DEVICE FOR REMOTE PRESSURE MEASUREMENT

摘要

FIELD: instrument making.SUBSTANCE: invention relates to instrumentation and can be used in systems of remote acquisition of data on pressure in various industrial branches. Proposed device comprises scanner and transceiver. Said scanner comprises master oscillator, power amplifier, duplexer with I/O connected with transceiver antenna, phase detector with second input connected with first output of narrowband filter and registration unit with second input connected via phase meter with second outputs of master oscillator and narrowband filter. Transceiver is composed of multitapped delay line for surface acoustic waves. It includes interdigital transducer composed by two systems of comb electrodes applied on the surface of acoustic line. Comb electrodes are connected via buses connected with microstrip transceiver antenna. Thin membrane and reflection grating are arranged in acoustic line. Scanner incorporates multiplier. Multiplier is connected to duplexer output.EFFECT: higher accuracy of measurements.2 dwg