SYSTEM AND METHOD FOR MEASURING A HEALTH INDEX OF A PLANT
First Claim
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1. A system for measuring a health index of a plant, comprising:
- a plant having a tree structure and includinga first level layer being a lowest level layer,a second level layer being a higher level layer than the first level layer, the second level layer including a plurality of components;
at least one sensor disposed in the plant to collect actual measurement values from the components;
a measuring unit connected to the plant via a wire or wireless communication manner and receiving the actual measurement values from the sensor to calculate the health index, the measuring unit includinga memory storing data including the actual measurement values and an operation history of the first level layer of the plant,an expected value calculation processor calculating an expected value of each of the components of the first level layer using data in the memory,an index value calculation processor calculating a tag index of said each of the components of the first level layer by comparing the expected value with an actual measurement value of said each of the components,a deviation average calculation processor calculating deviation values between the respective components of the first level layer and calculating a deviation average value by averaging the deviation values,a correction value calculation processor calculating a correction value of said each of the components of the first level layer based on the deviation average value of the components of the first level layer,a tag index average calculation processor calculating an tag index average value of the components of the first level layer by averaging tag indices of the components of the first level layer,an index calculation processor calculating an group index of a component of the second level layer to which the first level layer belongs, wherein the group index of the component of the second level layer is determined by selecting a greater one of;
a first value obtained by multiplying the correction value and the tag index average value of the components of the first level layer, anda second value which is the lowest tag index among the tag indices of the components of the first level layer.
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Abstract
Disclosed is a system and method for measuring a health index of a plant in which a condition of a lower level component is reflected. The actual measurement values of lower level components are reflected to the health index such that, when an actual measurement value of a certain component deviates from a normal range, if the deviation is less likely to trip the plant, the actual measurement value of the component has a minimal influence on the health index. The condition of the plant can be more easily and conveniently monitored based on only the health index of the uppermost level layer.
4 Citations
10 Claims
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1. A system for measuring a health index of a plant, comprising:
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a plant having a tree structure and including a first level layer being a lowest level layer, a second level layer being a higher level layer than the first level layer, the second level layer including a plurality of components; at least one sensor disposed in the plant to collect actual measurement values from the components; a measuring unit connected to the plant via a wire or wireless communication manner and receiving the actual measurement values from the sensor to calculate the health index, the measuring unit including a memory storing data including the actual measurement values and an operation history of the first level layer of the plant, an expected value calculation processor calculating an expected value of each of the components of the first level layer using data in the memory, an index value calculation processor calculating a tag index of said each of the components of the first level layer by comparing the expected value with an actual measurement value of said each of the components, a deviation average calculation processor calculating deviation values between the respective components of the first level layer and calculating a deviation average value by averaging the deviation values, a correction value calculation processor calculating a correction value of said each of the components of the first level layer based on the deviation average value of the components of the first level layer, a tag index average calculation processor calculating an tag index average value of the components of the first level layer by averaging tag indices of the components of the first level layer, an index calculation processor calculating an group index of a component of the second level layer to which the first level layer belongs, wherein the group index of the component of the second level layer is determined by selecting a greater one of; a first value obtained by multiplying the correction value and the tag index average value of the components of the first level layer, and a second value which is the lowest tag index among the tag indices of the components of the first level layer. - View Dependent Claims (2, 3, 4, 5)
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6. A method of measuring a health index of a plant, the plant having a tree structure and including
a first level layer being a lowest level layer, a second level layer being a higher level layer than the first level layer, the second level layer including a plurality of components, and the plant being connected with a measuring unit via a wire or wireless communication manner, the method comprising: -
collecting actual measurement values from the components by at least one sensor disposed in the plant; receiving the actual measurement values from the sensor by a measuring unit; calculating an expected value of each of the components of the first level layer, by an expected value calculation processor, using data stored in a memory, the data including the actual measurement values and an operation history of the first level layer of the plant; calculating a tag index of said each of the components of the first level layer, by an index value calculation processor, by comparing the expected value with an actual measurement value of said each of the components; calculating, by a deviation average calculation processor, deviation values between the respective components of the first level layer and calculating, by the deviation average calculation processor, an deviation average value by averaging the deviation values; calculating, by a correction value calculation processor, a correction value of said each of the components of the first level layer based on the deviation average value of the components of the first level layer; calculating, by a tag index average calculation processor, an tag index average value of the components of the first level layer by averaging tag indices of the components of the first level layer; calculating, by an index calculation processor, an group index of a component of the second level layer to which the first level layer belongs, wherein the group index of the component of the second level layer is determined by selecting a greater one of; a first value obtained by multiplying the correction value and the tag index average value of the components of the first level layer, and a second value which is the lowest tag index among the tag indices of the components of the first level layer. - View Dependent Claims (7, 8, 9, 10)
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Specification