CN116945900A - Display method of vehicle indicator lamp - Google Patents
Display method of vehicle indicator lamp Download PDFInfo
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- CN116945900A CN116945900A CN202311167683.5A CN202311167683A CN116945900A CN 116945900 A CN116945900 A CN 116945900A CN 202311167683 A CN202311167683 A CN 202311167683A CN 116945900 A CN116945900 A CN 116945900A
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 230000006870 function Effects 0.000 claims abstract description 43
- 238000004891 communication Methods 0.000 claims abstract description 28
- 238000009877 rendering Methods 0.000 claims abstract description 14
- 230000005856 abnormality Effects 0.000 claims description 4
- 230000007257 malfunction Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 abstract description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007488 abnormal function Effects 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- 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—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The invention relates to the technical field of automobile indicator lamp display, and discloses a display method of a vehicle indicator lamp, which comprises the following steps: the vehicle functional component generates a corresponding indicator light display signal according to a preset indicator function and sends the indicator light display signal to a micro control unit corresponding to the function; the micro control unit monitors the communication state between the micro control unit and the intelligent cabin platform of the vehicle, encrypts the display signal of the indicator lamp when the communication is normal, and sends the encrypted display signal to the intelligent cabin platform of the vehicle; and calling a preset hardware display chip through a preset independent process in the intelligent cabin platform of the vehicle, and performing hardware layer rendering on the vehicle signal display unit based on the display signals of the indicator lights to control the corresponding indicator lights to display. The invention can prevent the display function of the indicator lamp from being influenced by other functions, ensure the display correctness of the indicator lamp from different angles of signal transmission and display of the indicator lamp, further ensure that the vehicle can provide accurate and reliable function or fault indication, and improve the running safety of the vehicle.
Description
Technical Field
The invention relates to the technical field of automobile indicator lamp display, in particular to a display method of a vehicle indicator lamp.
Background
The automobile instrument panel comprises a large number of indicator lamps, and the indicator lamps can be used for reminding a user when the user performs function control on the automobile or when the automobile detects abnormal functions. The existing indicator light display method only focuses on the display effect and the user experience, and ignores the function safety. And when equipment breaks down or is unusual, in traditional pilot lamp display scheme, pilot lamp display process can be in same process with instrument other functions, and directly call the direct demonstration of graphic software interface, can make the display process receive other function influence easily, also probably have and call to the circumstances that the display shows that the process appears wrong from the software interface, be difficult to accurately, in time reflect the problem, bring the potential safety hazard for the user.
Disclosure of Invention
In view of the above, the invention provides a display method of a vehicle indicator lamp, so as to solve the problem that potential safety hazards exist due to inaccurate and untimely display of the vehicle indicator lamp.
The display method of the vehicle indicator lamp provided by the embodiment of the invention comprises the following steps:
the vehicle functional component generates a corresponding indicator light display signal according to a preset indicator function and sends the indicator light display signal to a micro control unit corresponding to the function;
the micro control unit monitors the communication state between the micro control unit and the intelligent cabin platform of the vehicle, encrypts the display signal of the indicator lamp when the communication is normal, and sends the encrypted display signal to the intelligent cabin platform of the vehicle;
and calling a preset hardware display chip through a preset independent process in the intelligent cabin platform of the vehicle, and performing hardware layer rendering on the vehicle signal display unit based on the display signals of the indicator lights to control the corresponding indicator lights to display.
According to the display method of the vehicle indicator lamp, the indicator lamp display signals are generated according to the preset indication function and sent to the micro control unit, the indicator lamp display signals are encrypted and then sent to the vehicle intelligent cabin platform when the micro control unit and the vehicle intelligent cabin platform are in normal communication, and the vehicle intelligent cabin platform calls the preset hardware display chip to conduct hardware layer rendering on the vehicle signal display unit through an independent process to control the corresponding indicator lamp to display. According to the invention, the display function of the indicator lamp can be prevented from being influenced by other functions by encrypting the display signal of the vehicle and rendering the hardware layer of the independent process, so that the display correctness of the indicator lamp is ensured from different angles of signal transmission and display of the indicator lamp, and further, the vehicle can be ensured to provide accurate and reliable function or fault indication, and the running safety of the vehicle is improved.
In an alternative embodiment, after the indicator light is displayed, the method further comprises: the display chip interface is preset to read back and monitor the rendering content of the vehicle signal display unit to obtain an indicator lamp display image, the indicator lamp display image is checked with the original indicator lamp image, if the check is successful, the indicator lamp display is judged to be correct, and otherwise, the display is judged to be wrong.
According to the invention, the display result checking process is added after the display of the indicator lamp, so that whether an error occurs in the interface calling to the display process or not is judged, and the display correctness of the indicator lamp of the vehicle can be further ensured.
In an alternative embodiment, a vehicle feature includes: the vehicle sensor and the vehicle controller, corresponding preset indication functions include: the function of automatically measuring and displaying abnormality of the vehicle sensor and the function of controlling the vehicle sensor by a user through the vehicle controller, the display signal of the corresponding generated indicator lamp comprises: a malfunction display signal and a function control display signal.
According to the invention, by taking all the indication functions of the indication lamps of the vehicle into consideration, different function indications are carried out on the user, and the running safety of the vehicle can be fully ensured.
In an alternative embodiment, when the communication state between the micro control unit and the intelligent cabin platform of the vehicle is monitored to be a communication fault by the micro control unit, the micro control unit resets the communication parameters or restarts the communication link, and if the fault cannot be recovered, the intelligent cabin platform of the vehicle gives an alarm.
According to the invention, the communication condition between the intelligent cabin platform and the vehicle is monitored by the micro control unit, the function indication of the indicator lamp can be controlled only when the communication is normal, and the recovery is carried out when the communication is failed, so that the success rate of information transmission can be ensured. If the vehicle intelligent cabin platform can not be recovered, the vehicle intelligent cabin platform can give an alarm, a user can be prompted in advance when communication fails, the situation that accidents are caused by the fact that indication lamps are needed for indication but the indication lamps cannot be displayed is avoided, and the safety of the vehicle is further guaranteed.
In an alternative embodiment, the indicator light display signal is encrypted using an end-to-end encryption.
According to the invention, the display signal of the indicator lamp is encrypted, so that information leakage and modification can be avoided, the safety of the information is ensured, and the safety of a vehicle is further ensured.
In an alternative embodiment, the preset hardware display chip is invoked through the Openwfd display interface, and the preset hardware display chip and the corresponding Openwfd display interface thereof are pre-integrated on the motherboard of the vehicle intelligent cabin platform.
According to the invention, the calling of the hardware display chip is realized through the Openwfd display interface, so that the hardware layer rendering is carried out on the vehicle signal display unit, and the problem that errors are more likely to occur due to the adoption of software rendering can be avoided, because the software rendering is completed through a Central Processing Unit (CPU) of a computer, the computing capacity of the CPU is relatively weak, and errors are likely to occur when a graphic computing task is processed. In addition, the hardware layer rendering mode is high in efficiency and low in error rate, and readback monitoring is convenient.
In an alternative embodiment, a CRC check algorithm is used to verify the pilot lamp display image with the original pilot lamp image.
The invention checks the display image of the indicator lamp through the CRC algorithm, can correct the error in the process that the interface is called to the displayed information transmission in a high proportion, and has strong error detection capability of CRC and low detection cost.
In an alternative embodiment, when the indicator light is judged to be displaying the error, the method further comprises: the vehicle journey computer sends out an alarm signal according to the display error information and the corresponding preset alarm mode.
In an alternative embodiment, the preset mode alert includes: at least one of sound alarm, text alarm, vehicle speed control alarm and steering wheel vibration alarm.
According to the invention, the user can be timely reminded of the display fault of the indicator lamp by alarming in different modes when the indicator lamp is in display fault, and the alarm in different modes is carried out according to the display error information, so that the alarm can be flexibly processed according to the current situation, and the driving safety of the user is ensured to the greatest extent.
In an alternative embodiment, when the indicator light is judged to be displaying the error, the method further comprises: the vehicle journey computer uploads the display error information to the automobile service platform.
The invention can facilitate automobile manufacturers to find the problems of the vehicles in time and solve the problems correspondingly by reporting the display error information to the automobile service platform.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for displaying a vehicle indicator according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention is suitable for controlling the automobile instrument panel to display the scene of the indicator lamp. The embodiment of the invention provides a display method of a vehicle indicator lamp, which achieves the effect of correctly displaying the indicator lamp by controlling the display process of the vehicle indicator lamp.
The invention provides an embodiment of a display method of a vehicle indicator lamp, and fig. 1 is a flow chart of the display method of the vehicle indicator lamp according to the embodiment of the invention, as shown in fig. 1, the flow chart comprises the following steps:
step S101, the vehicle functional component generates a corresponding indicator light display signal according to a preset indicator function and sends the indicator light display signal to a micro control unit corresponding to the function.
In particular, in an embodiment of the invention, the vehicle's micro-control unit (Microcontroller Unit, MCU) is a programmable unit that integrates a variety of functions related to controlling the operation of a computer, including processor, memory, data processing, and external communication functions. The MCU is used for executing a programming program and completing a certain control task. The vehicle functional components include: the vehicle sensor and the vehicle controller, the corresponding preset indication function of different vehicle functional components includes: the function of automatically measuring and displaying abnormality of the vehicle sensor and the function of controlling the vehicle sensor by a user through the vehicle controller, and the indicator lamp display signals correspondingly generated by different preset indication functions comprise: a malfunction display signal and a function control display signal. For example, a temperature sensor of a vehicle measures that the current water temperature is too high, so that a water temperature abnormality signal is generated, and therefore a water temperature indicator lamp display signal is needed; or the driver selects the steering direction through the steering switch to generate the steering signal, so that the steering lamp display signal is needed, and at this time, the steering switch triggers the steering signal lamp controller in the vehicle electrical system, that is, sends the steering signal lamp display signal to the steering signal lamp controller, which is only used as an example and not limited thereto.
Step S102, the micro control unit monitors the communication state between the micro control unit and the intelligent cabin platform of the vehicle, encrypts the display signal of the indicator lamp when the communication is normal, and sends the encrypted display signal to the intelligent cabin platform of the vehicle.
Specifically, in the embodiment of the present invention, the vehicle intelligent cabin platform SoC (Smart Cockpit) refers to a central processing unit of a modern automobile intelligent cabin system, and is a highly integrated semiconductor device, which integrates various functional characteristics such as information entertainment, interconnection and vehicle management into one chip, so as to realize seamless intelligent operation of the vehicle cabin. The intelligent cabin platform SoC of the vehicle is wide in application and various in functions, and can realize a high-resolution touch screen, voice recognition, augmented reality display and an interactive entertainment system interconnected with a smart phone and other devices. The MCU can monitor the communication state between the MCU and the vehicle intelligent cabin platform SoC in real time, when the communication fault is monitored, the MCU resets the communication parameters or restarts the communication link, if the fault cannot be recovered, the vehicle intelligent cabin platform has abnormal serious alarm information of the vehicle, and the indicator lamp cannot be displayed at the moment. When the communication is normal, the micro control unit MCU encrypts the display signal of the indicator lamp in an End-to-End (E2E) encryption mode, but the display signal of the indicator lamp is not limited by the encryption mode, and the encrypted display signal of the indicator lamp is sent to the intelligent cabin platform SoC of the vehicle.
Step S103, calling a preset hardware display chip through a preset independent process in the intelligent cabin platform of the vehicle, and performing hardware layer rendering on the vehicle signal display unit based on the display signals of the indicator lights to control the corresponding indicator lights to display.
Specifically, in the embodiment of the present invention, the preset hardware display chip is called through the Openwfd display interface, where the Openwfd display interface is a self-contained interface of the preset hardware display chip, and the preset hardware display chip and the Openwfd display interface corresponding to the preset hardware display chip need to be integrated on a motherboard of the intelligent cabin platform of the vehicle in advance, and the preset hardware display chip is a high-pass 8155 chip or 8295 chip, but not limited to this. After receiving the display signal of the indicator lamp, the SoC of the intelligent cabin platform of the vehicle invokes the Openwfd display interface by adopting an internal preset independent process, and uses the high-pass 8155 chip or 8295 chip to perform hardware layer rendering on the vehicle signal display unit based on the display signal of the indicator lamp. At this time, the processes of other functions of the instrument panel belong to different memory address spaces, and no matter the memory errors or other logic errors can influence the normal operation of the independent processes of the indicator lights.
In addition, after the indicator lamp of the embodiment of the invention is displayed, the indicator lamp further comprises: the Openwfd display interface carries out readback monitoring on the rendering content of the vehicle instrument panel display to obtain an indicator lamp display image, adopts a CRC (Cyclic Redundancy Check, cyclic redundancy check code) checking algorithm to check the indicator lamp display image and the original indicator lamp image, judges that the indicator lamp display is correct if the check is successful, and judges that the indicator lamp display is wrong if the check is not successful. The CRC is simply referred to as a cyclic code, which is a commonly used check code with error detection and correction capability, and is only used as an example, but not limited thereto.
In an optional implementation manner, after determining that the indicator light displays an error, the embodiment of the present invention further includes: the vehicle travel computer sends out an alarm signal according to the display error information and a corresponding preset alarm mode, wherein the preset mode alarm comprises the following steps: at least one of sound alarm, text alarm, vehicle speed control alarm and steering wheel vibration alarm can timely send alarm signals to draw attention of a driver, so that driving safety is guaranteed.
In an optional implementation manner, after determining that the indicator light displays an error, the embodiment of the present invention further includes: the vehicle journey computer uploads the display error information to the automobile service platform, such as an automobile owner cloud, so that a vehicle factory can find errors in time and solve the errors.
According to the display method of the vehicle indicator lamp, the indicator lamp display signals are generated according to the preset indication function and sent to the micro control unit, the indicator lamp display signals are encrypted and then sent to the vehicle intelligent cabin platform when the micro control unit and the vehicle intelligent cabin platform are in normal communication, and the vehicle intelligent cabin platform calls the preset hardware display chip to conduct hardware layer rendering on the vehicle signal display unit through an independent process to control the corresponding indicator lamp to display. According to the invention, the display function of the indicator lamp can be prevented from being influenced by other functions by encrypting the display signal of the vehicle and rendering the hardware layer of the independent process, and the display correctness of the indicator lamp is ensured from different angles of signal transmission, indicator lamp display and display result verification, so that the vehicle can be ensured to provide accurate and reliable function or fault indication, and the running safety of the vehicle is improved.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (10)
1. A method of displaying a vehicle indicator, the method comprising:
the vehicle functional component generates a corresponding indicator light display signal according to a preset indicator function and sends the indicator light display signal to a micro control unit corresponding to the function;
the micro control unit monitors the communication state between the micro control unit and the intelligent cabin platform of the vehicle, encrypts the display signal of the indicator lamp when the communication is normal and sends the encrypted display signal to the intelligent cabin platform of the vehicle;
and calling a preset hardware display chip through a preset independent process in the intelligent cabin platform of the vehicle, and performing hardware layer rendering on the vehicle signal display unit based on the display signal of the indicator lamp to control the corresponding indicator lamp to display.
2. The method of claim 1, wherein after the indicator light is displayed, further comprising: and the preset display chip interface carries out readback monitoring on the rendering content of the vehicle signal display unit to obtain an indicator lamp display image, and checks the indicator lamp display image with the original indicator lamp image, if the check is successful, the indicator lamp display is judged to be correct, and otherwise, the display is judged to be wrong.
3. The method of claim 1, wherein the vehicle feature comprises: the vehicle sensor and the vehicle controller, corresponding preset indication functions include: the function of automatically measuring and displaying abnormality of the vehicle sensor and the function of controlling the vehicle sensor by a user through the vehicle controller, the display signal of the corresponding generated indicator lamp comprises: a malfunction signal and a function control signal.
4. The method according to claim 1, wherein when the micro control unit monitors that the communication state with the vehicle intelligent cabin platform is a communication failure, the micro control unit resets a communication parameter or restarts a communication link, and if the failure cannot be recovered, the vehicle intelligent cabin platform alarms.
5. The method of claim 1, wherein the indicator light display signal is encrypted using an end-to-end encryption.
6. The method of claim 1, wherein the preset hardware display chip is invoked via an Openwfd display interface, and wherein the preset hardware display chip and its corresponding Openwfd display interface are pre-integrated on a motherboard of the vehicle intelligent cabin platform.
7. The method of claim 2, wherein the indicator light display image is collated with the original indicator light image using a CRC check algorithm.
8. The method of claim 7, further comprising, upon determining that the indicator light is displaying an error: the vehicle journey computer sends out an alarm signal according to the display error information and the corresponding preset alarm mode.
9. The method of claim 8, wherein the preset pattern alarm comprises: at least one of sound alarm, text alarm, vehicle speed control alarm and steering wheel vibration alarm.
10. The method of claim 7, further comprising, upon determining that the indicator light is displaying an error: and uploading the display error information to an automobile service platform by the vehicle journey computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311167683.5A CN116945900A (en) | 2023-09-11 | 2023-09-11 | Display method of vehicle indicator lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311167683.5A CN116945900A (en) | 2023-09-11 | 2023-09-11 | Display method of vehicle indicator lamp |
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| Publication Number | Publication Date |
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| CN116945900A true CN116945900A (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311167683.5A Pending CN116945900A (en) | 2023-09-11 | 2023-09-11 | Display method of vehicle indicator lamp |
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| CN (1) | CN116945900A (en) |
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- 2023-09-11 CN CN202311167683.5A patent/CN116945900A/en active Pending
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