Module for monitoring vehicle operation through onboard diagnostic port

• US 6,832,141 B2
• Filed: 10/25/2002
• Issued: 12/14/2004
• Est. Priority Date: 10/25/2002
• Status: Active Grant

• Current Assignee: Davis Instruments Corporation (Thermo Fisher Scientific Incorporated)
• Original Assignee: Davis Instruments Corporation (Thermo Fisher Scientific Incorporated)
• Inventors: Mohr, Paul, Skeen, Michael, Wacknov, Joel
• Primary Examiner(s): Zanelli, Michael J.
• Application Number:
  US10/281,330
• Publication Number:
  US 20040083041A1
• Time in Patent Office: 781 Days
• Field of Search: 701/35, 701/29, 701/33, 369/21, 340/439, 307/10.1
• US Class Current: 701/35
• 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 5/12 in graphical form

Abstract

An onboard diagnostic memory module is configured to plug into the OBD II port and has a real-time clock and power supply, a microprocessor powered from a standard OBD II port, microprocessor operating firmware, and an attached memory (7 MB). In operation, the onboard diagnostic memory module is preprogrammed with data collection parameters through microprocessor firmware by connection to a PC having programming software for the module firmware. Thereafter, the onboard diagnostic memory module is moved into pin connection with the OBD II port 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 PC to retrieve a trip-based and organized data set including hard and extreme acceleration and deceleration, velocity (in discrete bands), distance traveled, as well as the required SAE-mandated operating parameters.

Claims

1. An onboard diagnostic memory module for an onboard diagnostic port of a vehicle comprising:

a connection to an onboard diagnostic port output of a vehicle;

a memory for receiving and emitting recorded data from the connection to the onboard diagnostic port output of the vehicle;

apparatus for time stamping the recorded data in the memory for receiving and emitting recorded data;

a microprocessor responsive to operational firmware for manipulating data to and from the memory through the connection to the onboard diagnostic port output of the vehicle;

memory operationally connected to the microprocessor for receiving the operational firmware;

the operational firmware including;

data receiving and recording parameters for the memory during the connection to the onboard diagnostic port output of the vehicle; and

,

discharge parameters for discharging the recorded data responsive to intelligent interrogation of a computer having a connection to the onboard diagnostic memory module; and

,

resetting parameters for a malfunction indicator light.

2. An onboard diagnostic memory module for an onboard diagnostic port of a vehicle comprising:

a

connection to an onboard diagnostic port output of a vehicle;

a memory for receiving and emitting recorded data from the connection to the onboard diagnostic port output of the vehicle;

apparatus for time stamping the recorded data in the memory for receiving and emitting recorded data;

a microprocessor responsive to operational firmware for manipulating data to and from the memory through the connection to the onboard diagnostic port output of the vehicle;

memory operationally connected to the microprocessor for receiving the operational firmware;

the operational firmware including;

data receiving and recording parameters for the memory during the connection to the onboard diagnostic port output of the vehicle;

discharge parameters for discharging the recorded data responsive to intelligent interrogation of a computer having a connection to the onboard diagnostic memory module;

interrogating language software for determining the language of the onboard diagnostic port.

3. The onboard diagnostic memory module of claim 2 and wherein:

the operational firmware further includes;

interrogating language software for determining the language of the onboard diagnostic port selected from the group consisting of GM, Ford, ISO, and KWP 2000.

4. A process of recording and analyzing data from the combination of an onboard diagnostic memory module, a vehicle having an onboard diagnostic port, and a computer having intelligent programming for the onboard diagnostic memory module comprising:

providing a vehicle having an onboard diagnostic port for emitting data;

providing an onboard diagnostic memory module including;

a connection to an onboard diagnostic port output of a vehicle;

a memory for receiving and emitting recorded data from the connection to the onboard diagnostic port output of the vehicle;

apparatus for time correlation to the recorded data in the memory for receiving and emitting recorded data;

a microprocessor responsive to operational firmware for manipulating data to and from the memory through the connection to the onboard diagnostic port output of the vehicle;

memory operationally connected to the microprocessor for receiving the operational firmware;

the operational firmware including;

data receiving and recording parameters for the memory during the connection to the onboard diagnostic port output of the vehicle; and

,

discharge parameters for discharging the recorded data responsive to intelligent interrogation of a computer having a connection to the onboard diagnostic memory module;

providing a computer having;

interrogation parameters for the onboard diagnostic memory module; and

,

emitting data receiving and recording parameters to the onboard diagnostic port memory module;

connecting the onboard diagnostic memory module to the computer to receive the data receiving and recording parameters;

sending from the computer to the onboard diagnostic memory module the data receiving and recording parameters;

connecting the onboard diagnostic memory module to the vehicle at the onboard diagnostic port;

recording data during operation of the vehicle at the onboard diagnostic port;

time stamping the recorded speed data with time;

connecting the onboard diagnostic memory module to the computer; and

,

interrogating the onboard diagnostic memory module to recover the recorded time stamped speed data;

downloading the time stamped speed data from the onboard diagnostic port of the vehicle to a computer; and

,

plotting the speed data versus time on a computer; and

,

superimposing indicia of acceleration and/or deceleration.

5. A process for recording to an onboard diagnostic port memory module for an onboard diagnostic port of a vehicle, the process comprising:

providing an onboard diagnostic port memory module having;

a connection to an onboard diagnostic port output of a vehicle;

a memory for receiving and emitting recorded data from the connection to the onboard diagnostic port output of the vehicle;

apparatus for time stamping the recorded data in the memory for receiving and emitting recorded data;

a microprocessor responsive to operational firmware for manipulating data to and from the memory through the connection to the onboard diagnostic port output of the vehicle;

memory operationally connected to the microprocessor for receiving the operational firmware;

the operational firmware including;

data receiving and recording parameters for the memory during the connection to the onboard diagnostic port output of the vehicle; and

,

discharge parameters for discharging the recorded data responsive to intelligent interrogation of a computer having a connection to the onboard diagnostic port memory module;

monitoring the engine for engine operation;

recording data for a trip upon starting of engine operation;

ceasing recording of data for a trip upon ceasing the engine operation;

maintaining vehicle operational parameters between the starting of the engine and the stopping of the engine as a block of data indicating a trip;

reading speed data during the trip;

recording in the memory for receiving and emitting the speed data the speed data during the trip; and

,

integrating the recorded speed data to determine distance traveled during the trip; and

,

differentiating the recorded speed data to determine acceleration and deceleration during the trip.

6. The process for recording to an onboard diagnostic port memory module according to claim 5 including the further step of:

presenting acceleration and deceleration during the trip in hard and extreme bands after the trip.

7. The process for recording to an onboard diagnostic port memory module according to claim 5 including the step of:

recording the time of the trip in the block of data indicating the trip.

8. A process of presenting a graphical record of driver performance comprising the steps of:

providing a clock for providing timestamps;

providing an output of speed;

providing a memory for receiving timestamps and an output of speed;

reading speed data;

differentiating the recorded speed data to determine acceleration and deceleration; and

,

recording in the memory for receiving timestamps and an output of speed the acceleration and/or deceleration during a trip; and

,

plotting timestamps versus speed with indicia indicating acceleration and/or deceleration during the trip.

9. The process of presenting a graphical record of driver performance according to claim 8 comprising the step of:

plotting the indicia of acceleration and/or deceleration in discrete bands of acceleration and/or deceleration exceeding predetermined acceleration and/or deceleration limit.

10. An onboard diagnostic memory module for an onboard diagnostic port of a vehicle comprising:

a connection to an onboard diagnostic port output of a vehicle;

a memory for receiving and emitting recorded data from the connection to the onboard diagnostic port output of the vehicle;

apparatus for time stamping the recorded data in the memory for receiving and emitting recorded data;

a microprocessor responsive to operational firmware for manipulating data to and from the memory through the connection to the onboard diagnostic port output of the vehicle;

memory operationally connected to the microprocessor for receiving the operational firmware;

the operational firmware including;

data receiving and recording parameters for the memory during the connection to the onboard diagnostic port output of the vehicle;

discharge parameters for discharging the recorded data responsive to intelligent interrogation of a computer having a connection to the onboard diagnostic memory module; and

,

apparatus for activating the data receiving and recording parameters upon sensing the electric voltage of the automobile electrical system at a depressed voltage.

11. The onboard diagnostic memory module for an onboard diagnostic port of a vehicle according to claim 10 and wherein the depressed voltage of the automobile electrical system is at least two volts.

12. The onboard diagnostic memory module for an onboard diagnostic port of a vehicle according to claim 10 and wherein interrogation is made for engine RPM upon sensing a depressed voltage.

13. A process of recording to and analyzing data from an onboard diagnostic memory module, a vehicle having an onboard diagnostic port comprising:

providing a vehicle having an onboard diagnostic port for emitting data;

providing an onboard diagnostic memory module including;

a connection to an onboard diagnostic port output of a vehicle;

a memory for receiving and emitting recorded data from the connection to the onboard diagnostic port output of the vehicle;

apparatus for time correlation to the recorded data in the memory for receiving and emitting recorded data;

a microprocessor responsive to operational firmware for manipulating data to and from the memory through the connection to the onboard diagnostic port output of the vehicle;

memory operationally connected to the microprocessor for receiving the operational firmware;

the operational firmware including;

data receiving and recording parameters for the memory during the connection to the onboard diagnostic port output of the vehicle; and

,

discharge parameters for discharging the recorded data responsive to intelligent interrogation of a computer having a connection to the onboard diagnostic memory module;

connecting the onboard diagnostic memory module to the vehicle at the onboard diagnostic port;

sensing the beginning of the operation of a vehicle by sensing low voltage in the electrical system of the automobile and revolutions of the engine in the automobile above a predetermined limit;

recording data during operation of the vehicle at the onboard diagnostic port; and

,

ceasing recording upon sensing revolutions of the engine below a predetermined limit.