CN208978566U - A kind of power circuit for direct-type monitoring automobile tyre pressure - Google Patents
A kind of power circuit for direct-type monitoring automobile tyre pressure Download PDFInfo
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- CN208978566U CN208978566U CN201821805801.5U CN201821805801U CN208978566U CN 208978566 U CN208978566 U CN 208978566U CN 201821805801 U CN201821805801 U CN 201821805801U CN 208978566 U CN208978566 U CN 208978566U
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Abstract
The utility model discloses a kind of power circuits for direct-type monitoring automobile tyre pressure, including the first output module of power supply, the first output module of power supply includes voltage chips U3, the voltage input end VIN of the voltage chips U3 emitter with triode Q1 respectively, the first end of resistance R5 is connected with the anode of lithium battery, the cathode of lithium battery is connected with power ground, the second end of resistance R5 is connected with the collector of the first end of resistance R7 and triode Q1 respectively, the second end of resistance R7 is connected with the enable end EN of voltage chips U3, the base stage of triode Q1 is connected with the first end of resistance R6, the second end of resistance R6 is connected with power ground, the ground terminal GND of voltage chips U3 is connected with power ground.The utility model is exported the stable supply voltage that the supply voltage that lithium battery exports is converted into 3.3V by voltage chips U3, is powered for tire pressure receiver；And using big capacitance and little Rong capacitor with the use of raising power supply anti-interference in power source path.
Description
Technical field
The utility model relates to a kind of power circuit technical fields, are used for direct-type automotive wheels tire pressure more particularly to one kind
The power circuit of power monitoring.
Background technique
China's car owning amount increases severely, and a large amount of automobiles swarm road surface, in addition vehicle running surface is complicated, lead to traffic accident
It takes place frequently, therefore, it is necessary to which the tire pressure to vehicle is monitored, prevents from tire gas leakage or blow out to cause traffic accident.Vehicle tire pressure
Receiver needs power supply power supply, and existing power supply output is unstable, is not able to satisfy the power input performance of tire pressure receiver.
Utility model content
The utility model aims to solve at least the technical problems existing in the prior art, especially innovatively proposes a kind of use
In the power circuit of direct-type monitoring automobile tyre pressure.
In order to realize the above-mentioned purpose of the utility model, the utility model discloses one kind to be used for direct-type automotive wheels tire pressure
The power circuit of power monitoring, including the first output module of power supply, the first output module of power supply include voltage chips U3, voltage chips
The voltage input end VIN of U3 is connected with the anode of the emitter of triode Q1, the first end of resistance R5 and lithium battery respectively, lithium electricity
The cathode in pond is connected with power ground, the second end of the resistance R5 collector phase with the first end of resistance R7 and triode Q1 respectively
Even, the second end of resistance R7 is connected with the enable end EN of voltage chips U3, the base stage and the first end phase of resistance R6 of triode Q1
Even, the second end of resistance R6 is connected with power ground, and the ground terminal GND of voltage chips U3 is connected with power ground, voltage chips U3's
Voltage output end OUT is connected with the first end of the first end of capacitor C5 and capacitor C6 respectively, the second end and capacitor C6 of capacitor C5
Second end be connected respectively with power ground.The supply voltage that lithium battery exports is converted into the stabilization of 3.3V by voltage chips U3
Supply voltage output, for tire pressure receiver power；And it is used cooperatively in power source path using big capacitance and little Rong capacitor
Improve power supply anti-interference.
It further include Power Entry Module in a kind of preferred embodiment of the utility model, the Power Entry Module
Including lithium battery charge management module, the lithium battery charge management module includes voltage chips U2, the charging of voltage chips U2
State instruction end CHRG is connected with the cathode of light emitting diode D1, the first end phase of the anode and resistance R1 of light emitting diode D1
Even, the second end of resistance R1 respectively with the first end of capacitor C1, the first end of capacitor C2, voltage chips U2 power voltage terminal
VCC is connected with the power output end of power source charges module, the second end of the second end of capacitor C1 and capacitor C2 respectively with power ground
It is connected, the charging current output end BAT of voltage chips U2 is connected with the first end of resistance R3, the second end and lithium electronics of resistance R3
Anode be connected, the ground terminal GND of voltage chips U2 is connected with the cathode of lithium battery, the charging current of voltage chips U2 setting end
PROG is connected with the first end of resistance R4, and the second end of resistance R4 is connected with power ground.By voltage chips U2 by external input
Supply voltage be converted to lithium battery be adapted lithium battery charging voltage or supply voltage；When voltage chips U2 work,
Light emitting diode D1 is lighted, and account for voltage chip U2 is being lithium battery charging or power supply.
In a kind of preferred embodiment of the utility model, power source charges module includes solar energy module, solar energy mould
Block includes the positive power voltage terminal VCC phase with the first end of capacitor C4 and voltage chips U2 respectively of solar panel SOL1
Even, the cathode of solar panel SOL1 and the second end of capacitor C4 are connected with power ground respectively.Using solar panel into
Row charges at a slow speed, and energy automatic charging, efficient and convenient as long as the place for having light.
It further include diode D3, the anode and the sun of diode D3 in a kind of preferred embodiment of the utility model
The anode of energy solar panel SOL1 is connected, and the cathode of diode D3 is connected with the power voltage terminal VCC of voltage chips U2.Diode D3
The supply voltage for being beneficial to prevent USB interface output forms perfusion to the voltage that solar panel exports.
In a kind of preferred embodiment of the utility model, power source charges module includes USB interface USB1, USB interface
The power voltage terminal VCC of the positive VBUS and voltage chips U2 of USB1 are connected, cathode GND and the power ground phase of USB interface USB1
Even.By the inside input power of USB interface, quickly charge for lithium battery；Quickly and efficiently.
It further include diode D2 in a kind of preferred embodiment of the utility model, the anode of diode D2 connects with USB
The positive VBUS of mouth USB1 is connected, and the cathode of diode D2 is connected with the power voltage terminal VCC of voltage chips U3.Diode D2 has
Conducive to the voltage formation perfusion for preventing the supply voltage of electric sun energy solar panel output from exporting to USB interface.
It further include temperature detect switch (TDS) Switch1, temperature detect switch (TDS) in a kind of preferred embodiment of the utility model
The first end of Switch1 is connected with the cathode of diode D2, the second end of temperature detect switch (TDS) Switch1 and the power supply of voltage chips U2
Voltage end VCC is connected.Temperature detect switch (TDS) Switch1 is beneficial to prevent that lasting input current is excessively high to cause temperature is excessively high to burn out voltage core
Piece U2, i.e., when the temperature is excessively high, temperature detect switch (TDS) Switch1 are disconnected automatically.
In a kind of preferred embodiment of the utility model, the model of voltage chips U3
SPX3819M5-L-3.3/TR。
In a kind of preferred embodiment of the utility model, the model TP4065 of voltage chips U2.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are: the utility model can
The supply voltage of lithium battery is converted to the output of stablizing of 3.3V, and there is the charging circuit of the charging to lithium battery.
Detailed description of the invention
Fig. 1 is the connection signal block diagram of the utility model.
Fig. 2 is the circuit connection diagram of the utility model.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
The utility model discloses a kind of power circuits for direct-type monitoring automobile tyre pressure, such as Fig. 1 and 2 institute
Show, including the first output module of power supply, the first output module of power supply includes voltage chips U3, the voltage input end of voltage chips U3
VIN is connected with the anode of the emitter of triode Q1, the first end of resistance R5 and lithium battery respectively, the cathode and power supply of lithium battery
Ground is connected, and the second end of resistance R5 is connected with the collector of the first end of resistance R7 and triode Q1 respectively, and the second of resistance R7
End is connected with the enable end EN of voltage chips U3, and the base stage of triode Q1 is connected with the first end of resistance R6, and the second of resistance R6
End is connected with power ground, and the ground terminal GND of voltage chips U3 is connected with power ground, and voltage output end OUT points of voltage chips U3
Be not connected with the first end of the first end of capacitor C5 and capacitor C6, the second end of the second end of capacitor C5 and capacitor C6 respectively with electricity
Source it is connected.In the present embodiment, the model SPX3819M5-L-3.3/TR of voltage chips U3, the model of triode Q1
The resistance value of L8550HQLT1G, resistance R6 are 1K ± 1%, and the resistance value of resistance R7 is 4.7K ± 1%, and the capacitance of capacitor C5 is 10uF
The capacitance of ± 20%, capacitor C6 are 100nF ± 5%, and the resistance value of resistance R5 can be determined according to the actual situation, preferably take
4.7K ± 1%.
It further include Power Entry Module in a kind of preferred embodiment of the utility model, the Power Entry Module
Including lithium battery charge management module, the lithium battery charge management module includes voltage chips U2, the charging of voltage chips U2
State instruction end CHRG is connected with the cathode of light emitting diode D1, the first end phase of the anode and resistance R1 of light emitting diode D1
Even, the second end of resistance R1 respectively with the first end of capacitor C1, the first end of capacitor C2, voltage chips U2 power voltage terminal
VCC is connected with the power output end of power source charges module, the second end of the second end of capacitor C1 and capacitor C2 respectively with power ground
It is connected, the charging current output end BAT of voltage chips U2 is connected with the first end of resistance R3, the second end and lithium electronics of resistance R3
Anode be connected, the ground terminal GND of voltage chips U2 is connected with the cathode of lithium battery, the charging current of voltage chips U2 setting end
PROG is connected with the first end of resistance R4, and the second end of resistance R4 is connected with power ground.In the present embodiment, voltage chips U2
Model TP4065, the resistance value of resistance R1 is 4.7K ± 1%, and the resistance value of resistance R3 is 0 Ω ± 5%, and the resistance value of resistance R4 is
4.7K ± 1%, the capacitance of capacitor C1 are 10uF ± 20%, and the capacitance of capacitor C2 is 100nF ± 5%, and light emitting diode D1 is issued
Feux rouges or other types of color.
In a kind of preferred embodiment of the utility model, power source charges module includes solar energy module, solar energy mould
Block includes the positive power voltage terminal VCC phase with the first end of capacitor C4 and voltage chips U2 respectively of solar panel SOL1
Even, the cathode of solar panel SOL1 and the second end of capacitor C4 are connected with power ground respectively.
It further include diode D3, the anode and the sun of diode D3 in a kind of preferred embodiment of the utility model
The anode of energy solar panel SOL1 is connected, and the cathode of diode D3 is connected with the power voltage terminal VCC of voltage chips U2.In this implementation
In mode, the capacitance of the model LMBR0520T1G of diode D3, capacitor C4 are 100nF ± 5%；The capacitance of capacitor C3 is
22pF ± 5%, the resistance value of resistance R2 are 0 Ω ± 5%.
In a kind of preferred embodiment of the utility model, power source charges module includes USB interface USB1, USB interface
The power voltage terminal VCC of the positive VBUS and voltage chips U2 of USB1 are connected, cathode GND and the power ground phase of USB interface USB1
Even.
It further include diode D2 in a kind of preferred embodiment of the utility model, the anode of diode D2 connects with USB
The positive VBUS of mouth USB1 is connected, and the cathode of diode D2 is connected with the power voltage terminal VCC of voltage chips U3.
It further include temperature detect switch (TDS) Switch1, temperature detect switch (TDS) in a kind of preferred embodiment of the utility model
The first end of Switch1 is connected with the cathode of diode D2, the second end of temperature detect switch (TDS) Switch1 and the power supply of voltage chips U2
Voltage end VCC is connected.In the present embodiment, the model LMBR0520T1G of diode D2, the type of temperature detect switch (TDS) Switch1
Number be BW-B2D.
It in the present embodiment, further include solar recharging detection module, solar recharging detection module includes resistance
The first end of R11, resistance R12, resistance R17 and capacitor C14, resistance R11 are connected with the anode of diode D3, and the of resistance R11
Two ends are connected with the first end of the first end of resistance R12 and resistance R17 respectively, and the second end of resistance R17 is connected with power ground, electricity
The second end of resistance R12 is connected with the solar recharging detection input of the first end of capacitor C14 and controller respectively, capacitor C14
Second end be connected with power ground.In the present embodiment, the resistance value of resistance R11 is 2M ± 1%, and the resistance value of resistance R12 is 1K
The resistance value of ± 1%, resistance R17 are 2M ± 1%, and the capacitance of capacitor C14 is 100nF ± 5%, the model of controller
STM8L151.Solar recharging detection module is for detecting whether there is solar recharging.
It further include USB charging detecting model, USB charging detecting model includes resistance R15, resistance R16, resistance R19 and electricity
Hold C16, the first end of resistance R15 is connected with the positive VBUS of USB interface USB1, the second end of resistance R15 respectively with resistance R16
First end be connected with the first end of resistance R19, the second end of resistance R19 is connected with power ground, the second end of resistance R16 difference
It is connected with the USB of the first end of capacitor C16 and controller charging detection input, the second end of capacitor C16 is connected with power ground.
In the present embodiment, the resistance value of resistance R15 is 2M ± 1%, and the resistance value of resistance R16 is 1K ± 1%, and the resistance value of resistance R19 is
2M ± 1%, the capacitance of capacitor C16 are 100nF ± 5%.USB charging detecting model is for detecting whether there is USB charging.
It further include lithium battery electric power detection module, lithium battery electric power detection module includes resistance R13, resistance
R14, resistance R18 and capacitor C15, the first end of resistance R13 are connected with the anode of lithium battery, the second end of resistance R13 respectively with
The first end of resistance R14 is connected with the first end of resistance R18, and the second end of resistance R18 is connected with power ground, and the of resistance R14
Two ends are connected with the electric quantity of lithium battery detection input of the first end of capacitor C15 and controller respectively, the second end of capacitor C15 with
Power ground is connected.In the present embodiment, the resistance value of resistance R13 is 2M ± 1%, and the resistance value of resistance R14 is 1K ± 1%, resistance
The resistance value of R18 is 2M ± 1%, and the capacitance of capacitor C15 is 100nF ± 5%.Lithium battery electric power detection module is for detecting lithium
Battery dump energy.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that:
These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective
And modification, the scope of the utility model are defined by the claims and their equivalents.
Claims (9)
1. a kind of power circuit for direct-type monitoring automobile tyre pressure, which is characterized in that including power supply output module, electricity
Source output module includes voltage chips U3, the voltage input end VIN of voltage chips U3 respectively with the emitter of triode Q1, resistance
The first end of R5 is connected with the anode of lithium battery, and the cathode of lithium battery is connected with power ground, the second end of resistance R5 respectively with electricity
The first end of resistance R7 is connected with the collector of triode Q1, and the second end of resistance R7 is connected with the enable end EN of voltage chips U3,
The base stage of triode Q1 is connected with the first end of resistance R6, and the second end of resistance R6 is connected with power ground, and voltage chips U3's connects
Ground terminal GND is connected with power ground, the voltage output end OUT of voltage chips U3 respectively with the first end of capacitor C5 and capacitor C6
One end is connected, and the second end of capacitor C5 and the second end of capacitor C6 are connected with power ground respectively.
2. the power circuit according to claim 1 for direct-type monitoring automobile tyre pressure, which is characterized in that also wrap
Power Entry Module is included, the Power Entry Module includes lithium battery charge management module, the lithium battery charge management module
Including voltage chips U2, the charged state indication end CHRG of voltage chips U2 is connected with the cathode of light emitting diode D1, and luminous two
The anode of pole pipe D1 is connected with the first end of resistance R1, the second end of resistance R1 respectively with the first end of capacitor C1, capacitor C2
First end, voltage chips U2 power voltage terminal VCC be connected with the power output end of power source charges module, the second end of capacitor C1
It is connected respectively with power ground with the second end of capacitor C2, the first of the charging current output end BAT and resistance R3 of voltage chips U2
End is connected, and the second end of resistance R3 is connected with the anode of lithium electronics, the cathode phase of the ground terminal GND and lithium battery of voltage chips U2
Even, the charging current setting end PROG of voltage chips U2 is connected with the first end of resistance R4, the second end and power ground of resistance R4
It is connected.
3. the power circuit according to claim 2 for direct-type monitoring automobile tyre pressure, which is characterized in that power supply
Charging module includes solar energy module, solar energy module include solar panel SOL1 anode respectively with capacitor C4 first
End is connected with the power voltage terminal VCC of voltage chips U2, the cathode of solar panel SOL1 and the second end difference of capacitor C4
It is connected with power ground.
4. the power circuit according to claim 3 for direct-type monitoring automobile tyre pressure, which is characterized in that also wrap
Diode D3 is included, the anode of diode D3 is connected with the anode of solar panel SOL1, the cathode and voltage core of diode D3
The power voltage terminal VCC of piece U2 is connected.
5. the power circuit according to claim 2 for direct-type monitoring automobile tyre pressure, which is characterized in that power supply
Charging module includes USB interface USB1, and the power voltage terminal VCC of the positive VBUS and voltage chips U2 of USB interface USB1 are connected,
The cathode GND of USB interface USB1 is connected with power ground.
6. the power circuit according to claim 5 for direct-type monitoring automobile tyre pressure, which is characterized in that also wrap
Diode D2 is included, the anode of diode D2 is connected with the positive VBUS of USB interface USB1, the cathode and voltage chips of diode D2
The power voltage terminal VCC of U3 is connected.
7. the power circuit according to claim 6 for direct-type monitoring automobile tyre pressure, which is characterized in that also wrap
Temperature detect switch (TDS) Switch1 is included, the first end of temperature detect switch (TDS) Switch1 is connected with the cathode of diode D2, temperature detect switch (TDS) Switch1
Second end be connected with the power voltage terminal VCC of voltage chips U2.
8. the power circuit according to claim 1 for direct-type monitoring automobile tyre pressure, the type of voltage chips U3
Number be SPX3819M5-L-3.3/TR.
9. the power circuit according to claim 6 for direct-type monitoring automobile tyre pressure, the type of voltage chips U2
Number be TP4065.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821805801.5U CN208978566U (en) | 2018-11-02 | 2018-11-02 | A kind of power circuit for direct-type monitoring automobile tyre pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821805801.5U CN208978566U (en) | 2018-11-02 | 2018-11-02 | A kind of power circuit for direct-type monitoring automobile tyre pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208978566U true CN208978566U (en) | 2019-06-14 |
Family
ID=66790194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821805801.5U Active CN208978566U (en) | 2018-11-02 | 2018-11-02 | A kind of power circuit for direct-type monitoring automobile tyre pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208978566U (en) |
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2018
- 2018-11-02 CN CN201821805801.5U patent/CN208978566U/en active Active
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