Abstract: Disclosed are a soil monitoring sensor and a method of operating the same. The soil monitoring sensor includes a first probe formed to extend in a first direction, and including a first electrode and a second electrode; a first resonance circuit connected to the first electrode and the second electrode of the first probe, and configured such that a first AC signal is applied thereto; a second resonance circuit having the same impedance as the first resonance circuit, and configured such that a second AC signal is applied thereto; and a determination circuit configured to receive a first electrical signal formed in the first resonance circuit, to receive a second electrical signal formed in the second resonance circuit, and to generate a first determination value for the state of the soil based on the first resonant frequency and the second resonant frequency.

Abstract: Disclosed herein are a soil moisture sensor and an operating method thereof. The soil moisture sensor includes a first probe including a pair of first electrodes extending in a first direction; a first resonance circuit connected to the pair of first electrodes of the first probe through a pair of first ports, and configured such that a first AC signal is applied thereto; a second resonance circuit having the same impedance as the first resonance circuit, and configured such that a second AC signal having the same characteristics as the first AC signal while being a reference AC signal is applied thereto; and a determination circuit configured to receive a first electrical signal and a second electrical signal and to determine the moisture in the soil based on the first resonant frequency of the first electrical signal and the second resonant frequency of the second electrical signal.

Abstract: Disclosed herein are a hybrid sensor and a method of operating the same. The hybrid sensor includes: a first sensing element located on the outer side of the hybrid sensor; a second sensing element disposed to face the first sensing element; a deformable intermediate part disposed between the first sensing element and the second sensing element; a first resonant circuit electrically connected to the second sensing element; a second resonant circuit; and a detection circuit configured to receive a first electrical signal formed in the first resonant circuit and the second sensing element, and a second electrical signal formed in the second resonant circuit. The detection circuit generates sensing information. It is determined whether the sensing information is caused based on the displacement of the first sensing element attributable to a user motion.

Abstract: An inductive force sensor includes a reference resonance circuit, a first resonance circuit, and a determination circuit configured to obtain information about a first resonant frequency, attributable to first inductance due to an inductive coil based on the displacement between a target and the inductive coil formed by an external force input in a Z-axis direction, and a reference resonant frequency. The determination circuit determines the displacement of the target and the external force in the Z-axis direction based on the first resonant frequency and the reference resonant frequency.

Abstract: A touch force sensor includes a reference resonant circuit, a first resonant circuit coupled to an inductive coil, a second resonant circuit connected to a touch electrode, and further includes a determination circuit configured to obtain a first resonant frequency attributable to a first inductance formed in an inductive coil and a first resonant circuit based on a displacement between a target and the inductive coil formed by an external force input in a Z-axis direction, the second resonant frequency of a second resonant circuit attributable to a capacitance varying depending on whether a finger comes into contact with the touch electrode, and information about a reference resonant frequency.

Abstract: Disclosed are a single-channel multi-region motion sensor and a method of operating the same. The single-channel multi-region motion includes: a first resonant circuit; at least one first electrode electrically connected to the first resonant circuit; a second resonant circuit; at least one second electrode electrically connected to the second resonant circuit; and a detection circuit configured to receive a first electric signal formed on the first resonant circuit and the at least one first electrode and a second electric signal formed on the second resonant circuit and the at least one second electrode. The detection circuit detects a difference between the first resonant frequency of the first electric signal and the second resonant frequency of the second electric signal, and detects the proximity of a conductor or the location of a touch attributable to a user motion.