Engine transmission warning method, system and intelligent connected vehicle

Abstract

The present invention relates to the field of engine-transmission early warning technology, and specifically discloses an engine-transmission early warning method, system, and intelligent connected vehicle. The method comprises: obtaining a gear shift performance evaluation value, a gear shift shock evaluation value, and a gear shift smoothness evaluation value of the transmission at the current moment based on all gear shift monitoring information of the transmission at all gear shift moments within a preset time period before the current moment, thereby obtaining a gear shift early warning judgment value at the current moment; obtaining a gear shift monitoring judgment result at the current moment based on the gear shift early warning judgment value at the current moment; and obtaining an engine-transmission early warning result at the current moment based on the engine and gear shift monitoring judgment results at the current moment. The present invention achieves precise quantification of whether the gear shift operation at the current moment requires an early warning, thereby achieving more comprehensive and accurate engine-transmission early warning results, thereby enabling timely detection of potential gearbox and engine faults.

Description

Technical Field

[0001] The present invention relates to the field of engine transmission early warning technology, and in particular to an engine transmission early warning method and system and an intelligent connected vehicle. Background Art

[0002] Currently, engines and transmissions are key power transmission components in vehicles like automobiles. The engine generates power, while the transmission regulates and transmits this power to the wheels, ensuring smooth driving at varying speeds. The performance of these two components directly impacts a vehicle's fuel economy, driving experience, safety, and overall reliability. Due to their high-load operating characteristics, engines and transmissions are susceptible to failure due to wear, aging, improper use, or design flaws. If these failures are not promptly detected and addressed, they can lead to decreased vehicle performance, reduced fuel efficiency, increased driving safety hazards, and even serious accidents. Therefore, real-time performance monitoring and fault warning of engines and transmissions are crucial. Traditional vehicle maintenance methods often rely on periodic inspections and post-failure repairs, which are not only inefficient but also lack effective early warning of failures. With the advancement of vehicle electronic control systems, while sensors can collect large amounts of operating data, efficiently and accurately analyzing this data to predict potential failures has become a pressing issue.

[0003] However, there is currently no engine-transmission early warning method, system, or intelligent connected vehicle that can accurately quantify whether a warning is needed for the current operating status of the transmission, thereby obtaining more comprehensive and accurate engine-transmission early warning results, so as to promptly detect potential transmission and engine failures, thereby improving equipment reliability and safety.

[0004] Therefore, the present invention proposes an engine transmission early warning method, system and intelligent connected vehicle. Summary of the Invention

[0005] The present invention provides an engine transmission early warning method, system and intelligent network-connected vehicle, which are used to obtain a gear shift performance evaluation value, a gear shift impact evaluation value and a gear shift smoothness evaluation value of the transmission at the current moment based on all gear shift monitoring information of all gear shift moments of the gearbox in a preset time period before the current moment, thereby achieving the quantification of the stability and efficiency of the gearbox in the gear shift process at the current moment, the degree of abnormal impact and the smoothness of power transmission, and then determining a characterization column matrix of each gear shift moment of the gearbox in the preset time period before the current moment, so as to facilitate the subsequent prediction of faulty gear shift moments and the prediction of normal gear shift moments. In addition, based on the characterization column matrix of all gear shift moments of the gearbox in the preset time period before the current moment, all predicted faulty gear shift moments of the gearbox in the preset time period before the current moment are obtained. and all predicted normal shifting moments, and realized the predicted shifting moments of possible and non-faulty gearboxes screened out from all gear shifting moments of the gearbox in a preset time period before the current moment, and then obtained the early warning judgment value of the gearbox at the current moment, and based on the early warning judgment value of the gearbox at the current moment, obtained the monitoring judgment result of the gearbox at the current moment, and then based on the monitoring judgment result of the engine at the current moment and the monitoring judgment result of the gearbox at the current moment, obtained the engine gearbox early warning result at the current moment, and realized the accurate quantification of whether the operation status of the gearbox at the current moment needs to be warned, and then realized the acquisition of more comprehensive and accurate engine gearbox early warning results, which is conducive to timely discovery of potential fault problems of the gearbox and engine, thereby improving the reliability and safety of the equipment.

[0006] The present invention provides an engine transmission early warning method, comprising:

[0007] S1: Obtaining a monitoring judgment result of the engine at the current moment based on all monitoring parameters of the engine at each moment in a preset time period before the current moment;

[0008] S2: Based on all gear shift monitoring information of the gearbox at all gear shift moments within a preset time period before the current moment, obtaining a gear shift performance evaluation value, a gear shift impact evaluation value, and a gear shift smoothness evaluation value of the gearbox at the current moment;

[0009] S3: Based on the shift performance evaluation values, shift shock evaluation values, and shift smoothness evaluation values of all shift moments of the transmission within a preset time period before the current moment, obtaining a characterization column matrix of each shift moment of the transmission within the preset time period before the current moment, and based on the characterization column matrix of all shift moments of the transmission within the preset time period before the current moment, obtaining all predicted faulty shift moments and all predicted normal shift moments of the transmission within the preset time period before the current moment;

[0010] S4: obtaining a warning judgment value of the transmission at the current moment based on all predicted fault shifting moments and all predicted normal shifting moments of the transmission within a preset time period before the current moment, and obtaining a monitoring judgment result of the transmission at the current moment based on the warning judgment value of the transmission at the current moment;

[0011] S5: Based on the monitoring and judgment results of the engine and the transmission at the current moment, obtain the engine and transmission warning results at the current moment.

[0012] Preferably, the engine transmission early warning method, S1: based on all types of monitoring parameters of the engine at each moment in a preset time period before the current moment, obtain the monitoring judgment result of the engine at the current moment, including:

[0013] Obtain all monitoring parameters of the engine at each moment in a preset time period before the current moment, where all monitoring parameters include vibration monitoring parameters, oil pressure monitoring parameters, and coolant temperature monitoring parameters;

[0014] The absolute value of the difference between the mean value of each type of monitoring parameter of the engine at all times within a preset time period before the current time and the corresponding type of monitoring parameter of the engine at the current time is regarded as the fluctuation difference of the corresponding type of monitoring parameter of the engine at the current time;

[0015] The quotient of the fluctuation difference of each type of monitoring parameter of the engine at the current moment and the standard deviation of each type of monitoring parameter of the engine at all moments in a preset time period before the current moment is used as the early warning coefficient of the corresponding type of monitoring parameter of the engine at the current moment;

[0016] Determine whether, among all types of monitoring parameters of the engine at the current moment, there is at least one type of monitoring parameter whose warning coefficient is greater than a preset value. If so, a warning will be required as the monitoring judgment result of the engine at the current moment; otherwise, no warning will be required as the monitoring judgment result of the engine at the current moment.

[0017] Preferably, the engine transmission early warning method, S2: based on all shift monitoring information of the transmission at all shift moments within a preset time period before the current moment, obtaining the gear shift performance evaluation value, the shift shock evaluation value, and the shift smoothness evaluation value of the transmission at the current moment, including:

[0018] The moment when the gearbox starts shifting in each gear shifting process within the preset time period before the current moment is regarded as the gear shifting moment of the gearbox within the preset time period before the current moment;

[0019] Obtaining all gear shift monitoring information of the transmission at all gear shift moments within a preset time period before the current moment, wherein all gear shift monitoring information includes gear entry performance information, gear shift impact information, and gear shift smoothness information, wherein the gear entry performance information includes a gear entry time value and a gear entry acceleration variable value, the gear shift impact information includes a vibration frequency value and a vibration variable value, and the gear shift smoothness information includes a gearbox speed value and a vehicle speed value;

[0020] Based on all the gear shift monitoring information of the gearbox at all the gear shift moments in a preset time period before the current moment, the gear shift performance evaluation value, gear shift impact evaluation value and gear shift smoothness evaluation value of the gearbox at the current moment are obtained.

[0021] Preferably, the engine transmission early warning method obtains the gear shift performance evaluation value, gear shift impact evaluation value, and gear shift smoothness evaluation value of the transmission at the current moment based on all gear shift monitoring information of the transmission at all gear shift moments within a preset time period before the current moment, including:

[0022] Obtaining, based on all types of gear-entry performance information, all types of gear-shift impact information, and all types of gear-shift smoothness information at all gear-shift moments of the gearbox within a preset time period before the current moment, a fluctuation coefficient of all types of gear-entry performance information, a fluctuation coefficient of all types of gear-shift impact information, and a fluctuation coefficient of all types of gear-shift smoothness information at all gear-shift moments of the gearbox within the preset time period before the current moment;

[0023] The sum of the fluctuation coefficients of all types of gear-entry performance information of the gearbox at each gear shifting moment in a preset time period before the current moment is used as the gear-entry performance evaluation value of the gearbox at the corresponding gear shifting moment in the preset time period before the current moment, and the average of the gear-entry performance evaluation values of all gear shifting moments in the preset time period before the current moment is used as the gear-entry performance evaluation value of the gearbox at the current moment;

[0024] The sum of the fluctuation coefficients of all types of gear shift shock information at each gear shift moment of the gearbox within a preset time period before the current moment is used as the gear shift shock evaluation value of the gearbox at the corresponding gear shift moment within the preset time period before the current moment, and the average of the gear shift shock evaluation values of all gear shift moments of the gearbox within the preset time period before the current moment is used as the gear shift shock evaluation value of the gearbox at the current moment;

[0025] If the fluctuation coefficients of all types of gear shifting smoothness information of the gearbox at each gear shifting moment in the preset time period before the current moment are not greater than the preset fluctuation coefficient threshold, the corresponding gear shifting moment of the gearbox in the preset time period before the current moment is regarded as the stable moment of the gearbox in the preset time period before the current moment, and the quotient between the number of all gear shifting moments of the gearbox in the preset time period before the current moment and the number of all stable moments of the gearbox in the preset time period before the current moment is regarded as the gear shifting smoothness evaluation value of the gearbox at the current moment.

[0026] Preferably, the engine transmission early warning method obtains a characterization column matrix of each gear shift moment of the gearbox within a preset time period before the current moment based on the gear shift performance evaluation value, gear shift shock evaluation value, and gear shift smoothness evaluation value of all gear shift moments of the gearbox within a preset time period before the current moment, including:

[0027] Obtain all types of evaluation values of the transmission at all gear shift moments within a preset time period before the current moment, where all types of evaluation values include gear entry performance evaluation value, gear shift impact evaluation value, and gear shift smoothness evaluation value;

[0028] The quotient of each category evaluation value of each gear shift moment of the gearbox in the preset time period before the current moment and the average of the corresponding category evaluation values of all gear shift moments of the gearbox in the preset time period before the current moment is used as the ranking degree of the corresponding category evaluation value of the gearbox corresponding to the gear shift moment in the preset time period before the current moment;

[0029] Sorting all the class evaluation values of each gear shifting moment of the gearbox within a preset time period before the current moment in descending order of the sorting degree, obtaining a sorting result of all the class evaluation values of each gear shifting moment of the gearbox within the preset time period before the current moment, and obtaining a first class evaluation value, a second class evaluation value, and a third class evaluation value of each gear shifting moment of the gearbox within the preset time period before the current moment based on the sorting result of all the class evaluation values of each gear shifting moment of the gearbox within the preset time period before the current moment;

[0030] Based on the first evaluation value, the second evaluation value and the third evaluation value of each gear shifting moment of the gearbox in the preset time period before the current moment, a characterization column matrix corresponding to the gear shifting moment of the gearbox in the preset time period before the current moment is obtained.

[0031] Preferably, the engine transmission early warning method obtains all predicted fault shift moments and all predicted normal shift moments of the transmission within the preset time period before the current moment based on a characterization column matrix of all shift moments of the transmission within the preset time period before the current moment, including:

[0032] The mean of each type of evaluation values of the gearbox at all gear shifting moments within the preset time period before the current moment is regarded as the constructed mean of the corresponding type of evaluation values of the gearbox within the preset time period before the current moment, and the constructed mean corresponding to the first type of evaluation value of each gear shifting moment of the gearbox within the preset time period before the current moment is regarded as the first matrix element of the gearbox corresponding to the gear shifting moment within the preset time period before the current moment, the constructed mean corresponding to the second type of evaluation value of each gear shifting moment of the gearbox within the preset time period before the current moment is regarded as the second matrix element of the gearbox corresponding to the gear shifting moment within the preset time period before the current moment, and the constructed mean corresponding to the third type of evaluation value of each gear shifting moment of the gearbox within the preset time period before the current moment is regarded as the third matrix element of the gearbox corresponding to the gear shifting moment within the preset time period before the current moment;

[0033] Based on the first matrix element, the second matrix element, and the third matrix element of each gear shifting moment of the gearbox within the preset time period before the current moment, a representation row matrix corresponding to the gear shifting moment of the gearbox within the preset time period before the current moment is obtained, and the representation column matrix and the representation row matrix of each gear shifting moment of the gearbox within the preset time period before the current moment are matrix-multiplied to obtain a prediction determination matrix for each gear shifting moment of the gearbox within the preset time period before the current moment;

[0034] If the spectral radius of the prediction judgment matrix of each gear shifting moment of the transmission within the preset time period before the current moment is greater than the preset spectral radius threshold, the gear shifting moment corresponding to the gearbox within the preset time period before the current moment is regarded as the predicted faulty gear shifting moment; otherwise, the gear shifting moment corresponding to the gearbox within the preset time period before the current moment is regarded as the predicted normal gear shifting moment.

[0035] Preferably, the engine transmission early warning method, S4: based on all predicted fault shifting moments and all predicted normal shifting moments of the transmission within a preset time period before the current moment, obtaining an early warning judgment value of the transmission at the current moment, and based on the early warning judgment value of the transmission at the current moment, obtaining a monitoring judgment result of the transmission at the current moment, including:

[0036] The predicted fault shift moment with the shortest time interval between the current moment and all predicted fault shift moments of the transmission within a preset time period before the current moment is used as the reference fault shift moment of the transmission at the current moment; and the predicted normal shift moment with the shortest time interval between the current moment and all predicted normal shift moments of the transmission within a preset time period before the current moment is used as the reference normal shift moment of the transmission at the current moment;

[0037] Based on the reference fault shifting time and the reference normal shifting time of the gearbox at the current moment, the early warning judgment value of the gearbox at the current moment is obtained, which is:

[0038]

[0039] Among them, δ is the warning judgment value of the gearbox at the current moment, max(α2,β2,γ2) is the maximum value among (α2,β2,γ2), α2 is the gear-entry performance evaluation value of the gearbox at the reference fault shift moment at the current moment, β2 is the gear-shift shock evaluation value of the gearbox at the reference fault shift moment at the current moment, γ2 is the gear-shift smoothness evaluation value of the gearbox at the reference fault shift moment at the current moment, max(α0,β0,γ0) is the maximum value among (α0,β0,γ0), α0 is the average of the gear-entry performance evaluation values of all gear shift moments in the preset time period before the current moment, β0 is the gear-shift smoothness evaluation value of all gear shift moments in the preset time period before the current moment is the mean of the gear shift shock evaluation values at the moment, γ0 is the mean of the gear shift smoothness evaluation values of all gear shift moments of the gearbox in the preset time period before the current moment, n1 is the number of all predicted normal gear shift moments of the gearbox in the preset time period before the current moment, n2 is the number of all predicted fault gear shift moments of the gearbox in the preset time period before the current moment, α1 is the gear engagement performance evaluation value of the gearbox at the reference normal gear shift moment at the current moment, β1 is the gear shift shock evaluation value of the gearbox at the reference normal gear shift moment at the current moment, γ1 is the gear shift smoothness evaluation value of the gearbox at the reference normal gear shift moment at the current moment, ln is the natural logarithm, and the natural constant e is 2.718;

[0040] If the warning judgment value of the gearbox at the current moment is greater than the preset warning judgment threshold, a warning will be required as the monitoring and judgment result of the gearbox at the current moment; otherwise, no warning will be required as the monitoring and judgment result of the gearbox at the current moment.

[0041] Preferably, the engine transmission warning method, S5: based on the monitoring and judgment results of the engine and the transmission at the current moment, obtaining the engine transmission warning result at the current moment, includes:

[0042] When the monitoring judgment result of the engine or transmission at the current moment is that an early warning is required, the early warning requirement is regarded as the engine and transmission early warning result at the current moment.

[0043] The present invention provides an engine transmission warning system, configured to execute any one of the engine transmission warning methods of embodiments 1 to 8, comprising:

[0044] A first judgment module is used to obtain a monitoring judgment result of the engine at the current moment based on all types of monitoring parameters of the engine at each moment in a preset time period before the current moment;

[0045] An evaluation module, configured to obtain a gear shift performance evaluation value, a gear shift impact evaluation value, and a gear shift smoothness evaluation value of the gearbox at the current moment based on all gear shift monitoring information of the gearbox at all gear shift moments within a preset time period before the current moment;

[0046] an analysis module for obtaining a characterization column matrix of each gear shift moment of the gearbox within the preset time period before the current moment based on the gear entry performance evaluation values, gear shift shock evaluation values, and gear shift smoothness evaluation values of all gear shift moments of the gearbox within the preset time period before the current moment, and obtaining all predicted faulty gear shift moments and all predicted normal gear shift moments of the gearbox within the preset time period before the current moment based on the characterization column matrix of all gear shift moments of the gearbox within the preset time period before the current moment;

[0047] a second judgment module, configured to obtain a warning judgment value of the transmission at the current moment based on all predicted fault shift moments and all predicted normal shift moments of the transmission within a preset time period before the current moment, and obtain a monitoring judgment result of the transmission at the current moment based on the warning judgment value of the transmission at the current moment;

[0048] The early warning module is used to obtain the engine and transmission early warning result at the current moment based on the monitoring and judgment result of the engine and the monitoring and judgment result of the transmission at the current moment.

[0049] The present invention provides an intelligent connected vehicle, which adopts the engine and transmission warning system as described in Example 9.

[0050] The beneficial effects of the present invention over the prior art are as follows: based on all the gear shift monitoring information of the gearbox at all the gear shift moments in the preset time period before the current moment, the gear shift performance evaluation value, the gear shift impact evaluation value and the gear shift smoothness evaluation value of the gearbox at the current moment are obtained, and the stability and efficiency of the gearbox in the gear shift process at the current moment, the degree of abnormal impact and the smoothness of power transmission are quantified respectively, and then the characterization column matrix of each gear shift moment of the gearbox in the preset time period before the current moment is determined, which is convenient for the subsequent prediction of faulty gear shift moments and the prediction of normal gear shift moments. In addition, based on the characterization column matrix of all the gear shift moments of the gearbox in the preset time period before the current moment, all the predicted faulty gear shift moments and all the predicted normal gear shift moments of the gearbox in the preset time period before the current moment are obtained. Frequent gear shifting moments can be realized by screening out the gear shifting moments at which the gearbox may or may not have a fault from all the gear shifting moments in the preset time period before the current moment, thereby obtaining the early warning judgment value of the gearbox at the current moment, and based on the early warning judgment value of the gearbox at the current moment, obtaining the monitoring judgment result of the gearbox at the current moment, and then obtaining the engine gearbox early warning result at the current moment based on the monitoring judgment result of the engine at the current moment and the monitoring judgment result of the gearbox at the current moment, thereby realizing accurate quantification of whether the operation status of the gearbox at the current moment requires an early warning, thereby realizing obtaining more comprehensive and accurate engine gearbox early warning results, which is conducive to timely discovery of potential fault problems of the gearbox and engine, thereby improving the reliability and safety of the equipment.

[0051] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written application documents.

[0052] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0054] Figure 1 This is a flow chart of an engine transmission early warning method according to an embodiment of the present invention;

[0055] Figure 2 Schematic diagram of an engine transmission warning system in an embodiment of the present invention. DETAILED DESCRIPTION

[0056] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0057] Example 1:

[0058] The present invention provides an engine gearbox early warning method, referring to Figure 1 ,include:

[0059] S1: Obtaining a monitoring judgment result of the engine at the current moment based on all monitoring parameters of the engine at each moment in a preset time period before the current moment;

[0060] S2: Based on all gear shift monitoring information of the gearbox at all gear shift moments within a preset time period before the current moment, obtaining a gear shift performance evaluation value, a gear shift impact evaluation value, and a gear shift smoothness evaluation value of the gearbox at the current moment;

[0061] S3: Based on the shift performance evaluation values, shift shock evaluation values, and shift smoothness evaluation values of all shift moments of the transmission within a preset time period before the current moment, obtaining a characterization column matrix of each shift moment of the transmission within the preset time period before the current moment, and based on the characterization column matrix of all shift moments of the transmission within the preset time period before the current moment, obtaining all predicted faulty shift moments and all predicted normal shift moments of the transmission within the preset time period before the current moment;

[0062] S4: obtaining a warning judgment value of the transmission at the current moment based on all predicted fault shifting moments and all predicted normal shifting moments of the transmission within a preset time period before the current moment, and obtaining a monitoring judgment result of the transmission at the current moment based on the warning judgment value of the transmission at the current moment;

[0063] S5: Based on the monitoring and judgment results of the engine and the transmission at the current moment, obtain the engine and transmission warning results at the current moment.

[0064] In this embodiment, the preset time period is a time period preset to obtain all types of monitoring parameters of the engine or all gear shift monitoring information of the transmission.

[0065] In this embodiment, each moment is a moment selected from a preset time period before the current moment, and the time length between each adjacent moment is the same.

[0066] In this embodiment, the monitoring judgment result of the engine at the current moment is a judgment result of whether the operation status of the engine at the current moment requires an early warning, and the monitoring judgment result of the engine at the current moment includes whether an early warning is required or not.

[0067] In this embodiment, the gear shifting performance evaluation value of the transmission at the current moment is a value evaluated based on all gear shifting monitoring information of the transmission at all gear shifting moments in a preset time period before the current moment, which can reflect the smoothness and efficiency of the gear shifting process at the current moment. The larger the gear shifting performance evaluation value, the lower the smoothness and efficiency of the gear shifting process.

[0068] In this embodiment, the gear shift shock evaluation value of the gearbox at the current moment is a value evaluated based on all gear shift monitoring information of the gearbox at all gear shift moments in a preset time period before the current moment, which can reflect the degree of abnormal shock in the gearbox during the gear shifting process at the current moment. The larger the gear shift shock evaluation value, the greater the degree of abnormal shock in the gearbox during the gear shifting process.

[0069] In this embodiment, the gear shift smoothness evaluation value of the transmission at the current moment is a value evaluated based on all gear shift monitoring information of the transmission at all gear shift moments in a preset time period before the current moment, which can reflect the smoothness of power transmission of the transmission during the gear shifting process at the current moment. The larger the gear shift smoothness evaluation value, the less smooth the power transmission of the transmission during the gear shifting process.

[0070] In this embodiment, the characterization column matrix is a column matrix constructed by using the gear shifting performance evaluation value, the gear shifting shock evaluation value and the gear shifting smoothness evaluation value of each gear shifting moment of the gearbox within a preset time period before the current moment as matrix elements, and can characterize the gear shifting situation of each gear shifting moment of the gearbox within a preset time period before the current moment.

[0071] In this embodiment, the predicted faulty shifting moment is a shifting moment at which a fault of the transmission is predicted to occur, which is selected from all the shifting moments of the transmission within a preset time period before the current moment.

[0072] In this embodiment, the predicted normal shifting time is a shifting time at which no fault of the transmission is predicted to occur, which is screened out from all the shifting times of the transmission within a preset time period before the current time.

[0073] In this embodiment, the early warning judgment value of the transmission at the current moment is a judgment value obtained based on all predicted fault shift moments and all predicted normal shift moments of the transmission within a preset time period before the current moment, which can characterize whether the operation status of the transmission at the current moment requires an early warning.

[0074] In this embodiment, the monitoring and judgment result of the gearbox at the current moment is a judgment result of whether a warning is required for the operation of the gearbox at the current moment, which is obtained based on the warning judgment value of the gearbox at the current moment, and the monitoring and judgment result of the engine at the current moment includes whether a warning is required or not.

[0075] In this embodiment, the engine transmission warning result at the current moment is the engine transmission warning result at the current moment obtained based on the monitoring and judgment result of the engine at the current moment and the monitoring and judgment result of the transmission at the current moment.

[0076] The beneficial effects of the above technology are: according to all the gear shift monitoring information of the gearbox at all the gear shifting moments in the preset time period before the current moment, the gear shifting performance evaluation value, the gear shifting impact evaluation value and the gear shifting smoothness evaluation value of the gearbox at the current moment are obtained, and the smoothness and efficiency of the gearbox in the gear shifting process at the current moment, the degree of abnormal impact and the smoothness of power transmission are quantified respectively, and then the characterization column matrix of each gear shifting moment of the gearbox in the preset time period before the current moment is determined, which is convenient for the subsequent prediction of faulty gear shifting moments and the prediction of normal gear shifting moments. According to the characterization column matrix of all the gear shifting moments of the gearbox in the preset time period before the current moment, all the predicted faulty gear shifting moments and all the predicted normal gear shifting moments of the gearbox in the preset time period before the current moment are obtained. At this moment, it is realized to screen out the predicted gear shift moments with possible and non-faulty gearboxes from all gear shift moments of the gearbox within a preset time period before the current moment, and then obtain the early warning judgment value of the gearbox at the current moment, and obtain the monitoring judgment result of the gearbox at the current moment based on the early warning judgment value of the gearbox at the current moment, and then obtain the engine gearbox early warning result at the current moment based on the monitoring judgment result of the engine at the current moment and the monitoring judgment result of the gearbox at the current moment, and realize accurate quantification of whether the operation status of the gearbox at the current moment needs to be warned, and then realize obtaining more comprehensive and accurate engine gearbox early warning results, which is conducive to timely discovery of potential fault problems of the gearbox and engine, thereby improving the reliability and safety of the equipment.

[0077] Example 2:

[0078] Based on Example 1, the engine transmission early warning method, S1: based on all types of monitoring parameters of the engine at each moment in a preset time period before the current moment, obtain the monitoring judgment result of the engine at the current moment, including:

[0079] Obtain all monitoring parameters of the engine at each moment in a preset time period before the current moment, where all monitoring parameters include vibration monitoring parameters, oil pressure monitoring parameters, and coolant temperature monitoring parameters;

[0080] The absolute value of the difference between the mean value of each type of monitoring parameter of the engine at all times within a preset time period before the current time and the corresponding type of monitoring parameter of the engine at the current time is regarded as the fluctuation difference of the corresponding type of monitoring parameter of the engine at the current time;

[0081] The quotient of the fluctuation difference of each type of monitoring parameter of the engine at the current moment and the standard deviation of each type of monitoring parameter of the engine at all moments in a preset time period before the current moment is used as the early warning coefficient of the corresponding type of monitoring parameter of the engine at the current moment;

[0082] Determine whether, among all types of monitoring parameters of the engine at the current moment, there is at least one type of monitoring parameter whose warning coefficient is greater than a preset value. If so, a warning will be required as the monitoring judgment result of the engine at the current moment; otherwise, no warning will be required as the monitoring judgment result of the engine at the current moment.

[0083] In this embodiment, the vibration monitoring parameter is a value of the vibration frequency of the engine monitored in real time by a vibration sensor pre-installed on the surface of the engine.

[0084] In this embodiment, the oil pressure monitoring parameter is the value of the pressure generated by the oil in the lubrication system when the engine is running, and the pressure value is displayed on the instrument panel through the oil pressure gauge or the oil pressure signal indicator light to reflect the lubrication condition of the engine oil.

[0085] In this embodiment, the coolant temperature monitoring parameter is a temperature value of the coolant in the engine cooling system monitored by a preset temperature sensor.

[0086] In this embodiment, the preset value is a pre-set value used to obtain the monitoring and judgment result of the engine at the current moment.

[0087] The beneficial effects of the above technology are: clarifying the specific parameter items of all types of monitoring parameters of the engine at each moment in the preset time period before the current moment, and obtaining the fluctuation difference of all types of monitoring parameters of the engine at the current moment based on each type of monitoring parameters of the engine at all moments in the preset time period before the current moment, and then obtaining the monitoring judgment result of the engine at the current moment based on the fluctuation difference of all types of monitoring parameters of the engine at the current moment.

[0088] Example 3:

[0089] Based on Example 1, the engine transmission early warning method, S2: based on all shift monitoring information of the transmission at all shift moments within a preset time period before the current moment, obtaining the gear shift performance evaluation value, the shift shock evaluation value, and the shift smoothness evaluation value of the transmission at the current moment, including:

[0090] The moment when the gearbox starts shifting in each gear shifting process within the preset time period before the current moment is regarded as the gear shifting moment of the gearbox within the preset time period before the current moment;

[0091] Obtaining all gear shift monitoring information of the transmission at all gear shift moments within a preset time period before the current moment, wherein all gear shift monitoring information includes gear entry performance information, gear shift impact information, and gear shift smoothness information, wherein the gear entry performance information includes a gear entry time value and a gear entry acceleration variable value, the gear shift impact information includes a vibration frequency value and a vibration variable value, and the gear shift smoothness information includes a gearbox speed value and a vehicle speed value;

[0092] Based on all the gear shift monitoring information of the gearbox at all the gear shift moments in a preset time period before the current moment, the gear shift performance evaluation value, gear shift impact evaluation value and gear shift smoothness evaluation value of the gearbox at the current moment are obtained.

[0093] In this embodiment, the gear shifting process is a complete process of the transmission shifting from one gear to another.

[0094] In this embodiment, the gear-entry time value is the value of the length of time required for the transmission to complete the gear shift during the gear shift process corresponding to each gear shift moment.

[0095] In this embodiment, the gear-entry acceleration variable value is the value of the change in vehicle acceleration caused by the gear change during the gear shifting process corresponding to each gear shifting moment of the transmission.

[0096] In this embodiment, the vibration frequency value is the vibration frequency value of the gearbox when the gear shift is completed during the gear shifting process corresponding to each gear shifting moment.

[0097] In this embodiment, the vibration variable value is the value of the change in the vibration frequency of the transmission when the transmission shifts from one gear to another during the gear shifting process corresponding to each gear shifting moment.

[0098] In this embodiment, the transmission speed value is a value of the transmission input shaft speed when the gear shift is completed during the gear shifting process corresponding to each gear shifting moment.

[0099] In this embodiment, the vehicle speed value is the vehicle speed value when the gearbox completes the gear shift during the gear shift process corresponding to each gear shift moment.

[0100] The beneficial effects of the above technology are: clarifying the specific items of the gear shift performance information, gear shift impact information and gear shift smoothness information of all gear shift moments of the gearbox within the preset time period before the current moment, thereby facilitating the subsequent acquisition of the gear shift performance evaluation value, gear shift impact evaluation value and gear shift smoothness evaluation value of the gearbox at the current moment based on all gear shift monitoring information of all gear shift moments of the gearbox within the preset time period before the current moment.

[0101] Example 4:

[0102] Based on Example 3, the engine transmission early warning method obtains the gear shift performance evaluation value, gear shift shock evaluation value, and gear shift smoothness evaluation value of the transmission at the current moment based on all gear shift monitoring information of the transmission at all gear shift moments within a preset time period before the current moment, including:

[0103] Obtaining, based on all types of gear-entry performance information, all types of gear-shift impact information, and all types of gear-shift smoothness information at all gear-shift moments of the gearbox within a preset time period before the current moment, a fluctuation coefficient of all types of gear-entry performance information, a fluctuation coefficient of all types of gear-shift impact information, and a fluctuation coefficient of all types of gear-shift smoothness information at all gear-shift moments of the gearbox within the preset time period before the current moment;

[0104] The sum of the fluctuation coefficients of all types of gear-entry performance information of the gearbox at each gear shifting moment in a preset time period before the current moment is used as the gear-entry performance evaluation value of the gearbox at the corresponding gear shifting moment in the preset time period before the current moment, and the average of the gear-entry performance evaluation values of all gear shifting moments in the preset time period before the current moment is used as the gear-entry performance evaluation value of the gearbox at the current moment;

[0105] The sum of the fluctuation coefficients of all types of gear shift shock information at each gear shift moment of the gearbox within a preset time period before the current moment is used as the gear shift shock evaluation value of the gearbox at the corresponding gear shift moment within the preset time period before the current moment, and the average of the gear shift shock evaluation values of all gear shift moments of the gearbox within the preset time period before the current moment is used as the gear shift shock evaluation value of the gearbox at the current moment;

[0106] If the fluctuation coefficients of all types of gear shifting smoothness information of the gearbox at each gear shifting moment in the preset time period before the current moment are not greater than the preset fluctuation coefficient threshold, the corresponding gear shifting moment of the gearbox in the preset time period before the current moment is regarded as the stable moment of the gearbox in the preset time period before the current moment, and the quotient between the number of all gear shifting moments of the gearbox in the preset time period before the current moment and the number of all stable moments of the gearbox in the preset time period before the current moment is regarded as the gear shifting smoothness evaluation value of the gearbox at the current moment.

[0107] In this embodiment, based on all types of gear-entry performance information, all types of gear-shift impact information, and all types of gear-shift smoothness information at all gear-shift moments of the gearbox within a preset time period before the current moment, the fluctuation coefficients of all types of gear-entry performance information, all types of gear-shift impact information, and all types of gear-shift smoothness information at all gear-shift moments of the gearbox within the preset time period before the current moment are obtained, namely:

[0108] The difference between the maximum and minimum values of each type of gear-entry performance information (each type of gear-shift shock information or each type of gear-shift smoothness information) of the transmission in all gear-shift moments within a preset time period before the current moment is used as the extreme difference value of each type of gear-entry performance information (each type of gear-shift shock information or each type of gear-shift smoothness information) of the transmission in the preset time period before the current moment, and the quotient between the extreme difference values of each type of gear-entry performance information (each type of gear-shift shock information or each type of gear-shift smoothness information) of the transmission at each gear-shift moment within the preset time period before the current moment and the corresponding type of gear-entry performance information (corresponding type of gear-shift shock information or corresponding type of gear-shift smoothness information) of the transmission in the preset time period before the current moment is used as the fluctuation coefficient of the corresponding type of gear-entry performance information (corresponding type of gear-shift shock information or corresponding type of gear-shift smoothness information) of the transmission at the corresponding gear-shift moment within the preset time period before the current moment.

[0109] In this embodiment, the preset fluctuation coefficient threshold is a preset fluctuation coefficient threshold used to obtain a stable moment of the gearbox within a preset time period before the current moment.

[0110] The beneficial effects of the above technology are: based on all gear shift monitoring information of the gearbox at all gear shift moments in a preset time period before the current moment, the gear shift performance evaluation value, gear shift impact evaluation value and gear shift smoothness evaluation value of the gearbox at the current moment are obtained, and the smoothness and efficiency of the gearbox in the gear shift process at the current moment, the degree of abnormal impact and the smoothness of power transmission are quantified separately.

[0111] Example 5:

[0112] Based on Example 1, the engine transmission early warning method obtains a characterization column matrix of each gear shift moment of the gearbox within a preset time period before the current moment based on the gear shift performance evaluation value, gear shift shock evaluation value, and gear shift smoothness evaluation value of all gear shift moments of the gearbox within a preset time period before the current moment, including:

[0113] Obtain all types of evaluation values of the transmission at all gear shift moments within a preset time period before the current moment, where all types of evaluation values include gear entry performance evaluation value, gear shift impact evaluation value, and gear shift smoothness evaluation value;

[0114] The quotient of each category evaluation value of each gear shift moment of the gearbox in the preset time period before the current moment and the average of the corresponding category evaluation values of all gear shift moments of the gearbox in the preset time period before the current moment is used as the ranking degree of the corresponding category evaluation value of the gearbox corresponding to the gear shift moment in the preset time period before the current moment;

[0115] Sorting all the class evaluation values of the gearbox at each gear shifting moment in a preset time period before the current moment in descending order of the sorting degree, obtaining a sorting result of all the class evaluation values of the gearbox at each gear shifting moment in the preset time period before the current moment, and obtaining a first class evaluation value (A), a second class evaluation value (B), and a third class evaluation value (C) of the gearbox at each gear shifting moment in the preset time period before the current moment based on the sorting result (A, B, C) of all the class evaluation values of the gearbox at each gear shifting moment in the preset time period before the current moment;

[0116] Based on the first-category evaluation value, the second-category evaluation value, and the third-category evaluation value of each gear shifting moment in the preset time period before the current moment, the characterization column matrix of the gear shifting moment corresponding to the preset time period before the current moment is obtained.

[0117] The beneficial effects of the above technology are: based on the gear-entry performance evaluation values, gear shift shock evaluation values and gear shift smoothness evaluation values of all gear shift moments of the gearbox within the preset time period before the current moment, a characterization column matrix of each gear shift moment of the gearbox within the preset time period before the current moment is obtained, which is convenient for subsequent prediction of faulty gear shift moments and screening out of normal gear shift moments. A specific method for constructing a characterization column matrix of each gear shift moment of the gearbox within the preset time period before the current moment is given in detail, which improves the accuracy and efficiency of fault prediction, enables technicians to quickly locate the time point when faults may occur, and reduces misjudgment of normal gear shift moments.

[0118] Example 6:

[0119] Based on Example 5, the engine transmission early warning method obtains all predicted fault shift moments and all predicted normal shift moments of the transmission within the preset time period before the current moment based on a characterization column matrix of all shift moments of the transmission within the preset time period before the current moment, including:

[0120] The mean of each type of evaluation value of all gear shifting moments of the gearbox within the preset time period before the current moment is regarded as the constructed mean of the corresponding type of evaluation value of the gearbox within the preset time period before the current moment, and the constructed mean corresponding to the first type of evaluation value of each gear shifting moment of the gearbox within the preset time period before the current moment is regarded as the first matrix element (Q) of the gearbox corresponding to the gear shifting moment within the preset time period before the current moment, the constructed mean corresponding to the second type of evaluation value of each gear shifting moment of the gearbox within the preset time period before the current moment is regarded as the second matrix element (W) of the gearbox corresponding to the gear shifting moment within the preset time period before the current moment, and the constructed mean corresponding to the third type of evaluation value of each gear shifting moment of the gearbox within the preset time period before the current moment is regarded as the third matrix element (R) of the gearbox corresponding to the gear shifting moment within the preset time period before the current moment;

[0121] Based on the first matrix element (Q), the second matrix element (W) and the third matrix element (R) of each gear shifting moment of the gearbox in the preset time period before the current moment, the characterization row matrix corresponding to the gear shifting moment in the preset time period before the current moment is obtained. ( QWR ) , and perform matrix multiplication on the characterization column matrix and the characterization row matrix of each gear shifting moment of the gearbox in the preset time period before the current moment, to obtain a prediction determination matrix for each gear shifting moment of the gearbox in the preset time period before the current moment;

[0122] If the spectral radius of the prediction judgment matrix of each gear shifting moment of the transmission within the preset time period before the current moment is greater than the preset spectral radius threshold, the gear shifting moment corresponding to the gearbox within the preset time period before the current moment is regarded as the predicted faulty gear shifting moment; otherwise, the gear shifting moment corresponding to the gearbox within the preset time period before the current moment is regarded as the predicted normal gear shifting moment.

[0123] In this embodiment, the prediction determination matrix is a matrix used to analyze and determine whether each gear shifting moment of the transmission within a preset time period before the current moment is a predicted fault gear shifting moment or a predicted normal gear shifting moment.

[0124] In this embodiment, the spectral radius of the prediction decision matrix is the maximum value of the modulus (ie, absolute value) of all eigenvalues of the prediction decision matrix.

[0125] In this embodiment, the preset spectrum radius threshold is a preset spectrum radius threshold used to determine whether each gear shifting moment of the transmission within a preset time period before the current moment is a predicted fault gear shifting moment.

[0126] The beneficial effect of the above technology is: based on the characterization column matrix of all gear shifting moments of the gearbox in the preset time period before the current moment, all predicted faulty gear shifting moments and all predicted normal gear shifting moments of the gearbox in the preset time period before the current moment are obtained, and the gear shifting moments of the gearbox that may have faults and those that do not have faults are screened out from all gear shifting moments of the gearbox in the preset time period before the current moment.

[0127] Example 7:

[0128] Based on Example 4, the engine transmission early warning method, S4: based on all predicted fault shifting moments and all predicted normal shifting moments of the transmission within a preset time period before the current moment, obtaining a warning judgment value of the transmission at the current moment, and based on the warning judgment value of the transmission at the current moment, obtaining a monitoring judgment result of the transmission at the current moment, including:

[0129] The predicted fault shift moment with the shortest time interval between the current moment and all predicted fault shift moments of the transmission within a preset time period before the current moment is used as the reference fault shift moment of the transmission at the current moment; and the predicted normal shift moment with the shortest time interval between the current moment and all predicted normal shift moments of the transmission within a preset time period before the current moment is used as the reference normal shift moment of the transmission at the current moment;

[0130] Based on the reference fault shifting time and the reference normal shifting time of the gearbox at the current moment, the early warning judgment value of the gearbox at the current moment is obtained, which is:

[0131]

[0132] Among them, δ is the warning judgment value of the gearbox at the current moment, max ( α2,β2,γ 2) for ( α2, β2, γ2), α2 is the gear shift performance evaluation value of the gearbox at the reference fault shift moment at the current moment, β2 is the gear shift impact evaluation value of the gearbox at the reference fault shift moment at the current moment, γ2 is the gear shift smoothness evaluation value of the gearbox at the reference fault shift moment at the current moment, max ( α0,β0,γ 0) is (α0,β0,γ 0) , α0 is the average of the gear-entry performance evaluation values of the gearbox at all gear shifting moments in the preset time period before the current moment, β0 is the average of the gear-shift shock evaluation values of the gearbox at all gear shifting moments in the preset time period before the current moment, γ0 is the average of the gear-shift smoothness evaluation values of the gearbox at all gear shifting moments in the preset time period before the current moment, n1 is the number of all predicted normal gear shifting moments of the gearbox in the preset time period before the current moment, n2 is the number of all predicted fault gear shifting moments of the gearbox in the preset time period before the current moment, α1 is the gear-entry performance evaluation value of the gearbox at the reference normal gear shifting moment at the current moment, β1 is the gear-shift shock evaluation value of the gearbox at the reference normal gear shifting moment at the current moment, γ1 is the gear-shift smoothness evaluation value of the gearbox at the reference normal gear shifting moment at the current moment, ln is the natural logarithm, and the natural constant e is 2.718;

[0133] If the warning judgment value of the gearbox at the current moment is greater than the preset warning judgment threshold, a warning will be required as the monitoring and judgment result of the gearbox at the current moment; otherwise, no warning will be required as the monitoring and judgment result of the gearbox at the current moment.

[0134] In this embodiment, the preset early warning judgment threshold is a pre-set early warning judgment value threshold used to obtain the monitoring judgment result of the gearbox at the current moment.

[0135] The beneficial effects of the above technology are: based on all predicted fault shifting moments and all predicted normal shifting moments of the gearbox in a preset time period before the current moment, the early warning judgment value of the gearbox at the current moment is obtained, which realizes the quantification of whether the operation status of the gearbox at the current moment requires an early warning, and based on the early warning judgment value of the gearbox at the current moment, the monitoring judgment result of the gearbox at the current moment is obtained.

[0136] Example 8:

[0137] Based on Example 1, the engine transmission warning method, S5: based on the monitoring and judgment results of the engine and the monitoring and judgment results of the transmission at the current moment, obtaining the engine transmission warning result at the current moment, includes:

[0138] When the monitoring judgment result of the engine or transmission at the current moment is that an early warning is required, the early warning requirement is regarded as the engine and transmission early warning result at the current moment.

[0139] The beneficial effects of the above technology are: based on the monitoring and judgment results of the engine at the current moment and the monitoring and judgment results of the transmission at the current moment, the engine and transmission early warning results at the current moment are obtained, thereby achieving more comprehensive and accurate engine and transmission early warning results, which is conducive to timely detection of potential fault problems of the transmission and engine, thereby improving the reliability and safety of the equipment.

[0140] Example 9:

[0141] The present invention provides an engine transmission warning system for executing any one of the engine transmission warning methods in embodiments 1 to 8, referring to Figure 2 ,include:

[0142] A first judgment module is used to obtain a monitoring judgment result of the engine at the current moment based on all types of monitoring parameters of the engine at each moment in a preset time period before the current moment;

[0143] An evaluation module, configured to obtain a gear shift performance evaluation value, a gear shift impact evaluation value, and a gear shift smoothness evaluation value of the gearbox at the current moment based on all gear shift monitoring information of the gearbox at all gear shift moments within a preset time period before the current moment;

[0144] an analysis module for obtaining a characterization column matrix of each gear shift moment of the gearbox within the preset time period before the current moment based on the gear entry performance evaluation values, gear shift shock evaluation values, and gear shift smoothness evaluation values of all gear shift moments of the gearbox within the preset time period before the current moment, and obtaining all predicted faulty gear shift moments and all predicted normal gear shift moments of the gearbox within the preset time period before the current moment based on the characterization column matrix of all gear shift moments of the gearbox within the preset time period before the current moment;

[0145] a second judgment module, configured to obtain a warning judgment value of the transmission at the current moment based on all predicted fault shift moments and all predicted normal shift moments of the transmission within a preset time period before the current moment, and obtain a monitoring judgment result of the transmission at the current moment based on the warning judgment value of the transmission at the current moment;

[0146] The early warning module is used to obtain the engine and transmission early warning result at the current moment based on the monitoring and judgment result of the engine and the monitoring and judgment result of the transmission at the current moment.

[0147] The beneficial effects of the above technology are: according to all the gear shift monitoring information of the gearbox at all the gear shifting moments in the preset time period before the current moment, the gear shifting performance evaluation value, the gear shifting impact evaluation value and the gear shifting smoothness evaluation value of the gearbox at the current moment are obtained, and the smoothness and efficiency of the gearbox in the gear shifting process at the current moment, the degree of abnormal impact and the smoothness of power transmission are quantified respectively, and then the characterization column matrix of each gear shifting moment of the gearbox in the preset time period before the current moment is determined, which is convenient for the subsequent prediction of faulty gear shifting moments and the prediction of normal gear shifting moments. According to the characterization column matrix of all the gear shifting moments of the gearbox in the preset time period before the current moment, all the predicted faulty gear shifting moments and all the predicted normal gear shifting moments of the gearbox in the preset time period before the current moment are obtained. At this moment, it is realized to screen out the predicted gear shift moments with possible and non-faulty gearboxes from all gear shift moments of the gearbox within a preset time period before the current moment, and then obtain the early warning judgment value of the gearbox at the current moment, and obtain the monitoring judgment result of the gearbox at the current moment based on the early warning judgment value of the gearbox at the current moment, and then obtain the engine gearbox early warning result at the current moment based on the monitoring judgment result of the engine at the current moment and the monitoring judgment result of the gearbox at the current moment, and realize accurate quantification of whether the operation status of the gearbox at the current moment needs to be warned, and then realize obtaining more comprehensive and accurate engine gearbox early warning results, which is conducive to timely discovery of potential fault problems of the gearbox and engine, thereby improving the reliability and safety of the equipment.

[0148] Example 10:

[0149] The present invention provides an intelligent connected vehicle, which adopts the engine and transmission warning system as described in Example 9.

[0150] The beneficial effect of the above technology is that the present invention provides an intelligent connected vehicle that can be used to obtain comprehensive and accurate engine and transmission warning results.

[0151] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention, and the present invention is also intended to include these changes and modifications.

Claims

1. An engine transmission early warning method, characterized in that: include: S1: Obtaining a monitoring judgment result of the engine at the current moment based on all monitoring parameters of the engine at each moment in a preset time period before the current moment; S2: Based on all gear shift monitoring information of the gearbox at all gear shift moments within a preset time period before the current moment, obtaining a gear shift performance evaluation value, a gear shift impact evaluation value, and a gear shift smoothness evaluation value of the gearbox at the current moment; S3: Based on the shift performance evaluation values, shift shock evaluation values, and shift smoothness evaluation values of all shift moments of the transmission within a preset time period before the current moment, obtaining a characterization column matrix of each shift moment of the transmission within the preset time period before the current moment, and based on the characterization column matrix of all shift moments of the transmission within the preset time period before the current moment, obtaining all predicted faulty shift moments and all predicted normal shift moments of the transmission within the preset time period before the current moment; S4: obtaining a warning judgment value of the transmission at the current moment based on all predicted fault shifting moments and all predicted normal shifting moments of the transmission within a preset time period before the current moment, and obtaining a monitoring judgment result of the transmission at the current moment based on the warning judgment value of the transmission at the current moment; S5: Based on the monitoring and judgment results of the engine and the transmission at the current moment, obtain the engine and transmission warning results at the current moment.

2. The engine transmission early warning method according to claim 1, characterized in that: S1: Based on all monitoring parameters of the engine at each moment in a preset time period before the current moment, obtain the monitoring judgment result of the engine at the current moment, including: Obtain all monitoring parameters of the engine at each moment in a preset time period before the current moment, where all monitoring parameters include vibration monitoring parameters, oil pressure monitoring parameters, and coolant temperature monitoring parameters; The absolute value of the difference between the mean value of each type of monitoring parameter of the engine at all times within a preset time period before the current time and the corresponding type of monitoring parameter of the engine at the current time is regarded as the fluctuation difference of the corresponding type of monitoring parameter of the engine at the current time; The quotient of the fluctuation difference of each type of monitoring parameter of the engine at the current moment and the standard deviation of each type of monitoring parameter of the engine at all moments in a preset time period before the current moment is used as the early warning coefficient of the corresponding type of monitoring parameter of the engine at the current moment; Determine whether, among all types of monitoring parameters of the engine at the current moment, there is at least one type of monitoring parameter whose warning coefficient is greater than a preset value. If so, a warning will be required as the monitoring judgment result of the engine at the current moment; otherwise, no warning will be required as the monitoring judgment result of the engine at the current moment.

3. The engine transmission warning method according to claim 1, characterized in that: S2: Based on all gear shift monitoring information of the gearbox at all gear shift moments within a preset time period before the current moment, obtain the gear shift performance evaluation value, gear shift impact evaluation value, and gear shift smoothness evaluation value of the gearbox at the current moment, including: The moment when the gearbox starts shifting in each gear shifting process within the preset time period before the current moment is regarded as the gear shifting moment of the gearbox within the preset time period before the current moment; Obtaining all gear shift monitoring information of the transmission at all gear shift moments within a preset time period before the current moment, wherein all gear shift monitoring information includes gear entry performance information, gear shift impact information, and gear shift smoothness information, wherein the gear entry performance information includes a gear entry time value and a gear entry acceleration variable value, the gear shift impact information includes a vibration frequency value and a vibration variable value, and the gear shift smoothness information includes a gearbox speed value and a vehicle speed value; The vibration frequency value is the value of the vibration frequency of the gearbox when the gear shift is completed during the gear shift process corresponding to each gear shift moment; The vibration variable value is the value of the change in the vibration frequency of the gearbox when it shifts from one gear to another during the gear shifting process corresponding to each gear shifting moment. Based on all the gear shift monitoring information of the gearbox at all the gear shift moments in a preset time period before the current moment, the gear shift performance evaluation value, gear shift impact evaluation value and gear shift smoothness evaluation value of the gearbox at the current moment are obtained.

4. The engine transmission warning method according to claim 3, characterized in that: Based on all gear shift monitoring information of the gearbox at all gear shift moments within a preset time period before the current moment, the gear shift performance evaluation value, gear shift impact evaluation value, and gear shift smoothness evaluation value of the gearbox at the current moment are obtained, including: Obtaining, based on all types of gear-entry performance information, all types of gear-shift impact information, and all types of gear-shift smoothness information at all gear-shift moments of the gearbox within a preset time period before the current moment, a fluctuation coefficient of all types of gear-entry performance information, a fluctuation coefficient of all types of gear-shift impact information, and a fluctuation coefficient of all types of gear-shift smoothness information at all gear-shift moments of the gearbox within the preset time period before the current moment; The sum of the fluctuation coefficients of all types of gear-entry performance information of the gearbox at each gear shifting moment in a preset time period before the current moment is used as the gear-entry performance evaluation value of the gearbox at the corresponding gear shifting moment in the preset time period before the current moment, and the average of the gear-entry performance evaluation values of all gear shifting moments in the preset time period before the current moment is used as the gear-entry performance evaluation value of the gearbox at the current moment; The sum of the fluctuation coefficients of all types of gear shift shock information at each gear shift moment of the gearbox within a preset time period before the current moment is used as the gear shift shock evaluation value of the gearbox at the corresponding gear shift moment within the preset time period before the current moment, and the average of the gear shift shock evaluation values of all gear shift moments of the gearbox within the preset time period before the current moment is used as the gear shift shock evaluation value of the gearbox at the current moment; If the fluctuation coefficients of all types of gear shifting smoothness information of the gearbox at each gear shifting moment in the preset time period before the current moment are not greater than the preset fluctuation coefficient threshold, the corresponding gear shifting moment of the gearbox in the preset time period before the current moment is regarded as the stable moment of the gearbox in the preset time period before the current moment, and the quotient between the number of all gear shifting moments of the gearbox in the preset time period before the current moment and the number of all stable moments of the gearbox in the preset time period before the current moment is regarded as the gear shifting smoothness evaluation value of the gearbox at the current moment.

5. The engine transmission warning method according to claim 1, characterized in that: Based on the gear shift performance evaluation values, gear shift shock evaluation values, and gear shift smoothness evaluation values of all gear shift moments of the gearbox in the preset time period before the current moment, a characterization column matrix of each gear shift moment of the gearbox in the preset time period before the current moment is obtained, including: Obtain all types of evaluation values of the transmission at all gear shift moments within a preset time period before the current moment, where all types of evaluation values include gear entry performance evaluation value, gear shift impact evaluation value, and gear shift smoothness evaluation value; The quotient of each category evaluation value of each gear shift moment of the gearbox in the preset time period before the current moment and the average of the corresponding category evaluation values of all gear shift moments of the gearbox in the preset time period before the current moment is used as the ranking degree of the corresponding category evaluation value of the gearbox corresponding to the gear shift moment in the preset time period before the current moment; Sorting all the class evaluation values of each gear shifting moment of the gearbox within a preset time period before the current moment in descending order of the sorting degree, obtaining a sorting result of all the class evaluation values of each gear shifting moment of the gearbox within the preset time period before the current moment, and obtaining a first class evaluation value, a second class evaluation value, and a third class evaluation value of each gear shifting moment of the gearbox within the preset time period before the current moment based on the sorting result of all the class evaluation values of each gear shifting moment of the gearbox within the preset time period before the current moment; Based on the first evaluation value, the second evaluation value and the third evaluation value of each gear shifting moment of the gearbox in the preset time period before the current moment, a characterization column matrix corresponding to the gear shifting moment of the gearbox in the preset time period before the current moment is obtained.

6. The engine transmission warning method according to claim 5, characterized in that: Based on the characterization column matrix of all gear shifting moments of the gearbox in the preset time period before the current moment, all predicted fault gear shifting moments and all predicted normal gear shifting moments of the gearbox in the preset time period before the current moment are obtained, including: The mean of each type of evaluation values of the gearbox at all gear shifting moments within the preset time period before the current moment is regarded as the constructed mean of the corresponding type of evaluation values of the gearbox within the preset time period before the current moment, and the constructed mean corresponding to the first type of evaluation value of each gear shifting moment of the gearbox within the preset time period before the current moment is regarded as the first matrix element of the gearbox corresponding to the gear shifting moment within the preset time period before the current moment, the constructed mean corresponding to the second type of evaluation value of each gear shifting moment of the gearbox within the preset time period before the current moment is regarded as the second matrix element of the gearbox corresponding to the gear shifting moment within the preset time period before the current moment, and the constructed mean corresponding to the third type of evaluation value of each gear shifting moment of the gearbox within the preset time period before the current moment is regarded as the third matrix element of the gearbox corresponding to the gear shifting moment within the preset time period before the current moment; Based on the first matrix element, the second matrix element, and the third matrix element of each gear shifting moment of the gearbox within the preset time period before the current moment, a representation row matrix corresponding to the gear shifting moment of the gearbox within the preset time period before the current moment is obtained, and the representation column matrix and the representation row matrix of each gear shifting moment of the gearbox within the preset time period before the current moment are matrix-multiplied to obtain a prediction determination matrix for each gear shifting moment of the gearbox within the preset time period before the current moment; If the spectral radius of the prediction judgment matrix of each gear shifting moment of the transmission within the preset time period before the current moment is greater than the preset spectral radius threshold, the gear shifting moment corresponding to the gearbox within the preset time period before the current moment is regarded as the predicted faulty gear shifting moment; otherwise, the gear shifting moment corresponding to the gearbox within the preset time period before the current moment is regarded as the predicted normal gear shifting moment.

7. The engine transmission warning method according to claim 4, characterized in that: S4: Based on all predicted fault shifting moments and all predicted normal shifting moments of the transmission within a preset time period before the current moment, obtaining a warning judgment value of the transmission at the current moment, and based on the warning judgment value of the transmission at the current moment, obtaining a monitoring judgment result of the transmission at the current moment, including: The predicted fault shift moment with the shortest time interval between the current moment and all predicted fault shift moments of the transmission within a preset time period before the current moment is used as the reference fault shift moment of the transmission at the current moment; and the predicted normal shift moment with the shortest time interval between the current moment and all predicted normal shift moments of the transmission within a preset time period before the current moment is used as the reference normal shift moment of the transmission at the current moment; Based on the reference fault shifting time and the reference normal shifting time of the gearbox at the current moment, the early warning judgment value of the gearbox at the current moment is obtained, which is: Among them, δ is the warning judgment value of the gearbox at the current moment, max(α2,β2,γ2) is the maximum value among (α2,β2,γ2), α2 is the gear-entry performance evaluation value of the gearbox at the reference fault shift moment at the current moment, β2 is the gear-shift shock evaluation value of the gearbox at the reference fault shift moment at the current moment, γ2 is the gear-shift smoothness evaluation value of the gearbox at the reference fault shift moment at the current moment, max(α0,β0,γ0) is the maximum value among (α0,β0,γ0), α0 is the average of the gear-entry performance evaluation values of all gear shift moments in the preset time period before the current moment, β0 is the gear-shift smoothness evaluation value of all gear shift moments in the preset time period before the current moment is the mean of the gear shift shock evaluation values at the moment, γ0 is the mean of the gear shift smoothness evaluation values of all gear shift moments of the gearbox in the preset time period before the current moment, n1 is the number of all predicted normal gear shift moments of the gearbox in the preset time period before the current moment, n2 is the number of all predicted fault gear shift moments of the gearbox in the preset time period before the current moment, α1 is the gear engagement performance evaluation value of the gearbox at the reference normal gear shift moment at the current moment, β1 is the gear shift shock evaluation value of the gearbox at the reference normal gear shift moment at the current moment, γ1 is the gear shift smoothness evaluation value of the gearbox at the reference normal gear shift moment at the current moment, ln is the natural logarithm, and the natural constant e is 2.718; If the warning judgment value of the gearbox at the current moment is greater than the preset warning judgment threshold, a warning will be required as the monitoring and judgment result of the gearbox at the current moment; otherwise, no warning will be required as the monitoring and judgment result of the gearbox at the current moment.

8. The engine transmission warning method according to claim 1, characterized in that: S5: Based on the monitoring and judgment results of the engine and the transmission at the current moment, obtaining the engine and transmission warning results at the current moment, including: When the monitoring judgment result of the engine or transmission at the current moment is that an early warning is required, the early warning requirement is regarded as the engine and transmission early warning result at the current moment.

9. An engine transmission warning system, characterized in that: An engine transmission early warning method for executing any one of claims 1 to 8, comprising: A first judgment module is used to obtain a monitoring judgment result of the engine at the current moment based on all types of monitoring parameters of the engine at each moment in a preset time period before the current moment; An evaluation module, configured to obtain a gear shift performance evaluation value, a gear shift impact evaluation value, and a gear shift smoothness evaluation value of the gearbox at the current moment based on all gear shift monitoring information of the gearbox at all gear shift moments within a preset time period before the current moment; an analysis module for obtaining a characterization column matrix of each gear shift moment of the gearbox within the preset time period before the current moment based on the gear entry performance evaluation values, gear shift shock evaluation values, and gear shift smoothness evaluation values of all gear shift moments of the gearbox within the preset time period before the current moment, and obtaining all predicted faulty gear shift moments and all predicted normal gear shift moments of the gearbox within the preset time period before the current moment based on the characterization column matrix of all gear shift moments of the gearbox within the preset time period before the current moment; a second judgment module, configured to obtain a warning judgment value of the transmission at the current moment based on all predicted fault shift moments and all predicted normal shift moments of the transmission within a preset time period before the current moment, and obtain a monitoring judgment result of the transmission at the current moment based on the warning judgment value of the transmission at the current moment; The early warning module is used to obtain the engine and transmission early warning result at the current moment based on the monitoring and judgment result of the engine and the monitoring and judgment result of the transmission at the current moment.

10. An intelligent connected vehicle, characterized in that: The engine transmission warning system as claimed in claim 9 is adopted.

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