793 results about "Internal energy" patented technology

A surgical instrument for thermally-mediated therapies in targeted tissue volumes and for causing thermal effects in polymer tissue-contacting members. In one embodiment, the instrument has a working end with an interior chamber that is supplied with a biocompatible liquid. An energy source causes a liquid-to-vapor phase change within the interior of the instrument. The vapor phase media then is ejected from the working surface of the instrument, and a controlled vapor-to-liquid phase change in an interface with tissue applies thermal energy substantially equal to the heat of vaporization to ablate tissue. The vapor-to-liquid phase transitions, or internal energy releases, can be provided about thin-film flexible structures for engaging body lumens and cavities. An exemplary embodiment can be used for shrinking, sealing, welding or creating lesions in tissue—while causing limited collateral thermal damage and while totally eliminating electrical current flow in the engaged tissue.

Methods to manufacture nanoscale particles comprising metals, alloys, intermetallics, ceramics are disclosed. The thermal energy is provided by plasma, internal energy, heat of reaction, microwave, electromagnetic, direct electric arc, pulsed electric arc and/or nuclear. The process is operated at some stage above 3000K and at high velocities. The invention can be utilized to prepare nanopowders for nanostructured products and devices such as ion conducting solid electrolytes for a wide range of applications, including sensors, oxygen pumps, fuel cells, batteries, electrosynthesis reactors and catalytic membranes.

An implantable fluid delivery apparatus for infusing medicinal fluids into a patient that includes a novel heat responsive polymer gel material that, upon being heated by a heating coil uniquely functions as an internal energy source for expelling the medicinal fluids from the device.

Systems and methods of identifying molecules of polymers such as, for example, a nucleic acid, are described. The method involves centering a bias voltage across a pair of nano-electrodes separated by a channel that corresponds to one of any of the energy differences between any two internal energy levels of a molecule of interest, and modulating the bias voltage with a modulation waveform while the molecule of interest is in the channel. An electrical signal characteristic of the molecule of interest is derived from the tunneling current between the nano-electrodes, and the characteristic electrical signal is compared with known values of the signal for chemically-known molecules in order to identify the molecule of interest. Multiple pairs of nano-electrodes may be employed to identify more reliably a single molecule or multiple molecules.

The invention discloses a percutaneous closed-loop control charging device for implantation type medical treatment instrument and belongs to the technical field of implantation medical instrument. The percutaneous closed-loop control charging device for implantation type medical treatment instrument comprises an external charger and an internal implantation type medical instrument. An external energy transmitting coil is a large-size flat magnetic core coil, and an internal energy receiving coil is a hollow coil; the external energy transmitting coil transmits electromagnetic energy by adopting a resonance electromagnetic coupling manner with parallel central shafts; and the electrical energy obtained by the internal energy receiving coil charges an internal rechargeable battery through an internal charge control circuit. The closed-loop control charging device communicates in a pulse position modulation manner for closed-loop control to ensure the energy received by the implantation medical instrument in different charging phases to be within the normal range, effectively control the heating and increase the safety; the closed-loop control charging device calculates the efficiency by the internal feedback parameter to realize counterpoint prompt and increase the charging efficiency. The percutaneous wireless charging method can charge the implantation type medical instrument by a titanium casing, is safe and reliable in charging, and can be applied to all types of implantation type medical instruments equivalent to a deep brain stimulator in power level.

A system is disclosed which comprises an implantable electrical medical device (100) with an internal energy receiver (102). The system also comprises an external energy source (104) located externally for supplying wireless energy to the internal energy receiver (102). The external energy source (104) has a primary coil (11) for transmitting energy inductively to a first secondary coil (10) in the energy receiver (102). The system is arranged to measure parameters related to a first coupling factor (C1) between the primary and the first secondary coil (10), and the external energy source (104) is adapted to transmit energy to the energy receiver (102) for enabling the medical device (100) to detect information related to the first coupling factor (C1). The medical device (100) is adapted to wirelessly send feedback information related to said first coupling factor (C1) to the external energy source (104) with the external energy source (104) being arranged to receive the feedback information and to perform a predetermined action based on said feedback information.

A surgical instrument for thermally-mediated therapies in targeted tissue volumes and for causing thermal effects in polymer tissue-contacting members. In one embodiment, the instrument has a working end with an interior chamber that is supplied with a biocompatible liquid. An energy source causes a liquid-to-vapor phase change within the interior of the instrument. The vapor phase media then is ejected from the working surface of the instrument, and a controlled vapor-to-liquid phase change in an interface with tissue applies thermal energy substantially equal to the heat of vaporization to ablate tissue. The vapor-to-liquid phase transitions, or internal energy releases, can be provided about thin-film flexible structures for engaging body lumens and cavities. An exemplary embodiment can be used for shrinking, sealing, welding or creating lesions in tissue—while causing limited collateral thermal damage and while totally eliminating electrical current flow in the engaged tissue.

An energy management system manages energy consumption of managed device(s) disposed to receive energy via a meter connected to an energy supply, the energy supply. A system controller has a computer processor that instructs the managed device(s) to employ an operational mode based on the priority, the energy need, the demand state, and whether the energy consumption rate of the managed device(s) exceeds energy available from at least one of the external energy source and internal energy source.

The invention provides a three-phase modulation multi-level converter energy balance control method which comprises the steps that 1, calculating each phase bridge arm loop current order values; 2, calculating average values of capacitance and voltage of each phase upper bridge arm sub module and average values of capacitance and voltage of each phase lower bridge arm sub module; 3, calculating each actual bridge arm loop current and modulation voltage for tracing bridge arm loop current order values; 4, calculating order values of each phase upper bridge arm voltage and order values of each lower bridge arm voltage; 5, calculating order values of each phase upper bridge arm input module number and order values of each phase lower bridge arm input module number; and 6, control sub modules of each phase upper bridge arm and each phase lower bridge arm to be input or cut off, according to order values of the upper bridge arm input module number, order values of the lower bridge arm input module number and bridge arm current direction obtained in the step 5. The three-phase modulation multi-level converter energy balance control method can guarantee internal energy balance control and simultaneously guarantees alternating current output characteristics.

A pressure alternate gas exhausting method by slotting and fracturing coal seams is applicable to the gas control of complex coal seams in a high-gas-content high-ground-stress area, aims to improve the air permeability of coal bodies and the capacity of drilling gas exhausting, and realizes continuous and efficient drilling gas exhausting of the complex coal seams. According to the pressure alternate gas exhausting method, drill holes to-be-slotted and drill holes to-be-fractured are formed by drilling coal seams to a coal floor; pressure-relief annular slots are formed in the bottom area of a coal seam section by virtue of the rotation of high pressure water jets in the drill holes; ground stress around the drill holes is manually discharged, and internal energy of coal seam gas is released; drilling pressure alternate gas exhausting is performed through designed drilling gas exhausting pipes which can shift the functions of gas exhausting and water injection fracturing; the water injection fracturing of the slotted drill holes and the gas exhausting of the fractured drill holes are performed simultaneously (or the water injection fracturing of the fractured drill holes and the gas exhausting of the slotted drill holes are performed simultaneously). Through alternate and repeated operations, the capacity of continuous and efficient drilling gas exhausting is increased; the effective influence range of drilling gas exhausting is increased by 2-4 times; the air permeability coefficient of coal bodies around the drill holes is increased by 200-500 times; the quantity of exhausted gas of drill holes with lengths of 100 m is increased by 2-5 times, so that the pressure alternate gas exhausting method has higher field application value and social benefits.

A method for determining a distance between a radar sensor and a reflection surface of a material comprising the following steps. The radar sensor is energized via a two-wire control loop which allows for data communication and an internal energy store. An echo profile is generated and analyzed to calculate the distance. During generation of the echo profile, the generation process is interrupted at least once to recharge the energy store via the two-wire control loop.

The invention discloses a target clustering method of imaging satellite observation scheduling. In the method, an optimal target clustering scheme is obtained by obtaining target clustering conditions and qualities of satellite observation, a maximum gain value of the target clustering scheme of a satellite in the orbit circle and an optimal target clustering scheme and finishing a target clustering step, and a set of targets covered by various observation activities of the satellite is further obtained. The target clustering method of the imaging satellite observation scheduling can satisfy using rules and performance characteristics of various operations of the satellite with small computation cost, ensure that the satellite can finish more observation tasks within the given time and improve the using efficiency and the benefits of satellite resources, and has small imaging distortion.

The invention discloses a water pumping and compressed air energy storage system and relates to an electric power storage technology. By the system, water is pumped from a reservoir to a pressure tank through a water pump, and air in the pressure tank is compressed, so that electric energy is converted into internal energy of air to be stored in a valley period; and water is pumped out by high pressure air in the pressure tank, drives a water turbine through a water pipeline and drives a generator to generate electricity in a peak period. According to the system, work characteristics of the pressure tank are utilized, and the water pumping energy storage and compressed air energy storage system is miniaturized, so that the problem that a large scale water pumping energy storage system and the traditional compressed air energy storage system depend on geographical conditions is solved. Meanwhile, the water pumping and compressed air energy storage system has the characteristics of low manufacturing cost, no limitation to energy storage period, suitability for different power sources, environment friendliness and the like, and has a wide application prospect.

The invention discloses a photovoltaic microgrid power equalization control method based on three-end cooperative control, and the method comprises the steps: A) judging the current operation mode of a photovoltaic microgrid according to a DC bus voltage value of hte photovoltaic microgrid, a DC bus rated voltage value, an energy storage unit SOC, a photovoltaic power supply output power, and AC load power; B) carrying out the cooperative control of the working conditions of a photovoltaic power supply, an energy storage device and a grid-connected inverter in the photovoltaic microgrid according to the current operation model of the photovoltaic microgrid; C) controlling the current operation mode of the photovoltaic microgrid to be switched to an adjacent operation mode when the corresponding operation conditions are met; D) and enabling the converted operation mode to be updated to the current operation mode of the photovoltaic microgrid; and then switching to the step B). The method can enable the photovoltaic microgrid to be quickly switched to the corresponding operation mode in a seamless manner, thereby quickly eliminating the operation deviation, balancing the flow of an internal energy of the microgrid, reducing impact on the operation of the microgrid from power fluctuation, maintaining the stability of the voltage of a DC bus of the microgrid, and achieving the dynamic balance of the internal power of the microgrid.

The invention discloses an isothermal-isobaric compressed air energy storage system, and relates to an energy storage technology. Through the adoption of the system, air is compressed into an underwater flexible air storage device by an air compressor at valley of power demand, so that electric energy is converted into internal energy of the air to be stored; and after the heat of high pressure air is absorbed by a heat exchanger, the high pressure air in the air storage device drives a power generator to generate power by an expansion machine at peak of power demand. Through the adoption of the isothermal-isobaric compressed air energy storage system disclosed by the invention, a constant pressure is kept within the air storage device by means of underwater pressure, and approximately isothermal compression and expansion process is achieved by using an interstate cooling and heating measure; therefore, the efficiency of the system is increased. Meanwhile, the isothermal-isobaric compressed air energy storage system disclosed by the invention has the advantages of no limitation from energy storage period, environment friendliness, wide use prospect, and so on, and is suitable for power supplies with various types; and the air storage device is uneasy to be affected by geological disasters such as earthquake and the like.

An at least partially implantable hearing prosthesis. The hearing prosthesis comprises an implantable internal energy transfer assembly configured to receive power from an external device and having an implantable microphone system removably positioned therein configured to receive a sound signal and to generate electrical signals representing the received sound signal; a main implantable component having a sound processing unit configured to convert the electrical signals into data signals; and an output stimulator configured to stimulate the recipient's ear based on the data signals.

In accordance with the described embodiments vehicular electronic control units and their operating methods are described which cost effectively compensate momentary external power loss by reducing the unit's power consumption while external power is lost. In an exemplary embodiment external power loss is detected by the electronic control unit's microprocessor. The microprocessor thereupon disables some components within the electronic control unit and operates with limited functionality for the duration of external power loss. The electronic control unit uses internal energy storage, e.g. a hold capacitor, to sustain its limited functionality operation. Upon recovery from the external power loss the electronic control unit resumes full operation.