CN101930234B - Vehicle-mounted master controller for vehicle-mounted information system and control system thereof - Google Patents
Vehicle-mounted master controller for vehicle-mounted information system and control system thereof Download PDFInfo
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- CN101930234B CN101930234B CN 201010300608 CN201010300608A CN101930234B CN 101930234 B CN101930234 B CN 101930234B CN 201010300608 CN201010300608 CN 201010300608 CN 201010300608 A CN201010300608 A CN 201010300608A CN 101930234 B CN101930234 B CN 101930234B
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Abstract
The invention relates to a vehicle-mounted master controller for a vehicle-mounted information system and a control system thereof. The vehicle-mounted master controller comprises a master control unit, and a controller area network (CAN) interface circuit, an voice-frequency circuit, a global positioning system (GPS) circuit, a Bluetooth hands-free circuit, a liquid crystal display interface, a universal serial bus (USB) interface circuit, a secure digital (SD) card interface, a joint test action group (JTAG) interface and a reset circuit which are arranged at the periphery of the master control unit, wherein the master control unit consists of a control chip integrated with an extended synchronous dynamic random access memory (SDRAM) and a flash. The control system of the vehicle-mounted master controller comprises a vehicle condition information data acquisition control unit, a GPRS technology-based automobile failure alarm control unit, a video processing control unit and a vehicle-mounted master control unit, wherein the vehicle condition information data acquisition control unit finishes the acquisition and transmission of vehicle condition information data; and the GPRS technology-based automobile failure alarm control unit performs remote alarm according to remote alarm information transmitted by the vehicle-mounted master controller unit. The master controller and the control system have multiple functions and automobile maintenance suggestions can be given to an automobile owner.
Description
Technical field
The present invention relates to a kind of inter-vehicle information system.Particularly relate to a kind of control system with vehicle-mounted master controller that is used for inter-vehicle information system of vehicle condition diagnosis and vehicle condition data management function.
Background technology
Along with new material, new technology, the utilization of new technology in automobile production, manufacture process, the application of electronic technology is more and more extensive on automobile, the electronic degree of automobile is more and more higher, and particularly after automobile was used microcomputer, automobile had entered the automatically controlled epoch.The development of the technology such as radio communication, automatically control, processor and detection of dynamic and maturation provide technical support for the design of inter-vehicle information system simultaneously.Inter-vehicle information system is a kind of novel vehicle electronics, and oneself has formed product through having done years of researches in this respect at present more external well-known automobile production manufacturers.Inter-vehicle information system comprises that mainly automobile information shows and fault diagnosis two large classes.It is to show various figures, image information by display screen that automobile information shows, as: electronic chart, automobile position etc.Vehicle fault diagnosis system is by the failure message of the Internet Transmission all parts of automotive interior, by diagnostics interface to outside the transmission of data, special-purpose fault diagnosis equipment obtains data by this interface, vehicle complete vehicle is detected, find out the position and the reason that break down, and show by specific symbol and to tell how the repairman carries out quick, correct repairing.Along with the development of inter-vehicle information system, inter-vehicle information system also possesses the functions such as multimedia recreation except above-mentioned functions.At present external inter-vehicle information system is as the important component part of automotive electronics, mainly as the configuration of high-end automobile.There is this series products in a lot of automobile production producer of Japan, and the companies such as Toyota, Panasonic have all developed the vehicle mounted guidance product of oneself.Also there are the product of oneself in other developed countries such as the U.S., Germany.For example, BMW i-drive multimedia controlled system, its function comprises adjusting, radar for backing car, amusement and the online of navigation, air-conditioning.Domestic existing inter-vehicle information system also mainly is configured on the high-end automobile.Compare external inter-vehicle information system, many critical functions lack, such as the in-vehicle information diagnostic function of vehicle, standby maintenance function etc.And along with the progress of automotive electronic technology, more and more higher to the functional requirement of inter-vehicle information system, need integrated positioning navigation, fault demonstration and many-sided functions such as diagnosis, amusement, the multifunctional vehicle mounted infosystem of realization high integration.
Summary of the invention
Technical matters to be solved by this invention is, provides a kind of integrated positioning navigation feature, recreational facilities, bluetooth handsfree, travel condition of vehicle information to show, fault shows, report to the police and gather when driving the control system that vehicle condition information is carried out the vehicle-mounted master controller that is used for inter-vehicle information system of the functions such as condition diagnosing, automotive performance assessment based on the remote failure of GPRS.
The technical solution adopted in the present invention is: a kind of control system of the vehicle-mounted master controller for inter-vehicle information system, vehicle-mounted master controller is the vehicle-mounted master controller that is used in the inter-vehicle information system with ST10 ECU (Electrical Control Unit) and GPRS alarm unit, and described vehicle-mounted master controller includes: main control unit and the CAN interface circuit, voicefrequency circuit, GPS circuit, bluetooth handsfree circuit, LCD Interface, usb circuit, SD card interface, jtag interface and the reset circuit that are arranged at the main control unit periphery.
Described main control unit is to be made of the SDRAM of integrated expansion and the control chip of FLASH.
Described control chip is that the corresponding respectively SPI interface that passes through itself connects the CAN interface circuit, IIS interface by itself connects and voicefrequency circuit, serial ports UART by itself connects the GPS circuit, serial ports UART by itself connects the bluetooth handsfree circuit, described SD card interface, adopt the inner integrated SD/MMC controller of main control unit, expand large capacity SD card, realize the data storages such as GPS map; Described usb circuit adopts the inner integrated USB_Host of main control unit, is used for mobile storage, and vehicle condition information is preserved; Described LCD Interface and jtag interface are integrated in control chip inside, and control chip extracts and connects corresponding circuit by LCD Interface is connected interface signal line with jtag interface.
Described CAN interface circuit includes: the CAN controller that is connected and communicates with the SPI interface of control chip, the photoelectrical coupler that receives and send that is connected with the CAN controller, the CAN transceiver (21) that links to each other with photoelectrical coupler and the CAN bus that links to each other with the CAN transceiver.
The control system of vehicle-mounted master controller, include the vehicle condition information data and gather control module, automobile failure alarm control module based on the GPRS technology, Video processing control module, vehicle-mounted Main Control Unit, described vehicle condition information data gathers control module, finish the collection of vehicle condition information data, transmit, based on the automobile failure alarm control module of GPRS technology, carry out remote alarms according to the remote alarms information that vehicle-mounted Main Control Unit sends.
Described vehicle-mounted Main Control Unit includes: contain the multimedia recreation functional module of GPS navigation, movie, browsing pictures, music playing, vehicle Bluetooth hand-free system, and vehicle condition diagnosis and vehicle condition data management function module.
The diagnosis of described vehicle condition includes with vehicle condition data management function module: data transmission method, show vehicle body status method, fault and vehicle condition database, vehicle condition diagnostic method, automobile failure alarm method and automotive performance appraisal procedure in real time.
Described fault and vehicle condition database have: preservation and the management of fault sample data, characteristic parameter historical data and vehicle condition data, and fault diagnosis model parameter, assessment models parameter, Fault Diagnosis Database.
Described vehicle condition diagnosis comprises the steps: with vehicle condition data management function module operation master routine
1) judges whether vehicle condition has fault, is to enter the 8th step, otherwise enter the 2nd step;
2) judging whether to receive data, is to enter the 3rd step, otherwise returns the 1st step;
3) show real-time vehicle body state;
4) preserve the vehicle condition data;
5) judge whether to carry out the automotive performance assessment, be to enter the 6th step, otherwise enter the 7th step;
6) enter automotive performance assessment subroutine;
7) judging whether to withdraw from, is to finish, and begins otherwise return the 1st step;
8) enter the automobile failure diagnosis subroutine;
9) enter the 7th step after the preservation fault sample data.
Described automotive performance assessment subroutine comprises following flow process:
1) calls the assessment models parameter;
2) calculate present engine power;
3) calculate current oil consumption rate;
4) call historical vehicle condition data;
5) calculation engine power variation tendency;
6) calculate the oil consumption rate variation tendency;
7) output maintenance suggestion;
8) return master routine.
Described automobile failure diagnosis subroutine comprises following flow process:
1) system of selecting fault to occur;
2) select phenomenon of the failure;
3) whether the failure judgement reason is definite, is to enter next step, otherwise carries out the reasoning analysis, then returns previous step;
4) fix a breakdown;
5) the maintenance suggestion is proposed;
6) return master routine.
Described reasoning analysis is to finish by following flow process:
1) determines the affiliated pattern of fault, and find the corresponding node of current failure symptom;
2) judge whether corresponding node is father node, be to enter next step after finding child node to add the ingress group, otherwise directly enter next step;
3) take out regular NO from node ID, add the rule group;
4) find regular former piece and consequent in the rule list in Fault Diagnosis Database;
5) the judgement state is normal, normally enters for the 11st step, otherwise enters next step;
6) rule condition is failure cause, adds the failure cause array;
7) find the maintenance of fault to advise in the conclusion table in Fault Diagnosis Database;
Whether be empty, for sky enters next step, otherwise returned for the 6th step if 8) continuing failure judgement reason array;
9) whether decision node is empty, is into down going on foot, going on foot otherwise return the 3rd;
10) show the fault conclusion, and finish;
11) whether the judgment rule group is empty, is to enter next step, otherwise returns for the 4th step;
12) whether the decision node group is empty, is to enter next step, otherwise returns for the 3rd step;
13) diagnose without conclusion, and finish.
The control system of the vehicle-mounted master controller for inter-vehicle information system of the present invention, it is a kind of collection location navigation function, recreational facilities, bluetooth handsfree, the demonstration of travel condition of vehicle information, fault show, report to the police and gather when driving vehicle condition information based on the remote failure of GPRS and carry out the device that the functions such as condition diagnosing, automotive performance assessment are integrated, and can also provide the Motor Maintenance maintenance suggestion for the car owner simultaneously.
Superiority of the present invention is: 1. based on integrated positioning navigation feature, the demonstration of travel condition of vehicle information, fault demonstration and diagnosis, multimedia recreation, bluetooth handsfree, the vehicle body real-time information demonstration of ARM and high integration ARM multimedia recreation and the data processing unit design proposal of carrying out automobile failure alarm and automotive performance assessment according to vehicle condition information; 2. designed based on the onboard wireless sound remote of GPRS and reported to the police, applied for service function; 3. adopt the video processing unit design of special-purpose multifunctional liquid crystal display drive chip, can automatically switch according to switching signal and realize that vehicle backing backsight AV video acquisition shows and the interface display of ARM multimedia recreation and data processing unit.4. gather when driving vehicle condition information and carry out the vehicle condition diagnosis, output alarm information and maintenance suggestion are for the user provides automobile fault information directly perceived.5. gather when driving the device that vehicle condition information is carried out the functions such as automotive performance assessment, for the user provides the Motor Maintenance maintenance suggestion.
Description of drawings
Fig. 1 is the general structure schematic diagram of inter-vehicle information system involved in the present invention;
Fig. 2 is vehicle-mounted main controller circuit structural drawing of the present invention;
Fig. 3 is vehicle-mounted main controller circuit structural drawing of the present invention;
Fig. 4 is the circuit structure diagram of CAN interface circuit of the present invention;
Fig. 5 is the circuit structure diagram of GPS circuit of the present invention;
Fig. 6 is the circuit structure diagram of voicefrequency circuit of the present invention;
Fig. 7 is the circuit structure diagram of bluetooth handsfree circuit of the present invention;
Fig. 8 is the structural drawing of fault of the present invention and vehicle condition database;
Fig. 9 is the main flow chart of vehicle condition diagnosis of the present invention and vehicle condition data management module;
Figure 10 is automotive performance estimation flow figure of the present invention;
Figure 11 is automobile failure diagnosis process flow diagram of the present invention;
Figure 12 is fault diagnosis reasoning process flow diagram of the present invention.
Wherein:
Embodiment
Make a detailed description below in conjunction with embodiment and the accompanying drawing control system to the vehicle-mounted master controller for inter-vehicle information system of the present invention.
As shown in Figure 1, vehicle-mounted master controller for inter-vehicle information system of the present invention, be the vehicle-mounted master controller 1 that is used in the inter-vehicle information system with ST10 ECU (Electrical Control Unit) 2 and GPRS alarm unit 3, described vehicle-mounted master controller 1 includes: main control unit 4 and the CAN interface circuit 5, voicefrequency circuit 6, GPS circuit 7, bluetooth handsfree circuit 8, LCD Interface 9, usb circuit 10, SD card interface 11, jtag interface 12 and the reset circuit 13 that are arranged at main control unit 4 peripheries.Thereby improved the integrated level of system unit, reduced to a great extent the cost of system.
As shown in Figure 3, described main control unit 4 be by the SDRAM16 of integrated expansion, 17 and the model of FLASH20 be that the control chip 18 of S3C2440 consists of.
As shown in Figure 2, described control chip 18 is that the corresponding respectively SPI interface that passes through itself connects CAN interface circuit 5, IIS interface by itself connects and voicefrequency circuit 6, and the serial ports UART connection GPS circuit 7 by itself connects bluetooth handsfree circuit 8 by serial ports UART own.Wherein, described SD card interface 11 adopts the inner integrated SD/MMC controller of S3C2440, expands large capacity SD card, realizes the data storages such as GPS map; Described usb circuit 10 adopts the inner integrated USB_Host of S3C2440, be used for mobile storage, and vehicle condition information is preserved; Described LCD Interface 9 and jtag interface 12 are integrated in control chip 18 inside, and control chip 18 extracts by the interface signal line that LCD Interface 9 is connected with jtag interface and connects corresponding circuit.
As shown in Figure 4, described CAN interface circuit 5 includes: the CAN controller 19 that is connected and communicates with the inner integrated SPI controller of control chip 18, the photoelectrical coupler that receives and send 20 that is connected with CAN controller 19, the CAN transceiver 21 that links to each other with photoelectrical coupler 20 and the CAN bus 22 that links to each other with CAN transceiver 21.Realize gathering and CAN communication based on the automobile failure alarm unit of GPRS technology with the vehicle condition information data.
Described vehicle condition information data gathers and automobile failure alarm unit based on the GPRS technology, comprises vehicle condition information data Acquisition Circuit and consists of based on the automobile failure alarm circuit of GPRS technology, and the two can connect by CAN bus interface or serial communication interface.Vehicle condition information data Acquisition Circuit design adopts the expansion of 16 8-digit microcontrollers to arrange that K line interface, CAN bus interface etc. gather the vehicle condition data and from the fault alarm information of ECU, give vehicle-mounted master controller by the CAN bus interface with above-mentioned communication, and carry out remote speech/SMS alarm according to the order of vehicle-mounted master controller by the GPRS failure alarm circuit.
Described automobile failure alarm circuit based on the GPRS technology comprises single-chip microcomputer, GPRS wireless communication module, speech function module, fault-signal receiver module the electric circuit constitute, by the control of each module of chip microcontroller.
As shown in Figure 5, the UART1 mouth that S3C2440 are adopted in 7 designs of described GPS circuit and model are that the GPS chip 23 of SDT11 is connected, and described GPS chip 23 also connects the IO interface of control chip 18, for state-detection.
As shown in Figure 6, described voicefrequency circuit 6 adopts the integrated IIS bus in control chip 18 inside, connects 8/16 external stereo audio encoding/decoding chip 25 as codec interface, realizes required acoustics.The model of described audio coding decoding chip 25 is UDA1341TS.
As shown in Figure 7, described bluetooth handsfree circuit 8 designs adopt the UART1 mouth of control chip 18S3C2440 to be connected with bluetooth module 28, realize the functions such as answer/make/secret conversation (can switch to the mobile phone communication pattern)/refuse to listen/double frequency conversion (only supporting dual-band mobile phone to use)/hang up, and power on from the function such as being dynamically connected.
The control system of vehicle-mounted master controller of the present invention, include the vehicle condition information data and gather control module, automobile failure alarm control module based on the GPRS technology, Video processing control module, vehicle-mounted Main Control Unit, described vehicle condition information data gathers control module, finish the collection of vehicle condition information data, transmit, based on the automobile failure alarm control module of GPRS technology, carry out remote alarms according to the remote alarms information that vehicle-mounted master controller sends.
Described video processing unit according to showing the display frame of selecting switching command can show vehicle-mounted master controller, also can show the car backsight picture under the reversing state.
Described vehicle-mounted Main Control Unit includes: contain the multimedia recreation functional module of GPS navigation, movie, browsing pictures, music playing, vehicle Bluetooth hand-free system, and vehicle condition diagnosis and vehicle condition data management function module.
Described GPS navigation, the function that provides mainly contains: from car location, place name search, path planning, analogue navigation, voice suggestion, address/path storage etc.
Described movie, music player, committed memory is little, supports multiple format, language.
The Image Viewer that described Photo Browser carries with Wince.
Described vehicle Bluetooth hand-free system functional module mainly is based on the Bluetooth wireless transmission technology, and adopts the mode of active searching to realize that the car phone in the car is hands-free, and function comprises: active searching car owner's bluetooth cellular phone also connects; Realize dialing/answering/refusing to receive telephone by touch screen interface; The module automatic search bluetooth cellular phone etc. that powers on.
The diagnosis of described vehicle condition includes with vehicle condition data management function module: data transmission method, show vehicle body status method, fault and vehicle condition database, vehicle condition diagnostic method, automobile failure alarm method and automotive performance appraisal procedure in real time.
Said data transmission method is finished vehicle-mounted Main Control Unit, the vehicle condition information data gathers and based on the vehicle condition information data transmission between the automobile failure alarm unit of GPRS technology, comprise CAN driver and communication protocol packet.
Described real-time demonstration vehicle body status method, the vehicle body real-time information that transmission comes according to the data-transformation facility program shows the real-time vehicle body state of engine speed, speed, total kilometrage, temperature, and shows fault content, vehicle condition state according to automobile failure alarm and next warning message and the automotive performance data of automotive performance evaluation function program transmission.
Described automobile failure alarm method carries out this locality demonstration, audible alarm according to the diagnostic result of vehicle condition diagnostic routine.
As shown in Figure 8, described fault and vehicle condition database include: preservation and the management of fault sample data, characteristic parameter historical data and vehicle condition data, and fault diagnosis model parameter, assessment models parameter, Fault Diagnosis Database (comprise three tables: the fault tree table, rule list, the conclusion table, these three tables are according to servicing manual, set up fault tree, again according to the fault tree summary finishing out, the form with database exists).Wherein fault diagnosis model parameter, assessment models parameter are determined by the experiment of automobile associated stand.
Described vehicle condition diagnostic method is the function that allows to add fault diagnosis algorithm that this device provides, and is made of interface drive program and diagnosis algorithm program.Interface drive program is realized renewal, the loading of condition diagnosing algorithm.Diagnosis algorithm is made of multi-model diagnosis algorithm storehouses such as Fault Trees, adopts Fault Tree to carry out explicit fault diagnosis according to the collection of vehicle condition information data and the vehicle condition status data that collects based on the automobile failure alarm unit of GPRS technology; The vehicle condition diagnostic module is according to after the vehicle condition information completion status fault diagnosis that collects simultaneously, and output alarm information and maintenance are advised.
As shown in Figure 9, described vehicle condition diagnosis comprises the steps: with vehicle condition data management function module operation master routine
1) judges whether vehicle condition has fault, is to enter the 8th step, otherwise enter the 2nd step;
2) judge whether to receive the in real time data of vehicle body state such as the engine speed that transmits from ST10 ECU (Electrical Control Unit) 2, speed, total kilometrage, temperature, be to enter the 3rd step, otherwise return the 1st step;
3) show real-time vehicle body state;
4) preserve the vehicle condition data, be about to the vehicle condition data and be saved in the database;
5) judge whether to carry out the automotive performance assessment, be to enter the 6th step, otherwise enter the 7th step;
6) enter automotive performance assessment subroutine;
7) judging whether to withdraw from, is to finish, and begins otherwise return the 1st step;
8) enter the automobile failure diagnosis subroutine;
9) enter the 7th step after preserving in the fault sample data to data storehouse.
Described automotive performance evaluation function program is under unfaulty conditions, from the raw data of vehicle condition information, extracted cylinder voltage crest value, the rotating speed amplitude that on average fluctuates, acceleration time, deceleration time, fuel supply advance angle, fuel consumption, the characteristic quantities such as torque T tq are inputted as neural network, with engine capacity, oil consumption rate is exported as neural network, neural network adopts 3-tier architecture, 7 nodes of input layer, 15 nodes in middle layer, 1 node of output layer, carry out neural metwork training according to automobile platform experiment sample data, set up respectively 2 BP neural networks and carry out Performance Evaluation, and provide the Motor Maintenance maintenance suggestion according to expertise to the user.As shown in figure 10, described automotive performance assessment subroutine comprises following flow process:
1) calls the assessment models parameter;
2) calculate present engine power according to neural network model;
3) calculate current oil consumption rate according to neural network model;
4) from database, call historical vehicle condition data;
5) calculation engine power variation tendency is specifically take hundred kilometers ranges of driving as unit, according to neural network model calculation engine power variation tendency;
6) calculate the oil consumption rate variation tendency, specifically take hundred kilometers ranges of driving as unit, according to neural network model calculation engine oil consumption rate variation tendency;
7) output maintenance suggestion;
8) return master routine.
As shown in figure 11, described automobile failure diagnosis subroutine comprises following flow process:
1) system's (engine, chassis system or appliance circuit) of selecting fault to occur;
2) select phenomenon of the failure;
3) whether the failure judgement reason is definite, is to enter next step, otherwise carries out the reasoning analysis, then returns previous step;
4) fix a breakdown;
5) the maintenance suggestion is proposed;
6) return master routine.
As shown in figure 12, described reasoning analysis is to finish by following flow process:
1) determines pattern under the fault according to current fault diagnosis sign, and find the corresponding node of current failure symptom;
2) judge whether corresponding node is father node, be to enter next step after finding child node to add the ingress group, otherwise directly enter next step;
3) take out regular NO from node ID, add the rule group; (NO refers to the numbering of specific rules)
4) find regular former piece and consequent in the rule list in Fault Diagnosis Database;
5) the judgement state is normal, normally enters for the 11st step, otherwise enters next step;
6) rule condition is failure cause, adds the failure cause array;
7) find the maintenance of fault to advise in the conclusion table in Fault Diagnosis Database;
Whether be empty, for sky enters next step, otherwise returned for the 6th step if 8) continuing failure judgement reason array;
9) whether decision node is empty, is into down going on foot, going on foot otherwise return the 3rd;
10) show the fault conclusion, and finish;
11) whether the judgment rule group is empty, is to enter next step, otherwise returns for the 4th step;
12) whether the decision node group is empty, is to enter next step, otherwise returns for the 3rd step;
13) diagnose without conclusion, and finish.
The principle of the control system of the vehicle-mounted master controller for inter-vehicle information system of the present invention is: adopt 16 8-digit microcontrollers and expanded function circuit to realize the collection of vehicle condition information data and based on the automobile failure alarm of GPRS technology in the collection of vehicle condition information data and automobile failure alarm unit based on the GPRS technology, give vehicle-mounted master controller by the CAN bus interface with above-mentioned communication, and carry out remote speech/SMS alarm according to the order of vehicle-mounted master controller by the GPRS failure alarm circuit.Main integrated ARM S3C2440A and chip external memory, GPS circuit, bluetooth handsfree circuit, SD card, USB interface, reset circuit, CAN interface circuit, the voicefrequency circuits etc. such as expansion SDRAM, FLASH in vehicle-mounted master controller realize that the multimedia recreation function such as GPS navigation, movie, browsing pictures, music playing, vehicle Bluetooth hand-free system and condition information data management function module comprise data transmission, show vehicle body status function program, automobile failure alarm and automotive performance evaluation function in real time.In video processing unit, realize according to showing that the selection switching command can show the demonstration forms information of vehicle-mounted master controller, also can show the car rear video information under the reversing state.
Claims (3)
1. control system that is used for the vehicle-mounted master controller of inter-vehicle information system, it is the vehicle-mounted master controller (1) that is used in the inter-vehicle information system with ST10 ECU (Electrical Control Unit) (2) and GPRS alarm unit (3), described vehicle-mounted master controller (1) includes: main control unit (4) and be arranged at the peripheral CAN interface circuit (5) of main control unit (4), voicefrequency circuit (6), GPS circuit (7), bluetooth handsfree circuit (8), LCD Interface (9), usb circuit (10), SD card interface (11), jtag interface (12) and reset circuit (13), described CAN interface circuit (5) includes: the CAN controller (19) that is connected and communicates with the SPI interface of control chip (18), the photoelectrical coupler that receives and send (20) that is connected with CAN controller (19), the CAN transceiver (21) that links to each other with photoelectrical coupler (20) and the CAN bus (22) that links to each other with CAN transceiver (21), it is characterized in that, include the vehicle condition information data and gather control module, automobile failure alarm control module based on the GPRS technology, the Video processing control module, vehicle-mounted Main Control Unit, described vehicle condition information data gathers control module, finish the collection of vehicle condition information data, transmit, automobile failure alarm control module based on the GPRS technology, carry out remote alarms according to the remote alarms information that vehicle-mounted Main Control Unit sends, described vehicle-mounted Main Control Unit includes: contain GPS navigation, movie, browsing pictures, music playing, the multimedia recreation functional module of vehicle Bluetooth hand-free system, and vehicle condition diagnosis and vehicle condition data management function module, described vehicle condition diagnosis includes with vehicle condition data management function module: data transmission method, show in real time the vehicle body status method, fault and vehicle condition database, the vehicle condition diagnostic method, automobile failure alarm method and automotive performance appraisal procedure;
Described vehicle condition diagnosis comprises the steps: with vehicle condition data management function module operation master routine
1) judges whether vehicle condition has fault, is to enter the 8th step, otherwise enter the 2nd step;
2) judging whether to receive data, is to enter the 3rd step, otherwise returns the 1st step;
3) show real-time vehicle body state;
4) preserve the vehicle condition data;
5) judge whether to carry out the automotive performance assessment, be to enter the 6th step, otherwise enter the 7th step;
6) enter automotive performance assessment subroutine;
7) judging whether to withdraw from, is to finish, and begins otherwise return the 1st step;
8) enter the automobile failure diagnosis subroutine;
9) enter the 7th step after the preservation fault sample data;
Wherein, described automobile failure diagnosis subroutine comprises following flow process:
A) system of selecting fault to occur;
B) select phenomenon of the failure;
C) whether the failure judgement reason is definite, is to enter next step, otherwise carries out the reasoning analysis, then returns previous step;
D) fix a breakdown;
E) the maintenance suggestion is proposed;
F) return master routine;
Wherein, described reasoning analysis is to finish by following flow process:
(1) determines the affiliated pattern of fault, and find the corresponding node of current failure symptom;
(2) judge whether corresponding node is father node, be to enter next step after finding child node to add the ingress group, otherwise directly enter next step;
(3) take out regular NO from node ID, add the rule group, wherein, NO refers to the numbering of specific rules;
(4) find regular former piece and consequent in the rule list in Fault Diagnosis Database;
(5) the judgement state is normal, normally enters for (11) step, otherwise enters next step;
(6) rule condition is failure cause, adds the failure cause array;
(7) find the maintenance of fault to advise in the conclusion table in Fault Diagnosis Database;
Whether be empty, for sky enters next step, otherwise returned for the 6th step if (8) continuing failure judgement reason array;
(9) whether decision node is empty, is into down going on foot, going on foot otherwise return (3);
(10) show the fault conclusion, and finish;
(11) whether the judgment rule group is empty, is to enter next step, otherwise returns for (4) step;
(12) whether the decision node group is empty, is to enter next step, otherwise returns for (3) step;
(13) diagnose without conclusion, and finish.
2. the control system of the vehicle-mounted master controller for inter-vehicle information system according to claim 1, it is characterized in that, described fault and vehicle condition database have: preservation and the management of fault sample data, characteristic parameter historical data and vehicle condition data, and fault diagnosis model parameter, assessment models parameter, Fault Diagnosis Database.
3. the control system of the vehicle-mounted master controller for inter-vehicle information system according to claim 1 is characterized in that, described automotive performance assessment subroutine comprises following flow process:
1) calls the assessment models parameter;
2) calculate present engine power;
3) calculate current oil consumption rate;
4) call historical vehicle condition data;
5) calculation engine power variation tendency;
6) calculate the oil consumption rate variation tendency;
7) output maintenance suggestion;
8) return master routine.
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| CN103581223B (en) * | 2012-07-24 | 2017-12-26 | 中国电信股份有限公司 | Processing system, method and the vehicular communication unit of vehicle-mounted business information |
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| CN103434417B (en) * | 2013-08-08 | 2015-11-18 | 广西电网公司电力科学研究院 | The vehicle-mounted intelligent end device of a kind of electronlmobil |
| CN104506207A (en) * | 2014-11-27 | 2015-04-08 | 华晨汽车集团控股有限公司 | Vehicle-mounted network communication device |
| CN105511453A (en) * | 2016-01-20 | 2016-04-20 | 无锡威孚力达催化净化器有限责任公司 | Service aid for SCR (Selective Catalytic Reduction) post-processing system |
| CN106444478A (en) * | 2016-08-29 | 2017-02-22 | 上海航盛实业有限公司 | Vehicular mainboard structure |
| CN107071323A (en) * | 2017-01-10 | 2017-08-18 | 美高卡兰光电科技（北京）有限公司 | Equipment choosing method, interface box and in-vehicle display system |
| CN106647715A (en) * | 2017-01-16 | 2017-05-10 | 南京奥联新能源有限公司 | Apparatus and method for implementing CAN (controller area network) channel extension of master controller based on SPI (serial peripheral interface) |
| CN109738874A (en) * | 2019-01-14 | 2019-05-10 | 辽宁工业大学 | A kind of trailer-mounted radar test device and its control method |
| CN110012061B (en) * | 2019-02-20 | 2022-02-08 | 杭州天铭科技股份有限公司 | Management device for vehicle equipment, vehicle, and server |
| CN111190062B (en) * | 2019-12-30 | 2022-02-11 | 清华大学深圳国际研究生院 | Vehicle electric control system safety analysis method and device based on neural network |
| CN111582732A (en) * | 2020-05-12 | 2020-08-25 | 胡伊婷 | Vehicle condition analysis system based on big data |
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| CN101101576A (en) * | 2006-07-06 | 2008-01-09 | 李涛 | Vehicle mounted multifunctional information processor |
| CN101118694A (en) * | 2007-05-18 | 2008-02-06 | 李克明 | Vehicle intellectualized management system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101101576A (en) * | 2006-07-06 | 2008-01-09 | 李涛 | Vehicle mounted multifunctional information processor |
| CN101118694A (en) * | 2007-05-18 | 2008-02-06 | 李克明 | Vehicle intellectualized management system |
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