公开(公告)号：US5229612B1

公开(公告)日：1998-04-14

申请号：US71603891

申请日：1991-06-14

Applicant: EXERGEN CORP

Inventor： POMPEI FRANCESCO ,  TERNULLO JANUS

IPC: G01J5/14 ,  G01J5/16 ,  G01J5/26

CPC classification number: G01J5/14 ,  G01J5/16

Abstract: A radiation detector employs a thermopile having a potentiometer for calibrating the thermopile output to best suit a particular output meter and sensing application. A thermocouple may be connected in series with the thermopile. The output of the thermopile is calibrated to best match a linear function which intersects the thermopile output function at a temperature in the center of a temperature range of interest. A total output signal of the detector is the sum of the thermopile signal and the thermocouple signal, and is indicative of the temperature of a target emitting radiation sensed by the thermopile. The series connection of the thermopile and the thermocouple allow the thermopile hot junction temperature to be referenced to the cold junction temperature of the thermocouple. Thus, the reference temperature may be remote from the thermopile sensor. A filtering lens may be used to prevent short wavelength radiation from reaching the thermopile sensor, improving the linearity of the thermopile response. To improve the response to low emissivity targets, long wavelength radiation may be filtered out at a loss of linearity. Two detectors may be connected differentially to provide a differential output indicative of the temperature difference between two targets. Additionally, a temperature dependent variable resistor may be coupled to the thermopile, providing a variable resistance that combines with the thermopile output response to produce a linearized thermopile output response. Then, the total output signal of the detector for a particular target temperature is independent of fluctuations in local temperature.

公开(公告)号：US20010019574A1

公开(公告)日：2001-09-06

申请号：US09815817

申请日：2001-03-23

Applicant: Exergen Corp

Inventor： Francesco Pompei ,  Janus Ternullo

IPC: G01J005/02

CPC classification number: G01J5/16 ,  G01J5/0022 ,  G01J5/0025 ,  G01J5/02 ,  G01J5/021 ,  G01J5/025 ,  G01J5/026 ,  G01J5/0265 ,  G01J5/04 ,  G01J5/045 ,  G01J5/06 ,  G01J2005/068

Abstract: A radiation detector for axillary temperature measurement comprises a wand having an axially directed radiation sensor at one end and an offset handle at the opposite end. The radiation sensor is mounted within a heat sink and retained by an elastomer in compression. The radiation sensor views a target surface through an emissivity compensating cup and a plastic film. A variable reference is applied to a radiation sensor and amplifier circuit in order to maintain full analog-to-digital converter resolution over design ranges of target and sensor temperature with the sensor temperature either above or below target temperature.

公开(公告)号：US20020186745A1

公开(公告)日：2002-12-12

申请号：US10136029

申请日：2002-04-30

Applicant: Exergen Corp.

Inventor： Francesco Pompei ,  Janus Ternullo

IPC: G01J005/00

CPC classification number: G01J5/02 ,  G01J5/0022 ,  G01J5/0025 ,  G01J5/021 ,  G01J5/026 ,  G01J5/0265 ,  G01J5/04 ,  G01J5/045 ,  G01J5/06 ,  G01J5/16 ,  G01J2005/068

Abstract: A radiation detector for axillary temperature measurement comprises a wand having an axially directed radiation sensor at one end and an offset handle at the opposite end. The radiation sensor is mounted within a heat sink and retained by an elastomer in compression. The radiation sensor views a target surface through an emissivity compensating cup and a plastic film. A variable reference is applied to a radiation sensor and amplifier circuit in order to maintain full converter resolution over design ranges of target and sensor temperature with the sensor temperature either above or below target temperature.

Abstract translation: 用于腋温度测量的辐射检测器包括在一端具有轴向指向的辐射传感器的杆和在相对端的偏移手柄。 辐射传感器安装在散热器内并由弹性体保持压缩。 辐射传感器通过发射率补偿杯和塑料膜来观察目标表面。 可变参考应用于辐射传感器和放大器电路，以便在传感器温度高于或低于目标温度的情况下，保持完全转换器分辨率超过目标和传感器温度的设计范围。