An improved fluid level verification apparatus with an integral, internal source of illumination that is powered by an integral, internal energy source and is activated by a motion sensor or any other sensor commonly known in the art to detect the presence of a person in dark or dimly lit environments. The preferred light source is a light emitting diode (LED). A second embodiment of the integral, internal source of illumination that is powered by an integral, internal energy source and is activated by a motion sensor or any other sensor commonly known in the art to detect the presence of a person in dark or dimly lit environments is applied to a fluid reservoir tank.

A capacitive level-sensor device, for detecting the level of at least one medium contained in a container comprises: a detection part that includes an array of capacitive elements, the array of capacitive elements comprising at least one set of electrodes on a substrate, the electrodes being set at a distance from one another according to a level-detection axis, the detection part including at least one insulating layer for electrically insulating the electrodes with respect to the medium; and a control circuit having a plurality of first inputs, electrically connected to which are the electrodes.

The control circuit is prearranged for carrying out a sequential sampling of the inputs of the plurality of first inputs and for comparing a value representing the capacitance associated to each electrode with at least one corresponding reference threshold.

The detection part further comprises at least one temperature sensor, connected to at least one respective second input of the control circuit.

The control circuit is moreover prearranged for carrying out a compensation of at least one of the following: the value representing electrical capacitance associated to each electrode; a value indicating the medium facing each electrode and the at least one reference threshold,

according to information representing at least one temperature value acquired on the at least one second input.

Disclosed is a system of controlling an ice maker. The system includes: an ice making part producing ice; an ice reservoir storing the ice; a water reservoir storing water supplied from outside and providing the water to the ice making part or draining the water; and a controller, when a full state of the ice reservoir is sensed after an ice separation process of separating the ice produced in the ice making part is completed, stopping operation of the ice making part and allowing a first drainage of the water stored in the water reservoir to a predetermined water level and a second drainage of the stored water for a predetermined additional drainage time. In particular, the controller controls the additional drainage time desired for the second drainage by comparing an actual drainage time desired for the first drainage with a preset normal time.

An embodiment includes a combine including a feeder housing for receiving harvested crop, a separating system for threshing the harvested crop to separate grain from residue, a grain tank for storing the separated grain, a grain tank level sensor for detecting a level of grain in the grain tank, an inclination sensor for detecting inclination of the combine, and a controller that controls the combine. The controller configured to receive the grain tank level from the grain tank level sensor, receive an inclination value from the inclination sensor, adjust the grain tank level based on the inclination value, and alert an operator of the adjusted grain tank level.

A liquid monitoring system may include a monitoring device configured to be positioned at a surface of a confined liquid body. The monitoring device may include a housing including walls defining a cavity. The monitoring device may include an internal sensing sub-system enclosed within the cavity. The internal sensing sub-system may include one or more liquid monitoring sensors configured to monitor a level, temperature, or quality of the confined liquid body. The liquid monitoring system may be configured to receive a set of liquid monitoring data from the one or more liquid monitoring sensors. The liquid monitoring system may be further configured to determine one or more liquid measurement values based on set of liquid monitoring data. The one or more liquid measurement values may include a liquid level measurement value, a temperature measurement value, or a liquid quality measurement value for the confined liquid body.

A fuel storage system has a tank access chamber with improved monitoring, servicing and maintenance capabilities. In particular, the chamber includes a sump monitored by a liquid sensor whose proper function can be automatically checked remotely, e.g., via an electronic controller or remote manual operation. In cases where such a check indicates a need for physical inspection of the sump sensor, the present system provides for sensor removal and installation by service personnel from a location outside the tank access chamber. Thus, the present system facilitates regular inspection and routine or unplanned maintenance without the need for a person to physically enter the tank access chamber.

A system for preventing overflow of a toilet includes a sensor, a processor and an actuator. The sensor senses a parameter caused by fluid dynamics within the toilet during a flush cycle. The parameter may involve vibration, sound, pressure, fluid flow rate or other detectible characteristics of the toilet. The processor uses information regarding the parameter that is gathered by the sensor to evaluate the condition of the flush cycle to determine if an impeded flush condition exists. In the event of an impeded flush condition, the processor directs the actuator to close a valve, which may be the toilet flapper valve in some embodiments. Also disclosed are methods for preventing toilet overflow, detecting an impeded flush condition and calibrating the system.

A wound fluid collection system includes a canister adapted to collect bodily fluids from a tissue site. The canister includes an acoustic transducer adapted and positioned to insonify a cavity within the canister, the cavity being defined by a wall of the canister and the bodily fluids collected within the canister. A resonant frequency may be calculated based on a resulting received signal from the insonification. The resonant frequency may indicate a volume of the cavity within the canister. The difference between a known volume of the canister and the calculated volume of the cavity provides the volume of bodily fluid collected in the canister.

The present invention discloses an operating liquid container system, comprising a fuel container with a fuel fill level sensor, a urea container with a urea fill level sensor, and a tank control device which is connected to the fuel fill level sensor in order to receive data representing a fill level of the fuel container and to the urea fill level sensor in order to receive data representing a fill level of the urea container, wherein the tank control device is designed to determine, taking into consideration the data representing the fill level of the fuel container, a first distance that can be covered with the fuel quantity situated in the fuel container, wherein the tank control device is furthermore designed to determine, taking into consideration the data representing the fill level of the urea container, a second distance that can be covered with the urea quantity situated in the urea container, and wherein the tank control device is furthermore designed to output a warning signal if the first distance is longer than or equal to the second distance.

A wound fluid collection system includes a canister adapted to collect bodily fluids from a tissue site. The canister includes an acoustic transducer adapted and positioned to insonify a cavity within the canister, the cavity being defined by a wall of the canister and the bodily fluids collected within the canister. A resonant frequency may be calculated based on a resulting received signal from the insonification. The resonant frequency may indicate a volume of the cavity within the canister. The difference between a known volume of the canister and the calculated volume of the cavity provides the volume of bodily fluid collected in the canister.