603results about "Volume/mass flow by electric/magnetic effects" patented technology

An electronic smoke comprising an inhale detector and a smoke effect generating circuitry. The inhale detector comprises an air-flow sensor which is arranged to detect direction and rate of air flow through the smoke apparatus, and the smoke effect generating circuitry is arranged to operate the smoke effect generating circuitry to generate smoking effect when the air flow direction corresponds to inhaling through the apparatus and the air flow rate reaches at predetermined threshold. Such an electronic smoke alleviates the problem of inadvertent triggering due to environmental vibration or noise or children playing by blowing into the device.

In some embodiments, an oxygen concentrator may include lightweight injection molded housing components coupled to dual-pump diaphragm compressors. The oxygen concentrator may be coupled to a pressure transducer that detects a user's inhalation. The detected inhalation may signal the release of a bolus of oxygen. The sensitivity of the pressure transducer readings may be adjusted based on a detected environment. The user's breathing rate may also be determined to control the number of compressors used for increased efficiency. An ultrasonic sensor and gas flow rate meter may be used to determine an amount of oxygen being delivered to the user. Other components such as step valves and a solar panel may also be used to further conserve battery power. The oxygen concentrator may also incorporate an audio device such as a mobile phone.

Tilting of a drip chamber from its vertical axis during fluid administration can have negative effects upon the accuracy of systems configured for drop counting and/or for volumetric measurement of individual drops passing through the drip chamber. To address these negative effects, in accordance with one embodiment of the present disclosure, a fluid delivery system engages in a fluid control process that comprises determining an error parameter, based at least in part on a tilt signal, generating an error condition, and either holding the fluid flow at the present rate or stopping the flow.

Tilting of a drip chamber from its vertical axis during fluid administration can have negative effects upon the accuracy of systems configured for drop counting and/or for volumetric measurement of individual drops passing through the drip chamber. To address these negative effects, in accordance with one embodiment of the present disclosure, a fluid delivery system that measures the flow volume of a fluid delivery system is disclosed, which includes an imaging apparatus that captures a first image of a drip chamber while a drop is falling therein and a second image of the drip chamber with no drop. Portions of each image that are in substantially the same position in each image are subtracted.

A flow sensor includes a fluid chamber configured to receive a fluid. A diaphragm assembly is configured to be displaced whenever the fluid within the fluid chamber is displaced. A transducer assembly is configured to monitor the displacement of the diaphragm assembly and generate a signal based, at least in part, upon the quantity of fluid displaced within the fluid chamber.

A system for monitoring, diagnosing, and/or controlling a flow process uses one or more flow meters based on an array of pressure sensors. A signal processor outputs at least one of a flow signal, a diagnostic signal, and a control signal in response to the pressure signals from the pressure sensors. The flow signal indicates the at least one parameter of the fluid, the diagnostic signal indicates a diagnostic condition of a device in the flow process, and the control signal is effective in adjusting an operating parameter of at least one device in the flow process. The system may be arranged as a distributed control system (DCS) architecture for monitoring a plurality of flow meters based on array-processing installed at various locations throughout a flow process.

A signal analysis system and method for analyzing an input signal acquired from a mechanical system. The mechanical system may include at least one rotating apparatus. The signal analysis system may be configured to: (a) receive samples of the input signal, (b) perform an invertible joint time-frequency transform (e.g. a Gabor transform) on the samples of the input signal to produce a first array of coefficients which depend on time and frequency, (c) select first coefficients from the first array which correspond to a first subset of one or more order components in the input signal, (d) generate a time domain signal from the first coefficients, and (e) present the time domain signal to a user on a presentation device. The signal analysis system generate the time domain signal from the first coefficients by performing an inverse joint time-frequency transform on the first coefficients. The signal analysis system extract the one or more order components for presentation to the user by masking out all coefficients except those corresponding to the one or more components. Conversely, the signal analysis system may suppress the one or more order components, i.e. present to the user the input signal minus the one or more order components by masking out coefficients corresponding to the one or more components and keeping the remaining coefficients.

An expandable server housing having one or more server chassis stacked upon each other and one intake plenum and one exhaust plenum disposed on opposite sides of the stacked server chassis is disclosed. Each server chassis may have two or more fans predominately controlling airflow rate through a zone of the server chassis. Also, a method and system determining fan failure regardless of blockage of air path.

The present invention is a display apparatus for affixation to a shower or bath water supply piping or incorporated within a shower, or bath or faucet head, in an aesthetically pleasing format and comprised of fabrication materials e.g., a polymeric or metallic bases with chrome, brass white or colored finishes or combination of these finishes and materials of construction. The display apparatus includes a power generation, CPU or microprocessor, temperature sensor and/or water flow sensors, timing circuits and a display means. The present invention can include a remotely located wireless receiver apparatus. Ergonomically placed buttons can be incorporated into the display means to change parameter units (e.g. metric to US), set alarm conditions (e.g. temperature over set point, lime past a set point, flow rate set points). The display means must be able to provide sufficient lighting in shower conditions. In addition, the display means must be able to sustain capability in moist wet conditions. In the embodiment defined by the attached shower display apparatus, know piping joint technology will be used for installation into both new and presently installed shower systems. In the embodiment defined by the display means incorporate into the shower head the shower head/display assembly can also be installed in both new and presently installed shower systems.

A software-development system or versioning system has a collection of modules for performing individual development functions such as document editing, keyword processing, and private-copy management. Each module has an interface compatible with that of the others, so that modules can be added to or substituted for the original modules, if the new modules conform to the interface. The architecture of this system supports the performance of development actions such as document merging and keyword expansion at any location within the system. The system operates upon documents and files as objects in an object space, rather than in name spaces.

A volume-based, rather than time-based, system for dispensing fluid incorporates a microprocessor-based controller, software, pump, and positive displacement flow meter. The volume being pumped and the time it takes to pump that volume is calculated and tracked by the software, giving a flow rate. This rate is then tracked by the software for any changes. Any conditional changes that occur, affecting this rate, are tracked, and if the rate becomes too excessive outside of the normal rate established at initial calibration, then an alarm or other indication is provided to the operator.

A sensor for detecting contact of a fluid delivery probe with a fluid surface and for detecting fluid flow through the probe includes a first electrode disposed along a fluid flow path of the probe upstream from a distal tip of the probe and a second electrode longitudinally spaced and electrically isolated from the first electrode and disposed at the distal tip of the probe. An oscillating signal is transmitted through the first electrode, and at least a portion of the signal is received through the second electrode. Through changes in the received signal due to the distal tip of the probe coming into contact with a fluid surface or due to fluid flow through the conduit between the first and second electrodes, fluid surface contact and fluid flow can be detected. A pressure sensor can be employed to monitor internal fluid pressure within the fluid conduit of the fluid delivery probe as a secondary, redundant mechanism for detecting fluid flow through the conduit.

There is provided a liquid droplet monitoring and measuring apparatus (1) for a liquid droplet dispensing system having a nozzle (5) with a dispensing tip (7). The apparatus (1) comprises an inner chamber (2) surrounded by an outer shield (3), preferably not in contact with each other. An RF oscillator electrically energises the liquid through an electrode (11). The inner chamber (2) is connected through pre-amplifiers (16), band pass filters (17), rectifier (18), low pass filter (19) and signal conditioning amplifier (20) to a signal read-out device (21). The operation of the apparatus is based on the measurement of the capacitance between the nozzle (5) and the inner chamber (2). As a droplet (15) grows on the dispensing tip (7), the capacitance between the nozzle (5) and the inner chamber (2) increases. Therefore, the signal detected and received by the signal read-out device (21) changes. This change is directly related to the volume of the droplet which can therefore be measured. In another embodiment, the liquid is not energised but is used to change the dielectric constant of a capacitor formed by, for example, the nozzle (5) and a substrate.

A medical device accessory comprising an interface configured to connect the medical device accessory with a medical device for administration of a medical treatment using the medical device and the medical device accessory, a plurality of electrical contacts proximate the interface, the electrical contacts comprising a lead electrical contact adapted to receive an voltage from a power source associated with the medical device and one or more identifying electrical contacts, and at least one conductor providing an electrical connection between the lead electrical contact and the one or more identifying electrical contacts. An arrangement of the one or more identifying electrical contacts connected to the lead electrical contact identifies a characteristic of the medical device accessory.

Methods and apparatuses for determining a fluid parameter in a vessel by altering a property of the fluid, sensing the difference in the property after the fluid is altered, particularly as related to the property in an unaltered portion of the fluid.