CN107203197A - A kind of vehicle-state Monitoring Data collector and its acquisition method based on OBD - Google Patents
A kind of vehicle-state Monitoring Data collector and its acquisition method based on OBD Download PDFInfo
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- CN107203197A CN107203197A CN201710392709.4A CN201710392709A CN107203197A CN 107203197 A CN107203197 A CN 107203197A CN 201710392709 A CN201710392709 A CN 201710392709A CN 107203197 A CN107203197 A CN 107203197A
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- vehicle
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- obd
- microprocessor
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Classifications
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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
- G05B23/0218—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
- G05B23/0256—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 injecting test signals and analyzing monitored process response, e.g. injecting the test signal while interrupting the normal operation of the monitored system; superimposing the test signal onto a control signal during normal operation of the monitored system
-
- 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
Abstract
The present invention provides a kind of vehicle-state Monitoring Data collector and its acquisition method based on OBD, and data acquisition unit includes OBD interface modules, microprocessor, communication module, power module and state display module.Based on vehicle bus electric-control system and OBD II agreements, real-time online collection is carried out to vehicle data by OBD data acquisition units, layer protocol is communicated according to OBD II to extract the vehicle data collected, vehicle data is packed again according to the host-host protocol independently worked out, vehicle status data is transmitted to local online data terminal by way of wire transmission, transmitted vehicle status data to remote server by way of mobile data network long range radio transmissions.The present invention proposes a kind of brand-new vehicle-state Monitoring Data collector based on OBD, and vehicle can be monitored in real time, and vehicle real-time status and fault message including VE Vehicle Economy index are provided towards driver.
Description
Technical field
The invention belongs to the electromechanical hybrid technology field of automobile, and in particular to a kind of vehicle-state Monitoring Data based on OBD
Collector and its acquisition method.
Background technology
With the continuous progress of vehicle manufacturing technology, automobile has been developed as the complexity that mechanical, electrical, liquid, magnetic are highly coupled
System, for internal combustion engine quasi-tradition energy type vehicle, its fuel economy is the mostly important index for evaluating vehicle performance.Shadow
Ring factor such as driving behavior of road traffic environment, vehicle mechanical performance and driver etc. of VE Vehicle Economy.But,
It is difficult to by way of improving traffic environment in short-term and lifting VE Vehicle Economy；It is interior at present by long term accumulation
Combustion engine technology is quite ripe by long-term development, and the fuel oil of vehicle is obviously improved by improving the measures such as internal-combustion engine technology
Economy is difficult to realize；The failure of travel condition of vehicle and situation, particularly vehicle can not be grasped in real time to be obtained in time, be made
There is great potential safety hazard in road vehicle operation.
Current vehicle-state monitoring and fault diagnosis are generally, towards professional, to lack the car provided towards driver
Status monitoring and fault diagnosis, therefore everyday driver is difficult directly perceived to obtain this type of information；And for the real-time of OBD system offer
Vehicle data lacks further data mining and integrated treatment, to obtain more rich real-time vehicle status information；In economy
Property driving in terms of, the fuel-economy Journal of Sex Research lacked for every kind of driving behavior have ignored the difference of different driving environments and vehicle
Property.
The content of the invention
In view of the above-mentioned problems, the present invention propose a kind of brand-new vehicle-state Monitoring Data collector based on OBD and its
Acquisition method, can in real time be monitored to vehicle, and the vehicle including VE Vehicle Economy index is provided towards driver
Real-time status and fault message.
In order to achieve the above object, technical scheme is as follows：
The present invention provides a kind of vehicle-state Monitoring Data collector based on OBD, including：
OBD interface modules, including CAN transceiver and K interface circuits, CAN transceiver one end and vehicle bus
CAN-L, CAN-H are connected, and the other end is connected with CAN-Rx, CAN-Tx of microprocessor, for realizing CAN information and Wei Chu
Manage the mutual conversion of device information；K interface circuits one end is connected with vehicle bus ISOK, the UART ends of the other end and microprocessor
Mouth is connected, the mutual conversion for realizing K lines information and microprocessor intelligence；
Microprocessor, including UART communication units, CAN communication unit and memory cell, microprocessor control OBD interface electricity
Road module carries out the collection of real-time vehicle data frame, and real-time vehicle data are parsed from data frame, is stored in and deposits
In storage unit, pass through the UART port transmissions of UART communication units to wireless communication module；
Communication module, its PORT COM is connected with the UART ports of microprocessor, and microprocessor passes through AT Command Set control
Communication module transmitting/receiving wireless information processed；
Power module and state display module, power module are connected with vehicle bus, state display module and microprocessor
It is connected to display wireless messages reiving/transmitting state, information of vehicles reiving/transmitting state and on/off state.
It is preferred that, provided according to the agreements of OBD- II, CAN communications protocol follows ISO-11898 and ISO-15765 associations
View, CAN transceiver chooses MCP2551 modules；
Provided according to the agreements of OBD- II, K line communications protocol follows ISO-9141 and ISO-14230 (KWP2000) agreement.
It is preferred that, the chip of microprocessor is model STM32F103x 32-bit microprocessor, and UART communication units contain
ISO-9141 bus protocols, CAN communication unit bus protocol containing ISO-11898, memory cell is 64K memory cell.
It is preferred that, communication module includes wireless communication module and wire communication module, and wireless communication module is logical from core news
The SIM900A modules of company, this module is double frequency GSM/GPRS modules, using SMT encapsulation form, its be integrated with communications protocol and
Wireless telecommunications control program；
Wire communication module selects the MAX3301E modules of Maxim companies, and the device is integrated with charge pump, for realizing
USB OTG are communicated.
It is preferred that, the access voltage of vehicle bus is 12V bus voltages, and power module chooses 78L05AI Voltage stabilizing modules, electricity
Source module by vehicle 12VDC be converted to 5VDC be used for be each module for power supply.
It is preferred that, state display module includes red, yellow and green three color LED lamps.
The present invention also provides a kind of vehicle-state Monitoring Data acquisition method based on OBD, comprises the following steps：
1) define OBD vehicle data collection information collection P and be described as P={ Pf,Ps,Po, PfFor vehicle rapid data collection
Collection, PsFor automobile low-speed gathered data collection, PoFor the disposable gathered data collection of vehicle, three can be merged into：
Pf={ Pfi| i=1,2 ..., N }；
Ps={ Psj| j=1,2 ..., M }；
Po={ Pok| k=1,2 ..., Q }；
Wherein, PfiFor vehicle rapid data collection, it is total to N number of；PsjFor automobile low-speed gathered data, common M；PokFor vehicle
Disposable gathered data, common Q；
2) vehicle status data of OBD-II protocol definitions, vehicle identification information and fault information acquisition mechanism are bus
Data frame response formula mechanism, therefore vehicle rapid data collection Pfi, automobile low-speed gathered data Psj, the disposable gathered data of vehicle
PokIt can be described as respectively：
Pfi=(mfai,mfbi,TC,TK)；
Psj=(msaj,mfbi,TC,TK)；
Pok=(moak,mobk)；
Wherein, mfai、msaj、moakData frame, m are inquired for vehicle datafbi、msbj、mobkFor vehicle data reply data frame,
TCFor CAN vehicle data collection cycle, TKFor the K line vehicle data collection cycles；
3) step 1 and 2, needs fixed cycle to send vehicle data inquiry data frame to vehicle bus, obtains corresponding vehicle number
According to reply data frame, the data format of inquiry and reply data frame follows OBD-II application layer protocols (ISO-15031), accordingly
Agreement can generate inquiry data frame, and reply data frame is parsed；
4) step 1 and 2 does conclusion simplification, and OBD information collection P is described as：
P={ Pi| i=1,2 ..., N+M+Q }；
Wherein, PiFor vehicle data, PiIt can be described as：
Pi=(mai,mbi,TC,TK)；
Wherein, maiData frame, m are inquired for vehicle databiFor vehicle data reply data frame, TCFor CAN vehicle number
According to collection period, TKFor the K line vehicle data collection cycles；
5) can be by m in step 4 by OBD-II agreementsai、mbiIt is respectively depicted as：
mai=(Ia,Wi,Di)；
Wherein, IaFor OBD data acquisition equipment buses ID, WiNumbered for vehicle data collection interrogation mode, DiFor vehicle number
According to parameter ID；
mbi=(Ib,Vi,Di,Mvi)；
Wherein, IbFor answer bus controller ID, ViNumbered for vehicle data collection answer-mode, DiJoin for vehicle data
Number ID, MviFor the vehicle data real time data section of bus response.
Beneficial effect：The vehicle data collected using OBD data collecting systems, according to OBD-II agreements with OBD vehicles
The form of data acquisition information collection sets up vehicle data collection mechanism by bus cycles property bus interrogation reply system, according to OBD-II
Application layer protocol is parsed to the vehicle data frame collected；On this basis, data variance is carried out for different vehicle
Collection matching so that vehicle state data acquisition keeps high efficiency, accuracy under different vehicle platform.
Brief description of the drawings
Fig. 1 is the OBD data acquisition units wireless telecommunications version hardware structure schematic diagram of the embodiment of the present invention.
Fig. 2 is OTG editions hardware structure schematic diagrames of OBD data acquisition unit USB of the embodiment of the present invention.
Fig. 3 schemes for the OBD data acquisition units PCB of the embodiment of the present invention.
Embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
In order to reach the purpose of the present invention, as shown in Figure 1 to Figure 3, provided in the one of which embodiment of the present invention
A kind of vehicle-state Monitoring Data collector based on OBD, including：
OBD interface modules, including CAN transceiver and K interface circuits, CAN transceiver one end and vehicle bus
CAN-L, CAN-H are connected, and the other end is connected with CAN-Rx, CAN-Tx of microprocessor, for realizing CAN information and Wei Chu
Manage the mutual conversion of device information；K interface circuits one end is connected with vehicle bus ISOK, the UART ends of the other end and microprocessor
Mouth is connected, the mutual conversion for realizing K lines information and microprocessor intelligence；
Microprocessor, including UART communication units, CAN communication unit and memory cell, microprocessor control OBD interface electricity
Road module carries out the collection of real-time vehicle data frame, and real-time vehicle data are parsed from data frame, is stored in and deposits
In storage unit, pass through the UART port transmissions of UART communication units to wireless communication module；
Communication module, its PORT COM is connected with the UART ports of microprocessor, and microprocessor passes through AT Command Set control
Communication module transmitting/receiving wireless information processed；
Power module and state display module, power module are connected with vehicle bus, state display module and microprocessor
It is connected to display wireless messages reiving/transmitting state, information of vehicles reiving/transmitting state and on/off state.
Wherein, provided according to the agreements of OBD- II, CAN communications protocol follows ISO-11898 and ISO-15765 agreements,
CAN transceiver chooses MCP2551 modules；
Provided according to the agreements of OBD- II, K line communications protocol follows ISO-9141 and ISO-14230 (KWP2000) agreement.
The chip of microprocessor is model STM32F103x 32-bit microprocessor, and UART communication units contain ISO-9141
Bus protocol, CAN communication unit bus protocol containing ISO-11898, memory cell is 64K memory cell.
Communication module includes wireless communication module and wire communication module, and wireless communication module is from Xin Xuntong companies
SIM900A modules, this module is double frequency GSM/GPRS modules, and using SMT encapsulation form, it is integrated with communications protocol and channel radio
Interrogate control program；
Wire communication module selects the MAX3301E modules of Maxim companies, and the device is integrated with charge pump, for realizing
USB OTG are communicated.
The access voltage of vehicle bus is 12V bus voltages, and power module chooses 78L05AI Voltage stabilizing modules, power module
By vehicle 12VDC be converted to 5VDC be used for be each module for power supply.
State display module includes red, yellow and green three color LED lamps.
Present embodiment also provides a kind of vehicle-state Monitoring Data acquisition method based on OBD, comprises the following steps：
1) define OBD vehicle data collection information collection P and be described as P={ Pf,Ps,Po, PfFor vehicle rapid data collection
Collection, PsFor automobile low-speed gathered data collection, PoFor the disposable gathered data collection of vehicle, three can be merged into：
Pf={ Pfi| i=1,2 ..., N }；
Ps={ Psj| j=1,2 ..., M }；
Po={ Pok| k=1,2 ..., Q }；
Wherein, PfiFor vehicle rapid data collection, it is total to N number of；PsjFor automobile low-speed gathered data, common M；PokFor vehicle
Disposable gathered data, common Q；
2) vehicle status data of OBD-II protocol definitions, vehicle identification information and fault information acquisition mechanism are bus
Data frame response formula mechanism, therefore vehicle rapid data collection Pfi, automobile low-speed gathered data Psj, the disposable gathered data of vehicle
PokIt can be described as respectively：
Pfi=(mfai,mfbi,TC,TK)；
Psj=(msaj,mfbi,TC,TK)；
Pok=(moak,mobk)；
Wherein, mfai、msaj、moakData frame, m are inquired for vehicle datafbi、msbj、mobkFor vehicle data reply data frame,
TCFor CAN vehicle data collection cycle, TKFor the K line vehicle data collection cycles；
3) step 1 and 2, needs fixed cycle to send vehicle data inquiry data frame to vehicle bus, obtains corresponding vehicle number
According to reply data frame, the data format of inquiry and reply data frame follows OBD-II application layer protocols (ISO-15031), accordingly
Agreement can generate inquiry data frame, and reply data frame is parsed；
4) step 1 and 2 does conclusion simplification, and OBD information collection P is described as：
P={ Pi| i=1,2 ..., N+M+Q }；
Wherein, PiFor vehicle data, PiIt can be described as：
Pi=(mai,mbi,TC,TK)；
Wherein, maiData frame, m are inquired for vehicle databiFor vehicle data reply data frame, TCFor CAN vehicle number
According to collection period, TKFor the K line vehicle data collection cycles；
5) can be by m in step 4 by OBD-II agreementsai、mbiIt is respectively depicted as：
mai=(Ia,Wi,Di)；
Wherein, IaFor OBD data acquisition equipment buses ID, WiNumbered for vehicle data collection interrogation mode, DiFor vehicle number
According to parameter ID；
mbi=(Ib,Vi,Di,Mvi)；
Wherein, IbFor answer bus controller ID, ViNumbered for vehicle data collection answer-mode, DiJoin for vehicle data
Number ID, MviFor the vehicle data real time data section of bus response.
Inquiry frame and the specific data content of acknowledgement frame in the acquisition list that vehicle data collection method is determined in the present invention
Such as Tables 1 and 2.
Table 1：Vehicle status data inquires frame data content
Table 2：Vehicle status data acknowledgement frame data content
Vehicle status data inquiry data frame can be generated by Tables 1 and 2, and can be from vehicle status data reply data
Vehicle status data real time value part is parsed in frame.
Above-described is only the preferred embodiment of the present invention, it is noted that for one of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (7)
1. a kind of vehicle-state Monitoring Data collector based on OBD, it is characterised in that including：
OBD interface modules, including CAN transceiver and K interface circuits, CAN transceiver one end and vehicle bus CAN-L,
CAN-H is connected, and the other end is connected with CAN-Rx, CAN-Tx of microprocessor, for realizing that CAN information is believed with microprocessor
The mutual conversion of breath；K interface circuits one end is connected with vehicle bus ISOK, the UART ports phase of the other end and microprocessor
Even, the mutual conversion for realizing K lines information and microprocessor intelligence；
Microprocessor, including UART communication units, CAN communication unit and memory cell, microprocessor control OBD interface circuit moulds
Block carries out the collection of real-time vehicle data frame, and real-time vehicle data are parsed from data frame, is stored in storage single
In member, pass through the UART port transmissions of UART communication units to wireless communication module；
Communication module, its PORT COM is connected with the UART ports of microprocessor, and microprocessor is controlled logical by AT Command Set
Interrogate module transmitting/receiving wireless information；
Power module and state display module, power module are connected with vehicle bus, and state display module is connected with microprocessor
For showing wireless messages reiving/transmitting state, information of vehicles reiving/transmitting state and on/off state.
2. the vehicle-state Monitoring Data collector according to claim 1 based on OBD, it is characterised in that according to OBD-
II agreement provides that CAN communications protocol follows ISO-11898 and ISO-15765 agreements, and CAN transceiver chooses MCP2551 moulds
Block；
Provided according to the agreements of OBD- II, K line communications protocol follows ISO-9141 and ISO-14230 (KWP2000) agreement.
3. the vehicle-state Monitoring Data collector according to claim 1 based on OBD, it is characterised in that microprocessor
Chip be model STM32F103x 32-bit microprocessor, UART communication units bus protocol containing ISO-9141, CAN communication
Unit bus protocol containing ISO-11898, memory cell is 64K memory cell.
4. the vehicle-state Monitoring Data collector according to claim 1 based on OBD, it is characterised in that communication module
Including wireless communication module and wire communication module, wireless communication module selects the SIM900A modules of Xin Xuntong companies, this module
It is double frequency GSM/GPRS modules, using SMT encapsulation form, it is integrated with communications protocol and wireless telecommunications control program；
Wire communication module selects the MAX3301E modules of Maxim companies, and the device is integrated with charge pump, for realizing USB
OTG is communicated.
5. the vehicle-state Monitoring Data collector according to claim 1 based on OBD, it is characterised in that vehicle bus
Access voltage be 12V bus voltages, power module chooses 78L05AI Voltage stabilizing modules, and power module is converted to vehicle 12VDC
5VDC is used to be each module for power supply.
6. the vehicle-state Monitoring Data collector according to claim 1 based on OBD, it is characterised in that status display
Module includes red, yellow and green three color LED lamps.
7. a kind of vehicle-state Monitoring Data acquisition method based on OBD, it is characterised in that comprise the following steps：
1) define OBD vehicle data collection information collection P and be described as P={ Pf,Ps,Po, PfFor vehicle rapid data collection collection, PsFor
Automobile low-speed gathered data collection, PoFor the disposable gathered data collection of vehicle, three can be merged into：
Pf={ Pfi| i=1,2 ..., N }；
Ps={ Psj| j=1,2 ..., M }；
Po={ Pok| k=1,2 ..., Q }；
Wherein, PfiFor vehicle rapid data collection, it is total to N number of；PsjFor automobile low-speed gathered data, common M；PokFor vehicle once
Property gathered data, common Q；
2) vehicle status data of OBD-II protocol definitions, vehicle identification information and fault information acquisition mechanism are bus data
Frame response formula mechanism, therefore vehicle rapid data collection Pfi, automobile low-speed gathered data Psj, the disposable gathered data P of vehicleokPoint
It not can be described as：
Pfi=(mfai,mfbi,TC,TK)；
Psj=(msaj,mfbi,TC,TK)；
Pok=(moak,mobk)；
Wherein, mfai、msaj、moakData frame, m are inquired for vehicle datafbi、msbj、mobkFor vehicle data reply data frame, TCFor
CAN vehicle data collection cycle, TKFor the K line vehicle data collection cycles；
3) step 1 and 2, needs fixed cycle to send vehicle data inquiry data frame to vehicle bus, obtaining corresponding vehicle data should
Data frame is answered, inquires and the data format of reply data frame follows OBD-II application layer protocols (ISO-15031), accordingly agreement
Inquiry data frame can be generated, and reply data frame is parsed；
4) step 1 and 2 does conclusion simplification, and OBD information collection P is described as：
P={ Pi| i=1,2 ..., N+M+Q }；
Wherein, PiFor vehicle data, PiIt can be described as：
Pi=(mai,mbi,TC,TK)；
Wherein, maiData frame, m are inquired for vehicle databiFor vehicle data reply data frame, TCAdopted for CAN vehicle data
Collection cycle, TKFor the K line vehicle data collection cycles；
5) can be by m in step 4 by OBD-II agreementsai、mbiIt is respectively depicted as：
mai=(Ia,Wi,Di)；
Wherein, IaFor OBD data acquisition equipment buses ID, WiNumbered for vehicle data collection interrogation mode, DiJoin for vehicle data
Number ID；
mbi=(Ib,Vi,Di,Mvi)；
Wherein, IbFor answer bus controller ID, ViNumbered for vehicle data collection answer-mode, DiFor vehicle data parameter ID,
MviFor the vehicle data real time data section of bus response.
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Cited By (6)
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| CN108415410A (en) * | 2018-03-19 | 2018-08-17 | 商丘师范学院 | A kind of vehicle fault diagnosis system and diagnostic method |
| CN109634193A (en) * | 2019-02-14 | 2019-04-16 | 南宁学院 | A kind of isolated CAN data collection system with WIFI communication |
| CN110297482A (en) * | 2019-07-10 | 2019-10-01 | 兰州屹鼎环保科技有限公司 | Vehicle data collection device and its acquisition method based on OBD system |
| CN111152791A (en) * | 2020-01-03 | 2020-05-15 | 江苏理工学院 | Vehicle state monitoring method and system based on real-time vehicle data |
| US10916074B2 (en) | 2018-07-16 | 2021-02-09 | Ford Global Technologies, Llc | Vehicle wheel impact detection |
| US11676429B2 (en) | 2019-09-04 | 2023-06-13 | Ford Global Technologies, Llc | Vehicle wheel impact detection and response |
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| CN110297482A (en) * | 2019-07-10 | 2019-10-01 | 兰州屹鼎环保科技有限公司 | Vehicle data collection device and its acquisition method based on OBD system |
| US11676429B2 (en) | 2019-09-04 | 2023-06-13 | Ford Global Technologies, Llc | Vehicle wheel impact detection and response |
| CN111152791A (en) * | 2020-01-03 | 2020-05-15 | 江苏理工学院 | Vehicle state monitoring method and system based on real-time vehicle data |
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