CN209079562U - A kind of direct-type automobile tire pressure monitoring system - Google Patents

A kind of direct-type automobile tire pressure monitoring system Download PDF

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Publication number
CN209079562U
CN209079562U CN201821802095.9U CN201821802095U CN209079562U CN 209079562 U CN209079562 U CN 209079562U CN 201821802095 U CN201821802095 U CN 201821802095U CN 209079562 U CN209079562 U CN 209079562U
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resistance
capacitor
module
power
controller
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吴限
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Chongqing Dongneng Science And Technology Co Ltd
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Chongqing Dongneng Science And Technology Co Ltd
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Abstract

The utility model discloses a kind of direct-type automobile tire pressure monitoring systems, including automobile tyre pressure check wireless sending module, wireless receiving module, controller, power module, display module or/and alarm module；The vehicle tire pressure that automobile tyre pressure check wireless sending module will test acquisition is sent to wireless receiving module, the data terminal of wireless receiving module is connected with the wireless data end of controller, the display output end of controller is connected with the display input terminal of display module, the warning output end of controller is connected with the alarm input terminal of alarm module, and power module is respectively controller, wireless receiving module, display module and alarm module power supply.The utility model can moment wireless monitor automobile tire, and issue alarm when something goes wrong in tire pressure and tyre temperature, driver prompted to pay attention to tire state.

Description

A kind of direct-type automobile tire pressure monitoring system
Technical field
The utility model relates to a kind of automobile tire monitoring technical fields, more particularly to a kind of direct-type automotive wheels tire pressure Power monitors system.
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.It is transported with tire Row it is performance-relevant because being known as tire pressure, temperature, tire chafing degree, vehicle load, traveling road conditions etc. in tire, wherein tire The influence of pressure is maximum, and the performance that can estimate well, predict tire is detected to tire pressure, and prevention traffic accident generates.It is existing In technology measure tire pressure be that controller is transferred data to by wire form, the wiring of this mode it is cumbersome, influence letter Number transmitting is unstable, easily causes the interference of signal.
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 straight Connect formula automobile tire pressure monitoring system.
In order to realize the above-mentioned purpose of the utility model, the utility model discloses a kind of direct-type automotive tire pressure prisons Examining system, including automobile tyre pressure check wireless sending module, wireless receiving module, controller, power module, display module or/ And alarm module；
The vehicle tire pressure that automobile tyre pressure check wireless sending module will test acquisition is sent to wireless receiving module, wirelessly connects The data terminal for receiving module is connected with the wireless data end of controller, and the display of the display output end and display module of controller inputs End be connected, the warning output end of controller is connected with the alarm input terminal of alarm module, power module be respectively controller, wirelessly Receiving module, display module and alarm module power supply.The utility model can moment wireless monitor automobile tire, and in tire Pressure and tyre temperature issue alarm when something goes wrong, and driver is prompted to pay attention to tire state.
In a kind of preferred embodiment of the utility model, the power module includes that lithium battery and power supply first export The anode of module, the lithium battery is connected with the anode of the first output module of power supply, the cathode and power supply first of the lithium battery The cathode of output module is connected；
First output module of power supply includes voltage chips U3, and the voltage input end VIN of voltage chips U3 is respectively with three The emitter of pole pipe Q1, the first end of resistance R5 are connected with the anode of lithium battery, and the cathode of lithium battery is connected with power ground, resistance The second end of R5 is connected with the collector of the first end of resistance R7 and triode Q1 respectively, the second end and voltage chips of resistance R7 The enable end EN of U3 is connected, and the base stage of triode Q1 is connected with the first end of resistance R6, second end and the power ground phase of resistance R6 Even, the ground terminal GND of voltage chips U3 is connected with power ground, and the voltage output end OUT of voltage chips U3 is respectively with capacitor C5's First end is connected with the first end of capacitor C6, and the second end of capacitor C5 and the second end of capacitor C6 are connected with power ground respectively.It is logical Overvoltage chip U3 exports the supply voltage that the supply voltage that lithium battery exports is converted into 3.3V, is controller, wireless receiving Module, display module and alarm module power supply；The output voltage stability of voltage chips U3 can be good, and adopts in power source path With big capacitance and low-capacitance capacitor with the use of raising power supply anti-interference.
It further include lithium battery charge management module, the lithium battery in a kind of preferred embodiment of the utility model The positive terminal of charge management module is connected with the anode of lithium battery, the negative pole end and lithium battery of the lithium battery charge management module Cathode be connected；
The lithium battery charge management module includes voltage chips U2, the charged state indication end CHRG of voltage chips U2 with The cathode of light emitting diode D1 is connected, and the anode of light emitting diode D1 is connected with the first end of resistance R1, the second end of resistance R1 Respectively with the first end of capacitor C1, the first end of capacitor C2, the power voltage terminal VCC of voltage chips U2 and Power Entry Module Power output end is connected, and the second end of capacitor C1 and the second end of capacitor C2 are connected with power ground respectively, and voltage chips U2's fills Electric current output terminal BAT is connected with the first end of resistance R3, and the second end of resistance R3 is connected with the anode of lithium electronics, voltage chips The ground terminal GND of U2 is connected with power ground, and the charging current setting end PROG of voltage chips U2 is connected with the first end of resistance R4, The second end of resistance R4 is connected with power ground.Externally input supply voltage is converted to and lithium battery phase by voltage chips U2 The lithium battery charging voltage or supply voltage of adaptation；When voltage chips U2 work, light emitting diode D1 is lighted, account for voltage core Piece U2 is being lithium battery charging or power supply.
In a kind of preferred embodiment of the utility model, Power Entry Module includes USB interface USB1 or/and the sun It can module；The power output end of USB interface USB1 is connected with the power input of lithium battery charge management module, solar energy module Power output end be connected with the power input of lithium battery charge management module；
The positive VBUS of USB interface USB1 is connected with the anode of diode D2, the cathode GND and power supply of USB interface USB1 Ground is connected, and the cathode of diode D2 is connected with the first end of temperature detect switch (TDS) Switch1, the second end of temperature detect switch (TDS) Switch1 with The power voltage terminal VCC of voltage chips U3 is connected；By the inside input power of USB interface, quickly charge for lithium battery；Wherein two The supply voltage that pole pipe D2 is beneficial to prevent solar panel output forms perfusion to the voltage that USB interface exports, in addition warm Control switch Switch1 is beneficial to prevent that lasting input current is excessively high to cause temperature is excessively high to burn out voltage chips U2, i.e., when temperature mistake Gao Shi, temperature detect switch (TDS) Switch1 are disconnected automatically.
Solar energy module include solar panel SOL1 anode respectively with the first end of capacitor C4 and diode D3 Anode is connected, and the cathode of solar panel SOL1 and the second end of capacitor C4 are connected with power ground respectively, and diode D3's is negative Pole is connected with the first end of temperature detect switch (TDS) Switch1.It is charged at a slow speed using good solar panel, as long as there is light Local energy automatic charging, wherein the supply voltage that diode D3 is beneficial to prevent USB interface output is defeated to solar panel Voltage out forms perfusion.
It further include interface modular converter, the electricity of interface modular converter in a kind of preferred embodiment of the utility model Source input terminal is connected with the power output end of USB interface, the usb signal end of interface modular converter and the data terminal phase of USB interface Even, the data terminal of interface modular converter is connected with the interface data end of controller；
Interface modular converter includes interface chip U7, and the first of the USB positive signal end UD+ and resistance R23 of interface chip U7 End be connected, the second end of resistance R23 is connected with the positive signal end D+ of USB interface, the USB negative signal end UD- of interface chip U7 and The first end of resistance R25 is connected, and the second end of resistance R25 is connected with the negative signal end D- of USB interface；The power supply of interface chip U7 The power input VCC of input coupling end V3 and interface chip U7 respectively with the cathode of diode D6, capacitor C26 first end and The first end of capacitor C27 is connected, and the anode of diode D6 is connected with the cathode of diode D5, and the anode of diode D5 connects with USB Mouthful positive VBUS be connected, the ground terminal GND of the first end of capacitor C26, the first end of capacitor C27 and interface chip U7 respectively with Power ground is connected；The work indication end TNOW of interface chip U7 is connected with the first end of resistance R26, the second end of resistance R26 with The anode of light emitting diode D7 is connected, and the cathode of light emitting diode D7 is connected with power ground, the data receiver of interface chip U7 RXD is connected with the first end of resistance R22, and the second end of resistance R22 is connected with the interface data transmitting terminal of controller, interface chip The data sending terminal TXD of U7 is connected with the first end of resistance R24, and the second end of resistance R24 and the interface data of controller receive End is connected.Data are swapped into transmission by interface chip U7, wherein when interface chip U7 work, light emitting diode point Bright, specification interface chip U7 is carrying out the transmission between data；In addition interface chip U7 by USB interface power supply or passes through voltage Chip U6 power supply is interface chip U7 power supply by voltage chips U6 that is, when plugging USB flash disk；When the USB joint of insertion is included Supply voltage and the supply voltage for being higher than voltage chips U6 output are then interface chip U7 power supply by the USB joint of insertion.
It further include LF low frequency module in a kind of preferred embodiment of the utility model, the power supply of LF low frequency module is defeated Enter end to be connected with the anode of lithium battery, the power input control terminal of LF low frequency module and the power supply output control terminal 12V_ of controller SW is connected, and the frequency signal input end of LF low frequency module is connected with the low frequency signal output terminals A SK_125KHZ of controller；
The LF low frequency module includes voltage chips U6, the power input VIN's and voltage chips U6 of voltage chips U6 Enable end EN is connected with the collector of the first end of inductance L1, the first end of capacitor C12 and triode Q7 respectively, capacitor C12's Second end is connected with power ground, and the emitter of triode Q7 is connected with the anode of lithium battery, the base stage and resistance R47 of triode Q7 First end be connected, the second end of resistance R47 is connected with the power supply output control terminal 12V_SW of controller, the second end of inductance L1 It is connected respectively with the switch terminals SW of the anode of diode D4 and voltage chips U6, the cathode of diode D4 is respectively with resistance RF1's First end, the first end of resistance R9, the first end of capacitor C11 are connected with the first end of capacitor C19, the second end of resistance RF1 and The second end of capacitor C11 is connected with the feedback end FB of the first end of resistance RF2 and voltage chips U6 respectively, and the second of capacitor C19 The ground terminal GND at end, the second end of resistance RF2 and voltage chips U6 is connected with power ground respectively, the second end difference of resistance R9 It is connected with the power input VDD of the first end of capacitor C17, the first end of capacitor C18 and frequency chip U5, the of capacitor C17 The second end of two ends and capacitor C18 are connected with power ground respectively, the signal input part IN of frequency chip U5 and the low frequency of controller Signal output end ASK_125KHZ is connected, and the ground terminal GND of frequency chip U5 is connected with power ground, and the signal of frequency chip U5 is defeated Outlet OUT is connected with the first end of capacitor C13, and the second end of capacitor C13 is connected with the first end of inductance L2, and the second of inductance L2 End is connected with power ground；Voltage chips U6 provides 5.0V supply voltage for frequency chip U5, wherein the power supply of controller exports control When end 12V_SW output conduction level processed, triode Q7 conducting provides supply voltage and enable signal for voltage chips U6；Frequency Chip U5 realizes the transmission of 125KHz low frequency signal, realizes that function is matched in the activation of automobile automobile tyre pressure check wireless sending module Energy.
Or further include resistance R10, the first end of resistance R10 is connected with the power input VDD of frequency chip U5, resistance The second end of R10 is connected with the positive VBUS of USB interface.5.0V supply voltage, voltage are provided by USB interface for frequency chip U5 Chip U6 stops working.
In a kind of preferred embodiment of the utility model, wireless receiving module includes wireless chip U8, wireless chip The signal end RF_IN1_B of U8 is connected with the first end of the first end of capacitor C43 and inductance L4 respectively, the second end of capacitor C43 with Power ground is connected, and the second end of inductance L4 is connected with the first end of the first end of capacitor C37 and capacitor C44 respectively, capacitor C44's Second end is connected with power ground, the second end of capacitor C37 respectively with the first end of capacitor C38, the first end of resistance R36 and three poles The collector of pipe Q5 is connected, and the second end of capacitor C38 is connected with the first end of resistance R39, the second end of resistance R39 respectively with electricity First end, the first end of capacitor C39 of resistance R37 is connected with the base stage of triode Q5, emitter and the power ground phase of triode Q5 Even, the second end of resistance R37 respectively with the first end of resistance R32, the second end of resistance R36, the first end of capacitor C35 and capacitor The first end of C36 is connected, and the second end of capacitor C35 and the second end of capacitor C36 are connected with power ground respectively, and the of resistance R32 Two ends are connected with the first end of inductance L3, the second end of inductance L3 respectively with the first end of capacitor C28, the first end of capacitor C31, The first end of capacitor C32 is connected with the collector of triode Q4, second end, the second end and capacitor of capacitor C31 of capacitor C28 The second end of C32 is connected with power ground respectively, the base stage of triode Q4 respectively with the first end of resistance R27 and resistance R28 One end be connected, the second end of resistance R28 is connected with the power control terminal P23 of wireless chip U8, the second end of resistance R27 respectively with The emitter of triode Q4 is connected with the voltage output end OUT of voltage chips U3, the second end of capacitor C39 respectively with capacitor C41 First end be connected with the first end of inductance L5, the second end of inductance L5 respectively with the first end of capacitor C42 and antenna ANT1 phase Even, the second end of capacitor C41 and the second end of capacitor C42 are connected with power ground respectively.The received wireless communication of wireless receiving module Number interference is small, is conducive to sending and receiving for data.Wherein, capacitor C43, capacitor C44 and inductance L4 form π type filter circuit, Capacitor C41, capacitor C42 and inductance L5 form π type filter circuit, are conducive to signal filtering, prevent from interfering；The electricity of wireless chip U8 When source control terminal P23 is cut-off level, triode Q4 cut-off does not inwardly input oscillation power；Realize 315M/433MHz high frequency letter Number transmission-receiving function.
In a kind of preferred embodiment of the utility model, automobile tyre pressure check wireless sending module includes chip U1, Chip U1's restarts reset terminalIt is connected with the first end of resistance R2, the first end of the second end of resistance R2 and resistance R3, The first end of resistance R4, the first end of capacitor C2, the first end of capacitor C3, the first end of capacitor C4, the first end of inductance L2, core The power voltage terminal VDD of the power voltage terminal VDDA and chip U1 of piece U1 are connected, the second end of resistance R3 and the mode of chip U1 Hold BKGD/PTA4 be connected, the second end of the second end of capacitor C2, the second end of capacitor C3 and capacitor C4 respectively with power ground phase Even, the second end of resistance R4 is connected with the anode of button cell, and the cathode of button cell is connected with power ground；The second of inductance L2 End is connected with the radio frequency energy source RF of the first end of capacitor C5, the first end of capacitor C7 and chip U1 respectively, and the second of capacitor C5 End is connected with power ground, and the second end of capacitor C7 is connected with the first end of the first end of capacitor C8 and inductance L4 respectively, inductance L4 Second end be connected with power ground, the second end of capacitor C8 is connected with antenna A1；The inside rectifier terminal VREG and capacitor of chip U1 The first end of C6 is connected, and the second end of capacitor C6 is connected with power ground, the ground terminal of the ground terminal VSS of chip U1, chip U1 The RF ground terminal RFVSS of VSSA and chip U1 is connected with power ground respectively, and the of the crystal oscillator first end X1 and inductance L3 of chip U1 One end is connected, and the second end of inductance L3 is connected with the crystal oscillator first end X1 of the first end of capacitor C9 and crystal oscillator chip X1 respectively, electricity Hold C9 second end be connected with power ground, the crystal oscillator second end X0 of chip U1 and respectively with the first end of capacitor C10 and crystal oscillator core The crystal oscillator second end X2 of piece X1 is connected, and the second end of capacitor C10 is connected with power ground；The low frequency reception end LFA of chip U1 distinguishes It is connected with the first end of the first end of resistance R1, the first end of capacitor C1 and inductance L1, the low frequency reception end LFB difference of chip U1 It is connected with the second end of the second end of resistance R1, the second end of capacitor C1 and inductance L1.The chip is sending module anti-interference By force, the transmitting-receiving for being conducive to signal data will integrate pressure detecting, temperature detection, acceleration detection, the data of electric power detection It is sent to wireless receiving module.
In a kind of preferred embodiment of the utility model, alarm module includes buzzer BZ1, and buzzer BZ1 is just Extremely it is connected respectively with the cathode of the first end of resistance R38, the first end of capacitor C40 and diode D8, the second end of resistance R38 It is connected with the voltage output end OUT of voltage chips U3, the second end of capacitor C40 is connected with power ground, the negative pole end of buzzer BZ1 It is connected respectively with the collector of the anode of diode D8 and triode Q6, the emitter of triode Q6 is connected with power ground, three poles The base stage of pipe Q6 is connected with the first end of resistance R42, and the second end of resistance R42 is connected with the warning output end of controller；Alarm When, the warning output end of controller is conduction level, triode Q6 conducting, buzzer BZ1 forming circuit, buzzer BZ1 sending Song reminds driver to pay attention to tire condition, prevents tire from undesirable condition occur.Wherein diode D8 is for absorbing triode Q6 The induced voltage generated when cut-off prevents buzzer BZ1 from damaging.
Or/and further include the second output module of power supply, the power input and power supply first of the second output module of power supply are defeated The power output end of module is connected out, the control signal of the second output module of power supply and the power supply control signal of controller LCD_V is connected；Second output module of power supply includes triode Q2, the emitter of triode Q2 and the voltage of voltage chips U3 Output end OUT is connected, and the base stage of triode Q2 is connected with the first end of resistance R8, the second end of resistance R8 and the power supply of controller Control signal LCD_V is connected；When the power supply control signal LCD_V of controller is conduction level, triode Q2 conducting will 3.3V power supply is flowed by the emitter of triode, and the collector outflow of triode exports the supply voltage of 3.3V.
It or/and further include display screen power supply module, the power supply control signal of display screen power supply module and the electricity of controller Source control signal LCD_B is connected, and the power input of display screen power supply module and the power supply of the first output module of power supply export End is connected；Display screen power supply module includes triode Q3, and the collector of triode Q3 is connected with the first end of resistance R20, three poles The emitter of pipe Q3 is connected with the voltage output end OUT of voltage chips U3, the base stage and the first end phase of resistance R21 of triode Q3 Even, the second end of resistance R21 is connected with the power supply control signal LCD_B of controller；The power supply control signal of controller When LCD_B is conduction level, triode Q3 conducting provides trigger voltage for display screen.
It or/and further include controller work indicating module, the indication signal input terminal of controller work indicating module and control The indication signal output end STATUS_LED of device processed is connected, and the power input and power supply first of controller work indicating module are defeated The power output end of module is connected out；Controller work indicating module includes light emitting diode D9, the anode of light emitting diode D9 It is connected with the voltage output end OUT of voltage chips U3, the cathode of light emitting diode D9 is connected with the first end of resistance R43, resistance The second end of R43 is connected with the indication signal output end STATUS_LED of controller；The indication signal output end of controller STATUS_LED is low level, and light emitting diode D9 is lighted, and shows that controller is being in work.
It or/and further include controller wake-up module, the wake-up signal output end of controller wake-up module and calling out for controller The signal input part WKUP that wakes up is connected, the power input of controller wake-up module and the power output end of the first output module of power supply It is connected；Controller wake-up module includes resistance R46, the first end and the voltage output end OUT phase of voltage chips U3 of resistance R46 Even, the second end of resistance R46 is connected with the wake-up signal input terminal WKUP of the first end of vibration switch R45 and controller respectively, The second end of vibration switch R45 is connected with power ground；When automobile shakes, vibration switch R45 closure, the wake-up letter of controller The level signal of number input terminal WKUP drags down, and controller wakes up.
Or/and further include controller resetting module, the resetting that controller resets the signal output end and controller of module is believed Number input terminal is connected, and the power input of controller resetting module is connected with the power output end of the first output module of power supply；Control System thinks highly of that set module include reset button RST1, the first end of reset button RST1 respectively with power ground and capacitor C58 first End is connected, the second end of the reset button RST1 weight with the second end of capacitor C58, the first end of resistance R44 and controller respectively It sets signal input part to be connected, the second end of resistance R44 is connected with the voltage output end OUT of voltage chips U3.Press reset button When RST1, the reset signal input terminal of controller is low level, controller resetting.
It or/and further include solar recharging detection module, the detection input and solar energy of solar recharging detection module The power output end of module is connected, and the detection output of solar recharging detection module and the solar charging electro-detection of controller are defeated Enter to hold SOLAR_SAMPLE to be connected, solar recharging detection module includes resistance R11, resistance R12, resistance R17 and capacitor C14, The first end of resistance R11 is connected with the anode of diode D3, the second end of resistance R11 respectively with the first end and electricity of resistance R12 The first end for hindering R17 is connected, and the second end of resistance R17 is connected with power ground, and the second end of resistance R12 is respectively with capacitor C14's First end is connected with the solar recharging detection input SOLAR_SAMPLE of controller, the second end and power ground of capacitor C14 It is connected；
Or/and further include USB charging detecting model, the detection input of USB charging detecting model is with USB interface USB1's Positive VBUS is connected, the detection output of USB charging detecting model and the USB charging detection input USB_SAMPLE of controller It is connected, USB charging detecting model includes resistance R15, resistance R16, resistance R19 and capacitor C16, the first end and USB of resistance R15 The positive VBUS of interface USB1 is connected, the second end of the resistance R15 first end with the first end of resistance R16 and resistance R19 respectively Be connected, the second end of resistance R19 is connected with power ground, the second end of resistance R16 respectively with the first end and controller of capacitor C16 USB charging detection input USB_SAMPLE be connected, the second end of capacitor C16 is connected with power ground；
It or/and further include lithium battery electric power detection module, the detection input of lithium battery electric power detection module It is connected with the anode of lithium battery, the detection output of lithium battery electric power detection module and the electric quantity of lithium battery of controller detect Input terminal BAT_SAMPLE is connected, and 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 and The first end of resistance R18 is connected, and the second end of resistance R18 is connected with power ground, the second end of resistance R14 respectively with capacitor C15 First end be connected with the electric quantity of lithium battery detection input BAT_SAMPLE of controller, the second end and power ground of capacitor C15 It is connected.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are: the utility model can Moment wireless monitor automobile tire, and alarm is issued when something goes wrong in tire pressure and tyre temperature, prompt driver to pay attention to Tire state.
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.
Fig. 3 is the wireless receiving module circuit connection schematic block diagram of the utility model.
Fig. 4 is the wireless sending module circuit connection schematic block diagram of the utility model.
Fig. 5 is the controller peripheral circuit connection signal block diagram of the utility model.
Fig. 6 is the display module circuit connection schematic block 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 direct-type automobile tire pressure monitoring systems, as shown in Figure 1, including vehicle tire pressure Detect wireless sending module, wireless receiving module, controller, power module, display module or/and alarm module.
The vehicle tire pressure that automobile tyre pressure check wireless sending module will test acquisition is sent to wireless receiving module, wirelessly connects The data terminal for receiving module is connected with the wireless data end of controller, and the display of the display output end and display module of controller inputs End be connected, the warning output end of controller is connected with the alarm input terminal of alarm module, power module be respectively controller, wirelessly Receiving module, display module and alarm module power supply.
In a kind of preferred embodiment of the utility model, as shown in Fig. 2, the power module includes lithium battery and electricity The anode of the first output module of source, the lithium battery is connected with the anode of the first output module of power supply, the cathode of the lithium battery It is connected with the cathode of the first output module of power supply；First output module of power supply includes voltage chips U3, voltage chips U3's Voltage input end VIN is connected with the anode of the emitter of triode Q1, the first end of resistance R5 and lithium battery respectively, lithium battery Cathode is connected with power ground, and the second end of resistance R5 is connected with the collector of the first end of resistance R7 and triode Q1 respectively, electricity The second end of resistance R7 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, electricity 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, and the voltage of voltage chips U3 is defeated Outlet OUT is connected with the first end of the first end of capacitor C5 and capacitor C6 respectively, and the second of the second end of capacitor C5 and capacitor C6 End is connected with power ground respectively.In the present embodiment, the model SPX3819M5-L-3.3/TR of voltage chips U3, triode The resistance value of the model L8550HQLT1G of Q1, resistance R6 are 1K ± 1%, and the resistance value of resistance R7 is 4.7K ± 1%, capacitor C5's Capacitance is 10uF ± 20%, and the capacitance of capacitor C6 is 100nF ± 5%, and the resistance value of resistance R5 can carry out really according to the actual situation It is fixed, preferably take 4.7K ± 1%.
It further include lithium battery charge management module, the lithium battery in a kind of preferred embodiment of the utility model The positive terminal of charge management module is connected with the anode of lithium battery, the negative pole end and lithium battery of the lithium battery charge management module Cathode be connected；The lithium battery charge management module includes voltage chips U2, the charged state indication end of voltage chips U2 CHRG is connected with the cathode of light emitting diode D1, and the anode of light emitting diode D1 is connected with the first end of resistance R1, resistance R1's Second end respectively with the first end of capacitor C1, the first end of capacitor C2, the power voltage terminal VCC of voltage chips U2 and power input The power output end of module is connected, and the second end of capacitor C1 and the second end of capacitor C2 are connected with power ground respectively, voltage chips The charging current output end BAT of U2 is connected with the first end of resistance R3, and the second end of resistance R3 is connected with the anode of lithium electronics, electricity The ground terminal GND of pressure chip U2 is connected with power ground, and the first of the charging current setting end PROG and resistance R4 of voltage chips U2 End is connected, and the second end of resistance R4 is connected with power ground.In the present embodiment, the model TP4065 of voltage chips U2, electricity The resistance value for hindering 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%, capacitor C1's Capacitance is 10uF ± 20%, and the capacitance of capacitor C2 is 100nF ± 5%, and light emitting diode D1 issues feux rouges or other types of color It is color.
In a kind of preferred embodiment of the utility model, Power Entry Module includes USB interface USB1 or/and the sun It can module；The power output end of USB interface USB1 is connected with the power input of lithium battery charge management module, solar energy module Power output end be connected with the power input of lithium battery charge management module.
The positive VBUS of USB interface USB1 is connected with the anode of diode D2, the cathode GND and power supply of USB interface USB1 Ground is connected, and the cathode of diode D2 is connected with the first end of temperature detect switch (TDS) Switch1, the second end of temperature detect switch (TDS) Switch1 with The power voltage terminal VCC of voltage chips U3 is connected；In embodiment, the model LMBR0520T1G of diode D2, temperature detect switch (TDS) The model BW-B2D of Switch1.
Solar energy module include solar panel SOL1 anode respectively with the first end of capacitor C4 and diode D3 Anode is connected, and the cathode of solar panel SOL1 and the second end of capacitor C4 are connected with power ground respectively, and diode D3's is negative Pole is connected with the first end of temperature detect switch (TDS) Switch1.In the present embodiment, the model LMBR0520T1G of diode D3, electricity The capacitance for holding C4 is 100nF ± 5%；The capacitance of capacitor C3 is 22pF ± 5%, and the resistance value of resistance R2 is 0 Ω ± 5%.
It further include interface modular converter, the electricity of interface modular converter in a kind of preferred embodiment of the utility model Source input terminal is connected with the power output end of USB interface, the usb signal end of interface modular converter and the data terminal phase of USB interface Even, the data terminal of interface modular converter is connected with the interface data end of controller；Interface modular converter includes interface chip U7, is connect The USB positive signal end UD+ of mouth chip U7 is connected with the first end of resistance R23, the second end of resistance R23 and the positive letter of USB interface Number end D+ be connected, the USB negative signal end UD- of interface chip U7 is connected with the first end of resistance R25, the second end of resistance R25 and The negative signal end D- of USB interface is connected；The power input of the power input coupled end V3 and interface chip U7 of interface chip U7 VCC is connected with the first end of the cathode of diode D6, the first end of capacitor C26 and capacitor C27 respectively, diode D6 anode with The cathode of diode D5 is connected, and the anode of diode D5 is connected with the positive VBUS of USB interface, the first end of capacitor C26, capacitor The first end of C27 and the ground terminal GND of interface chip U7 are connected with power ground respectively；The work indication end TNOW of interface chip U7 It is connected with the first end of resistance R26, the second end of resistance R26 is connected with the anode of light emitting diode D7, light emitting diode D7's Cathode is connected with power ground, and the data receiver RXD of interface chip U7 is connected with the first end of resistance R22, and the second of resistance R22 End is connected with the interface data transmitting terminal of controller, the first end phase of the data sending terminal TXD and resistance R24 of interface chip U7 Even, the second end of resistance R24 is connected with the interface data receiving end of controller.In the present embodiment, the type of interface chip U7 The resistance value for number being CH340E, resistance R22 and resistance R24 is 0 Ω ± 5%, the resistance value of resistance R23 and resistance R25 be 27 Ω ± The resistance value of 1%, resistance R26 are 4.7K ± 1%, and the capacitance of capacitor C26 and capacitor C27 are 100nF ± 5%, diode D5 and two The type of pole pipe D6 is 1N4148WS, and light emitting diode D7 issues green light or other types of color.
It further include LF low frequency module in a kind of preferred embodiment of the utility model, the power supply of LF low frequency module is defeated Enter end to be connected with the anode of lithium battery, the power input control terminal of LF low frequency module and the power supply output control terminal 12V_ of controller SW is connected, and the frequency signal input end of LF low frequency module is connected with the low frequency signal output terminals A SK_125KHZ of controller；It is described LF low frequency module includes voltage chips U6, the enable end EN difference of the power input VIN and voltage chips U6 of voltage chips U6 It is connected with the collector of the first end of inductance L1, the first end of capacitor C12 and triode Q7, the second end and power supply of capacitor C12 Ground is connected, and the emitter of triode Q7 is connected with the anode of lithium battery, the base stage and the first end phase of resistance R47 of triode Q7 Even, the second end of resistance R47 is connected with the power supply output control terminal 12V_SW of controller, the second end of inductance L1 respectively with two poles Pipe D4 anode be connected with the switch terminals SW of voltage chips U6, the cathode of diode D4 respectively with the first end of resistance RF1, resistance The first end of R9, the first end of capacitor C11 are connected with the first end of capacitor C19, and the of the second end of resistance RF1 and capacitor C11 Two ends are connected with the feedback end FB of the first end of resistance RF2 and voltage chips U6 respectively, the second end of capacitor C19, resistance RF2 The ground terminal GND of second end and voltage chips U6 are connected with power ground respectively, the second end of resistance R9 respectively with capacitor C17 One end, capacitor C18 first end be connected with the power input VDD of frequency chip U5, the second end and capacitor C18 of capacitor C17 Second end be connected respectively with power ground, the signal input part IN of frequency chip U5 and the low frequency signal output terminals A SK_ of controller 125KHZ is connected, and the ground terminal GND of frequency chip U5 is connected with power ground, the signal output end OUT and capacitor of frequency chip U5 The first end of C13 is connected, and the second end of capacitor C13 is connected with the first end of inductance L2, second end and the power ground phase of inductance L2 Even；In the present embodiment, the model TPS61041 of the model MCP1416 of frequency chip U5, voltage chips U6, resistance The resistance value of R47 is 1K ± 1%, and the resistance value of resistance R9 and resistance R10 are 0 Ω ± 5%, and the resistance value of resistance RF1 is 1M ± 1%, electricity The resistance value of RF2 is hindered for 115K ± 1%, and the capacitance of capacitor C12 and capacitor C19 are 10uF ± 20%, and the capacitance of capacitor C11 is 5pF The capacitance of ± 0.25pF, capacitor C17 are 100nF ± 10%, and the capacitance of capacitor C18 is 100nF ± 5%, and the capacitance of capacitor C13 is 220pF ± 5%, the inductance value of inductance L1 are 6.8uH20%, and the inductance value of inductance L2 is 7.2mH, the model of triode Q7 The model LMBR0520T1G of L9015QLT1G, diode D4.
Or further include resistance R10, the first end of resistance R10 is connected with the power input VDD of frequency chip U5, resistance The second end of R10 is connected with the positive VBUS of USB interface.In the present embodiment, the resistance value of resistance R10 is 0 Ω ± 5%.
In a kind of preferred embodiment of the utility model, as shown in figure 3, wireless receiving module includes wireless chip The signal end RF_IN1_B of U8, wireless chip U8 are connected with the first end of the first end of capacitor C43 and inductance L4 respectively, capacitor The second end of C43 is connected with power ground, the second end of the inductance L4 first end with the first end of capacitor C37 and capacitor C44 respectively Be connected, the second end of capacitor C44 is connected with power ground, the second end of capacitor C37 respectively with the first end of capacitor C38, resistance R36 First end be connected with the collector of triode Q5, the second end of capacitor C38 is connected with the first end of resistance R39, resistance R39's Second end is connected with the base stage of the first end of resistance R37, the first end of capacitor C39 and triode Q5 respectively, the hair of triode Q5 Emitter-base bandgap grading is connected with power ground, the second end of resistance R37 respectively with the first end of resistance R32, the second end of resistance R36, capacitor C35 First end be connected with the first end of capacitor C36, the second end of the second end of capacitor C35 and capacitor C36 respectively with power ground phase Even, the second end of resistance R32 is connected with the first end of inductance L3, the second end of inductance L3 respectively with the first end of capacitor C28, electricity First end, the first end of capacitor C32 for holding C31 be connected with the collector of triode Q4, the second end of capacitor C28, capacitor C31 Second end and the second end of capacitor C32 are connected with power ground respectively, the base stage of triode Q4 respectively with the first end of resistance R27 and The first end of resistance R28 is connected, and the second end of resistance R28 is connected with the power control terminal P23 of wireless chip U8, resistance R27's Second end is connected with the voltage output end OUT of the emitter of triode Q4 and voltage chips U3 respectively, the second end point of capacitor C39 Be not connected with the first end of the first end of capacitor C41 and inductance L5, the second end of inductance L5 respectively with the first end of capacitor C42 and Antenna ANT1 is connected, and the second end of capacitor C41 and the second end of capacitor C42 are connected with power ground respectively.In the present embodiment, The model NCK2912 of wireless chip U8 is low-power consumption RF transceiver, reduces and use power consumption, can only guarantee that 3 year service life mentioned It is upgraded to 6 years；The capacitance of capacitor C43 is 10pF ± 0.1pF, and the capacitance of capacitor C44 is 1pF ± 0.1pF, capacitor C35, capacitor C37, The capacitance of capacitor C38 and capacitor C39 are 390pF ± 5%, and the capacitance of capacitor C41 is 4.7pF ± 0.25pF, the capacitance of capacitor C42 For 5.6pF ± 0.25pF, the capacitance of capacitor C36 is 100nF ± 5%, and the capacitance of capacitor C31 is 33pF ± 5%, capacitor C28 and The capacitance of capacitor C32 is 220pF ± 5%, and the resistance value of resistance R39 is 750 Ω ± 1%, the resistance value of resistance R36 be 300 Ω ± The resistance value of 1%, resistance R37 are 75K ± 5%, and the resistance value of resistance R32 is 75 Ω ± 1%, and the resistance value of resistance R27 and resistance R28 are The inductance value of 4.7K ± 1%, inductance L4 and inductance L5 are 10nH ± 5%, and the inductance value of inductance L3 is 270nH, 110mA, triode Q4 Model L8550HQLT1G, the model BFU520WF of triode Q5.
In the present embodiment, further include wireless chip U8 the end VDD_IO respectively with the first end of capacitor C20, capacitor The first end of C21 is connected with the voltage output end OUT of voltage chips U3, the second end of capacitor C20 and the second end point of capacitor C21 It is not connected with power ground；The end VDD_ADC of wireless chip U8, the end VDD_XO of wireless chip U8, wireless chip U8 VDD_LO End, the end VDD_DIG of wireless chip U8, the end VDD_RF of wireless chip U8, wireless chip U8 the end VDD_RF respectively with capacitor The first end of C20, the first end of capacitor C23, the first end of capacitor C24, the first end of capacitor C25, the first end of capacitor C29, The first end of capacitor C30 is connected with the voltage output end OUT of voltage chips U3, and the second of the second end of capacitor C20, capacitor C23 The second end at end, the second end of capacitor C24, the second end of capacitor C25, the second end of capacitor C29 and capacitor C30 respectively with power supply Ground is connected.Other connection relationships not described are as shown in Figure 3.Wherein, the capacitance of capacitor C21 and capacitor C33 are 10nF ± 10%, The capacitance of capacitor C22 is 10uF ± 20%, capacitor C20, capacitor C25, capacitor C29 and capacitor C30 capacitance be 100nF ± 5%, The capacitance of capacitor C23 is 100nF ± 5%, and the capacitance of capacitor C24 is 10nF ± 10%, the capacitance of capacitor C34 be 15nF ± The capacitance of 20%, capacitor C46 are 15pF ± 5%, and the capacitance of capacitor C47 is 20pF ± 5%, the capacitance of capacitor C45 be 1uF ± The frequency of 10%, crystal oscillator chip X2 are 27.6MHZ ± 20ppm, the resistance value of resistance R29, resistance R30, resistance R31 and resistance R41 For 0 Ω ± 5%, the resistance value of resistance R40 is 1K ± 1%.
In a kind of preferred embodiment of the utility model, as shown in figure 4, automobile tyre pressure check wireless sending module packet Chip U1 is included, chip U1's restarts reset terminalIt is connected with the first end of resistance R2, the second end and resistance R3 of resistance R2 First end, the first end of resistance R4, the first end of capacitor C2, the first end of capacitor C3, the first end of capacitor C4, inductance L2 First end, chip U1 the power voltage terminal VDD of power voltage terminal VDDA and chip U1 be connected, the second end and chip of resistance R3 The mode end BKGD/PTA4 of U1 is connected, the second end of the second end of capacitor C2, the second end of capacitor C3 and capacitor C4 respectively with electricity Source it is connected, the second end of resistance R4 is connected with the anode of button cell, and the cathode of button cell is connected with power ground；Inductance L2 Second end be connected respectively with the radio frequency energy source RF of the first end of capacitor C5, the first end of capacitor C7 and chip U1, capacitor C5 Second end be connected with power ground, the second end of capacitor C7 is connected with the first end of the first end of capacitor C8 and inductance L4 respectively, The second end of inductance L4 is connected with power ground, and the second end of capacitor C8 is connected with antenna A1；The inside rectifier terminal VREG of chip U1 It is connected with the first end of capacitor C6, the second end of capacitor C6 is connected with power ground, and the ground terminal VSS of chip U1, chip U1 connect The RF ground terminal RFVSS of ground terminal VSSA and chip U1 is connected with power ground respectively, the crystal oscillator first end X1 and inductance L3 of chip U1 First end be connected, the second end of the inductance L3 crystal oscillator first end X1 phase with the first end of capacitor C9 and crystal oscillator chip X1 respectively Even, the second end of capacitor C9 is connected with power ground, the crystal oscillator second end X0 of chip U1 and respectively with the first end and crystalline substance of capacitor C10 The crystal oscillator second end X2 of vibration chip X1 is connected, and the second end of capacitor C10 is connected with power ground；The low frequency reception end LFA of chip U1 It is connected respectively with the first end of the first end of resistance R1, the first end of capacitor C1 and inductance L1, the low frequency reception end LFB of chip U1 It is connected respectively with the second end of the second end of resistance R1, the second end of capacitor C1 and inductance L1.In the present embodiment, chip U1 Model FXTH870911DT1, FXTH87, FXTH8715 or FXTH87E, the capacitance of capacitor C1 and capacitor C8 be 220pF ± The capacitance of 5%, capacitor C2 are 104 ± 10%, and the capacitance of capacitor C3 is 100pF ± 5%, and the capacitance of capacitor C4 and capacitor C7 are 15pF ± 5%, the capacitance of capacitor C5 are 15pF ± 5%, and the capacitance of capacitor C6 is 470nF ± 10%, capacitor C9 and capacitor C10's Capacitance is 1.5pF, and the resistance value of resistance R4 is that the resistance value of 0 Ω, resistance R2 and resistance R3 are 4.7K ± 1%, and the resistance value of resistance R1 is 10K ± 0.1%, the inductance value of inductance L1 are 7.2nH, and the inductance value of inductance L2 is 72nH ± 5%, the inductance value of inductance L3 be 10nH ± The inductance value of 5%, inductance L4 are 39nH ± 5%.
In a kind of preferred embodiment of the utility model, as shown in figure 5, alarm module includes buzzer BZ1, buzzing The positive terminal of device BZ1 is connected with the cathode of the first end of resistance R38, the first end of capacitor C40 and diode D8 respectively, resistance The second end of R38 is connected with the voltage output end OUT of voltage chips U3, and the second end of capacitor C40 is connected with power ground, buzzer The negative pole end of BZ1 is connected with the collector of the anode of diode D8 and triode Q6 respectively, the emitter and power supply of triode Q6 Ground is connected, and the base stage of triode Q6 is connected with the first end of resistance R42, the second end of resistance R42 and the warning output of controller End is connected；In the present embodiment, the model STM8L151 of controller is low-power consumption microcontroller, reduces and use power consumption；Electricity The capacitance for holding C40 is 1uF ± 10%, and the resistance value of resistance R38 is 10 Ω ± 5%, and the resistance value of resistance R42 is 1K ± 1%, triode The model 1N4148WS of the model S9013 of Q6, diode D8.
Or/and further include the second output module of power supply, the power input and power supply first of the second output module of power supply are defeated The power output end of module is connected out, the control signal of the second output module of power supply and the power supply control signal of controller LCD_V is connected；Second output module of power supply includes triode Q2, the emitter of triode Q2 and the voltage of voltage chips U3 Output end OUT is connected, and the base stage of triode Q2 is connected with the first end of resistance R8, the second end of resistance R8 and the power supply of controller Control signal LCD_V is connected；In the present embodiment, the model L9015QLT1G of triode Q2, the resistance value of resistance R8 are 1K ± 1%.
It or/and further include display screen power supply module, the power supply control signal of display screen power supply module and the electricity of controller Source control signal LCD_B is connected, and the power input of display screen power supply module and the power supply of the first output module of power supply export End is connected；Display screen power supply module includes triode Q3, and the collector of triode Q3 is connected with the first end of resistance R20, three poles The emitter of pipe Q3 is connected with the voltage output end OUT of voltage chips U3, the base stage and the first end phase of resistance R21 of triode Q3 Even, the second end of resistance R21 is connected with the power supply control signal LCD_B of controller；In the present embodiment, triode Q3 The resistance value of model L9015QLT1G, resistance R20 are 0 Ω ± 5%, and the resistance value of resistance R21 is 1K ± 1%.
It or/and further include controller work indicating module, the indication signal input terminal of controller work indicating module and control The indication signal output end STATUS_LED of device processed is connected, and the power input and power supply first of controller work indicating module are defeated The power output end of module is connected out；Controller work indicating module includes light emitting diode D9, the anode of light emitting diode D9 It is connected with the voltage output end OUT of voltage chips U3, the cathode of light emitting diode D9 is connected with the first end of resistance R43, resistance The second end of R43 is connected with the indication signal output end STATUS_LED of controller；In the present embodiment, the resistance of resistance R43 Value is 4.7K ± 1%, is green light when light emitting diode D9 is lighted, or other colors.
It or/and further include controller wake-up module, the wake-up signal output end of controller wake-up module and calling out for controller The signal input part WKUP that wakes up is connected, the power input of controller wake-up module and the power output end of the first output module of power supply It is connected；Controller wake-up module includes resistance R46, the first end and the voltage output end OUT phase of voltage chips U3 of resistance R46 Even, the second end of resistance R46 is connected with the wake-up signal input terminal WKUP of the first end of vibration switch R45 and controller respectively, The second end of vibration switch R45 is connected with power ground；In the present embodiment, the model CSX-SEN- of vibration switch R45 The resistance value of 300A, resistance R46 are 2M ± 1%.
Or/and further include controller resetting module, the resetting that controller resets the signal output end and controller of module is believed Number input terminal is connected, and the power input of controller resetting module is connected with the power output end of the first output module of power supply；Control System thinks highly of that set module include reset button RST1, the first end of reset button RST1 respectively with power ground and capacitor C58 first End is connected, the second end of the reset button RST1 weight with the second end of capacitor C58, the first end of resistance R44 and controller respectively It sets signal input part to be connected, the second end of resistance R44 is connected with the voltage output end OUT of voltage chips U3.In present embodiment In, the capacitance of capacitor C58 is that value is 100nF ± 5%, and resistance R44 is 1K, can also be set according to the actual situation.
In a kind of preferred embodiment of the utility model, as shown in fig. 6, display module includes display screen U1 and display The signal end of driving unit U4, display screen U1 are connected with the signal end of display driver element U4, the signal of display driver element U4 End is connected with the display output end of controller.In the present embodiment, do not specifically describe display screen U1, display driver element U4 and The connection of controller and other circuits is then connected with each other if there is identical label character in figure, for example, display screen U1 in Fig. 6 COM0~7 that COM0~7 correspond respectively to display driver element U4 are connected, and the SEG0 of display screen U1,1,8~17 correspond respectively to The SEG0 of display driver element U4,1,8~17 are connected, other to repeat no more.In addition in Fig. 1~6, identical text mark if it exists Note, then be connected with each other, such as LCD_CS, LCD_WR, LCD_DA of display driver element U4 correspond respectively in Fig. 5 control in Fig. 6 LCD_CS, LCD_WR, LCD_DA of device processed are connected, in Fig. 6 USER1~3 of interface P3 correspond respectively to the USER1 of controller~ 3 (i.e. the first end of the first end of button switch S1, the first end of button switch S2 and button switch S3 respectively with power ground phase Even, the second end of button switch S1 is connected with the first signal input part of button of controller, the second end and control of button switch S2 The button second signal input terminal of device processed is connected, the second end and the button third signal input part phase of controller of button switch S3 Even), NCK2912_RXD, NCK2912_TXD, NCK2912_CS of controller are respectively corresponded and the NCK2912_ in Fig. 3 in Fig. 5 RXD, NCK2912_TXD, NCK2912_CS are connected, other to repeat no more.
It in the present embodiment, further include solar recharging detection module, the detection input of solar recharging detection module End is connected with the power output end of solar energy module, the detection output of solar recharging detection module and the solar energy of controller The detection input SOLAR_SAMPLE that charges is connected, and solar recharging detection module includes resistance R11, resistance R12, resistance R17 It is connected with the first end of capacitor C14, resistance R11 with the anode of diode D3, the second end of resistance R11 is respectively with resistance R12's First end is connected with the first end of resistance R17, and the second end of resistance R17 is connected with power ground, the second end of resistance R12 respectively with The first end of capacitor C14 is connected with the solar recharging detection input SOLAR_SAMPLE of controller, the second end of capacitor C14 It is 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 ± 1%, electricity The resistance value for hindering R17 is 2M ± 1%, and the capacitance of capacitor C14 is 100nF ± 5%.Solar recharging detection module for detecting whether There is solar recharging.
It further include USB charging detecting model, the detection input of USB charging detecting model and the anode of USB interface USB1 VBUS is connected, the detection output and the USB charging detection input USB_SAMPLE phase of controller of USB charging detecting model Even, USB charging detecting model includes resistance R15, resistance R16, resistance R19 and capacitor C16, and first end and the USB of resistance R15 connects The positive VBUS of mouthful USB1 is connected, the second end of the resistance R15 first end phase with the first end of resistance R16 and resistance R19 respectively Even, the second end of resistance R19 is connected with power ground, the second end of resistance R16 respectively with the first end of capacitor C16 and controller USB charges, and detection input USB_SAMPLE is connected, and the second end of capacitor C16 is connected with power ground.In the present embodiment, electric The resistance value for hindering R15 is 2M ± 1%, and the resistance value of resistance R16 is 1K ± 1%, and the resistance value of resistance R19 is 2M ± 1%, capacitor C16's Capacitance is 100nF ± 5%.USB charging detecting model is for detecting whether there is USB charging.
It further include lithium battery electric power detection module, detection input and the lithium electricity of lithium battery electric power detection module The anode in pond is connected, the detection output of lithium battery electric power detection module and the electric quantity of lithium battery detection input of controller BAT_SAMPLE is connected, and lithium battery electric power detection module includes resistance R13, resistance R14, resistance R18 and capacitor C15, electricity Resistance R13 first end be connected with the anode of lithium battery, the second end of resistance R13 respectively with the first end of resistance R14 and resistance R18 First end be connected, the second end of resistance R18 is connected with power ground, the second end of the resistance R14 first end with capacitor C15 respectively It is connected with the electric quantity of lithium battery detection input BAT_SAMPLE of controller, the second end of capacitor C15 is connected with power ground.At this In embodiment, the resistance value of resistance R13 is 2M ± 1%, and the resistance value of resistance R14 is 1K ± 1%, the resistance value of resistance R18 be 2M ± The capacitance of 1%, capacitor C15 are 100nF ± 5%.Lithium battery electric power detection module is for detecting lithium battery remaining capacity.
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 (10)

1. a kind of direct-type automobile tire pressure monitoring system, which is characterized in that including automobile tyre pressure check wireless sending module, Wireless receiving module, controller, power module, display module or/and alarm module；
The vehicle tire pressure that automobile tyre pressure check wireless sending module will test acquisition is sent to wireless receiving module, wireless receiving mould The data terminal of block is connected with the wireless data end of controller, the display input terminal phase of the display output end and display module of controller Even, the warning output end of controller is connected with the alarm input terminal of alarm module, and power module is respectively controller, wireless receiving Module, display module and alarm module power supply.
2. direct-type automobile tire pressure monitoring system according to claim 1, which is characterized in that the power module packet The first output module of lithium battery and power supply is included, the anode of the lithium battery is connected with the anode of the first output module of power supply, described The cathode of lithium battery is connected with the cathode of the first output module of power supply；
First output module of power supply includes voltage chips U3, the voltage input end VIN of voltage chips U3 respectively with triode The emitter of Q1, the first end of resistance R5 are connected with the anode of lithium battery, and the cathode of lithium battery is connected with power ground, resistance R5's Second end is connected with the collector of the first end of resistance R7 and triode Q1 respectively, and the second end of resistance R7 is with voltage chips U3's Enable end EN is connected, and 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, electricity The ground terminal GND of pressure chip U3 is connected with power ground, the voltage output end OUT of the voltage chips U3 first end with capacitor C5 respectively It is connected with the first end of capacitor C6, the second end of capacitor C5 and the second end of capacitor C6 are connected with power ground respectively.
3. direct-type automobile tire pressure monitoring system according to claim 2, which is characterized in that further include that lithium battery fills The positive terminal of electric management module, the lithium battery charge management module is connected with the anode of lithium battery, the lithium battery charging valve The negative pole end of reason module is connected with the cathode of lithium battery；
The lithium battery charge management module includes voltage chips U2, the charged state indication end CHRG of voltage chips U2 and is shone The cathode of diode D1 is connected, and the anode of light emitting diode D1 is connected with the first end of resistance R1, the second end difference of resistance R1 With the first end of capacitor C1, the first end of capacitor C2, the power voltage terminal VCC of voltage chips U2 and Power Entry Module power supply Output end is connected, and the second end of capacitor C1 and the second end of capacitor C2 are connected with power ground respectively, the charging electricity of voltage chips U2 Stream output end BAT is connected with the first end of resistance R3, and the second end of resistance R3 is connected with the anode of lithium electronics, voltage chips U2's Ground terminal GND is connected with power ground, and the charging current setting end PROG of voltage chips U2 is connected with the first end of resistance R4, resistance The second end of R4 is connected with power ground.
4. direct-type automobile tire pressure monitoring system according to claim 3, which is characterized in that Power Entry Module packet Include USB interface USB1 or/and solar energy module；The power output end of USB interface USB1 and the electricity of lithium battery charge management module Source input terminal is connected, and the power output end of solar energy module is connected with the power input of lithium battery charge management module；
The positive VBUS of USB interface USB1 is connected with the anode of diode D2, cathode GND and the power ground phase of USB interface USB1 Even, the cathode of diode D2 is connected with the first end of temperature detect switch (TDS) Switch1, the second end and voltage of temperature detect switch (TDS) Switch1 The power voltage terminal VCC of chip U3 is connected；
Solar energy module includes the positive anode with the first end of capacitor C4 and diode D3 respectively of solar panel SOL1 Be connected, the cathode of solar panel SOL1 and the second end of capacitor C4 are connected with power ground respectively, the cathode of diode D3 and The first end of temperature detect switch (TDS) Switch1 is connected.
5. direct-type automobile tire pressure monitoring system according to claim 4, which is characterized in that further include interface conversion Module, the power input of interface modular converter are connected with the power output end of USB interface, the usb signal of interface modular converter End is connected with the data terminal of USB interface, and the data terminal of interface modular converter is connected with the interface data end of controller；
Interface modular converter includes interface chip U7, the first end phase of the USB positive signal end UD+ and resistance R23 of interface chip U7 Even, the second end of resistance R23 is connected with the positive signal end D+ of USB interface, the USB negative signal end UD- and resistance of interface chip U7 The first end of R25 is connected, and the second end of resistance R25 is connected with the negative signal end D- of USB interface；The power input of interface chip U7 The power input VCC of coupled end V3 and interface chip U7 respectively with the cathode of diode D6, the first end of capacitor C26 and capacitor The first end of C27 is connected, and the anode of diode D6 is connected with the cathode of diode D5, anode and the USB interface of diode D5 Positive VBUS be connected, the ground terminal GND of the first end of capacitor C26, the first end of capacitor C27 and interface chip U7 respectively with power supply Ground is connected；The work indication end TNOW of interface chip U7 is connected with the first end of resistance R26, the second end of resistance R26 and shine The anode of diode D7 is connected, and the cathode of light emitting diode D7 is connected with power ground, the data receiver RXD of interface chip U7 and The first end of resistance R22 is connected, and the second end of resistance R22 is connected with the interface data transmitting terminal of controller, interface chip U7's Data sending terminal TXD is connected with the first end of resistance R24, the second end and the interface data receiving end phase of controller of resistance R24 Even.
6. direct-type automobile tire pressure monitoring system according to claim 2, which is characterized in that further include LF Low-frequency Modes The power input of block, LF low frequency module is connected with the anode of lithium battery, the power input control terminal and control of LF low frequency module The power supply output control terminal 12V_SW of device is connected, and the frequency signal input end of LF low frequency module and the low frequency signal of controller export ASK_125KHZ is held to be connected；
The LF low frequency module includes voltage chips U6, and the power input VIN's and voltage chips U6 of voltage chips U6 is enabled End EN is connected with the collector of the first end of inductance L1, the first end of capacitor C12 and triode Q7 respectively, and the second of capacitor C12 End is connected with power ground, and the emitter of triode Q7 is connected with the anode of lithium battery, and the of the base stage of triode Q7 and resistance R47 One end is connected, and the second end of resistance R47 is connected with the power supply output control terminal 12V_SW of controller, the second end difference of inductance L1 Be connected with the anode and the switch terminals SW of voltage chips U6 of diode D4, the cathode of diode D4 respectively with resistance RF1 first End, the first end of resistance R9, the first end of capacitor C11 are connected with the first end of capacitor C19, the second end and capacitor of resistance RF1 The second end of C11 is connected with the feedback end FB of the first end of resistance RF2 and voltage chips U6 respectively, the second end of capacitor C19, electricity The second end and the ground terminal GND of voltage chips U6 for hindering RF2 are connected with power ground respectively, the second end of resistance R9 respectively with capacitor First end, the first end of capacitor C18 of C17 is connected with the power input VDD of frequency chip U5, the second end of capacitor C17 and The second end of capacitor C18 is connected with power ground respectively, and the signal input part IN of frequency chip U5 and the low frequency signal of controller are defeated Outlet ASK_125KHZ is connected, and the ground terminal GND of frequency chip U5 is connected with power ground, the signal output end of frequency chip U5 OUT is connected with the first end of capacitor C13, and the second end of capacitor C13 is connected with the first end of inductance L2, the second end of inductance L2 with Power ground is connected；
Or further include resistance R10, the first end of resistance R10 is connected with the power input VDD of frequency chip U5, resistance R10's Second end is connected with the positive VBUS of USB interface.
7. direct-type automobile tire pressure monitoring system according to claim 1, which is characterized in that wireless receiving module packet Include wireless chip U8, the signal end RF_IN1_B of the wireless chip U8 first end with the first end of capacitor C43 and inductance L4 respectively Be connected, the second end of capacitor C43 is connected with power ground, the second end of inductance L4 respectively with the first end of capacitor C37 and capacitor C44 First end be connected, the second end of capacitor C44 is connected with power ground, the second end of capacitor C37 respectively with capacitor C38 first It holds, the first end of resistance R36 is connected with the collector of triode Q5, the second end and the first end phase of resistance R39 of capacitor C38 Even, the second end of resistance R39 is connected with the base stage of the first end of resistance R37, the first end of capacitor C39 and triode Q5 respectively, The emitter of triode Q5 is connected with power ground, the second end of resistance R37 respectively with the first end of resistance R32, resistance R36 Two ends, capacitor C35 first end be connected with the first end of capacitor C36, the second end point of the second end of capacitor C35 and capacitor C36 Be not connected with power ground, the second end of resistance R32 is connected with the first end of inductance L3, the second end of inductance L3 respectively with capacitor The first end of C28, the first end of capacitor C31, the first end of capacitor C32 are connected with the collector of triode Q4, and the of capacitor C28 The second end at two ends, the second end of capacitor C31 and capacitor C32 is connected with power ground respectively, the base stage of triode Q4 respectively with electricity The first end of resistance R27 is connected with the first end of resistance R28, the second end of resistance R28 and the power control terminal P23 of wireless chip U8 It is connected, the second end of resistance R27 is connected with the voltage output end OUT of the emitter of triode Q4 and voltage chips U3 respectively, electricity Hold C39 second end be connected respectively with the first end of the first end of capacitor C41 and inductance L5, the second end of inductance L5 respectively with electricity The first end for holding C42 is connected with antenna ANT1, and the second end of capacitor C41 and the second end of capacitor C42 are connected with power ground respectively.
8. direct-type automobile tire pressure monitoring system according to claim 1, which is characterized in that automobile tyre pressure check without Line sending module includes chip U1, and chip U1's restarts reset terminalIt is connected with the first end of resistance R2, the of resistance R2 Two ends and the first end of resistance R3, the first end of resistance R4, the first end of capacitor C2, the first end of capacitor C3, capacitor C4 the One end, the first end of inductance L2, chip U1 the power voltage terminal VDD of power voltage terminal VDDA and chip U1 be connected, resistance R3 Second end be connected with the mode end BKGD/PTA4 of chip U1, the second end of capacitor C2, the second end of capacitor C3 and capacitor C4 Second end is connected with power ground respectively, and the second end of resistance R4 is connected with the anode of button cell, the cathode and electricity of button cell Source it is connected；The second end of the inductance L2 radio-frequency energy with the first end of capacitor C5, the first end of capacitor C7 and chip U1 respectively Hold RF be connected, the second end of capacitor C5 is connected with power ground, the second end of capacitor C7 respectively with the first end and inductance of capacitor C8 The first end of L4 is connected, and the second end of inductance L4 is connected with power ground, and the second end of capacitor C8 is connected with antenna A1；Chip U1's Internal rectifier terminal VREG is connected with the first end of capacitor C6, and the second end of capacitor C6 is connected with power ground, the ground terminal of chip U1 The RF ground terminal RFVSS of VSS, the ground terminal VSSA of chip U1 and chip U1 are connected with power ground respectively, the crystal oscillator of chip U1 One end X1 is connected with the first end of inductance L3, the second end of the inductance L3 crystalline substance with the first end of capacitor C9 and crystal oscillator chip X1 respectively Shake first end X1 be connected, the second end of capacitor C9 is connected with power ground, the crystal oscillator second end X0 of chip U1 and respectively with capacitor The first end of C10 is connected with the crystal oscillator second end X2 of crystal oscillator chip X1, and the second end of capacitor C10 is connected with power ground；Chip U1 Low frequency reception end LFA be connected respectively with the first end of the first end of resistance R1, the first end of capacitor C1 and inductance L1, chip U1 Low frequency reception end LFB be connected respectively with the second end of the second end of resistance R1, the second end of capacitor C1 and inductance L1.
9. direct-type automobile tire pressure monitoring system according to claim 1, which is characterized in that alarm module includes bee Ring device BZ1, and the positive terminal of buzzer BZ1 is negative with the first end of resistance R38, the first end of capacitor C40 and diode D8 respectively Extremely it is connected, the second end of resistance R38 is connected with the voltage output end OUT of voltage chips U3, the second end and power ground of capacitor C40 It is connected, the negative pole end of buzzer BZ1 is connected with the collector of the anode of diode D8 and triode Q6 respectively, the hair of triode Q6 Emitter-base bandgap grading is connected with power ground, and the base stage of triode Q6 is connected with the first end of resistance R42, the second end and controller of resistance R42 Warning output end be connected.
10. direct-type automobile tire pressure monitoring system according to claim 1, which is characterized in that further include power supply The power input of two output modules, the second output module of power supply is connected with the power output end of the first output module of power supply, electricity The control signal of the second output module of source is connected with the power supply control signal LCD_V of controller；The power supply second exports Module includes triode Q2, and the emitter of triode Q2 is connected with the voltage output end OUT of voltage chips U3, the base of triode Q2 Pole is connected with the first end of resistance R8, and the second end of resistance R8 is connected with the power supply control signal LCD_V of controller；
It or/and further include display screen power supply module, the power supply control signal of display screen power supply module and the power supply control of controller Input terminal LCD_B processed is connected, the power output end phase of the power input and the first output module of power supply of display screen power supply module Even；Display screen power supply module includes triode Q3, and the collector of triode Q3 is connected with the first end of resistance R20, triode Q3 Emitter be connected with the voltage output end OUT of voltage chips U3, the base stage of triode Q3 is connected with the first end of resistance R21, The second end of resistance R21 is connected with the power supply control signal LCD_B of controller；
It or/and further include controller work indicating module, the indication signal input terminal and controller of controller work indicating module Indication signal output end STATUS_LED be connected, controller work indicating module power input and power supply first export mould The power output end of block is connected；Controller work indicating module includes light emitting diode D9, anode and the electricity of light emitting diode D9 The voltage output end OUT of chip U3 is pressed to be connected, the cathode of light emitting diode D9 is connected with the first end of resistance R43, resistance R43's Second end is connected with the indication signal output end STATUS_LED of controller；
Or/and further include controller wake-up module, the wake-up of the wake-up signal output end and controller of controller wake-up module is believed Number input terminal WKUP is connected, the power output end phase of the power input and the first output module of power supply of controller wake-up module Even；Controller wake-up module includes resistance R46, and the first end of resistance R46 is connected with the voltage output end OUT of voltage chips U3, The second end of resistance R46 is connected with the wake-up signal input terminal WKUP of the first end of vibration switch R45 and controller respectively, vibration The second end of switch R45 is connected with power ground；
Or/and further include controller resetting module, the signal output end of controller resetting module and the reset signal of controller are defeated Enter end to be connected, the power input of controller resetting module is connected with the power output end of the first output module of power supply；Controller Resetting module includes reset button RST1, the first end of the reset button RST1 first end phase with power ground and capacitor C58 respectively Even, the second end of reset button RST1 is believed with the resetting of the second end of capacitor C58, the first end of resistance R44 and controller respectively Number input terminal is connected, and the second end of resistance R44 is connected with the voltage output end OUT of voltage chips U3；
It or/and further include solar recharging detection module, the detection input and solar energy module of solar recharging detection module Power output end be connected, the detection output of solar recharging detection module and the solar recharging detection input of controller SOLAR_SAMPLE is connected, and solar recharging detection module includes resistance R11, resistance R12, resistance R17 and capacitor C14, resistance The first end of R11 is connected with the anode of diode D3, the second end of resistance R11 respectively with the first end of resistance R12 and resistance R17 First end be connected, the second end of resistance R17 is connected with power ground, the second end of the resistance R12 first end with capacitor C14 respectively It is connected with the solar recharging detection input SOLAR_SAMPLE of controller, the second end of capacitor C14 is connected with power ground；
It or/and further include USB charging detecting model, the detection input of USB charging detecting model and the anode of USB interface USB1 VBUS is connected, the detection output and the USB charging detection input USB_SAMPLE phase of controller of USB charging detecting model Even, USB charging detecting model includes resistance R15, resistance R16, resistance R19 and capacitor C16, and first end and the USB of resistance R15 connects The positive VBUS of mouthful USB1 is connected, the second end of the resistance R15 first end phase with the first end of resistance R16 and resistance R19 respectively Even, the second end of resistance R19 is connected with power ground, the second end of resistance R16 respectively with the first end of capacitor C16 and controller USB charges, and detection input USB_SAMPLE is connected, and the second end of capacitor C16 is connected with power ground；
It or/and further include lithium battery electric power detection module, the detection input and lithium of lithium battery electric power detection module The anode of battery is connected, and the detection output of lithium battery electric power detection module and the electric quantity of lithium battery of controller are detected and inputted BAT_SAMPLE is held to be connected, lithium battery electric power detection module includes resistance R13, resistance R14, resistance R18 and capacitor C15, The first end of resistance R13 is connected with the anode of lithium battery, the second end of resistance R13 respectively with the first end and resistance of resistance R14 The first end of R18 is connected, and the second end of resistance R18 is connected with power ground, the second end of resistance R14 respectively with capacitor C15 the One end is connected with the electric quantity of lithium battery detection input BAT_SAMPLE of controller, and the second end of capacitor C15 is connected with power ground.
CN201821802095.9U 2018-11-02 2018-11-02 A kind of direct-type automobile tire pressure monitoring system Active CN209079562U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109177663A (en) * 2018-11-02 2019-01-11 重庆栋能科技股份有限公司 A kind of direct-type automobile tire pressure monitoring system and its method
CN110638436A (en) * 2019-09-23 2020-01-03 重庆医药高等专科学校 Medical data acquisition system based on single chip microcomputer
CN110881172A (en) * 2019-10-08 2020-03-13 中信戴卡股份有限公司 Method, device and equipment for dynamically monitoring working state of vehicle and storage medium

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109177663A (en) * 2018-11-02 2019-01-11 重庆栋能科技股份有限公司 A kind of direct-type automobile tire pressure monitoring system and its method
CN109177663B (en) * 2018-11-02 2023-09-08 重庆栋能科技股份有限公司 Direct type automobile tire pressure monitoring system and method thereof
CN110638436A (en) * 2019-09-23 2020-01-03 重庆医药高等专科学校 Medical data acquisition system based on single chip microcomputer
CN110638436B (en) * 2019-09-23 2022-03-11 重庆医药高等专科学校 Medical data acquisition system based on single chip microcomputer
CN110881172A (en) * 2019-10-08 2020-03-13 中信戴卡股份有限公司 Method, device and equipment for dynamically monitoring working state of vehicle and storage medium

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