Measuring system that allocates a measured value to a measurable variable and measurment transducer thereof
First Claim
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1. A measuring system for determining a value of a measured parameter M, comprising:
- sensor means for supplying an electrical measuring signal S having a value which is dependent on a value of the measured parameter M;
control means connected to receive said measured signal S from said sensor means, said control means having a type characteristic memory containing a definition of a type characteristic curve, points of the type characteristic curve defining particular values of parameter M corresponding to particular values for measured signal S, said definition of said type characteristic curve being based on an average of individual characteristic curves of a plurality of sensor means of a same type as the sensor means connected to the control means, each of said individual characteristic curves defining values of signal S for corresponding values of parameter M for each of the plurality of sensor means;
said sensor means connected to the control means including a coding memory means containing data for defining as individual characteristic curve of the connected sensor means;
said control means including means for defining said individual characteristic curve of the connected sensor means by use of said data from the coding memory means and said points defining the type characteristic curve, and including memory means for storing the defined individual characteristic curve; and
said control means determining from the defined individual characteristic curve of the connected sensor an output value X corresponding to a measured value S input to the control means.
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Abstract
A type characteristic of a measurement transducer is stored in a type memory of an evaluator. Deviations of the type characteristic from the individual characteristic of the measurement transducer are defined by individual values which accompany the measurement transducer in a coding memory. A computer of the evaluator identifies the corresponding measured value for every electrical measured signal from the type characteristic and from the individual values.
67 Citations
18 Claims
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1. A measuring system for determining a value of a measured parameter M, comprising:
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sensor means for supplying an electrical measuring signal S having a value which is dependent on a value of the measured parameter M; control means connected to receive said measured signal S from said sensor means, said control means having a type characteristic memory containing a definition of a type characteristic curve, points of the type characteristic curve defining particular values of parameter M corresponding to particular values for measured signal S, said definition of said type characteristic curve being based on an average of individual characteristic curves of a plurality of sensor means of a same type as the sensor means connected to the control means, each of said individual characteristic curves defining values of signal S for corresponding values of parameter M for each of the plurality of sensor means; said sensor means connected to the control means including a coding memory means containing data for defining as individual characteristic curve of the connected sensor means; said control means including means for defining said individual characteristic curve of the connected sensor means by use of said data from the coding memory means and said points defining the type characteristic curve, and including memory means for storing the defined individual characteristic curve; and said control means determining from the defined individual characteristic curve of the connected sensor an output value X corresponding to a measured value S input to the control means. - View Dependent Claims (2, 3, 4, 5)
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6. A method for measuring a value of a parameter M by use of an individual sensor to be connected to a control means, and wherein each individual sensor to be connected to the control means may have a different type characteristic curve, comprising steps of:
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measuring a plurality of sensors of a same type as said individual sensor to be connected to the control means to determine a definition of an averaged type characteristic curve based on an average of characteristic curves of said measured sensors; providing the individual sensor with a coding memory having data stored therein used for defining an individual characteristic curve of the connected individual sensor; defining said individual characteristic curve by using the data from the coding memory with the definition of the averaged type characteristic curve; and determining an output value X depending on a measurement of parameter M by use of the individual characteristic curve and a corresponding value S input to the control means. - View Dependent Claims (7, 8, 9)
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10. A measuring system for determining a value X of a measured parameter M, comprising:
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sensor means for supplying an electrical measured signal S having a value which is dependent on a value of the measured parameter M; control means having an input connected to receive said measured signal S from said sensor means, said control device means having a type characteristic memory containing a given type characteristic curve, each point on it defining corresponding values of parameter M and measured signal S; said sensor means connected to the control device means including a coding memory means containing data for defining an individual characteristic curve of the connected sensor means; said control means including means for computing a series of points defining said individual characteristic curve of the sensor means form the data in the coding memory means and said type characteristic curve in the type characteristic memory, each point defining an output value X for a correlated measured signal S, and including individual memory means for storing and reading said points of the individual characteristic curve; and said control means employing the individual memory means to read out a correlated output value X for each measured signal S at the input of the control means. - View Dependent Claims (11, 12, 13, 14)
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15. A method for measuring a value of a parameter M by use of an individual sensor to be connected to a control means, comprising steps of:
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providing the individual sensor with a coding memory having data stored therein for defining an individual characteristic curve of the individual sensor; providing and storing a type characteristic curve; defining said individual characteristic curve by using the data from the coding memory and from the stored type characteristic curve; and determining an output value X directly from the individual characteristic curve depending on a measurement of parameter M and the corresponding measured signal S input to the control means. - View Dependent Claims (16, 17, 18)
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Specification