1867 results about "Electromagnetism" patented technology

Systems and methods of delivering and retaining a leadless medical implant to tissue, wherein a docking base and the implant are sequentially delivered to an implantation site. In a first stage, the docking base is delivered and deployed into tissue at an implantation site. In a second stage, the implant is navigated through the vasculature and coupled to the docking base. Various mechanisms for navigating the implant to the previously implanted docking base and coupling the implant thereto are described. Navigational mechanisms include advancing the implant over a proximally extending wire portion that is releasably attached to the previously implanted docking base, utilizing fluoroscopic visualization to guide the implant to a previously implanted docking base that is at least partially radiopaque and utilizing electromagnetism to guide the implant to a previously implanted docking base that is electro-magnetizable.

Systems and methods of delivering and retaining a leadless medical implant to tissue, wherein a docking base and the implant are sequentially delivered to an implantation site. In a first stage, the docking base is delivered and deployed into tissue at an implantation site. In a second stage, the implant is navigated through the vasculature and coupled to the docking base. Various mechanisms for navigating the implant to the previously implanted docking base and coupling the implant thereto are described. Navigational mechanisms include advancing the implant over a proximally extending wire portion that is releasably attached to the previously implanted docking base, utilizing fluoroscopic visualization to guide the implant to a previously implanted docking base that is at least partially radiopaque and utilizing electromagnetism to guide the implant to a previously implanted docking base that is electro-magnetizable.

Oil color and luster acid value integrated automatism detection instrument and its method based on computer visual, it relates to the oil detection field. It solves the disadvantage that not integrated, big error, not automatism in the exist technology. The CCD numeral camera links with the PC, the PC outputs the signal to the control instrument and the locale technology parameter adjustment control groupware separately, the control end of the control instrument links with the controlled end of the execute setup, the light source, CCD numeral camera and the sample bottle which is set in the electromagnetism beater are set in the same axes and set in the illumination box. The steps are: firstly, start up and set the parameter; value whether detect the acid value, if it detects, collects the oil sample and add in reagent, then titrates liquid collects the image to value whether reach the end point, if it does not, titrates again, if it reaches, stop titrating and calculates the acid value, detects twice and calculates its average value and output; if it is not, detects the color and luster, compares the standard image data and the collection image data twice, and output the data. This invention based on equipment, its error is small, and the veracity and reliability is high.

The invention discloses a diamond-based NV ^‑ A nanoscale three-dimensional magnetic resonance molecular imaging device for color centers, comprising: a glass base; a laser, arranged inside the glass base, for emitting laser light to the outside; containing NV ^‑ The diamond with the color center is arranged on the upper surface of the glass base, and the laser emitted by the laser is directly irradiated to the diamond; the microwave pulser is used to input microwave pulses to the diamond; the microscope objective lens is used to make the NV of the diamond ^‑ Fluorescence from the color center is emitted outward through the microscope objective; a monochromatic filter for filtering the NV of the diamond ^‑ Fluorescence from color centers; nanoconvex lenses that filter the NV of the diamond ^‑ The fluorescence emitted by the color center is further concentrated; the distributed optical imaging lens is used to realize the imaging function; the packaging device is used to realize the functions of stable temperature, electromagnetic shielding and isolation protection.

The invention publishes a wave guide array antennas manufacture method of high gain crewel polarized or the double circular polarized, which relates to a wave guide array antennas manufacture technique in the correspondence broadcast and measure-control domain. The invention has designed the radiation level, the horizontal polarization or the circular polarization feed wave guide level, the perpendicular polarization feed wave guide level, the perpendicular polarization feed wave guide lap, the feed way of using the square or the circular waveguide resonant cavity, has solved the receive and launch of the double polarized electromagnetism signal; The horizontal polarization uses the coupling feed way and the perpendicular polarization uses the direct feed way, completes the separation of the two polarized components, simultaneously may realizes the double circular polarized work. The invention has the double polarized radiation, the high feed efficiency, compact structure, low processing cost and so on merits, is specially suitable for the manufacture of each kind of satellite communication or single control station antenna which works in the double thread polarization or double circular polarized application situations.

The invention relates to a method for monitoring the circumferential strain of a casing by applying optical-fiber grating sensors, which mainly solves the problem that an electric-resistance strain gauge adopted of the current technology for monitoring the circumferential deformation of the casing is easy to be affected by electromagnetism in a well and corrosion, thus causing a measured circumferential strain signal of the casing to be inaccurate. The method is characterized in that: the optical-fiber grating sensors are arranged outside the casing along the circumferential direction of the casing, wherein, a plurality of optical-fiber grating sensors are evenly arranged around the casing; sections of adjacent intervals form a certain angle; an optical-fiber temperature compensating sensor is arranged in a position at a corresponding distance away from the group of sensors; the optical-fiber grating sensors are applied to monitoring the circumferential deformation and stress status of the casing within certain ranges; meanwhile, the temperature compensating sensor is applied to serving the temperature compensation and temperature monitoring in the well of the strain sensor; the sensors transmit underground signals to the ground by a transmission optical cable; and the signals can be transformed into the circumferential strain information of the casing after a demodulation instrument obtains the signals and carries out secondary treatment. The method is characterized by not being affected by the underground electromagnetism.

A module levitation control method for the frequently conducting electromagnetic-type low-speed magnetic levitation train features that a levitation control system has only one levitation controller consisting of signal processing unit, A/D converter, clock signal generator, master DSP unit, PWM wave generator and auxiliary DSP unit. Said method includes such steps as measuring the levitation states of ends A and B of a module by two levitation sensors, calculating their control values, and controlling the current values of electromagnets A and B and in turn their electromagnetic forces, so ensuring the gap between module and track to be constant.

The invention discloses a minitype composite vibration power generator belonging to the field of minitype power technology and energy-saving technology. The minitype composite vibration power generator is a cantilever beam vibration power generator compounded by piezoelectricity and electromagnetism and mainly comprises an insulating shell, a piezoelectric cantilever beam, a permanent magnet and an inductance coil, wherein the piezoelectric cantilever beam consists of a piezoelectric sheet and a supporting substrate; the piezoelectric sheet is bonded on the supporting substrate; one end of the supporting substrate is fixed on the insulating shell; the permanent magnet is bonded with a free end of the piezoelectric cantilever beam; and an inductance coil is arranged right above the permanent magnet. Under the resonant state, the power generator synchronously outputs the piezoelectric current and the electromagnetic current; the output power is improved within the finite volume; furthermore, by adopting the structure of dispersing mass blocks, the energy collecting density is improved, and the working frequency scope is enlarged simultaneously.

This disclosure relates in general to a new and improved electric motor/generator, and in particular to an improved system and method for producing rotary motion from a electro-magnetic motor or generating electrical power from a rotary motion input by concentrating magnetic forces due to electromagnetism or geometric configurations.

The invention provides a touch screen, a manufacturing method and a display device, and relates to the technical field of touch technology. Working at the same time or working independently of original chirography electromagnetism handwriting and capacitance touch can be achieved. The market requirements of lightness and thinness can be met when the touch screen is used for the display device. The touch screen comprises a base plate, a plurality of first capacitance touch electrodes which are parallel with each other and are arranged on the same side of the base plate, a plurality of first electromagnetism touch electrodes which are parallel with the first capacitance touch electrodes, a plurality of capacitance touch electrodes which are crossed with the first capacitance touch electrodes and are parallel with each other, a plurality of second electromagnetism touch electrodes which are crossed with the first electromagnetism touch electrodes and are parallel with each other, and a protective layer arranged on the uppermost side. Different electrodes are not in electric connection with each other. The touch screen, the manufacturing method and the display device are used for manufacturing electronic equipment with a touch function.

The invention discloses a controllable electromagnetic mixed coupling coaxial cavity filter, comprising a conductor housing with two or more resonant cavities opened inside, the top of which is sealed by a conductor cover board and which is provided with a through hole; an input/output device penetrates through the through hole on the conductor hosing; bottoms of two or more conductor resonators are fixed to the conductor housing in contact with the guide housing to form short circuit; the conductor cover board opposite to the tope of the conductor resonator is provided with a tuning screw; an electromagnetic mixed coupling control component is arranged between two adjacent guide resonators which need electromagnetic mixed coupling. The invention accomplishes elliptic filter characteristic with a coaxial cavity filter only with main coupling path, which is provided with the following advantage of small volume, low cost, little insertion loss and nonsymmetrical response.

The invention discloses a geophysical exploration device and the method which combines the nuclear magnetic resonance and the transient electromagnetism. First to select the coupled device in the transient electromagnetism mode, and it lays the emission loop and the receiving loop to detect every measuring point in the detecting section and treat the transient electromagnetism data to find the low electrical resistivity point; then it changes to the nuclear magnetic resonance mode and lays the emission loop using the demarcated abnormal detecting point as the center, so it compares the detected data or the figure with the resistivity detected by the transient electromagnetism to judge the true or false of the detected resistivity. The invention can decrease the device cost and improve the detecting efficient and the precision.

An electrical switch for connecting and breaking a circuit including a connecting and breaking mechanism for connecting and breaking the circuit provided with at least a set of movable contacts and stationary contacts; a electromagnetism drive mechanism for controlling the contacts to be actuated so as to realize closed circuit; a housing for accommodating the movable contact and stationary contact; an arc-extinguishing mechanism disposed in the housing and corresponded to the movable and stationary contact; a case connected to a base for accommodating the electromagnetism drive mechanism; a bedplate associated with the case; and a holding mechanism disposed on the bedplate for holding the contacts to connect the circuit, the electromagnetic holding mechanism is electromagnetic and has a set of electromagnetic attracting mechanism in which the movable iron core is made to be a pothook or a baffle mechanism, the movable iron core is attracted so that the pothook or baffle keeps the switch closed by means of hitching or ramming the movable bolt when the electromagnetic attracting mechanism is powered on. The electrical switch has a structure in which it has a breakaway mechanism using winding, in which the remanence being small and the feedback force being large and the action of the limiting current being rapid, it can break the large short current as air switch.

Provided is electromagnetic protection film with the efficient shielding and electromagnetism absorption function. According to the electromagnetic protection film with the efficient shielding and electromagnetism absorption function, a release layer is arranged on the surface of a base material, a barrier insulating layer is arranged on the surface of the release layer, at least one metal layer is arranged on the surface of the barrier insulating layer, and at least one conductive electromagnetism absorption layer is arranged on the surface of the metal layer. The electromagnetic protection film with the efficient shielding and electromagnetism absorption function has the excellent capacity of shielding and reflecting an electromagnetic wave signal, can effectively absorb transmitted electromagnetic wave signals, can carry out comprehensive electromagnetism protection, and can be widely applied to portions, such as FPCs and hard PCBs, of mobile phones, cameras, medical apparatuses and instruments, notebook computers and the like, wherein the FPCs, the hard PCBs and the like need electromagnetism protection.

The invention discloses a method for measuring dielectric properties of diamond anvil cells in situ and belongs to the technical field of electromagnetic measurement under high voltage. The method comprises the following steps of firstly, assembling the diamond anvil cells, i.e. respectively forming round electrodes on the anvil surfaces of two diamond anvil cells, wherein an insulating layer is arranged on the inner side wall of a sample cavity of a composite insulating cushion; secondly, performing measurement, i.e. using a frequency response analysis meter to obtain relation patterns between an impedance real part and an impedance virtual part under different pressures; and finally, performing data processing, i.e. using Zview software and an electromagnetic metering formula related to dielectric properties to obtain the relative dielectric constant epsilon r, the dielectric constant real part epsilon', the dielectric constant virtual part epsilon'', the loss tan theta and the like. The shapes and the positions of the electrodes are fixed, and meanwhile, correction is performed because of the influence of fringe effect on a measuring result; and the prepared composite insulating cushion ensures complete insulation of the inner wall of a voltage cavity, so that the method for precisely measuring the dielectric properties of a material in situ under high voltage is realized.

An apparatus for measuring non contact type bearing start friction torque, is composed mainly of a loading cylinder (1), a force transducer (2), a loading housing (3), an air main shaft (5), an air bearing (6), a torque generator (7), a disk drive (8), an optoelectric transducer (9), an electrical system. The torque generator generates induction electromagnetic torque as drive torque, the optoelectric transducer monitors bearing start running state automatically; when being measured, the measured bearing is installed on the air main shaft, the disk drive is linked with the air main shaft and placed in the torque generator, the electrical system applies input power to the torque generator step by step after throwing axial load, when the induction electromagnetism drives the air main shaft to rotate through the disk drive, the optoelectric transducer matching-installed by the disk drive monitors the measured bearing from static state to start running state, and outputs signal to stop applying input power, and records current power value which is the start friction torque value of the measured bearing.

The invention provides a radial-tangential permanent magnet and electromagnetism mixed excitation generator, belonging to the technical field of an electrical appliance of a motor of an automobile. The excitation generator consists of rotors, a stator, a front end cover, a rear end cover and a rectifier, wherein the permanent magnet rotor and the brushless electrically-excited rotor are arranged on a shaft and commonly adopt one armature winding, a generated magnetic field is formed through combination in a parallel connection form in an air gap of the generator, and the size of the magnetic field formed by combining a permanent magnetic field and an electrically-excited magnetic field in the air gap of the generator is changed through regulating the size and the direction of the current passing the electrically-excited rotor, so as to ensure that the generator can output the direct current with stable voltage under the conditions of variable rotation speed and variable loads, thereby supplying electrical energy for electric equipment of the automobile.

A towrope type ocean controllable source electromagnetism and earthquake data collection system is composed of electric field sensors (non-polarized electrodes) distributed in three or more towropes uniformly or not, three-component induction coil type or three-component fluxgate type magnetic field sensors and sonic sensors composed of hydrophones or accelerometers and is used for measuring ocean three-component magnetic-field components, electric field components EX distributed in the cable direction, electric field components EY distributed in the vertical cable direction and ocean earthquake data. The towrope type ocean controllable source electromagnetism and earthquake data collection system can collect ocean electromagnetism data and ocean earthquake data in the time domain and the frequency domain at the same time, increase the collection quantity of ocean geophysics data of advancing construction at a time in a multiplying mode, effectively improve the target detection precision and explore and evaluate ocean mineral products, oil and gas resources and methane hydrates through combination and comprehensive application of ocean controllable source time-frequency electromagnetism and the earthquake exploration technology.

The invention discloses a method for reinforcing a water-bearing stratum of a floor of a coal seam and protecting the water-bearing stratum during reinforcement, which comprises the following steps: 1) geophysical prospecting coalface by using transient electromagnetism, and exploring the position of the water-bearing stratum; 2) distributing reinforcement drill holes according to the geophysical prospecting result, wherein an angle alpha between the reinforcement drill holes and the horizontal plane is a high inclination-angle as possible; 3) slip-casting by using cement paste through the reinforcement drill holes; and 4) controlling the pressure of boreholes to less than twice that of L8 limestone hydraulic pressure. The method thoroughly avoids the passive situation that forced cessation of production of the coalface is caused by groundwater burst fatalness.

The invention discloses an electromagnetism and magnetorheological fluid mixed shock absorber which can realize active control, is low in energy consumption and can recover energy. The electromagnetism and magnetorheological fluid mixed shock absorber comprises an upper shell and a lower shell which are connected together; an intermediate connecting plate is arranged at the connecting part of the two shells; a piston rod penetrates into the two shells and is connected with a piston body after penetrating through the intermediate connecting plate; the upper shell and the piston body are internally provided with an electromagnetic device respectively; the two electromagnetic devices are both connected with a control unit, and the control unit is connected with a signal end of a sensor; the lower shell at the lower part of the piston body is internally provided with a moving piston; a magnetorheological fluid cavity is respectively arranged between the piston shell of the piston body and the intermediate connecting plate and between the piston shell of the piston body and the moving piston, and the two magnetorheological fluid cavities are communicated by a communicating structure of the piston body; and a nitrogen cavity is arranged between the moving piston and the lower shell. The electromagnetism and magnetorheological fluid mixed shock absorber combines the advantages and disadvantages of the magnetorheological fluid semi-active control and the magnetism active control of the shock absorber, and has the advantages of being good in shock absorbing effect, low in energy consumption and recoverable in energy.

The invention discloses a master-slave cooperation non-contact satellite platform, and a control system and method thereof; the satellite platform comprises a loading cabin, a service cabin, and a magnetic suspension mechanism; the bottom of the loading cabin is provided with a payload; the loading cabin is provided with a star sensor, a gyro and a payload control unit; the service cabin comprises general satellite modules, and is provided with a drive mechanism, a thruster, a momentum wheel, a solar battery array and a relative attitude control unit; the magnetic suspension mechanism comprises a permanent magnet end and a coil end; the permanent magnet end is fixedly connected with the loading cabin; the coil end is fixedly connected with the service cabin; the permanent magnet end and the coil end can use electromagnetism effect to generate electromagnetic force according to command needs; the control system is divided into independent and organically combined 3 closed loops; a sliding mode control method is employed so as to complete high precision high stability attitude control, and robustness is good; the control system and method can be applied to high resolution detection type high performance spacecrafts.

The present invention provides an anti electromagnetic interference multilayer composite materials, which comprises a plastic basement and a metal layer loaded on the plastic basement. The metal layer comprises at least three layers which are a first metal layer, a second metal layer and a third metal layer in turn from inside to outside. The first metal layer and the third metal layer are all formed by one of stainless steel, chrome and nickel. The second metal layer is formed by one of argentums, cuprum and aluminum. The multilayer composite materials provided by the present invention has a small resistivity with a resistance less than two ohm in the largest distance in an area, strong electromagnetism shielding capacity (the electromagnetism shielding capacity reaches up to 10 to 50 Debye), strong corrosion resistance and good combining power to the plastic basement. Even under the effect of brine corrosion, the metal layer in particular to the second metal layer is still firmly attached to the plastic basement. In addition, the metals forming the metal layer of the present invention are all routine and not expensive metals, so the cost of production is relatively low.