JPH0374780B2 - - Google Patents
Info
- Publication number
- JPH0374780B2 JPH0374780B2 JP5803284A JP5803284A JPH0374780B2 JP H0374780 B2 JPH0374780 B2 JP H0374780B2 JP 5803284 A JP5803284 A JP 5803284A JP 5803284 A JP5803284 A JP 5803284A JP H0374780 B2 JPH0374780 B2 JP H0374780B2
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric vibrator
- current
- frequency
- output
- voltage converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
- G01L9/0008—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations
- G01L9/0022—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations of a piezoelectric element
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5803284A JPS60201225A (ja) | 1984-03-26 | 1984-03-26 | 気体圧力計 |
DE8585301893T DE3583055D1 (de) | 1984-03-26 | 1985-03-19 | Druckmessgeraet, z.b. ein barometer. |
EP85301893A EP0157533B1 (en) | 1984-03-26 | 1985-03-19 | Pressure measuring apparatus, e.g. a barometer |
US06/715,496 US4597288A (en) | 1984-03-26 | 1985-03-25 | Barometer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5803284A JPS60201225A (ja) | 1984-03-26 | 1984-03-26 | 気体圧力計 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60201225A JPS60201225A (ja) | 1985-10-11 |
JPH0374780B2 true JPH0374780B2 (ko) | 1991-11-28 |
Family
ID=13072602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5803284A Granted JPS60201225A (ja) | 1984-03-26 | 1984-03-26 | 気体圧力計 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60201225A (ko) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6110735A (ja) * | 1984-06-25 | 1986-01-18 | Seiko Instr & Electronics Ltd | 気体圧力計 |
WO2013111785A1 (ja) * | 2012-01-23 | 2013-08-01 | 上田日本無線株式会社 | 動物の呼吸及び/又は心拍の変動を監視する方法 |
-
1984
- 1984-03-26 JP JP5803284A patent/JPS60201225A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS60201225A (ja) | 1985-10-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2121832C (en) | Multiple gas property sensor | |
JPH09170927A (ja) | 振動型角速度検出装置 | |
US5869971A (en) | Method and apparatus for ratiometric measurement of hematocrit | |
KR100189223B1 (ko) | 음차형 수정진동자를 사용한 압력의 측정방법 | |
US6348795B2 (en) | Crystal resonant frequency sensor | |
EP0157533B1 (en) | Pressure measuring apparatus, e.g. a barometer | |
JPH0374780B2 (ko) | ||
JP2000152674A (ja) | 超音波振動子の駆動装置 | |
JPS6110735A (ja) | 気体圧力計 | |
JP2648966B2 (ja) | 真空圧力計 | |
JPS63316509A (ja) | 発振回路 | |
JPH1123313A (ja) | センサ装置 | |
JPH0346572A (ja) | 静電容量測定回路 | |
JPS6063471A (ja) | 共振インピ−ダンス測定装置 | |
SU1539704A1 (ru) | Устройство дл измерени частоты собственных колебаний электродинамического или магнитоэлектрического преобразовател | |
JPS63145923A (ja) | 振動変位検出装置 | |
JPS60171428A (ja) | 気体圧力計 | |
JPH0219401B2 (ko) | ||
SU1185063A1 (ru) | Индуктивное измерительное устройство | |
JP2554526B2 (ja) | 圧力検出装置 | |
SU1219992A1 (ru) | Способ бесконтактного измерени магнитной проницаемости провод щего тела | |
JPH0569470B2 (ko) | ||
SU1659820A1 (ru) | Устройство дл измерени электрофизических параметров токопровод щих сред | |
SU1196775A1 (ru) | Устройство дл измерени переменного напр жени | |
SU1166022A1 (ru) | Устройство дл измерени электрических параметров пьезоэлектрических резонаторов |