53results about How to "Achieve coarse tuning" patented technology

The invention discloses a laser communication capturing and tracking system. A variable-focus liquid crystal lens is combined with a liquid crystal optical phased array and a liquid crystal optical wedge; the receiving powers of a coarse capturing detection module and a fine tracking detection module are detected in real time in a process of capturing and tracking space laser communication; according to change of the optical receiving power, the variable-focus liquid crystal lens dynamically controls the beam-divergence angle of a laser communication system; the beam-divergence angle is self-adaptively controlled in the capturing and tracking process; and the capturing time can be effectively increased while the tracking precision is ensured. Based on the laser communication capturing and tracking system disclosed by the invention, the invention further provides a capturing and tracking method for self-adaptively controlling the beam-divergence angle of the liquid crystal optical phased array; and a laser communication link is established through respective laser communication capturing and tracking systems of two communication sides.

The invention discloses a lens driving device and a camera shooting module. A first driving module is connected with a first bracket and a second bracket, and a gap is formed between the first bracketand the second bracket; a driving line is connected with a third bracket and the second bracket; and an elastic part is arranged between the third bracket and the second bracket. By applying a driving signal to the first driving module and/or the driving line, the first driving module is controlled and/or the driving line is controlled to stretch for driving the first bracket and the second bracket to relatively move along an optical axis and/or controlling a distance between the third bracket and the second bracket. Therefore, accurate and coarse adjustment of displacement between the brackets can be achieved; the adjustment precision of the displacement between the brackets is improved; and the focusing precision of an optical lens group is improved.

The invention relates to a sensor mounting adjustment system and a laser leveling reference device. The sensor mounting adjustment system comprises at least three sensor mounting adjustment devices and a laser leveling reference device for mounting a laser. Each sensor mounting adjustment device is provided with a height adjustment part for adjusting level of a sensor fixing seat and a level alignment mechanism. The level alignment mechanism comprises a target positioning hole arranged on a front mounting plate and a target reticle arranged on a rear mounting plate. The connection line between the target positioning hole and the target reticle is arranged parallelly with the sensor. The laser leveling reference device of the invention is provided with at least three height adjustment parts arranged at intervals around the circumferential direction for adjusting level of the sensor fixing seat. According to the system and the device of the invention, horizontal coplane and concentric mounting of measurement axes of multiple sensors can be quickly realized, efficiency and precision of mounting and positioning of the sensor are improved, and the roundness error measurement precision and the rotation error measurement precision can be further ensured.

The invention discloses a calibration method and system of external parameters of vehicle-mounted cameras. The method comprises the steps of: S1, parking a vehicle at a designated position in a calibration site where a plurality of markers are disposed; S2, controlling each vehicle-mounted camera for image shooting, and then carrying out checking of camera mounting positions and angles on the basis of a principle of inverse perspective transformation; S3, finely adjusting the external parameters of the cameras step by step after checking in a preset adjustment range according to preset step length, and calculating the variance of a measurement result, which is collected and obtained by the cameras after each time of adjustment on the external parameters, and a standard result; and S4, selecting a set of external parameters, which correspond to a minimum value of the variance, as a calibration result. The method improves calibration accuracy of the external parameters of the cameras, can carry out simultaneous calibration of the multiple cameras, is fast and highly efficient, and can be widely applied in an industry of control of the vehicle-mounted cameras.

The invention discloses a rolling mill roll box type stage cooling device applied on a plate and strip rolling mill with high rolled piece heat conducting coefficient. The rolling mill comprises an upper working roll and a bearing seat thereof. The rolling mill is characterized in that: the bearing seat is movably connected with stage water supply boxes through a rotary shaft; the stage water supply boxes are symmetrically arranged on the oblique upper part of the upper working roll in a splayed shape, the upper ends of the stage water supply boxes are provided with quick-change connectors, the middle parts of the stage water supply boxes are provided with nozzles, the lower parts of the stage water supply boxes are provided with collecting boxes, pressing rolls are arranged on the lower parts of the collecting boxes, the working faces of the pressing rolls are freely jointed with the working face of the upper working roll, and the pressing rolls are supported on end plates of the stage water supply boxes; and the nozzles are divided into I, II, III and IV zones along the length direction of the working roll, and each zone is connected with a collecting pipe with a control valve, wherein the number of the nozzles is collocated as specified. Because of the adoption of a two-stage reclamation device, the device has stage cooling function, solves roll cooling and isolation of cooling liquid and a rolled piece, realizes rough adjustment of thermal convexity of the rolls, and obtains a better plate form.

The application provides a drop reliability test device comprising a clamping mechanism and a drop height adjusting mechanism, wherein the clamping mechanism is connected to the drop height adjustingmechanism through a rotating shaft; the clamping mechanism is provided with a pair of splints; the connecting line of the pair of splints is parallel to the rotating shaft; and one end of the rotatingshaft is connected with a rotary driving device. The drop reliability test device provided by the application has the beneficial effects of fixing the industrial robot demonstrator with the splints,adjusting the drop height adjusting mechanism to a target drop height, and adjusting the angle between the clamping mechanism and the drop height adjusting mechanism by driving the rotation of the rotating shaft through the rotary driving device, thereby realizing the industrial robot demonstrator to fall at any angle. The connecting line of the pair of splint is arranged parallel to the rotatingshaft to reduce interference with the direction in which the demonstrator falls, thereby accurately obtaining test data. The device is also suitable for other products to be tested, such as mobile phones, tablets, cameras, MP4, radios, watches, amplifiers, batteries and mobile hard drives.

The invention discloses a fiber grating-based spectrum detecting device. The spectrum detecting device comprises a grating group, a light source to be tested, a fiber circulator, a 1 x N optical switch, a photodetector, and a data acquisition module. An output light signal of the light source to be tested enters terminal 1 of the fiber circulator. Terminal 2 of the fiber circulator is connected toan input end of the optical switch. N output ends of the optical switch are connected to one ends of the N gratings. Signals reflected by the gratings enter terminal 3 of the fiber circulator throughthe optical switch. The terminal 3 of the fiber circulator is connected to an input end of the photodetector. An output end of the photodetector is connected with an input end of the data acquisitionmodule. An control end of the data acquisition module is connected to an switching control end of the optical switch. Switching the optical switch to process the signals collected on each grating anddisplay a signal of a spectrum of the light source to be tested. The fiber grating-based spectrum detecting device can meet different requirements and has the advantages that measurement errors caused by conveyance or vibration are avoided, the resolution of a spectrograph is improved by cooperation of coarse adjustment and fine adjustment.

The invention relates to a drum with a function of quickly opening a side cover. The drum comprises a body, the side cover and a damping structure. The damping structure further comprises a damping seat, a seat with magnetic blocks, a damping disc and an adjusting button, the damping disc is matched with the magnetic blocks. The drum is characterized by further comprising a resistance fine adjustment assembly and a rough adjustment assembly, the seat is supported on the damping seat, the fine adjustment assembly and the adjusting button are mounted on the damping seat, and the damping seat isclamped on the inner wall of the body; a mounting hole is formed in the side cover, the adjusting button can penetrate the mounting hole, an elastic clamp leg which axially extends is mounted on the inner wall of the side cover, a clamp seat is arranged on the damping seat, a bayonet which is clamped with the elastic clamp leg is arranged on the clamp seat, a button which is butted to a first spring is radially mounted on the body and corresponds to the bayonet, the tail of the button corresponds to the elastic clamp leg, and the elastic clamp leg can be driven to be separated from the bayonetalong with internal compression actions on the button. The drum has the advantages that the side cover can be quickly opened by means of operation by people with bare hands, and the drum is simple inintegral structure and convenient to operate.

The invention discloses a vehicle lamp air tightness detection system. The vehicle lamp air tightness detection system comprises an air tightness detection machine and a fixing device; an air inlet gun is communicated with an air inlet of a vehicle lamp, and a pressure detector is communicated with a pressure detection port of the vehicle lamp; a spacer is arranged on a baseboard, the air inlet gun and the pressure detector are arranged on the periphery of the spacer, and a fixture and a plug are also arranged on the periphery of the spacer; the air inlet gun, the pressure detector, the fixture and the plug are each arranged on the corresponding support; a horizontal substrate of the supports is laid on the baseboard, and a vertical substrate of the supports is vertically arranged on the baseboard; one side edge of the horizontal substrate is closely attached to the bottom of the vertical substrate, and a first groove extending in the x axis direction is formed in the horizontal substrate; a second groove extending in the y axis direction is formed in the bottom of the vertical substrate, a second bolt is arranged on the side face, where the side edge is located, of the horizontal substrate, and the second bolt is arranged on the second groove in a penetrating mode; a third groove extending in the z axis direction is formed in the vertical substrate, and a third bolt is arranged in the third groove in a penetrating mode; an inserting hole matched with the first bolt is formed in the baseboard.

The invention discloses a chip type thermistor and a resistance value adjustment method thereof. The chip type thermistor comprises a pair of electrodes arranged on the surface of a chip type thermal sensitive ceramic, and a metal pattern extending from at least one of the electrodes and used for adjusting the resistance value, wherein the electrodes comprise a first electrode and a second electrode, the first electrode comprises a first branch and a second branch both having repeated concave-convex structure characteristics, the second electrode comprises an I-shaped branch having an overlapped I-shaped structure characteristic, the two ends of the horizontal end of the I-shaped branch are respectively inserted into a concave part of the first branch and a concave part of the second branch on the first electrode, the metal pattern is provided with at least one rough adjustment welding end and at least one fine adjustment welding end, and the rough adjustment welding end is arranged in an area of the metal pattern corresponding to a convex part of the first branch and/or the second branch on the first electrode. The chip type thermistor provided by the invention can achieve the functions of rough adjustment and fine adjustment of the resistance value at the same time.

The invention discloses an optical microfluidic composite pipe channel. The optical microfluidic composite pipe channel comprises a transparent flexible micro-pipe. The outer surface of the micro-pipeis provided with a photoresponse coating. The photoresponse coating has the photothermal effect and the photo-induced expansion effect under the effect of light within a specific wavelength range. The micro-pipe is provided with at least one liquid flow-in port and a liquid flow-out port. Each of the liquid flow-in port and the liquid flow-out port is provided with a sealing valve. The provided optical microfluidic composite pipe channel does not pollute transmitted liquid, is cheap in coating, energy-saving and efficient, and capable of combining the microfluidic effects of photomechanical drive and photothermal drive, and flexibly realizing the coarse adjustment and the fine adjustment of a microfluidic position.

A rotary driving wheel simulation load experimental platform provided by the invention comprises a pedestal and a driven device; a support pillar is arranged inside the pedestal, and is rotatably provided with the driven device; two sides of the support pillar are provided with stand columns respectively; a normal loading platform is arranged above the stand columns; the normal loading platform isconnected with the stand columns through screws; equipment under test is hoisted and placed on the normal loading platform; under the driving of the equipment under test, the normal loading platformmoves up and down relative to the pedestal in linkage, so that the equipment under test is loaded towards or unloaded from the driven device in a normal direction of the equipment under test. According to the rotary driving wheel simulation load experimental platform provided by the invention, a transmission is additionally mounted between a driving wheel and a variable inertia wheel, and the transmission ratio is introduced. After the transmission is additionally mounted, the variable inertia wheel can simulate an inertia load of a larger mass with a small diameter and a smaller mass.

The invention discloses an automatic furnace pressure adjustment mechanism for a low-temperature pure oxygen combustion aluminum melting furnace and an adjustment method. The automatic furnace pressure adjustment mechanism comprises a flashboard, a lever, a balance counterweight block, a cylinder, a pressure sensor, an electromagnetic valve and a controller; the end, sleeved on a support shaft outside a flue, of the lever is fixedly connected with the flashboard, and the balance counterweight block is hung at the other end; the pressure sensor is electrically connected to the controller; the controller is electrically connected to the electromagnetic valve; the electromagnetic valve is electrically connected to the cylinder; the cylinder is connected to the end, away from the flashboard, of the lever; a groove is formed in the side wall of the flue; when the pressure in the furnace is greater than 50 Pa, the flashboard and the balance counterweight block are in a rotation balancing state; due to impact from high-pressure gas, the flashboard is rotated around the support shaft to quickly open the flue for an openness, so that the pressure in the furnace is lowered; and due to actions of the cylinder, the flashboard is rotated around the support shaft to finely adjust the openness of the flue to keep the pressure in the furnace stable. The mechanism can be used for quickly and efficiently adjusting the pressure in the furnace, so that the pressure in the aluminum melting furnace is stabilized within 1-20 Pa.

The invention relates to a vacuum saturation device for a soil engineering centrifugal model test, and the device provided by the invention comprises a vacuum pump used for supplying power to the whole device, wherein one end of the vacuum pump is connected to a power control cabinet while the other end of the vacuum pump is connected to a water vapor separating jar which is used as the energy storage of the whole device; the water vapor separating jar is connected to the power control cabinet through an electric contact vacuum pressure gage; the vacuum pump is turned off and turned on in real time according to the higher and lower limit values of pressure preset by the electric contact vacuum pressure gage; a three-way valve is arranged on the top of the water vapor separating jar; a first vapor outlet of the three-way valve is connected to a saturation box for supplying a saturation space through a first pipeline; the saturation box is separated from the whole device; a second vapor outlet of the three-way valve is connected to an oil supply jar of a saturation system through a second pipeline; and the bottom of the oil supply jar is connected to a model box in the saturation box through a third pipeline. The vacuum saturation device is not limited by the volume of a saturation object, the saturation speed is controllable, and the saturation quality is ensured.

The invention relates to the field of object or person transmission, in particular to a transmission channel and a vehicle-mounted security inspection system including the same. The transmission channel includes a closed ring shape conveyor belt, an active roller which penetrates through both ends of the conveyor belt and is used for supporting and driving the conveyor belt to rotate, and a drivenroller, the channel further includes a first guide roller and a second guide roller which are located below the conveyor belt, the driven roller, the first guide roller, and the second guide roller each include a support shaft, both ends of the support shaft are arranged on a mounting frame, and the first guide roller and the second guide roller correspond to the driving roller and the driven roller respectively; the horizontal distance between the two ends of the first guide roller and the driving roller is adjustable, and the horizontal distance between the two ends of the second guide roller and the driven roller is adjustable. The transmission channel and the vehicle-mounted security inspection system including the same have the advantage that tension and deviation correction of the conveyor belt are realized by adjusting the positions of the two ends of the roller.

The invention relates to a laser detector for a wire casting instrument, which comprises a base, a support plate is arranged on the surface of the base, a chute is arranged on the front side of the support plate, a slider is arranged in the chute, and a There is a toothed belt, the left side of the mounting plate is also provided with a pulley, the pulley is meshed with the toothed belt, and the rear side of the support plate is also provided with a first motor, the output shaft of the first motor passes through the support plate and is connected with the pulley. The front side of the board is provided with a detector body, the detector body includes a housing, the surface of the housing is provided with an incident window, and a laser receiving unit is arranged inside the housing, the laser receiving unit is a silicon photocell, and the laser receiving unit is located at the back of the incident window , the rear side of the slider is also provided with a second motor, the body of the second motor is fixedly arranged on the rear side of the slider, and the output shaft of the second motor passes through the slider, the mounting plate and is connected with the housing in turn. The laser detector of the line throwing instrument of the invention is easy to operate and has high measurement accuracy.

The invention discloses a double roller glue application device of a solvent-free compound machine. The double roller glue application device includes a worktable, a base material, fourth connecting rods, a third supporting plate, first rotating rods and glue scraping plates; a glue groove is formed in the upper end surface of the worktable, and two sets of first supporting plates are arranged onthe worktable; a heating tube is arranged at the groove bottom of the glue groove; third connecting rods are arranged at the bottoms of the two sets of first supporting plates; glue application rollers sleeve the third connecting rods; the glue scraping plates are in contact with the glue application rollers; the fourth connecting rods are located above the third connecting rods, edge pressing rollers sleeve the fourth connecting rods; connecting plates are arranged on the two sides of the fourth connecting rods; second supporting plates are arranged at the tops of the two sets of connecting plates; the bottoms of the first rotating rods penetrate through first through holes to extend into the upper parts of the second supporting plates, first limiting rings and second limiting rings sleeve the first rotating rods, and screws are arranged at the bottoms of the first rotating rods; and the screws are matched with thread holes. The glue application work of the base materials with different thicknesses can be satisfied; and meanwhile, the arrangement of guiding rollers can play a tensioning role and prevent the material from loosening during the glue application process.

The invention provides a batten forming machine, and belongs to the technical field of wood machining. The batten forming machine comprises a cutting assembly and a rack assembly; the rack assembly comprises a base and a guide rail assembly fixed to the base, a movement portal capable of doing reciprocating motion in the axial direction of the guide rail assembly is movably connected to the guide rail assembly, and a transverse beam capable of being movably connected with movement portal and capable of doing reciprocating motion in the vertical direction is arranged on the movement portal; the cutting assembly comprises a machine base which is movably connected with the transverse beam and can doing reciprocating motion in the axial direction of the transverse beam, a driving motor is arranged on the machine base, and the machine base is further provided with a horizontally-arranged transverse cutting assembly and a vertically-arranged lengthwise cutting assembly; and the driving motor is in driven connection with the transverse cutting assembly and the lengthwise cutting assembly. By means of the batten forming machine, wood needing to be cut is subject to transverse cutting and lengthwise cutting at the same time, battens are cut at a time, and the working efficiency is obviously improved.

The invention discloses an impact pendulum bob device. The impact pendulum bob device comprises a mounting seat frame, a swing arm rod and a hammer head, wherein the swing arm rod is of a telescopic rod structure; the upper end of the swing arm rod and the mounting seat frame are hinged through a hinged assembly, wherein the hinged axis of the hinged assembly extends front and back; the lower endof the swing arm rod is coaxially connected with an adjusting flower basket bolt; the hammer head comprises a base plate block, a plurality of counterweight plate blocks, an impact rod, a plurality offirst connecting bolts and a spring; the top of the base plate block is fixedly connected with the lower end of the adjusting flower basket bolt; the hammer head is formed by fixing a certain numberof counterweight plate blocks on the base plate block through first connecting bolts and connecting nuts, flexible adjustment of the hammer head quality is achieved through mounting different numbersof counterweight plate blocks, and free adjustment of the impact momentum is achieved; and an impact seat abuts against the right-most counterweight plate block through the spring, so that the elasticcache design is realized, and the impact rigidity of the hammer head can be adjusted by replacing the springs of different rigidity. The device can be applied to a reinforced concrete structure test.

The invention provides a multistage focusing device and method and belongs to the technical field of laser direct imaging. The multistage focusing device is applied to a laser imaging system. The multistage focusing device comprises a wedge-shaped prism module, an echelon prism, a first power mechanism and a second power mechanism for driving the wedge-shaped prism module. The wedge-shaped prism module comprises a first prism module and a second prism module. The first power mechanism is used for driving the echelon prism to move so that the focal plane of a laser beam is located at a first preset position. The second power mechanism is used for driving the first prism module and the second prism module to move oppositely so as to adjust the focal plane of the laser beam from the first preset position to a second preset position, wherein the second preset position coincides with the image plane of the laser imaging system. The rough adjustment and fine adjustment of the focal plane position of the laser imaging system are achieved, the focusing range is increased on the basis of guaranteeing focal plane position control accuracy, and the market demand is satisfied effectively.