Title:
PHYSICAL-QUANTITY DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/017301
Kind Code:
A1
Abstract:
In order to improve sensor characteristics and minimize variation in said characteristics, a pressure sensor is positioned upstream of a humidity sensor so as to help prevent water from contacting the humidity sensor and dust from adhering to the humidity sensor. This physical-quantity detection device 300 is characterized by having a detection unit 422 that detects humidity, a detection unit 421 that detects pressure, a circuit board 400 that has an electronic circuit that processes detection signals, and a housing 302 that accommodates the circuit board 400. The physical-quantity detection device 300 is also characterized in that the detection units 422, 421 are laid out on the surface of the circuit board 400 in a straight line in the direction in which a gas being measured flows, with the detection unit 421 that detects pressure positioned upstream of the detection unit 422 that detects humidity.
Inventors:
YOGO TAKAYUKI (JP)
HOSHIKA HIROAKI (JP)
MIKI TAKAHIRO (JP)
HOSHIKA HIROAKI (JP)
MIKI TAKAHIRO (JP)
Application Number:
PCT/JP2015/067114
Publication Date:
February 04, 2016
Filing Date:
June 15, 2015
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
G01F1/684; G01L23/24
Foreign References:
| JP2010043883A | 2010-02-25 | |||
| JP2006058137A | 2006-03-02 | |||
| US20140116122A1 | 2014-05-01 | |||
| JPS5920150U | 1984-02-07 | |||
| JP2006170803A | 2006-06-29 |
Other References:
See also references of EP 3176544A4
Attorney, Agent or Firm:
INOUE Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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