FIELD: engineering of piezo-electric sensors meant for remotely controlling various physical values.
SUBSTANCE: sensor for remotely controlling physical value on surface acoustic waves contains hermetic body, located inside of which is piezo-electric sound guide, positioned on working surface of which are two oppositely-pinned transformer and acoustic absorber on ends, one of oppositely pinned transformers is one-directional and is loaded onto receiving-transmitting antenna, located outside the sealed body. Another oppositely-pinned transformer is made with foliated pins and loaded onto impedance, positioned outside sealed body, value of which depends on physical effect, value of which needs to be controlled.
EFFECT: increased reliability, possible mounting of sensor in hard to access place only once.
8 cl, 1 dwg
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