Combination instrument vehicle speed correction method and device based on vehicle-mounted terminal

Abstract

The invention relates to a combination instrument vehicle speed correction method and device based on a vehicle-mounted terminal. The combination instrument vehicle speed correction method based on the vehicle-mounted terminal comprises the following steps: acquiring a GPS monitoring vehicle speed and a combination instrument vehicle speed of the vehicle-mounted terminal; if the difference value between the vehicle speed monitored by the GPS and the vehicle speed of the combination instrument of the vehicle-mounted terminal exceeds a preset threshold value, the PPK value in the combination instrument is corrected; and determining the combined instrument vehicle speed through the corrected PPK value. Whether the vehicle speed of the combination instrument of the vehicle-mounted terminal is correctly displayed or not is judged according to the difference value between the vehicle speed monitored by the GPS and the vehicle speed of the combination instrument of the vehicle-mounted terminal, if the difference value between the vehicle speed monitored by the GPS and the vehicle speed of the combination instrument of the vehicle-mounted terminal exceeds the preset threshold value, it is indicated that the vehicle speed of the combination instrument is incorrectly displayed, and at the moment, the PPK value in the combination instrument can be corrected; through the corrected PPK value, the vehicle speed of the combination instrument is determined, so that the vehicle speed display accuracy of the combination instrument is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle manufacturing, and in particular to a vehicle speed correction method for a combination meter based on a vehicle terminal, a vehicle speed correction device for a combination meter based on a vehicle terminal, a storage medium and an electronic device. Background Art

[0002] The vehicle instrument speed refers to the speed displayed on the vehicle dashboard. This speed is usually measured and calculated by the vehicle's sensors and control system, and displayed on the dashboard for the driver's reference. Normally, the vehicle instrument speed must be consistent with the actual speed within a reasonable range to accurately display the speed. Summary of the invention

[0003] In view of this, the embodiments of the present disclosure are intended to provide a vehicle speed correction method for a combination instrument based on a vehicle terminal, a vehicle speed correction device for a combination instrument based on a vehicle terminal, a storage medium, and an electronic device.

[0004] The technical solution of the present disclosure is achieved as follows:

[0005] In a first aspect, the present disclosure provides a vehicle speed correction method for a combination instrument based on a vehicle terminal.

[0006] The vehicle speed correction method of the combination instrument based on the vehicle terminal provided by the embodiment of the present disclosure includes:

[0007] Obtain vehicle speed monitored by GPS and vehicle terminal’s combined instrument speed;

[0008] If the difference between the vehicle speed monitored by the GPS and the vehicle speed of the combination meter of the vehicle terminal exceeds a predetermined threshold, the PPK value in the combination meter is corrected;

[0009] The vehicle speed of the instrument cluster is determined by the corrected PPK value.

[0010] In some embodiments, the correcting of the PPK value in the instrument cluster includes:

[0011] Determining a target PPK value based on the vehicle speed monitored by the GPS;

[0012] Based on the target PPK value, the PPK value in the combination meter is corrected to obtain a corrected PPK value.

[0013] In some embodiments, the determining a target PPK value based on the vehicle speed monitored by the GPS includes:

[0014] The target PPK value is determined based on the output shaft speed, the GPS monitored vehicle speed, and a correlation relationship model between the output shaft speed, the GPS monitored vehicle speed, and the target PPK value.

[0015] In some embodiments, the correlation relationship model between the output shaft speed, the GPS monitored vehicle speed and the target PPK value includes:

[0016] Wherein, V is the vehicle speed monitored by the GPS; Rpm is the output shaft speed; and ppk is the target PPK value.

[0017] In a second aspect, the present disclosure provides a vehicle speed correction device for a combination meter based on a vehicle terminal, comprising:

[0018] The vehicle speed acquisition module is used to obtain the vehicle speed monitored by GPS and the combined instrument speed of the vehicle terminal;

[0019] A PPK value correction module, used to correct the PPK value in the combination meter if the difference between the vehicle speed monitored by the GPS and the vehicle speed of the combination meter of the vehicle terminal exceeds a predetermined threshold;

[0020] The vehicle speed correction module is used to determine the vehicle speed of the instrument cluster through the corrected PPK value.

[0021] In some embodiments, the PPK value correction module is used to

[0022] Determining a target PPK value based on the vehicle speed monitored by the GPS;

[0023] Based on the target PPK value, the PPK value in the combination meter is corrected to obtain a corrected PPK value.

[0024] In some embodiments, the PPK value correction module is used to

[0025] The target PPK value is determined based on the output shaft speed, the GPS monitored vehicle speed, and a correlation relationship model between the output shaft speed, the GPS monitored vehicle speed, and the target PPK value.

[0026] In some embodiments, the correlation relationship model between the output shaft speed, the GPS monitored vehicle speed and the target PPK value includes:

[0027] Wherein, V is the vehicle speed monitored by the GPS; Rpm is the output shaft speed; and ppk is the target PPK value.

[0028] In a third aspect, the present disclosure provides a computer-readable storage medium on which a combination instrument vehicle speed correction program based on a vehicle-mounted terminal is stored. When the combination instrument vehicle speed correction program based on the vehicle-mounted terminal is executed by a processor, the combination instrument vehicle speed correction method based on the vehicle-mounted terminal described in the first aspect above is implemented.

[0029] In a fourth aspect, the present disclosure provides an electronic device, comprising a memory, a processor, and a combination instrument vehicle speed correction program based on a vehicle terminal stored in the memory and executable on the processor, wherein when the processor executes the combination instrument vehicle speed correction program based on the vehicle terminal, the combination instrument vehicle speed correction method based on the vehicle terminal described in the first aspect above is implemented.

[0030] According to the embodiment of the present disclosure, the combination meter vehicle speed correction method based on the vehicle-mounted terminal includes: obtaining the vehicle speed monitored by GPS and the vehicle speed of the combination meter of the vehicle-mounted terminal; if the difference between the vehicle speed monitored by GPS and the vehicle speed of the combination meter of the vehicle-mounted terminal exceeds a predetermined threshold, the PPK value in the combination meter is corrected; and the vehicle speed of the combination meter is determined by the corrected PPK value. In the present application, whether the vehicle speed of the combination meter of the vehicle-mounted terminal is displayed correctly is judged by the difference between the vehicle speed monitored by GPS and the vehicle speed of the combination meter of the vehicle-mounted terminal. If the difference between the vehicle speed monitored by GPS and the vehicle speed of the combination meter of the vehicle-mounted terminal exceeds a predetermined threshold, it means that the vehicle speed of the combination meter is displayed incorrectly. At this time, the PPK value in the combination meter can be corrected, and the vehicle speed of the combination meter is determined by the corrected PPK value, which is conducive to improving the accuracy of the vehicle speed display of the combination meter.

[0031] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a flow chart of a vehicle speed correction method of a combination instrument based on a vehicle terminal according to an exemplary embodiment;

[0033] Figure 2 The figure is a schematic diagram of the structure of a vehicle speed correction device for a combination instrument based on a vehicle terminal according to an exemplary embodiment. DETAILED DESCRIPTION

[0034] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0035] The vehicle instrument speed refers to the speed displayed on the vehicle dashboard. This speed is usually measured and calculated by the vehicle's sensors and control system, and displayed on the dashboard for the driver's reference. Normally, the vehicle instrument speed must be consistent with the actual speed within a reasonable range to accurately display the speed.

[0036] In view of the above situation, the present disclosure provides a vehicle speed correction method for a combination instrument based on a vehicle terminal. Figure 1 FIG. 1 is a flow chart of a vehicle speed correction method for a combination instrument based on a vehicle terminal according to an exemplary embodiment. Figure 1 As shown, the vehicle speed correction method of the combined instrument based on the vehicle terminal includes:

[0037] Obtain vehicle speed monitored by GPS and vehicle terminal’s combined instrument speed;

[0038] If the difference between the vehicle speed monitored by the GPS and the vehicle speed of the combination meter of the vehicle terminal exceeds a predetermined threshold, the PPK value in the combination meter is corrected;

[0039] The vehicle speed of the instrument cluster is determined by the corrected PPK value.

[0040] In this exemplary embodiment, when a vehicle is loaded with cargo of different weights, errors may occur in monitoring the radius of the vehicle tires, thereby causing errors in measuring the vehicle speed of the vehicle combination instrument. In this regard, the vehicle speed monitored by GPS can be compared with the vehicle speed of the combination instrument of the vehicle terminal, and whether the vehicle combination instrument speed is accurate can be determined based on the difference between the vehicle speed monitored by GPS and the vehicle speed of the combination instrument of the vehicle terminal. If the difference between the vehicle speed monitored by GPS and the vehicle speed of the combination instrument of the vehicle terminal exceeds a predetermined threshold, it can be determined that the vehicle combination instrument speed of the vehicle terminal is inaccurate, and the PPK value in the combination instrument can be corrected. Then, the vehicle speed of the combination instrument is determined by the corrected PPK value, so that the vehicle speed of the combination instrument is more accurate, thereby improving the accuracy of the vehicle speed display of the combination instrument.

[0041] In some embodiments, the correcting of the PPK value in the instrument cluster includes:

[0042] Determining a target PPK value based on the vehicle speed monitored by the GPS;

[0043] Based on the target PPK value, the PPK value in the combination meter is corrected to obtain a corrected PPK value.

[0044] In this exemplary embodiment, since the vehicle speed monitored by GPS is relatively accurate, a target PPK value can be determined based on the vehicle speed monitored by GPS. Based on the target PPK value, the PPK value in the instrument cluster is corrected to obtain a corrected PPK value, thereby obtaining a more reasonable PPK value, thereby improving the accuracy of the vehicle speed display of the instrument cluster.

[0045] In some embodiments, the determining a target PPK value based on the vehicle speed monitored by the GPS includes:

[0046] The target PPK value is determined based on the output shaft speed, the GPS monitored vehicle speed, and a correlation relationship model between the output shaft speed, the GPS monitored vehicle speed, and the target PPK value.

[0047] In this exemplary embodiment, the correlation relationship model between the output shaft speed, the GPS monitored vehicle speed and the target PPK value includes:

[0048] Wherein, V is the vehicle speed monitored by the GPS; Rpm is the output shaft speed; and ppk is the target PPK value.

[0049] In this exemplary embodiment, the output shaft speed Rpm is a known quantity. The vehicle speed monitored by GPS is an accurate vehicle speed, so the vehicle speed monitored by GPS can be used as a reference to determine the target PPK value by using the vehicle speed monitored by GPS. Then, the PPK value in the instrument cluster is corrected by using the target PPK value to obtain a corrected PPK value, so that the vehicle speed in the instrument cluster is calculated based on the corrected PPK value to display the vehicle speed meter, thereby improving the accuracy of the vehicle speed display in the instrument cluster.

[0050] In this exemplary embodiment, when performing a speed correction display on the instrument cluster, the on-board terminal can set error values ​​within different speed ranges. Among them, the on-board terminal obtains the current actual speed of the vehicle from the GPS satellite, that is, the GPS monitors the speed. At the same time, it receives the speed of the instrument cluster sent by the first ID of the CAN bus: 0x0CFE6C17. The two speeds are compared. If the error exceeds the error setting value within this speed range, the on-board terminal recalculates the speed PPK value of the instrument cluster, and the on-board terminal sends the calculated PPK value to the instrument cluster via the second ID of the CAN bus: 0x18FFDFEE. The instrument cluster receives the new speed PPK value and stores it, and then uses the newly stored speed PPK value to calculate the displayed speed of the instrument. Among them, the CAN bus node in this application is mainly composed of an instrument cluster and a vehicle terminal.

[0051] The present invention provides a vehicle speed correction device for a combination meter based on a vehicle-mounted terminal. Figure 2 FIG. 1 is a schematic diagram of a vehicle speed correction device for a combined instrument based on a vehicle terminal according to an exemplary embodiment. Figure 2 As shown, the vehicle speed correction device of the combined instrument based on the vehicle terminal includes:

[0052] The vehicle speed acquisition module 20 is used to acquire the vehicle speed monitored by GPS and the vehicle speed of the combined instrument of the vehicle terminal;

[0053] A PPK value correction module 21, used to correct the PPK value in the combination meter if the difference between the vehicle speed monitored by the GPS and the vehicle speed of the combination meter of the vehicle terminal exceeds a predetermined threshold;

[0054] The vehicle speed correction module 22 is used to determine the vehicle speed of the combination instrument through the corrected PPK value.

[0055] In this exemplary embodiment, when a vehicle is loaded with cargo of different weights, errors may occur in monitoring the radius of the vehicle tires, thereby causing errors in measuring the vehicle speed of the vehicle combination instrument. In this regard, the vehicle speed monitored by GPS can be compared with the vehicle speed of the combination instrument of the vehicle terminal, and whether the vehicle combination instrument speed is accurate can be determined based on the difference between the vehicle speed monitored by GPS and the vehicle speed of the combination instrument of the vehicle terminal. If the difference between the vehicle speed monitored by GPS and the vehicle speed of the combination instrument of the vehicle terminal exceeds a predetermined threshold, it can be determined that the vehicle combination instrument speed of the vehicle terminal is inaccurate, and the PPK value in the combination instrument can be corrected. Then, the vehicle speed of the combination instrument is determined by the corrected PPK value, so that the vehicle speed of the combination instrument is more accurate, thereby improving the accuracy of the vehicle speed display of the combination instrument.

[0056] In some embodiments, the PPK value correction module is used to

[0057] Determining a target PPK value based on the vehicle speed monitored by the GPS;

[0058] Based on the target PPK value, the PPK value in the combination meter is corrected to obtain a corrected PPK value.

[0059] In this exemplary embodiment, since the vehicle speed monitored by GPS is relatively accurate, a target PPK value can be determined based on the vehicle speed monitored by GPS. Based on the target PPK value, the PPK value in the instrument cluster is corrected to obtain a corrected PPK value, thereby obtaining a more reasonable PPK value, thereby improving the accuracy of the vehicle speed display of the instrument cluster.

[0060] In some embodiments, the PPK value correction module is used to

[0061] The target PPK value is determined based on the output shaft speed, the GPS monitored vehicle speed, and a correlation relationship model between the output shaft speed, the GPS monitored vehicle speed, and the target PPK value.

[0062] In this exemplary embodiment, the correlation relationship model between the output shaft speed, the GPS monitored vehicle speed and the target PPK value includes:

[0063] Wherein, V is the vehicle speed monitored by the GPS; Rpm is the output shaft speed; and ppk is the target PPK value.

[0064] In this exemplary embodiment, the output shaft speed Rpm is a known quantity. The vehicle speed monitored by GPS is an accurate vehicle speed, so the vehicle speed monitored by GPS can be used as a reference to determine the target PPK value by using the vehicle speed monitored by GPS. Then, the PPK value in the instrument cluster is corrected by using the target PPK value to obtain a corrected PPK value, so that the vehicle speed in the instrument cluster is calculated based on the corrected PPK value to display the vehicle speed meter, thereby improving the accuracy of the vehicle speed display in the instrument cluster.

[0065] The present disclosure provides a computer-readable storage medium, on which a vehicle speed correction program for a combination instrument based on a vehicle terminal is stored. When the vehicle speed correction program for the combination instrument based on the vehicle terminal is executed by a processor, the vehicle speed correction method for the combination instrument based on the vehicle terminal described in the above embodiments is implemented.

[0066] The present disclosure provides an electronic device, including a memory, a processor, and a vehicle speed correction program for a combination instrument based on a vehicle terminal stored in the memory and executable on the processor. When the processor executes the vehicle speed correction program for the combination instrument based on the vehicle terminal, the vehicle speed correction method for the combination instrument based on the vehicle terminal described in the above-mentioned embodiments is implemented.

[0067] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or otherwise processing in a suitable manner if necessary, and then stored in a computer memory.

[0068] It should be understood that the various parts of the present disclosure can be implemented in hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0070] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0071] In addition, the terms "first", "second", etc. used in the embodiments of the present disclosure are only used for descriptive purposes and should not be understood as indicating or implying relative importance, or implicitly indicating the number of technical features indicated in the embodiments. Therefore, the features defined by the terms "first", "second", etc. in the embodiments of the present disclosure may explicitly or implicitly indicate that at least one of the features is included in the embodiment. In the description of the present disclosure, the word "multiple" means at least two or two or more, such as two, three, four, etc., unless otherwise clearly and specifically defined in the embodiments.

[0072] In the present disclosure, unless otherwise clearly specified or limited in the embodiments, the terms "installed", "connected", "connected" and "fixed" etc. appearing in the embodiments should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integrated connection. It can be understood that it can also be a mechanical connection, an electrical connection, etc.; of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements, or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific implementation situation.

[0073] In the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0074] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A vehicle speed correction method for a combination instrument based on a vehicle terminal, characterized in that: include: Obtain vehicle speed monitored by GPS and vehicle terminal’s combined instrument speed; If the difference between the vehicle speed monitored by the GPS and the vehicle speed of the combination meter of the vehicle terminal exceeds a predetermined threshold, the PPK value in the combination meter is corrected; The vehicle speed of the instrument cluster is determined by the corrected PPK value.

2. The vehicle speed correction method of the combination instrument based on the vehicle terminal according to claim 1 is characterized in that: The correcting of the PPK value in the instrument cluster includes: Determining a target PPK value based on the vehicle speed monitored by the GPS; Based on the target PPK value, the PPK value in the combination meter is corrected to obtain a corrected PPK value.

3. The vehicle speed correction method of the combination instrument based on the vehicle terminal according to claim 2 is characterized in that: The determining of the target PPK value based on the vehicle speed monitored by the GPS includes: The target PPK value is determined based on the output shaft speed, the GPS monitored vehicle speed, and a correlation relationship model between the output shaft speed, the GPS monitored vehicle speed, and the target PPK value.

4. The vehicle speed correction method of the combination meter based on the vehicle terminal according to claim 3 is characterized in that: The correlation relationship model between the output shaft speed, the GPS monitored vehicle speed and the target PPK value includes: Wherein, V is the vehicle speed monitored by the GPS; Rpm is the output shaft speed; and ppk is the target PPK value.

5. A vehicle speed correction device for a combination instrument based on a vehicle terminal, characterized in that: include: The vehicle speed acquisition module is used to obtain the vehicle speed monitored by GPS and the combined instrument speed of the vehicle terminal; A PPK value correction module, used to correct the PPK value in the combination meter if the difference between the vehicle speed monitored by the GPS and the vehicle speed of the combination meter of the vehicle terminal exceeds a predetermined threshold; The vehicle speed correction module is used to determine the vehicle speed of the instrument cluster through the corrected PPK value.

6. The vehicle speed correction device for a combination meter based on a vehicle terminal according to claim 5, characterized in that: The PPK value correction module is used to Determining a target PPK value based on the vehicle speed monitored by the GPS; Based on the target PPK value, the PPK value in the combination meter is corrected to obtain a corrected PPK value.

7. The vehicle speed correction device for a combined instrument based on a vehicle terminal according to claim 6, characterized in that: The PPK value correction module is used to The target PPK value is determined based on the output shaft speed, the GPS monitored vehicle speed, and a correlation relationship model between the output shaft speed, the GPS monitored vehicle speed, and the target PPK value.

8. The vehicle speed correction device for a combined instrument based on a vehicle terminal according to claim 7, characterized in that: The correlation relationship model between the output shaft speed, the GPS monitored vehicle speed and the target PPK value includes: Wherein, V is the vehicle speed monitored by the GPS; Rpm is the output shaft speed; and ppk is the target PPK value.

9. A computer-readable storage medium, characterized in that: A vehicle speed correction program for a combined instrument based on an on-board terminal is stored thereon, and when the vehicle speed correction program for a combined instrument based on an on-board terminal is executed by a processor, a vehicle speed correction method for a combined instrument based on an on-board terminal according to any one of claims 1-4 is implemented.

10. An electronic device, characterized in that: The invention comprises a memory, a processor and a vehicle speed correction program of a combination instrument based on a vehicle terminal which is stored in the memory and can be run on the processor. When the processor executes the vehicle speed correction program of the combination instrument based on the vehicle terminal, the vehicle speed correction method of the combination instrument based on the vehicle terminal according to any one of claims 1 to 4 is implemented.

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