|Table of Contents|

Digital measurement system for cryogenic liquid level(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2017年03期
Page:
79-82
Research Field:
测控与实验
Publishing date:

Info

Title:
Digital measurement system for cryogenic liquid level
Author(s):
DUAN Wenhao;  ZHANG Jia;  WANG Hongyue
Beijing Institute of Aerospace Testing Technology, Beijing 100074, China
Keywords:
engine test;  cryogenic propellant;  liquid level measurement;  digitization measuring system
PACS:
V434+.3-34
DOI:
-
Abstract:
In liquid rocket engine test, steady-state flow rate of cryogenic propellants (such as liquid hydrogen, liquid oxygen, liquid methane, etc.) is an important parameter of the engine design. Currently, the flow measurement system consists of self-developed sub-section capacitive liquid level gauge, matching capacitance meter, acquisition equipment and computers. It can implement high-precision steady-state flow measurement and real-time liquid level monitoring in altitude simulation test and calibration test of a hydrogen oxygen engine. In order to improve accuracy and reliability of capacitive liquidometer, the performance of transmission instruments was improved and the FPGA-based digital liquidometer was developed, so that a complete set of solutions could be constituted by only the section level sensor, digital level measuring instruments and computers to achieve intelligentization and digitization of the instrument.

References:

[1]马礼耀. 汤维维. 高精度分节式电容液位计[J]. 制冷学报(试刊), 1978: 23-28.
[2]马礼耀, 汤维维, 张清玉. 低温流量测量系统[J]. 低温工程, 1983 (3): 11-15.
[3]耿卫国. 高精度稳态质量流量、液位自动测量系统[J]. 低温工程, 2001 (1): 6-10.
[4]黄伟, 吴伯枚. 分节式电容液面计[J]. 低温物理, 1982, 4(1): 31-34.
[5]张春生, 苏开友, 等. FPGA数字信号处理与工程应用实践[M]. 北京: 中国铁道出版社, 2013.
[6]杨乐平, 李海涛. LabVIEW高级程序设计[M]. 北京: 清华大学出版社，2003.
[7]夏宇闻. Verilog数字系统设计教程[M]. 2版. 北京: 北京航空航天大学出版社, 2008.
[8]陈学英, 李颖. FPGA应用实验教程[M]. 北京: 国防工业出版社, 2013.
[9]林英撑, 童晓华, 刘向宇. FPGA嵌入式系统设计与开发指南[M]. 北京: 中国电力出版社, 2012.

Memo

Memo:
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Last Update: 1900-01-01