CN104071009A - Processing method for display failure of vehicle-mounted meter and vehicle-mounted meter system - Google Patents

Abstract

The invention provides a method for processing display failure of a vehicle-mounted instrument and a vehicle-mounted instrument system. The method includes the following steps in sequence: S10, the main controller detects the working state of the display controller, and the backlight detection module detects the working state of the backlight module; S20 1. The main controller judges whether the on-vehicle instrument display fails according to the detected display controller and the working state of the backlight module, if so, then execute step S30, if not, then return to step S10; S30, the main controller sends an instruction to make the emergency display module pop up Select the information, select the information to prompt the user that the instrument fails and prompt the user whether to agree to switch to the emergency display module to display the vehicle condition information, if agreed, then perform step S40, if not, then end the program; S40, the main controller sends the vehicle condition information to the emergency display module. The display module drives the emergency display module to display vehicle condition information. The method and system provided by the invention can effectively display the vehicle condition information required by the user when the vehicle instrument display fails.

Description

A processing method for vehicle-mounted instrument display failure and vehicle-mounted instrument system

technical field

The invention relates to the field of automobile control, in particular to a processing method for vehicle-mounted instrument display failure and a vehicle-mounted instrument system.

Background technique

With the development of automobile and its electronic product technology, users have higher and higher requirements for automobile comfort and humanized design. With the improvement of living standards, more and more users own private cars, and most users will encounter the problem of in-vehicle instrument failure during driving. During the driving process, the on-board instruments on the vehicle that originally displayed the vehicle condition information of various working states of the vehicle suddenly failed, so that the vehicle condition information such as vehicle speed and driving mileage could not be displayed, which brought a lot of inconvenience to the user and even brought driving danger. For example, when the instrument cannot display the speed of the vehicle, the danger of violating traffic rules is very likely to occur on the speed-limited section of the expressway. For another example, when the car's safety parts and other components fail, if the on-board instrument cannot display information closely related to driving, it will bring great trouble to maintenance. For example, when the full LCD instrument display fails, the vehicle speed, speed, fuel, water temperature, oil pressure, cooling fluid level, brake fluid level, tire pressure, gear position, ABS system status, braking system status, SRS system status, The status, electricity, and power of the engine system cannot be displayed through the on-board instrument, which will greatly increase the risk of driving and the cost and time of vehicle maintenance, which will bring great inconvenience to users. However, there is no vehicle in the prior art that can provide remedial measures when an on-board instrument fails.

It should be understood that the statements in this section only provide background information related to the present invention and may or may not constitute so-called prior art.

Contents of the invention

The technical problem to be solved by the present invention is to provide a treatment method and a processing system capable of remedial measures when the on-board instrument fails when there is no remedial measure in the prior art when the on-board instrument fails.

The technical solution adopted by the present invention to solve the above-mentioned technical problems is to provide a processing method for vehicle instrument display failure, which includes the following steps in turn:

S10, the main controller of the vehicle instrument detects the working state of the display controller of the vehicle instrument, and the backlight detection module detects the working state of the backlight module of the vehicle instrument;

S20, the main controller judges whether the on-vehicle instrument display is invalid according to the detected working status of the display controller and the backlight module, if yes, execute step S30, if not, return to step S10;

S30, the main controller of the on-board instrument sends an instruction to make the emergency display module pop up selection information, the selection information prompts the user that the instrument fails and prompts the user whether to agree to switch to the emergency display module to display vehicle condition information, if the user agrees to switch, then execute step S40 , if the user disagrees, end the program;

S40. The main controller sends the received vehicle condition information to the emergency display module and drives the emergency display module to display the vehicle condition information.

In the above processing method, the detection of the working state of the display controller of the on-board instrument includes detecting whether there is a communication interruption between the display controller and the main controller, and if there is an interruption, simultaneously detecting the duration of the communication interruption.

In the above processing method, the detecting the working state of the backlight module includes detecting the backlight driving voltage of the backlight module.

In the above processing method, the judging whether the display of the on-board instrument is invalid refers to the main controller of the on-board instrument judging whether the duration of the interruption of the communication between the display controller and it reaches the predetermined time, and the main controller simultaneously judges whether the backlight driving voltage is lower than the predetermined time. voltage, if the duration of the communication interruption reaches a predetermined time or the backlight driving voltage is lower than a predetermined voltage, it is determined that the display is invalid.

In the above processing method, the step S30 includes the main controller issuing an instruction to make the emergency display module issue a voice alarm to remind the user that the display of the on-board instrument is invalid.

In the above processing method, the main controller communicates with the display controller through a CAN bus.

In the above processing method, the emergency display module is a vehicle-mounted DVD display.

In the above processing method, the DVD display screen is a TFT liquid crystal display screen.

In order to better solve the above technical problems, the present invention also provides a vehicle instrument system with a display failure recovery function, which mainly includes: the main display device of the vehicle instrument, the main controller of the vehicle instrument, the emergency display module and the backlight detection device;

The main controller of the vehicle-mounted instrument is used to control the work of the vehicle-mounted instrument, detect and judge whether the vehicle-mounted instrument shows failure, and control the work of the emergency display module when the vehicle-mounted instrument fails to display;

The main display device of the on-board instrument includes: a main display screen for displaying the vehicle condition information of the vehicle under normal conditions, and a main display screen for communicating with the main controller and driving the main display screen to display the vehicle condition according to the instructions of the main controller Information display controller;

An emergency display module, used to display vehicle condition information when the main display device fails;

The backlight detection module is used to detect the working state of the backlight module of the vehicle instrument and send the working state to the main controller.

In the above vehicle instrument system, the backlight detection module includes a voltage detection module for detecting the backlight driving voltage of the backlight module, and the voltage detection module is electrically connected to the backlight module and the main controller at the same time.

In the above vehicle instrument system, the emergency display module is a vehicle DVD display.

In the above vehicle instrument system, the DVD display is a TFT liquid crystal display.

The processing method for display failure of the on-board instrument provided by the present invention mainly detects the working state of the display controller of the on-board instrument and the working state of the backlight module of the on-board instrument respectively through the main controller and the backlight detection module, and according to the above-mentioned working state through the main controller It is judged whether the display of the vehicle instrument is invalid, and when the display of the vehicle instrument is invalid, the main controller controls the emergency display module to display vehicle condition information according to the needs of the user. Therefore, this method mainly uses the emergency display module, the main controller, and the backlight detection module to still display the vehicle condition when the on-board instrument display fails. the

Description of drawings

Fig. 1 is the flow chart of the processing method that the on-board instrument display failure provided by the present invention;

Fig. 2 is a flow chart of the processing method for display failure of vehicle instrument in a preferred embodiment provided by the present invention;

Fig. 3 is a functional block diagram of an on-vehicle instrument system with display failure recovery function provided by the present invention. the

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should therefore not be construed as limiting the invention.

The method for display failure of the on-board instrument provided by the present invention mainly uses the main controller to detect and judge the failure of the instrument display, and then uses the emergency display module to replace the original display screen of the on-board instrument to display the vehicle condition information, thereby bringing convenience to the user.

Referring to Fig. 1 to Fig. 3, the method for displaying failure of the on-board instrument provided by the present invention mainly includes the following steps in sequence:

S10, the main controller 30 of the vehicle-mounted instrument detects the working state of the display controller 10 of the vehicle-mounted instrument, and the backlight detection module 50 detects the working state of the backlight module of the vehicle-mounted instrument; during the operation of the vehicle, the main controller 30 of the vehicle-mounted instrument is responsible While communicating with the whole vehicle, control the work of the display controller 10 of the on-board instrument according to the situation of the whole vehicle, and it sends an instruction to make the display controller 10 drive the main display screen 20 of the on-board instrument (that is, under the normal state of the on-board instrument, that is, the normal condition of the on-board instrument The display screen used to display the vehicle condition) displays the vehicle condition information of the vehicle in a predetermined manner, such as vehicle speed, speed, fuel, water temperature, oil pressure, cooling fluid level, brake fluid level, tire pressure, gear position, ABS system status , brake system status, engine system status, power, etc.

S20, the main controller 30 judges whether the on-vehicle instrument display is invalid according to the working state of the detected display controller 10 and the backlight module, if so, then execute step S30, if not, then return to step S10; that is, the main controller 30 The control program judges whether the on-board instrument is invalid based on the working status of the display controller 10 and the backlight module. If it fails, take remedial measures. If not, return to step S10 to continue testing.

S30, the main controller 30 of the on-board instrument sends an instruction to make the emergency display module 40 pop up selection information, and the selection information prompts the user that the instrument fails and prompts the user whether to agree to switch to the emergency display module 40 to display the vehicle condition information. If the user agrees to switch, then execute the step S40, if the user disagrees, end the program; that is, when the on-board instrument fails, the main controller 30 activates the emergency display module 40 . Specifically, the main controller 30 first drives the emergency display module 40 to pop up prompt information to the user for the user to make an emergency choice.

S40, the main controller 30 sends the received vehicle condition information to the emergency display module 40 and drives the emergency display module 40 to display the vehicle condition information.

Therefore, after the instrument display becomes invalid, the present invention can display the information displayed on the instrument through the emergency display module 40 to display the vehicle condition, thereby ensuring safe and convenient driving for the user. Since display screen failure is basically divided into display screen drive failure or backlight failure, so in a preferred embodiment of the present invention, the main controller 30 detects the working state of the display controller 10 of the vehicle instrument including detection of the display controller 10 and the main Whether there is a communication interruption in the controller 30, if there is an interruption, detect the duration of the communication interruption at the same time, of course, if there is no interruption, then continue to detect whether the communication interruption occurs. The communication diagnosis can diagnose whether the drive of the display controller 10 is normal. More preferably, detecting the working state of the backlight module by the backlight detection module 50 includes detecting the backlight driving voltage of the backlight module, and the voltage detection can detect whether the backlight of the display screen is normal. The main controller 30 can detect and judge whether the display of the vehicle instrument is invalid according to multiple methods. Preferably, the present invention judges whether the display of the vehicle instrument is invalid by judging whether the duration of the communication interruption between the display controller 10 and the vehicle instrument is determined by the main controller 30 of the vehicle instrument. When the predetermined time is reached, the main controller 30 simultaneously determines whether the backlight driving voltage is lower than the predetermined voltage. If the communication interruption lasts for the predetermined time or the backlight driving voltage is lower than the predetermined voltage, it is determined that the display is disabled. That is, as long as the communication interruption time reaches the predetermined time, it means that the communication interruption between the display controller 10 and the main controller 30 does occur, and the on-board instrument will inevitably fail to display. Similarly, if the backlight driving voltage is lower than the predetermined voltage, even if the vehicle instrument can be driven, it is difficult for the user to see the displayed information, so it still belongs to the instrument display failure. When the detected communication interruption lasts for a predetermined time or the detected backlight driving voltage reaches a predetermined voltage or both, the main controller 30 determines that the display is disabled. Through these two approaches, the instrument can accurately determine whether the display of the on-board instrument is invalid.

It is worth noting that the above-mentioned main controller 30 pops up a prompt message for the user to input the result of his choice, and the pop-up prompt message may or may not have a sound for an alarm. In a preferred embodiment of the present invention, step S30 also includes the main controller 30 issuing an instruction to make the emergency display module 40 issue a voice alarm to remind the user that the on-board instrument display is missing, so that the user can know the fault of the vehicle in time. The main controller 30 can also directly drive the emergency display module 40 to display the vehicle condition when the on-board instrument display fails. In the embodiment of the present invention, the main controller 30 preferably communicates with the display controller 10 through the CAN bus, so as to improve the communication speed and accuracy between the main controller 30 and the display controller 10 . The main controller 30 can communicate with the display controller 10 through a serial port. Since the vehicle is usually equipped with a DVD display, preferably, the emergency display module 40 provided by the present invention is a vehicle-mounted DVD display to reduce costs. It directly drives the DVD display screen through the main controller 30 to display the vehicle condition in a predetermined display mode. More preferably, the DVD display is a TFT (Thin Film Transistor, ie Thin Film Field Effect Transistor) liquid crystal display. The TFT liquid crystal display can complete the display of all the information of the instrument, and its display is clearer, and it can realize multiplexing of the display area. Of course, the emergency display module 40 can also be an independent liquid crystal display device on the vehicle, which can include an independent spare liquid crystal display to display the vehicle condition, and a set for driving the spare liquid crystal display under the instruction of the main controller 30 drive displayed. The display screen and the driver for driving the display screen are well known to those skilled in the art, and will not be repeated here.

The present invention also provides an on-board instrument system with a failure display function, that is, the system can detect and judge whether the on-board instrument fails, and can take remedial measures when it fails. The system mainly includes: a main display device of the vehicle instrument, a main controller 30 of the vehicle instrument, an emergency display module 40 and a backlight detection device.

The main controller 30 of the on-board instrument is used to control the entire work of the on-board instrument. It is responsible for communicating with the whole vehicle, and simultaneously controls the work of the display controller 10 of the on-board instrument according to the situation of the whole vehicle. It sends instructions to make the display controller 10 The main display screen 20 that drives the on-board instrument displays the vehicle condition information of the whole vehicle in a predetermined manner. The main controller 30 detects and judges whether the on-board instrument display fails and controls the work of the emergency display module 40 when the on-board instrument display fails. and the working status of the backlight module to determine whether the vehicle instrument display is invalid. The main display device of the vehicle instrument includes a main display screen 20 and a display controller 10 . The main display screen 20 is used to display the vehicle condition information of the vehicle under normal conditions, and the display controller 10 is used to communicate with the main controller 30 and drive the main display screen 20 to display the vehicle condition information in a predetermined manner according to the instructions of the main controller 30 . The emergency display module 40 is used to display vehicle condition information when the main display device fails, that is, the emergency display module 40 is used as a backup display device when the main display device fails. The backlight detection module 50 is used to detect the backlight drive voltage of the backlight module of the vehicle instrument and sends the backlight drive voltage to the shown main controller 30. Since the vehicle instrument is equipped with a backlight module, the backlight drive voltage is detected by the backlight detection module 50 and fed back. The main controller 30 can judge whether there is a display failure in the main display device.

In a preferred embodiment of the present invention, the backlight detection module 50 includes a voltage detection module for detecting the backlight driving voltage of the backlight module, and the voltage detection module is electrically connected to the backlight module and the main controller 30 at the same time. The emergency display module 40 is a vehicle-mounted DVD display. The DVD display is more preferably a TFT liquid crystal display. It is worth noting that those skilled in the art know that all vehicle-mounted instruments have a backlight, and the backlight is generated by the backlight module, and the backlight driving voltage is the driving voltage in the backlight module that drives the backlight to turn on. Therefore, the structures of the backlight module and the voltage detection module for detecting the driving voltage of the backlight are well known to those skilled in the art, and will not be repeated here. Moreover, the above-mentioned system provided by the present invention has simple overall structure and low cost.

Referring to FIG. 2 and FIG. 3 again, in this embodiment, the emergency display module 40 adopts a vehicle-mounted DVD display. The processing method of the on-board instrument display failure and the working principle of the system provided by the present invention are roughly introduced as follows in conjunction with the embodiments shown in Figure 2 and Figure 3:

First execute step S10: the main controller 30 of the on-board instrument detects the working state of the display controller 10 of the on-board instrument,

And the backlight detection module 50 detects the working state of the backlight module of the vehicle instrument. Wherein, the main controller 30 detects whether there is a communication interruption between the display controller 10 and it. If there is a communication interruption, the main controller 30 detects the duration of the event of the communication interruption at the same time; the backlight detection module 50 includes a backlight driver for detecting the backlight module. Voltage.

Then step S20 is executed: the main controller 30 judges whether the display failure of the on-board instrument occurs. Specifically, if there is no communication interruption during the above detection process, the main controller 30 only judges whether the backlight driving voltage U from the backlight detection module 50 is lower than the predetermined voltage 23V, and if it is lower than 23V, the main controller 30 judges that The on-board instrument display fails and executes step S30. If it is not lower than 23V, it indicates that the instrument display is normal, and then returns to step S10; It will judge whether the duration T of the detected communication interruption reaches the predetermined time 5S, and at the same time, the main controller 30 will also judge whether the backlight driving voltage U from the backlight detection module 50 is lower than the predetermined voltage 23V. If the time T reaches the predetermined time or the backlight driving voltage U is lower than the predetermined voltage, it is judged as a display failure. Of course, if both reach the predetermined value, it is also a display failure. If it is determined that the display is invalid, execute step S30, otherwise return to step S10.

Step S30, the main controller 30 of the on-board instrument sends an instruction to make the DVD display screen pop up selection information, the selection information prompts the user that the instrument fails and prompts the user whether to agree to switch to the emergency display module 40 to display the vehicle condition information, if the user agrees to switch, then execute the step S30 S40, if the user disagrees, end the procedure. Wherein, if the DVD display screen is in use, the whole vehicle makes the DVD preferentially execute the instruction of the main controller 30, so that the DVD display screen stops playing the video and starts to pop up a prompt message, if the user agrees to switch, then execute step S40, otherwise the program ends .

S40, the main controller 30 sends the received vehicle condition information to the emergency display module 40 and drives the DVD display to display the vehicle condition information.

Therefore, when the LCD instrument display fails while the user is driving, the instrument can automatically request the DVD display to replace the on-board instrument display, making driving more convenient and intimate. Moreover, even if a fault occurs while the car is running, displaying the car condition through the DVD display can save the user from stopping on the roadside to wait for on-site maintenance.

To sum up, the processing method and system provided by the present invention can perform remediation when the on-board instrument display fails, so as to ensure the safety of the user and provide convenience for the user to drive, and the system has a simple structure and low cost.

In the description of this specification, reference to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" means that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be mechanical connection or electrical connection, or two The internal communication of each element may be directly connected or indirectly connected through an intermediary. Those skilled in the art can understand the specific meanings of the above terms according to specific situations.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (12)

1. the aobvious non ageing processing method of onboard instruments, is characterized in that, comprises the following steps successively:

The master controller of S10, onboard instruments detects the mode of operation of the display control switch of onboard instruments, and back light detecting module detects the mode of operation of the backlight module of onboard instruments;

S20, described master controller judge according to the display control switch detecting and the mode of operation of backlight module whether onboard instruments shows inefficacy, if so, perform step S30, if not, return to step S10;

The master controller of S30, onboard instruments sends instruction makes emergent display module eject selection information, described selection information indicating customer meter breaks down and points out user whether to agree to switch to emergent display module and shows vehicle condition information, if user agrees to switch, perform step S40, if user disagrees with, termination routine;

S40, described master controller are sent to the vehicle condition information receiving emergent display module and drive emergent display module to show described vehicle condition information.

2. processing method as claimed in claim 1, it is characterized in that, the mode of operation of the display control switch of described detection onboard instruments comprises whether detection display controller and described master controller occur communication disruption, if there is communication disruption, detects the lasting time of described communication disruption simultaneously.

3. processing method as claimed in claim 2, is characterized in that, the mode of operation of described detection backlight module comprises the backlight driving voltage that detects backlight module.

4. processing method as claimed in claim 3, it is characterized in that, describedly judge whether onboard instruments shows that the master controller refer to onboard instruments of losing efficacy judge that display control switch communicates with the lasting time of interruption and whether reaches the schedule time, and master controller judges that whether backlight driving voltage is lower than predetermined voltage simultaneously, if the lasting time of described communication disruption reaches the schedule time or described backlight driving voltage lower than predetermined voltage, be judged as and show and lost efficacy.

5. processing method as claimed in claim 1, is characterized in that, described step S30 comprises that described master controller sends instruction and makes emergent display module send audio alert with prompting user onboard instruments demonstration inefficacy.

6. the processing method as described in any one in claim 1 to 5, is characterized in that, described master controller and described display control switch are by CAN bus communication.

7. the processing method as described in any one in claim 1 to 5, is characterized in that, described emergent display module is vehicle-carrying DVD read-out.

8. processing method as claimed in claim 7, is characterized in that, described DVD read-out is TFT LCDs.

9. there is demonstration inefficacy and remedy an onboard instruments system for function, it is characterized in that, comprising: the main read out instrument of onboard instruments, the master controller of onboard instruments, emergent display module and detecting device backlight;

The master controller of described onboard instruments, for controlling the work of controlling the display module of meeting an urgent need when work, the detection of onboard instruments judges whether onboard instruments shows that inefficacy and onboard instruments show inefficacy;

The main read out instrument of described onboard instruments comprises: under normality, show vehicle vehicle condition information main display and for communicating by letter with described master controller and showing the display control switch of vehicle condition information according to main display described in the order-driven of described master controller;

Emergent display module, shows vehicle condition information while breaking down for described main read out instrument;

Back light detecting module, for detection of the mode of operation of the backlight module of onboard instruments and master controller shown in described mode of operation is sent to.

10. onboard instruments system as claimed in claim 9, is characterized in that, described back light detecting module comprises the voltage detection module for detection of the backlight driving voltage of backlight module, and described voltage detection module is electrically connected to described backlight module and master controller simultaneously.

11. onboard instruments systems as described in claim 9 or 10, is characterized in that, described emergent display module is vehicle-carrying DVD read-out.

12. onboard instruments systems as claimed in claim 11, is characterized in that, described DVD read-out is TFT LCDs.