公开(公告)号：US20200149797A1

公开(公告)日：2020-05-14

申请号：US16740232

申请日：2020-01-10

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Seiji YAMAHIRA ,  Yuta MORIURA ,  Akihiro ODAGAWA ,  Kazuya NIKI ,  Shinobu MASUDA ,  Yui SAWADA ,  Keiji NOINE

IPC: F25D11/00 ,  G06N20/00 ,  G06K9/00

Abstract: A food management system that manages food items in a refrigerator includes: a pressure-sensitive sensor that acquires information including shapes, weights, and positions of the food items; a comparator that performs comparison of the information acquired at different times; and an identifier that identifies at least one of (i) fluctuations in the number of food items or (ii) presence or absence of the food items.

公开(公告)号：US20210318186A1

公开(公告)日：2021-10-14

申请号：US17043500

申请日：2019-01-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hironobu UKITSU ,  Yuta MORIURA ,  Hiroyuki FURUYA ,  Takashi MATSUMOTO ,  Yui SAWADA

IPC: G01L1/14

Abstract: A capacitance detection device includes a sensor unit including at least one sensor element whose capacitance changes, a control line applying to the sensor element a predetermined charging voltage for detecting the capacitance of the sensor element, a shield line electrically shielding the control line, a control circuit supplying the charging voltage to the sensor element via the control line, measuring a voltage change of the sensor element when the charging voltage is applied to the sensor element, and detecting the capacitance of the sensor element based on the voltage change, and an equipotential circuit setting a potential of the shield line equal to a potential of the control line.

公开(公告)号：US20210018379A1

公开(公告)日：2021-01-21

申请号：US17043622

申请日：2019-01-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hironobu UKITSU ,  Yuta MORIURA ,  Hiroyuki FURUYA ,  Takashi MATSUMOTO ,  Yui SAWADA

IPC: G01L1/14 ,  G01D5/24 ,  G01R27/26

Abstract: A capacitance detection device includes: a sensor unit including a plurality of sensor elements; row control lines; column control lines; a control circuit supplying a charging voltage to the sensor element; and an equipotential circuit outputting a potential equal to the potential of the sensor element subject to measurement. The control circuit applies a charging voltage to the row control line connected to the sensor element and connects the column control line connected to the sensor element to the ground potential side. The control circuit causes the equipotential circuit to set a potential of at least one of the row control lines other than the row control line connected to the sensor element subject to measurement and the column control lines other than the column control line connected to the sensor element subject to measurement to a potential equal to the potential of the sensor element subject to measurement.