CN111292566A

CN111292566A - Automobile experiment teaching and demonstration platform

Info

Publication number: CN111292566A
Application number: CN202010133117.2A
Authority: CN
Inventors: 陈玉萍; 石松伟; 张家梅
Original assignee: 陈玉萍
Priority date: 2020-03-01
Filing date: 2020-03-01
Publication date: 2020-06-16

Abstract

The invention provides an automobile experiment teaching and demonstration platform, which comprises an experiment table body, wherein the top of the experiment table body is provided with an operating platform, a lifting device is arranged between the operating platform and the experiment table body, a shielding protection device is arranged between each side of the operating platform and the experiment table body, a panoramic camera and a tracking camera are also arranged on the operating platform, an adjusting device is arranged between the panoramic camera and the operating platform, a tracking adjusting device is arranged between the tracking camera and the operating platform, a central processing unit, a wireless transmission module, a focusing control unit, a lifting control unit, a tracking control unit and an image processing unit which are connected together are also arranged on the experiment table body, the wireless transmission module is connected with a control bracelet, a control bracelet signal generator is arranged in the control bracelet, and the image processing unit is connected with the panoramic camera, the tracking camera and a projector, the invention has the characteristics of adjustable height, high use safety and good teaching and demonstration effects.

Description

Automobile experiment teaching and demonstration platform

Technical Field

The invention relates to the technical field of education and teaching, in particular to an automobile experiment teaching and demonstration platform.

Background

In the automobile teaching process, a teacher often can arrange some automobile experiment classes in the teaching process in order to enable students to obtain profound cognition on some automobile structures, and the teacher operates experiments to demonstrate and teach the students. The automobile experiment table is an experiment operation platform which is necessary for students to carry out automobile experiments and teachers to carry out automobile experiment teaching, is generally transversely similar to a desk in design and is generally one experiment table or a plurality of experiment tables arranged side by side.

The existing commonly used experiment table mainly has the following problems: firstly, the existing common experiment table is almost as basic as a desk, the experiment operation of a teacher cannot be amplified, students in the back row can not see or can not see the operation of the teacher clearly, and the teaching demonstration of the teacher and the learning of the students are not facilitated; secondly, the height of the prior common experiment table is fixed, so that teachers and students with high or low heights are very uncomfortable to use.

Therefore, an automobile experiment teaching and demonstration platform capable of solving the above problems is needed.

Disclosure of Invention

The invention provides an automobile experiment teaching and demonstration platform capable of solving the problems.

The technical scheme of the invention is realized as follows: the automobile experiment teaching and demonstrating platform comprises an experiment table body, wherein a plurality of storage cabinets for storing instruments used for experiments are arranged in the experiment table body, an operating platform is horizontally arranged at the top of the experiment table body and is parallel to the experiment table body, a lifting device is arranged between the operating platform and the experiment table body, and a shielding protection device is arranged between each side of the operating platform and the experiment table body;

the operation platform is provided with a first mounting seat and a second mounting seat, a panoramic camera is arranged on the first mounting seat, an adjusting device is arranged between the panoramic camera and the first mounting seat, a tracking camera is arranged on the second mounting seat, and a tracking adjusting device is arranged between the tracking camera and the second mounting seat;

still be provided with control system on the laboratory bench body, control system includes central processing unit, wireless transmission module, focus control unit, lifting control unit, tracking control unit and image processing unit, central processing unit all is connected with focus control unit, lifting control unit, tracking control unit, wireless transmission module and image processing unit, wireless transmission module is connected with the control bracelet, be provided with signal generator in the control bracelet, the image processing unit is the electricity with panoramic camera and tracking camera and is connected, connects the image processing unit and still is connected with the projecting apparatus.

As a preferable technical proposal, the lifting device comprises an installation groove arranged at the top of the experiment table body, a first sliding groove and a second sliding groove are respectively arranged at the two sides of the bottom of the mounting groove, a first hydraulic oil cylinder fixed on the side wall of the mounting groove is arranged at the outer side of the first sliding groove, a first hinge seat is arranged in the first sliding groove in a sliding manner, a piston rod of the first hydraulic oil cylinder is fixed on the first hinge seat, the first hinge seat is hinged with a first supporting arm, the other end of the first supporting arm is hinged with the bottom of the operating platform, the middle part of the first supporting arm is hinged with a second supporting arm which is arranged in a crossed way with the first supporting arm, one end of the second supporting arm is hinged to the bottom of the mounting groove, and the other end of the second supporting arm is hinged to the bottom of the operating platform.

As a preferred technical scheme, the lifting device further comprises a second hydraulic oil cylinder fixed on the other side wall of the mounting groove, a second hinge seat is slidably mounted in the second sliding groove, a piston rod of the second hydraulic oil cylinder is fixed on the second hinge seat, a third support arm parallel to the second support arm is hinged to the second hinge seat, the other end of the third support arm is hinged to the bottom of the operating platform, a fourth support arm parallel to the first support arm is hinged to the middle of the third support arm, one end of the fourth support arm is hinged to the bottom of the mounting groove, and the other end of the fourth support arm is hinged to the bottom of the operating platform.

As an optimal technical scheme, each shielding protection device comprises a rotating shaft rotatably installed on one side of the experiment table body, a torsion spring is respectively arranged between two ends of each rotating shaft and the experiment table body, a flexible side wall is wound on each rotating shaft, and the movable end of each flexible side wall is fixed on the side wall of the operation platform.

As a preferred technical scheme, the adjusting device comprises a first mounting cavity arranged in the first mounting seat, a horizontal adjusting rod is horizontally arranged in the first mounting cavity, one end of the horizontal adjusting rod extends out of the outer side wall of the first mounting seat, a rotating handle is arranged at one end of the horizontal adjusting rod, a first bevel gear is fixedly mounted at the other end of the horizontal adjusting rod, a second bevel gear is meshed with the first bevel gear and is perpendicular to the second bevel gear, the second bevel gear is mounted at one end of a vertical adjusting rod, the vertical adjusting rod is perpendicular to the horizontal adjusting rod, the other end of the vertical adjusting rod extends out of the top of the second mounting seat, and the panoramic camera is fixed on the vertical adjusting rod.

As a preferred technical scheme, trail adjusting device including vertical set up in the second installation cavity on the second mount pad, slidable mounting has the lift mount pad in the second installation cavity, be provided with lift cylinder between lift mount pad and the second installation cavity, lift cylinder's cylinder body is fixed in the bottom of second installation cavity, lift cylinder's piston rod is fixed in the bottom of lift mount pad, be provided with on the lift mount pad by rotatory cylinder drive pivoted rotation mount pad, the upper end of rotating the mount pad stretches out the top of second mount pad, trail the camera set up in rotate on the mount pad.

As a preferred technical scheme, the lifting control unit is connected with the first hydraulic oil cylinder and the second hydraulic oil cylinder, and the tracking control unit is connected with the lifting oil cylinder and the rotating oil cylinder.

As a preferred technical scheme, car experiment teaching and demonstration platform still includes a wear-type synchronous teaching demonstration camera device, wear-type synchronous teaching demonstration camera device is including wearing overhead head hoop, the outside of head hoop is equipped with a fixing base, rotate through actuating mechanism rotation installation on the fixing base and rotate the seat, it is fixed with first micro motor to rotate on the seat, it installs the mount pad to rotate on first micro motor's the motor shaft, the one end of mount pad is fixed with the synchronous camera that is connected with multimedia apparatus through detachable mechanism, the other end of mount pad is fixed with second micro motor, install on the motor shaft of second micro motor and push up in the gyroscope of synchronous camera one end, still be fixed with the power supply case that is used for the power supply on the fixing base, the power supply case with first micro motor, The second micro motor and the synchronous camera are electrically connected.

As a preferred technical scheme, actuating mechanism including set up in first installation cavity on the fixing base, rotate in the first installation cavity through the axis of rotation install one with rotate the coaxial turbine that sets up of seat, the one end of axis of rotation rotate install in on the first installation intracavity wall, the other end of axis of rotation stretches out the fixing base, rotate seat fixed mounting in the other end of axis of rotation, the below of turbine rotate install one with the worm that the turbine meshed mutually, the one end of worm stretches out first installation cavity, the worm stretches out the one end fixed mounting of first installation cavity is on third micro motor's motor shaft, third micro motor's casing is fixed in on the fixing base.

As a preferred technical scheme, the detachable mechanism comprises a sliding seat, a sliding cavity parallel to the synchronous camera is arranged in the sliding seat, one end of the mounting seat close to the sliding seat is slidably mounted in the sliding cavity, a connecting plate perpendicular to the mounting seat is fixed at the bottom of the mounting seat, a second mounting cavity opposite to the connecting plate is further arranged in the sliding seat, a return spring is arranged in the second mounting cavity, one end of the return spring is fixed on the inner wall of the second mounting cavity, and the other end of the return spring extends out of the second mounting cavity and is fixed on the connecting plate;

a fixing plate parallel to the connecting plate is arranged at one end of the sliding seat, the end part of the front end of the synchronous camera abuts against the fixing plate, a through hole opposite to the synchronous camera is formed in the fixing plate, a camera is arranged at the front end of the synchronous camera, and the camera penetrates through the through hole and extends out of the fixing plate;

the end part of the gyroscope is provided with a clamping groove for fixing the synchronous camera, and the rear end of the synchronous camera is clamped in the clamping groove.

By adopting the technical scheme, the invention has the beneficial effects that:

when the height-adjustable operation platform is used, a teacher can control the lifting of the operation platform only by controlling the operation of the bracelet, the operation is very simple, the heights, body types and the like of different teachers are different, the height of the operation platform is adjusted to be the most comfortable height for the teacher, and the use comfort of the height-adjustable operation platform is improved. When the operation platform is lowered, the torsion spring is not subjected to the action of external force any more, the rotating shaft is driven to rotate reversely under the action of self elastic force, each flexible side wall moves downwards under the action of the corresponding rotating shaft and is wound on the rotating shaft, the four flexible side walls are guaranteed to always shield and protect the operation platform and the experiment table body, the lifting device is prevented from being damaged by accidental collision when the operation platform is raised, meanwhile, surrounding teachers and students are prevented from being injured by the lifting device, and the use safety of the invention is improved. The teacher can be according to the difference of oneself operating region, adjust panoramic camera's angle, guarantee that teacher's experiment and demonstration condition can be shot, and on the projection of projecting apparatus arrives the large screen, and simultaneously, the position that the tracking camera can real-time tracking control bracelet, the region that is operating the teacher focuses on and enlargies the shooting, on the projection of projecting apparatus arrives the large screen, make the student can be clear observe mr's operation process and operation key, thereby the effect of teacher's teaching and demonstration has been improved.

Because the head-wearing type synchronous teaching demonstration camera device comprises a head hoop, a fixed seat, a rotating seat, a mounting seat and a synchronous camera, the method of the invention is as follows:

firstly, selecting a proper synchronous camera according to the conditions of size, type and the like of an article to be displayed, pulling a sliding seat outwards by a teacher with a hand to enable the sliding seat to be far away from a mounting seat, stretching a return spring at the moment, increasing the distance between a fixed plate and a gyroscope, clamping the rear end of the selected synchronous camera into a clamping groove at the end part of the gyroscope, horizontally placing the synchronous camera at the top of the mounting seat, loosening the hand for pulling the sliding seat, driving the sliding seat to move back to the original position under the elastic force of the return spring, abutting a fixed plate against the front end part of the synchronous camera, fixing the synchronous camera by the fixed plate and the gyroscope together, and extending the camera out of the fixed plate through a through hole;

secondly, the first micro motor drives the mounting seat and the synchronous camera to rotate, the camera realizes shooting at the front, the rear and the two sides of the head of the teacher, the third micro motor is started to drive the worm to rotate, the worm drives the turbine and the rotating seat to rotate, the camera can shoot above, below and the two sides of the head of the teacher, the synchronous camera transmits pictures shot by the camera to multimedia equipment in the classroom in real time, and the multimedia equipment transmits the shot pictures to a large screen for demonstration of students.

Compared with the traditional wearable teaching demonstration camera device in which the shooting angle of the camera cannot be adjusted, the teaching demonstration camera device can shoot the direction of an object relative to the head of a teacher according to the needs, the shooting range of the synchronous camera can be adjusted, the object in any direction can be shot by taking the head of the teacher as the center, and the shooting range of the synchronous camera is greatly expanded; meanwhile, the gyroscope is clamped at the rear end of the synchronous camera, the gyroscope can adjust the synchronous camera in real time, the problem that the camera shakes due to shaking of the head of a teacher is avoided, and if the camera shakes seriously, the shot picture shakes or is blurred, so that the shooting stability of the camera is improved, and the picture shot by the camera is guaranteed to be clear all the time; and the synchronous camera can be detachably fixed on the mounting seat and the sliding seat, so that the assembly and disassembly are very simple, and teachers can select different types of synchronous cameras according to different required display articles or environments.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

FIG. 4 is an enlarged view of the structure at C in FIG. 1;

FIG. 5 is a schematic diagram of the control system connections of the present invention;

FIG. 6 is a schematic structural view of the present invention;

FIG. 7 is a side view of FIG. 6;

FIG. 8 is a side view of FIG. 7;

FIG. 9 is a schematic view of the drive mechanism of the present invention;

fig. 10 is a schematic structural view of the detachable mechanism of the present invention.

Wherein: 1. a test bed body; 2. a storage cabinet; 3. an operating platform; 4. a first mounting seat; 5. a second mounting seat; 6. a panoramic camera; 7. a tracking camera; 8. a central processing unit; 9. a signal generator; 10. A wireless transmission module; 11. a focus control unit; 12. a lift control unit; 13. a tracking control unit; 14. an image processing unit; 15. controlling the bracelet; 16. a projector; 17. installing a groove; 18. a first sliding groove; 19. a second sliding groove; 20. a first hydraulic cylinder; 21. a first hinge mount; 22. a first support arm; 23. a second support arm; 24. a second hydraulic cylinder; 25. a second hinge mount; 26. a third support arm; 27. a fourth support arm; 28. a rotating shaft; 29. a torsion spring; 30. a flexible side wall; 31. a first mounting cavity; 32. a horizontal adjusting rod; 33. rotating the handle; 34. a first bevel gear; 35. a second bevel gear; 36. a vertical adjusting rod; 37. a second mounting cavity; 38. a lifting mounting seat; 39. a lift cylinder; 40. Rotating the oil cylinder; 41. rotating the mounting seat; 42. a head band; 43. a fixed seat; 44. a rotating seat; 45. a first micro motor; 46. a mounting seat; 47. synchronizing the cameras; 48. a second micro motor; 49. a gyroscope; 50. a power supply box; 51. a first mounting cavity; 52. a rotating shaft; 53. a turbine; 54. a worm; 55. a third micro motor; 56. a sliding seat; 57. a sliding cavity; 58. a connecting plate; 59. a second mounting cavity; 60. a return spring; 61. a fixing plate; 62. a through hole; 63. a camera; 64. and (4) clamping the groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the platform for teaching and demonstrating automobile experiments comprises an experiment table body 1, wherein a plurality of storage cabinets 2 for storing instruments used for experiments are arranged in the experiment table body 1, and the storage cabinets 2 can be used for placing various instruments used for automobile experiments, so that the experimental instruments are prevented from being damaged when being placed on a table, the safety of the experiment table is improved, and meanwhile, the experimental instruments do not need to be stored in other places, and the space of the experiment table is fully utilized; the top of laboratory bench body 1 is equipped with operation platform 3 that the level set up, and operation platform 3 is on a parallel with laboratory bench body 1, is provided with elevating gear between operation platform 3 and the laboratory bench body 1, all is provided with one between every side of operation platform 3 and the laboratory bench body 1 and shelters from protection device.

The operation platform 3 is provided with a first mounting seat 4 and a second mounting seat 5, the first mounting seat 4 is provided with a panoramic camera 6, an adjusting device is arranged between the panoramic camera 6 and the first mounting seat 4, the second mounting seat 5 is provided with a tracking camera 7, and the tracking adjusting device is arranged between the tracking camera 7 and the second mounting seat 5.

The experiment table body 1 is also provided with a control system, the control system comprises a central processing unit 8, a wireless transmission module 10, a focusing control unit 11, a lifting control unit 12, a tracking control unit 13 and an image processing unit 14, the central processing unit 8 is connected with the focusing control unit 11, the lifting control unit 12, the tracking control unit 13, the wireless transmission module 10 is connected with the image processing unit 14, the wireless transmission module 10 is connected with a control bracelet 15, a signal generator 9 is arranged in the control bracelet 15, the signal generator 9 adopts an ultrasonic sensor to detect the position, the ultrasonic sensor comprises an ultrasonic transmitter and an ultrasonic receiver, the ultrasonic transmitter and the ultrasonic receiver can be multiple, the ultrasonic transmitter is arranged on the bracelet, the ultrasonic receiver is arranged on the corresponding camera, and the ultrasonic sensor belongs to the technology known by ordinary technicians in the field, again, it is no longer described, the image processing unit 14 is electrically connected to both the panoramic camera 6 and the tracking camera 7, the connection image processing unit 14 is further connected to the projector 16, in this embodiment, the central processing unit 8 employs a single chip microcomputer of STM32F103VCT6 model, the wireless transmission module employs a 4G communication module of NRF24L01 model of NORDIC corporation, and the panoramic camera 6 and the tracking camera 7 both employ cameras of alient kov7670 model.

Wherein, elevating gear is including the mounting groove 17 of locating 1 top of laboratory bench body, the both sides of mounting groove 17 bottom are equipped with first slip recess 18 and second slip recess 19 respectively, the outside of first slip recess 18 is provided with the first hydraulic cylinder 20 that is fixed in on the mounting groove 17 lateral wall, slidable mounting has first articulated seat 21 in the first sliding tray, the piston rod of first hydraulic cylinder 20 is fixed in on first articulated seat 21, it has first support arm 22 to articulate on first articulated seat 21, the other end of first support arm 22 articulates in the bottom of operation platform 3, the middle part of first support arm 22 articulates there is second support arm 23, second support arm 23 and first support arm 22 cross arrangement, the one end of second support arm 23 articulates in the bottom of mounting groove 17, the other end of second support arm 23 articulates in the bottom of operation platform 3.

The lifting device also comprises a second hydraulic oil cylinder 24 fixed on the other side wall of the mounting groove 17, a second hinged seat 25 is arranged in the second sliding groove 19 in a sliding manner, a piston rod of the second hydraulic oil cylinder 24 is fixed on the second hinged seat 25, a third supporting arm 26 parallel to the second supporting arm 23 is hinged on the second hinged seat 25, the other end of the third supporting arm 26 is hinged at the bottom of the operating platform 3, a fourth supporting arm 27 parallel to the first supporting arm 22 is hinged at the middle part of the third supporting arm 26, one end of the fourth supporting arm 27 is hinged at the bottom of the mounting groove 17, the other end of the fourth supporting arm 27 is hinged at the bottom of the operating platform 3, when in use, a teacher only needs to control the bracelet 15 to operate, the lifting of the operating platform 3 can be controlled, the operation is very simple, and the heights and body sizes of different teachers are different, and the heights of the operating platform 3 are, the invention can be adjusted to the height most comfortable for teachers, and the use comfort of the invention is improved.

As shown in fig. 2, each shielding protection device comprises a rotating shaft 28 rotatably installed at one side of the experiment table body 1, a torsion spring 29 is respectively arranged between both ends of each rotating shaft 28 and the experiment table body 1, a flexible side wall 30 is wound on each rotating shaft 28, the movable end of each flexible side wall 30 is fixed on the side wall of the operation platform 3, when the operation platform 3 is lifted, the operation platform 3 is lifted to drive four side walls to move upwards and rotate if the four side walls are separated from the rotating shaft 28, meanwhile, each rotating shaft 28 rotates, the torsion spring 29 is twisted by the action of external force, when the operation platform 3 is lowered, the torsion spring 29 is not influenced by the external force any more, the rotating shaft 28 is driven to rotate reversely by the action of self elastic force, each flexible side wall 30 is driven to move downwards and wound on the rotating shaft 28 by the action of the corresponding rotating shaft 28, the four flexible side walls 30 are guaranteed to always shield and protect the operating platform 3 and the experiment table body 1, the lifting device is prevented from being damaged by accidental collision when the operating platform 3 rises, meanwhile, surrounding teachers and students are prevented from being injured by the lifting device, and the use safety of the invention is improved.

As shown in fig. 3, the adjusting device includes a first mounting cavity 31 disposed in the first mounting seat 4, a horizontal adjusting rod 32 is horizontally disposed in the first mounting cavity 31, one end of the horizontal adjusting rod 32 extends out of the outer side wall of the first mounting seat 4, one end of the horizontal adjusting rod 32 is provided with a rotating handle 33, the other end of the horizontal adjusting rod 32 is fixedly mounted with a first bevel gear 34, a second bevel gear 35 is meshed with the first bevel gear 34, the first bevel gear 34 and the second bevel gear 35 are vertically disposed, the second bevel gear 35 is mounted at one end of a vertical adjusting rod 36, the vertical adjusting rod 36 is perpendicular to the horizontal adjusting rod 32, the other end of the vertical adjusting rod 36 extends out of the top of the second mounting seat 5, and the panoramic camera 6 is fixed on the vertical adjusting.

As shown in fig. 4, the tracking adjustment device includes a second installation cavity 37 vertically disposed on the second installation seat 5, a lifting installation seat 38 is slidably installed in the second installation cavity 37, a lifting cylinder 39 is disposed between the lifting installation seat 38 and the second installation cavity 37, a cylinder body of the lifting cylinder 39 is fixed at the bottom of the second installation cavity 37, a piston rod of the lifting cylinder 39 is fixed at the bottom of the lifting installation seat 38, a rotating installation seat 41 driven to rotate by a rotating cylinder 40 is disposed on the lifting installation seat 38, the top of the second installation seat 5 extends out of the upper end of the rotating installation seat 41, and the tracking camera 7 is disposed on the rotating installation seat 41.

When using, the teacher can be according to the difference of oneself operating region, adjust panoramic camera's angle, guarantee that teacher's experiment and demonstration condition can be shot, and on 16 projections of projecting apparatus arrive the large screen, and simultaneously, tracking camera 7 can real-time tracking control bracelet 15's position, focus on the region that the teacher is operating and enlarge the shooting, on 16 projections of projecting apparatus arrive the large screen, make the student can be clear observe mr's operation process and operation key, thereby the effect of teacher's teaching and demonstration has been improved.

As shown in fig. 5, the elevation control unit 12 is connected to both the first hydraulic cylinder 20 and the second hydraulic cylinder 24, and the tracking control unit 13 is connected to both the elevation cylinder 39 and the rotation cylinder 40.

As shown in fig. 6-8, the head-mounted synchronous teaching demonstration camera device includes a head band 42 worn on the head, a fixing seat 43 is disposed on the outer side of the head band 42, a rotating seat 44 is rotatably mounted on the fixing seat 43 through a driving mechanism, a first micro motor 45 is fixed on the rotating seat 44, a mounting seat 46 is rotatably mounted on a motor shaft of the first micro motor 45, a synchronous camera 47 connected with the multimedia device is fixed at one end of the mounting seat 46 through a detachable mechanism, a second micro motor 48 is fixed at the other end of the mounting seat 46, a gyroscope 49 abutting against one end of the synchronous camera 47 is mounted on a motor shaft of the second micro motor 48, a power supply box 50 for supplying power is further fixed on the fixing seat 43, and the power supply box 50 is electrically connected with the first micro motor 45, the second micro motor 48 and the synchronous camera 47.

As shown in fig. 9, the driving mechanism includes a first mounting cavity 51 disposed on the fixing base 43, a worm wheel 53 disposed coaxially with the rotating base 44 is rotatably mounted in the first mounting cavity 51 through a rotating shaft 52, one end of the rotating shaft 52 is rotatably mounted on the inner wall of the first mounting cavity 51, the other end of the rotating shaft 52 extends out of the fixing base 43, the rotating base 44 is fixedly mounted on the other end of the rotating shaft 52, a worm 54 engaged with the worm wheel 53 is rotatably mounted below the worm wheel 53, one end of the worm 54 extends out of the first mounting cavity 51, one end of the worm 54 extending out of the first mounting cavity 51 is fixedly mounted on a motor shaft of a third micro motor 55, a housing of the third micro motor 55 is fixed on the fixing base 43, compared with the conventional wearable teaching demonstration camera device, the shooting angle of the camera cannot be adjusted, in the present invention, the direction of the object relative to the teacher's head can be shot, by adjusting the shooting range of the synchronization camera 47, the teacher can shoot the object in any direction with the head as the center, thereby greatly enlarging the shooting range of the synchronization camera 47.

As shown in fig. 10, the detachable mechanism includes a sliding seat 56, a sliding cavity 57 parallel to the synchronization camera 47 is provided in the sliding seat 56, one end of the mounting seat 46 close to the sliding seat 56 is slidably mounted in the sliding cavity 57, a connecting plate 58 perpendicular to the mounting seat 46 is fixed at the bottom of the mounting seat 46, a second mounting cavity 59 opposite to the connecting plate 58 is further provided in the sliding seat 56, a return spring 60 is provided in the second mounting cavity 59, one end of the return spring 60 is fixed on the inner wall of the second mounting cavity 59, and the other end of the return spring 60 extends out of the second mounting cavity 59 and is fixed on the connecting plate 58, in this embodiment, the return spring 60 is an extension spring.

The fixing plate 61 parallel to the connecting plate 58 is arranged at one end of the sliding seat 56, the end part of the front end of the synchronous camera 47 abuts against the fixing plate 61, the fixing plate 61 is provided with a through hole 62 opposite to the synchronous camera 47, the front end of the synchronous camera 47 is provided with a camera 63, and the camera 63 penetrates through the through hole 62 and extends out of the fixing plate 61.

In addition, the end part of the gyroscope 49 is provided with a clamping groove 64 for fixing the synchronous camera 47, and the rear end of the synchronous camera 47 is clamped in the clamping groove 64, in the invention, the gyroscope 49 is clamped at the rear end of the synchronous camera 47, the gyroscope 49 can adjust the synchronous camera 47 in real time, the problem that the camera 63 shakes due to shaking of the head of a teacher is avoided, if the camera 63 shakes seriously, the shooting picture is easy to shake or blur, so that the stability of shooting by the camera 63 is improved, and the picture shot by the camera 63 is ensured to be always clear.

Firstly, selecting a proper synchronous camera 47 according to the conditions of the size, the type and the like of an article to be displayed, pulling the sliding seat 56 outwards by a teacher with hands to enable the sliding seat 56 to be far away from the installation seat 46, stretching the return spring 60 at the moment, increasing the distance between the fixed plate 61 and the gyroscope 49, clamping the rear end of the selected synchronous camera 47 into the clamping groove 64 at the end part of the gyroscope 49, horizontally placing the synchronous camera 47 at the top of the installation seat 46, then loosening the hands for pulling the sliding seat 56, driving the sliding seat 56 to move back to the original position under the action of the elastic force of the return spring 60, enabling the fixed plate 61 to abut against the front end part of the synchronous camera 47, fixing the synchronous camera 47 by the fixed plate 61 and the gyroscope 49, and enabling the camera 63 to extend out of the fixed plate 61 through the through hole 62;

secondly, the first micro motor 45 drives the mounting seat 46 and the synchronous camera 47 to rotate, the camera 63 realizes shooting at the front, the rear and the two sides of the head of the teacher, the third micro motor 55 is started to drive the worm 54 to rotate, the worm 54 drives the worm wheel 53 and the rotating seat 44 to rotate, the camera 63 realizes shooting at the upper part, the lower part and the two sides of the head of the teacher, the synchronous camera 47 transmits the pictures shot by the camera 63 to the multimedia equipment in the classroom in real time, and the multimedia equipment transmits the shot pictures to a large screen for demonstration of students. This synchronous teaching demonstration camera device of wear-type can freely adjust the angle of making a video recording of synchronous camera 47 according to the position that article are located, has solved the problem that the shooting scope is little and camera 63 trembles to can change synchronous camera 47 as required, have that the shooting scope is big, the shooting image is stable clear, dismouting easy operation's characteristics.

The whole working process of the invention is as follows:

the teacher is according to the height of oneself, operation control bracelet 15 signals, give central processing unit 8 through wireless transmission module 10 with signal transmission, central processing unit 8 sends the signal of adjustment demonstration platform height, behind the lift control unit 12 received signal, the piston rod of the first hydraulic cylinder 20 of control and the piston rod of second hydraulic cylinder 24 stretch out simultaneously or withdraw, when operation platform 3 highly reaches the height that oneself is the most convenient, operation control platform sends stop signal, give central processing unit 8 through wireless transmission module 10 with signal transmission, central processing unit 8 sends stop signal, behind the lift control unit 12 received signal, control first hydraulic cylinder 20 and the stop motion of second hydraulic cylinder 24 simultaneously.

The second step is that the teacher is according to the region of oneself carrying out experiment and demonstration, rotate rotation handle 33, control horizontal adjusting rod 32 and first bevel gear 34 and rotate, first bevel gear 34 rotates and drives second bevel gear 35 and vertical regulation pole 36 and rotate, thereby drive panoramic camera and carry out the horizontal rotation, it enters to can all demonstrate the teacher and all shoot in the experimental region up to panoramic camera 6, stop rotating rotation handle 33 this moment, the picture that panoramic camera 6 shot conveys behind image processing unit 14 and carries out the projection on the projecting apparatus 16.

The third step is that when the teacher performs experiment and demonstration, the signal generator 9 arranged in the control bracelet 15 sends a position signal of the control bracelet 15, the position signal is sent to the central processing unit 8 through the wireless transmission module 10, the central processing unit 8 receives the signal and then sends a signal to the tracking control unit 13 and the focusing control unit 11, the tracking control unit 13 receives the signal and then controls the lifting oil cylinder 39 and the rotating oil cylinder 40 to start, the tracking camera 7 is driven to shoot an experiment and demonstration picture at the position of the control bracelet 15, after the focusing control unit 11 receives the signal, the tracking camera 7 focuses on the picture at the position of the control bracelet 15, so that the picture at the position is shot clearly, the head-wearing type synchronous teaching demonstration camera device can also shoot the upper part, the lower part and two sides of the head of a teacher, the pictures taken by the tracking camera 7 and the head-mounted synchronous teaching demonstration camera are then transmitted to the projector 16 for projection after passing through the image processing unit 14.

In conclusion, the automobile experiment teaching and demonstration platform provided by the invention has the characteristics of adjustable height, high use safety and good teaching and demonstration effects.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The automobile experiment teaching and demonstration platform comprises an experiment table body and is characterized in that a plurality of storage cabinets for storing instruments used for experiments are arranged in the experiment table body, an operation platform is horizontally arranged at the top of the experiment table body and is parallel to the experiment table body, a lifting device is arranged between the operation platform and the experiment table body, and a shielding protection device is arranged between each side of the operation platform and the experiment table body;

2. The platform for teaching and demonstrating automobile experiments as claimed in claim 1, wherein said lifting device comprises a mounting groove disposed on the top of said experiment table body, a first sliding groove and a second sliding groove are respectively disposed on both sides of the bottom of said mounting groove, a first hydraulic cylinder fixed on the sidewall of said mounting groove is disposed outside said first sliding groove, a first hinge seat is slidably mounted in said first sliding groove, a piston rod of said first hydraulic cylinder is fixed on said first hinge seat, a first supporting arm is hinged on said first hinge seat, the other end of said first supporting arm is hinged on the bottom of said operation platform, a second supporting arm is hinged in the middle of said first supporting arm, said second supporting arm is crossed with said first supporting arm, one end of said second supporting arm is hinged on the bottom of said mounting groove, the other end of the second supporting arm is hinged to the bottom of the operating platform.

3. The platform for teaching and demonstrating automobile experiments according to claim 1, wherein said lifting device further comprises a second hydraulic cylinder fixed to another side wall of said mounting groove, a second hinge seat is slidably mounted in said second sliding groove, a piston rod of said second hydraulic cylinder is fixed to said second hinge seat, a third supporting arm parallel to said second supporting arm is hinged to said second hinge seat, the other end of said third supporting arm is hinged to the bottom of said operating platform, a fourth supporting arm parallel to said first supporting arm is hinged to the middle of said third supporting arm, one end of said fourth supporting arm is hinged to the bottom of said mounting groove, and the other end of said fourth supporting arm is hinged to the bottom of said operating platform.

4. The platform for teaching and demonstrating experiments and vehicle experiments as claimed in claim 1, wherein each of said shielding protection devices comprises a rotation shaft rotatably mounted on one side of said experiment table body, a torsion spring is respectively disposed between both ends of each of said rotation shafts and said experiment table body, a flexible side enclosure is wound around each of said rotation shafts, and a movable end of each of said flexible side enclosures is fixed to a side wall of said operation platform.

5. The platform for teaching and demonstrating automobile experiments according to claim 1, wherein said adjusting device comprises a first mounting cavity disposed in said first mounting seat, a horizontal adjusting rod is horizontally disposed in said first mounting cavity, one end of said horizontal adjusting rod extends out of the outer side wall of said first mounting seat, one end of said horizontal adjusting rod is provided with a rotating handle, the other end of said horizontal adjusting rod is fixedly mounted with a first bevel gear, said first bevel gear is engaged with a second bevel gear, said first bevel gear and said second bevel gear are vertically disposed, said second bevel gear is mounted at one end of a vertical adjusting rod, said vertical adjusting rod is perpendicular to said horizontal adjusting rod, the other end of said vertical adjusting rod extends out of the top of said second mounting seat, and said panoramic camera is fixed on said vertical adjusting rod.

6. The automobile experiment teaching and demonstration platform of claim 1, wherein the tracking adjustment device comprises a second mounting cavity vertically arranged on the second mounting seat, a lifting mounting seat is slidably mounted in the second mounting cavity, a lifting oil cylinder is arranged between the lifting mounting seat and the second mounting cavity, a cylinder body of the lifting oil cylinder is fixed at the bottom of the second mounting cavity, a piston rod of the lifting oil cylinder is fixed at the bottom of the lifting mounting seat, a rotating mounting seat driven to rotate by the rotating oil cylinder is arranged on the lifting mounting seat, the upper end of the rotating mounting seat extends out of the top of the second mounting seat, and the tracking camera is arranged on the rotating mounting seat.

7. The platform for teaching and demonstrating automobile experiments as claimed in claim 1, wherein said lift control unit is connected to said first hydraulic cylinder and said second hydraulic cylinder, and said tracking control unit is connected to said lift cylinder and said swivel cylinder.

8. The platform of claim 1, further comprising a head-mounted synchronous teaching demonstration camera device, wherein the head-mounted synchronous teaching demonstration camera device comprises a head band mounted on a head, a fixing seat is disposed on an outer side of the head band, a rotating seat is rotatably mounted on the fixing seat through a driving mechanism, a first micro motor is fixed on the rotating seat, a mounting seat is rotatably mounted on a motor shaft of the first micro motor, a synchronous camera connected with multimedia equipment is fixed at one end of the mounting seat through a detachable mechanism, a second micro motor is fixed at the other end of the mounting seat, a gyroscope abutting against one end of the synchronous camera is mounted on a motor shaft of the second micro motor, and a power supply box for supplying power is further fixed on the fixing seat, the power supply box is electrically connected with the first micro motor, the second micro motor and the synchronous camera.

9. The platform for teaching and demonstrating automobile experiments as claimed in claim 8, wherein said driving mechanism includes a first mounting cavity disposed on said fixing base, a worm gear disposed coaxially with said rotating base is rotatably mounted in said first mounting cavity via a rotating shaft, one end of said rotating shaft is rotatably mounted on an inner wall of said first mounting cavity, the other end of said rotating shaft extends out of said fixing base, said rotating base is fixedly mounted on the other end of said rotating shaft, a worm engaged with said worm gear is rotatably mounted under said worm gear, one end of said worm extends out of said first mounting cavity, one end of said worm extending out of said first mounting cavity is fixedly mounted on a motor shaft of a third micro motor, and a housing of said third micro motor is fixed on said fixing base.

10. The platform for teaching and demonstrating automobile experiments according to claim 9, wherein said detachable mechanism includes a sliding seat, a sliding cavity parallel to said synchronous camera is provided in said sliding seat, one end of said mounting seat near said sliding seat is slidably mounted in said sliding cavity, a connecting plate perpendicular to said mounting seat is fixed to the bottom of said mounting seat, a second mounting cavity is provided in said sliding seat and opposite to said connecting plate, a return spring is provided in said second mounting cavity, one end of said return spring is fixed to the inner wall of said second mounting cavity, and the other end of said return spring extends out of said second mounting cavity and is fixed to said connecting plate;