| 摘要 |
An onboard diagnostic memory module (10) is configured to plug into the OBD II port (1) and has a real-time clock (12) and power supply (11), a microprocessor (13) powered from a standard OBD II (1), microprocessor operating firmware, and an attached memory (7 MB) (15). In operation, the onboard diagnostic memory module (10) is preprogrammed with data collection parameters through microprocessor firmware by connection (20) to a computer, such as a PC, having programming software for the module firmware. Thereafter, the onboard diagnostic memory module (10) is moved into pin connection with the OBD II port (1) of a vehicle. Data is recorded on a "trip" basis, preferably using starting of the engine to define the beginning of the trip and stopping of the engine to define the end of the trip. Intelligent interrogation occurs by interpretive software from an interrogating computer to retrieve a trip-based and organized data set.
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