55results about How to "Reduce the difficulty of teaching" patented technology

The invention discloses an offline programming based planning method for a polishing track of a workpiece clamped by a robot. A robot model is guided into three-dimensional modeling software, and constraints are set for a clamp and the workpiece and a robot tool parameter is set; a user coordinate system pose parameter of the robot is set; the optimal pose of each position on the polishing track is calculated, a polishing curve is discretized into interpolate points of an appointed number, and at the same time the normal vector and the tangent vector of each interpolate point are calculated; and a polishing track point planning algorithm is a planning algorithm of the track for the robot to clamp the workpiece for machining, and the pose of a robot tool coordinate system is obtained, converted into an order format stipulated by a controller, and then guided out to an execution mechanism for execution. By means of the method, the robot can be used only by finely adjusting the position manually, and the teaching difficulty is reduced. In the method, the algorithm of the robot to clamp the workpiece for machining is provided, and the problem of robot offline track planning under the condition that a robot terminal pose point and an actual movement terminal are not consistent is solved.

The invention discloses a method for realizing computer-aided teaching via virtual reality and software research and development technologies. A teaching management platform is built via software development technologies and provides a series of standard WEB interface service; expansion programs for common tools are developed via application program secondary development technologies, the expansion programs call interface service of the teaching management platform when providing basic integrated functions, and therefore seamless connection between the teaching management platform and the common tools is realized; the teaching management platform comprises the following modules: an our work space module, a teaching courseware management module, a teaching practical training module, a system integration module, a teaching test module, a teaching assessment and feedback module, a query and searching module and a privilege management module. Via use of the method, a teacher can be helped to finish teaching management tasks, teaching test tasks, and teaching assessment and feedback tasks. Real learning and practical training environments are simulated via adoption of computer simulation technologies, learning and testing can be realized via an interaction mode, and optimal teaching and learning effects can be achieved.

The invention discloses a management method of a teaching data management device for an intelligent teaching system. The method comprises the following steps: acquiring information of a course selected by a learning terminal; transmitting the teaching data information of the course to a browser of the learning terminal through a cloud server. The invention further discloses a management device of the teaching data management device for the intelligent teaching system. The management method and the management device are suitable for an online education platform, the simple video recording and playing way of the conventional online education is broken, interactive teaching is combined with online education, a brand new interactive education system is provided, the learning efficiency of students is increased, the teaching difficulty of is lowered for teachers, and substantial innovation is made on the conventional remote online learning system.

The invention relates to a flexible self-adaptive mechanism for a polisher. The flexible self-adaptive mechanism comprises a main shaft and a tool shank arranged at the front end of the main shaft; the main shaft is sleeved and connected with through a bolt; the support frame comprises a cylinder sleeve and a bulge arranged at one end of the cylinder sleeve, and the outer wall of the main shaft is sleeved with the cylinder sleeve; the main shaft next to the side of the bulge is sleeved with the supporting seat; the supporting seat comprises a circular ring cake and a supporting seat cylinder sleeve; the main shaft is sleeved with the circular ring cake; the supporting seat cylinder sleeve is connected onto the outer ring of the circular ring cake, extends in the direction of the circular ring cake and covers the bulge of the support frame; a gap is formed between the circular ring cake of the supporting seat and the main shaft; a position on the inner wall of the cylinder sleeve of the supporting seat corresponding to position of the bulge of the support frame is arc-shaped; the circumferential surface of the bulge is arc-shaped; a pneumatic cylinder body is arranged in the supporting seat; eight groups of piston rod round pins and piston round pins are arranged in the pneumatic cylinder body; the piston rod round pins are pushed out in the direction of the bulge of the support frame. The flexible self-adaptive mechanism for the polisher has a benefit that the constant polishing contact force is guaranteed through keeping constant air pressure.

The invention discloses a flight and maintenance simulator based on Prepar 3D. The flight and maintenance simulator based on Prepar 3D comprises a flight simulator, an aircraft maintenance simulator and an interactive client system. By the flight simulator, relevant training scenes such as aviation, navigation and land are established on the basis of a Prepar 3D platform. In the scenes, immersivetraining can be carried out in an extremely real environment. Prepar 3D can quickly build a simulation scene in a virtual world. The simulation scenes comprise an air conditioning system simulation model, an automatic driving system simulation model, a communication system simulation model and a power system simulation model; the virtual flight system based on Prepar 3D can be applied to teachingof flight and aircraft maintenance practice courses, can enable students to add a new learning way to learn in the multiple directions in an immersion manner and enable the students to comprehensivelyunderstand the structural characteristics, inspection processes, matters needing attention and the like of a whole aircraft before the students operate on a real aircraft, and thus, the benefit of classroom teaching is improved.

The present invention discloses a low-voltage power supply system fault diagnosis training device, which is composed of a three-phase isolation transformer, a three-phase circuit breaker, a simulated fault connector, a simulated load, a switch, a grounding plate and a simulated grounding resistor. These components are connected with each other via connecting wires. The device of the invention can reduce the teaching difficulty and increase the teaching efficiency for the courses of the electricity-supply major. The device is also highly safe and reliable.

Novel laser teaching equipment comprises a base, a key device, a processing device, a fragrance excitation device, a display device and a sound making device; keys are used for sending key electric signals after pressing; each recognition part comprises a sticking layer, a recognition layer and a fluorescent layer which are sequentially arranged in an overlapped manner; the processing device is used for sending a laser control electric signal, a display control electric signal and a sound making control electric signal; the fragrance excitation device comprises a plurality of laser transmitters and a plurality of fragrant liquid storage components; the laser transmitters are used for receiving and responding to the laser control electric signal and sending laser beams to the fragrant liquid storage components. According to the novel laser teaching equipment, by arranging the base, the key device, the processing device, the fragrance excitation device, the display device and the sound making device, recognition and memory abilities of children can be enhanced from three aspects of fragrance, image and sound, so that the teaching difficulty is low and the teaching effect is good.

The invention discloses a guitar used for introductory guidance and learning, which comprises a sound box (1) and a neck (2) connected with the sound box (1), the upper end of the neck (2) is connected with the headstock (3), and the neck (2) There is a fingerboard placement groove (4) inside, and a wiring groove (5) is arranged in the fingerboard placement groove (4), and a transmission wire is arranged in the wiring groove (5), and the fingerboard (6) is set on the fingerboard Placed in the groove (4), a group of grids (7) are arranged on the fingerboard (6), and electroluminescent sheets (8) are arranged in the grilles (7), and the electroluminescent sheets (8) are connected with transmission wires. The invention reduces the difficulty of teaching when beginners learn the guitar, can shorten the teaching time, and is convenient for students to detect whether the playing is accurate during practice.

The invention discloses a geography teaching model convenient for demonstration, which comprises a base. Block 1, a connecting rod 1 is movably installed on the left side of the cover block 1, the top of the connecting rod 1 is fixedly connected with a sphere 2, the surface of the connecting rod 1 is fixedly connected with a support block, and the top of the connecting rod 1 is fixedly connected with a support block. The surface is socketed with a sleeve block two at the top of the support block. The present invention achieves the effect of being able to fix the second block by setting the first connecting rod, the support block, the second block, the second connecting rod, the third sphere, the fixed block and the fixed rod, so that the second block cannot be rotated, and the The three spheres are fixed, so that the lecturer can explain without manually supporting the moon, thereby reducing the difficulty of teaching for the lecturer, making the lecturer less likely to feel tired, and being convenient for people to use.

The invention relates to a safety chemical experiment demonstration device and belongs to the technical field of chemical appliances.The safety chemical experiment demonstration device comprises a demonstration device body, a power supply switch is arranged on the upper side of the demonstration device body, a background screen switch is arranged in front of the power supply switch, an operation port is arranged in front of the background screen switch, an observation window frame is arranged in the front of the demonstration device body, hinge connection pieces are arranged on the observation window frame and are connected with hinges, the hinges are connected with a glass observation window, a fixing plate is arranged on the lower side of the glass observation window and is connected with a magnetic attraction lock, a first handle connection piece is arranged on the fixing plate and is connected with a handle, rotary knob openings are formed in the lower side of the fixing plate, and height-adjusting rotary knobs are arranged in the rotary knob openings.The safety chemical experiment demonstration device has complete functions and is convenient to use, time saving and labor saving during chemical experiment demonstration, scientific, safe, efficient and capable of lowering teaching difficulty of chemistry teachers.

The invention provides a robot friction stir welding track planning method based on offline programming. The robot friction stir welding track planning method comprises the following steps that a three-dimensional model is constructed; the three-dimensional model is imported into offline programming software, the working environment layout of the three-dimensional model is completed by utilizing the offline programming software, tool parameters of a robot are established according to the actual size of a robot clamp, user coordinate system pose parameters of the robot are established according to the positions of a to-be-welded workpiece and a welding tool, and a spline curve is drawn at the welding position of the to-be-welded workpiece to serve as a welding track; the welding track is imported into the offline programming software completing the working environment layout, and a reference welding track is generated according to the three-dimensional model; a robot controller controls the robot to execute the welding process on the to-be-welded workpiece, and an actual welding track is generated; and a deviation value between the actual welding track and the reference welding track is acquired, the reference welding track is corrected by utilizing the deviation value, and therefore a standard welding track is formed. Operation is simple and practical, and production efficiency and welding accuracy are improved.

Laser teaching equipment comprises a base, a button device, a processing device, a fragrance stimulation device, a display device and sounding devices, wherein a mounting cavity communicated with the outside is formed in the base; through holes are formed in the base and respectively communicated with the mounting cavity and the outside; the button device comprises buttons correspondingly provided with identification parts; the processing device sends a laser control electric signal, a display control electric signal and a sounding control electric signal; laser transmitters are used for receiving and responding to the laser control electric signal and sending laser beams toward fragrant liquid storage components, and enabling fragrant liquids in the fragrant liquid storage components to volatilize and generate fragrance. According to the laser teaching equipment, due to the base, the button device, the processing device, the fragrance stimulation device, the display device and the sounding devices, the identification and memory functions of children can be enhanced in three aspects of fragrance, image and sound, so that not only is the teaching difficulty reduced, but also the teaching effect is excellent.

The invention discloses a circuit teaching system based on pen interaction. The circuit teaching system comprises a result presentation module, a hand drawing input processing module, a circuit element classifier module, a character classifier module, a handwritten data annotation recognition module, a stroke segmentation module, a circuit diagram analysis module and a circuit calculation module.The result presentation module is connected with the circuit calculation module; the circuit calculation module is connected with the circuit diagram analysis module, the circuit diagram analysis module is connected with the stroke segmentation module, the handwritten data annotation recognition module and the circuit element classifier module, the handwritten data annotation recognition module isconnected with the character classifier module, and the stroke segmentation module is connected with the hand drawing input processing module. Meanwhile, the invention also discloses a hand-drawn circuit diagram-oriented identification and understanding method. The method can be applied to middle school physics classroom teaching, middle school teaching material writing and actual physics problemsolving, a hand-drawn circuit diagram can be accurately recognized, drawn components are printed on a screen after standard normalization, and the method is convenient and practical.

The invention discloses a tray grabbing device for reducing the teaching difficulty of a robot and an operation method thereof. The tray grabbing device is composed of a part mounted at the tail end of a manipulator and a part mounted at the tray end. Parts such as a manipulator end positioning shaft, a wedge-shaped supporting block and the like are installed at the tail end of the manipulator, and parts such as a tray end positioning block, a wedge-shaped adjusting block and the like are installed at the end of the tray, so that the tail end of the manipulator and the tray end realize clamping and positioning through the conical surface matching between the tray end positioning block and the manipulator end positioning shaft and the inclined surface matching between the wedge-shaped supporting block and the wedge-shaped adjusting block. The tray grabbing device is simple in structure, convenient to teach, space-saving, stable and reliable.

The invention discloses a flash card teaching aid. A flash card playing part and a flash card collecting part are arranged, and the flash card collecting part receives flash cards played by the flash card playing part; the flash card playing part is provided with a first shell, a playing mechanism arranged in the first shell and a control panel for controlling the playing mechanism to play a flash card; a display area used for displaying a flash card is arranged on one side face of the first shell; when the playing mechanism drives the flash card to pass through the display area, the playing mechanism plays audio corresponding to the flash card at the same time, when the flash card teaching aid is needed for teaching, only the flash card needs to be placed in the flash card playing part, the playing mechanism of the flash card playing part drives the flash card to the display area used for displaying the flash card through operation of the control panel, the playing mechanism plays the audio corresponding to the display card, so that the teaching effect is achieved, compared with existing flash card teaching, the flash card teaching aid only needs to operate the control panel in the teaching process, the flash card teaching difficulty is reduced, and children can be conveniently educated.