CN114153650A - Safety verification method and system for intelligent cabin display function - Google Patents

Safety verification method and system for intelligent cabin display function Download PDF

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Publication number
CN114153650A
CN114153650A CN202111507953.3A CN202111507953A CN114153650A CN 114153650 A CN114153650 A CN 114153650A CN 202111507953 A CN202111507953 A CN 202111507953A CN 114153650 A CN114153650 A CN 114153650A
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China
Prior art keywords
fault
image display
display command
identifier
controller
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CN202111507953.3A
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Chinese (zh)
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张久扬
王觉峰
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Ecarx Hubei Tech Co Ltd
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Hubei Ecarx Technology Co Ltd
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Priority to CN202111507953.3A priority Critical patent/CN114153650A/en
Publication of CN114153650A publication Critical patent/CN114153650A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1004—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's to protect a block of data words, e.g. CRC or checksum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • 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
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus

Abstract

The invention provides a safety verification method and system for an intelligent cabin display function, and relates to the technical field of vehicle-mounted information. The safety verification method mainly comprises the following steps: the controller generates a fault sign image display command and an identifier corresponding to the fault sign image display command according to the fault sign signal, and sends the fault sign image display command and the identifier to the display control unit; the display control unit controls the display to display a corresponding fault sign image according to the fault sign image display command, generates an actual verification value of the displayed fault sign image, and sends the identifier and the actual verification value back to the controller; the controller judges whether the actual check value is the same as the reference check value of the fault sign image to be displayed by the fault sign image display command according to the received identifier; and if not, outputting prompt information for displaying the functional fault by the intelligent cabin. The invention utilizes the identifier corresponding to the fault sign image display command, thereby avoiding the problem of misjudgment during safety verification and improving the driving safety.

Description

Safety verification method and system for intelligent cabin display function
Technical Field
The invention relates to the technical field of vehicle-mounted information, in particular to a safety verification method and system for an intelligent cabin display function.
Background
In recent years, with the improvement of living standard and the rapid development of vehicle industry, the electronic and electric architecture of vehicles is more and more complex. In order to avoid accidents caused by errors of all electronic control units under the design of a complex electronic and electrical architecture, an intelligent cabin capable of respectively displaying various fault signs of all electronic control units which possibly make errors on a display in real time gradually becomes an important component of an intelligent vehicle. By using the intelligent cabin, the corresponding fault signs can be displayed through the display and the driver can be informed in time when each electronic control unit in the vehicle has errors, so that the driving safety is improved. Meanwhile, the current intelligent cockpit is also provided with a verification system for avoiding unnecessary maintenance cost caused by maintenance of corresponding parts due to display errors of fault signs, and after any fault sign image is displayed by the verification system, the controller verifies the correctness of the displayed fault lamp sign image by using an actual verification value and an expected correct reference image verification value of each frame of fault sign image generated by the display control unit.
However, in the current checking process of the intelligent cockpit, when the entire car triggers a plurality of fault sign lighting signals to the controller at the same time, the display control unit generates a plurality of image checking values, and then sends the image checking values back to the controller through the SPI, and meanwhile, since the display control unit calculates the image checking values through hardware calculation and cannot send the image checking values to the controller in sequence, the controller may randomly compare the plurality of image checking values with a local reference checking value, which causes a problem of erroneous judgment when the controller compares the received image checking values with the locally stored reference checking value, thereby causing problems of low driving safety and unnecessary high maintenance cost due to low checking accuracy.
Disclosure of Invention
In view of the above problems, the present invention provides a method and a system for checking the safety of an intelligent cockpit display function.
An object of the present invention is to provide a safety check method for an intelligent cockpit display function, so as to accurately perform safety check on the correctness of a displayed fault indication image, thereby avoiding unnecessary maintenance cost while ensuring driving safety.
A further object of the present invention is to utilize multiple fault type identifiers to ensure a one-to-one correspondence between the identifiers and the fault indication image display commands, thereby further ensuring the accuracy of the security check.
In particular, according to an aspect of the embodiments of the present invention, there is provided a safety verification method for an intelligent cabin display function, including:
the controller generates a fault sign image display command and an identifier corresponding to the fault sign image display command according to the fault sign signal, and sends the fault sign image display command and the identifier to the display control unit;
the display control unit controls the display to display a corresponding fault sign image according to the fault sign image display command, generates an actual check value of the displayed fault sign image, and sends the identifier and the actual check value to the controller;
the controller judges whether the actual check value is the same as the reference check value of the fault sign image to be displayed by the fault sign image display command according to the received identifier;
and if not, outputting prompt information for displaying the functional fault by the intelligent cabin.
Further, the identification includes fault sign type information indicating a fault type of the fault sign image display command and an ID value, and the ID values in the identification of each fault type are each cyclically accumulated within a preset range.
Further, after the controller generates the failure indication image display command and the identifier corresponding to the failure indication image display command according to the failure indication signal, the safety verification method further includes:
searching whether the identification which is the same as the newly generated identification is stored locally;
if yes, storing the newly generated identifier and the corresponding fault mark image display command to the local in a mode of covering the same stored identifier and the corresponding fault mark image display command;
if not, directly storing the newly generated identification and the corresponding fault mark image display command to the local.
Further, the controller stores a fault sign image display command and a reference check value of a fault sign image to be displayed by the fault sign image display command in a corresponding relation in advance; and is
The controller judges whether the actual check value is the same as the reference check value of the fault sign image to be displayed by the fault sign image display command according to the received identifier, and the method comprises the following steps:
searching for locally stored identification matched with the received identification, and locally acquiring a fault mark image display command stored in association with the matched identification;
acquiring a corresponding reference check value according to a fault sign image display command which is stored in a correlated manner;
and judging whether the actual check value is the same as the reference check value.
Further, before the controller generates the identifier corresponding to the failure sign image display command, the safety verification method further includes:
after generating a fault sign image display command, determining a fault type of the fault sign image display command as a target fault type;
judging whether the display command of the image of the fault mark is the same as the display command of the image of the previous fault mark of the target fault type;
the step of the controller generating an identification corresponding to the fault indication image display command includes:
if the fault sign image display command is the same as the previous fault sign image display command of the target fault type, reading the previous identifier of the target fault type as the identifier corresponding to the fault sign image display command, wherein the previous identifier refers to the identifier corresponding to the previous fault sign image display command of the target fault type;
and if the fault sign image display command is different from the previous fault sign image display command of the target fault type, the controller generates an identifier corresponding to the fault sign image display command in a mode of circularly accumulating the ID value in a preset range on the basis of the previous identifier.
Further, the step of the controller generating the identifier corresponding to the failure indication image display command on the basis of the previous identifier by cyclically accumulating the ID values within a preset range includes:
the controller reads the previous identifier and judges whether the ID value of the previous identifier reaches the upper limit of a preset range or not;
if so, setting the ID value in the identifier corresponding to the generated fault sign image display command as the lower limit of the preset range;
and if not, adding a preset step length to the ID value of the previous identifier to obtain the ID value in the identifier corresponding to the fault mark image display command.
According to another aspect of the embodiment of the present invention, there is also provided a safety verification system for an intelligent cockpit display function, including a controller, a display control unit and a display connected to each other; wherein
The controller is configured to generate a fault sign image display command and an identifier corresponding to the fault sign image display command according to the fault sign signal, and transmit the fault sign image display command and the identifier to the display control unit together;
the display control unit is configured to control the display to display a corresponding fault sign image according to the fault sign image display command, generate an actual verification value of the displayed fault sign image, and send the identifier and the actual verification value to the controller;
the controller is further configured to judge whether the actual check value is the same as a reference check value of a fault sign image to be displayed by the fault sign image display command according to the received identifier, and if not, outputting prompt information of displaying the functional fault of the intelligent cabin.
Further, the identification includes fault sign type information indicating a fault type of the fault sign image display command and an ID value, and the ID values in the identification of each fault type are each cyclically accumulated within a preset range.
Further, the controller is configured to search whether the same identifier as the newly generated identifier is stored locally after generating the fault identifier image display command and the identifier corresponding to the fault identifier image display command according to the fault identifier signal, if so, store the newly generated identifier and the corresponding fault identifier image display command locally in a manner of covering the stored same identifier and the corresponding fault identifier image display command, and if not, directly store the newly generated identifier and the corresponding fault identifier image display command locally.
Further, the controller stores a fault sign image display command and a reference check value of a fault sign image to be displayed by the fault sign image display command in a corresponding relation in advance; and is
The controller is further configured to search for locally stored identifiers matching the received identifiers, locally obtain a fault identifier image display command stored in association with the matched identifiers, obtain corresponding reference verification values according to the associated stored fault identifier image display command, and determine whether the actual verification values and the reference verification values are the same.
According to the safety verification method for the intelligent cockpit display function, the identifier corresponding to the fault mark image display command is generated when the fault mark image display command is generated according to the fault mark signal, and the corresponding relation between the identifier and the fault mark image display command is established. The display control unit controls the display to display the corresponding fault sign image according to the fault sign image display command by sending the fault sign image display command and the corresponding mark to the display control unit, simultaneously generating an actual verification value of the displayed fault sign image, and sending the identifier and the actual verification value back to the controller, and the controller can acquire the reference check value of the fault sign image to be displayed according to the corresponding fault sign image display command according to the identifier, and then judge whether the actual check value is the same as the reference check value, and by utilizing the corresponding relation between the identifier and the fault sign image display command and the corresponding relation between the fault sign image display command and the reference check value, the correctness of the displayed fault sign image can be accurately and safely checked, and only correct display function fault information is output. The driver acquires correct display function fault information, potential safety hazards and unnecessary maintenance cost caused by misjudgment are avoided, and therefore driving safety is improved while unnecessary maintenance cost is avoided.
Furthermore, the identifier of the invention comprises fault mark type information and an ID value which indicate the fault type of the fault mark image display command, and the ID value in each fault type identifier is circularly accumulated in a preset range, so that the identifiers corresponding to the fault mark image display commands of different fault types are independent and can not be shared, and the identifiers are sequentially generated aiming at the fault mark image display command of the same fault type, thereby further ensuring the one-to-one corresponding relation between the identifiers and the fault mark image display commands, and assisting the safety check process when the fault mark images of various fault types are displayed, and further improving the accuracy of the safety check.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a safety verification system for an intelligent cockpit display function according to an embodiment of the present invention;
figure 2 shows a flow diagram of a security verification method for an intelligent cockpit display function according to one embodiment of the present invention;
figure 3 shows a flow diagram of a security verification method for an intelligent cockpit display function according to one embodiment of the present invention;
fig. 4 is a schematic flow chart illustrating the cyclic accumulation of ID values within a preset range in the security verification method of the intelligent cockpit display function according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In order to solve the technical problem, an embodiment of the present invention provides a safety verification system for an intelligent cockpit display function. Fig. 1 shows a schematic structural diagram of a safety verification system 100 for intelligent cockpit display function according to an embodiment of the present invention. Referring to fig. 1, the security verification system 100 may include at least: a controller 200, a display control unit 300 and a display 400 connected.
The controller 200 is configured to generate a failure sign image display command and an identification corresponding to the failure sign image display command according to the failure sign signal, which records a transmission pointer of the failure sign image display command currently transmitted to the display control unit 300, and transmit the failure sign image display command and the identification to the display control unit 300. The display control unit 300 is configured to control the display 400 to display a corresponding fault indication image according to the received fault indication image display command, simultaneously generate an actual verification value of the displayed fault indication image, and transmit the identification and the actual verification value together to the controller 200, so that the controller 200 searches for the corresponding fault indication image display command using the received identification. The controller 200 is further configured to determine whether the actual verification value is the same as the reference verification value of the fault sign image pre-displayed by the fault sign image display command according to the received identifier, and if not, output prompt information of the intelligent cockpit display function fault to prompt an error in the fault sign image displayed on the display, so that unnecessary maintenance cost caused by maintenance of a user according to the mistakenly determined fault sign image on the corresponding error problem is avoided.
In some specific embodiments, the actual verification value is an image verification value that is calculated by the display control unit 300 from the failure indication image displayed on the display. For example, the display control unit 300 performs CRC check on each frame failure flag image, and obtains a corresponding CRC check value. The reference check value is an image check value that is locally pre-stored by the controller 200 and has a one-to-one correspondence relationship with the failure marker image to be displayed by the failure marker image display command. For example, the controller 200 performs CRC check on the fault flag image to be displayed according to each fault flag image display command in advance, calculates and generates a corresponding CRC check value, and stores the calculated and generated corresponding CRC check value and the fault flag image display command in a corresponding relationship in a local area. In this case, when the controller 200 receives the identifier and the actual check value sent back, the controller may first find the failure indication image display command corresponding to the identifier locally according to the identifier, then obtain the corresponding reference check value according to the corresponding failure indication image display command, and finally determine whether the actual check value is the same as the reference check value, thereby completing the check on the correctness of the displayed failure indication image.
In some specific embodiments, the Controller 200 in the security verification System 100 of the present invention may be a Micro Controller Unit (MCU), the display control Unit 300 may be a System On Chip (SOC), and the MCU and the SOC are connected through a Serial Peripheral Interface (SPI) and communicate according to an SPI protocol. In the safety check process, the micro control unit MCU sends the generated fault sign image display command and the corresponding identification to the system level chip SOC together through the SPI according to the SPI protocol, and the system level chip SOC sends the identification and the generated actual check value to the micro control unit MCU together through the SPI according to the SPI protocol. For example, the MCU will package the generated display command of the image of the fault flag and the corresponding identifier according to the SPI protocol and periodically transmit them to the SOC, which unpacks the display command of the image of the fault flag and the corresponding identifier first, then controls the display 400 to display the corresponding image of the fault flag according to the received display command of the image of the fault flag, and generates the actual verification value of the displayed image of the fault flag at the same time, and periodically transmit the identifier and the generated actual verification value back to the MCU according to the SPI protocol.
In some specific embodiments, the controller 200 is further configured to, after generating the failure flag image display command and the corresponding identifier, package the generated failure flag image display command and the corresponding identifier in a predetermined data frame format according to the SPI protocol, and periodically transmit the packaged failure flag image display command and the corresponding identifier to the display control unit 300 one by one in the form of a data packet. Further, the display control unit 300 is further configured to unpack the fault indication image display command and the corresponding identifier after receiving the fault indication image display command and the data packet of the corresponding identifier sent by the controller 200, generate an actual check value according to the fault indication image indicated by the fault indication image display command, package the identifier and the generated actual check value according to the SPI protocol in a predetermined data frame format, and send the packaged identifier and the actual check value to the controller 200 in the form of data packets one by one.
In some embodiments, as shown in fig. 1, the controller 200 in the security verification system 100 of the present invention is further connected to a vehicle bus 500. Under the design of the electronic and electric architecture of the whole vehicle, each electronic control unit can generate corresponding fault flag signals in real time and send the fault flag signals to the controller 200 through the whole vehicle bus 500. The controller 200 in the safety verification system 100 of the present invention is further configured to receive the fault flag signal sent by the entire vehicle bus 500 in real time after the start-up, and generate the fault flag image display command in real time according to the received fault flag signal. For example, when there is a failure affecting normal operation of a System in an anti-lock Brake System (ABS) in a vehicle, an ABS warning lamp lighting signal is generated, the controller 200 is configured to calculate and generate an ABS warning lamp lighting command PA ABS that indicates lighting of the ABS warning lamp On the basis of the received ABS warning lamp lighting signal, and when there is a failure in an Electric Power Steering (EPS) in the vehicle, an EPS warning lamp lighting signal is generated, and the controller 200 is configured to calculate and generate an EPS warning lamp lighting command PA EPS that indicates lighting of the EPS warning lamp On the basis of the received EPS warning lamp lighting signal.
In some embodiments, the identification in the security verification system 100 of the present invention includes fault flag type information indicating the type of fault of the fault flag image display command and an ID value. Still taking the example of an anti-lock brake system in a vehicle, the controller 200 is configured to generate a corresponding identification as ABS ID when generating a fault indication image display command with a fault type of the anti-lock brake system fault, wherein the ABS in the identification is the fault indication type information in the identification. It will be understood by those skilled in the art that the fault type of the fault flag signal and the fault type of the fault flag image display command generated from the fault flag signal are the same, and in this particular embodiment, the fault flag type information in the flag indicates the fault type of the fault flag image display command; in other specific embodiments, the type information of the fault flag in the identifier may also be determined directly according to the fault type in the fault flag signal, which is not limited in the present invention, as long as the identifiers corresponding to the fault flag image display commands of different fault types are independent from each other.
In this embodiment, the ID values in the identifiers of each fault type are respectively cyclically accumulated within a preset range, so as to sequentially generate the corresponding identifiers for the fault sign image display commands of each fault type. It should be noted that the preset range refers to a sequence range preset by the security verification system 100 according to the upper limit of the number of accumulated ID values in one cycle period, and in the preset range, each generated ID value does not exceed the upper limit of the sequence range and is not lower than the lower limit of the sequence range. In one embodiment, the ID value of the identifier is non-header data of the SPI payload data segment, and the length is 2Byte, so the predetermined range may be 0 × 00 to 0 × FF, and at this time, the ID values in the identifier of each fault type are cyclically accumulated within 0 × 00 to 0 × FF. For example, the identification ABS ID generated by the fault mark image display command with the fault type of the brake anti-lock system fault is circularly accumulated in 0 x 00-0 x FF, and the identification EPS ID generated by the fault mark image display command with the fault type of the electric power steering system fault is also circularly accumulated in 0 x 00-0 x FF, so that the corresponding identification can be independently and orderly generated by the fault mark image display command for each fault type.
In some embodiments, the controller 200 of the present invention is further configured to, after generating the failure indication image display command and the identification corresponding to the failure indication image display command according to the failure indication signal, find whether the same identification as the newly generated identification has been locally stored. If yes, the newly generated identifier and the corresponding fault mark image display command are stored locally in a mode of covering the same stored identifier and the corresponding fault mark image display command. If not, the newly generated identifier and the corresponding fault mark image display command are directly stored to the local, so as to ensure that the controller 200 locally stores at most one group of the identifier and the corresponding fault mark image display command for the same identifier within the working time of the controller 200. That is to say, when the controller 200 receives an identifier and an actual check value data packet sent back by the display control unit 300, the controller 200 can only locally find an identifier that is the same as the identifier according to the identifier, and correspondingly can only find a fault mark image display command corresponding to the same identifier, so that only an accurate reference check value can be obtained by using the correspondence between the fault mark image display command and the reference check value, and thus, the correct reference check value and the actual check value are compared, and the occurrence of erroneous judgment is avoided.
In addition, the controller 200 of the present invention may also be configured to employ a static memory RAM to store data. After the controller 200 generates the failure sign image display command and the identifier corresponding to the failure sign image display command according to the failure sign signal, the newly generated failure sign image display command and the identifier are directly stored in the static memory RAM, and if the identifier identical to the newly generated identifier is stored in the static memory RAM before, the identical identifier and the corresponding failure sign image display command directly disappear from the static memory RAM, so that when the controller 200 receives an identifier and an actual check value data packet sent back by the display control unit 300, the controller 200 can only find one failure sign image display command corresponding to the identifier in the static memory RAM according to the identifier.
In this embodiment, the controller 200 of the present invention is further configured to determine the fault type of the fault indicator image display command as the target fault type before generating the identifier corresponding to the fault indicator image display command after generating the fault indicator image display command, and then determine whether the fault indicator image display command is the same as the previous fault indicator image display command of the target fault type. On this basis, the controller 200 is further configured to read a previous identifier of the target fault type as an identifier corresponding to the fault indicator image display command if the fault indicator image display command is the same as a previous fault indicator image display command of the target fault type, the previous identifier indicating an identifier corresponding to the previous fault indicator image display command of the target fault type; if the fault sign image display command is different from the previous fault sign image display command of the target fault type, reading the previous identifier, judging whether the ID value of the previous identifier reaches the upper limit of the preset range, if so, setting the ID value in the identifier corresponding to the generated fault sign image display command as the lower limit of the preset range, and if not, adding the preset step length to the ID value of the previous identifier to obtain the ID value in the identifier corresponding to the fault sign image display command.
The safety verification system 100 of the invention accumulates and counts the identifiers corresponding to the fault mark image display commands of different fault types independently, and enables the identifiers corresponding to the fault mark image display commands of the same fault type to be circularly accumulated in a preset range when the fault mark image display commands of the same fault type are changed, thereby effectively ensuring the one-to-one corresponding relation between the identifiers and the fault mark images under the condition that the whole vehicle has multiple faults, and assisting the safety verification process when the fault mark images of multiple fault types are displayed, thereby further improving the accuracy of the safety verification.
In some embodiments, the controller 200 of the present invention stores the fault flag image display command and the reference check value of the fault flag image to be displayed by the fault flag image display command in a corresponding relationship in advance, and the controller 200 is further configured to search for a locally stored identifier matching the received identifier, obtain the fault flag image display command stored in association with the matched identifier from the local, obtain the corresponding reference check value according to the associated stored fault flag image display command, and determine whether the actual check value is the same as the reference check value. The invention realizes that when the controller 200 receives the actual verification value and the identification sent together, the accurate reference verification value can be found according to the identification, thereby comparing with the actual verification value and further ensuring the accuracy of the safety verification.
Based on the same inventive concept, the invention also provides a safety verification method of the intelligent cabin display function. Fig. 2 is a flow chart illustrating a safety verification method of an intelligent cockpit display function according to an embodiment of the present invention. Referring to fig. 2, the security verification method includes at least the following steps S202 to S208.
Step S202, the controller generates a fault sign image display command and an identifier corresponding to the fault sign image display command according to the fault sign signal, and sends the fault sign image display command and the identifier to the display control unit. Note that, a transmission pointer in which a failure flag image display command currently transmitted to the display control unit 300 is recorded is identified.
And step S204, the display control unit controls the display to display a corresponding fault sign image according to the fault sign image display command, generates an actual verification value of the displayed fault sign image, and sends the identifier and the actual verification value to the controller. It should be noted that the purpose of directly sending the identifier and the generated actual check value back to the controller without processing the identifier by the display control unit is to enable the controller 200 to first search for the corresponding fault flag image display command by using the received identifier, and then further search for the corresponding reference check value, thereby completing the check of the displayed fault flag image.
In step S206, the controller determines whether the actual verification value is the same as the reference verification value of the failure indication image to be displayed by the failure indication image display command according to the received identifier. If the actual verification value is different from the reference verification value of the failure indication image to be displayed by the failure indication image display command, step S208 is executed.
And step S208, outputting prompt information of the intelligent cabin display function fault.
Specifically, the actual verification value in step S204 is an image verification value that the display control unit generates by calculation from the failure sign image displayed on the display. For example, the display control unit performs CRC check on each frame failure flag image to obtain a corresponding CRC check value. The reference check value in step S206 is an image check value that is pre-stored locally by the controller and has a one-to-one correspondence relationship with the failure marker image to be displayed by the failure marker image display command. For example, the controller performs CRC check on the failure indication image to be displayed according to each failure indication image display command in advance, calculates and generates a corresponding CRC check value, and stores the calculated and generated corresponding CRC check value and the failure indication image display command in a corresponding relationship in a local area. In this case, when the controller receives the identifier and the actual check value sent back, the controller may first find the failure indication image display command corresponding to the identifier locally according to the identifier, then obtain the corresponding reference check value according to the corresponding failure indication image display command, and finally determine whether the actual check value is the same as the reference check value, thereby completing the check on the correctness of the displayed failure indication image.
The safety checking method of the intelligent cockpit display function of the invention is used, when a fault sign image display command is generated according to a fault sign signal, an identifier corresponding to the fault sign image display command is generated, the corresponding relation between the identifier and the fault sign image display command is established, then the fault sign image display command and the corresponding identifier are sent to the display control unit together, the display control unit controls the display to display the corresponding fault sign image according to the fault sign image display command, simultaneously, the actual checking value of the displayed fault sign image is generated, the identifier and the actual checking value are sent back to the controller together, the controller can obtain the reference checking value of the fault sign image to be displayed according to the corresponding fault sign image display command according to the identifier, and then, whether the actual checking value is the same as the reference checking value or not is judged, if the difference is not the same, prompt information of displaying functional faults of the intelligent cabin is output, and driving safety is guaranteed. The scheme of the invention utilizes the corresponding relation between the identifier and the display command of the fault mark image and the relation between the display command of the fault mark image and the reference check value, so that when the controller receives the actual check value and the identifier, the corresponding reference check value is accurately acquired according to the identifier, and then the correctness of the displayed fault mark image is safely checked, thereby ensuring that only correct display function fault information is output. The driver acquires correct display function fault information, potential safety hazards and unnecessary maintenance cost caused by misjudgment are avoided, and therefore driving safety is improved while unnecessary maintenance cost is avoided.
In some embodiments, the controller in step S202 may perform, according to the step of transmitting the failure sign image display command together with the identification to the display control unit: and packaging the fault sign image display command and the corresponding identification in a preset data frame format according to an SPI protocol, and periodically sending the packaged fault sign image display command and the corresponding identification to a display control unit in a data packet mode. Further, step S204 may be executed to unpack the display control unit to obtain the display command of the fault flag image and the corresponding identifier after receiving the data packet of the display command of the fault flag image and the corresponding identifier sent by the controller 200, control the display to display the corresponding fault flag image according to the display command of the fault flag image, generate an actual check value of the displayed fault flag image, package the identifier and the generated actual check value in a predetermined data frame format according to the SPI protocol, and send the packaged identifiers and the actual check values to the controller 200 one by one in the form of data packets.
In some embodiments, before step S202, the security verification method may further include: and the whole vehicle bus sends a fault mark signal to the controller in real time. The fault indication signal may be divided into fault indication signals of multiple fault types, such as an ABS warning light signal and an EPS warning light signal. Meanwhile, the fault sign signal of each fault type can be further divided into a plurality of fault sign signals with different display states. For example, when the ABS in the vehicle has a fault which influences the normal operation of the system, an ABS warning lamp lighting signal is generated; when the fault of an ABS (anti-lock brake system) in the vehicle is eliminated, an ABS warning lamp closing signal is generated, and when the fault of an EPS (electric power steering) system in the vehicle exists, an EPS warning lamp lighting signal is generated. Similarly, each electronic control unit in the whole vehicle respectively generates relevant fault mark signals according to different fault types and display states, and the fault mark signals are sent to the controller, and the controller receives the fault mark signals in real time.
In some embodiments, the identification in the security verification method of the present invention includes fault flag type information indicating a fault type of the fault flag image display command and an ID value. In some specific embodiments, for example, when the controller receives an ABS warning light lighting signal sent by an anti-lock braking system in the vehicle through the vehicle-integrated bus, the step S202 may be specifically performed as: the controller generates an ABS warning lamp lighting command and an identification ABS ID corresponding to the ABS warning lamp lighting command according to the ABS warning lamp lighting signal, and sends the ABS warning lamp lighting command and the identification ABS ID to the display control unit together. And the ABS in the marked ABS ID is fault mark type information which indicates that the fault type of the fault mark image display command is a brake anti-lock system fault. It will be understood by those skilled in the art that the type of fault of the fault flag signal and the type of fault of the fault flag image display command generated from the fault flag signal are the same, and in this embodiment, the fault flag type information in the flag indicates the type of fault of the fault flag image display command; in other specific embodiments, the type information of the fault flag in the identifier may also be determined directly according to the fault type in the fault flag signal, which is not limited in the present invention, as long as the identifiers corresponding to the fault flag image display commands of different fault types are independent from each other.
In this embodiment, the ID values in the identifiers of each fault type are respectively cyclically accumulated within a preset range, so as to sequentially generate the corresponding identifiers for the fault sign image display commands of each fault type. It should be noted that the preset range refers to a sequence range preset by the security verification system 100 according to the upper limit of the number of accumulated ID values, and in the preset range, each generated ID value does not exceed the upper limit of the sequence range and is not lower than the lower limit of the sequence range. In one embodiment, the ID value of the identifier is non-header data of the SPI payload data segment, and the length is 2Byte, so the predetermined range may be 0 × 00 to 0 × FF, and at this time, the ID values in the identifier of each fault type are cyclically accumulated within 0 × 00 to 0 × FF. For example, the identification ABS ID generated by the fault mark image display command with the fault type of the brake anti-lock braking system fault is circularly accumulated in 0 x 00-0 x FF, and the identification EPS ID generated by the fault mark image display command with the fault type of the electric power steering system fault is also circularly accumulated in 0 x 00-0 x FF, so that the corresponding identification can be sequentially generated by the fault mark image display command of each fault type.
By using the safety verification method, the identifiers corresponding to the fault mark image display commands of different fault types are mutually independently accumulated and counted by using the identifiers of multiple fault types, so that the identifiers corresponding to the fault mark image display commands of different fault types are mutually independent and cannot be shared. And the ID values in the identifiers of each fault type are circularly accumulated in a preset range, so that the identifiers are orderly generated according to the fault mark image display command of each fault type, the one-to-one corresponding relation between the identifiers and the fault mark images is effectively ensured under the condition that the whole vehicle has multiple faults, the safety verification process when the fault mark images of multiple fault types are displayed is assisted, and the accuracy of the safety verification is further improved.
In an optional embodiment of the present invention, after step S202, the security verification method of the present invention further includes: and searching whether the same identification as the newly generated identification is stored locally or not, if so, storing the newly generated identification and the corresponding fault identification image display command to the local in a manner of covering the stored same identification and the corresponding fault identification image display command, and if not, directly storing the newly generated identification and the corresponding fault identification image display command to the local so as to ensure that the controller locally stores at most one group of the identification and the corresponding fault identification image display command for the same identification within the working time of the controller. That is to say, when the controller receives an identifier and an actual check value data packet sent back by the display control unit, the controller can only locally find an identifier which is the same as the identifier according to the identifier, and can only find a fault identifier image display command corresponding to the same identifier, so that only an accurate reference check value can be obtained by using the corresponding relationship between the fault identifier image display command and the reference check value, and the correct reference check value and the actual check value are compared, thereby avoiding the occurrence of misjudgment.
In another alternative embodiment of the present invention, the controller in the security verification method of the present invention may further utilize a static memory RAM to store data. After the controller generates a fault sign image display command and an identifier corresponding to the fault sign image display command according to the fault sign signal, the newly generated fault sign image display command and the identifier are directly stored in the static memory RAM, if the same identifier as the newly generated identifier is stored in the static memory RAM before, the same identifier and the corresponding fault sign image display command directly disappear from the static memory RAM, so that in step S206, the controller can only find one fault sign image display command corresponding to the identifier in the static memory RAM according to the identifier, and the accuracy of safety check is also ensured.
On the basis of any one of the two aforementioned alternative embodiments, the controller locally stores at most one group of the identifier and the corresponding fault sign image display command for the same identifier, and simultaneously stores a plurality of groups of identifiers and fault sign image display commands in corresponding relationship.
In some specific embodiments, after the step of generating the failure indication image display command by the controller and before the step of generating the identifier corresponding to the failure indication image display command, the security verification method of the present invention further includes: and determining the fault type of the fault sign image display command as a target fault type, and judging whether the fault sign image display command is the same as the previous fault sign image display command of the target fault type. When the controller locally stores the fault sign image display command of the target fault type, the last fault sign image display command of the target fault type is read from all the locally stored fault sign image display commands of the target fault type, and the last fault sign image display command is stored in the controller.
In this embodiment, the step of the controller generating the identification corresponding to the trouble mark image display command may include: if the fault sign image display command is the same as the previous fault sign image display command of the target fault type, reading the previous identifier of the target fault type as the identifier corresponding to the fault sign image display command, wherein the previous identifier refers to the identifier corresponding to the previous fault sign image display command of the target fault type, and if the fault sign image display command is not the same as the previous fault sign image display command of the target fault type, the controller generates the identifier corresponding to the fault sign image display command by circularly accumulating the ID value in a preset range on the basis of the previous identifier. That is to say, the identifiers corresponding to the fault sign image display commands of different fault types are accumulated and counted independently, and only when the fault sign image display command changes, the identifier corresponding to the fault sign image display command is generated on the basis of the previous identifier in a mode of circularly accumulating the ID value within a preset range, so that a plurality of same fault sign image display commands generated continuously before and after are realized, a new ID value is not generated, and the calculation cost is reduced.
Further, the step of generating, by the controller in this embodiment, the identifier corresponding to the failure indication image display command by cyclically accumulating the ID values within the preset range on the basis of the previous identifier may include: reading the previous identifier, judging whether the ID value of the previous identifier reaches the upper limit of the preset range, if so, setting the ID value in the identifier corresponding to the generated fault mark image display command as the lower limit of the preset range, and if not, adding the preset step length to the ID value of the previous identifier to obtain the ID value in the identifier corresponding to the fault mark image display command, so that the corresponding identifiers are orderly generated aiming at the fault mark image display command of the changed target fault type, and the debugging test of the function and the investigation of later bugs in the subsequent working process are facilitated while the calculation cost is reduced.
The specific process of circularly accumulating the ID values within 0 x 00 to 0 x FF by using the identification ABS ID generated by the fault sign image display command aiming at the fault type of the fault of the anti-lock braking system is taken as an example, and the circularly accumulating mode of the ID values is explained in detail.
The controller generates a first PA ABS which is ON, and correspondingly generates ABS 0 x 00; the controller generates a second PA ABS ═ ON, reads ABS 0 × 00 as an identifier corresponding to the second PA ABS ═ ON; the controller generates a third PA ABS ═ ON, reads ABS 0 × 00 as an identifier corresponding to the third PA ABS ═ ON; the controller generates a first PA ABS ═ Off, and adds one to 0 × 00 to obtain an ID value in the identifier corresponding to the first PA ABS ═ Off, that is, ABS 0 × 01 is generated correspondingly; the controller generates a second PA ABS ═ Off, reads ABS 0 × 01 as an identifier corresponding to the second PA ABS ═ Off; the controller generates a fourth PA ABS ═ ON, adds one to 0 × 01 to obtain an ID value in the identifier corresponding to the fourth PA ABS ═ ON, correspondingly generates an ABS 0 × 02 … …, completes loop accumulation according to the rule, and sets the ID value in the identifier corresponding to the generated fault marker image display command to 0 × 00 to enter the next loop until the ID value of the current identifier reaches 0 × FF. The preset step length is 1, PA ABS ═ ON indicates an ABS warning lamp lighting command, and PA ABS ═ Off indicates an ABS warning lamp turning-Off command.
By using the safety verification method, the identification corresponding to the fault sign image display command of each fault type is circularly accumulated within the preset range when the fault sign image display command of the fault type changes, so that the one-to-one corresponding relation between the identification and the fault sign image is effectively ensured under the condition that the whole vehicle has multiple faults, the safety verification process when the fault sign images of multiple fault types are displayed is assisted, and the safety verification accuracy is further improved.
In some embodiments, the controller of the present invention stores the fault indication image display command and the reference verification value of the fault indication image to be displayed by the fault indication image display command in a corresponding relationship in advance. And step S206 may be performed as: the controller searches for a locally stored identifier matched with the received identifier, locally acquires a fault identifier image display command which is stored in association with the matched identifier, acquires a corresponding reference check value according to the fault identifier image display command which is stored in association, and judges whether the actual check value is the same as the reference check value.
By using the safety verification method, the corresponding relation between the fault sign image display command and the reference verification value of the fault sign image to be displayed by the fault sign image display command is established in advance, and the corresponding relation between the fault sign image display command and the identifier is established, so that when the controller receives the actual verification value and the identifier which are sent together, the accurate reference verification value can be found according to the identifier, and is compared with the actual verification value, and the accuracy of safety verification is further ensured.
In the above, various implementation manners of each step of the safety verification method for the intelligent cockpit display function according to the embodiment of the present invention are introduced, and an implementation process of the safety verification method for the intelligent cockpit display function according to the present invention is specifically described in an exemplary manner through a specific embodiment.
Fig. 3 is a flow chart illustrating a safety verification method of an intelligent cockpit display function according to an embodiment of the present invention. The flow steps of the present embodiment will be specifically described with reference to fig. 3.
And step S302, the whole vehicle bus sends a fault mark signal to the controller in real time. The fault flag signal may be classified into fault flag signals of various fault types, for example, an ABS warning light signal and an EPS warning light signal, etc. Meanwhile, the fault indication signal of each fault type may be further divided into a plurality of fault indication signals of different display states, for example, the ABS warning light signal includes an ABS warning light on signal and an ABS warning light off signal.
In step S304, the controller generates a failure indication image display command and an identifier corresponding to the failure indication image display command according to the failure indication signal. For example, the controller generates an ABS warning lamp lighting command PA ABS ═ On indicating that the ABS warning lamp is to be lit, by calculation, based On the received ABS warning lamp lighting signal, and generates an identification ABS ID corresponding to the ABS warning lamp lighting command PA ABS ═ On.
In step S306, the controller searches whether the identifier identical to the newly generated identifier is locally stored, and if the identifier identical to the newly generated identifier is locally stored, the controller proceeds to step S308, and if the identifier identical to the newly generated identifier is not locally stored, the controller proceeds to step S310.
In step S308, the controller stores the newly generated identifier and the corresponding failure indication image display command locally in a manner of covering the same identifier and the corresponding failure indication image display command that have already been stored, and then the process proceeds to step S312.
In step S310, the controller directly stores the newly generated identifier and the corresponding failure indication image display command to the local, and then proceeds to step S312. Through the steps S306-S310, the controller is ensured to store at most one identifier and the corresponding fault mark image display command locally for any identifier.
In step S312, the controller transmits the failure sign image display command to the display control unit together with the sign. Still take the case that the controller generates PA ABS ═ On and the ABS ID corresponding to PA ABS ═ On as an example, when executing this step, the controller sends the generated PA ABS ═ On and ABS ID together to the display control unit through the SPI interface according to the SPI protocol.
In step S314, the display control unit controls the display to display the corresponding failure indication image according to the failure indication image display command.
In step S316, the display control unit generates an actual verification value of the displayed failure flag image.
In step S318, the display control unit transmits the identification and the actual verification value to the controller. For example, the system on chip SOC sends the identification together with the generated actual check value back to the micro control unit MCU through the SPI interface according to the SPI protocol.
In step S320, the controller searches for a locally stored identifier matching the received identifier, and locally obtains a failure indication image display command stored in association with the matching identifier. Through steps S306-S310, in the step, the controller can only locally find one identifier matched with the identifier according to the received identifier, and can only find one corresponding fault mark image display command according to the matched identifier, so that the accuracy of safety verification is ensured.
Step S322, obtaining the corresponding reference check value according to the associated and stored fault sign image display command. In this embodiment, the controller stores the fault flag image display command and the reference verification value of the fault flag image to be displayed by the fault flag image display command in a corresponding relationship in advance. Therefore, the corresponding reference check value can be accurately found locally according to the associated and stored fault sign image display command.
In step S324, it is determined whether the actual check value is the same as the reference check value, and if the actual check value is different from the reference check value, the process proceeds to step S326.
Step S326, sending a first prompt message to the user, and ending the process.
Certainly, in the working process of the intelligent cabin, the whole vehicle bus sends a fault sign signal to the controller in real time, the controller also receives the fault sign signal sent by the whole vehicle bus in real time, and the steps S304 to S330 are continuously executed to perform safety check on the display function of the intelligent cabin in real time, so that the driving safety is ensured in real time.
In step S304, when the controller generates the failure indication image display command for each failure type according to the failure indication signal for the failure type for the first time, the ID value in the identifier corresponding to the generated failure indication image display command may be directly set as the lower limit of the preset range. After the fault sign image display command of each fault type is generated according to the fault sign signal of the fault type for the non-first time, the safety verification method further comprises the following steps: and determining the fault type of the fault sign image display command as a target fault type, and judging whether the fault sign image display command is the same as the previous fault sign image display command of the target fault type. On this basis, the step of the controller generating the flag corresponding to the failure sign image display command in step S304 may be performed as: if the fault sign image display command is the same as the previous fault sign image display command of the target fault type, reading the previous identifier of the target fault type as the identifier corresponding to the fault sign image display command, wherein the previous identifier refers to the identifier corresponding to the previous fault sign image display command of the target fault type; and if the fault sign image display command is different from the previous fault sign image display command of the target fault type, the controller generates an identifier corresponding to the fault sign image display command in a mode of circularly accumulating the ID value in a preset range on the basis of the previous identifier.
Fig. 4 is a schematic flow chart illustrating the cyclic accumulation of ID values within a preset range in the security verification method of the intelligent cockpit display function according to an embodiment of the present invention. The following describes, with reference to fig. 4, a specific step of the controller in this embodiment generating the identifier corresponding to the failure indication image display command based on the previous identifier by performing cyclic accumulation on the ID values within the preset range.
In step S1, the controller reads the previous identifier, determines whether the ID value of the previous identifier reaches the upper limit of the preset range, and if so, proceeds to step S2, and if not, proceeds to step S3. It should be noted that the previous identifier refers to an identifier corresponding to a previous fault indication image display command of the target fault type.
In step S2, the ID value in the flag corresponding to the generated trouble mark image display command is set to the lower limit of the preset range.
And step S3, adding a preset step to the ID value of the previous identifier to obtain the ID value in the identifier corresponding to the fault sign image display command.
When the method is used, when a fault sign image display command is generated according to a fault sign signal, a mark corresponding to the fault sign image display command is generated, the corresponding relation between the mark and the fault sign image display command is established, then the fault sign image display command and the corresponding mark are sent to a display control unit together, the display control unit controls a display to display a corresponding fault sign image according to the fault sign image display command, an actual verification value of the displayed fault sign image is generated at the same time, the mark and the actual verification value are sent back to the controller together, the controller can obtain a reference verification value of the fault sign image to be displayed according to the corresponding fault sign image display command according to the mark, then whether the actual verification value is the same as the reference verification value is judged, if the actual verification value is different from the reference verification value, prompt information of functional fault is displayed by an intelligent cockpit, the driving safety is ensured. The scheme of the invention utilizes the corresponding relation between the identifier and the display command of the fault mark image and the relation between the display command of the fault mark image and the reference check value, so that when the controller receives the actual check value and the identifier, the corresponding reference check value is accurately acquired according to the identifier, and then the correctness of the displayed fault mark image is safely checked, thereby ensuring that only correct display function fault information is output. The driver acquires correct display function fault information, potential safety hazards and unnecessary maintenance cost caused by misjudgment are avoided, and therefore driving safety is improved while unnecessary maintenance cost is avoided.
Furthermore, the safety verification method of the invention utilizes the identifiers of a plurality of fault types to make the identifiers corresponding to the fault mark image display commands of different fault types mutually independent and accumulated, thereby realizing that the identifiers corresponding to the fault mark image display commands of different fault types are mutually independent and can not be shared. And the ID values in the identifiers of each fault type are circularly accumulated in a preset range, so that the identifiers are orderly generated according to the fault mark image display command of each fault type, the one-to-one corresponding relation between the identifiers and the fault mark images is effectively ensured under the condition that the whole vehicle has multiple faults, the safety verification process when the fault mark images of multiple fault types are displayed is assisted, and the accuracy of the safety verification is further improved.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

1. A safety verification method for an intelligent cabin display function comprises the following steps:
the controller generates a fault sign image display command and an identifier corresponding to the fault sign image display command according to a fault sign signal, and sends the fault sign image display command and the identifier to a display control unit;
the display control unit controls a display to display a corresponding fault sign image according to the fault sign image display command, generates an actual verification value of the displayed fault sign image, and sends the identifier and the actual verification value to the controller;
the controller judges whether the actual check value is the same as the reference check value of the fault sign image to be displayed by the fault sign image display command according to the received identifier;
and if not, outputting prompt information for displaying the functional fault by the intelligent cabin.
2. The security verification method of claim 1, wherein the identification includes fault flag type information indicating a fault type of the fault flag image display command and an ID value, and the ID values in the identification of each fault type are each cyclically accumulated within a preset range.
3. The safety verification method of claim 2, wherein after the controller generates a fault flag image display command and an identifier corresponding to the fault flag image display command from a fault flag signal, the safety verification method further comprises:
searching whether the identification which is the same as the newly generated identification is stored locally;
if yes, storing the newly generated identifier and the corresponding fault mark image display command to the local in a mode of covering the same stored identifier and the corresponding fault mark image display command;
and if not, directly storing the newly generated identifier and the corresponding fault mark image display command to the local.
4. The security verification method according to claim 3, wherein the controller stores in advance in a corresponding relationship a failure indication image display command and a reference verification value of a failure indication image to be displayed by the failure indication image display command; and is
The controller judges whether the actual verification value is the same as the reference verification value of the fault sign image to be displayed by the fault sign image display command according to the received identifier, and the method comprises the following steps:
searching for locally stored identification matched with the received identification, and locally acquiring a fault mark image display command stored in association with the matched identification;
acquiring a corresponding reference check value according to the associated and stored fault sign image display command;
and judging whether the actual check value is the same as the reference check value.
5. The security check method of claim 3, wherein prior to the controller generating the identification corresponding to the fault signature image display command, the security check method further comprises:
after the fault sign image display command is generated, determining a fault type of the fault sign image display command as a target fault type;
judging whether the fault sign image display command is the same as the previous fault sign image display command of the target fault type;
the step of the controller generating an identification corresponding to the failure indication image display command includes:
if the fault sign image display command is the same as the previous fault sign image display command of the target fault type, reading the previous identifier of the target fault type as the identifier corresponding to the fault sign image display command, wherein the previous identifier refers to the identifier corresponding to the previous fault sign image display command of the target fault type;
and if the fault sign image display command is not the same as the previous fault sign image display command of the target fault type, the controller generates an identifier corresponding to the fault sign image display command in a mode of circularly accumulating the ID value in a preset range on the basis of the previous identifier.
6. The security verification method of claim 5, wherein the controller generates the identifier corresponding to the failure indication image display command on the basis of the previous identifier by cyclically accumulating the ID values within a preset range, including:
the controller reads the previous identifier and judges whether the ID value of the previous identifier reaches the upper limit of the preset range;
if so, setting the ID value in the identifier corresponding to the generated fault sign image display command as the lower limit of the preset range;
and if not, adding the preset step length to the ID value of the previous identifier to obtain the ID value in the identifier corresponding to the fault mark image display command.
7. A safety verification system with an intelligent cabin display function comprises a controller, a display control unit and a display which are connected with each other; wherein
The controller is configured to generate a fault sign image display command and an identifier corresponding to the fault sign image display command according to a fault sign signal, and transmit the fault sign image display command and the identifier to the display control unit together;
the display control unit is configured to control a display to display a corresponding fault sign image according to the fault sign image display command, generate an actual verification value of the displayed fault sign image, and send the identifier and the actual verification value to the controller;
the controller is further configured to judge whether the actual verification value is the same as a reference verification value of a fault sign image to be displayed by the fault sign image display command according to the received identifier, and if not, the controller outputs prompt information for displaying a functional fault on the intelligent cabin.
8. The security verification system of claim 7, wherein the identification includes fault flag type information indicating a fault type of the fault flag image display command and an ID value, and the ID values in the identification of each fault type are each cyclically accumulated within a preset range.
9. The security verification system of claim 8,
the controller is further configured to search whether a same identifier as a newly generated identifier is stored locally or not after generating a fault identifier image display command and an identifier corresponding to the fault identifier image display command according to a fault identifier signal, if so, store the newly generated identifier and the corresponding fault identifier image display command locally in a manner of covering the stored same identifier and the corresponding fault identifier image display command, and if not, directly store the newly generated identifier and the corresponding fault identifier image display command locally.
10. The security verification system according to claim 9, wherein the controller stores in advance in a corresponding relationship a failure indication image display command and a reference verification value of a failure indication image to be displayed by the failure indication image display command; and is
The controller is further configured to search for a locally stored identifier matching the received identifier, locally obtain a fault identifier image display command stored in association with the matched identifier, obtain a corresponding reference check value according to the fault identifier image display command stored in association, and determine whether the actual check value is the same as the reference check value.
CN202111507953.3A 2021-12-10 2021-12-10 Safety verification method and system for intelligent cabin display function Pending CN114153650A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114818009A (en) * 2022-05-12 2022-07-29 泽景(西安)汽车电子有限责任公司 Data processing method and device, head-up display and storage medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114818009A (en) * 2022-05-12 2022-07-29 泽景(西安)汽车电子有限责任公司 Data processing method and device, head-up display and storage medium
CN114818009B (en) * 2022-05-12 2023-03-10 泽景(西安)汽车电子有限责任公司 Data processing method and device, head-up display and storage medium

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