Diagnostic information collecting device

• US 20060247831A1
• Filed: 07/29/2004
• Published: 11/02/2006
• Est. Priority Date: 08/01/2003
• Status: Abandoned Application

• Current Assignee: Nissan Diesel Motor Co., Ltd. (Isuzu Motors Limited)
• Original Assignee: Nissan Diesel Motor Co., Ltd. (Isuzu Motors Limited)
• Inventors: Shimokoshi, Mitsuru
• Application Number:
  US10/557,138
• Publication Number:
  US 20060247831A1
• Time in Patent Office: Days
• US Class Current: 701/29
• CPC Class Codes: F02D 41/22 Safety or indicating devices for abnormal conditions in air/fuel ratio feedback systems F02D41/1495, in electric control linkage F02D11/107, in purge control systems F02M25/0809
• CPC Class Codes: F02D 41/266 the computer being backed-up or assisted by another circuit, e.g. analogue
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: G07C 5/085 using electronic data carriers

Abstract

A diagnostic data collection unit (10) that collects diagnostic data of a vehicle is connected to electronic control units (11) and (12) for the vehicle through a CAN, and includes a specifying device for measurement items that specifies the measurement items to the electronic control units (11) and (12), a recording device (24) for diagnostic data that records control data based on the specified measurement items and operating data of each apparatus sent from the electronic control units (11) and (12), and a storage device (25) for recorded data that stores the recorded data of the recording device for the diagnostic data of during a predetermined period before or after a trigger generating device is activated.

Claims

1. A diagnostic data collection unit that collects diagnostic data of a vehicle, comprising:

input-output devices that communicates data with an electronic control unit for a vehicle through a Control Area Network (CAN);

a specifying device for measurement items that specifies the measurement items to the electronic control unit;

a recording device for diagnostic data that records control data based on a specified measurement items and operating data of each apparatus sent from the electronic control unit;

a trigger generating device that specifies import of the diagnostic data; and

a storage device that stores the recorded data of the recording device for the diagnostic data during a predetermined period before or after the trigger generating device is activated.

2. The diagnostic data collection unit according to claim 1, wherein:

the specifying device for the measurement items specifies a pattern code installing a plurality of the measurement items to the electronic control unit.

3. The diagnostic data collection unit according to claim 2, wherein:

the pattern code is set by a computer that is externally connected and used for diagnostic analysis.

4. The diagnostic data collection unit according to claim 3, wherein:

the setting of the pattern code by the computer is provided before the vehicle runs.

5. The diagnostic data collection unit according to claim 1, wherein:

the trigger generating device is manually operated by an operator to generate a trigger.

6. The diagnostic data collection unit according to claim 1, further comprising:

a recording device for an analog voltage that records and stores a sensor driving voltage of each apparatus of the vehicle.