CN113386561A

CN113386561A - Intelligent automobile instrument

Info

Publication number: CN113386561A
Application number: CN202110730061.3A
Authority: CN
Inventors: 黄泽胜; 黄胜祥
Original assignee: Chongqing Sansan Electric Appliance Co ltd
Current assignee: Chongqing Sansan Electric Appliance Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2021-09-14
Anticipated expiration: 2041-06-29
Also published as: CN113386561B

Abstract

The invention provides an intelligent automobile instrument, which comprises a fixing device for fixing the automobile instrument or/and a display panel for the automobile instrument, and further comprises a PCB fixed mounting seat which is arranged in the automobile instrument and is used for fixedly mounting a PCB, wherein the PCB is fixedly mounted on the PCB fixed mounting seat, and a control circuit is arranged on the PCB. The requirements of high anti-interference capability, high reliability, high integration, multiple functions and intellectualization of the automobile instrument are met. The mounting speed is improved, the assembly efficiency is improved, the workload of workers is reduced, the connection is stable and reliable, abnormal sounds can be reduced, and the driving comfort is improved. Reduce visual regional friction, avoid because the mar that the inside friction of screen produced, guarantee display panel shows the definition, improves display panel's service life.

Description

Intelligent automobile instrument

Technical Field

The invention relates to the technical field of automobile instruments, in particular to an intelligent automobile instrument.

Background

The automobile instrument has the main functions of providing important automobile operation parameter information for a driver, providing maintenance personnel for finding and eliminating automobile faults and being an important component of an automobile. Traditional motormeter pencil is more, and the display content is single, can't satisfy high interference killing feature of motormeter, high reliability, high integration, multi-functional and intelligent demand.

Disclosure of Invention

The invention aims to at least solve the technical problems in the prior art, and particularly innovatively provides an intelligent automobile instrument.

In order to achieve the above purpose, the present invention provides an intelligent automobile instrument, which includes a fixing device for fixing the automobile instrument or/and a display panel for the automobile instrument, and further includes a PCB board fixing mount seat for fixedly mounting a PCB board, which is arranged in the automobile instrument, wherein the PCB board is fixedly mounted on the PCB board fixing mount seat, and a control circuit is arranged on the PCB board.

In a preferred embodiment of the present invention, the control circuit includes a control module, an LED module, and a power supply module; the power supply end of the power supply module is respectively connected with the power supply end of the control module and the power supply end of the LED module to provide working power supply for the control module and the LED module; and the data end of the control module is connected with the data end of the LED module.

In a preferred embodiment of the present invention, the control module includes:

a ground terminal VSS1 of the microcontroller U5 is connected with a power ground, an internal stabilized voltage supply stabilizing capacitor terminal C of the microcontroller U5 is connected with a first terminal of a capacitor C41, a second terminal of the capacitor C41 is connected with the power ground, an analog circuit power supply terminal AVCC of the microcontroller U5 is connected with a first terminal of a capacitor C48 and a power supply MCU _5V, an A/D converter high reference voltage input terminal AVRH of the microcontroller U5 is connected with a first terminal of a capacitor C49 and a power supply MCU _5V, a second terminal of a capacitor C48, a second terminal of a capacitor C49 and a first terminal of a capacitor C51 are connected with the power ground, an A/D converter high reference voltage input terminal AVRL of the microcontroller U5 and an analog circuit ground terminal AVSS are connected with the power ground, and a power supply terminal VCC1 of the microcontroller U5 is connected with a second terminal of the capacitor C51 and the power supply MCU _ 5V; a ground terminal VSS5 of the microcontroller U5 is connected with a power ground, an SMC power supply terminal DVCC1 of the microcontroller U5 is connected with a first terminal of a capacitor C54 and a power supply MCU _5V, and an SMC ground terminal DVSS1 of the microcontroller U5 and a second terminal of a capacitor C54 are connected with the power ground;

an SMC power supply terminal DVCC2 of the microcontroller U5 is connected with a first terminal of a capacitor C55 and a power supply MCU _5V, and an SMC ground terminal DVSS2 and a second terminal of a capacitor C55 of the microcontroller U5 are connected with a power supply ground; a power supply terminal VCC3 of the microcontroller U5 is connected with a first end of the capacitor C56 and the power supply MCU _ 5V; a second terminal of the capacitor C56 is connected to power ground;

the ground terminal VSS2 of the microcontroller U5 is connected with the power ground, the on-chip debug terminal DEBUGI/F of the microcontroller U5 is connected with the first terminal of the resistor R42 and the first terminal of the resistor R43, the second terminal of the resistor R42 is connected with the first terminal of the key S11, the second terminal of the key S11 is connected with the power ground, the second terminal of the resistor R43 is connected with the power MCU _5V,

an operation mode selection end MD of the microcontroller U5 is connected with a first end of a resistor R41, a reset end RSTX of the microcontroller U5 is connected with a first end of a capacitor C46, a first end of a capacitor C47 and a first end of a resistor R40, a second end of a resistor R40 is connected with a power supply MCU _5V, and a second end of a capacitor C46, a second end of a capacitor C47 and a second end of a resistor R41 are connected with the power supply ground;

a crystal oscillator input end X0 of the microcontroller U5 is connected with a first end of a crystal oscillator Y1 and a first end of a capacitor C45, a crystal oscillator output end X1 of the microcontroller U5 is connected with a second end of a crystal oscillator Y1 and a first end of a capacitor C44, and a second end of the capacitor C44 and a second end of a capacitor C45 are connected with a power ground;

a ground terminal VSS3 of the microcontroller U5 is connected with a power ground, a power supply terminal VCC2 of the microcontroller U5 is connected with a first terminal of a capacitor C43 and a power supply MCU _5V, a second terminal of a capacitor C43 is connected with the power ground, a ground terminal VSS4 of the microcontroller U5 is connected with the power ground, a power supply terminal VCC of the microcontroller U5 is connected with a first terminal of a capacitor C42 and the power supply MCU _5V, and a second terminal of the capacitor C42 is connected with the power ground;

and/or further comprising a memory module coupled to the control module, the memory module comprising:

the chip address input terminal a0, the chip address input terminal a1, the chip address input terminal a2, and the ground terminal VSS of the memory U6 are connected to the power ground, the data terminal SDA of the memory U6 is connected to the first terminal of the resistor R38 and the first terminal of the resistor R33, the second terminal of the resistor R33 is connected to the data storage terminal P09_0/PWM1P2/AN24 of the microcontroller U5, the serial clock terminal SCL of the memory U6 is connected to the first terminal of the resistor R39 and the first terminal of the resistor R34, the second terminal of the resistor R34 is connected to the clock terminal P09_1/PWM1M2/AN25 of the microcontroller U5, the second terminal of the resistor R38, the second terminal of the resistor R39, the first terminal of the resistor R37, the first terminal of the capacitor C50, and the power supply terminal VCC of the memory U6 are connected to the collector of the transistor Q3,

a second end of the capacitor C50 is connected with a power ground, and a write protection input end WP of the memory U6 is connected with a second end of the resistor R37 and a data end P09_2/PWM2P2/AN26 of the microcontroller U5;

AN emitter of the triode Q3 is connected with a first end of a resistor R35 and a power supply +5V, a second end of the resistor R35 and a first end of the resistor R36 are respectively connected with a base electrode of the triode Q3, and a second end of the resistor R36 is connected with a storage power supply end P10_1/PWM1M4/SOT2/TOT3/AN29 of the microcontroller U5;

or/and the power supply module comprises: the power supply comprises a first power supply module, a second power supply module, a third power supply module and a fourth power supply module; the output end of the first power supply module is connected with the input end of the second power supply module; the output end of the second power supply module is connected with the input end of the third power supply module and the input end of the fourth power supply module;

the first power supply module includes: the anode of the diode D1 is connected with the battery BAT, the cathode of the diode D1 is connected with the cathode of the diode D4, the cathode of the transient diode TVS, the first end of the capacitor C3 and the first end of the inductor L1, and the anode of the diode D4 is connected with the ignition power supply IGN; the anode of the transient diode TVS is connected to the power ground, the second terminal of the capacitor C3 is connected to the power ground, the second terminal of the inductor L1 is connected to the first terminal of the capacitor C4, the anode of the electrolytic capacitor EC1, the anode of the electrolytic capacitor EC6 and the input terminal of the second power module, and the second terminal of the inductor L1 outputs the power + B;

the second end of the capacitor C4 is connected with the power ground, and the negative electrode of the electrolytic capacitor EC1 and the negative electrode of the electrolytic capacitor EC6 are connected with the power ground;

the second power supply module includes: the first end of the capacitor C18, the first end of the capacitor C19, the first end of the capacitor C20, the first end of the capacitor C21, the first end of the resistor R5, the first end of the resistor R4, the input end IN of the voltage reducer U2 and the first end of the resistor R4 are connected with the output end of the first power supply module; an enable terminal EN of the voltage reducer U2 is connected with the second terminal of the resistor R5 and the first terminal of the resistor R9, a frequency setting terminal FS of the voltage reducer U2 is connected with the first terminal of the resistor R10, a ground terminal GND of the voltage reducer U2, the second terminal of the resistor R9, the second terminal of the resistor R10, the second terminal of the capacitor C18, the second terminal of the capacitor C19, the second terminal of the capacitor C20 and the second terminal of the capacitor C21 are connected with a power ground;

a power good indication terminal PG of a voltage reducer U2 is connected to a second terminal of a resistor R4, a bootstrap terminal BS of the voltage reducer U2 is connected to a first terminal of a capacitor C10, a second terminal of a capacitor C10 is connected to a first terminal of a resistor R6, a second terminal of a resistor R6 is connected to a first terminal of an inductor L2 and an inductor terminal LX of the voltage reducer U2, a second terminal of the inductor L2 is connected to a first terminal of a capacitor C11, a first terminal of a resistor R7, a first terminal of a capacitor C12, a second terminal of a capacitor R12, a second terminal of a resistor R12, a first terminal of a resistor R12 is connected to a feedback terminal FB of the voltage reducer U12, a second terminal of the resistor R12 is connected to a second terminal of the capacitor C12, a second terminal of a capacitor C12, a capacitor C terminal of a capacitor C12, a capacitor C terminal of a capacitor C12, a capacitor C terminal of a capacitor C12, a capacitor C terminal of a capacitor C, The second end of the capacitor C17 is connected with the power ground, the second end of the magnetic bead FB4 is connected with the input end of the third power module, and the second end of the magnetic bead FB4 outputs + 5V;

the third power module includes: the first end of a resistor R18 and the emitter of a triode Q2 are connected with the output end of the second power supply module, the second end of a resistor R18 and the first end of a resistor R19 are connected with the base of a triode Q2, the second end of a resistor R19 is connected with a power supply output control end P13_2/PPG0/TIN0/FRCK1/SEG43 of the micro-control U5, the collector of the triode Q2 is connected with the first end of a capacitor C25, and the collector of the triode Q2 outputs a power supply VCC 5; a second terminal of the capacitor C25 is connected to power ground;

the fourth power supply module includes: a first end of the FB13 is connected with an output end of the second power supply module, and a second end of the magnetic bead FB13 is respectively connected with a first end of the capacitor C39 and a first end of the capacitor C40; a second end of the magnetic bead FB13 outputs a power supply MCU _5V, and a second end of the capacitor C39 and a second end of the capacitor C40 are respectively connected with a power supply ground;

or/and the power supply module further comprises an ignition power supply module, the ignition power supply module comprises: the ignition system comprises a first ignition power module, a second ignition power module and a third ignition power module; the output end of the first ignition power supply module is connected with the input end of the second ignition power supply module and the input end of the third ignition power supply module;

the first ignition power supply module includes: a first end of a capacitor C9 and an anode of a diode D6 are connected with a power supply IGN, a second end of a capacitor C9 is connected with a power supply ground, a cathode of the diode D6 is connected with a first end of a capacitor C23 and a first end of a magnetic bead FB6, a second end of a magnetic bead FB6 is connected with a first end of a capacitor C24, an input end of a second ignition power supply module and an input end of a third ignition power supply module, and a second end of the magnetic bead FB6 outputs a power supply IGN _ B; the second end of the capacitor C23 and the second end of the capacitor C24 are connected with the power ground;

the second ignition power supply module includes: a first end of the resistor R299 is connected to AN output end of the first ignition power module, a second end of the resistor R299 is connected to a first end of the resistor R268 and AN emitter of the transistor Q23, a base of the transistor Q23 is connected to a second end of the resistor R268 and a first end of the resistor R267, a second end of the resistor R267 is connected to a collector of the transistor Q24, a base of the transistor Q24 is connected to a first end of the resistor R269 and a first end of the resistor R270, a second end of the resistor R269 is connected to AN ignition power control terminal P10_2/PWM2P4/SCK2/PPG6/AN30 of the microcontroller U5, a second end of the resistor R270 and AN emitter of the transistor Q24 are connected to a power ground, a collector of the transistor Q23 is connected to a first end of the capacitor C143 and a first end of the capacitor C144, a collector of the transistor Q23 outputs a power supply ignal, a second end of the capacitor C143 and a second end of the capacitor C144 are connected to a power ground;

the third ignition power supply module includes: a first end of the resistor R298 is connected with AN output end of the first ignition power module, a second end of the resistor R298 is connected with a first end of the resistor R264 and AN emitter of the transistor Q21, a base of the transistor Q21 is connected with a second end of the resistor R264 and a first end of the resistor R263, a second end of the resistor R263 is connected with a collector of the transistor Q22, a base of the transistor Q22 is connected with a first end of the resistor R265 and a first end of the resistor R266, a second end of the resistor R265 is connected with AN ignition power control end P10_2/PWM2P4/SCK2/PPG6/AN30 of the microcontroller U5, a second end of the resistor R266 and AN emitter of the transistor Q22 are connected with a power ground, a collector of the transistor Q21 is connected with a first end of the capacitor C139 and a first end of the capacitor C140, a collector of the transistor Q21 outputs a power IGN _ C, a second end of the capacitor C139 and a second end of the capacitor C140 are connected with the power ground;

the power supply IGN _ C for controlling water temperature and the power supply IGN _ A for the fuel indicator lamp aim to control the change of display brightness through PWM, the change is consistent with the change of backlight brightness of a TFT screen, 10 brightness change levels are provided, and a user can define and adjust the overall display brightness of the combination meter according to own preference.

Or/and still include the ignition power supply detection module that links to each other with first ignition power module and fourth power module, ignition power supply detection module includes: a first end of the resistor R15 is connected with an output end of the first ignition power module, a second end of the resistor R15 is connected with a first end of the resistor R16 and a first end of the resistor R17, a second end of the resistor R16 is connected with a base electrode of the triode Q1, a collector electrode of the triode Q1 is connected with a first end of the resistor R12 and a first end of the resistor R13, and a second end of the resistor R12 is connected with an output end of the fourth power module;

a second end of the resistor R13 is connected with a first end of the resistor R14 and a first end of the capacitor C22, and a second end of the resistor R14 is connected with a firing end P00_3/SEG15/INT6_ R of the microcontroller U5;

the second end of the capacitor C22, the emitter of the transistor Q1 and the second end of the resistor R17 are connected with the power ground;

or/and still include the battery voltage collection module, the battery voltage collection module includes: the first end of a capacitor C2 and the first end of a resistor R2 are connected with a battery BAT, the second end of a capacitor C2 is connected with a power ground, the second end of a resistor R2 is connected with the first end of a resistor R1, the first end of a capacitor C1 and the first end of a resistor R3, the second end of a resistor R1 and the second end of a capacitor C1 are connected with the power ground, and the second end of a resistor R3 is connected with a battery voltage acquisition P05_7/AN15/TOT2/SGA1_ R of a microcontroller U5.

In a preferred embodiment of the present invention, the LED module includes: the dial decorative ring backlight module, the water temperature indicator lamp display module and the fuel indicator lamp display module are one or any combination of the above modules;

the dial bezel backlight module includes: the backlight module of the first dial decorative ring is connected with the backlight module of the second dial decorative ring;

the first dial bezel backlight module includes: an anode of electrolytic capacitor EC7, an anode of electrolytic capacitor EC8, a first end of capacitor C74, a first end of capacitor C75, an anode of light emitting diode LED3-B, an anode of light emitting diode LED3-G, an anode of light emitting diode LED3-R, an anode of light emitting diode LED4-B, an anode of light emitting diode LED4-G, an anode of light emitting diode LED4-R, an anode of light emitting diode LED5-B, an anode of light emitting diode LED5-G, an anode of light emitting diode LED5-R, an anode of light emitting diode LED7-B, an anode of light emitting diode LED7-G, an anode of light emitting diode LED7-R, an anode of light emitting diode LED9-B, an anode of light emitting diode LED9-G, an anode of light emitting diode LED9-R, an anode of light emitting diode LED10-B, and a cathode of light emitting diode, The anodes of the light emitting diodes LED10-G and the anodes of the light emitting diodes LED10-R are connected with a power supply IGN _ B;

the cathode of the electrolytic capacitor EC7 is connected to power ground, the cathode of the electrolytic capacitor EC8 is connected to power ground, the second end of the capacitor C74 and the second end of the capacitor C75 are connected to power ground, the cathode of the LED3-B is connected to the first end of the resistor R89, the cathode of the LED3-G is connected to the first end of the resistor R95, the cathode of the LED3-R is connected to the first end of the resistor R97, the cathode of the LED4-B is connected to the first end of the resistor R92, the cathode of the LED4-G is connected to the first end of the resistor R96, the cathode of the LED4-R is connected to the first end of the resistor R98, the cathode of the LED5-B is connected to the first end of the resistor R99, the cathode of the LED5-G is connected to the first end of the resistor R105, the cathode of the LED5-R is connected to the first end of the resistor R109, the cathode of the light emitting diode LED7-B is connected with the first end of the resistor R102, the cathode of the light emitting diode LED7-G is connected with the first end of the resistor R106, the cathode of the light emitting diode LED7-R is connected with the first end of the resistor R110, the cathode of the light emitting diode LED9-B is connected with the first end of the resistor R113, the cathode of the light emitting diode LED9-G is connected with the first end of the resistor R111, the cathode of the light emitting diode LED9-R is connected with the first end of the resistor R119, the cathode of the light emitting diode LED10-B is connected with the first end of the resistor R112, the cathode of the light emitting diode LED10-G is connected with the first end of the resistor R118, and the cathode of the light emitting diode LED10-R is connected with the first end of the resistor R122;

a second terminal of the resistor R89, a second terminal of the resistor R99, a second terminal of the resistor R113, a second terminal of the resistor R92, a second terminal of the resistor R102, a second terminal of the resistor R112, and a collector of the transistor Q8 are connected to the second dial bezel backlight module, a base of the transistor Q8 is connected to a first terminal of the resistor R128, a first terminal of the capacitor C73, a first terminal of the capacitor C72, and a first terminal of the resistor R125, an emitter of the transistor Q8, a second terminal of the resistor R128, a second terminal of the capacitor C73, and a second terminal of the capacitor C72 are connected to ground, a second terminal of the resistor R125 is connected to the data terminal P11_3/COM3/PPG2_ R of the microcontroller U5,

a second terminal of the resistor R95, a second terminal of the resistor R105, a second terminal of the resistor R111, a second terminal of the resistor R96, a second terminal of the resistor R106, a second terminal of the resistor R118, and a collector of the transistor Q7 are connected to the second dial bezel backlight module, a base of the transistor Q7 is connected to a first terminal of the resistor R127, a first terminal of the capacitor C71, a first terminal of the capacitor C70, and a first terminal of the resistor R124, an emitter of the transistor Q7, a second terminal of the resistor R127, a second terminal of the capacitor C71, and a second terminal of the capacitor C70 are connected to ground, a second terminal of the resistor R124 is connected to the data terminal P11_4/SEG0/PPG3_ R of the microcontroller U5,

a second end of the resistor R97, a second end of the resistor R98, a second end of the resistor R109, a second end of the resistor R110, a second end of the resistor R119, a second end of the resistor R122, and a collector of the transistor Q6 are connected to the second dial bezel backlight module, a base of the transistor Q6 is connected to a first end of the resistor R126, a first end of the capacitor C69, a first end of the capacitor C68, and a first end of the resistor R123, an emitter of the transistor Q6, a second end of the resistor R126, a second end of the capacitor C69, and a second end of the capacitor C68 are connected to ground, and a second end of the resistor R123 is connected to the data terminal P11_5/SEG1/PPG4_ R of the microcontroller U5;

or/and the second dial bezel backlight module comprises:

an anode of electrolytic capacitor EC10, an anode of electrolytic capacitor EC9, a first end of capacitor C141, a first end of capacitor C142, an anode of light emitting diode LED1-B, an anode of light emitting diode LED1-G, an anode of light emitting diode LED1-R, an anode of light emitting diode LED8-B, an anode of light emitting diode LED8-G, an anode of light emitting diode LED8-R, an anode of light emitting diode LED11-B, an anode of light emitting diode LED11-G, an anode of light emitting diode LED11-R, an anode of light emitting diode LED2-B, an anode of light emitting diode LED2-G, an anode of light emitting diode LED2-R, an anode of light emitting diode LED6-B, an anode of light emitting diode LED6-G, an anode of light emitting diode LED6-R, an anode of light emitting diode LED12-B, a cathode of light emitting diode LED12-B, The anodes of the light emitting diodes LED12-G and the anodes of the light emitting diodes LED12-R are connected with a power supply IGN _ B;

the negative electrode of the electrolytic capacitor EC10 and the negative electrode of the electrolytic capacitor EC9 are connected with the power ground, the second end of the capacitor C141 and the second end of the capacitor C142 are connected with the power ground,

the cathode of the LED1-B is connected to the first end of the resistor R87, the cathode of the LED1-G is connected to the first end of the resistor R90, the cathode of the LED1-R is connected to the first end of the resistor R93, the cathode of the LED8-B is connected to the first end of the resistor R100, the cathode of the LED8-G is connected to the first end of the resistor R103, the cathode of the LED8-R is connected to the first end of the resistor R107, the cathode of the LED11-B is connected to the first end of the resistor R114, the cathode of the LED11-G is connected to the first end of the resistor R116, the cathode of the LED11-R is connected to the first end of the resistor R1120, the cathode of the LED2-B is connected to the first end of the resistor R88, the cathode of the LED2-G is connected to the first end of the resistor R91, the cathode of the light emitting diode LED2-R is connected with the first end of the resistor R94, the cathode of the light emitting diode LED6-B is connected with the first end of the resistor R101, the cathode of the light emitting diode LED6-G is connected with the first end of the resistor R104, the cathode of the light emitting diode LED6-R is connected with the first end of the resistor R108, the cathode of the light emitting diode LED12-B is connected with the first end of the resistor R115, the cathode of the light emitting diode LED12-G is connected with the first end of the resistor R117, and the cathode of the light emitting diode LED12-R is connected with the first end of the resistor R121;

the second end of the resistor R87, the second end of the resistor R100, the second end of the resistor R114, the second end of the resistor R88, the second end of the resistor R101 and the second end of the resistor R115 are connected with the first dial bezel backlight module,

the second end of the resistor R90, the second end of the resistor R103, the second end of the resistor R116, the second end of the resistor R91, the second end of the resistor R104 and the second end of the resistor R117 are connected with the first dial bezel backlight module,

the second end of the resistor R93, the second end of the resistor R107, the second end of the resistor R120, the second end of the resistor R94, the second end of the resistor R108 and the second end of the resistor R121 are connected with the first dial bezel backlight module;

the microcontroller U5 controls the three-color LEDs, i.e., the LEDs of 3 colors, red, green, and blue, through the PWM signal, to realize the display of the dial bezel backlight module.

Or/and the water temperature indicator lamp display module comprises: the output end of the first water temperature display module is connected with the input end of the second water temperature display module;

the first water temperature display module includes: a power supply terminal VCC of the LED driver U7, a first terminal of a capacitor C79 is connected to +5V, a second terminal of a capacitor C79 and a ground terminal GND of the LED driver U7 are connected to ground, a serial data input terminal SERIN of the LED driver U7 is connected to a first terminal of a resistor R129 and a first terminal of a capacitor C76, a second terminal of the resistor R129 is connected to the fuel indicator display module, a second terminal of the capacitor C76 is connected to ground, a drain output terminal D0 of the LED driver U7 is connected to a first terminal of a resistor R183, a drain output terminal D1 of the LED driver U7 is connected to a first terminal of a resistor R179, a drain output terminal D2 of the LED driver U7 is connected to a first terminal of a resistor R177, a second terminal of the resistor R183 is connected to a cathode of an LED13-B, a second terminal of the resistor R179 is connected to a cathode of an LED13-G, a second terminal of the resistor R177 is connected to a cathode of an LED 13-R59r,

the anode of the LED13-B, the anode of the LED13-G, the anode of the LED13-R, the first terminal of the resistor R178, the first terminal of the resistor R143, and the first terminal of the resistor R151 are connected to IGN _ C,

the drain output terminal D3 of the LED driver U7 is connected to the cathode of the LED D11, the anode of the LED D11 is connected to the second terminal of the resistor R178,

the drain output terminal D4 of the LED driver U7 is connected to the cathode of the LED D12, the anode of the LED D12 is connected to the second terminal of the resistor R143,

a drain output end D5 of the LED driver U7 is connected with the cathode of the light-emitting diode D13, and the anode of the light-emitting diode D13 is connected with the second end of the resistor R151;

the reset inverting input terminal RST _ B of the LED driver U7 is connected with the data terminal P12_7/SEG11/INT1_ R of the microcontroller U5, the output enable terminal OEN _ B of the LED driver U7 is connected with the data terminal P12_3/SEG7/OUT2_ R of the microcontroller U5, the clock terminal CLK of the LED driver U7 is connected with the first terminal of the resistor R131 and the first terminal of the capacitor C78, the second terminal of the resistor R131 is connected with the data terminal P11_7/SEG3/IN0_ R of the microcontroller U5, and the second terminal of the capacitor C78 is connected with the power ground,

a drain output end D11 of the LED driver U7 is connected with the cathode of the light-emitting diode D14, and the anode of the light-emitting diode D14 is connected with the first end of the resistor R147;

a drain output end D10 of the LED driver U7 is connected with the cathode of the light-emitting diode D15, and the anode of the light-emitting diode D15 is connected with the first end of the resistor R176;

a drain output end D9 of the LED driver U7 is connected with the cathode of the light-emitting diode D16, and the anode of the light-emitting diode D16 is connected with the first end of the resistor R153;

a drain output end D8 of the LED driver U7 is connected with a cathode of the light emitting diode D17, and an anode of the light emitting diode D17 is connected with a first end of the resistor R174;

the drain output end D7 of the LED driver U7 is connected with the cathode of the light-emitting diode D18, and the anode of the light-emitting diode D18 is connected with the first end of the resistor R159;

a drain output end D6 of the LED driver U7 is connected with a cathode of the light emitting diode D19, and an anode of the light emitting diode D19 is connected with a first end of the resistor R171;

the second end of the resistor R147, the second end of the resistor R176, the second end of the resistor R153, the second end of the resistor R174, the second end of the resistor R159 and the second end of the resistor R171 are connected to IGN _ C,

a LATCH signal input end LATCH of the LED driver U7 is connected with a first end of a capacitor C82 and a first end of a resistor R163, a second end of a capacitor C82 is connected with a power ground, and a second end of the resistor R163 is connected with a data end P12_0/SEG4/IN1_ R of the microcontroller U5; a serial data output end SEROUT of the LED driver U7 is connected with a second water temperature display module;

the second water temperature display module includes: a power supply end VCC of the LED driver U9 and a first end of a capacitor C85 are connected with +5V of a power supply, a second end of a capacitor C85 and a grounding end GND of the LED driver U9 are connected with a power ground, a serial data input end SERIN of the LED driver U9 is connected with a first end of a resistor R166 and a first end of a capacitor C84, a second end of the resistor R166 is connected with a first water temperature display module, a second end of a capacitor C84 is connected with the power ground,

the drain output terminal D0 of the LED driver U9 is connected to the cathode of the LED D20, the anode of the LED D20 is connected to the first terminal of the resistor R144,

the drain output terminal D1 of the LED driver U9 is connected to the cathode of the LED D20, the anode of the LED D20 is connected to the first terminal of the resistor R139,

the drain output terminal D2 of the LED driver U9 is connected to the cathode of the LED D21, the anode of the LED D21 is connected to the first terminal of the resistor R135,

the drain output terminal D3 of the LED driver U9 is connected to the cathode of the LED D22, the anode of the LED D22 is connected to the first terminal of the resistor R154,

the drain output terminal D4 of the LED driver U9 is connected to the cathode of the LED D23, the anode of the LED D23 is connected to the first terminal of the resistor R170,

the drain output terminal D5 of the LED driver U9 is connected to the cathode of the LED D24, the anode of the LED D24 is connected to the first terminal of the resistor R161,

the second terminal of the resistor R144, the second terminal of the resistor R139, the second terminal of the resistor R135, the second terminal of the resistor R154, the second terminal of the resistor R170, and the second terminal of the resistor R161 are connected to IGN _ C,

the reset inverting input terminal RST _ B of the LED driver U9 is connected with the data terminal P12_7/SEG11/INT1_ R of the microcontroller U5, the output enable terminal OEN _ B of the LED driver U9 is connected with the data terminal P12_3/SEG7/OUT2_ R of the microcontroller U5, the clock terminal CLK of the LED driver U9 is connected with the first terminal of the resistor R169 and the first terminal of the capacitor C86, the second terminal of the resistor R169 is connected with the data terminal P11_7/SEG3/IN0_ R of the microcontroller U5, and the second terminal of the capacitor C86 is connected with the power ground,

a drain output end D11 of the LED driver U9 is connected with a cathode of the light emitting diode D26, and an anode of the light emitting diode D26 is connected with a first end of the resistor R258;

a drain output end D10 of the LED driver U9 is connected with a cathode of the light emitting diode D27, and an anode of the light emitting diode D27 is connected with a first end of the resistor R186;

a drain output end D9 of the LED driver U9 is connected with a cathode of the light emitting diode D28, and an anode of the light emitting diode D28 is connected with a first end of the resistor R134;

a drain output end D8 of the LED driver U9 is connected with a cathode of the light emitting diode D29, and an anode of the light emitting diode D29 is connected with a first end of the resistor R138;

a drain output end D7 of the LED driver U9 is connected with the cathode of the light-emitting diode D30, and the anode of the light-emitting diode D30 is connected with the first end of the resistor R180;

a drain output end D6 of the LED driver U9 is connected with a cathode of the light emitting diode D31, and an anode of the light emitting diode D31 is connected with a first end of the resistor R136;

the second terminal of the resistor R258, the second terminal of the resistor R186, the second terminal of the resistor R134, the second terminal of the resistor R138 and the second terminal of the resistor R180 are connected to IGN _ C,

a second terminal of resistor R136 is connected to IGN _ a,

a LATCH signal input end LATCH of the LED driver U7 is connected with a first end of a capacitor C87 and a first end of a resistor R187, a second end of a capacitor C87 is connected with a power ground, and a second end of the resistor R187 is connected with a data end P12_0/SEG4/IN1_ R of the microcontroller U5;

the LED driver U7 and the LED driver U9 drive the LED lamps to be turned on and off to control the lattice number of the water temperature display and alarm; 8 red LEDs and 8 white LEDs corresponding to the position of 8 sections of water temperature, and the other 5 white LEDs are used for water temperature symbol identifiers,

when the water temperature is normal, displaying the corresponding grid number on the automobile instrument through the display number of the white light-emitting diodes to represent the current water temperature;

when the water temperature is more than or equal to 118 ℃, the water temperature is in a high water temperature state, the light emitting diode LED13-R and 8 red light emitting diodes are conducted and flicker; when the water temperature is less than or equal to 112 ℃, the LED13-R is conducted;

the light emitting diodes LED13-G are green light emitting diodes, and the light emitting diodes LED13-R are red light emitting diodes.

When the temperature is normal, the light emitting diode D12, the light emitting diode D13, the light emitting diode D14, the light emitting diode D16, the light emitting diode D18, the light emitting diode D20, the light emitting diode D21, the light emitting diode D23, the light emitting diode D25, the light emitting diode D26, the light emitting diode D28, the light emitting diode D29 and the light emitting diode D31 are turned on, and when the temperature is abnormal, the light emitting diode D11, the light emitting diode D15, the light emitting diode D17, the light emitting diode D19, the light emitting diode D22, the light emitting diode D24, the light emitting diode D27 and the light emitting diode D30 are turned on.

The light-emitting diodes D12, D13, D14, D16, D18, D20, D21, D23, D25, D26, D28, D29 and D31 are white light-emitting diodes; the light emitting diodes D11, D15, D17, D19, D22, D24, D27 and D30 are red light emitting diodes.

Or/and the fuel indicator lamp display module comprises:

a power supply terminal VCC of the LED driver U8, a first terminal of a capacitor C81 are connected with a power supply +5V, a second terminal of a capacitor C81 and a ground terminal GND of the LED driver U8 are connected with a power supply ground, a serial data input terminal SERIN of the LED driver U8 is connected with a first terminal of a resistor R167, a first terminal of a capacitor C77 and a first terminal of a resistor R130, a second terminal of the resistor R167 is connected with the power supply +5V, a second terminal of a capacitor C77 is connected with the power supply ground, a second terminal of the resistor R130 and a first terminal of a resistor R165 are connected with a data terminal P00_0/SEG12/INT3_ R of the microcontroller U5, a second terminal of the resistor R165 is connected with the power supply ground,

the drain output terminal D0 of the LED driver U8 is connected to the cathode of the LED D32, the anode of the LED D32 is connected to the first terminal of the resistor R142,

the drain output terminal D1 of the LED driver U8 is connected to the cathode of the LED D33, the anode of the LED D33 is connected to the first terminal of the resistor R152,

the drain output terminal D2 of the LED driver U8 is connected to the cathode of the LED D34, the anode of the LED D34 is connected to the first terminal of the resistor R157,

the drain output terminal D3 of the LED driver U8 is connected to the cathode of the LED D35, the anode of the LED D35 is connected to the first terminal of the resistor R162,

the drain output terminal D4 of the LED driver U8 is connected to the cathode of the LED D36, the anode of the LED D36 is connected to the first terminal of the resistor R160,

the drain output terminal D5 of the LED driver U8 is connected to the cathode of the LED D37, the anode of the LED D37 is connected to the first terminal of the resistor R155,

the second terminal of the resistor R142, the second terminal of the resistor R152, the second terminal of the resistor R157, the second terminal of the resistor R162, the second terminal of the resistor R160, and the second terminal of the resistor R155 are connected to IGN _ a,

the reset inverting input end RST _ B of the LED driver U8 and a first end of a resistor R181 are connected with a data end P12_7/SEG11/INT1_ R of the microcontroller U5, and a second end of the resistor R181 is connected with the power ground; an output enable terminal OEN _ B of the LED driver U8 and a first terminal of a resistor R182 are connected with a data terminal P12_3/SEG7/OUT2_ R of the microcontroller U5, and a second terminal of the resistor R182 is connected with a power supply + 5V; the clock terminal CLK of the LED driver U8 is connected with a first terminal of a resistor R133 and a first terminal of a capacitor C80, a second terminal of the resistor R133 and a first terminal of a resistor R168 are connected with a data terminal P11_7/SEG3/IN0_ R of the microcontroller U5, a second terminal of the capacitor C80 is connected with a power ground, and a second terminal of the resistor R168 is connected with the power ground;

a drain output end D11 of the LED driver U9 is connected with a cathode of the light emitting diode D38, and an anode of the light emitting diode D38 is connected with a first end of the resistor R257;

a drain output end D10 of the LED driver U9 is connected with a cathode of the light emitting diode D39, and an anode of the light emitting diode D39 is connected with a first end of the resistor R132;

a drain output end D9 of the LED driver U9 is connected with a cathode of the light emitting diode D40, and an anode of the light emitting diode D40 is connected with a first end of the resistor R140;

a drain output end D8 of the LED driver U9 is connected with a cathode of the light emitting diode D41, and an anode of the light emitting diode D41 is connected with a first end of the resistor R146;

the drain output end D7 of the LED driver U9 is connected with the cathode of the light-emitting diode D42, and the anode of the light-emitting diode D42 is connected with the first end of the resistor R149;

a drain output end D6 of the LED driver U9 is connected with a cathode of the light emitting diode D43, and an anode of the light emitting diode D43 is connected with a first end of the resistor R145;

the second terminal of the resistor R257, the second terminal of the resistor R132, the second terminal of the resistor R140, the second terminal of the resistor R146, the second terminal of the resistor R149, and the second terminal of the resistor R145 are connected to IGN _ a,

a LATCH signal input end LATCH of the LED driver U8 is connected with a first end of a capacitor C83 and a first end of a resistor R164, a second end of a capacitor C83 is connected with a power ground, a second end of the resistor R164 and a first end of a resistor R188 are connected with a data end P12_0/SEG4/IN1_ R of the microcontroller U5, and a second end of the resistor R188 is connected with the power ground;

the LED driver U8 is used for driving the LED lamps to be turned on and off to control the grid number of the fuel display and the alarm.

8 red LEDs and 8 white LEDs are corresponding to the position of 8 sections of fuel, and the other 4 white LEDs are used for fuel symbol identifiers,

when fuel is sufficient, the light-emitting diode D32, the light-emitting diode D34, the light-emitting diode D35, the light-emitting diode D36, the light-emitting diode D37, the light-emitting diode D38, the light-emitting diode D39, the light-emitting diode D40, the light-emitting diode D41, the light-emitting diode D42 and the light-emitting diode D43 are conducted, and when fuel is insufficient, the light-emitting diode D33 is conducted and flickers;

the light emitting diode D32, the light emitting diode D34, the light emitting diode D35, the light emitting diode D36, the light emitting diode D37, the light emitting diode D38, the light emitting diode D39, the light emitting diode D40, the light emitting diode D41, the light emitting diode D42 and the light emitting diode D43 are white light emitting diodes, and the light emitting diode D33 is a red light emitting diode.

And/or further comprising:

fuel alarm lamp module: a first end of the resistor R175 is connected with IGN _ A, a second end of the resistor R175 is connected with an anode of the light emitting diode D45, a cathode of the light emitting diode D45 is connected with a collector of the triode Q19, a base of the triode Q19 is connected with a first end of the resistor R261, a second end of the resistor R261 is connected with a data end P11_1/COM1/PPG0_ R of the microcontroller U5, and an emitter of the triode Q19 is connected with the power ground;

and/or further comprising:

a normal display module:

the normal display module includes: a fuel oil normal display module and/or a water temperature normal display module,

the fuel normal display module comprises: a first end of the resistor R172 is connected with IGN _ A, a second end of the resistor R172 is connected with an anode of the light emitting diode D44, a cathode of the light emitting diode D44 is connected with a collector of the triode Q18, a base of the triode Q18 is connected with a first end of the resistor R260, a second end of the resistor R260 is connected with a data end P11_0/COM0 of the microcontroller U5, and an emitter of the triode Q18 is connected with the power ground;

the display module comprises the following components when the water temperature is normal: a first end of the resistor R259 is connected with IGN _ C, a second end of the resistor R259 is connected with an anode of the light emitting diode D46, a cathode of the light emitting diode D46 is connected with a collector of the transistor Q20, a base of the transistor Q20 is connected with a first end of the resistor R262, a second end of the resistor R262 is connected with a data end P02_2/SEG30/IN7_ R/CKOT0_ R/INT12 of the microcontroller U5, and an emitter of the transistor Q20 is connected with a power ground;

the LED module also comprises a backlight driving module of the TFT screen:

a first end of the magnetic bead FB28 is connected to the power supply + B, a second end of the magnetic bead FB28 is connected to a positive electrode of the electrolytic capacitor EC5, a first end of the capacitor C33, a first end of the capacitor C136, and a first end of the inductor L3, a second end of the inductor L3 is connected to the boost converter power switch output LX1 of the LED lighting driver U4, the boost converter power switch output LX2 of the LED lighting driver U4, and a positive electrode of the diode D8, a negative electrode of the diode D8 is connected to the first end of the capacitor C36, the first end of the capacitor C37, the first end of the resistor R25, the first end of the capacitor C38, and the first end of the magnetic bead FB10, the second end of the capacitor C36 and the second end of the capacitor C37 are connected to the power ground, a second end of the resistor R25 is connected to the first end of the resistor R26, the protection input terminal p of the LED lighting driver U4, a second end of the overvoltage resistor R26, the second end of the capacitor ovc 38, the second end of the boost converter ovnd 4, and the power supply ground 1 of the LED lighting driver U1, The power supply ground terminal PGND2 of the boost converter is connected with the power supply ground, the second terminal of the magnetic bead FB10 is connected with the first terminal of the capacitor C151 and the first terminal of the TFT screen, and the second terminal of the capacitor C151 is connected with the power supply ground;

a compensation terminal COMP of a boost converter of the LED illumination driver U4 is connected with a first terminal of a resistor R24, a second terminal of a resistor R24 is connected with a first terminal of a capacitor C32, a second terminal of the capacitor C32 is connected with a power ground, a power input terminal VIN of the LED illumination driver U4 and a first terminal of the capacitor C137 are connected with a +5V power supply, a second terminal of the capacitor C137, a first terminal of a capacitor C34, a first terminal of a capacitor C35, a negative electrode of an electrolytic capacitor EC5, a second terminal of a capacitor C33 and a second terminal of a capacitor C136 are connected with the power ground, a second terminal of the capacitor C34 and a second terminal of a capacitor C35 are connected with an output terminal VCC of an internal linear voltage regulator of the LED illumination driver U4,

AN enabling terminal EN of the LED illumination driver U4 is connected with a first terminal of a resistor R27 and a first terminal of a resistor R29, a second terminal of the resistor R27 is connected with a data terminal P08_2/PWM2P0/AN18 of the microcontroller U5,

the switching frequency setting end FREQ of the LED lighting driver U4 is connected to the first end of the resistor R30, the analog ground end AGND of the LED lighting driver U4, the second end of the resistor R29, the second end of the resistor R30, the first end of the resistor R31, and the first end of the resistor R32 are connected to the power ground, the PWM signal input end PWMI of the LED lighting driver U4 is connected to the second end of the resistor R31 and the first end of the resistor R28, the second end of the resistor R28 is connected to the PWM signal output end P11_2/COM2/PPG1_ R of the microcontroller U5,

an LED current input end LED6, an LED current input end LED5, an LED current input end LED4, an LED current input end LED3, an LED current input end LED2 and an LED current input end LED1 of the LED illumination driver U4 are connected with a first end of a magnetic bead FB12, a second end of the magnetic bead FB12 is connected with a first end of a capacitor C152 and a second end of a TFT screen, a second end of the capacitor C152 is connected with a power ground,

the LED current setting terminal ISET of the LED lighting driver U4 is connected to the second terminal of the resistor R32.

In a preferred embodiment of the invention, the display panel comprises a display screen (103), a glass panel (104), a screen cover ring (101) and a rear housing (102) for accommodating the display screen (103) and the glass panel (104), characterized in that: the back of glass panel (104) leans on the outer lane to be equipped with round isolation step (104a), just it is located the visual zone of display screen (103) to keep apart step (104a) for glass panel (104) and the visual zone of display screen (103) leave clearance (B) in, with this wearing and tearing that reduce the visual zone of display screen (103), the front of glass panel (104) leans on outer edge protruding to be equipped with location structure (104B), supplies screen lid circle (101) to cover the inner circle edge location on glass panel (104).

In a preferred embodiment of the invention, one side of the inner ring of the isolation step (104a) extends towards the edge of the visual area of the display screen (103), and the outer ring of the isolation step (104a) extends towards the edge of the glass panel (104);

or/and the positioning structure (104b) is two rows of salient points which are arranged by the upper edge and the lower edge of the front surface of the glass panel (104);

or/and the salient points are semi-spherical;

or/and the edge of the isolation step (104a) is in a smooth arc shape;

or/and the isolation step (104a) is provided with a yielding part (104c) for yielding the mounting clamping columns for the rear shell (102) and the screen cover ring (101), so that the isolation step (104a) forms an open ring. The isolation step that sets up can let glass panels and display screen leave gappedly in the visual region, reduces visual regional friction, avoids because the mar that the inside friction of screen produced, and guarantee display panel shows the definition, improves display panel's service life. The positioning structure who sets up can avoid the screen lid circle to cover the inner circle edge location on glass panels, avoids the screen lid circle to move on glass panels and causes glass panels to produce the mar, further ensures display panel display definition.

In a preferred embodiment of the invention, the fixing device comprises a plurality of large elastic chucks (1a) and small elastic chucks (1b) which are arranged on a screen fixing ring (1) of the automobile instrument around a display screen, the large elastic chucks (1a) are all arranged on the upper side of the display screen, the rest positions are all small elastic chucks (1b), large elastic clamping grooves (2a) are arranged on the outer side wall of a shading cylinder (2) of the automobile instrument corresponding to the large elastic chucks (1a), large elastic buckles are formed by combining the large elastic chucks (1a) and the large elastic clamping grooves (2a), small elastic clamping grooves (2b) are arranged on the outer side wall of the shading cylinder (2) of the automobile instrument corresponding to the small elastic chucks (1b), small elastic buckles are formed by combining the small elastic chucks (1b) and the small elastic clamping grooves (2b), and eliminating covers are fixed on the ends of the large elastic chucks (1a) and the small elastic chucks (1b) The clearance eliminating pad (1c) except the clearance, the big elastic chuck (1a) and the small elastic chuck (1b) are both in a sharp head shape.

In a preferred embodiment of the invention, the anti-backlash pad (1c) is made of felt material; the anti-backlash pad (1c) is adhered to the large elastic chuck (1a) or the small elastic chuck (1b) through back adhesive;

or/and the height and the clamping width of the large elastic clamping head (1a) are larger than those of the small elastic clamping head (1 b);

or/and the small elastic clamping head (1b) is in a sharp head shape with four sides obliquely arranged;

or/and the large elastic clamping head (1a) is in a pointed shape formed by obliquely arranging other side surfaces except the upper side surface, and the upper side surface of the large elastic clamping head (1a) is flush with the upper side of the screen fixing ring (1);

or/and the number of the small elastic chucks (1b) positioned at the lower side of the screen is less than that of the large elastic chucks (1a), and the small elastic chucks (1b) and the large elastic chucks (1a) are arranged in a left-right staggered mode. The mounting speed is improved, the assembly efficiency is improved, the workload of workers is reduced, the connection is stable and reliable, abnormal sounds can be reduced, and the driving comfort is improved. The big and small elastic clamping heads are combined with the big and small elastic clamping grooves to form clamping connection, so that the mounting efficiency is improved, and the connection stability is guaranteed. The gap eliminating pad arranged can reduce gaps between the large elastic clamping head and the small elastic clamping head and between the large elastic clamping groove and the small elastic clamping groove, can improve connection stability when abnormal sound is avoided, and prevents looseness generated between the large elastic clamping head and the small elastic clamping head and between the large elastic clamping groove and the small elastic clamping groove.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: the requirements of high anti-interference capability, high reliability, high integration, multiple functions and intellectualization of the automobile instrument are met. The mounting speed is improved, the assembly efficiency is improved, the workload of workers is reduced, the connection is stable and reliable, abnormal sounds can be reduced, and the driving comfort is improved. Reduce visual regional friction, avoid because the mar that the inside friction of screen produced, guarantee display panel shows the definition, improves display panel's service life.

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 system block diagram of the present invention;

FIG. 2 is a circuit schematic of the control module of the present invention;

FIG. 3 is a circuit schematic of the memory U6 of the present invention;

FIG. 4 is a circuit schematic of the power module of the present invention;

FIG. 5 is a circuit schematic of a third power module of the present invention;

FIG. 6 is a circuit schematic of a fourth power module of the present invention;

FIG. 7 is a schematic circuit diagram of a second ignition module of the present invention;

FIG. 8 is a schematic electrical circuit diagram of a third ignition module of the present invention;

FIG. 9 is a schematic circuit diagram of a first dial bezel backlight module according to the present invention;

FIG. 10 is a schematic circuit diagram of a second dial bezel backlight module according to the present invention;

FIG. 11 is a schematic circuit diagram of a first water temperature display module according to the present invention;

FIG. 12 is a schematic circuit diagram of a second water temperature display module according to the present invention;

FIG. 13 is a schematic circuit diagram of the fuel indicator display module of the present invention:

FIG. 14 is a schematic circuit diagram of a fuel oil normal display module and a fuel oil alarm lamp module of the invention:

FIG. 15 is a schematic circuit diagram of a normal water temperature display module according to the present invention;

FIG. 16 is a schematic circuit diagram of a backlight driving module of a TFT panel according to the present invention;

FIG. 17 is a cross-sectional view of the present invention;

FIG. 18 is an enlarged schematic view at A of FIG. 17 of the present invention;

FIG. 19 is a schematic view of the back of a glass panel of the present invention;

FIG. 20 is a schematic view of the front of the glass panel of the present invention;

FIG. 21 is a perspective view of the present invention;

FIG. 22 is a perspective view of the present invention;

FIG. 23 is a front view of the screen retainer ring of the present invention;

FIG. 24 is a left side view of FIG. 23 in accordance with the present invention;

fig. 25 is a bottom schematic view of a shade cartridge 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 intelligent automobile instrument, which comprises a fixing device for fixing the automobile instrument or/and a display panel for the automobile instrument, and further comprises a PCB fixed mounting seat which is arranged in the automobile instrument and is used for fixedly mounting a PCB, wherein the PCB is fixedly mounted on the PCB fixed mounting seat, and a control circuit is arranged on the PCB.

As shown in fig. 1 to 16, in a preferred embodiment of the present invention, the control circuit includes a control module, an LED module, and a power supply module; the power supply end of the power supply module is respectively connected with the power supply end of the control module and the power supply end of the LED module to provide working power supply for the control module and the LED module; and the data end of the control module is connected with the data end of the LED module.

or/and the second dial bezel backlight module comprises:

a second terminal of resistor R136 is connected to IGN _ a,

Or/and the fuel indicator lamp display module comprises:

And/or further comprising:

and/or further comprising:

a normal display module:

the LED module also comprises a backlight driving module of the TFT screen:

The model of the microcontroller U5 is MB96F696RB, the model of the memory U6 is 24LC64T-ESN16KVAOV, the model of the LED driver U7 is BD8389FV-M, and the model of the LED driver U8 is BD8389 FV-M.

As shown in fig. 17 to 20, the display panel includes a display screen 103, a glass panel 104, a screen cover 101, and a rear case 102 for accommodating the display screen 103 and the glass panel 104. A circle of isolation steps 104a are arranged on the back surface of the glass panel 104 close to the outer circle, and the isolation steps 104a are positioned outside the visible area of the display screen 103, so that a gap B is reserved between the glass panel 104 and the visible area of the display screen 103, and the abrasion of the visible area of the display screen 103 is reduced. Preferably, one side of the inner ring of the isolation step 104a extends to the edge of the visible region of the display screen 103, and the outer ring of the isolation step 104a extends to the edge of the glass panel 104, so as to increase the contact area between the isolation step 104a and the non-visible region of the display screen 103 and improve the support stability. The front surface of the glass panel 104 is provided with a positioning structure 104b protruding from the outer edge for positioning the inner edge of the screen cover ring 101 covering the glass panel 104. The positioning structure 104b is two rows of bumps disposed on the upper and lower edges of the front surface of the glass panel 104. Preferably, the salient points are semi-spherical, so that friction and abnormal friction sound are reduced.

Preferably, the edge of the isolation step 104a is rounded. The fillet is handled, avoids the edge to produce the mar, improves display panel service life.

Specifically, the isolation step 104a is provided with a yielding part 104c for yielding the mounting clamping columns for the rear shell 102 and the screen cover ring 101, so that the isolation step 104a forms an open ring, and the design is reasonable.

As shown in fig. 21 to 25, the fixing device includes a plurality of large elastic clamps 1a and small elastic clamps 1b arranged around the display screen on the screen fixing ring 1 of the automobile instrument. Big elasticity dop 1a all sets up the upside at the display screen, and other positions are little elasticity dop 1 b. A large elastic clamping groove 2a is formed in the outer side barrel wall of the shading barrel 2 of the automobile instrument corresponding to the large elastic clamping head 1a, and a large elastic clamping buckle is formed by combining the large elastic clamping head 1a and the large elastic clamping groove 2 a. The small elastic clamping groove 2b is formed in the wall of the outer side of the shading cylinder 2 of the automobile instrument corresponding to the small elastic clamping head 1b, and the small elastic clamping head 1b and the small elastic clamping groove 1b are combined to form a small elastic buckle. And the end heads of the large elastic clamping head 1a and the small elastic clamping head 1b are respectively fixedly wrapped with gap eliminating pads 1c for eliminating the gaps of the elastic buckles. The anti-backlash pad 1c is adhered to the large elastic chuck 1a or the small elastic chuck 1b by back adhesive. Preferably, the anti-backlash pad 1c is made of felt materials, and the anti-backlash pad 1c made of the felt materials is soft and can be well clamped between the large elastic clamping groove and the small elastic clamping groove and between the large elastic clamping head and the small elastic clamping head, so that abnormal sound is further reduced, the clamping force is improved, and the installation stability is guaranteed. Meanwhile, the felt is rough in surface, friction force can be increased, and the situation that the elastic clamping groove is deformed or loosened to slide out due to long-time use is avoided. The large elastic chuck 1a and the small elastic chuck 1b are both in a pointed shape. Specifically, the small elastic chuck 1b is in a pointed shape with four sides inclined. The large elastic clamping head 1a is in a pointed head shape formed by obliquely arranging other side surfaces except the upper side surface, can provide vertical upward supporting force for the transverse shading cylinder, and meets the installation requirement. The upper side of the large elastic chuck 1a is flush with the upper side of the screen fixing ring 1.

Wherein, the height and the clamping width of the large elastic clamping head 1a are both larger than those of the small elastic clamping head 1 b.

The number of the small elastic chucks 1b positioned on the lower side of the screen is two, the number of the large elastic chucks 1a is three, and the small elastic chucks 1b and the large elastic chucks 1a are arranged in a left-right staggered mode. Specifically, the small elastic chuck 1b is disposed corresponding to a midpoint between two adjacent large elastic chucks 1 a. The clamping points of the large elastic clamping head 1a and the small elastic clamping head 1b are staggered to form a W shape, the design is reasonable, and the clamping is stable.

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

1. The utility model provides an intelligent automobile instrument, its characterized in that, including the display panel who is used for fixed automobile instrument's fixing device or/and is used for automobile instrument, still include the PCB board fixed mounting seat that is used for the fixed mounting PCB board that sets up in automobile instrument, PCB board fixed mounting is provided with control circuit on PCB board fixed mounting seat.

2. The intelligent automobile instrument of claim 1, wherein the control circuit comprises a control module, an LED module and a power supply module; the power supply end of the power supply module is respectively connected with the power supply end of the control module and the power supply end of the LED module to provide working power supply for the control module and the LED module; and the data end of the control module is connected with the data end of the LED module.

3. The intelligent vehicle meter of claim 2, wherein the control module comprises:

a power good indication terminal PG of a voltage reducer U2 is connected to a second terminal of the resistor R4, a bootstrap terminal BS of the voltage reducer U2 is connected to a first terminal of the capacitor C10, a second terminal of the capacitor C10 is connected to a first terminal of the resistor R6, a second terminal of the resistor R6 is connected to a first terminal of the inductor L2 and an inductor terminal LX of the voltage reducer U2, a second terminal of the inductor L2 is connected to a first terminal of the capacitor C2, a first terminal of the resistor R2, a first terminal of the capacitor C2, a second terminal of the capacitor R2, a second terminal of the resistor R2, a first terminal of the resistor R2 is connected to a feedback terminal FB of the voltage reducer U2, a second terminal of the resistor R2 is connected to a second terminal of the capacitor C2, a ground, a second terminal of the capacitor C2, a power supply terminal of the capacitor C2, a second terminal of the capacitor C2, a second terminal of the capacitor C2, a power supply terminal of the capacitor C2, a ground terminal of the capacitor C2, the second end of the magnetic bead FB4 is connected with the input end of the third power supply module, and the second end of the magnetic bead FB4 outputs +5V of power supply;

4. The intelligent vehicle meter of claim 2, wherein the LED module comprises: the dial decorative ring backlight module, the water temperature indicator lamp display module and the fuel indicator lamp display module are one or any combination of the above modules;

or/and the second dial bezel backlight module comprises:

a second terminal of resistor R136 is connected to IGN _ a,

or/and the fuel indicator lamp display module comprises:

and/or further comprising:

a normal display module:

the LED module also comprises a backlight driving module of the TFT screen:

5. An intelligent vehicle instrument according to claim 1, wherein the display panel comprises a display screen (103), a glass panel (104), a screen cover ring (101) and a back case (102) for accommodating the display screen (103) and the glass panel (104), characterized in that: the back of glass panel (104) leans on the outer lane to be equipped with round isolation step (104a), just it is located the visual zone of display screen (103) to keep apart step (104a) for glass panel (104) and the visual zone of display screen (103) leave clearance (B) in, with this wearing and tearing that reduce the visual zone of display screen (103), the front of glass panel (104) leans on outer edge protruding to be equipped with location structure (104B), supplies screen lid circle (101) to cover the inner circle edge location on glass panel (104).

6. An intelligent automobile instrument according to claim 5, wherein one side of the inner ring of the isolation step (104a) extends towards the edge of the visual area of the display screen (103), and the outer ring of the isolation step (104a) extends towards the edge of the glass panel (104);

or/and the salient points are semi-spherical;

or/and the edge of the isolation step (104a) is in a smooth arc shape;

or/and the isolation step (104a) is provided with a yielding part (104c) for yielding the mounting clamping columns for the rear shell (102) and the screen cover ring (101), so that the isolation step (104a) forms an open ring.

7. The intelligent automobile instrument as claimed in claim 1, wherein the fixing device comprises a plurality of large elastic chucks (1a) and small elastic chucks (1b) which are arranged on a screen fixing ring (1) of the automobile instrument around a display screen, the large elastic chucks (1a) are arranged on the upper side of the display screen, the rest positions are small elastic chucks (1b), large elastic clamping grooves (2a) are arranged on the outer side wall of a shading cylinder (2) of the automobile instrument corresponding to the large elastic chucks (1a), large elastic buckles are formed by combining the large elastic chucks (1a) and the large elastic clamping grooves (2a), small elastic clamping grooves (2b) are arranged on the outer side wall of the shading cylinder (2) of the automobile instrument corresponding to the small elastic chucks (1b), and small elastic buckles are formed by combining the small elastic chucks (1b) and the small elastic clamping grooves (2b), and the end heads of the large elastic chuck (1a) and the small elastic chuck (1b) are fixedly wrapped with clearance elimination pads (1c) for eliminating clearances, and the large elastic chuck (1a) and the small elastic chuck (1b) are in a pointed shape.

8. An intelligent automobile instrument according to claim 7, wherein the anti-backlash pad (1c) is made of felt material; the anti-backlash pad (1c) is adhered to the large elastic chuck (1a) or the small elastic chuck (1b) through back adhesive;

or/and the number of the small elastic chucks (1b) positioned at the lower side of the screen is less than that of the large elastic chucks (1a), and the small elastic chucks (1b) and the large elastic chucks (1a) are arranged in a left-right staggered mode.