CN115571072A - Mode conversion method and device for head-up display, electronic equipment and storage medium - Google Patents
Mode conversion method and device for head-up display, electronic equipment and storage medium Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
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- 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
- B60R16/023—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 for transmission of signals between vehicle parts or subsystems
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Abstract
The embodiment of the application discloses a mode conversion method and device of a head-up display, electronic equipment and a storage medium. The method comprises the following steps: monitoring a message sending state in a bus, and acquiring CAN standard parameters corresponding to a current vehicle under the condition that the message sending state is monitored to be that a message is sent; determining waiting time in the mode conversion process of the head-up display based on the CAN standard parameters and a preset time determination algorithm; and sending the waiting time to a mode conversion control module of the head-up display, so that the mode conversion control module controls the mode of the head-up display to be converted into a target mode under the condition that the mode conversion control module monitors that a preset number of recessive bits specified by the CAN standard parameters appear in the bus in the waiting time. Based on the method, more accurate waiting time is obtained by using the CAN standard parameters, and the problem that the mode conversion of the head-up display is unsuccessful due to the adoption of fixed waiting time is avoided.
Description
Technical Field
The embodiment of the application relates to the technical field of automobile control, in particular to a mode conversion method and device of a head-up display, electronic equipment and a storage medium.
Background
When a vehicle is started, a CAN transceiver of an automobile head-up display system needs to perform mode conversion, and generally, the mode is converted from a stop mode to a reset mode first, and when a continuous preset number of recessive bits appear on a CAN bus, the mode CAN be converted from the reset mode to a final needed communication mode.
Generally, a fixed time span is set, and if a preset number of consecutive recessive bits cannot appear on the CAN bus within the time span, the CAN transceiver of the heads-up display system cannot be switched to the final communication mode, and instead, the CAN transceiver will switch back to the first stop mode, so that the frames cannot be effectively displayed.
Disclosure of Invention
The embodiment of the application provides a mode conversion method and device of a head-up display, an electronic device and a storage medium, so as to avoid unsuccessful mode conversion of the head-up display.
In a first aspect, an embodiment of the present application provides a method for mode conversion of a head-up display, where the method includes:
monitoring a message sending state in a bus, and acquiring CAN standard parameters corresponding to a current vehicle under the condition that the message sending state is monitored to be that a message is sent;
determining waiting time in the mode conversion process of the head-up display based on the CAN standard parameters and a preset time determination algorithm;
and sending the waiting time to a mode conversion control module of the head-up display, so that the mode conversion control module controls the mode of the head-up display to be converted into a target mode under the condition that the mode conversion control module monitors that a preset number of recessive bits specified by the CAN standard parameters appear in the bus in the waiting time.
In a second aspect, an embodiment of the present application further provides a device for converting a mode of a head-up display, where the device for converting a mode of a head-up display includes:
the monitoring and acquiring module is used for monitoring the message sending state in the bus and acquiring the CAN standard parameters corresponding to the current vehicle under the condition that the message sending state is monitored to be the message which is being sent;
the waiting time determining module is used for determining waiting time in the mode conversion process of the head-up display based on the CAN standard parameters and a preset time determining algorithm;
and the sending module is used for sending the waiting time to a mode conversion control module of the head-up display so as to control the mode of the head-up display to be converted into a target mode under the condition that the mode conversion control module monitors that a preset number of recessive bits specified by the CAN specification parameters appear in the bus in the waiting time.
In a third aspect, an embodiment of the present application further provides an electronic device, where the electronic device includes:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement a method of heads-up display mode conversion as provided in any embodiment of the present application.
In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the method for switching between the head-up display mode as provided in any embodiment of the present application.
According to the technical scheme of the embodiment of the application, the CAN standard parameters corresponding to the current vehicle are obtained by monitoring the message sending state in the bus and under the condition that the message sending state is monitored to be the message which is being sent; then determining the waiting time in the mode conversion process of the head-up display based on the CAN standard parameters and a preset time determination algorithm; and sending the waiting time to a mode conversion control module of the head-up display, so that the mode conversion control module controls the mode of the head-up display to be converted into a target mode under the condition that the mode conversion control module monitors that a preset number of recessive bits specified by the CAN standard parameters appear in the bus in the waiting time. Based on this, more accurate waiting time is obtained by using the CAN specification parameters, so that the mode conversion control module controls the mode of the head-up display to be converted into the target mode under the condition that the preset number of recessive bits specified by the CAN specification parameters appear in the bus in the waiting time, and the problem that the mode conversion of the head-up display is unsuccessful due to the adoption of fixed waiting time is avoided.
Drawings
Fig. 1 is a schematic flowchart illustrating a mode conversion method of a head-up display according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of an architecture relationship between a CAN transceiver and a CAN bus of a vehicle body according to a first embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a mode conversion apparatus of a head-up display according to a second embodiment of the present application;
fig. 4 is a schematic structural diagram of an electronic device according to a third embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application. It should be further noted that, for the convenience of description, only some of the structures associated with the present application are shown in the drawings, not all of them.
Example one
Fig. 1 is a flowchart of a method for mode conversion of a head-up display according to an embodiment of the present disclosure, where the method is applicable to a scenario of mode conversion of a head-up display, and the method can be executed by a device for mode conversion of a head-up display, where the device can be implemented in a hardware and/or software manner, and can be generally integrated in an electronic device such as a computer with data operation capability, and the method specifically includes the following steps:
It should be noted that, when the vehicle is started, referring to fig. 2, the structural relationship between the CAN transceiver and the vehicle body CAN bus in the head-up display system, and fig. 2 is a schematic diagram of the structural relationship between the CAN transceiver and the vehicle body CAN bus according to an embodiment of the present disclosure.
As shown in FIG. 2, when the vehicle is started, the CAN transceiver detects the operation of the CAN signal of the bus, at this time, the I/O pin of the CAN transceiver turns on the SOC power supply and transmits the CAN signal to the SOC, and the CAN Driver (CAN transceiver) of the SOC receives the CAN signal and then processes the signal and transmits the signal to the APP for HUD picture display.
During the starting process, the CAN Driver generally has a mode conversion process after receiving the signal. From Stop mode to reset mode and finally to communication mode; the whole process sets a waiting time, which is equivalent to setting the waiting time to 240 microseconds by defining the value of the configuration parameter CAN _ TIMEOUT _ DURATION to 20000 times.
However, the condition that the indication bit of Communication Mode is successfully set to 1 is that there are 11 consecutive recessive bits on the bus, and all devices on the CAN bus need to be idle after the execution is completed within the above latency (240 μ s) before the state transition is successful.
However, in the practical application process, when the load of the whole vehicle is high (which often occurs when the whole vehicle is started), the CAN Driver of the head-up display does not complete the mode conversion, and returns to the Stop mode from the Reset mode, thereby causing the HUD not to display the picture effectively.
Therefore, in this step, the message sending state in the bus is monitored, the message sending state indicates whether a message being sent exists in the bus, and the waiting time is determined again by using the method of this embodiment when the message sending state is monitored to be the message being sent.
Specifically, because the types of the CAN devices of different vehicles are different and the specific specification parameters are also different, when the CAN specification parameters corresponding to the current vehicle are obtained in the step, the CAN type identifier of the current vehicle CAN be obtained first, and the CAN specification corresponding to the CAN type identifier is retrieved based on the CAN type identifier; the required CAN specification parameters are then extracted from the CAN specification.
It should be noted that the CAN specification parameters include a preset number of recessive bits, a standard frame bit number, and a mode conversion bit number corresponding to the head-up display converting from the stop mode to the reset mode.
And 102, determining the waiting time in the mode conversion process of the head-up display based on the CAN standard parameters and a preset time determination algorithm.
In this step, the preset time determination algorithm includes a digit determination sub-algorithm and a time conversion sub-algorithm corresponding to the longest conversion time.
Specifically, the step may input the CAN specification parameter to the digit determination sub-algorithm to obtain a digit corresponding to the longest conversion time output by the digit determination sub-algorithm; then inputting the digit corresponding to the longest conversion time into a time conversion sub-algorithm, and acquiring the transmission time required by the transmission of the digit corresponding to the longest conversion time output by the time conversion sub-algorithm; and finally, determining the transmission time as the waiting time in the mode conversion process of the head-up display.
Wherein, the bit number determination sub-algorithm is as follows: the number of bits corresponding to the longest transition time = the preset number of recessive bits + the standard frame number of bits + the number of mode transition bits + (preset number of recessive bits-1).
In a specific example, the preset number of recessive bits is 11, the number of standard frame bits is 110, and the number of mode conversion bits corresponding to the conversion of the head-up display from the stop mode to the reset mode is 4. Then the bit number is 11+110+10+4=135.
In addition, the CAN specification parameters comprise CAN bus baud rate; the time conversion sub-algorithm is as follows: transmission time = bits (1/baud rate).
In a specific example, the CAN bus baud rate is 500K, 1/500=0.002 milliseconds =2us is required to transmit one bit, and then 135 bits is 270us.
And 103, sending the waiting time to a mode conversion control module of the head-up display, so that the mode conversion control module controls the mode of the head-up display to be converted into a target mode under the condition that the mode conversion control module monitors that a preset number of recessive bits specified by the CAN standard parameters appear in the bus in the waiting time.
It should be noted that the purpose of this step is to change the waiting time according to the mode conversion control module to the waiting time determined in step 102 of this embodiment, and other control programs of the mode conversion control module are not changed.
In addition, in order to further avoid unsuccessful mode conversion of the head-up display, a mechanism for repeated execution may be set, and specifically, a function return value corresponding to the mode conversion may be obtained first, and the transmission time may be repeatedly sent to the mode conversion control module of the head-up display under the condition that the function return value is a first preset value, so that the mode conversion control module repeatedly controls the head-up display to perform the mode conversion.
The function corresponding to the function return value is cantcontrollermode (), the function is a common function in mode conversion in the prior art, and the embodiment only uses the function return value to determine whether mode conversion is successful.
Then accumulating the times of transmitting the transmission time, and prompting the failure of mode conversion when the times reach a preset threshold value; and stopping transmission of the transmission time under the condition that the function return value is a second preset value.
It should be noted that, for the mode conversion control module, a mechanism for executing mode conversion every time the waiting time is received needs to be set, and the mechanism can be implemented by using program codes, and since program codes executed repeatedly are frequently used, it is not described here again.
In the embodiment, the CAN standard parameters corresponding to the current vehicle are obtained by monitoring the message sending state in the bus and under the condition that the message sending state is monitored to be the message which is being sent; then determining the waiting time in the mode conversion process of the head-up display based on the CAN standard parameters and a preset time determination algorithm; and sending the waiting time to a mode conversion control module of the head-up display so that the mode conversion control module controls the mode of the head-up display to be converted into a target mode under the condition that the mode conversion control module monitors that a preset number of recessive bits specified by CAN standard parameters appear in the bus in the waiting time. Based on the method, more accurate waiting time is obtained by using the CAN standard parameters, so that the mode conversion control module controls the mode of the head-up display to be converted into the target mode under the condition that the preset number of recessive bits specified by the CAN standard parameters appear in the bus in the waiting time, and the problem that the mode conversion of the head-up display is unsuccessful due to the adoption of fixed waiting time is avoided.
Example two
Referring to fig. 3, fig. 3 is a schematic structural diagram of a mode conversion device of a head-up display according to a second embodiment of the present application. The mode conversion device of the head-up display provided by the embodiment of the application can execute the mode conversion method of the head-up display provided by any embodiment of the application, and has corresponding functional modules and beneficial effects of the execution method. The device can be implemented by software and/or hardware, and as shown in fig. 3, the mode conversion device for the head-up display specifically includes: a monitoring and acquiring module 301, a waiting time determining module 302 and a sending module 303.
The monitoring and acquiring module is used for monitoring the message sending state in the bus and acquiring the CAN standard parameters corresponding to the current vehicle under the condition that the message sending state is monitored to be the message which is being sent;
the waiting time determining module is used for determining waiting time in the mode conversion process of the head-up display based on CAN standard parameters and a preset time determining algorithm;
and the sending module is used for sending the waiting time to the mode conversion control module of the head-up display so as to control the mode conversion control module to convert the mode of the head-up display into a target mode under the condition that the mode conversion control module monitors that a preset number of recessive bits specified by the CAN standard parameters appear in the bus in the waiting time.
In the embodiment, the CAN standard parameters corresponding to the current vehicle are obtained by monitoring the message sending state in the bus and under the condition that the message sending state is monitored to be the message which is being sent; then determining the waiting time in the mode conversion process of the head-up display based on the CAN standard parameters and a preset time determination algorithm; and then sending the waiting time to a mode conversion control module of the head-up display, so that the mode conversion control module controls the mode of the head-up display to be converted into a target mode under the condition that the mode conversion control module monitors that a preset number of recessive bits specified by CAN standard parameters appear in the bus in the waiting time. Based on this, the more accurate waiting time is obtained by using the CAN standard parameters, so that the mode conversion control module controls the mode of the head-up display to be converted into the target mode when monitoring that the preset number of recessive bits specified by the CAN standard parameters appear in the bus in the waiting time, and the problem that the mode conversion of the head-up display is unsuccessful due to the adoption of fixed waiting time is avoided.
Further, the CAN specification parameters include a preset number of recessive bits, a standard frame bit number, and a mode conversion bit number corresponding to the head-up display converting from the stop mode to the reset mode.
Further, the preset time determining algorithm comprises a digit determining sub-algorithm and a time conversion sub-algorithm corresponding to the longest conversion time;
the latency determination module includes:
the first determining unit is used for inputting the CAN standard parameters into the digit determining sub-algorithm and acquiring the digit corresponding to the longest conversion time output by the digit determining sub-algorithm;
the second determining unit is used for inputting the digit corresponding to the longest conversion time into the time conversion sub-algorithm and acquiring the transmission time required by the digit corresponding to the longest conversion time output by the time conversion sub-algorithm;
and a third determining unit for determining the transmission time as a waiting time in the mode conversion process of the head-up display.
Further, the bit number determination sub-algorithm is as follows:
the bit number corresponding to the longest conversion time = the preset number of recessive bits + the standard frame bit number + the mode conversion bit number + (preset number of recessive bits-1).
Further, the CAN specification parameters comprise CAN bus baud rate;
the time conversion sub-algorithm is as follows: transmission time = bits (1/baud rate).
Further, the apparatus further comprises:
a return value acquisition module for acquiring a function return value corresponding to the mode conversion, and repeatedly sending transmission time to a mode conversion control module of the head-up display under the condition that the function return value is a first preset value, so that the mode conversion control module repeatedly controls the head-up display to perform the mode conversion;
the accumulation module is used for accumulating the times of transmitting the transmission time and prompting the failure of mode conversion when the times reach a preset threshold value;
and the sending stopping module is used for stopping sending the transmission time under the condition that the function return value is a second preset value.
Further, the monitoring and acquisition module includes:
the acquiring unit is used for acquiring the CAN type identifier of the current vehicle and retrieving the CAN standard corresponding to the CAN type identifier based on the CAN type identifier;
and the extraction unit is used for extracting the required CAN standard parameters from the CAN standard.
EXAMPLE III
Fig. 4 is a schematic structural diagram of an electronic device according to a third embodiment of the present application, as shown in fig. 4, the electronic device includes a processor 410, a memory 420, an input device 430, and an output device 440; the number of the processors 410 in the electronic device may be one or more, and one processor 410 is taken as an example in fig. 4; the processor 410, the memory 420, the input device 430 and the output device 440 in the electronic apparatus may be connected by a bus or other means, and the connection by the bus is exemplified in fig. 4.
The memory 420 serves as a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the head-up display mode conversion method in the embodiment of the present application (for example, the monitoring and acquiring module 301, the waiting time determining module 302, and the sending module 303 in the head-up display mode conversion apparatus). The processor 410 executes various functional applications and data processing of the electronic device by executing software programs, instructions and modules stored in the memory 420, that is, implements the above-described head-up display mode conversion method.
Namely, monitoring the message sending state in the bus, and acquiring the CAN standard parameter corresponding to the current vehicle under the condition that the message sending state is monitored to be the message which is being sent;
determining waiting time in the mode conversion process of the head-up display based on CAN standard parameters and a preset time determination algorithm;
and sending the waiting time to a mode conversion control module of the head-up display, so that the mode conversion control module controls the mode of the head-up display to be converted into a target mode under the condition that the mode conversion control module monitors that a preset number of recessive bits specified by CAN standard parameters appear in the bus in the waiting time.
According to the technical scheme of the embodiment of the application, the CAN standard parameters corresponding to the current vehicle are obtained by monitoring the message sending state in the bus and under the condition that the message sending state is monitored to be the message which is being sent; then determining the waiting time in the mode conversion process of the head-up display based on the CAN standard parameters and a preset time determination algorithm; and sending the waiting time to a mode conversion control module of the head-up display so that the mode conversion control module controls the mode of the head-up display to be converted into a target mode under the condition that the mode conversion control module monitors that a preset number of recessive bits specified by CAN standard parameters appear in the bus in the waiting time. Based on this, the more accurate waiting time is obtained by using the CAN standard parameters, so that the mode conversion control module controls the mode of the head-up display to be converted into the target mode when monitoring that the preset number of recessive bits specified by the CAN standard parameters appear in the bus in the waiting time, and the problem that the mode conversion of the head-up display is unsuccessful due to the adoption of fixed waiting time is avoided.
Further, the CAN specification parameters include a preset number of recessive bits, a standard frame bit number, and a mode conversion bit number corresponding to the head-up display converting from the stop mode to the reset mode.
Further, the preset time determination algorithm comprises a digit determination sub-algorithm and a time conversion sub-algorithm corresponding to the longest conversion time;
determining the waiting time in the mode conversion process of the head-up display based on CAN standard parameters and a preset time determination algorithm, wherein the waiting time comprises the following steps:
inputting the CAN standard parameter into a digit determining sub-algorithm, and acquiring a digit corresponding to the longest conversion time output by the digit determining sub-algorithm;
inputting the digit corresponding to the longest conversion time into a time conversion sub-algorithm, and acquiring the transmission time required by the transmission of the digit corresponding to the longest conversion time output by the time conversion sub-algorithm;
the transmission time is determined as a waiting time during the mode switching of the head-up display.
Further, the bit number determination sub-algorithm is as follows:
the bit number corresponding to the longest conversion time = the preset number of recessive bits + the standard frame bit number + the mode conversion bit number + (preset number of recessive bits-1).
Further, the CAN specification parameters comprise CAN bus baud rate;
the time conversion sub-algorithm is as follows: transmission time = bits (1/baud rate).
Further, the method further comprises:
acquiring a function return value corresponding to the mode conversion, and repeatedly sending transmission time to a mode conversion control module of the head-up display under the condition that the function return value is a first preset value so that the mode conversion control module repeatedly controls the head-up display to perform the mode conversion;
accumulating the transmission time times, and prompting that the mode conversion fails when the times reach a preset threshold value;
and stopping the transmission of the transmission time under the condition that the function return value is a second preset value.
Further, acquiring a CAN specification parameter corresponding to the current vehicle, including:
acquiring a CAN type identifier of a current vehicle, and retrieving a CAN standard corresponding to the CAN type identifier based on the CAN type identifier;
the required CAN specification parameters are extracted from the CAN specification.
The memory 420 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 420 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 420 can further include memory located remotely from the processor 410, which can be connected to electronic devices through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 430 may be used to receive an input of a power construction drawing and generate key signal inputs related to user settings and function control of the electronic equipment. The output device 440 may include a display device such as a display screen.
Example four
A fourth embodiment of the present application further provides a storage medium containing computer-executable instructions, which when executed by a computer processor, perform a method for mode conversion of a heads-up display, the method including:
monitoring a message sending state in a bus, and acquiring CAN standard parameters corresponding to a current vehicle under the condition that the message sending state is monitored to be that a message which is being sent exists;
determining waiting time in the mode conversion process of the head-up display based on CAN standard parameters and a preset time determination algorithm;
and sending the waiting time to a mode conversion control module of the head-up display, so that the mode conversion control module controls the mode of the head-up display to be converted into a target mode under the condition that the mode conversion control module monitors that a preset number of recessive bits specified by CAN standard parameters appear in the bus in the waiting time.
According to the technical scheme of the embodiment of the application, the CAN standard parameters corresponding to the current vehicle are obtained by monitoring the message sending state in the bus and under the condition that the message sending state is monitored to be the message which is being sent; then determining the waiting time in the mode conversion process of the head-up display based on the CAN standard parameters and a preset time determination algorithm; and then sending the waiting time to a mode conversion control module of the head-up display, so that the mode conversion control module controls the mode of the head-up display to be converted into a target mode under the condition that the mode conversion control module monitors that a preset number of recessive bits specified by CAN standard parameters appear in the bus in the waiting time. Based on this, the more accurate waiting time is obtained by using the CAN standard parameters, so that the mode conversion control module controls the mode of the head-up display to be converted into the target mode when monitoring that the preset number of recessive bits specified by the CAN standard parameters appear in the bus in the waiting time, and the problem that the mode conversion of the head-up display is unsuccessful due to the adoption of fixed waiting time is avoided.
Further, the CAN specification parameters include a preset number of recessive bits, a standard frame bit number, and a mode conversion bit number corresponding to the conversion of the head-up display from the stop mode to the reset mode.
Further, the preset time determination algorithm comprises a digit determination sub-algorithm and a time conversion sub-algorithm corresponding to the longest conversion time;
determining the waiting time in the mode conversion process of the head-up display based on CAN standard parameters and a preset time determination algorithm, wherein the method comprises the following steps:
inputting the CAN standard parameters into a digit determination sub-algorithm to obtain digits corresponding to the longest conversion time output by the digit determination sub-algorithm;
inputting the digit corresponding to the longest conversion time into a time conversion sub-algorithm, and acquiring the transmission time required by the digit corresponding to the longest conversion time output by the time conversion sub-algorithm;
the transmission time is determined as a waiting time during the mode switching of the head-up display.
Further, the bit number determination sub-algorithm is as follows:
the number of bits corresponding to the longest transition time = the preset number of recessive bits + the standard frame number of bits + the number of mode transition bits + (preset number of recessive bits-1).
Further, the CAN specification parameters comprise CAN bus baud rate;
the time conversion sub-algorithm is as follows: transmission time = bits (1/baud rate).
Further, the method further comprises:
acquiring a function return value corresponding to the mode conversion, and repeatedly sending transmission time to a mode conversion control module of the head-up display under the condition that the function return value is a first preset value, so that the mode conversion control module repeatedly controls the head-up display to carry out the mode conversion;
accumulating the transmission time times, and prompting that the mode conversion fails when the times reach a preset threshold value;
and stopping the transmission of the transmission time under the condition that the function return value is a second preset value.
Further, acquiring a CAN specification parameter corresponding to the current vehicle, including:
acquiring a CAN type identifier of a current vehicle, and retrieving a CAN standard corresponding to the CAN type identifier based on the CAN type identifier;
the required CAN specification parameters are extracted from the CAN specification.
Of course, the storage medium provided in the embodiments of the present application contains computer-executable instructions, and the computer-executable instructions are not limited to the above method operations, and may also perform related operations in the method for converting the mode of the head-up display provided in any embodiment of the present application.
From the above description of the embodiments, it is obvious for those skilled in the art that the present application can be implemented by software and necessary general hardware, and certainly can be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present application or portions contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods of the embodiments of the present application.
It should be noted that, in the embodiment of the above search apparatus, each included unit and module are merely divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only used for distinguishing one functional unit from another, and are not used for limiting the protection scope of the present application.
It is to be noted that the foregoing is only illustrative of the presently preferred embodiments and application of the principles of the present invention. It will be understood by those skilled in the art that the present application is not limited to the particular embodiments illustrated herein, and that various obvious changes, rearrangements and substitutions may be made therein by those skilled in the art without departing from the scope of the application. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the appended claims.
Claims (10)
1. A method for mode conversion of a head-up display, the method comprising:
monitoring a message sending state in a bus, and acquiring CAN (controller area network) standard parameters corresponding to a current vehicle under the condition that the message sending state is monitored to be the existence of a message being sent;
determining waiting time in the mode conversion process of the head-up display based on the CAN standard parameters and a preset time determination algorithm;
and sending the waiting time to a mode conversion control module of the head-up display, so that the mode conversion control module controls the mode of the head-up display to be converted into a target mode under the condition that the mode conversion control module monitors that a preset number of recessive bits specified by the CAN standard parameters appear in the bus in the waiting time.
2. The method of claim 1, wherein the CAN specification parameters comprise a preset number of recessive bits, a number of standard frame bits, and a number of mode transition bits corresponding to a transition of the heads-up display from a stop mode to a reset mode.
3. The method according to claim 2, wherein the predetermined time determination algorithm comprises a bit number determination sub-algorithm and a time conversion sub-algorithm corresponding to the longest conversion time;
the determining of the waiting time in the mode conversion process of the head-up display based on the CAN standard parameters and the preset time determination algorithm comprises the following steps:
inputting the CAN standard parameter into the digit determining sub-algorithm, and acquiring the digit corresponding to the longest conversion time output by the digit determining sub-algorithm;
inputting the digit corresponding to the longest conversion time into the time conversion sub-algorithm, and acquiring the transmission time output by the time conversion sub-algorithm and required for transmitting the digit corresponding to the longest conversion time;
and determining the transmission time as the waiting time in the process of switching the mode of the head-up display.
4. The method of claim 3, wherein the bit number determination sub-algorithm is:
the bit number corresponding to the longest conversion time = the preset number of recessive bits + the standard frame bit number + the mode conversion bit number + (preset number of recessive bits-1).
5. The method of claim 3 wherein the CAN specification parameters include a CAN bus baud rate;
the time conversion sub-algorithm is as follows: transmission time = bits (1/baud rate).
6. The method of claim 1, further comprising:
acquiring a function return value corresponding to mode conversion, and repeatedly sending the transmission time to a mode conversion control module of the head-up display under the condition that the function return value is a first preset value, so that the mode conversion control module repeatedly controls the head-up display to perform mode conversion;
accumulating the transmission time times, and prompting that the mode conversion fails when the times reach a preset threshold value;
and stopping the transmission of the transmission time under the condition that the function return value is a second preset value.
7. The method of claim 1, wherein the obtaining of the CAN specification parameters corresponding to the current vehicle comprises:
acquiring a CAN type identifier of a current vehicle, and retrieving a CAN standard corresponding to the CAN type identifier based on the CAN type identifier;
and extracting required CAN specification parameters from the CAN specification.
8. A mode conversion apparatus of a head-up display, the apparatus comprising:
the monitoring and acquiring module is used for monitoring the message sending state in the bus and acquiring the CAN standard parameters corresponding to the current vehicle under the condition that the message sending state is monitored to be the message which is being sent;
the waiting time determining module is used for determining the waiting time in the mode conversion process of the head-up display based on the CAN standard parameters and a preset time determining algorithm;
and the sending module is used for sending the waiting time to a mode conversion control module of the head-up display so as to control the mode conversion control module to convert the mode of the head-up display into a target mode under the condition that the mode conversion control module monitors that a preset number of recessive bits specified by the CAN specification parameters appear in the bus in the waiting time.
9. An electronic device, characterized in that the electronic device comprises:
one or more processors;
a storage device to store one or more programs,
when executed by the one or more processors, cause the one or more processors to implement the heads-up display mode transition method of any of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of mode conversion for a heads-up display according to any one of claims 1 to 7.
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