CN209342921U - Multiplex roles formula navigation module - Google Patents
Multiplex roles formula navigation module Download PDFInfo
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- CN209342921U CN209342921U CN201821747739.9U CN201821747739U CN209342921U CN 209342921 U CN209342921 U CN 209342921U CN 201821747739 U CN201821747739 U CN 201821747739U CN 209342921 U CN209342921 U CN 209342921U
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- multiplex roles
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Abstract
The utility model discloses a kind of multiplex roles formula navigation module, including main control chip, SD card power supply circuit and interface circuit, and the main control chip is electrically connected with the SD card power supply circuit and the interface circuit respectively.The utility model is a kind of multiplex roles formula navigation module, by the way that SD card power supply circuit is arranged, navigation module can be made for SD card power supply, and can navigation module be attached with SD card, improve the extension function of navigation module, improve the practicability of navigation module, it is convenient for the user to use, when navigation module needs to carry out upgrade-system, can directly it be upgraded using SD card, facilitate user to operate, improve the convenience of user's operation, realizes the diversified function of navigation module；Meanwhile by the way that multiple interface circuits are arranged on navigation module, multiple connecting interfaces can be provided, the insufficient problem in grafting port is avoided the occurrence of, improves the extended capability of navigation module, further facilitate the use of user.
Description
Technical field
The utility model relates to navigation module fields, more particularly to a kind of multiplex roles formula navigation module.
Background technique
Vehicle-mounted GPS navigator: with universal and road the construction of automobile, intercity economic interaction is more frequent, living
Dynamic region is also increasing；In order to improve the quality of living, a large amount of stress-relieving activity, holding for exploring make our not offices
The case where limiting in a pocket of oneself understanding, not recognizing road, can not find destination is also occurred repeatedly, vehicle-mounted with regard to this
GPS navigator will enter into the world of car owner with suitable price, become the basic equipment on vehicle.Vehicle-mounted GPS navigator solves
Scheme, be in fact it is most flexibly and most complicated, vehicle-mounted GPS navigator can satisfy vehicle-mounted needs there are many kinds of solution.
The personal user for needing vehicle-mounted GPS navigator prefers self-driving travel, or use of often going on business.And in the market specially
Vehicle-mounted GPS navigator receiver or vehicle-mounted GPS navigator receiving module are all very expensive, easily thousands of members up to ten thousand.According to
The vehicle GPS receiving module that vehicle specially designs, needing businessman is user installation.If you are not intended in vehicle-mounted GPS navigator
This puts into too many money above, it is proposed that following several vehicle-mounted GPS navigator schemes are used, it is convenient and practical.
However, by the way that one or two of interface is only arranged on existing navigation module, also, in existing vehicle mounted guidance module
SD card can not be connected, so that reducing the extension function of navigation module, reduces the practicability of navigation module, it has not been convenient to user
Use can not directly be upgraded using SD card when navigation module needs to carry out upgrade-system, be unfavorable for user
Operation, reduce the convenience of user's operation, can not achieve the diversified function of navigation module；Also, existing navigation
The interface of module is less, when needing grafting multiple external equipments, it may appear that the insufficient problem in grafting port, so that existing
Navigation module extended capability it is low, be unfavorable for the use of user.
Utility model content
The purpose of the utility model is to overcome shortcomings in the prior art, provide a kind of multiplex roles formula navigation module,
By be arranged SD card power supply circuit, can make navigation module be SD card power, and can make navigation module and SD card into
Row connection, improves the extension function of navigation module, improves the practicability of navigation module, be convenient for the user to use, work as navigation
When module needs to carry out upgrade-system, it can directly be upgraded using SD card, user is facilitated to operate, improve use
The convenience of family operation, realizes the diversified function of navigation module；Meanwhile by the way that multiple interface electricity are arranged on navigation module
Road can provide multiple connecting interfaces, avoid the occurrence of the insufficient problem in grafting port, improve the extended capability of navigation module, into
One step is convenient for the user to use.
The purpose of this utility model is achieved through the following technical solutions:
A kind of multiplex roles formula navigation module, comprising: main control chip, SD card power supply circuit and interface circuit, the master control core
Piece is electrically connected with the SD card power supply circuit and the interface circuit respectively；
The SD card power supply circuit includes current limiting unit, voltage regulation unit, the first filter unit and the second filter unit, described
The input terminal of current limiting unit is electrically connected with the control output pin of the main control chip, the output end of the current limiting unit with it is described
The input terminal of voltage regulation unit is electrically connected, and the output end of the voltage regulation unit is electrically connected with the input terminal of first filter unit,
The output end of first filter unit is electrically connected with the input terminal of second filter unit, second filter unit it is defeated
Outlet is used to be electrically connected with external SD card inserted terminal；
The interface circuit includes direct grafting port, pull-up resistor, impedance matching resistor and indirect grafting port, described
Direct grafting port is electrically connected with the first pin of the main control chip, one end of the pull-up resistor and the main control chip
The electrical connection of second pin, the other end of the pull-up resistor are electrically connected with the impedance matching resistor, the impedance matching resistor
Also it is electrically connected with the indirect grafting port.
The current limiting unit includes resistance R82 in one of the embodiments, one end of the resistance R82 and the master
The GPS_PWR_CTL pin electrical connection of chip is controlled, the input terminal of the other end and the voltage regulation unit of the resistance R82 is electrically connected
It connects.
The voltage regulation unit uses the voltage stabilizing chip of model ATL2636-33 in one of the embodiments,.
First filter unit includes multiple capacitors being connected in parallel in one of the embodiments,.
Second filter unit is RC filter unit in one of the embodiments,.
Second filter unit includes resistance R15 and capacitor C62 in one of the embodiments, the resistance R15's
First end is electrically connected with the output end of first filter unit, and the first of the second end of the resistance R15 and the capacitor C62
End electrical connection, the second end ground connection of the capacitor C62, the first end of the capacitor C62 are also used to the feeder ear as SD card.
The direct grafting port is provided with multiple in one of the embodiments, each direct grafting port difference
It is electrically connected with the main control chip.
The interface circuit includes multiple pull-up resistors, multiple impedance matching resistors and more in one of the embodiments,
A indirect grafting port, each pull-up resistor and an impedance matching resistor and an indirect grafting port electricity
Connection.
The main control chip uses the chip of model ARK1668_BGA352 in one of the embodiments,.
The SD card power supply circuit further includes input filter capacitor C117 in one of the embodiments, the input filter
One end of wave capacitor C117 is used to be electrically connected with external 5V input voltage, the other end of the input filter capacitor C117 and institute
State voltage regulation unit electrical connection.
The utility model compared with the prior art the advantages of and have the beneficial effect that:
The utility model is a kind of multiplex roles formula navigation module, by the way that SD card power supply circuit is arranged, can make the mould that navigates
Block is SD card power supply, and can navigation module is attached with SD card, improves the extension function of navigation module, is improved
The practicability of navigation module, is convenient for the user to use, when navigation module needs to carry out upgrade-system, can directly make
Upgraded with SD card, user is facilitated to operate, improve the convenience of user's operation, realizes the diversified of navigation module
Function；Meanwhile by the way that multiple interface circuits are arranged on navigation module, multiple connecting interfaces can be provided, grafting is avoided the occurrence of
The problem of port deficiency, improves the extended capability of navigation module, further facilitates the use of user.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the circuit diagram of the SD card power supply circuit of one embodiment of the utility model；
Fig. 2 is the circuit diagram of the second filter unit of SD card power supply circuit shown in FIG. 1；
Fig. 3 is the circuit diagram of the interface circuit of one embodiment of the utility model；
Fig. 4 is the circuit diagram of the main control chip of the utility model.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The better embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiments described herein.On the contrary, the purpose of providing these embodiments is that making practical new to this
The disclosure of type understands more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein packet
Include any and all combinations of one or more related listed items.
Referring to Fig. 1, a kind of multiplex roles formula navigation module, comprising: main control chip, SD card power supply circuit and interface circuit,
The main control chip is electrically connected with the SD card power supply circuit and the interface circuit respectively.It should be noted that the master control
Chip is the control chip of navigation module, for receiving and handling positioning signal；The SD card power supply circuit be used for for SD card into
Row power supply；The interface circuit provides the adaptation ability of navigation module for realizing the access of multiple interfaces, provides and more connects
Connect port.
Also referring to Fig. 1 and Fig. 2, the SD card power supply circuit includes current limiting unit, voltage regulation unit, the first filter unit
And second filter unit, the input terminal of the current limiting unit are electrically connected with the control output pin of the main control chip, the limit
The output end of stream unit is electrically connected with the input terminal of the voltage regulation unit, the output end of the voltage regulation unit and first filtering
The input terminal of unit is electrically connected, and the output end of first filter unit is electrically connected with the input terminal of second filter unit,
The output end of second filter unit is used to be electrically connected with external SD card inserted terminal.
Referring to Fig. 3, the interface circuit includes direct grafting port, pull-up resistor, impedance matching resistor and patches
Port is connect, the direct grafting port is electrically connected with the first pin of the main control chip, one end of the pull-up resistor and institute
The second pin electrical connection of main control chip is stated, the other end of the pull-up resistor is electrically connected with the impedance matching resistor, described
Impedance matching resistor is also electrically connected with the indirect grafting port.
When work, the main control chip output control signal enters in voltage regulation unit after the current limiting unit, makes
Voltage regulation unit is obtained to start to work, then the ARM_5V voltage of input is converted to the output voltage of 3.3V by voltage regulation unit, so as to
It, can be embodied as the voltage of SD card interface power supply, also, after the filter action for passing through the first filter unit and the second filter unit
To provide more stable supply voltage for SD card interface；Also, multiple grafting ports, Ke Yilian are provided in the interface circuit
Multiple external equipments are connect, so as to provide multiple connecting interfaces, avoid the occurrence of the insufficient problem in grafting port, improve navigation mould
The extended capability of block further facilitates the use of user.
It should be noted that the current limiting unit includes resistance R82, one end of the resistance R82 and the main control chip
The electrical connection of GPS_PWR_CTL pin, the other end of the resistance R82 is electrically connected with the input terminal of the voltage regulation unit.Pass through
Resistance R82 is set, the effect of current limliting may be implemented, guarantees that the electric current being input in voltage regulation unit is not too big, improves pressure stabilizing list
The stability of the work of member.Preferably, the voltage regulation unit uses the voltage stabilizing chip of model ATL2636-33.
It should be noted that first filter unit includes multiple capacitors being connected in parallel.The capacitor packet wherein connected
Include the capacitor C116 being connected in parallel, capacitor C110, capacitor C111, capacitor C112, capacitor C78 and capacitor C84.So as to realize
The filtering of multiple and different frequencies.
It should be noted that second filter unit is RC filter unit.Preferably, second filter unit includes
Resistance R15 and capacitor C62, the first end of the resistance R15 are electrically connected with the output end of first filter unit, the resistance
The second end of R15 is electrically connected with the first end of the capacitor C62, the second end ground connection of the capacitor C62, the capacitor C62's
First end is also used to the feeder ear as SD card.
It should be noted that the direct grafting port be provided with it is multiple, each direct grafting port respectively with it is described
Main control chip electrical connection.Specifically, the interface circuit include multiple pull-up resistors, multiple impedance matching resistors and it is multiple indirectly
Grafting port, each pull-up resistor are electrically connected with the indirect grafting port of an impedance matching resistor and one.
It should also be noted that, referring to Fig. 4, the main control chip uses the chip of model ARK1668_BGA352.Wherein, described
Pull-up resistor includes resistance R30, resistance R31, resistance R32, resistance R74, resistance R75, resistance R76 and resistance R19.The impedance
Build-out resistor include resistance R5, resistance R16, resistance R17, resistance R22, resistance R23, resistance R18, resistance R67, resistance R24 and
Resistance R29.
In one embodiment, the SD card power supply circuit further includes input filter capacitor C117, the input filter
One end of capacitor C117 is used to be electrically connected with external 5V input voltage, the other end of the input filter capacitor C117 with it is described
Voltage regulation unit electrical connection.In this way, the ripple of input voltage can be filtered out.
The utility model compared with the prior art the advantages of and have the beneficial effect that:
The utility model is a kind of multiplex roles formula navigation module, by the way that SD card power supply circuit is arranged, can make the mould that navigates
Block is SD card power supply, and can navigation module is attached with SD card, improves the extension function of navigation module, is improved
The practicability of navigation module, is convenient for the user to use, when navigation module needs to carry out upgrade-system, can directly make
Upgraded with SD card, user is facilitated to operate, improve the convenience of user's operation, realizes the diversified of navigation module
Function；Meanwhile by the way that multiple interface circuits are arranged on navigation module, multiple connecting interfaces can be provided, grafting is avoided the occurrence of
The problem of port deficiency, improves the extended capability of navigation module, further facilitates the use of user.
Embodiment described above only expresses the several embodiments of the utility model, and description is more specific and detailed
Carefully, but it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the general of this field
For logical technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these are all
Belong to the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of multiplex roles formula navigation module characterized by comprising main control chip, SD card power supply circuit and interface circuit, institute
Main control chip is stated to be electrically connected with the SD card power supply circuit and the interface circuit respectively；
The SD card power supply circuit includes current limiting unit, voltage regulation unit, the first filter unit and the second filter unit, the current limliting
The input terminal of unit is electrically connected with the control output pin of the main control chip, the output end of the current limiting unit and the pressure stabilizing
The input terminal of unit is electrically connected, and the output end of the voltage regulation unit is electrically connected with the input terminal of first filter unit, described
The output end of first filter unit is electrically connected with the input terminal of second filter unit, the output end of second filter unit
For being electrically connected with external SD card inserted terminal；
The interface circuit includes direct grafting port, pull-up resistor, impedance matching resistor and indirect grafting port, it is described directly
Grafting port is electrically connected with the first pin of the main control chip, one end of the pull-up resistor and the second of the main control chip
Pin electrical connection, the other end of the pull-up resistor is electrically connected with the impedance matching resistor, the impedance matching resistor also with
The indirect grafting port electrical connection.
2. multiplex roles formula navigation module according to claim 1, which is characterized in that the current limiting unit includes resistance R82,
One end of the resistance R82 is electrically connected with the GPS_PWR_CTL pin of the main control chip, the other end of the resistance R82 with
The input terminal of the voltage regulation unit is electrically connected.
3. multiplex roles formula navigation module according to claim 1, which is characterized in that the voltage regulation unit uses model
The voltage stabilizing chip of ATL2636-33.
4. multiplex roles formula navigation module according to claim 1, which is characterized in that first filter unit includes multiple
The capacitor being connected in parallel.
5. multiplex roles formula navigation module according to claim 1, which is characterized in that second filter unit is RC filtering
Unit.
6. multiplex roles formula navigation module according to claim 5, which is characterized in that second filter unit includes resistance
R15 and capacitor C62, the first end of the resistance R15 are electrically connected with the output end of first filter unit, the resistance R15
Second end be electrically connected with the first end of the capacitor C62, the second end of capacitor C62 ground connection, the first of the capacitor C62
End is also used to the feeder ear as SD card.
7. multiplex roles formula navigation module according to claim 1, which is characterized in that the direct grafting port is provided with more
A, each direct grafting port is electrically connected with the main control chip respectively.
8. multiplex roles formula navigation module according to claim 1, which is characterized in that the interface circuit includes multiple pull-up
Resistance, multiple impedance matching resistors and multiple indirect grafting ports, each pull-up resistor and an impedance matching electricity
Resistance and an indirect grafting port electrical connection.
9. multiplex roles formula navigation module according to claim 1, which is characterized in that the main control chip uses model
The chip of ARK1668_BGA352.
10. multiplex roles formula navigation module according to claim 1, which is characterized in that the SD card power supply circuit further includes
One end of input filter capacitor C117, the input filter capacitor C117 are used to be electrically connected with external 5V input voltage, described
The other end of input filter capacitor C117 is electrically connected with the voltage regulation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821747739.9U CN209342921U (en) | 2018-10-26 | 2018-10-26 | Multiplex roles formula navigation module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821747739.9U CN209342921U (en) | 2018-10-26 | 2018-10-26 | Multiplex roles formula navigation module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209342921U true CN209342921U (en) | 2019-09-03 |
Family
ID=67746797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821747739.9U Active CN209342921U (en) | 2018-10-26 | 2018-10-26 | Multiplex roles formula navigation module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209342921U (en) |
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2018
- 2018-10-26 CN CN201821747739.9U patent/CN209342921U/en active Active
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