Method, device, equipment and storage medium for automatically obtaining engine vehicle speed signal

Abstract

The present application discloses a method, device, equipment and storage medium for automatically obtaining an engine vehicle speed signal. The method includes: obtaining a plurality of vehicle speed signals detected by a variety of vehicle instruments, and obtaining the relationship information between the overall vehicle gear ratio and the gear stored in the ECU; performing credibility verification and correction on the plurality of vehicle speed signals according to the relationship information between the overall vehicle gear ratio and the gear, and obtaining the corrected vehicle speed signals; outputting the corrected vehicle speed signals and the verification result information. According to the method for automatically obtaining an engine vehicle speed signal provided by the embodiments of the present application, the ECU can receive a variety of vehicle speed signals, and can perform credibility verification and correction on the variety of vehicle speed signals received by the ECU, so as to obtain more accurate and credible vehicle speed signals.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle control, and particularly relates to a method, device, equipment and storage medium for automatically obtaining an engine vehicle speed signal. Background Art

[0002] The vehicle speed signal is one of the very important signals in engine and vehicle control, and is usually used for cruise control, vehicle fuel consumption calculation, speed limit control when a fault occurs, maximum speed limit control, automatic transmission shift strategy control, and guiding the driver to shift gears or operate the accelerator. If the vehicle speed signal is inaccurate or suddenly lost, it will have a greater impact on the use of the above functions or directly cause the functions to be unavailable. Therefore, from a control perspective, it is particularly important to have a stable, highly credible, and accurate vehicle speed signal.

[0003] The engine control unit (ECU) generally obtains the vehicle speed signal by measuring with a vehicle speed sensor or parsing information sent from the vehicle instrument panel, body controller, vehicle braking system, automatic transmission controller, GPS, etc. Generally speaking, the sources of the vehicle speed signal are diverse. In the existing control strategies, the ECU can only rely on one signal source. When this signal source is incorrect or lost, the ECU cannot automatically switch to other vehicle speed sources for remedial measures, and can only passively receive the vehicle speed signals from the remaining controllers or sensors, and cannot perform credibility verification and correction calibration on them. Summary of the Invention

[0004] Embodiments of the present application provide a method, device, equipment and storage medium for automatically obtaining an engine vehicle speed signal. To provide a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary part is not a general review, nor is it intended to identify key / important constituent elements or delineate the protection scope of these embodiments. Its sole purpose is to present some concepts in a simple form as a preface to the subsequent detailed description.

[0005] In a first aspect, embodiments of the present application provide a method for automatically obtaining an engine vehicle speed signal, including:

[0006] Obtaining a plurality of vehicle speed signals detected by various vehicle instruments;

[0007] Obtaining the relationship information between the overall vehicle gear ratio and the gear stored in the ECU;

[0008] Performing credibility verification and correction on the plurality of vehicle speed signals according to the relationship information between the overall vehicle gear ratio and the gear, and obtaining a corrected vehicle speed signal;

[0009] Outputting the corrected vehicle speed signal and the verification result information.

[0010] In an alternative embodiment, the obtaining of multiple vehicle speed signals detected by multiple vehicle instruments includes:

[0011] Obtaining multiple vehicle speed signals detected by the vehicle's integrated instrument, body controller, vehicle braking system, automatic transmission controller, GPS, and vehicle speed sensor;

[0012] Performing an E-square storage operation on the multiple detected vehicle speed signals.

[0013] In an alternative embodiment, after obtaining multiple vehicle speed signals detected by multiple vehicle instruments, it further includes:

[0014] Calibrating the priorities of the multiple vehicle speed signals detected by the multiple instruments.

[0015] In an alternative embodiment, the performing of credibility verification and correction on the multiple vehicle speed signals according to the relationship information between the vehicle's overall gear transmission ratio and the gear, and obtaining the corrected vehicle speed signals includes:

[0016] Calculating the overall vehicle gear transmission ratio corresponding to each vehicle speed signal;

[0017] Determining the gear information corresponding to the overall vehicle gear transmission ratio of each vehicle speed signal according to the relationship information between the overall vehicle gear transmission ratio and the gear stored in the ECU;

[0018] Determining the current gear of the vehicle according to the gear information corresponding to the overall vehicle gear transmission ratio of each vehicle speed signal, the priorities of each vehicle speed signal, and the principle of taking the mode;

[0019] Determining the actual overall vehicle gear transmission ratio corresponding to the current gear of the vehicle according to the relationship information between the overall vehicle gear transmission ratio and the gear stored in the ECU;

[0020] Correcting the vehicle speed signal according to the actual overall vehicle gear transmission ratio.

[0021] In an alternative embodiment, the calculating of the overall vehicle gear transmission ratio corresponding to each vehicle speed signal includes:

[0022] Calculating the overall vehicle gear transmission ratio corresponding to each vehicle speed signal according to the following formula:

[0023]

[0024] where Gear is the overall vehicle gear transmission ratio, Epm is the engine speed, d is the rear wheel diameter, r 主 is the main reduction ratio, v 获 is the obtained vehicle speed, and k is the correction coefficient.

[0025] In an optional embodiment, determining the current gear of the vehicle according to the gear information corresponding to the overall vehicle gear transmission ratio of each vehicle speed signal, the priority of each vehicle speed signal, and the principle of taking the mode includes:

[0026] When there are two vehicle speed signals and the gear calculation results are the same, the same gear is determined as the current gear of the vehicle. When the gear calculation results are different, the gear of the vehicle speed signal with a higher priority is determined as the current gear, and the gear inconsistency information is recorded;

[0027] When there are three or more vehicle speed signals and the gear calculation results are all the same, the same gear is determined as the current gear of the vehicle. When the gear calculation results are different, the current gear is determined according to the principle of taking the mode. When the gear calculation results are all different, the gear of the vehicle speed signal with a higher priority is determined as the current gear, and the gear inconsistency information is recorded.

[0028] In an optional embodiment, outputting the corrected vehicle speed signal and the verification result information includes:

[0029] Judging whether the existence status of multiple vehicle speed signals stored in Party E has changed;

[0030] Outputting the information on the change in the existence status of multiple vehicle speed signals stored in Party E. If the status changes from existence to non-existence and the non-existence time is greater than the preset threshold, a fault alarm is issued;

[0031] Outputting the recorded gear inconsistency information and the corrected vehicle speed signal.

[0032] In a second aspect, an embodiment of the present application provides a device for automatically obtaining an engine vehicle speed signal, including:

[0033] A first acquisition module for acquiring multiple vehicle speed signals detected by various instruments of the vehicle;

[0034] A second acquisition module for acquiring the relationship information between the overall vehicle gear transmission ratio and the gear stored in the ECU;

[0035] A verification module for performing credibility verification and correction on the multiple vehicle speed signals according to the relationship information between the overall vehicle gear transmission ratio and the gear, and obtaining the corrected vehicle speed signal;

[0036] An output module for outputting the corrected vehicle speed signal and the verification result information.

[0037] In a third aspect, an embodiment of the present application provides an electronic device, including a processor and a memory storing program instructions. The processor is configured to execute the method for automatically obtaining an engine vehicle speed signal provided in the above embodiment when executing the program instructions.

[0038] Fourthly, an embodiment of the present application provides a computer-readable medium, on which computer-readable instructions are stored. The computer-readable instructions are executed by a processor to implement the method for automatically obtaining an engine vehicle speed signal provided in the above embodiments.

[0039] The technical solutions provided by the embodiments of the present application may include the following beneficial effects:

[0040] According to the method for automatically obtaining an engine vehicle speed signal provided by the embodiment of the present application, the ECU can receive multiple vehicle speed signals, and can perform credibility verification on the multiple signals received by the ECU according to the stored gear information to judge the quality of all received signals, making the vehicle speed signal more credible; and correct the finally output vehicle speed signal to make the output of the vehicle speed signal more accurate and credible.

[0041] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present invention and used together with the specification to explain the principles of the present invention.

[0043] Figure 1 is a schematic diagram of a method for automatically obtaining an engine vehicle speed signal provided according to an exemplary embodiment;

[0044] Figure 2 is a schematic diagram of a device for automatically obtaining an engine vehicle speed signal shown according to an exemplary embodiment;

[0045] Figure 3 is a schematic structural diagram of a device for automatically obtaining an engine vehicle speed signal shown according to an exemplary embodiment;

[0046] Figure 4 is a schematic structural diagram of an electronic device shown according to an exemplary embodiment;

[0047] Figure 5 is a schematic diagram of a computer storage medium shown according to an exemplary embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] The following description and the accompanying drawings fully illustrate the specific embodiments of the present invention so that those skilled in the art can practice them.

[0049] It should be clear that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0050] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. On the contrary, they are merely examples of systems and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0051] In the existing control strategy, the ECU can only rely on one signal source. When the signal source appears error or is lost, the ECU cannot automatically switch to other vehicle speed sources for remedial measures. At the same time, it can only passively receive the vehicle speed signals from the remaining controllers or sensors, and cannot perform credibility verification and correction calibration on them. The existing control strategy is not very friendly to the flexible adjustment of the vehicle speed signal source method.

[0052] Based on this, the embodiments of the present application design a scheme that can automatically identify the vehicle speed signal source, perform credibility verification on the vehicle speed signals from multiple sources, and then, according to information such as the engine speed, gear transmission ratio, and rear axle speed ratio, correct the obtained vehicle speed and finally output it, while feedbacking the abnormal information of the existing signals to the driver.

[0053] The following will introduce in detail the method for automatically obtaining the engine vehicle speed signal provided by the embodiments of the present application with reference to the accompanying drawings. See Figure 1 , the method specifically includes the following steps.

[0054] S101: Obtain multiple vehicle speed signals detected by various vehicle instruments.

[0055] In a possible implementation, obtain the vehicle speed signals detected by instruments such as the vehicle instrument panel, body controller, vehicle braking system, automatic transmission controller, GPS, and vehicle speed sensor. When receiving the vehicle speed signal, first determine whether the received vehicle speed signal is valid. For example, when the vehicle speed signal of each message is within the valid range of 0 - 200 km / h and no relevant faults of the message are reported, it is determined that the vehicle speed signal transmitted by the message is valid; when the vehicle speed sensor signal is within the valid range of 0 - 200 km / h and no relevant wiring faults are reported, it is determined that the vehicle speed signal sent by the vehicle speed sensor is valid.

[0056] S102: Obtain the relationship information between the vehicle gear transmission ratio and the gear stored in the ECU.

[0057] Furthermore, obtain the relationship information between the vehicle gear transmission ratio and the gear stored in the ECU (Electronic Control Unit). In the ECU storage unit, the corresponding information of the relationship between the standard gear transmission ratio and the gear is stored.

[0058] Further, perform an E - square access operation on all vehicle speed signals to characterize the historical validity of these vehicle speed signals. Here, the E - square is the storage area in the ECU, and the information in this storage area will not be lost when the ECU is powered off and shut down.

[0059] Further, after obtaining multiple vehicle speed signals detected by multiple vehicle instruments, it further includes: calibrating the priorities of the multiple vehicle speed signals detected by multiple instruments. The priority information can be pre - calibrated. For example, the priority of the sensor is 1, the priority of the instrument panel is 2, the priority of the body control module is 3, the priority of the vehicle's braking system is 4, the priority of the automatic transmission controller is 5, and the priority of the GPS reported data is 6. Among them, 1 represents the highest priority.

[0060] S103: Perform credibility verification and correction on multiple vehicle speed signals according to the relationship information between the vehicle's overall gear ratio and the gear, and obtain the corrected vehicle speed signals.

[0061] In an optional embodiment, performing credibility verification and correction on multiple vehicle speed signals according to the relationship information between the vehicle's overall gear ratio and the gear, and obtaining the corrected vehicle speed signals, includes:

[0062] First, calculate the overall vehicle gear ratio corresponding to each vehicle speed signal. The overall vehicle gear ratio corresponding to each vehicle speed signal can be calculated according to the following formula:

[0063]

[0064] where Gear is the overall vehicle gear ratio, Epm is the engine speed, d is the rear wheel diameter, r 主 is the main reduction ratio, v 获 is the obtained vehicle speed, and k is the correction coefficient.

[0065] According to this step, substituting the obtained multiple vehicle speed information into the above formula, the overall vehicle gear ratio corresponding to each vehicle speed signal can be obtained.

[0066] Further, according to the relationship information between the overall vehicle gear ratio and the gear stored in the ECU, determine the gear information corresponding to the overall vehicle gear ratio of each vehicle speed signal.

[0067] Among them, the ECU stores the standard correspondence between the overall vehicle gear ratio and the gear. According to this correspondence, the gear information corresponding to the overall vehicle gear ratio of each calculated vehicle speed signal can be obtained.

[0068] Further, according to the gear information corresponding to the overall vehicle gear ratio of each vehicle speed signal, the priority of each vehicle speed signal, and the principle of taking the mode, determine the current gear of the vehicle.

[0069] For example, when there is only one vehicle speed signal, directly use the gear corresponding to this vehicle speed signal as the current gear of the vehicle.

[0070] When there are two vehicle speed signals and the gear calculation results are the same, judge the same gear as the current gear of the vehicle. When the gear calculation results are different, judge the gear of the vehicle speed signal with a higher priority as the current gear. For example, there are only two vehicle speed signals measured by the vehicle speed sensor and the instrument, and the corresponding gear information is different. It is known that the priority of the vehicle speed sensor is greater than that of the instrument, then use the gear information corresponding to the vehicle speed sensor as the current gear of the vehicle. And record the gear inconsistency information. For example, record the gear measured by the vehicle speed sensor and the gear measured by the instrument, and record that they are inconsistent.

[0071] When there are three or more vehicle speed signals and the gear calculation results are all the same, judge the same gear as the current gear of the vehicle. When the gear calculation results are different, judge the current gear according to the principle of taking the mode. For example, the gears corresponding to multiple vehicle speed signals are 2nd gear, 2nd gear, 2nd gear, 3rd gear, and 1st gear respectively. According to the principle of taking the mode, the current gear of the vehicle is 2nd gear. If the gear calculation results are all different, judge the gear of the vehicle speed signal with a higher priority as the current gear, and record the gear inconsistency information.

[0072] Further, according to the relationship information between the overall vehicle gear ratio and the gear stored in the ECU, determine the actual overall vehicle gear ratio corresponding to the current gear of the vehicle.

[0073] After obtaining the current gear of the vehicle, retrieve the corresponding relationship between the overall vehicle gear ratio and the gear stored in the ECU again to obtain the actual overall vehicle gear ratio corresponding to the current gear of the vehicle.

[0074] Further, correct the vehicle speed signal according to the actual overall vehicle gear ratio.

[0075] Specifically, substitute the found actual overall vehicle gear ratio into the following formula again:

[0076]

[0077] where Gear is the overall vehicle gear ratio, Epm is the engine speed, d is the rear wheel diameter, r 主 is the main reduction ratio, v 获 is the obtained vehicle speed, and k is the correction coefficient.

[0078] This time, the known value is the overall vehicle gear ratio, and the vehicle speed V can be calculated to obtain the corrected vehicle speed signal.

[0079] S104: Output the corrected vehicle speed signal and the verification result information.

[0080] In a possible implementation, it is determined whether the existence status of the vehicle speed signal stored by Party E has changed, and the information on the change in the existence status of the vehicle speed signal stored by Party E is output. If the status changes from existence to non-existence and the non-existence time is greater than a preset threshold, a fault alarm is triggered; the vehicle owner can be reminded by the engine reporting a fault or the vehicle instrument lighting up. The preset threshold can be set according to the actual situation.

[0081] Furthermore, it also includes outputting the recorded gear inconsistency information, and outputting the recorded gear inconsistency information for the user to judge which instruments measure abnormal vehicle speed data, set priorities according to the abnormal conditions of the instruments, or repair the equipment.

[0082] Furthermore, the corrected vehicle speed signal is output, and cruise control, vehicle fuel consumption calculation, speed limit control during a fault, maximum speed limit control, automatic transmission shift strategy control, guiding the driver to shift gears or operate the accelerator are performed according to the corrected vehicle speed signal, ensuring the credibility and accuracy of the vehicle speed.

[0083] In a possible implementation, the results of obtaining the engine vehicle speed signal are shown in the following table:

[0084]

[0085] As shown in the above table, the signal acquisition module can receive vehicle speed signals from the vehicle instrument, body controller, vehicle brake system, automatic transmission controller, GPS, and vehicle speed sensor, and priorities are set. Among them, the sensor is level 1, the instrument is level 2, the body controller is level 3, the vehicle brake system is level 4, the automatic transmission controller is level 5, and GPS is level 6. The signal states stored by Party E are respectively the sensor exists, the instrument exists, the body controller does not exist, the vehicle brake system exists, the automatic transmission controller exists, and GPS exists. The signal validity is that the sensor signal, instrument signal, vehicle brake system signal, and automatic transmission controller signal are valid. The vehicle speed signal inputs are the sensor signal 63 km / h, the instrument signal 64 km / h, the vehicle brake system signal 70 km / h, and the automatic transmission controller 42 km / h. The ECU stores the gear transmission ratio information as 1st gear (16), 2nd gear (12), 3rd gear (9), 4th gear (4), 5th gear (3), 6th gear (2), 7th gear (1), 8th gear (0.8).

[0086] The gear transmission ratios calculated by the credibility verification module are respectively: the sensor signal 1.75, the instrument signal 1.7, the vehicle brake system signal 1.68, and the automatic transmission controller 5.2. The corresponding gear signals are the sensor signal 6, the instrument signal 6, the vehicle brake system signal 6, and the automatic transmission controller 4. The gear is determined to be 6 according to the principle of taking the mode. The corrected vehicle speed is 61 km / h.

[0087] The signal output module outputs that the vehicle speed signal of the automatic transmission controller is abnormal and the GPS vehicle speed signal is lost.

[0088] Figure 2 It is a schematic diagram of a device for automatically obtaining the engine vehicle speed signal shown according to an exemplary embodiment.

[0089] As Figure 2 As shown, the device for automatically obtaining the engine vehicle speed signal of the present application mainly includes three parts, namely a signal acquisition module, which is used to acquire the vehicle speed signals detected by instruments such as the vehicle instrument panel, body controller, vehicle braking system, automatic transmission controller, GPS, and vehicle speed sensor. A credibility verification module, which is used to perform credibility verification and correction on multiple vehicle speed signals according to the relationship information between the vehicle gear transmission ratio and the gear, and obtain the corrected vehicle speed signal. A signal output module, which is used to output the verified and corrected vehicle speed signal and abnormal information.

[0090] The solution for automatically obtaining the vehicle speed signal provided by the embodiment of the present application has the following beneficial effects:

[0091] (1) The ECU can receive multiple vehicle speed signals. When a certain signal is lost, it can automatically switch to an alternative vehicle speed signal, making the output of the vehicle speed signal more stable;

[0092] (2) It can perform credibility verification on multiple signals received by the ECU, judge the quality of all received signals, and make the credibility of the vehicle speed signal higher;

[0093] (3) It can correct the finally output vehicle speed signal, making the output of the vehicle speed signal more accurate.

[0094] The embodiment of the present application also provides a device for automatically obtaining the engine vehicle speed signal. This device is used to execute the method for automatically obtaining the engine vehicle speed signal in the above embodiment. As Figure 3 shown, this device includes:

[0095] A first acquisition module 301, which is used to acquire multiple vehicle speed signals detected by various vehicle instruments;

[0096] A second acquisition module 302, which is used to acquire the relationship information between the vehicle gear transmission ratio and the gear stored in the ECU;

[0097] A verification module 303, which is used to perform credibility verification and correction on multiple vehicle speed signals according to the relationship information between the vehicle gear transmission ratio and the gear, and obtain the corrected vehicle speed signal;

[0098] An output module 304, which is used to output the corrected vehicle speed signal and the verification result information.

[0099] It should be noted that when the device for automatically obtaining the engine vehicle speed signal provided in the above embodiments executes the method for automatically obtaining the engine vehicle speed signal, only the division of the above functional modules is used for illustration. In actual applications, the above functions can be allocated to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the device for automatically obtaining the engine vehicle speed signal provided in the above embodiments and the method embodiments for automatically obtaining the engine vehicle speed signal belong to the same concept. The implementation process is shown in the method embodiments and will not be repeated here.

[0100] An embodiment of the present application further provides an electronic device corresponding to the method for automatically obtaining the engine vehicle speed signal provided in the foregoing embodiments to execute the method for automatically obtaining the engine vehicle speed signal described above.

[0101] Please refer to Figure 4 , which shows a schematic diagram of an electronic device provided in some embodiments of the present application. As Figure 4 shown, the electronic device includes: a processor 400, a memory 401, a bus 402, and a communication interface 403. The processor 400, the communication interface 403, and the memory 401 are connected through the bus 402; a computer program that can run on the processor 400 is stored in the memory 401, and when the processor 400 runs the computer program, it executes the method for automatically obtaining the engine vehicle speed signal provided in any of the foregoing embodiments of the present application.

[0102] Among them, the memory 401 may include a high-speed random access memory (RAM: Random Access Memory), and may also include a non-volatile memory, such as at least one disk memory. Through at least one communication interface 403 (which can be wired or wireless), a communication connection is realized between the system network element and at least one other network element, and the Internet, wide area network, local area network, metropolitan area network, etc. can be used.

[0103] The bus 402 may be an ISA bus, a PCI bus, an EISA bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. Among them, the memory 401 is used to store the program. After receiving the execution instruction, the processor 400 executes the program. The method for automatically obtaining the engine vehicle speed signal disclosed in any implementation manner of the foregoing embodiments of the present application can be applied to the processor 400 or implemented by the processor 400.

[0104] The processor 400 may be an integrated circuit chip with the ability to process signals. In the implementation process, each step of the above method may be completed by the integrated logic circuit of the hardware in the processor 400 or the instructions in the form of software. The above-mentioned processor 400 may be a general-purpose processor, including a central processing unit (CPU for short), a network processor (NP for short), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by the hardware decoding processor, or may be executed and completed by the combination of the hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. This storage medium is located in the memory 401, and the processor 400 reads the information in the memory 401 and combines its hardware to complete the steps of the above method.

[0105] The electronic device provided in the embodiment of the present application and the method for automatically obtaining the engine vehicle speed signal provided in the embodiment of the present application are based on the same inventive concept and have the same beneficial effects as those of the method adopted, run, or implemented by it.

[0106] The embodiment of the present application also provides a computer-readable storage medium corresponding to the method for automatically obtaining the engine vehicle speed signal provided in the foregoing embodiment. Please refer to Figure 5 , which shows that the computer-readable storage medium is an optical disc 500, on which a computer program (i.e., a program product) is stored. When the computer program is run by the processor, it will execute the method for automatically obtaining the engine vehicle speed signal provided in any of the foregoing embodiments.

[0107] It should be noted that examples of computer-readable storage media may also include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory, or other optical and magnetic storage media, which will not be elaborated here one by one.

[0108] The computer-readable storage medium provided by the above embodiments of the present application and the method for automatically obtaining the engine vehicle speed signal provided by the embodiments of the present application are based on the same inventive concept and have the same beneficial effects as the methods adopted, run, or implemented by the application programs stored therein.

[0109] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0110] The above embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A method for automatically obtaining an engine vehicle speed signal, characterized in that, Including: Obtaining multiple vehicle speed signals detected by multiple vehicle instruments; Calibrating the priorities of the multiple vehicle speed signals detected by the multiple instruments; Obtaining the relationship information between the overall vehicle gear ratio and the gear stored in the ECU; Performing credibility verification and correction on the multiple vehicle speed signals according to the relationship information between the overall vehicle gear ratio and the gear, and obtaining the corrected vehicle speed signals; including: calculating the overall vehicle gear ratio corresponding to each vehicle speed signal; determining the gear information corresponding to the overall vehicle gear ratio of each vehicle speed signal according to the relationship information between the overall vehicle gear ratio and the gear stored in the ECU; determining the current gear of the vehicle according to the gear information corresponding to the overall vehicle gear ratio of each vehicle speed signal, the priority of each vehicle speed signal, and the principle of taking the mode; determining the actual overall vehicle gear ratio corresponding to the current gear of the vehicle according to the relationship information between the overall vehicle gear ratio and the gear stored in the ECU; correcting the vehicle speed signal according to the actual overall vehicle gear ratio; Outputting the corrected vehicle speed signal and the verification result information.

2. The method according to claim 1, characterized in that, The obtaining multiple vehicle speed signals detected by multiple vehicle instruments includes: Obtaining multiple vehicle speed signals detected by the vehicle's overall vehicle instrument, body controller, overall vehicle brake system, automatic transmission controller, GPS, and vehicle speed sensor; Performing an E-square storage operation on the multiple detected vehicle speed signals.

3. The method according to claim 1, wherein The calculating the overall vehicle gear ratio corresponding to each vehicle speed signal includes: Calculating the overall vehicle gear ratio corresponding to each vehicle speed signal according to the following formula: Among them, Gear is the transmission ratio of the whole vehicle gear, Epm is the engine speed, d is the rear wheel diameter, r 主 is the main reduction ratio, v 获 is the obtained vehicle speed, and k is the correction coefficient.

4. The method according to claim 1, wherein The determining the current gear of the vehicle according to the gear information corresponding to the overall vehicle gear ratio of each vehicle speed signal, the priority of each vehicle speed signal, and the principle of taking the mode includes: When there are two vehicle speed signals and the gear calculation results are the same, judging the same gear as the current gear of the vehicle; when the gear calculation results are different, judging the gear of the vehicle speed signal with the higher priority as the current gear, and recording the gear inconsistency information; When there are three or more vehicle speed signals and the gear calculation results are all the same, judging the same gear as the current gear of the vehicle; when the gear calculation results are different, judging the current gear according to the principle of taking the mode; when the gear calculation results are all different, judging the gear of the vehicle speed signal with the higher priority as the current gear, and recording the gear inconsistency information.

5. The method according to claim 4, wherein The outputting the corrected vehicle speed signal and the verification result information includes: Judging whether the existence status of the multiple vehicle speed signals stored in the E-square has changed; Outputting the information on the change in the existence status of the multiple vehicle speed signals stored in the E-square. If the status changes from existence to non-existence and the non-existence time is greater than the preset threshold, a fault alarm is performed; Outputting the recorded gear inconsistency information and the corrected vehicle speed signal.

6. An apparatus for automatically obtaining an engine vehicle speed signal, characterized in that, Including: A first obtaining module for obtaining multiple vehicle speed signals detected by multiple vehicle instruments; Calibrating the priorities of the multiple vehicle speed signals detected by the multiple instruments; A second obtaining module for obtaining the relationship information between the overall vehicle gear ratio and the gear stored in the ECU; A verification module, configured to perform credibility verification and correction on the multiple vehicle speed signals according to the relationship information between the vehicle gear transmission ratio and the gear, and obtain the corrected vehicle speed signals, including: calculating the vehicle gear transmission ratio corresponding to each vehicle speed signal; determining the gear information corresponding to the vehicle gear transmission ratio of each vehicle speed signal according to the relationship information between the vehicle gear transmission ratio and the gear stored in the ECU; determining the current gear of the vehicle according to the gear information corresponding to the vehicle gear transmission ratio of each vehicle speed signal, the priority of each vehicle speed signal, and the principle of taking the mode; determining the actual vehicle gear transmission ratio corresponding to the current gear of the vehicle according to the relationship information between the vehicle gear transmission ratio and the gear stored in the ECU; and correcting the vehicle speed signal according to the actual vehicle gear transmission ratio. An output module, configured to output the corrected vehicle speed signals and verification result information.

7. An electronic device, characterized in that, It includes a processor and a memory storing program instructions, and the processor is configured to execute the method for automatically obtaining the engine vehicle speed signal according to any one of claims 1 to 5 when executing the program instructions.

8. A computer-readable medium, characterized in that, It stores computer-readable instructions, and the computer-readable instructions are executed by the processor to implement the method for automatically obtaining an engine vehicle speed signal according to any one of claims 1 to 5.

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