TY - JOUR
T1 - Sensing of heat source in a deep layer by considering heat propagation
AU - Osawa, Yukiko
AU - Katsura, Seiichiro
N1 - Funding Information:
This paper proposed the method of sensing heat flow to detect a heat source in a deep layer with controlling. Heat propagation from the Peltier device was modeled by a thermal diffusion equation. The observer based on the distributed parameter system was established to estimate the torsion of heat flow involved propagation model. Presence of heat source can be found from the estimated heat flow, even though the temperature of the surface is almost the same. Therefore, the proposed method is valid for detecting heat source inside of the material in case that temperature of the surface is uniform and detection from a thermography is difficult. From the proposed method, it can be sensing a heat flow from the heat source in the material. The validity of the proposed method is verified through some experiments. The proposed method is expected to be applied to detect size or depth of heat source. Acknowledgment This work was supported by JSPS KAKENHI Grant Number JP17J06070.
Publisher Copyright:
© 2018 The Institute of Electrical Engineers of Japan.
PY - 2018
Y1 - 2018
N2 - Human sensing and tactile transmission utilizing thermal interface are necessary to support human life or for communicating with people in remote locations. For instance, the devices are used for remote health care, telesurgery, and so on. Many studies have utilized a Peltier device as the thermal interface, and there are many studies on the control and sensing of the device. However, in most of those studies, the heat propagation in the system is not considered, and only the point that is attached to the sensor can be observed and controlled. In particular, this is a problem for health care systems, because it is difficult to obtain information about the inside of the human body where it is hard to attach the sensor. In order to solve this problem, this study considers the heat propagation of materials such as the human body by developing a model based on the thermal diffusion equation. In the case of cooling material, heat propagation changes depending on the material condition, for example, the presence of heat source such as a cancer cell. Based on the thermal characteristics, a method to obtain the heat flow of material using heat propagation is proposed in this paper. It is possible to find a heat source in deep layers of a material by using the proposed method without attaching any sensor inside the material. Some experiments are conducted using aluminum cylinder as a propagation material to verify the validity of the proposed method.
AB - Human sensing and tactile transmission utilizing thermal interface are necessary to support human life or for communicating with people in remote locations. For instance, the devices are used for remote health care, telesurgery, and so on. Many studies have utilized a Peltier device as the thermal interface, and there are many studies on the control and sensing of the device. However, in most of those studies, the heat propagation in the system is not considered, and only the point that is attached to the sensor can be observed and controlled. In particular, this is a problem for health care systems, because it is difficult to obtain information about the inside of the human body where it is hard to attach the sensor. In order to solve this problem, this study considers the heat propagation of materials such as the human body by developing a model based on the thermal diffusion equation. In the case of cooling material, heat propagation changes depending on the material condition, for example, the presence of heat source such as a cancer cell. Based on the thermal characteristics, a method to obtain the heat flow of material using heat propagation is proposed in this paper. It is possible to find a heat source in deep layers of a material by using the proposed method without attaching any sensor inside the material. Some experiments are conducted using aluminum cylinder as a propagation material to verify the validity of the proposed method.
KW - Detection
KW - Estimation of heat flow
KW - Peltier device
KW - Thermal diffusion equation
KW - Thermoelectric conversion elements
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U2 - 10.1541/ieejjia.7.229
DO - 10.1541/ieejjia.7.229
M3 - Article
AN - SCOPUS:85046254117
SN - 2187-1094
VL - 7
SP - 229
EP - 235
JO - IEEJ Journal of Industry Applications
JF - IEEJ Journal of Industry Applications
IS - 3
ER -
