ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
Menu

9
Issue
vol 63 / September, 2020
Article

DOI 10.17586/0021-3454-2020-63-9-813-822

UDC 681.2:621.826

STATIC AND FULL PRESSURE MEASUREMENT SYSTEM USING INITIAL SIGNAL SPLITTING AT THE SECONDARY CONVERTER INPUT

R. A. Borisov
Special Technology Center limited liability company“;


I. V. Antonets
Ulyanovsk Civil Aviation Institute, Department of Aviation Technique;


A. A. Chertoriyskiy
Ulyanovsk branch of the Federal budget institution of science V. A. Kotelnikov Institute of radio engineering and electronics of the Russian Academy of Sciences;


A. V. Krotov
Saint Petersburg state electrotechnical University "LETI“;


Abstract. Pressure sensors are widely used in aircraft to measure the static and full pressure of the oncoming air flow as a primary information in on-board air signal systems. In the data system, the measurement results are recalculation automatically to determine the flight altitude, speed, true air speed, Mach number, and vertical speed, according to well-known algorithms. A sensor of the full and static pressure with elastic membrane sensing element is presented. The membrane deformation is measured by an optical system, consisting of radiation source and position-sensitive photodetector based on the photo-detector line, installed opposite each other, with a curtain attached to the membrane center and placed between them. The membrane deformation displaces the optical spots formed on the photodetector surface by the passed through slits in the curtain. A novelty of the proposed sensor consists in the use of splitting of the initial information achieved by application of shutter with n slits forming n light spots on the photodetector, and these spots are displaced depending on the change in the measured pressure. Thanks to this innovation, it is possible to obtain n independent values of the measured pressure for one cycle of sensor line polling and to increase the measurement accuracy by averaging the results. The absence of additional elements on the curtains (emitters and light detector) improves the dynamic characteristics of the sensor. The proposed solution made it possible to minimize the influence of external disturbing factors (in particular, the aircraft vibrations) and to increase the accuracy and speed of the pressure sensor. Experiments carried out using a laboratory facility have confirmed the high level of the pressure sensor metrological performance.
Keywords: pressure sensor, line of photoelectronic receivers, sensor element, curtain with slits, optical spot

References:
  1. Fraden J. Handbook of Modern Sensors, NY, Springer, 2003.
  2. Auersvald J., Draxler K., Sipo M. Journal of Electrical engineering, 2019, no. 4(70), рр. 295–302.
  3. Auersvald J., Draxler K. International Conference on Military Technologies (ICMT), Brno, Czech Republic, 2015, рр. 1–6.
  4. Almazov V.V., Makarov N.N., Sorokin M.Yu. Izvestia of Samara Scientific Center of the Russian Academy of Sciences, 2017, no. 1(19), рр. 385–390. (in Russ.)
  5. Philippe J., de Paolis M.V., Arenas-Buendia C. et al. Sensors and Actuators A: Physical, Elsevier, 2018, рр. 753–762.
  6. Patent RU 2653596, G01L7/00, Datchik aerometricheskikh davleniy (Aerometric Pressure Sensor), Antonets I.V. Gorshkov G.M., Borisov R.A., Patent application no. 2017111362, Priority 04.04.2017. Published 11.05.2018, Bulletin 14. (in Russ.)
  7. Patent RU 2702808, G01L7/08, G01L11/02, Datchik aerometricheskikh davleniy (Aerometric Pressure Sensor), Antonets I.V., Borisov R.A., Gorshkov G.M., Patent application no. 2018131388, Priority 30.08.2018, Published 11.10.2019, Bulletin 29. (in Russ.)
  8. Patent RU 2684683, G01L7/08, G01L11/02, Datchik aerometricheskikh davleniy (Aerometric Pressure Sensor), Antonets I.V., Borisov R.A., Gorshkov G.M., Chertoriyskiy A.A., Patent application no. 2017139645, Priority 14.11.2017, Published 11.04.2019, Bulletin 11. (in Russ.)
  9. Patent RU 2712777, G01L7/02, G01L11/02, Datchik aerometricheskikh davleniy (Aerometric Pressure Sensor), Antonets I.V., Borisov R.A., Chertoriyskiy A.A., Patent application no. 2019114581, Priority 13.05.2019, Published 31.01.2020, Bulletin 4. (in Russ.)
  10. Lebedko E.G., Zvereva E.N., Nguyen Vu Tung, Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2015, no. 3(15), pp. 398–404. (in Russ.)
  11. Zvereva E.N., Lebedko E.G. Journal of Instrument Engineering, 2015, no. 7(58), pp. 555–560. (in Russ.)
  12. Zvereva E.N., Lebedko E.G., Tung V.T. Journal of Instrument Engineering, 2013, no. 11(56), pp. 7–10.
  13. Dereniak E.L., Crow D.G. Optical Radiation Detectors, NY, Wiley, 1984.
  14. Solomatin V.А. Journal of Instrument Engineering, 2010, no. 5(53), pp. 57–61. (in Russ.)
  15. Voronin A.A., Gerasimov V.A., Kostrin D.K. Biotechnosfera, 2013, no. 3(57), pp. 16–20. (in Russ.)
  16. Kostrin D.K., Ukhov А.А. Kontrol’. Diagnostika (Testing. Diagnostics), 2014, no. 2, pp. 65–68. (in Russ.)
  17. Ukhov А.А., Kostrin D.K. Proceedings of Saint Petersburg Electrotechnical University, 2013, no. 4, pp. 8–12.
  18. Kostrin D.K., Ukhov А.А. Datchiki & Systemi (Sensors & Systems), 2013, no. 5, pp. 13–15. (in Russ.)
  19. Nalimov V.V, Golikova T.I. Logicheskiye osnovy planirovaniya eksperimenta (Logical Foundations of Experiment Design), Moscow, 1980, 152 р. (in Russ.)
  20. Certificate on the state registration of the computer programs 2019612079, Programma upravleniya mikrokontrollerami semeystva STM32F4, obespechivayushchaya izmereniye lineynykh peremeshcheniy chuvstvitel'nykh elementov datchikov, ispol'zuyushchikh opticheskiye preobrazovateli (Control Program for Microcontrollers of the STM32F4 Family, Providing Measurement of Linear Displacements of Sensitive Elements of Sensors Using Optical Converters), Borisov R.A., Antonets I.V., Published 09.10.2019. (in Russ.)
  21. Akhmetova F.Kh., Laskovaya T.A., Chigirova O.Yu. Inzhenernyy vestnik, 2016, no. 4, pp. 1001–1011. (in Russ.)