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US6471853B1
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US
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Prognostic health monitoring of fluidic systems using MEMS technology
Assignee: PTI Technologies Inc
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Filing: 2000-11-22
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Granted: 2002-10-29
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Expires: 2020-11-22
Abstract
Abstract The present invention is directed to a filter module that may incorporate sensors to measure various characteristics of fluid flow and filtration. The sensors may be MEMS and may measure the temperature, flow rate, pressure, etc. of the fluid. One or more MEMS sensors may be included in a sensor package which, in turn, may be included in a sensor component. The latter, which may also include a processor, conductor pins, etc. for data communication, may be coupled to a sensor port in such a way as to allow contact between the sensor(s) and the fluid. Sensor measurements may be used to determine the occurrence of harmful events, such as cavitation or particle breakthrough, or to predict the remaining service life of a filter element.
Inventors
- 👤 Daniel Moscaritolo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:51
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D35/143; B01D37/00; B01D37/04; B01D37/046; A; A61; A61M; A61M5/00; A61M5/14; A61M5/165; A61M2005/1652; A61M2205/00; A61M2205/02; A61M2205/0244; A61M2205/33; A61M2205/3327; A61M2205/3331; B01D2201/00; B01D2201/54
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
184 words
A filter module for filtering a fluid, said filter module comprising: a filter element receiving said fluid in an unfiltered state at an inlet side and producing said fluid in a filtered state at an outlet side; a filter manifold having an inlet fluid flow cavity and an outlet fluid flow cavity, said inlet fluid flow cavity configured to transmit said fluid to said inlet side and said outlet fluid flow cavity configured to transmit said fluid from said outlet side; a sensor port having a first end exposed to at least one of said inlet fluid flow cavity and said outlet fluid flow cavity; and a sensor component coupled to said sensor port, said sensor component having a micro-electro-mechanical systems (MEMS) sensor package disposed proximate said first end such that said MEMS sensor package is in contact with said fluid, wherein said MEMS sensor package includes a MEMS sensor and is configured to measure at least one of a fluid flow characteristic and a filtration characteristic and to communicate said measurement to at least one of a processor and a data processing device.
Claim 2
Dependent Claim
184 words
A filter module for filtering a fluid, said filter module comprising: a filter element receiving said fluid in an unfiltered state at an inlet side and producing said fluid in a filtered state at an outlet side; a filter manifold having an inlet fluid flow cavity and an outlet fluid flow cavity, said inlet fluid flow cavity configured to transmit said fluid to said inlet side and said outlet fluid flow cavity configured to transmit said fluid from said outlet side; a sensor port having a first end exposed to at least one of said inlet fluid flow cavity and said outlet fluid flow cavity; and a sensor component coupled to said sensor port, said sensor component having a micro-electro-mechanical systems (MEMS) sensor package disposed proximate said first end such that said MEMS sensor package is in contact with said fluid, wherein said MEMS sensor package includes a MEMS sensor and is configured to measure at least one of a fluid flow characteristic and a filtration characteristic and to communicate said measurement to at least one of a processor and a data processing device.
Claim 3
Dependent Claim
19 words
The filter module according to claim 1 , wherein said sensor component is removably coupled to said sensor port.
Claim 4
Dependent Claim
15 words
The filter module according to claim 1 , said sensor package including a temperature sensor.
Claim 5
Dependent Claim
16 words
The filter module according to claim 1 , said sensor package including a flow rate sensor.
Claim 6
Dependent Claim
15 words
The filter module according to claim 1 , said sensor package including a pressure sensor.
Claim 7
Dependent Claim
18 words
The filter module according to claim 5 , wherein said pressure sensor is configured to measure differential pressure.
Claim 8
Dependent Claim
83 words
The filter module according to claim 1 , wherein said sensor port has a first end exposed to said inlet fluid flow cavity and further including: a second sensor port having a first end exposed to said outlet fluid flow cavity; and a second sensor component coupled to said second sensor port, said second sensor component having a second sensor package disposed proximate said first end of said second sensor port such that said second sensor package is in contact with said fluid.
Claim 9
Dependent Claim
18 words
The filter module according to claim 7 , wherein said second sensor package includes a second MEMS sensor.
Claim 10
Dependent Claim
47 words
The filter module according to claim 7 , wherein said second sensor package is configured to measure at least one of a fluid flow characteristic and a filtration characteristic and to communicate said measurement to said at least one of a processor and a data processing device.
Claim 11
Dependent Claim
34 words
The filter module according to claim 9 , wherein said second sensor package is configured to communicate said measurement to said at least one of a processor and a data processing device in real-time.
Claim 12
Dependent Claim
25 words
The filter module according to claim 1 , wherein at least one of said sensor port and said sensor component further include an auto-configuration feature.
Claim 13
Dependent Claim
29 words
The filter module according to claim 11 , wherein said sensor package is configured to communicate said measurement only if a configuration signal is received from said auto-configuration feature.
Claim 14
Dependent Claim
15 words
The filter module according to claim 1 , said sensor component further including a processor.
Claim 15
Dependent Claim
29 words
The filter module according to claim 13 , wherein said sensor package is configured to take a measurement upon receiving a signal from said processor of said sensor component.
Claim 16
Dependent Claim
47 words
The filter module according to claim 14 , at least one of said sensor component and said sensor port including an auto-configuration feature and wherein said processor of said sensor component is configured to produce said signal only after receiving a configuration signal from said auto-configuration feature.
Claim 17
Dependent Claim
37 words
The filter module according to claim 1 , wherein said sensor package is flush with said fluid as it flows through the at least one of said inlet fluid flow cavity and said outlet fluid flow cavity.
Claim 18
Dependent Claim
23 words
The filter module according to claim 1 , said sensor component further including conductive pins configured to mate with a data processing device.
Claim 19
Dependent Claim
20 words
The filter module according to claim 1 , wherein said sensor package is configured to communicate said measurement in real-time.
Claim 20
Dependent Claim
181 words
A filter module for filtering a fluid, said filter module comprising: a filter element receiving said fluid in an unfiltered state at an inlet side and producing said fluid in a filtered state at an outlet side, said filter element having a first end, an interior containing said fluid in a filtered state, an exterior containing fluid in an unfiltered state and a membrane separating said interior from said exterior; a filter body bounding said exterior of said filter element; an end cap coupled to said first end of said filter element; a sensor port having a first end exposed to said interior of said filter element and a second end exposed to said exterior of said filter element; and a sensor component coupled to said sensor port, said sensor component having a micro-electro-mechanical systems MEMS sensor package, wherein said MEMS sensor package includes a MEMS sensor and is configured to measure at least one of a fluid flow characteristic and a filtration characteristic and to communicate said measurement to at least one of a processor and a data processing device.
Claim 21
Dependent Claim
181 words
A filter module for filtering a fluid, said filter module comprising: a filter element receiving said fluid in an unfiltered state at an inlet side and producing said fluid in a filtered state at an outlet side, said filter element having a first end, an interior containing said fluid in a filtered state, an exterior containing fluid in an unfiltered state and a membrane separating said interior from said exterior; a filter body bounding said exterior of said filter element; an end cap coupled to said first end of said filter element; a sensor port having a first end exposed to said interior of said filter element and a second end exposed to said exterior of said filter element; and a sensor component coupled to said sensor port, said sensor component having a micro-electro-mechanical systems MEMS sensor package, wherein said MEMS sensor package includes a MEMS sensor and is configured to measure at least one of a fluid flow characteristic and a filtration characteristic and to communicate said measurement to at least one of a processor and a data processing device.
Claim 22
Dependent Claim
15 words
The filter module of claim 19 , said sensor package including a differential pressure sensor.
Claim 23
Dependent Claim
142 words
A filter module for filtering a fluid, said filter module comprising: a filter element receiving said fluid in an unfiltered state at an inlet side and producing said fluid in a filtered state at an outlet side; a first sensor component having a first micro-electro-mechanical systems (MEMS) sensor disposed proximate said inlet side of said filter element such that said first MEMS sensor is in contact with said fluid; and a second sensor component having a second MEMS sensor disposed proximate said outlet side of said filter element such that said second MEMS sensor is in contact with said fluid, wherein each of said first and second MEMS sensors is configured to measure at least one of a fluid flow characteristic and a filtration characteristic and to communicate said measurement to at least one of a processor and a data processing device.
Claim 24
Dependent Claim
142 words
A filter module for filtering a fluid, said filter module comprising: a filter element receiving said fluid in an unfiltered state at an inlet side and producing said fluid in a filtered state at an outlet side; a first sensor component having a first micro-electro-mechanical systems (MEMS) sensor disposed proximate said inlet side of said filter element such that said first MEMS sensor is in contact with said fluid; and a second sensor component having a second MEMS sensor disposed proximate said outlet side of said filter element such that said second MEMS sensor is in contact with said fluid, wherein each of said first and second MEMS sensors is configured to measure at least one of a fluid flow characteristic and a filtration characteristic and to communicate said measurement to at least one of a processor and a data processing device.
Claim 25
Dependent Claim
25 words
The filter module according to claim 21 , wherein each of said first and second MEMS sensors is configured to communicate said measurement in real-time.
Claim 26
Dependent Claim
113 words
The filter module according to claim 21 , further including a filter manifold having an inlet fluid flow cavity and an outlet fluid flow cavity, said inlet fluid flow cavity configured to transmit said fluid to said inlet side and said outlet fluid flow cavity configured to transmit said fluid from said outlet side, wherein each said MEMS sensor has a front face that is in contact with said fluid, and wherein the front face of said first MEMS sensor is flush with an interior surface of said inlet fluid flow cavity and the front face of said second MEMS sensor is flush with an interior surface of said outlet fluid flow cavity.
Claim 27
Dependent Claim
65 words
The filter module according to claim 23 , further including: a first sensor port having a first end exposed to said inlet fluid flow cavity; and a second sensor port having a first end exposed to said outlet fluid flow cavity, wherein said first sensor component is coupled to said first sensor port and said second sensor component is coupled to said second sensor port.
Claim 28
Dependent Claim
50 words
The filter module according to claim 24 , wherein at least one of said first sensor port and said first sensor component further includes a first auto-configuration package, and at least one of said second sensor port, second sensor component, and second MEMS sensor further includes a second auto-configuration feature.
Claim 29
Dependent Claim
55 words
The filter module according to claim 25 , wherein said first MEMS sensor is configured to communicate its measurement only if a configuration signal is received from said first auto-configuration feature, and wherein said second MEMS sensor is configured to communicate its measurement only if a configuration signal is received from said second auto-configuration feature.
Claim 30
Dependent Claim
22 words
The filter module according to claim 21 , wherein each of said first and second MEMS sensors is a MEMS pressure sensor.
Claim 31
Dependent Claim
58 words
The filter module according to claim 27 , each said MEMS pressure sensor comprising: a pressure reference chamber; a pressure sensor diaphragm, said diaphragm separating said fluid from said pressure reference chamber; and a conductive element coupled to said diaphragm, said conductive element having a variable resistance that depends on an amount of deflection of said conductive element.
Claim 32
Dependent Claim
50 words
The filter module according to claim 28 , wherein said conductive element is configured to deflect when a pressure difference exists between said fluid and said pressure reference chamber thereby allowing said pressure difference to be measured as a function of the change in said resistance of said conductive element.
Claim 33
Dependent Claim
35 words
The filter module according to claim 28 , each said MEMS pressure sensor further including a conductive lead that is configured to electrically couple said conductive element to a bridge circuit having a reference resistance.
Claim 34
Dependent Claim
16 words
The filter module according to claim 28 , wherein said conductive element is a piezoelectric element.
Claim 35
Dependent Claim
20 words
The filter module according to claim 28 , wherein said conductive element is affixed to a surface of said diaphragm.
Claim 36
Dependent Claim
17 words
The filter module according to claim 28 , wherein said conductive element is embedded within said diaphragm.
Claim 37
Dependent Claim
20 words
The filter module according to claim 21 , wherein each said MEMS sensor component includes a plurality of MEMS sensors.
Claim 38
Dependent Claim
17 words
The filter module according to claim 21 , wherein each said MEMS sensor component includes redundant sensors.
Claim 39
Dependent Claim
20 words
The filter module according to claim 21 , each of said first and second sensor components further including a processor.
Claim 40
Dependent Claim
56 words
The filter module according to claim 36 , wherein said first MEMS sensor is configured to take a measurement upon receiving a first signal from the processor of said first sensor component, and said second MWMS sensor is configured to take a measurement upon receiving a second signal from the processor of said second sensor component.
Claim 41
Dependent Claim
17 words
The filter module according to claim 37 , wherein each said sensor component includes an auto-configuration feature.
Claim 42
Dependent Claim
22 words
The filter module according to claim 21 , wherein each of said first and second MEMS sensors is a MEMS temperature sensor.
Claim 43
Dependent Claim
54 words
The filter module according to claim 38 , each said MEMS temperature sensor comprising a resistive element having a variable, temperature-dependent resistance, wherein said resistive element is configured to have an electrical current applied thereacross, thereby allowing said fluid's temperature to be measured as a function of the voltage drop across said resistive element.
Claim 44
Dependent Claim
19 words
The filter module according to claim 40 , wherein said resistive element is supported by a temperature sensor diaphragm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-10-28 | 2006-04-29 | 2006-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-10-28 | 2010-04-29 | 2010-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-10-28 | 2014-04-29 | 2014-10-29 | $7700.00 | Window Closed / Lapsed |