CN112046284A - Display recovery system of automobile liquid crystal instrument - Google Patents
Display recovery system of automobile liquid crystal instrument Download PDFInfo
- Publication number
- CN112046284A CN112046284A CN202010952081.0A CN202010952081A CN112046284A CN 112046284 A CN112046284 A CN 112046284A CN 202010952081 A CN202010952081 A CN 202010952081A CN 112046284 A CN112046284 A CN 112046284A
- Authority
- CN
- China
- Prior art keywords
- unit
- liquid crystal
- display
- graphic processing
- crystal instrument
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 71
- 238000011084 recovery Methods 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 39
- 230000002159 abnormal effect Effects 0.000 claims abstract description 36
- 238000004891 communication Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Arrangement of adaptations of instruments
-
- B60K35/22—
Abstract
The invention discloses a display recovery system of an automobile liquid crystal instrument, a logic monitoring unit and a micro-control processing core are arranged in a micro-control unit, is used for monitoring the working state of the graphic processing unit, if the graphic processing core for driving the liquid crystal instrument display unit to display the entertainment information or the graphic processing core for driving the liquid crystal instrument display unit to display the instrument information is abnormal, starting a standby graphic processing kernel to replace an abnormal graphic processing kernel for driving; if all the graphic processing kernels are abnormal, the micro control unit calls the micro control processing kernels to drive the liquid crystal instrument display unit to display instrument information, the external monitoring unit monitors the working state of the micro control unit, and if the working state of the micro control unit is abnormal, the system resetting unit is started to reset and restart all the units of the system.
Description
Technical Field
The invention relates to the technical field of automobile instruments, in particular to a display recovery system of an automobile liquid crystal instrument.
Background
Liquid crystal instruments are adopted in middle-high-end vehicle models of various current large automobile manufacturers, and when the middle-high-end vehicle models are more fit with times and science and technology, a huge exertion space is provided for realizing intelligent informatization of automobiles. Because the automobile instrument adopts the liquid crystal display to display, the entertainment information and the instrument data information are all displayed on the liquid crystal display in a centralized way, and the accuracy and the reliability of the data displayed by the liquid crystal display are very important. At present, when a liquid crystal instrument on the market is in failure, the liquid crystal instrument is usually recovered in a single forced restarting mode, and the whole liquid crystal instrument needs to be reset and restarted no matter an entertainment function part or an instrument display part fails. In the process of restarting the liquid crystal instrument system, instrument information cannot be displayed, so that potential safety hazards are brought.
Disclosure of Invention
The invention provides a safer display recovery system of an automobile liquid crystal instrument.
The invention relates to a display recovery system of an automobile liquid crystal instrument, which comprises a Micro Control Unit (MCU), a Graphic Processing Unit (GPU), a liquid crystal instrument display unit, an external monitoring unit and a system resetting unit, wherein a plurality of graphic processing cores are arranged in the graphic processing unit, and comprise a graphic processing core for driving the liquid crystal instrument display unit to display entertainment information, a graphic processing core for driving the liquid crystal instrument display unit to display instrument information and a standby graphic processing core;
the micro control unit is internally provided with a logic monitoring unit and a micro control processing kernel, wherein the logic monitoring unit is used for monitoring the working state of the graphic processing unit, and if the graphic processing kernel used for driving the liquid crystal instrument display unit to display entertainment information or the graphic processing kernel used for driving the liquid crystal instrument display unit to display instrument information is abnormal, the standby graphic processing kernel is started to replace the abnormal graphic processing kernel for driving;
and the external monitoring unit is used for monitoring the working state of the micro control unit, and if the working state of the micro control unit is abnormal, the system resetting unit is started to reset and restart the liquid crystal instrument display unit.
The system monitors the graphic processing kernel in the graphic processing unit through a logic monitoring unit in the micro control unit; if the graphic processing kernel for driving the liquid crystal instrument display unit to display the entertainment information is abnormal, starting a standby graphic processing kernel to drive a liquid crystal instrument display unit to display entertainment information; if the graphic processing kernel for driving the liquid crystal instrument display unit to display the instrument information is abnormal, starting a standby graphic processing kernel to drive a liquid crystal instrument display unit to display entertainment information; if all the graphic processing kernels are abnormal, the micro-control unit calls the micro-control processing kernels to drive the liquid crystal instrument display unit to display the instrument information, then, monitoring the working state of the micro control unit through an external monitoring unit; and if the working state of the micro control unit is abnormal, the system resetting unit is started to reset and restart the display unit of the liquid crystal instrument.
The display recovery system is characterized in that the graphic processing unit of the display recovery system is provided with a standby kernel, the logic monitoring unit monitors the graphic processing unit, and if the current kernel is abnormal, the standby kernel is directly switched to drive, so that the display of the liquid crystal display is not influenced. And it has not only passed the control of the image processing unit of the logic monitoring unit, have still passed the control of the little control unit of the external monitoring unit, have realized the second grade control to the instrument display, when only the entertainment function part of the display unit of the liquid crystal instrument appears the mistake, can keep the normal display of the display part of the instrument, only when the two-stage control is all unusual, just start the system and reset the unit and reset the whole instrument display system and reset, it has reduced the probability that resets through the system by a wide margin, has promoted the reliability of the system and the security that the liquid crystal instrument uses.
Drawings
Fig. 1 is a schematic system structure diagram of a liquid crystal instrument system.
Detailed Description
As shown in fig. 1, a display recovery system for a liquid crystal instrument of an automobile includes a micro control unit, a graphics processing unit, a liquid crystal instrument display unit, an external monitoring unit, and a system resetting unit, where the graphics processing unit is provided with a plurality of graphics processing cores, including a graphics processing core for driving the liquid crystal instrument display unit to display entertainment information, a graphics processing core for driving the liquid crystal instrument display unit to display instrument information, and a standby graphics processing core;
the micro control unit is internally provided with a logic monitoring unit and a micro control processing kernel, wherein the logic monitoring unit is used for monitoring the working state of the graphic processing unit, and if the graphic processing kernel used for driving the liquid crystal instrument display unit to display entertainment information or the graphic processing kernel used for driving the liquid crystal instrument display unit to display instrument information is abnormal, the standby graphic processing kernel is started to replace the abnormal graphic processing kernel for driving;
and the external monitoring unit is used for monitoring the working state of the micro control unit, and if the working state of the micro control unit is abnormal, the system resetting unit is started to reset and restart the liquid crystal instrument display unit.
The abnormal judgment of the graphic processing kernel is that the logic control unit reads the register data in the graphic processing kernel, if the register data can be read, the graphic processing kernel is normal, and if the register data cannot be read, the graphic processing kernel is abnormal.
The micro control unit sends heartbeat packet data to the external monitoring unit, the external monitoring unit monitors whether the heartbeat packet data are updated or not, the updating overtime time of the heartbeat packet data is set, when the updating time of the heartbeat packet data exceeds the overtime time, the micro control unit is judged to be abnormal, the overtime time is 3-5 times of a task period, and if the overtime time is less than 3 times, the system is updated faster due to the fact that the system is reset faster, the liquid crystal instrument is restarted too fast, and potential safety hazards exist; if the timeout time is longer than 5 times, the system is in an abnormal state for a long time as the system waits for resetting, so that the liquid crystal instrument is restarted too fast, and high potential safety hazards exist.
The system monitors the graphic processing kernel in the graphic processing unit through the logic monitoring unit in the micro control unit, if the graphic processing kernel for driving the liquid crystal instrument display unit to display the entertainment information is abnormal, then the standby graphic processing kernel is started to drive the liquid crystal instrument display unit to display the entertainment information, if the graphic processing kernel for driving the liquid crystal instrument display unit to display the instrument information is abnormal, then the standby graphic processing kernel is started to drive the liquid crystal instrument display unit to display the entertainment information, if all the graphic processing kernels are abnormal, the micro control unit calls the micro control processing kernel to drive the liquid crystal instrument display unit to display the instrument information, and then, monitoring the working state of the micro control unit through an external monitoring unit, and if the working state of the micro control unit is abnormal, starting a system resetting unit to reset and restart the liquid crystal instrument display unit.
The display recovery system has the advantages that the graphic processing unit is provided with the standby kernel, the logic monitoring unit monitors the graphic processing unit, and if the current kernel is abnormal, the standby kernel is directly switched to drive, so that the display of the liquid crystal display is not influenced. And it has not only passed the control of the image processing unit of the logic monitoring unit, have still passed the control of the little control unit of the external monitoring unit, have realized the second grade control to the instrument display, when only the entertainment function part of the display unit of the liquid crystal instrument appears the mistake, can keep the normal display of the display part of the instrument, only when the two-stage control is all unusual, just start the system and reset the unit and reset the whole instrument display system and reset, it has reduced the probability that resets through the system by a wide margin, has promoted the reliability of the system and the security that the liquid crystal instrument uses.
The graphic processing unit preferentially processes and displays the liquid crystal instrument display unit. Because the graphic processing unit and the micro control unit have data communication, when the graphic processing unit can not display at all, the data communication is interrupted, and the micro control unit is used as a display unit to process and display. In the micro control unit, the micro control processing kernel has relatively weak function, but can display some basic indicator light information, the alarm state informs a driver of emergency treatment, the micro control processing kernel in the micro control unit displays the instrument information on the liquid crystal instrument display unit, the logic monitoring unit detects and feeds back the display state of the liquid crystal instrument display unit by each graphic processing kernel of the graphic processing unit, and when the display state is abnormal, the micro control processing kernel checks the display state of the liquid crystal instrument display unit to display the instrument information.
If the graphic processing unit and the micro control unit are still abnormal, the external monitoring unit monitors the working state of the micro control unit, detects that the micro control unit is completely abnormal, and resets and restarts the liquid crystal instrument display unit, the micro control unit and the graphic processing unit through the system resetting unit. The system is also provided with a CAN communication unit which is communicated with the micro control unit to receive the instrument information transmitted by the graphic processing kernel and the micro control processing kernel and send the instrument information to the liquid crystal instrument display unit for displaying.
And the graphics processing unit resets the abnormal graphics processing kernel after the standby graphics processing kernel replaces the abnormal graphics processing kernel, and sets the reset graphics processing kernel as the standby graphics processing kernel again, so that the capability of the graphics processing unit for driving the liquid crystal instrument display unit to display can be further improved.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (6)
1. A display recovery system of an automobile liquid crystal instrument comprises a micro control unit, a graphic processing unit, a liquid crystal instrument display unit, an external monitoring unit and a system resetting unit, and is characterized in that a plurality of graphic processing cores are arranged in the graphic processing unit, wherein the graphic processing cores comprise a graphic processing core for driving the liquid crystal instrument display unit to display entertainment information, a graphic processing core for driving the liquid crystal instrument display unit to display instrument information and a standby graphic processing core;
the micro control unit is internally provided with a logic monitoring unit and a micro control processing kernel, wherein the logic monitoring unit is used for monitoring the working state of the graphic processing unit, and if the graphic processing kernel used for driving the liquid crystal instrument display unit to display entertainment information or the graphic processing kernel used for driving the liquid crystal instrument display unit to display instrument information is abnormal, the standby graphic processing kernel is started to replace the abnormal graphic processing kernel for driving;
and the external monitoring unit is used for monitoring the working state of the micro control unit, and if the working state of the micro control unit is abnormal, the system resetting unit is started to reset and restart the liquid crystal instrument display unit.
2. The display recovery system for the liquid crystal instrument of the automobile according to claim 1, further comprising a CAN communication unit, wherein the CAN communication unit is in communication connection with the micro control unit, and is used for receiving the instrument information of the graphic processing core and the micro control processing core and sending the instrument information to the liquid crystal instrument display unit.
3. The display recovery system for an automotive liquid crystal instrument according to claim 1, wherein the graphics processing unit resets the abnormal graphics processing core after the standby graphics processing core replaces the abnormal graphics processing core, and resets the reset graphics processing core as the standby graphics processing core again.
4. The display recovery system for vehicle liquid crystal instrument according to claim 1, wherein each graphics processing core in the graphics processing core unit has a register, and the logic control unit reads data of the register in the graphics processing core, and determines that the graphics processing core is normal if the data of the register can be read, and determines that the graphics processing core is abnormal if the data of the register cannot be read.
5. The display recovery system for liquid crystal instrument of automobile according to claim 1, wherein the micro control unit sends heartbeat packet data to the external monitoring unit, the external monitoring unit monitors whether the heartbeat packet data is updated or not, sets an update timeout time of the heartbeat packet data, and determines that the micro control unit is abnormal when the update time of the heartbeat packet data exceeds the timeout time.
6. The display recovery system for liquid crystal instrument of claim 1, wherein the timeout period is 3-5 times the duty cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010952081.0A CN112046284B (en) | 2020-09-11 | 2020-09-11 | Display recovery system of automobile liquid crystal instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010952081.0A CN112046284B (en) | 2020-09-11 | 2020-09-11 | Display recovery system of automobile liquid crystal instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112046284A true CN112046284A (en) | 2020-12-08 |
| CN112046284B CN112046284B (en) | 2023-11-07 |
Family
ID=73610143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010952081.0A Active CN112046284B (en) | 2020-09-11 | 2020-09-11 | Display recovery system of automobile liquid crystal instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112046284B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113777981A (en) * | 2021-08-27 | 2021-12-10 | 煤炭科学技术研究院有限公司 | Fault diagnosis and voice alarm method for coal mine safety monitoring substation |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015163506A1 (en) * | 2014-04-25 | 2015-10-29 | 전자부품연구원 | Task allocation system and method for operation of graphic processing unit |
| CN107161007A (en) * | 2017-06-16 | 2017-09-15 | 上海赫千电子科技有限公司 | A kind of vehicular meter and the integration apparatus and method of middle control |
| WO2017193325A1 (en) * | 2016-05-12 | 2017-11-16 | 深圳市中工巨能科技有限公司 | Double monitoring-activating measurement and control device |
| CN107415690A (en) * | 2017-04-25 | 2017-12-01 | 黑龙江连特科技有限公司 | Automobile, automobile instrument and its control method |
| CN108121630A (en) * | 2016-11-29 | 2018-06-05 | 株式会社理光 | Electronic device, method for restarting and recording medium |
| CN110356228A (en) * | 2019-06-20 | 2019-10-22 | 浙江众泰汽车制造有限公司 | A kind of automobile instrument system and its control method |
| CN111055683A (en) * | 2019-12-31 | 2020-04-24 | 上海擎感智能科技有限公司 | Vehicle and vehicle instrument information display equipment and method applied to vehicle |
| CN211280643U (en) * | 2019-11-19 | 2020-08-18 | 上海赫千电子科技有限公司 | Standby display system for vehicle instrument |
| US20200262294A1 (en) * | 2019-02-18 | 2020-08-20 | Ford Global Technologies, Llc | Backup instrument cluster display for an automobile |
-
2020
- 2020-09-11 CN CN202010952081.0A patent/CN112046284B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015163506A1 (en) * | 2014-04-25 | 2015-10-29 | 전자부품연구원 | Task allocation system and method for operation of graphic processing unit |
| WO2017193325A1 (en) * | 2016-05-12 | 2017-11-16 | 深圳市中工巨能科技有限公司 | Double monitoring-activating measurement and control device |
| CN108121630A (en) * | 2016-11-29 | 2018-06-05 | 株式会社理光 | Electronic device, method for restarting and recording medium |
| CN107415690A (en) * | 2017-04-25 | 2017-12-01 | 黑龙江连特科技有限公司 | Automobile, automobile instrument and its control method |
| CN107161007A (en) * | 2017-06-16 | 2017-09-15 | 上海赫千电子科技有限公司 | A kind of vehicular meter and the integration apparatus and method of middle control |
| US20200262294A1 (en) * | 2019-02-18 | 2020-08-20 | Ford Global Technologies, Llc | Backup instrument cluster display for an automobile |
| CN110356228A (en) * | 2019-06-20 | 2019-10-22 | 浙江众泰汽车制造有限公司 | A kind of automobile instrument system and its control method |
| CN211280643U (en) * | 2019-11-19 | 2020-08-18 | 上海赫千电子科技有限公司 | Standby display system for vehicle instrument |
| CN111055683A (en) * | 2019-12-31 | 2020-04-24 | 上海擎感智能科技有限公司 | Vehicle and vehicle instrument information display equipment and method applied to vehicle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113777981A (en) * | 2021-08-27 | 2021-12-10 | 煤炭科学技术研究院有限公司 | Fault diagnosis and voice alarm method for coal mine safety monitoring substation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112046284B (en) | 2023-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112046284A (en) | Display recovery system of automobile liquid crystal instrument | |
| CN113824887B (en) | Master control chip with function safety, all-round looking system and method | |
| CN110936908A (en) | Quick response method and device of vehicle-mounted display system based on operating system | |
| US20230065148A1 (en) | Method for transferring control over vehicle in automotive electronic system, and apparatus | |
| CN115509477B (en) | Method, device, equipment and medium for dynamically displaying character images in vehicle-mounted display screen | |
| CN115214362B (en) | Vehicle-mounted instrument system and control method thereof | |
| CN109154852B (en) | Semiconductor device and display device | |
| CN112078514B (en) | TFT screen alarm lamp self-checking method and device | |
| CN110271418B (en) | Display system of vehicle-mounted cabin | |
| WO2020184088A1 (en) | Display control device, display device, display control system, and reliability determination program | |
| WO2020062905A1 (en) | Oled display device and control method therefor | |
| CN111258672A (en) | Method for switching display card and electronic equipment | |
| CN109817162B (en) | Notification message response method, processor, driving chip and display device | |
| JP2000267948A (en) | Electronic equipment, control method of electronic equipment and recording medium recording software for controlling electronic equipment | |
| CN117319967A (en) | Vehicle-mounted device and control method thereof | |
| CN112659896A (en) | System and method for displaying backing-up auxiliary information in automobile backup and automobile | |
| US7644309B2 (en) | Recovering a hardware module from a malfunction | |
| US11809768B2 (en) | Display control apparatus, display apparatus, display control system, and storage medium | |
| CN218069317U (en) | Three-color LED screen control system suitable for engineering vehicle data display | |
| CN212381240U (en) | Vehicle-mounted equipment control host | |
| CN117270663A (en) | UART communication-based vehicle power supply processing method, device and equipment | |
| CN111654544A (en) | Vehicle-mounted equipment control host and communication control method thereof | |
| CN116841272A (en) | Alarm system and method for cabin domain controller | |
| CN116069148A (en) | Screen display method and device, storage medium and electronic equipment | |
| CN107909975B (en) | Method for upgrading time schedule controller, display control device and display equipment thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |