CN218497677U - High school physics mechanics multifunctional experiment appearance based on thing networking - Google Patents
High school physics mechanics multifunctional experiment appearance based on thing networking Download PDFInfo
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- CN218497677U CN218497677U CN202022194689.XU CN202022194689U CN218497677U CN 218497677 U CN218497677 U CN 218497677U CN 202022194689 U CN202022194689 U CN 202022194689U CN 218497677 U CN218497677 U CN 218497677U
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Abstract
The utility model relates to a physical experiment appearance technical field, concretely relates to multi-functional experiment appearance of high school physics mechanics based on thing networking, its characterized in that: including the experiment pipe, the aspiration pump, the connecting block, the metal ball, a single-chip microcomputer, a display screen, power module and switch, be equipped with the inner chamber that runs through both ends in the experiment pipe, the mobilizable inner chamber of locating of metal ball, the lower extreme of experiment pipe passes the connecting block and is connected with the connecting block, be equipped with the cavity in the connecting block, be equipped with the through-hole on the experiment pipe and make inner chamber and cavity communicate with each other, the aspiration pump is installed on the connecting block and makes the extraction opening and the cavity of aspiration pump communicate with each other, the experiment pipe is equipped with a plurality of annular proximity switches along its length direction interval, the experiment pipe upper end is equipped with the electro-magnet, the electro-magnet passes through control switch and power module electric connection, experiment pipe lower extreme is equipped with the closing cap. The utility model has the advantages of novel and practical overall structure, easy operation, convenient can effectively reduce the influence of resistance to the experimental result, can demonstrate and explore a plurality of physics mechanics experiments.
Description
Technical Field
The utility model relates to a physical experiment appearance technical field, specificly relate to a multi-functional experiment appearance of high school physics mechanics based on thing networking.
Background
The physical knowledge is not only needed to be learned by high school, but also the ability of learning the physical knowledge and applying the physical knowledge is more important to be improved, the high school physics is mainly used for learning to observe and understand the physical principle, and a plurality of commonly used physical research methods are learned.
In high school physics experiments, the uniform variable speed linear motion of object, the motion of free fall, kinetic energy theorem and mechanical energy conservation law are the experiments that must be done, in current experiments, often adopt dolly, inclined plane, paper tape, iron stand platform, beat the point time-recorder, the C type presss from both sides, the weight, alternating current power supply and scale, carry out experiments such as mechanical energy conservation law, however, current experimental procedure is comparatively loaded down with trivial details, and in the experimentation, there can be more resistance to influence final experimental data, such as air resistance, frictional resistance between paper tape and the time-recorder of beating.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an overall structure is novel, practical, easy operation, convenient, can effectively reduce the influence of resistance to the experimental result, can demonstrate the multi-functional experimental appearance of high school physics mechanics based on thing networking of exploring a plurality of physics mechanics experiments.
In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a multi-functional experiment appearance of high school physics mechanics based on thing networking, including the experiment pipe, the aspiration pump, the connecting block, the metal ball, a single-chip microcomputer, the display screen, power module and switch, be equipped with the inner chamber that runs through both ends in the experiment pipe, the mobilizable inner chamber of locating of metal ball, the lower extreme of experiment pipe passes the connecting block and with connecting block fixed connection, be equipped with the cavity in the connecting block, be equipped with the through-hole on the experiment pipe and make inner chamber and cavity communicate with each other, aspiration pump fixed mounting is on the connecting block and makes the extraction opening and the cavity of aspiration pump communicate with each other, the experiment pipe is equipped with a plurality of annular proximity switches along its length direction interval, the upper end opening part fixed mounting of experiment pipe has the electro-magnet, the electro-magnet passes through control switch and power module electric connection, the lower extreme opening part detachable of experiment pipe is connected with the closing cap, power module still is used for the singlechip, display screen and annular proximity switch supply power, power module, display screen and annular proximity switch all with singlechip electric connection.
Further, still include base and flexible bracing piece, the intracavity that holds of base is all located to power module and singlechip, the display screen, switch and control switch are all installed on a side of base surface, two backup pads that the fixed interval that is equipped with in base upper end one side set up, the connecting block is located between two backup pads and with the rotatable connection of backup pad, flexible bracing piece lower extreme is articulated mutually with base upper end opposite side, flexible bracing piece upper end is articulated mutually with first solid fixed ring, first solid fixed ring is fixed locates the experiment pipe upper end.
Furthermore, the telescopic supporting rod comprises a supporting outer rod, a supporting inner rod and a locking knob, the supporting outer rod is sleeved with the supporting inner rod in a movable mode, the locking knob is connected to the supporting outer rod in a threaded mode, and the end portion of the locking knob can be abutted to the outer surface of the supporting inner rod.
Further, still include the angle calibrated scale, angle calibrated scale fixed mounting is equipped with the sign line in the backup pad, experiment outside of tubes surface.
Further, the fixed solid fixed ring of second that is equipped with of experiment pipe lower extreme, be equipped with spacing subassembly between the solid fixed ring of second and the backup pad, spacing subassembly is used for playing limiting displacement and can making it be in vertical state to the rotation of experiment pipe, and spacing subassembly includes stopper and spacing groove, and on the solid fixed ring of second was located to the stopper, the spacing groove was the arc form, and the spacing groove was located in the backup pad and was run through a side end face of backup pad, and the spacing inslot is located to the separable card of stopper.
Further, the closing cap surface is equipped with the external screw thread, and experiment pipe lower extreme opening internal surface is equipped with the internal thread with external screw thread looks adaptation, and closing cap and experiment pipe threaded connection and junction between the two still are equipped with the sealed pad of silica gel.
Furthermore, the sealing cover is provided with air holes, the air holes are detachably provided with plugs, the sealing cover is also fixedly connected with a cushion pad arranged in the inner cavity, and the cushion pad is in a circular ring shape.
Further, still include thing networking module, thing networking module and singlechip electric connection, power module still is used for supplying power to thing networking module.
Further, the number of the annular proximity switches is two.
Furthermore, the experiment pipe is made of transparent materials, and the power module is a lithium battery.
According to the above description, the multifunctional experiment instrument based on the physical mechanics of high school and high school provided by the utility model has novel and practical overall structure, through the arrangement of the experiment tube and the metal ball, the friction between the metal ball and the experiment tube is rolling friction, the friction resistance is relatively small, and the influence of the friction resistance on the experiment can be effectively reduced; through the arrangement of the air extraction pump, air in the inner cavity of the experiment tube can be extracted as much as possible, so that the inner cavity is in a vacuum state as much as possible, and the influence of air resistance on the experiment is effectively reduced; the electromagnet can effectively reduce the influence of artificial factors on the experiment caused by artificial release of the metal ball; through the arrangement of the annular proximity switches, the display screen and the single chip microcomputer, the annular proximity switches can measure the time of the metal ball passing through, so that the time can be converted into corresponding speed, the time of the metal ball passing through two adjacent annular proximity switches can also be measured, the distance between the two adjacent annular proximity switches can be conveniently measured, and therefore the law of uniform variable-speed linear motion, the law of free-fall motion, the kinetic energy theorem, the law of mechanical energy conservation and the like can be experimentally explored; through the setting of base and support telescopic link, be convenient for support fixedly to the experiment pipe, can directly place this multi-functional experiment appearance on the desktop, need not to hold the experiment pipe and experiment, conveniently do the experiment, can conveniently adjust the inclination of experiment pipe simultaneously.
Drawings
Fig. 1 is the utility model relates to a spatial structure schematic diagram of a multifunctional experiment appearance of high school physics mechanics based on thing networking.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a partially enlarged schematic view of a portion B in fig. 1.
Fig. 4 is the utility model relates to a left side view of the multi-functional experiment appearance of high school physics mechanics based on thing networking.
Fig. 5 is a schematic cross-sectional view taken along the direction C-C in fig. 4.
Fig. 6 is a partially enlarged schematic view of fig. 5 at D.
Fig. 7 is a partially enlarged schematic view at E in fig. 5.
Fig. 8 is a perspective view of the support plate.
Fig. 9 is the utility model relates to a state schematic diagram when the experimental pipe of the multi-functional experiment appearance of high school physics mechanics based on thing networking is in and accomodates.
Fig. 10 is the utility model relates to a state schematic diagram when the experimental pipe of the multi-functional experiment appearance of high school physics mechanics based on thing networking is in vertical.
Fig. 11 is the utility model relates to a control schematic diagram of multi-functional experiment appearance of high school physics mechanics based on thing networking.
In the figure: 1-an experimental tube; 11-lumen; 12-a through hole; 13-a first retaining ring; 14-an identification line; 15-a second retaining ring; 151-a limiting block; 2-an air pump; 3, connecting blocks; 31-a cavity; 4-metal balls; 51-a single chip microcomputer; 52-display screen; 53-a power module; 54-power switch; 55-an annular proximity switch; 56-an electromagnet; 57-control switch; 58-an internet of things module; 6-sealing the cover; 61-a silicone gasket; 62-air holes; 63-plug; 64-a cushion pad; 7-a base; 71-a containment chamber; 72-a support plate; 721-a limiting groove; 8-a telescopic support rod; 81-supporting the outer bar; 82-supporting the inner rod; 83-locking knob; 9-angle scale.
Detailed Description
The present invention will be further described with reference to the following detailed description.
As shown in fig. 1-11, a multi-functional experiment appearance of high school physics mechanics based on thing networking, including experiment pipe 1, aspiration pump 2, connecting block 3, metal ball 4, singlechip 5, display screen 52, power module 53 and switch 54, be equipped with the inner chamber 11 that runs through both ends in the experiment pipe 1, the mobilizable locating of metal ball 4 in the inner chamber 11, the lower extreme of experiment pipe 1 passes connecting block 3 and with connecting block 3 fixed connection, be equipped with cavity 31 in the connecting block 3, be equipped with through-hole 12 and make on the experiment pipe 1 the inner chamber 11 with cavity 31 communicates with each other, aspiration pump 2 fixed mounting in on the connecting block 3 and make the extraction opening of aspiration pump 2 with cavity 31 communicates with each other, experiment pipe 1 is equipped with a plurality of annular proximity switches 55 along its length direction interval, the upper end opening part fixed mounting of experiment pipe 1 has electro-magnet 56, electro-magnet 56 through control switch 57 with power module 53 electric connection, the lower extreme detachable of experiment pipe 1 is connected with closing cap 6, power module 53 still is used for right the singlechip 5, proximity display screen 52 with annular proximity switch opening part, power module 53 carries out the equal electric connection of power module 52 and singlechip 52 with singlechip display screen 52.
Through the arrangement of the experiment tube 1 and the metal ball 4, the friction between the metal ball 4 and the experiment tube 1 is rolling friction, the friction resistance is relatively small, and the influence of the friction resistance on the experiment can be effectively reduced; through the arrangement of the air suction pump 2, air in the inner cavity 11 of the experiment tube 1 can be sucked out as much as possible, so that the inner cavity 11 is in a vacuum state as much as possible, and the influence of air resistance on an experiment is effectively reduced; through the arrangement of the electromagnet 56, the influence of artificial factors on the experiment caused by artificial release of the metal ball 4 can be effectively reduced; through the arrangement of the annular proximity switches 55, the display screen 52 and the single chip microcomputer 5, the annular proximity switches 55 can measure the time of the metal ball 4 passing through, so that the time can be converted into corresponding speed, the time of the metal ball 4 passing through two adjacent annular proximity switches 55 can also be measured, the distance between two adjacent annular proximity switches 55 can be conveniently measured, and therefore the law of uniform variable-speed linear motion, the law of free-fall motion, the kinetic energy theorem, the law of mechanical energy conservation and the like can be experimentally explored.
In addition, power module 53 is the lithium cell, optional Arduino uno development board of singlechip 5, optional LCD1602 LCD screen of display screen 52, optional sucking disc formula electro-magnet of electro-magnet 56, the L series inductance formula annular proximity switch of the optional TEOPTO of annular proximity switch 55, in addition, existing product in the market also can directly be selected for use to aspiration pump 2.
As shown in fig. 1 and 5, the multifunctional experiment instrument further comprises a base 7 and a telescopic supporting rod 8, the power module 53 and the single chip microcomputer 5 are arranged in a containing cavity 71 of the base 7, the display screen 52, the power switch 54 and the control switch 57 are arranged on the surface of one side of the base 7, two supporting plates 72 which are arranged at intervals are fixedly arranged on one side of the upper end of the base 7, the connecting block 3 is arranged between the two supporting plates 72 and rotatably connected with the supporting plates 72, the lower end of the telescopic supporting rod 8 is hinged to the other side of the upper end of the base 7, the upper end of the telescopic supporting rod 8 is hinged to a first fixing ring 13, the first fixing ring 13 is fixedly arranged on the upper end of the experiment tube 1, and by adopting the structure, the experiment tube 1 is conveniently supported and fixed, the multifunctional experiment instrument can be directly placed on a desktop without being held by hand to perform an experiment, the experiment is conveniently performed, and the inclination angle of the experiment tube 1 can be conveniently adjusted.
As shown in fig. 3, the telescopic support rod 8 comprises a support outer rod 81, a support inner rod 82 and a locking knob 83, the support inner rod 82 is movably sleeved in the support outer rod 81, the support outer rod 81 is connected with the locking knob 83 through threads, the end of the locking knob 83 can be abutted to the outer surface of the support inner rod 82, and by adopting the structure, when the inclination angle of the experiment tube 1 needs to be adjusted, the locking knob 83 is firstly loosened, then the telescopic support rod 8 is made to stretch and drive the experiment tube 1 to rotate, when the experiment tube 1 rotates to a proper angle, the locking knob 83 can be screwed, the telescopic support rod 8 is locked, so that the experiment tube 1 can be stably located at a corresponding inclination angle.
As shown in FIG. 2, the multifunctional experiment instrument further comprises an angle dial 9, the angle dial 9 is fixedly arranged on the supporting plate 72, the outer surface of the experiment tube 1 is provided with an identification line 14, and by adopting the structure, the experiment tube 1 can be conveniently and rapidly adjusted to a required inclination angle.
As shown in fig. 2 and 8, the fixed solid fixed ring 15 of second that is equipped with of 1 lower extreme of experiment pipe, the solid fixed ring 15 of second with be equipped with spacing subassembly between the backup pad 72, spacing subassembly is used for right the rotation of experiment pipe 1 plays limiting displacement and can makes it be in vertical state, spacing subassembly includes stopper 151 and spacing groove 721, stopper 151 is fixed to be located on the solid fixed ring 15 of second, spacing groove 721 is the arc form, spacing groove 721 is located on the backup pad 72 and runs through a side end face of backup pad 72, the separable card of stopper 151 is located in the spacing groove 721, through adopting this structure, can ensure the quick accurate rotation of experiment pipe 1 to vertical state.
As shown in fig. 6, 6 surfaces of closing cap are equipped with the external screw thread, 1 lower extreme opening internal surface of experiment pipe be equipped with the internal thread of external screw thread looks adaptation, through adopting this structure, can make things convenient for closing cap 6 with quick assembly disassembly between the experiment pipe 1, closing cap 6 with 1 threaded connection of experiment pipe and junction between the two still are equipped with the sealed pad 61 of silica gel to ensure the sealed effect after the two are connected.
As shown in fig. 6, be equipped with bleeder vent 62 on the closing cap 6, the separable end cap 63 that is equipped with in bleeder vent 62 department, end cap 63 can select to form with the silica gel material preparation, works as be in being close vacuum state and need taking off in the experiment pipe 1 when closing cap 6, at first can with end cap 63 follows bleeder vent 62 department separates for the air is followed bleeder vent 62 gets into in the inner chamber 11 of experiment pipe 1, at this moment, can take off closing cap 6, still fixedly connected with locates on closing cap 6 the blotter 64 in the inner chamber 11, blotter 64 is the ring form, blotter 64 can select to form with the rubber material preparation, through the setting of blotter 64, in the experimentation, can play certain cushioning effect to the whereabouts metal ball 4, avoid causing great impact to closing cap 6.
As shown in fig. 5 and 11, this multi-functional experiment appearance still includes thing networking module 58, thing networking module 58 with singlechip 51 electric connection, power module 53 still is used for right thing networking module 58 supplies power, through thing networking module 58's setting can let like this thing networking is connected to singlechip 51, and this multi-functional experiment appearance can carry out analysis and processing of data through thing networking platform to the data transmission who surveys on the thing networking platform, explores for remote education's experiment and provides convenience, is favorable to the timely sharing of online course experimental data simultaneously, in addition, thing networking module 58 mountable in base 7 holds in the chamber 71, thing networking module 58 can select DFRobot OBLOQ module, OBLOQ is a serial ports based on 8266 design changes the WIFI module for receive and send thing networking information.
Preferably, the number of the annular proximity switches 55 is two, and in a specific experiment, the installation position of the annular proximity switches 55 can be conveniently adjusted, so as to change the distance between the two annular proximity switches 55, and of course, in other embodiments, the number of the annular proximity switches 55 can also be three or four for measuring several groups of data.
A use method of multi-functional experiment appearance of high school physics mechanics based on thing networking as follows:
when the experiment explores the law and the kinetic energy theorem of the uniform variable-speed linear motion:
the initial state of the multifunctional experimental instrument is the state during storage, as shown in fig. 9, at this time, the upper end of the experimental tube 1 is lower than the lower end of the experimental tube 1, the metal ball 4 will roll to the lower position and be at the upper end of the experimental tube 1 because of gravity, and then, the metal ball pressesTurning on a power switch 54, powering on the multifunctional experimental apparatus, pressing a control switch 57 to electrify an electromagnet 56 and suck the metal ball 4, loosening a locking knob 83, extending a telescopic supporting rod 8 to adjust the experimental tube 1 to a proper inclination angle theta, as shown in fig. 5, screwing the locking knob 83, fixing the telescopic supporting rod 8 to stabilize the experimental tube 1, (otherwise, when a plurality of experiments are required, adjusting the angle of the experimental tube 1 to a storage state, so that the metal ball 4 rolls back to the upper end of the experimental tube 1 due to self weight, is sucked by the electromagnet 56, and then adjusting the experimental tube 1 to a corresponding inclination angle again), pumping air in the inner cavity 11 of the experimental tube 1 by an air pump 2, keeping the inner cavity 11 of the experimental tube 1 in a vacuum state as much as possible, reducing the influence of air resistance on the metal ball 4 as much as possible, and in experiments, pressing the control switch 57 again to deenergize the metal ball 56, so that the metal ball 4 can be sequentially close to the inner cavity 55 of the experimental tube 1 and sequentially roll down along the annular switch 55, and the inner wall of the two annular switches 55, and sequentially pass through the annular switch 55, and the inner wall of the annular metal tube 1, and the annular switch 55, and the annular switch 55, and the annular switch 1 And t 2 And the time t taken for the metal ball 4 to pass through the two annular proximity switches 55, and since the thickness d of the annular proximity switches 55 can be measured with a vernier caliper, the speed of the metal ball 4 passing through each annular proximity switch 55 can be calculated, and the average speed of the metal ball 4 passing through the first annular proximity switch 55 is equal to the instantaneous speed at the middle time, i.e., the instantaneous speed at the middle time
The average speed of the metal ball 4 passing through the second annular proximity switch 55 is equal to the instantaneous speed at the middle instant, i.e. the instant speed
Of course, this thickness d can be measured in advance and recorded in the single-chip microcomputer 5, and is automatically converted by the single-chip microcomputer 5 and displayed on the display screen 52In addition, the center distance S between two annular proximity switches 55 can be measured by a ruler, and the mass m of the metal ball 4 can also be measured by a corresponding instrument:
1. verifying the rule of uniform variable speed linear motion:
according to the formula:
due to t, v 1 、v 2 All of which are known values, from which the value of the acceleration a can be calculated, then the mounting position of the second annular proximity switch 55 is changed, so as to change the distance between the two annular proximity switches 55, and then the experiment is repeated in such a way as to measure several sets t, v more 1 、v 2 The values of (a) can be calculated, and if the values of the acceleration a are the same in the experimental error range, the rule of the uniform speed changing linear motion is verified.
2. Verifying the theorem of kinetic energy:
the work of the external force on the movement of the metal ball 4 between the two annular proximity switches 55 is W Outer cover In the case of mgsin θ S, since m, g, θ, and S are known values, work by the resultant external force can be calculated (note that since the experiment is performed using the metal ball 4, the rolling friction of the metal ball 4 in the experiment tube 1 is very small, and the friction resistance is negligible), and the increase of the kinetic energy of the metal ball 4 during the movement between the two annular proximity switches 55 is as follows
Due to m, v 1 、v 2 All are known values, so that the increase of kinetic energy can be calculated, if W is within the experimental error range Outer cover ＝ΔE k The kinetic energy theorem is verified.
When the experiment explores the law of conservation of mechanical energy and the law of free fall motion:
the test tube 1 needs to be adjusted to a vertical state, as shown in fig. 10, the metal ball 4 is only subjected to gravity when falling in the test tube 1, and is stationary when it starts to fall, i.e. the initial velocityTo 0, the remaining operating steps are the same as in the above experiment, and the velocity v of the metal ball 4 passing through the first annular proximity switch 55 can be obtained 1 Velocity v of said metal ball 4 passing through a second one of said annular proximity switches 55 2 And the center-to-center distance S between two of the annular proximity switches 55;
1. verifying the law of conservation of mechanical energy:
the reduction of the gravitational potential energy of the metal ball 4 moving between the two annular proximity switches 55 is: delta E p = mgh where m = S is a known value, and the decrease in gravitational potential energy can be calculated, and the increase in kinetic energy when the metal ball 4 moves between the two annular proximity switches 55 is as follows:
due to m, v 1 、v 2 All are known values, so that the increase of kinetic energy can be calculated, if within the experimental error range, delta E p ＝ΔE k The law of conservation of mechanical energy is verified.
2. Verifying the rule of the free fall motion:
according to the velocity displacement formula:
due to v 1 、v 2 S is a known value, and the value of acceleration a is calculated, the value of gravitational acceleration g is known, and if a = g is within the experimental error range, the free fall motion can be verified, and the distance between two annular proximity switches 55 can be changed by changing the installation position of the second annular proximity switch 55, and then the experiment is repeated in such a way that a plurality of groups S, v are measured 1 、v 2 To calculate multiple sets of acceleration a values, to further verify the accuracy of the experiment.
Furthermore, it is also possible to use the formula:
due to t, v 1 、v 2 Are all known values, from which the acceleration is calculatedThe value of a.
The aforesaid does only the utility model discloses a plurality of embodiment, nevertheless the utility model discloses a design concept is not limited to this, and all utilize this to think about right the utility model discloses carry out immaterial change, all shall belong to the infringement the action of the scope of protection of the utility model.
Claims (10)
1. The utility model provides a multi-functional experiment appearance of high school physics mechanics based on thing networking which characterized in that: including experiment pipe, aspiration pump, connecting block, metal ball, singlechip, display screen, power module and switch, power module with switch electric connection, be equipped with the inner chamber that runs through both ends in the experiment pipe, the mobilizable locating of metal ball in the inner chamber, the lower extreme of experiment pipe pass the connecting block and with connecting block fixed connection, be equipped with the cavity in the connecting block, be equipped with the through-hole on the experiment pipe and make the inner chamber with the cavity communicates with each other, aspiration pump fixed mounting in on the connecting block and make the extraction opening of aspiration pump with the cavity communicates with each other, the experiment pipe is equipped with a plurality of annular proximity switches along its length direction interval, the upper end opening part fixed mounting of experiment pipe has the electro-magnet, the electro-magnet pass through control switch with power module electric connection, the lower extreme opening part detachable of experiment pipe is connected with the closing cap, power module still be used for right the singlechip the display screen with annular proximity switch supplies power, power module, the display screen with annular proximity switch all with electric connection.
2. The multifunctional experimental instrument for high school physics and mechanics based on internet of things as claimed in claim 1, wherein: still include base and flexible bracing piece, power module with the singlechip is all located the intracavity that holds of base, the display screen switch with control switch all install in a side of base is on the surface, the fixed two backup pads that are equipped with the interval and set up in base upper end one side, the connecting block is located two between the backup pad and with the rotatable connection of backup pad, flexible bracing piece lower extreme with base upper end opposite side is articulated mutually, flexible bracing piece upper end is articulated mutually with first solid fixed ring, first solid fixed ring is fixed to be located the laboratory glassware upper end.
3. The multifunctional experimental instrument for high school physics and mechanics based on internet of things as claimed in claim 2, wherein: the telescopic supporting rod comprises a supporting outer rod, a supporting inner rod and a locking knob, the supporting inner rod is movably sleeved in the supporting outer rod, the locking knob is connected to the supporting outer rod in a threaded mode, and the end portion of the locking knob can be abutted to the outer surface of the supporting inner rod.
4. The multifunctional experimental instrument for high school physics and mechanics based on internet of things as claimed in claim 2, wherein: still include the angle calibrated scale, the angle calibrated scale fixed mounting in the backup pad, experiment outside of tubes surface is equipped with the sign line.
5. The multifunctional experimental instrument for high school physics and mechanics based on internet of things as claimed in claim 2, wherein: the fixed solid fixed ring of second that is equipped with of experiment pipe lower extreme, the solid fixed ring of second with be equipped with spacing subassembly between the backup pad, spacing subassembly is used for right the rotation of experiment pipe plays limiting displacement and can make it be in vertical state, spacing subassembly includes stopper and spacing groove, the stopper is fixed to be located the solid fixed ring of second is last, the spacing groove is the arc form, the spacing groove is located in and run through in the backup pad a side end face of backup pad, the separable card of stopper is located the spacing inslot.
6. The multifunctional experimental instrument for high school physics and mechanics based on internet of things as claimed in claim 1, wherein: the closing cap surface is equipped with the external screw thread, experiment pipe lower extreme opening internal surface be equipped with the internal thread of external screw thread looks adaptation, the closing cap with experiment pipe threaded connection and junction still are equipped with the sealed pad of silica gel between the two.
7. The multifunctional experimental instrument for high school physics and mechanics based on internet of things as claimed in claim 1, wherein: the sealing cover is provided with air holes, the air holes are detachably provided with plugs, the sealing cover is fixedly connected with a buffer cushion arranged in the inner cavity, and the buffer cushion is in a circular ring shape.
8. The multifunctional experimental instrument for high school physics and mechanics based on internet of things as claimed in claim 1, wherein: the intelligent control system is characterized by further comprising an Internet of things module, the Internet of things module is electrically connected with the single chip microcomputer, and the power supply module is further used for supplying power to the Internet of things module.
9. The multifunctional experimental instrument for high school physics and mechanics based on internet of things as claimed in claim 1, wherein: the number of the annular proximity switches is two.
10. The multifunctional experimental instrument for high school physics and mechanics based on internet of things as claimed in claim 1, wherein: the experiment pipe is made of transparent materials, and the power module is a lithium battery.
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