نتایج جستجو برای: thermopile

تعداد نتایج: 188  

Journal: :IEEJ Transactions on Sensors and Micromachines 2002

Journal: :The Journal of experimental biology 1998
F Lou N A Curtin R C Woledge

When a thermopile is used to measure the heat production of isolated muscle, the muscle is surrounded by gas saturated with water vapour, initially in equilibrium with the muscle. After contraction, the osmolarity of the muscle is raised so that it is no longer in equilibrium with the gas around it, and condensation will occur. When artificial muscles of known osmolarity were placed on a thermo...

Journal: :The American journal of physiology 1977
L A Mulieri G Luhr J Trefry N R Alpert

A method of fabricating Hill-Downing type, planar thermopiles by vacuum-deposition techniques is described in detail. The present model was designed for initial heat measurements on rabbit papillary muscles as small as 1 mg blotted wt, but it is also suitable for small bundles of frog muscle fibers (30-75). The thermopile has 20 or 14 junctions, an active length of 5 or 3.5 mm, and an actual th...

2016
Fabiola Socorro Pedro Jesús Rodríguez de Rivera Manuel Rodríguez de Rivera

We have developed a calorimetry sensor that can perform a local measurement of the surface heat dissipated from the human body. The operating principle is based on the law of conductive heat transfer: heat dissipated by the human body passes across a thermopile located between the individual and a thermostat. Body heat power is calculated from the signals measured by the thermopile and the amou...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 2016

2007
Frank Vignola Ibrahim Reda

The IR loss in diffuse measurements made by thermopile pyranometers is examined. Diffuse measurements are used for the study of IR losses because diffuse irradiance is much smaller than the total irradiance and hence the IR effects can be more clearly seen. Specifically, diffuse measurements of an Eppley PSP pyranometer are compared to those made with a Schenk Star pyranometer. Pyranometers wit...

2015
Varun Lingaiah Kopparthy Siva Mahesh Tangutooru Eric J. Guilbeau

A thermoelectric biosensor for the detection of L-glutamate concentration was developed. The thermoelectric sensor is integrated into a micro-calorimeter which measures the heat produced by biochemical reactions. The device contains a single flow channel that is 120 µm high and 10 mm wide with two fluid inlets and one fluid outlet. An antimony-bismuth (Sb-Bi) thermopile with high common mode re...

Journal: :Cancer research 1950
E PONDER

The method recently described by Huggins, Miller, and Jensen (1049) for measuring defects in the coagulation mechanism of the sera of cancer patients cannot be applied without modification to the sera of small experimental animals because the quantity of serum required is too large. By substi tuting a measurement of the opacity of the heated serum for a measurement of its coagulability (or inhi...

Journal: :IEEE Sensors Journal 2021

People-counting data can be used in building-control systems to improve comfort and space management applications optimize building space. In this work, we consider a combi-sensor with single-pixel thermopile passive infrared sensor for people counting. We first develop signal model object temperature measurements under multiple occupancy. then propose counting method based on: cumulative sum (...

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