CN104678993A - Automobile wireless diagnosis system and method based on WIFI - Google Patents
Automobile wireless diagnosis system and method based on WIFI Download PDFInfo
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- CN104678993A CN104678993A CN201510124997.6A CN201510124997A CN104678993A CN 104678993 A CN104678993 A CN 104678993A CN 201510124997 A CN201510124997 A CN 201510124997A CN 104678993 A CN104678993 A CN 104678993A
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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
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Abstract
The invention provides an automobile wireless diagnosis system and method based on WIFI. The automobile wireless diagnosis system comprises a wireless diagnosis vehicle-mounted terminal and a mobile terminal, wherein a wireless diagnosis vehicle-mounted terminal is connected with the mobile terminal in a WIFI mode. A fault diagnosis program is installed inside the mobile terminal, diagnosis information can be acquired in the WIFI mode, and corresponding problems can be solved through corresponding operation. By adopting the automobile wireless diagnosis system and method based on WIFI, a user can check the situation of an automobile at any time, automobile fault data can be obtained, relevant operators can check, refer and analyze faults conveniently, and then corresponding measures can be taken. The automobile wireless diagnosis system and method are low in network cost, high in transmission efficiency and wide in application prospect.
Description
Technical field
The invention belongs to automobile wireless diagnostic field, especially relate to a kind of automobile wireless diagnostic system based on WIFI and method.
Background technology
Along with the development of network and the communication technology, the demand of user to radio communication grows with each passing day, and WIFI relies on the advantage of its uniqueness to obtain generally to approve, demonstrate great application prospect, WIFI has become the mainstream standard of current wireless network access.Domestic and international many areas both provide WIFI signal covering domain, as long as the electronic product carried with has WIFI terminal, and just accessible internet.
Current automotive diagnostic system mainly adopts wired form, and Maintenance Engineer needs to open vehicle body, finds drive recorder to carry out the analysis of the laggard every trade car data of wiring.Such analysis mode efficiency is low, high to the technical requirement of slip-stick artist.The development of WiFi technology has promoted its development in automobilism data monitoring field.Automobile wireless diagnostic systems module is convenient to install, use, manage and recombinate.
WIFI need not connect up, wide coverage, and current powerful device transmission range can reach 6.5 kilometers.The fast 6Mbps-22Mbps of WiFi technology transmission speed.WiFi technology is widely used, and notebook, panel computer and mobile phone etc. have wireless support.The application of automobile wireless diagnostic systems makes slip-stick artist open vehicle body, utilizes notebook, mobile phone etc. just can detect the data such as the logout of automobile.In parking factory, Maintenance Engineer can check the data of multiple vehicle from host computer, and its work efficiency is improved greatly.The automated back-up of data can be realized, convenient inquiry and tracing management.
The related personnel such as research and development, after-sales service use the mobile terminals such as notebook computer, mobile phone, panel computer by the correlation behavior parameter such as diagnostic data, battery, electric moter voltage, electric current, temperature of WIFI network Real-time Collection integral new-energy passenger, and the service data of car load.Related personnel can check other significant datas of diagnostic data and car load easily, provides data analysis to technological improvement and after-sales service, greatly facilitates research and development and link after sale.
The different role such as slip-stick artist, sales engineer, research and development slip-stick artist, supvr can select different mobile terminals according to respective different demand after sale, as android system mobile phone, iphone, Pad, PC, gets information about data useful separately.User as required, can utilize the software of mobile terminal to operate integral new-energy passenger diagnostic system, such as, removes diagnostic trouble code.
Summary of the invention
In view of this, the present invention is intended to propose a kind of automobile wireless diagnostic system based on WIFI and method, to solve the wireless diagnostics to automobile, meets actual demand.
For achieving the above object, technical scheme of the present invention is achieved in that
Based on an automobile wireless diagnostic system of WIFI, it is characterized in that: comprise wireless diagnostics car-mounted terminal, mobile terminal; Described wireless diagnostics car-mounted terminal comprises processor, CAN, WIFI communication module, SD card module for reading and writing, IC-card module for reading and writing, USB module for reading and writing, clock circuit module and hardware watchdog module; Described processor and described CAN, WIFI communication module, SD card module for reading and writing, IC-card module for reading and writing, USB module for reading and writing, clock circuit module, hardware watchdog model calling; Described mobile terminal comprises among computing machine or panel computer or smart mobile phone or three two or three; Described mobile terminal is for showing failure message, data and CAN load factor; Described wireless diagnostics car-mounted terminal is connected with described mobile terminal by described WIFI communication module.
Further, described processor is ARM7.
Further, described smart mobile phone display critical failure information and data, and carry out fault prompting.
Further, described panel computer display detailed trouble information and data, for after-sales service, personnel judge vehicle trouble rapidly, determine maintenance policy.
Further, described computing machine installation database, carries out data storage, display, inquiry and derivation, is applicable to developer's monitoring vehicle running status, improves Car design work.
Further, described database is H2 database.
Relative to prior art, a kind of automobile wireless diagnostic system based on WIFI of the present invention has following advantage:
(1) the present invention is based on the automobile wireless realizing of the diagnosis system of WIFI medium and long distance data diagnosis, solving most of diagnostic equipment is all problem based on rigid line or short distance wireless data communication, network cost is low, and transfer efficiency is high, is with a wide range of applications.
(2) mobile terminal comprises computing machine, panel computer and mobile phone, and different mobile devices is applicable to different librarian uses, improves the applicability of onboard diagnostic system.
Another object of the present invention is to propose a kind of automobile wireless diagnostic method based on WIFI, to realize the efficient diagnosis to vehicle failure.
For achieving the above object, technical scheme of the present invention is achieved in that
Based on an automobile wireless diagnostic method of WIFI, comprise the steps:
Step 1: write vehicle diagnosis application program in mobile terminal device;
Step 2: wireless diagnostics car-mounted terminal gathers automobile fault information data by CAN, data is stored in SD card simultaneously;
Step 3: by WIFI network real-time diagnostic data is sent to mobile terminal;
Step 4: the diagnostic data that mobile terminal storage receives;
Step 5: start mobile terminal vehicle diagnosis program, smart mobile phone display critical failure information and data, and carry out fault prompting, calculate CAN load factor simultaneously;
Step 6: start mobile terminal vehicle diagnosis program, panel computer display detailed trouble information and data, for after-sales service, personnel judge vehicle trouble rapidly, determine maintenance policy, calculate CAN load factor simultaneously;
Step 7: start mobile terminal vehicle diagnosis program, computing machine installation database, carries out data storage, display, inquiry and derivation, is applicable to developer's monitoring vehicle running status, improves Car design work, calculates CAN load factor simultaneously; ;
Step 8: user carries out data analysis for the information received.
Further, the method calculating CAN load factor in described step 5,6,7 is as follows:
8bit＝1byte
CAN baud rate: Baud rate (Kbit/s)
Same frame packet sending intervals: t (s)
Message data frame byte length: L
Message ID and information: 5 (byte)
Message frame end to end and check bit: 10 (byte)
The theoretical message number sent: 1/t in 1s
CPU in terminal can calculate the quantity of the different messages gathered in 1s, and in this ID 1s, quantity is X, and the momentary load rate that can calculate CAN thus per second is
Momentary load rate per second is recorded in the flash chip of terminal inner by terminal again, per secondly behind 1 minute of starting up of terminal all draws Rate of average load the data in 1 minute are before carried out iterative computation.
Further, in described step 8, data analysis process is as follows:
By the data importing in database and SD card in upper computer software; user selects a certain data genaration time-domain curve figure; also several parameters can be chosen to carry out time-domain curve generation, and wherein positional information is by directly changing into map reference location, forms track of vehicle playback simultaneously.
User is parameters threshold value according to demand, if exceed standard, highlighted showing can help the quick problem identificatioin time point of user, user's vehicle traveling-position information on other data in this time period and map of observing help its understand vehicle at this moment between the information such as vehicle condition in section and road conditions, choose information parameter to generate floor data analysis report the most at last and submit on probation for user.
Relative to prior art, a kind of automobile wireless diagnostic method based on WIFI of the present invention has following advantage:
Automobile wireless diagnostic method based on WIFI of the present invention can realize the real-time diagnosis to vehicle failure, the information such as stored parameter, data simultaneously, for related personnel's inquiry, reference, analyze, and calculate CAN load factor, reflect the data traffic in current automotive CAN network intuitively, and carry out data analysis, for fault handling provides foundation, experimenter is pinpointed the problems fast timely, improves efficiency of research and development.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the system construction drawing described in the embodiment of the present invention;
Fig. 2 is the hardware structure diagram of the wireless diagnostics car-mounted terminal described in the embodiment of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, a kind of automobile wireless diagnostic system based on WIFI of the present invention, comprises wireless diagnostics car-mounted terminal, mobile terminal; Wireless diagnostics car-mounted terminal is connected with mobile terminal by WIFI.
As shown in Figure 2, the hardware configuration of wireless diagnostics car-mounted terminal of the present invention, comprises processor, CAN, WIFI communication module, SD card module for reading and writing, IC-card module for reading and writing, USB module for reading and writing, clock circuit module and hardware watchdog module; Processor and CAN, WIFI communication module, SD card module for reading and writing, IC-card module for reading and writing, USB module for reading and writing, clock circuit module, hardware watchdog model calling; Mobile terminal comprises computing machine, smart mobile phone and panel computer.
Onboard wireless diagnosis terminal is the key component of automobile wireless diagnostic system really, the data such as electric machine controller failure message, engine failure information, CMS failure message, BMS failure message are gathered by CAN, by WIFI network real-time gather information be sent to mobile terminal, when not accessing mobile terminal, the data of CAN module collection will be stored in SD, can import the lane database of computing machine in case of need.Car-mounted terminal, while sending data by WIFI, is stored into the data gathered in SD card with txt file form; Data in SD card directly can import the wireless diagnostics lane database of computing machine.
Mobile terminal comprises the mobile devices such as computing machine, smart mobile phone, panel computer, and different mobile devices is applicable to different librarian uses.Smart mobile phone display critical failure information and data, and carry out fault prompting.Panel computer display detailed trouble information and data, for after-sales service, personnel judge vehicle trouble rapidly, determine maintenance policy.Computing machine installation database, carries out data storage, display, inquiry and derivation, is applicable to developer's monitoring vehicle running status, improves Car design work.
Present invention also offers a kind of automobile wireless diagnostic method based on WIFI, comprise the steps:
Step 1: write vehicle diagnosis application program in mobile terminal device;
Step 2: wireless diagnostics car-mounted terminal gathers automobile fault information data by CAN, data is stored in SD card simultaneously;
Step 3: by WIFI network real-time diagnostic data is sent to mobile terminal;
Step 4: the diagnostic data that mobile terminal storage receives;
Step 5: start mobile terminal vehicle diagnosis program, smart mobile phone display critical failure information and data, and carry out fault prompting, calculate CAN load factor simultaneously; The method calculating CAN load factor is as follows:
8bit＝1byte
CAN baud rate: Baud rate (Kbit/s)
Same frame packet sending intervals: t (s)
Message data frame byte length: L
Message ID and information: 5 (byte)
Message frame end to end and check bit: 10 (byte)
The theoretical message number sent: 1/t in 1s
CPU in terminal can calculate the quantity of the different messages gathered in 1s, and in this ID 1s, quantity is X, and the momentary load rate that can calculate CAN thus per second is
Momentary load rate per second is recorded in the flash chip of terminal inner by terminal again, per secondly behind 1 minute of starting up of terminal all draws Rate of average load the data in 1 minute are before carried out iterative computation.
Step 6: start mobile terminal vehicle diagnosis program, panel computer display detailed trouble information and data, for after-sales service, personnel judge vehicle trouble rapidly, determine maintenance policy, and calculate CAN load factor, computing method are with step 5 simultaneously;
Step 7: start mobile terminal vehicle diagnosis program, computing machine installation database, carries out data storage, display, inquiry and derivation, be applicable to developer's monitoring vehicle running status, improve Car design work, calculate CAN load factor, computing method are with step 5 simultaneously;
Step: 8: user carries out data analysis for the information received; analytic process is as follows: by the data importing in database and SD card in upper computer software; user selects a certain data genaration time-domain curve figure; also several parameters can be chosen to carry out time-domain curve generation simultaneously; wherein positional information is by directly changing into map reference location, forms track of vehicle playback.
User is parameters threshold value according to demand, if exceed standard, highlighted showing can help the quick problem identificatioin time point of user, user's vehicle traveling-position information on other data in this time period and map of observing help its understand vehicle at this moment between the information such as vehicle condition in section and road conditions, choose information parameter to generate floor data analysis report the most at last and submit on probation for user.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. based on an automobile wireless diagnostic system of WIFI, it is characterized in that: comprise wireless diagnostics car-mounted terminal, mobile terminal; Described wireless diagnostics car-mounted terminal comprises processor, CAN, WIFI communication module, SD card module for reading and writing, IC-card module for reading and writing, USB module for reading and writing, clock circuit module and hardware watchdog module; Described processor and described CAN, WIFI communication module, SD card module for reading and writing, IC-card module for reading and writing, USB module for reading and writing, clock circuit module, hardware watchdog model calling; Described mobile terminal comprises among computing machine or panel computer or smart mobile phone or three two or three; Described mobile terminal is for showing failure message, data and CAN load factor; Described wireless diagnostics car-mounted terminal is connected with described mobile terminal by described WIFI communication module.
2. a kind of automobile wireless diagnostic system based on WIFI according to claim 1, is characterized in that: described processor is ARM7.
3. a kind of automobile wireless diagnostic system based on WIFI according to claim 1, is characterized in that: described smart mobile phone display critical failure information and data, and carries out fault prompting.
4. a kind of automobile wireless diagnostic system based on WIFI according to claim 1, is characterized in that: described panel computer display detailed trouble information and data, for after-sales service, personnel judge vehicle trouble rapidly, determine maintenance policy.
5. a kind of automobile wireless diagnostic system based on WIFI according to claim 1, it is characterized in that: described computing machine installation database, carry out data storage, display, inquiry and derivation, be applicable to developer's monitoring vehicle running status, improve Car design work.
6. a kind of automobile wireless diagnostic system based on WIFI according to claim 5, is characterized in that: described database is H2 database.
7., based on an automobile wireless diagnostic method of WIFI, it is characterized in that: comprise the steps:
Step 1: write vehicle diagnosis application program in mobile terminal device;
Step 2: wireless diagnostics car-mounted terminal gathers automobile fault information data by CAN, data is stored in SD card simultaneously;
Step 3: by WIFI network real-time diagnostic data is sent to mobile terminal;
Step 4: the diagnostic data that mobile terminal storage receives;
Step 5: start mobile terminal vehicle diagnosis program, smart mobile phone display critical failure information and data, and carry out fault prompting, calculate CAN load factor simultaneously;
Step 6: start mobile terminal vehicle diagnosis program, panel computer display detailed trouble information and data, for after-sales service, personnel judge vehicle trouble rapidly, determine maintenance policy, calculate CAN load factor simultaneously;
Step 7: start mobile terminal vehicle diagnosis program, computing machine installation database, carries out data storage, display, inquiry and derivation, is applicable to developer's monitoring vehicle running status, improves Car design work, calculates CAN load factor simultaneously;
Step 8: user carries out data analysis for the information received.
8. based on an automobile wireless diagnostic method of WIFI, it is characterized in that: the method calculating CAN load factor in described step 5,6,7 is as follows:
8bit＝1byte
CAN baud rate: Baud rate (Kbit/s)
Same frame packet sending intervals: t (s)
Message data frame byte length: L
Message ID and information: 5 (byte)
Message frame end to end and check bit: 10 (byte)
The theoretical message number sent: 1/t in 1s
CPU in terminal can calculate the quantity of the different messages gathered in 1s, and in this ID 1s, quantity is X, and the momentary load rate that can calculate CAN thus per second is
Momentary load rate per second is recorded in the flash chip of terminal inner by terminal again, per secondly behind 1 minute of starting up of terminal all draws Rate of average load the data in 1 minute are before carried out iterative computation.
9. based on an automobile wireless diagnostic method of WIFI, it is characterized in that: in described step 8, data analysis process is as follows:
By the data importing in database and SD card in upper computer software; user selects a certain data genaration time-domain curve figure; also several parameters can be chosen to carry out time-domain curve generation, and wherein positional information is by directly changing into map reference location, forms track of vehicle playback simultaneously.
User is parameters threshold value according to demand, if exceed standard, highlighted showing can help the quick problem identificatioin time point of user, user's vehicle traveling-position information on other data in this time period and map of observing help its understand vehicle at this moment between the information such as vehicle condition in section and road conditions, choose information parameter to generate floor data analysis report the most at last and submit on probation for user.
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| CN106066792A (en) * | 2016-05-25 | 2016-11-02 | 桂林电子科技大学 | A kind of software wireless remote debugging based on WiFi updates system and method |
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| CN108776469A (en) * | 2018-06-26 | 2018-11-09 | 北京长城华冠汽车技术开发有限公司 | Vehicle mounted communication module monitoring system and monitoring method |
| CN110830957A (en) * | 2019-11-20 | 2020-02-21 | 三一海洋重工有限公司 | Forklift operation data transmission method and device, forklift and computer storage medium |
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