CN115664762A - Method and system for detecting vehicle data consistency - Google Patents
Method and system for detecting vehicle data consistency Download PDFInfo
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Abstract
The invention discloses a method and a system for detecting vehicle data consistency, wherein actual measurement data acquisition equipment is pre-installed on a vehicle to be detected, and the method comprises the following steps: enabling a vehicle to be tested to enter a preset operation condition, acquiring a data message corresponding to a preset data type within a preset time length from an on-board T-BOX (T-BOX) of the vehicle to be tested, and acquiring a first data set according to an analysis result of the data message; acquiring a measured data set corresponding to a preset data type in a preset duration based on measured data acquisition equipment; respectively coding the first data set and the measured data set based on a preset coding rule, and generating first coded data corresponding to the first data set and second coded data corresponding to the measured data set according to a coding result; and determining a data consistency result of the vehicle to be detected according to the first coded data and the second coded data, so that the data consistency of the vehicle can be accurately detected, and the reliability of the data uploaded by the vehicle-mounted T-BOX is further ensured.
Description
Technical Field
The application relates to the technical field of vehicle networking, in particular to a method and a system for detecting vehicle data consistency.
Background
In order to realize the on-line monitoring and management of the whole vehicle, the whole vehicle at six stages of the country is required to be provided with a remote monitoring terminal device, namely a vehicle-mounted T-BOX, vehicle sensors or a built-in model of a vehicle electronic control unit are required to generate vehicle data, and the vehicle data is read by the vehicle-mounted T-BOX and is transmitted to a remote platform. In order to ensure the authenticity of the vehicle-mounted T-BOX transmission data received by the remote platform, the consistency of the actual operation parameters of the whole vehicle and the data received by the remote platform needs to be tested and authenticated.
In the prior art, only the original message of the vehicle-mounted T-BOX is analyzed and processed, and the validity of the uploaded data of the vehicle-mounted T-BOX is judged through the analyzed data, so that the reliability of the uploaded data cannot be ensured.
Therefore, how to accurately detect the consistency of the vehicle data and further ensure the reliability of the uploaded data of the vehicle-mounted T-BOX is a technical problem to be solved at present.
Disclosure of Invention
The embodiment of the invention provides a method and a system for detecting vehicle data consistency, which are used for solving the technical problem that the reliability of uploaded data of a vehicle-mounted T-BOX cannot be ensured in the prior art.
In a first aspect, a method for detecting vehicle data consistency is provided, where a measured data acquisition device is pre-installed on a vehicle to be detected, and the method includes:
enabling a vehicle to be tested to enter a preset operation condition, acquiring a data message corresponding to a preset data type within a preset time length from an on-board T-BOX (T-BOX) of the vehicle to be tested, and acquiring a first data set according to an analysis result of the data message;
acquiring a measured data set corresponding to the preset data type within the preset time length based on the measured data acquisition equipment;
respectively coding the first data set and the measured data set based on a preset coding rule, and generating first coding data corresponding to the first data set and second coding data corresponding to the measured data set according to a coding result;
and determining a data consistency result of the vehicle to be detected according to the first coded data and the second coded data.
In a second aspect, a system for detecting vehicle data consistency is provided, where a measured data obtaining device is pre-installed on a vehicle to be detected, the system includes:
the system comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for enabling a vehicle to be tested to enter a preset operation working condition, acquiring a data message corresponding to a preset data type within a preset time length from an on-board T-BOX of the vehicle to be tested, and acquiring a first data set according to an analysis result of the data message;
the second acquisition module is used for acquiring a measured data set corresponding to the preset data type within the preset duration based on the measured data acquisition equipment;
the encoding module is used for respectively encoding the first data set and the measured data set based on a preset encoding rule, and generating first encoded data corresponding to the first data set and second encoded data corresponding to the measured data set according to an encoding result;
and the determining module is used for determining a data consistency result of the vehicle to be tested according to the first encoding data and the second encoding data.
By applying the technical scheme, actual measurement data acquisition equipment is pre-installed on a vehicle to be measured, the vehicle to be measured enters a preset operation condition, a data message corresponding to a preset data type within a preset time length is acquired from an on-board T-BOX of the vehicle to be measured, and a first data set is acquired according to an analysis result of the data message; acquiring a measured data set corresponding to the preset data type within the preset time length based on the measured data acquisition equipment; respectively coding the first data set and the measured data set based on a preset coding rule, and generating first coded data corresponding to the first data set and second coded data corresponding to the measured data set according to a coding result; and determining a data consistency result of the vehicle to be tested according to the first coded data and the second coded data, so that the data consistency of the vehicle can be accurately detected, and the reliability of the data uploaded by the vehicle-mounted T-BOX is further ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart illustrating a method for detecting vehicle data consistency according to an embodiment of the invention;
FIG. 2 is a flow chart illustrating a method for detecting vehicle data consistency according to another embodiment of the invention;
fig. 3 is a schematic structural diagram illustrating a system for detecting vehicle data consistency according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a method for detecting vehicle data consistency, wherein actual measurement data acquisition equipment is pre-installed on a vehicle to be detected, and as shown in fig. 1, the method comprises the following steps:
step S101, enabling a vehicle to be tested to enter a preset operation condition, obtaining a data message corresponding to a preset data type within a preset time length from an on-board T-BOX of the vehicle to be tested, and obtaining a first data set according to an analysis result of the data message.
In this embodiment, an actual measurement data obtaining device is pre-installed on the vehicle to be measured in advance, and is used to obtain actual measurement data of the vehicle to be measured according to a preset data type.
The method comprises the following steps of enabling a vehicle to be tested to enter a preset operation condition, wherein the preset operation condition can be a condition that an engine is in a preset rotating speed or a condition that the vehicle to be tested runs under a preset road condition. In this embodiment, a communication connection with the vehicle-mounted T-BOX may be established according to an actual communication protocol between the vehicle-mounted T-BOX and the remote platform, after a vehicle to be tested enters a preset operation condition, a data message corresponding to a preset data type within a preset time period may be acquired from the vehicle-mounted T-BOX of the vehicle to be tested, and a first data set may be acquired after the data message is analyzed.
Step S102, acquiring a measured data set corresponding to the preset data type within the preset time length based on the measured data acquisition equipment.
In this embodiment, after the vehicle to be measured enters the preset operation condition, the measured data set corresponding to the preset data type within the preset duration may be obtained based on the measured data obtaining device.
In order to more accurately perform the vehicle data consistency detection, in some embodiments of the present application, the preset data types include one or more of an On-Board Diagnostics (OBD) diagnostic protocol, a fuel injector (MIL) status, a diagnostic support status, a diagnostic ready status, a vehicle identification code, a software calibration identification number, a calibration verification code, an In-Use Performance Ratio (IUPR) value, a total number of fault codes, a fault code information list, a vehicle speed, an atmospheric pressure, a maximum engine reference torque, a net engine output torque, a friction torque, an engine speed, an engine fuel flow rate, a NOx sensor output, a Selective Catalytic Reduction (SCR) inlet/outlet temperature, a Diesel Particulate Filter (DPF) differential pressure, an intake air amount, a reactant remaining amount, a fuel tank level, an engine coolant temperature, and a longitude and latitude degree.
The actual measurement data obtained by the actual measurement data obtaining equipment according to the preset data type may be in a specific mode: the OBD information comprises an OBD diagnosis protocol, an MIL state, a diagnosis support state, a diagnosis ready state, a vehicle identification code, a software calibration identification number, a calibration verification code, an IUPR value, a fault code total number and a fault code information list, and can be acquired from an OBD interface through a data line in actual measurement data acquisition equipment; the vehicle speed, the atmospheric pressure, the maximum reference torque of the engine, the net output torque of the engine, the friction torque, the rotating speed of the engine, the fuel flow of the engine, the output of a NOx sensor, the inlet/outlet temperature of an SCR (selective catalytic reduction) sensor, the pressure difference of a DPF, the air inflow, the residual amount of a reactant, the liquid level of an oil tank, the temperature of coolant of the engine and the longitude and latitude belong to real-time data of the engine, and can be acquired through PEMS vehicle-mounted emission detection equipment in actual measurement data acquisition equipment.
Step S103, coding the first data set and the measured data set respectively based on a preset coding rule, and generating first coded data corresponding to the first data set and second coded data corresponding to the measured data set according to a coding result.
In this embodiment, the first data set is encoded based on a preset encoding rule to generate first encoded data, and the measured data set is encoded based on the preset encoding rule to generate second encoded data.
In order to accurately generate the first encoded data and the second encoded data, in some embodiments of the present application, the preset encoding rule is: for data of the same data type, all data or part of data in the preset time duration are used as data to be coded, MD5 codes are generated according to single data codes of the data to be coded, combined coding is carried out according to time period information, data types and data quantity of the data to be coded and each MD5 code, and integral data codes are generated according to the result of the combined coding, wherein the single data codes are generated after preset key fields of the single data of the data to be coded are coded, and the first coded data and the second coded data belong to the integral data codes.
In this embodiment, for data of the same data type, all data in the preset duration may be used as data to be encoded, and part of the data may also be screened out from all data in the preset duration to be used as data to be encoded. The method comprises the steps of coding data to be coded by adopting two coding modes, firstly coding according to preset key fields of single data of the data to be coded to generate single data codes, then generating MD5 codes according to the single data codes, and carrying out combined coding with each MD5 code according to time period information, data types and data quantity of the data to be coded to generate integral data codes, wherein the first coded data and the second coded data belong to the integral data codes.
The preset key fields corresponding to the data of different data types are different, and optionally, the preset key fields include unique identification fields and index information fields.
A person skilled in the art may adopt other preset encoding rules according to actual needs, for example, after a single data encoding is generated, the data in the first data set and the data in the measured data set may be accumulated to obtain first encoded data and second encoded data, or the data in the first data set and the data in the measured data set may be multiplied to obtain the first encoded data and the second encoded data, and then the first encoded data and the second encoded data are accumulated, which does not affect the protection scope of the present application.
And step S104, determining a data consistency result of the vehicle to be detected according to the first coded data and the second coded data.
In this embodiment, the data consistency result of the vehicle to be measured can be determined according to the first coded data and the second coded data.
In order to determine the data consistency result of the vehicle to be tested more accurately, in some embodiments of the present application, the determining the data consistency result of the vehicle to be tested according to the first encoded data and the second encoded data specifically includes:
if the first coded data and the second coded data are in accordance with each other through comparison, determining that the data consistency result is qualified;
if the first coded data and the second coded data are inconsistent in comparison, comparing each first single data code corresponding to the first coded data with each second single data code corresponding to the second coded data respectively, and determining the proportion of the number of comparison results which are inconsistent in comparison to all comparison results;
and if the proportion is not greater than the preset threshold value, determining that the data consistency result is qualified, otherwise, determining that the data consistency result is unqualified.
In this embodiment, if the first encoded data and the second encoded data are identical in comparison, it is indicated that the data in the first data set and the data in the actual measurement data set are completely identical, and the data uploaded by the vehicle-mounted T-BOX is the actual measurement data.
The method comprises the steps that vehicle data are generated by a measuring principle of a sensor of a vehicle to be measured or a built-in model of a vehicle electronic control unit, measuring precision and production consistency of a product-level sensor are influenced by factors, measured data of the sensor of the vehicle to be measured deviate from measured values, errors or packet loss may be generated in the data transmission process, so that first coded data and second coded data are inconsistent in comparison, if the first coded data and the second coded data are inconsistent in comparison, single coded data need to be continuously compared, each first single data code corresponding to the first coded data and each second single data code corresponding to the second coded data are respectively compared, the number of the inconsistent comparison results is determined to account for the proportion of all the comparison results, if the proportion is not larger than a preset threshold value, the data consistency result is determined to be qualified, and if the data consistency result is determined to be unqualified.
It should be noted that the scheme of the above embodiment is only one specific implementation scheme proposed in the present application, and other ways of determining the data consistency result of the vehicle to be tested according to the first encoded data and the second encoded data all belong to the protection scope of the present application.
In order to facilitate a user to know abnormal data in the first data set, in some embodiments of the present application, after respectively comparing each first single data code corresponding to the first encoded data with each second single data code corresponding to the second encoded data, the method further includes:
determining each abnormal single data code according to the comparison result with inconsistent comparison;
and determining abnormal data in the first data set according to key fields corresponding to the abnormal single data codes, and displaying the abnormal data at the front end.
In this embodiment, the single data code may be converted into a preset key field, an abnormal single data code having an abnormality may be determined according to a comparison result that is inconsistent with the comparison result, and then abnormal data in the first data set may be determined according to the key field converted from each abnormal single data code, and the abnormal data may be displayed at the front end.
In order to enable the user to accurately know the data consistency result, in some embodiments of the present application, after determining the data consistency result of the vehicle to be tested according to the first coded data and the second coded data, the method further includes:
and displaying the data consistency result at the front end.
By applying the technical scheme, actual measurement data acquisition equipment is pre-installed on a vehicle to be measured, the vehicle to be measured enters a preset operation condition, a data message corresponding to a preset data type within a preset duration is acquired from an on-board T-BOX of the vehicle to be measured, and a first data set is acquired according to an analysis result of the data message; acquiring a measured data set corresponding to the preset data type within the preset time length based on the measured data acquisition equipment; respectively coding the first data set and the measured data set based on a preset coding rule, and generating first coded data corresponding to the first data set and second coded data corresponding to the measured data set according to a coding result; and determining a data consistency result of the vehicle to be tested according to the first coded data and the second coded data, so that the data consistency of the vehicle can be accurately detected, and the reliability of the data uploaded by the vehicle-mounted T-BOX is further ensured.
In order to further illustrate the technical idea of the present invention, the technical solution of the present invention will now be described with reference to specific application scenarios.
The embodiment of the application provides a method for detecting vehicle data consistency, wherein actual measurement data acquisition equipment is pre-installed on a vehicle to be detected, and as shown in fig. 2, the method comprises the following steps:
step S201 starts.
Step S202, a first data set is obtained from the vehicle T-BOX, and first coded data is generated.
In this step, the first data set is encoded based on a preset encoding rule to generate first encoded data.
Step S203, acquiring the measured data set from the measured data acquisition device, and generating second encoded data.
In this step, the measured data set is encoded based on a preset encoding rule to generate second encoding data.
Step S204 is performed to determine whether the first encoded data is consistent with the second encoded data, if so, step S205 is performed, otherwise, step S206 is performed.
In step S205, the data consistency result is determined to be qualified, and step S212 is executed.
Step S206, comparing the first single data codes with the second single data codes, and executing steps S207 and S210.
In this step, each first single data code corresponding to the first encoded data is compared with each second single data code corresponding to the second encoded data.
Step S207, determining the proportion of the comparison results with inconsistent comparison.
In this step, the number of the comparison results with inconsistent comparison is determined to account for the proportion of all the comparison results.
In step S208, if the ratio is not greater than the preset threshold, step S205 is executed, otherwise step S209 is executed.
In step S209, the data consistency result is determined to be not qualified, and step S212 is executed.
And step S210, determining each abnormal single data code according to the comparison result with inconsistent comparison.
And step S211, determining abnormal data and displaying the abnormal data at the front end.
In this step, the abnormal data in the first data set is determined according to the key fields corresponding to the abnormal single data codes, and the abnormal data is displayed at the front end.
Step S212, the data consistency result is displayed at the front end.
Step S213 ends.
The embodiment of the present application further provides a system for detecting vehicle data consistency, where actual measurement data acquisition equipment is pre-installed on a vehicle to be detected, as shown in fig. 3, the system includes:
the system comprises a first acquisition module 10, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for enabling a vehicle to be tested to enter a preset operation condition, acquiring a data message corresponding to a preset data type within a preset time length from an on-board T-BOX of the vehicle to be tested, and acquiring a first data set according to an analysis result of the data message;
a second obtaining module 20, configured to obtain, based on the measured data obtaining device, a measured data set corresponding to the preset data type within the preset time duration;
the encoding module 30 is configured to encode the first data set and the measured data set based on a preset encoding rule, and generate first encoded data corresponding to the first data set and second encoded data corresponding to the measured data set according to an encoding result;
and the determining module 40 is used for determining a data consistency result of the vehicle to be tested according to the first coded data and the second coded data.
In a specific application scenario, the preset encoding rule is as follows: for data of the same data type, all data or part of data in the preset duration is used as data to be coded, an MD5 code is generated according to a single data code of the data to be coded, combined coding is performed on the data and each MD5 code according to time period information, data types and data quantity of the data to be coded, and an overall data code is generated according to a combined coding result, wherein the single data code is generated after a preset key field of the single data of the data to be coded is coded, and the first coded data and the second coded data belong to the overall data code.
In a specific application scenario, the determining module 40 is specifically configured to:
if the first coded data and the second coded data are in accordance with each other through comparison, determining that the data consistency result is qualified;
if the first coded data and the second coded data are inconsistent in comparison, comparing each first single data code corresponding to the first coded data with each second single data code corresponding to the second coded data respectively, and determining the proportion of the number of the inconsistent comparison results in all the comparison results;
and if the proportion is not greater than the preset threshold value, determining that the data consistency result is qualified, otherwise, determining that the data consistency result is unqualified.
In a specific application scenario, the determining module 40 is further configured to:
determining each abnormal single data code according to the comparison result with inconsistent comparison;
and determining abnormal data in the first data set according to the key fields corresponding to the abnormal single data codes, and displaying the abnormal data at the front end.
In a specific application scenario, the preset data types include one or more of an OBD diagnostic protocol, an MIL status, a diagnostic support status, a diagnostic ready status, a vehicle identification code, a software calibration identification number, a calibration verification code, an IUPR value, a total number of fault codes, a fault code information list, a vehicle speed, an atmospheric pressure, a maximum reference torque of an engine, a net output torque of the engine, a friction torque, an engine speed, an engine fuel flow, an NOx sensor output, an SCR inlet/outlet temperature, a DPF differential pressure, an air intake amount, a reactant residual amount, a fuel tank liquid level, an engine coolant temperature, and a latitude and longitude.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A method for detecting vehicle data consistency is characterized in that actual measurement data acquisition equipment is pre-installed on a vehicle to be detected, and the method comprises the following steps:
enabling a vehicle to be tested to enter a preset operation condition, acquiring a data message corresponding to a preset data type within a preset time length from an on-board T-BOX (T-BOX) of the vehicle to be tested, and acquiring a first data set according to an analysis result of the data message;
acquiring a measured data set corresponding to the preset data type within the preset time length based on the measured data acquisition equipment;
respectively coding the first data set and the measured data set based on a preset coding rule, and generating first coded data corresponding to the first data set and second coded data corresponding to the measured data set according to a coding result;
and determining a data consistency result of the vehicle to be detected according to the first coded data and the second coded data.
2. The method of claim 1, wherein the predetermined encoding rule is: for data of the same data type, all data or part of data in the preset duration is used as data to be coded, an MD5 code is generated according to a single data code of the data to be coded, combined coding is performed on the data and each MD5 code according to time period information, data types and data quantity of the data to be coded, and an overall data code is generated according to a combined coding result, wherein the single data code is generated after a preset key field of the single data of the data to be coded is coded, and the first coded data and the second coded data belong to the overall data code.
3. The method according to claim 2, wherein the result of determining the data consistency of the vehicle under test from the first coded data and the second coded data is:
if the first coded data and the second coded data are in accordance with each other through comparison, determining that the data consistency result is qualified;
if the first coded data and the second coded data are inconsistent in comparison, comparing each first single data code corresponding to the first coded data with each second single data code corresponding to the second coded data respectively, and determining the proportion of the number of the inconsistent comparison results in all the comparison results;
and if the proportion is not greater than the preset threshold value, determining that the data consistency result is qualified, otherwise, determining that the data consistency result is unqualified.
4. The method of claim 3, wherein after separately comparing each first single data encoding corresponding to the first encoded data with each second single data encoding corresponding to the second encoded data, the method further comprises:
determining each abnormal single data code according to the comparison result with inconsistent comparison;
and determining abnormal data in the first data set according to the key fields corresponding to the abnormal single data codes, and displaying the abnormal data at the front end.
5. The method of claim 1, wherein the preset data types are one or more of OBD diagnostic protocol, MIL status, diagnostic support status, diagnostic ready status, vehicle identification number, software calibration identification number, calibration verification code, IUPR value, fault code total, fault code information list, vehicle speed, barometric pressure, engine maximum reference torque, engine net output torque, friction torque, engine speed, engine fuel flow, NOx sensor output, SCR inlet/outlet temperature, DPF differential pressure, air intake amount, reactant balance, fuel tank level, engine coolant temperature, latitude and longitude.
6. A system for detecting vehicle data consistency, characterized in that, a measured data acquisition device is pre-installed on a vehicle to be detected, the system comprises:
the system comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for enabling a vehicle to be tested to enter a preset operation working condition, acquiring a data message corresponding to a preset data type within a preset time length from an on-board T-BOX of the vehicle to be tested, and acquiring a first data set according to an analysis result of the data message;
the second acquisition module is used for acquiring a measured data set corresponding to the preset data type within the preset duration based on the measured data acquisition equipment;
the encoding module is used for respectively encoding the first data set and the measured data set based on a preset encoding rule, and generating first encoded data corresponding to the first data set and second encoded data corresponding to the measured data set according to an encoding result;
and the determining module is used for determining a data consistency result of the vehicle to be detected according to the first coded data and the second coded data.
7. The system of claim 6, wherein the preset encoding rule is: for data of the same data type, all data or part of data in the preset duration is used as data to be coded, an MD5 code is generated according to a single data code of the data to be coded, combined coding is performed on the data and each MD5 code according to time period information, data types and data quantity of the data to be coded, and an overall data code is generated according to a combined coding result, wherein the single data code is generated after a preset key field of the single data of the data to be coded is coded, and the first coded data and the second coded data belong to the overall data code.
8. The system of claim 7, wherein the determination module is specifically configured to:
if the first coded data and the second coded data are in accordance with each other through comparison, determining that the data consistency result is qualified;
if the first coded data and the second coded data are inconsistent in comparison, comparing each first single data code corresponding to the first coded data with each second single data code corresponding to the second coded data respectively, and determining the proportion of the number of the inconsistent comparison results in all the comparison results;
and if the proportion is not greater than the preset threshold value, determining that the data consistency result is qualified, otherwise, determining that the data consistency result is unqualified.
9. The system of claim 8, wherein the determination module is further configured to:
determining each abnormal single data code according to the comparison result with inconsistent comparison;
and determining abnormal data in the first data set according to the key fields corresponding to the abnormal single data codes, and displaying the abnormal data at the front end.
10. The system of claim 6, wherein the predetermined data types are one or more of OBD diagnostic protocol, MIL status, diagnostic support status, diagnostic ready status, vehicle identification number, software calibration identification number, calibration verification code, IUPR value, fault code total, fault code information list, vehicle speed, barometric pressure, engine maximum reference torque, engine net output torque, friction torque, engine speed, engine fuel flow, NOx sensor output, SCR inlet/outlet temperature, DPF differential pressure, air intake amount, reactant balance, fuel tank level, engine coolant temperature, latitude and longitude.
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