CN112255999B - Bus data acquisition method and device - Google Patents
Bus data acquisition method and device Download PDFInfo
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- CN112255999B CN112255999B CN202011206699.9A CN202011206699A CN112255999B CN 112255999 B CN112255999 B CN 112255999B CN 202011206699 A CN202011206699 A CN 202011206699A CN 112255999 B CN112255999 B CN 112255999B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- 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
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
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Abstract
The invention belongs to the technical field of automobiles, and discloses a bus data acquisition method and device. The method comprises the following steps: acquiring the line state of an acquisition line connected with each vehicle controller in a target vehicle; when the line state is a normal state, acquiring bus data output by a corresponding vehicle controller according to the acquisition line; and acquiring corresponding controller message data according to the bus data. The invention acquires the bus data of the corresponding vehicle controller according to the acquisition line so as to further realize the acquisition of the controller message data, and compared with the mode that the existing data acquisition equipment is directly connected with the OBD port of the vehicle to acquire the message information of the vehicle controller, the mode can acquire the controller message data more comprehensively, quickly and accurately.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a bus data acquisition method and device.
Background
With the development of new technologies, the functions of automobiles are more and more, more and more controllers are distributed in each module of the automobiles, information interaction is carried out among the controllers through a CAN bus, the detection and sharing of data information are realized, and the CAN bus is more and more widely applied as the most main communication technology of the automobiles.
The collection and analysis of bus data is a main means for analyzing the running state and driving behavior of a vehicle, and becomes an important data analysis means for various large host manufacturers, shared automobiles, taxi companies and other units. At present, bus data acquisition equipment is mainly connected with an automobile OBD port to acquire bus data, and the bus data is analyzed and researched to acquire vehicle running information. With the increasing importance of vehicle safety, all large vehicle enterprises pay more and more attention to the encryption processing of vehicle information, the bus message data information which can be acquired through the vehicle-mounted OBD port is less and less, and even some vehicle enterprises cannot read the bus message data at the OBD port. Therefore, the data acquisition and analysis through the OBD port have a plurality of uncertainties, the completeness of the data analysis is affected, and even the project fails.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a bus data acquisition method and a bus data acquisition device, and aims to solve the technical problem that the prior art cannot quickly and comprehensively acquire controller message data.
In order to achieve the above object, the present invention provides a bus data acquisition method, including the steps of:
acquiring the line state of an acquisition line connected with each vehicle controller in a target vehicle;
when the line state is a normal state, acquiring bus data output by a corresponding vehicle controller according to the acquisition line;
and acquiring corresponding controller message data according to the bus data.
Preferably, the step of acquiring bus data output by the corresponding vehicle controller according to the acquisition line when the line state is a normal state includes:
when the line state is a normal state, determining an input/output channel corresponding to the vehicle controller;
acquiring a message ID of a vehicle controller corresponding to the input and output channel;
and acquiring the bus data of the corresponding vehicle controller according to the message ID.
Preferably, the step of acquiring the line state of the acquisition line connected to each vehicle controller in the target vehicle includes:
determining an acquisition line connected with each vehicle controller in a target vehicle;
detecting the state of an indicator lamp on a detection module corresponding to the acquisition line;
and when the state of the indicator light is in a lighting state, judging that the line state of the acquisition line is in a normal state.
Preferably, after the step of detecting the status of the indicator light on the detection module corresponding to the acquisition line, the method further includes:
when the state of the indicator light is in an off state, judging that the line state of the acquisition line is in an abnormal state;
and displaying a preset acquisition line connection error prompt so that a user can adjust the acquisition line according to the preset acquisition line connection error prompt.
Preferably, before the step of acquiring the line state of the acquisition line connected to each vehicle controller in the target vehicle, the method further includes:
acquiring a controller identifier of a target vehicle;
searching for an acquisition line identifier corresponding to the controller identifier in a mapping relation table, wherein the mapping relation table stores the corresponding relation between the controller identifier and the acquisition line identifier;
and determining the acquisition line connected with each vehicle controller according to the acquisition line identifier.
In addition, to achieve the above object, the present invention also provides a bus data acquisition apparatus, comprising: the device comprises a state acquisition module, a data acquisition module and a message data acquisition module;
the state acquisition module is used for acquiring the line state of an acquisition line connected with each vehicle controller in the target vehicle;
the data acquisition module is used for acquiring bus data output by the corresponding vehicle controller according to the acquisition line when the line state is a normal state;
and the message data acquisition module is used for acquiring corresponding controller message data according to the bus data.
Preferably, the data acquisition module is further configured to, when the line state is a normal state, determine an input/output channel corresponding to the vehicle controller, obtain a message ID of the vehicle controller corresponding to the input/output channel, and obtain bus data of the corresponding vehicle controller according to the message ID.
Preferably, the state acquiring module is further configured to determine a collecting line connected to each vehicle controller in the target vehicle, detect a state of an indicator light on the detecting module corresponding to the collecting line, and determine that a line state of the collecting line is a normal state when the indicator light state is an on state.
Preferably, the state obtaining module is further configured to determine that the line state of the acquisition line is an abnormal state when the status of the indicator light is an off state, and display a preset acquisition line connection error prompt, so that a user adjusts the acquisition line according to the preset acquisition line connection error prompt.
Preferably, the state obtaining module is further configured to obtain a controller identifier of the target vehicle, search for an acquisition line identifier corresponding to the controller identifier in a mapping relation table, store a corresponding relation between the controller identifier and the acquisition line identifier in the mapping relation table, and determine an acquisition line connected to each vehicle controller according to the acquisition line identifier.
The method comprises the steps of acquiring the line state of an acquisition line connected with each vehicle controller in a target vehicle; when the line state is a normal state, acquiring bus data output by a corresponding vehicle controller according to the acquisition line; and acquiring corresponding controller message data according to the bus data. The invention acquires the bus data of the corresponding vehicle controller according to the acquisition line so as to further realize the acquisition of the controller message data, and compared with the mode that the existing data acquisition equipment is directly connected with the OBD port of the vehicle to acquire the message information of the vehicle controller, the mode can acquire the controller message data more comprehensively and quickly.
Drawings
FIG. 1 is a schematic diagram of a bus data acquisition device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a bus data collection method according to a first embodiment of the present invention;
FIG. 3 is a schematic flow chart of a bus data collection method according to a second embodiment of the present invention;
fig. 4 is a block diagram of a first embodiment of a bus data acquisition device according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a data transmission module according to an embodiment of the present invention.
As shown in fig. 1, the data transmission module may include: the circuit comprises an input line (1 … 8), a detection unit (1 … 8) and an output line (1 … 8).
As shown in fig. 1, the input line 10 and the output line 60 may be twisted pair lines, the data transmission module includes an input interface 30, a detection unit 40, and an output interface 50, and the input interface 30, the detection unit 40, and the output interface 50 are connected by the twisted pair lines. The output bus of the vehicle target controller is connected in parallel with an input line (twisted pair) 10, the input line (twisted pair) 1 is connected to the input interface 10 through a connector, the detection module 40 is provided with a green indicator light for judging whether the line connection is correct, and the output line (twisted pair) 60 is respectively connected with the output interface and the data acquisition equipment.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the data transmission module and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
Based on the data transmission module, an embodiment of the present invention provides a bus data acquisition method, and referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the bus data acquisition method according to the present invention.
In this embodiment, the bus data acquisition method includes the following steps:
step S10: and acquiring the line state of a collection line connected with each vehicle controller in the target vehicle.
It should be noted that the main body of the method of the present embodiment may be a computer service device having data processing, network communication and program operation, for example, a data acquisition device installed in a target vehicle, and the present embodiment and each of the following embodiments are described below by taking the data acquisition device as an example.
The collection circuit CAN be a collection circuit which is connected with each vehicle controller CAN bus and data collection equipment, the collection circuit corresponds to each vehicle controller one by one, for example, the vehicle controller 1 corresponds to the collection circuit 1, and the collection circuit 1 is responsible for collecting bus data of the vehicle controller 1. The line state can reflect whether the current acquisition line can normally communicate, and the line state of the acquisition line can be judged according to the state of an indicator lamp on a detection module corresponding to the acquisition line.
In a specific implementation, the execution main body data acquisition device of this embodiment obtains the acquisition lines connected to the vehicle controllers that need to acquire data in the target vehicle, and determines whether the line state of each acquisition line can communicate normally. The method for judging whether the line state of each acquisition line can be normally communicated may be to judge whether the last communication time of the acquisition line is within a preset time threshold, judge that the acquisition line is normal if the last communication time of the acquisition line is within the preset time threshold, judge that the acquisition line is abnormal if the last communication time of the acquisition line is not within the preset time threshold, that is, normal data communication cannot be performed, and adjust the preset time threshold according to factors such as the past use duration and quality of the line, for example, the last normal use end time of the acquisition line is 13:10, and the preset time threshold is 60 minutes, and judge that the acquisition line is normal between 13:10 and 14: 10. The specific implementation may also be determined according to other manners, and the embodiment is not limited herein.
Further, before step S10, to determine the collecting line connected to each vehicle controller, the method further includes:
step S101: a controller identification of the target vehicle is obtained.
It should be noted that the controller identifier of the target vehicle may be a controller identifier of the target vehicle to which data is to be acquired, there are many controllers in the vehicle, and this embodiment does not necessarily acquire bus data of all controllers of the target vehicle, so only the controller identifier of the target vehicle to which data is to be acquired needs to be acquired. The number and the type of the controllers of the target vehicle to be acquired may be adaptively adjusted according to needs, and this embodiment is not limited herein.
In a particular implementation, a data acquisition device obtains a controller designation of a target vehicle for which data is to be acquired.
Step S102: and searching for the acquisition line identifier corresponding to the controller identifier in a mapping relation table, wherein the mapping relation table stores the corresponding relation between the controller identifier and the acquisition line identifier.
It should be noted that the mapping relationship table may be a corresponding relationship between the controller identifier and the collection line identifier.
It can be understood that, in this embodiment, a mapping relationship table is maintained in the data acquisition device, and the mapping relationship table stores the correspondence between the controller identifier and the acquisition line identifier.
In a specific implementation, the data acquisition device firstly determines a vehicle controller of data to be acquired, acquires a vehicle controller identifier of the data to be acquired, searches a corresponding acquisition line identifier in the mapping relation table according to the identifier of the vehicle controller of the data to be acquired, and determines an acquisition line connected with the vehicle controller of the data to be acquired according to the acquisition line identifier.
Step S20: and when the line state is a normal state, acquiring the bus data output by the corresponding vehicle controller according to the acquisition line.
It should be noted that the line state being the normal state may be a state in which the acquisition line can perform normal data communication.
It CAN be understood that the acquisition line is respectively connected to the execution main body data acquisition device of the embodiment and the CAN bus of the vehicle controller corresponding to the acquisition line, and according to the acquisition line, the data acquisition device CAN acquire bus data output by the vehicle controller. The number of the acquisition lines and the number of the vehicle controllers CAN be adjusted in a self-adaptive manner according to specific needs, for example, the vehicle is provided with an acquisition line 1, an acquisition line 2 and an acquisition line 3 which are respectively connected with a CAN bus of an air conditioner controller, a CAN bus of an airbag controller and a CAN bus of an accelerator controller of the vehicle to acquire information of the CAN buses of the controllers.
In a specific implementation, when the line state is a normal state, an input/output channel connecting the vehicle controller and the vehicle CAN bus is determined, a message ID for data interaction between the vehicle controller and the vehicle CAN bus in the input/output channel is acquired, and bus data of the corresponding vehicle controller is acquired according to the message ID.
Step S30: and acquiring corresponding controller message data according to the bus data.
It should be noted that the bus data may be output information of the controller in an output channel where the controller is connected to the CAN bus, and the message data may be information obtained by information interaction between the controller and the CAN bus.
In a specific implementation, information interaction is performed among controllers of a vehicle through a CAN bus, so as to realize detection and sharing of data information.
The method comprises the steps of obtaining the line state of a collection line connected with each vehicle controller in a target vehicle; when the line state is a normal state, acquiring bus data output by a corresponding vehicle controller according to the acquisition line; and acquiring corresponding controller message data according to the bus data. The invention acquires the bus data of the corresponding vehicle controller according to the acquisition line so as to further realize the acquisition of the controller message data, and compared with the mode that the existing data acquisition equipment is directly connected with the OBD port of the vehicle to acquire the message information of the vehicle controller, the mode can acquire the controller message data more comprehensively and quickly.
Referring to fig. 3, fig. 3 is a schematic flow chart of a bus data acquisition method according to a second embodiment of the present invention.
Based on the first embodiment described above, in the present embodiment, the step S10 includes:
step S103: and determining a collection circuit connected with each vehicle controller in the target vehicle, and detecting the state of an indicator lamp on a detection module corresponding to the collection circuit.
It should be noted that the acquisition line includes an input line, a relay module, and an output line, where the relay module includes a detection module, an input interface, and an output interface, and the detection module is provided with an indicator light for determining whether the line state of the acquisition line is normal.
In a specific implementation, the data acquisition device determines an acquisition line connected to a vehicle controller in a target vehicle, determines a state of an indicator light on a detection module on the acquisition line, and may determine whether the indicator light is turned on by installing a temperature sensor or a brightness sensor, or may use another manner, which is not limited herein.
Step S104: and when the state of the indicator light is in a lighting state, judging that the line state of the acquisition line is in a normal state.
In a specific implementation, the data acquisition equipment detects that the state of the indicator lamp is a lighting state, and judges that the line state of the acquisition line is a normal state.
Step S105: and when the state of the indicator light is in an off state, judging that the line state of the acquisition line is in an abnormal state, and displaying a preset acquisition line connection error prompt so that a user can adjust the acquisition line according to the preset acquisition line connection error prompt.
It should be noted that the preset acquisition line connection error prompt may be a voice broadcast manner or a visual error prompt, and this embodiment is not limited herein, and after receiving the acquisition line connection error prompt, the user may adjust the acquisition line in a manner of checking a connection relationship between each input/output interface and each input/output line in the acquisition line or a quality problem of hardware until the indicator light is turned on, so that the acquisition line is correctly connected.
The embodiment determines the collection circuit connected with each vehicle controller in the target vehicle, detects the state of the indicator lamp on the detection module corresponding to the collection circuit, judges that the circuit state of the collection circuit is a normal state when the state of the indicator lamp is a lighting state, judges that the circuit state of the collection circuit is an abnormal state when the state of the indicator lamp is a lighting state, displays a preset collection circuit connection error prompt, so that a user can adjust the collection circuit according to the preset collection circuit connection error prompt, judges the state of the collection circuit through the above modes, timely adjusts factors influencing data collection, avoids unnecessary data errors or waste of data collection time caused by problems of the data collection circuit, and improves the speed and accuracy of obtaining controller message data.
Referring to fig. 4, fig. 4 is a block diagram of a first embodiment of a bus data acquisition device according to the present invention.
As shown in fig. 4, a bus data acquisition device according to an embodiment of the present invention includes a state acquisition module, a data acquisition module, and a message data acquisition module:
the state acquiring module 401 is configured to acquire a line state of an acquisition line connected to each vehicle controller in the target vehicle;
the data acquisition module 402 is configured to acquire bus data output by a corresponding vehicle controller according to the acquisition line when the line state is a normal state;
the message data obtaining module 403 is configured to obtain corresponding controller message data according to the bus data.
The method comprises the steps of obtaining the line state of a collection line connected with each vehicle controller in a target vehicle; when the line state is a normal state, acquiring bus data output by a corresponding vehicle controller according to the acquisition line; and acquiring corresponding controller message data according to the bus data. The invention acquires the bus data of the corresponding vehicle controller according to the acquisition line so as to further realize the acquisition of the controller message data, and compared with the mode that the existing data acquisition equipment is directly connected with the OBD port of the vehicle to acquire the message information of the vehicle controller, the mode can acquire the controller message data more comprehensively and quickly.
Other embodiments or specific implementations of a bus data acquisition device according to the present invention may refer to the above method embodiments, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A bus data acquisition method is characterized by comprising the following steps:
acquiring the line state of an acquisition line connected with each vehicle controller in a target vehicle;
when the line state is a normal state, acquiring bus data output by a corresponding vehicle controller according to the acquisition line;
acquiring corresponding controller message data according to the bus data;
before the step of obtaining the line state of the acquisition line connected with each vehicle controller in the target vehicle, the method further comprises the following steps:
acquiring a controller identifier of a target vehicle;
searching for an acquisition line identifier corresponding to the controller identifier in a mapping relation table, wherein the mapping relation table stores the corresponding relation between the controller identifier and the acquisition line identifier;
determining an acquisition line connected with each vehicle controller according to the acquisition line identifier;
the acquisition lines correspond to the vehicle controllers one to one.
2. The bus data collection method according to claim 1, wherein the step of acquiring the bus data output by the corresponding vehicle controller according to the collection line when the line state is a normal state includes:
when the line state is a normal state, determining an input/output channel corresponding to the vehicle controller;
acquiring a message ID of a vehicle controller corresponding to the input and output channel;
and acquiring the bus data of the corresponding vehicle controller according to the message ID.
3. The bus data collection method according to claim 1, wherein the step of acquiring the line status of the collection line connected to each vehicle controller in the target vehicle includes:
determining an acquisition line connected with each vehicle controller in a target vehicle;
detecting the state of an indicator lamp on a detection module corresponding to the acquisition line;
and when the state of the indicator light is in a lighting state, judging that the line state of the acquisition line is in a normal state.
4. The bus data collection method according to claim 3, wherein after the step of detecting the status of the indicator light on the detection module corresponding to the collection line, the method further comprises:
when the state of the indicator light is in an off state, judging that the line state of the acquisition line is in an abnormal state;
and displaying a preset acquisition line connection error prompt so that a user can adjust the acquisition line according to the preset acquisition line connection error prompt.
5. A bus data collection device, comprising: the device comprises a state acquisition module, a data acquisition module and a message data acquisition module;
the state acquisition module is used for acquiring the line state of an acquisition line connected with each vehicle controller in the target vehicle;
the data acquisition module is used for acquiring bus data output by the corresponding vehicle controller according to the acquisition line when the line state is a normal state;
the message data acquisition module is used for acquiring corresponding controller message data according to the bus data;
the state acquisition module is further used for acquiring a controller identifier of the target vehicle; searching for an acquisition line identifier corresponding to the controller identifier in a mapping relation table, wherein the mapping relation table stores the corresponding relation between the controller identifier and the acquisition line identifier; determining an acquisition line connected with each vehicle controller according to the acquisition line identifier;
the acquisition lines correspond to the vehicle controllers one to one.
6. The bus data collection device of claim 5, wherein the data collection module is further to:
when the line state is a normal state, determining an input/output channel corresponding to the vehicle controller;
acquiring a message ID of a vehicle controller corresponding to the input and output channel;
and acquiring the bus data of the corresponding vehicle controller according to the message ID.
7. The bus data acquisition device as recited in claim 5 wherein the status acquisition module is further configured to:
determining an acquisition line connected with each vehicle controller in a target vehicle;
detecting the state of an indicator lamp on a detection module corresponding to the acquisition line;
and when the state of the indicator light is in a lighting state, judging that the line state of the acquisition line is in a normal state.
8. The bus data acquisition device as recited in claim 7 wherein the status acquisition module is further configured to:
when the state of the indicator light is in an off state, judging that the line state of the acquisition line is in an abnormal state;
and displaying a preset acquisition line connection error prompt so that a user can adjust the acquisition line according to the preset acquisition line connection error prompt.
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