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333 results about "Intermittent power" patented technology
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Intermittent electricity is electrical energy that is not continuously available due to external factors that cannot be controlled, produced by electricity generating sources that vary in their conditions on a fairly short time scale. Sources of intermittent electricity include solar power, wind power, tidal power, and wave power.
Intelligent control system for microgrid energy
InactiveCN101630840ARich control functionsHigh control precisionTotal factory controlProgramme total factory controlMicrogridEnergy control
The invention relates to a miniature power supplying system containing a plurality of distributed power supplies, and discloses an intelligent energy control system capable of controlling a microgrid by using forecast information. The intelligent control system for microgrid energy comprises a microgrid system and a control system, wherein the microgrid system comprises a power supply unit, an energy storage unit and a load unit, and the control system comprises an information collecting system and a central processing unit. The central processing unit comprises a load forecasting module, a microgrid online status estimating module, an energy forecasting module of an intermittent power supply energy forecasting and storing unit, a microgrid system analyzing module and a microgrid multiobjective optimization operation and comprehensive coordination control module. The intelligent control system for microgrid energy can control the microgrid according to the forecast information and accomplish the intelligent operation of the microgrid.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Systems and methods for electric vehicle grid stabilization
InactiveUS20110001356A1Fairness to the power resourcesMaximizing abilityBatteries circuit arrangementsSimultaneous control of electric and non-electric variablesControl powerPower flow
A system and methods that enables power flow management using AGC commands to control power resources. Power regulation can be apportioned to the power resources. An AGC command requesting an apportioned amount of the power regulation may be transmitted to a power resource. The power flow manager can determine a power regulation range for a power resource, and transmit an AGC command based on the power regulation range. In addition, a power flow management system can detect a change in an intermittent power flow and implement a power flow strategy in response to the change in the intermittent power flow. The power flow strategy may be a smoothing strategy or a leveling strategy.
Owner:GRIDPOINT
Methods and systems for mitigating distortion of gas turbine shaft
Methods and systems for mitigating distortion of a shaft of a gas turbine engine are provided. One method comprises at least one step of applying intermittent rotary power to a shaft of a gas turbine engine. The step of applying intermittent power to the shaft is performed during a period where conditions of temperature differential in the engine exist capable of distorting the shaft. The methods and systems shorten the time needed to start a gas turbine engine in such a way that bowing of a shaft is not a significant problem.
Owner:GENERAL ELECTRIC CO
Transfer Switch For Automatically Switching Between Alternative Energy Source And Utility Grid
ActiveUS20120267957A1Decreased energy levelReduced DC voltageBatteries circuit arrangementsPower network operation systems integrationElectricityPower inverter
An automatic transfer switch configured for connection to a non-traditional, full-time or intermittent power source, such as a wind turbine or solar panel, selectively connects the non-traditional power source as a primary power source and a utility-derived power source as a secondary power source. The intermittent power source includes an energy storage device, such as a bank of DC batteries, to supplement power delivery during periods of low energy production. The power is provided to an AC load via a DC-to-AC inverter. The transfer switch includes an input to monitor the voltage level on the energy storage device and will switch from the primary power source to the utility power source when the voltage level on the energy storage device drops below a preset level. Thus, a loading condition that exceeds the rating of the inverter will not fault the inverter or limit the power available to the loads.
Owner:RELIANCE CONTROLS
Arc maintenance device for high density discharge lamps including an adaptive wave form monitor
InactiveUS20050258765A1Electric light circuit arrangementGas discharge lamp usageInstabilityEngineering
A supplemental arc maintenance electrical supply for a high density discharge (HID) lamp (L) for applying a high frequency supplemental arc voltage to maintain the arc during a period of unstable or intermittent AC supply in addition to or in lieu of the voltage or current being supplied to the lamp by the HID ballast (12). AC supply instability is identified in less time than the unstable or intermittent power will cause the lamp to arc to extingish and energize a supplemental arc maintenance electrical supply to maintain the arc of the lamp during the period of instability or interruption, so long as its internal, rechargeable battery is operational. The monitoring system (18) also recognizes the re-establishment of a stable (as by being a persistently repeating cycle but not necessarily a sinusoidal AC supply) repeating electrical power supply which is also of sufficient energy level to maintain operation of the HID lamp.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV +1
Power transmission device and image forming apparatus having the same
ActiveUS20080190242A1Reliable transmissionMachines/enginesElectrographic process apparatusElectric power transmissionImage formation
A power transmission device and an image forming apparatus having the same that is capable of reliably transmitting intermittent power to a driven component from a driving source. The power transmission device includes a shaft, a first intermittent gear to receive power from the driving source and to rotate on the shaft, a second intermittent gear arranged so as to move between a first position in which the second intermittent gear is connected to the first intermittent gear along an axial direction of the shaft and a second position in which the second intermittent gear is disconnected from the first intermittent gear, a sliding unit arranged so as to slide along the shaft and to move the second intermittent gear in the axial direction of the shaft, and a driving unit to drive the sliding unit.
Owner:HEWLETT PACKARD DEV CO LP
Delta-sigma analog-to-digital converter (ADC) having an intermittent power-down state between conversion cycles
ActiveUS7365667B1Electric signal transmission systemsAnalogue conversionLoop filterDigital down converter
A delta-sigma analog to digital converter (ADC) having an intermittent power down state between conversion cycles provides for power consumption savings when the converter is in a lower sample rate operating mode. Clocks provided to the digital portions of the converter are disabled, except for a periodic interval in which a conversion is performed at the higher selectable sample rate of the converter. The analog portions of the converter can also be disabled, but are re-enabled for a predetermined time period and reset before the digital clocks are enabled, so that the loop filter and feedback value supplied from the quantizer to the loop filter are stable prior to each conversion.
Owner:CIRRUS LOGIC INC
Method for designing ultralow-power wireless data transmission network
ActiveCN105792305AReduce power consumptionImprove work efficiencyPower managementTransmission systemsGrid networkWireless data transmission
The invention discloses a method for designing an ultralow-power wireless data transmission network. The method comprises the following steps of designing the data transmission network; establishing low-power communication; designing route communication; carrying out node registration; and automatically maintaining a network fault. The designed grid network has self-adaptive and automatic intelligent negotiation networking capability of each node, the network can compute an optimal route automatically and bypass the fault nodes of the individual nodes automatically. In the whole system, all nodes can work in a low-power mode of intermittent power supply, and a centralizer can be in a low-power mode or a normal power mode. The whole network supports bidirectional communication between the centralizer and the nodes, the nodes can transmit the meter reading data to the centralizer, and the centralizer can issue the control information to the appointed nodes, so that the working efficiency is higher.
Owner:长春思拓电子科技有限责任公司 +1
System For Method Of Predicting Power Events In An Intermittent Power Environment And Dispatching Computational Operations Of An Integrated Circuit Accordingly
ActiveUS20080189567A1Fault responseVolume/mass flow measurementPrediction algorithmsPrediction system
A system and method of predicting power events in intermittent power environments and dispatching computational operations of an integrated circuit accordingly. A power management prediction system includes a controller executing a prediction algorithm, an arrangement of computation circuitry, a non-volatile storage device containing a power requirements log and a power history log, a clock generator, an intermittent power source, and a power monitor circuit. A method of predicting intermittent power events and dispatching computational operations includes: storing power requirements of each computational operation, monitoring the intermittent power source to generate a history log, predicting a subsequent power event based on the history log, retrieving actual power requirements of one or more computational operations, comparing the predicted power event with actual power requirements, determining whether actual power requirements are satisfied, dispatching one or more computational operations that correspond to one or more actual power events, or performing an error recovery operation.
Owner:MARVELL ASIA PTE LTD
System for dynamically controlling power provided by an engine
A method and system may be provided to perform a process for controlling power provided by an engine in a machine. In an embodiment of the present invention, a process for controlling power provided by an engine operating in a machine is provided. The process may include determining a first power value reflecting a predetermined first power to be provided by the engine to a component operating in the machine and determining, during machine operations, at least one of a parasitic load power value and an intermittent power load value. A second power value may then be determined that reflects a second power provided by the engine based on the parasitic power value, the intermittent power value, and the net power value. The second power value is adjusted such that the engine substantially provides the predetermined net power to the component.
Owner:CATERPILLAR INC
Method for pulsed charging of a battery in an autonomous system comprising a supercapacitance
InactiveUS20100066309A1Easy to implementLong life-timeBatteries circuit arrangementsLead-acid accumulatorsCapacitanceElectrical resistance and conductance
The autonomous system comprises an intermittent power source delivering a direct current. A supercapacitance is connected in parallel with the battery and the power source respectively via a first switch and a second switch. Charging of the battery comprises pulsed current charging managed by a control circuit. During a current pulse, the amplitude of the current and the amplitude of the voltage increase at the terminals of the battery are measured. The dynamic internal resistance of the battery is determined from said amplitudes. A maximum acceptable current threshold is determined according to a maximum voltage threshold, to said dynamic internal resistance and to the no-load voltage at the battery terminals. At the next current pulse, the value of the charging current is limited by controlling the closing time of the second switch.
Owner:COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Opportunistic power management for managing intermittent power available to data processing device having semi-non-volatile memory or non-volatile memory
ActiveUS20160378169A1Power supply for data processingEnergy efficient computingEnergy basedParallel computing
A data processing device is configured to deploy, in response to an intermittent source of power, opportunistic power management strategies to manage harvested energy based on an expected amount of energy available to the data processing device and on expected energy expenditures defined by data processing and memory content control writing performed by the data processing device.
Owner:INTEL CORP
Linear vibration motor
ActiveUS7235936B2Amplitude variation caused by difference between the voltages of the rechargeable battery can be preventedMotor/generator/converter stoppersDC motor speed/torque controlRechargeable cellEngineering
Owner:MATSUSHITA ELECTRIC WORKS LTD
Method for optimizing operation simulation of multi-energy combined power generation system
InactiveCN103490449AMeet the demand of electricity loadSingle network parallel feeding arrangementsWind energy generationElectric power systemSimulation
The invention discloses the technical field of electric power system operation and dispatching, and particularly relates to a method for optimizing operation simulation of a multi-energy combined power generation system. Multiple days or a week is selected as a dispatching period, according to a predicted deviation value of intermittent power source output of wind power, photovoltaic energy and the like, a predicted scene of the output of the wind power and the photovoltaic energy is established; the operation position of a hydroelectric generating set with the output capable of being flexibly adjusted in a loading curve can be firstly determined in the multi-energy combined power generation system, the assembly mode of a thermal power generating set is arranged from an initial time frame of the dispatching period, reasonable load distribution is conducted on each type of set with operation cost optimization serving as a local target so that a load regulation abundant zone for the sets operated at each time frame can be formed, and finally the load regulation abundant zone of the sets at each time frame is continuously selected and updated, and therefore combination of the sets in the whole dispatching period is finally achieved and allocation of load between the sets is achieved. The method guarantees balance of system power and stable operation.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
Intermittent power supply micropower standby control circuit
ActiveCN101770248AReduce manufacturing costReduce standby power consumptionEfficient power electronics conversionConversion without intermediate conversion to dcCapacitanceElectrical battery
The invention discloses an intermittent power supply micropower standby control circuit comprising a stand-by power supply module, a relay and an intermittent trigger circuit, wherein the stand-by power supply module is provided with a reservoir capacitance, automatically charges when starting up and provides electric energy for a signal receiver and CPU during standby as well as provides starting electric energy for the relay; after connected in parallel, the normally open contact and the home appliance button switch are connected between mains supply and a voltage-stabilized source in series so as to cut off an alternating current power supply during standby; a voltage comparison circuit and a capacitance capable of providing reference voltage are arranged in the intermittent trigger circuit; when the voltage of the reservoir capacitance is lowered to be below the reference voltage, the trigger circuit triggers the relay to be conducted, alternating current is switched on to charge,and the relay is cut off after being charged to cut off the alternating current power supply; the step is repeated to ensure that the voltage-stabilized source can work intermittently, which has the advantages that the voltage-stabilized source works intermittently during home appliances standby so as to greatly save standby energy consumption; and the capacitance is used as a standby power supply of which the service life is longer than various batteries. The invention is suitable for electrical appliances of various standby functions.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
Ultrasonic distance measurement system and method for controlling ultrasonic distance measurement system to measure distance
ActiveCN103869321AFlexible operationReduce volumeProgramme controlComputer controlElectricityAnalog signal
The invention discloses an ultrasonic distance measurement system and a method for controlling the ultrasonic distance measurement system to measure the distance. The ultrasonic distance measurement system comprises an ultrasonic sensor and a mobile terminal, wherein the ultrasonic sensor is used for transmitting an ultrasonic signal to a measurement target and receiving an analog signal reflected by the target; the mobile terminal is used for receiving the analog signal received by the ultrasonic sensor through an audio port of the mobile terminal and carrying out timing operations, the distance is calculated on the basis of the obtained analog signal and a timing result, the obtained distance is stored and displayed, and the ultrasonic sensor is controlled to be started. The mobile terminal is adopted to serve as a processor, a cycle sine wave signal is output to a power obtaining circuit through a second channel of the audio port to serve as a power supply of the ultrasonic sensor, an intermittent power supply strategy is adopted, and electricity is saved; a cycle sine wave signal is transmitted to a transmitter of the ultrasonic sensor through a first channel of the audio port to provide a square signal with proper power for the ultrasonic sensor, and an echo signal of the ultrasonic sensor is received through a fourth channel of the audio port.
Owner:NAT SPACE SCI CENT CAS
Hybrid power for cracking power plant co2
InactiveUS20100146927A1Engine fuctionsWind energy with garvitational potential energyElectric powerLoad following power plant
Power from wind, solar, and other intermittent energy sources cracks carbon dioxide, NOx, SOx, and other emissions from fossil fuel power plants, which provide baseload power to the grid. By this hybrid power system, intermittent sources can be integrated in power generation without compromising the reliability of the grid and without long power line connections. Carbon dioxide becomes, in effect, a storage medium for energy produced by intermittent sources. The CO2 can be pipelined to sites where wind, solar, tidal or and other intermittent energy sources are available, or power lines can be run from such intermittent sources to convenient sites for cracking.
Owner:MCCUTCHEN CO
Method for modeling power transmission margin control model considering random probability
ActiveCN103473393AMeet the security and stability probability requirementsData processing applicationsSpecial data processing applicationsElectricityNew energy
The invention provides a method for modeling a power transmission margin control model considering random probability. The method comprises the following steps of establishing a random probability model; carrying out scheduled random trend calculation when a large-scale intermittent type power source is accessed into a grid; and establishing the power transmission margin control model considering the random probability. The method for modeling the power transmission margin control model considering the random probability has the advantages that the accommodating capability of the grid on the new energy sources is improved for further exploring the power transmission margin control algorithm when the large-scale intermittent power source is accessed, and the technical basis is provided for the advanced control of the scheduled trend when the large-scale wind power is accessed.
Owner:STATE GRID CORP OF CHINA +1
Method for detecting intermittent high-resistance grounding fault through intermittent detection
ActiveCN103529344AIncreased sensitivitySimple trigger conditionsElectrical testingTransient stateHigh resistance
The invention relates to a method for detecting an intermittent high-resistance grounding fault through intermittent detection and belongs to the field of emergency protection circuit devices. The method comprises the steps that detected forward fault pulses of intermittent power counted within a preset time window and the result of pulse counting is compared with a preset counting threshold when the timing is ended; if a counted value exceeds the preset counting threshold, a fierce transient state is deemed to occur within short time and a relay protection system gives out an alarm of the detected grounding fault as the intermittent high-resistance fault. The method for detecting the intermittent high-resistance grounding fault through intermittent detection has the advantages that the intermittent high-resistance grounding fault can be detected more sensitively, the faulted line can be removed, the sensitivity of a power supply line protection device is improved, the protection effect of the existing relay protection system / device is fully exerted, the continuous and stable operation of the entire medium-voltage power distribution system is improved and the safety performance of the entire power supply system is guaranteed. The method can be widely used in the field of high-resistance grounding fault detection and the relay protection of the medium-voltage power distribution system with a neutral point which is effectively grounded.
Owner:STATE GRID CORP OF CHINA +1
Methods and systems for mitigating distortion of gas turbine shaft
ActiveUS20110232294A1Reduce distortion problemsEngine fuctionsTurbine/propulsion engine ignitionEngineeringTurbine
Methods and systems for mitigating distortion of a shaft of a gas turbine engine are provided. One method comprises at least one step of applying intermittent rotary power to a shaft of a gas turbine engine. The step of applying intermittent power to the shaft is performed during a period where conditions of temperature differential in the engine exist capable of distorting the shaft. The methods and systems shorten the time needed to start a gas turbine engine in such a way that bowing of a shaft is not a significant problem.
Owner:GENERAL ELECTRIC CO
Hybrid energy storage control method for stabilizing intermittent power supply power fluctuation
InactiveCN104300567AReduce charge and discharge timesImprove the problem of shortened lifespanAc network load balancingPower oscillations reduction/preventionStored energyEngineering
The invention discloses a hybrid energy storage control method for stabilizing intermittent power supply power fluctuation. According to the method, a super capacitor with large power density and high dynamic response speed is adopted as system buffer stored energy for preferentially stabilizing the power fluctuation, and the voltage of the super capacitor is prevented from being out of limit by adjusting the power of a storage battery set. The storage battery set is divided into a charge set and a discharge set which are independent and are controlled respectively, and the circulating charge and discharge frequency of the storage battery set is reduced to the maximum extent. Based on the mutual adjustment rule of the charge set and the discharge set of the storage battery set of a charge state, the storage battery set is prevented from being deeply charged or discharged, and the service life of the storage battery set is prolonged.
Owner:SOUTHEAST UNIV
Coupling hydrogen production system and control method thereof
ActiveCN106119883ASolving the Hydrogen Purity ConundrumImprove general performanceCellsEnergy inputHydrogen purityElectricity
The invention provides a coupling hydrogen production system and a control method thereof and belongs to the technical field of new energy. The system comprises a control unit and further comprises an electricity generation unit, an energy management unit, a hydrogen production unit and a gas storage and supplement unit which are all connected with the control unit and connected with one another in sequence. The control unit detects and analyzes all working parameters of the electricity generation unit and the hydrogen production unit and controls actions of the energy management unit and the gas storage and supplement unit. Hydrogen produced by the hydrogen production unit enters into the gas storage and supplement unit to be stored, and the control unit controls the gas storage and supplement unit to supplement the hydrogen production unit with hydrogen if necessary. The control method involves three operation modes, that is, electricity is supplied only by a wind power generation device and a photovoltaic power generation device, electricity is independently supplied by a mains supply, and electricity is supplied by the mains supply, the wind power generation device and the photovoltaic power generation device simultaneously. The problem of the hydrogen purity of commercial hydrogen production equipment under the condition of a fluctuant intermittent power supply with a wide power range can be solved through the coupling hydrogen production system and the control method thereof, cost is low, safety is high, and stability is high.
Owner:TONGJI UNIV
Method of diagnosing defective elements in a standalone system, powered by an intermittent power source
ActiveUS20100085063A1Photovoltaic monitoringSubstation/switching arrangement detailsCharge currentCurrent threshold
The diagnostic method applies to a standalone system including a generator, a power regulator and a power storage element. The method includes comparison of the effective charging power or current of the power storage element respectively with a predefined power or current threshold. If the effective charging power or current is lower than said threshold, the power storage element is disconnected. An abnormal behavior is then detected either by comparing the effective charging power with the smaller of the values representative of the theoretical charging power of the power storage element and of the maximum power able to be delivered by the generator and comparing the effective and theoretical charging voltages, or by comparing the effective and theoretical charging currents.
Owner:COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Lithium ion secondary battery system, and method for operating lithium ion secondary battery
ActiveUS20050266299A1Decrease of capacity of lithium can be restrainedReduce dropBatteries circuit arrangementsElectric devicesLithiumBattery system
A drop of discharge or charge capacity in discharging or charging with a large current is reduced without changing a design of a lithium ion secondary battery itself. When the lithium ion secondary battery for a car or a vehicles such as an electric automobile and a hybrid automobile is discharged or charged with, for instance, a large current not less than 5C, an intermittent power feeding of repeatedly executing a power feeding (t2) and a pause (t1) is carried out.
Owner:NEC CORP
Utility grid, intermittent energy management system
ActiveUS20170003700A1Programme controlData processing applicationsPower gridEnergy management system
A method for controlling an operating condition of an electric power grid, the electric power grid having an intermittent power supply coupled thereto, the method comprising: using an energy variability controller, controlling variability of a delivered power output of the intermittent power supply to the electric power grid by: monitoring an actual environmental value for a location proximate the intermittent power supply, an available power output of the intermittent power supply being dependent on the actual environmental value; when the actual environmental value is increasing and hence the available power output is increasing, increasing the delivered power output according to a predetermined rate of increase; monitoring a forecast environmental value for the location; when the forecast environmental value is decreasing, decreasing the delivered power output according to a predetermined rate of decrease; and, limiting the delivered power output to below a predetermined threshold.
Owner:GREEN POWER LABS INC
Network voltage reactive-power compound coordination control system and method for new energy power generation
ActiveCN103166226AImprove grid-connected power generation efficiencyImproving the comprehensive control level of reactive powerReactive power adjustment/elimination/compensationWind energy generationTransformerNew energy
The invention belongs to the technical field of voltage reactive-power control of grid-connected operation of new energy power generation with wind power, photovoltaic and the like in electric engineering, and particularly relates to a network voltage reactive-power compound coordination control system and method for new energy power generation. A silent dynamic var generator, a dynamic voltage restorer and an existing transformer station voltage reactive-power comprehensive control device are combined to form a dynamic voltage reactive-power control system, a voltage reactive-power plane is divided into sixteen control areas by the aid of the optimum voltage reactive-power operating state and the unit adjustment variable quantity of a capacitor bank and an on-load voltage regulating transformer tap, and each area corresponds a corresponding control strategy. Network voltage reactive-power frequent fluctuation caused by wind power and photovoltaic intermittent power generation is restrained by coordinately controlling the dynamic voltage reactive-power control system, network voltage reactive-power comprehensive control level is improved, practical engineering application is facilitated, and key technical support is provided for voltage reactive-power comprehensive control of new energy grid-connected power generation in a smart grid.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
Heat dissipation device
InactiveUS7619894B2Portable electronic device becomes much thinnerLarge noise is generatedPump componentsSemiconductor/solid-state device detailsElectricityEngineering
A heat dissipation device, electrically connected to an intermittent power source, is used for dissipating heat generated by a heat-generating element on a circuit board. The heat dissipation device has at least one coil and at least one vibrating sheet. The coil is used to receive the intermittent power source to produce a magnetic field. One end of the vibrating sheet is fixed, and the other end is suspended over the coil. The suspended end flutters periodically under the magnetic force of the intermittent magnetic field, so as to produce an airflow.
Owner:INVENTEC CORP
Embedded standby energy-saving method and device
InactiveCN101846967AReduce energy consumptionMeet the requirements of reducing power consumptionControllers with pulse-train output signalElectronic switchElectric cables
The invention relates to an embedded standby energy-saving method and an embedded standby energy-saving device. In the method, a control circuit, an electronic switch and a sensor are embedded between electric equipment and an electric supply through a distribution socket or an electricity cable; the control circuit, the electronic switch and the sensor realize intermittent power supply and synchronous detection when the electric equipment is in a standby state; when the electric equipment is electrified and normally works, the sensor converts the detected supply current into a signal level with the same size and inputs the signal level to the control circuit; if the signal level is more than a screening threshold level, the control circuit converts the signal level into a pulse signal with constant amplitude and outputs the pulse signal into the electronic switch; and then the electronic switch is maintained to be turned on and normally and continuously supplies power to the electric equipment. In the device, the electric supply is connected with the electric equipment with a switch power supply through the electronic switch and the sensor, and the output end of the sensor is connected with the control end of the electronic switch through the control circuit. The method and the device can conveniently realize standby energy conservation between the electric equipment and the electric supply; and the device has the characteristics of small volume, light weight, reliability, low price and long service life.
Owner:SHANGHAI UNIV
Information processing apparatus and semiconductor memory
InactiveUS6967891B2Reliable retentionReduce frequencySemiconductor/solid-state device manufacturingDigital storageInformation processingHemt circuits
An information processing apparatus or a semiconductor memory according to the present invention periodically refreshes a high-speed nonvolatile memory cell having spontaneous data storing capability at the time of nonuse of the apparatus (or at the time of standby of the memory) by refresh control element. Thus, a combination of the spontaneous data retaining capability of the nonvolatile memory cell, the periodic refresh at the time of nonuse, and intermittent power supply by turning on / off a switch circuit makes it possible to retain data reliably while minimizing power consumption at the time of standby. Thereby a memory system that can retain data reliably with minimum power consumption and enable high-speed access can be realized.
Owner:SONY CORP
Measuring method and system for achieving blood pressure continuous measurement of pulse wave conduction time
InactiveCN1820703ARealize real-time continuous measurement monitoringReduce distractionsCatheterSensorsContinuous measurementEngineering
The pulse wave conducting time measuring method and system for the continuous measurement of blood pressure includes setting pulse wave sensor on the head of the testee, setting electrocardiac and pulse wave sensors in different network nodes, setting controlling computer system, connecting the sensors via the node controllers and communication protocol with the computer system, and adopts power saving intermittent power supply scheme. The present invention is suitable for measuring the pulse wave conducting time in operation condition, has raised measurement accuracy, low power consumption and reduced testee load, and is favorable to the real-time continuous measurement and monitoring of several sensing devices and several tested targets.
Owner:AVIATION MEDICINE INST AIR FORCE PLA +1
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