Fluid treatment apparatus with input and output fluid sensing

• US 7,104,115 B2
• Filed: 05/07/2004
• Issued: 09/12/2006
• Est. Priority Date: 05/07/2004
• Status: Active Grant

• Current Assignee: BL Technologies Inc. (Ashland Global Holdings, Inc.)
• Original Assignee: Sensicore, Inc. (Veolia Environnement SA)
• Inventors: Martin, Glenn, Man, Piu Francis, Kahn, Malcolm R.
• Primary Examiner(s): Williams, Hezron
• Assistant Examiner(s): FRANK, RODNEY T
• Application Number:
  US10/840,649
• Publication Number:
  US 20050247113A1
• Time in Patent Office: 858 Days
• Field of Search: 73/530.1, 73/541.2
• US Class Current: 73/53.01
• CPC Class Codes: G01N 33/0006 Calibrating gas analysers
• CPC Class Codes: G01N 33/18 Water

Abstract

Various sensor unit configurations are disclosed within the context of a fluid quality monitoring system. The distribution of sensor units can be accomplished using existing product distribution channels to sell, distribute and install sensor units so that a fluid distribution monitoring system can be established at relatively low cost, on a wider basis, and by locating sensor units at the most desirable location from problem detection standpoint, the location of the end user.

Claims

1. A system for monitoring potable water, comprising:

a fluid treatment device configured for treating potable water;

a first sensor configured to be exposed to pre-treatment potable water that enters the fluid treatment device, the first sensor comprising a plurality of sensing elements that are disposed on a substrate, said first sensor being configured to measure multiple different chemical species; and

a second sensor configured to be exposed to post-treatment potable water.

2. The system of claim 1, wherein the fluid treatment device comprises at least one of a filter housing, a filter, a water-softening device, a distillation device, and a reverse-osmosis filtration device.

3. The system of claim 1, wherein the fluid treatment device comprises a filter housing for holding a filter, the first sensor being configured to be exposed to pre-treatment potable water and the second sensor being configured to be exposed post-treatment potable water.

4. The system of claim 1, wherein the second sensor comprises a plurality of sensing elements.

5. The system of claim 1, wherein the first sensor comprises at least one of an ion-selective sensing element, an amperometric sensing element, a potentiometric sensing element, a conductivity sensing element, a temperature sensing element, an oxidation-reduction potential sensing element, a chlorine sensing element, an oxygen sensing element, an immunosensor, a DNA probe and an optical sensor.

6. The system of claim 5, wherein the second sensor comprises at least one of an ion-selective sensing element, an amperometric sensing element, a potentiometric sensing element, a conductivity sensing element, a temperature sensing element, an oxidation-reduction potential sensing element, a chlorine sensing element, an oxygen sensing element, an immunosensor, a DNA probe and an optical sensor.

7. The system of claim 1, further comprising a processing unit coupled to the first and second sensors, the processing unit being configured to compare measurement data generated by the first and second sensors.

8. The system of claim 7, further comprising a communication unit coupled to the processing unit, the communication unit being configured to communicate measurement results generated by the processing unit to a remote communication device.

9. The system of claim 7, wherein the processing unit comprises a first processing unit and a second processing unit, wherein the first processing unit is arranged with and coupled to the first sensor, and wherein the second processing unit is arranged with and coupled to the second sensor.

10. The system of claim 3, wherein the first and second sensors are attached to the filter housing.

11. The system of claim 3, further comprising a filter that filters the potable water.

12. The system of claims 11, wherein the first and second sensors are attached to the filter.

13. The system of claim 11, wherein the first and second sensors are embedded within the filter.

14. The system of claim 7, wherein the processing unit is configured to generate an identifier to indicate a replacement condition for a filter to be placed in the filter housing based upon the comparison of the measurement data from the first and second sensors.

15. The system of claim 14, further comprising an indicator that indicates the replacement condition for the filter.

16. The system of claim 14, further comprising a communication unit that communicates the replacement condition to a remote communication device.

17. The system of claim 7, further comprising a third sensor configured to be exposed to the pre-treatment potable water,

wherein the third sensor is coupled to the processing unit, and

wherein the processing unit is configured to

operate in conjunction with the first sensor to monitor the pre-treatment potable water,

generate a variable based on said monitoring,

generate a preliminary identifier if the variable is indicative of a detection condition, and

operate in conjunction with the third sensor to determine whether the detection condition has occurred based on new data.

18. The system of claim 17, further comprising a communication unit configured to report the detection condition to a remote communication device if the processing unit confirms that the detection condition has occurred.

19. The system of claim 7, further comprising a third sensor configured to be exposed to the pre-treatment potable water,

wherein the third sensor is coupled to the processing unit, and

wherein the processing unit is configured to generate a sensor alert identifier if the third sensor provides a measurement reading that differs by a predetermined amount from a contemporaneous measurement reading of a same type provided by the first sensor.

20. The system of claim 19, wherein the sensor alert identifier is indicative that the first sensor may be faulty.

21. The system of claim 1, wherein at least one of the first and second sensors is recalibrated by another sensor sensing substantially the same fluid conditions of the potable water.

22. The system of claim 7, wherein the processing unit is configured to provide raw data generated by first and second sensors to the communication unit for communicating the raw data to a remote communication device.

23. The system of claim 8, wherein the processing unit is configured to provide processed data, locally processed by the processing unit, to the communication unit for communicating the processed data to the remote communication device.

24. The system of claim 8, wherein the processing unit is configured to receive an instruction from the remote communication device via the communication unit instructing the processing unit to determine in conjunction with the second sensor whether the detection condition occurred.

25. The system of claim 1, wherein the fluid treatment device comprises a filter,

wherein the first sensor is attached to the filter, the first sensor being configured to be exposed to pre-treatment potable water, and

wherein the second sensor is attached to the filter, the second sensor being configured to be exposed to post-treatment potable water.

26. The system of claim 25, wherein the second sensor comprises a plurality of sensing elements.

27. The system of claim 25, wherein the first sensor comprises an at least one of an ion-selective sensing element, an amperometric sensing element, a potentiometric sensing element, a conductivity sensing element, a temperature sensing element, an oxidation-reduction potential sensing element, a chlorine sensing element, an oxygen sensing element, an immunosensor, a DNA probe and an optical sensor.

28. The system of claim 27, wherein the second sensor comprises an at least one of an ion-selective sensing element, an amperometric sensing element, a potentiometric sensing element, a conductivity sensing element, a temperature sensing element, an oxidation-reduction potential sensing element, a chlorine sensing element, an oxygen sensing element, an immunosensor, a DNA probe and an optical sensor.

29. The system of claim 25, further comprising a processing unit attached to the filter, the processing unit being configured to compare measurement data generated by the first and second sensors.

30. The system of claim 25, further comprising an interface attached to the filter that allows the first and second sensors to communicate with a processing unit located outside the filter.

31. The system of claim 25, further comprising:

a first processing unit arranged with and coupled to the first sensor; and

a second processing unit arranged with and coupled to the second sensor, the first and second processing units being configured to compare measurement data generated by the first and second sensors.

32. The system of claim 25, wherein the first and second sensors are embedded within the filter.

33. The system of claim 29, wherein the processing unit is configured to generate an identifier to indicate a replacement condition for the filter based upon the comparison of the measurement data from the first and second sensors.

34. The system of claim 31, wherein the first and second processing units are configured to generate an identifier to indicate a replacement condition for the filter based upon the comparison of the measurement data from the first and second sensors.

35. The system of claim 25, further comprising a third sensor attached to the filter.

36. The system of claim 35, wherein the third sensor comprises a plurality of sensing elements configured to be exposed to pre-treatment potable water.

37. The system of claim 29, further comprising a third sensor attached to the filter and having a plurality of sensors configured to be exposed to pre-treatment potable water, wherein the third sensor is coupled to the processing unit,

wherein the processing unit is configured to

operate in conjunction with the first sensor to monitor the pre-treatment potable water,

generate a variable based on said monitoring,

generate a preliminary identifier if the variable is indicative of a detection condition, and

operate in conjunction with the third sensor to determine whether the detection condition has occurred based on new data.

38. The system of claim 37, wherein the processing unit is configured to communicate with a communication unit and to instruct the communication unit to report the detection condition to another communication unit if the processing unit confirms that the detection condition has occurred.

39. The system of claim 29, further comprising a third sensor attached to the filter and having a plurality of sensing elements configured to be exposed to pre-treatment potable water, wherein the third sensor is coupled to the processing unit, and

wherein the processing unit is configured to generate a sensor alert identifier to be communicated to an indicator if the third sensor provides a measurement reading that differs by a predetermined amount from a contemporaneous measurement reading of a same type provided by the first sensor.

40. The system of claim 39, wherein the sensor alert identifier is indicative that the first sensor may be faulty.

41. The system of claim 29, wherein the processing unit is configured to provide raw data generated by first and second sensors to the communication unit for communicating the raw data to the remote communication device.

42. The system of claim 29, wherein the processing unit is configured to provide processed data, locally processed by the processing unit, to the communication unit for communicating the processed data to a remote communication device.

43. The system of claim 29, wherein the processing unit is configured to receive an instruction from a remote communication device via the interface instructing the processing unit to determine in conjunction with the second sensor whether the detection condition occurred.

45. The system of claim 1, wherein the second sensor comprises multiple sensing elements that are disposed on a substrate, said second sensor being configured to measure multiple different chemical species.

53. The system of claim 1, wherein the fluid treatment device, the first sensor and the second sensor are configured as a unit.

44. A method for monitoring potable water, comprising:

sensing pre-treatment potable water that enters a fluid treatment device with a first sensor configured to be exposed to the pre-treatment potable water, the first sensor comprising a plurality of sensing elements that are disposed on a substrate, said first sensor being configured to measure multiple different chemical species; and

sensing post-treatment potable water treated by the fluid treatment device with a second sensor configured to be exposed to the post-treatment potable water.

46. The method of claim 44, wherein the second sensor comprises multiple sensing elements that are disposed on a substrate, said second sensor being configured to measure multiple different chemical species.

47. The method of claim 44, further comprising:

sensing the pre-treatment potable water with a third sensor configured to be exposed to the pre-treatment potable water; and

processing measurement data from said first, second and third sensors with a processing unit,

wherein the processing unit is configured to

generate a variable based on measurement data from the first sensor,

generate a preliminary identifier if the variable is indicative of a detection condition, and

determine whether the detection condition has occurred based on comparing measurement data from the third sensor with measurement data from the first sensor.

48. The method of claim 44, further comprising:

sensing the pre-treatment potable water with a third sensor configured to be exposed to the pre-treatment potable water; and

processing measurement data from said first, second and third sensors with a processing unit,

wherein the processing unit is configured to generate an alert identifier if the third sensor provides a measurement reading that differs by a predetermined amount from a contemporaneous measurement reading of a same type provided by the first sensor.

49. The method of claim 47, wherein the third sensor comprises multiple sensing elements that are disposed on a substrate, said third sensor being configured to measure multiple different chemical species.

50. The method of claim 48, wherein the third sensor comprises multiple sensing elements that are disposed on a substrate, said third sensor being configured to measure multiple different chemical species.

51. The method of claim 44, further comprising, further comprising:

processing measurement data from said first and second sensors with a processing unit coupled to the first and second sensors; and

communicating, via a communication device coupled to the processing unit, measurement results generated by the processing unit to a remote communication device.

52. The method of claim 44, further comprising recalibrating at least one of the first and second sensors by another sensor sensing substantially the same fluid conditions of the potable water.

54. The method of claim 44, wherein the fluid treatment device, the first sensor and the second sensor are configured as a unit.

55. The method of claim 44, comprising:

filtering the potable water with a filter arranged with the fluid treatment device; and

generating an identifier to indicate a replacement condition for the filter based upon a comparison of measurement data from the first and second sensors.