Predictive temperature measurement system
First Claim
1. A thermometer for measuring the temperature of an object, comprising:
- a sensor which, when positioned to sense the temperature of the object, provides a time varying temperature signal in response to the temperature of the object;
a processor connected so as to sample the temperature signal a predetermined number of times, to determine the average value, the first derivative, and the second derivative of the temperature signal based upon the predetermined number of samples acquired, and to combine the average value, first derivative, and second derivative to calculate an estimate of the temperature of the object and provide an estimated final temperature signal; and
a display connected with the processor to receive and display the estimated final temperature signal.
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Accused Products
Abstract
A method and device for rapidly predicting the temperature of an object through a sensor reading of the object'"'"'s temperature by using a processor comprising finite impulse response (FIR) filters to determine the average value, the first derivative, and the second derivative of the sensed temperature based upon a predetermined number of temperature samples, apply a respective weighting factor to each of the average value, the first derivative, and the second derivative respectively, and calculate a temperature estimate by combining the weighted average value, the first derivative, and second derivative together with an offset factor.
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Citations
41 Claims
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1. A thermometer for measuring the temperature of an object, comprising:
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a sensor which, when positioned to sense the temperature of the object, provides a time varying temperature signal in response to the temperature of the object;
a processor connected so as to sample the temperature signal a predetermined number of times, to determine the average value, the first derivative, and the second derivative of the temperature signal based upon the predetermined number of samples acquired, and to combine the average value, first derivative, and second derivative to calculate an estimate of the temperature of the object and provide an estimated final temperature signal; and
a display connected with the processor to receive and display the estimated final temperature signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 14)
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- 11. The thermometer of claim I wherein the processor comprises a finite impulse response filter configured to calculate the temperature estimate.
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15. A method for measuring the temperature of an object, comprising the steps of:
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sensing the temperature of the object;
providing a time varying temperature signal responsive to sensing the temperature of the object;
sampling the temperature signal a predetermined number of times;
determining the average value of the temperature signal based upon the predetermined number of samples acquired;
determining the first derivative of the temperature signal based upon the predetermined number of samples acquired;
determining the second derivative of the temperature signal based upon the predetermined number of samples acquired; and
calculating an estimate of the temperature of the object by combining the average value, the first derivative, and the second derivative. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A thermometer for measuring the temperature of a biological subject, comprising:
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a sensor which, when positioned to sense the temperature of the subject, provides a time varying temperature signal in response to the temperature of the subject;
a processor comprising a finite impulse response filter connected so as to sample the temperature signal a predetermined number of times, to determine the average value, the first derivative, and the second derivative of the temperature signal based upon the predetermined number of samples acquired, the processor also configured to combine the average value, first derivative, and second derivative to calculate an estimate of the temperature of the subject and provide an estimated final temperature signal; and
a display connected with the processor to receive and display the estimated final temperature signal. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38)
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39. A thermometer for measuring the temperature of a biological subject, comprising:
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a sensor which, when positioned to sense the temperature of the subject, provides a time varying temperature signal in response to the temperature of the subject;
a processor comprising a finite impulse response filter connected so as to sample the temperature signal a plurality of times to calculate an estimate of the temperature of the subject and provide an estimated final temperature signal; and
a display connected with the processor to receive and display the estimated final temperature signal. - View Dependent Claims (40, 41)
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Specification