公开(公告)号：US20250113788A1

公开(公告)日：2025-04-10

申请号：US18982387

申请日：2024-12-16

Applicant: DENSO CORPORATION

Inventor： Naoya USHIGOME ,  Yusuke HIRONO ,  Naohisa NIIMI ,  Norihiro KURUMADO

IPC: A01G25/16

Abstract: A watering system includes a pF sensor, a VWC sensor, and a control device that controls an irrigation operation. The control device controls the irrigation using the pF value detected by the pF sensor and the volume water content detected by the VWC sensor. The control device controls a start timing of the irrigation operation based on the pF value that is detected and a start threshold value. The control device controls a stop timing of the irrigation operation, which is in operation, based on the volume water content that is detected and a stop threshold value. The control device updates the stop threshold value based on fluctuation of the pF value that is detected.

公开(公告)号：US20250093282A1

公开(公告)日：2025-03-20

申请号：US18968547

申请日：2024-12-04

Applicant: DENSO CORPORATION

Inventor： Minekazu SAKAI ,  Naohisa NIIMI ,  Norihiro KURUMADO ,  Tomohide ARIKI ,  Kei SHIMAKURA ,  Keita NAMBARA ,  Masashi SUZUKI ,  Hidetada KAJINO ,  Naoki HASHIMOTO

IPC: G01N22/04 ,  G01N33/24

Abstract: A soil sensor includes a first signal line transmitting a high-frequency electromagnetic wave, and a porous body having a water permeability and a water retention property. The soil sensor further includes a second signal line transmitting a low-frequency electromagnetic wave and facing soil through the porous body, and a ground line arranged on an inside of the first signal line. The second signal line is arranged on an inside of the first signal line and the ground line. Thus, the first signal line and the second signal line are prevented from causing an influence to each other by an electric field generated by one of the two lines.

公开(公告)号：US20240415081A1

公开(公告)日：2024-12-19

申请号：US18815572

申请日：2024-08-26

Applicant: DENSO CORPORATION

Inventor： Yusuke HIRONO ,  Naohisa NIIMI ,  Norihiro KURUMADO

IPC: A01G25/16 ,  F17D5/06

Abstract: A first water supply valve controls a pressure of water supplied from one end portion side of a distribution tube to control an amount of irrigation water. A second water supply valve controls a pressure of water supplied from another end portion side of the distribution tube to control an amount of irrigation water. A first abnormality sensor detects an abnormal state of water supply from the one end portion side of the distribution tube. A second abnormality sensor detects an abnormal state of water supply from the other end portion side of the distribution tube. A control device controls a valve opening degree of the first water supply valve and the second water supply valve when an abnormal state is detected by the first abnormality sensor or the second abnormality sensor.

公开(公告)号：US20250134118A1

公开(公告)日：2025-05-01

申请号：US19010738

申请日：2025-01-06

Applicant: DENSO CORPORATION

Inventor： Naohisa NIIMI ,  Minekazu SAKAI ,  Norihiro KURUMADO ,  Tomohide ARIKI

IPC: A23B2/53 ,  A23B2/00 ,  A23B2/704

Abstract: A freshness maintenance system includes a freshness detection unit that detects the freshness of an agricultural product by detecting ethylene gas, and a maturation suppression unit that irradiates light having a sterilizing effect or generates an electromagnetic wave. A processing unit of the freshness maintenance system controls the maturation suppression unit based on the freshness detected by the freshness detection unit to suppress the freshness of the agricultural product.