492 results about "Electromagnetic system" patented technology

The wireless electrostatic charging and communicating system includes an electrostatic reader, an electrostatic charger and an electrostatic rechargeable device or electrostatic transceiver such as such as a smart card or radio frequency identification (RFID) card without requiring physical contact to electrodes. The electrostatic system is capacitance based and the charging and communicating occurs over capacitively coupled electrostatic electrodes or electrostatic electrodes. The electrostatic rechargeable device or transceiver includes a charge receiver and an energy storage means, for being charged or communicated with in the electrostatic system. The energy storage means may be any energy storage device including a rechargeable battery or capacitor. In a second embodiment, the electrostatic rechargeable device or transceiver includes an electrostatic charge receiver and an electromagnetic charge receiver with the energy storage means so that it may be alternatively charged or communicated with in an electrostatic system or an electromagnetic system for compatibility in either system.

Spiral coils generate very powerful electromagnetic fields by operating with two different but simultaneous resonant behaviors. Quarter-wave resonance is established by adjusting the frequency (and wavelength) of a radiofrequency (RF) voltage source until the length of the spiral conductor is equal to ¼ of the wavelength of the alternating voltage. This generates an electromagnetic standing wave with at least one peak node and at least one null node. Inductive-capacitive (L / C) resonance is established by optimizing the thickness and width of the wire ribbon used to make the spiral coil. When inductance and capacitance are balanced, the current response will synchronize with the voltage input, creating in-phase behavior, minimal total impedance, and maximal power output. If two such coils are placed near each other, they will create an extremely powerful electromagnetic field between them, which can promote chemical and plasma reactions involving charged particles such as ions or plasma particles, possibly including nuclear fusion reactions.

The invention provides a magnetic coupling resonance-typed wireless energy transmission device, relating to the field of wireless energy transmission and solving the shortage that the prior art can not carry out the transmission with the barrier or has short transmission distance. The magnetic coupling resonance-typed wireless energy transmission device consists of an energy emission source and an energy receiver; by virtue of the two electromagnetic systems with the same special resonance frequency, with a certain distance, the energy transmission is carried out as the resonance is generated owing to the identical vibration frequency. The energy emission source consists of a magnetic field resonance excitation and driving circuit and a resonance emission circuit; the resonance emission circuit consists of a resonance emission coil and a resonance emission capacitor; the energy receiver consists of a resonance receiving circuit and a high-frequency rectifier circuit; the resonance receiving circuit consists of a resonance receiving coil and a resonance receiving capacitor; the magnetic field is generated by the resonance emission coil; the resonance receiving coil and the magnetic field have the same oscillation frequency and generates the magnetic resonance; the energy in the resonance receiving coil is continuously collected and can be subsequently provided to the loads through the high-frequency rectifier circuit. The magnetic coupling resonance-typed wireless energy transmission device has the advantages of long transmission distance and no barriers.

The present invention is a method and apparatus used to transmit information to the surface from a subsurface location during the process of drilling a bore hole comprising a pressure pulse generator or “pulser” coupled to a sensor package, a controller, an active electromagnetic system for subsurface collision avoidance, and a battery power source all of which reside inside a short section of drill pipe close to the bit at the bottom of the bore hole being drilled wherein the apparatus or “MWD Tool” can be commanded from the surface to make a measurement of desired parameters and transmit this information to the surface by encoding data in pressure pulses generated by a pulser valve that includes a stator and a rotor which may be open and closed to create pressure pulses.

The invention provides an electromagnetic system for detecting a distance between adjacent wells while drilling, which is capable of providing accurate guide measurement and calculation for the control of well tracks of wells with complex structures, such as a cross well, a U-shaped communicated well, a dual-horizontal well, an accident rescue well and the like. The electromagnetic system for detecting the distance between adjacent wells while drilling mainly comprises a magnetic pipe nipple, an electromagnetic measuring instrument and a method for calculating the distance between adjacent wells, wherein the magnetic pipe nipple is a hollow cylinder with API standard ports at the two ends consisting of a non-magnetic drill collar and a plurality of permanent magnets, and is used as a signal source for an electromagnetic guide system; the measuring instrument mainly comprises an underground searching tube and a ground system, and is mainly used for detecting a magnetic vector signal ofthe magnetic pipe nipple and for sending data to a computer through an RS-232 interface; and the computer processes and analyzes measured information by using the method for calculating the distance between adjacent wells so as to convert the measured information of a drill position into readable data for engineers. The electromagnetic system for detecting the distance between adjacent wells while drilling has a simple structure and convenient use, and provides an effective high and new technological measure for the detection and control of the distance between adjacent wells with complex structures.

A magnetic coupling resonant wireless energy transmission device provided with an intensifier relates to the field of wireless energy transmission, and aims at intensifying the transmission distance of existing magnetic coupling resonant wireless energy transmission technology. The invented transmission device consists of an intensified emission source and an energy receiver; the two electromagnetic systems with the same specific resonant frequency are used for energy transmission owing to the resonance caused by the same vibration frequency, when the two systems are separated from a certain distance. An intensifier is added in the intensified emission source, strong magnetic coupling is produced between the intensifier and a resonant emission circuit, the intensifier has the functions of reducing impedance, modifying transmitted waveforms, intensifying resonant current, emitting modified alternating magnetic fields outwards, resonance ia produced between the intensifier and the energy receiver. Owing to the adding of the intensifier, the energy transmission distance of the technology is intensified greatly, is about five times longer than the former and is probably even longer.

The invention discloses a speed measurement method for vehicles based on rail deformation / stress parameters. In the method, deformation sensors are distributed on two measurement points which are distributed along the direction of train movement and have the distance of L to measure the deformation sensing of different measurement points under the same wheel pair, and thus the time of the train wheel passing through the distance of L, or the deformation sensing at the same measurement point of the rail under different wheel pairs is measured; the time difference of deformation sensing is measured to obtain the time of the train wheel passing through the standard wheel distance, and thus the train running speed is obtained. With the invention, the problem of low reliability existing in the current train-ground communication can be avoided. At the same time, the sensors adopt electric strain foils or optical fiber gratings, not only the interference of weather can be avoided, but also the interference on the existing electromagnetic systems at roadside can be avoided.

The invention relates to a road-vehicle interactive wireless charging system for an electric automobile. The road-vehicle interactive wireless charging system comprises a power energy transmitting end and a power energy receiving end, wherein the power energy transmitting end comprises a power energy source, a power energy storage module, a transmitting end controller and a first electromagnetic system; the transmitting end controller comprises a pressure sensor, a digital processing core module, a driving chip, and a heavy-power MOSFET (Metal Oxide Semiconductor Field Effect Transistor) chip or IGBT (Insulated Gate Bipolar Transistor); the digital processing core module comprises a communication module, a pressure acquisition module and a calculation module; the first electromagnetic system comprises a first resonant capacitor and a primary coil; the power energy receiving end comprises a second electromagnetic system, a receiving end controller and a load; the second electromagnetic system comprises a second resonant capacitor and a secondary coil; and the receiving end controller comprises a high-frequency rectifier bridge and an LC (Liquid Crystal) filtering circuit. The road-vehicle interactive wireless charging system disclosed by the invention has the advantages of simple structure, mounting and arrangement and small size; and the road-vehicle interactive wireless charging system can be used for charging a battery of the electric automobile without staying the electric automobile or influencing normal driving of the electric automobile and can be widely applied to various electric automobiles.

The invention relates to mechanical equipment, in particular to an engine which repeatedly uses compressed-air power to work. The engine consists of a compressed air pressure structure, a mechanical structure, a charging, supplementing and electromagnetic system structure and an engine working process structure. The engine has the structural characteristics of repeatedly using compressed-air power to do work, can be matched to drive various maneuvering vehicles and transportation tools, also can be matched with a power generator to form a unit to generate power, and achieves the purposes of engine work, long endurance, energy conservation, environmental protection, push of traffic and transportation industry, and sustainable development.

The invention relates to the field of intelligent control over equipment, in particular to an intelligent alternating current contactor capable of being controlled digitally and dynamically in the whole process. A digital chip is used for realizing closed-loop control over the speed in an attraction process of the alternating current contactor (based on coil current falling edge slope), impact energy of a movable / static iron core and a movable / static contact is controlled directly, and bouncing of the iron core and the contact in the attraction process can be reduced substantially; the attraction and supporting process works in a current closed loop chopping mode, chopping frequency is adjusted automatically, and voice frequency noise is prevented from occurring; meanwhile, attraction and supporting currents can be kept stable in a wide input voltage range, and therefore energy-saving silent closed loop operation can be realized; a disjunction process applies direct current negative voltages to the two ends of a coil after rectification and filtration, so that the coil current is made to descend quickly, an electromagnetic system is demagnetized quickly, and the contact is disjunctive quickly at a moment before zero; the intelligent alternating current contactor also has a self correction function of zero-current disjunction, and therefore the problem that control over zero-current disjunction fails due to disperse movement of the contactor, abrasion of the contact and other factors can be solved.

A detector for a marine electromagnetic survey system includes a housing arranged to minimize turbulence when the housing is towed through a body of water, and to minimize motion of the housing in any direction other than the tow direction. The housing includes at least one of an electric field and a magnetic field sensing element associated therewith.

A multiple phase state near-field electromagnetic location and communication system includes a multiple phase state near-field transmitter, and a near-field locator receiver. The near-field transmitter is capable of operation in at least two states and each of these at least two states generates a state characteristic difference detected at the near-field locator receiver. The state characteristic difference may be employed for location determination, communication or both. The present invention is particularly well-suited for use in conjunction with a near-field electromagnetic ranging system. In further embodiments, a multiple phase state near-field electromagnetic location and communication process includes the steps of determining a transmission state for a near-field quadrature transmitter, transmitting a near-field transmission corresponding to said transmission state, receiving a near-field transmission corresponding to said transmission state, and determining a difference between at least two properties of said near-field transmission where the difference is characteristic of and corresponding to the transmission state.

Differences of electromagnetic (EM) properties between healthy and cancerous tissues allow detection of abnormal conditions occurring in a tissue of an animal, for example, intra-operative cancer detection. By using a time-varying EM field, electrical eddy currents are generated in the tissue sample, and assessed using phase-sensitive detection. In some aspects, a change in phase shift between the voltage in a receiver coil and the voltage in a driver coil provide a direct and immediate indication of differences in EM properties of specimens.

A bi-directional overrunning clutch assembly for engaging secondary driven shafts in a four wheel drive vehicle. The assembly includes a differential housing with a pinion input gear rotatably disposed within it that is engaged to a drive shaft. A bi-directional overrunning clutch housing is engaged to the pinion gear. A roll cage assembly is located inside the clutch housing. A pair of hubs are positioned within the roll cage assembly and connected to the secondary driven shafts. An electromagnetic system controls indexes the roll cage in a first direction relative to the clutch housing a first indexing device for coupling the secondary drive shaft to the secondary driven axles when four wheel drive is needed, and in an opposite direction using a second indexing device when an engine braking condition is needed. A spring assembly is preferably used to bias the roll cage back to a neutral position.

An apparatus constructed which accurately guides and adjusts a cylinder axially in a rotary printing machine. For this purpose, an electromagnetic system, with which an axial force can be applied to the cylinder, is arranged on the frame of the rotary printing machine. The cylinder is mounted in mountings that permit axial displacement.

A relay having a base on which is arranged an electromagnetic system that actuates at least one pair of closing contact springs and at least one pair of opening contact springs where actuation is effected by a slide having actuation lugs located at different heights relative to the fixing of the active spring contacts for actuating the active opening spring contacts at a height different from that of the active closing spring contacts so that the characteristic curve of the magnetic system can be better adjusted to that of the spring contacts.

The invention discloses an electromagnetic mechanical paw with adjustable clamping force. The electromagnetic mechanical paw comprises a left paw, a right paw, a left permanent magnet, a right permanent magnet, an electromagnet, a single chip microcomputer and an electromagnet power supply circuit, wherein the left paw and the right paw are connected, have the same structure and are in bilateral symmetry; the left permanent magnet is arranged below the left paw; the right permanent magnet is arranged below the right paw; the electromagnet is arranged between the left permanent magnet and the right permanent magnet; the single chip microcomputer is connected with the electromagnet power supply circuit; and a current on the electromagnet power supply circuit can be adjusted. The invention further discloses an application method of the electromagnetic mechanical paw with adjustable clamping force. The method comprises the process of establishment of a resistance database of the electromagnetic mechanical paw and dynamic regulation in practical application. According to the electromagnetic mechanical paw, the current introduced into an electromagnet coil is controlled through changing the resistance of a programmable resistor, the grabbing clamping force of the paw can be controlled, an electromagnetic system is adopted, heavy air pumps and hydraulic devices are eliminated, and the size is decreased.

The invention discloses a magnetic suspension universal momentum sphere device and a realizing method thereof. The magnetic suspension universal momentum sphere device comprises a momentum sphere, a position control electromagnetic system, a rotation control electromagnetic system, a sphere body state detection system and a central control system, wherein the momentum sphere is used for rotation, the position control electromagnetic system is used for generating a magnetic force in any direction for the momentum sphere, the rotation control electromagnetic system is used for generating a rotating torque capable of rotating towards any direction for the momentum sphere, the sphere body state detection system is used for detecting the operation state of the momentum sphere and the central control system is used for controlling the electromagnetic system and the sphere body state detection system and receiving operation state data of the momentum sphere, detected by the sphere body state detection system. The momentum sphere is adopted for replacing a momentum wheel, therefore the magnetic suspension universal momentum sphere device is capable of realizing rotation in any direction; the rotating torque enabling the sphere body to rotate is generated through a rotating magnetic field, therefore, the magnetic suspension universal momentum sphere device realizes non-contact, non-resistance and accurate rotation control; and the sphere body is magnetically suspended through the magnetic force, therefore the friction force is thoroughly eliminated.

The invention relates to a novel design method of an intelligent alternating-current and direct-current electromagnetic apparatus. An open type background database including electromagnetic systems and contact systems of different structures, shapes and materials is set up, counter force systems and the contact systems are designed according to the needs of on-off currents for counter force and the shape of contacts, the electromagnetic systems meeting the needs are designed according to the counter force systems, and multi-physic-field coupling simulation analysis and structural optimization design are carried out; through multi-software united calling, a multi-physic-field coupling relation between an electric electronic circuit and an electromagnetic apparatus body is introduced into dynamic calculation, and unit time step length closed-loop simulation of a nonlinear time domain of an intelligent control module and the apparatus body is carried out; an arc magnetic fluid kinetic model is built, arc motion conditions under different breaking control schemes are analyzed by combining a dynamic grid technology according to the motion track of the contacts, meanwhile, a breaking process arc equivalent model is obtained according to the arc parameter distribution conditions under different contact strokes at different moments, and arc energy is analyzed. An integrated simulation system with process control and a multi-field coupling electromagnetic apparatus virtual prototype is really built.

The invention relates to a modularized T-type microwave switch, which comprises a circuit board group, an electromagnetic group, an armature group, a cover plate-armature group and a guide system. The circuit board group is fixed above the electromagnetic group, the electromagnetic group is fixed at the upper part of the cover plate-armature group, the armature group is fixed on a cover plate by an installation shaft, and the cover plate-armature group is fixed on the guide system. The electromagnetic group is formed by three electromagnetic modules; the armature group is formed by an armature, a driving plate, bolts, a fixing plate and the installation shaft; the driving plate is fixed below the armature by the bolts and the fixing piece, and the installation shaft is arranged in the central hole of the armature. The guide system is formed by a base, four coaxial connectors, three long reed groups and three short reed groups; and one group of long reeds and one group of short reeds, which are vertical to each other, conduct the corresponding coaxial connectors simultaneously, so as to form a T-type microwave accessing state. The microwave switch is low in driving power, the electromagnetic system is modularized, the assembly and production difficulty is low, the product structure rigidity is good, and the vibration-resistance and impact-resistance performances of the product are strong.

The invention discloses a full-automatic spot welding machine which comprises a machine frame, a welding machine body and a control screen. The welding machine body comprises an annular clamp rotary disc which is rotationally arranged on the machine frame. A plurality of clamp tables are arranged along the circumference of the clamp rotary disc. A contact feeding mechanism, a locking sheet feeding mechanism, a silver point feeding mechanism, a silver point welding mechanism, a coil feeding mechanism, a contact welding mechanism, a locking sheet welding mechanism and an unloading mechanism are sequentially arranged clockwise around the clamp rotary disc and each corresponds to the station of one clamp table. An unloading air cylinder is fixedly arranged inside the clamp rotary disc and is opposite to the unloading mechanism. Each clamp table is provided with a contact base, a locking sheet base and a coil holder, wherein the contact base is provided with a silver point sliding block. According to the full-automatic spot welding machine, full-automatic control is adopted, material blocking and leakage are effectively avoided, production efficiency is improved, the welding quality is higher, and a breaker electromagnetic system static contact holder can be welded at a time in a full-automatic manner.

A multiple phase state near-field electromagnetic location and communication system includes a multiple phase state near-field transmitter, and a near-field locator receiver. The near-field transmitter is capable of operation in at least two states and each of these at least two states generates a state characteristic difference detected at the near-field locator receiver. The state characteristic difference may be employed for location determination, communication or both. The present invention is particularly well-suited for use in conjunction with a near-field electromagnetic ranging system. In further embodiments, a multiple phase state near-field electromagnetic location and communication process includes the steps of determining a transmission state for a near-field quadrature transmitter, transmitting a near-field transmission corresponding to said transmission state, receiving a near-field transmission corresponding to said transmission state, and determining a difference between at least two properties of said near-field transmission where the difference is characteristic of and corresponding to the transmission state.

A relay capable of preventing large-current contact separation comprises a shell, a contact system, an electromagnetic system and pushing part, wherein the contact system, the electromagnetic system and the pushing part are arranged in the shell. The contact system comprises a static piece provided with a static contact and a movable contact spring provided with a movable contact; the movable contact spring is connected with the pushing part which is connected with the electromagnetic system, the electromagnetic system drives the movable contact spring to swing through the pushing part to have the movable contact and the static contact separated or jointed, the static piece is of a U-shaped structure, the static contact is arranged on the inner wall of the U-shaped structure, the movable contact spring extends into the cavity of the U-shaped structure, the movable contact is arranged corresponding to the static contact 106, and the direction of electrodynamic force F is the direction from the movable contact to the static contact when the contact system is closed. The relay is simple in structure and low in cost; by the arrangement of the static piece of the U-shaped structure, the electrodynamic force F is enabled to push the movable contact to press the static contact when the contact system is closed, and problems about the contact separation and bouncing of the contacts during large current can be effectively solved.

The invention discloses a relay contact structure capable of reducing dithering. The relay contact structure comprises a movable contact piece, a movable contact point, a fixed contact piece and a fixed contact point, and is characterized by being provided with one or more permanent magnets which are fixed on the back of the movable contact point or a place in rigid connection with the movable contact piece, and one or more permanent magnets which are fixed on the back of the fixed contact point or a place in rigid connection with the fixed contact piece. Because the relay contact structure is connected with one or a group of the permanent magnets with opposite polarities, when an electromagnetic system of a relay makes the contact points of a contact be in contact with or separate from each other, the dithering is effectively damped, and the relay contact structure can be used for manufacturing various relays with less dithering, high efficiency, low cost and small volume.

A bi-directional overrunning clutch assembly for engaging secondary driven shafts in a four wheel drive vehicle. The assembly includes a differential housing with a pinion input gear rotatably disposed within it that is engaged to a drive shaft. A bi-directional overrunning clutch housing is engaged to the pinion gear. A roll cage assembly is located inside the clutch housing. A pair of hubs are positioned within the roll cage assembly and connected to the secondary driven shafts. An electromagnetic system controls indexes the roll cage in a first direction relative to the clutch housing a first indexing device for coupling the secondary drive shaft to the secondary driven axles when four wheel drive is needed, and in an opposite direction using a second indexing device when an engine braking condition is needed. A spring assembly is preferably used to bias the roll cage back to a neutral position.

The invention relates to a real-time temperature rise measurement method of an electromagnetic system of a low-voltage apparatus based on finite element analysis. The real-time temperature rise measurement method comprises the following steps that a temperature field distribution diagram of the electromagnetic system is obtained through finite element simulated analysis software, and a steady-state average value of the highest temperature inside a coil and the temperature on the surface of the coil is obtained under the different control voltages by calculation; the steady-state average value is compared with a steady-state value, measured in the given control voltage test, of the temperature on the surface of the coil, and correctness of a model is verified; a mathematical model of the highest temperature inside the coil and the temperature on the surface of the coil of the electromagnetic system of the low-voltage apparatus under the different control voltages is built, and the corresponding relation is found; the control voltage of the electromagnetic system of one low-voltage apparatus is measured, the temperature on the surface of the coil of the electromagnetic system is measured, the corresponding relation between the highest temperature inside the coil and the temperature on the surface of the coil under the control voltage is taken out, and the highest temperature inside the coil is calculated out. The real-time temperature rise measurement method can obtain the highest temperature rise of the coil of the electromagnetic system, directly judge the running state of products and break through the limitation that an existing measurement method only can measure the surface temperature and the average temperature.