PULSE WAVE SENSOR

This pulse wave sensor has a strain body comprising a round opening part, and a strain gauge provided to the strain body that uses a Cr composite film as a resistor. If the diameter of the round opening part is d (mm), and the thickness of the strain body is t (mm): when the material of the strain b...

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Bibliographische Detailangaben
Hauptverfasser: KASHINO, Takashi, SHIMIZU, Ryo, ANJIKI, Syun, EGUCHI, Kotaro
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:This pulse wave sensor has a strain body comprising a round opening part, and a strain gauge provided to the strain body that uses a Cr composite film as a resistor. If the diameter of the round opening part is d (mm), and the thickness of the strain body is t (mm): when the material of the strain body is SUS and d=32, 0.059≤t≤0.124; when the material is SUS and d=22, 0.046≤t≤0.099; when the material is SUS and d=13, 0.030≤t≤0.067; when the material is SUS and d=7, 0.026≤t≤0.034; when the material is copper and d=32, 0.084≤t≤0.166; when the material is copper and d=22, 0.066≤t≤0.132; when the material is copper and d=13, 0.044≤t≤0.088; when the material is copper and d=7, 0.032≤t≤0.050; when the material is aluminum and d=32, 0.097≤t≤0.212; when the material is aluminum and d=22, 0.079≤t≤0.168; when the material is aluminum and d=13, 0.050≤t≤0.107; and when the material is aluminum and d=7, 0.038≤t≤0.063. Pulse waves are detected on the basis of a change in a resistance value of the resistor accompanying deformation of the strain body.