Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for operating a capacitive pressure measurement cell, and a capacitive pressure measurement device

A measuring device and measuring unit technology, applied in fluid pressure measurement using capacitance change, measuring device, measuring fluid pressure through electromagnetic elements, etc.

Active Publication Date: 2020-12-11
IMF ELECTRONIC GMBH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, it may be the case that in the environment in which the pressure measurement device is used, there are other sources of various types, for example, if the measurement device is operated near a frequency converter, so that the frequency of the external signal source will be coupled , which can cause resonance with the fixed operating frequency or operating frequency of the pressure measurement device

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
  • Method for operating a capacitive pressure measurement cell, and a capacitive pressure measurement device
  • Method for operating a capacitive pressure measurement cell, and a capacitive pressure measurement device
  • Method for operating a capacitive pressure measurement cell, and a capacitive pressure measurement device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] In the following description of the preferred embodiment, the same reference numerals designate the same or similar parts.

[0021] exist figure 1 A block diagram of a typical capacitive pressure measurement device for measuring process pressure p (eg of oil, milk, water, etc.) is shown in . The pressure measuring device 1 is implemented as a two-wire device , and essentially consists of a pressure measurement unit 10 and computing electronics 20 . Computing electronics 20 has an analog computing circuit 30 and a microcontroller μC. In the microcontroller μC, the analog output signals of the computing circuit 20 are digitized and further processed. The microcontroller μC provides the calculation result as a digital or analog output signal to eg the SPS. To supply energy, the pressure measuring device 1 is switched to a voltage supply line (12V-36V).

[0022] figure 2 A typical capacitive pressure measuring cell 10 is shown in schematic form, which can be used in...

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 method for operating a capacitive pressure measurement device. In order to achieve an insensitivity to external signal sources, the invention proposes continuously varying the working frequency of the pressure measurement device so that a resonance formation with externally injected (interfering) frequencies is avoided.

Description

technical field [0001] The invention relates to a method for operating a capacitive pressure measuring cell according to claim 1 and a method for operating a capacitive pressure measuring device according to claim 3 . Background technique [0002] Capacitive pressure sensors or capacitive pressure measuring devices are used for pressure measurement in many industrial fields. They usually have a ceramic pressure measuring cell as a sensor for the process pressure and computing electronics for signal processing. [0003] The capacitive pressure measuring cell consists of a ceramic base body and a membrane, between which a glass welding ring is arranged. The cavity thus formed between the base body and the membrane enables a longitudinal displaceability of the membrane due to the influence of pressure. Electrodes are arranged on the lower side of the membrane and on the opposite upper side of the main body, which together form a measuring capacitor. The effect of pressure ca...

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
IPC IPC(8): G01L9/00G01L9/12G01L19/06
CPCG01L9/0072G01L9/12G01L19/069
Inventor 海因茨·瓦尔特曼弗雷德·毛鲁斯彼得·金贝尔亚历山大·奥佩
Owner IMF ELECTRONIC GMBH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com