Unlock instant, AI-driven research and patent intelligence for your innovation.

Device for measuring a fluid meniscus

一种弯月面、流体的技术，应用在测量装置、电容测量、电磁测量装置等方向，能够解决不太适合流体弯月面几何形状等问题

Active Publication Date: 2011-09-28
KONINK PHILIPS ELECTRONICS NV
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technique disclosed in WO2006 / 035407A1 is not well suited for generating specific geometries of fluid menisci, such as a sloped flat meniscus or a symmetrical concave or convex shape

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device for measuring a fluid meniscus
  • Device for measuring a fluid meniscus
  • Device for measuring a fluid meniscus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] exist Figure 1A , Figure 1B with figure 2 A first embodiment of a device according to the invention is depicted in . Figure 1Adepicts a cross-sectional view and a bottom view of the device 102, while Figure 1B A bottom view of the device is shown. Apparatus 102 includes a fluid chamber 104 having a bottom 106 and walls including wall portions 108, 110, 112 and 114, see also Figure 1B . Walls 108, 110, 112 and 114 are provided with an insulating layer 116 for protection against short circuits, see Figure 1A . In alternative embodiments, the fluid cavity may have conical or cylindrical walls, or any other suitable walls. Apparatus 102 also includes: primary electrowetting electrode 118, which in this particular embodiment is attached to base 106; and auxiliary electrowetting electrodes 120, 122, 124, and 126, see Figure 1B , the auxiliary electrowetting electrodes partially surround fluid cavity 104 and are attached to wall portions 108 , 110 , 112 and 114 , ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a device (102) arranged for measuring a geometry of a fluid meniscus (132). The device comprises a fluid chamber (104) storing a first electrically conductive fluid (128) and a second electrically insulating fluid (324). The fluids are mutually immiscible and define a fluid meniscus (132) in between them. Furthermore a main electrowetting electrode (118) and auxiliary electrowetting electrodes (120, 122, 124, 126) are provided for controlling the geometry of the fluid meniscus. Hereto a voltage source (134) for providing a voltage between the main electrowetting electrode and the auxiliary electrowetting electrodes is comprised, as well as a measurement circuit (144) for separately measuring capacitances between the main electrowetting electrode and at least two of the auxiliary electrowetting electrodes. For this purpose the measurement circuit comprises a multiplexer for demodulating a signal indicative for said capacitances. The invention further relates to a method for measuring a fluid meniscus.

Description

technical field [0001] The invention relates to a device for measuring the geometry of a fluid meniscus. [0002] The invention also relates to a catheter comprising such a device. [0003] The invention also relates to a method for measuring the geometry of a fluid. Background technique [0004] A controllable optical lens system is disclosed in WO2006 / 035407A1. The system includes a lens having a cavity containing first and second fluids, wherein an interface between the fluids defines a lens surface. The system also includes: an electrode arrangement comprising a first electrode and a second electrode for electrically controlling the shape of the lens surface; a feedback control loop for controlling the electrode arrangement based on a signal provided by a capacitance sensing device for use with for measuring the capacitance between the first and second electrodes. [0005] The technique disclosed in WO2006 / 035407A1 is not well suited for generating specific geometrie...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/00G02B3/14
CPCG02B26/005G01B7/28G01R27/2605
Inventor B.M.德博尔T.J.德胡格T.P.H.G.延森
Owner KONINK PHILIPS ELECTRONICS NV