ANALOG INTERFACE FOR INFORMATION AND MEASURING SYSTEM WITH INDUCTIVE DISPLACEMENT PICKUPS

摘要

An analog interface for information and measuring system with inductive displacement pickups comprises a generator of test and control signals with antiphase outputs and instrument amplifier. Test output of generator is connected to inductive pickup, and control outputs through phase adjuster are connected to phase-sensitive rectifier which output is an output of analog interface. Input transmission links of instrument amplifier are connected to inductive pickup and output is connected to phase-sensitive rectifier. Additionally a differential multiplexor and current to voltage transducer are introduced. The instrument amplifier is made as transient voltage amplifier with output voltage proportional to input current, and antiphase outputs thereof are connected to inputs of differential multiplexor. The phase adjuster is made as digital multiplexor.