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公开(公告)号：US4045734A
公开(公告)日：1977-08-30
申请号：US689643
申请日：1976-05-24
申请人： Louis G. Cox , Norbert L. Kusters
发明人： Louis G. Cox , Norbert L. Kusters
IPC分类号： G01R21/02
CPC分类号： G01R21/02
摘要： The differential thermal wattmeter for the ac/dc transfer of power includes a differential thermal converter as a "sum and difference" multiplier, with both ac and dc voltage and current signals simultaneously applied to both heaters. DC feedback to the current input speeds up the response and maintains thermal balance between the heaters, so that the output meter becomes a null indicator. This reduces and can eliminate the need for quadratic response. The requirement for exact matching of the thermal converters is also eliminated by effective interchange of the heaters.
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公开(公告)号：US3928800A
公开(公告)日：1975-12-23
申请号：US37357473
申请日：1973-06-25
申请人： SPERRY RAND CORP
发明人： STRENGLEIN HARRY F
摘要： Calorimetrically sensitive resistance bridges are adapted for providing a read out which is a linear function of power, either in analog or digital display form, by duty cycle control of power pulses applied across the bridge for re-balancing purposes.
摘要翻译： 量热敏感电阻桥适用于通过占用周期控制提供读出，通过占用周期控制跨桥的功率脉冲，以模拟或数字显示的形式，功率是线性函数，用于重新平衡。
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公开(公告)号：US2906957A
公开(公告)日：1959-09-29
申请号：US50538955
申请日：1955-05-02
申请人： GEN ELECTRIC CO LTD
发明人： BRIAN EASTER
IPC分类号： G01R21/02
CPC分类号： G01R21/02
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公开(公告)号：US2316153A
公开(公告)日：1943-04-13
申请号：US43659142
申请日：1942-03-28
申请人： RCA CORP
发明人： BROWN GEORGE H
IPC分类号： G01R21/02
CPC分类号： G01R21/02
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公开(公告)号：US20230196222A1
公开(公告)日：2023-06-22
申请号：US18072631
申请日：2022-11-30
发明人： Thomas E. Hoff
IPC分类号： G06Q10/0631 , G01K3/08 , G01R21/02 , G01K17/20 , G06Q50/06
摘要： The overall thermal performance of a building UATotal can be empirically estimated through a short-duration controlled test. Preferably, the controlled test is performed at night during the winter. A heating source is turned off after the indoor temperature has stabilized. After an extended period, such as 12 hours, the heating source is briefly turned back on, such as for an hour, then turned off. The indoor temperature is allowed to stabilize. The energy consumed within the building during the test period is assumed to equal internal heat gains. Overall thermal performance is estimated by balancing the heat gained with the heat lost during the test period.
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公开(公告)号：US11520369B2
公开(公告)日：2022-12-06
申请号：US16781976
申请日：2020-02-04
IPC分类号： G01R19/32 , G01R21/02 , G01R21/14 , G01R5/26 , G06F1/08 , G01K13/00 , G01R23/02 , G01R21/00 , G01R19/22 , G01R21/04 , G01R19/03 , G01R5/22
摘要： Techniques described herein address these and other issues by utilizing two or more sensors to take temperature measurements from which a temperature-differential or instantaneous temperature rate-of-change, can be determined. In turn, this can be used to make a highly accurate model of the relationship between the temperature, temperature-differential, and clock circuitry frequency, to accurately estimate the frequency rate-of-change for frequency correction/compensation.
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公开(公告)号：US11442086B2
公开(公告)日：2022-09-13
申请号：US16766152
申请日：2018-11-22
申请人： IQM Finland Oy
摘要： A detector of microwave radiation includes a signal input and a detector output. An absorber element of ohmic conductivity is coupled to said signal input through a first length of superconductor. A variable impedance element, the impedance of which is configured to change as a function of temperature, is coupled to the detector output through a second length of superconductor. The detector also includes a heating input and a heating element coupled to the heating input through a third length of superconductor. The absorber element, the variable impedance element, and the heating element are coupled to each other through superconductor sections of lengths shorter than any of said first, second, and third lengths of superconductor.
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公开(公告)号：US11340272B2
公开(公告)日：2022-05-24
申请号：US16608125
申请日：2018-04-25
申请人： ElectDis AB
发明人： Martin Neckmar , Laurens Swaans , Magnus Wikstrand
IPC分类号： G01R21/02 , G01R21/133
摘要： An apparatus and a method for determining a power value of a target in the form of an AC circuit (130; 230; 330) having an AC power source (132; 232; 332). The method involves operating (72) a controllable DC power source (12) to provide DC power to a DC circuit (10; 110; 210; 310) and measuring (73) at least one thermal parameter related to power dissipation of the DC circuit (10; 110; 210; 310) and of the target AC circuit (30; 130; 230; 330), wherein at least one heat sink (160a, 160b; 260; 360) is thermally coupled between the DC circuit (10; 110; 210; 310) and the target AC circuit (30; 130; 230; 330). The method further involves controlling (74) the DC power source (12) based on the measured at least one thermal parameter to reduce a difference in power dissipation between the DC circuit (10; 110; 210; 310) and the target AC circuit (30; 130; 230; 330). The method then involves, when thermal equilibrium is reached (75), determining the power value (49) of the target AC circuit (30; 130; 230; 330) by retrieving (76) at least one real-time measurement of at least one electric parameter of the DC circuit (10; 110; 210; 310), calculating (77) a DC power value of the DC circuit (10; 110; 210; 310) based on the retrieved at least one real-time measurement of the at least one electric parameter, and calculating (78) the power value (49) of the target AC circuit (30; 130; 230; 330) using the calculated DC power value.
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公开(公告)号：US11041892B2
公开(公告)日：2021-06-22
申请号：US16182104
申请日：2018-11-06
发明人： Takahiko Gomi , Ryu Nagasawa
摘要： A semiconductor device is provided which can suppress heating while assigning performances to a plurality of modules whose heat generations are controlled while considering usage conditions of the plurality of modules. The semiconductor device includes a load detection unit that detects operation rates of the plurality of modules, a weighting calculation unit that calculates coefficients of the plurality of modules based on the operation rates of the plurality of modules, and a heat generation control unit that controls power consumptions of the plurality of modules based on the coefficients of the plurality of modules.
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