46results about How to "No magnetic interference" patented technology

The invention relates to a magnetometer correcting method and a magnetic gradiometer correcting method, in particular to a three axis magnetometer correcting method and a three axis magnetic gradiometer correcting method. Under the conditions of no standard three-axis coil, no standard magnetic field and no normalized three-axis magnetometer, the invention corrects the error and carrier magnetic interference generated due to the inconsistent nonorthogonality, interaxial coupling and sensitivity of the three axis magnetometer and the three axis magnetic gradiometer. The invention adopts an ordinary three-axis coil, a scalar quantity magnetometer and a high precision current source to form a correcting device which has the correcting precision at the same order of magnitude as the single axis test precision of a corrected three axis magnetometer. The invention does not need to turn a corrected three axis magnetometer and a corrected three axis magnetic gradiometer during correcting, thereby having a simple operation process and high correcting precision and improving the test precision of magnetic field vector by the three axis magnetometer and the three axis magnetic gradiometer.

The invention belongs to the field of weighing apparatus metering, relating to an automatic handing device of a three-dimensional weight in quality measurement. The invention discloses an automatic handing system of weight and application thereof. The system comprises the weight, a power control part, a sliding assembly, a flexible assembly and a mechanical arm, wherein the sliding assembly and the flexible assembly are matched to operate under the driving of the power control component so as to control the mechanical arm to transport the weight. The automatic handing system of a three-dimensional weight in high-accuracy quality measurement provided by the invention can conveniently and automatically transport and load cylindrical weight, has compact structure, small occupation space, high transportation and loading speed and high working efficiency, and can automatically adjust speed and realize no-impact loading, thereby bringing great convenience for operating staff to operate, saving manpower.

The invention discloses a loudspeaker comprising a frame and a magnet, wherein the magnet is integrally arranged on the frame and positioned in the frame, a vibrating diaphragm and a voice coil are connected and arranged on the frame, the vibrating diaphragm comprises an arch top and a folding ring, a first piezoelectric body is attached to the surface layer of the arch top, and the vibrating diaphragm and the first piezoelectric body are driven by a drive circuit to jointly form coaxial concurrent loudspeaking effect. The invention also discloses an electronic device. After being used, the loudspeaker overcomes the defect that the traditional moving-coil type loudspeaker is easy to generate partition vibration at high frequency and realizes broadband playback, and otherwise, because the piezoelectric body has the advantages of small volume, no magnetic field interference and low power consumption, the invention is very suitable for a mobile telephone or other portable electronic devices.

A compression-shear mixed multi-layer magnetorheological elastomer shock absorber comprises a magnetic conductive tube mounted on a base, a piston mounted in the magnetic conductive tube, a magnet exciting coil mounted on the outer wall of a mounting seat arranged on the base as well as magnetorheological elastomers, wherein the magnetorheological elastomers comprise a shear type first magnetorheological elastomer and compression type second magnetorheological elastomers; the first magnetorheological elastomer is mounted between the piston and the magnetic conductive tube; a shock absorbing layer structure is mounted between the mounting seat and the piston and comprises the second magnetorheological elastomers and magnetic conductive plates, and the second magnetorheological elastomers and the magnetic conductive plates are arranged alternately. According to the compression-shear mixed multi-layer magnetorheological elastomer shock absorber, under joint action of the shear type magnetorheological elastomer and the compression type magnetorheological elastomers, the adjusting ranges of the rigidity and damping of the shock absorber are increased, the shock absorbing effect is enhanced, and the shock absorber can attenuate vibration load of different frequency and amplitudes.

The invention discloses a piezoelectric ceramic driver clamping structure, a linear driving device and a periscopic lens. The structure comprises an upper elastic piece and a lower elastic piece; theupper elastic piece comprises an upper elastic piece clamping part and an upper elastic piece placing part which are integrally formed; the upper elastic piece placing part is horizontally arranged, the upper elastic piece placing part is in an I shape, the left end of the upper elastic piece placing part is bent downwards by 90 degrees to form an upper elastic piece vertical part, and the upper elastic piece vertical part is bent rightwards by 90 degrees to be connected with the upper elastic piece clamping part; the upper elastic sheet does not occupy the side space. According to the invention, the periscopic lens is driven by the linear driving device, and the moving stroke is long; the optical axis of the lens is stable, the variation of the optical axis is small, no magnetic interference exists, the pushing force is large, a large-size lens can be pushed to improve the shooting quality, and a long stroke can be provided to support the focusing of a high-optical-magnification lens.

The invention discloses a signal sensor, comprising a user input end, a force conversion unit, a first piezoelectric and a signal outlet unit, wherein the user input end is used for a user to slide thereon; the force conversion unit is used for converting a thrust when a user slides on the user input end into a pressure acting on the first piezoelectric; the first piezoelectric is used for generating stressed deformation in response to the pressure acting thereon, and causing the surface thereof to be charged; and the signal output unit is used for outputting the charge on the surface of the first piezoelectric as a sensing signal. The invention further discloses a signal sensing method and portable electronic equipment. By applying the signal sensor, an electric sensing signal is generated directly, and the signal sensor can be directly used for controlling various specific applications of the equipment with no need of interference from other equipment processors, so the signal sensor is extremely suitable for various portable electronic equipment; furthermore, the signal sensor saves cost, avoids the defect of erroneous output owing to the random motion of the user without interaction purpose, and achieves wider applicable scope.

The invention provides a navigation puncture system and control method, and relates to the field of surgical navigation. The navigation puncture system comprises a workbench, a host, control equipmentand a spatial positioning device, wherein the control equipment and the spatial positioning device are controlled by the host; the control equipment comprises a base, a control module arranged in thebase, a mechanical arm fixed on the base, a puncture guide module arranged at the end, away from the base, of the mechanical arm and a puncture movement module arranged at the end, away from the mechanical arm, of the puncture guide module; the mechanical arm is controlled by the control module; the spatial positioning device comprises a magnetic field generator, a magnetic field receiver, a positioning piece and a positioning probe arranged on the positioning piece; the spatial positioning device is arranged at the side, away from the control equipment, of the workbench; the puncture movement module is provided with a sensor. The navigation puncture system and control method have the advantages that the damage to patients caused by the fact that a puncture path is manually changed in themanual puncture process is reduced, and the accuracy of the puncture process is improved.

The invention discloses a mobile phone lens zooming mechanism of a multilayer cymbal type piezoelectric driving assembly, and relates to the field of mobile phone shooting. A plurality of layers of cymbal type piezoelectric driving units are overlapped to form a driving assembly, and the driving assembly, a lens group, a lens support and a supporting base form a mobile phone lens zooming mechanism. The driving assembly is connected with the lens support and the supporting base, displacement deformation generated when the cymbal type piezoelectric driving unit is excited by external voltage isamplified through multi-layer superposition, the lens support is driven to move in the optical axis direction, and therefore zoom of the lens is achieved. The number of the driving assemblies is larger than two. Compared with an existing zoom system based on an electromagnetic voice coil motor, the zoom system based on the electromagnetic voice coil motor is more compact in structure, electromagnetic interference is not generated, displacement and angle adjustability of a lens optical device are achieved, and more convenience is brought to image shooting.

The invention discloses an electrical connection interface, and the interface comprises an active interface part which comprises a flange connection body and is provided with an accommodation space, aconnection flange located on a first surface, and a connection bottom surface located on a second surface; and also comprises a rotor adapter, an electric connector male end, a rotor, a nut, a floating device, a hollow screw, a shell and a ultrasonic motor arranged in the accommodating space; the ultrasonic motor is arranged on the first surface, the rotor adapter sleeves the first end of the male end of the electric connector and is attached to the ultrasonic motor, and the rotor is fixed on the rotor adapter; the nut sleeves the male end of the electric connector and is clamped in the rotoradapter, and the nut is radially supported and axially limited in the shell through an angular contact ball bearing pair; the floating device is placed in the hollow screw and is fixedly connected with the inner wall of the hollow screw, and the hollow screw sleeves the second end of the electric connector male end through an internal thread of the floating device; and the ultrasonic motor drivesthe rotor adapter and the rotor to rotate and drives the nut to rotate.

The invention discloses an X-Y workbench with two degrees of freedom, and the workbench comprises a fixed structure, a first sliding structure, a second sliding structure, an ultrasonic motor with more than one degree of freedom, an ultrasonic motor control device with more than one degree of freedom, a bottom plate and a pressurizing device; the first sliding structure is arranged on the fixed structure, and the second sliding structure is arranged on the first sliding structure; one end of the ultrasonic motor with more than one degree of freedom is connected with the second sliding structure, and the other end of the ultrasonic motor with more than one degree of freedom is contacted with the bottom plate, and the ultrasonic motor with more than one degree of freedom maintains a certain pressure to the bottom plate through the pressurizing device; a workbench connecting plate is fixedly arranged on the second sliding structure; the ultrasonic motor control device with more than one degree of freedom controls the ultrasonic motor with more than one degree of freedom by signal excitation; and the ultrasonic motor with more than one degree of freedom controls the sliding of the workbench connecting plate in the X-Y direction by vibration. According to the X-Y workbench with two degrees of freedom, the precise positioning and the use of a single ultrasonic motor on the workbench with two degrees of freedom are realized.

The invention discloses a transformer iron core and a manufacture method thereof. The transformer iron core comprises a pair of external iron core sheets and multiple internal iron core sheets arranged between the external iron core sheets. Each internal iron core sheet is provided with at least one iron core groove for increasing magnetic resistance of the internal iron core sheet, the internal iron core sheets are stacked and connected between the external iron core sheets in a surface-to-surface manner, the iron core grooves are formed at preset positions of the internal iron core sheets, and the preset positions are adaptive to the ion core grooves of the internal iron core sheets and are in staggered arrangement for enclosing the iron core grooves of each layer.

The invention discloses a magnetic field stepless adjustable microscopic dynamic change observing method and device for magnetorheological fluid under the actions of an optical microscope and an ultrasonic near field. The method and the device are characterized in that an ultrasonic near-field generation device based on an ultrasonic energy converter is used for stimulating bent vibration of a vibration plate by using longitudinal vibration of the energy converter in order to apply an ultrasonic field to the magnetorheological fluid in a cavity; a magnet yoke is made of an electric pure-iron material, so that a magnetic induction line is limited in a designed magnetic path, magnetic leakage is lowered, and the magnetic sensing strength in the magnetorheological fluid cavity is uniform. A linear ultrasonic motor is adopted for driving a shearing block to apply shearing force to the magnetorheological fluid. The device has the advantages of simple method and structure, small size and good working effect, and can be widely applied to magnetorheological fluid mechanism researches under multi-field coupling.

The invention discloses a multi-lens focusing module, an image pickup device and an electronic device, the multi-lens focusing module comprises at least two lens focusing assemblies and at least one common magnetic body, two adjacent lens focusing assemblies are arranged side by side, each of the common magnets is arranged in one of the two adjacent lens focusing assemblies, or each of the commonmagnets is arranged between the two adjacent lens focusing assemblies, and the two adjacent lens focusing assemblies share the common magnets. In the multi-lens focusing module of the invention, two adjacent multi-lens focusing assemblies share the same common magnetic body, so the no magnetic interference is generated between the two adjacent multi-lens focusing assemblies, the size of the multi-lens focusing module is reduced, and the occupied installation space can be reduced.

The invention discloses a camera module and electronic equipment, and belongs to the technical field of electronic equipment. The camera module comprises: a shell; a lens partially arranged in the shell; a first circuit board arranged in the shell and positioned on one side of the lens; a photosensitive chip arranged on the first circuit board and located on the side, close to the lens, of the first circuit board; a first deformation assembly arranged in the circumferential direction of the first circuit board, and provided with fluid; and / or a second deformation assembly arranged on one side, far away from the photosensitive chip, of the first circuit board, and provided with fluid; When the device is powered on, the first deformation assembly deforms through flowing of the fluid, drives the first circuit board to move in the plane direction of the first circuit board and drives the photosensitive chip to prevent shake, and / or the second deformation assembly deforms through flowing of the fluid, drives the first circuit board to obliquely move and drives the photosensitive chip to prevent shake.

The invention provides a sensor calibration apparatus including a wood testing room, a sensor, a cold air generation source, and a non-metal pipeline, the wood testing room includes vertically arranged support rods, a bottom layer frame, an intermediate layer frame, and a top layer frame, the bottom layer frame, the intermediate layer frame, and the top layer frame are embedded on the support rods, a flat board is arranged on the intermediate layer frame, the top layer framer is provided with a top board, a calibration chamber having an enclosed space is formed between the flat board, the top board, and the support rods, the inner walls of the calibration chamber are provided with insulation layers, the sensor is arranged in the calibration chamber, the non-metal pipeline is connected with the calibration chamber and the cold air generation source, the wood testing room is arranged indoors and has no metal around within the range of 4m. The sensor calibration apparatus has no magnetic interference around within the range of 4 meters and is low in cost (about 8,000 yuan), and thick insulation layers which can keep the calibration chamber at 0 DEG C are arranged indoors.

The invention relates to a magnetometer correcting method and a magnetic gradiometer correcting method, in particular to a three axis magnetometer correcting method and a three axis magnetic gradiometer correcting method. Under the conditions of no standard three-axis coil, no standard magnetic field and no normalized three-axis magnetometer, the invention corrects the error and carrier magnetic interference generated due to the inconsistent nonorthogonality, interaxial coupling and sensitivity of the three axis magnetometer and the three axis magnetic gradiometer. The invention adopts an ordinary three-axis coil, a scalar quantity magnetometer and a high precision current source to form a correcting device which has the correcting precision at the same order of magnitude as the single axis test precision of a corrected three axis magnetometer. The invention does not need to turn a corrected three axis magnetometer and a corrected three axis magnetic gradiometer during correcting, thereby having a simple operation process and high correcting precision and improving the test precision of magnetic field vector by the three axis magnetometer and the three axis magnetic gradiometer.

The invention provides an image capturing device, and the device comprises a lens barrel, a lens assembly, a micro photoelectric module and a circuit board, wherein the lens assembly comprises a plurality of lenses installed in an inner cavity of the lens barrel; the micro-photoelectric module is installed in the inner cavity of the lens barrel and located between the two adjacent lenses, and the micro-photoelectric module comprises a transparent electric actuating film; the lens cone is arranged on the circuit board, the electric actuating film is electrically connected to the circuit board, and the circuit board applies voltage to the electric actuating film so as to enable the electric actuating film to deform. According to the image capturing device, the electric actuating film is adopted to replace a motor of a camera module in the prior art to realize automatic focusing, so the image capturing device cannot generate magnetic interference on the basis of realizing automatic focusing. The invention further provides electronic equipment provided with the image capturing device.

The invention discloses a drawer type low voltage switch cabinet, comprising a switch cabinet body, wherein the switch cabinet body is composed of an electric appliance placement area and a heat dissipation area, the surface of the electric appliance placement area is provided with a plurality of groups of drawer units, a handle is arranged on the surface of each of the plurality of groups of drawer units, an air inlet is provided one side of the heat dissipation area, the air inlet is connected to an induced draft fan through a pipe, the induced draft fan is connected to a cooler through a pipe, a shunt pipe is arranged at one end of the cooler, and an air outlet is provided at one end of the shunt pipe. When the low voltage switch cabinet provided with the heat dissipation area at one end of the switch cabinet body is running, the high temperature generated by the electronic components inside the drawer units can be reduced in time, thereby greatly prolonging the service life of thelow voltage switch cabinet; and electromagnetic shielding layers are provided inside the switch cabinet body and the drawer units, so that the electronic components inside the drawer units do not generate magnetic field interference during operation, and do not interfere with each other.

The invention provides a sensor calibration device which comprises a wood testing house, a sensor, a cold air generating source and a non-metallic pipe. The wood testing house comprises a vertically arranged support rod, a bottom frame, an intermediate frame and a top frame. The bottom frame, the intermediate frame and the top frame are respectively embedded on the support rod. The intermediate frame is provided with a flat plate which is embedded in the intermediate frame. The top frame is provided with a top plate. A calibration room with a closed space is formed among the flat plate, the top plate and the support rod. An insulation layer is arranged on the inner wall of the calibration room. The sensor is located in the calibration room. The calibration room and the cold air generation source are connected through the non-metallic pipe. No metal exists within 4m around the wooden testing house. The length, the width and the height of the calibration room are respectively 2m, 2m and 2.5m. The calibration room is 2m from the indoor ground. The sensor calibration device provided by the invention has low cost which is about 8,000 yuan. The thick insulation layer is arranged indoors, so that the calibration room can be kept at zero degree.

The invention provides a petroleum logging instrument sensor calibration device including a wood testing room, a sensor, a cold air generation source, and a non-metal pipeline, the wood testing room includes vertically arranged support rods, a bottom layer frame, an intermediate layer frame, and a top layer frame, the bottom layer frame, the intermediate layer frame, and the top layer frame are connected to the support rods through non-metal connecting pieces, a flat board is arranged on the intermediate layer frame and is connected to the intermediate layer frame via non-metal connecting pieces, the top layer framer is provided with a top board, a calibration chamber having an enclosed space is formed between the flat board, the top board, and the support rods, the inner walls of the calibration chamber are provided with insulation layers, the non-metal pipeline is connected with the calibration chamber and the cold air generation source, a fan for conveying cold air is arranged in the non-metal pipeline, and there is no metal within the range of 4m surrounding the wood testing room. The sensor calibration device has no magnetic interference around within the range of 4 meters and is low in cost, and insulation layers which can keep the calibration chamber at 0 DEG C are arranged indoors.

The invention discloses a spring type piezoelectric air pump. The spring type piezoelectric air pump comprises a base, wherein a positioning ring is arranged on the top end face of the base, a first piezoelectric vibrator is further arranged between the positioning ring and the base, a plurality of stand columns are arranged on the edge of the top end of the base in a circular array mode, the topends of all the stand columns are jointly provided with a lower cavity body, a clamping groove is formed in the top end of the lower cavity body, a cavity body is formed inside the clamping groove, the cavity body comprises an upper cavity body, the upper cavity body is formed inside the clamping groove through a sealing ring, a metal film matched with the clamping groove is fixedly connected to the bottom end of the sealing ring, a joint is fixedly connected to the bottom end of the metal film, the bottom end of the joint is connected with a resonance rod through a tightening ring, and a spring is arranged between the resonance rod and the positioning ring. According to the spring type piezoelectric air pump, through the arrangement of a mass block, the resonance frequency of the whole device is changed, work under the low-frequency work condition of 400 HZ or below can be achieved, work under the high-frequency work condition of 400 HZ or above can also be achieved, and no magnetic interference is generated or received at all.

The invention relates to a piezoelectric three-axis camera driving device and a driving method. The technical key points are that the piezoelectric three-axis camera driving device comprises a base; a protective shell; a frame unit including a first moving body, a second moving body, and a lens carrier; a piezoelectric driving unit comprising a first piezoelectric ceramic vibrator assembly used for driving the first moving body to move along the X axis relative to the base, a second piezoelectric ceramic vibrator assembly used for driving the second moving body to move along the Y axis relative to the first moving body, and a third piezoelectric ceramic vibrator assembly used for driving the lens carrier to move along the Z axis relative to the second moving body; a position sensing unit comprising an X-direction position sensing assembly, a Y-direction position sensing assembly and a Z-direction position sensing assembly. The driving device solves the problem that an existing camera lens driving device cannot achieve the large-displacement, large-load and high-speed focusing function, achieves the rapid focusing and anti-shake functions of a lens, and has the advantages of being small in size, large in thrust, large in displacement, free of magnetic interference, simple in structure and easy to assemble.

The invention provides a petroleum logging instrument sensor calibration device including a wood testing room, a sensor, a cold air generation source, and a non-metal pipeline, the wood testing room includes vertically arranged support rods, a bottom layer frame, an intermediate layer frame, and a top layer frame, the bottom layer frame, the intermediate layer frame, and the top layer frame are connected to the support rods through non-metal connecting pieces, a flat board is arranged on the intermediate layer frame and is connected to the intermediate layer frame via non-metal connecting pieces, the top layer framer is provided with a top board, a calibration chamber having an enclosed space is formed between the flat board, the top board, and the support rods, the inner walls of the calibration chamber are provided with insulation layers, the non-metal pipeline is connected with the calibration chamber and the cold air generation source, a fan for conveying cold air is arranged in the non-metal pipeline, and there is no metal within the range of 4m surrounding the wood testing room. The sensor calibration device has no magnetic interference around within the range of 4 meters and is low in cost, and insulation layers which can keep the calibration chamber at 0 DEG C are arranged indoors.

The invention discloses a piezoelectric driving type resonance air pump. The piezoelectric driving type resonance air pump comprises a cavity body, a lower cavity body and a base, a positioning ring is fixedly connected to the top end of the base, a piezoelectric vibrator is arranged at the top end of the positioning ring and installed on the positioning ring through a plurality of fastening bolts, a plurality of stand columns are evenly arranged at the top end of the base, the top ends of all the stand columns are jointly provided with the lower cavity body, the lower cavity is installed on the stand columns through studs, the top end of the lower cavity is provided with a clamping groove, the cavity body is installed in the clamping groove; and the bottom end of a resonance rod penetrates through the piezoelectric vibrator and is sleeved with a nut, and the resonance rod is sleeved with a mass mechanism. According to the piezoelectric driving type resonance air pump, the resonance frequency of the piezoelectric driving type resonance air pump is changed by arranging the mass mechanism, low-frequency work below 400 HZ can be achieved, the piezoelectric driving type resonance air pump can further work under the high-frequency work condition above 400 HZ, the whole piezoelectric driving type resonance air pump is simple in overall structure and small in size, magnetic interference is not generated at all, magnetic interference is not received, and compared with a traditional air pump, the piezoelectric driving type resonance air pump is more suitable for working in complex environments.

The invention discloses a signal sensor. The signal sensor comprises a user input terminal, a first piezoelectric and a signal output unit; the user input terminal is used for enabling a user to slide on the user input terminal; the first piezoelectric is used for responding a thrust of the user sliding on the user input terminal to generate stress deformation, and induces the first piezoelectric surface with charges; a prepolarized direction of the first piezoelectric is parallel with the direction of the thrust in the same plane; and the signal output unit is used for outputting the charges on the first piezoelectric surface as the sensing signals. The invention further discloses a signal sensing method and portable electronic equipment. After adopting the invention, electric sensing signals can be generated directly without a signal processing device; various specific applications of a signal sensor control device can be utilized directly without interferes of other equipment processors, thus the invention is great suitable to various kinds of portable electronic equipment, saves cost, can avoid interfere generated by static electricity and has wider application range.

The invention discloses a waste gas pipeline with a dust accumulation prevention mechanism for catalytic combustion equipment, and belongs to the technical field of environmental protection equipment. The waste gas pipeline with the dust accumulation prevention mechanism for the catalytic combustion equipment comprises a waste gas pipeline body installed at the upper end of a base; the upper end of the base is fixedly connected with two supporting frames; a pipeline sheath sleeving the outer side of the waste gas pipeline body is fixedly connected between the two supporting frames; the left end of the pipeline sheath is rotatably connected with a semi-magnetic rotating sleeve; and the upper ends of the supporting frames are provided with power assemblies matched with the semi-magnetic rotating sleeve. According to the waste gas pipeline with the dust accumulation prevention mechanism for the catalytic combustion equipment, the semi-magnetic rotating sleeve can be driven by the power assemblies to move on the pipeline sheath, the semi-magnetic rotating sleeve continuously acts on vibration magnetic boxes, and an elastic inner layer vibrates to shake off sediments on the inner wall of the elastic inner layer, so that the cleaning efficiency of the waste gas pipeline is effectively improved, the service life of the waste gas pipeline is prolonged, the probability that the waste gas pipeline is damaged due to the action of the sediments is reduced, and the safety of the catalytic combustion equipment during the waste gas treatment is improved.

The invention discloses a piezoelectricity-driven high-frequency fatigue testing machine. The piezoelectricity-driven high-frequency fatigue testing machine is characterized in that a piezoelectric oscillator 7 is utilized as a driving force source; the piezoelectric oscillator 7, a preset load adjustment mechanism 6, an elastic loading device 5, a sample 4 needing to be tested, and a clamping unit 3 form a resonant system; and under external alternating voltage, deformation of the piezoelectric oscillator 7 is amplified by system resonance and is translated into a alternating load to act on the sample 4 needing to be tested so that fatigue detection and test are realized. The piezoelectric oscillator 7 can adopt a common double-crystal plate bended oscillator structure or a single-crystal plate bended oscillator structure shown in the figure 2 of the patent specification, and also can adopt a structure combined from a single-crystal plate oscillator and a double-crystal plate oscillator in series or in parallel.

The invention provides a sensor calibration device which comprises a wood testing house, a sensor, a cold air generating source and a non-metallic pipe. The wood testing house comprises a vertically arranged support rod, a bottom frame, an intermediate frame and a top frame. The bottom frame, the intermediate frame and the top frame are respectively embedded on the support rod. The intermediate frame is provided with a flat plate which is embedded in the intermediate frame. The top frame is provided with a top plate. A calibration room with a closed space is formed among the flat plate, the top plate and the support rod. An insulation layer is arranged on the inner wall of the calibration room. The sensor is located in the calibration room. The calibration room and the cold air generation source are connected through the non-metallic pipe. No metal exists within 4m around the wooden testing house. The length, the width and the height of the calibration room are respectively 2m, 2m and 2.5m. The calibration room is 2m from the indoor ground. The sensor calibration device provided by the invention has low cost which is about 8,000 yuan. The thick insulation layer is arranged indoors, so that the calibration room can be kept at zero degree.

The invention discloses an X-Y workbench with two degrees of freedom, and the workbench comprises a fixed structure, a first sliding structure, a second sliding structure, an ultrasonic motor with more than one degree of freedom, an ultrasonic motor control device with more than one degree of freedom, a bottom plate and a pressurizing device; the first sliding structure is arranged on the fixed structure, and the second sliding structure is arranged on the first sliding structure; one end of the ultrasonic motor with more than one degree of freedom is connected with the second sliding structure, and the other end of the ultrasonic motor with more than one degree of freedom is contacted with the bottom plate, and the ultrasonic motor with more than one degree of freedom maintains a certain pressure to the bottom plate through the pressurizing device; a workbench connecting plate is fixedly arranged on the second sliding structure; the ultrasonic motor control device with more than one degree of freedom controls the ultrasonic motor with more than one degree of freedom by signal excitation; and the ultrasonic motor with more than one degree of freedom controls the sliding of the workbench connecting plate in the X-Y direction by vibration. According to the X-Y workbench with two degrees of freedom, the precise positioning and the use of a single ultrasonic motor on the workbench with two degrees of freedom are realized.

The invention provides a space solar cell composite interconnection material and a preparation method thereof. The composite interconnection material sequentially comprises a molybdenum substrate, a molybdenum-silver alloy transition layer and a silver film from inside to outside. The molybdenum-silver alloy transition layer is firstly deposited on the surface of the molybdenum foil through the magnetron sputtering technology, then the silver film is deposited on the surface of the molybdenum foil, infiltration and firm bonding between the molybdenum substrate and the silver film and stable transition of thermal expansion coefficients are achieved under the condition that a third metal element which is not a film substrate is not introduced, the film substrate bonding strength is remarkably enhanced, the preparation cost of the space solar cell interconnection material is reduced, and the problems that the welding interface organization structure and performance of the material are uncontrollable due to introduction of other elements and spacecraft signal transmission interference is caused when the material is used are solved. The preparation method disclosed by the invention is simple in process and can be continuously carried out without damaging the vacuum condition, so that the cost is saved, the efficiency is improved, and the film-substrate bonding strength is enhanced.