INDUCTIVE SENSOR CIRCUIT

The present invention relates to an inductive sensor circuit. The inductive sensor circuit according to one embodiment of the present invention for improving the response speed of a sensor comprises: a detection circuit unit comprising a condenser, which is connected in parallel to the inductor of the sensor and forms an oscillation circuit, a first operational amplifier for receiving as an input and amplifying the electrical signal of an oscillation waveform generated by the oscillation circuit, a filter unit for receiving as an input, rectifying, and smoothing the electrical signal amplified by the first operational amplifier, and a first control unit for converting into a first digital signal and outputting the electrical signal rectified and smoothed by the filter unit; a linearization circuit unit comprising a second control unit for receiving as an input an analogue signal measured by the micrometer of the sensor, converting same into a second digital signal, comparing the second digital signal with the first digital signal, and outputting a linearized data signal, a zero adjuster for adjusting the zero point of the data signal, and a span adjuster for adjusting the maximum value of the zero point; an output circuit unit comprising a third control unit for receiving as an input, converting into an analogue voltage signal, and outputting the data signal output by the second control unit, a second operational amplifier for reading and outputting the code of the voltage signal input by the third control unit, and a third operational amplifier for amplifying and transmitting to an external output terminal the voltage signal input by the second operational amplifier; and a power circuit unit for providing a constant voltage for circuit operation and supplying a reference voltage to an A/D converter embedded in the second control unit. La présente invention porte sur un circuit capteur inductif. Le circuit capteur inductif selon un mode de réalisation de la présente invention, destiné à améliorer la vitesse de réponse d'un capteur, comprend : une unité de circuit de détection comprenant un condensateur, qui est monté en parallèle à l'inductance du capteur et forme un circuit d'oscillation, un premier amplificateur opérationnel pour recevoir en tant qu'entrée et amplifier le signal électrique d'une forme d'onde d'oscillation générée par le circuit d'oscillation, une unité de filtre pour recevoir en tant qu'entrée, redresser et lisser le signal électrique am