Apparatus and method for providing an automated back-up alarm

• US 6,025,778 A
• Filed: 07/10/1998
• Issued: 02/15/2000
• Est. Priority Date: 07/10/1998
• Status: Expired due to Term

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Shatters, Dale R., Dietz, Hans P.
• Primary Examiner(s): TONG, NINA C
• Application Number:
  US09/113,718
• Time in Patent Office: 585 Days
• Field of Search: 340/463, 340/464, 340/468, 340/469, 340/471, 340/472, 340/473, 340/474, 340/438, 340/439, 340/431, 340/425.5, 340/384.1, 315/82, 315/83, 307/9.1, 307/10.1, 307/10.8
• US Class Current: 340/463
• CPC Class Codes: B60Q 1/22 for reverse drive

Abstract

An apparatus and method for providing an automated back-up alarm on a mobile machine including a back-up detector to detect enablement of rearward motion by the mobile machine, a visual indicator, an audible indicator, and a controller. The apparatus detects enablement of rearward motion by the mobile machine and a parameter representative of ambient light, and responsively activates one of the visual indicator and the audible indicator as a function of the mobile machine being enabled to move in a rearward direction and the parameter representative of ambient light.

Claims

1. An apparatus for providing an automated back-up alarm on a mobile machine, comprising:

a visual indicator;

an audible indicator;

a back-up detector adapted to detect enablement of rearward motion by the mobile machine;

a parameter detector adapted to detect a parameter representative of ambient light; and

a controller in communication with the visual indicator, the audible indicator, the back-up detector, and the parameter detector, the controller being adapted to activate one of the visual indicator and the audible indicator as a function of the mobile machine being enabled to move in a rearward direction, and the parameter representative of ambient light.

2. An apparatus, as set forth in claim 1, wherein the visual indicator is adapted to provide a visual indication to an area located rearward of the mobile machine.

3. An apparatus, as set forth in claim 2, wherein the visual indicator includes a strobe.

4. An apparatus, as set forth in claim 1, further including a visual indicator disable switch adapted for manually disabling the visual indicator.

5. An apparatus, as set forth in claim 1, wherein the audible indicator is adapted to provide at least one of a continuous audible tone, an intermittent audible tone, and a horn.

6. An apparatus, as set forth in claim 1, wherein the back-up detector includes a transmission sensor, the transmission sensor being adapted to detect a transmission located on the mobile machine being in a reverse gear.

7. An apparatus, as set forth in claim 1, wherein the back-up detector includes a direction sensor, the direction sensor being adapted to detect direction of drive train motion of the mobile machine.

8. An apparatus, as set forth in claim 1, wherein the back-up detector includes both a transmission sensor, the transmission sensor being adapted to detect a transmission located on the mobile machine being in a reverse gear, and a direction sensor, the direction sensor being adapted to detect direction of drive train motion of the mobile machine.

9. An apparatus, as set forth in claim 1, wherein the controller includes a microprocessor.

10. An apparatus, as set forth in claim 1, wherein the controller is located remote from the mobile machine, the controller being adapted to communicate with the visual indicator, the audible indicator, the back-up detector, and the parameter detector through a wireless communication link.

11. An apparatus, as set forth in claim 1, wherein the parameter detector includes an optical sensor, the parameter representative of ambient light being a level of ambient light detected by the optical sensor.

12. An apparatus, as set forth in claim 11, wherein the optical sensor is located on the mobile machine.

13. An apparatus, as set forth in claim 11, wherein the optical sensor is located remote from the mobile machine.

14. An apparatus, as set forth in claim 11, further including an averaging means, the averaging means being adapted to average a plurality of levels of ambient light, wherein the controller activates one of the visual indicator and the audible indicator as a function of the mobile machine being enabled to move in a rearward direction, and the average of the plurality of levels of ambient light.

15. An apparatus, as set forth in claim 1, wherein the parameter detector includes a clock, wherein the parameter representative of ambient light is a time determined by the clock.

16. An apparatus, as set forth in claim 1, wherein the controller is adapted to activate one of the visual indicator and the audible indicator as a function of the mobile machine being enabled to move in a rearward direction, and both a time, the time being determined by a clock, and a level of ambient light.

17. An apparatus, as set forth in claim 1, wherein the controller is adapted to activate one of the visual indicator and the audible indicator as a function of the mobile machine being enabled to move in a rearward direction, and at least one of a time, the time being determined by a clock, and a level of ambient light.

18. An apparatus, as set forth in claim 1, further including a set of lights located on the mobile machine, wherein the controller is adapted to activate one of the visual indicator and the audible indicator as a function of the mobile machine being enabled to move in a rearward direction, the parameter representative of ambient light, and the set of lights located on the mobile machine being activated.

19. A method for providing an automated back-up alarm on a mobile machine, including the steps of:

detecting enablement of rearward motion by the mobile machine;

determining a parameter representative of ambient light; and

activating one of a visual indicator and an audible indicator as a function of the mobile machine being enabled to move in a rearward direction and the parameter representative of ambient light.

20. A method, as set forth in claim 19, wherein determining the parameter representative of ambient light includes the step of determining a level of ambient light.

21. A method, as set forth in claim 20, further including the step of determining the level of ambient light relative to a threshold value.

22. A method, as set forth in claim 20, wherein determining the parameter representative of ambient light includes the step of averaging the level of ambient light over a predetermined period of time.

23. A method, as set forth in claim 20, wherein determining the level of ambient light includes the step of optically sensing a presence of ambient light.

24. A method, as set forth in claim 19, wherein determining the parameter representative of ambient light includes the step of determining a time on a clock.

25. A method, as set forth in claim 19, wherein determining the parameter representative of ambient light includes the steps of:

determining a level of ambient light; and

determining a time on a clock.

26. A method, as set forth in claim 19, wherein detecting enablement of rearward motion by the mobile machine includes the step of detecting a transmission on the mobile machine being in a reverse gear.

27. A method, as set forth in claim 19, wherein detecting enablement of rearward motion by the mobile machine includes the step of detecting direction of drive train motion of the mobile machine.

28. A method, as set forth in claim 19, wherein detecting enablement of rearward motion by the mobile machine includes the step of:

detecting at least one of a transmission on the mobile machine being in a reverse gear and direction of drive train motion of the mobile machine.

29. A method, as set forth in claim 19, further including the steps of:

determining a disabled condition associated with the visual indicator; and

activating the audible indicator in response to determining the disabled condition associated with the visual indicator and that the mobile machine is enabled to move in a rearward direction.

30. A method, as set forth in claim 29, wherein determining the disabled condition associated with the visual indicator includes determining a state of a visual indicator disable switch.

31. A method, as set forth in claim 29, wherein determining the disabled condition associated with the visual indicator includes determining a fault of the visual indicator.

32. A method, as set forth in claim 19, further including the step of activating one of the visual indicator and the audible indicator as a function of the mobile machine being enabled to move in a rearward direction and a set of lights located on the mobile machine being activated.

33. A method, as set forth in claim 19, further including the step of activating the visual indicator as a function of the mobile machine being enabled to move in a rearward direction, a set of lights located on the mobile machine being activated, and the parameter representative of ambient light.

34. An apparatus for providing an automated back-up alarm for a mobile machine, comprising:

means for detecting enablement of rearward motion by the mobile machine;

means for determining a parameter representative of ambient light; and

means for activating one of a visual indicator and an audible indicator as a function of the mobile machine being enabled to move in a rearward direction and the parameter representative of ambient light.

35. An apparatus, as set forth in claim 34, further comprising:

means for determining a disabled condition associated with the visual indicator; and

means for activating the audible indicator in response to determining the disabled condition associated with the visual indicator and determining that the mobile machine is enabled to move in a rearward direction.

36. An apparatus, as set forth in claim 34, further comprising means for activating the visual indicator as a function of the mobile machine being enabled to move in a rearward direction and a set of lights located on the mobile machine being activated.

37. An apparatus, as set forth in claim 34, further comprising means for activating the visual indicator as a function of the mobile machine being enabled to move in a rearward direction, a set of lights located on the mobile machine being activated, and the parameter representative of ambient light.

38. An apparatus for providing an automated back-up alarm on a mobile machine, comprising:

a strobe, the strobe being adapted to provide a visual indication to an area located rearward of the mobile machine;

an audible indicator;

a transmission sensor, the transmission sensor being adapted to detect a transmission located on the mobile machine being in a reverse gear;

a direction sensor, the direction sensor being adapted for detecting direction of drive train motion of the mobile machine;

an optical sensor adapted to detect a level of ambient light; and

a controller in communication with the strobe, the audible indicator, the transmission sensor, the direction sensor, and the optical sensor, the controller being adapted to activate one of the strobe and the audible indicator as a function of the transmission sensor, the direction sensor, and the level of ambient light detected by the optical sensor.

39. An apparatus for providing an automated back-up alarm on a mobile machine, comprising:

a strobe, the strobe being adapted to provide a visual indication to an area located rearward of the mobile machine;

an audible indicator, the audible indicator being adapted to provide an intermittent audible tone;

a transmission sensor, the transmission sensor being adapted to detect a transmission located on the mobile machine being in a reverse gear;

a clock adapted to determine a time; and

a controller in communication with the strobe, the audible indicator, the transmission sensor, and the clock, the controller being adapted to activate one of the strobe and the audible indicator as a function of the transmission sensor and the time determined by the clock.

40. An apparatus for providing an automated back-up alarm on a mobile machine, comprising:

a visual indicator, the visual indicator being adapted to provide a visual indication to an area located rearward of the mobile machine;

an audible indicator, the audible indicator being adapted to provide a continuous audible tone;

a transmission sensor, the transmission sensor being adapted to detect a transmission located on the mobile machine being in a reverse gear;

a direction sensor, the direction sensor being adapted for detecting direction of drive train motion of the mobile machine;

a clock adapted to determine a time;

an optical sensor adapted to detect a level of ambient light; and

a controller in communication with the visual indicator, the audible indicator, the transmission sensor, the direction sensor, the clock, and the optical sensor, the controller being adapted to activate one of the visual indicator and the audible indicator as a function of the transmission sensor, the direction sensor, the time determined by the clock, and the level of ambient light detected by the optical sensor.

41. An apparatus for providing an automated back-up alarm on a mobile machine, comprising:

a plurality of strobes, the plurality of strobes being adapted to provide a visual indication to an area located rearward of the mobile machine;

an audible indicator;

a transmission sensor associated with a transmission shift lever, the transmission sensor being adapted to detect a transmission located on the mobile machine being in a reverse gear;

a direction sensor, the direction sensor being adapted for detecting direction of drive train motion of the mobile machine;

a clock adapted to determine a time;

a plurality of optical sensors adapted to detect a level of ambient light; and

a controller in communication with the plurality of strobes, the audible indicator, the transmission sensor, the direction sensor, the clock, and the plurality of optical sensors, the controller being adapted to activate at least one of the plurality of strobes and the audible indicator as a function of the transmission sensor, the direction sensor, the time determined by the clock, and the level of ambient light detected by the plurality of optical sensors.

42. An apparatus for providing an automated back-up alarm on a mobile machine, comprising:

a visual indicator;

an audible indicator;

a back-up detector adapted to detect enablement of rearward motion by the mobile machine;

a clock adapted to determine a time; and

a controller in communication with the visual indicator, the audible indicator, the back-up detector, and the clock, the controller being adapted to activate one of the visual indicator and the audible indicator as a function of the mobile machine being enabled to move in a rearward direction, and the time determined by the clock.