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公开(公告)号：US4910409A
公开(公告)日：1990-03-20
申请号：US268225
申请日：1988-11-07
Applicant: James W. Hoffman , Ronald C. Grush
Inventor： James W. Hoffman , Ronald C. Grush
CPC classification number: G01J1/4228 , G01J5/0003 , G01J5/02 , G01J5/0225 , G01J5/041 , G01J5/08 , G01J5/0834 , G01J5/0846 , G01J5/0853 , G01J5/0862 , G01J2005/068
Abstract: A sensing cavity is directed towards the radiation to be measured. An identical reference cavity is directed towards a heat sink which is maintained at a constant temperature. An electric heater and a temperature sensor are mounted on both the sensing cavity and the reference cavity. The temperature sensors are connected to a bridge which is powered only when an observation is made. The heater on the sensing cavity is controlled by bridge imbalance to equalize the temperature of the two cavities. The heater power is then a direct measure of the difference in the power entering the sensing cavity and the power entering the reference cavity. By knowing the power entering the reference cavity, the power entering the sensing cavity can be calculated. The two cavities are mounted together to a common heat sink and have a directly associated preamplifier circuit included in the modular mounting. A plurality of such sensors is used to obtain radiance measurements in many directions simultaneously.
Abstract translation: 感测腔被引导到待测量的辐射。 相同的参考空腔被引导到保持在恒定温度的散热器。 一个电加热器和一个温度传感器安装在感应腔和参考腔两者上。 温度传感器连接到仅在进行观察时供电的桥。 感应腔上的加热器由桥梁不平衡控制，以均衡两个腔体的温度。 然后，加热器功率直接测量进入感测腔的功率的差异和进入参考腔的功率。 通过了解进入参考腔的功率，可以计算进入感应腔的功率。 两个腔体一起安装到公共散热器，并具有包括在模块化安装中的直接相关的前置放大器电路。 使用多个这样的传感器来同时在许多方向上获得辐射测量。
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公开(公告)号：US4726688A
公开(公告)日：1988-02-23
申请号：US923922
申请日：1986-10-28
Applicant: Christian Ruel
Inventor： Christian Ruel
CPC classification number: G01J5/12 , G01J2005/068
Abstract: This radiometer accurately measures IR and solar spectrum radiation in a vacuum, and accounts for radiation loss from its sensing plate by measuring the housing temperature. Calibration is performed by measuring the temperature of the sensing plate and housing while power to a heater attached to the sensing plate is varied. The square of the difference between the measured power dissipation of the heater and the heat absorbed by the sensing plate as determined from the heat balance equation of the sensing plate is minimized to obtain calibration factors for the heat balance equation.
Abstract translation: 该辐射计精确测量真空中的红外和太阳光谱辐射，并通过测量壳体温度来解决其感测板的辐射损失。 通过测量感应板和外壳的温度来进行校准，同时连接到感应板上的加热器的功率发生变化。 根据感测板的热平衡方程确定的加热器的测量功率消耗和感测板吸收的热量之间的差的平方被最小化以获得热平衡方程的校准因子。
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公开(公告)号：US4566808A
公开(公告)日：1986-01-28
申请号：US466789
申请日：1983-02-16
Applicant: Francesco Pompei , Shiraz Daya
Inventor： Francesco Pompei , Shiraz Daya
CPC classification number: G01J5/16 , G01J5/02 , G01J5/025 , G01J5/0265 , G01J5/04 , G01J5/08 , G01J5/089 , G01J5/10 , G01J2001/0257 , G01J2005/0081 , G01J2005/068 , G01J5/12
Abstract: A radiation detector includes a flat housing 14 having a radiation sensor 16 at one end thereof and a bar graph display 18 at the other end thereof. The bar graph display provides an indication of radiation sensed from a limited surface area as the sensor is scanned across an extended surface area. The width of the housing 14 is such that, when the housing is held at about arm's length in the line of sight, the width defines a field of view which approximates the field of view of the radiation sensor.
Abstract translation: 辐射检测器包括在其一端具有辐射传感器16的平坦壳体14和在其另一端处的条形图显示器18。 当传感器跨越延伸的表面区域扫描时，条形图显示提供从受限表面区域感测到的辐射的指示。 壳体14的宽度使得当壳体以视线的大约臂长度保持时，宽度限定了近似辐射传感器的视场的视场。
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公开(公告)号：US4456390A
公开(公告)日：1984-06-26
申请号：US315343
申请日：1981-10-26
Applicant: Kenneth G. Junkert , Henry P. Voznick
Inventor： Kenneth G. Junkert , Henry P. Voznick
CPC classification number: G01J5/16 , G01J5/02 , G01J5/025 , G01J5/0265 , G01J5/04 , G01J2005/0081 , G01J2005/068 , G01J5/045
Abstract: A portable, battery operated noncontact temperature measuring device including a lens for collecting infrared radiation and a thermopile for producing a signal indicative of the intensity thereof. The thermopile signal is amplified, linearized and summed with an ambient temperature signal derived from a temperature responsive element, e.g. a diode chip mounted immediately adjacent a cold junction of the thermopile. The resulting composite temperature signal is then processed and displayed. The ambient temperature signal is also utilized to control the impedance of a dual field effect transistor, which in turn controls the gain of the amplifier. Thus, temperature induced variations in the responsivity of the thermopile are compensated by corresponding changes in the gain of the amplifier. An adjustable high impedance bias circuit provides bias current to the input of the amplifier, insuring that the signal at the output of the amplifier will not be affected by temperature induced changes in the internal resistance of the thermopile. A switching circuit alternately connects the output of the thermopile and a resistor having a resistance approximately equal to the internal resistance of the thermopile to the input of the amplifier. When the resistor is so connected, an automatic zeroing circuit reduces the amplifier output to approximately zero, thereby essentially eliminating amplifier drift.
Abstract translation: 一种便携式电池操作的非接触式温度测量装置，包括用于收集红外辐射的透镜和用于产生指示其强度的信号的热电堆。 热电堆信号被放大，线性化并与来自温度响应元件的环境温度信号相加。 紧邻热电堆的冷连接处的二极管芯片。 然后对所得的复合温度信号进行处理和显示。 环境温度信号也用于控制双场效应晶体管的阻抗，这又控制了放大器的增益。 因此，通过放大器的增益的相应变化来补偿热电堆的温度引起的响应性变化。 可调高阻抗偏置电路向放大器的输入端提供偏置电流，确保放大器输出端的信号不受温度引起的热电堆内阻的变化的影响。 开关电路交替地将热电堆的输出和具有大约等于热电堆的内部电阻的电阻的电阻器交替地连接到放大器的输入端。 当电阻如此连接时，自动归零电路将放大器输出减少到大约零，从而基本上消除了放大器漂移。
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公开(公告)号：US4372690A
公开(公告)日：1983-02-08
申请号：US241467
申请日：1981-03-06
Applicant: Herbert L. Berman , James C. Sprout
Inventor： Herbert L. Berman , James C. Sprout
IPC: G01J5/00
CPC classification number: G01K17/00 , G01J5/02 , G01J5/0265 , G01J5/0295 , G01J5/08 , G01J5/0806 , G01J5/16 , G01J5/522 , G01J2005/068
Abstract: In a thermal radiation measuring arrangement, a thermal radiation detector is located at the focal point of a collecting mirror, upon which incident thermal radiation from a surface, such as a building wall, is directed. The thermal radiation detector may be, for example, a thermopile, and provides an output signal having a magnitude proportional to the amount of thermal radiation which it receives. The temperature detection means detects the temperature of the thermal radiation detector and, for example, may detect the cold junction of the thermopile. In a first operating condition, a signal summing means receives the output signal from the thermal radiation detector and the temperature detection means and provides a third output signal proportional to the sum of these first and second output signals. In a second operating condition, a signal biasing means is connected into the signal summing means. The signal biasing means provides a signal to the signal summing means to cause the third output signal to become zero when radiation is received from a reference surface. When the arrangement is in the second operating condition and directed to receive thermal radiation from a second surface different from the reference surface, the signal biasing means maintains the same level of bias to the signal summing means as it did when detecting the radiation from the reference surface.
Abstract translation: 在热辐射测量装置中，热辐射检测器位于收集反射镜的焦点处，来自诸如建筑物墙壁的表面的入射热辐射被引导到其上。 热辐射检测器可以是例如热电堆，并且提供具有与其接收的热辐射量成比例的大小的输出信号。 温度检测装置检测热辐射检测器的温度，例如可以检测热电堆的冷接点。 在第一操作条件下，信号求和装置接收来自热辐射检测器和温度检测装置的输出信号，并提供与这些第一和第二输出信号的和成比例的第三输出信号。 在第二操作条件下，信号偏置装置连接到信号求和装置中。 当从参考表面接收辐射时，信号偏置装置向信号求和装置提供信号以使第三输出信号变为零。 当该装置处于第二操作状态并且被指导为接收不同于参考表面的第二表面的热辐射时，信号偏置装置保持与信号求和装置相同的偏置水平，就像在检测来自参考的辐射时一样 表面。
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Patent Agency Ranking
公开(公告)号：US3875408A
公开(公告)日：1975-04-01
申请号：US37771073
申请日：1973-07-09
Applicant: PUSCH GUNTER
Inventor： PUSCH GUNTER
CPC classification number: G01J5/061 , G01J5/08 , G01J5/0806 , G01J5/0815 , G01J5/0846 , G01J5/0862 , G01J5/0893 , G01J2005/068
Abstract: A method of and device for ascertaining thermal constrasts, according to which the reception of thermal radiation is limited to the through passage region of an atmospheric window.
Abstract translation: 用于确定热对流的方法和装置，根据该方法，热辐射的接收被限制到大气窗的通过区域。
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公开(公告)号：US09989409B2
公开(公告)日：2018-06-05
申请号：US14964927
申请日：2015-12-10
Applicant: MELEXIS TECHNOLOGIES NV
Inventor： Appolonius Jacobus Van Der Wiel
CPC classification number: G01J1/4228 , G01J1/1626 , G01J5/0225 , G01J5/024 , G01J5/0285 , G01J5/045 , G01J5/06 , G01J5/061 , G01J5/12 , G01J5/14 , G01J5/20 , G01J2005/0048 , G01J2005/063 , G01J2005/065 , G01J2005/066 , G01J2005/068
Abstract: A semiconductor device for measuring IR radiation is disclosed. It comprises a substrate and a cap enclosing a cavity, a sensor pixel in the cavity, comprising a first absorber for receiving said IR radiation, a first heater, first temperature measurement means for measuring a first temperature; a reference pixel in the same cavity, comprising a second absorber shielded from said IR radiation, a second heater, and second temperature measurement means for measuring a second temperature; a control circuit for applying a first/second power to the first/second heater such that the first temperature equals the second temperature; and an output circuit for generating an output signal indicative of the IR radiation based on a difference between the first and second power.
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公开(公告)号：US09880058B2
公开(公告)日：2018-01-30
申请号：US14557554
申请日：2014-12-02
Applicant: Takeshi Nagahisa
Inventor： Takeshi Nagahisa
CPC classification number: G01J5/10 , G01J5/0022 , G01J5/0025 , G01J5/06 , G01J2005/0048 , G01J2005/068
Abstract: A semiconductor integrated circuit includes an acquisition unit configured to acquire a value outputted from an infrared sensor in response to an infrared ray received from an object, and a value outputted from a temperature sensor as a function of measured temperature of the infrared sensor; a second-temperature identification circuit configured to identify a second temperature which is a temperature of the object when the temperature of the infrared sensor corresponding to a measured value which is the output value of the infrared sensor, is the first temperature, by referring to the correspondence; a third-temperature identification circuit configured to identify a third temperature which is the temperature of the infrared sensor in outputting the measured value; and a calculation circuit configured to calculate a fourth temperature which is a temperature of the object on the basis of the first temperature, the second temperature, and the third temperature.
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公开(公告)号：US09851259B2
公开(公告)日：2017-12-26
申请号：US15237549
申请日：2016-08-15
Applicant: MivaLife Mobile Technology, Inc.
Inventor： Hongjuan Zhao , Yueqiong Wang , Kai Li , Hangqiang Chen , Shangyu Guo , Shaodong Ma , Qin Yuan
IPC: G08B17/00 , G01J5/18 , G01J5/00 , G01J5/02 , G01J5/08 , A61B5/01 , G01K1/20 , G08B21/04 , G08B21/22 , G01J5/12 , G01J5/34 , G01J5/10 , G01J5/06
CPC classification number: G01J5/18 , A61B5/01 , G01J5/0025 , G01J5/0066 , G01J5/026 , G01J5/028 , G01J5/0846 , G01J5/089 , G01J5/0893 , G01J5/12 , G01J5/34 , G01J2005/0048 , G01J2005/0085 , G01J2005/068 , G01J2005/106 , G01K1/20 , G08B21/0469 , G08B21/22
Abstract: Methods, systems, and apparatus, for an infrared detector are provided. In one aspect, an infrared detector is provided that includes a pyroelectric sensor; a controller for receiving a trigger signal outputted by the pyroelectric sensor; a thermopile sensor, wherein the controller starts the thermopile sensor after receiving the trigger signal output by the pyroelectric sensor; and an alarm, wherein the controller controls the alarm to generate an alarm signal in response to a determination that a difference between a current temperature and a background temperature detected by the thermopile sensor is larger than a threshold value and a determination that the areas of the thermopile sensor activated correspond to a human being.
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公开(公告)号：US09851258B2
公开(公告)日：2017-12-26
申请号：US14671007
申请日：2015-03-27
Applicant: Maxim Integrated Products, Inc.
Inventor： Cheng-Wei Pei , Craig A. Easson , Arvin Emadi , Nicole D. Kerness , Stanley Barnett
CPC classification number: G01J5/12 , G01J5/045 , G01J5/06 , G01J2005/068
Abstract: A sensor package having a thermopile sensor and a reference thermopile sensor disposed therein. In one or more implementations, the sensor package includes a substrate, a thermopile sensor disposed over the substrate, a reference thermopile sensor disposed over the substrate, and a lid assembly disposed over the thermopile sensor and the reference thermopile sensor. The lid assembly includes a transparent structure that passes electromagnetic radiation occurring in a limited spectrum of wavelengths and an electromagnetic blocker disposed over the lid assembly. The electromagnetic blocker defines an aperture over the thermopile sensor such that at least a portion of the electromagnetic blocker is positioned over the reference thermopile sensor. The electromagnetic blocker is configured to at least substantially block the electromagnetic radiation occurring in a limited spectrum of wavelengths from reaching the reference thermopile sensor.
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