IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0840408
(2001-04-23)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
Schwegman, Lundberg, Woessner & Kluth, P.A.
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인용정보 |
피인용 횟수 :
40 인용 특허 :
45 |
초록
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A system is described which has a battery, a device which is powered by the battery in an episodic manner, and a charge storage capacitor. The system has attached to the charge storage capacitor a device or devices capable of: reading the rate of charge storage; or measuring both time and charge sto
A system is described which has a battery, a device which is powered by the battery in an episodic manner, and a charge storage capacitor. The system has attached to the charge storage capacitor a device or devices capable of: reading the rate of charge storage; or measuring both time and charge stored or added to the charge storage capacitor so that a rate of charge storage may be calculated. The estimated replacement time for the battery, particularly for a lithium battery in a pacing device, is easily estimated. Also described herein is a process for estimating a level of energy depletion in the system. The process comprises: finding a relatively quiescent period in powering of the device in the episodic manner; determining a rate of charging in the storage capacitor during the quiescent period; and correlating the rate of charging in the storage capacitor to a value of internal impedance in the battery through a comparison with known relationships for the battery and rate of charging to determine a value for the internal impedance of the battery.
대표청구항
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A system is described which has a battery, a device which is powered by the battery in an episodic manner, and a charge storage capacitor. The system has attached to the charge storage capacitor a device or devices capable of: reading the rate of charge storage; or measuring both time and charge sto
A system is described which has a battery, a device which is powered by the battery in an episodic manner, and a charge storage capacitor. The system has attached to the charge storage capacitor a device or devices capable of: reading the rate of charge storage; or measuring both time and charge stored or added to the charge storage capacitor so that a rate of charge storage may be calculated. The estimated replacement time for the battery, particularly for a lithium battery in a pacing device, is easily estimated. Also described herein is a process for estimating a level of energy depletion in the system. The process comprises: finding a relatively quiescent period in powering of the device in the episodic manner; determining a rate of charging in the storage capacitor during the quiescent period; and correlating the rate of charging in the storage capacitor to a value of internal impedance in the battery through a comparison with known relationships for the battery and rate of charging to determine a value for the internal impedance of the battery. isplaying means includes a video monitor capable of displaying at least output signal from said sensor array. 4. An apparatus as recited in claim 1, wherein said displaying means includes means for displaying the hottest temperature(s) of the medical target area interrogated by said sensor array. 5. An apparatus as recited in claim 1, wherein said displaying means includes means for displaying all of the output signals of said sensor array. 6. An apparatus as recited in claim 1, including means for calibrating at least one infrared sensor of said sensor array. 7. An apparatus as recited in claim 6, wherein said calibration means includes a small target having a known temperature and emissivity disposed in the optical path to said sensor array. 8. An apparatus as recited in claim 7, including means for moving said target into and out of the optical path to said sensor array. 9. An apparatus as recited in claim 7, including at least one optical element aligned with said target of known temperature, said at least one of said at least one optical element and said target being movable relative to the other to move the target selectively into and out of the optical path to the sensor array. 10. An apparatus as recited in claim 6, including a temperature measuring element disposed in a least one of said sensor array and a substrate supporting said sensor array, said temperature measuring element being capable of measuring a reference temperature. 11. An apparatus as recited in claim 1, including at least one lens for focusing a thermal image of said medical target area onto said sensor array. 12. An apparatus as recited in claim 11, including means for thermally isolating the sensor array from input other than that of the medical target area. 13. An apparatus as recited in claim 12, wherein said thermal isolation means includes an aperture stop disposed in relation to said at least one lens and said sensor array to allow only energy from said medical target area and said aperture stop to impinge on said sensor array. 14. An apparatus as recited in claim 1, including at least one lens disposed in relation to said sensor array along an optical axis, said at least one of said at least one lens and said sensor array being movable for variably focusing an image of said medical target area onto said sensor array. 15. A temperature measuring apparatus for interrogating a medical target area, said apparatus comprising: a plurality of infrared sensors disposed in a sensor array, each of said sensors being capable of providing an output signal indicative of temperature of a portion of said medical target area such that said sensor array cumulatively provides a temperature profile of said medical target area; and processing means for processing output signals from the sensor array, said processing means including means for determining temperature based on the output signals therefrom, wherein said processing means includes means for determining pulse based upon temporal variations in the output signals of certain portions of said temperature profile. 16. An apparatus as recited in claim 15, wherein said medical target area is the tympanic membrane. 17. An apparatus as recited in claim 15, wherein said medical target area is the armpit. 18. An apparatus as recited in claim 15, wherein said medical target area is under the tongue. 19. An apparatus as recited in claim 15, wherein said medical target area is the colon. 20. An apparatus as recited in claim 15, wherein said medical target area is the rectum. 21. An apparatus as recited in claim 15, wherein said medical target area is the temple area of a patient. 22. An apparatus as recited in claim 15, wherein said medical target area is an in vivo portion of skin. 23. An apparatus as recited in claim 15, wherein said processing means includes means for measuring each output signal of said sensor array and determining the output signals indicative of the hottest temperatures of said medical ta rget area. 24. An apparatus as recited in claim 15, wherein said sensor array is a linear one dimensional array. 25. An apparatus as recited in claim 15, wherein said sensor array is a two-dimensional sensor array. 26. An apparatus as recited in claim 15, wherein said processing means including means for determining the core body temperature based on the output signals of said plurality of infrared sensors. 27. A temperature measuring apparatus for interrogating a medical target area, said apparatus comprising: a plurality of infrared sensors disposed in a sensor array, each of said sensors being capable of providing an output signal indicative of temperature of a portion of said medical target area such that said sensor array cumulatively provides a temperature profile of said medical target area; and processing means for processing output signals from the sensor array, said processing means including means for determining temperature based on the output signals therefrom, wherein said processing means includes estimating means for estimating the hottest temperature(s) of said medical target area, wherein said estimating means predicts the hottest output signals of at least one estimated temperature from a profile of output signals, wherein said estimating means includes means for interpolating the hottest temperature from the output signals in said sensor array. 28. An apparatus as recited in claim 27, including means for indicating to a user that the output signal corresponding to the hottest temperature of the sensor array does not indicate the hottest temperature of the medical target area. 29. An apparatus as recited in claim 28, wherein said indicating means includes at least one of the group of audio, tactile, and light feedback. 30. A temperature measuring apparatus for interrogating a medical target area, said apparatus comprising: a plurality of infrared sensors disposed in a sensor array, each of said sensors being capable of providing an output signal indicative of temperature of a portion of said medical target area such that said sensor array cumulatively provides a temperature profile of said medical target area; and processing means for processing output signals from the sensor array, said processing means including means for determining temperature based on the output signals therefrom, wherein said processing means includes estimating means for estimating the hottest temperature(s) of said medical target area, wherein said estimating means predicts the hottest output signals of at least one estimated temperature from a profile of output signals, wherein said estimating means includes means for extrapolating the hottest temperature from a series of output signals if portions of the medical target are obstructed from the sensor array. 31. A temperature measuring apparatus for interrogating a medical target area, said apparatus comprising: a plurality of infrared sensors disposed in a sensor array, each of said sensors being capable of providing an output signal indicative of temperature of a portion of said medical target area such that said sensor array cumulatively provides a temperature profile of said medical target area; processing means for processing output signals from the sensor array, said processing means including means for determining temperature based on the output signals therefrom, and means for indicating to a user that the output signal corresponding to the hottest temperature of the sensor array does not indicate the hottest temperature of the medical target area wherein said indicating means includes directional guiding means for guiding a user to that portion of the medical target area having the hottest temperature. 32. An apparatus as recited in claim 31, wherein said indicating means includes at least one of the group consisting of audio, tactile, and light feedback. 33. A temperature measuring apparatus for interrogating a medical target area, said apparatus comprisin g: a plurality of infrared sensors disposed in a sensor array, each of said sensors being capable of providing an output signal indicative of temperature of a portion of said medical target area such that said sensor array cumulatively provides a temperature profile of said medical target area; and processing means for processing output signals from the sensor array, said processing means including means for determining temperature based on the output signals therefrom, wherein said processing means includes estimating means for estimating the hottest temperature(s) of said medical target area, including at least one display for displaying the hottest temperature(s) of said medical target area and including means for indicating to a user that the hottest temperature being displayed is an estimated value. 34. A temperature measuring apparatus for interrogating a medical target area, said apparatus comprising: a plurality of infrared sensors disposed in a sensor array, each of said sensors being capable of providing an output signal indicative of temperature of a portion of said medical target area such that said sensor array cumulatively provides a temperature profile of said medical target area; processing means for processing output signals from the sensor array, said processing means including means for determining temperature based on the output signals therefrom, at least one lens for focusing a thermal image of said medical target area onto said sensor array including means for thermally isolating the sensor array from input other than that of the medical target area, wherein said thermal isolation means includes an aperture stop disposed in relation to said at least one lens and said sensor array to allow only energy from said medical target area and said aperture stop to impinge on said sensor array including a substrate supporting said sensor array, said aperture stop being thermally connected to said substrate such that said aperture stop and said substrate have substantially equivalent temperatures. 35. A temperature measuring apparatus for interrogating a medical target area, said apparatus comprising: a plurality of infrared sensors disposed in a sensor array, each of said sensors being capable of providing an output signal indicative of temperature of a portion of said medical target area such that said sensor array cumulatively provides a temperature profile of said medical target area; processing means for processing output signals from the sensor array, said processing means including means for determining temperature based on the output signals therefrom, at least one lens for focusing a thermal image of said medical target area onto said sensor array including means for thermally isolating the sensor array from input other than that of the medical target area, wherein said thermal isolation means includes an aperture stop disposed in relation to said at least one lens and said sensor array to allow only energy from said medical target area and said aperture stop to impinge on said sensor array, including means for measuring the temperature of said aperture stop. 36. An apparatus as recited in claim 35, wherein the sensor array can be compensated for using the measured temperature of said aperture stop. 37. An apparatus as recited in claim 35, wherein said aperture stop temperature measuring means includes at least one infrared sensor of said sensor array. 38. A temperature measuring apparatus for interrogating a medical target area, said apparatus comprising: a plurality of infrared sensors disposed in a sensor array, each of said sensors being capable of providing an output signal indicative of temperature of a portion of said medical target area such that said sensor array cumulatively provides a temperature profile of said medical target area; processing means for processing output signals from the sensor array, said processing means including means for determining temperature based o
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