218results about How to "Reliable isolation" patented technology

A coupling circuit arrangement for data communication over a power line comprises a modulator / demodulator circuit for modulating data signals for transmission over the power line, and for demodulating signals which have been transmitted over the power line into data signals, a power supply circuit, and isolation means for providing galvanic isolation from the power line. The isolation means comprises light emitting elements and light detecting elements, which are arranged between the modulator / demodulator circuit and the power line. The isolation means may also be used to transmit a digital control signal which indicates the status of the power supply circuit or an over-temperature condition, or which is a transmit enable signal. The digital control signal may be encoded in the analog data signal by a digital shift in the DC bias level or by a complete removal of the DC biasing signal.

The invention relates to a protection configuration method of a flexible direct-current (DC) transmission system of a modular multiple-level converter, which comprises the steps of: using three layers of protection configuration, i.e., a submodule layer, a converter valve layer and a convertor station layer; setting a submodule layer protection function in a submodule controller; setting in a valve based controller (VBC) by the converter valve layer aiming at a failure protection function of a single converter valve; and realizing functions of failure protection of the converter station layer and a DC system in a system control protection equipment PCP (Primary Control Program). The method provided by the invention ensures that the flexible DC transmission system can rapidly carry out a protection action under an abnormal working condition, prevents overstress from continuously developing and isolates a failure assembly.

A system and method for isolating the execution of a plurality of applications. The applications may utilize or share one or more “original” classes. Only one copy of each original class is maintained, regardless of how many applications utilize it. Static fields are extracted from the original classes. A separate copy of the static fields is created for each of the utilizing applications. A static field class which includes instance fields corresponding to the static fields may be created, wherein each instance of the static field class corresponds to one of the utilizing applications. Access methods for the one or more static fields may be created, wherein the access methods are operable to access the corresponding separate copy of the static fields based upon the identity of the utilizing application. A single access methods class may be created for each original class, wherein the single access methods class includes the access methods for accessing the extracted fields from the original class. The method and system may be optimized by exempting from extraction static fields that are classified as secure for utilization by the plurality of applications without inter-application interference. The secure set of static fields may include final static fields of primitive types, final static strings, immutable arrays of primitive types, and / or other appropriate fields.

The invention relates to a multimode organic filter / polymer composite damping material and a manufacturing method thereof, relates to the field of soundproof materials, aims to solve the problems that in the prior art high efficient soundproof materials do not have a prominent effect, and generate harmful gas, which harms the human health; and provides a multimode inorganic filler / polymer composite damping material. The damping material comprises the following materials: thermoplastic resin and an inorganic filler, which has been subjected to a surface treatment with a coupling agent processing fluid; wherein the inorganic filter accounts for 15 to 80 wt% of the total weight of the damping material, and the balance being thermoplastic resin. In the damping material, the binding between each particle is abnormal, thus the internal friction between incident sound waves in this structure is effectively increased, thus a relaxation effect is generated, and the sound is absorbed. Fillers with different particle sizes are corresponding to sound waves in different bandwidths or frequencies, so sounds in different frequencies can all be absorbed by the damping material, and moreover the damping material has a good soundproof effect, and is suitable for promotion and application.

The invention relates to the field of products of sound insulation material, solves the problems in the prior art that the sound insulation material is poor in sound insulation effect, is incomprehensive in high and low frequency sound insulation, causes pollution and is easy to age, and provides an efficient sound insulation material and a manufacturing method thereof. The efficient sound insulation material includes a sound insulation layer, a sound absorption layer, and a bubble layer, wherein the bubble layer is located between the sound insulation layer and the sound absorption layer. The sound absorption layer is made of a sound insulation compound, and the sound insulation compound is prepared by raw materials of the following substances: a thermoplastic resin, inorganic fillers, and a foaming agent, wherein the inorganic fillers account for 15-80wt%, the foaming agent accounts for 5-15wt%, and the rest is the thermoplastic resin. In the efficient sound insulation material, the fillers with different particle diameters correspond to sound waves of different wave bands or frequencies, and thus consumption of sound energy of different frequencies is relatively comprehensive, and the sound insulation effect is good, so the sound insulation material is suitable for popularization and application.

The present invention provides a multi-level model-based intelligent agent diagnosis system and method for computer-controlled machinery operative to reduce the complexity typically associated with conventional model based diagnostic systems. The system utilizes a plurality of intelligent agents arranged in a plurality of physically hierarchical layers such that the tasks associated with accomplishing model based diagnosis are distributed amongst the intelligent agents if each layer wherein information gathered from a first lower level intelligent agents is processed by at least one other higher level to realize system fault diagnosis. The system provides increased processing speed of modeling and / or model identification such that faster and more accurate failure isolation and identification is accomplished.

A valve assembly and method of actuating a valve blade in a processing chamber through the use of magnetic force coupling is disclosed. The valve assembly comprises a valve rod for imparting a reciprocal motion to a valve blade which opens and closes a valve, the valve rod having at least one magnet mounted thereupon. A housing seals the valve rod and valve blade from the ambient, and an actuator rod in the ambient, having at least one complementary magnet mounted thereupon, aligns with the magnet on the valve rod to form a magnetic coupling through the housing. An actuator mechanism then provides a reciprocal motion to the actuator rod, which transfers the motion through the magnetic coupling to the valve rod and valve blade. Multiple actuator mechanisms can also be employed to vary the force applied to the valve blade to further increase the life of the valve assembly while still providing a strong seal between processing chambers. The design allows for very high speed operation of the valve with low maintenance costs.

The invention discloses a fault diagnosis comprehensive positioning method for an intelligent distribution network, and belongs to the field of fault monitoring. Based on a fault indicator, a wirelesscommunication technology and a ground fault line selection technology, the method comprises the following steps: monitoring zero-sequence voltage of a transformer neutral point in real time, startingzero-sequence fault diagnosis when detecting that a zero-sequence voltage change value exceeds a preset value, and identifying whether the zero-sequence voltage change value is a single-phase grounding fault; if the zero-sequence voltage change value is single-phase grounding fault, performing grounding line selection through a fault diagnosis device in a station, and positioning the grounding fault on a certain phase of a certain line; when the single-phase earth fault is judged to be a stable fault, recalling the real-time current data of the fault indicators on the fault phase line, comparing the signals collected by the fault indicators, comparing the difference of the real-time current data before and after a fault point, judging the two fault indicators with abrupt changes, and thendetermining the specific section of the fault. The method can be widely applied to the field of power distribution network operation fault monitoring and positioning.

The invention discloses a system and method for realizing the security storage and the access control of data. The system comprises an application server, a storage security gateway, a security strategy server and a backend storage system, wherein the storage security gateway is additionally arranged between the application server and the backend storage system so as to realize the partition, the isolation and the access control of data security domains. The storage security gateway and a storage virtualization gateway can synergistically work, and data can be stored in the manner of the security domains on an actual physical medium by utilizing a virtualization technique. When a data access request arrives at the storage virtualization gateway, the storage virtualization gateway can invoke the functions of the storage security gateway so as to realize the isolation and the access control of the data security domains. Because all data requests for access to the backend storage system can be processed by the storage security gateway, security control is guaranteed to be performed on the single path of data without being bypassed. In addition, security control is realized at the bottom layer of data access, so that attack means to data by upper application layers can be effectively avoided.

The invention provides a turn-to-turn zero-sequence differential protection method and device for the valve side winding of a series transformer. The turn-to-turn zero-sequence differential protectionmethod comprises the following steps: firstly calculating the starting threshold value and braking coefficient of zero-sequence differential current, then determining zero-sequence differential current starting criterions and valve side winding turn-to-turn zero-sequence differential protection criterions, and finally judging whether valve side winding turn-to-turn zero-sequence differential protection is of actions. In the turn-to-turn zero-sequence differential protection method for the valve side winding of the series transformer provided by the invention, when a small turn-to-turn fault occurs in the valve side winding, under the premise that the protection of a unified power flow controller is free of action, turn-to-turn protection can be accurately and rapidly acted, rapid isolation of the turn-to-turn fault of the valve side winding is guaranteed, the valve side winding is avoided from being damaged, and safe operation of the series transformer is guaranteed.

A transformer bobbin has a body with first and second ends spaced along a longitudinal axis. Conductive pins are mounted in the ends and dimensioned for electrical and mechanical connection with first and second wire windings received in the body. An opening in the body is dimensioned to receive a ferrous core, and an external winding surface on the body extends between the first and second ends. First and second margin barriers are provided inwardly of the first and second ends of the winding surface. The margin barriers have a height that extends a predetermined dimension that closely approximates the height of the first winding. The margin barriers electrically isolate the first winding from the second winding that is thereafter received over the body. Preferably, at least one of the first and second margin barriers includes channels therethrough dimensioned to receive the first winding wire for connection with the pins.

The invention discloses a high-voltage power-taking and power-supply system based on a wireless electricity transmission technology. The high-voltage power-taking and power-supply system comprises a high-voltage line direct power-taking device, a high-power power frequency inverter system, a converting circuit, a wireless electricity transmission energy transmitting system, an energy receiving system and a load system, wherein the high-voltage line direct power-taking device is used for obtaining initial electricity of the system, the high-power power frequency inverter system is used for inverting the initial electricity into a power frequency alternating current, the converting circuit is used for converting the power frequency alternating current into an input voltage required by the wireless electricity transmission energy transmitting system, the wireless electricity transmission energy transmitting system is used for generating a high-frequency electromagnetism energy field, the energy receiving system is used for receiving the high-frequency electromagnetism energy field generated by the wireless electricity transmission energy transmitting system and converting the high-frequency electromagnetism energy field into high-frequency electricity, and the load system is used for receiving the high-frequency electricity, being matched with the electricity and supplying the electricity to loads. According to the high-voltage power-taking and power-supply system based on the wireless electricity transmission technology, the electricity can be directly taken from a high-voltage line and be supplied to on-line monitoring devices in a long-distance, high-reliability, high-insulation and continuous mode, the requirements of the devices for continuous power supply are met, the problem of insulation in high-voltage power supply is solved, and the high-voltage power-taking and power-supply system based on the wireless electricity transmission technology is convenient to install, stable and reliable in power supply and free of influences by changes of external environment.

The invention relates to a multifunctional measurement and control module based on a field bus, comprising a multi-path selection module, a signal conditioning module, an isolating and amplifying circuit, an A / D conversion and control module that are sequentially connected. An acquiring signal is input into the multi-path selecting module, then conditioned and converted by the signal conditioning module, sent to the isolating and amplifying module for isolation and amplification, and enters the A / D conversion and control module; a simulating signal is converted into a digital signal by the A / D conversion; and a signal processed by the control module is output by a communication interface with field bus function. By matching the multi-path selecting module with the signal conditioning module, each channel can access a plurality of signals, can be matched with a programmable amplifier by the introduction of a high-accuracy reference voltage, and can be used for measuring the current real amplification factor, thereby eliminating the drift caused by the null drift of the amplifying module.

The present invention concerns a method and device for the training of human vision. In particular, the invention involves the use of multimodal stimulation and principles of biofeedback to aid in the detection of visual targets. The intended population to benefit from this device are those who have experienced stroke or compromise to areas of the visual system responsible for conscious sight. Such patients may show either visual inattention or partial to complete blindness in both eyes. Biofeedback is also used to assist in training of sight.

An electrical isolation barrier for use in a Data Access Arrangement uses a high frequency (HF) transformer 24 to provide isolation. An input signal, which may be analog or digital, is connected to a modulator. The analog output of the modulator is connected to the input of the HF transformer. The output of the HF transformer is connected to the input of a demodulator. Simple amplitude modulation can be used in the modulator to modulate the input signal to the frequency range of operation of the HF transformer. A simple low pass filter may be incorporated in the demodulator to remove harmonic distortion caused by the HF transformer. The output signal of the demodulator is substantially the same as input signal.

A casing includes half members coupled with each other. The half members in cooperation define an inner space for containing a storage device. A removable storage device unit is thus established. A guide surface is defined on the casing. The guide surface is related to a predetermined guide located on an enclosure defining an interior space for containing the casing. The guide surface serves to guide movement of the casing with respect to the enclosure. The removable storage device unit can easily be detached from the enclosure without disassembling the enclosure. The removable storage device unit can easily be carried. The user is allowed to utilize the single storage device common to a plurality of or various electronic apparatuses, for example. This enables a facilitated exchange of data between the electronic apparatuses.

The invention discloses a multi-tenant resource management method. The method comprises following steps: when there is a newly increased tenant, distributing a special data center node to the tenant, wherein the data center node provides all application systems demanded for processing services to the tenant; and distributing special physical resources to the data center node through a preset resource distribution algorithm. The invention also discloses a multi-tenant resource management device. According to the method and the device of the invention, different tenant data are in mutual independence; different tenants cannot invoke the data mutually; meanwhile, the technique complexity is reduced; and the stability is increased.

A lung isolation system configured for selective isolation and ventilation of the lung in conjunction with a standard endotracheal tube. The system includes an expandable bronchial isolation tube comprising a collapsible nitinol frame, a bifurcated adapter, and a steerable optical stylet.

The invention relates to a wireless drive system of a power switching device in the field of electric power and electronic technology. A driving signal wireless transmitting unit of the invention digitally encodes the driving signals of the power switching device and sends the digitally coded signals to a driving signal wireless receiving unit in a wireless form; the driving signal wireless receiving unit receives the digitally coded signals of the driving signals and converts the digitally coded signals to digital signals which are decoded to obtain driving signals and then the driving signals are sent to a power amplifying circuit in the power transmission unit for power amplifying; the power transmission unit first converts a direct current power supply to a high frequency alternating current power supply and transmits the power supply through isolation of two stages of transformation, then the direct current power supply is obtained through rectification to supply power to the power amplifying circuit, and the driving signals sent from the driving signal wireless receiving unit are power amplified. The wireless drive system can realize reliable driving of power switching device, reliable isolation of low voltage side and high voltage side, and reduce the number of the direct current power supply.

A thermal detector includes a substrate, a support member, a spacer member, a thermal detection element, a detection circuit and a wiring part. The spacer member supports the support member over the substrate with a cavity part being formed therebetween. The thermal detection element is supported on the support member. The wiring part connects between the detection circuit and the thermal detection element, and has first through third conductive layer parts and a plurality of plugs. The first conductive layer part includes at least one layer disposed in the substrate. The second conductive layer part includes at least one layer disposed in the spacer member. The third conductive layer part includes at least one layer supported by the support member. The plugs respectively connect adjacent layers of the first conductive layer part, the second conductive layer part and the third conductive layer part, in a thickness direction of the substrate.

The invention relates to the field of energy storage systems for lithium batteries, in particular to a mobile energy storage control system for lithium batteries. The mobile energy storage control system comprises a solar panel set, a bus unit, an access switching unit, an energy storage chopping unit, a battery equalizer, an energy storage lithium battery set and a system controller, and is characterized in that a channel of control contact points of the access switching unit is sequentially connected with a bidirectional inverter and an electric switching unit, and the electric switching unit is respectively connected with a supply network, an electric load and the system controller; and a system computer in the system controller is respectively connected with the bus unit, the access switching unit, the bidirectional inverter, the energy storage chopping unit, the battery equalizer, a battery temperature detecting unit and the electric switching unit by Profibus-DP (decentralized periphery) and Modbus field buses to form an intelligent network control system. Compared with the prior art, the mobile energy storage control system has the advantages that photovoltaic power generation is integrated with off-peak electricity utilization, photovoltaic power generation is implemented and generated electricity is stored in daytime when sunlight is sufficient, and off-peak electricity is stored at night.

An apparatus for isolated transformation of a first voltage into a second voltage includes a motor (15), which is powered by the first voltage and whereof the motor drives a generator (16) utilizing a coupling means, for example, a shaft (17) or a belt drive, whereof the rotation of the shaft generates the second voltage off the generator (16). At least a portion (18) of the coupling means, for example, the shaft (17), is made of an electrically isolating material featuring a dielectric constant of approximately 1 and is of such a dimension that the capacitance of the generator related to Ground is at maximum 10 pF, preferably 5 pF. The apparatus is in particular suited to provide a voltage for supply of electronic measurement devices, which are used for impedance measurements at the human body because the apparatus meets requirements for medical safety, keeps the electrical capacitance of the measurement circuit powered by the generator at a minimum, does not transform disturbances present at the first voltage to the measurement circuitry, and doesn't generate disturbances by itself.

The invention discloses a heat insulation wall. A wall inner plate, a heat insulation layer, a thin iron plate layer, a corrugated iron plate layer and a thick iron plate layer are arranged from the interior of the house to the exterior of the house sequentially; all layers are fixedly connected with each other; an air inlet channel and an air outlet channel are formed between the lower side of the corrugated iron plate layer and the exterior of the house, and between the upper side of the corrugated iron plate layer and the exterior of the house respectively; convex-concave grooves of the corrugated iron plate layer are communicated with the air inlet channel and the air outlet channel; and a plurality of through air holes are formed on the part of the thick iron plate layer adjacent to the air inlet channel. In an energy-saving heat insulation house, a roof frame consists of profile steel; a solar water heater is arranged on a roof; a heat collector of the solar water heater is used as a roof tile of a sunny slope or is arranged below and close to the roof tile of the sunny slope; the shape and the size of a water tank adapt to the inner outline of a ridge; and the water tank is positioned in the ridge. The heat insulation wall has the high heat insulation and ventilation performance, and the heat collector of the solar water heater is used as the roof tile of the sunny slope or is arranged below and close to the roof tile of the sunny slope so that the solar energy heat absorbed by the roof can be fully utilized.

The invention relates to a wound closure device, in particular to a wound closure device in the field of skin wound suture. The invention aims to provide a wound closure device comprising a window, apuller and a fixer, wherein the window comprises a window body wall, a window top wall and an opening / closing window arranged on the window top wall. The puller is arranged on both sides of the window; one end of the puller is connected with the fixer and the other end is connected with the window; and the fixer is provided with a fixed adhesive layer facing the bottom surface of the skin. The wound closure device of the invention enables the functional modules required for wound treatment to reliably, continuously and directly continue to act on the wound healing area, effectively avoiding the seepage fluid accumulation to cause the suture device to fall off, secondary wound infection, wound suture failure, wound malformation healing, and better wound physiological regeneration healing.

The invention relates to a substrate integrated multi-mode filter which is based on a square high-order mode cavity, the upper surface and the lower surface of a medium substrate (1) are respectively coated with an upper surface metal (7) and a lower surface metal (8), a metalizing through hole array (2) penetrates the medium substrate (1), the upper surface metal (7) and the lower surface metal (8); a first inductive column (3) and a second inductive column (4) which can play the roles of regulating the eigenfrequency of different modes and coupling between the modes are positioned in a square cavity which is surrounded by the metalizing through hole array (2); a first metal column inductive window (7) and a second metal column inductive window (8) are respectively arranged on the adjacent two sides of the square cavity, the cavity can realize the coupling of the input and the output of energy by metal column inductive windows; a first metalizing through hole array (5) and a second metalizing through hole array (6) are respectively positioned at the first metal column inductive window (7) and the second metal column inductive window (8) to be corresponding to the input and the output of the cavity of the filter, which are connected with an external circuit.

The present invention relates to a power factor correction circuit for compensating distortion of an input current. According to the exemplary embodiment of the present invention, a turn-on interval length of a switch is controlled according to a voltage induced in a secondary winding wire of an inductor since the voltage induced in the secondary winding wire has information on an input voltage when the switch is turned on. The turn-on interval length of the switch is reduced when the input voltage is great and is increased when the input voltage is low. Therefore, distortion of the input current may be compensated by controlling the turn-on interval of the switch according to the voltage induced in the secondary winding wire without using an additional circuit for sensing the input voltage.