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Title:
ENVIRONMENT DETECTION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2018/101217
Kind Code:
A1
Abstract:
Provided is an environment detection apparatus that is capable of detecting an ambient environment, regarding a temperature and the like, irrespective of frequency sweeping. An environment detection apparatus 1 is provided with: a first coil L1 and a second coil L2 that are magnetically joined to each other; a Schmitt trigger inverter 10 that is connected to the first coil L1; and a thermistor Rs that is connected to the second coil L2 and in which the impedance changes depending on the temperature, and the environment detection apparatus oscillates at a frequency which changes according to the impedance of the thermistor Rs. A primary side circuit 5 that includes the first coil L1 and a secondary side circuit 7 that includes the second coil L2 are separately arranged in a first space and a second space partitioned from each other by a partition member 12.

Inventors:
KAMI, Masafumi (3-9-1 Shibaur, Minato-ku Tokyo 23, 〒1080023, JP)
KASAJIMA, Tamon (3-9-1 Shibaur, Minato-ku Tokyo 23, 〒1080023, JP)
TANABE, Kei (3-9-1 Shibaur, Minato-ku Tokyo 23, 〒1080023, JP)
KOBAYASHI, Hiroshi (3-9-1 Shibaur, Minato-ku Tokyo 23, 〒1080023, JP)
HATA, Tetsuo (3-9-1 Shibaur, Minato-ku Tokyo 23, 〒1080023, JP)
Application Number:
JP2017/042453
Publication Date:
June 07, 2018
Filing Date:
November 27, 2017
Export Citation:
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Assignee:
TDK CORPORATION (3-9-1, Shibaura Minato-ku Tokyo, 23, 〒1080023, JP)
International Classes:
G01D21/00; G01K1/02; G01L9/00; G01N27/02
Domestic Patent References:
WO2013108803A12013-07-25
Foreign References:
JP2001281070A2001-10-10
JPH05344926A1993-12-27
JPH03289524A1991-12-19
JPH04212611A1992-08-04
Attorney, Agent or Firm:
MURAI, Takashi et al. (Syuwa 2nd Nanpeidai Residence 1102, 12-13 Nanpeidai-cho, Shibuya-k, Tokyo 36, 〒1500036, JP)
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