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DETECTION DEVICE

Foreign code F170009233
File No. S2017-0383-N0
Posted date Sep 14, 2017
Country WIPO
International application number 2016JP057271
International publication number WO 2017033481
Date of international filing Mar 9, 2016
Date of international publication Mar 2, 2017
Priority data
  • P2015-163541 (Aug 21, 2015) JP
Title DETECTION DEVICE
Abstract A detection device (100) detects an elastic wave propagated via air. The detection device (100) is provided with: a plate-shaped first electrode (12) that has a cantilever structure having a fixed end (FX) and a free end (FR), and vibrates by being curved by the elastic wave; and a plate-shaped second electrode (32) that faces the first electrode (12) with a predetermined distance therebetween. The detection device (100) detects the elastic wave on the basis of a change in capacitance between the first electrode (12) and the second electrode (32). An end of the second electrode (32) in a direction from the fixed end (FX) to the free end (FR) is located closer to the fixed end (FX) side than the free end (FR).
Scope of claims [claim1]
1. Through the air, being the detection device which detects the elastic wave which is spread,
As it possesses the cantilever structure which possesses the fixed end and the free edge, the plate shaped 1st electrode which vibrates by curving with aforementioned elastic wave and,
As the plate shaped 2nd electrode which opposes across the aforementioned 1st electrode and specified distance and, it has, the aforementioned elastic wave is detected on the basis of the change of capacitance with the aforementioned 1st electrode and the aforementioned 2nd electrode,
From the aforementioned fixed end the description above in the direction which faces to the aforementioned free edge 2nd the edge of the electrode is located on the aforementioned fixed end side than the aforementioned free edge, the detection device.
[claim2]
2. Being the detection device of statement in claim 1,
1st electrode layer and,
As it touches with the aforementioned 1st electrode layer, the insulating layer which consists of the insulator and,
At opposite side to the aforementioned 1st electrode layer the 2nd electrode layer which touches with the aforementioned insulating layer and,
Having,
As for the aforementioned 1st electrode layer, the 1st support section which supports the aforementioned 1st electrode and the aforementioned 1st electrode and, implication,
As for the aforementioned 2nd electrode layer, the 2nd support section which supports the aforementioned 2nd electrode and the aforementioned 2nd electrode and, implication,
The aforementioned fixed end of the aforementioned 1st electrode connects with the aforementioned 1st support section,
As for part other than the aforementioned fixed end among edges of the aforementioned 1st electrode, with the aforementioned 1st support sections possessing specified gap,
As for the aforementioned insulating layer, at the part which opposes with the aforementioned 1st electrode among the aforementioned insulating layers possessing the 1st perforation hole which opens,
The description above 2nd electrode layer in the part where the description above 2nd the description above among electrode layers 1st opposes with the electrode, the description above 2nd at the part of the aforementioned free edge side than the electrode has the 2nd perforation hole which opens from the aforementioned fixed end in the direction which faces to the aforementioned free edge, the detection device.
[claim3]
3. Claim 1 or being the detection device of statement in claim 2,
The aforementioned 2nd electrode has the plural perforation holes, the detection device.
[claim4]
4. Claim 1 or either of claim 3 being the detection device of statement in one section,
The detector which includes the aforementioned 1st electrode and the aforementioned 2nd electrode and,
As it possesses the space which touches with the aforementioned detector inside, the substance which possesses opening which is communicated with aforementioned space and,
It has, the detection device.
[claim5]
5. Being the detection device of statement in claim 4,
Having the illuminant which forms light,
The description above itself, the description above it possesses the window which the light which is formed transmits, the detection device.
[claim6]
6. Being the detection device of statement in claim 5,
The aforementioned window is located on the same side as the aforementioned detector vis-a-vis the aforementioned space, the detection device.
[claim7]
7. Claim 5 or being the detection device of statement in claim 6,
As for the aforementioned space, the tube section which communicates with the base and the aforementioned base and the aforementioned opening and, implication,
The aforementioned tube section at least part extends alongside the straight line which ties with the aforementioned window and the aforementioned opening, the detection device.
[claim8]
8. Claim 4 or either of claim 7 being the detection device of statement in one section,
The description above itself, in the wall which forms the aforementioned space possessing the diaphragm which the vibration possibly is provided,
As for the aforementioned detection device,
At the same time, through the air, is spread as the elastic wave where zone of frequency of the detection possible elastic wave is wider than the aforementioned detector, 1st as a detector is detected, the 2nd detector which touches with the aforementioned space and,
The vibrating controller which controls the vibration of the aforementioned diaphragm on the basis of the result of the aforementioned detection by the aforementioned 2nd detector and,
It has, the detection device.
[claim9]
9. Claim 4 or either of claim 8 being the detection device of statement in one section,
The description above itself, resonance frequency of the Helmholtz resonance in the aforementioned space, has the form which matches the resonance frequency of the aforementioned 1st electrode, the detection device.
[claim10]
10. Claim 1 or either of claim 9 being the detection device of statement in one section,
The aforementioned 1st electrode and the aforementioned 2nd electrode are included, the plural detectors and,
The illuminant which forms light and,
The aforementioned plural detectors vis-a-vis respectively, after the aforementioned light being formed, until the aforementioned elastic wave is detected by the aforementioned detector, the processor which presumes the position of wave source of the aforementioned elastic wave on the basis of time, and,
It has, the detection device.
[claim11]
11. Claim 1 or either of claim 10 being the detection device of statement in one section,
The description above the position where the light which is formed is irradiated, it has the lighting controller which the plural positions which differ mutually control respectively, the detection device.
[claim12]
12. Claim 1 or either of claim 11 being the detection device of statement in one section,
Having the illuminant which forms the plural lights which possess the plural wave lengths which differ mutually respectively,
The plural elastic waves which are formed respectively due to the fact that the aforementioned plural lights are irradiated are detected, the elastic wave which is formed on the basis of the result of the aforementioned detection, by specified object ones is detected, the detection device.
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • TOHOKU UNIVERSITY
  • NIHON KOHDEN CORPORATION
  • Inventor
  • ONO TAKAHITO
  • ONO YOSHINOBU
IPC(International Patent Classification)
Specified countries (WO201733481)
National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS KE KG KN KP KR KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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