Granted Patent B2

US 12,525,113 · App. 18/760,897 · Granted Jan 13, 2026

Inventor: Danny W. Miller (Ackley, IA)

Assignee: Donaldson Company, Inc.

G08B21/18

Abstract

Claims (32)

1 . A filtration sensor system comprising:

a plurality of fluid filtration housings;

a plurality of fluid filter elements associated with the fluid filtration housings;

a plurality of wireless communication tags associated with the fluid filter elements;

a plurality of zone antennas configured to cover different spatial zones; and

a wireless communication reader in wired communication with the plurality of zone antennas, the wireless communication reader configured to wirelessly receive signals from the wireless communication tags via the zone antennas;

wherein the system is configured to store zone association data, the zone association data including unique tag IDs and zones the unique tag IDs have been located in.

2 . The filtration sensor system of claim 1 , wherein the system is configured to store timestamps for zone association data.

3 . The filtration sensor system of claim 1 , wherein at least one of the wireless communication tags is associated with an air intake filtration system, a fuel filtration system, a cabin air filtration system, or a lubricating oil filtration system.

4 . The filtration sensor system of claim 1 , the zone antennas forming components of distinct communication channels, the wireless communication reader further comprising a multiplexer to switch between distinct communication channels.

5 . The filtration sensor system of claim 4 , wherein at least one of the distinct communication channels is associated with a first filtration zone, but spatially overlaps with a second filtration zone.

6 . The filtration sensor system of claim 1 , the zone antennas comprising UHF antennas.

7 . The filtration sensor system of claim 1 , wherein at least one of the zone antennas is different in its effective communication range.

8 . The filtration sensor system of claim 1 , wherein at least one of the zone antennas has a directionality that is different than one or more of the other zone antennas.

9 . The filtration sensor system of claim 8 , wherein the signal strength reflects a distance between the zone antennas and the wireless communication tags.

10 . The filtration sensor system of claim 9 , the system controller configured to identify patterns indicative of a filtration system operational event.

11 . The filtration sensor system of claim 1 , wherein the wireless communication reader calculates a signal strength between the antennas and the wireless communication tags.

12 . The filtration sensor system of claim 1 , further comprising a system controller, the system controller configured to receive electrical signals from the wireless communication reader, the system controller configured to identify patterns in the electrical signals received from the wireless communication reader.

13 . The filtration sensor system of claim 12 , the filtration system operation event including at least one of a fluid filter element removal, a fluid filter element installation, a fluid filter element reinstallation, a fluid filter cleaning event.

14 . The filtration sensor system of claim 13 , the system configured to increment and store a count of detected fluid filter element removal and/or reinstallation events.

15 . The filtration sensor system of claim 12 , the system controller configured to identify patterns in the electrical signals received from the wireless communication reader; wherein detection of a wireless communication tag exiting a zone and then reentering a zone is counted as a fluid filter element removal and/or a fluid filter reinstallation event.

16 . A filtration sensor system comprising:

a plurality of fluid filtration housings;

a plurality of fluid filter elements associated with the fluid filtration housings;

a plurality of wireless communication tags associated with the fluid filter elements;

a plurality of zone antennas configured to cover different spatial zones; and

a wireless communication reader in wired communication with the plurality of zone antennas, the wireless communication reader configured to wirelessly receive signals from the wireless communication tags via the zone antennas;

wherein the system is configured to identify a filter cleaning event by observing a filter element exit and then reenter a zone followed by observing a pressure drop that is less than it was prior to the filter element exiting the zone.

17 . The filtration sensor system of claim 16 , the wireless communication tag comprising a memory storage circuit, wherein the wireless communication tag stores information regarding fluid filter element model and serial number in the memory storage circuit.

18 . The filtration sensor system of claim 17 , wherein the filtration monitoring system is configured to store data including unique tag IDs, the zones the unique tag IDs have been located in, and timestamps regarding the same.

19 . The filtration sensor system of claim 16 , further comprising a wireless communication tag configured to be directly associated with an individual human operator or associated with apparel or other equipment of an individual human operator, the wireless communication tag configured to communicate with at least one of the spatial zone antennas.

20 . The filtration sensor system of claim 16 , further comprising quantifying changes in a signal strength of wireless signals from wireless communication tags.

Assignments (1)

Continuity (4)

References Cited (253)