73results about "Educational models" patented technology

An intelligent tissue mimicking ultrasonic phantom, which is a temperature-sensitive polymer gel having the following acoustic properties and other physical characteristics: acoustic velocity: 1500-1550 m/s; acoustic impedance: (1.50−1.60)×10⁶ Pa·s/m; density: 1.01-1.06 g/cm³; and a denaturation temperature, namely, a Lower Critical Solution Temperature (LCST) or a Volume Phase Transition Temperature at which the volume of the phantom changes, adjustable by changing the ratio of raw materials, around which there is a reversible phase transformation between the opaque phase and the transparent phase. Said gel can be a polymer of isopropylacrylamide (NIPA). Said ultrasonic phantom has a transparent appearance, and an adjustable thermal denaturation temperature; the thermal denaturation region of the ultrasonic phantom is distinct and has a well-defined boundary; the material of the phantom is stable and deterioration-resistant, and can ensure the consistency of the quality; the phantom is thermal denaturable with the appearance thereof turning white, while the phantom recovers when the heat is removed, such that it can be used repeatedly.

The invention relates to the technical field of mechanical automation, in particular to an online teaching processing system for a glue dispensing machine, which is characterized in that the main body of a glue dispensing robot is internally provided with a command interpreter and a main-body communication interface, and at least one of a microcomputer and a teaching programmer is connected with the main body of the glue dispensing robot in an interface communication manner to form an online programming mode or a programming mode or an online mode; and the main body of the glue dispensing robot receives a teaching command or an automatic operation command sent by the microcomputer or the teaching programmer through the main-body communication interface, the teaching command or the automatic operation command is interpreted by the command interpreter and then sent into a storage unit of a motion controller, and the storage unit of the motion controller sends the command to a robot arm for operation execution so as to enable the main body of the glue dispensing robot to complete a teaching task or a processing task. Compared with the prior art, in the online teaching processing system provided by the invention, the robot arm coordinates of the main body of the glue dispensing robot can be synchronously updated when a CAD/CAM (Computer-Aided Design/Computer-Aided Manufacturing) model is modified, thus improving the programming efficiency and precision.

The invention discloses a similar material simulation experiment device and a using method thereof. On the basis of existing technologies, a baffle rack is added, a pull-type retractable baffle is used, a right frame of an experiment machine is changed to a detachable structure, length sizes of models to perform simulation experiments of the similar material simulation experiment device can be adjusted at will, using functions of the similar material simulation experiment device are widened, the similar material simulation experiment device is multipurpose, and acquisition expenses and device installing space of the similar material simulation experiment device of a laboratory can be greatly reduced. Meanwhile, a sliding device is added in order to reduce operating difficulty of the experiment device, the adjustment of the right frame of the experiment device is simplified, and labor intensity of experiment operators can be greatly reduced. Compared with similar material simulation experiment devices and using methods thereof in the prior art, the similar material simulation experiment device and the using method thereof have the advantages that the structure is simple, the experiment operation is simple and convenient, the length size of the models can be adjusted at will, and time and effort are saved.

The invention relates to the technical field of mine support, and provides an operating condition simulation method and operating condition simulation test bench for an anchor bolt support system. Theoperating condition simulation method for the anchor bolt support system comprises: simulating the surrounding rock of a roadway by a model in order that the shape of the free surface of the model isconsistent with the shape of the surface of the surrounding rock before deformation, wherein the surrounding rock of the roadway is the surrounding rock where one of a roof, a floor and a laneway islocated; mounting an anchor bolt and a bolt surface protecting member on the free surface of the model in comparison with a downhole roadway, and mounting a measuring device corresponding to the boltsurface protecting member; measuring the surface deformation of the surrounding rock of the downhole roadway; applying pressure to the surfaces, other than the free surface, of the model in order thatthe deformation amount of the free surface coincides with the surface deformation amount of the surrounding rock of the roadway; and acquiring the stress and/or deformation of the bolt surface protecting member by the measuring device. The operating condition simulation method for the anchor bolt support system can provide a theoretical basis for the research of an anchor bolt support theory andthe anchor bolt support design under complex stress conditions.

The invention discloses a voltage disturbance generation device which comprises a three-phase rectifier module. The three-phase rectifier module is connected with a three-phase chopper voltage regulation module A, a three-phase chopper voltage regulation module B and a three-phase chopper voltage regulation module C through a DC LC filter. The three-phase chopper voltage regulation module A is connected with a full-bridge inversion module A through a three-phase DC LC filter A; the three-phase chopper voltage regulation module B is connected with a full-bridge inversion module B through a three-phase DC LC filter B; and the three-phase chopper voltage regulation module C is connected with a full-bridge inversion module C through a three-phase DC LC filter C. The full-bridge inversion module A, the full-bridge inversion module B and the full-bridge inversion module C respectively have two paths of output, wherein one paths of outputs are connected with the input end of a three-phase AC LC filter, and the other paths of outputs are mutually short circuited and are connected with the three-phase AC LC filter simultaneously. The problems that continuously-changing output voltage amplitude cannot be realized in a conventional voltage disturbance generation device, and the control difficulty is high are solved; and the voltage disturbance generation device is simple in structure and easily-controlled.

A controller that makes an electric motor efficiently operate in accordance with an ambient temperature. The controller includes a machine learning apparatus learning an operating command to the electric motor. The machine learning apparatus includes a status observing part and learning part. The status observing part observes an ambient temperature of an electric motor apparatus and a cycle time of the electric motor as status variables. The learning part learns an operating command to the electric motor in accordance with a training data set prepared based on a combination of the judgment data acquired by a judgment data acquiring part and the status variables.

By providing a unique, pre-printed housing within which a plurality of windows are formed and positioned for cooperating with a plurality of longitudinally movable arm members or sliders, a unique, hands-on, printed, visually exciting and interest generating advertising/promotional product is attained. In the preferred embodiment, each window incorporates a transparent panel for overlying the visual image contained in the window, as well as preventing the user from obtaining access to the visual information contained therein. By constructing each of the plurality of longitudinally movable arm members/sliders in an overlying manner, a unique construction is realized which enables the movement of one arm member/slider to effectuate a change in the visual display of a window element which is not directly adjacent the arm member or slider. In this way, a unique, surprising and interest generating result is attained.

The invention relates to the technical field of electricity and discloses an intelligent splicing electronic brick. The intelligent splicing electronic brick comprises a bottom board, an electric element module, an intelligent controller and a remote control. Stand columns on the bottom board are sleeved with U-shaped metal caps, so that the electric element module and the intelligent controller form a circuit. The method for the intelligent controller to achieve intelligent control includes the following steps that a, a main program operates and is initialized; b, a certain subprogram is the default or is manually transferred, the subprogram is initialized, a port in the intelligent controller serves as an input/output port, and the corresponding subprogram operates; c, in the operating process of the subprogram, a remote control signal/key signal is scanned, the subprogram is switched over/switched off when the signal is scanned out, and the subprogram continues to operate when no signal is scanned out. The intelligent controller and the remote control are additionally arranged, the intelligent controller controls different subprograms through the main program to operate, and therefore various control functions can be achieved through one intelligent controller, intelligence can be improved remarkably, and the electronic brick is further simplified.

The present invention is a periodic table based game system. The game board has a periodic table of elements printed upon it. Each of the elements is covered by a magnetic piece with a matching atomic number, such that the players may only view the atomic number of the elements. The game begins when the first player chooses a stick or card with an element name and symbol on it. The player then must lift a magnetic piece to reveal the same element that is listed on the stick or card. If they are successful, they are rewarded points and the next player takes a turn. If they fail three times, the next player will also have three attempts to uncover the correct element and receive points. When all magnetic pieces are removed, the player with the highest sum of points wins the game.

The invention discloses a rock and mineral and paleontological specimen display device special for a geological laboratory, the display device comprises a protection device, a display seat used for placing specimens is fastened on the protection device, a clamping piece used for fixing the specimens is fastened on the display seat, fixing pieces distributed in an array are fastened on the displayseat, the protection device comprises a bottom plate, symmetrically-distributed first sliding grooves are formed in the bottom plate, symmetrically-distributed protective covers are arranged in the first sliding grooves in a sliding mode, symmetrically-distributed mounting plates are arranged on the bottom plate in a fastened mode, a worm is rotatably arranged between the mounting plates, a firstmotor is fixedly arranged on one side of each mounting plate, and the output end of each first motor penetrates through the corresponding mounting plate and is connected with the corresponding worm ina fastened mode. A first gear is rotationally arranged on the bottom plate, a supporting column is arranged on the first gear in a fastened mode, and a hexagonal sinking groove used for fixing the display base is formed in the supporting column. According to the display device, the limiting plate is rotationally arranged, specimens of different shapes can be conveniently attached, the clamping pieces fasten the specimens, and the worm and the first gear are matched to rotate the display base.

The invention discloses a mould for manufacturing a hydrogen fuel cell module used as a demonstration teaching aid. The mould comprises a lower mould plate (1) and an upper mould plate (2); a plurality of rectangular positioning grooves (11) are formed in the upper end surface of the lower mould plate (1); a plurality of rectangular positioning holes (21) opposite to the positioning grooves (11) in the lower mould plate (1) are formed in the upper mould plate (2); one side edge of the upper mould plate (2) is fixed with one side edge of the lower mould plate (1). An auxiliary mould and a new method for producing the cell module through the auxiliary mould are designed, the production time of the cell module is shortened, and the production efficiency of the cell module is improved.

A patient simulation system for healthcare training is provided. The system includes one or more interchangeable shells comprising a physical anatomical model of at least a portion of a patient's body, the shell adapted to be illuminated from behind to provide one or more dynamic images viewable on the outer surface of the shells; a support system adapted to receive the shells via a mounting system, wherein the system comprises one or more image units adapted to render the one or more dynamic images viewable on the outer surface of the shells; one or more interface devices located about the patient shells to receive input and provide output; and one or more computing units in communication with the image units and interface devices, the computing units adapted to provide an interactive simulation for healthcare training.

The invention discloses a device for oxidizing I<-> type primary battery by Cu<2+> and a manufacturing method of the device. The device comprises a waxed egg shell with a hole at the top, the lateral side of the waxed egg shell is provided with a small hole, wax and egg shell of the small hole are removed, and only a semipermeable membrane in the egg shell is left. The waxed egg shell is disposed in a small beaker, copper sulfate solution is filled in the small beaker, the liquid level of the copper sulfate solution is lower than the top of the waxed egg shell, and potassium iodide solution is filled in the waxed egg shell. Two copper sheets are soaked in the copper sulfate solution in the small beaker and the potassium iodide solution in the waxed egg shell respectively and are parallelly connected with a voltmeter and a microammeter through leads. A common semipermeable membrane of eggs substitutes for conventional potassium chloride-agar jelly salt bridge, which is capable of isolating the two different kinds of electrolyte solution and providing passages for ion movement, so that the purpose of oxidizing the I<-> type primary battery by Cu<2+> is achieved.

An electric traction fault training system based on integral multi-circuit comprises an electric traction experimental board, control buttons connected with a relay control unit for controlling the starting, stopping, overloading and travel switches of the circuits, an experimental universal circuit board and a plurality of experimental circuit templates corresponding to the circuits formed by the relay control unit; wherein, the electric traction experimental circuit board is composed of a transformation rectification short-circuit protection unit, the relay control unit connected with the transformation rectification short-circuit protection unit for forming various circuit structures, and circuit selective switches connected with the relay control unit for selecting the specific circuit. The invention adopts the control buttons to detect faults, improves the reliability and also avoids maloperations during use process. Various electric traction control circuits can be extended through the invention, so as to avoid people from directly contacting with electricity and protect the personal safety. The invention integrates the performances of convenience, easy extendibility, quickness, accuracy and good safety together.

The invention discloses a centripetal force tester, which comprises a support rod, the upper and lower sides of the support rod are provided with card slots, the outer wall of the support rod is sleeved with a fixing device, and the bottom end of the fixing box is installed with An upper assembly plate, a lower assembly plate is installed on the bottom end of the upper assembly plate, a slide bar is installed on the top end of the lower assembly plate, and a force sensor is installed on the bottom end of the lower assembly plate. In this centripetal force tester, when it is necessary to adjust the position of the force sensor, pull the fixed box to the left or push the fixed box to the right, squeeze the stuck ball through the support rod, make the stuck ball squeeze the push rod, and the push rod presses the sliding plate, which can make the push The rod drives the slider to slide and press the spring on the concave slide plate, so that the ball enters the fixed box. When the ball reaches the position of the adjacent groove, the spring springs the sliding plate, so that the push rod drives the ball back into the groove Inside, the fixed box can be firmly fixed on the pole, and the fixed box can be pulled to a suitable position on the pole according to the needs of use.

The invention discloses a teaching apparatus for comparing oblique projectile with motion of free falling body, which comprises a push rod motor fixed at the top part of a base; an output shaft of thepush rod motor is fixed with an installing plate, and the top part of the installing plate is fixed with a guide rod; a front face of the guide rod is provided with a T-shaped chute in height direction, and a T-shaped slide block is glidingly sleeved in the T-shaped chute; the bottom part of the T-shaped slide block is provided with a cutter, and the top part of the T-shaped slide block is connected with a first spring fixed on the inner wall of the top part of the guide rod. Through cooperative use of a pull line, an adjusting screw, a guide plate, a second spring, a connecting sleeve, a guide pillar, a T-shaped push block, an oblique projectile ball, and other structures, the oblique projectile ball can obliquely throw in the dip angle direction of the guide plate, so as to simulate theoblique projectile movement; the oblique projectile angle can be adjusted as required, the teaching apparatus is flexible in use, simple in whole structure, low in manufacturing cost, simple and easyto operate, and can deepen study impression.

The invention discloses an open type robot training platform based on sectional material setting up and belongs to the technical field of education robots. The training platform comprises a machine frame, a driving device mounting base, an upper rotating table, a lower rotating table, a first driving device, a second driving device, a first branch chain, a second branch chain, a tail end executing mechanism and a working platform. The machine frame is formed by straight line aluminum profile rod pieces in a setting-up mode. The first branch chain comprises the upper rotating table, a first driving arm and a first driven arm. The second branch chain comprises a lower rotating table, a second driving arm and a second driven arm. The tail end executing mechanism comprises an executing support rod and an executing tail end mounting plate. The training platform is a typical mechatronics system, advanced technologies such as machinery, electronics, computer software and hardware, control, artificial intelligence and modeling are integrated, the platform meets the related requirements for teaching using, autonomous functions such as track planning, writing and grabbing can be completed, good cost performance, openness and expandability are achieved, and meanwhile function modules can be increased and decreased according to needs conveniently for innovation.

The invention relates to a device for converting an analog distribution network system, and the device comprises a transformer, a first analog three-phase device, a second analog three-phase device, a first analog single-phase device, a second analog single-phase device, a primary system conversion unit, a first protection conversion unit, a second protection conversion unit, a third protection conversion unit and a fourth protection conversion unit. In order to overcome the weaknesses of the prior art, the device for converting the analog distribution network system is provided, so that the conversion of five systems can be realized, the technical skill training of the distribution network system and troubleshooting for employees can be realized, the ability of the employee for solving the in-situ problem can be rapidly improved, the employees can carry out the positive learning through the system setting, but also can reproduce an analog fault which is identical to the in-situ real situation so as to carry out the reverse experience training at any time.

The invention discloses a permanent magnet device used for Zeeman effect experiments. The permanent magnet device used for Zeeman effect experiments comprises a plurality of elongated magnets. The end face of one of the elongated magnets is square. The elongated magnet with the square end face serves as a middle magnet. A plurality of elongated magnets are perpendicularly fixed on four rectangular end faces around the middle magnet. The contact polarities of the elongated magnets and the four rectangular end faces around the middle magnet are the same. The permanent magnet device used for Zeeman effect experiments has the advantages of good uniformity, compactness, handiness, simple operation and little effect on electronic system and equipment around. The stability, continuation and adjustability of the magnetic induction intensity and the like can be achieved. The permanent magnet device used for Zeeman effect experiments is applicable to modern physical experiments in universities, and also applicable to relative instruments of the Zeeman effect background technology.

The invention relates to an electric professional display device, in particular to an electric professional integrated circuit design display device. The technical problem is to provide an electric professional integrated circuit design display device capable of fixedly displaying integrated circuit design and keeping integrated circuit design clean. The technical scheme of the invention is as follows: an electric professional integrated circuit design display device comprises a placing frame, a leg, a support, an L-shaped rod, a return plate, a first placing plate, a second placing plate, a slot plate, a connecting plate, a card block, a sliding plate, a sliding sleeve and the like; The lower part of the left and right sides of the placing frame is connected with legs, the bottom of the legs is connected with supports, and the left and right sides of the front side of the placing frame are connected with L-shaped bars. The first placement groove of the invention can be moved downwardand matched with the second placement groove to fix the integrated circuit design, so that the teacher can conveniently teach the students, and the teacher does not need to hold the integrated circuitdesign high to display the students.

The invention discloses a multifunctional quadrilateral transformation device. The multifunctional quadrilateral transformation device includes a first wooden bar, a second wooden bar, a first rubber rib, a second rubber rib, a third rubber rib, a fourth rubber rib, bolts and nuts. The multifunctional quadrilateral transformation device is characterized in that one bolt passes through a first hole O and a second hole O; the first rubber rib, the second rubber rib, the third rubber rib and the fourth rubber rib pass through holes of the first wooden bar and the second wooden bar; and the first wooden bar and the second wooden bar can be hinged with each other since the first hole O and the second hole O of the first wooden bar and the second wood wooden bar are provided with the bolt and one nut; and the first wooden bar is rotatingly hinged with the second wooden bar. Different hole pitch being realized, different quadrangles can be obtained; the two wooden bars are just like Transformers; and thus, the multifunctional quadrilateral transformation device can be used in teaching and experiment demonstration. With the multifunctional quadrilateral transformation device adopted, profound principles can be embodied, and teaching tends to arouse students' interests. The multifunctional quadrilateral transformation device is advantageous in interesting property, inspiration, creativity, operational easiness, simple structure and few materials.

The invention relates to a fixing structure for a plastocene model ABS component. The fixing structure comprises a mold core foam component, a plastocene cover layer component arranged on the mold core foam component and an ABS component fixedly connected with the plastocene cover layer component. The fixing structure further comprises a positioning installation unit, wherein the positioning installation unit comprises positioning parts arranged on the back side of the ABS component and limiting blocks used in cooperation with the positioning parts, limiting holes for the positioning parts to penetrate through are formed in the plastocene cover layer component, the limiting blocks are arranged on the mold core foam component, and the positioning parts penetrate through the limiting holes in the plastocene cover layer component and are connected with the limiting blocks in the mold core foam component, so that the ABS componnet is fixed to the plastocene cover layer component by the positioning parts and the limiting blocks together. Compared with the prior art, the overall structure of the fixing structure is simple, the working efficiency can be effectively improved, the accuracy of installation between an ABS cylinder and plastocene holes is guaranteed, the ABS component can be effectively prevented from falling off, no extra processing cost needs to be added, and the fixing structure is economical and practical.

The invention discloses an experiment table applied to machinery major learning. The experiment table comprises a table body, and a table top is slidably hinged to the upper end of the table body. A machinery transmission learning unit is fixedly arranged on the back face of the table top, and a hydraulic transmission learning unit is arranged inside the table body. The hydraulic transmission learning unit can be lifted and lowered along the table body through a lifting mechanism. The machinery transmission learning unit comprises a first installation plate, a transmission piece and a supporting assembly used for supporting the transmission piece are arranged on the first installation plate. The transmission piece comprises a rotary shaft, a straight gear, a helical gear, a bevel gear, a synchronous pulley, a synchronous belt, a chain wheel, a chain, a worm gear, a worm, a lead screw and a nut. The experiment table is compact in structure, the operation is simple, machinery transmission learning and hydraulic transmission learning are achieved, students can perform personalized assembly according to the demand, and the learning effect is improved.

The present invention relates to an oblique projectile motion and free-fall motion contrast teaching instrument. The instrument comprises a first board, a wire, an electromagnet, a battery pack, a switch, a small ball, a stainless steel pipe, a bare conductor and a transparent adhesive tape. The first board is horizontally arranged and is vertically connected with a second board, a third board and a fourth board through nails; the stainless steel pipe is arranged on the second board, the third board and the fourth board; the small ball is arranged at the entrance in the stainless steel pipe; the electromagnet, the battery pack, the switch and the stainless steel pipe are connected through the wire in order; the bare conductor is pasted at two sides of the stainless steel pipe through the transparent adhesive tape; and a coin is absorbed at the bottom portion of the electromagnet, and the tangent line of the stainless steel pipe passes through the center of the coin. According to the oblique projectile motion and free-fall motion contrast teaching instrument, all the devices are stored in a toolset through pulling put nails when the oblique projectile motion and free-fall motion contrast teaching instrument is not used, and the oblique projectile motion and free-fall motion contrast teaching instrument is ingenious in design, low in manufacturing cost and convenient to carry, etc.

The invention discloses a physical wave optics demonstration instrument. The instrument comprises a bottom plate, a stand column is fixed to the left side of the upper surface of the bottom plate, the upper end of the stand column is rotationally connected with the lower end of the outer side face of a transparent shell through a rotating shaft, an electric telescopic rod is fixed to the right side of the upper surface of the bottom plate, the upper end of the electric telescopic rod makes contact with the lower end of the outer side face of the transparent shell, the left end and the right end of the transparent shell are arranged to be open, two sliding grooves in the left and right directions are symmetrically formed in the upper side and the lower side of the inner wall of the transparent shell, a concave-convex lens and a light gathering cover are arranged inside the transparent shell, the concave-convex lens is located on the left side of the light gathering cover, and first sliding blocks are fixed to the upper end and the lower end of the side face of the concave-convex lens respectively. The physical wave optics demonstration instrument is diverse in function and easy to operate; a level meter is cooperated with the electric telescopic rod for use, and horizontal adjustment of a lamp is convenient; smoke generated by a smoke tank enters the transparent shell through a control valve, and a light ray path appears, so that focusing or diffusion of the light ray is achieved by adjusting the position of the lamp conveniently.

The present invention provides a device for comparing size of an optical glass refractive index. The device comprises a fixed pedestal which is connected with a clamping module, a scale plate is fixed at the lower portion of one side of the fixed pedestal, the scale plate is close to the fixed pedestal, the other end of the clamping module is connected with a clamping rack, and a laser pen is clamped in the clamping rack. The device employs linear propagation principle of the laser to visually compare the size of the optical glass refractive index, the principle is intelligible, the understanding is easy, and the device is suitable for teaching demonstration or simple optical glass distinguishing. The device is simple in structure, intelligible in principle and brief in usage process.