CN100592056C - Vehicle carried fault diagnostic device for electric control automobile and remote fault diagnostic system and method - Google Patents

Vehicle carried fault diagnostic device for electric control automobile and remote fault diagnostic system and method Download PDF

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CN100592056C
CN100592056C CN200510036110A CN200510036110A CN100592056C CN 100592056 C CN100592056 C CN 100592056C CN 200510036110 A CN200510036110 A CN 200510036110A CN 200510036110 A CN200510036110 A CN 200510036110A CN 100592056 C CN100592056 C CN 100592056C
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automobile
fault diagnosis
fault
vehicle
control unit
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CN1900675A (en
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阳红
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Abstract

The fault diagnosis device includes electric control unit for car, fault self-diagnostic port, sensor,executor for car, fault diagnosis computer and control circuit of simulated test. Through fault self-diagnostic port, the said computer and control circuit of containing circuit of receiving and transmitting information are connected to the electric control unit by wire, being controlled by faultdiagnosis computer, control circuit of simulated test transfers standard signal of simulation test, or simulation control program to carry out test of simulation control for sensors, electric controlunit or executor of car. Electric controlled remote diagnosis system includes car borne fault diagnosis device, and remote fault diagnosis center. Using control circuit of simulated test of remote diagnosis system carry out test of simulation control for sensors, electric control unit or executor of car. The invention realizes remote diagnosis in order to ensure and remove fault quickly.

Description

Vehicle carried fault diagnostic device for electric control automobile and remote failure diagnosis system and method
Technical field
The present invention relates to the system and method that a kind of vehicle carried fault diagnostic device for electric control automobile and this device of utilization carry out the electronic automobile remote fault diagnosis
Background technology
Along with the automobile development of auto-control technology, adopt the system of computer control more and more, vehicle structure also becomes and becomes increasingly complex, and the probability that vehicle failure takes place increases, and the difficulty of simultaneous faults diagnosis increases, and is more and more higher to car owner and maintenance personal's requirement.Particularly be in operation when breaking down when automobile, owing to there are not the specialized maintenance personnel to overhaul, the car owner often is difficult to find the fault place under repair.In order to solve the problem of electronic automobile fault diagnosis difficulty, the system and method that a lot of automobile failure diagnosis occurred, as the applying date is that the U.S. Pat 6263268B1 on August 26th, 1998 discloses a kind of system and method that is used for long-range mobile automobile is carried out diagnostic detection, this system and method is set up with the fault diagnosis center by the vehicle-mounted fault diagnosis device and is communicated by letter, send the detection instruction by mind-set vehicle-mounted fault diagnosis device in the fault diagnosis, to detect information feedback after the vehicle-mounted fault diagnosis device detects vehicle failure and carry out analyzing and processing for the fault diagnosis center, vehicle failure will be judged.
But, because the diagnostic trouble code information that present vehicle-mounted fault diagnosis device is provided is more rough, related fault coverage compares broad, be difficult to diagnose out exactly the reason and the parts position of breaking down, the diagnostic trouble code information analysis of the vehicle-mounted fault diagnosis device being provided for the fault diagnosis center is handled and has been brought very big difficulty.
Summary of the invention
One of the technical problem to be solved in the present invention is, a kind of vehicle carried fault diagnostic device for electric control automobile is provided, and by in existing vehicle-mounted fault diagnosis device the simulation test control circuit being set, accurately diagnoses vehicle failure, and accurate failure message is provided.
Two of the technical problem to be solved in the present invention is, a kind of electronic automobile remote failure diagnosis system is provided, provide automobile fault information accurately by above-mentioned vehicle carried fault diagnostic device for electric control automobile, this information is passed to long-range fault diagnosis center carry out analyzing and processing, determine vehicle failure reason and position.
Three of the technical problem to be solved in the present invention is, a kind of electronic automobile remote fault diagnosis method is provided, and adopts above-mentioned electronic automobile remote failure diagnosis system, and automobile is carried out accurate fault diagnosis and carries out analyzing and processing, determines vehicle failure reason and position.
The present invention solves the technical scheme that one of its technical matters adopts: construct a kind of vehicle carried fault diagnostic device for electric control automobile, comprise automobile electronic control unit, vehicle failure autodiagnosis fracture with this unit wired connection, automobile sensor and automobile actuator, also comprise fault diagnosis computer by vehicle failure autodiagnosis fracture and described automobile electronic control unit wired connection, this fault diagnosis computer comprises the message pick-up radiating circuit, it is characterized in that: this vehicle carried fault diagnostic device for electric control automobile also comprises the simulation test control circuit, this circuit is subjected to the control of described fault diagnosis computer, provide the automobile sensor standard analog signal or the automobile actuator simulation control program that send through the fault diagnosis computer, to automobile sensor, automobile electronic control unit or automobile actuator are simulated the control test.
Above-mentioned vehicle carried fault diagnostic device for electric control automobile is characterized in that: described simulation test control circuit independently is provided with, and respectively with described fault diagnosis computer, automobile electronic control unit, automobile sensor and automobile actuator wired connection.
Above-mentioned vehicle carried fault diagnostic device for electric control automobile is characterized in that: described simulation test control circuit be arranged in the described automobile electronic control unit and with other part wired connections of automobile electronic control unit.
Two technical schemes that adopted that the present invention solves its technical matters are: construct a kind of electronic automobile remote failure diagnosis system, comprise vehicle carried fault diagnostic device for electric control automobile and remote fault diagnosis center, this remote fault diagnosis center comprises database, tool storage room and expert diagnostic system, and this remote fault diagnosis center is connected with this vehicle carried fault diagnostic device for electric control automobile radio communication; Described vehicle carried fault diagnostic device for electric control automobile comprises automobile electronic control unit, vehicle failure autodiagnosis fracture with this unit wired connection, automobile sensor and automobile actuator, also comprise fault diagnosis computer by vehicle failure autodiagnosis fracture and described automobile electronic control unit wired connection, this fault diagnosis computer comprises the message pick-up radiating circuit, it is characterized in that: this vehicle carried fault diagnostic device for electric control automobile also comprises the simulation test control circuit, this circuit is subjected to the control of described fault diagnosis computer, provide automobile sensor standard analog signal or the automobile actuator simulation control program that sends through the fault diagnosis computer to automobile electronic control unit or automobile actuator, to automobile sensor, automobile electronic control unit or automobile actuator are simulated the control test.
Three technical schemes that adopted that the present invention solves its technical matters are: a kind of electronic automobile remote fault diagnosis method, adopt following system to carry out the vehicle remote fault diagnosis, described system comprises vehicle carried fault diagnostic device for electric control automobile and remote fault diagnosis center, this remote fault diagnosis center comprises database, tool storage room and expert diagnostic system, and this remote fault diagnosis center is connected with this vehicle carried fault diagnostic device for electric control automobile radio communication; This vehicle carried fault diagnostic device for electric control automobile comprise automobile electronic control unit, with vehicle failure autodiagnosis fracture, automobile sensor and the automobile actuator of this unit wired connection, also comprise the fault diagnosis computer by vehicle failure autodiagnosis fracture and described automobile electronic control unit wired connection, this fault diagnosis computer comprises the message pick-up radiating circuit; This vehicle carried fault diagnostic device for electric control automobile also comprises the simulation test control circuit, this circuit is subjected to the control of described fault diagnosis computer, provide automobile sensor standard analog signal or the automobile actuator simulation control program that sends through the fault diagnosis computer to automobile electronic control unit or automobile actuator, automobile sensor, automobile electronic control unit or automobile actuator are simulated the control test;
Described electronic automobile remote fault diagnosis method comprises the steps:
S1, when the fault diagnosis computer of vehicle carried fault diagnostic device for electric control automobile receives vehicle trouble sign indicating number and data stream, automatically this vehicle failure sign indicating number and data stream are latched;
S2, fault diagnosis computer send to the remote fault diagnosis center with this vehicle failure sign indicating number and data stream;
S3, remote fault diagnosis center utilize its database, tool storage room and expert diagnostic system that vehicle failure sign indicating number and the data stream received are carried out analyzing and processing, and anticipation is carried out in vehicle failure; To fault that causes anticipation and the fault that is easy to get rid of, send repair message and these faults are got rid of to car owner or maintenance personal nearby;
S4, eliminate, finish this automobile failure diagnosis when vehicle failure;
It is characterized in that: when vehicle failure still exists, described method also comprises step:
S5, remote fault diagnosis center send to instruct to vehicle carried fault diagnostic device for electric control automobile according to fault anticipation result and simulate the control test;
S6, remote fault diagnosis center receive the vehicle failure code and the traffic flow information of simulation control test in real time, and all information are carried out multianalysis, accurate judgement is made in vehicle failure, instructed car owner or auto repair personnel nearby correctly to handle, get rid of vehicle failure.
The invention has the beneficial effects as follows:
1. by the simulation test control circuit is set, the control test is simulated in vehicle failure targetedly in vehicle carried fault diagnostic device for electric control automobile, realized accurate judgement the electronic automobile fault according to the anticipation fail result;
2. the long-range fault automobile is simulated controlled test at the fault diagnosis center, realized the long-range accurate judgement of electronic automobile fault.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is an electronic automobile remote failure diagnosis system ingredient synoptic diagram;
Fig. 2 is vehicle carried fault diagnostic device for electric control automobile of the present invention and remote failure diagnosis system embodiment one synoptic diagram;
Fig. 3 is vehicle carried fault diagnostic device for electric control automobile of the present invention and remote failure diagnosis system embodiment two synoptic diagram.
Embodiment
As shown in Figure 1, the electronic automobile remote failure diagnosis system is made up of information extraction part 101, partial message transmission 102 and fault diagnosis and control section 103.
Vehicle carried fault diagnostic device for electric control automobile and automobile remote diagnostic system embodiment one thereof:
Information extraction part 101 is a vehicle carried fault diagnostic device for electric control automobile.As shown in Figure 2, vehicle carried fault diagnostic device for electric control automobile comprises automobile electronic control unit 1, by vehicle failure autodiagnosis fracture 2 fault diagnosis computer 3 and simulation test control circuit 11 with automobile electronic control unit 1 wired connection, simulation test control circuit 11 respectively with automobile sensor 10, automobile actuator 12 and automobile electronic control unit 1 wired connection, fault diagnosis computer 3 comprises message pick-up radiating circuit 4.
Wired connection can be connections such as electrical connection or optical fiber.
At automobile normal running or generic failure diagnostic state, simulation test control circuit 11 only plays signal transmission between automobile sensor 10, ECU (Electrical Control Unit) 1 or the actuator 10.
When carrying out fault diagnosis work, fault diagnosis computer 3 extracts information such as failure code and data stream from the fault diagnosis mouth 2 on the automobile, at any time monitor the ruuning situation of automobile, automobile operating state information endlessly is provided for the fault diagnosis center 7 of fault diagnosis part 103.When in a single day fault diagnosis computer 3 finds automobile failure diagnosis mouth 2 output diagnostic trouble code, can be immediately automatically with the vehicle failure sign indicating number and at that time data stream latch so that fault diagnosis center 7 or on-site maintenance personnel call.
Partial message transmission 102 both can be made up of the information multipath reception/transmitter 6 at message pick-up/radiating circuit 4, data mobile communication (GPRS, CDMA, WCDMA, CDMA2000 or 3G etc.) network 5 and the fault diagnosis center 7 of fault diagnosis computer 3 etc., also can be made up of the webserver at message pick-up/radiating circuit 4, data mobile communication (GPRS, CDMA, WCDMA, CDMA2000 or 3G etc.) network 5, internet Internet 8 and the fault diagnosis center 7 of fault diagnosis computer 3 etc.Extract information such as fault diagnosis computer 3 extracted in the part 101 vehicle failure code and data stream by aforementioned information, and fault diagnosis center 7 detection to the fault automobile of sending, steering order etc. all are to realize by this communication transmission network.In addition, the operating personnel at car owner and fault diagnosis center 7 can also exchange some other failure diagnosis information by mobile phone.
Fault diagnosis part 103 is fault diagnosis center 7, comprise database, tool storage room and expert diagnostic system etc., utilize database, tool storage room and the expert diagnostic system at fault diagnosis center 7, the information such as failure code, data stream and operation conditions that partial message transmission 102 transmits are carried out analyzing and processing, preliminary anticipation is made in vehicle failure, the fault that causes the anticipation fault and be easy to get rid of is sent repair message to car owner or maintenance personal nearby, instruct car owner or auto repair personnel nearby to dispose, the anticipation fault is got rid of.If vehicle failure is eliminated thereupon, finish the fault diagnosis of this automobile so; If vehicle failure is not eliminated yet, fault diagnosis center 7 is just transferred for anticipation fault sensor standard analog signal or actuator simulation control program targetedly, and this sensor standard analog signal or actuator simulation control program is sent to the fault diagnosis computer 3 of vehicle-mounted fault diagnosis device.
Fault diagnosis computer 3 provides the sensor standard analog signal according to sensor standard analog signal control simulation test control circuit 11 for automobile electronic control unit 1, corresponding automobile actuator 12 is simulated the control test, the test result signal is through this simulation test control circuit 11, automobile electronic control unit 1, vehicle failure autodiagnosis fracture 2 or directly be delivered to fault diagnosis computer 3 through this simulation test control circuit 11, and be sent to fault diagnosis center 7 through fault diagnosis computer 3, when test result normal, but fault diagnosis center 7 failure judgement occur in automobile sensor 10, when test result unusual, then fault may occur in ECU (Electrical Control Unit) 1 or automobile actuator 12, must transfer and move actuator simulation control program this moment, transfer actuator simulation control program and send it to fault diagnosis computer 3 by fault diagnosis center 7,11 pairs of corresponding automobile actuators 12 of this actuator simulation control program control simulation test control circuit of fault diagnosis computer 3 operations are simulated the control test, test result is sent to fault diagnosis center 7 through fault diagnosis computer 3, when test result normal, but fault diagnosis center 7 failure judgement occur in ECU (Electrical Control Unit) 1, when test result unusual, but fault diagnosis center 7 failure judgement occur in automobile actuator 12.
Fault diagnosis center 7 can directly transfer and actuator simulated that control program sends to 3 pairs of ECU (Electrical Control Unit) 1 of fault diagnosis computer or automobile actuator 12 is tested according to anticipation fail result (may occur in ECU (Electrical Control Unit) 1 or automobile actuator 12).
After accurate judgement is made in the 7 pairs of vehicle failure in fault diagnosis center, send the information guiding car owner or auto repair personnel nearby correctly handle, get rid of vehicle failure.
Vehicle-mounted fault diagnosis device and automobile remote diagnostic system embodiment two thereof:
Information extraction part 101 is the vehicle-mounted fault diagnosis device.As shown in Figure 3, vehicle carried fault diagnostic device for electric control automobile comprises automobile electronic control unit 1, by vehicle failure autodiagnosis fracture 2 fault diagnosis computer 3 with described automobile electronic control unit 1 wired connection, also comprise the simulation test control circuit 11 that is arranged in the automobile electronic control unit 1, with the automobile sensor 10 and the automobile actuator 12 of automobile electronic control unit 1 wired connection.
Wired connection can be connections such as electrical connection or optical fiber.
At automobile normal running or generic failure diagnostic state, simulation test control circuit 11 only plays signal transmission between automobile sensor 10, ECU (Electrical Control Unit) 1 or the actuator 10.
When carrying out fault diagnosis work, fault diagnosis computer 3 extracts information such as failure code and data stream from the fault diagnosis mouth 2 on the automobile, at any time monitor the ruuning situation of automobile, automobile operating state information endlessly is provided for the fault diagnosis center 7 of fault diagnosis part 103.When in a single day fault diagnosis computer 3 finds automobile failure diagnosis mouth 2 output diagnostic trouble code, can be immediately automatically with the vehicle failure sign indicating number and at that time data stream latch so that fault diagnosis center 7 or on-site maintenance personnel call.
Partial message transmission 102 both can be made up of message pick-up/radiating circuit 4, data mobile communication (GPRS, CDMA, WCDMA, CDMA2000 or 3G etc.) network 5 and the fault diagnosis central information multipath reception/transmitter 6 etc. of fault diagnosis computer 3, also can be made up of the webserver etc. at message pick-up/radiating circuit 4, data mobile communication (GPRS, CDMA, WCDMA, CDMA2000 or 3G etc.) network 5, internet Internet 8 and the fault diagnosis center 7 of diagnosis computer 3.Extract information such as fault diagnosis computer 3 extracted in the part 101 vehicle failure code and data stream by aforementioned information, and fault diagnosis center 7 detection to the fault automobile of sending, steering order etc. all are to realize by this communication transmission network.In addition, the car owner can also exchange some other failure diagnosis information by mobile phone with fault diagnosis center 7 operating personnel.
Fault diagnosis part 103 is fault diagnosis center 7, comprise database, tool storage room and expert diagnostic system etc., utilize database, tool storage room and the expert diagnostic system at fault diagnosis center 7, the information such as failure code, data stream and operation conditions that partial message transmission 102 transmits are carried out analyzing and processing, preliminary anticipation is made in vehicle failure, the fault that causes the anticipation fault and be easy to get rid of is sent repair message to car owner or maintenance personal nearby, instruct car owner or auto repair personnel nearby to dispose, the anticipation fault is got rid of.If vehicle failure is eliminated thereupon, finish the fault diagnosis of this automobile so; If vehicle failure is not eliminated yet, fault diagnosis center 7 is just transferred for anticipation fault sensor standard analog signal or actuator simulation control program targetedly, and this sensor standard analog signal or actuator simulation control program is sent to the fault diagnosis computer 3 of vehicle-mounted fault diagnosis device.
Fault diagnosis computer 3 provides sensor standard analog signal by automobile autodiagnosis fracture 2 control simulation test control circuits 11 for automobile electronic control unit 1 according to the sensor standard analog signal, corresponding automobile actuator 12 is simulated the control test, the test result signal is through this simulation test control circuit 11, other parts of automobile electronic control unit 1 and vehicle failure autodiagnosis fracture 2 are passed to fault diagnosis computer 3, and be sent to fault diagnosis center 7 through fault diagnosis computer 3, when test result normal, but fault diagnosis center 7 failure judgement occur in automobile sensor 10, when test result unusual, then fault may occur in ECU (Electrical Control Unit) 1 or automobile actuator 12, must transfer and move actuator simulation control program this moment, transfer actuator simulation control program and send it to fault diagnosis computer 3 by fault diagnosis center 7, this actuator simulation control program of fault diagnosis computer 3 operations is simulated the control test by 11 pairs of corresponding automobile actuators 12 of automobile autodiagnosis fracture 2 control simulation test control circuits, test result is sent to fault diagnosis center 7 through fault diagnosis computer 3, when test result normal, but fault diagnosis center 7 failure judgement occur in ECU (Electrical Control Unit) 1, when test result unusual, but fault diagnosis center 7 failure judgement occur in automobile actuator 12.
Fault diagnosis center 7 can directly transfer and actuator simulated that control program sends to 3 pairs of ECU (Electrical Control Unit) 1 of fault diagnosis computer or automobile actuator 12 is tested according to anticipation fail result (may occur in ECU (Electrical Control Unit) 1 or automobile actuator 12).
After accurate judgement is made in the 7 pairs of vehicle failure in fault diagnosis center, send the information guiding car owner or auto repair personnel nearby correctly handle, get rid of vehicle failure.
The method of using this automobile remote diagnostic system to carry out automobile failure diagnosis is as follows:
When the fault diagnosis computer of vehicle-mounted fault diagnosis device receives vehicle trouble sign indicating number and data stream, automatically this vehicle failure sign indicating number and data stream are latched;
The fault diagnosis computer sends to the remote fault diagnosis center with this vehicle failure sign indicating number and data stream;
Remote fault diagnosis center 7 utilizes its database, tool storage room and expert diagnostic system etc. that vehicle failure sign indicating number and the data stream received are carried out analyzing and processing, and anticipation is carried out in vehicle failure; The fault that causes the anticipation fault and be easy to get rid of is sent repair message to car owner or maintenance personal nearby, instruct car owner or auto repair personnel nearby to dispose, the anticipation fault is got rid of;
Eliminate when vehicle failure, finish this automobile failure diagnosis; When vehicle failure still exists, the fault diagnosis center sends to instruct to the vehicle-mounted fault diagnosis device simulates the control test;
Information such as the vehicle failure code of the real-time acceptance test in fault diagnosis center and data stream, and all information are carried out multianalysis, accurate judgement is made in vehicle failure, instruct car owner or auto repair personnel nearby correctly to handle, get rid of vehicle failure.
The present invention has realized:
1. by the simulation test control circuit is set, the control test is simulated in vehicle failure targetedly in vehicle carried fault diagnostic device for electric control automobile, realized accurate judgement the electronic automobile fault according to the anticipation fail result;
2. the long-range fault automobile is simulated controlled test at the fault diagnosis center, realized the long-range accurate judgement of electronic automobile fault.

Claims (10)

1, a kind of vehicle carried fault diagnostic device for electric control automobile, comprise automobile electronic control unit, respectively with the vehicle failure autodiagnosis fracture of this unit wired connection, automobile sensor and automobile actuator, also comprise fault diagnosis computer by vehicle failure autodiagnosis fracture and described automobile electronic control unit wired connection, this fault diagnosis computer comprises the message pick-up radiating circuit, it is characterized in that: this vehicle carried fault diagnostic device for electric control automobile also comprises the simulation test control circuit, this circuit is subjected to the control of described fault diagnosis computer, provide the automobile sensor standard analog signal or the automobile actuator simulation control program that send through the fault diagnosis computer, to automobile sensor, automobile electronic control unit or automobile actuator are simulated the control test.
2, vehicle carried fault diagnostic device for electric control automobile according to claim 1, it is characterized in that: described simulation test control circuit independently is provided with, and respectively with described fault diagnosis computer, automobile electronic control unit, automobile sensor and automobile actuator wired connection.
3, vehicle carried fault diagnostic device for electric control automobile according to claim 1 is characterized in that: described simulation test control circuit be arranged in the described automobile electronic control unit and with other part wired connections of automobile electronic control unit.
4, according to claim 1 or 2 or 3 described vehicle carried fault diagnostic device for electric control automobile, it is characterized in that: described wired connection is for being electrically connected or the optical fiber connection.
5, a kind of electronic automobile remote failure diagnosis system, comprise vehicle carried fault diagnostic device for electric control automobile and remote fault diagnosis center, this remote fault diagnosis center comprises database, tool storage room and expert diagnostic system, and this remote fault diagnosis center is connected with this vehicle carried fault diagnostic device for electric control automobile radio communication; Described vehicle carried fault diagnostic device for electric control automobile comprises automobile electronic control unit, respectively with the vehicle failure autodiagnosis fracture of this unit wired connection, automobile sensor and automobile actuator, also comprise fault diagnosis computer by vehicle failure autodiagnosis fracture and described automobile electronic control unit wired connection, this fault diagnosis computer comprises the message pick-up radiating circuit, it is characterized in that: this vehicle carried fault diagnostic device for electric control automobile also comprises the simulation test control circuit, this circuit is subjected to the control of described fault diagnosis computer, provide automobile sensor standard analog signal or the automobile actuator simulation control program that sends through the fault diagnosis computer to automobile electronic control unit or automobile actuator, to automobile sensor, automobile electronic control unit or automobile actuator are simulated the control test.
6, electronic automobile remote failure diagnosis system according to claim 5, it is characterized in that: described remote fault diagnosis center and Internet connection or comprise information multipath reception transmitter, described simulation test control circuit independently is provided with, and respectively with described fault diagnosis computer, automobile electronic control unit, automobile sensor and automobile actuator wired connection, at automobile normal running or generic failure diagnostic state, this simulation test control circuit only plays signal transmission between automobile sensor, automobile electronic control unit or the automobile actuator; When described fault diagnosis computer receives the Sensor Analog Relay System diagnostic test control signal of sending at the remote fault diagnosis center, described fault diagnosis computer sends the automobile sensor standard analog signal and passes to automobile electronic control unit by it for this simulation test control circuit, the simulation test control circuit also passes to the automobile actuator with the feedback control signal of automobile electronic control unit, the feedback test signal is through this simulation test material controlling circuit, automobile electronic control unit, vehicle failure autodiagnosis fracture or directly be delivered to the fault diagnosis computer through this simulation test control circuit re-sends to the remote fault diagnosis center; Perhaps, when described fault diagnosis computer receives the automobile actuator simulation control program that sends at the remote fault diagnosis center, this fault diagnosis computer moves this automobile actuator simulation control program and controls this simulation test control circuit and produces analog test signal and pass to the automobile actuator and carry out simulation test, the feedback test signal is through this simulation test control circuit, automobile electronic control unit and vehicle failure autodiagnosis fracture or directly be delivered to the fault diagnosis computer through this simulation test control circuit, re-sends to the remote fault diagnosis center.
7, electronic automobile remote failure diagnosis system according to claim 5, it is characterized in that: described remote fault diagnosis center and Internet connection or comprise information multipath reception transmitter, described simulation test control circuit be arranged in the described automobile electronic control unit and with other part wired connections of automobile electronic control unit, when described fault diagnosis computer expert crosses described vehicle failure autodiagnosis fracture and sends Sensor Analog Relay System diagnostic test control signal, described fault diagnosis computer sends the automobile sensor standard analog signal and passes to other parts of automobile electronic control unit by it for this simulation test control circuit, the simulation test control circuit also passes to the automobile actuator with the feedback control signal of other parts of automobile electronic control unit, the feedback test signal is through this simulation test control circuit, other parts of automobile electronic control unit, pass the fault diagnosis computer by the oral instructions of vehicle failure self diagnosis, re-send to the remote fault diagnosis center; Perhaps, when described fault diagnosis computer receives the automobile actuator simulation control program of sending at this remote fault diagnosis center, this fault diagnosis computer moves this automobile actuator simulation control program and controls this simulation test control circuit and produces analog test signal and pass to the automobile actuator and carry out simulation test, the feedback test signal is passed the fault diagnosis computer through other parts and the oral instructions of vehicle failure self diagnosis of this simulation test control circuit, automobile electronic control unit, re-sends to the remote fault diagnosis center.
8, a kind of electronic automobile remote fault diagnosis method, adopt following system to carry out the vehicle remote fault diagnosis, described system comprises vehicle carried fault diagnostic device for electric control automobile and remote fault diagnosis center, this remote fault diagnosis center comprises database, tool storage room and expert diagnostic system, and this remote fault diagnosis center is connected with this vehicle carried fault diagnostic device for electric control automobile radio communication; This vehicle carried fault diagnostic device for electric control automobile comprise automobile electronic control unit, respectively with vehicle failure autodiagnosis fracture, automobile sensor and the automobile actuator of this unit wired connection, also comprise the fault diagnosis computer by vehicle failure autodiagnosis fracture and described automobile electronic control unit wired connection, this fault diagnosis computer comprises the message pick-up radiating circuit; This vehicle carried fault diagnostic device for electric control automobile also comprises the simulation test control circuit, this circuit is subjected to the control of described fault diagnosis computer, provide automobile sensor standard analog signal or the automobile actuator simulation control program that sends through the fault diagnosis computer to automobile electronic control unit or automobile actuator, automobile sensor, automobile electronic control unit or automobile actuator are simulated the control test;
Described electronic automobile remote fault diagnosis method comprises the steps:
S1, when the fault diagnosis computer of vehicle carried fault diagnostic device for electric control automobile receives vehicle trouble sign indicating number and data stream, automatically this vehicle failure sign indicating number and data stream are latched;
S2, fault diagnosis computer send to the remote fault diagnosis center with this vehicle failure sign indicating number and data stream;
S3, remote fault diagnosis center utilize its database, tool storage room and expert diagnostic system that vehicle failure sign indicating number and the data stream received are carried out analyzing and processing, and anticipation is carried out in vehicle failure; To the fault of anticipation and the fault that is easy to get rid of, send repair message and these faults are got rid of to car owner or maintenance personal nearby;
S4, eliminate, finish this automobile failure diagnosis when vehicle failure;
It is characterized in that: when vehicle failure still exists, described method also comprises step:
S5, remote fault diagnosis center send to instruct to vehicle carried fault diagnostic device for electric control automobile according to fault anticipation result and simulate the control test;
S6, remote fault diagnosis center receive the vehicle failure code and the traffic flow information of simulation control test in real time, and all information are carried out multianalysis, accurate judgement is made in vehicle failure, instructed car owner or auto repair personnel nearby correctly to handle, get rid of vehicle failure.
9, electronic automobile remote fault diagnosis method according to claim 8, it is characterized in that: described step S5 medium-long range fault diagnosis center sends to instruct according to fault anticipation result and simulates control test to vehicle carried fault diagnostic device for electric control automobile and be achieved in that and transfer for anticipation fault sensor standard analog signal targetedly, and send it to the fault diagnosis computer of vehicle-mounted fault diagnosis device, provide the sensor standard analog signal by this fault diagnosis computer control simulation test control circuit for automobile electronic control unit, to automobile sensor, automobile electronic control unit or automobile actuator are simulated the control test;
When remote fault diagnosis center during, enter step S6 according to test feedback information failure judgement; When the remote fault diagnosis center according to the test feedback information can't failure judgement the time, transfer for anticipation fault automobile actuator simulation control program targetedly, and send it to the fault diagnosis computer of vehicle-mounted fault diagnosis device, by this fault diagnosis computer control simulation test control circuit automobile sensor, automobile electronic control unit or automobile actuator are simulated the control test.
10, electronic automobile remote fault diagnosis method according to claim 8, it is characterized in that: described step S5 medium-long range fault diagnosis center sends to instruct according to fault anticipation result and simulates control test to vehicle carried fault diagnostic device for electric control automobile and be achieved in that and transfer for anticipation fault automobile actuator simulation control program targetedly, and send it to the fault diagnosis computer of vehicle-mounted fault diagnosis device, by this fault diagnosis computer control simulation test control circuit to automobile sensor, automobile electronic control unit or automobile actuator are simulated the control test.
CN200510036110A 2005-07-19 2005-07-19 Vehicle carried fault diagnostic device for electric control automobile and remote fault diagnostic system and method Expired - Fee Related CN100592056C (en)

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