CN110297482A - Vehicle data collection device and its acquisition method based on OBD system - Google Patents
Vehicle data collection device and its acquisition method based on OBD system Download PDFInfo
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- CN110297482A CN110297482A CN201910617808.7A CN201910617808A CN110297482A CN 110297482 A CN110297482 A CN 110297482A CN 201910617808 A CN201910617808 A CN 201910617808A CN 110297482 A CN110297482 A CN 110297482A
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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
- G05B2219/24065—Real time diagnostics
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- Automation & Control Theory (AREA)
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Abstract
The invention discloses vehicle data collection devices and its acquisition method based on OBD system, belong to onboard system technical field.It further include MCU drive module, master scheduling module, real-time information collection module, communications protocol parsing module, communication module, data buffering module, communication module management module including OBD data collector；MCU drive module is used to provide running environment for each module；Master scheduling module is used to monitor the operating condition of each module, issues the instruction of control, coordinates the working condition of each module；Real-time information collection module is used to control the real-time vehicle information of OBD data collector acquisition vehicle, provides the running state informations such as vehicle bus state and suspend mode application to master scheduling module.Collected vehicle data frame is parsed according to II application layer protocol of OBD-, so that vehicle state data acquisition keeps high efficiency, accuracy under different vehicle platform.
Description
Technical field
The invention belongs to onboard system technical field, it is related to vehicle data collection device and its acquisition side based on OBD system
Method.
Background technique
With the continuous development of car networking technology, the popularization and application of intelligent transportation become important at present development trend it
One.The important feature of car networking includes: the collection to vehicle data, the transmission of vehicle data.Wherein, the one of vehicle data collection
A important system is OBD (On-BoardDiagnosticSystem, onboard diagnostics) system.
OBD system, by the standard criterion of AIAE American institute of automobile engineers (SAE) the automobile self-diagnosable system proposed.Initially
It is that government enforces to monitor motor vehicle exhaust emission use, OBD system monitors multiple systems and component, including starts
Machine, catalytic converter, grain catcher, lambda sensor, emission control systems, fuel system etc..
Although OBD system can detect multinomial vehicle status parameters, ordinary user generally can't actively remove detection OBD
System is used usually only when vehicle failure is sent to maintenance store and repairs by maintenance personal's detection.Currently, lacking
The weary data-selected scheme for enabling a user to obtain OBD system, user can not be using the vehicle status parameters of OBD system detection to vehicle
Effectively maintained.
Summary of the invention
It is an object of the invention to: vehicle data collection device and its acquisition method based on OBD system are provided, is solved
The problem of OBD system data cannot be directly acquired by user.
The technical solution adopted by the invention is as follows:
Vehicle data acquisition system based on OBD system, including OBD data collector further include MCU drive module, master
Scheduler module, real-time information collection module, communications protocol parsing module, communication module, data buffering module, communication module management
Module；
The MCU drive module is used to provide running environment for each module；
The master scheduling module is used to monitor the operating condition of each module, issues the instruction of control, coordinates the work of each module
Make state；
The real-time information collection module is used to control the real-time vehicle information of OBD data collector acquisition vehicle, to master
Scheduler module provides the running state informations such as vehicle bus state and suspend mode application；
The data buffering module is for storing the collected data information of real-time information collection module；
The communications protocol parsing module for complete vehicle bus data to communication data transmission, communication data transmission,
Protocol conversion of the communication transfer order to controller control command；
The communication module management is for the working condition according to the control command communication control module of master scheduler.
Further, the data buffering module includes real time data buffer module and communication data buffer module, described
It is used for storing the collected vehicle bus real time data of OBD data collector, communication data buffer area real time data buffer area
In the communication data transmission that memory communicating module receives.
Further, the MCU drive module include CAN driving, the driving of K line, clock driving, IO driving, serial port drive,
Economize on electricity driving.
Vehicle data collection method based on OBD system, S1: initialization, and carry out system operating mode judgement.
S2: the communication connection of system and vehicle is established；
S3: judge the OBD agreement that vehicle follows for ISO-15765 or ISO-14230 according to the data that vehicle bus is responded；
S4: vehicle real-time data acquisition circulation is entered according to given protocol, and data are stored in data buffer zone；
S5: vehicle data transmission.
Further, the S2 the following steps are included:
S2.1: OBD agreement inquiry message is sent to vehicle middle line and vehicle middle line and carries out communication connection；
S2.2: if receiving corresponding data response, S3 is carried out；
S2.3: if not receiving corresponding data response, S2.1 is returned to；
S2.4: more than corresponding data response is not received three times, system carries out suspend mode.
Further, the S5 the following steps are included:
S5.1: vehicle data circle collection；
S5.2: judge vehicle data whether continuous-stable；
S5.3: if vehicle data continuous-stable, S5.1 is returned to；
S5.4: if vehicle data is unstable, system carries out suspend mode.
Further, the date storage method of the S4 includes buffering vehicle bus real-time data memory to real time data
Area stores communication data transmission to communication data buffer area.
Further, vehicle data transmission method described in the S5 includes being sent to by way of wireless transmission remotely
Server.
Further, vehicle data transmission method described in the S5 includes being uploaded in a manner of USB OTG wire transmission
To PPC.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are: of the invention based on OBD system
The vehicle data collection device and its acquisition method of system using OBD data collector acquire vehicle data, according to II agreement of OBD- with
The form of OBD vehicle data collection information collection establishes vehicle data collection mechanism, root by bus cycles property bus interrogation reply system
Collected vehicle data frame is parsed according to II application layer protocol of OBD-, so that the vehicle status number under different vehicle platform
High efficiency, accuracy are kept according to acquisition.It is complicated more flexibly to cope with vehicle data for the embedded system developed based on C language
The upload demand of change.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings, in which:
Fig. 1 is a kind of functional block diagram of the vehicle data acquisition system of the invention based on OBD system；
Fig. 2 is a kind of flow chart of the vehicle data collection method of the invention based on OBD system.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
Feature and performance of the invention are described in further detail below with reference to embodiment.
Embodiment one
The vehicle data acquisition system based on OBD system that present pre-ferred embodiments provide, as shown in Figure 1, including OBD
Data collector further includes MCU drive module, master scheduling module, real-time information collection module, communications protocol parsing module, leads to
Interrogate module, data buffering module, communication module management module；
The MCU drive module is used to provide running environment for each module；
The master scheduling module is used to monitor the operating condition of each module, issues the instruction of control, coordinates the work of each module
Make state；
The real-time information collection module is used to control the real-time vehicle information of OBD data collector acquisition vehicle, to master
Scheduler module provides the running state informations such as vehicle bus state and suspend mode application；
The data buffering module is for storing the collected data information of real-time information collection module；
The communications protocol parsing module for complete vehicle bus data to communication data transmission, communication data transmission,
Protocol conversion of the communication transfer order to controller control command；
The communication module management is for the working condition according to the control command communication control module of master scheduler.
Preferably, the data buffering module includes real time data buffer module and communication data buffer module, the reality
When data buffer zone for storing the collected vehicle bus real time data of OBD data collector, communication data buffer area is used for
The communication data transmission that memory communicating module receives.
Preferably, the MCU drive module includes CAN driving, the driving of K line, clock driving, IO driving, serial port drive, section
Electric drive.
Of the invention vehicle data collection device and its acquisition method based on OBD system utilizes the acquisition of OBD data collector
Vehicle data passes through bus cycles property bus question and answer side according to II agreement of OBD- in the form of OBD vehicle data collection information collection
Formula establishes vehicle data collection mechanism, is parsed according to II application layer protocol of OBD- to collected vehicle data frame, so that
Vehicle state data acquisition keeps high efficiency, accuracy under different vehicle platform.The embedded system developed based on C language
System, can flexibly cope with vehicle data upload demand complicated and changeable.
The present embodiment also provides a kind of vehicle data collection method based on OBD system, as shown in Fig. 2, including following step
Suddenly；
S1: initialization, and carry out system operating mode judgement.
S2: the communication connection of system and vehicle is established.
S3: judge the OBD agreement that vehicle follows for ISO-15765 or ISO-14230 according to the data that vehicle bus is responded.
S4: vehicle real-time data acquisition circulation is entered according to given protocol, and data are stored in data buffer zone.
S5: vehicle data transmission.
Preferably, the S2 the following steps are included:
S2.1: OBD agreement inquiry message is sent to vehicle middle line and vehicle middle line and carries out communication connection.
S2.2: if receiving corresponding data response, S3 is carried out.
S2.3: if not receiving corresponding data response, S2.1 is returned to.
S2.4: more than corresponding data response is not received three times, system carries out suspend mode.
Preferably, the S5 the following steps are included:
S5.1: vehicle data circle collection.
S5.2: judge vehicle data whether continuous-stable.
S5.3: if vehicle data continuous-stable, S5.1 is returned to.
S5.4: if vehicle data is unstable, system carries out suspend mode.
Preferably, the date storage method of the S4 includes buffering vehicle bus real-time data memory to real time data
Area stores communication data transmission to communication data buffer area.
Preferably, vehicle data transmission method described in the S5 includes that long-range clothes are sent to by way of wireless transmission
Business device.
Preferably, vehicle data transmission method described in the S5 includes being uploaded in a manner of USB OTG wire transmission
PPC。
The foregoing is merely illustrative of the preferred embodiments of the present invention, the protection scope being not intended to limit the invention, any
Those skilled in the art within the spirit and principles in the present invention made by any modifications, equivalent replacements, and improvements etc.,
It should all be included in the protection scope of the present invention.
Claims (9)
1. the vehicle data acquisition system based on OBD system, including OBD data collector, it is characterised in that: further include that MCU drives
Dynamic model block, real-time information collection module, communications protocol parsing module, communication module, data buffering module, leads at master scheduling module
Interrogate module management module；
The MCU drive module is used to provide running environment for each module；
The master scheduling module is used to monitor the operating condition of each module, issues the instruction of control, coordinates the work shape of each module
State；
The real-time information collection module is used to control the real-time vehicle information of OBD data collector acquisition vehicle, to master scheduling
Module provides the running state informations such as vehicle bus state and suspend mode application；
The data buffering module is for storing the collected data information of real-time information collection module；
The communications protocol parsing module is for completing vehicle bus data to communication data transmission, communication data transmission, communication
Communicate a command to the protocol conversion of controller control command；
The communication module management is for the working condition according to the control command communication control module of master scheduler.
2. the vehicle data acquisition system according to claim 1 based on OBD system, it is characterised in that: the data are slow
Die block includes real time data buffer module and communication data buffer module, and the real time data buffer area is for storing OBD number
According to the collected vehicle bus real time data of collector, communication of the communication data buffer area for memory communicating module to receive is passed
Transmission of data.
3. the vehicle data collection device system according to claim 1 based on OBD system, it is characterised in that: the MCU drives
Dynamic model block includes CAN driving, the driving of K line, clock driving, IO driving, serial port drive, economize on electricity driving.
4. the vehicle data collection method based on OBD system, it is characterised in that: include the following steps；
S1: initialization, and carry out system operating mode judgement；
S2: the communication connection of system and vehicle is established；
S3: judge the OBD agreement that vehicle follows for ISO-15765 or ISO-14230 according to the data that vehicle bus is responded；
S4: vehicle real-time data acquisition circulation is entered according to given protocol, and data are stored in data buffer zone；
S5: vehicle data transmission.
5. the vehicle data collection method according to claim 4 based on OBD system, it is characterised in that: the S2 includes
Following steps:
S2.1: OBD agreement inquiry message is sent to vehicle middle line and vehicle middle line and carries out communication connection；
S2.2: if receiving corresponding data response, S3 is carried out；
S2.3: if not receiving corresponding data response, S2.1 is returned to；
S2.4: more than corresponding data response is not received three times, system carries out suspend mode.
6. the vehicle data collection method according to claim 4 based on OBD system, it is characterised in that: the S5 includes
Following steps:
S5.1: vehicle data circle collection；
S5.2: judge vehicle data whether continuous-stable；
S5.3: if vehicle data continuous-stable, S5.1 is returned to；
S5.4: if vehicle data is unstable, system carries out suspend mode.
7. the vehicle data collection method according to claim 4 based on OBD system, it is characterised in that: the number of the S4
It include that communication data transmission is stored vehicle bus real-time data memory to real time data buffer area to communication to according to storage method
Data buffer zone.
8. the vehicle data collection method according to claim 4 based on OBD system, it is characterised in that: institute in the S5
Stating vehicle data transmission method includes that remote server is sent to by way of wireless transmission.
9. the vehicle data collection method according to claim 4 based on OBD system, it is characterised in that: institute in the S5
Stating vehicle data transmission method includes being uploaded to PPC in a manner of USB OTG wire transmission.
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| CN201910617808.7A CN110297482A (en) | 2019-07-10 | 2019-07-10 | Vehicle data collection device and its acquisition method based on OBD system |
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Cited By (1)
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Application publication date: 20191001 |