MULTI-CHANNEL PRESSURE TRANSDUCER Russian patent published in 2024 - IPC G01L9/04 G01L15/00 G12B7/00 G01D3/28 G01K13/00 

FIELD: measurement technology; electronics.

SUBSTANCE: invention is used for multi-channel pressure measurements on the surface of aircraft models using a drainless method. The proposed multichannel pressure transducer contains strain gauge sensitive pressure elements, built on the basis of strain gauge measuring bridges, manufactured using surface micromechanics technology and mounted inside a thin flexible polyimide tape with holes in the tape located opposite each pressure sensitive element in one line in the centre of the tape, a pneumatic channel, combining the return cavities of the pressure sensitive elements, electrical power lines and lines of measuring diagonals of strain gauge measuring bridges laid inside the tape, a tape temperature sensor, a multi-channel analogue-to-digital converter, a microcontroller, a power supply voltage driver for the converter elements, a pneumatic channel fitting that combines the return cavities of the pressure sensitive elements installed on the mounting part of the tape.

EFFECT: ability to measure pressure distribution on the surface of models and full-scale aircraft samples using a drainless method; expansion of the frequency range of measured pressures; simplification of the circuit, design and reduction of dimensions of the pressure transducer.

3 cl, 1 dwg