公开(公告)号：US20200225190A1

公开(公告)日：2020-07-16

申请号：US16650404

申请日：2019-01-30

申请人： Ball Wave Inc.

发明人： Kazushi YAMANAKA ,  Nobuo TAKEDA ,  Shingo AKAO ,  Toshihiro TSUJI ,  Toru OIZUMI ,  Hideyuki FUKUSHI ,  Tatsuhiro OKANO ,  Nagisa SATO ,  Yusuke TSUKAHARA

IPC分类号： G01N29/02 ,  G01N29/032 ,  G01N29/22 ,  G01N29/34 ,  G01N33/00

摘要： A collimated beam (23) of a surface acoustic wave propagates on a piezoelectric substrate (22) while passing through sensitive film (25) to adsorb a sensing gas. Signal processing unit (40) transmits an exciting burst signal to sensor electrode (24) to excite the collimated beam (23), receives first and second returned burst signals after the collimated beam (23) has propagated, and calculates a target gas parameter by a target leakage factor of the background gas and a relation between reference gas parameters and reference leakage factors of reference gases, the leakage factor is provided by first and second attenuations of the first and second returned burst signals, respectively, using waveform data of the first and second returned burst signals.

公开(公告)号：US20210372978A1

公开(公告)日：2021-12-02

申请号：US17397723

申请日：2021-08-09

申请人： Ball Wave Inc.

发明人： Takamitsu IWAYA ,  Shingo AKAO ,  Tatsuhiro OKANO ,  Nobuo TAKEDA ,  Toshihiro TSUJI ,  Toru OIZUMI ,  Hideyuki FUKUSHI ,  Maki SUGAWARA ,  Yusuke TSUKAHARA ,  Kazushi YAMANAKA

IPC分类号： G01N33/00

摘要： A system for calibrating a moisture sensor encompasses a processing unit (341). The processing unit (341) includes a reference data obtaining LCKT (345), a subject data obtaining LCKT (346) and a relationship calculating LCKT (347). The reference data obtaining LCKT (345) obtains reference data, after injecting water-vapor with known concentrations into an analyzer. The subject data obtaining LCKT (346) measures subject data indicating temporal variation of output-responses of a subject sensor element of the analyzer under test. The relationship calculating LCKT (347) compares the subject data with the reference data, and calculates relationships between the output-responses of the subject sensor element and the known concentrations.