Title:
SOIL SENSOR
Document Type and Number:
WIPO Patent Application WO/2023/238695
Kind Code:
A1
Abstract:
A soil sensor (30) comprises: a first signal line (51) through which a high-frequency electromagnetic wave is transmitted; and a porous body part (60) having water permeability and water holding property. The soil sensor (30) comprises: a second signal line (61) through which a low-frequency electromagnetic wave is transmitted and which faces the soil via the porous body part; and ground lines (52, 62) that are disposed inward of the first signal line. The second signal line (61) is disposed inward of the first signal line (51) and the ground lines (52, 62) . This configuration makes it possible for the first signal line (51) and the second signal line (61) to inhibit an electric field formed by one of the lines from influencing the other signal line.
Inventors:
SAKAI MINEKAZU (JP)
NIIMI NAOHISA (JP)
KURUMADO NORIHIRO (JP)
ARIKI TOMOHIDE (JP)
SHIMAKURA KEI (JP)
NAMBARA KEITA (JP)
SUZUKI MASASHI (JP)
KAJINO HIDETADA (JP)
HASHIMOTO NAOKI (JP)
NIIMI NAOHISA (JP)
KURUMADO NORIHIRO (JP)
ARIKI TOMOHIDE (JP)
SHIMAKURA KEI (JP)
NAMBARA KEITA (JP)
SUZUKI MASASHI (JP)
KAJINO HIDETADA (JP)
HASHIMOTO NAOKI (JP)
Application Number:
PCT/JP2023/019595
Publication Date:
December 14, 2023
Filing Date:
May 26, 2023
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G01N22/00; G01N22/04; G01N27/02; G01N27/04; G01N27/416
Domestic Patent References:
| WO2022168757A1 | 2022-08-11 | |||
| WO2017221901A1 | 2017-12-28 |
Foreign References:
| GB2398637A | 2004-08-25 | |||
| CN1441250A | 2003-09-10 | |||
| CN110320248A | 2019-10-11 | |||
| CN105123447A | 2015-12-09 | |||
| CN108918822A | 2018-11-30 | |||
| US5418466A | 1995-05-23 | |||
| CN107064243A | 2017-08-18 | |||
| JP2002315456A | 2002-10-29 |
Other References:
LIN CHIH-PING: "Frequency Domain Versus Travel Time Analyses of TDR Waveforms for Soil Moisture Measurements", SOIL SCIENCE SOCIETY OF AMERICA. JOURNAL, SOIL SCIENCE SOCIETY OF AMERICA, US, vol. 67, no. 3, 1 May 2003 (2003-05-01), US , pages 720 - 729, XP093114717, ISSN: 0361-5995, DOI: 10.2136/sssaj2003.7200
GARDNER C.M.K., DEAN T.J., COOPER J.D.: "Soil Water Content Measurement with a High-Frequency Capacitance Sensor", JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH., ACADEMIC PRESS, LONDON., GB, vol. 71, no. 4, 1 December 1998 (1998-12-01), GB , pages 395 - 403, XP093114719, ISSN: 0021-8634, DOI: 10.1006/jaer.1998.0338
MORAIS FLÁVIO, CARVALHAES-DIAS PEDRO, ZHANG YU, CABOT ANDREU, FLOSI FÁBIO S., DUARTE LUIS CAPARROZ, DOS SANTOS ADELSON, DIAS JOSÉ : "Low-Cost Control and Measurement Circuit for the Implementation of Single Element Heat Dissipation Soil Water Matric Potential Sensor Based on a SnSe2 Thermosensitive Resistor", SENSORS, MDPI, CH, vol. 21, no. 4, 21 February 2021 (2021-02-21), CH , pages 1490, XP093114720, ISSN: 1424-8220, DOI: 10.3390/s21041490
GARDNER C.M.K., DEAN T.J., COOPER J.D.: "Soil Water Content Measurement with a High-Frequency Capacitance Sensor", JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH., ACADEMIC PRESS, LONDON., GB, vol. 71, no. 4, 1 December 1998 (1998-12-01), GB , pages 395 - 403, XP093114719, ISSN: 0021-8634, DOI: 10.1006/jaer.1998.0338
MORAIS FLÁVIO, CARVALHAES-DIAS PEDRO, ZHANG YU, CABOT ANDREU, FLOSI FÁBIO S., DUARTE LUIS CAPARROZ, DOS SANTOS ADELSON, DIAS JOSÉ : "Low-Cost Control and Measurement Circuit for the Implementation of Single Element Heat Dissipation Soil Water Matric Potential Sensor Based on a SnSe2 Thermosensitive Resistor", SENSORS, MDPI, CH, vol. 21, no. 4, 21 February 2021 (2021-02-21), CH , pages 1490, XP093114720, ISSN: 1424-8220, DOI: 10.3390/s21041490
Attorney, Agent or Firm:
YAHAGI Kazuyuki et al. (JP)
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