Systems and methods for storing fluid and sensing volume are described. In some embodiments, a system may include a container having an internal volume that is configured to change as fluid enters or exits the container, a first loop disposed on a first side of the container, and a second loop disposed on a second side of the container. A first current traveling through one of the first loop and the second loop may induce a second current in the other of the first loop and the second loop, and a magnitude of the second current may vary based on changes in the internal volume of the container.

An object is to provide a sensor capable of operating on a self-sustaining power source.

A sensor comprising a system, the system including: a first conductive part and a second conductive part; a medium; and a functional part, the first conductive part and the functional part being connected to each other, the second conductive part and the functional part being connected to each other, at least a part of the first conductive part and the second conductive part being in contact with the medium, and the first conductive part and the second conductive part being not in contact with each other, and the sensor being configured to detect that internal impedance of the system satisfies a predetermined condition.

There is disclosed a sensor system for determining a fluid level comprising a first sensor comprising a contact sensor a second sensor comprising a conductive sensor and a transducer configured to determine a water level based upon pressure placed on the transducer. There is also a microprocessor in communication with the first sensor, the second sensor and the transducer, the microprocessor configured to determine from at least one of the first sensor, the second sensor and the transducer, a fluid level in a container. In one embodiment the system further comprises a memory configured to feed values to the microprocessor, wherein the values comprise at least one of a high level fluid value and a low level fluid value. In one embodiment the microprocessor is configured to read pressure levels from the transducer wherein the pressure level of the transducer is configured to estimate a fluid level in a container.

Disclosed in various embodiments are an electronic device, the electronic device comprising: a power control circuit for controlling power supplied to at least one component of the electronic device; at least one submergence recognition circuit including a first pole connected to at least one port of the power control circuit, and a second pole connected to a ground; a processor electrically connected to the power control circuit; and a memory electrically connected to the processor, wherein the memory can be configured, during execution thereof, to store instructions for allowing the processor to: control the power control circuit such that power is supplied to the submergence recognition circuit; sense a current flowing from the submergence recognition circuit to the power control circuit; and determine, on the basis of the sensing result of the current, whether an area in which the submergence recognition circuit is arranged has been submerged.

A liquid level sensing system for a vehicle tank may include a liquid level display including a display panel and a first number of visual indicators carried by the display panel. The system may also include capacitive sensors to be coupled to the vehicle tank to sense a second number of possible liquid levels being greater than the first number of visual indicators. In addition, the system may include a controller configured to drive the visual indicators in a modulation pattern based upon the capacitive sensors to thereby display a sensed liquid level having a resolution corresponding to the second number of possible liquid levels.

A device for monitoring a liquid level of a liquid storage tank for a vehicle is capable of improving sensing sensitivity of a liquid level sensor by employing a structure capable of amplifying an electromotive force, which is generated by an electrode, at an electromotive force amplification layer including a carbon micro coil (CMC) and accurately sensing a frozen state of a liquid to perform a heating function so as to resolve the frozen state of the liquid.

The present invention relates to an apparatus and a method for detecting a water level, which are capable of generating a water level detection signal which is alternating current output to a water level detection sensor by using two direct current control signals alternately output from a micom.

An example of an apparatus is provided. The apparatus includes a current source. The apparatus includes a conductor in electrical communication with the current source and a conductive fluid in a reservoir. The apparatus includes a first sensing rod to extend into the reservoir, wherein the first sensing rod has a first diameter. The apparatus includes a tip disposed at an end of the first sensing rod to interact with a surface of the conductive fluid. The tip has a second diameter over a first portion of the tip adjacent to the first sensing rod. The second diameter is smaller than the first diameter. The apparatus includes a sensor to detect an electrical signal between the conductor and the first sensing rod.

A metal ejecting apparatus is disclosed. The metal ejecting apparatus includes a nozzle orifice in connection with the inner cavity and configured to eject one or more droplets of a liquid metal may include the metal printing material, and a first sensor pair in contact with an internal surface of a lower portion of the inner cavity. Each sensor pair is electrically connected to a printing material feed system where the printing material feed system is configured to receive an electrical signal indicative of an electrical connection from each sensor pair when the metal printing material bridges the electrical connection between each sensor in each sensor pair. A method of controlling level in a metal jetting apparatus is also disclosed.

A method for mitigating water invasion to a submersible motor includes: forming an accumulation zone within an inner space of the submersible motor, wherein the accumulation zone is disposed at a bottom of the inner space below a motor shaft; measuring a conductivity of a fluid inside the accumulation zone using a sensor, wherein the fluid comprises water and dielectric oil; comparing the conductivity of the fluid with a threshold value; upon detecting that the conductivity of the fluid is greater than the threshold value, activating a solenoid pump to discharge the fluid from the accumulation zone to an outside of the submersible motor.