A liquid level detection system of detecting a target container includes a main body, an optical sensor, a fan and an operational processor. The main body has a supporting platform whereon the target container is disposed. The optical sensor is disposed above the supporting platform and adapted to output a detection image containing the target container. The fan is disposed on the main body and faces the supporting platform. The operational processor is electrically connected to the optical sensor, and adapted to analyze the detection image generated within an operation period of the fan and further to acquire an effective feature of the target container inside the detection image.

A device to measure the material level inside the container includes a housing unit removably attachable to a cap of a container for holding a beverage, wherein the housing unit is configured to remain attached to the cap when the cap is at least partially removed from the container. The device further includes, a signal producing unit located in the housing unit, a first sensor located in the housing unit to sense a beverage level in the container and a controller located in the housing unit. The controller is configured to receive from the first sensor an indication of a beverage level in the container and activate the signal producing unit based at least on the indication of the beverage level in the container.

Embodiments described herein generally relate to devices, systems and methods for measuring a volume or number of doses remaining in a drug delivery device that is used for delivering a dose to a patient. In some embodiments, a dose measurement system for measuring the liquid volume in a container includes a light guide disposed and configured to reflect electromagnetic radiation toward the container. The dose measurement system also includes a light guide disposed and configured to emit electromagnetic radiation into the light guide. A plurality of sensors are located in the apparatus that are optically coupleable to the light guide and are disposed and configured to detect the electromagnetic radiation emitted by at least a portion of the light guide. The apparatus also includes a processing unit configured to receive data representing the portion of the detected electromagnetic radiation from each of the plurality of sensors. The processing unit is further operable to convert the received data into a signature representative of the electromagnetic radiation detected by the plurality of sensors.

A detector detects a fill level of a receiving vehicle. A rendering is generated that shows a representation of the receiving vehicle and a distribution of the material in the receiving vehicle based on the detected fill level.

A detector detects a fill level of a receiving vehicle. A rendering is generated that shows a representation of the receiving vehicle and a distribution of the material in the receiving vehicle based on the detected fill level.

The invention concerns a method for measuring the concentration of a substance or mixture of substances and/or determining the level in a fluid with intrinsic fluorescence, preferably fuel systems. The invention also refers to the optical device suitable for implementing the method, which comprises a unit which generates light for excitation of the sample; a unit of detection of the signal emitted by the sample and a unit of signal processing. The device and method by which it is implemented also allow the determination of the spatial distribution of the substance or mixture of liquid substances and/or the fluid level in a container. One of the main applications is the measurement of the concentration of oxygen in the fuel tank of aircrafts, based on the measurement of the intrinsic fluorescence of the fuel.

The invention concerns a method for measuring the concentration of a substance or mixture of substances and/or determining the level in a fluid with intrinsic fluorescence, preferably fuel systems. The invention also refers to the optical device suitable for implementing the method, which comprises a unit which generates light for excitation of the sample; a unit of detection of the signal emitted by the sample and a unit of signal processing. The device and method by which it is implemented also allow the determination of the spatial distribution of the substance or mixture of liquid substances and/or the fluid level in a container. One of the main applications is the measurement of the concentration of oxygen in the fuel tank of aircrafts, based on the measurement of the intrinsic fluorescence of the fuel.

A vehicle fluid reservoir system has a fluid tank that contains a vehicle fluid and a light source in an interior of the fluid tank that illuminates the interior of the tank and the surface of fluid in the tank. The illumination of the surface of fluid in the tank is visible from outside the tank, enabling a quick and easy determination of the level of fluid inside the tank. A switch is operatively communicated with the light source. The switch is operable to control the light source to emit light and illuminate the interior of the tank and the fluid surface in the interior of the tank, and to control the light source not to emit light.

An optical baffle and combination with a laser sensor of especial applicability in attenuating off-axis laser light in the use of a laser sensor for determining the height of a liquid level or distance to a surface detectable through a pipe.

A cooking assistance appliance can include a body, at least one camera, at least one sensor, and an imaging device for capturing an image of a cooking appliance. The cooking appliance can provide for monitoring use of the cooking appliance, as well as assisting the user in operating the cooking appliance. Additionally, the cooking assistance appliance can be integrated into a hood or a microwave oven and vent combination above a stovetop.