Data recording apparatus and shut-down method for data recording apparatus

• US 7,706,939 B2
• Filed: 02/25/2005
• Issued: 04/27/2010
• Est. Priority Date: 02/27/2004
• Status: Active Grant

• Current Assignee: Subaru Corp.
• Original Assignee: Fuji Heavy Industries Limited (Subaru Corp.)
• Inventors: Noguchi, Kiyoshige
• Primary Examiner(s): Tran; Khoi
• Assistant Examiner(s): Sriraman; Nikhil
• Application Number:
  US11/065,483
• Publication Number:
  US 20050192723A1
• Time in Patent Office: 1,887 Days
• Field of Search: 701/35, 701/29, 701/112, 701/115, 340/438
• US Class Current: 701/35
• CPC Class Codes: G07C 5/0816 Indicating performance data, e.g. occurrence of a malfunction
• CPC Class Codes: G07C 5/085 using electronic data carriers

Abstract

In a data recording apparatus for recording control parameters in a control unit in a vehicle, it is determined whether or not the control unit has terminated an operation for outputting control parameters to be recorded. Then, when it is determined that the control unit has terminated the operation, shut-down processing is executed at a timing at which the termination of the operation is determined for shutting down a power supply to the data recording apparatus.

Claims

1. A data recording apparatus for recording a control parameter in a control unit in a vehicle, said apparatus comprising:

a determination section configured to output a data request signal to the control unit and configured to determine whether an operation of the control unit has terminated based on whether said control parameter from the control unit is received by said determination section in response to the data request signal, said operation outputting the control parameter to be recorded; and

a control section configured to shut down a power supply to the data recording apparatus, at a timing at which a termination of the operation is determined, when the determination section determines that the control unit terminates the operation.

2. The data recording apparatus according to claim 1, wherein, when the determination section receives data in response to the data request signal, the determination section determines that the control unit continues to operate, and

wherein, when the determination section does not receive data in response to the data request signal, the determination section determines that the control unit terminates the operation.

7. The data recording apparatus according to claim 1, wherein the termination of the operation of the control unit corresponds in timing to a termination of an operation of the data recording apparatus.

8. The data recording apparatus according to claim 1, wherein a central processing unit (CPU) comprises said determination section and said control section.

9. The data recording apparatus according to claim 8, further comprising:

a memory device configured to store data processed by the CPU, said memory device connected to said CPU;

a data recording section configured to record data stored in the memory device, said data recording section connected to said CPU;

an operation section connected to said CPU to cause the CPU to record vehicle data stored in the memory device to the data recording section, said operation section comprising a remote controller provided with an operation switch, said operation switch configured to control said CPU;

a communication section connected to said CPU to notify a user of completion of recording; and

an interface section connected to said CPU to allow a plurality of devices to send and receive data from the CPU.

10. The data recording apparatus according to claim 9, further comprising:

a removable non-volatile memory unit configured to store data recorded by said data recording section; and

a socket configured to provide one of said CPU and said recording access to said removable non-volatile memory unit,

wherein said CPU records data equivalent to said data recorded by said data recoding section on said removable non-volatile memory unit.

11. The data recording apparatus according to claim 9, wherein said data recording section comprises a removable non-volatile memory unit configured to store data, and

wherein said CPU records data on said memory unit.

13. The data recording apparatus according to claim 1, wherein said recording apparatus records operation history data comprising said control parameter in a data recording section.

14. The data recording apparatus according to claim 13, wherein said shutting down of said power supply occurs after said recording apparatus records said operation history data.

15. The data recording apparatus according to claim 2, wherein data is recorded while said control unit is operational.

22. The data according apparatus according to claim 1, wherein the data request signal is outputted to acquire the control parameter which is set as acquisition content included in a mode file previously recorded in a data recording section.

3. A data recording apparatus for recording a control parameter in a control unit in a vehicle, said apparatus comprising:

a determination section configured to output a data request signal to the control unit and configured to determine whether an operation of the control unit has terminated based on whether said control parameter from the control unit is received by the determination section in response to the data request signal, the operation outputting the control parameter to be recorded;

a detection section configured to detect a signal outputted from the vehicle in association with a turning off of an ignition switch; and

a control section having a plurality of switchable shut-down modes comprising a first shut-down mode and a second shut-down mode,

wherein the control section executes a shut-down processing configured to shut down power supply to the data recording apparatus at a timing at which a termination of the operation is determined when the determination section determines that the control unit terminates the operation in the first shut-down mode,

wherein the control section executes the shut-down processing at a timing at which a detection is made when the detection section detects the signal outputted in association with the turning off of the ignition switch in the second shut-down mode, and

wherein the control section switches the first shut-down mode and the second shut-down mode in accordance with acquisition contents indicative of a type of the control parameter to be recorded and an acquisition condition indicative of a condition under which the control parameter can be acquired to effectively identify a faulty condition of the vehicle.

16. The data recording apparatus according to claim 3, wherein a central processing unit (CPU) comprises said determination section and said control section.

17. The data recording apparatus according to claim 16, further comprising:

a memory device configured to store data processed by the CPU, said memory device connected to said CPU;

a data recording section configured to record data stored in the memory device, said data recording section connected to said CPU;

an operation section connected to said CPU to cause the CPU to record vehicle data stored in the memory device to the data recording section, said operation section comprising a remote controller provided with an operation switch, said operation switch configured to control said CPU;

a communication section connected to said CPU to notify a user of completion of recording; and

an interface section connected to said CPU to allow a plurality of devices to send and receive data from the CPU,

wherein said CPU monitors said interface section to detect a signal which is associated with the turning off of said ignition switch.

18. The data recording apparatus according to claim 3, further comprising:

a mode file previously recorded in a data recording section to record data stored in a memory device, said data recording section connected to a CPU;

wherein the first shut-down mode and the second shut-down mode are switched based on an operating condition stored in the mode file, said operating condition determined in accordance with one of said acquisition contents and said acquisition condition.

19. The data recording apparatus according to claim 18, wherein, when an item stating “

timing at which the ignition switch is turned off”

exists in said operating condition of said mode file and the ignition switch is turned off, the shut-down processing is executed without said determination section determining whether said control unit is terminated.

23. The data recording apparatus according to claim 3, wherein the data request signal is outputted to acquire the control parameter which is set as acquisition content included in a mode file previously recorded in a data recording section.

4. A method of shutting down a recording apparatus for recording a control parameter in a control unit in a vehicle, comprising:

outputting a data request signal to the control unit and determining whether an operation of the control unit has terminated based on whether said control parameter from the control unit is received in response to the data request signal, the operation for outputting the control parameter to be recorded; and

executing shut-down processing for shutting down a power supply to the data recording apparatus at a timing at which a termination of the operation is determined when said determining whether the operation of the control unit has terminated occurs.

5. The method according to claim 4, further comprising:

determining that the control unit continues to operate, when data in response to the data request signal is received; and

determining that the control unit terminates the operation, when the data in response to the data request signal is not received.

12. The method of shutting down the recording apparatus according to claim 4, wherein said executing shut-down processing occurs when an engine of said vehicle is stopped, and

wherein said recording apparatus remains shut down until said recording apparatus anticipates a staffing of said engine of said vehicle.

24. The method according to claim 4, further comprising:

outputting the data request signal for acquiring the control parameter which is set as acquisition content included in a mode file previously recorded in a data recording section.

6. A method of shutting down a recording apparatus for recording a control parameter in a control unit in a vehicle, comprising:

switching a plurality of switchable shut-down modes comprising a first shut-down mode and a second shut-down mode, in accordance with acquisition contents indicative of a type of the control parameter to be recorded and an acquisition condition indicative of a condition under which the control parameter can be acquired for effectively identifying a faulty condition of the vehicle; and

executing processing in accordance with the switched shut-down mode, said executing comprising;

outputting a data request signal to the control unit and determining whether an operation of the control unit has terminated based on whether said control parameter from the control unit is received in response to the data request signal, the operation for outputting the control parameter to be recorded;

executing shut-down processing for shutting down a power supply to the data recording apparatus at a timing at which a termination of the operation is determined said determining whether the operation of the control unit has terminated occurs, in the first shut- down mode;

detecting a signal outputted from the vehicle in association with a turning off of an ignition switch; and

executing the shut-down processing at a timing at which the signal is detected when detecting the signal outputted in association with the turning off of the ignition switch, in the second shut-down mode.

20. The method according to claim 6, wherein the first shut- down mode and the second shut-down mode are switched based on an operating condition stored in a mode filed previously recorded in a data recording section to record data stored in a memory device, said data recording section connected to a CPU, and

wherein the operating condition is determined in accordance with one of said acquisition contents or said acquisition condition.

21. The method according to claim 20, wherein, when an item stating “

timing at which the ignition switch is turned off”

exists in the operation condition of the mode file and the ignition switch is turned off, said executing shut-down processing is executed without said determining whether said operation of the control unit has terminated.

25. The method according to claim 6, further comprising:

outputting the data request signal for acquiring the control parameter which is set as acquisition content included in a mode file previously recorded in a data recording section.