FI20165896L - Sensor - Google Patents
SensorInfo
- Publication number
- FI20165896L FI20165896L FI20165896A FI20165896A FI20165896L FI 20165896 L FI20165896 L FI 20165896L FI 20165896 A FI20165896 A FI 20165896A FI 20165896 A FI20165896 A FI 20165896A FI 20165896 L FI20165896 L FI 20165896L
- Authority
- FI
- Finland
- Prior art keywords
- sensor
- transducer
- sensitive element
- pressure sensitive
- impedance
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/0292—Electrostatic transducers, e.g. electret-type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H15/00—Measuring mechanical or acoustic impedance
-
- 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
- G01L9/0016—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations of a diaphragm
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/028—Analysing fluids by measuring mechanical or acoustic impedance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/032—Analysing fluids by measuring attenuation of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/036—Analysing fluids by measuring frequency or resonance of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/222—Constructional or flow details for analysing fluids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2406—Electrostatic or capacitive probes, e.g. electret or cMUT-probes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/32—Arrangements for suppressing undesired influences, e.g. temperature or pressure variations, compensating for signal noise
- G01N29/323—Arrangements for suppressing undesired influences, e.g. temperature or pressure variations, compensating for signal noise compensating for pressure or tension variations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02872—Pressure
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
A sensor (1) comprises an ultrasonic transducer (2) comprising a pressure sensitive element and a resonance cavity (6) arranged in connection with a transducer (2). The sensor (1) further comprises a measurement arrangement for measuring a change in an impedance of the transducer (2) in response to an effect of an external pressure affecting on the pressure sensitive element, and a compensation arrangement for compensating the effect of the external pressure affecting on the pressure sensitive element on the basis of the measured change in the impedance of the transducer (2). Also a method for operating the sensor (1).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20165896A FI20165896A (en) | 2016-11-24 | 2016-11-24 | Sensor |
PCT/FI2017/050822 WO2018096221A1 (en) | 2016-11-24 | 2017-11-24 | Sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20165896A FI20165896A (en) | 2016-11-24 | 2016-11-24 | Sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
FI20165896L true FI20165896L (en) | 2018-05-25 |
FI20165896A FI20165896A (en) | 2018-05-25 |
Family
ID=60574630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI20165896A FI20165896A (en) | 2016-11-24 | 2016-11-24 | Sensor |
Country Status (2)
Country | Link |
---|---|
FI (1) | FI20165896A (en) |
WO (1) | WO2018096221A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI20225947A1 (en) * | 2022-10-19 | 2023-09-22 | Teknologian Tutkimuskeskus Vtt Oy | Ultrasound sensor arrangement, apparatus and method of transmitting of ultrasound |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI20041344A (en) * | 2004-10-15 | 2006-04-16 | Valtion Teknillinen | Sensor and method for measuring a quantity applied to a component |
FI20075879A0 (en) | 2007-12-05 | 2007-12-05 | Valtion Teknillinen | Apparatus for measuring pressure, variation in sound pressure, magnetic field, acceleration, vibration and gas composition |
FI20106360A (en) * | 2010-12-21 | 2012-06-22 | Teknologian Tutkimuskeskus Vtt Oy | Process for producing an ultrasonic sensor |
-
2016
- 2016-11-24 FI FI20165896A patent/FI20165896A/en not_active Application Discontinuation
-
2017
- 2017-11-24 WO PCT/FI2017/050822 patent/WO2018096221A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2018096221A1 (en) | 2018-05-31 |
FI20165896A (en) | 2018-05-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD | Application lapsed |