit phenomenon, and when current detection module 1 detects electric current, it is existing that processor 4 judges that connector 3 has short circuit
As；When current detection module 1 does not detect electric current, processor 4 judges connector 3, and there is no short circuit phenomenons.Wherein, electric current
Detection module 1 and connector 3 are also attached to the ground terminal of electronic equipment.
In terms of existing technologies, one end of electrostatic protection module is connected to the connection of electronic equipment to present embodiment
Device, when short circuit occurs for connector, the operating voltage of electrostatic protection module can be more than predetermined voltage threshold, at this time electrostatic protection mould
Electric current is generated in block；Therefore, electrostatic protection mould is detected by being connected to the current detection module of the other end of electrostatic protection module
Whether electric current is generated in block, judges the connector of electronic equipment with the presence or absence of short circuit phenomenon with the processor of electronic device.
The second embodiment of the utility model is related to a kind of protection circuit of connector.Second embodiment is first
Refinement on the basis of embodiment, main refinement place are: referring to FIG. 2, current detection module 1 includes detecting resistance R0With
Voltage collection circuit 11.
Detect resistance R0Input terminal formed current detection module 1 input terminal, voltage collection circuit 11 positive input
End is connected to detecting resistance R0Output end, the inverting input terminal of voltage collection circuit 11 be connected to detecting resistance R0Input terminal,
The output end of voltage collection circuit 11 forms the output end of current detection module 1.Wherein, resistance R is detected0Output end be also connected with
In the ground terminal of electronic equipment.
In the present embodiment, the electric current that electrostatic protection module 2 generates flows into detecting resistance R0Afterwards, resistance R is detected0Both ends shape
At detecting voltage, voltage collection circuit 11 is for acquiring detecting resistance R0The detecting voltage at both ends, and detecting voltage is sent to
Processor 4, for example, the output end of voltage collection circuit 11 is connected to the analog-to-digital conversion interface of processor 4, the modulus of processor 4
Translation interface by low transition be high level when, judge that there are short circuit phenomenons for connector 3.Wherein, when electrostatic protection module 2
When middle generation electric current, detecting voltage is non-zero.
In one example, referring to FIG. 3, electrostatic protection module 2 includes multiple electrostatic protectors 21, multiple electrostatic protections
Device 21 and more signal wires 31 of connector 3 connect one to one, that is, the quantity and electrostatic protection of the signal wire 31 of connector 3
The quantity of device 21 is identical, and every signal wire 31 is correspondingly connected to an electrostatic protector 21；Multiple electrostatic protectors 21 it is defeated
Outlet is all connected to the input terminal of current detection module 1, specifically, the output end of multiple electrostatic protectors 21 is all connected to detect
Resistance R0Input terminal.Wherein, electrostatic protector 21 can be diode, when certain root signal wire 31 and power supply line of connector 3
When 32 short circuit, the diode for being connected to the signal wire 31 is reversed breakdown, generates breakdown current.
Present embodiment provides a kind of specific implementation side of current detection module for first embodiment
Formula.
The third embodiment of the utility model is related to a kind of protection circuit of connector.Third embodiment is second
Refinement on the basis of embodiment, main refinement place are: please refer to Fig. 4 (by taking the protection circuit of the connector of Fig. 3 as an example,
So it is not limited), voltage collection circuit 11 includes differential operational amplifier 111 and three resistance；Three resistance are respectively
One resistance R1, second resistance R2And 3rd resistor R3。
The output end of differential operational amplifier 111 forms the output end of voltage collection circuit 11, differential operational amplifier 111
Inverting input terminal be connected to first resistor R1One end, first resistor R1The other end formed voltage collection circuit 11 reverse phase
Input terminal；The normal phase input end of differential operational amplifier 111 is connected to second resistance R2One end, second resistance R2The other end
The inverting input terminal of resistance formation voltage collection circuit 11；3rd resistor R3It is connected to the output end of differential operational amplifier 111
Between the inverting input terminal of differential operational amplifier 111.
In the present embodiment, the reverse input end of differential operational amplifier 111 passes through first resistor R1It is connected to detecting resistance R0
Input terminal, the positive input of differential operational amplifier 111 passes through second resistance R2It is connected to detecting resistance R0Output end,
So as to by collected detecting resistance R0The detecting voltage at both ends amplifies.
Present embodiment provides a kind of specific implementation side of voltage collection circuit for second embodiment
Formula is amplified by voltage of the differential operational amplifier to collected detecting resistance both ends, is detected convenient for processor,
Avoid processor when receiving interference voltage, there are short circuit phenomenons for erroneous judgement connector.
The 4th embodiment of the utility model is related to a kind of electronic equipment, for example, mobile phone, tablet computer, laptop
Deng as shown in figure 5, electronic equipment includes that at least a connector 3, an at least first embodiment is any into third embodiment
The protection circuit 5 and processor 4 of the connector of item；Processor 4 is connected at least a connector 3.It should be noted that Fig. 4
In the only protection circuit 5 of schematic description connector 3 and connector quantity, right the present embodiment do not make any limit to this
System.
In terms of existing technologies, one end of electrostatic protection module is connected to the connection of electronic equipment to present embodiment
Device, when short circuit occurs for connector, the operating voltage of electrostatic protection module can be more than predetermined voltage threshold, at this time electrostatic protection mould
Electric current is generated in block；Therefore, electrostatic protection mould is detected by being connected to the current detection module of the other end of electrostatic protection module
Whether electric current is generated in block, judges the connector of electronic equipment with the presence or absence of short circuit phenomenon with the processor of electronic device.
The 5th embodiment of the utility model is related to a kind of electronic equipment.5th embodiment is in the 4th embodiment base
Improvement on plinth, mainly thes improvement is that: as shown in fig. 6, electronic equipment further includes prompt element 6, element 6 being prompted to be connected to
Processor 4.
Element 6 is prompted to be used to determine that connector 3 there are when short circuit phenomenon, is prompted in processor 4.
In one example, prompt element 6 is LED light, is determining that connector 3, can there are when short circuit phenomenon in processor 4
It is prompted with flashing by LED light.
Present embodiment is for the 4th embodiment, by prompting element to propose the short circuit phenomenon of connector
Show.
The utility model sixth embodiment is related to a kind of electronic equipment, and sixth embodiment is in the 4th embodiment base
Improvement on plinth, mainly thes improvement is that: as shown in fig. 7, electronic equipment further includes display screen 7, display screen 7 is connected to processing
Device 4.
Display screen 7 is used to determine that connector 3 there are when short circuit phenomenon, is prompted in processor 4.For example, in display screen 7
It is upper to show that default text is prompted.
Present embodiment is existing to the short circuit of connector by the display screen of electronic equipment for the 4th embodiment
As being prompted.It should be noted that the present embodiment can also be used as improvement on the basis of five embodiments, can achieve same
The technical effect of sample.
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific implementation of the utility model
Example, and in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit of the utility model
And range.
Claims (9)
1. a kind of protection circuit of connector is applied to an electronic equipment, which is characterized in that the protection circuit packet of the connector
It includes: current detection module and electrostatic protection module；
One end of the electrostatic protection module is connected to the connector of electronic equipment, the other end connection of the electrostatic protection module
In the input terminal of current detection module；The output end of the current detection module is connected to the processor of the electronic equipment；
The current detection module is for detecting in the electrostatic protection module whether generate electric current, for processor judgement
The connector whether there is short circuit phenomenon；Wherein, when the operating voltage of the electrostatic protection module is more than predetermined voltage threshold
When, electric current is generated in the electrostatic protection module.
2. the protection circuit of connector according to claim 1, which is characterized in that the current detection module includes detecting
Resistance and voltage collection circuit；
The input terminal of the detecting resistance forms the input terminal of the current detection module, and the positive of the voltage collection circuit is defeated
Enter the output end that end is connected to the detecting resistance, is connected to the detecting described in the inverting input terminal of the voltage collection circuit
The input terminal of resistance, the output end of the voltage collection circuit form the output end of the current detection module；
The voltage collection circuit is used to acquire the detecting voltage at the detecting resistance both ends, and the detecting voltage is sent to
The processor；Wherein, when generating electric current in the electrostatic protection module, the detecting voltage is non-zero.
3. the protection circuit of connector according to claim 2, which is characterized in that the voltage collection circuit includes difference
Operational amplifier and three resistance；Three resistance is respectively first resistor, second resistance and 3rd resistor；
The output end of the differential operational amplifier forms the output end of the voltage collection circuit, the differential operational amplifier
Inverting input terminal be connected to one end of the first resistor, the other end of the first resistor forms the voltage collection circuit
Inverting input terminal；
The normal phase input end of the differential operational amplifier is connected to one end of the second resistance, the second resistance it is another
End forms the inverting input terminal of the voltage collection circuit；
The reverse phase that the 3rd resistor is connected to the output end and the differential operational amplifier of the differential operational amplifier is defeated
Enter between end.
4. the protection circuit of connector according to claim 1, which is characterized in that electrostatic protection module includes multiple electrostatic
More signal wires of protector, the multiple electrostatic protector and the connector connect one to one；The multiple electrostatic is protected
The output end of shield device is all connected to the input terminal of the current detection module.
5. the protection circuit of connector according to claim 4, which is characterized in that the electrostatic protector is diode.
6. a kind of electronic equipment characterized by comprising at least a connector, an at least claim 1 are into claim 5
The protection circuit and processor of described in any item connectors；The processor is connected to described at least a connector.
7. electronic equipment according to claim 6, which is characterized in that the electronic equipment further includes prompt element；It is described
Prompt element is connected to the processor；
The prompt element is used to determine that the connector there are when short circuit phenomenon, is prompted in the processor.
8. electronic equipment according to claim 7, which is characterized in that the prompt element is LED light.
9. electronic equipment according to claim 6, which is characterized in that the electronic equipment includes display screen；The display
Screen is connected to the processor；
The display screen is used to determine that the connector there are when short circuit phenomenon, is prompted in the processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820767704.5U CN208607309U (en) | 2018-05-22 | 2018-05-22 | The protection circuit and its electronic equipment of connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820767704.5U CN208607309U (en) | 2018-05-22 | 2018-05-22 | The protection circuit and its electronic equipment of connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208607309U true CN208607309U (en) | 2019-03-15 |
Family
ID=65662653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820767704.5U Active CN208607309U (en) | 2018-05-22 | 2018-05-22 | The protection circuit and its electronic equipment of connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208607309U (en) |
-
2018
- 2018-05-22 CN CN201820767704.5U patent/CN208607309U/en active Active
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