CN108515908A - A kind of automobile head-up display control circuit - Google Patents
A kind of automobile head-up display control circuit Download PDFInfo
- Publication number
- CN108515908A CN108515908A CN201810287475.1A CN201810287475A CN108515908A CN 108515908 A CN108515908 A CN 108515908A CN 201810287475 A CN201810287475 A CN 201810287475A CN 108515908 A CN108515908 A CN 108515908A
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- module
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- microcontroller
- control circuit
- differential signal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multimedia (AREA)
- Instrument Panels (AREA)
Abstract
A kind of automobile head-up display control circuit, including：Data processing module, the data processing module are microcontroller and low-voltage differential signal deserializer chip, and the low-voltage differential signal deserializer chip connects the microcontroller by universal asynchronous receiving-transmitting transmitter；Motor drive module, the motor drive module driving motor, the motor drive module pass through SPI and the single chip communication；The information of acquisition is fed back to the microcontroller by position feedback module, the position feedback module；The low-voltage differential signal received decoding is transferred to the display module by display module, the low-voltage differential signal deserializer chip.Scheme compared with the existing technology, HUD control circuits of the invention have following advantage：1. projected position can be adjusted according to the actual demand of client；2. using micro-step control, to reduce the noise of motor of product, while keeping adjusting finer and smoother；3. having self diagnosis detection function.
Description
Technical field
The present invention relates to electricity field more particularly to display devices, more particularly to automotive electronics head-up display device, specifically
Be a kind of automobile head-up display control circuit.
Background technology
Automobile new line display is called automobile head-up display（Head Up Display）, abbreviation HUD.It is popularized in automobile
Today, traffic accident grow in intensity, and traffic accident has become the first killer of current lives and properties.Therefore, automobile
Safety becomes a Main way of future automobile development.The design of HUD is researched and developed for the vehicle run at high speed.In high speed
When driving, especially night high speed traveling when, to avoid driver's viewing instrument of bowing from showing or watch sound equipment and show, in front
Emergency is met to be possible to because having little time to cause the accident due to adopting an effective measure.
HUD is exactly that extremely fine and smooth care is embodied at crucial moment, which shows instrument in vehicle traveling process
Important information（Such as speed）It projects on front windshield, driver can be made not have to the letter that can be seen in instrument of bowing
Breath, can not only help the speed to draw oneself up to the new hand that velocity estimated is lacked experience, avoid in many speed-limit road sections
It breaks rules and regulations because of hypervelocity, it is often more important that it can make driver's immediate reading under conditions of the big visual field is not shifted, and brains is always
Optimal viewing state is kept awakely.
Existing design scheme：
HUD can be divided into suspension type HUD and the desk-top HUD of instrument by fixed form.Suspension type HUD is fixed on above driver
On sunshading board, such arrangement form, which has led to HUD information, will be projected in the upper area of windshield.And instrument desk
Formula HUD is then integrally fixed on the console in front of driver, and such arrangement form just determines that HUD information will be projected in
The front region of windshield.
The advantages of suspension type HUD, is that product suitability is higher, is relatively simple to install.And one of disadvantage is to occupy screening
The function of positive plate；The two of disadvantage, which are integrally fixed on sunshading board, relatively less to stablize, and causes projection information to show unstable；Disadvantage it
Three are that projection information is located at the top region of windshield, it is difficult to realize that driver looks squarely.
Suspension type HUD is projected in upper windscreen, and driver still needs sight in the past when observing projection information
The road conditions of side carry out the transfer of certain amplitude upwards.It is regarded although blinder than the front that rotary head is seen caused by vehicle device screen or mobile phone screen
It is spaced much smaller, but still is not really optimum efficiency.In contrast, the Projection Display of the desk-top HUD equipment of instrument is in windshield
Lower section, eyes, road conditions, the projection information of driver are in same plane, this ensures that no matter driver is on observation road
Condition, or projection information is read, front can be looked squarely, ensures safety.On the other hand attached in front of driver as being attached to
Equipment, the experience being more than functionally that it brings for driver, it is also to need that whether can increase injury risk at the time of emergency
An important indicator being considered.Suspension type HUD is due to being fixed on the sunshading board being inherently not sufficiently stable, at the time of emergency
Emergency brake vehicle, due to inertia, head is easy to bump against HUD, and when air bag pops up, there is also the risks for puncturing air bag；And instrument
Desk-top HUD is inherently fixed in front of steering wheel, will not because of inertia shift position, risk is not also punctured to air bag.Phase
Than for, the safety coefficient of the desk-top HUD of instrument occupies greater advantage.
But the desk-top HUD of instrument is by semitransparent reflector plate at present（Combiner）The display area of formation is relatively fixed, different
The visual experience effect of user is different, is unable to micro-stepping adjustable visual angle.
Invention content
The purpose of the present invention is to provide a kind of a kind of automobile head-up displays that can optimize all user's visual effects
Device control circuit.
In order to solve the above technical problems, a kind of automobile head-up display control circuit provided by the invention, including：At data
Module is managed, the data processing module is microcontroller and low-voltage differential signal deserializer chip, the low-voltage differential signal
Deserializer chip connects the microcontroller by universal asynchronous receiving-transmitting transmitter；Motor drive module, the motor drive module
Driving motor, the motor drive module pass through SPI and the single chip communication；Position feedback module, the position feedback mould
The information of acquisition is fed back to the microcontroller by block；Display module, the low-voltage differential signal deserializer chip will receive
Low-voltage differential signal decoding be transferred to the display module.
The motor drive module uses motor drive ic driving motor.
The position feedback module feeds back to the microcontroller using discrete component acquisition position information.
The low-voltage differential signal received decoding is passed through rgb color mould by the low-voltage differential signal deserializer chip
Formula is transferred to the display module.
The display module shows information using film crystal tubular type display screen.
The motor is stepper motor.
Scheme compared with the existing technology, HUD control circuits of the present invention have following advantage：
1. projected position can be adjusted according to the actual demand of client；
2. using micro-step control, to reduce the noise of motor of product, while keeping adjusting finer and smoother；
3. having self diagnosis detection function.
Description of the drawings
Fig. 1 is a kind of automobile head-up display control circuit functional block diagram of the present invention；
Fig. 2 is a kind of automobile head-up display control circuit motor micro-step control figure of the present invention；
Fig. 3 is a kind of automobile head-up display control circuit motor position control flow chart of the present invention.
Specific implementation mode
A kind of automobile head-up display control circuit of the present invention is described in further detail below in conjunction with the accompanying drawings.
The present invention low noise, can micro-stepping adjust HUD control circuits include data processing module, display module, motor
Drive module and position feedback module are motor-driven same comprising low noise sonication, micro-stepping adjusting, position feedback function
When can realize the closed-loop control of product by position feedback, while signal is controlled by optimization processing, realizes low noise, micro-
Walk regulatory function.Motor driving uses current driver mode so that and phase current can obtain more precise control in each stage,
It is effectively improved torque ripple and mechanicalness noise.The data processing and display module, motor driving adjustment module, position feedback
Module is respectively constituted using professional integrated chip and discrete component, and diagnostic function is perfect, it is ensured that the reliability and drop of control circuit
The harm that low product failure is brought.
As shown in FIG. 1 to 3, HUD control circuits of the present invention, data processing module use dedicated low-voltage differential signal
Deserializer chip and microcontroller, deserializer is from various work informations in automobilism are acquired from instrument, such as speed, various media
Temperature, engine operating condition etc. be output on thin film transistor (TFT) and show, utilize simultaneously by the information decoding to reception
Shadow casting technique projects content onto and is shown on front windshield, can ensure the data of transmission than test by error code in the process
Correctly.Motor driving adjustment module controls the angle of semitransparent reflector plate to change projected display region so that difference is used
Family can obtain best visual experience.Motor uses current mode micro-step control mode, one circle of rotation to be divided into 64 micro-steppings, position tune
Section is finer and smoother, and each stage uses current control, changes velocity of rotation by changing electric current, ensures motor when defined
It is interior to reach specified position, certain holding electric current is given after motor stalls, ensures the stability of projected position, electricity
Flow pattern micro-step control mode effectively improves torque ripple and mechanicalness noise.Motor position information is fed back in the use of position sensor
Ensure that motor does not lose step.Motor driving can detect electric motor short circuit using the intelligent chip of profession, open a way, the malfunctions such as stall,
Microcontroller is fed back to by SPI communication, microcontroller takes corresponding security mechanism to reduce product failure band according to fault type
The harm come.Coordinating AD samplings to monitor each branch voltage simultaneously ensures that product is operated in normal voltage range.
Specifically, the technology for adjusting projection angle using motor driving semitransparent reflector plate is public using those skilled in the art
The technical solution known, details are not described herein.
The preferred embodiment of the invention is illustrated above, but the invention be not limited to it is described
Embodiment, those skilled in the art can also make various equivalent under the premise of without prejudice to the invention spirit
Modification or replacement, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (6)
1. a kind of automobile head-up display control circuit, which is characterized in that including：
Data processing module, the data processing module are microcontroller and low-voltage differential signal deserializer chip, the low electricity
Pressure difference sub-signal deserializer chip connects the microcontroller by universal asynchronous receiving-transmitting transmitter；
Motor drive module, the motor drive module driving motor, the motor drive module pass through SPI and the microcontroller
Communication；
The information of acquisition is fed back to the microcontroller by position feedback module, the position feedback module；
The low-voltage differential signal received decoding is transferred to institute by display module, the low-voltage differential signal deserializer chip
State display module.
2. a kind of automobile head-up display control circuit according to claim 1, which is characterized in that the motor drives mould
Block uses motor drive ic driving motor.
3. a kind of automobile head-up display control circuit according to claim 1, which is characterized in that the position feedback mould
Block feeds back to the microcontroller using discrete component acquisition position information.
4. a kind of automobile head-up display control circuit according to claim 1, which is characterized in that the low voltage difference
The low-voltage differential signal received is decoded and is transferred to the display module by rgb color pattern by signal deserializer chip.
5. a kind of automobile head-up display control circuit according to claim 1, which is characterized in that the display module is adopted
Information is shown with film crystal tubular type display screen.
6. a kind of automobile head-up display control circuit according to claim 1, which is characterized in that the motor is stepping
Motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810287475.1A CN108515908A (en) | 2018-04-03 | 2018-04-03 | A kind of automobile head-up display control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810287475.1A CN108515908A (en) | 2018-04-03 | 2018-04-03 | A kind of automobile head-up display control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN108515908A true CN108515908A (en) | 2018-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810287475.1A Pending CN108515908A (en) | 2018-04-03 | 2018-04-03 | A kind of automobile head-up display control circuit |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010070066A (en) * | 2008-09-18 | 2010-04-02 | Toshiba Corp | Head-up display |
| WO2016056199A1 (en) * | 2014-10-07 | 2016-04-14 | 株式会社デンソー | Head-up display device, and display method for head-up display |
| CN206653988U (en) * | 2017-03-03 | 2017-11-21 | 佛山趣行互动科技有限公司 | A kind of adjustable head-up display |
| CN107561713A (en) * | 2017-10-24 | 2018-01-09 | 龚伟俊 | A kind of head-up display device |
-
2018
- 2018-04-03 CN CN201810287475.1A patent/CN108515908A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010070066A (en) * | 2008-09-18 | 2010-04-02 | Toshiba Corp | Head-up display |
| WO2016056199A1 (en) * | 2014-10-07 | 2016-04-14 | 株式会社デンソー | Head-up display device, and display method for head-up display |
| CN206653988U (en) * | 2017-03-03 | 2017-11-21 | 佛山趣行互动科技有限公司 | A kind of adjustable head-up display |
| CN107561713A (en) * | 2017-10-24 | 2018-01-09 | 龚伟俊 | A kind of head-up display device |
Non-Patent Citations (2)
| Title |
|---|
| 李瑞福: "《自动控制原理及应用》", 31 January 2017, 电子科技大学出版社 * |
| 邹丽新: "《单片微型计算机实验与实践》", 30 April 2017, 苏州大学出版社 * |
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Application publication date: 20180911 |