Instrument total mileage backup method and device

Abstract

The invention belongs to the technical field of vehicle data, and provides an instrument total mileage backup method and device, and the method comprises the steps: a vehicle body controller backs up the total mileage sent by an instrument; when the vehicle power supply is switched from OFF to ON and the VI N code is written into the new instrument, the vehicle body controller sends the mileage total backup and the VI N code of the vehicle body controller to the new instrument; the new instrument compares whether the vehicle body controller VI N code is consistent with the new instrument VI N code or not, and if yes, whether the total mileage backup value is larger than the current total mileage value of the new instrument or not is judged; if the total mileage backup value is greater than the current total mileage count value of the new instrument, updating the total mileage count value of the new instrument as the total mileage backup value; according to the method, by comparing the VI N code of the vehicle body controller with the VI N code of the new instrument, it can be ensured that when the new instrument is replaced, the total mileage backup received from the vehicle body controller belongs to the corresponding vehicle, and mileage information inconsistency caused by data errors or tampering can be prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle data, and in particular relates to a method and a device for backing up the total mileage of an instrument. Background Art

[0002] The current car instrument panel can display a variety of driving information according to customer needs, including date, time, mileage subtotal, average fuel consumption, etc. This information is usually memorized and continuously displayed when the battery is powered on. However, if the battery is powered off, this information may be cleared or restored to the initial value, although key information such as total mileage is usually not lost due to power failure.

[0003] However, in actual sales, when the instrument is replaced due to various after-sales reasons, the new instrument may judge the total mileage as 0, causing users to find that the driving information data has changed. This situation is not only not conducive to vehicle safety, but also affects the reputation of the after-sales market. Summary of the invention

[0004] In view of the problems in the background technology, the present invention proposes a total mileage backup method and device for an instrument to solve the problem in the prior art that the total mileage is 0 after replacing a new instrument.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A total mileage backup method for an instrument, the method comprising:

[0007] The meter sends the mileage total to the body controller so that the body controller backs up the mileage total;

[0008] When the vehicle power is switched from OFF to ON and the new meter is written with the VI N code, the new meter receives the mileage total backup and the VI N code sent by the body controller;

[0009] The new meter compares the body controller VI N code to see if it is consistent with the new meter VI N code. If they are consistent, it determines whether the mileage total backup value is greater than the current mileage total value of the new meter;

[0010] If the mileage total backup value is greater than the current mileage total value of the new meter, the mileage total value of the new meter is updated to the mileage total backup value.

[0011] Furthermore, before the meter sends the mileage total to the vehicle body controller, the method further includes:

[0012] The instrument sends a mileage total backup enable signal to the body controller to activate the backup function of the body controller.

[0013] Furthermore, if the number of times the meter mileage is reset is zero, or the current mileage value reaches the maximum reset mileage set for the meter, the meter sends a mileage total backup activation signal to the body controller.

[0014] Furthermore, the vehicle body controller backs up the mileage total, including:

[0015] The body controller receives the instrument VI N code sent by the instrument;

[0016] When the vehicle power is switched from ON to OFF, the body controller compares the body controller VI N code with the instrument VI N code to see if it is consistent;

[0017] If they are consistent, determining whether the backup function of the vehicle body controller is activated, and whether the total mileage minus the preset mileage is greater than or equal to the current total mileage backup value;

[0018] If both are yes, the body controller backs up the mileage total.

[0019] Furthermore, if the body controller VI N code is inconsistent with the new meter VI N code, the new meter does not update the mileage total.

[0020] Furthermore, if the mileage total backup value sent by the vehicle body controller or the vehicle body controller VIN code received by the new meter is an invalid value, the new meter does not update the mileage total.

[0021] Furthermore, if the mileage total backup value is less than or equal to the current mileage total value of the new meter, the new meter does not update the mileage total.

[0022] Further, if the mileage total value of the new meter is updated to the mileage total backup value, the new meter does not compare the VIN code and the mileage total in real time.

[0023] Further, the initial mileage value of the body controller is 0, or the method further includes: when KL15 is powered on, the instrument determines whether the body controller VI N code is consistent with the instrument VI N code, and if not, prompts a message.

[0024] In a second aspect, the present invention provides an instrument total mileage backup device, comprising:

[0025] A sending module, used for the instrument to send the mileage total to the body controller, so that the body controller backs up the mileage total;

[0026] The receiving module is used for receiving the mileage total backup and the body controller VI N code from the new meter when the vehicle power is turned from OFF to ON and the new meter is written with the VI N code;

[0027] The judging module compares the body controller VI N code with the new meter to see if it is consistent with the new meter VI N code. If they are consistent, it judges whether the mileage total backup value is greater than the current mileage total value of the new meter;

[0028] The updating module updates the mileage total value of the new meter to the mileage total backup value if the mileage total backup value is greater than the current mileage total value of the new meter.

[0029] Beneficial effects of the present invention:

[0030] 1. The method of the present invention can ensure that the mileage total backup received from the body controller belongs to the corresponding vehicle by comparing the body controller VI N code with the new instrument VI N code, and can prevent the mileage information from being inconsistent due to data errors or tampering, thereby avoiding the situation where the data is incorrectly applied to other vehicles and ensuring the accuracy of the data.

[0031] 2. The method of the present invention can ensure that the mileage data is up to date before the vehicle is turned off by backing up the mileage total when the vehicle power is switched from ON to OFF, thereby ensuring that the mileage data will not be lost and that the mileage data is still accurate after the instrument is replaced.

[0032] 3. The method of the present invention can ensure that the backup function is activated only under specific conditions (such as the number of mileage resets is exhausted or the maximum reset mileage is reached) by judging whether the backup function of the body controller is activated, thereby preventing unnecessary data storage and processing, and can also ensure that the body controller is working normally, avoiding data loss or damage caused by inactivation of the body controller.

[0033] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 The process of the instrument total mileage backup method of the present invention is shown Figure 1 ;

[0036] Figure 2The process of the instrument total mileage backup method of the present invention is shown Figure 2 ;

[0037] Figure 3 The device framework diagram of the present invention is shown;

[0038] Figure 4 A schematic diagram of the device structure of the present invention is shown. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Refer to the instruction manual Figure 1 and attached Figure 2 As shown, the present invention proposes a total mileage backup method for an instrument, which specifically includes the following steps:

[0041] S1. The instrument (ICM) sends the mileage total to the body controller (BDM), so that the body controller backs up the mileage total;

[0042] When the vehicle's network is awakened, the instrument sends a periodic mileage total signal to the body controller, which can ensure that the body controller can obtain the latest mileage data so that the body controller can back up the mileage total.

[0043] The body controller directly performs the backup operation of the mileage total, or backs up the mileage total through its built-in functional module.

[0044] The total mileage refers to the total mileage of the vehicle.

[0045] S2. When the vehicle power is switched from OFF to ON and the new meter is written with the VIN code, the body controller sends the mileage total backup and the body controller VIN code to the new meter;

[0046] Specifically, when the vehicle power is turned from OFF to ON and a new meter is replaced, the VIN code is written into the new meter by operating the diagnostic instrument.

[0047] The body controller sends the mileage total backup and the body controller VIN code to the new meter, so that the new meter can verify its identity through the VIN code and obtain the latest mileage total backup value for mileage recovery in the next step.

[0048] S3, the new meter determines whether the body controller VIN code is consistent with the new meter VIN code, and if so, determines whether the mileage total backup value is greater than the current mileage total value of the new meter;

[0049] The VIN code (Vehicle Identification Number) is a unique identifier for a vehicle. By comparing the VIN code, it can be ensured that the mileage total backup received from the body controller belongs to the corresponding vehicle, which can prevent mileage information inconsistency caused by data errors or tampering.

[0050] S4. If the mileage total backup value is greater than the current mileage total value of the new meter, updating the mileage total value of the new meter to the mileage total backup value;

[0051] By updating the total mileage value of the new meter to the total mileage backup value, it can be ensured that after the vehicle replaces the meter, the new meter displays the latest and most accurate mileage, thereby avoiding inconsistency or loss of mileage information and avoiding users' doubts about the mileage data.

[0052] In some embodiments, before the step S1, in which the meter sends the mileage total to the vehicle body controller, the following steps are also included:

[0053] S10, the instrument sends a mileage total backup activation signal to the body controller to activate the backup function of the body controller;

[0054] Activate the backup function of the body controller, that is, the instrument informs the body controller that the mileage backup can be performed, so that the body controller can receive the mileage total sent by the instrument in step S1, and then back up the mileage total.

[0055] Specifically, the instrument sends a mileage total backup activation signal to the body controller, which also includes: if the instrument mileage reset times is zero, or the current mileage value reaches the maximum reset mileage set by the instrument, the instrument sends a mileage total backup activation signal to the body controller.

[0056] Before the mileage backup is performed on the body controller, the default initial mileage value is 0.

[0057] Exemplarily, if the instrument mileage is reset times to zero, or the current mileage value reaches the maximum reset mileage set for the instrument, the instrument sets the mileage total backup signal to "1", that is, the mileage total backup enable signal, and sends the mileage total backup enable signal to the body controller.

[0058] In some embodiments, in step S2, the vehicle body controller backs up the mileage total, and further includes the following steps:

[0059] The body controller receives the instrument VI N code sent by the instrument;

[0060] When the vehicle power switches from ON to OFF, the body controller compares the body controller VI N code to see if it is consistent with the instrument VI N code. If they are consistent, it determines whether the backup function of the body controller is activated, and whether the total mileage minus the preset mileage (for example, 100KM) is greater than or equal to the current total mileage backup value. If both are yes, the body controller backs up the total mileage.

[0061] By comparing the VIN code, we can ensure that it is the data of the same vehicle.

[0062] By backing up the mileage total when the vehicle power goes from ON to OFF, it can be ensured that the mileage data is up to date before the vehicle is turned off, ensuring that the mileage data will not be lost and that the mileage data will remain accurate after the instrument is replaced.

[0063] By determining whether the backup function of the body controller is activated, it can be ensured that the backup function is activated only under specific conditions (such as the number of mileage resets is exhausted or the maximum reset mileage is reached), thereby preventing unnecessary data storage and processing, and also ensuring that the body controller is working normally, avoiding data loss or damage caused by inactivation of the body controller.

[0064] In some embodiments, in step S4, if the body controller VI N code is inconsistent with the new instrument VI N code, the new instrument is not updated according to the mileage total backup value, and the new instrument prompts a warning message that cannot be exited "VI N code is incorrect!".

[0065] If the VI N code does not match, the new meter will not update the mileage, thus preventing problems caused by incorrect installation.

[0066] In some embodiments, in step S4, if the body controller VIN code or the mileage total backup value received by the new meter is an invalid value, the new meter is not updated according to the mileage total backup value.

[0067] In some embodiments, in step S5, if the mileage total backup value is less than or equal to the current mileage total value of the new meter, the current mileage total value of the new meter is not updated.

[0068] In some embodiments, if the new meter has updated the mileage total value to the mileage total backup value, the new meter does not compare the VIN code and the mileage total in real time, which can reduce the frequency of network communication and reduce the network load.

[0069] By comparing the body controller VI N code with the new instrument VI N code, it can ensure that the mileage total backup received from the body controller belongs to the corresponding vehicle, prevent mileage information inconsistency due to data errors or tampering, thereby avoiding the data from being mistakenly applied to other vehicles and ensuring the accuracy of the data.

[0070] In some embodiments, the method further includes: when KL15 is powered on, the instrument determines whether the body controller VI N code is consistent with the instrument VI N code. If not, a warning message "VI N code is incorrect!" that cannot be exited is prompted; if consistent, no operation is performed.

[0071] By performing a consistency check of the VIN code after KL15 is powered on, the data consistency between the instrument and the body controller can be ensured. Only when the VIN codes are consistent will the system continue the normal operation process, thus preventing data errors caused by VIN code mismatch.

[0072] Refer to the instruction manual Figure 3 As shown, based on the same inventive concept, the present invention also proposes an instrument total mileage backup device, comprising:

[0073] A sending module 110, used for the meter to send the mileage total to the body controller, so that the body controller backs up the mileage total;

[0074] The receiving module 120 is used for receiving the mileage total backup and the body controller VI N code from the new meter when the vehicle power is turned from OFF to ON and the new meter is written with the VI N code;

[0075] The judging module 130 compares the body controller VI N code of the new meter to see whether it is consistent with the VI N code of the new meter. If they are consistent, it is judged whether the mileage total backup value is greater than the current mileage total value of the new meter.

[0076] The updating module 140 updates the mileage total value of the new meter to the mileage total backup value if the mileage total backup value is greater than the current mileage total value of the new meter.

[0077] Refer to the instruction manual Figure 4 As shown, based on the same inventive concept, the present invention also proposes a device, including a memory and a processor, wherein the memory stores computer instructions that can be executed on the processor, and the processor executes the above-mentioned instrument total mileage backup method when running the computer instructions.

[0078] Based on the same inventive concept, the present invention also proposes a computer-readable storage medium on which computer instructions are stored. When the computer instructions are executed, the above-mentioned instrument total mileage backup method can be implemented.

[0079] Among them, any reference to memory, storage, database or other media used in the embodiments provided by the present invention may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory.

[0080] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0081] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A total mileage backup method for an instrument, characterized in that: The method comprises: The meter sends the mileage total to the body controller so that the body controller backs up the mileage total; When the vehicle power is turned from OFF to ON and the new meter is written with the VIN code, the new meter receives the mileage total backup and the VIN code of the body controller sent by the body controller; The new meter compares the body controller VIN code to see if it is consistent with the new meter VIN code. If they are consistent, it determines whether the mileage total backup value is greater than the current mileage total value of the new meter; If the mileage total backup value is greater than the current mileage total value of the new meter, the mileage total value of the new meter is updated to the mileage total backup value.

2. The instrument total mileage backup method according to claim 1, characterized in that: Before the meter sends the mileage total to the vehicle body controller, the method further includes: The instrument sends a mileage total backup enable signal to the body controller to activate the backup function of the body controller.

3. The instrument total mileage backup method according to claim 2, characterized in that: If the instrument mileage reset times is zero, or the current mileage value reaches the maximum reset mileage set for the instrument, the instrument sends a mileage total backup activation signal to the body controller.

4. The instrument total mileage backup method according to claim 1, characterized in that: The vehicle body controller backs up the mileage total, including: The body controller receives the instrument VIN code sent by the instrument; When the vehicle power is switched from ON to OFF, the body controller compares the body controller VIN code with the instrument VIN code to see if it is consistent; If they are consistent, determining whether the backup function of the vehicle body controller is activated, and whether the total mileage minus the preset mileage is greater than or equal to the current total mileage backup value; If both are yes, the body controller backs up the mileage total.

5. The instrument total mileage backup method according to claim 1, characterized in that: If the body controller VIN code is inconsistent with the new meter VIN code, the new meter will not update the mileage total.

6. The instrument total mileage backup method according to claim 1, characterized in that: If the mileage total backup value sent by the body controller or the body controller VIN code received by the new meter is an invalid value, the new meter will not update the mileage total.

7. The instrument total mileage backup method according to claim 1, characterized in that: If the mileage total backup value is less than or equal to the current mileage total value of the new meter, the new meter does not update the mileage total.

8. The instrument total mileage backup method according to claim 1, characterized in that: If the mileage total value of the new meter is updated to the mileage total backup value, the new meter does not compare the VIN code and the mileage total in real time.

9. The instrument total mileage backup method according to claim 1, characterized in that: The initial mileage value of the vehicle body controller is 0, or the method further includes: When KL15 is powered on, the instrument panel determines whether the VIN code of the body controller is consistent with the VIN code of the instrument panel. If they are inconsistent, a prompt message is displayed.

10. A total mileage backup device for an instrument, characterized in that: include: A sending module, used for the instrument to send the mileage total to the body controller, so that the body controller backs up the mileage total; The receiving module is used for receiving the mileage total backup and the VIN code of the body controller sent by the new meter when the vehicle power is turned from OFF to ON and the new meter is written with the VIN code; The judging module compares the new meter with the body controller VIN code to see whether it is consistent with the new meter VIN code. If they are consistent, it judges whether the mileage total backup value is greater than the current mileage total value of the new meter. The updating module updates the mileage total value of the new meter to the mileage total backup value if the mileage total backup value is greater than the current mileage total value of the new meter.

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