ON-BOARD MACHINE, FREQUENCY COLLECTING DEVICE, AND FREQUENCY COLLECTING METHOD

• US 20090254243A1
• Filed: 09/27/2007
• Published: 10/08/2009
• Est. Priority Date: 09/28/2006
• Status: Abandoned Application

• Current Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Original Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Inventors: Uchihashi, Koji, Iwanaga, Takehito
• Application Number:
  US12/440,636
• Publication Number:
  US 20090254243A1
• Time in Patent Office: Days
• US Class Current: 701/33
• CPC Class Codes: G05B 21/02 electric

Abstract

Provided is an on-board machine capable of readily examining whether a self-diagnosing mechanism operates in a normal manner while satisfying statutory requirements. The on-board machine includes an EEPROM for storing a failure diagnosis executing frequency calculated on the basis of a failure diagnosis executed by an electronic control device under a predetermined travel condition set in advance, and a control portion for transmitting the failure diagnosis executing frequency stored in the EEPROM in response to a transmission demand for the executing frequency of the failure diagnosis from an external frequency collecting device 3 when the failure diagnosis executing frequency is within a predetermined frequency range.

Claims

1. A failure-diagnosing on-board machine provided in a vehicle, the on-board machine comprising:

a storing portion for storing information related to a failure diagnosis; and

a control portion for, upon receiving a transmission demand from an external frequency collecting device, transmitting an executing frequency of the failure diagnosis on the basis of the information related to the failure diagnosis stored in the storing portion, the failure diagnosis being executed when a predetermined travel condition is satisfied.

2. The on-board machine according to claim 1, wherein:

the executing frequency of the failure diagnosis is a ratio between a counted value indicating the number of times of travel counted when the travel condition is satisfied and a counted value indicating the number of times of monitoring counted when a judgment as to normality or abnormality is made by a failure diagnosis carried out during the travel; and

the control portion transmits the executing frequency of the failure diagnosis when the counted value indicating the number of times of travel is equal to or more than a predetermined counted value or when the executing frequency of the failure diagnosis is within a predetermined frequency range.

3. The on-board machine according to claim 1, wherein at the time of the transmission demand for the executing frequency of the failure diagnosis from the frequency collecting device, the control portion transmits at least information including area-of-sale information or travel distance information of the vehicle together with the executing frequency of the failure diagnosis or in place of the executing frequency of the failure diagnosis.

6. The on-board machine according to claim 2, wherein at the time of the transmission demand for the executing frequency of the failure diagnosis from the frequency collecting device, the control portion transmits at least information including area-of-sale information or travel distance information of the vehicle together with the executing frequency of the failure diagnosis or in place of the executing frequency of the failure diagnosis.

4. A frequency collecting device comprising:

a vehicle database for storing vehicle information including a failure diagnosis executing frequency calculated from a failure diagnosis of a vehicle;

a target vehicle extracting portion for extracting a concentration target vehicle from the vehicle database; and

a frequency concentrating portion for concentrating through a communication line the failure diagnosis executing frequency from the concentration target vehicle extracted by the target vehicle extracting portion and for registering the failure diagnosis executing frequency to the vehicle database,

wherein the target vehicle extracting portion extracts the concentration target vehicle on the basis of production control information including at least a type and a production time of the vehicle.

5. A frequency collecting method comprising:

connecting a vehicle and an external frequency collecting device with one another through a communication line, the vehicle having an accumulated record of an executing frequency of a failure diagnosis carried out under a predetermined travel condition; and

concentrating to the frequency collecting device an executing frequency of a failure diagnosis of a vehicle satisfying at least a predetermined concentration condition.