CN107180614A - Vehicle-carrying display screen automatic recovery system, control method and back of the body optical detection circuit - Google Patents
Vehicle-carrying display screen automatic recovery system, control method and back of the body optical detection circuit Download PDFInfo
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- CN107180614A CN107180614A CN201710492995.1A CN201710492995A CN107180614A CN 107180614 A CN107180614 A CN 107180614A CN 201710492995 A CN201710492995 A CN 201710492995A CN 107180614 A CN107180614 A CN 107180614A
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- recovery system
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- 238000001514 detection method Methods 0.000 title claims abstract description 34
- 238000011084 recovery Methods 0.000 title claims abstract description 31
- 230000003287 optical effect Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000005611 electricity Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
Classifications
-
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/3406—Control of illumination source
-
- 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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Abstract
The present invention relates to a kind of vehicle-carrying display screen automatic recovery system, control method and back of the body optical detection circuit, the vehicle-carrying display screen automatic recovery system, including MCU module, ARM modules, power module, TFT display panel modules and backlight detection circuit module；MCU module is connected with ARM modules and power module respectively, for controlling vehicle-carrying display screen automatic recovery system to work；ARM modules are connected with MCU module and TFT display panel modules respectively, for controlling TFT display panel modules to work；Power module is connected with MCU module and TFT display panel modules respectively, and power supply is provided for TFT display panel modules；Backlight detection circuit module one end is connected with MCU module, and the other end is connected between power module and TFT display panel modules；Circuit is detected by increasing TFT display backlights in vehicle-carrying display screen control system, the function of product is greatly enhanced, meets the demand of user, at utmost improve the utilization rate of vehicle-carrying display screen, the utilization rate of PA-system particularly in display screen.
Description
Technical field
The invention belongs to vehicle-carrying display screen technical field, and in particular to a kind of vehicle-carrying display screen automatic recovery system, control
Method and back of the body optical detection circuit.
Background technology
The display screen of current car audio system mainly shows the information of broadcast station information, song information and video display frequency,
With the development of present In-vehicle networking and CAN message, the content shown by it is increasingly enriched, and has vital to user
Effect；But existing car audio system display screen is in use, because vehicle-mounted voltage is unstable, display may result in
Shield blank screen, so the function of audio entertainment system far can not meet user's request, system availability is low, causes user to embrace
Resentment.
The content of the invention
The present invention devises a kind of vehicle-carrying display screen automatic recovery system, control method and back of the body optical detection circuit, and it is solved
The problem of easily there is blank screen in existing vehicle-carrying display screen of having determined, utilization rate is low.
In order to solve above-mentioned technical problem, present invention employs following scheme：
Vehicle-carrying display screen automatic recovery system, including MCU module, ARM modules, power module and TFT display panel modules；MCU
Module is connected with ARM modules and power module respectively, for controlling vehicle-carrying display screen automatic recovery system to work；ARM modules point
It is not connected with MCU module and TFT display panel modules, for controlling TFT display panel modules to work；Power module respectively with MCU moulds
Block and the connection of TFT display panel modules, power supply is provided for TFT display panel modules；Wherein, in addition to backlight detection circuit module,
Backlight detection circuit module is that TFT backlights detect circuit module；Backlight detection circuit module one end is connected with MCU module, and its is another
One end is connected between power module and TFT display panel modules.
Preferably, backlight detection circuit module is used to control power module, recovers vehicle-carrying display screen automatic recovery system
Function.
Preferably, MCU module controls the vehicle-carrying display screen automatic recovery system work to include control vehicle-carrying display screen certainly
The startup of dynamic recovery system；The control TFT display panel module work of ARM modules includes controlling startup and the work(of TFT display panel modules
It can recover.
Correspondingly, the present invention also provides the control method that a kind of vehicle-carrying display screen recovers automatically, including MCU, power supply, TFT
Display screen and back of the body optical detection circuit；MCU is connected with power supply；Power supply is connected with MCU and TFT display screens respectively；Backlight detection electricity
Road one end is connected with MCU, and its other end is connected between power supply and TFT display screens；It is wherein further comprising the steps of：
S1：Backlight detects electric circuit inspection power circuit, when vehicle-mounted driving voltage exception occurs without output；Testing result is fed back
To MCU；
S2：MCU receives testing result, and controls car-mounted display screen system to restart；
S3：TFT display screens start and functional rehabilitation.
Preferably, in addition to ARM, ARM are connected with MCU and TFT display screens respectively；MCU controls vehicle-carrying display screen by ARM
It is automatic to recover.
Preferably, car-mounted display screen system is vehicle-carrying display screen automatic recovery system described above.
Correspondingly, the present invention also provides a kind of back of the body optical detection circuit；Including input and output end；Also include the pole of voltage stabilizing two
Pipe, triode, first resistor, second resistance, 3rd resistor, the 4th resistance and the first electric capacity, the second electric capacity, the 3rd electric capacity；
The base stage of triode and the positive pole of voltage-regulator diode are connected；The colelctor electrode of triode connects with 3rd resistor and the 4th resistance respectively
Connect；The negative pole of voltage-regulator diode is connected with first resistor；First resistor is connected with input；3rd resistor other end connection numeral
Voltage one end；The connection of 4th resistance is connected with output end；Tie point, the first electric capacity are provided between input and first resistor
It is arranged in tie point；The second branch road is provided between first resistor and voltage-regulator diode, the second electric capacity is arranged at the second branch road
On；The 3rd branch road is provided between voltage-regulator diode and triode, second resistance is arranged on the 3rd branch road；4th resistance and output
The 4th branch road is provided between end；3rd electric capacity is arranged on the 4th branch road.
The vehicle-carrying display screen automatic recovery system, control method and back of the body optical detection circuit have the advantages that：
The present invention detects circuit by adding TFT display backlights in vehicle-carrying display screen control system, greatly enhances product
Function, meet the demand of user, farthest improve sound equipment in the utilization rate of vehicle-carrying display screen, particularly display screen
The utilization rate of device, make product design that there is hommization.
Brief description of the drawings
Fig. 1：A kind of vehicle-carrying display screen automatic recovery system structural representation of the present invention；
Fig. 2：A kind of backlight detection circuit diagram of vehicle-carrying display screen automatic recovery system of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, the present invention will be further described：
Fig. 1 shows that a kind of vehicle-carrying display screen automatic recovery system, including MCU module, ARM modules, power module and TFT show
Display screen module；MCU module is directly connected with ARM modules and power module respectively, is mainly used in control vehicle-carrying display screen automatically extensive
Complex system works, especially in the case of vehicle-mounted voltage is unstable；ARM modules respectively directly with MCU module and TFT display screen moulds
Block is connected, and is mainly used in providing information control TFT display panel module work according to MCU module；Power module respectively with MCU module
With the connection of TFT display panel modules, it is mainly used in TFT display panel modules and power supply is provided；Further, present invention additionally comprises backlight inspection
Slowdown monitoring circuit module, backlight detection circuit module one end is connected with MCU module, and its other end is connected to power module and TFT is shown
Between panel module, backlight detection circuit module is used to control power module, to recover the work(of vehicle-carrying display screen automatic recovery system
Energy；Using such scheme so that when vehicle-mounted voltage is unstable, the function of display screen can be recovered automatically, particularly strengthen aobvious
The practicality of PA-system, has been extremely improved prior art in display screen, product is had hommization.
Preferably, with reference to such scheme, as shown in figure 1, MCU module controls vehicle-carrying display screen automatic recovery system saddlebag
Include startup, closing and the functional rehabilitation of control vehicle-carrying display screen automatic recovery system；ARM modules control TFT display panel modules
Work includes controlling startup and the functional rehabilitation of TFT display panel modules；MCU module controls TFT by ARM modules in the present embodiment
The startup of display panel module and functional rehabilitation.
Correspondingly, with reference to such scheme, the present invention also provides the control method that a kind of vehicle-carrying display screen recovers automatically, including
MCU, power supply, TFT display screens and back of the body optical detection circuit；MCU is connected with power supply, is mainly used in control vehicle-carrying display screen automatically extensive
Complex system works, and MCU control vehicle-carrying display screen automatic recovery system work includes controlling vehicle-carrying display screen automatic recovery system
Start, close and functional rehabilitation；Power supply is connected with MCU and TFT display screens respectively, is mainly used in TFT display screens and is provided electricity
Source；；It is that TFT carries on the back optical detection circuit to carry on the back optical detection circuit；TFT backlights detection circuit on one side is connected with MCU, and its other end is connected to
Between power supply and TFT display screens, TFT back of the body optical detection circuits are used to control power module, are recovered automatically with recovering vehicle-carrying display screen
The function of system, the restarting of MCU control systems；It is wherein further comprising the steps of：
S1：First.Backlight detects electric circuit inspection power circuit, when vehicle-mounted driving voltage exception occurs without output；By detection knot
Fruit feeds back to the MCU；It is unstable or disconnect etc. that the abnormal vehicle-mounted voltage that includes occurs in vehicle-mounted driving voltage；
S2：Then, MCU receives testing result, and controls car-mounted display screen system to restart；
S3：Finally, TFT display screens start and functional rehabilitation, and eliminate backlight circuit and occur abnormal causing display screen blank screen.
Preferably, with reference to such scheme, the present invention also provides the control method that a kind of vehicle-carrying display screen recovers automatically and also wrapped
ARM is included, ARM is connected with MCU and TFT display screens respectively, be mainly used in providing information control TFT display screen work according to MCU；This
In embodiment, MCU controls vehicle-carrying display screen to recover automatically by ARM.
Preferably, with reference to such scheme, the control method that a kind of vehicle-carrying display screen that the present invention is provided recovers automatically, wherein
Car-mounted display screen system is vehicle-carrying display screen automatic recovery system described above.
Correspondingly, as shown in Figure 2；The present invention also provides a kind of back of the body optical detection circuit, especially TFT back of the body optical detection circuits；
Including input and output end, input connects TFT display screens, output end and MCU connections；Wherein, in addition to voltage-regulator diode,
Triode, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4 and the first electric capacity C1, the second electric capacity C2,
3rd electric capacity C3；Wherein, the positive pole connection of the base stage of triode and voltage-regulator diode；The colelctor electrode of triode is electric with the 3rd respectively
Hinder R3 and the 4th resistance R4 connections；The negative pole of voltage-regulator diode is connected with first resistor R1；First resistor R1 is connected with input；
3rd resistor R3 other ends connection digital voltage DVDD one end, voltage is generally 3.3V；4th resistance R4 connections connect with output end
Connect；Tie point is provided between input and first resistor R1, the first electric capacity C1 is arranged in tie point；First resistor R1
The second branch road is provided between voltage-regulator diode, the second electric capacity C2 is arranged on the second branch road；Voltage-regulator diode and triode it
Between be provided with the 3rd branch road, second resistance R2 is arranged on the 3rd branch road；The 4th branch road is provided between 4th resistance R4 and output end；
3rd electric capacity C3 is arranged on the 4th branch road；Emitter stage, tie point, the second branch road, the 3rd branch road and the 4th of triode
Branch road is reference potential end, is defined by being grounded；, can be for vehicle-carrying display screen in driving by using above-mentioned back of the body optical detection circuit
In the case of electric voltage exception, detect and by MCU control display screens functional rehabilitation or restart.
The present invention is by using such scheme, by adding TFT display backlights in vehicle-carrying display screen control system
Circuit is detected, the function of product is greatly enhanced, meets the demand of user, farthest improve the utilization of vehicle-carrying display screen
The utilization rate of PA-system in rate, particularly display screen, make product design that there is hommization.
Exemplary description is carried out to the present invention above in conjunction with accompanying drawing, it is clear that realization of the invention is not by aforesaid way
Limitation, it is or not improved by the present invention as long as employing the various improvement of inventive concept and technical scheme of the present invention progress
Design and technical scheme directly apply to other occasions, within the scope of the present invention.
Claims (7)
1. vehicle-carrying display screen automatic recovery system, it is characterised in that aobvious including MCU module, ARM modules, power module and TFT
Display screen module；The MCU module is connected with the ARM modules and the power module respectively, for controlling the car-mounted display
Shield automatic recovery system work；The ARM modules are connected with the MCU module and the TFT display panel modules respectively, for controlling
Make the TFT display panel modules work；The power module is connected with the MCU module and the TFT display panel modules respectively,
Power supply is provided for the TFT display panel modules；Wherein, in addition to backlight detection circuit module, the back of the body optical detection circuit mould
Block one end is connected with the MCU module, and its other end is connected between the power module and the TFT display panel modules.
2. vehicle-carrying display screen automatic recovery system according to claim 1, it is characterised in that the back of the body optical detection circuit mould
Block is used to control the power module, recovers the function of the vehicle-carrying display screen automatic recovery system.
3. vehicle-carrying display screen automatic recovery system according to claim 1, it is characterised in that the MCU module controls institute
Stating the work of vehicle-carrying display screen automatic recovery system includes controlling the startup of the vehicle-carrying display screen automatic recovery system；The ARM
Module controls the TFT display panel modules work to include controlling startup and the functional rehabilitation of the TFT display panel modules.
4. the control method that vehicle-carrying display screen recovers automatically, it is characterised in that including MCU, power supply, TFT display screens and backlight
Detect circuit；The MCU is connected with the power supply；The power supply is connected with the MCU and the TFT display screens respectively；It is described
Backlight detection circuit on one side is connected with the MCU, and its other end is connected between the power supply and the TFT display screens；Wherein
It is further comprising the steps of：
S1：Power circuit described in the backlight detection electric circuit inspection, when vehicle-mounted driving voltage exception occurs without output；Will detection
As a result the MCU is fed back to；
S2：The MCU receives the testing result, and controls car-mounted display screen system to restart；
S3：The TFT display screens start and functional rehabilitation.
5. the control method that vehicle-carrying display screen recovers automatically according to claim 4, it is characterised in that also including ARM, described
ARM is connected with the MCU and the TFT display screens respectively；The MCU controls the vehicle-carrying display screen automatic by the ARM
Recover.
6. the control method that vehicle-carrying display screen recovers automatically according to claim 4, it is characterised in that the vehicle-carrying display screen
System is the vehicle-carrying display screen automatic recovery system described in any one of the claims 1 to 3.
7. optical detection circuit is carried on the back, including input and output end；Characterized in that, also including voltage-regulator diode, triode, first
Resistance, second resistance, 3rd resistor, the 4th resistance and the first electric capacity, the second electric capacity, the 3rd electric capacity；The base of the triode
Pole is connected with the positive pole of the voltage-regulator diode；The colelctor electrode of the triode respectively with the 3rd resistor and it is described 4th electricity
Resistance connection；The negative pole of the voltage-regulator diode is connected with the first resistor；The first resistor is connected with the input；Institute
State 3rd resistor other end connection digital voltage one end；The 4th resistance connection is connected with the output end；In the input
Tie point is provided between end and the first resistor, first electric capacity is arranged in the tie point；First electricity
The second branch road is provided between resistance and the voltage-regulator diode, second electric capacity is arranged on second branch road；The voltage stabilizing
The 3rd branch road is provided between diode and the triode, the second resistance is arranged on the 3rd branch road；Described 4th
The 4th branch road is provided between resistance and the output end；3rd electric capacity is arranged on the 4th branch road.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710492995.1A CN107180614B (en) | 2017-06-26 | 2017-06-26 | Vehicle-carrying display screen automatic recovery system, control method |
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| CN201710492995.1A CN107180614B (en) | 2017-06-26 | 2017-06-26 | Vehicle-carrying display screen automatic recovery system, control method |
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| CN107180614A true CN107180614A (en) | 2017-09-19 |
| CN107180614B CN107180614B (en) | 2019-10-11 |
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Cited By (3)
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| CN110264973A (en) * | 2019-06-27 | 2019-09-20 | 广州小鹏汽车科技有限公司 | The driving method of bias self-repairing circuit and bias self-repairing circuit |
| CN111505970A (en) * | 2019-01-31 | 2020-08-07 | 厦门雅迅网络股份有限公司 | Self-recovery system and method for vehicle-mounted remote display screen |
| CN112466240A (en) * | 2020-12-14 | 2021-03-09 | 惠州市德赛西威汽车电子股份有限公司 | Vehicle-mounted display screen voltage abnormity detection and automatic reset circuit, method and system |
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| CN107180614B (en) | 2019-10-11 |
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