Fluid Level Monitoring System and Method

• US 20120125442A1
• Filed: 11/23/2010
• Published: 05/24/2012
• Est. Priority Date: 11/23/2010
• Status: Active Grant

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Sutherland, Thomas M., Ehle, Austin D., Aneloski, Randy, Daiberl, Luke J., Elder, Jack
• Granted Patent: US 8,659,413 B2
• Time in Patent Office: Days
• US Class Current: 137/2
• CPC Class Codes: E02F 9/268 with failure correction follow-up actions
• CPC Class Codes: Y10T 137/0324 With control of flow by a condition or characteristic of a fluid
• CPC Class Codes: Y10T 137/8342 Liquid level responsive indicator, recorder or alarm

Abstract

A fluid level monitoring system may include a control panel having a plurality of input devices, each corresponding to a monitored fluid of a machine, and a plurality of indicators, each corresponding to one of the input devices. The indicators may provide visual displays of fluid level statuses for the monitored fluids. The fluid level monitoring system may further include a message display device that may display a fluid level status message for one of the monitored fluids based on the actuation of the corresponding input device of the control panel.

Claims

1. A fluid level monitoring system for a machine having an onboard information system (OIS) configured to monitor a fluid level status for each of a plurality of fluids used in the operation of the machine, wherein the OIS stores a fluid level status value for each of the monitored fluids, the fluid level monitoring system comprising:

a control panel comprising;

a plurality of input devices, with each input device corresponding to one of the monitored fluids of the machine, and

a plurality of indicators, with each indicator corresponding to one of the input devices, wherein the input devices and indicators are operatively connected to the OIS, and wherein the indicators are configured to provide a visual display of a fluid level status for each of the monitored fluids; and

a message display device comprising;

a display screen, and

a processor operatively connected to the display screen and to the OIS, the processor being programmed to cause the display screen to display a fluid level status message for one of the monitored fluids, wherein the monitored fluid for which the fluid level status message is displayed is determined based on the actuation of the corresponding input device of the control panel.

2. The fluid level monitoring system of claim 1, wherein the fluid level status message includes an indication of an amount of the monitored fluid to add to a reservoir for the monitored fluid on the machine when the fluid level status of the monitored fluid indicates that level of the monitored fluid is below a predetermined refill level.

3. The fluid level monitoring system of claim 1, wherein the fluid level status message includes an indication of an approved type of the monitored fluid to add to a reservoir for the monitored fluid on the machine when the fluid level status of the monitored fluid indicates that level of the monitored fluid is below a predetermined refill level.

4. The fluid level monitoring system of claim 1, wherein each control panel input device has three corresponding indicators, and wherein one indicator is illuminated when the corresponding monitored fluid has a fluid level status indicating that the level of the monitored fluid is below a predetermined refill level, two indicators are illuminated when the corresponding monitored fluid has a fluid level status indicating that the level of the monitored fluid is above the predetermined refill level and below a predetermined full level, and three indicators are illuminated when the corresponding monitored fluid has a fluid level status indicating that the level of the monitored fluid is above the predetermined full level.

5. The fluid level monitoring system of claim 1, wherein each control panel input device has a corresponding pictograph representing the corresponding monitored fluid, and wherein the fluid level status message includes a textual indication of the monitored fluid corresponding to the actuated control panel input device.

6. The fluid level monitoring system of claim 1, comprising at least one fill port corresponding to one of the monitored fluids, wherein each fill port is in fluid communication with a corresponding reservoir for the monitored fluid on the machine.

7. The fluid level monitoring system of claim 1,

wherein each control panel input device has at least one corresponding indicator, with each indicator receiving signals from the OIS causing the indicators for each control panel input device to provide a visual output corresponding to the fluid level status for the corresponding monitored fluid,

wherein actuation of one of the control panel input devices causes a signal to be transmitted from the control panel to the OIS,

wherein the message display device processor receives a fluid level status message from the OIS after the actuation of the control panel input device, with the fluid level status message corresponding to the monitored fluid corresponding to the actuated control panel input device and to the fluid level status of the monitored fluid, and

wherein the message display device processor causes the display screen to display the fluid level status message in response to receiving the fluid level status message from the OIS.

8. A machine having reservoirs for storing a plurality of fluids used in the operation of the machine, the machine comprising:

an onboard information system (OIS) comprising;

a plurality of fluid level sensors, each sensor being disposed at a reservoir for one of the fluids of the machine,

a memory device configured to store a fluid level status for each of the fluids, and

an OIS processor operatively connected to the memory device and the fluid level sensors, wherein the OIS processor is configured to receive signals from the fluid level sensors, to determine fluid level statuses for the fluids based on the signals received from the corresponding fluid level sensors, and to cause the memory device to store the fluid level statuses;

a control panel mounted on an exterior of the machine, the control panel comprising;

a plurality of input devices, with each input device corresponding to one of the fluids of the machine, and

a plurality of indicators, with each indicator corresponding to one of the input devices, wherein the input devices and indicators are operatively connected to the OIS processor, and wherein OIS processor actuates the indicators to provide a visual display of the fluid level status for each of the fluids; and

a message display device comprising;

a display screen,

a message display device processor operatively connected to the display screen and to the OIS processor, the message display device processor being programmed to cause the display screen to display a fluid level status message for one of the monitored fluids, wherein the monitored fluid for which the fluid level status message is displayed is determined based on the actuation of the corresponding input device of the control panel.

9. The machine of claim 8, wherein the fluid level status message includes an indication of an amount of the fluid to add to the reservoir for the fluid when the fluid level status of the fluid indicates that the level of the fluid is below a predetermined refill level.

10. The machine of claim 8, wherein the fluid level status message includes an indication of an approved type of fluid to add to the reservoir for the fluid when the fluid level status of the fluid indicates that the level of the fluid is below a predetermined refill level.

11. The machine of claim 8, wherein each control panel input device has three corresponding indicators, and wherein one indicator is illuminated when the corresponding fluid has a fluid level status indicating that the level of the fluid is below a predetermined refill level, two indicators are illuminated when the corresponding fluid has a fluid level status indicating that the level of the fluid is above the predetermined refill level and below a predetermined full level, and three indicators are illuminated when the corresponding fluid has a fluid level status indicating that the level of the fluid is above the predetermined full level.

12. The machine of claim 8, wherein each control panel input device has a corresponding pictograph representing the corresponding fluid, and wherein the fluid level status message includes a textual indication of the fluid corresponding to the actuated control panel input device.

13. The machine of claim 8, wherein at least one of the fluid level sensors comprises a continuous fluid level sensor.

14. The machine of claim 8, wherein the fluid level sensors comprise a fluid level full sensor and a fluid level add sensor disposed at the reservoir for one of the fluids, and wherein the OIS processor causes the memory device to store a fluid level status indicating that the reservoir for the fluid is full where the signal from the fluid level add sensor indicates that the fluid level is above a predetermined refill level and the signal from the fluid level full sensor indicates that the fluid level is above a predetermined full level, causes the memory device to store a fluid level status indicating that the reservoir for the fluid is not full and not at a refill level where the signal from the fluid level add sensor indicates that the fluid level is above the predetermined refill level and the signal from the fluid level full sensor indicates that the fluid level is below the predetermined full level, and causes the memory device to store a fluid level status indicating that the reservoir for the fluid needs to be refilled where the signal from the fluid level add sensor indicates that the fluid level is below the predetermined refill level.

15. The machine of claim 8, wherein the fluid level sensors comprise first and second fluid level add sensors and a fluid level full sensor disposed at the reservoir for one of the fluids, and the machine comprises an engine status sensor operatively coupled to the OIS processor and providing a signal indicative of an operational status of an engine of the machine, wherein the OIS processor causes the memory device to store a fluid level status indicating that the reservoir for the fluid is not at a refill level where the signal from the engine status sensor indicates that the engine is running and the signal from the first fluid level add sensor indicates that the fluid level is above a first predetermined refill level, causes the memory device to store a fluid level status indicating that the reservoir for the fluid needs to be refilled where the signal from the engine status sensor indicates that the engine is running and the signal from the fluid level add sensor indicates that the fluid level is below the first predetermined refill level, causes the memory device to store a fluid level status indicating that the reservoir for the fluid is full where the signal from the fluid level full sensor indicates that the fluid level is above a predetermined full level, causes the memory device to store a fluid level status indicating that the reservoir for the fluid is not full and not at the refill level where the signal from the engine status sensor indicates that the engine is not running and the signal from the second fluid level add sensor indicates that the fluid level is above a second predetermined refill level , and causes the memory device to store a fluid level status indicating that the reservoir for the fluid needs to be refilled where the signal from the engine status sensor indicates that the engine is not running and the signal from the second fluid level add sensor indicates that the fluid level is below the second predetermined refill level.

16. The machine of claim 8,

wherein the indicators for the control panel input devices receive signals from the OIS processor causing the indicators to provide visual outputs corresponding to the fluid level statuses for the corresponding fluids stored at the memory device,

wherein actuation of a control panel input device causes a signal to be transmitted from the control panel to the OIS processor,

wherein the OIS processor transmits a fluid level status message to the message display device processor in response to receiving the signal from the actuated control panel input device, the fluid level status message corresponding to the fluid corresponding to the actuated control panel input device and the fluid level status of the fluid stored at the memory device, and

wherein the message display device processor causes the display screen to display the fluid level status message in response to receiving the fluid level status message from the OIS processor.

17. A method for providing a fluid monitoring display at a fluid level monitoring system of a machine, comprising:

determining a fluid level status for each of a plurality of fluids used in the operation of the machine, wherein each fluid is contained within a corresponding reservoir of the machine;

for each fluid, actuating at least one indicator of the fluid level monitoring system to provide a visual display corresponding to the fluid level status of the fluid;

detecting actuation of an input device of the fluid level monitoring system corresponding to one of the fluids; and

causing a fluid level status message for the fluid to be displayed at a display screen of the fluid level monitoring system in response to the actuation of the input device corresponding to the fluid, wherein the fluid level status message corresponds to the fluid level status of the fluid.

18. The method of claim 17, wherein the fluid level status message includes an indication of an amount of the fluid to add to the corresponding reservoir for the fluid when the fluid level status indicates that the level of the fluid is below a predetermined refill level.

19. The method of claim 17, wherein the fluid level status message includes an indication of an approved type of fluid to add to the corresponding reservoir for the fluid when the fluid level status indicates that the level of the fluid is below a predetermined refill level.

20. The method of claim 17, wherein the fluid level monitoring system has three indicators corresponding to each fluid, and wherein the step of illuminating at least one indicator for each fluid comprises:

illuminating one indicator for a fluid when the corresponding fluid level status indicates that the level of the fluid is below a predetermined refill level;

illuminating two indicators for a fluid when the corresponding fluid level status indicates that the level of the fluid is above the predetermined refill level and below a predetermined full level; and

illuminating three indicators when the corresponding fluid level status indicates that the level of the fluid is above the predetermined full level.