CN207098699U - The interface current-limiting circuit of compatible apple and Android system - Google Patents
The interface current-limiting circuit of compatible apple and Android system Download PDFInfo
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- CN207098699U CN207098699U CN201721005153.0U CN201721005153U CN207098699U CN 207098699 U CN207098699 U CN 207098699U CN 201721005153 U CN201721005153 U CN 201721005153U CN 207098699 U CN207098699 U CN 207098699U
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Abstract
The utility model provides a kind of interface current-limiting circuit of compatible apple and Android system, including：When equipment interface connects the first equipment, signal output apparatus exports the first signal；When the equipment interface connects the second equipment, the signal output apparatus exports secondary signal；Signal level shift circuit generates the second enable signal according to the enable signal of the first signal generation first, or according to the secondary signal；First enable signal inputs to first switch circuit, and second enable signal inputs to second switch circuit；The first switch circuit and the second switch circuit are used to be connected between interface power and the equipment interface；The first switch circuit directly turns on when receiving first enable signal；The second switch circuit receives the second enable signal time limit conductance and led to.The utility model solves the problems, such as that existing iPhone and the compatible use of Android mobile phone cause remote control power consumption excessive.
Description
Technical field
It the utility model is related to interface circuit technical field, the interface limit of more particularly to a kind of compatible apple and Android system
Current circuit.
Background technology
The remote control of unmanned plane connects iPhone or Android mobile phone by TypeA types USB interface, by iPhone or
When Android mobile phone checks the picture of unmanned plane shooting, remote control is defaulted as main frame during due to connection, thus can be iPhone or
Android mobile phone is charged, and the electricity of battery in remote control is lost, greatly shortens the cruising time of unmanned controller, is reduced
The convenience and performance indications used.In the prior art, remote control wants to support iPhone, it is necessary to do MFI chip authentications,
Such a authentication requesting iPhone can only be used as main frame, but remote control needs to supply mobile phone when iPhone has just plugged remote control
Electricity, and current limliting is unable to, otherwise None- identified, waits and regard iPhone as main frame by usb protocol after identifying, remote control need not supply
Electricity.
But Android mobile phone is because, it is necessary to which compatibility is high, therefore Android mobile phone can only be used as slave more than model, in connection remote control
During device, remote control can charge to Android mobile phone, and charging current has 500mA, and power is larger, make remote control be intended for single use the time from
It is reduced within about 3 hours about 1 hour.
Therefore, it is necessary to design a kind of iPhone and Android mobile phone it is compatible use and remote control power consumption will not be caused excessive and
The interface circuit that cruising time greatly shortens.
Utility model content
The purpose of this utility model is to provide a kind of interface current-limiting circuit of compatible apple and Android system, existing to solve
The problem of some iPhones and the compatible use of Android mobile phone cause remote control power consumption.
In order to solve the above technical problems, the utility model provides the interface current limliting electricity of a kind of compatible apple and Android system
Road, the compatible apple and the interface current-limiting circuit of Android system connect the first equipment or the second equipment, the compatible apple and
The interface current-limiting circuit of Android system includes signal output apparatus, signal level shift circuit, first switch circuit, second switch
Circuit, interface power and equipment interface, wherein：
When the equipment interface connects first equipment, the signal output apparatus exports the first signal；The equipment
When interface connects second equipment, the signal output apparatus exports secondary signal；
The signal level shift circuit is believed according to the enable signal of the first signal generation first, or according to described second
Number generation the second enable signal；First enable signal inputs to the first switch circuit, and second enable signal is defeated
Enter to the second switch circuit；
The first switch circuit and the second switch circuit are used to be connected to the interface power and the equipment connects
Between mouthful；
The first switch circuit directly turns on when receiving first enable signal；
The second switch circuit receives the second enable signal time limit conductance and led to.
Optionally, in the interface current-limiting circuit of described compatible apple and Android system, the interface power output connects
Mouth voltage, the signal level shift circuit enable according to interface voltage output first enable signal or described second
Signal.
Optionally, in the interface current-limiting circuit of described compatible apple and Android system, the signal level conversion electricity
Road includes the first n type field effect transistor and the second n type field effect transistor, the source electrode of first n type field effect transistor
Inputting first enable signal, the source electrode of second n type field effect transistor inputs second enable signal, and described the
One n type field effect transistor connects system power supply, the first N-type field effect with the grid of second n type field effect transistor
The drain electrode of transistor and second n type field effect transistor is answered to input the interface voltage, the first N-type field effect transistor
The drain electrode of pipe exports first enable signal, the described second enabled letter of drain electrode output of second n type field effect transistor
Number.
Optionally, in the interface current-limiting circuit of described compatible apple and Android system, the voltage of the system power supply
It is worth for 3~3.6V.
Optionally, in the interface current-limiting circuit of described compatible apple and Android system, the first switch circuit bag
The first p type field effect transistor is included, the source electrode of first p type field effect transistor inputs the interface voltage, the first P
The grid of type field-effect transistor inputs first enable signal, the drain electrode connection institute of first p type field effect transistor
State the first equipment.
Optionally, in the interface current-limiting circuit of described compatible apple and Android system, the second switch circuit bag
The second p type field effect transistor is included, the source electrode of second p type field effect transistor inputs the interface voltage, the 2nd P
The grid of type field-effect transistor inputs second enable signal, the drain electrode connection institute of second p type field effect transistor
State the second equipment.
Optionally, in the interface current-limiting circuit of described compatible apple and Android system, the second switch circuit is also
Including current-limiting resistance, the current-limiting resistance be connected to the drain electrode of second p type field effect transistor and second equipment it
Between, the resistance of the current-limiting circuit is the Europe of 2 Europe~4.
Optionally, in the interface current-limiting circuit of described compatible apple and Android system, the voltage of the interface voltage
It is worth for 4.5~5.5V.
Optionally, in the interface current-limiting circuit of described compatible apple and Android system, first equipment is use
The equipment of Apple Macintosh operating system.
Optionally, in the interface current-limiting circuit of described compatible apple and Android system, second equipment is use
The equipment of Android system.
In the interface current-limiting circuit of compatible apple provided by the utility model and Android system, connected by equipment interface
During the first equipment, signal output apparatus exports the first signal, and signal level shift circuit is enabled according to the first signal generation first
Signal, first switch circuit directly turn on when receiving first enable signal, prevent connect the first equipment compatible apple and
The interface current-limiting circuit of Android system causes authentification failure to carrying out current limliting between the first equipment and interface power, additionally by
When equipment interface connects the second equipment, signal output apparatus output secondary signal, signal level shift circuit is according to secondary signal
The second enable signal is generated, second switch circuit receives the second enable signal time limit conductance and led to, it is possible to achieve connecting interface
Current limliting conducting between power supply and second equipment, prevents that interface power is excessive to the second equipment charge electric current.
Brief description of the drawings
Fig. 1 is the interface current-limiting circuit signal level conversion electricity of the embodiment compatibility apple of the utility model one and Android system
The schematic diagram on road；
Fig. 2 be the embodiment compatibility apple of the utility model one and Android system interface current-limiting circuit first switch circuit and
The schematic diagram of second switch circuit；
Shown in figure：10- signal level shift circuits；20- first switch circuits；30- second switch circuits；40- equipment
Interface；50- signal output apparatus.
Embodiment
Below in conjunction with the drawings and specific embodiments to the utility model proposes compatible apple and Android system interface limit
Current circuit is described in further detail.According to following explanation and claims, advantages and features of the present utility model will be more clear
Chu.It should be noted that accompanying drawing uses using very simplified form and non-accurately ratio, only to conveniently, lucidly
Aid in illustrating the purpose of the utility model embodiment.
Core concept of the present utility model is to provide a kind of interface current-limiting circuit of compatible apple and Android system, with solution
The problem of certainly existing iPhone and the compatible use of Android mobile phone cause remote control power consumption.
To realize above-mentioned thought, the utility model provides a kind of interface current-limiting circuit of compatible apple and Android system,
As shown in figure 1, the compatible apple connects the first equipment or the second equipment, the compatibility with the interface current-limiting circuit of Android system
The interface current-limiting circuit of apple and Android system includes signal output apparatus 50, signal level shift circuit 10, first switch electricity
Road 20, second switch circuit 30, equipment interface 40 and interface power Vusb, wherein：The equipment interface 40 connects described first
During equipment, the signal output apparatus 50 exports the first signal V1；It is described when the equipment interface 40 connects second equipment
Signal output apparatus 50 exports secondary signal V2；The signal level shift circuit 10 generates first according to the first signal V1
Enable signal Ven1, or the second enable signal Ven2 is generated according to the secondary signal V2；The first enable signal Ven1 is defeated
Enter and input to the second switch circuit 30 to the first switch circuit 20, the second enable signal Ven2；Described first
On-off circuit 20 and the second switch circuit 30 are used to be connected between the interface power Vusb and the equipment interface 40；
The first switch circuit 20 directly turns on when receiving the first enable signal Ven1；The second switch circuit 30 receives institute
The second enable signal time limit conductance is stated to lead to.
First equipment is using the equipment of Apple Macintosh operating system, such as iPhone.Second equipment is use
The equipment of Android system, such as Android mobile phone.In the interface current limliting of compatible apple provided by the utility model and Android system electricity
Lu Zhong, when connecting the first equipment by equipment interface, such as during iPhone, signal output apparatus exports the first signal, signal
According to first the first enable signal of signal generation, first switch circuit receives straight during first enable signal level shifting circuit
Conducting is connect, the interface current-limiting circuit for preventing from connecting the compatible apple and Android system of the first equipment is to the first equipment and interface power
Between carry out current limliting, cause iPhone to be converted to the MFI authentification failures of main frame, additionally by equipment interface connect the second equipment
When, such as during Android mobile phone, signal output apparatus output secondary signal, signal level shift circuit is according to secondary signal generation the
Two enable signals, second switch circuit receive the second enable signal time limit conductance and led to, it is possible to achieve connecting interface power supply and
Current limliting conducting between second equipment, prevents that interface power is excessive to the second equipment charge electric current.In the utility model,
IPhone and Android mobile phone be compatible to be used and will not cause that remote control power consumption is excessive and cruising time greatly shortens.
Specifically, the interface power Vusb output interface voltages Vusb, the signal level shift circuit is according to
Interface voltage Vusb exports second enable signals of the first enable signal Ven1 or described Ven2.The signal level conversion electricity
Road 10 includes the first n type field effect transistor Q1 and the second n type field effect transistor Q2, first n type field effect transistor
Q1 source electrode inputs the first enable signal Ven1, the source electrode input described second of the second n type field effect transistor Q2
Enable signal Ven2, the first n type field effect transistor Q1 connect system with the grid of the second n type field effect transistor Q2
Described in system power supply Vsys, the first n type field effect transistor Q1 and the second n type field effect transistor Q2 drain electrode input
Interface voltage Vusb, the first n type field effect transistor Q1 drain electrode exports the first enable signal Ven1, and described second
N type field effect transistor Q2 drain electrode exports the second enable signal Ven2.
Further, in the interface current-limiting circuit of described compatible apple and Android system, the first switch circuit
20 source electrodes including the first p type field effect transistor Q3, the first p type field effect transistor Q3 input the interface voltage
Vusb, the first p type field effect transistor Q3 grid input the first enable signal Ven1, the first p-type field effect
Transistor Q3 drain electrode is answered to connect first equipment.The second switch circuit 30 includes the second p type field effect transistor Q4,
The source electrode of the second p type field effect transistor Q4 inputs the interface voltage Vusb, the second p type field effect transistor Q4
Grid input the second enable signal Ven2, the drain electrode connection described second of the second p type field effect transistor Q4 is set
It is standby.
In addition, in the interface current-limiting circuit of described compatible apple and Android system, the second switch circuit also wraps
Current-limiting resistance R1 is included, the current-limiting resistance R1 is connected to the drain electrode of the second p type field effect transistor Q4 and described second and set
Between standby, the resistance of the current-limiting circuit R1 is the Europe of 2 Europe~4.The magnitude of voltage of the system power supply Vsys is 3~3.6V, preferably
For 3.3V.The magnitude of voltage of the interface voltage Vusb is 4.5~5.5V, preferably 5V.As shown in Fig. 2 first switch is electric
Road includes second resistance R2, and second resistance R2 resistance is zero.
The signal output apparatus connects first equipment or second equipment, and the signal output apparatus connects institute
When stating the first equipment, output the first signal V1, when the signal output apparatus connects second equipment, secondary signal is exported
The equipment of connection is identified by V2, i.e. signal output apparatus, if recognize connection is the first equipment, the first signal V1 is low
Level, secondary signal V2 high level, if recognize connection is the second equipment, the first signal V1 high level, secondary signal V2
Low level, because the grid of the first n type field effect transistor and the second n type field effect transistor connects system power supply, therefore, when
First signal V1 high level and during secondary signal V2 low levels, the first signal V1 is more than the voltage of system power supply, the first N-type field effect
Transistor cutoff is answered, secondary signal V2 is less than the voltage of system power supply, the conducting of the second n type field effect transistor, the first enabled letter
Number Ven1 value is interface voltage Vusb, about 5V, if now the first enable signal Ven1 directly takes the voltage of system power supply
Value 3.3V, due to the source electrode connecting interface voltage Vusb of the first p type field effect transistor, then it cannot be guaranteed that one surely makes the first P
Type field-effect transistor ends, and the second enable signal Ven2 value is secondary signal V2 value, is low level, it follows that letter
Acting as number level shifting circuit will be by the first signal V1 and secondary signal of signal output apparatus, typically controller output
V2 value (generally there was only 3.3V), is converted to 5V or so high level, can be with the more reliable p type field effect transistor of guarantee first
With the cut-off of the second p type field effect transistor.
For example, during the first equipment of connection, when the first signal V1 low levels during secondary signal V2 high level, the first signal V1
Less than the voltage of system power supply, the conducting of the first n type field effect transistor, secondary signal V2 is more than the voltage of system power supply, the 2nd N
Type field-effect transistor ends, and the second enable signal Ven2 value is interface voltage Vusb, about 5V, the first enable signal
Ven1 value is pulled down by 3rd resistor, is the first signal V1 value, is low level.When the second enable signal Ven2 is connected to
The grid of two p type field effect transistors and when being interface voltage Vusb, the cut-off of the second p type field effect transistor, the first enabled letter
When number Ven1 is low level, the conducting of the first p type field effect transistor, interface power and the connection of the first equipment, second resistance R2's
Resistance is zero, only serves the effect of signal isolation.
For example, during the second equipment of connection, when the first signal V1 high level during secondary signal V2 low levels, the first signal V1
More than the voltage of system power supply, the cut-off of the first n type field effect transistor, secondary signal V2 is less than the voltage of system power supply, the 2nd N
Type field-effect transistor turns on, and the first enable signal Ven1 value is interface voltage Vusb, about 5V, the second enable signal
Ven2 value is pulled down by the 4th resistance R4, is secondary signal V2 value, is low level.When the first enable signal Ven1 is connected to
The grid of first p type field effect transistor and when being interface voltage Vusb, the cut-off of the first p type field effect transistor, second is enabled
When signal Ven2 is low level, the conducting of the second p type field effect transistor, interface power and the second equipment connect, due to current limliting electricity
The current limliting that R1 carries out interface power and the second equipment room is hindered, therefore interface power is smaller to the charging current of the second equipment.
To sum up, above-described embodiment has been carried out in detail to the various configuration of compatible apple and the interface current-limiting circuit of Android system
Illustrate, certainly, the utility model includes but is not limited to configuration cited in above-mentioned implementation, any to be provided in above-described embodiment
Configuration on the basis of enter the content of line translation, belong to the scope that the utility model is protected.Those skilled in the art can root
Draw inferences about other cases from one instance according to the content of above-described embodiment.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the scope of the utility model
Calmly, any change, the modification that the those of ordinary skill in the utility model field does according to the disclosure above content, belonging to right will
Seek the protection domain of book.
Claims (10)
1. the interface current-limiting circuit of a kind of compatible apple and Android system, the interface current limliting electricity of the compatible apple and Android system
Road connects the first equipment or the second equipment, it is characterised in that the interface current-limiting circuit of the compatible apple and Android system includes
Signal output apparatus, signal level shift circuit, first switch circuit, second switch circuit, interface power and equipment interface, its
In：
When the equipment interface connects first equipment, the signal output apparatus exports the first signal；The equipment interface
When connecting second equipment, the signal output apparatus exports secondary signal；
The signal level shift circuit is given birth to according to the enable signal of the first signal generation first, or according to the secondary signal
Into the second enable signal；First enable signal inputs to the first switch circuit, and second enable signal inputs to
The second switch circuit；
The first switch circuit and the second switch circuit be used to being connected to the interface power and the equipment interface it
Between；
The first switch circuit directly turns on when receiving first enable signal；
The second switch circuit receives the second enable signal time limit conductance and led to.
2. the interface current-limiting circuit of compatible apple and Android system as claimed in claim 1, it is characterised in that the interface electricity
Source output interface voltage, the signal level shift circuit export first enable signal or described according to the interface voltage
Second enable signal.
3. the interface current-limiting circuit of compatible apple and Android system as claimed in claim 2, it is characterised in that the signal electricity
Flat change-over circuit includes the first n type field effect transistor and the second n type field effect transistor, the first N-type field effect transistor
The source electrode of pipe inputs first enable signal, the described second enabled letter of source electrode input of second n type field effect transistor
Number, first n type field effect transistor connects system power supply with the grid of second n type field effect transistor, and described
The drain electrode of one n type field effect transistor and second n type field effect transistor inputs the interface voltage, first N-type
The drain electrode of field-effect transistor exports first enable signal, described in the drain electrode output of second n type field effect transistor
Second enable signal.
4. the interface current-limiting circuit of compatible apple and Android system as claimed in claim 3, it is characterised in that the system electricity
The magnitude of voltage in source is 3~3.6V.
5. the interface current-limiting circuit of compatible apple and Android system as claimed in claim 2, it is characterised in that described first opens
Powered-down road includes the first p type field effect transistor, and the source electrode of first p type field effect transistor inputs the interface voltage,
The grid of first p type field effect transistor inputs first enable signal, the leakage of first p type field effect transistor
Pole connects first equipment.
6. the interface current-limiting circuit of compatible apple and Android system as claimed in claim 2, it is characterised in that described second opens
Powered-down road includes the second p type field effect transistor, and the source electrode of second p type field effect transistor inputs the interface voltage,
The grid of second p type field effect transistor inputs second enable signal, the leakage of second p type field effect transistor
Pole connects second equipment.
7. the interface current-limiting circuit of compatible apple and Android system as claimed in claim 6, it is characterised in that described second opens
Powered-down road also includes current-limiting resistance, and the current-limiting resistance is connected to the drain electrode of second p type field effect transistor and described the
Between two equipment, the resistance of the current-limiting circuit is the Europe of 2 Europe~4.
8. the interface current-limiting circuit of compatible apple and Android system as claimed in claim 2, it is characterised in that the interface electricity
The magnitude of voltage of pressure is 4.5~5.5V.
9. the interface current-limiting circuit of compatible apple and Android system as claimed in claim 1, it is characterised in that described first sets
Standby is the equipment using Apple Macintosh operating system.
10. the interface current-limiting circuit of compatible apple and Android system as claimed in claim 1, it is characterised in that described second
Equipment is the equipment using Android system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721005153.0U CN207098699U (en) | 2017-08-11 | 2017-08-11 | The interface current-limiting circuit of compatible apple and Android system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721005153.0U CN207098699U (en) | 2017-08-11 | 2017-08-11 | The interface current-limiting circuit of compatible apple and Android system |
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| Publication Number | Publication Date |
|---|---|
| CN207098699U true CN207098699U (en) | 2018-03-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109062842A (en) * | 2018-08-15 | 2018-12-21 | 深圳市道通智能航空技术有限公司 | A kind of communication means, device and the remote controler of remote controler and mobile terminal |
-
2017
- 2017-08-11 CN CN201721005153.0U patent/CN207098699U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109062842A (en) * | 2018-08-15 | 2018-12-21 | 深圳市道通智能航空技术有限公司 | A kind of communication means, device and the remote controler of remote controler and mobile terminal |
| WO2020034908A1 (en) * | 2018-08-15 | 2020-02-20 | 深圳市道通智能航空技术有限公司 | Method for communication between remote control and mobile terminal, device, and remote control |
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