摘要:
An acoustic volume sensing device is disclosed. The device includes a housing comprising a reference volume chamber and a variable volume chamber, the reference volume chamber and the variable volume chamber connected by a resonant port, a first MEMS microphone located in acoustic relation to the variable volume chamber, a second MEMS microphone located in acoustic relation to the reference volume chamber, a MEMS speaker located in acoustic relation to the reference volume chamber, and a circuit board in electric connection with the first and second MEMS microphones and the MEMS speaker.
摘要:
A domestic carbonation appliance has a replaceable CO 2 cylinder and accepts a refillable bottle with a removeable cap. The cap can cooperate with a carbonation head of a domestic carbonation device but lacks bayonette or thread features for engaging the carbonation head. The device provides for "one-touch" carbonation.
摘要:
A time remaining display assembly for indicating the time remaining in a pressurized gas tank, adapted to be connected to a regulator having a flow rate adjuster for selecting one of a plurality of flow rate settings comprising an assembly coupled to the flow rate adjuster, the assembly having one or more time scales imprinted thereon, each time scale corresponding to one of the flow rate settings, each time scale indicating the time remaining in the tank as a function of gas pressure in the tank.
摘要:
A system for use in monitoring, measuring, computing and displaying the volumes of internal liquid and gas within a telescopic aircraft landing gear strut (11). Pressure sensors (27) and temperature sensors and motion sensors (25) are mounted in relation to each of the landing gear struts to monitor, measure and record the impact movement and rates of internal landing gear strut fluids (37, 39); experienced by landing gear struts, as the aircraft landing gear initially come into contact with the ground. The computer (25) of this system measures the compression experienced by each landing gear strut and determines if the landing gear strut is improperly serviced with either excess or deficient volumes of hydraulic oil (37) and nitrogen gas (39). Additional features include automating the inspections required to aircraft landing gear, prior to flight, during flight and during landing events.
摘要:
Es ist ein Verfahren und eine Vorrichtung zur Messung eines Volumenstroms (dV(t)/dt) einer in einen Behälter (1) einströmenden Flüssigkeit (A, B) und/oder eines in den Behälter (1) eingeströmten Volumens (V(t)) der Flüssigkeit (A, B), beschrieben, mit der bzw. mit dem in mikrofluidischen Systemen, insb. im Bereich der Analyse, ein hohes Maß an Automatisierung erzielbar ist, bei dem vor dem Einströmen der Flüssigkeit (A, B) in einem vorgegebenen Ausgangsvolumen (V 0 ) im Behälter (1) ein Gas unter einem Ausgangsdruck (p 0 ) eingeschlossen wird, die anschließend in den Behälter (1) einströmende Flüssigkeit (A, B) das eingeschlossene Gas auf vom Volumen (V(t)) der eingeströmten Flüssigkeit abhängiges Gasvolumen komprimiert, und einen vom eingeströmten Volumen (V(t)) und vom einströmenden Volumenstrom (dV(t)/dt) abhängigen Anstieg des Gasdrucks (p G ) des Gases im Behälter (1) gegenüber dem Ausgangsdruck (P G ) bewirkt, der Gasdruck (p G ) im Behälter als Funktion der Zeit (t) gemessen wird, und das bis zur Zeit (t) eingeströmte Volumen (V(t)) und/oder der zur Zeit (t) einströmende Volumenstrom (dV(t)/dt) anhand des gemessenen Gasdrucks (p G ) bestimmt wird.
摘要:
Several aspects of the volume gauge may be implemented with a pressure sensing system and/or a motion sensing system. The pressure sensing system for volume measurements may include a chamber, a pressure changing device, a pressure sensing device, and a processor. The motion sensing system for volume measurements may include a container, a flexible seal, a heating device, a sensing device, and a processor.
摘要:
A fluid processing system is described having at least two chambers. Each of said chambers is separated in a first and a second part by a flexible membrane, the first part, in use, comprising essentially a gas and the second part, in use comprising essentially a non- gaseous fluid, an inlet and/or an outlet means. One or more channels are provided connecting said second parts of said at least two chambers, wherein at least one of said one or more channels includes a pressure sensitive one-way valve. Further, means for exerting pressure on said first part of at least one of said at least two chambers is provided to allow transfer of a sample liquid.
摘要:
A monitoring system (100) for monitoring fluid in a fluid supply vessel (22, 24, 26, 28, 108) during operation including dispensing of fluid from the fluid supply vessel. The monitoring system includes (i) one or more sensors (114, 126) for monitoring a characteristic of the fluid supply vessel or the fluid dispensed therefrom, (ii) a data acquisition module (40, 132, 146) operatively coupled to the one or more sensors to receive monitoring data therefrom and responsively generate an output correlative to the characteristic monitored by the one or more sensors, and (iii) a processor (50, 150) and display (52, 150) operatively coupled with the data acquisition module and arranged to process the output from the data acquisition module and responsively output a graphical representation of fluid in the fluid supply vessel, billing documents, usage reports, and/or resupply requests.
摘要:
The volume measuring device (9) is a linear solenoid-based piston-type device designed to measure the separate gaseous (12) and non-gaseous (11) volumes of a di-phasic mixture within a vessel (10). The invention is attached to a vessel containing the materials as illustrated in Figure 9, and effects a small change in volume of the gaseous fraction of material in the vessel. During each solenoid piston (5) stroke the invention takes a continual series of measurements. By applying a technique derived from Boyle's Law and other algorithms the invention determines the volume of the gaseous fraction of material within the vessel. The volume of the non-gaseous fraction is determined by subtracting the gaseous volume from the known volume of the vessel. Significantly, there is no requirement for knowledge of the absolute pressure or temperature.