385results about How to "Accurate supervision" patented technology

A method for controlling dynamic power factor or the reactive power of a wind farm is provided. The wind farm comprises a number of wind turbines connected to a utility grid driven with a requested power factor or a requested reactive power. The wind turbine output voltage is controlled to a specific voltage set point. In the method, the wind farm power factor is measured and compared with the power factor requested for the utility grid, or the wind farm reactive power is measured and compared with the reactive power requested for the utility grid, respectively; the ratio of the wind farm voltage to the utility grid voltage is adjusted, and the output voltage of the individual wind turbines is regulated to correspond to the specific voltage set point; the steps are repeated until the power factor of the wind farm electricity corresponds to the requested reactive power.

A self-regulating tourniquet has a pressure source, a pressure applicator apparatus associated with the pressure source and operative to apply pressure therefrom to a limb and a pressure regulator associated with the pressure source and the pressure applicator operative to restrict the pressure transferred from the pressure source to the limb to a designated maximum pressure applied to the limb. The pressure source and the pressure applicator may be separate modules that are adapted to be engaged by connecting means and establish gas passage from the pressure source to the pressure applicator.

A display apparatus and a method of manufacturing the same are disclosed. The display apparatus includes: a first substrate including a light emitting diode part including a plurality of light emitting diodes regularly arranged on the first substrate; and a second substrate including a TFT panel unit including a plurality of TFTs driving the light emitting diodes. The first substrate and the second substrate are coupled to each other so as to face each other such that the light emitting diodes are electrically connected to the TFTs, respectively. The display apparatus is implemented using micro-light emitting diodes formed of nitride semiconductors and thus can provide high efficiency and high resolution to be applicable to a wearable apparatus while reducing power consumption.

A portable, inflatable lumbar belt cushion for providing support to the lower spine and surrounding paralumbar musculature of the wearer while seated. The present invention is for an inflatable belt cushion which adjustably reinforces the small of the back to support the lower spine in a proper lorsdosis, alleviating lower back pain caused by improper posture and fatigue. The belt encircles the wearer's waist and contains a compartment with an inflatable cushion centrally located in the back of the belt which is superimposeable in the small of the wearer's back. The inflatable cushion is of a hemi-elliptical design which is positioned horizontally in the small of the back such that the thicker center portion of the cushion supports the spine and the thinner end portions support the surrounding musculature. The cushion extends outwardly from the outer surface of the belt and thus does not create a compression between the belt and the spine. Support is provided only when the wearer is seated and the cushion creates pressure between the wearer and the back of a chair. The cushion is inflated by manual means such that the firmness and pressure of the cushion is totally adjustable.

An improved gastric bypass prosthetic (GBP) device and an improved GBP fixation device, as well as a GBP kit for the surgical treatment of obesity. In one form, a gastric bypass prosthetic (GBP) device of the invention includes a optional flexible tube extending along a central axis from a proximal end to a distal end, and having a tubular tissue fixation portion at or near said proximal end. The tissue fixation portion extends along the central axis between a proximal end and a distal end of the tissue fixation portion, and has an annular outer surface between the proximal end and the distal end of the tissue fixation portion.

Operating at least one LED on a circuit assembly having an input with first (E1) and second input terminals for coupling to an alternating supply voltage modified by a phase dimmer (12) for setting a dimming angle. Rectifier (14) has an input and an output, with its input being coupled to the circuit assembly's input. Signal (UC1) at the rectifier output is compared with a comparison value. PWM signal (S0) has a first frequency and the dimming angle is correlated with its pulse width. PWM signal having the first frequency (f1) is converted into a PWM signal (S3) that has a second frequency, and the dimming angle is correlated with its pulse width. Controllable current source (22), which is coupled on the input side to the rectifier output, is controlled with PWM signal (S3), with the at least one LED being coupled to the output of the controllable current source.

A diesel engine control system and control method capable of conducting accurate fuel injection unaffected by variations in injector performance caused by differences among individual injectors or change with aging. The diesel engine control system includes an injector for directly injecting fuel into a combustion chamber of a diesel engine, injection quantity controller for controlling fuel injection quantity by varying a period of electric current supply to the injector, estimator for estimating that an electric current supply period when a prescribed (stable) combustion state is obtained is the current supply period for injecting the amount of fuel required for the prescribed combustion state, and control data correcting device for correcting control data of the injection quantity controller based on the estimated current supply period.

A system and method is described for determining, based on one or more variables, the appropriate amount of food to dispense in order to implement weight management individually tailored to one or more pets. Based on the one or more variables, a predefined weight of food is determined that should be dispensed in a container during a given time interval. If the current weight of the food within the container has reached a threshold weight, then no additional food is added to the container during the given time interval. However, if it is determined that the threshold has not been reached, then more food is added to the container. The process is repeated during the given time interval until the threshold is reached, and then optionally again for additional given time intervals.

A method of controlling an output voltage of a pulse width modulation (PWM) converter with a PWM signal driving a power switch of the converter may include using a comparator to compare a reference voltage with a scaled output voltage of the converter, incrementing or decrementing an up/down counter at each pulse of a clock signal applied to the counter depending on a state of the comparator, and controlling the comparator to generate the PWM signal with a control voltage selected from a look-up table using a value of the counter.

An LED driving circuit includes: (a) a current mirror circuit having N-channel MOS transistors whose respective gates are connected with each other, (b) a constant current source for supplying an LED driving current to an N-channel MOS transistor 4, (c) an LED connection terminal, connected with the N-channel MOS transistors, for connecting the LED, (d) an inverter and an input-terminal respectively for inputting, to a source of the N-channel MOS transistor, an ON/OFF signal for controlling ON/OFF of the LED, and (e) a peaking circuit, connected with a drain and source of the N-channel MOS transistor, for generating a peaking current used in peaking a current flowing into the LED. With this arrangement, it is possible to provide an LED driving circuit that easily realizes low current consumption and high-speed emission for the LED. With such an LED driving circuit, an optical transmitter for use in an optical fiber link can also be realized.

Provided is a relative pressure control system has a simple configuration, but enables accurate regulation of a division ratio of an operation gas, and concurrently makes it possible to securely drain the operation gas from an operation gas pipeline in case of emergency. The system includes a plurality of air operated valves of a normally open type that are connected to an operation gas pipeline supplied with an operation gas; pressure sensors that are series connected to the respective air operated valves and that detect output pressures of the respective air operated valves; a controller that controls operation pressures of the respective air operated valves in accordance with the pressures detected by the pressure sensors; and a hard-interlock solenoid valve that correlates the plurality of air operated valves to one another so that at least one of the plurality of air operated valves is normally opened. In the configuration, an opening of a specified one of the plurality of air operated valves is regulated, the operation gas is output at a predetermined division ratio.

A portable remote wireless control for establishing different temperatures in separate portions of a building. The remote control not only regulates hot and cold airflow through rotatable damper vanes in one or more diffusers, but it also recharges the batteries that power the wireless receiver, servomotor and servomotor controls that selectively rotate the damper vanes. Damper vane rotation regulates air flow from the diffuser to control the temperature in the portion of the building. The damper vanes, moreover, are of a light plastic with a marginal band of a foam material to enable the vanes to rotate silently and freely also to form a seal that eliminates a great deal of air seepage past the individual vanes.

An apparatus and method for administering focused energy to a body using either a single energy applicator or multiple energy applicators to supply heat prior to, concurrently with and/or after delivery of a drug, gene and/or viral vector. A multi-modality treatment using a localized, focused and/or regional heating apparatus, which supplies heat to a defined area of a patient's body. The apparatus is used heat is used to pretreat a specific body site, to activate thermoactivated drugs, genes, or viral vectors, and/or to deliver drugs, genes, or viral vectors to the specific body site. The heating apparatus is provided with one or more variable and adjustable probes and one or more delivery ports heat the specific treatment site and to deliver the thermoactivated drugs and genes to the specific treatment site. Each probe may optionally be provided with one or more temperature sensors to allow for the temperature in the specific treatment site and the surrounding tissue to be properly regulated. The use of the apparatus and method allow for the heat conditioning of a specific treatment site and for the delivery or activation of a drug, gene, or viral vector limited to only the specific treatment site, allowing for a more accurate treatment of diseased tissue without damaging healthy tissue. In addition, this method is uniquely used with non invasive technologies to help determine on a real time basis the completion of the treatment.

A water jacket spacer has a spacer body molded in conformity to the shape of the water jacket and a regulating member whose one side is fixed to the spacer body. The regulating member is composed of a first member which is not water-swellable and is elastically deformable and a second member made of water-swellable elastomer which is integrally fixed to the first member. The regulating member lies in a state not-contacting an opposed wall of the water jacket when inserted into the water jacket together with the spacer body, whereas it blocks a part of cooling water flowing through the water jacket by deforming such that a side of the regulating member not fixed to the spacer body faces toward the opposed wall of the water jacket when the second member swells by absorbing cooling water flown into the water jacket and thereby the first member is elastically deformed.