Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PIEZOELECTRIC VIBRATION SENSOR
Document Type and Number:
WIPO Patent Application WO/2013/027736
Kind Code:
A1
Abstract:
A piezoelectric vibration sensor (1) is configured of a piezoelectric vibrator (2), a base (3), a potential difference measuring means (4), and a calculating means (5). The piezoelectric vibrator (2) is configured of a piezoelectric ceramic board (6), and a first electrode (7), a second electrode (8), a third electrode, and a fourth electrode, said electrodes being disposed on the front and rear surfaces of the piezoelectric ceramic board (6). The first electrode (7) and the second electrode (8) are disposed parallel to each other on the front surface of the piezoelectric ceramic board (6), and the third electrode and the fourth electrode are disposed on the rear surface of the piezoelectric ceramic board (6), said third electrode and the fourth electrode being disposed exactly at the rear of the first electrode (7) and the second electrode (8).

Inventors:
TAKAHASHI Masatake (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
高橋 尚武 (〒01 東京都港区芝五丁目7番1号 日本電気株式会社内 Tokyo, 〒1088001, JP)
SHINODA Shigeki (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
篠田 茂樹 (〒01 東京都港区芝五丁目7番1号 日本電気株式会社内 Tokyo, 〒1088001, JP)
TAKATA Soichiro (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
Application Number:
JP2012/071099
Publication Date:
February 28, 2013
Filing Date:
August 21, 2012
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NEC CORPORATION (7-1 Shiba 5-chome, Minato-ku Tokyo, 01, 〒1088001, JP)
日本電気株式会社 (〒01 東京都港区芝五丁目7番1号 Tokyo, 〒1088001, JP)
TAKAHASHI Masatake (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
高橋 尚武 (〒01 東京都港区芝五丁目7番1号 日本電気株式会社内 Tokyo, 〒1088001, JP)
SHINODA Shigeki (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
篠田 茂樹 (〒01 東京都港区芝五丁目7番1号 日本電気株式会社内 Tokyo, 〒1088001, JP)
International Classes:
G01H11/08; G01L1/16; G01P15/09; H01L41/08; H01L41/187
Foreign References:
JPH11230980A
JPH0954112A
JPH05188081A
JPH0526744A
JPS6246266A
Attorney, Agent or Firm:
KIMURA Mitsuru (2nd Floor, Kyohan Building 7, Kandanishiki-cho 2-chome, Chiyoda-k, Tokyo 54, 〒1010054, JP)
Download PDF:
Claims: