CN112776742A - Automobile central control display screen system - Google Patents
Automobile central control display screen system Download PDFInfo
- Publication number
- CN112776742A CN112776742A CN202011524428.8A CN202011524428A CN112776742A CN 112776742 A CN112776742 A CN 112776742A CN 202011524428 A CN202011524428 A CN 202011524428A CN 112776742 A CN112776742 A CN 112776742A
- Authority
- CN
- China
- Prior art keywords
- terminal
- capacitor
- resistor
- power supply
- ground
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Human Computer Interaction (AREA)
- Mechanical Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention provides an automobile central control display screen system, which comprises: the device comprises a power supply voltage stabilizing module, an illumination driving module, a control module, a decoding chip and a display screen; the power supply voltage stabilizing module is connected with the illumination driving module, the control module, the decoding chip and the display screen; the lighting driving module is connected with the control module and the display screen; the control module is connected with the decoding chip and the display screen; the decoding chip is connected with the display screen; the power supply voltage stabilization module includes: the power supply comprises a first power supply voltage stabilizing module, a second power supply voltage stabilizing module, a third power supply voltage stabilizing module, a fourth power supply voltage stabilizing module and a fifth power supply voltage stabilizing module; the first power supply voltage stabilizing module is connected with the second power supply voltage stabilizing module, the third power supply voltage stabilizing module and the fifth power supply voltage stabilizing module, and the second power supply voltage stabilizing module is connected with the fourth power supply voltage stabilizing module. The invention effectively improves the stability of the central control display screen system by voltage stabilization treatment of the power supply of each module of the central control system of the automobile.
Description
Technical Field
The invention relates to the field of automobile display screens, in particular to an automobile central control display screen system.
Background
Thanks to the development of the mobile internet industry, the functions of the display screen in recent years become more powerful and more open, and the display screen can listen to music, watch movies and TV plays, and even play games. In addition to entertainment functions, more safeguards are also beginning to be provided for safe driving: reverse image, remote control, vehicle state parameter query, remote diagnosis and emergency rescue … …
In practical application, in order to ensure safe and reliable operation of the central control display screen of the automobile, certain requirements are required for power supply of each part module of the system, and high stability is required.
Disclosure of Invention
The invention aims to at least solve the technical problems in the prior art, and particularly provides a central control display screen system of an automobile.
In order to achieve the above object of the present invention, the present invention provides an automobile central control display screen system comprising: the device comprises a power supply voltage stabilizing module, an illumination driving module, a control module, a decoding chip and a display screen;
the power supply voltage stabilizing module is connected with the illumination driving module, the control module, the decoding chip and the display screen;
the lighting driving module is connected with the control module and the display screen;
the control module is connected with the decoding chip and the display screen;
the decoding chip is connected with the display screen;
the power supply voltage stabilization module includes: the power supply comprises a first power supply voltage stabilizing module, a second power supply voltage stabilizing module, a third power supply voltage stabilizing module, a fourth power supply voltage stabilizing module and a fifth power supply voltage stabilizing module;
the first power supply voltage stabilizing module is connected with the second power supply voltage stabilizing module, the third power supply voltage stabilizing module and the fifth power supply voltage stabilizing module, and the second power supply voltage stabilizing module is connected with the fourth power supply voltage stabilizing module.
Preferably, the first power supply voltage stabilizing module comprises a switching regulator U2:
a power input terminal VIN of the switching regulator U2 is connected to an input power P _ Battery, a first terminal of a capacitor C23, a first terminal of a capacitor C24, a first terminal of a capacitor C25, and a first terminal of a resistor R43, an enable terminal EN of the switching regulator U2 is connected to a second terminal of a resistor R43, a second terminal of a resistor R41, and a second terminal of a capacitor C9, a first terminal of a resistor R41 and a first terminal of a capacitor C9 are connected to a power ground, a resistor timing terminal RT/SYNC of the switching regulator U2 is connected to a first terminal of a resistor RT2, a soft start control terminal SS of the switching regulator U2 is connected to a first terminal of a capacitor Css1, a bootstrap terminal BOOT of the switching regulator U2 is connected to a first terminal of a resistor R9, a second terminal of a resistor R10 is connected to a first terminal of a capacitor C20, a regulator switching output terminal SW of the switching regulator U2 is connected to a second terminal of a capacitor C20, a first terminal of an inductor L4, a first terminal of an inductor L6867, and a first terminal L10 of a capacitor C4, The first end of the capacitor C15, the first end of the capacitor C13, the first end of the capacitor C11 and the first end of the resistor RFBT1 are connected, and a power supply VCC _5V is output outwards; a second terminal of the diode D2, a second terminal of the capacitor C10, a second terminal of the capacitor C15, a second terminal of the capacitor C13, and a second terminal of the capacitor C11 are connected to a power ground, a feedback input terminal FB of the switching regulator U2 is connected to a second terminal of the resistor RFBT1 and a first terminal of the resistor RFBT2, a heat dissipation terminal Thermal Pad of the switching regulator U2, a ground terminal GND of the switching regulator U2, a second terminal of the capacitor C23, a second terminal of the capacitor C24, a second terminal of the capacitor C25, a second terminal of the resistor RT2, a second terminal of the capacitor Css1, and a second terminal of the resistor RFBT2 are connected to the power ground.
And converting the external power supply P _ Battery of 12V into an internal regulated power supply VCC _5V of 5V.
Preferably, the second power supply voltage stabilizing module comprises a switching regulator U1:
a power supply VCC _5V of the first power supply voltage stabilizing module is connected with a first end of an inductor L15, a power supply input end VIN of the switching regulator U1 is connected with a second end of the inductor L15, a first end of a capacitor C105, a first end of a capacitor C17, a first end of a capacitor C18, a first end of a resistor R18, a second end of the capacitor C105 and a second end of a capacitor C17, a second end of the capacitor C18 is connected with a power ground, an enable end EN of the switching regulator U1 is connected with a second end of the resistor R17, a first end of the resistor R17 is connected with the control module, a power supply normal indication end PG of the switching regulator U1 is connected with a second end of the resistor R18, a switching value output end SW of the switching regulator U1 is connected with a first end of the inductor L36, an output end OUT of the switching regulator U1 is connected with a second end of the inductor L36, a first end of the capacitor C19, a first end of the capacitor C21, a first end of the capacitor C22, and a first end of the resistor RFBT3, and a power supply FPD _3.3V is output outwards; a second end of the capacitor C19, a second end of the capacitor C21, and a second end of the capacitor C22 are connected to a power ground, a feedback end FB of the switching regulator U1 is connected to a second end of the resistor RFBT3 and a first end of the resistor RFBB1, a second end of the resistor RFBB1 is connected to the power ground, and a power ground PGND of the switching regulator U1 and an analog ground AGND of the switching regulator U1 are connected to the power ground;
and converting the 5V internal stabilized voltage power VCC _5V into a 3.3V power FPD _3.3V power supply required by a video decoding chip.
Preferably, the second power supply voltage stabilizing module further comprises a switching regulator U9:
a power input terminal VIN of the switching regulator U9 is connected to the second terminal of the inductor L33, the first terminal of the capacitor C27, the first terminal of the capacitor C83, the first terminal of the capacitor C84, and the first terminal of the resistor R20, a first end of an inductor L33 is connected with a power supply VCC _5V, a second end of a capacitor C27, a second end of a capacitor C83 and a second end of a capacitor C84 are connected with a power supply ground, an enable end EN of a switching regulator U9 is connected with a second end of a resistor R19, a first end of a resistor R19 is connected with a control module, a power supply normal indication end PG of the switching regulator U9 is connected with a second end of the resistor R20, a switching value output end SW of the switching regulator U9 is connected with a first end of the inductor L32, an output end OUT of the switching regulator U9 is connected with a second end of the inductor L32, a first end of a capacitor C89, a first end of a capacitor C90, a first end of a capacitor C92 and a first end of a resistor RFBT4, and a power supply TFT _3.3V is output outwards; a second end of the capacitor C89, a second end of the capacitor C90, and a second end of the capacitor C92 are connected to a power ground, a feedback end FB of the switching regulator U9 is connected to a second end of the resistor RFBT4 and a first end of the resistor RFBB2, a second end of the resistor RFBB2 is connected to the power ground, and a power ground PGND of the switching regulator U9 and an analog ground AGND of the switching regulator U9 are connected to the power ground;
and converting the 5V internal stabilized voltage VCC _5V into 3.3V power supply TFT _3.3V required by the display screen.
Preferably, the third power supply voltage stabilizing module comprises a low dropout regulator U5:
a power input end IN of a low dropout regulator U5 is connected with a second end of an inductor L34, a first end of a capacitor C93 and a first end of a capacitor C94, the first end of the inductor L34 is connected with a power VCC _5V, a second end of a capacitor C93 and a second end of a capacitor C94 are connected with a power ground, an enable end EN of the low dropout regulator U5 is connected with a second end of a resistor R21, the first end of the resistor R21 is connected with a control module, an output end OUT of the low dropout regulator U5 is connected with a first end of a capacitor C104 and a first end of a capacitor C95, and a power TP _3.3V is output outwards; the second terminal of the capacitor C104 and the second terminal of the capacitor C95 are connected to the power ground, and the ground terminal GND of the low dropout regulator U5 is connected to the power ground.
And converting the 5V internal stabilized voltage power VCC _5V into a 3.3V power TP _3.3V power supply of the touch screen.
Preferably, the fourth power supply voltage stabilizing module comprises a low dropout regulator U3:
a power input terminal IN of the low dropout regulator U3 is connected to the second terminal of the diode D3, the first terminal of the capacitor C26, and the first terminal of the resistor R44, the first terminal of the diode D3 is connected to the second terminal of the inductor L5, the first terminal of the inductor L5 is connected to the power supply FPD _3.3V, the second terminal of the capacitor C26 is connected to the power ground, the enable terminal EN of the low dropout regulator U3 is connected to the second terminal of the resistor R44, the output terminal OUT of the low dropout regulator U3 is connected to the first terminal of the resistor RFBT5 and the first terminal of the capacitor C29, and the power supply FPD _1.2V is output to the outside, the feedback terminal FB of the low dropout regulator U3 is connected to the second terminal of the resistor RFBT5, and the ground terminal GND of the low dropout regulator U3 and the second terminal of the capacitor C29 are connected to the power ground.
And converting the 3.3V power supply FPD _3.3V of the video decoding chip into the 1.2V power supply FPD _1.2V of the video decoding chip.
Preferably, the fifth power supply voltage stabilizing module comprises a low dropout regulator U6:
a power input end VIN of the low dropout regulator U6 is connected with a second end of an inductor L35, a first end of a resistor R23, a first end of a capacitor C106 and a first end of a capacitor C96, the first end of the inductor L35 is connected with a power supply P _ Battery, a reset delay timer end REDLAY of the low dropout regulator U6 is connected with a second end of a capacitor C98, an oscillator end ROSC of the low dropout regulator U6 is connected with a second end of the resistor R22,
the ground terminal GND of the low dropout regulator U6, the first terminal of the capacitor C98, the second terminal of the capacitor C96, the first terminal of the resistor R22, and the second terminal of the capacitor C106 are connected to ground,
an enable end EN of the low dropout regulator U6 is connected with a second end of the resistor R23, a power output end VOUT of the low dropout regulator U6 is connected with a first end of the resistor R33, a first end of the capacitor C99, a first end of the capacitor C100 and a first end of the capacitor C101, and a power supply VCC _3.3V is output outwards; the second terminal of the capacitor C99, the second terminal of the capacitor C100 and the second terminal of the capacitor C101 are connected to the power ground,
the watchdog service end WD of the low dropout regulator U6 is connected with the second end of the resistor R70 and the first end of the resistor R72, the first end of the resistor R70 and the first end of the capacitor C102 are connected with the power ground, the second end of the resistor R72 and the second end of the capacitor C102 are connected with the control module, the watchdog enabling end nWD _ EN, the second end of the resistor R33 and the first end of the resistor R71 of the low dropout regulator U6 are connected with the control module, and the second end of the resistor R71 is connected with the power ground.
The 12V external power supply P _ Battery is converted into a 3.3V power supply VCC _3.3V required by the control module, the fifth power supply voltage stabilizing module also provides a watchdog reset function, and when the chip is abnormal, the chip is reset and restarted.
Preferably, the lighting driver module comprises a lighting driver U7:
a power input terminal VIN of the lighting driver U7 is connected to the power supply P _ Battery, a first terminal of a capacitor C72, a first terminal of a capacitor C12, a first terminal of a capacitor C107, and a first terminal of an inductor L12, a second terminal of a capacitor C72, a second terminal of a capacitor C12, and a second terminal of a capacitor C107 are connected to the power ground, a FAULT signal output terminal FAULT of the lighting driver U7 is connected to a second terminal of a resistor R12, a first terminal of a resistor R12 is connected to the controller, a PWM dimming input terminal PWM of the lighting driver U7 is connected to a second terminal of a resistor R11, a first terminal of a resistor R11 is connected to the controller, an input terminal VDDIO/EN of the lighting driver U7 is connected to a synchronous boost input terminal SYNC of the lighting driver U7, a second terminal of a resistor R14, a first terminal of the resistor R14 is connected to the controller 6866, a switching frequency setting resistor FSET terminal of the lighting driver U1 is connected to a first terminal ISET 7, the LDO internal output of the lighting driver U7 is connected to a first terminal of a capacitor C16,
a switching value output end SW of the lighting driver U7 is connected with a second end of the inductor L12, a first end of the diode D1 and a second end of the resistor R76, a first end of the resistor R76 is connected with a second end of the capacitor C103, a first end of the capacitor C103 is connected with a power ground, a second end of the diode D1 is connected with a first end of the capacitor C108, a first end of the capacitor C73, a first end of the capacitor C74, a first end of the capacitor C14, a first end of the capacitor CFB1 and a first end of the resistor RFT1, and outputs a signal LCD _ Backlight _ OUT +; the second terminal of the capacitor C108, the second terminal of the capacitor C73, the second terminal of the capacitor C74, and the second terminal of the capacitor C14 are coupled to ground, the second terminal of the resistor RFT1 is coupled to the first terminal of the resistor RFT2,
a feedback input terminal FB of the lighting driver U7 is connected to the second terminal of the capacitor CFB1, the second terminal of the resistor RFT2, and the first terminal of the resistor RFB1, the second terminal of the resistor RFB1 is connected to a power ground, an output terminal OUT1 of the lighting driver U7 is connected to the display screen, an output terminal OUT2 of the lighting driver U7 is connected to the display screen, an output terminal OUT3 of the lighting driver U7 is connected to the display screen, an output terminal OUT4 of the lighting driver U7 is connected to the display screen, a ground terminal PGND of the lighting driver U7, a ground terminal GND of the lighting driver U7, a chip hot Pad terminal Pad of the lighting driver U7, a second terminal of the resistor RFSET1, a second terminal of the resistor RISET1, and a second terminal of the capacitor C16 is connected to the power ground.
And stable current voltage is provided for illumination so that the illumination works normally.
Preferably, the display screen comprises a touch screen connector CN1, a screen backlight connector CN5, a screen signal connector CN 4:
a ground terminal GND of the touch screen connector CN1 is connected to a power ground, a power terminal VDD of the touch screen connector CN1 is connected to a second terminal of an inductor L16, a first terminal of a resistor R39, a first terminal of a diode ESD9 and a first terminal of a capacitor C1, a first terminal of an inductor L16 is connected to a power TP _3.3V, a reset terminal XRES of the touch screen connector CN1 is connected to a second terminal of a resistor R40, a first terminal of a capacitor C4 and a first terminal of a diode ESD8, a first terminal of a resistor R40 is connected to the controller, a second terminal of a capacitor C4 is connected to the power ground, a second terminal of a diode ESD8 is connected to the power ground, and a ground terminal GND of the touch screen connector CN1 is connected to the power ground;
an illumination terminal LEDA1 of the screen backlight connector CN5 is connected to the second terminal of the inductor L27, the first terminal of the capacitor C7, an illumination terminal LEDA2 of the screen backlight connector CN5, an illumination terminal LEDA3 of the screen backlight connector CN5, an illumination terminal LEDA4 of the screen backlight connector CN5, a first terminal of the inductor L27 is connected to the illumination driver module, a second terminal of the capacitor C7 is connected to power ground, a temperature-sensitive terminal NCT1 of the screen backlight connector CN5 is connected to the second terminal of the resistor R42, the second terminal of the resistor R3, the first terminal of the capacitor C3, a first terminal of the resistor R3 is connected to VCC _3.3V, a first terminal of the resistor R3 is connected to the control module, a temperature-sensitive terminal NCT 3 of the screen backlight connector CN 3, a second terminal of the capacitor C3 is connected to power ground, a second terminal of the illumination terminal LEDA3 of the backlight connector CN 3 is connected to the inductor L, a second terminal of the capacitor C3 is connected to power ground, a second terminal of the inductor L3, a second terminal of the illumination terminal 3 is connected,
the lighting terminal LEDK3 of the screen backlight connector CN5 is connected to the second terminal of the inductor L29 and the first terminal of the capacitor C86, the first terminal of the inductor L29 is connected to the lighting driving module, the second terminal of the capacitor C86 is connected to the power ground,
the lighting terminal LEDK2 of the screen backlight connector CN5 is connected to the second terminal of the inductor L30 and the first terminal of the capacitor C87, the first terminal of the inductor L30 is connected to the lighting driving module, the second terminal of the capacitor C87 is connected to the power ground,
the lighting terminal LEDK1 of the screen backlight connector CN5 is connected to the second terminal of the inductor L31 and the first terminal of the capacitor C88, the first terminal of the inductor L31 is connected to the lighting driving module, the second terminal of the capacitor C88 is connected to the power ground,
the ground terminal PADGND of the panel backlight connector CN5 is connected to the power ground.
The display screen comprises a touch screen and a liquid crystal screen, wherein the touch screen covers the liquid crystal screen, the liquid crystal screen has a display function, and the touch screen has a touch control function. The screen signal connector CN4 has a sleep mode, pulling up for normal operation. Pulling low is dormant.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
through the voltage stabilization treatment of each module power supply of the automobile central control display screen system, the stability of the central control display screen system is effectively improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a partial circuit diagram of a first power regulator module according to the present invention;
FIG. 3 is a partial circuit diagram of a first power regulator module according to the present invention;
FIG. 4 is a circuit diagram of a second power regulator module according to the present invention;
FIG. 5 is a circuit diagram of a third power regulator module according to the present invention;
FIG. 6 is a circuit diagram of a fourth power regulator module according to the present invention;
FIG. 7 is a partial circuit diagram of a fifth power regulator module according to the present invention;
FIG. 8 is a partial circuit diagram of a fifth power regulator module according to the present invention;
FIG. 9 is a circuit diagram of the lighting driver module of the present invention;
FIG. 10 is a circuit diagram of the control module of the present invention;
FIG. 11 is a circuit diagram of the decoding chip of the present invention;
FIG. 12 is a circuit diagram of a touch screen connector of the present invention;
FIG. 13 is a circuit diagram of a panel backlight connector of the present invention;
fig. 14 is a circuit diagram of the screen signal connector of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The invention provides an automobile central control display screen system, as shown in figure 1, comprising: the device comprises a power supply voltage stabilizing module, an illumination driving module, a control module, a decoding chip and a display screen;
the power supply voltage stabilizing module is connected with the illumination driving module, the control module, the decoding chip and the display screen;
the lighting driving module is connected with the control module and the display screen;
the control module is connected with the decoding chip and the display screen;
the decoding chip is connected with the display screen;
the power supply voltage stabilization module includes: the power supply comprises a first power supply voltage stabilizing module, a second power supply voltage stabilizing module, a third power supply voltage stabilizing module, a fourth power supply voltage stabilizing module and a fifth power supply voltage stabilizing module;
the first power supply voltage stabilizing module is connected with the second power supply voltage stabilizing module, the third power supply voltage stabilizing module and the fifth power supply voltage stabilizing module, and the second power supply voltage stabilizing module is connected with the fourth power supply voltage stabilizing module.
The control module comprises an MCU.
Preferably, as shown in fig. 2-3, the first power supply voltage stabilization module includes a switching regulator U2:
the POWER supply is connected with a first end of a transient diode TVS1, a first end of a diode D6, a first end of a diode D7 and a first end of a diode D8, a second end of the transient diode TVS1 is connected with a POWER ground, a second end of a diode D6, a second end of a diode D7 and a second end of a diode D8 are connected with a first end of a capacitor C91, a first end of a capacitor C97 and a first end of an inductor L2, a second end of a capacitor C91 and a second end of a capacitor C97 are connected with the POWER ground, and a second end of the inductor L2 outputs a POWER P _ Batery;
a power input terminal VIN of the switching regulator U2 is connected to an input power P _ Battery, a first terminal of a capacitor C23, a first terminal of a capacitor C24, a first terminal of a capacitor C25, and a first terminal of a resistor R43, an enable terminal EN of the switching regulator U2 is connected to a second terminal of a resistor R43, a second terminal of a resistor R41, and a second terminal of a capacitor C9, a first terminal of a resistor R41 and a first terminal of a capacitor C9 are connected to a power ground, a resistor timing terminal RT/SYNC of the switching regulator U2 is connected to a first terminal of a resistor RT2, a soft start control terminal SS of the switching regulator U2 is connected to a first terminal of a capacitor Css1, a bootstrap terminal BOOT of the switching regulator U2 is connected to a first terminal of a resistor R9, a second terminal of a resistor R10 is connected to a first terminal of a capacitor C20, a regulator switching output terminal SW of the switching regulator U2 is connected to a second terminal of a capacitor C20, a first terminal of an inductor L4, a first terminal of an inductor L6867, and a first terminal L10 of a capacitor C4, The first end of the capacitor C15, the first end of the capacitor C13, the first end of the capacitor C11 and the first end of the resistor RFBT1 are connected, and a power supply VCC _5V is output outwards; a second terminal of the diode D2, a second terminal of the capacitor C10, a second terminal of the capacitor C15, a second terminal of the capacitor C13, and a second terminal of the capacitor C11 are connected to a power ground, a feedback input terminal FB of the switching regulator U2 is connected to a second terminal of the resistor RFBT1 and a first terminal of the resistor RFBT2, a heat dissipation terminal Thermal Pad of the switching regulator U2, a ground terminal GND of the switching regulator U2, a second terminal of the capacitor C23, a second terminal of the capacitor C24, a second terminal of the capacitor C25, a second terminal of the resistor RT2, a second terminal of the capacitor Css1, and a second terminal of the resistor RFBT2 are connected to the power ground.
And converting the external power supply P _ Battery of 12V into an internal regulated power supply VCC _5V of 5V.
The switching regulator U2 is of a model LMR14020SSQDD, the inductor L4 is of a model VLS6045EX-100M-H, and the resistances of the resistors RFBT1 and RFBT2 are respectively 100K and 17.8K; the model of the capacitor C23 is VEJ471M1ETR-1010L, the parameter of the capacitor C24 is 4.7uF-50V, and the parameter of the capacitor C25 is 10 nF-50V.
Preferably, as shown in fig. 4, the second power supply voltage stabilizing module includes a switching regulator U1:
a power supply VCC _5V of the first power supply voltage stabilizing module is connected with a first end of an inductor L15, a power supply input end VIN of the switching regulator U1 is connected with a second end of the inductor L15, a first end of a capacitor C105, a first end of a capacitor C17, a first end of a capacitor C18, a first end of a resistor R18, a second end of the capacitor C105 and a second end of a capacitor C17, a second end of the capacitor C18 is connected with a power ground, an enable end EN of the switching regulator U1 is connected with a second end of the resistor R17, a first end of the resistor R17 is connected with the control module, a power supply normal indication end PG of the switching regulator U1 is connected with a second end of the resistor R18, a switching value output end SW of the switching regulator U1 is connected with a first end of the inductor L36, an output end OUT of the switching regulator U1 is connected with a second end of the inductor L36, a first end of the capacitor C19, a first end of the capacitor C21, a first end of the capacitor C22, and a first end of the resistor RFBT3, and a power supply FPD _3.3V is output outwards; a second end of the capacitor C19, a second end of the capacitor C21, and a second end of the capacitor C22 are connected to a power ground, a feedback end FB of the switching regulator U1 is connected to a second end of the resistor RFBT3 and a first end of the resistor RFBB1, a second end of the resistor RFBB1 is connected to the power ground, and a power ground PGND of the switching regulator U1 and an analog ground AGND of the switching regulator U1 are connected to the power ground;
and converting the 5V internal stabilized voltage power VCC _5V into a 3.3V power FPD _3.3V power supply required by a video decoding chip.
The model of the switching regulator U1 is MPQ2171GJ-AEC1, the model of the inductor L15 is MPZ1608S601ATD25, the model of the inductor L36 is TFM252010GHMA2R2MTAA, and the resistances of the resistors RFBT3 and RFBB1 are 45.3K and 10K respectively.
Preferably, as shown in fig. 5, the second power supply voltage stabilizing module further includes a switching regulator U9:
a power input terminal VIN of the switching regulator U9 is connected to the second terminal of the inductor L33, the first terminal of the capacitor C27, the first terminal of the capacitor C83, the first terminal of the capacitor C84, and the first terminal of the resistor R20, a first end of an inductor L33 is connected with a power supply VCC _5V, a second end of a capacitor C27, a second end of a capacitor C83 and a second end of a capacitor C84 are connected with a power supply ground, an enable end EN of a switching regulator U9 is connected with a second end of a resistor R19, a first end of a resistor R19 is connected with a control module, a power supply normal indication end PG of the switching regulator U9 is connected with a second end of the resistor R20, a switching value output end SW of the switching regulator U9 is connected with a first end of the inductor L32, an output end OUT of the switching regulator U9 is connected with a second end of the inductor L32, a first end of a capacitor C89, a first end of a capacitor C90, a first end of a capacitor C92 and a first end of a resistor RFBT4, and a power supply TFT _3.3V is output outwards; a second end of the capacitor C89, a second end of the capacitor C90, and a second end of the capacitor C92 are connected to a power ground, a feedback end FB of the switching regulator U9 is connected to a second end of the resistor RFBT4 and a first end of the resistor RFBB2, a second end of the resistor RFBB2 is connected to the power ground, and a power ground PGND of the switching regulator U9 and an analog ground AGND of the switching regulator U9 are connected to the power ground;
and converting the 5V internal stabilized voltage VCC _5V into 3.3V power supply TFT _3.3V required by the display screen.
The model of the switching regulator U9 is MPQ2171GJ-AEC1, the model of the inductor L33 is MPZ1608S601ATD25, the model of the inductor L32 is TFM252010GHMA2R2MTAA, and the resistances of the resistors RFBT4 and RFBB2 are 45.3K and 10K respectively.
Preferably, as shown in fig. 6, the third power supply voltage stabilizing module includes a low dropout regulator U5:
a power input end IN of a low dropout regulator U5 is connected with a second end of an inductor L34, a first end of a capacitor C93 and a first end of a capacitor C94, the first end of the inductor L34 is connected with a power VCC _5V, a second end of a capacitor C93 and a second end of a capacitor C94 are connected with a power ground, an enable end EN of the low dropout regulator U5 is connected with a second end of a resistor R21, the first end of the resistor R21 is connected with a control module, an output end OUT of the low dropout regulator U5 is connected with a first end of a capacitor C104 and a first end of a capacitor C95, and a power TP _3.3V is output outwards; the second terminal of the capacitor C104 and the second terminal of the capacitor C95 are connected to the power ground, and the ground terminal GND of the low dropout regulator U5 is connected to the power ground.
And converting the 5V internal stabilized voltage power VCC _5V into a 3.3V power TP _3.3V power supply of the touch screen.
The low dropout regulator U5 is in a type of TLV70233QDBVRQ1, the inductor L34 is in a type of MPZ1608S601ATD25, the capacitor C93 is in a parameter range of 10uF-10V, the capacitor C94 is in a parameter range of 100nF-50V, the capacitor C95 is in a parameter range of 10uF-10V, the capacitor C104 is in a parameter range of 100nF-50V, and the resistor R21 is 1.2K.
Preferably, as shown in fig. 7, the fourth power supply voltage stabilizing module includes a low dropout regulator U3:
a power input terminal IN of the low dropout regulator U3 is connected to the second terminal of the diode D3, the first terminal of the capacitor C26, and the first terminal of the resistor R44, the first terminal of the diode D3 is connected to the second terminal of the inductor L5, the first terminal of the inductor L5 is connected to the power supply FPD _3.3V, the second terminal of the capacitor C26 is connected to the power ground, the enable terminal EN of the low dropout regulator U3 is connected to the second terminal of the resistor R44, the output terminal OUT of the low dropout regulator U3 is connected to the first terminal of the resistor RFBT5 and the first terminal of the capacitor C29, and the power supply FPD _1.2V is output to the outside, the feedback terminal FB of the low dropout regulator U3 is connected to the second terminal of the resistor RFBT5, and the ground terminal GND of the low dropout regulator U3 and the second terminal of the capacitor C29 are connected to the power ground.
And converting the 3.3V power supply FPD _3.3V of the video decoding chip into the 1.2V power supply FPD _1.2V of the video decoding chip.
The model of the low dropout regulator U3 is TPS73601QDBVRQ1, the model of the inductor L5 is MPZ1608S601ATD25, the model of the diode D3 is S-FMAF407, the parameters of the capacitors C26 and C29 are 10uF-10V, and the resistance values of the resistors R44 and RFBT5 are 10K.
Preferably, as shown in fig. 8, the fifth power supply voltage stabilizing module includes a low dropout regulator U6:
a power input end VIN of the low dropout regulator U6 is connected with a second end of an inductor L35, a first end of a resistor R23, a first end of a capacitor C106 and a first end of a capacitor C96, the first end of the inductor L35 is connected with a power supply P _ Battery, a reset delay timer end REDLAY of the low dropout regulator U6 is connected with a second end of a capacitor C98, an oscillator end ROSC of the low dropout regulator U6 is connected with a second end of the resistor R22,
the ground terminal GND of the low dropout regulator U6, the first terminal of the capacitor C98, the second terminal of the capacitor C96, the first terminal of the resistor R22, and the second terminal of the capacitor C106 are connected to ground,
an enable end EN of the low dropout regulator U6 is connected with a second end of the resistor R23, a power output end VOUT of the low dropout regulator U6 is connected with a first end of the resistor R33, a first end of the capacitor C99, a first end of the capacitor C100 and a first end of the capacitor C101, and a power supply VCC _3.3V is output outwards; the second terminal of the capacitor C99, the second terminal of the capacitor C100 and the second terminal of the capacitor C101 are connected to the power ground,
the watchdog service end WD of the low dropout regulator U6 is connected with the second end of the resistor R70 and the first end of the resistor R72, the first end of the resistor R70 and the first end of the capacitor C102 are connected with the power ground, the second end of the resistor R72 and the second end of the capacitor C102 are connected with the control module, the watchdog enabling end nWD _ EN, the second end of the resistor R33 and the first end of the resistor R71 of the low dropout regulator U6 are connected with the control module, and the second end of the resistor R71 is connected with the power ground.
The 12V external power supply P _ Battery is converted into a 3.3V power supply VCC _3.3V required by the control module, the fifth power supply voltage stabilizing module also provides a watchdog reset function, and when the chip is abnormal, the chip is reset and restarted. Before sleeping, the watchdog enable WD _ EN is closed, and the leakage output is set.
The model of the low dropout regulator U6 is TPS7A6333QPWPRQ1, the model of the inductor L35 is MPZ1608S601ATD25, the model of the capacitor C106 is UCD1H220MCL1GS, and the parameters of the capacitor C99, the capacitor C100 and the capacitor C101 are 10 nF-50V.
Preferably, as shown in fig. 9, the lighting driver module includes a lighting driver U7:
a power input terminal VIN of the lighting driver U7 is connected to the power supply P _ Battery, a first terminal of a capacitor C72, a first terminal of a capacitor C12, a first terminal of a capacitor C107, and a first terminal of an inductor L12, a second terminal of a capacitor C72, a second terminal of a capacitor C12, and a second terminal of a capacitor C107 are connected to the power ground, a FAULT signal output terminal FAULT of the lighting driver U7 is connected to a second terminal of a resistor R12, a first terminal of a resistor R12 is connected to the controller, a PWM dimming input terminal PWM of the lighting driver U7 is connected to a second terminal of a resistor R11, a first terminal of a resistor R11 is connected to the controller, an input terminal VDDIO/EN of the lighting driver U7 is connected to a synchronous boost input terminal SYNC of the lighting driver U7, a second terminal of a resistor R14, a first terminal of the resistor R14 is connected to the controller 6866, a switching frequency setting resistor FSET terminal of the lighting driver U1 is connected to a first terminal ISET 7, the LDO internal output of the lighting driver U7 is connected to a first terminal of a capacitor C16,
a switching value output end SW of the lighting driver U7 is connected with a second end of the inductor L12, a first end of the diode D1 and a second end of the resistor R76, a first end of the resistor R76 is connected with a second end of the capacitor C103, a first end of the capacitor C103 is connected with a power ground, a second end of the diode D1 is connected with a first end of the capacitor C108, a first end of the capacitor C73, a first end of the capacitor C74, a first end of the capacitor C14, a first end of the capacitor CFB1 and a first end of the resistor RFT1, and outputs a signal LCD _ Backlight _ OUT +; the second terminal of the capacitor C108, the second terminal of the capacitor C73, the second terminal of the capacitor C74, and the second terminal of the capacitor C14 are coupled to ground, the second terminal of the resistor RFT1 is coupled to the first terminal of the resistor RFT2,
a feedback input terminal FB of the lighting driver U7 is connected to the second terminal of the capacitor CFB1, the second terminal of the resistor RFT2, and the first terminal of the resistor RFB1, the second terminal of the resistor RFB1 is connected to a power ground, an output terminal OUT1 of the lighting driver U7 is connected to the display screen, an output terminal OUT2 of the lighting driver U7 is connected to the display screen, an output terminal OUT3 of the lighting driver U7 is connected to the display screen, an output terminal OUT4 of the lighting driver U7 is connected to the display screen, a ground terminal PGND of the lighting driver U7, a ground terminal GND of the lighting driver U7, a chip hot Pad terminal Pad of the lighting driver U7, a second terminal of the resistor RFSET1, a second terminal of the resistor RISET1, and a second terminal of the capacitor C16 is connected to the power ground.
And stable current voltage is provided for illumination so that the illumination works normally.
The lighting driver U7 is of the model TPS61194PWPRQ1, the inductor L12 is of the model VLS6045EX-100M-H, the diode D1 is of the model NRVBA160T3G, the resistor RFSET1 is 45.3K, the resistor RISET1 is 43.2K, the resistor RFT1 is 560K, the resistor RFT2 is 130K, and the resistor RFB1 is 130K.
The model of the MCU is FS32K116LFT0VLFT, and the circuit is shown in FIG. 10.
The decoding chip is of a model DS90UB948TNKDxQ1_ TI, and is used for decoding information transmitted to a display screen, and the connection diagram is shown in FIG. 11.
Preferably, as shown in fig. 12 to 14, the display screen includes a touch screen connector CN1, a screen backlight connector CN5, a screen signal connector CN 4:
a ground terminal GND of the touch screen connector CN1 is connected to a power ground, a power terminal VDD of the touch screen connector CN1 is connected to a second terminal of an inductor L16, a first terminal of a resistor R39, a first terminal of a diode ESD9 and a first terminal of a capacitor C1, a first terminal of an inductor L16 is connected to a power TP _3.3V, a reset terminal XRES of the touch screen connector CN1 is connected to a second terminal of a resistor R40, a first terminal of a capacitor C4 and a first terminal of a diode ESD8, a first terminal of a resistor R40 is connected to the controller, a second terminal of a capacitor C4 is connected to the power ground, a second terminal of a diode ESD8 is connected to the power ground, and a ground terminal GND of the touch screen connector CN1 is connected to the power ground;
an illumination terminal LEDA1 of the screen backlight connector CN5 is connected to the second terminal of the inductor L27, the first terminal of the capacitor C7, an illumination terminal LEDA2 of the screen backlight connector CN5, an illumination terminal LEDA3 of the screen backlight connector CN5, an illumination terminal LEDA4 of the screen backlight connector CN5, a first terminal of the inductor L27 is connected to the illumination driver module, a second terminal of the capacitor C7 is connected to power ground, a temperature-sensitive terminal NCT1 of the screen backlight connector CN5 is connected to the second terminal of the resistor R42, the second terminal of the resistor R3, the first terminal of the capacitor C3, a first terminal of the resistor R3 is connected to VCC _3.3V, a first terminal of the resistor R3 is connected to the control module, a temperature-sensitive terminal NCT 3 of the screen backlight connector CN 3, a second terminal of the capacitor C3 is connected to power ground, a second terminal of the illumination terminal LEDA3 of the backlight connector CN 3 is connected to the inductor L, a second terminal of the capacitor C3 is connected to power ground, a second terminal of the inductor L3, a second terminal of the illumination terminal 3 is connected,
the lighting terminal LEDK3 of the screen backlight connector CN5 is connected to the second terminal of the inductor L29 and the first terminal of the capacitor C86, the first terminal of the inductor L29 is connected to the lighting driving module, the second terminal of the capacitor C86 is connected to the power ground,
the lighting terminal LEDK2 of the screen backlight connector CN5 is connected to the second terminal of the inductor L30 and the first terminal of the capacitor C87, the first terminal of the inductor L30 is connected to the lighting driving module, the second terminal of the capacitor C87 is connected to the power ground,
the lighting terminal LEDK1 of the screen backlight connector CN5 is connected to the second terminal of the inductor L31 and the first terminal of the capacitor C88, the first terminal of the inductor L31 is connected to the lighting driving module, the second terminal of the capacitor C88 is connected to the power ground,
the ground terminal PADGND of the panel backlight connector CN5 is connected to the power ground.
The display screen comprises a touch screen and a liquid crystal screen, wherein the touch screen covers the liquid crystal screen, the liquid crystal screen has a display function, and the touch screen has a touch control function. The screen signal connector CN4 has a sleep mode, pulling up for normal operation. Pulling low is dormant.
The model of the touch screen connector CN1 is 101049-201260, the model of the screen backlight connector CN5 is IMSA-12001S-12A-GFN1, and the model of the screen signal connector is CN4IMSA _11501S-50A-GFN 1; the model of the diode ESD8 and ESD9 is TPD1E05U06QDPYRQ1, and the model of the inductor L16, L27, L28, L29, L30 and L31 is TPD1E05U06QDPYRQ 1.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. An automobile central control display screen system, comprising: the device comprises a power supply voltage stabilizing module, an illumination driving module, a control module, a decoding chip and a display screen;
the power supply voltage stabilizing module is connected with the illumination driving module, the control module, the decoding chip and the display screen;
the lighting driving module is connected with the control module and the display screen;
the control module is connected with the decoding chip and the display screen;
the decoding chip is connected with the display screen;
the power supply voltage stabilization module includes: the power supply comprises a first power supply voltage stabilizing module, a second power supply voltage stabilizing module, a third power supply voltage stabilizing module, a fourth power supply voltage stabilizing module and a fifth power supply voltage stabilizing module;
the first power supply voltage stabilizing module is connected with the second power supply voltage stabilizing module, the third power supply voltage stabilizing module and the fifth power supply voltage stabilizing module, and the second power supply voltage stabilizing module is connected with the fourth power supply voltage stabilizing module.
2. The vehicle central control display screen system according to claim 1, wherein the first power supply voltage stabilizing module comprises a switching regulator U2:
a power input terminal VIN of the switching regulator U2 is connected to a power supply P _ Battery, a first terminal of a capacitor C23, a first terminal of a capacitor C24, a first terminal of a capacitor C25, and a first terminal of a resistor R43, an enable terminal EN of the switching regulator U2 is connected to a second terminal of a resistor R43, a second terminal of a resistor R41, and a second terminal of a capacitor C9, a first terminal of a resistor R41 and a first terminal of a capacitor C9 are connected to a power ground, a resistor timing terminal RT/SYNC of the switching regulator U2 is connected to a first terminal of a resistor RT2, a soft start control terminal SS of the switching regulator U2 is connected to a first terminal of a capacitor cs 1, a bootstrap terminal BOOT of the switching regulator U2 is connected to a first terminal of a resistor R10, a second terminal of a resistor R10 is connected to a first terminal of a capacitor C20, a regulator switching output terminal SW of a regulator U2 is connected to a second terminal of a capacitor C20, a first terminal of an inductor L4, a first terminal of a capacitor L2, and a first terminal of a capacitor C4, The first end of the capacitor C15, the first end of the capacitor C13, the first end of the capacitor C11 and the first end of the resistor RFBT1 are connected, and a power supply VCC _5V is output outwards; a second terminal of the diode D2, a second terminal of the capacitor C10, a second terminal of the capacitor C15, a second terminal of the capacitor C13, and a second terminal of the capacitor C11 are connected to a power ground, a feedback input terminal FB of the switching regulator U2 is connected to a second terminal of the resistor RFBT1 and a first terminal of the resistor RFBT2, a heat dissipation terminal Thermal Pad of the switching regulator U2, a ground terminal GND of the switching regulator U2, a second terminal of the capacitor C23, a second terminal of the capacitor C24, a second terminal of the capacitor C25, a second terminal of the resistor RT2, a second terminal of the capacitor Css1, and a second terminal of the resistor RFBT2 are connected to the power ground.
3. The vehicle central control display screen system according to claim 1, wherein the second power supply voltage stabilizing module comprises a switching regulator U1:
a power input terminal VIN of the switching regulator U1 is connected to the second terminal of the inductor L15, the first terminal of the capacitor C105, the first terminal of the capacitor C17, the first terminal of the capacitor C18, and the first terminal of the resistor R18, a first end of an inductor L15 is connected with a power supply VCC _5V, a second end of a capacitor C105, a second end of a capacitor C17 and a second end of a capacitor C18 are connected with a power supply ground, an enable end EN of a switching regulator U1 is connected with a second end of a resistor R17, a first end of a resistor R17 is connected with a control module, a power supply normal indication end PG of a switching regulator U1 is connected with a second end of a resistor R18, a switching value output end SW of the switching regulator U1 is connected with a first end of an inductor L36, an output end OUT of the switching regulator U1 is connected with a second end of an inductor L36, a first end of a capacitor C19, a first end of a capacitor C21, a first end of a capacitor C22 and a first end of a resistor RFBT3, and outputs a power supply FPD _3.3V outwards; the second terminal of the capacitor C19, the second terminal of the capacitor C21, and the second terminal of the capacitor C22 are connected to the power ground, the feedback terminal FB of the switching regulator U1 is connected to the second terminal of the resistor RFBT3 and the first terminal of the resistor RFBB1, the second terminal of the resistor RFBB1 is connected to the power ground, and the power ground terminal PGND of the switching regulator U1 and the analog ground terminal AGND of the switching regulator U1 are connected to the power ground.
4. The vehicle central control display screen system according to claim 3, wherein the second power supply voltage stabilizing module further comprises a switching regulator U9:
a power input terminal VIN of the switching regulator U9 is connected to the second terminal of the inductor L33, the first terminal of the capacitor C27, the first terminal of the capacitor C83, the first terminal of the capacitor C84, and the first terminal of the resistor R20, a first end of an inductor L33 is connected with a power supply VCC _5V, a second end of a capacitor C27, a second end of a capacitor C83 and a second end of a capacitor C84 are connected with a power supply ground, an enable end EN of a switching regulator U9 is connected with a second end of a resistor R19, a first end of a resistor R19 is connected with a control module, a power supply normal indication end PG of the switching regulator U9 is connected with a second end of the resistor R20, a switching value output end SW of the switching regulator U9 is connected with a first end of the inductor L32, an output end OUT of the switching regulator U9 is connected with a second end of the inductor L32, a first end of a capacitor C89, a first end of a capacitor C90, a first end of a capacitor C92 and a first end of a resistor RFBT4, and a power supply TFT _3.3V is output outwards; the second terminal of the capacitor C89, the second terminal of the capacitor C90, and the second terminal of the capacitor C92 are connected to the power ground, the feedback terminal FB of the switching regulator U9 is connected to the second terminal of the resistor RFBT4 and the first terminal of the resistor RFBB2, the second terminal of the resistor RFBB2 is connected to the power ground, and the power ground terminal PGND of the switching regulator U9 and the analog ground terminal AGND of the switching regulator U9 are connected to the power ground.
5. The vehicle central control display screen system according to claim 1, wherein the third power supply voltage stabilizing module comprises a low dropout regulator U5:
a power input end IN of a low dropout regulator U5 is connected with a second end of an inductor L34, a first end of a capacitor C93 and a first end of a capacitor C94, the first end of the inductor L34 is connected with a power VCC _5V, a second end of a capacitor C93 and a second end of a capacitor C94 are connected with a power ground, an enable end EN of the low dropout regulator U5 is connected with a second end of a resistor R21, the first end of the resistor R21 is connected with a control module, an output end OUT of the low dropout regulator U5 is connected with a first end of a capacitor C104 and a first end of a capacitor C95, and a power TP _3.3V is output outwards; the second terminal of the capacitor C104 and the second terminal of the capacitor C95 are connected to the power ground, and the ground terminal GND of the low dropout regulator U5 is connected to the power ground.
6. The vehicle central control display screen system according to claim 1, wherein the fourth power supply voltage stabilizing module comprises a low dropout regulator U3:
a power input terminal IN of the low dropout regulator U3 is connected to the second terminal of the diode D3, the first terminal of the capacitor C26, and the first terminal of the resistor R44, the first terminal of the diode D3 is connected to the second terminal of the inductor L5, the first terminal of the inductor L5 is connected to the power supply FPD _3.3V, the second terminal of the capacitor C26 is connected to the power ground, the enable terminal EN of the low dropout regulator U3 is connected to the second terminal of the resistor R44, the output terminal OUT of the low dropout regulator U3 is connected to the first terminal of the resistor RFBT5 and the first terminal of the capacitor C29, and the power supply FPD _1.2V is output to the outside, the feedback terminal FB of the low dropout regulator U3 is connected to the second terminal of the resistor RFBT5, and the ground terminal GND of the low dropout regulator U3 and the second terminal of the capacitor C29 are connected to the power ground.
7. The vehicle central control display screen system according to claim 1, wherein the fifth power supply voltage stabilizing module comprises a low dropout regulator U6:
a power input end VIN of the low dropout regulator U6 is connected with a second end of an inductor L35, a first end of a resistor R23, a first end of a capacitor C106 and a first end of a capacitor C96, the first end of the inductor L35 is connected with a power supply P _ Battery, a reset delay timer end REDLAY of the low dropout regulator U6 is connected with a second end of a capacitor C98, an oscillator end ROSC of the low dropout regulator U6 is connected with a second end of the resistor R22,
the ground terminal GND of the low dropout regulator U6, the first terminal of the capacitor C98, the second terminal of the capacitor C96, the first terminal of the resistor R22, and the second terminal of the capacitor C106 are connected to ground,
an enable end EN of the low dropout regulator U6 is connected with a second end of the resistor R23, a power output end VOUT of the low dropout regulator U6 is connected with a first end of the resistor R33, a first end of the capacitor C99, a first end of the capacitor C100 and a first end of the capacitor C101, and a power supply VCC _3.3V is output outwards; the second terminal of the capacitor C99, the second terminal of the capacitor C100 and the second terminal of the capacitor C101 are connected to the power ground,
the watchdog service end WD of the low dropout regulator U6 is connected with the second end of the resistor R70 and the first end of the resistor R72, the first end of the resistor R70 and the first end of the capacitor C102 are connected with the power ground, the second end of the resistor R72 and the second end of the capacitor C102 are connected with the control module, the watchdog enabling end nWD _ EN, the second end of the resistor R33 and the first end of the resistor R71 of the low dropout regulator U6 are connected with the control module, and the second end of the resistor R71 is connected with the power ground.
8. The automotive central control display screen system according to claim 1, wherein the lighting driver module comprises a lighting driver U7:
a power input terminal VIN of the lighting driver U7 is connected to the power supply P _ Battery, a first terminal of a capacitor C72, a first terminal of a capacitor C12, a first terminal of a capacitor C107, and a first terminal of an inductor L12, a second terminal of a capacitor C72, a second terminal of a capacitor C12, and a second terminal of a capacitor C107 are connected to the power ground, a FAULT signal output terminal FAULT of the lighting driver U7 is connected to a second terminal of a resistor R12, a first terminal of a resistor R12 is connected to the controller, a PWM dimming input terminal PWM of the lighting driver U7 is connected to a second terminal of a resistor R11, a first terminal of a resistor R11 is connected to the controller, an input terminal VDDIO/EN of the lighting driver U7 is connected to a synchronous boost input terminal SYNC of the lighting driver U7, a second terminal of a resistor R14, a first terminal of the resistor R14 is connected to the controller 6866, a switching frequency setting resistor FSET terminal of the lighting driver U1 is connected to a first terminal ISET 7, the LDO internal output of the lighting driver U7 is connected to a first terminal of a capacitor C16,
a switching value output end SW of the lighting driver U7 is connected with a second end of the inductor L12, a first end of the diode D1 and a second end of the resistor R76, a first end of the resistor R76 is connected with a second end of the capacitor C103, a first end of the capacitor C103 is connected with a power ground, a second end of the diode D1 is connected with a first end of the capacitor C108, a first end of the capacitor C73, a first end of the capacitor C74, a first end of the capacitor C14, a first end of the capacitor CFB1 and a first end of the resistor RFT1, and outputs a signal LCD _ Backlight _ OUT +; the second terminal of the capacitor C108, the second terminal of the capacitor C73, the second terminal of the capacitor C74, and the second terminal of the capacitor C14 are coupled to ground, the second terminal of the resistor RFT1 is coupled to the first terminal of the resistor RFT2,
a feedback input terminal FB of the lighting driver U7 is connected to the second terminal of the capacitor CFB1, the second terminal of the resistor RFT2, and the first terminal of the resistor RFB1, the second terminal of the resistor RFB1 is connected to a power ground, an output terminal OUT1 of the lighting driver U7 is connected to the display screen, an output terminal OUT2 of the lighting driver U7 is connected to the display screen, an output terminal OUT3 of the lighting driver U7 is connected to the display screen, an output terminal OUT4 of the lighting driver U7 is connected to the display screen, a ground terminal PGND of the lighting driver U7, a ground terminal GND of the lighting driver U7, a chip hot Pad terminal Pad of the lighting driver U7, a second terminal of the resistor RFSET1, a second terminal of the resistor RISET1, and a second terminal of the capacitor C16 is connected to the power ground.
9. The automobile central control display screen system according to claim 1, wherein the display screen comprises a touch screen connector CN1, a screen backlight connector CN5, a screen signal connector CN 4:
a ground terminal GND of the touch screen connector CN1 is connected to a power ground, a power terminal VDD of the touch screen connector CN1 is connected to a second terminal of an inductor L16, a first terminal of a resistor R39, a first terminal of a diode ESD9 and a first terminal of a capacitor C1, a first terminal of an inductor L16 is connected to a power TP _3.3V, a reset terminal XRES of the touch screen connector CN1 is connected to a second terminal of a resistor R40, a first terminal of a capacitor C4 and a first terminal of a diode ESD8, a first terminal of a resistor R40 is connected to the controller, a second terminal of a capacitor C4 is connected to the power ground, a second terminal of a diode ESD8 is connected to the power ground, and a ground terminal GND of the touch screen connector CN1 is connected to the power ground;
an illumination terminal LEDA1 of the screen backlight connector CN5 is connected to the second terminal of the inductor L27, the first terminal of the capacitor C7, an illumination terminal LEDA2 of the screen backlight connector CN5, an illumination terminal LEDA3 of the screen backlight connector CN5, an illumination terminal LEDA4 of the screen backlight connector CN5, a first terminal of the inductor L27 is connected to the illumination driver module, a second terminal of the capacitor C7 is connected to power ground, a temperature-sensitive terminal NCT1 of the screen backlight connector CN5 is connected to the second terminal of the resistor R42, the second terminal of the resistor R3, the first terminal of the capacitor C3, a first terminal of the resistor R3 is connected to VCC _3.3V, a first terminal of the resistor R3 is connected to the control module, a temperature-sensitive terminal NCT 3 of the screen backlight connector CN 3, a second terminal of the capacitor C3 is connected to power ground, a second terminal of the illumination terminal LEDA3 of the backlight connector CN 3 is connected to the inductor L, a second terminal of the capacitor C3 is connected to power ground, a second terminal of the inductor L3, a second terminal of the illumination terminal 3 is connected,
the lighting terminal LEDK3 of the screen backlight connector CN5 is connected to the second terminal of the inductor L29 and the first terminal of the capacitor C86, the first terminal of the inductor L29 is connected to the lighting driving module, the second terminal of the capacitor C86 is connected to the power ground,
the lighting terminal LEDK2 of the screen backlight connector CN5 is connected to the second terminal of the inductor L30 and the first terminal of the capacitor C87, the first terminal of the inductor L30 is connected to the lighting driving module, the second terminal of the capacitor C87 is connected to the power ground,
the lighting terminal LEDK1 of the screen backlight connector CN5 is connected to the second terminal of the inductor L31 and the first terminal of the capacitor C88, the first terminal of the inductor L31 is connected to the lighting driving module, the second terminal of the capacitor C88 is connected to the power ground,
the ground terminal PADGND of the panel backlight connector CN5 is connected to the power ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011524428.8A CN112776742A (en) | 2020-12-22 | 2020-12-22 | Automobile central control display screen system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011524428.8A CN112776742A (en) | 2020-12-22 | 2020-12-22 | Automobile central control display screen system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112776742A true CN112776742A (en) | 2021-05-11 |
Family
ID=75751650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011524428.8A Pending CN112776742A (en) | 2020-12-22 | 2020-12-22 | Automobile central control display screen system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112776742A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114040155A (en) * | 2021-10-31 | 2022-02-11 | 中汽院(重庆)汽车检测有限公司 | A test system for vehicle panoramic surround view image |
| CN114148170A (en) * | 2021-12-20 | 2022-03-08 | 重庆德科电子仪表有限公司 | Automobile L-shaped central control screen and working method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4162493A (en) * | 1976-01-13 | 1979-07-24 | Random Electronics International Pty. Limited | Graphic display systems |
| CN201683730U (en) * | 2009-08-03 | 2010-12-29 | 郑红光 | Drinking fountain with network control function |
| CN202827043U (en) * | 2012-09-17 | 2013-03-27 | 江苏省精创电气股份有限公司 | Bus air condition controller |
| CN109624712A (en) * | 2018-12-29 | 2019-04-16 | 重庆德科电子仪表有限公司 | A kind of automobile instrument system |
| CN209305513U (en) * | 2018-12-29 | 2019-08-27 | 重庆德科电子仪表有限公司 | A kind of vehicle power supply circuit |
| CN210437084U (en) * | 2019-08-28 | 2020-05-01 | 惠州联威电子科技有限公司 | Electronic rearview mirror system |
-
2020
- 2020-12-22 CN CN202011524428.8A patent/CN112776742A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4162493A (en) * | 1976-01-13 | 1979-07-24 | Random Electronics International Pty. Limited | Graphic display systems |
| CN201683730U (en) * | 2009-08-03 | 2010-12-29 | 郑红光 | Drinking fountain with network control function |
| CN202827043U (en) * | 2012-09-17 | 2013-03-27 | 江苏省精创电气股份有限公司 | Bus air condition controller |
| CN109624712A (en) * | 2018-12-29 | 2019-04-16 | 重庆德科电子仪表有限公司 | A kind of automobile instrument system |
| CN209305513U (en) * | 2018-12-29 | 2019-08-27 | 重庆德科电子仪表有限公司 | A kind of vehicle power supply circuit |
| CN210437084U (en) * | 2019-08-28 | 2020-05-01 | 惠州联威电子科技有限公司 | Electronic rearview mirror system |
Non-Patent Citations (4)
| Title |
|---|
| WWW.MONOLITHICPOWER.COM: "MPQ2171Datasheet", 《百度》 * |
| WWW.TI.COM: "TLV702-Q1 300-mA, Low-IQ, Low-Dropout Regulator", 《百度》 * |
| WWW.TI.COM: "TPS61194-Q1 Low-EMI Automotive LED Driver With Four 100-mA Channels", 《百度》 * |
| WWW.TI.COM: "TPS736xx-Q1, Cap-Free, NMOS, 400-mA Low-Dropout Regulator", 《百度》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114040155A (en) * | 2021-10-31 | 2022-02-11 | 中汽院(重庆)汽车检测有限公司 | A test system for vehicle panoramic surround view image |
| CN114148170A (en) * | 2021-12-20 | 2022-03-08 | 重庆德科电子仪表有限公司 | Automobile L-shaped central control screen and working method thereof |
| CN114148170B (en) * | 2021-12-20 | 2023-07-18 | 重庆德科电子仪表有限公司 | Automobile L-shaped central control screen and working method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112776742A (en) | Automobile central control display screen system | |
| CN104066240B (en) | A kind of intelligence wakes light fixture up | |
| CN205744551U (en) | A kind of automatic temperature-regulating fan control system | |
| US7595847B2 (en) | Audio/video playback control system of liquid crystal display television | |
| WO2005050332A3 (en) | Improved regulator system for alternator | |
| CN201622764U (en) | Multifunctional electronic perpetual calendar | |
| CN202650501U (en) | LCD advertising machine with function of human body sensing | |
| CN202424884U (en) | Low power consumption standby and awakening television circuit | |
| CN202584696U (en) | Digital photo frame display screen brightness night mode regulation and control system | |
| CN205566746U (en) | Can eliminate control circuit , control chip and LED illuminator of electric current ripple | |
| CN105892371A (en) | Power management module for cloud terminal capable of realizing intelligent control | |
| CN112928811A (en) | Photovoltaic power supply system suitable for electrochromic glass window | |
| CN203584853U (en) | Intelligent energy-conservation control device used for electric fan | |
| CN206770240U (en) | A kind of temperature control fan for sensing human body | |
| CN116132740A (en) | Energy saving method and device for video watching equipment, video watching equipment and readable storage medium | |
| CN102395016A (en) | Control circuit structure for realization of low power standby in set-top box device | |
| CN111383578A (en) | Energy-saving control system based on LED display all-in-one machine | |
| CN201363934Y (en) | Solar energy water heater multimedia control system based on wireless transmission | |
| CN203057302U (en) | Digital camera with clock function | |
| CN221200328U (en) | Intelligent control system for intelligent wearable equipment | |
| CN221327120U (en) | Intelligent recorder for motorcycle | |
| CN221926978U (en) | Video motherboard control circuit | |
| CN211089785U (en) | 4K equipment supporting 4-path 3G video synthesis one-path 12G video signal | |
| CN212332653U (en) | Rail vehicle light modulation controller | |
| CN115361611B (en) | Multifunctional earphone for smart home |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210511 |
|
| RJ01 | Rejection of invention patent application after publication |