CN113031561A - Vehicle data acquisition method, transmission method, electronic device and storage medium - Google Patents
Vehicle data acquisition method, transmission method, electronic device and storage medium Download PDFInfo
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- CN113031561A CN113031561A CN202110243884.3A CN202110243884A CN113031561A CN 113031561 A CN113031561 A CN 113031561A CN 202110243884 A CN202110243884 A CN 202110243884A CN 113031561 A CN113031561 A CN 113031561A
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0221—Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
Abstract
The application is applicable to the technical field of vehicles and provides a vehicle data acquisition method, a transmission method, electronic equipment and a storage medium, wherein the vehicle data acquisition method applied to diagnostic equipment comprises the following steps: transmitting a first cycle setting command to an electronic control unit of a vehicle, wherein the first cycle setting command includes data identification information; and acquiring vehicle data which is returned by the electronic control unit in a circulating manner and corresponds to the data identification information. The embodiment of the application can efficiently acquire the vehicle data.
Description
Technical Field
The present application belongs to the field of vehicle technologies, and in particular, to a vehicle data acquisition method, a vehicle data transmission method, an electronic device, and a storage medium.
Background
Conventionally, when a vehicle is diagnosed and analyzed, a diagnostic device usually continuously reads vehicle data from an Electronic Control Unit (ECU) of the vehicle, and performs vehicle diagnosis by monitoring and analyzing a change in the vehicle data. However, the existing communication between the diagnostic device and the ECU of the vehicle is a one-time-receive mode, that is, the diagnostic device sends a data reading command once, and the ECU of the vehicle correspondingly returns a piece of vehicle data. When the diagnostic device needs to continuously read the same vehicle data (i.e., read the data stream corresponding to the vehicle data), it needs to send a data reading command to the ECU of the vehicle many times to acquire the vehicle data many times. The method for realizing vehicle data acquisition in a one-transmitting-one-receiving mode is low in efficiency.
Disclosure of Invention
In view of this, embodiments of the present application provide a vehicle data acquiring method, a vehicle data transmitting method, an electronic device, and a storage medium, so as to solve the problem of how to efficiently acquire vehicle data in the prior art.
A first aspect of an embodiment of the present application provides a vehicle data acquisition method, which is applied to a diagnostic apparatus, and includes:
transmitting a first cycle setting command to an electronic control unit of a vehicle, wherein the first cycle setting command includes data identification information;
and acquiring vehicle data which is returned by the electronic control unit in a circulating manner and corresponds to the data identification information.
Optionally, after the sending the first cycle setting command to the electronic control unit of the vehicle, the method further includes:
and sending a second circulation setting command carrying the data identification information to the electronic control unit, wherein the second circulation setting command is used for indicating the electronic control unit to stop circularly returning the vehicle data corresponding to the data identification information.
Optionally, the first cycle setting command further includes interval time information for instructing the electronic control unit to cycle an interval time of returning the vehicle data; correspondingly, the acquiring the vehicle data corresponding to the data identification information and returned by the electronic control unit in a circulating manner comprises the following steps:
and acquiring vehicle data corresponding to the data identification information, which is returned by the electronic control unit at intervals.
Optionally, the acquiring vehicle data corresponding to the data identification information and returned by the electronic control unit in a circulating manner includes:
acquiring a reply command which is returned by the electronic control unit in a circulating manner and corresponds to the first circulating setting command;
and analyzing the reply command to obtain vehicle data corresponding to the data identification information.
Optionally, after the analyzing the reply command to obtain the vehicle data corresponding to the data identification information, the method further includes:
determining a data conversion algorithm corresponding to the vehicle data according to the data identification information;
and determining a physical value of the vehicle data according to the data conversion algorithm and the vehicle data.
Optionally, before the sending the first cycle setting command to the electronic control unit of the vehicle, the method further includes:
determining data identification information corresponding to vehicle data needing to be acquired currently;
and generating the first cycle setting command according to the data identification information corresponding to the vehicle data.
Optionally, if the vehicle data that the diagnostic device needs to acquire includes at least two types of vehicle data, the generating the first cycle setting command according to the data identification information corresponding to the vehicle data includes:
generating first cycle setting commands corresponding to various vehicle data one to one according to data identification information corresponding to the various vehicle data in the at least two types of vehicle data;
correspondingly, the sending of the first cycle setting command to the electronic control unit of the vehicle comprises:
sending the respective first cycle setting commands to an electronic control unit of the vehicle.
A second aspect of an embodiment of the present application provides a vehicle data transmission method, which is applied to an electronic control unit of a vehicle, and includes:
receiving a first cycle setting command sent by the diagnostic equipment; the first loop setup command includes data identification information;
and according to the first cycle setting command, starting to cyclically acquire vehicle data corresponding to the data identification information, and sending the vehicle data to the diagnostic equipment.
Optionally, after receiving the first loop setting command sent by the diagnostic device, the method further includes:
receiving a second cycle setting command sent by the diagnostic equipment; the second loop setup command includes the data identification information;
and stopping acquiring and sending the vehicle data corresponding to the data identification information according to the second cycle setting command.
Optionally, the first cycle setting command further includes interval time information, and the starting of cycle acquisition of the vehicle data corresponding to the data identification information and sending of the vehicle data to the diagnostic device according to the first cycle setting command includes:
and according to the first cycle setting command, vehicle data corresponding to the data identification information is acquired at intervals, and the vehicle data is sent to the diagnostic equipment.
A third aspect of embodiments of the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, causes the electronic device to implement the steps of the vehicle data acquisition method according to the first aspect, or causes the electronic device to implement the steps of the vehicle data transmission method according to the second aspect.
A fourth aspect of embodiments of the present application provides a computer-readable storage medium storing a computer program that, when executed by a processor, causes an electronic device to implement the steps of the vehicle data acquisition method according to the first aspect, or causes an electronic device to implement the steps of the vehicle data transmission method according to the second aspect.
A fifth aspect of embodiments of the present application provides a computer program product, which, when run on an electronic device, causes the electronic device to implement the steps of the vehicle data acquisition method according to the first aspect, or causes the electronic device to implement the steps of the vehicle data transmission method according to the second aspect
Compared with the prior art, the embodiment of the application has the advantages that: in an embodiment of the present application, a diagnostic device sends a first cycle setting command to an electronic control unit of a vehicle, the first cycle setting command including data identification information; then, the diagnostic apparatus acquires vehicle data corresponding to the data identification information, which is cyclically returned by the electronic control unit. The diagnostic equipment can instruct the electronic control unit of the vehicle to start to circularly return the vehicle data corresponding to the data identification information only by sending the first circular setting command once, so that the diagnostic equipment can continuously acquire the vehicle data circularly returned by the electronic control unit without sending a data reading command for multiple times, and the acquisition efficiency of the vehicle data can be improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the embodiments or the description of the prior art will be briefly described below.
Fig. 1 is a schematic view of an application scenario corresponding to a vehicle data acquisition method provided in an embodiment of the present application;
FIG. 2 is a schematic flow chart illustrating a first implementation of a vehicle data acquisition method according to an embodiment of the present disclosure;
FIG. 3 is a schematic flow chart illustrating an implementation of a second vehicle data acquisition method provided by the embodiment of the present application;
fig. 4 is a schematic flow chart of implementation of a first vehicle data transmission method provided in an embodiment of the present application;
fig. 5 is a schematic flow chart illustrating an implementation of a second vehicle data transmission method according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a vehicle data acquisition device provided by an embodiment of the present application;
fig. 7 is a schematic diagram of a vehicle data transmission device according to an embodiment of the present application;
fig. 8 is a schematic diagram of an electronic device provided in an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
In order to explain the technical solution described in the present application, the following description will be given by way of specific examples.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
Conventionally, when a vehicle is diagnosed and analyzed, vehicle data is continuously read from an ECU of the vehicle by a diagnostic device, and vehicle diagnosis is performed by monitoring and analyzing a change in the vehicle data. However, the existing communication between the diagnostic device and the ECU of the vehicle is a one-time-receive mode, that is, the diagnostic device sends a data reading command once, and the ECU of the vehicle correspondingly returns a piece of vehicle data. When the diagnostic device needs to continuously read the same vehicle data (i.e., read the data stream corresponding to the vehicle data), it needs to send a data reading command to the ECU of the vehicle many times to acquire the vehicle data many times. The method for realizing vehicle data acquisition in a one-transmitting-one-receiving mode is low in efficiency. In order to solve the technical problem, an embodiment of the present application provides a vehicle data acquisition method, a transmission method, an electronic device, and a storage medium, where the vehicle data acquisition method is applied to a diagnostic device, and includes: transmitting a first cycle setting command to an electronic control unit of a vehicle, wherein the first cycle setting command includes data identification information; and acquiring vehicle data which is returned by the electronic control unit in a circulating manner and corresponds to the data identification information. The diagnostic equipment can instruct the electronic control unit of the vehicle to start to circularly return the vehicle data corresponding to the data identification information only by sending the first circular setting command once, so that the diagnostic equipment can continuously acquire the vehicle data circularly returned by the electronic control unit without sending a data reading command for multiple times, and the acquisition efficiency of the vehicle data can be improved.
Fig. 1 shows a schematic view of an application scenario corresponding to a vehicle data acquisition method provided by the present application, and includes a diagnostic device 11 and a vehicle 12, where the diagnostic device 11 establishes a communication connection with an ECU121 of the vehicle 12, so that the diagnostic device 11 can acquire vehicle data from the ECU121, and the vehicle data is monitored and analyzed, so that diagnosis of the vehicle 12 by the diagnostic device 11 can be achieved.
The first embodiment is as follows:
fig. 2 shows a schematic flowchart of a first vehicle data acquisition method provided in an embodiment of the present application, where an execution subject of the vehicle data acquisition method is a diagnostic device, and details are as follows:
in S201, a first cycle setting command is transmitted to an electronic control unit of a vehicle, wherein the first cycle setting command includes data identification information.
In the embodiment of the present application, the first cycle setting command is a command for instructing the electronic control unit ECU of the vehicle to start a cycle for returning vehicle data to the diagnostic apparatus. The first loop setup command includes data identification information, each for uniquely identifying one type of vehicle data. For a vehicle, there are a plurality of types of corresponding vehicle data (also referred to as vehicle data items), and these vehicle data items may be the rotation speed of a transmitter, the value of a certain sensor, and the like. For each item of vehicle data, there is corresponding data identification information for uniquely identifying such vehicle data. Specifically, the Data identification information may be a Data Identifier (DID). For example, the DID corresponding to the vehicle data of the type of sensor voltage may be "2002", and the DID corresponding to the vehicle data of the type of engine speed may be "2003". When the diagnosis equipment needs to continuously monitor a certain item of vehicle data of the vehicle, a first cycle setting command carrying data identification information corresponding to the item of vehicle data is sent to an ECU of the vehicle.
In S202, vehicle data corresponding to the data identification information, which is returned by the electronic control unit in a loop, is acquired.
After the diagnostic device sends the first cycle setting command to the ECU of the vehicle, the ECU of the vehicle starts to cycle back the vehicle data corresponding to the data identification information, and the cycle-back vehicle data form a data stream corresponding to the item of vehicle data. The diagnostic equipment acquires the vehicle data circularly returned by the ECU, namely acquires a data stream corresponding to the vehicle data, thereby realizing continuous monitoring and analysis of the vehicle data to obtain a corresponding vehicle diagnostic result.
In the embodiment of the application, the diagnostic equipment can instruct the electronic control unit of the vehicle to start to circularly return the vehicle data corresponding to the data identification information only by sending the first circular setting command once, so that the diagnostic equipment can continuously acquire the vehicle data circularly returned by the electronic control unit without sending a data reading command for many times, and the acquisition efficiency of the vehicle data can be improved.
Example two:
fig. 3 shows a schematic flow chart of a second vehicle data acquisition method provided in the embodiment of the present application, and the method in the embodiment is further improved based on the method described in the first embodiment, and the same parts as the first embodiment are not repeated. The vehicle data acquisition method shown in fig. 3 is detailed as follows:
in S301, a first cycle setting command is transmitted to an electronic control unit of a vehicle, wherein the first cycle setting command includes data identification information.
In S302, vehicle data corresponding to the data identification information, which is returned by the electronic control unit in a loop, is acquired.
In S303, a second loop setting command carrying the data identification information is sent to the electronic control unit, where the second loop setting command is used to instruct the electronic control unit to stop returning the vehicle data corresponding to the data identification information in a loop.
In the embodiment of the present application, the second cycle setting command is a command for instructing the ECU of the vehicle to stop returning the vehicle data corresponding to the data identification information. The data identification information corresponds to the data identification information in step S301, and is used to indicate which vehicle data, i.e., which type of vehicle data, needs to be stopped from being acquired currently. When the diagnostic device needs to stop monitoring the item of vehicle data, a second cycle setting command carrying data identification information of the item of vehicle data may be sent, thereby instructing the ECU of the vehicle to stop returning the item of vehicle data.
In one embodiment, the first loop setup command may further include a start flag, which is a flag indicating that the ECU of the vehicle loops back to the beginning of the vehicle data flow, and may be identified by a preset character, for example, "01". Correspondingly, the second loop setup command may further include a stop flag, which is a flag indicating that the ECU of the vehicle loops back to stop of the vehicle data flow, and the stop flag may be represented by another preset character distinguished from the start flag, for example, "00".
In the embodiment of the application, after the first cycle setting command is sent and the vehicle data corresponding to the data identification information returned from the ECU starts to be obtained in a cycle, the vehicle data can be accurately stopped from being obtained by sending the second cycle setting command, so that the vehicle data can be effectively stopped from being obtained in time when the diagnostic equipment does not need to continuously monitor the vehicle data, and the waste of the operation resources and the communication resources of the diagnostic equipment and the ECU is avoided.
Optionally, the first cycle setting command further includes interval time information for instructing the electronic control unit to cycle an interval time of returning the vehicle data; correspondingly, step S202 or step S302 includes:
and acquiring vehicle data corresponding to the data identification information, which is returned by the electronic control unit at intervals.
In the embodiment of the present application, the first cycle setting command in step S201 or step S301 may further include interval time information, where the interval time information is used to instruct the ECU of the vehicle to cycle back the interval time of the vehicle data, so that the ECU of the vehicle can start to cycle back the vehicle data corresponding to the data identification information multiple times according to the interval time after receiving the first cycle setting command sent by the diagnostic device. The diagnostic equipment receives the vehicle data returned by the ECU of the vehicle at intervals, so that the continuous monitoring of the vehicle data by the diagnostic equipment is realized.
For example, if the vehicle data required to be acquired by the diagnostic device is engine speed data, the first cycle setting command may be: "0 x08 FC 0005 a 220036401 FF". 08 represents the number of bytes of data after the system identification ID of the current diagnostic equipment; FC00 denotes a command number for the diagnostic device to send a request to the engine ECU of the vehicle; 05, the valid data of the first loop setup command is 5 bytes; a2 is data identification information of a loop set command indicating that the first loop set command is a command related to instructing the ECU to loop back the vehicle data; 2003, a DID corresponding to vehicle data (engine speed data) which needs to be acquired currently; information of interval 64, specifically, 64 is hexadecimal data, which corresponds to decimal digit 100, and can be used to indicate that the specified interval is 100 ms; "01" is a start flag, which is used to indicate the flow of starting to cycle back the vehicle data; the last four bytes of FF FF are invalid padding bytes. Correspondingly, the second loop setting command may be: "0 x08 FC 0005A 220036400 FF". Where 08 denotes the number of bytes of data following the current system ID, and FC00 denotes a command number for the diagnostic device to send a request to the engine ECU of the vehicle; 05, the valid data of the second loop setup command is 5 bytes; a2 is data identification information of a cycle setting command indicating that the second cycle setting command is a command related to instructing the ECU to cycle back the vehicle data; 2003, a DID corresponding to vehicle data (engine speed data) which needs to be acquired currently; interval time information is 64, and invalid information is set in the second cycle setting command; "00" is a stop flag for indicating that the flow of the vehicle data is stopped and circulated back; the last four bytes of FF FF are invalid padding bytes.
In one embodiment, the first loop setting command may further include information of the number of loops or the time period. The number of cycles is used to instruct the ECU of the vehicle to cycle back the number of times of the vehicle data, and for example, if the number of cycles is 5 times and the interval time is 100ms, the ECU of the vehicle returns the vehicle data once every 100ms until the number of times of return reaches 5 times. The information of the time period is used to instruct the ECU of the vehicle to cycle back the time period of the vehicle data, for example, if the information of the time period is: 12:00-12:30 at an interval of 100ms, the vehicle returns the vehicle data to the diagnostic device once every 100ms during the time period of 12:00-12:30, thereby realizing that the vehicle data is returned to the diagnostic device multiple times in a cycle during the time period.
In the embodiment of the application, the interval time information is set in the first cycle setting command, so that the speed of the ECU of the vehicle for circularly returning the vehicle data can be effectively controlled, and the vehicle data circularly returned by the ECU can be regularly and orderly acquired according to the interval time.
Optionally, the step S202 or the step S302 specifically includes:
acquiring a reply command which is returned by the electronic control unit in a circulating manner and corresponds to the first circulating setting command;
and analyzing the reply command to obtain vehicle data corresponding to the data identification information.
In the embodiment of the application, the ECU of the vehicle returns the vehicle data once in a complete reply command. Specifically, the diagnostic device acquires a reply command corresponding to a first cycle setting command that the ECU cyclically returns after sending the first cycle setting command to the ECU of the vehicle. The reply command includes data identification information that is identical to the first loop setup command, and includes vehicle data corresponding to the data identification information.
After the reply command is acquired every time, the vehicle data corresponding to the data identification information carried by the first cycle setting command can be acquired by analyzing the reply command.
Illustratively, the reply command may be: "0 x08 FD 00056220030255 FF". Where 08 indicates the number of data bytes after the system ID of the ECU, FD00 indicates that the return command is a return command of the engine ECU, and 2003 indicates that the return command is a return command corresponding to vehicle data (i.e., engine speed data) whose data identification information DID is 2003; 0255 indicates the current actual vehicle data, i.e. the current engine speed data. The reply command is parsed byte by byte through a preset parsing algorithm, and two bytes of data after the data identification information "2003" are determined as parsed vehicle data (i.e., "0 x 0255") corresponding to the data identification information.
In the embodiment of the application, the reply command corresponding to the first cycle setting command circularly returned by the ECU of the vehicle can be analyzed after the reply command is acquired, so that the vehicle data corresponding to the data identification information contained in the first cycle command can be accurately acquired, and the accuracy of acquiring the vehicle data is improved.
Optionally, after the analyzing the reply command to obtain the vehicle data corresponding to the data identification information, the method further includes:
determining a data conversion algorithm corresponding to the vehicle data according to the data identification information;
and determining a physical value of the vehicle data according to the data conversion algorithm and the vehicle data.
In the embodiment of the application, after the vehicle data corresponding to the data identification information in the first cycle setting command is analyzed from the reply command, the physical value corresponding to the vehicle data is further obtained, so that accurate diagnosis and analysis can be performed subsequently. Specifically, according to the data identification information included in the reply command, a local pre-stored algorithm library or a third-party pre-stored algorithm library is queried, and a data conversion algorithm corresponding to the data identification information is obtained. And then, calculating the vehicle data according to the data conversion algorithm to obtain a physical value corresponding to the vehicle data.
For example, if the data identification information DID carried in the reply command is "2003", it is determined that the vehicle data is engine speed data, and a data conversion algorithm corresponding to the engine speed data is queried from a locally pre-stored algorithm library, for example, Y ═ X1 × 256+ X2, where X1 represents a first byte 0X02 of the engine data analyzed in the reply command, X2 represents a second byte 0X55 (corresponding decimal digit 85), and Y represents a physical value corresponding to the engine data after data conversion; then, substituting the specific value '0 x 0255' of the vehicle data analyzed from the reply command into the data conversion algorithm, and calculating to obtain a corresponding Y value which is a physical value corresponding to the engine data: 02 × 256+85 — 597 (revolutions per minute).
In the embodiment of the application, after the vehicle data is acquired, a data conversion algorithm corresponding to the vehicle data can be further acquired according to the data identification information, and the physical value of the vehicle data can be accurately determined, so that rapid and accurate diagnosis and analysis can be performed subsequently.
Optionally, before step S201 or step S301, the method further includes:
determining data identification information corresponding to vehicle data needing to be acquired currently;
and generating the first cycle setting command according to the data identification information corresponding to the vehicle data.
In the embodiment of the application, before the first cycle setting command is sent, data identification information corresponding to the vehicle data which needs to be acquired currently is determined. Specifically, the type of vehicle data to be currently acquired, such as the type of engine speed data, the type of sensor data, and the like, may be determined in accordance with the diagnostic instruction after the diagnostic apparatus receives the diagnostic instruction. And then searching a pre-stored diagnosis protocol according to the type of the vehicle data, determining a DID corresponding to the type of the vehicle data, and taking the DID as data identification information corresponding to the vehicle data which needs to be acquired currently.
After data identification information corresponding to the vehicle data which needs to be acquired currently is determined, a first cycle setting command carrying the data identification information is generated according to the data identification information. Further, a first cycle setting command carrying the data identification information and the interval time information can be generated according to the preset interval time information.
Optionally, if the vehicle data that the diagnostic device needs to acquire includes at least two types of vehicle data, the generating the first cycle setting command according to the data identification information corresponding to the vehicle data includes:
generating first cycle setting commands corresponding to various vehicle data one to one according to data identification information corresponding to the various vehicle data in the at least two types of vehicle data;
correspondingly, the sending of the first cycle setting command to the electronic control unit of the vehicle comprises:
sending the respective first cycle setting commands to an electronic control unit of the vehicle.
In the embodiment of the application, if the vehicle data required to be acquired by the current diagnostic device includes two or more types of vehicle data, the data identification information corresponding to each type of vehicle data is respectively determined, and the first cycle setting command corresponding to each type of vehicle data is generated according to the data identification information corresponding to each type of vehicle data, so that the first cycle setting commands corresponding to the various types of vehicle data required to be acquired one by one are finally obtained. For example, if it is currently required to acquire both the vehicle data corresponding to the sensor voltage and the vehicle data corresponding to the engine speed, a first cycle setting command for instructing the ECU of the vehicle to start cycle acquisition of the vehicle data of the sensor voltage may be generated according to the DID "2002" corresponding to the sensor voltage; and generating a first cycle setting command for instructing the ECU of the vehicle to start cycle acquisition of vehicle data of the engine speed, based on the DID "2003" corresponding to the engine speed.
Then, the generated respective first cycle setting commands are sent to the ECU of the vehicle simultaneously or sequentially so that the ECU can cycle back a variety of vehicle data.
In the embodiment of the application, when the diagnosis device needs to monitor various vehicle data, corresponding first cycle setting commands can be accurately generated according to the data identification information corresponding to each vehicle data, and the cycle acquisition of the various vehicle data can be accurately realized by sending the first cycle setting commands.
Optionally, if the vehicle data that the diagnostic device needs to acquire includes at least two types of vehicle data, the generating the first cycle setting command according to the data identification information corresponding to the vehicle data includes:
and generating a first cycle setting command according to the data identification information respectively corresponding to the at least two types of vehicle data, wherein the first cycle setting command comprises the data identification information respectively corresponding to the at least two types of vehicle data.
In the embodiment of the application, when the vehicle data required to be acquired by the current diagnostic device includes two or more types of vehicle data, specifically, according to each data identification information corresponding to each type of vehicle data required to be acquired, a first cycle setting command simultaneously including the plurality of data identification information is generated, so that the ECU can be instructed to return the plurality of types of vehicle data at one time by sending the first cycle setting command. After the first cycle setting command is sent, various vehicle data which are respectively corresponding to the data identification information and are circularly returned by the ECU of the vehicle can be acquired.
In the embodiment of the application, when various vehicle data need to be acquired, the first cycle setting command containing the data identification information can be generated according to the data identification information corresponding to the vehicle data, so that the various vehicle data circularly returned by the ECU of the vehicle can be acquired in the subsequent process only by sending the first cycle setting command once, and the vehicle data acquisition efficiency can be improved.
Example three:
fig. 4 shows a schematic flowchart of a first vehicle data transmission method provided in an embodiment of the present application, where an execution subject of the vehicle data transmission method is an electronic control unit ECU of a vehicle, and details are as follows:
in S401, receiving a first cycle setting command sent by a diagnosis device; the first loop setup command includes data identification information.
In the embodiment of the present application, corresponding to step S201 in the first embodiment or step S301 in the second embodiment, the ECU of the vehicle receives the first loop setting command including the data identification information transmitted by the diagnostic device.
In S402, according to the first cycle setting command, cycle acquisition of vehicle data corresponding to the data identification information is started, and the vehicle data is sent to the diagnostic device.
After receiving the first cycle setting command, the ECU analyzes the first cycle setting command, and determines that the current command is a command for starting cycle acquisition of vehicle data according to the first cycle setting command; according to the data identification information of the vehicle data contained in the first cycle setting command, the type of the vehicle data which needs to be cyclically acquired currently is determined, namely the vehicle data which needs to be acquired currently is determined. And then, circularly acquiring the vehicle data of the type corresponding to the data identification information, and sending the vehicle data to the diagnostic equipment after acquiring one piece of vehicle data each time.
In the embodiment of the application, the ECU of the vehicle can return corresponding vehicle data to the diagnostic equipment for multiple times according to the first cycle setting command only by acquiring the first cycle setting command once, so that the time for the ECU of the vehicle to receive and analyze the data reading command for multiple times and required computing resources can be saved, and the corresponding vehicle data can be efficiently returned to the diagnostic equipment.
Example four:
fig. 5 shows a schematic flow chart of a second vehicle data transmission method provided in the embodiment of the present application, where the method in this embodiment is further improved on the basis of the method in the third embodiment, and details of the method that is the same as the third embodiment are omitted. The vehicle data transmission method shown in fig. 5 is described in detail as follows:
in S501, receiving a first cycle setting command sent by a diagnosis device; the first loop setup command includes data identification information.
In S502, according to the first cycle setting command, cycle acquisition of vehicle data corresponding to the data identification information is started, and the vehicle data is sent to the diagnostic device.
In S503, receiving a second cycle setting command sent by the diagnostic device; the second loop setup command includes data identification information of the vehicle data.
In the embodiment of the application, after receiving the first cycle setting command sent by the diagnostic device, the ECU may also receive a second cycle setting command sent by the diagnostic device. The second loop setup command includes data identification information, and the specific definition of the second loop setup command is the same as that of the second loop setup command in the second embodiment, and specific reference may be made to the related description of the second loop setup command in the second embodiment.
In S504, according to the second cycle setting command, the acquisition and transmission of the vehicle data corresponding to the data identification information are stopped.
After receiving the second cycle setting command, analyzing the second cycle setting command, determining that the second cycle setting command is a command for stopping circularly acquiring the vehicle data, and determining which vehicle data needs to be stopped to be acquired currently according to the data identification information of the vehicle data contained in the second cycle setting command. And then, stopping acquiring and stopping returning the vehicle data corresponding to the data identification information carried by the second cycle setting command according to the analyzed content.
In the embodiment of the application, after the vehicle data corresponding to the data identification information is cyclically acquired according to the first cyclic setting command and sent to the diagnostic equipment, the second cyclic setting command sent by the diagnostic equipment can be further received so as to accurately stop acquiring and returning the vehicle data, so that the vehicle data can be effectively stopped from being returned in time when the diagnostic equipment does not need to continuously monitor the vehicle data, and the waste of the running resources and the communication resources of the ECU is avoided.
Optionally, the first loop setting command further includes interval time information, and the step S402 or the step S502 includes:
and according to the first cycle setting command, vehicle data corresponding to the data identification information is acquired at intervals, and the vehicle data is returned to the diagnostic equipment.
In this embodiment of the application, the first loop setting command further includes information of an interval time, and then, after receiving the first loop setting command, the ECU of the vehicle analyzes the first loop setting command, and obtains vehicle data corresponding to the data identification information carried in the first loop setting command once every other interval time (for example, 100 milliseconds) according to the information of the interval time, and returns the vehicle data to the diagnostic device.
In the embodiment of the application, the interval time for circularly returning the vehicle data can be determined according to the information of the interval time of the first circularly setting command, so that the quantity and frequency of the vehicle data returned by the ECU can be further accurately and effectively controlled, and the diagnosis equipment can acquire the vehicle data with certain frequency and certain quantity as required.
Optionally, the first cycle setting command may further include information of a cycle number or a time period, the cycle number being used to instruct the ECU to cycle the number of times of acquiring and transmitting the vehicle data; the time period is used for indicating the time period that the ECU needs to continuously acquire and return the item of vehicle data, for example, if the time period is 12:00-12:30, the ECU of the vehicle returns the vehicle data to the diagnostic device in a cycle of multiple times within the time period of 12:00-12: 30.
Optionally, step S402 or step S502 described above includes:
acquiring vehicle data corresponding to the data identification information according to the first cycle setting command;
generating a reply command according to the vehicle data, wherein the reply command comprises the data identification information and the vehicle data;
and sending the reply command to the diagnostic equipment.
In the embodiment of the application, after one piece of vehicle data is acquired each time, a reply command containing the data identification information and the vehicle data is generated according to the vehicle data, and the reply command is sent to the diagnostic equipment, so that the vehicle data is returned to the diagnostic equipment. For example, if it is determined that the data identification information of the vehicle data included in the first cycle setting command is DID according to the first cycle setting command: 2003, according to the DID, the vehicle data with the DID of 2003 is determined to be the engine speed data, therefore, the engine speed data of the vehicle is obtained in a circulating mode, a corresponding return command is generated after one engine speed data is obtained, and the return command is sent to the diagnosis device. For example, the engine speed data may correspond to a reply command: "0 x08 FD 00056220030255 FF". Where 08 indicates the number of bytes of data following the system ID of the ECU, FD00 indicates that the return command is a return command of the engine ECU, and 2003 indicates that the return command is a return command corresponding to vehicle data (i.e., engine speed data) whose DID is 2003; 0255 indicates the current actual vehicle data, i.e. the current engine speed data.
In the embodiment of the application, after the vehicle data is acquired according to the data identification information, the reply command containing the data identification information and the vehicle data is generated to the diagnostic equipment, so that the diagnostic equipment can accurately analyze the data identification information and the vehicle data in the reply command by completely receiving the reply command, and accordingly the vehicle data is accurately acquired, and the accuracy of vehicle data transmission can be improved.
Alternatively, if the ECU receives at least two first cycle setting commands respectively including different data identification information or receives a first cycle setting command simultaneously including at least two data identification information in step S401 or step S501, in step S402 or step S502, various vehicle data corresponding to the respective data identification information are respectively acquired according to the respective data identification information, and the various vehicle data are simultaneously or respectively returned to the diagnostic device.
In the embodiment of the application, after receiving the plurality of first cycle setting commands respectively containing different data identification information or receiving the first cycle setting command simultaneously containing the plurality of data identification information, the ECU can respectively acquire each vehicle data according to each data identification information and return the vehicle data to the diagnostic equipment, so that the return of various different vehicle data can be realized, and the vehicle data sending efficiency is improved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Example five:
fig. 6 is a schematic structural diagram of a vehicle data acquisition device provided in an embodiment of the present application, which is applied to a diagnostic apparatus, and for convenience of explanation, only a part related to the embodiment of the present application is shown:
the vehicle data acquisition device includes: a first cycle setting command transmitting unit 61, a vehicle data acquiring unit 62. Wherein:
a first cycle setting command transmitting unit 61 for transmitting a first cycle setting command to an electronic control unit of the vehicle, wherein the first cycle setting command includes data identification information.
And a vehicle data acquisition unit 62, configured to acquire vehicle data corresponding to the data identification information, which is returned by the electronic control unit in a circulating manner.
Optionally, the vehicle data acquiring device further includes:
and the second cycle setting command sending unit is used for sending a second cycle setting command carrying the data identification information to the electronic control unit, and the second cycle setting command is used for indicating the electronic control unit to stop cyclically returning the vehicle data corresponding to the data identification information.
Optionally, the first cycle setting command further includes interval time information for instructing the electronic control unit to cycle an interval time of returning the vehicle data; correspondingly, the vehicle data acquiring unit 62 is specifically configured to acquire the vehicle data corresponding to the data identification information, which is returned by the electronic control unit at the interval time.
Optionally, the vehicle data acquiring unit 62 includes a reply command acquiring module and a parsing module:
the reply command acquisition module is used for acquiring a reply command which is returned by the electronic control unit in a circulating manner and corresponds to the first circulating setting command;
and the analysis module is used for analyzing the reply command to obtain the vehicle data corresponding to the data identification information.
Optionally, the vehicle data acquiring unit 62 further includes:
the data conversion module is used for determining a data conversion algorithm corresponding to the vehicle data according to the data identification information; and determining a physical value of the vehicle data according to the data conversion algorithm and the vehicle data.
Optionally, the vehicle data acquiring device further includes:
the data identification information determining unit is used for determining data identification information corresponding to the vehicle data which needs to be acquired currently;
and the first cycle setting command generating unit is used for generating the first cycle setting command according to the data identification information corresponding to the vehicle data.
Optionally, if the vehicle data required to be acquired by the diagnostic device includes at least two types of vehicle data, the first cycle setting command generating unit is specifically configured to generate each first cycle setting command corresponding to each type of vehicle data one to one according to data identification information corresponding to each type of vehicle data in the at least two types of vehicle data;
correspondingly, the first cycle setting command sending unit 61 is specifically configured to send each first cycle setting command to an electronic control unit of the vehicle.
Optionally, if the vehicle data required to be acquired by the diagnostic device includes at least two types of vehicle data, the first cycle setting command generating unit is specifically configured to generate a first cycle setting command according to data identification information corresponding to the at least two types of vehicle data, where the first cycle setting command includes each data identification information corresponding to the at least two types of vehicle data.
Fig. 7 is a schematic structural diagram of a vehicle data transmission device provided in an embodiment of the present application, which is applied to an electronic control unit of a vehicle, and for convenience of explanation, only a part related to the embodiment of the present application is shown:
the vehicle data transmission device includes: a first cycle setting command receiving unit 71, a vehicle data transmitting unit 72. Wherein:
a first cycle setting command receiving unit 71 for receiving a first cycle setting command transmitted by the diagnostic apparatus; the first cycle setting command comprises a starting identifier and data identifier information of vehicle data;
and a vehicle data sending unit 72, configured to start to cyclically obtain vehicle data corresponding to the data identification information according to the first cycle setting command, and send the vehicle data to the diagnostic device.
Optionally, the vehicle data acquiring device further includes:
a second cycle setting command receiving unit for receiving a second cycle setting command sent by the diagnostic device; the second loop setup command includes the data identification information;
and the stopping unit is used for stopping acquiring and sending the vehicle data corresponding to the data identification information according to the second cycle setting command.
Optionally, the first cycle setting command further includes information of an interval time, and correspondingly, the vehicle data returning unit 72 is specifically configured to obtain vehicle data corresponding to the data identification information at intervals according to the first cycle setting command, and send the vehicle data to the diagnostic device.
Optionally, the vehicle data sending unit 72 is specifically configured to obtain, according to the first cycle setting command, vehicle data corresponding to the data identification information; generating a reply command according to the vehicle data, wherein the reply command comprises the data identification information and the vehicle data; and sending the reply command to the diagnostic equipment.
It should be noted that, for the information interaction, execution process, and other contents between the above-mentioned devices/units, the specific functions and technical effects thereof are based on the same concept as those of the embodiment of the method of the present application, and specific reference may be made to the part of the embodiment of the method, which is not described herein again.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Example six:
fig. 8 is a schematic diagram of an electronic device provided in an embodiment of the present application. As shown in fig. 8, the electronic apparatus 8 of this embodiment includes: a processor 80, a memory 81 and a computer program 82, such as a vehicle data acquisition program or a vehicle data transmission program, stored in said memory 81 and operable on said processor 80. The processor 80, when executing the computer program 82, implements the steps in each of the vehicle data acquisition method embodiments or vehicle data transmission method embodiments described above, such as steps S201 to S202 shown in fig. 2, or such as steps S401 to S402 shown in fig. 4. Alternatively, the processor 80 executes the computer program 82 to realize the functions of the modules/units in the device embodiments described above, such as the functions of the first cycle setting command transmitting unit 61 and the vehicle data acquiring unit 62 shown in fig. 4, or such as the functions of the first cycle setting command receiving unit 71 to the vehicle data transmitting unit 72 shown in fig. 5.
Illustratively, the computer program 82 may be partitioned into one or more modules/units that are stored in the memory 81 and executed by the processor 80 to accomplish the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 82 in the electronic device 8.
The electronic device 8 may be a diagnostic device, an electronic control unit of a vehicle, a vehicle-mounted computer, or other computing device. The electronic device may include, but is not limited to, a processor 80, a memory 81. Those skilled in the art will appreciate that fig. 8 is merely an example of an electronic device 8 and does not constitute a limitation of the electronic device 8 and may include more or fewer components than shown, or some components may be combined, or different components, e.g., the electronic device may also include input-output devices, network access devices, buses, etc.
The Processor 80 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage 81 may be an internal storage unit of the electronic device 8, such as a hard disk or a memory of the electronic device 8. The memory 81 may also be an external storage device of the electronic device 8, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the electronic device 8. Further, the memory 81 may also include both an internal storage unit and an external storage device of the electronic device 8. The memory 81 is used for storing the computer program and other programs and data required by the electronic device. The memory 81 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/electronic device and method may be implemented in other ways. For example, the above-described apparatus/electronic device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be realized by a computer program, which can be stored in a computer-readable storage medium and can realize the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art 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 substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A vehicle data acquisition method, characterized in that the method is applied to a diagnostic apparatus, comprising:
transmitting a first cycle setting command to an electronic control unit of a vehicle, wherein the first cycle setting command includes data identification information;
and acquiring vehicle data which is returned by the electronic control unit in a circulating manner and corresponds to the data identification information.
2. The vehicle data acquisition method according to claim 1, further comprising, after said sending the first cycle setting command to an electronic control unit of the vehicle:
and sending a second circulation setting command carrying the data identification information to the electronic control unit, wherein the second circulation setting command is used for indicating the electronic control unit to stop circularly returning the vehicle data corresponding to the data identification information.
3. The vehicle data acquisition method according to claim 1 or 2, wherein the first cycle setting command further includes interval time information for instructing the electronic control unit to cycle an interval time for returning the vehicle data; correspondingly, the acquiring the vehicle data corresponding to the data identification information and returned by the electronic control unit in a circulating manner comprises the following steps:
and acquiring vehicle data corresponding to the data identification information, which is returned by the electronic control unit at intervals.
4. The vehicle data acquisition method according to claim 1 or 2, wherein the acquiring of the vehicle data corresponding to the data identification information that the electronic control unit loops back includes:
acquiring a reply command which is returned by the electronic control unit in a circulating manner and corresponds to the first circulating setting command;
and analyzing the reply command to obtain vehicle data corresponding to the data identification information.
5. The vehicle data acquisition method according to claim 4, wherein after the parsing the reply command to obtain the vehicle data corresponding to the data identification information, further comprises:
determining a data conversion algorithm corresponding to the vehicle data according to the data identification information;
and determining a physical value of the vehicle data according to the data conversion algorithm and the vehicle data.
6. A vehicle data transmission method, characterized in that the method is applied to an electronic control unit of a vehicle, and comprises:
receiving a first cycle setting command sent by the diagnostic equipment; the first loop setup command includes data identification information;
and according to the first cycle setting command, starting to cyclically acquire vehicle data corresponding to the data identification information, and sending the vehicle data to the diagnostic equipment.
7. The vehicle data transmission method according to claim 6, further comprising, after receiving the first loop setting command transmitted by the diagnostic device:
receiving a second cycle setting command sent by the diagnostic equipment; the second loop setup command includes the data identification information;
and stopping acquiring and sending the vehicle data corresponding to the data identification information according to the second cycle setting command.
8. The vehicle data transmission method according to claim 6 or 7, wherein the first cycle setting command further includes interval time information, and the starting of cycle acquisition of the vehicle data corresponding to the data identification information and transmission of the vehicle data to the diagnostic device according to the first cycle setting command includes:
and according to the first cycle setting command, vehicle data corresponding to the data identification information is acquired at intervals, and the vehicle data is sent to the diagnostic equipment.
9. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the computer program, when executed by the processor, causes the electronic device to carry out the steps of the method according to any one of claims 1 to 5 or causes the electronic device to carry out the steps of the method according to any one of claims 6 to 8.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, causes an electronic device to carry out the steps of the method according to any one of claims 1 to 5 or causes an electronic device to carry out the steps of the method according to any one of claims 6 to 8.
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