Hidden acquisition module for acquiring data from a vehicle

• US 6,216,069 B1
• Filed: 03/10/1999
• Issued: 04/10/2001
• Est. Priority Date: 03/10/1999
• Status: Expired due to Term

• Current Assignee: FCA US LLC (Stellantis NV)
• Original Assignee: Daimler Chrysler Corporation (Mercedes-Benz Group AG)
• Inventors: Wind, Robert C., Goudie, Greg P., Mahadevappa, M. S.
• Primary Examiner(s): Zanelli, Michael J.
• Application Number:
  US09/266,139
• Time in Patent Office: 762 Days
• Field of Search: 701/35, 701/36, 701/1, 307/9.1, 307/10.1, 369/21, 377/15, 377/16
• US Class Current: 701/36
• CPC Class Codes: G07C 5/085 using electronic data carriers

Abstract

A data acquisition module that monitors the operation and duration of the operation of an electrical vehicle device, such as starter motor, and is readily mounted at an inconspicuous location in the vehicle. The data acquisition module stores each activation of the vehicle device and its duration in an electrical erasable programmable read-only memory to be downloaded at a future time. A microprocessor and a bank of EEPROMs are provided where the activation count is stored in the microprocessor and the duration is stored in the bank of EEPROMs. The address of a particular EEPROM is the location where an event duration is stored.

Claims

1. A data acquisition device for a vehicle comprising:

a controller responsive to an input signal, said input signal being periodically on and off where each time the signal is on is an event, said controller including a counter providing a count of the number of events, said controller further providing a duration signal indicative of the time of each event; and

at least one non-volatile memory responsive to and storing the duration signal, wherein the at least one memory is a plurality of non-volatile memories, each of the memories being separately identified by a different address where the count identifies a memory address.

2. The device according to claim 1 wherein the at least one non-volatile memory is an EEPROM.

3. The device according to claim 2 wherein the at least one memory is a bank of EEPROMs electrically connected in parallel.

4. The device according to claim 1 further including a connector, said connector providing connections to the controller to program the controller and download data from the controller.

5. The device according to claim 1 further comprising a voltage regulator, said voltage regulator applying a regulated voltage to the controller.

6. The device according to claim 1 wherein the controller is a microprocessor, said microprocessor including a non-volatile memory, said non-volatile memory in the microprocessor storing the counts.

7. The device according to claim 1 further comprising a voltage divider, said input signal being applied to the voltage divider prior to being applied to the controller, said input signal being a voltage divided input signal applied to the controller.

8. The device according to claim 1 wherein the data acquisition device acquires data from a vehicle component.

9. A data acquisition module mounted to a vehicle for monitoring the number of events and the duration of each event of an electrical vehicle device, said module comprising:

a data input circuit responsive to an electrical output signal from the vehicle device, said electrical output signal being a high signal if the vehicle device is operating and being a low signal if the vehicle device is not operating;

a controller being responsive to the electrical output from the data input circuit, said controller incrementing an event counter to identify the number of the event when the electrical output signal goes from a low signal to a high signal, said controller storing the number of the event counter in a non-volatile memory, said controller also providing a count signal of the duration that each high signal remains high during an event; and

a bank of non-volatile memories responsive to the count signals from the controller, said bank of memories storing the count signals in a predetermined manner, wherein each of the memories in the bank of memories is identified by a distinct address, wherein each event number is an address of one of the memories and wherein the memories are loaded with the event duration by the memories address.

10. The module according to claim 9 wherein the bank of memories is a bank of EEPROMs electrically connected in parallel.

11. The module according to claim 9 wherein the controller is a microprocessor including an EEPROM, said EEPROM storing the number of the event counter.

12. The module according to claim 9 further including a program connector, said connector providing connections to the controller to program the controller and download data from the controller.

13. The module according to claim 9 wherein the data input circuit includes a voltage divider that divides the electrical output signal from the vehicle device.

14. The module according to claim 9 wherein the vehicle component is a vehicle starter.

15. The module according to claim 9 wherein the controller further stores a list of the longest predetermined number of events.

16. A method of acquiring data from an electrical vehicle device, said method comprising the steps of:

monitoring an output signal from the vehicle device that is indicative of the activation of the device;

storing a count of the number of times the device is activated;

storing a value of the duration of the length of time when the device is activated, said steps of storing including storing the count and value in a plurality of non-volatile memories, where each memory is separately identified by a different address and where the count identifies a memory address; and

simultaneously downloading the data of the activation and the length of time the device is activated.

17. The method according to claim 16 wherein the step of storing the duration of the activation includes storing the duration in a bank of non-volatile memories.

18. The method according to claim 16 wherein the step of storing a count includes storing the count in a non-volatile memory in a microprocessor.

19. The method according to claim 16 further comprising the step of storing a duration of the longest predetermined number of events.

20. The method according to claim 19 wherein the step of storing the duration of the longest events includes storing the duration of the longest 25 events in a non-volatile memory in a microprocessor.