Title:
人体検知センサ及び便座装置
Document Type and Number:
Japanese Patent JP7343838
Kind Code:
B2
Abstract:
To provide a human body detection sensor and a toilet seat device that can suppress influence of environmental noise while suppressing increase of cost.SOLUTION: The human body detection sensor includes: a detection electrode of which capacitance is changed according to the presence or absence of a human body; and a detection circuit electrically connected to the detection electrode, the detection circuit detecting a change of the capacitance of the detection electrode by sending a pulse signal with a predetermined frequency to the detection electrode. The detection circuit can send a plurality of pulse signals with different frequencies to the detection electrode, and detects the capacitance at predetermined intervals and sends the plurality of pulse signals to the detection electrode at the predetermined cycles so that the pulse signals circulate in a predetermined sequence.SELECTED DRAWING: Figure 1
Inventors:
Yoshiyuki Kaneko
Yasuhiro Matsuda
Yasuhiro Matsuda
Application Number:
JP2019194304A
Publication Date:
September 13, 2023
Filing Date:
October 25, 2019
Export Citation:
Assignee:
TOTO Ltd.
International Classes:
G01V3/08; A47K13/24; A47K13/30; E03D9/08
Domestic Patent References:
| JP2006211427A | ||||
| JP2008008831A | ||||
| JP5196744A | ||||
| JP2009287993A | ||||
| JP2007232711A | ||||
| JP2008275428A | ||||
| JP2003504624A | ||||
| JP2009544938A |
Attorney, Agent or Firm:
Masahiko Hyugaji
Junichi Kozaki
Hiroshi Ichikawa
Tatsuaki Shirai
Takato Uchida
Isao Takeuchi
Kohei Hoshino
Junichi Kozaki
Hiroshi Ichikawa
Tatsuaki Shirai
Takato Uchida
Isao Takeuchi
Kohei Hoshino