Back to results
US 11,713,982 B2Granted
Proximity sensor and method of use
AssigneeSimmonds Precision Products, Inc.
InventorScott R. Durkee
Life of this patent
Estimating the term…
Abstract
A method of measuring target proximity comprising the steps of transmitting a magnetic field signal by a controller of a proximity sensor at a target, measuring impedance of an inductor of a proximity sensor, calculating a relative position of the target in relation to a sensor face, and providing a near/far output status of the target at a predetermined rate.
Claims13
A method of remotely measuring a position of a target comprising the steps of:
- transmitting, with a controller of a proximity sensor, a magnetic field signal at the target;
- measuring impedance of an inductor of the proximity sensor;
- calculating a relative position of the target in relation to a face of the proximity sensor;
- and
- providing a near/far output status of the target at a predetermined rate,
- wherein calculating a relative position is based on the equation Rref[(Vsensor,t1 *t2)−(Vsensor,t2 *t1)]/(Vref,t2−Vref,t1) where Rref is a resistance of a reference resistor, Vsensor,t1 is voltage across the inductor at a first instance, Vsensor,t2 is voltage across the inductor at a second instance, t1 is a first instance, t2 is a second instance, Vref,t2 is a voltage across the reference resistor at a second instance, and Vref,t1 is a voltage across the reference resistor at a first instance.
3 more elements
A proximity sensor comprising:
- a sensor face;
- sensor electronics within the sensor face configured to transmit a magnetic field signal at a target, wherein the sensor electronics include at least one reference resistor and at least one inductor sensor operatively connected in parallel;
- and
- a controller configured to control the magnetic field signal,
- wherein calculating a relative position is based on the equation Rref[(Vsensor,t1 *t2)−(Vsensor,t2 *t1)]/(Vref,t2−Vref,t1) where Rref is the resistance of the reference resistor, Vsensor,t1 is voltage across the inductor at a first instance, Vsensor,t2 is voltage across the inductor at a second instance, t1 is a first instance, t2 is a second instance, Vref,t2 is a voltage across the reference resistor at a second instance, and Vref,t1 is a voltage across the reference resistor at a first instance.
2 more elements
Dependencies are inferred from the claim text.