FORCE MEASURING DEVICE Russian patent published in 2002 - IPC

FIELD: measurement technology. SUBSTANCE: proposed device has piezoelectric element 12 with three plates 5, 6, 7, elements 10, 11 to transmit measured force, two electric oscillators 1, 2 two inductance coils 8, 9, relay-type phase detector 3 and counter cluster 4. Inductance coils 8, 9 are connected to two plates 5, 6 of piezoelectric element 12 and to two inputs of electric oscillators 1, 2. Other inputs of said oscillators are connected to third plate 7 of piezoelectric element. Outputs of electric oscillators 1, 2 are connected to inputs of relay-type phase detector 3. Enable input of counter cluster 4 is connected to output of railway-type phase detector, and complementing input is connected to output of one of electric oscillators. EFFECT: improved stability of force measurements. 1 dwg