Automotive trouble diagnosing system

• US 4,989,146 A
• Filed: 10/20/1985
• Issued: 01/29/1991
• Est. Priority Date: 10/08/1984
• Status: Expired due to Fees

• Current Assignee: Nissan Motor Company Limited No 2 Takara-Cho Kanagawa-Ku Yokohama City Japan
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Imajo, Minori
• Primary Examiner(s): Gruber, Felix D.
• Assistant Examiner(s): Mattson, Brian M.
• Application Number:
  US06/783,235
• Time in Patent Office: 1,927 Days
• Field of Search: 364/550, 364/424.04, 364/424.1, 364/431.01, 364/551.01, 340/52 R, 340/52 F, 340/52 D, 340/531, 340/635
• US Class Current: 701/35
• CPC Class Codes: G01R 31/007 using microprocessors or computers
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: G07C 5/0808 Diagnosing performance data testing of vehicles G01M17/00; testing of electrical installation on vehicles G01R31/005
• CPC Class Codes: G07C 5/0858 wherein the data carrier is removable

Abstract

An automotive vehicle is equipped with an on-board microcomputer having a function of pre-diagnosing and indicating a possibility of arising of an automotive trouble in response to electrical informations relatable to the trouble which informations are stored in a memory device. Additionally, an acoustical coupler is mounted on the vehicle and electrically connected to the memory device to convert the electrical informations to acoustic signals. The thus converted acoustical signals are to be transmitted via a telephone line to a computer for automotive trouble diagnosis purpose which computer is located remote from the vehicle, for example, in the head office of a service firm, thereby making it possible to achieve automotive trouble diagnosis without carrying the memory device to a service factory.

Claims

1. In an automotive vehicle, the improvement comprising:

computing means onboard the vehicle, said computing means powered by an automotive battery of the vehicle, memory means connected to the computing means for storing data from sensing means in the vehicle;

detachable unit means, including said memory means, coupling means for coupling said memory means to a remote computing means operable for remotely determining service and parts required for correction of a diagnosed problem of the vehicle, and auxiliary battery means for powering said memory means and said coupling means;

said detachable unit means including a plurality of contact points for connection to said computing means onboard the vehicle, including a contact point for charging said auxiliary battery from the automotive battery of the vehicle;

first means for producing electric signals relatable to the diagnosed problem of the automotive vehicle;

said memory means being further operable for memorizing said electrical signals;

second means for pre-diagnosing and indicating a possibility of occurrence of said problem in response to said electric signals memorized in said memory means; and

said coupling means including an acoustical coupler electrically connected to said memory means to convert said electric signals to acoustic signals, said acoustic signals transmitted via a telephone line to a computer in said remote computing means and located remote from said automotive vehicle, said computer being arranged to diagnose the problem of said automotive vehicle in response to said acoustic signals.

2. An automotive trouble diagnosing system comprising:

means mounted to an automotive vehicle for producing electric signals relatable to a trouble of the automotive vehicle;

memory means mounted to the automotive vehicle for memorizing said electric signals;

means mounted to said automotive vehicle for pre-diagnosing and indicating a possibility of occurrence of the trouble in response to said electric signals memorized in said memory means;

a first acoustical coupler mounted to said automotive vehicle and electrically connected to said memory means to convert said electrical signals to acoustic signals;

a telephone line;

a second acoustical coupler acoustically connectable with said first acoustical coupler via said telephone line to convert said acoustic signals to electric signals; and

a computer located remote from said automotive vehicle and electrically connected to said second acoustical coupler, said computer being arranged to diagnose the trouble of said automotive vehicle,

wherein said pre-diagnosing and indicating means forms part of a microcomputer mounted in said automotive vehicle, and

wherein said memory means and said first acoustical coupler constitute a single unit detachable from said microcomputer so that said memory means is capable of being electrically disconnected from said pre-diagnosing and indicating means, said detachable single unit including an auxiliary battery independent from a battery for operation of said automotive vehicle.

3. An automotive trouble diagnosing system as claimed in claim 2, wherein said telephone line includes a telephone transmitter and receiver acoustically connectable with said first acoustical coupler.

4. An automotive trouble diagnosing system as claimed in claim 3, wherein said telephone transmitter and receiver is mounted in said automotive vehicle.

5. An automotive trouble diagnosing system as claimed in claim 3, wherein said telephone transmitter and receiver is located remote from said automotive vehicle, in which said first acoustical coupler of said detachable single unit is acoustically connectable with said telephone transmitter and receiver.

6. In an automotive vehicle diagnostic system, the improvement comprising:

first means, at a service headquarters, for remotely determining service and parts required for correction of a diagnosed problem of the vehicle;

second means responsive to said first means for determining availability of said required parts;

third means responsive to said second means for remotely communicating with the vehicle to identify a location of said required parts; and

fourth means in the vehicle for receiving communication from said first means and for outputting to a vehicle driver information identifying service needed for the vehicle and location for obtaining said needed service.

7. An improved automotive vehicle diagnostic system as recited in claim 6, further comprising:

fifth means in the vehicle for diagnosing a plurality of signals generated by a plurality of sensors and actuators to determine a source of a problem; and

sixth means responsive to said fifth means for communicating the diagnosed problem source to said remotely located first means.

8. An improved automotive vehicle diagnostic system as recited in claim 7 wherein said sixth means includes telephone communicating means in said vehicle and modem means connected to a storage means in said vehicle, said sixth means operable for transmitting said diagnosed problem source to said first means from said vehicle.

9. An improved automotive vehicle diagnostic system as recited in claim 7, wherein said sixth means includes modem means connected to a storage means in said vehicle, said sixth means further including auxiliary power source means and seventh means for selectively detaching and connecting said sixth means to said vehicle, said modem means operable when detached from said vehicle and powered by said auxiliary power source means for detachably transmitting said diagnosed problem source from said sixth means to said first means via a telephone instrument.

10. In an automotive vehicle diagnostic system including computing means onboard the vehicle, said computing means powered by an automotive battery of the vehicle, memory means connected to the computing means for storing data from sensing means in the vehicle, the improvement comprising:

detachable unit means, including said memory means, coupling means for coupling said memory means to a remote computing means operable for remotely determining service and parts required for correction of a diagnosed problem of the vehicle, and auxiliary battery means for powering said memory means and said coupling means,

said detachable unit means including a plurality of contact points for connection to said computing means onboard the vehicle, including a contact point for charging said auxiliary battery from the automotive battery of the vehicle.

11. An automotive vehicle diagnosing system as recited in claim 10 further comprising:

first means mounted to the automotive vehicle for producing electric signals relatable to the diagnosed problem of the automotive vehicle;

said memory means being further operable for memorizing said electric signals;

second means mounted to the automotive vehicle for pre-diagnosing and indicating a possibility of occurrence of said problem in response to said electric signals memorized in said memory means;

said coupling means including a first acoustical coupler mounted to said automotive vehicle and electrically connected to said memory means to convert said electrical signals to acoustic signals;

a telephone line;

a second acoustical coupler acoustically connectable with said first acoustical coupler via said telephone line to convert said acoustic signals to electric signals; and

said remote computing means including a computer located remote from said automotive vehicle and electrically connected to said second acoustical coupler, said computer being arranged to diagnose the problem of said automotive vehicle.

12. An automotive trouble diagnosing system as claimed in claim 11, wherein said first means includes a plurality of sensors for sensing automotive vehicle parameters relatable to said trouble, and a plurality of actuators operable in connection with operation of an engine of said automotive vehicle.

13. An automotive trouble diagnosing system as claimed in claim 11, wherein said second means forms part of a microcomputer in said computing means onboard the automotive vehicle.

14. An improved automotive vehicle diagnostic system as recited in claim 10, wherein the remote computing means includes means for remotely determining availability of said required parts remotely from the vehicle and further means for communicating with the vehicle to identify thereto a location of said required parts.

15. An improved automotive vehicle diagnostic system as recited in claim 14 wherein said further means is operable in response to the service and parts determined by the remote computing means for computing parts and service costs and for communicating the computed costs to the vehicle.

16. An improved automotive vehicle diagnostic system as recited in claim 14 wherein said coupling means and said further means each comprise modem means for providing communication between said detachable unit means and the remote computing means via a telephone network.