Ueda Japan Radio Co., Ltd.

Japon

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2020 1
2019 2
2018 1
Classe IPC
G01N 29/024 - Analyse de fluides en mesurant la vitesse de propagation ou le temps de propagation des ondes acoustiques 4
G01M 3/24 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par détection de la présence du fluide à l'emplacement de la fuite en utilisant des vibrations infrasonores, sonores ou ultrasonores 2
G01N 29/22 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonores; Visualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet - Détails 1
G01N 29/44 - Traitement du signal de réponse détecté 1
G01N 29/50 - Traitement du signal de réponse détecté en utilisant des techniques d'autocorrélation ou des techniques d'intercorrélation 1
Résultats pour  brevets

1.

GAS SENSOR

      
Numéro de document 03124672
Statut En instance
Date de dépôt 2019-12-24
Date de disponibilité au public 2020-07-02
Propriétaire
  • NISSHINBO HOLDINGS INC. (Japon)
  • JAPAN RADIO CO., LTD. (Japon)
  • UEDA JAPAN RADIO CO., LTD. (Japon)
Inventeur(s)
  • Seo, Daisuke
  • Toriyama, Yasuhiro

Abrégé

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).

Classes IPC  ?

  • G01N 29/024 - Analyse de fluides en mesurant la vitesse de propagation ou le temps de propagation des ondes acoustiques
  • G01N 29/22 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonores; Visualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet - Détails

2.

PROPAGATION TIME MEASUREMENT MACHINE, GAS CONCENTRATION MEASUREMENT DEVICE, PROPAGATION TIME MEASUREMENT PROGRAM, AND PROPAGATION TIME MEASUREMENT METHOD

      
Numéro de document 03078380
Statut En instance
Date de dépôt 2018-09-28
Date de disponibilité au public 2019-04-11
Propriétaire
  • UEDA JAPAN RADIO CO., LTD. (Japon)
  • JAPAN RADIO CO., LTD. (Japon)
  • NISSHINBO HOLDINGS INC. (Japon)
Inventeur(s)
  • Tsujiya, Kouichi
  • Shinfuku, Yoshifumi
  • Toriyama, Yasuhiro

Abrégé

The purpose of the present invention is to improve the precision of measuring the propagation time of ultrasonic waves. A processor 28 serving as a computation unit is configured to include a correlation object determination unit 32 for establishing: a first to-be-correlated signal established on the basis of a first upper-limit rate of change, which is the rate of change of an upper-limit envelope of a direct wave signal, and a first lower-limit rate of change, which is the rate of change of a lower-limit envelope of the direct wave signal; and a second to-be-correlated signal established on the basis of a second upper-limit rate of change, which is the rate of change of an upper-limit envelope of a once-delayed wave signal, and a second lower-limit rate of change, which is the rate of change of a lower-limit envelope of the once-delayed wave signal. The processor 28 is also configured to include a correlation processing unit 34 for establishing a correlation value between the first to-be-correlated signal and a signal in which the second to-be-correlated signal is moved on a time axis. The correlation processing unit 34 functions as a propagation time measurement unit for establishing the time difference between the first to-be-correlated signal and the second to-be-correlated signal on the basis of the correlation value, and establishing the time for ultrasonic waves to propagate through a concentration measurement space on the basis of the time difference.

Classes IPC  ?

  • G01N 29/024 - Analyse de fluides en mesurant la vitesse de propagation ou le temps de propagation des ondes acoustiques
  • G01M 3/24 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par détection de la présence du fluide à l'emplacement de la fuite en utilisant des vibrations infrasonores, sonores ou ultrasonores
  • G01N 29/50 - Traitement du signal de réponse détecté en utilisant des techniques d'autocorrélation ou des techniques d'intercorrélation

3.

ULTRASONIC WAVE TRANSMITTER, PROPAGATION TIME MEASUREMENT DEVICE, GAS CONCENTRATION MEASUREMENT DEVICE, PROPAGATION TIME MEASUREMENT PROGRAM, AND PROPAGATION TIME MEASUREMENT METHOD

      
Numéro de document 03078342
Statut En instance
Date de dépôt 2018-09-28
Date de disponibilité au public 2019-04-11
Propriétaire
  • UEDA JAPAN RADIO CO., LTD. (Japon)
  • JAPAN RADIO CO., LTD. (Japon)
  • NISSHINBO HOLDINGS INC. (Japon)
Inventeur(s)
  • Tsujiya, Kouichi
  • Shinfuku, Yoshifumi
  • Toriyama, Yasuhiro

Abrégé

The purpose of the present invention is to improve the precision of measuring the propagation time of ultrasonic waves. A gas concentration measurement device comprises: a transmission circuit 38 and a transmission oscillator 16 for transmitting first ultrasonic waves in a concentration measurement space and also transmitting second ultrasonic waves, which continue temporally from the first ultrasonic waves in the concentration measurement space; a reception oscillator 18 and a reception circuit 40 for receiving the ultrasonic waves that have propagated through the concentration measurement space; and a propagation time measurement unit 32 for determining, on the basis of the timings at which the first ultrasonic waves and the second ultrasonic waves were transmitted and the timings at which the first ultrasonic waves and the second ultrasonic waves were received, the time in which ultrasonic waves propagate through the concentration measurement space. The second ultrasonic waves have an opposite phase with respect to that of the first ultrasonic waves, and the amplitude of the second ultrasonic waves is greater than that of the first ultrasonic waves.

Classes IPC  ?

  • G01N 29/024 - Analyse de fluides en mesurant la vitesse de propagation ou le temps de propagation des ondes acoustiques
  • G01M 3/24 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par détection de la présence du fluide à l'emplacement de la fuite en utilisant des vibrations infrasonores, sonores ou ultrasonores
  • G01N 29/44 - Traitement du signal de réponse détecté

4.

GAS CONCENTRATION MEASURING DEVICE AND METHOD OF CALIBRATING SAME

      
Numéro de document 03046170
Statut En instance
Date de dépôt 2017-12-18
Date de disponibilité au public 2018-06-28
Propriétaire
  • UEDA JAPAN RADIO CO., LTD. (Japon)
  • JAPAN RADIO CO., LTD. (Japon)
  • NISSHINBO HOLDINGS INC. (Japon)
Inventeur(s)
  • Sakaguchi, Osamu
  • Ito, Isao
  • Toriyama, Yasuhiro
  • Matsubayashi, Katsuyuki

Abrégé

The objective of the present invention is to improve the measuring accuracy of a gas concentration measuring device. A variable value calculating process includes: a step of measuring a propagation time of the propagation of an ultrasound wave through a measurement sector inside a housing 10; a step of obtaining a temperature calculated value on the basis of the measured value of the propagation time and a reference distance for the measurement sector; a step of obtaining a temperature measured value by measuring the temperature inside the housing 10; and a step of obtaining a temperature replacement fluctuation value indicating a difference between the temperature calculated value and the temperature measured value. The variable value calculating process is executed for each of a plurality of temperature conditions under which the temperature of a reference gas inside the housing 10 differs. A temperature compensation table in which the temperature of a gas to be measured is associated with a temperature compensation value relating to the temperature is obtained on the basis of the temperature replacement fluctuation values obtained under each temperature condition.

Classes IPC  ?

  • G01N 29/024 - Analyse de fluides en mesurant la vitesse de propagation ou le temps de propagation des ondes acoustiques