Warning system

• US 4,184,146 A
• Filed: 04/28/1977
• Issued: 01/15/1980
• Est. Priority Date: 04/28/1977
• Status: Expired due to Term

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Americas Company (Caterpillar Incorporated)
• Inventors: Fuzzell, Joe E., Fratzke, Lawrence F.
• Primary Examiner(s): Yusko, Donald J.
• Assistant Examiner(s): Nowicki, Joseph E.
• Application Number:
  US05/791,909
• Time in Patent Office: 992 Days
• Field of Search: 340/52 F, 340/412, 340/413, 340/414, 340/415, 340/213 Q, 340/500, 340/517, 340/518, 340/519, 340/520, 340/521, 307/10 R
• US Class Current: 340/459
• CPC Class Codes: G07C 5/0816 Indicating performance data, e.g. occurrence of a malfunction

Abstract

A system for giving warning of the existence of an undesirable state of one or more of a plurality of monitored operating conditions of an engine-powered vehicle. Three degrees of warning are given, depending upon the criticality of the monitored condition. Individually energizable low-intensity warning indicators are provided for each of the monitored conditions, and a multiplexing circuit is provided for staggered pulsing of these indicators. The existence of any critical fault will cause an intermittent operation of a more intense warning device, while the existence of a highly critical fault will give an additional intermittent warning of a still greater degree of intensity.

Claims

1. An improvement in a monitor system for an engine-powered vehicle having a battery and a disconnect switch for connecting said battery to the operational circuits of said vehicle, said vehicle having a plurality of monitor devices, each of which is associated with an operating condition of said vehicle, and each of which is capable of affecting an electrical circuit in response to the existence of an undesirable state of the condition with which the monitor device is associated, the improvement comprising:

(a) a plurality of electrically energizable warning indicators, each of which is associated with a different one of said monitor devices,

(b) oscillator means having a first operative output during a portion, and a second operative output during a different portion, of each cycle of operation of said oscillator means,

(c) first circuit means operatively associated with a preselected group of said warning indicators and with said oscillator for individually energizing any of said preselected group of indicators in response to an undesirable state condition of the monitor device with which it is associated during, but only during, the first operative outputs of said oscillator means,

(d) second circuit means operatively associated with the remaining of said warning indicators and with said oscillator for individually energizing any of said remaining indicators in response to an undesirable state condition of the monitor device during, but only during, the second operative outputs of said oscillator means.

2. The improvement as set forth in claim 1 wherein said first circuit means (c) includes:

(e) at least one gate means having first and second inputs and an operative output during time coincidence of operative signals at both of said inputs,

(f) means for energizing one of said indicators in response to the existence of the operative output from said gate means,

(g) first coupling means coupling said first input of said gate means to the monitor device associated with said one indicator for applying an operative signal to said first input in response to an undesirable state condition of said monitor device,

(h) second coupling means coupling said second input of said gate means to one of said outputs of said oscillator means for applying operative signals to said second input of said gate means in response to operative outputs of said oscillator means.

3. The improvement as set forth in claim 2 wherein said means coupling said first input of said gate means to said monitor device includes a flip-flop means having an input coupled to said monitor device and an output coupled to said first input of said gate means.

4. The improvement as set forth in claim 2, wherein said first coupling means (g) includes time delay means interposed between said monitor device and said gate means for delaying application of said operative signal to said first input of said gate means until said monitor device has remained in an undesirable state condition for a predetermined length of time.

5. The improvement as set forth in claim 1 and further including:

(e) a manually operable test switch having an operative and an inoperative position,

(f) means operatively associated with said first circuit means (c) and said second circuit means (d) and operable when said test switch is in its operative position for simultaneously energizing all of said warning indicators of said preselected group during, and only during, the existence of said first operative outputs of said oscillator means, and for simultaneously energizing all of said remaining warning indicators during, but only during, the second operative outputs of said oscillator means.

6. The improvement as set forth in claim 1 wherein said warning indicators are light-emitting diodes.

7. The improvement as set forth in claim 1, wherein all of said warning indicators (a) are sensibly the same when energized and further including:

(e) a master warning indicator sensibly dissimilar, when energized, to said warning indicators (a),

(f) means operatively associated with a preselected group of said monitor devices for energizing said master warning indicator in response to an undesirable state condition of any of the monitor devices of said group.

8. The improvement as set forth in claim 7 wherein said warning indicators (a) are relatively low-intensity light-emitting diodes and wherein said master warning indicator is a relatively high-intensity light.

9. The improvement as set forth in claim 7, and further including:

(g) an auxiliary warning indicator sensibly dissimilar, when energized, to said master warning indicator,

(h) means operatively associated with a sub-group within said preselected group of monitor devices for energizing said auxiliary warning indicator in response to an undesirable state condition of any monitor device of said sub-group.

10. The improvement as set forth in claim 8 wherein said warning indicators (a) are relatively low-intensity light-emitting diodes, said master indicator is a relatively high-intensity light and said auxiliary warning indicator is an audible device.

11. The inprovement as set forth in claim 1, wherein all of said warning indicators (a) are sensibly similar when energized, and further including:

(e) a master warning indicator sensibly dissimilar, when energized, from said warning indicators (a),

(f) a second oscillator means having alternative operative and inoperative outputs,

(g) means responsive to the presence of said operative outputs of said second oscillator means for energizing said master warning indicator,

(h) means operatively associated with a preselected group of said monitor devices for starting said second oscillator means into operation in response to an undesirable state condition of any monitor device of said preselected group.

12. The improvement as set forth in claim 11 and further including:

(i) an auxiliary warning indicator sensibly dissimilar, when energized, to said master warning indicator,

(j) means operatively associated with a sub-group within said preselected group of said monitor devices for energizing said auxiliary warning indicator in response to an undesirable state condition of any monitor device of said sub-group, but only during the existence of operative outputs of said second oscillator means.

13. The improvement set forth in claim 12 wherein said warning indicators (a) are relatively low-intensity light-emitting diodes, wherein said master indicator is a relatively high-intensity light and wherein said auxiliary warning indicator is an audible device.

14. The improvement as set forth in claim 11 and further including:

(i) a horn,

(j) a third oscillator means having alternate operative and inoperative outputs of a frequency substantially higher than that of said second oscillator means,

(k) means operatively associated with a sub-group within said preselected group of said monitor devices for energizing said horn in response to an undesirable state condition of any monitor device of said sub-group, but only during time coincidence of operative outputs of said second and third oscillator means.

15. The improvement as set forth in claim 1 wherein said warning indicators are sensibly the same and further including:

(e) an audible warning device sensibly dissimilar to said warning indicators,

(f) a second oscillator means having alternate operative and inoperative outputs,

(g) means operatively associated with a preselected group of said monitor devices for starting said second oscillator means into operation in response to an undesirable state condition of any monitor device of said preselected group,

(h) means responsive to said second oscillator means for energizing said audible warning device during the existence of operative outputs of said second oscillator means.

16. The improvement as set forth in claim 1 wherein said warning indicators are sensibly the same and further including:

(e) an audible warning device sensibly dissimilar to said warning indicators,

(f) a second oscillator means having alternate operative and inoperative outputs,

(g) a third oscillator means having alternate operative and inoperative outputs of a frequency substantially higher than that of said second oscillator means,

(h) means operatively associated with a preselected group of said monitor devices for starting said second oscillator means into operation in response to an undesirable state condition of any monitor device of said preselected group,

(i) means responsive to said second and third oscillator means for energizing said audible warning device during time coincidence of the operative outputs of said second and third oscillator means.

17. The improvement as set forth in claim 1 and further including:

(e) a gate means having a plurality of inputs, each of said inputs being associated with a different one of a preselected group of said monitor devices,

(f) third circuit means for applying an operative signal to each input of said gate means in response to an undesirable state condition of the monitor device associated therewith, said gate means being operable to have an operative output in response to the application by said third circuit means (f) of an operative signal to any of the inputs of said gate means,

(g) a second oscillator means having alternate operative and inoperative outputs during each cycle of operation thereof,

(h) means for starting said second oscillator means into operation in response to the existence of said operative output of said gate means,

(i) a master indicator device,

(j) means responsive to operation of said second oscillator means for energizing said master indicator device during each operative output of said second oscillator means.

18. The improvement as set forth in claim 1 and further including:

(e) a first gate means having a plurality of inputs, each of said inputs being associated with a different one of a first preselected group of said monitor devices,

(f) third circuit means for applying an operative signal to each input of said first gate means (e) in response to an undesirable state condition of the monitor device associated therewith,

said first gate means (e) being operable to have an operative output in response to the application by said third circuit means (f) of an operative signal to any of the inputs of said first gate means,

(g) a second gate means having a plurality of inputs, each of said inputs being associated with a different one of a second, and different, preselected group of said monitor devices,

(h) fourth circuit means for applying an operative signal to each input of said second gate means (g) in response to an undesirable state condition of the monitor device associated therewith,

said second gate means (g) being operable to have an operative output in response to the application by said fourth circuit means (h) of an operative signal to any of the inputs of said second gate means,

(i) a second oscillator means having alternate operative and inoperative outputs during each cycle of operation thereof,

(j) means for starting said second oscillator means into operation in response to the existence of said operative output of either of said first gate means (e) or said second gate means (g),

(k) a master indicator device,

(l) means responsive to operation of said second oscillator means (i) for energizing said master indicator device during each operative output of said second oscillator means,

(m) an auxiliarly indicator device sensibly dissimilar to said master indicator device,

(n) means responsive to operation of said second oscillator means for energizing said auxiliary indicator device during, and only during, time coincidence of the operative outputs of said second oscillator means and said second gate means (g).

19. The improvement as set forth in claim 1 and further including:

(e) a first gate means having a plurality of inputs, each of said inputs being associated with a different one of a first preselected group of said monitor devices,

(f) third circuit means for applying an operative signal to each input of said first gate means (e), in response to an undesirable state condition of the monitor device associated therewith,

said first gate means (e) being operable to have an operative output in response to the application by said third circuit means (f) of an operative signal to any of the inputs of said first gate means,

(g) a second gate means having a plurality of inputs, each of said inputs being associated with a different one of a second, and different, preselected group of said monitor devices,

(h) fourth circuit means for applying an operative signal to each input of said second gate means (g) in response to an undesirable state condition of the monitor device associated therewith,

said second gate means (g) being operable to have an operative output in response to the application by said fourth circuit means (h) of an operative signal to any of the inputs of said second gate means,

(i) a second oscillator means having alternate operative and inoperative outputs during each cycle of operation thereof,

(j) means for starting said second oscillator means into operation in response to the existence of said operative output of either of said first gate means (e) or said second gate means (g),

(k) a third oscillator means having alternate operative and inoperative outputs during each cycle of operation thereof, said third oscillator means having a frequency of operation substantially higher than that of said second oscillator means,

(l) a relatively high-intensity light,

(m) means responsive to operation of said second oscillator means for energizing said high-intensity light during each operative output of said second oscillator means,

(n) an audible warning device,

(o) means responsive to operation of said second oscillator means for energizing said audible warning device during, and only during, time coincidence of the operative outputs of said second and third oscillator means and said second gate means (g).

20. An improvement in a monitor system for an engine-speed vehicle having a battery and a disconnect switch for connecting said battery to the operational circuits of said vehicle, said vehicle having a plurality of monitor devices, each of which is associated with an operating condition of said vehicle, and each of which is capable of affecting an electrical circuit in response to the existence of an undesirable state of the condition with which the monitor device is associated, the improvement comprising:

(a) a plurality of gate means, one for and associated with each of said monitor devices, each gate means having first and second inputs,

(b) a plurality of circuit means, each of which is operatively associated with a different one of said plurality of gate means and each of which circuit means is operable to apply an operative signal to the first input of the gate means operatively associated therewith in response to an undesirable state condition of the monitor device associated with said gate means,

(c) means including an oscillator forr applying an operative signal simultaneously to the second input of all of a first group of said gate means during a first portion of each cycle of operation of said oscillator and for applying an operative signal simultaneously to the second input of all the remaining gate means during a second and different portion of each cycle of operation of said oscillator,

each of said plurality of gate means being operable to have an operative output in response to and during time coincidence of the application by said circuit means of an operative signal to the first input thereof and the application by said means including an oscillator of an operative signal to the second input thereof,

(d) a plurality of warning indicators, one for and associated with each of said plurality of gate means,

(e) means for individually energizing each of said warning indicators in response to the existence of the operative output of the gate means associated therewith.

21. The improvement as set forth in claim 20 wherein said warning indicators are light-emitting diodes.

22. The improvement set forth in claim 20 and further including:

(f) a manually operable test switch,

(g) means responsive to operation of said test switch for applying an operative signal to the first input of all of said gate means of a character which is the same as that of the operative signals applied to said gate means by said plurality of circuit means (d).

23. The improvement as set forth in claim 20, wherein one of said plurality of circuit means (d) includes a bistable flip-flop means having an output coupled to the one of said gate means which is operatively associated with the said one circuit means and an input coupled to the monitor device associated with the one of said gate means.

24. The improvement as set forth in claim 20, wherein one of said plurality of circuit means (d) includes time delay means coupled between the one of said gate means which is operatively associated with said one circuit means and the monitor device associated with the said one of said gate means for delaying the application of an operative signal to the said one of said gate means until the monitor device associated therewith has remained in an undesirable stated condition for a predetermined length of time.

25. The improvement as set forth in claim 20 and further including:

(f) a further gate means having a plurality of inputs, each of said inputs being associated with a different one of a first preselected group of said monitor devices,

(g) a further circuit means for applying an operative signal to each input of said further gate means (f) in response to an undesirable state condition of the monitor device associated therewith,

said further gate means (f) being operable to have an operative output in response to the application by said further circuit means (g) of an operative signal to any of the inputs of said further gate means,

(h) a second oscillator having alternate operative and inoperative outputs during each cycle of operation thereof,

(i) means for starting said second oscillator into operation in response to the existence of the operative output of said further gate means (f),

(j) a master indicator device,

(k) means responsive to operation of said second oscillator for energizing said master indicator device during each operative output of said second oscillator.

26. The improvement as set forth in claim 20 and further including:

(f) a further gate means having a plurality of inputs, each of said inputs being associated with a different one of a first preselected group of said monitor devices,

(g) further circuit means for applying an operative signal to each input of said further gate means (f) in response to an undesirable state condition of the monitor device associated therewith,

said further gate means (f) means operable to have an operative output in response to the application by said further circuit means (g) of an operative signal to any of the inputs of said further gate means,

(h) a still further gate means having a plurality of inputs, each of said inputs being associated with a different one of a second, and different, preselected group of said monitor devices,

(i) still further circuit means for applying an operative signal to each input of said still further gate means (h) in response to an undesirable state condition of the monitor device associated therewith,

said still further gate means (h) being operable to have an operative output in response to the application by said still further circuit means (i) of an operative signal to any of the inputs of said still further gate means,

(j) a second oscillator having alternate operative and inoperative outputs during each cycle of operation thereof,

(k) means for starting said second oscillator into operation in response to the existence of the operative input of either of said further gate means (f) or said still further gate means (h),

(l) a master indicator device,

(m) means responsive to operation of said second oscillator for energizing said master indicator device during each operative input of said second oscillator,

(n) an auxiliary indicator device,

(o) means responsive to operation of said second oscillator for energizing said auxiliary indicator device during, and only during, time coincidence of the operative outputs of said second oscillator and said still further gate means (h).

27. The improvement as set forth in claim 26 wherein said warning indicators (a) are light-emitting diodes.

28. The improvement as set forth in claim 27 and further including:

(o) a manually operable test switch,

(p) means responsive to operation of said test switch for applying an operative signal to the first input of all of said plurality of gate means a character which is the same as that of the operative signals applied to said gate means by said plurality of circuit means (d).

29. The improvement as set forth in claim 20 and further including:

(f) a further gate means having a plurality of inputs and an operative output when an operative signal is applied to any of said inputs, each of said inputs being associated with a different one of a first preselected group of said monitor devices,

(g) further circuit means for applying an operative signal to each input of said further gate means (f) in response to an undersirable state condition of the monitor device associated therewith,

(h) a still further gate means having a plurality of inputs and an operative output when an operative signal is applied to any of said inputs, each of said inputs being associated with a different one of a second, and, different, preselected group of said monitor devices,

(i) still further means for applying an operative signal to each input of said still further gate means (h) in response to an undesirable state condition of the monitor device associated therewith,

(j) a second oscillator having alternate operative and inoperative outputs during each cycle of operation thereof,

(k) means for starting said second oscillator into operation in response to the existence of an operative output of either of said further gate means (f) or said still further gate means (h),

(l) a third oscillator having alternate operative and inoperative outputs during each cycle of operation thereof, said third oscillator having a frequency of operation substantially higher than that of said second oscillator,

(m) a master indicator device,

(n) means responsive to operation of said second oscillator for energizing said master indicator device during each operative output of said second oscillator,

(o) an auxiliary indicator device,

(p) means responsive to operation of said second oscillator for energizing said auxiliary indicator device during, and only during, time coincidence of the operative outputs of said second and third oscillators and said still further gate means (h).

30. An improvement in a monitor system for an engine-powered vehicle having a battery and a disconnect switch for connecting said battery to the operational circuits of said vehicle, said vehicle having a plurality of monitor devices, each of which is associated with an operating condition of said vehicle, and each of which is capable of affecting an electrical circuit in response to the existence of an undesirable state of the condition with which the monitor device is associated, the improvement comprising:

(a) a plurality of electrically energizable warning indicators, sensibly similar to each other when energized, each of which is associated with a different one of said monitor devices,

(b) circuit means operatively associated with each of said warning indicators and the monitor device associated therewith for individually energizing said warning indicators in response to an undesirable state condition of the monitor device associated therewith,

(c) a master warning indicator sensibly dissimilar, when energized, to said warning indicators (a),

(d) means operatively associated with a preselected group of said monitor devices for energizing said master warning indicator in response to an undesirable state condition of any of the monitor devices of said group,

(e) an auxiliary warning indicator sensibly dissimilar, when energized, to said master warning indicator,

(f) means operatively associated with a sub-group within said preselected group of monitor devices for energizing said auxiliary warning indicator in response to an undesirable state condition of any monitor device of said sub-group.

31. The improvement as set forth in claim 30 wherein said warning indicators (a) are relatively low-intensity light-emitting diodes, said master indicator is a relatively high-intensity light and said auxiliary warning indicator is an audible device.

32. An improvement in a monitor system for an engine-powered vehicle having a battery and a disconnect switch for connecting said battery to the operational circuits of said vehicle, said vehicle having a plurality of monitor devices, each of which is associated with an operating condition of said vehicle, and each of which is capable of affecting an electrical circuit in response to the existence of an undesirable state of the condition with which the monitor device is associated, the improvement comprising:

(a) a plurality of electrically energizable warning indicators, sensibly similar to each other when energized, each of which is associated with a different one of said monitor devices,

(b) circuit means operatively associated with each of said warning indicators and the monitor device associated therewith for individually energizing said warning indicators in response to an undesirable state condition of the monitor device associated therewith,

(c) a master warning indicator sensibly dissimilar, when energized, from said warning indicators (a),

(d) an oscillator means having alternative operative and inoperative outputs,

(e) means responsive to the presence of said operative outputs for energizing said master warning indicator,

(f) means operatively associated with a preselected group of said monitor devices for starting said oscillator means into operation in response to an undesirable state condition of any monitor device of said preselected group.

33. The improvement as set forth in claim 32 and further including:

(g) an auxiliary warning indicator sensibly dissimilar, when energized, to said master warning indicator,

(h) means operatively associated with a sub-group within said preselected group of said monitor devices for energizing said auxiliary warning indicator in response to an undesirable state condition of any monitor device of said sub-group, but only during the existence of operative outputs of said oscillator means.

34. The improvement set forth in claim 33 wherein said warning indicators (a) are relatively low-intensity light-emitting diodes, wherein said master indicator is a relatively high-intensity light and wherein said auxiliary warning indicator is an audible device.

35. An improvement in a motor system for an engine-powered vehicle having a battery and a disconnect switch for connecting said battery to the operational circuits of said vehicle, said vehicle having a plurality of monitor devices, each of which is associated with an operating condition of said vehicle, and each of which is capable of affecting an electrical circuit in response to the existence of an undesirable state of the condition with which the monitor device is associated, the improvement comprising:

(a) a plurality of electrically energizable warning indicators, sensibly similar to each other when energized, each of which is associated with a different one of said monitor devices,

(b) first circuit means operatively associated with each of said warning indicators and the monitor device associated therewith for individually energizing said warning indicators in response to an undesirable state condition of the monitor device associated therewith,

(c) a first gate means having a plurality of inputs, each of said inputs being associated with a different one of a first preselected group of said monitor devices,

(d) second circuit means for applying an operative signal to each input of said first gate means in response to an undesirable state condition of the monitor device associated therewith,

said first gate means (c) being operable to have an operative output in response to the application by said second circuit means (d) of an operative signal to any of the inputs of said first gate means,

(e) a second gate means having a plurality of inputs, each of said inputs being associated with a different one of a second, and different, preselected group of said monitor devices,

(f) third circuit means for applying an operative signal to each of said second gate means in response to an undesirable state condition of the monitor device associated therewith,

said second gate means (e) being operable to have an operative output in response to the application by said third circuit means (f) of an operative signal to any of the inputs of said second gate means,

(g) an oscillator having alternate operative and inoperative outputs during each cycle of operation thereof,

(h) means for starting said oscillator into operation in response to the existence of the operative output of either of said first or second gate means,

(i) a master indicator device,

(j) means responsive to operation of said oscillator for energizing said master indicator device during each operative output of said oscillator,

(k) an auxiliary indicator device,

(l) means responsive to operation of said oscillator for energizing said auxiliary indicator device during, and only during, time coincidence of the operative outputs of said second oscillator and said second gate means.

36. The improvement set forth in claim 35 wherein said warning indicators (a) are relatively low-intensity light-emitting diodes, wherein said master indicator is a relatively high-intensity light and wherein said auxiliary warning indicator is an audible device.