CN105652858A - OBD (on-board diagnostics) equipment identification method and OBD equipment identification system based on data request intervals - Google Patents
OBD (on-board diagnostics) equipment identification method and OBD equipment identification system based on data request intervals Download PDFInfo
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- CN105652858A CN105652858A CN201610201363.0A CN201610201363A CN105652858A CN 105652858 A CN105652858 A CN 105652858A CN 201610201363 A CN201610201363 A CN 201610201363A CN 105652858 A CN105652858 A CN 105652858A
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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
- G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
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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
- G05B2219/23—Pc programming
- G05B2219/23336—Identification of program, application, device to be controlled
Abstract
The invention discloses an OBD (on-board diagnostics) equipment identification method and an OBD equipment identification system based on data request intervals. The OBD equipment identification method includes: receiving OBD product request data by an upper computer, performing first feature library matching when the OBD product request data reach a specific number, obtaining a current vehicle state according to interaction with vehicle Can data, and selecting a feature library in the current state until a first matching result is obtained; when the data reach a specific number again, performing second feature library matching and obtaining a current vehicle state according to interaction with vehicle Can data until a second matching result is obtained; comparing the first matching result with the second matching result, considering that identification succeeds if the first matching result is consistent with the second matching result, and if the first matching result is inconsistent with the second matching result, performing third matching when the received data reach a specific number once more; if a third matching result is as same as any of previous results, considering that identification succeeds, and if not, considering that identification fails, and so on. By the OBD equipment identification method and the OBD equipment identification system based on the data request intervals, current vehicle writing parameters including whether fault codes exist or not can be known according to user needs.
Description
Technical field
The invention belongs to OBD apparatus field, specifically a kind of OBD device identification method based on request of data interval and system.
Background technology
OBD is the abbreviation of English On-BoardDiagnostics, and translator of Chinese is " OBD ". Realizing vehicle intellectualized, the preposition standard configuration of vehicle and rear dress OBD product are two big approach. Not having Intellectualized standard configuration vehicle, the important feasible selection especially of OBD product for low and middle-end vehicle etc., by OBD terminal+mobile phone A PP+ background system service, low cost realizes the functions such as data acquisition, data analysis, result presentation. Certain basis is laid, it is necessary to identify the kind of OBD equipment, but not yet discover how to identify method or the system of OBD equipment at present for the follow-up exploitation to data.
Summary of the invention
The present invention is directed to problem above, it is proposed that a kind of OBD device identification method based on request of data interval and system, can recognise that insertion vehicle OBD equipment, allow user have certain understanding to inserting OBD equipment. Subsequent user can arrange OBD product blacklist, and white list has certain effect.
On the one hand, the invention provides the OBD device identification method based on request of data interval, including:
When S1:OBD product inserts vehicle, OBD product sends request data to vehicle, and request data communicates between Can bus with the forms of broadcasting, therefore host computer can receive the response to OBD product requests data of request data and vehicle;
S2: host computer receives OBD product requests data, when data reach a certain amount of time, carry out feature database first time coupling, vehicle's current condition is obtained according to the Can data interaction with vehicle, select feature database under current state, mate with currently received data with the product requests interval under feature database successively, until obtaining primary matching result;
S3: when data reach a certain amount of again, carry out feature database second time coupling, obtaining vehicle's current condition according to the Can data interaction with vehicle, mating with currently received data with the product requests interval under feature database successively, until obtaining secondary matching result;
S4: first time matching result contrasts with second time matching result, if unanimously, it is believed that identify successfully, if differing, carry out third time coupling when receiving data and reaching again a certain amount of, if having and identical result before, then think and identify successfully, if unsuccessful, then proceed coupling.
Concrete, if this method also included match time more than 3-4 minute, then newly-built feature database, list new OBD product in.
Concrete, request data is request rotary speed data.
Concrete, step S2 carries out setting up feature database as follows:
A, host computer send request rotary speed data to vehicle;
B, judge data recovery state:
If no data is replied, then vehicle is non-power-up state;
If there being data recovery, and numerical value is 0, then vehicle is power-up state;
If there being data recovery, and numerical value is not 0, then vehicle is sparking state;
C, statistics inhomogeneity request of data interval, be recorded as the request of data spaced features storehouse that do not power on corresponding to OBD product, the request of data that powers on spaced features storehouse and sparking request of data spaced features storehouse respectively.
More specifically, in step S2-S4, carry out feature database first time coupling when data reach 20-30 time; Feature database second time coupling is carried out when data reach 50-70 time; Increase 20-30 time later every time.
On the other hand, present invention also offers a kind of OBD equipment identification system based on request of data interval, including:
OBD product, sends request data to vehicle;
OBD threeway, monitors data mutual between OBD product and vehicle, data mutual between host computer and vehicle respectively;
Host computer, carries out feature database coupling according to OBD product requests data;
Onboard diagnostic system, the operation conditions of monitoring electromotor and the duty of exhaust gas aftertreatment system, it has been found that discharge the situation that exceeds standard, then send warning;
Described OBD threeway is connected with OBD product, host computer, onboard diagnostic system respectively.
Further, described OBD threeway is connected by OBD extended line with onboard diagnostic system.
Further, described OBD threeway is connected by OBD extended line with OBD product.
More entering further, OBD threeway and host computer carry out data interaction by Can bus node.
Due to the fact that the above technical method of employing, it is possible to obtain following technique effect: energy real-time reception OBD product data of the present invention, lay certain basis for the follow-up exploitation to data; Can quickly identify insertion vehicle OBD product, allow user have certain understanding to inserting OBD product, facilitate user setup OBD product blacklist and white list; Can be that help is played in the interception of follow-up OBD product blacklist. According to user's request, the present invention can know that parameter currently write from memory by vehicle, included whether DTC etc.; Or else need in OBD product situation it is known that more current parameters of vehicle etc.
Accompanying drawing explanation
Technical scheme for clearer explanation embodiments of the invention or prior art, introduce the accompanying drawing used required in embodiment or description of the prior art is done one simply below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of the OBD device identification method based on request of data interval;
Fig. 2 is the structured flowchart of the OBD equipment identification system based on request of data interval;
Fig. 3 is for setting up feature database flow chart.
Detailed description of the invention
For making the purpose of embodiments of the invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear complete description:
Embodiment 1
Based on the OBD device identification method at request of data interval, including:
When S1:OBD product inserts vehicle, OBD product sends request data to vehicle, and request data communicates between Can bus with the forms of broadcasting, therefore host computer can receive the response to OBD product requests data of request data and vehicle;
S2: host computer receives OBD product requests data, when data reach 20 times time, carry out feature database first time coupling, vehicle's current condition is obtained according to the Can data interaction with vehicle, select feature database under current state, mate with currently received data with the product requests interval under feature database successively, until obtaining primary matching result;
Concrete, it is carry out as follows setting up feature database:
A, host computer send request rotary speed data to vehicle;
B, judge data recovery state:
If no data is replied, then vehicle is non-power-up state;
If there being data recovery, and numerical value is 0, then vehicle is power-up state;
If there being data recovery, and numerical value is not 0, then vehicle is sparking state;
C, statistics inhomogeneity request of data interval, be recorded as the request of data spaced features storehouse that do not power on corresponding to OBD product respectively, power on statistical data requesting interval feature database with sparking statistical data requesting interval feature database.
S3: when data reach 50 times, carry out feature database second time coupling, obtaining vehicle's current condition according to the Can data interaction with vehicle, mating by the product data requesting interval under feature database and currently received data successively, until obtaining secondary matching result;
S4: first time matching result contrasts with second time matching result, if unanimously, it is believed that identify successfully, if differing, carry out third time coupling when receiving data and reaching 70 times, if having and identical result before, then think and identify successfully, if unsuccessful, then proceed coupling.
S5: if match time was more than 3-4 minute, then newly-built feature database, list new OBD product in.
On the other hand, present invention also offers a kind of OBD equipment identification system based on request of data interval, including:
OBD product, sends request data to vehicle;
OBD threeway, monitors data mutual between OBD product and vehicle, data mutual between host computer and vehicle respectively;
Host computer, carries out feature database coupling according to OBD product requests data;
Onboard diagnostic system, the operation conditions of monitoring electromotor and the duty of exhaust gas aftertreatment system, it has been found that discharge the situation that exceeds standard, then send warning;
Described OBD threeway is connected with onboard diagnostic system, OBD product respectively by OBD extended line; OBD threeway and host computer carry out data interaction by Can bus node.
Embodiment 2
Based on the OBD device identification method at request of data interval, including:
When S1:OBD product inserts vehicle, OBD product sends request rotary speed data to vehicle, and request rotary speed data communicates between Can bus with the forms of broadcasting, therefore host computer receives request rotary speed data and the vehicle response to OBD product requests rotary speed data;
S2: host computer receives OBD product requests rotary speed data, when data reach 30 times time, carry out feature database first time coupling, vehicle's current condition is obtained according to the Can data interaction with vehicle, select feature database under current state, mate with currently received data with the product requests interval under feature database successively, until obtaining primary matching result;
Concrete, it is carry out as follows setting up feature database:
A, host computer send request rotary speed data to vehicle;
B, judge data recovery state:
If no data is replied, then vehicle is non-power-up state;
If there being data recovery, and numerical value is 0, then vehicle is power-up state;
If there being data recovery, and numerical value is not 0, then vehicle is sparking state;
C, statistics inhomogeneity request of data interval, be recorded as the request of data spaced features storehouse that do not power on corresponding to OBD product, the request of data that powers on spaced features storehouse and sparking request of data spaced features storehouse respectively.
S3: when data reach 70 times, carry out feature database second time coupling, obtaining vehicle's current condition according to the Can data interaction with vehicle, mating by the product data requesting interval under feature database and currently received data successively, until obtaining secondary matching result;
S4: first time matching result contrasts with second time matching result, if unanimously, it is believed that identify successfully, if differing, carry out third time coupling when receiving data and reaching 100 times, if having and identical result before, then think and identify successfully, if unsuccessful, then proceed coupling.
S5: if match time was more than 3-4 minute, then newly-built feature database, list new OBD product in.
On the other hand, present invention also offers a kind of OBD equipment identification system based on request of data interval, including:
OBD product, sends request rotary speed data to vehicle;
OBD threeway, monitors data mutual between OBD product and vehicle, data mutual between host computer and vehicle respectively;
Host computer, carries out feature database coupling according to OBD product requests rotary speed data;
Onboard diagnostic system, the operation conditions of monitoring electromotor and the duty of exhaust gas aftertreatment system, it has been found that discharge the situation that exceeds standard, then send warning;
Described OBD threeway is connected with onboard diagnostic system, OBD product respectively by OBD extended line; Described OBD threeway and host computer carry out data interaction by Can bus node.
Requesting interval refers to that between identical data, request time is poor, for instance being designated as between t1, b and b between a and a and be designated as t2, the time of final homogeneous data averages as requesting interval;
Above-mentioned OBD product can be that Tengxun road is precious; Energy real-time reception OBD product data of the present invention, lay certain basis for the follow-up exploitation to data; Can quickly identify insertion vehicle OBD product, allow user have certain understanding to inserting OBD product, facilitate user setup OBD product blacklist and white list.
The above; it is only the present invention preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the technical scope of present disclosure; it is equal to replacement according to technical scheme and inventive concept thereof or is changed, all should be encompassed within protection scope of the present invention.
Claims (9)
1. based on the OBD device identification method at request of data interval, it is characterised in that including:
When S1:OBD product inserts vehicle, OBD product sends request data to vehicle, and request data communicates between Can bus with the forms of broadcasting, therefore host computer receives the response to OBD product requests data of request data and vehicle;
S2: host computer receives OBD product requests data, when data reach a certain amount of time, carry out feature database first time coupling, vehicle's current condition is obtained according to the Can data interaction with vehicle, select feature database under current state, mate with currently received data with the product requests interval under feature database successively, until obtaining primary matching result;
S3: when data reach a certain amount of again, carry out feature database second time coupling, obtaining vehicle's current condition according to the Can data interaction with vehicle, mating with currently received data with the product requests interval under feature database successively, until obtaining secondary matching result;
S4: first time matching result contrasts with second time matching result, if unanimously, it is believed that identify successfully, if differing, carry out third time coupling when receiving data and reaching again a certain amount of, if having and identical result before, then think and identify successfully, if unsuccessful, then proceed coupling.
2. the OBD device identification method based on request of data interval according to claim 1, it is characterised in that if this method also included match time more than 3-4 minute, then newly-built feature database, list new OBD product in.
3. the OBD device identification method based on request of data interval according to claim 1, it is characterised in that request data is request rotary speed data.
4. the OBD device identification method based on request of data interval according to claim 1, it is characterised in that step S2 carries out setting up feature database as follows:
A, host computer send request rotary speed data to vehicle;
B, judge data recovery state:
If no data is replied, then vehicle is non-power-up state;
If there being data recovery, and numerical value is 0, then vehicle is power-up state;
If there being data recovery, and numerical value is not 0, then vehicle is sparking state;
C, statistics inhomogeneity request of data interval, be recorded as the request of data spaced features storehouse that do not power on corresponding to OBD product, the request of data that powers on spaced features storehouse and sparking request of data spaced features storehouse respectively.
5. the OBD device identification method based on request of data interval according to claim 1, it is characterised in that in step S2-S4, carries out feature database first time coupling when data reach 20-30 time; Feature database second time coupling is carried out when data reach 50-70 time; Increase 20-30 time later every time.
6. based on the OBD equipment identification system at request of data interval, it is characterised in that including:
OBD product, sends request data to vehicle;
OBD threeway, monitors data mutual between OBD product and vehicle, data mutual between host computer and vehicle respectively;
Host computer, carries out feature database coupling according to OBD product requests data;
Onboard diagnostic system, the operation conditions of monitoring electromotor and the duty of exhaust gas aftertreatment system, it has been found that discharge the situation that exceeds standard, then send warning;
Described OBD threeway is connected with OBD product, host computer, onboard diagnostic system respectively.
7. the OBD equipment identification system based on request of data interval according to claim 6, it is characterised in that described OBD threeway is connected by OBD extended line with onboard diagnostic system.
8. the OBD equipment identification system based on request of data interval according to claim 6, it is characterised in that described OBD threeway is connected by OBD extended line with OBD product.
9. the OBD equipment identification system based on request of data interval according to claim 6, it is characterised in that described OBD threeway and host computer carry out data interaction by Can bus node.
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| CN201610201363.0A CN105652858B (en) | 2016-03-31 | 2016-03-31 | OBD device identification methods and system based on request of data interval |
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