Vehicle power distribution real-time monitoring and diagnosis method and system, storage medium and vehicle

Abstract

Disclosed in the present invention is a vehicle power distribution real-time monitoring and diagnosis method, comprising the steps of: collecting real-vehicle data related to vehicle monitoring in real time, performing computational processing, and incorporating preset values that are set in advance, performing orchestration to form a plurality of sets of power distribution logic, and forming at least one power distribution function logic matrix on the basis of the plurality of sets of power distribution logic; determining the category of the real-vehicle data on the basis of the power distribution function logic matrix; and processing normal data and abnormal data and providing an output, comprising performing fault diagnosis on the abnormal data, determining an abnormality cause category, and performing early warning. Further disclosed in the present invention are a corresponding system, a storage medium, and a vehicle. By implementing the present invention, the power distribution operation status of the vehicle can be accurately monitored, the cause of a fault can be quickly diagnosed, and early warning and protection responses can be performed, thereby improving the power distribution safety and facilitating interaction.

Description

Vehicle power distribution real-time monitoring and diagnosis method, system, storage medium and vehicle TECHNICAL FIELD

[0001] The present application relates to the technical field of low-voltage power distribution of vehicles, in particular to a vehicle power distribution real-time monitoring and diagnosis method, system, storage medium and vehicle. BACKGROUND

[0002] In a vehicle, the low-voltage power distribution system of the whole vehicle mainly distributes power to electrical loads according to the demand through the power distribution unit and the connection circuit to realize the normal work of the electrical loads, and can timely shut down the power supply to realize the function of protecting the wire harness and the whole power distribution system in the event of abnormal conditions.

[0003] In the prior art, the intelligent power distribution system under the new electronic and electrical architecture of the current intelligent vehicle generally obtains the feedback and report of the fault state of the power distribution port through the function logic of the power distribution electronic control unit (ECU) and the vehicle controller. Generally, it only detects the current value of the power supply circuit and cannot detect the voltage drop of the power supply circuit, the temperature rise of the power supply terminal of the electrical load, and the current and voltage values of the electrical load in the key states such as starting moment, maximum steady load and rated working load. Due to the inability to completely and comprehensively monitor the low-voltage power distribution system of the vehicle, the running condition of the real vehicle power distribution system cannot be accurately mastered, so there are certain risks in the rationality of the design of the power distribution system in the prior art.

[0004] In addition, in the prior art, the fault reporting method generally uploads to the cloud, and the designer needs to log in to the website to check, the vehicle end cannot actively push the information to the user's mobile phone end, so that the user cannot check online in time; and the uploaded data also has problems such as accuracy, which needs to be handled by manual work for a long time, and the labor cost is high.

[0005] With the rapid development of intelligent vehicles, the electrical system of the whole vehicle is facing multiple challenges such as the addition of new types of electrical loads, the large number of electrical loads, complex operating conditions and dynamic signals, etc. Therefore, the function of the whole vehicle power distribution system is also highly required. Therefore, it is particularly necessary to monitor and diagnose the running parameters and state of the real vehicle low-voltage power distribution system in real time and make timely feedback and fault alarm; but the prior art has the above-mentioned many deficiencies. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a vehicle power distribution real-time monitoring and diagnosis method, system, storage medium and vehicle, which can accurately monitor the low-voltage power distribution operation of the vehicle, quickly analyze the fault cause when a fault occurs, and perform early warning and protection response, thereby improving safety and the convenience of interaction.

[0007] As an aspect of the present application, a vehicle power distribution real-time monitoring and diagnosis method is provided, which is characterized by at least including the following steps:

[0008] Real-time collection of real vehicle data;

[0009] Calculation and processing of the real vehicle data, combination with preset values, arrangement to form a plurality of power distribution logics, formation of at least one power distribution function logic matrix according to the plurality of power distribution logics, wherein each power distribution logic includes at least one determination condition and a corresponding output result;

[0010] Determination of the category of the real vehicle data according to the power distribution function logic matrix, the category being normal data or abnormal data;

[0011] Fault diagnosis of the real vehicle data determined as abnormal data, comparison and analysis according to the logic matrix corresponding to the abnormal data, determination of the abnormal reason category and early warning, the abnormal reason category being a determination condition abnormality or an output result abnormality.

[0012] Further comprising:

[0013] Pre-stored preset values, design matrix code values, and power distribution function logic matrices related to the power distribution system, wherein the preset values at least include: power distribution port current threshold values of each load, power supply terminal temperature rise allowable values of each electrical load, power supply loop voltage drop allowable values of each electrical load, theoretical current values of each electrical load in different load states, and voltage values.

[0014] The real-time collection of real vehicle data further includes:

[0015] Real-time collection of the working current, working voltage, temperature of the power supply terminal, and load state signal of each electrical load from each electrical load;

[0016] Real-time collection of the port power distribution state signal and port power distribution voltage of each electrical load connected by each power distribution ECU from each power distribution ECU;

[0017] Real-time collection of the vehicle use mode, load function request signal, power supply enable trigger signal, and environmental temperature from the vehicle controller.

[0018] The received real vehicle data is processed and combined with preset values to form a plurality of power distribution logics, and at least one power distribution function logic matrix is formed according to the plurality of power distribution logics, and further comprising:

[0019] The power supply terminal temperature rise of each electrical load and the power supply loop voltage drop of the electrical load are calculated and obtained, and the working current of the electrical load, the power supply terminal temperature rise, and the power supply loop voltage drop of the electrical load are compared and checked with the corresponding preset values respectively;

[0020] The comparison and checking results are combined with the real vehicle data to form a plurality of power distribution logics, and a normal power distribution function logic matrix and an abnormal power distribution function logic matrix are formed according to the plurality of power distribution logics, each power distribution logic including one or more judgment conditions and corresponding output results;

[0021] In the normal power distribution function logic matrix, the judgment conditions are use mode and function request, and the output results are the state of the power distribution port, the size relationship between the working current of the electrical load and the corresponding power distribution port current threshold, or the size relationship between the power supply loop voltage drop of the electrical load and the corresponding power supply terminal temperature rise tolerance value;

[0022] Or, in the normal power distribution function logic matrix, the judgment conditions are use mode and power supply trigger signal value, and the output results are the state of the power distribution port, the size relationship between the working current of the electrical load and the corresponding power distribution port current threshold, or the size relationship between the power supply loop voltage drop of the electrical load and the corresponding power supply terminal temperature rise tolerance value;

[0023] In the abnormal power distribution function logic matrix, the judgment conditions are the size relationship between the working current of the electrical load and the corresponding power distribution port current threshold, or the size relationship between the power supply loop voltage drop of the electrical load and the corresponding power supply terminal temperature rise tolerance value, or the size relationship between the working current of the electrical load and its theoretical current value under different load states; the output results are the state of the power distribution port.

[0024] Further comprising:

[0025] Periodically collect the current and voltage values of each electrical load under different load states, and arrange them into corresponding current and voltage matrices, the different load states including rated working state, starting moment working state and steady state maximum load state.

[0026] According to the power distribution function logic matrix, the category of the real vehicle data is determined, including:

[0027] The matrix code of each power distribution function logic matrix is compiled, the matrix code of each element is obtained, and the matrix code is compared with the corresponding design matrix code value, and the category of the real vehicle data is determined according to the comparison result; wherein the data with the same matrix code and design matrix code value is determined as normal data; the data with inconsistent matrix code and design matrix code value is determined as abnormal data.

[0028] The real vehicle data determined as abnormal data is subjected to fault diagnosis, the corresponding logic matrix of the abnormal data is compared and analyzed, the abnormal reason category is determined and early warning is performed, including:

[0029] The matrix code with inconsistent comparison result is decoded, restored to the corresponding power distribution logic, and checked with the corresponding preset power distribution logic to determine the abnormal reason category, and the abnormal reason category is a determination condition abnormality or an output result abnormality;

[0030] After the fault diagnosis of the abnormal data, the system function corresponding to the fault is responded according to the diagnosed abnormal reason, the function recovery is performed through the signal interaction control with the vehicle controller and the power distribution ECU, and the message is actively pushed to start the corresponding protection reminding mechanism according to different abnormal reasons, so that the vehicle maintains normal power distribution function.

[0031] Further comprising:

[0032] After determining the normal data or the abnormal data, a data report template is called, the corresponding data is formed into a data report according to the format of the data report template and is output; wherein for the normal data, the current and voltage matrix data under different load states are output at the same time.

[0033] Correspondingly, another aspect of the present application also provides a vehicle power distribution real-time monitoring and diagnosis system, which is characterized at least by:

[0034] The data acquisition module is configured to acquire real vehicle data in real time;

[0035] The calculation module is configured to calculate and process the real vehicle data, combine the preset value set in advance, arrange to form a plurality of power distribution logics, form at least one power distribution function logic matrix according to the plurality of power distribution logics, and determine the category of the real vehicle data according to the power distribution function logic matrix; wherein each power distribution logic includes at least one determination condition and a corresponding output result, and the category is normal data or abnormal data;

[0036] The output processing module is configured to process and output the normal data and the abnormal data, including performing fault diagnosis on the abnormal data, comparing and analyzing the corresponding logic matrix of the abnormal data, determining the abnormal reason category and performing early warning, and the abnormal reason category is a determination condition abnormality or an output result abnormality.

[0037] Further comprising:

[0038] A storage module configured to pre-store preset values related to the power distribution system, design matrix code values, power distribution function logic matrices, and data report templates;

[0039] The preset values at least include: power distribution port current threshold values of each load, power supply terminal temperature rise allowance values of each electrical load, power supply loop voltage drop allowance values of each electrical load, and theoretical current values of each electrical load in different load states, voltage values.

[0040] The real vehicle data collected by the data collection module further includes:

[0041] Real-time working current, working voltage, power supply terminal temperature, and load state signals of each electrical load collected from each electrical load;

[0042] Real-time port power distribution state signals and port power distribution voltage of each electrical load connected to each power distribution ECU collected from each power distribution ECU;

[0043] Vehicle use mode, load function request signal, power supply enable trigger signal, and environmental temperature collected from the vehicle controller in real time.

[0044] The calculation module further includes:

[0045] The arrangement processing module is configured to calculate the power supply terminal temperature rise of each electrical load and the power supply loop voltage drop of the electrical load, compare and check the working current of the electrical load, the power supply terminal temperature rise, and the power supply loop voltage drop of the electrical load with the corresponding preset values respectively, and arrange a plurality of power distribution logics by combining the comparison and checking results with the real vehicle data, each power distribution logic including one or more judgment conditions and corresponding output results, and form normal power distribution function logic matrices and abnormal power distribution function logic matrices according to the plurality of power distribution logics;

[0046] In the normal power distribution function logic matrix, the judgment conditions are use mode and function request, and the output results are the size relationship between the state of the power distribution port, the working current of the electrical load, and the corresponding power distribution port current threshold value, or the size relationship between the power supply loop voltage drop of the electrical load and the corresponding power supply terminal temperature rise allowance value.

[0047] Alternatively, in the normal power distribution function logic matrix, the judgment conditions are use mode and power supply trigger signal value, and the output results are the size relationship between the state of the power distribution port, the working current of the electrical load, and the corresponding power distribution port current threshold value, or the size relationship between the power supply loop voltage drop of the electrical load and the corresponding power supply terminal temperature rise allowance value.

[0048] In the abnormal power distribution function logic matrix, the determination condition is a size relationship between an electrical load working current and a corresponding power distribution port current threshold, or a size relationship between a power supply loop voltage drop of the electrical load and a corresponding power supply terminal temperature rise allowable value, or a size relationship between the electrical load working current and a theoretical current value thereof in different load states; and the output result is a state of the power distribution port.

[0049] The arrangement processing module is further configured to:

[0050] The current and voltage values of each electrical load in different load states obtained by periodic acquisition are arranged into corresponding current and voltage matrices, and the different load states include a rated working state, a starting transient working state, and a steady-state maximum load state.

[0051] The calculation module further includes:

[0052] The matrix code verification module is configured to compile each power distribution function logic matrix to obtain matrix codes of elements in the matrix, and compare the matrix codes with corresponding design matrix code values;

[0053] The operation result classification module is configured to determine a category of real vehicle data according to a comparison result of the matrix code verification module; the category is normal data or abnormal data;

[0054] The data with consistent matrix codes and design matrix code values is determined as normal data, and the data with inconsistent matrix codes and design matrix code values is determined as abnormal data.

[0055] The output module further includes:

[0056] The result analysis module is configured to perform fault diagnosis on the abnormal data, decode the matrix codes with inconsistent comparison results, restore the matrix codes to corresponding power distribution logics, and check the power distribution logics with corresponding preset power distribution logics to determine an abnormal reason category;

[0057] The fault warning module is configured to, after the fault diagnosis on the abnormal data, respond to a system function corresponding to the fault according to a diagnosed abnormal reason, perform function recovery through signal interaction control with a vehicle controller and a power distribution ECU, and actively push a message to start a corresponding protection reminding mechanism according to different abnormal reasons to keep the vehicle with normal power distribution functions;

[0058] The file output module is configured to, after determining normal data or abnormal data, call a data report template in the storage module, form a data report according to a format of the data report template, and output the data report through an information push application (APP), and for normal data, simultaneously output current and voltage matrix data under different load states.

[0059] Accordingly, still another aspect of the present application also provides a computer readable storage medium having a computer program stored thereon, the computer program being executed by a processor to implement the steps of the method as described above.

[0060] Accordingly, still another aspect of the present application also provides a computer readable storage medium having a computer program stored thereon, the computer program being executed by a processor to implement the steps of the method as described above.

[0061] The embodiments of the present application have the following advantages:

[0062] The present application provides a vehicle power distribution real-time monitoring and diagnosis method, system, storage medium and vehicle. The low-voltage power distribution operation of the vehicle can be accurately and timely monitored, and the fault cause can be quickly analyzed when a fault occurs, and a warning and protection response can be performed, thereby improving the safety and the convenience of interaction.

[0063] In the embodiments of the present application, by monitoring the related important parameters of the low-voltage power distribution system power distribution end, electrical load end and connection loop in real time, and based on the function logic matrix of the vehicle power distribution system, the real-time collected data is subjected to at most three times of operation checking and logic judgment to realize accurate fault diagnosis and positioning, and the real-time state of the vehicle can be continuously monitored and diagnosed.

[0064] In the embodiments of the present application, the diagnosis result can be classified and responded, if the diagnosis result is normal, the real vehicle data is output in the expected unified format, which provides strong data reference for design personnel to design optimization, weight reduction, cost reduction and platformization, and can save the working hour cost of data sorting; if the diagnosis result is abnormal, the result is decoded and restored to the function logic matrix for logic analysis to quickly locate the specific abnormal fault cause; and the message is actively pushed to the design personnel to let them handle the fault in time, while the vehicle controller is controlled to perform correct power distribution function output, thereby ensuring the normal function of the vehicle.

[0065] In the present application, the monitored data can be stored and actively and timely pushed to the user, so that the user can timely process or conveniently check online at any time; the design and development end can master the data parameters of the power distribution system including the power distribution end, the electrical load end and the connecting loop, and timely process the faults, improving the driving safety; the implementation of the present application is of great significance for design improvement, weight reduction and cost reduction, platformization, testing and ensuring normal vehicle function. BRIEF DESCRIPTION OF DRAWINGS

[0066] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor, which still belong to the scope of the present application;

[0067] Fig. 1 is a main flow diagram of one embodiment of a vehicle power distribution real-time monitoring and diagnosis method provided by the present application;

[0068] Fig. 2 is a schematic diagram of an operating environment related to the present application;

[0069] Fig. 3 is a more detailed flow diagram of the present application;

[0070] Fig. 4 is a schematic diagram of a normal power distribution logic matrix and its matrix code related to the present application;

[0071] Fig. 5 is a schematic diagram of another normal power distribution logic matrix and its matrix code related to the present application;

[0072] Fig. 6 is a schematic diagram of an abnormal power distribution logic matrix and its matrix code related to the present application;

[0073] Fig. 7 is a schematic diagram of a current and voltage data matrix related to the present application;

[0074] Fig. 8 is an example of a diagnostic logic flowchart in the output module in one example of the present application. DETAILED DESCRIPTION

[0075] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will further describe the present application in combination with the drawings.

[0076] In order to facilitate the following description, first, the following will explain some parameters or logical descriptions in the following (taking electrical load a as an example to illustrate).

[0077] (1) Vehicle usage mode A: A takes the value of 1, indicating standby mode; A takes the value of 2, indicating comfort mode; A takes the value of 3, indicating driving mode.

[0078] (2) Load a function request signal B a : B a takes the value of 1, indicating on; B a takes the value of 2, indicating off.

[0079] (3) KL15 enable trigger signal C: C takes the value of 1, indicating that the brake switch state is switched from 0 to 1, where 0 indicates inactive and 1 indicates active; C takes the value of 2, indicating that the left front door state is switched from 0 to 1, where 0 indicates that the left front door state is closed and 1 indicates that the left front door state is open; C takes the value of 3, indicating that the main driver seat state is switched from 0 to 1, where 0 indicates that the main driver seat state is empty and 1 indicates that the main driver seat state is occupied; C takes the value of 4, indicating that the left front door / left rear door / right rear door state is switched from 1 to 0, where 0 indicates that the left front door / left rear door / right rear door state is closed and 1 indicates that the left front door / left rear door / right rear door state is open.

[0080] (4) Load a load state D a : D a takes the value of 1, indicating the rated working state; D a takes the value of 2, indicating the starting moment working state; D a takes the value of 3, indicating the steady-state maximum load working state.

[0081] (5) Power distribution ECU connected load a port power distribution state E a : E a takes the value of 1, indicating that the power distribution port is open; E a takes the value of 2, indicating that the power distribution port is closed.

[0082] (6) I a indicates the working current of the electrical load a.

[0083] (7) U ad indicates the working voltage of the electrical load a.

[0084] (8) T a indicates the temperature of the electrical load a power supply terminal (at the wire crimping position).

[0085] (9) U ap indicates the voltage of the power distribution ECU connected load a power distribution port.

[0086] (10) T0 indicates the ambient temperature of the electrical load working area.

[0087] (11), ΔT a represents the temperature rise of the power terminal of the electrical load a (at the pressure contact with the wire); ΔT a takes the value of T a the difference from T0.

[0088] (12), ΔU a represents the voltage drop of the power circuit of the electrical load a; ΔU a takes the value of U ap the difference from U ad .

[0089] (13), I ar represents the current threshold of the power distribution port of the electrical load a.

[0090] (14), ΔT as represents the temperature rise allowance of the power terminal of the electrical load a.

[0091] (15), ΔU as represents the voltage drop allowance of the power circuit of the electrical load a.

[0092] (16), I a1 represents the current value of the electrical load a in the rated working state; U a1 represents the voltage value of the electrical load a in the rated working state.

[0093] (17), I a1s represents the theoretical current value of the electrical load a in the rated working state; U a1s represents the theoretical voltage value of the electrical load a in the rated working state.

[0094] (18), I a2 represents the current value of the electrical load a at the starting moment; U a2 represents the voltage value of the electrical load a at the starting moment.

[0095] (19), I a2s represents the theoretical current value of the electrical load a at the starting moment; U a2s represents the theoretical voltage value of the electrical load a at the starting moment.

[0096] (20), I a3 represents the current value of the electrical load a in the steady-state maximum load state; U a3 represents the voltage value of the electrical load a in the steady-state maximum load state.

[0097] (21), I a3s represents the theoretical current value of the electrical load a in the steady-state maximum load state; U a3s represents the theoretical voltage value of the electrical load a in the steady-state maximum load state.

[0098] Power distribution ECU: It is responsible for distributing the vehicle's power to the electrical loads, receiving instructions from the vehicle controller to perform basic power distribution logic judgment and diagnostic processing, and can also feed back port fault status to the vehicle controller.

[0099] Vehicle controller: Responsible for vehicle control. In this system, it mainly outputs vehicle usage mode, load function requests and KL15 enable trigger signals to the data acquisition module through bus communication.

[0100] The vehicle power distribution real-time monitoring and diagnosis method of the present invention can be applied to low-voltage power distribution scenarios, but is not limited thereto. The following description uses a low-voltage power distribution scenario as an example; the principle is similar in other types of power distribution scenarios.

[0101] Figure 1 shows a schematic diagram of the main flow of an embodiment of a vehicle power distribution real-time monitoring and diagnosis method provided by the present invention. Referring also to Figures 2 to 8, in this embodiment, the method includes at least steps S10, S11, S12, and S13.

[0102] Step S10: Real-time acquisition of real-vehicle data related to monitoring from the power distribution ECU, electrical loads, and vehicle controller.

[0103] In a specific example, electrical load a is used as an example for illustration. The real-time acquired vehicle data further includes:

[0104] Real-time acquisition of the operating current I of each electrical load. a Operating voltage U ad Temperature T of the power supply terminals a and load status signal D a ;

[0105] Real-time acquisition of power distribution status signals E from the ports connected to electrical load a of each power distribution ECU. a Port power distribution voltage U ap ;

[0106] Real-time acquisition of vehicle usage mode A and load a function request signal B from the vehicle controller. a KL15 enable trigger signal C and ambient temperature T0.

[0107] As shown in Figure 2, the data acquisition module 10 is used to realize the real-time acquisition of vehicle data in step S10.

[0108] Step S11, the real vehicle data is calculated and combined with the preset value to form a plurality of power distribution logic, and at least one power distribution function logic matrix is formed according to the plurality of power distribution logic, wherein each power distribution logic includes at least one judgment condition and corresponding output result. It can be understood that the present application is aimed at power distribution logic, not a certain element or a certain event or value.

[0109] More specifically, step S11 further comprises:

[0110] The preset value related to the power distribution system, the design matrix code value, the power distribution function logic matrix and the data report template are stored in advance;

[0111] The preset value at least includes: the power distribution port current threshold I ar of each load, the power supply terminal temperature rise allowance △T as of each electrical load, the power supply loop voltage drop allowance △Ua of each electrical load, the theoretical current value of each electrical load in different load states, and the theoretical voltage value of each electrical load in different load states.

[0112] Specifically, as shown in FIG. 2, a storage module can be used to store the data input by the external user and the data monitored by the real vehicle. In a specific example, the user can input the preset value related to the power distribution system, the design matrix code value, the power distribution function logic matrix and the data report template into the storage module through a bus device or a remote programming device. The storage module supports input data change and synchronizes with other nodes in real time.

[0113] In a specific example, in step S11, the received real vehicle data is calculated and combined with the preset value to form a plurality of power distribution logic, and at least one power distribution function logic matrix is formed according to the plurality of power distribution logic, which further comprises:

[0114] The power supply loop voltage drop △Ua of the electrical load is calculated by the working voltage U ad and the port power distribution voltage U ap The power supply terminal temperature rise △T a of each electrical load is calculated by the temperature of the power supply terminal T a and the ambient temperature T0; and the working current of the electrical load, the power supply terminal temperature rise, and the power supply loop voltage of the electrical load are compared and checked with the corresponding preset value, specifically, the preset value I ar , △T as , △U as is compared and checked with the corresponding I a , △T a , △U a of the real vehicle data (first check).

[0115] The results of the comparison check are combined with real vehicle data to form a plurality of power distribution logic sets, each power distribution logic set including one or more decision conditions and corresponding output results, and a normal power distribution function logic matrix and an abnormal power distribution function logic matrix are formed according to the plurality of power distribution logic sets, which embody the functional logic of the vehicle power distribution system at the time (i.e., the results of the first check and other parameters D a , E a , A, B a , C are constructed into a functional logic matrix, which can include a power distribution function logic matrix and a voltage and current matrix under different loads);

[0116] In the normal power distribution function logic matrix, the decision conditions are the use mode A and the function request B a , and the output results are the size relationship between the state E a , the working current I a of the electrical load and the corresponding power port current threshold I ar , or the size relationship between the power supply loop voltage drop △T a of the electrical load and the corresponding power terminal temperature rise allowance △T as . As shown in FIG. 4, a schematic diagram of a normal power distribution function logic matrix (power distribution according to use mode and function request) and matrix code is shown;

[0117] Alternatively, in the normal power distribution function logic matrix, the decision conditions are the use mode and the KL15 trigger signal value C, and the output results are the size relationship between the state E a , the working current I a of the electrical load and the corresponding power port current threshold I ar , or the size relationship between the power supply loop voltage drop △T a of the electrical load and the corresponding power terminal temperature rise allowance △T as . As shown in FIG. 5, a schematic diagram of another normal power distribution function logic matrix (power distribution according to use mode and KL15 trigger signal) and matrix code is shown;

[0118] In the abnormal power distribution function logic matrix, the decision conditions are the size relationship between the working current I a of the electrical load and the corresponding power port current threshold I ar , or the size relationship between the power supply loop voltage drop △T a of the electrical load and the corresponding power terminal temperature rise allowance △T as , or the working current (I a1 , I a2 , I a3) and its theoretical current value (I a1s I a2s I a3s The size relationship between the two; the output result is the state E of the power distribution port. a Figure 6 shows a schematic diagram of an abnormal power distribution function logic matrix and matrix code.

[0119] The vehicle power distribution real-time monitoring and diagnostic method further includes:

[0120] The current and voltage values ​​of each electrical load under different load conditions are periodically collected (e.g., every 100ms) and arranged into corresponding current and voltage matrices. These different load conditions include: rated operating condition, instantaneous start-up operating condition, and steady-state maximum load condition. The structure of the current and voltage matrix can be seen in Figure 7. It is understood that the current and voltage value matrix primarily facilitates the design end in obtaining the current and voltage parameter values ​​of the load under these three key conditions, providing data reference for design optimization, platformization, or improvement of the testing system.

[0121] It is understood that, as shown in Figure 2, the calculation module can be used to implement the function of step S11 above in this embodiment of the invention. For normal power distribution function logic matrix or abnormal power distribution function logic matrix, the calculation module can obtain the matrix code corresponding to each function matrix through pre-set calculation planning and comprehensive calculation, as shown in Figures 4 to 6. For example, matrix code 1111 corresponds to matrix A with values ​​of 1 and B. a The value is 1, E a A code with a value of 1 means that when the vehicle is in Standby mode and the function request of load a is enabled, the power distribution port of the power distribution ECU connected to load a is open, and the power distribution ECU supplies power to load a normally.

[0122] Step S12: Determine the category of the actual vehicle data based on the power distribution function logic matrix. Specifically, each power distribution function logic matrix is ​​compiled to obtain the matrix code of each element (that is, the power distribution function logic matrix is ​​generated into matrix code values ​​through comprehensive calculation), and compared with the corresponding design matrix code values. The category of the actual vehicle data is determined based on the comparison result. The categories of the actual vehicle data include: normal data category and abnormal data category.

[0123] The categories of real-vehicle data determined based on the comparison results further include:

[0124] Data whose matrix code matches the design matrix code value is identified as normal data;

[0125] Data whose matrix code does not match the design matrix code value is identified as abnormal data.

[0126] In the present application, after the function matrix and the generating matrix code are completed, the calculation module will perform a second check (i.e., whether the function logic matrix code value is consistent with the preset value of the design logic code), by comparing the design logic code from the storage module, such as comparing the matrix code 1111 obtained by operating the real vehicle data with the preset value 1111', and submitting the operation result to the output module.

[0127] In a specific example, the design parameters (preset values of the function logic matrix code) are called from the storage module for the second comparison and check, to determine whether the real vehicle matrix code value is consistent with the preset matrix code value. If consistent, the collected real vehicle data is directly output to the design end for design optimization reference. If inconsistent, the third check is performed in the subsequent steps. The consistent data indicates that the real vehicle power distribution system function is running normally, and the normal real vehicle monitoring data is directly output to the design end for design optimization. The inconsistent data indicates that the real vehicle power distribution system function has a fault, which needs to be further analyzed.

[0128] In step S13, the normal data and the abnormal data are processed and output, including fault diagnosis of the abnormal data, comparison and analysis of the logic matrix corresponding to the abnormal data, determination of the abnormal reason category and pre-warning, and the abnormal reason category is a determination condition abnormality or an output result abnormality.

[0129] In step S13, the output module processes and outputs the normal data and the abnormal data respectively. The normal data here includes the data with consistent matrix code obtained by operating the real vehicle data and the preset value, and the current and voltage matrix data under different load states. For the normal data, the file output unit directly outputs to the storage module according to the preset file template for storage, and the storage module uploads and pushes the APP after signal conversion, so that the user can check at any time. The abnormal data is mainly the data with inconsistent matrix code obtained by operating the real vehicle data and the preset value. The output module decodes and analyzes the abnormal data, calls the design function logic matrix, compares and locks the specific reason of the abnormality, and starts the corresponding protection reminding mechanism according to different reasons.

[0130] In a specific example, in step S13, the abnormal data is diagnosed for fault, the logic matrix corresponding to the abnormal data is compared and analyzed, the abnormal reason category is determined and pre-warned, including:

[0131] The matrix code with inconsistent comparison results is decoded and restored to the corresponding power distribution logic matrix. The power distribution logic matrix is checked with the corresponding preset power distribution logic (i.e., the preset matrix) (third check), and the abnormal reason category is determined, which is a judgment condition abnormality or an output result abnormality. After fault diagnosis of the abnormal data, the system function corresponding to the fault is responded according to the diagnosed abnormal reason, the function is recovered through signal interaction control with the vehicle controller and the power distribution ECU, and the message is actively pushed to start the corresponding protection reminder mechanism according to different abnormal reasons, so that the vehicle maintains normal power distribution function.

[0132] In the embodiment, instead of directly outputting the fault abnormal reason through simple checking comparison, corresponding logical judgment is required after checking comparison to lock to the specific fault reason (i.e., lock the specific reason of the abnormality). In a specific example, when it is diagnosed that the judgment condition of the power distribution logic is normal but the power distribution port is mistakenly turned off, the output module will feed back the fault signal to the vehicle controller, and the vehicle controller will command the power distribution ECU to immediately distribute power to the load, and at the same time, report to the information pushing APP to remind the designer to handle the fault of the power distribution ECU port power distribution as soon as possible.

[0133] In a specific example, in step S13, the normal data and the abnormal data are processed and output, further comprising:

[0134] The storage module can output the data report and the database file template expected by the designer in addition to the design parameter preset value. Specifically, after determining the normal data or the abnormal data, a data report template is called, and the corresponding data is formed into a data report according to the format of the data report template and is output; wherein, for the normal data, the current and voltage matrix data under different load states are also output. Specifically, a large amount of data is finally output to the designer in a unified expected format through operation and arrangement.

[0135] For ease of understanding, the following describes the content of step S13 with several specific examples.

[0136] Example 1

[0137] If the normal power distribution function matrix code 1111 received by the output module is consistent with the preset value 1111', the output module outputs the normal data file. If the normal power distribution function matrix code 1111 received by the output module is inconsistent with the preset value 1111', the output module decodes and analyzes the normal power distribution function matrix code 1111, and judges which of the three conditions that A takes the value of 1, B a takes the value of 1, and E a takes the value of 1 is established or not established. If A takes the value of 1, Ba E is true, and a E is false, which means that the power distribution ECU does not normally distribute power to the load a in the case that the vehicle is in Standby and the load a function is requested to be turned on. In this case, the output processing module outputs a fault signal to the vehicle controller, and the vehicle controller commands the power distribution ECU to immediately distribute power to the load a. At the same time, the output processing module actively reports the fault reason of the power distribution ECU port to the information push APP to remind the user to troubleshoot the failure of the power distribution ECU port to the load a.

[0138] If A is true and B a E is false, and a E is true, which means that the power distribution ECU normally distributes power to the load a in the case that the vehicle is not in Standby and the load a function is not requested to be turned on. In this case, the output processing module reports abnormal information to the information push APP to actively remind the user to troubleshoot the failure of the power distribution ECU port to the load a. At the same time, the output processing module also combines the voltage and current matrix under different loads and the information obtained by analyzing the power distribution function matrix code to generate a data report according to a preset file template and uploads the data report to the user (i.e., the output module outputs a data report to the terminal device of the user according to the preset file template), and archives the data report to the storage module. The flowchart of the above diagnosis logic is shown in FIG. 8.

[0139] Example II:

[0140] If the received abnormal power distribution function matrix code 3112 is inconsistent with the preset value 3112', the output module will analyze whether △T a is greater than or equal to △T as , and E a is true or false. If the analysis result is that △T a is greater than or equal to △T as , E a is true, which means that the power distribution ECU normally distributes power to the load a in the case that the temperature rise is normal. In this case, the output module sends a fault signal to the vehicle controller, and the vehicle controller commands the power distribution ECU to immediately distribute power to the load a, and reports to the information push APP to remind the user to troubleshoot the failure of the power distribution ECU port to the load a as soon as possible.

[0141] If the analysis result is that △T a is greater than or equal to △T as , E aThe value of 2 is not established, which indicates that the terminal temperature rise exceeds the allowable value, and the power distribution port has not turned off the power output, which will bring great risk of burning line, and the output module will send a fault signal feedback to the vehicle controller, and the vehicle controller will command the power distribution ECU to immediately close the power distribution to the load a, and report to the information push APP to warn the user to check and handle the reason why the power distribution ECU port does not turn off the power output as soon as possible. Finally, the output module will arrange the parsed information into a data report according to the preset file template and upload it to the user.

[0142] Correspondingly, another aspect of the present application also provides a vehicle power distribution real-time monitoring and diagnosis system. Please refer to Fig. 2, in the embodiment, the vehicle power distribution real-time monitoring and diagnosis system 1 at least includes a data acquisition module 10, a calculation module 11 and an output processing module 12.

[0143] The data acquisition module 10 is configured to acquire real vehicle data in real time. Specifically, it acquires real vehicle data related to monitoring from the power distribution ECU, the electrical load and the vehicle controller in real time.

[0144] The calculation module 11 is configured to classify the real vehicle data and combine the preset values to form a plurality of power distribution logics, and form at least one power distribution function logic matrix according to the plurality of power distribution logics; and determine the category of the real vehicle data according to the power distribution function logic matrix; wherein each power distribution logic includes at least one judgment condition and a corresponding output result, and the category is normal data or abnormal data.

[0145] The output processing module 12 is configured to process and output the normal data and the abnormal data, including fault diagnosis of the abnormal data, comparison and analysis according to the logic matrix corresponding to the abnormal data, determination of the abnormal reason category and early warning, and the abnormal reason category is judgment condition abnormality or output result abnormality.

[0146] The vehicle power distribution real-time monitoring and diagnosis system 1 can also include:

[0147] The storage module 14 is configured to pre-store the preset values related to the power distribution system, the design matrix code value, the power distribution function logic matrix and the data report template; wherein the preset values at least include: the power distribution port current threshold I ar of each load, the power supply terminal temperature rise allowable value △T as of each electrical load, the power supply loop voltage drop allowable value △U as of each electrical load under different load states, the theoretical current value and the voltage value.

[0148] The vehicle power distribution real-time monitoring and diagnosis system 1 can further comprise an information push application (APP) module 13. The information push application (APP) module 13 is user-oriented and is a window for the vehicle to closely interact with the user. The information push application (APP) module 13 can be connected to a mobile phone, allowing the user to view or call up the power distribution system related data of the vehicle at any time, and also can timely remind the user to handle abnormal faults.

[0149] More specifically, in actual examples, the real vehicle data collected by the data collection module 10 further comprises:

[0150] the working current I of each electrical load collected in real time from each electrical load 3 a , the working voltage U ad , the temperature T of the power supply terminal a , and the load state signal D a ;

[0151] the port power distribution state signal E of each electrical load connected by each power distribution ECU 2 collected in real time from each power distribution ECU 2 a , the port power distribution voltage U ap ;

[0152] the vehicle use mode, the load function request signal, the KL15 enable trigger signal and the ambient temperature T0 collected in real time from the vehicle controller 4

[0153] The calculation module 11 further comprises a scheduling processing module 110.

[0154] The scheduling processing module 110 is configured to sort and arrange the received real vehicle data, and calculate the power supply terminal temperature rise △T of each electrical load a and the power supply circuit voltage drop △Ua of the electrical load, and then compare and check the working current, the power supply terminal temperature rise, and the power supply circuit voltage of the electrical load with the corresponding preset values, specifically, the preset values I ar , △T as , △U as are compared with the corresponding I a , △T a , △U aThe comparison and verification result is combined with the real vehicle data to form a plurality of power distribution logics, each power distribution logic including one or more determination conditions and corresponding output results, and a normal power distribution function logic matrix and an abnormal power distribution function logic matrix are formed according to the plurality of power distribution logics; in the normal power distribution function logic matrix, the determination conditions are use modes and function requests, and the output results are the state of the power distribution port, the size relationship between the working current of the electrical load and the corresponding power distribution port current threshold, or the size relationship between the power supply loop voltage drop of the electrical load and the corresponding power supply terminal temperature rise allowance; or in the normal power distribution function logic matrix, the determination conditions are use modes and KL15 trigger signal values, and the output results are the state of the power distribution port, the size relationship between the working current of the electrical load and the corresponding power distribution port current threshold, or the size relationship between the power supply loop voltage drop of the electrical load and the corresponding power supply terminal temperature rise allowance; in the abnormal power distribution function logic matrix, the determination conditions are the size relationship between the working current of the electrical load and the corresponding power distribution port current threshold, or the size relationship between the power supply loop voltage drop of the electrical load and the corresponding power supply terminal temperature rise allowance, or the size relationship between the working current of the electrical load and the theoretical current value of the electrical load under different load states; and the output results are the state of the power distribution port.

[0155] The arrangement processing module 110 is further configured to:

[0156] The current and voltage values of each electrical load under different load states, including the rated working state, the starting transient working state and the steady-state maximum load state, are arranged into corresponding current and voltage matrices.

[0157] The calculation module 11 further includes a matrix code verification module 111 and an operation result classification module 112.

[0158] The matrix code verification module 111 is configured to compile each power distribution function logic matrix to obtain the matrix code of each element and compare it with the corresponding design matrix code value.

[0159] The operation result classification module 112 is configured to determine the category of the real vehicle data according to the comparison result of the matrix code verification module; the category is normal data or abnormal data; wherein the data with consistent matrix code and design matrix code value is determined as normal data, and the data with inconsistent matrix code and design matrix code value is determined as abnormal data.

[0160] The output module 12 further includes a result analysis module 120, a fault warning module 121 and a file output module 122.

[0161] The result analysis module 120 is configured to perform fault diagnosis on the abnormal data, decode the inconsistent matrix code, restore the corresponding power distribution logic, and check the corresponding preset power distribution logic to determine the abnormal reason category. Specifically, the result analysis module 120 is mainly responsible for decoding and analyzing the abnormal result, mapping to the design logic matrix, analyzing the specific parameters causing the abnormality, and locking the fault reason. Then the abnormal result is sent to the fault protection warning unit, and the normal result is directly sent to the data file output unit.

[0162] The fault warning module 121 is configured to respond to the corresponding system function of the fault according to the diagnosed abnormal reason after the fault diagnosis on the abnormal data, recover the function through the signal interaction control with the vehicle controller and the power distribution ECU, and actively push the message to start the corresponding protection reminding mechanism according to different abnormal reasons, so that the vehicle maintains normal power distribution function. Specifically, after receiving the abnormal result sent by the operation result analysis unit, the fault warning module 121 starts the fault protection warning mechanism immediately, feeds back to the vehicle controller for power distribution protection shutdown processing, and pushes the fault information to the design end.

[0163] The file output module 122 is configured to call the data report template in the storage module after determining the normal data or the abnormal data, form a data report according to the format of the data report template, and output the data report through the information push APP 13. For normal data, the current and voltage matrix data under different load states are also output.

[0164] For more details, please refer to the foregoing description of FIGS. 1 to 8.

[0165] As another aspect of the present application, a computer readable storage medium is also provided, which stores a computer program. The computer program is executed by a processor to implement the steps of the method described in the foregoing FIGS. 1 to 8. For more details, please refer to the foregoing description of FIGS. 1 to 8.

[0166] As another aspect of the present application, a vehicle is also provided, which includes a processor and a memory. The memory stores a computer program. The computer program is executed by the processor to implement the steps of the method described in the foregoing FIGS. 1 to 8. For more details, please refer to the foregoing description of FIGS. 1 to 8.

[0167] The embodiment of the present application has the following advantages:

[0168] The application provides a vehicle power distribution real-time monitoring and diagnosis method, system, storage medium and vehicle.

[0169] In the embodiment of the application, by monitoring related important parameters of a low-voltage power distribution system power distribution end, an electrical load end and a connecting loop in real time, and based on a function logic matrix of the vehicle power distribution system, the real-time collected data is subjected to at most three times of operation checking and logic judgment to realize accurate fault diagnosis and positioning, and the real-time state of the vehicle can be continuously monitored and diagnosed.

[0170] In the embodiment of the application, the diagnosis result can be classified and responded, if the diagnosis result is normal, the real vehicle data is output in an expected unified format to provide powerful data reference for design personnel to design optimization, weight reduction, cost reduction and platformization, and the working hour cost of data sorting can be saved, if the diagnosis result is abnormal, the result is decoded and restored to a function logic matrix for logic analysis to quickly locate the specific abnormal fault cause, and the design personnel is actively pushed the message to process the fault in time, and the vehicle controller is controlled to output correct power distribution function to ensure the normal function of the vehicle.

[0171] In the application, the monitored data can be stored and actively and timely pushed to the user to enable the user to process in time or conveniently check online at any time, the design and development end can master the data parameters of the power distribution system including the power distribution end, the electrical load end and the connecting loop, and the fault can be processed in time to improve the driving safety, and the application has great significance in design improvement, weight reduction, cost reduction, platformization, testing and ensuring the normal function of the vehicle.

[0172] Those skilled in the art should understand that the embodiments of the application can be provided as a method, device or computer program product. Therefore, the application can adopt a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware aspects. Moreover, the application can adopt a computer program product in the form of one or more computer usable storage media containing computer usable program code (including but not limited to disk storage, CD-ROM, optical storage, etc.).

[0173] The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other processing device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other processing device to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions specified in the flowchart block or blocks or in conjunction with the flowcharts.

[0174] The foregoing merely illustrates the principles of the application. It will be apparent to those skilled in the art that the application can be practiced with modification and alterations, and in embodiments different from those described in the specification and drawings. Thus, the above detailed description of the application is not intended to be limiting, but should be understood to be illustrative only. The disclosure faces fully describes all the combinations and sub-combinations of features, functions, aspects, and / or properties disclosed herein.

Claims

1. A vehicle power distribution real-time monitoring and diagnosis method, comprising at least the following steps: real-time acquisition of real vehicle data; The real vehicle data is calculated and processed, and combined with preset values to form a plurality of power distribution logic groups, and at least one power distribution function logic matrix is formed according to the plurality of power distribution logic groups, wherein, each power distribution logic comprises at least one decision condition and corresponding output result; determining the category of real vehicle data according to the power distribution function logic matrix, the category being normal data or abnormal data; fault diagnosis of real vehicle data determined as abnormal data, comparative analysis according to the logic matrix corresponding to the abnormal data, determination of abnormal reason category and early warning, the abnormal reason category being decision condition abnormality or output result abnormality.

2. The method of claim 1, wherein, Further comprising: pre-storing the preset values related to the power distribution system, the design matrix code value, and the power distribution function logic matrix; wherein the preset values at least include: the power distribution port current threshold of each load, the power supply terminal temperature rise allowance of each electrical load, the power supply loop voltage drop allowance of each electrical load, the theoretical current value of each electrical load under different load states, and the voltage value.

3. The method of claim 2, wherein, The real-time acquisition of real vehicle data further comprises: real-time acquisition of the working current, working voltage, temperature of the power supply terminal, and load state signal of each electrical load from each electrical load; real-time acquisition of the port power distribution state signal and port power distribution voltage of each electrical load connected to each power distribution ECU from each power distribution ECU; real-time acquisition of the vehicle use mode, load function request signal, power supply enable trigger signal, and environmental temperature from the vehicle controller.

4. The method of claim 3, wherein, The received real vehicle data is processed and combined with the pre-set preset values to arrange a plurality of power distribution logics, and at least one power distribution function logic matrix is formed according to the plurality of power distribution logics, further comprising: calculating the power supply terminal temperature rise of each electrical load and the power supply loop voltage drop of each electrical load, and comparing and checking the working current, power supply terminal temperature rise, and power supply loop voltage drop of each electrical load with the corresponding preset values respectively; arranging a plurality of power distribution logics by combining the comparison and checking results with the real vehicle data, and forming a normal power distribution function logic matrix and an abnormal power distribution function logic matrix according to the plurality of power distribution logics, each power distribution logic comprising one or more decision conditions and corresponding output results; In the normal power distribution function logic matrix, the decision condition is the use mode and the function request, and the output result is the size relationship between the power distribution port state, the electrical load working current, and the corresponding power distribution port current threshold, or the size relationship between the power supply loop voltage drop of the electrical load and the corresponding power supply terminal temperature rise allowance; Or, in the normal power distribution function logic matrix, the decision condition is the use mode and the power supply trigger signal value, and the output result is the size relationship between the power distribution port state, the electrical load working current, and the corresponding power distribution port current threshold, or the size relationship between the power supply loop voltage drop of the electrical load and the corresponding power supply terminal temperature rise allowance. In the abnormal power distribution function logic matrix, the determination condition is a size relationship between an electrical load working current and a corresponding power distribution port current threshold, or a size relationship between a power supply loop voltage drop of the electrical load and a corresponding power terminal temperature rise allowance, or a size relationship between the electrical load working current and a theoretical current value thereof in different load states; and the output result is a state of the power distribution port.

5. The method of any one of claims 1 to 4, wherein, Further comprising: Periodically collecting electrical current and voltage values of each electrical load in different load states, including a rated working state, a starting transient working state, and a steady-state maximum load state, and arranging the values into corresponding current and voltage matrices.

6. The method of claim 5, wherein, According to the power distribution function logic matrix, the category of the real vehicle data is determined, including: Compiling each power distribution function logic matrix to obtain a matrix code of each element thereof, and comparing the matrix code with a corresponding design matrix code value, and determining the category of the real vehicle data according to a comparison result; wherein, the data with the same matrix code and design matrix code value is determined as normal data; and the data with different matrix code and design matrix code value is determined as abnormal data.

7. The method of claim 6, wherein, Performing fault diagnosis on the real vehicle data determined as abnormal data, comparing the logic matrix corresponding to the abnormal data, determining the abnormal reason category and giving a warning, including: Decoding the matrix code with inconsistent comparison result, restoring the corresponding power distribution logic, and checking the corresponding preset power distribution logic to determine the abnormal reason category, the abnormal reason category being a determination condition abnormality or an output result abnormality; After the fault diagnosis on the abnormal data, responding to the system function corresponding to the fault according to the diagnosed abnormal reason, recovering the function through signal interaction control with the vehicle controller and the power distribution ECU, and actively pushing a message to start a corresponding protection reminding mechanism according to different abnormal reasons to keep the normal power distribution function of the vehicle.

8. The method of claim 7, wherein, Further comprising: After determining the normal data or the abnormal data, calling a data report template, forming a data report according to the format of the data report template, and outputting the data report; wherein, for the normal data, the current and voltage matrix data in different load states are outputted simultaneously. 9.A vehicle power distribution real-time monitoring and diagnosis system, at least comprising: a data acquisition module configured to acquire real vehicle data in real time; a calculation module configured to calculate and process the real vehicle data, and arrange a plurality of power distribution logics by combining preset values, and form at least one power distribution function logic matrix according to the plurality of power distribution logics; and determine the category of the real vehicle data according to the power distribution function logic matrix; wherein, each power distribution logic includes at least one determination condition and a corresponding output result, and the category is normal data or abnormal data; an output processing module configured to process and output the normal data and the abnormal data, including performing fault diagnosis on the abnormal data, comparing the logic matrix corresponding to the abnormal data, determining the abnormal reason category and giving a warning, the abnormal reason category being a determination condition abnormality or an output result abnormality.

10. A computer readable storage medium having stored therein a computer program which, when executed by a processor, implements the steps of the method as claimed in any one of claims 1 to 8.

11. A vehicle comprising a processor and a memory having stored therein a computer program which, when executed by the processor, implements the steps of the method as claimed in any one of claims 1 to 8.

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