CN1787028A - Car fault auto-detecting system and method - Google Patents
Car fault auto-detecting system and method Download PDFInfo
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Abstract
The invention provides an automobile failure automatic-detecting system, for obtaining state signals of vehicle signal collecting units of all detected systems in an automobile, and making remote analysis of automobile failure to in time inform the driver of the automobile, and comprising: vehicle central control unit, vehicle display unit, vehicle wireless data communication unit, and wireless data communication unit and failure analyzing unit arranged in a remote service center. Besides, the invention provides an automobile failure automatic-detecting method, comprising the steps of: detecting automobile state information, transmitting automobile state information, analyzing automobile failure, transmitting automobile failure information, and displaying automobile failure information. Relative to the existing techniques, the invention can in time, visually and completely reflect the automobile failure information, improving the automobile safety performance and having a simple and reasonable structure as well as being easy to implement.
Description
Technical field
The present invention relates to a kind of automotive safety detection system, particularly a kind of car fault auto-detecting system.
The present invention also relates to the method that a kind of automotive safety detects, particularly a kind of vehicle failure automatic testing method simultaneously.
Technical background
In recent years, the fast development of automotive electronic technology has greatly improved every performance of automobile.Automobile develops into senior electromechanical integrated product by simple engineering goods.Some critical systems of automotive interior have all been realized electronization control, and (Electric Control Unit is ECU) as its control center to adopt ECU (Electrical Control Unit).In fact, in these ECU by analysis, handle and stored failure message.Controlling computer ECU as the control fuel injection motor car engine is provided with fault self-diagnosis system.When automobile normally moved, the input of ECU (Electrical Control Unit) ECU, the magnitude of voltage of output signal all had certain variation range.When a certain voltage of signals value has exceeded this scope, and this phenomenon can not disappear in a period of time, and ECU just is judged as this part and breaks down.ECU deposits this fault in internal random storer (RAM) with the form of code, lights malfunction indicator lamp (as CHECKENGINE, SRS, pilot lamp such as ABS) simultaneously.By this system, the driver can know that fault has appearred in automobile, and still, concrete fault then must could be determined by maintenance personal's concrete maintenance in Automobile Service Factory.In addition, it is the ECU that the tape jam self check is not set that system in some automobiles is also arranged, and its failure condition can only just can be known when specifically overhauling especially.And because the driver can not recognize the existence of fault timely, and fault made correct processing and eliminating, and usually cause the generation of traffic hazard, badly influence the safety of life and property.Therefore, how can at any time vehicle failure be carried out in real time, diagnose fast, then be problem demanding prompt solution in the prior art.
Summary of the invention
The objective of the invention is: at the deficiencies in the prior art, providing a kind of can carry out quick diagnosis to vehicle failure at any time, in time reflects the car fault auto-detecting system of failure message.The present invention provides a kind of vehicle failure automatic testing method simultaneously.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of car fault auto-detecting system, comprise the vehicle-mounted central control unit, vehicle-mounted display unit, the onboard wireless data communication units that are arranged in the automobile, and the wireless data communications unit, the fault analysis unit that are arranged at remote service center; Wherein,
Described vehicle-mounted central control unit is used for the status information of each the detected system in the automobile of gathering automatically by the cab signal collecting unit that is arranged at each detected system in the automobile, thereby generating the status information code also sends by described onboard wireless data communication units, in addition, also receive automobile fault information code, with at vehicle-mounted display unit display automobile failure message from described fault analysis unit;
Described fault analysis unit is used for receiving the status information code that sends from the onboard wireless data communication units in the automobile by described wireless data communications unit, and analysis obtains the automobile fault information code, thereby, return the automobile fault information code to described vehicle-mounted central control unit by described wireless data communications unit.
Preferably, described cab signal collecting unit can comprise and be arranged at each detected intrasystem state detection sensor that the status information from described state detection sensor that described vehicle-mounted central control unit receives is a status signal.
Preferably, described cab signal collecting unit can comprise and be arranged at each detected intrasystem ECU (Electrical Control Unit) that the status information from described ECU (Electrical Control Unit) that described vehicle-mounted central control unit receives is a failure code.
Preferably, described fault analysis can be provided with database in the unit, and described database is used to store the automobile fault information data, the vehicle condition information that described fault analysis element analysis is received, and carry out data with database and compare, to produce the automobile fault information code.
Preferably, described wireless data communications unit and vehicle-mounted data communication unit all can adopt the GPRS module.
The method that a kind of vehicle failure detects automatically comprises the steps:
Vehicle condition information detects step, promptly each detected system in the automobile is carried out state-detection, thereby obtains status information;
Vehicle condition information transmission step, the vehicle condition information that is about to be obtained is encoded according to predefined agreement, produces the status information code, and be wirelessly transmitted to long-range service centre in automobile;
The vehicle failure analytical procedure, promptly at remote service center, wireless receiving is analyzed the automobile current state behind the status information code from automobile, and produces the automobile fault information code when automobile breaks down;
The automobile fault information transmitting step, the automobile fault information that is about to be obtained sends in the corresponding automobile with Wireless transmission mode;
The automobile fault information step display promptly after corresponding automobile receives the automobile fault information code, shows the automobile fault information from remote service center in automobile.
Further, described vehicle condition information detects in the step, can be to detect the status information that obtains automobile by being arranged in the automobile ECU (Electrical Control Unit) in each detected system or state detection sensor.
Further, in the described vehicle failure analytical procedure, the method of analyzing the automobile current state is specifically as follows: the database that is provided for storing the automobile fault information data at remote service center, after remote service center receives status information code from automobile, with wherein the status information and the data in the database of automobile compare, thereby judge whether automobile exists fault, and when having fault, the automobile fault information data of correspondence in the sense data storehouse, in order to produce the automobile fault information code, or at vehicle condition just often, produce the automobile fault information code with normal information.
Further, can comprise vehicle condition information and automobile identification code in the described vehicle condition message code, comprise automobile identification code and automobile fault information data/normal information in the described automobile fault information code, described automobile identification code is and automobile identity of automobile sign one to one.
Preferably, described automobile identification code can comprise license plate code and automobile model code.
In technique scheme, the present invention has been owing to realized that vehicle-mounted central control unit detects, collects vehicle condition information automatically, and sends to remote service center analysis, thereby can obtain the failure message of automobile fast and accurately.And this failure message can be informed the driver in time by Vehicular display device, makes it can grasp condition of the vehicle in real time, thereby has avoided the existence of potential safety hazard effectively.And, because fault analysis is handled by remote service center, so just can reduce the data processing amount of onboard system on the one hand, simplify the structure of onboard system, also can utilize the powerful data processing function of remote service center in addition, automobile is carried out comprehensive and deep state-detection, obtain failure message accurately.Further, because the present invention can gather from the failure code of ECU (Electrical Control Unit) with from the status signal of state detection sensor, then can realize complete detection to vehicle condition.Relative prior art, the present invention can in time, intuitively, comprehensively reflect automobile fault information, improves vehicle safety performance, and simple and reasonable, method is easy to implement.
Description of drawings
Fig. 1 is the system architecture diagram of car fault auto-detecting system of the present invention;
Fig. 2 is the process flow diagram of vehicle failure automatic testing method of the present invention.
Embodiment
Below in conjunction with Figure of description and specific embodiment the present invention is described in further detail.
With reference to figure 1, a kind of car fault auto-detecting system that present embodiment provides is divided into vehicle-mounted part 1 and remote service center 2.
Wherein vehicle-mounted part 1 is installed in each vehicle, and the vehicle-mounted part 1 that remote service center 2 is used for being equipped with all present embodiment communicates by cordless communication network.
Described vehicle-mounted part 1 comprises vehicle-mounted central control unit 12, vehicle-mounted display unit 11, onboard wireless data communication units 13.
Described remote service center 2 comprises wireless data communications unit 20 and fault analysis unit 21.
Described vehicle-mounted central control unit 12 is used for the status information of each the detected system in the automobile of gathering automatically by the cab signal collecting unit that is arranged at each detected system in the automobile, thereby generating the status information code also sends by described onboard wireless data communication units 13, in addition, also receive automobile fault information code from described fault analysis unit 21, with at vehicle-mounted display unit 11 display automobile failure messages, under prior art, this display unit can adopt LCD to show.
Wherein, described vehicle-mounted central control unit 12 provides the automobile embedded platform, specifically can adopt integrated components such as single-chip microcomputer, FPGA to realize.
Described cab signal collecting unit can be for being arranged at each detected intrasystem state detection sensor 10.Described state detection sensor 10 can be used for detecting automobile engine oil pressure, water temperature, amount of fuel, generated energy, closing of the door and whether waits performance state.Described vehicle-mounted central control unit 12 can receive data by the RS232 data bus, also can directly have the data-in port (present embodiment adopts this scheme) corresponding to each state detection sensor 10, the status information from described state detection sensor 10 of its reception is a status signal.
Described cab signal collecting unit also can be for being arranged at each detected intrasystem ECU (Electrical Control Unit) (ECU) 14.Described ECU14 can be for (Traction Control System is called for short TCS as anti-lock braking system (Anti-Lock BrakingSystem is called for short ABS), traction control system, also claim ASR), four-wheel steering system (4WS), Study on Vehicle Dynamic Control system (Vehicle DynamicControl is called for short VDC, also claims VSC, ESP), tire inflation pressure determining system intrasystem ECU such as (Tire PressureMonitoring System are called for short TPMS).Described vehicle-mounted central control unit 12 can pass through CAN (Controller Area Network, controller local area network) bus or LIN (Local Interconnect Network, local serial communication network) bus communication with it, the status information from described ECU (Electrical Control Unit) of its reception is a failure code.
Described cab signal collecting unit can also comprise described state detection sensor 10 and ECU (Electrical Control Unit) 14 simultaneously.Present embodiment promptly adopts this scheme.
In the described remote service center 2, described fault analysis unit 21 is used for receiving the status information code that sends from the onboard wireless data communication units in the automobile 13 by described wireless data communications unit 20, and analysis obtains the automobile fault information code, thereby, return the automobile fault information code to described vehicle-mounted central control unit 12 by described wireless data communications unit 20.
Be provided with database 210 in the described fault analysis unit 21, described database 210 is used to store the automobile fault information data, the vehicle condition information that is received is analyzed in described fault analysis unit 21, and carries out data relatively with database 210, to produce the automobile fault information code.
Described cordless communication network can adopt the quite ripe cordless communication network of GPRS network or other present technology.As a kind of embodiment, described wireless data communications unit 20 and vehicle-mounted data communication unit 13 all can adopt the GPRS module.
To introduce the automatic method that detects of vehicle failure that present embodiment adopts below.
The method that described vehicle failure detects automatically mainly comprises the steps:
Vehicle condition information detects step 3, promptly each detected system in the automobile is carried out state-detection, thereby obtains status information;
Wherein, present embodiment mainly is to detect the status information that obtains automobiles by being arranged at ECU (Electrical Control Unit) 14 in each detected system in the automobile or state detection sensor 10.Described status information comprises failure code and status signal.Described vehicle-mounted central control unit 12 can adopt active mode or passive mode to obtain these status informations.Wherein active mode be vehicle-mounted central control unit 12 at regular intervals at interval, the data-in port of its each connection status detecting sensor 10 of poll and with the CAN/LIN bus of each ECU14 communication, read in status information.When passive mode changes for the state of each state detection sensor 10, or the failure code of each ECU14 is when producing, promptly give notice (as look-at-me), make vehicle-mounted central control unit 12 can in time read in status information to vehicle-mounted central control unit 12.
Vehicle condition information transmission step 4, the vehicle condition information that is about to be obtained is encoded according to predefined agreement, produces the status information code, and be wirelessly transmitted to remote service center in automobile;
Wherein, comprise vehicle condition information and automobile identification code in the described vehicle condition message code, described automobile identification code is and automobile identity of automobile sign one to one, be used at wireless communication procedure, judge the information receive from where, whether the information that perhaps receives belongs to the information of this automobile.The automobile identification code that adopts in the present embodiment comprises license plate code and automobile model code.But also can adopt the code of other unique identification identity of automobile certainly, as comprise ID (identity number) card No. of car owner etc.
Vehicle failure analytical procedure 5, promptly at remote service center, wireless receiving is analyzed the automobile current state behind the status information code from automobile, and produces the automobile fault information code when automobile breaks down;
Wherein, comprise automobile identification code and automobile fault information data/normal information in the described automobile fault information code.
The method of described analysis automobile current state is specially: the database 210 that is provided for storing the automobile fault information data at remote service center 2, after remote service center 2 receives status information code from automobile, with wherein the status information and the data in the database of automobile compare, thereby judge whether automobile exists fault, and when having fault, the automobile fault information data of correspondence in the sense data storehouse, in order to produce the automobile fault information code, or at vehicle condition just often, produce the automobile fault information code with normal information.
Automobile fault information transmitting step 6, the automobile fault information that is about to be obtained sends in the corresponding automobile with Wireless transmission mode;
Automobile fault information step display 7 promptly after corresponding automobile receives the automobile fault information code, shows the automobile fault information from remote service center in automobile;
Wherein, vehicle-mounted central control unit 12 in the automobile is after onboard wireless data communication units 13 receives the automobile fault information code, at first judge the code whether this automobile fault information code should receive for this automobile according to wherein automobile identification code, if not, then will not further handle; If, then this automobile fault information code is further decoded, obtain automobile fault information.When the automobile fault information of decoding acquisition is normal information, will on vehicle-mounted display unit 11, show the normal prompting of operation.Otherwise, will on vehicle-mounted display unit 11, show concrete fault.
In addition, this method also can be worked as the vehicle condition information of vehicle condition information that vehicle-mounted central control unit 12 gathers and last time collection when identical, do not send this status information, and have only when vehicle condition information changes, just send the status information after changing to remote service center 2.
As the further extension of this method, remote service center 2 also can provide corresponding solution to this fault when judging automobile fault is arranged, and sends in the automobile and show, carries out the correct operation of fixing a breakdown with the prompting driver.Providing of this solution, only need increase corresponding data in the database of remote service center gets final product, when providing indicating fault, the solution that accesses simultaneously under the corresponding failure gets final product, to different vehicles, can provide some kinds of different solutions and select according to concrete environmental baseline, wherein, can be included in the interim measure that thoroughly to eliminate under the failure condition for the driver.
Claims (10)
1, a kind of car fault auto-detecting system comprises the vehicle-mounted central control unit, vehicle-mounted display unit, the onboard wireless data communication units that are arranged in the automobile, and the wireless data communications unit, the fault analysis unit that are arranged at remote service center; Wherein,
Described vehicle-mounted central control unit is used for the status information of each the detected system in the automobile of gathering automatically by the cab signal collecting unit that is arranged at each detected system in the automobile, thereby generating the status information code also sends by described onboard wireless data communication units, in addition, also receive automobile fault information code, with at vehicle-mounted display unit display automobile failure message from described fault analysis unit by described onboard wireless data communication units;
Described fault analysis unit is used for receiving the status information code that sends from the onboard wireless data communication units in the automobile by described wireless data communications unit, and analysis obtains the automobile fault information code, thereby, return the automobile fault information code to described vehicle-mounted central control unit by described wireless data communications unit.
2, car fault auto-detecting system according to claim 1, it is characterized in that: described cab signal collecting unit comprises and is arranged at each detected intrasystem state detection sensor that the status information from described state detection sensor that described vehicle-mounted central control unit receives is a status signal.
3, car fault auto-detecting system as claimed in claim 1 or 2, it is characterized in that: described cab signal collecting unit comprises and is arranged at each detected intrasystem ECU (Electrical Control Unit) that the status information from described ECU (Electrical Control Unit) that described vehicle-mounted central control unit receives is a failure code.
4, as car fault auto-detecting system as described in the claim 1,2 or 3, it is characterized in that: described fault analysis is provided with database in the unit, described database is used to store the automobile fault information data, the vehicle condition information that described fault analysis element analysis is received, and carry out data with database and compare, to produce the automobile fault information code.
5, as car fault auto-detecting system as described in the claim 4, it is characterized in that: described wireless data communications unit and vehicle-mounted data communication unit all adopt the GPRS module.
6, the automatic method that detects of a kind of vehicle failure comprises the steps:
Vehicle condition information detects step, promptly each detected system in the automobile is carried out state-detection, thereby obtains status information;
Vehicle condition information transmission step, the vehicle condition information that is about to be obtained is encoded according to predefined agreement, produces the status information code, and be wirelessly transmitted to long-range service centre in automobile;
The vehicle failure analytical procedure, promptly at remote service center, wireless receiving is analyzed the automobile current state behind the status information code from automobile, and produces the automobile fault information code when automobile breaks down;
The automobile fault information transmitting step, the automobile fault information that is about to be obtained sends in the corresponding automobile with Wireless transmission mode;
The automobile fault information step display promptly after corresponding automobile receives the automobile fault information code, shows the automobile fault information from remote service center in automobile.
7, the method that detects automatically as vehicle failure as described in the claim 6, it is characterized in that: described vehicle condition information detects in the step, is to detect the status information that obtains automobile by being arranged at ECU (Electrical Control Unit) in each detected system in the automobile or state detection sensor.
8, automatically the method that detects as vehicle failure as described in the claim 6, it is characterized in that: in the described vehicle failure analytical procedure, the method of analyzing the automobile current state is specially: the database that is provided for storing the automobile fault information data at remote service center, after remote service center receives status information code from automobile, with wherein the status information and the data in the database of automobile compare, thereby judge whether automobile exists fault, and when having fault, the automobile fault information data of correspondence in the sense data storehouse, in order to produce the automobile fault information code, or at vehicle condition just often, produce the automobile fault information code with normal information.
9, the method that detects automatically as vehicle failure as described in the claim 6,7 or 8, it is characterized in that: comprise vehicle condition information and automobile identification code in the described vehicle condition message code, comprise automobile identification code and automobile fault information data/normal information in the described automobile fault information code, described automobile identification code is and automobile identity of automobile sign one to one that described automobile identification code comprises license plate code and automobile model code.
10, the method that detects automatically as vehicle failure as described in the claim 6,7 or 8, it is characterized in that: described remote service center is also when judging automobile fault is arranged, this fault is provided corresponding solution, and send to demonstration in the automobile, carry out the correct operation of fixing a breakdown with the prompting driver.
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