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1. WO2020138031 - GAS SENSOR

Publication Number WO/2020/138031
Publication Date 02.07.2020
International Application No. PCT/JP2019/050506
International Filing Date 24.12.2019
IPC
G01N 29/024 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
02Analysing fluids
024by measuring propagation velocity or propagation time of acoustic waves
G01N 29/22 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
22Details
CPC
G01N 29/024
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
02Analysing fluids
024by measuring propagation velocity or propagation time of acoustic waves
G01N 29/22
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
22Details ; , e.g. general constructional or apparatus details
G01N 29/44
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
44Processing the detected response signal ; , e.g. electronic circuits specially adapted therefor
Applicants
  • 日清紡ホールディングス株式会社 NISSHINBO HOLDINGS INC. [JP]/[JP]
  • 日本無線株式会社 JAPAN RADIO CO., LTD. [JP]/[JP]
  • 上田日本無線株式会社 UEDA JAPAN RADIO CO., LTD. [JP]/[JP]
Inventors
  • 瀬尾 大輔 SEO Daisuke
  • 鳥山 泰弘 TORIYAMA Yasuhiro
Agents
  • 特許業務法人YKI国際特許事務所 YKI INTELLECTUAL PROPERTY ATTORNEYS
Priority Data
2018-24286826.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) GAS SENSOR
(FR) CAPTEUR DE GAZ
(JA) 気体センサ
Abstract
(EN)
The objective of the present invention is to measure gas concentration with a high degree of accuracy. A gas sensor (10) is provided with: a sensor enclosure (14); an ultrasonic transducer (30) provided at one end of the sensor enclosure (14); an ultrasonic wave reflecting surface (44) which is provided at the other end of the sensor enclosure (14) and which intersects an axial direction of the sensor enclosure (14); and a plurality of ventilation holes (16) provided in a side wall of the sensor enclosure (14). The plurality of ventilation holes (16) are provided in positions such that one side of the sensor enclosure (14) cannot be seen from the other side thereof when viewed from a side surface side of the sensor enclosure (14), and each ventilation hole (16) has a shape extending in the axial direction of the sensor enclosure (14).
(FR)
L'objectif de la présente invention est de mesurer la concentration de gaz avec un degré élevé de précision. Un capteur de gaz (10) est pourvu : d'une enceinte de capteur (14) ; d'un transducteur ultrasonore (30) disposé à une extrémité de l'enceinte de capteur (14) ; d'une surface de réflexion d'onde ultrasonore (44) disposée à l'autre extrémité de l'enceinte de capteur (14) et coupant une direction axiale de l'enceinte de capteur (14) ; et une pluralité de trous de ventilation (16) disposés dans une paroi latérale de l'enceinte de capteur (14). La pluralité de trous de ventilation (16) est disposée dans des positions telles qu'un côté de l'enceinte de capteur (14) ne peut pas être vu depuis l'autre côté de celle-ci lorsqu'il est vu depuis un côté de surface latérale de l'enceinte de capteur (14), et chaque trou de ventilation (16) présente une forme s'étendant dans la direction axiale de l'enceinte de capteur (14).
(JA)
本発明は、気体濃度の測定を高精度で行うことを目的とする。気体センサ(10)は、センサ筐体(14)と、センサ筐体(14)の一端に設けられた超音波振動子(30)と、センサ筐体(14)の他端に設けられ、センサ筐体(14)の軸方向に対して交わる超音波反射面(44)と、センサ筐体(14)の側壁に設けられた複数の通気孔(16)とを備えている。複数の通気孔(16)は、センサ筐体(14)の側面側から見て、センサ筐体(14)の一方側から他方側を見通せない位置に設けられており、各通気孔(16)は、センサ筐体(14)の軸方向に延伸する形状を有している。
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