Monitoring systems and methods for fluid testing

• US 20050251366A1
• Filed: 05/07/2004
• Published: 11/10/2005
• Est. Priority Date: 05/07/2004
• Status: Abandoned Application

• Current Assignee: GE Analytical Instruments, Inc. (General Electric Company)
• Original Assignee: Sensicore, Inc. (Veolia Environnement SA)
• Inventors: Martin, Glenn, Man, Piu Francis, Kahn, Malcolm R.
• Application Number:
  US10/840,628
• Publication Number:
  US 20050251366A1
• Time in Patent Office: Days
• US Class Current: 702/188
• CPC Class Codes: C02F 1/008 Control or steering systems not provided for elsewhere in subclass C02F
• CPC Class Codes: C02F 2209/008 comprising telecommunication features, e.g. modems or antennas
• CPC Class Codes: C02F 2209/02 Temperature
• CPC Class Codes: C02F 2209/04 Oxidation reduction potential [ORP]
• CPC Class Codes: C02F 2209/05 Conductivity or salinity
• CPC Class Codes: C02F 2209/22 O2
• CPC Class Codes: C02F 2209/29 Chlorine compounds
• 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 a fluid, comprising:

monitoring means for monitoring a fluid and generating a variable based on said monitoring, and for generating a preliminary identifier if the variable is indicative of a detection condition;

confirming means for testing the fluid and for determining whether the detection condition has occurred based on new data; and

reporting means for reporting the detection condition to a remote communication device if the confirming means determines that the detection condition has occurred.

2. The system of claim 1, wherein said fluid is water.

3. The system of claim 1, wherein the monitoring means comprises a first sensor, and a processing unit and wherein the confirming means comprises a second sensor and the same or another processing unit.

4. The system of claim 3, wherein the first sensor comprises a plurality of sensing elements.

5. The system of claim 3, wherein the reporting means comprises a communication unit, the communication unit being coupled to the processing unit.

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

7. The system of claim 3, wherein the confirming means is configured to activate the second sensor in response to receiving the preliminary identifier from the monitoring means.

8. The system of claim 3, wherein the first sensor and the second sensor are provided on distinct substrates.

9. The system of claim 3, wherein the first sensor and the second sensor are provided on a same substrate.

10. The system of claim 3, 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.

11. The system of claim 3, wherein the first sensor comprises a sensing element of a first type and the second sensor comprises a sensing element of a second type, the first type being different from the second type.

12. The system of claim 3, wherein the first sensor comprises a sensing element of a first type and the second sensor comprises a sensing element of a second type, the first type being the same as the second type.

13. The system of claim 3, wherein the confirming means comprises exposing means for exposing the second sensor to the fluid after the confirming means receives the preliminary identifier.

14. The system of claim 1, wherein

the monitoring means and the confirming means comprise a common sensor,

the confirming means comprises a recalibrating means for recalibrating the common sensor in response to the preliminary identifier, and

the confirming means determines whether the detection even has occurred using the recalibrated common sensor.

15. The system of claim 1, wherein the monitoring means and the confirming means share a common processing unit.

16. The system of claim 1, wherein the monitoring means makes a measurement of the fluid and calculates the variable based on data from the measurement.

17. The system of claim 1, wherein the confirming means tests the fluid and determines whether the detection condition has occurred in response to receiving the preliminary identifier from the monitoring means.

18. The system of claim 1, wherein the monitoring means and the confirming means together comprise at least three sensors and wherein the confirming means determines whether the detection condition has occurred based on a majority voting approach using data from three or more of said at least three sensors.

19. The system of claim 1, wherein the monitoring means comprises a processing unit and two sensors that contemporaneously monitor the fluid, and wherein the monitoring means generates a sensor alert identifier if one of said two sensors provides a measurement reading that differs by more than a predetermined amount from a contemporaneous measurement reading of a same type provided by another of said two sensors.

20. The system of claim 19, wherein the monitoring means comprises a further sensor for monitoring the fluid that is activated in response to the sensor alert identifier.

21. The system of claim 20, wherein the monitoring means determines that one of said two sensors is faulty based on measurement data from said further sensor, and wherein the monitoring means disables the faulty sensor.

22. The system of claim 3, wherein at least one of the first and second sensors is recalibrated by another sensor sensing substantially the same fluid conditions.

23. The system of claim 1, further comprising a memory that stores data representative of characteristic fingerprints of at least one of classes of substances and particular substances,

wherein the monitoring means comprises a first sensor and wherein the confirming means comprises a second sensor,

wherein at least one of the first and second sensors comprises a plurality of sensing elements capable of providing data for generating a measurement fingerprint of the fluid, and

wherein at least one of the monitoring means and the confirming means is configured to

generate a measurement fingerprint associated with the fluid based on measurement data from the plurality of sensing elements, and

compare the measurement fingerprint to the data representative of the characteristic fingerprints to determine whether the measurement fingerprint is indicative of at least one of a given class of substances and a particular substance as being present in the fluid.

24. The system of claim 23, wherein the monitoring means, the confirming means, the reporting means and the memory that stores data representative of characteristic fingerprints are located at a same location.

25. The system of claim 23, wherein the monitoring means, the confirming means, the reporting means and the memory that stores data representative of characteristic fingerprints are located at a common location and are configured as a unit.

26. The system of claim 23, wherein the memory that stores data representative of characteristic fingerprints and the monitoring means are located in different locations, and wherein the memory that stores data representative of characteristic fingerprints is accessed by the monitoring means via the reporting means.

27. The system of claim 1, further comprising a memory that stores data representative of characteristic profiles of at least one of classes of substances and particular substances,

wherein the monitoring means comprises a first sensor and wherein the confirming means comprises a second sensor,

wherein at least one of the first and second sensors comprises a plurality of sensing elements capable of providing data for generating a measurement profile of the fluid, and

wherein at least one of the monitoring means and the confirming means is configured to

generate a measurement profile associated with the fluid based on measurement data from the plurality of sensing elements, and

compare the measurement profile to the data representative of the characteristic fingerprints to determine whether the measurement profile is indicative of at least one of a given class of substances and a particular substance as being present in the fluid.

28. The system of claim 27, wherein the monitoring means, the confirming means, the reporting means and the memory that stores data representative of characteristic profiles are located at a same location.

29. The system of claim 27, wherein the monitoring means, the confirming means, the reporting means and the memory that stores data representative of characteristic profiles are located at a common location and are configured as a unit.

30. The system of claim 27, wherein the memory that stores data representative of characteristic profiles and the monitoring means are located in different locations, and wherein the memory that stores data representative of characteristic profiles is accessed by the monitoring means via the reporting means.

31. The system of claim 3, wherein the first and second sensors are located in a same location.

32. The system of claim 3, wherein the first and second sensors are located in different locations.

33. The system of claim 1, wherein the monitoring means monitors the fluid continuously.

34. The system of claim 1, wherein the monitoring means monitors the fluid intermittently.

35. The system of claim 1, wherein the monitoring means monitors the fluid upon inquiry.

36. A system for monitoring a fluid, comprising:

a first sensor configured to be exposed to a fluid;

a second sensor configured to be exposed to the fluid;

a processing unit coupled to the first sensor and the second sensor, the processing unit being configured to

operate in conjunction with the first sensor to monitor the fluid,

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 second sensor to determine whether the detection condition has occurred based on new data; and

a communication unit configured to report the detection condition to a remote communication device if at least one processing unit confirms that the detection condition has occurred.

37. The system of claim 36, wherein said fluid is water.

38. The system of claim 36, wherein:

the processing unit comprises a first processing unit and a second processing unit;

the first processing unit is coupled to the first sensor;

the second processing unit is coupled to the second sensor;

the first processing unit is configured to

operate in conjunction with the first sensor to monitor the fluid,

generate the variable, and

generate the preliminary identifier; and

the second processing unit is configured to

receive the preliminary identifier from the first processing unit, and

operate in conjunction with the second sensor unit to determine whether the detection condition has occurred.

39. The system of claim 36, wherein the first sensor comprises a plurality of sensing elements.

40. The system of claim 39, wherein the second sensor comprises a plurality of sensing elements.

41. The system of claim 36, wherein at least one processing unit is configured to activate the second sensor in response to the preliminary identifier.

42. The system of claim 36, wherein the first sensor and the second sensor are provided on distinct substrates.

43. The system of claim 36, wherein the first sensor and the second sensor are provided on a same substrate.

44. The system of claim 36, 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.

45. The system of claim 36, wherein the first sensor comprises a sensing element of a first type and the second sensor comprises a sensing element of a second type, the first type being different from the second type.

46. The system of claim 38, wherein the first sensor comprises a sensing element of a first type and the second sensor comprises a sensing element of a second type, the first type being the same as the second type.

47. The system of claim 36, further comprising an exposing mechanism configured to expose the second sensor to the fluid in response to the preliminary identifier.

48. The system of claim 36, wherein the processing unit calculates the variable based on data from the measurement.

49. The system of claim 36, wherein the processing unit determines whether the detection condition has occurred in response to the preliminary identifier.

50. The system of claim 36, further comprising a third sensor configured to be exposed to the fluid and coupled to the processing unit, wherein the processing unit determines whether the detection condition has occurred based on a majority voting approach using data from the three sensors.

51. The system of claim 36, wherein the first and second sensors contemporaneously monitor the fluid, and wherein the processing unit generates a sensor alert identifier if the second sensor provides a measurement reading that differs by more than a predetermined amount from a contemporaneous measurement reading of a same type provided by the first sensor.

52. The system of claim 51, further comprising a third sensor configured to be exposed to the fluid and coupled to the processing unit, wherein the third sensor is activated in response to the sensor alert identifier.

53. The system of claim 52, wherein the processing unit determines that one of first and second sensors is faulty based on measurement data from the third sensor, and wherein the processing unit disables the faulty sensor.

54. The system of claim 36, wherein at least one of the first and second sensors is recalibrated by another sensor sensing substantially the same fluid conditions.

55. The system of claim 36, further comprising a memory that stores data representative of characteristic fingerprints of at least one of classes of substances and particular substances,

wherein at least one of the first and second sensors comprises a plurality of sensing elements capable of providing data for generating a measurement profile of the fluid, and

wherein the processing unit is configured to

generate a measurement profile associated with the fluid based on measurement data from the plurality of sensing elements, and

compare the measurement profile to the data representative of the characteristic fingerprints to determine whether the measurement profile is indicative of at least one of a given class of substances and a particular substance as being present in the fluid.

56. The system of claim 55, wherein the first sensor, the second sensor, the processing unit and the memory that stores data representative of characteristic fingerprints are located in a same location.

57. The system of claim 55, wherein the first sensor, the second sensor, the processing unit and the memory that stores data representative of characteristic fingerprints are configured as a unit.

58. The system of claim 55, wherein the memory that stores data representative of characteristic fingerprints and the processing unit are located in different locations, and the memory that stores data representative of characteristic fingerprints is accessed by the at least one processing unit via the communication unit.

59. The system of claim 46, wherein the first and second sensors are located in a same location.

60. The system of claim 36, wherein the first and second sensors are located in different locations.

61. The system of claim 36, 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.

62. The system of claim 36, 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.

63. The system of claim 36, 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.

64. The system of claim 36, wherein the processing unit is configured to cause the first sensor to monitor the fluid continuously.

65. The system of claim 36, wherein the processing unit is configured to cause the first sensor to monitor the fluid intermittently.

66. The system of claim 36, wherein the processing unit is configured to cause the first sensor to monitor the fluid upon inquiry.

67. A system for monitoring a fluid, comprising:

a sensor configured to be exposed to a fluid;

a processing unit coupled to the sensor, wherein the processing unit is configured to

operate in conjunction with the sensor to monitor the fluid,

generate a variable based on said monitoring,

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

initiate a recalibration of the sensor in response to the preliminary identifier, and

operate in conjunction with the recalibrated sensor to determine whether the detection condition has occurred based on new data; and

a communication unit configured to report the detection condition to a remote communication device if the processing unit confirms that the detection event has occurred.

68. The system of claim 67, wherein said fluid is water.

69. The system of claim 67, wherein the sensor comprises a plurality of sensing elements.

70. The system of claim 67, wherein the 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.

71. The system of claim 67, wherein the processing unit calculates the variable based on data from the measurement.

72. The system of claim 69, further comprising a memory that stores data representative of characteristic fingerprints of at least one of classes of substances and particular substances,

wherein plurality of sensing elements of the sensor are capable of providing data for generating a measurement profile of the fluid, and

wherein the processing unit is configured to

generate a measurement profile associated with the fluid based on measurement data from the plurality of sensing elements, and

compare the measurement profile to the data representative of the characteristic fingerprints to determine whether the measurement profile is indicative of at least one of a given class of substances and a particular substance as being present in the fluid.

73. The system of claim 72, wherein the sensor, the processing unit and the memory that stores data representative of characteristic fingerprints are located at a same location.

74. The system of claim 72, wherein the sensor, the processing unit and the memory that stores data representative of characteristic fingerprints are configured as a unit.

75. The system of claim 72, wherein the memory that stores data representative of characteristic fingerprints and the processing unit are located in different locations, and wherein the memory that stores data representative of characteristic fingerprints is accessed by the processing unit via the communication unit.

76. The system of claim 67, wherein the processing unit is configured to provide raw data generated by said sensor to the communication unit for communicating the raw data to the remote communication device.

77. The system of claim 67, 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.

78. The system of claim 67, 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 recalibrated sensor whether the detection condition occurred.

79. A method of monitoring a fluid, comprising:

monitoring a fluid with a measuring system;

generating a variable based on said monitoring;

generating a preliminary identifier if the variable is indicative of a detection condition;

testing the fluid with the measurement system and determining whether the detection condition has occurred based on new data; and

reporting the detection condition if said testing confirms that the detection condition has occurred.

80. The method of claim 79, wherein said fluid is water.

81. The method of claim 79, wherein the measuring system comprises a first sensor configured to be exposed to the fluid and a second sensor configured to be exposed to the fluid.

82. The method of claim 81, wherein the first sensor comprises a plurality of sensing elements.

83. The method of claim 82, wherein the second sensor comprises a plurality of sensing elements.

84. The method of claim 79, wherein the testing is done in response to the preliminary identifier.

85. The method of claim 81, 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.

86. The method of claim 81, wherein the first sensor comprises a sensing element of a first type and the second sensor comprises a sensing element of a second type, the first type being different from the second type.

87. The method of claim 81, wherein the first sensor comprises a sensing element of a first type and the second sensor comprises a sensing element of a second type, the first type being the same as the second type.

88. The method of claim 81, comprising exposing the second sensor to the fluid in response the preliminary identifier.

89. The method of claim 81, comprising activating the second sensor to the fluid in response the preliminary identifier.

90. The method of claim 79, wherein the measuring system comprises a sensor configured to be exposed to the fluid for monitoring the fluid,

wherein the method comprises initiating a recalibration of the sensor in response to the preliminary identifier, and

wherein the testing is carried out using the recalibrated sensor to determine whether the detection condition has occurred.

91. The method of claim 79, wherein generating the variable comprises calculating the variable based on data from the monitoring.

92. The method of claim 79, wherein the measuring system comprises at least three sensors and wherein determining whether the detection condition has occurred is based on a majority voting approach using data from three or more of said at least three sensors.

93. The method of claim 79, the monitoring comprises contemporaneously monitoring the fluid using two sensors, the method further comprising generating a sensor alert identifier if one of said two sensors provides a measurement reading that differs by more than a predetermined amount from a contemporaneous measurement reading of a same type provided by another of said two sensors.

94. The method of claim 93, further comprising activating another sensor for monitoring the fluid in response to the sensor alert identifier.

95. The method of claim 94, further comprising:

determining that one of said two sensors is faulty based on measurement data from said additional sensor; and

disabling the faulty sensor.

96. The method of claim 81, further comprising recalibrating at least one of said first and second sensors by an output of another sensor sensing substantially the same fluid conditions.

97. The method of claim 81, wherein at least one of the first and second sensors comprises a plurality of sensing elements, the method further comprising:

generating a measurement profile associated with the fluid using data from the plurality of sensing elements;

accessing a memory comprising data representative of characteristic fingerprints of at least one of classes of substances and particular substances; and

comparing the measurement profile to the data representative of the characteristic fingerprints; and

determining whether the measurement profile is indicative of at least one of a given class of substances and a particular substance as being present in the fluid.

98. The method of claim 79, wherein said monitoring the fluid and said testing the fluid are carried out at a same location.

99. The method of claim 79, wherein said monitoring the fluid and said testing the fluid are carried out different locations.

100. The method of claim 97, wherein:

the memory that stores data representative of characteristic fingerprints and the measuring system are located in different locations;

the measuring system comprises a processing unit and a communication unit; and

the processing unit accesses the memory that stores data representative of characteristic fingerprints is accessed via the communication unit.

101. The method of claim 81, wherein the first and second sensors are located in a same location.

102. The method of claim 81, wherein the first and second sensors are located in different locations.

103. The method of claim 79, further comprising providing raw data generated by the monitoring system to a remote location.

104. The method of claim 79, further comprising providing locally processed data to a remote location.

105. The method of claim 79, further comprising receiving an instruction from a remote location to determine in conjunction with the monitoring system whether the detection condition was occurred.

106. The method of claim 79, wherein said monitoring is continuous.

107. The method of claim 79, wherein said monitoring is intermittent.

108. The method of claim 79, wherein said monitoring occurs upon inquiry.

109. A method of monitoring a fluid, comprising:

exposing a sensor to a fluid;

operating a processing unit coupled to the sensor to

monitor the fluid,

generate a variable based on said monitoring,

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

initiate a recalibration of the sensor in response to the preliminary identifier, and

operate in conjunction with the recalibrated sensor to determine whether the detection condition has occurred based on new data; and

reporting the detection condition to a remote location if the processing unit confirms that the detection event has occurred.

110. The method of claim 109, wherein said fluid is water.

111. The method of claim 109, wherein said monitoring includes measuring at least one of an ion content, a chlorine content, an oxygen content, an electrical conductivity, a temperature, and an oxidation-reduction potential.

112. The method of claim 109, wherein the processing includes calculating the variable based on data from the monitoring.

113. The method of claim 109, further comprising

storing data representative of characteristic fingerprints of at least one of classes of substances and particular substances,

providing data for generating a measurement profile of the fluid, and

generating a measurement profile associated with the fluid based on measurement data, and

comparing the measurement profile to the data representative of the characteristic fingerprints to determine whether the measurement profile is indicative of at least one of a given class of substances and a particular substance as being present in the fluid.

114. The method of claim 113, further comprising providing raw data generated by said sensor to a remote location.

115. The method of claim 109, further comprising providing locally processed data to a remote location.

116. The method of claim 109, further comprising receiving an instruction from a remote location instructing a processing unit to determine in conjunction with a recalibrated sensor whether the detection condition occurred.

117. A recalibration system in a system for monitoring a fluid in a fluid distribution system, comprising:

a first sensor at a first location in a fluid distribution system;

a second sensor at a second location in a fluid distribution system;

a reporting means for reporting measurement from said first and said second sensor to a recalibration circuit,

said recalibration circuit receiving an indication of which of said first and second sensors is to be relied upon, and recalibrating the other of the first and second sensors based on the measurements of the indicated sensor.

118. The recalibration system of claim 117, wherein said fluid is water.

119. The recalibration system of claim 117, wherein at least one of said first and second sensors is replaceable, and a sensor that has been replaced is indicated as the sensor to be relied upon.

120. The recalibration system of claim 117, wherein at least one of said first and second sensors is a sensor added to a network of sensors, and said newly added sensor is indicated to be the sensor to be relied upon.

121. The recalibration system of claim 117, wherein at least one of said first and second sensors is recalibrated by another means, and said recalibrated sensor is indicated to be the sensor to be relied upon.