45 results about "Physical laboratory" patented technology

The invention discloses an integer-order and fractional-order multifunctional chaotic experiment instrument, which can be used for realizing experiment of a three-dimensional or four-dimensional integer-order or fractional-order chaotic system and can output a time-sequence diagram or a phase diagram by a dual-trace oscilloscope. The integer-order and fractional-order multifunctional chaotic experiment instrument comprises a shell and an internal circuit board, wherein the internal circuit board is arranged in the shell; the internal circuit board is provided with a power circuit, an I-part circuit and an II-part circuit; the I-part circuit and the II-part circuit are used for generating chaotic signals and are the same in circuit structure; each part consists of four channels; each channel comprises a signal input circuit, an adder circuit, an integral circuit and a chaotic signal output circuit; each adder circuit is respectively connected with the corresponding signal input circuit and the corresponding integral circuit; and the output end of each integral circuit is connected with the corresponding chaotic signal output circuit. The integer-order and fractional-order multifunctional chaotic experiment instrument disclosed by the invention is simple and reasonable in structure, good in stability, high in reliability and strong in practicability, can be used for teaching in a physical laboratory of the college, can also be used as common scientific and research equipment of the research institutions, and completely meets the research need of the current chaotic phenomenon.

Embodiments of the present invention provide an inexpensive and fast pulse characterization platform capable of real time operation, suitable for acquisition of single-photon data. Embodiments of the present invention include both a digital multi-channel data acquisition instrument and an analog pulse acquisition instrument suitable for a wide range of applications in physics laboratories. An FPGA performs multi-channel acquisition in real time, time stamps single events, and determines if the events fit a predetermined signature, which causes the events to be categorized as a coincidence. The indications of coincidences are then communicated to a host computer for further processing as desired.

The invention discloses an intelligent management method and system for electronic components, and the method comprises the steps: classifying the components according to the types and parameters of the components, and querying the electronic components based on a WeChat applet. A query module comprises a component identification query based on a neural network SSD (Solid State Disk) architectureand a component name fuzzy query based on a WeChat applet. According to the invention, the problems of scattered storage, unreasonable classification, inconvenient search and the like of electronic components in an open physical laboratory can be solved, and the working efficiency of a laboratory administrator is improved.

The invention discloses a cloud physics laboratory learning platform. The cloud physics laboratory learning platform includes an intelligent terminal device end and a cloud server end; a cloud physics laboratory learning module is installed in the intelligent terminal device end; a plurality of experimental modules are arranged in the cloud physics laboratory learning module; each experimental module is independently set as a resource package which is stored on the cloud server end through using a wired or wireless communication mode in the intelligent terminal device end; and the cloud server end performs big data processing and storage on experimental data uploaded by the intelligent terminal device end so as to obtain a performance analysis report and feeds back the performance analysis report to the intelligent terminal device end. According to the cloud physics laboratory learning platform of the invention, an intelligent terminal such as a mobile phone and a computer is adopted as a carrier, and the cloud server is used in combination, and therefore, palmtop type physics experiment teaching, performance statistics intellectualization, popularization maximization and education effectiveness cost performance optimization can be realized, temporal and spatial constraints in traditional experiment teaching can be broken, and a new physics teaching mode can be created.

The invention discloses an aluminum alloy section for physical laboratory cabinet and a preparation method thereof. An alloy comprises, by weight, 4.2 to 5.4% of Zn, 1.8 to 2.6% of Mg, 0.15 to 0.35% of Cu, 0.3 to 0.7% of Mn, 0.05 to 0.25% of Cr, no more than 0.15% of Ti, 0.3 to 0.6% of Si, no more than 0.25% of Fe, 0.1 to 0.2% of Zr, 0.08 to 0.14% of Cd, 0.04 to 0.06% of In, 0.3 to 0.05% of Sc, 0.025 to 0.045% of Er and 0.01 to 0.02% of Tm, with the balance being Al. According to the invention, through optimization of alloy components and reasonable arrangement of heat treatment technology, the prepared aluminum alloy section has excellent comprehensive mechanical properties, tensile strength of no less than 450 MPa and non-proportional extension strength of no less than 400 MPa, can substantially improve safety performance of the aluminum alloy laboratory cabinet, is applicable to preparation of the physical laboratory cabinet without dependence on import materials and has important economic benefits.

The invention provides a carbonate rock reservoir permeability prediction method and system, computer equipment and a computer-readable storage medium, and relates to the technical field of geophysical exploration. The method comprises the following steps: collecting rock data of a carbonate rock physics laboratory; establishing a pore aspect ratio two-dimensional rock physical template accordingto the rock data; establishing a porosity-permeability model of reservoirs of different pore types by using the pore aspect ratio two-dimensional rock physical template in combination with the rock data; collecting measurement data of a carbonate reservoir for well logging or seismic measurement; and predicting the permeability of the carbonate reservoir according to the pore aspect ratio two-dimensional rock physical template and the measurement data. According to the method, the correlation between the porosity and the permeability is effectively improved, and the reservoir permeability is more accurately predicted.

The invention discloses a multifunctional physical laboratory test bench. The multifunctional physical laboratory test bench comprises a base, a telescopic workbench, a cabinet body device which is arranged on the base in a sliding manner and is spaced from the upper telescopic workbench; the cabinet body device comprises a left cabinet body and a right cabinet of which openings are matched, and is internally provided with an experimental device; the experimental device comprises an emitter, an elastic mechanism and an experimental mechanism which are sequentially connected; one limiting device is arranged on each of two sides of the outer part of the cabinet body device; the limiting devices comprise a plurality of cut-in strips on outer walls of the two sides of the cabinet body device,and embedded plates located on two sides of the cabinet body device and arranged at two ends of the guide rails. The multifunctional physical laboratory test bench disclosed by the invention has the advantages of novel design, convenience and efficiency in operation, good storage effect, high protectiveness and capability of being adjusted and moved according to actual needs; the multifunctional physical laboratory test bench is suitable for environmental requirements of different physical experiments, so that the experimental burden is reduced and the service life is prolonged.

The invention discloses a multifunctional teaching aid for a physical laboratory. The multifunctional teaching aid for the physical laboratory comprises a current meter, a universal circuit board, a main computer, a power supply module, a protective circuit and a simulator, wherein the voltage meter and the ohmmeter are mounted at the right side of the current meter; an indicating lamp is mounted at the right side of the ohmmeter; a switch and an emergency stop button are arranged on the left side of the current meter; gear-shifting knobs are arranged below the current meter; an output power interface is fixed to the left side of the universal circuit board; the output end of the power supply module is electrically connected with the input end of a self-checking device; the output end of a filter is electrically connected with the input ends of the universal circuit board and the output power interface respectively; the output end of the output power interface is electrically connected with the input end of peripheral equipment; the output end of the peripheral equipment is electrically connected with the input end of the simulator. The multifunctional teaching aid for the physical laboratory modularizes various circuits in the form of an integrated circuit, so that the multifunctional teaching aid for the physical laboratory meets functional requirements of a variety of physical experiments, is complete in function and simplifies the experimental complexity.

The invention discloses a teacher demonstration bench in a physical laboratory, the opening of several U-shaped supports orientates to the inner side of the demonstration bench, adjacent two U-shaped supports at will are passed through more than two upper cross beams and are connected to a frame of the experiment table in order, a table surface is fixed on a frame of the demonstration bench, a hollow apparatus cabinet inserts from the front end of the frame of the demonstration bench, a backboard is fixed at the rear end of the frame of the demonstration bench, the frame of the demonstration bench between the hollow apparatus cabinet and the backboard forms an electrical installation channel, and a control table is arranged on the table surface and is connected to the power supply in the electrical installation channel. The teacher demonstration bench can realize the separation of the electrical installation channel and the hollow apparatus cabinet, the exposure of the wire outside the demonstration bench can be avoided, and the external beauty of the demonstration bench can be realized; the backboard is hinged to the upper cross beam simultaneously, so that the convenience for electrical installation, electrical heat radiation and electrical maintenance are realized.

The invention discloses a Galileo cant demonstrator which has the advantages of remarkable phenomenon, simple structure and convenience for self-production. The Galileo cant demonstrator is necessary in study of Newton first law. In multiple years, a number of physics laboratories in middle schools do not have the Galileo cant demonstrator, and it is difficult to buy the Galileo cant demonstrator. The reasons for the problems are that firstly, a gliding trolley or ball cannot be guaranteed to run in the same vertical surface; and secondly, inclined surfaces at two sides are not connected smoothly, thus the trolley or ball loses a large amount of energy at the bottom end, large experimental errors are caused, the phenomenon are not obvious, and the abstract theory is more difficult to understand. The Galileo cant demonstrator adopts a PVC (polyvinyl chloride) wire clamping groove upper cover as the guide rail, and a glass ball instead of the moving trolley, therefore, the experimental phenomenon are extremely obvious, the whole device has the advantages of simple structure, convenience for drawing of materials, convenience for self-production or batch production, and capability of filling the gap of the apparatus in laboratories quickly. In addition, the Galileo cant demonstrator can be used for qualitative research of the theory of conversion of kinetic energy and gravitational potential energy of an object.

The invention discloses a teacher demonstration platform for a physics laboratory. The teacher demonstration platform comprises a platform plate, wherein a groove is formed in the left side of the upper end of the platform plate; an instrument gauge is fixedly connected with the upper end of the platform plate; the left side of the lower end of the platform plate is fixedly connected with an equipment cabinet; a fixed plate is arranged at the inner side of the equipment cabinet; a retractable air cylinder is arranged at the upper end of the fixed plate; a connecting plate is fixedly connectedwith the end part of a retractable shaft of the retractable air cylinder; the upper end of the connecting plate is fixedly connected with an angle motor; a hoisting platform is fixedly connected withthe end part of an output shaft of the angle motor in a manner of penetrating through the platform plate; an instrument cabinet is arranged at the right side of the lower end of the platform plate. According to the teacher demonstration platform for the physics laboratory, disclosed by the invention, students can more directly observe an experiment process in a teaching process of a teacher; the teacher demonstration platform has various functions, the understanding of the students on experiments is deepened and the teaching quality and effect are easy to improve.

The invention relates to an integrated experimental instrument for the composition and decomposition of forces on inclined planes, which is an experimental apparatus in teaching laboratory and physicslaboratory equipment. The integrated experimental instrument solves a problem that the traditional instruments cannot measure accurately because of the adoption of a spring scale for force measurement, and further realizes functions, which are not possessed by the traditional instruments, of directly displaying a force measurement value on equipment and transmitting the value to a computer in a wired or wireless mode so as to display a continuous force measurement curve on a computer screen. The integrated experimental instrument innovatively adopts the technological paths such as an integrated structure design, a force measurement strain gauge, relevant electronic circuits and computer software, realizes continuous measurement for the vertical pressure of two inclined planes when the included angle between the inclined planes and the horizontal plane continuously changes between 0 degree and 90 degrees, and displays a measurement curve on the computer screen, thereby synchronously verifying the composition and decomposition principles of forces on the inclined planes.

The invention relates to the technical field of parameter measurement, and provides a steam parameter measuring device for a physics laboratory. The device comprises an evaporation barrel arranged ina protection box, and a microwave generator is arranged on the inner wall of the protection box; one end, extending into the evaporation barrel, of a gas guide vertical pipe is connected with a conical cover, and the other end outside the evaporation barrel is connected with a gas guide transverse pipe; a cylindrical wheel is arranged in the gas guide transverse pipe; a first thermodetector and asecond thermodetector are respectively inserted into the gas guide vertical pipe and a condensation straight pipe, and are respectively used for detecting the initial temperature of water vapor and the temperature after acting; the cylindrical wheel is in transmission connection with a force measuring mechanism. Therefore, the steam energy is converted into the spring force which can be accuratelymeasured, so that the quantitative measurement of the steam heat is realized. Meanwhile, temperature measurement before and after steam work is also realized. The device is simple in structure, can accurately measure a plurality of physical quantities in steam at one time, and is high in measurement precision.

The invention discloses a teaching demonstration operation table for a college physics laboratory. The operation table comprises a supporting bottom plate, the lower end of the supporting bottom plate is connected with a supporting base, the supporting base is provided with a moving mechanism, the upper end of the supporting bottom plate is connected with an operation mainboard through a height adjusting mechanism, the operation mainboard is provided with an operation panel, the operation mainboard is provided with a first placing groove, a plurality of winding rods are uniformly distributed in the placing groove, the upper end of the operation mainboard is connected with a box door through a first connecting piece, and the box door is provided with a handle. According to the teaching demonstration operation table for the college physics laboratory, height adjustment and convenient movement can be performed conveniently, and great progress is achieved.

The invention discloses a physical laboratory signal test experimental box, which comprises a box body and a cover body. The upper part of the box body comprises two parts, wherein the part close to the inner side has a rectangular groove in which a plurality of signal indicator lights are arranged; and the part close to the outer side has a plurality of control buttons on its surface each of which corresponds to a signal indicator light. A front surface of the box body is provided with signal line interfaces. A test circuit and a power source are disposed inside the box body. The test circuit is connected with the power source and the signal line interfaces, connects a signal line to the corresponding signal line interface, and tests the signal line by turning on the control button. The physical laboratory signal test experimental box is simple in structure and convenient to operate. Just by inserting the two ends of the signal line into the signal input ports of the physical laboratory signal test experimental box, turning on the switch, and observing the indicator light, the on/off state, the connection state, the type and the like of the signal line can be determined, thereby saving time, avoiding a waste to time caused by taking the wrong signal line, and improving the work efficiency of an operator.

The invention relates to a spring force measuring device for a mechanics experiment in high school physics and a force measuring method. At present, the teaching tool for a high school physics laboratory is relatively single, especially for the experiment device for force measurement, force measurement in multiple directions can not be done, that is, the pressure and the tension in each directioncan not be measured, and effects of the mechanics experiment are directly influenced. The device comprises a disc (1); the middle part of the disc is provided with a square groove; the square groove is internally provided with a gear (4); the gear is engaged with a rack in a groove rack (3) with a rack; the upper surface and the lower surface of the groove rack are fixed with an upper spring (9) and a lower spring (7); the upper spring and the lower spring are connected with the inner side surface of a support frame (2) and are fixed; the top of the support frame is connected with an upper sliding rod (12); the upper sliding rod sequentially passes through a given-force adjusting sleeve (11) and a zero reset adjusting sleeve (10); and the zero reset adjusting sleeve is connected with the disc through thread. A spring force measuring device for a mechanics experiment in high school physics is provided.

The present invention relates to a breakage-proof reflection image easily-available optical lever used in university physical laboratory. It is formed from foot stool, magnetic tiptoe, spring piece and lens, the lens is positioned in the centrobaric position of foot stool, and it adopts a drawing-inserting mounting mode, so that it can completely resove the difficult problem of that the optical lever can be easily fallen on the ground from measuring frame, and the lens can be conveniently replaced, and the lens size can be expanded, and the reflection image can be easily and quickly found out in the course of measurement.

The invention discloses a solid dissolution rate testing device for a physics laboratory. Vertical side plates are arranged at the left side and the right side of the base respectively, transverse cylindrical shaft cylinders are arranged at the upper portions of the inner walls of the side plates respectively, and cylindrical rotary shafts are arranged in the shaft cylinders respectively and connected with the centers of the left side end face and the right side end face of a cylindrical testing cylinder respectively; two geared rings uniformly sleeve the outer parts of the left side and the right side of the testing cylinder and are meshed with inner gears respectively, the inner gears are both connected with an outer gear through a gear shaft, the outer gear is meshed with a rack, the lower portion of the rack is arranged in a casing pipe, and an outer calibrated scale is arranged on the side wall of the rack; a row of at least three inclined insertion cylinders are arranged at the portion, at the same height, on the inner wall of the testing cylinder, and inner calibrated scales extending downwards are arranged on the side walls of the insertion cylinders respectively; the lowerportion of the testing cylinder is provided with testing liquid. The solid dissolution rate testing device is convenient to use, the testing result is high in accuracy, and the operational safety ishigh.