Scipediacontent: Scipediacontent moved page Draft Content 507311914 to Li Song 2015a

2021-02-15T11:07:27Z

Scipediacontent moved page Draft Content 507311914 to Li Song 2015a

Scipediacontent: Created page with " == Abstract == Liquid pressure is a key parameter for detecting and judging faults in hydraulic mechanisms, but traditional measurement methods have many deficiencies. An ef..."

2021-02-15T11:07:23Z

Created page with " == Abstract == Liquid pressure is a key parameter for detecting and judging faults in hydraulic mechanisms, but traditional measurement methods have many deficiencies. An ef..."

New page

== Abstract ==

Liquid pressure is a key parameter for detecting and judging faults in hydraulic mechanisms, but traditional measurement methods have many deficiencies. An effective non-intrusive method using an ultrasound-based technique to measure liquid pressure in small diameter (less than 15 mm) pipelines is presented in this paper. The proposed method is based on the principle that the transmission speed of an ultrasonic wave in a Kneser liquid correlates with liquid pressure. Liquid pressure was calculated using the variation of ultrasonic propagation time in a liquid under different pressures: 0 Pa and X Pa. In this research the time difference was obtained by an electrical processing approach and was accurately measured to the nanosecond level through a high-resolution time measurement module. Because installation differences and liquid temperatures could influence the measurement accuracy, a special type of circuit called automatic gain control (AGC) circuit and a new back propagation network (BPN) model accounting for liquid temperature were employed to improve the measurement results. The corresponding pressure values were finally obtained by utilizing the relationship between time difference, transient temperature and liquid pressure. An experimental pressure measurement platform was built and the experimental results confirm that the proposed method has good measurement accuracy.

Document type: Article

== Full document ==
<pdf>Media:Draft_Content_507311914-beopen922-5243-document.pdf</pdf>

== Original document ==

The different versions of the original document can be found in:

* [http://dx.doi.org/10.3390/s150408253 http://dx.doi.org/10.3390/s150408253] under the license https://creativecommons.org/licenses/by

* [http://europepmc.org/articles/PMC4431269 http://europepmc.org/articles/PMC4431269] under the license http://creativecommons.org/licenses/by/3.0/

* [https://dx.doi.org/10.3390/s150408253 https://dx.doi.org/10.3390/s150408253]

* [https://www.mdpi.com/1424-8220/15/4/8253/pdf https://www.mdpi.com/1424-8220/15/4/8253/pdf]

* [http://www.mdpi.com/1424-8220/15/4/8253 http://www.mdpi.com/1424-8220/15/4/8253],
: [https://doaj.org/toc/1424-8220 https://doaj.org/toc/1424-8220] under the license cc-by

* [http://www.mdpi.com/1424-8220/15/4/8253/pdf http://www.mdpi.com/1424-8220/15/4/8253/pdf],
: [http://dx.doi.org/10.3390/s150408253 http://dx.doi.org/10.3390/s150408253]

* [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4431269 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4431269],
: [https://www.mdpi.com/1424-8220/15/4/8253/pdf https://www.mdpi.com/1424-8220/15/4/8253/pdf],
: [https://www.mdpi.com/1424-8220/15/4/8253/htm https://www.mdpi.com/1424-8220/15/4/8253/htm],
: [https://dblp.uni-trier.de/db/journals/sensors/sensors15.html#LiS15 https://dblp.uni-trier.de/db/journals/sensors/sensors15.html#LiS15],
: [http://europepmc.org/articles/PMC4431269 http://europepmc.org/articles/PMC4431269],
: [https://doi.org/10.3390/s150408253 https://doi.org/10.3390/s150408253],
: [https://doaj.org/article/a87940d030fd405cb86716b8e971133e https://doaj.org/article/a87940d030fd405cb86716b8e971133e],
: [https://core.ac.uk/display/89893653 https://core.ac.uk/display/89893653],
: [https://academic.microsoft.com/#/detail/1982483566 https://academic.microsoft.com/#/detail/1982483566] under the license https://creativecommons.org/licenses/by/4.0/

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Li Song 2015a - Revision history

Scipediacontent: Scipediacontent moved page Draft Content 507311914 to Li Song 2015a

Scipediacontent: Created page with " == Abstract == Liquid pressure is a key parameter for detecting and judging faults in hydraulic mechanisms, but traditional measurement methods have many deficiencies. An ef..."