A multi-scene bivariate interactive teaching demonstration device

Abstract

The present application relates to the technical field of teaching instruments and cognitive training, and discloses a multi-scene double-variable interactive teaching demonstration device, which is based on the same set of hardware (two knobs + display screen + microcontroller + case selection switch + mode selection switch). By switching the pre-stored case library, dozens of teaching knowledge points of multiple disciplines such as electrical engineering, circuit principle and automatic control can be covered. There is no need to develop an expensive experimental box for each principle separately. The device is multi-purpose and low in cost. The synergistic relationship between two coupled variables in an abstract theorem is mapped to the real cooperation or confrontation between two students, which is closer to the real engineering multi-post collaborative scene and more profound in cognition. Through the case switching operation of multiple different parameter ranges and different initial conditions, the cognitive process of applying general rules to new special cases is realized, and the blank of the existing teaching instrument in the knowledge transfer ability training is effectively filled.

Description

Technical Field

[0001] This invention relates to the field of teaching instruments and cognitive training technology, specifically a multi-scenario, dual-variable interactive teaching demonstration device. Background Technology

[0002] Demonstration-based teaching is a method in which teachers convey knowledge by displaying physical objects, models, or multimedia materials. It aims to transform abstract principles into concrete forms to enhance students' sensory understanding. Its core components include presenting the topic, explaining the objectives, demonstrating the operation, and reinforcing through practice. When implementing this method, it is necessary to select visual aids such as live organisms or specimens based on the teaching content. This method reinforces understanding through breaking down steps and repeating them.

[0003] University students often face a cognitive dilemma when studying science, engineering, economics, and management: they tend to focus on memorizing knowledge points and solving problems, memorizing a large number of formulas and theorems, but lack a concrete and intuitive understanding of the dialectical relationship between "general and specific". As a result, although students can memorize formulas fluently, they are often unable to apply them flexibly when faced with specific and ever-changing practical problems.

[0004] Existing technologies lead students to passively accept formulas and conclusions, making it difficult for them to intuitively grasp the coupling effects when two variables change dynamically simultaneously. Furthermore, most existing experimental equipment is designed for single-person, single-variable adjustment. Even when dual-variable adjustment is allowed, it lacks simulation of "cooperative cooperation." In real engineering, power balance and resonance regulation involve multi-position collaboration, and existing equipment cannot simulate collaborative or adversarial engineering practices. It lacks social interaction, has a limited range of equipment scenarios, and cannot provide a comprehensive understanding. It is designed for a single principle and a single parameter range, making it difficult for students to abstract the underlying unchanging general laws from multiple different scenario examples and develop knowledge transfer abilities.

[0005] To address this, a multi-scenario, bivariate interactive teaching demonstration device is proposed. Summary of the Invention

[0006] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0007] Given that the existing technologies mentioned above involve single-scenario applications, fail to provide a comprehensive understanding, and are designed for a single principle and parameter range, students are unable to abstract the underlying general rules from multiple different scenario examples, making it difficult to develop knowledge transfer capabilities and thus solve the problems raised in the background technologies.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A multi-scenario, bivariate interactive teaching demonstration device includes: case; A power module is located on the left side of the top of the housing and supplies power to the various components of the device. The display screen is fixedly mounted on the top of the front side of the housing; An audio output module is disposed on the front of the housing and located to the right of the display screen; The first knob is located on the left side of the front of the housing and is mechanically connected to the first potentiometer. It is used to output a first analog voltage signal according to the rotation angle of the knob. The second knob is located on the right side of the front of the housing and is mechanically connected to the second potentiometer to output a second analog voltage signal. A microcontroller is disposed inside the housing. A first analog input terminal is connected to a first potentiometer, and a second analog input terminal is connected to a second potentiometer. The microcontroller has multiple mathematical models and corresponding variable mapping relationships for different teaching cases. Each teaching case corresponds to a set of bivariate mathematical models, variable mapping ranges, and target determination conditions. A case selection switch is located on the right side of the bottom front of the housing and is connected to the microcontroller to send a case selection command to the microcontroller. A mode selection switch is located on the right side of the bottom front of the housing and to the right of the case selection switch. It is connected to the microcontroller and is used to select cooperative mode or adversarial mode. The microcontroller receives a case selection instruction via the case selection switch, loads the corresponding teaching case, and uses it for: 1) Acquire two analog voltage signals in real time and convert them into two corresponding variable values ​​according to the mapping relationship of the currently loaded case; 2) Calculate and output real-time demonstration results based on the mathematical model of the currently loaded case; 3) Compare the real-time demonstration results with the target conditions preset in the current case to generate a compliance judgment signal.

[0009] Preferably, the display screen is connected to the output of the microcontroller to display the current case name, the value of the first variable, the value of the second variable, and the real-time demonstration result; the audio output module is connected to the microcontroller to issue feedback prompt sound effects when the target conditions are met.

[0010] Preferably, the collaborative mode involves two students working together to adjust the demonstration result to approach the target value, while the adversarial mode involves one student perturbing the result while the other compensates for it. The microcontroller is also used to record the adjustment time required to achieve the target condition each time and to generate adjustment path data.

[0011] Preferably, the microcontroller is an Arduino Mega2560; both the first and second potentiometers are 10kΩ linear potentiometers; the display screen is a TFT display screen, connected to the microcontroller via an SPI interface; and the audio output module is a passive buzzer.

[0012] Preferably, a multi-scenario bivariate interactive teaching demonstration control method based on the device according to any one of claims 1-4 includes the following steps: S1 Case Loading: Select the current teaching case using the case selection switch, and the microcontroller will load the corresponding mathematical model, variable mapping range, and target conditions. S2 variable acquisition: Real-time continuous acquisition of the first and second analog voltage signals; S3 Variable Conversion: Based on the mapping relationship of the current case, the collected voltage values ​​are converted into corresponding physical variable values; S4 Result Calculation: Substitute the values ​​of the two physical variables into the mathematical model of the current case to calculate the real-time demonstration results; S5 results show that the driver displays the current values ​​of the two variables and the demonstration results dynamically. S6 Target Assessment: Compare the demonstration results with preset target conditions. If the target is met, the audio output module will be triggered to emit a feedback sound effect. S7 Loop Iteration: Executes S2 through S6 in a loop, supporting case switching and multi-scenario comparison.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. Multi-scenario generalization capability: Based on the same set of hardware (two knobs + display screen + microcontroller + case selection switch + mode selection switch), dozens of teaching knowledge points in multiple disciplines such as electrical engineering, circuit principles, and automatic control can be covered by switching the pre-stored case library. There is no need to develop expensive experimental boxes for each principle. One machine can be used for multiple purposes and is low in cost.

[0014] 2. Embodied two-person interaction: The collaborative relationship between two coupled variables in the abstract theorem is mapped to real collaboration or competition between two students, which is closer to the real-world multi-position collaboration scenario in engineering, leading to a deeper understanding.

[0015] 3. Enhanced Cognitive Depth: Through switching between multiple cases with different parameter ranges and initial conditions, students can personally experience the cognitive process of "abstracting general rules from multiple special cases and then applying the general rules to new special cases" at the operational level, effectively making up for the gap in existing teaching instruments in the training of knowledge transfer ability.

[0016] 4. Real-time feedback and gamified incentives: Real-time numerical display, target indication and achievement sound effects transform the learning of abstract theorems into an "optimization" game, realizing "learning while moving and moving while learning". Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a preferred embodiment of a multi-scenario, dual-variable interactive teaching demonstration device provided by the present invention; Figure 2 This is an electrical principle block diagram of an embodiment of the present invention; Figure 3 This is the main program flowchart of the control method of the present invention; Figure 4 This is a schematic diagram of the display screen interface of Embodiment 1 (RLC resonance) of the present invention; Figure 5 This is a schematic diagram of the display screen interface of Embodiment 2 (microgrid frequency control) of the present invention.

[0018] In the diagram: 1. Housing; 2. Power module; 3. Display screen; 4. Audio output module; 5. First knob; 6. Second knob; 7. Microcontroller; 8. Case selection switch; 9. Mode selection switch. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more readily understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0022] Example 1: Overall Structure of the Device Please see Figure 1This is the first embodiment of the present invention, which provides an overall structure for a multi-scenario, bivariate interactive teaching demonstration device, comprising: Casing 1; Power module 2, located on the top left side of housing 1, provides 5V DC power to all components of the device; Display screen 3 is fixedly installed on the top of the front of housing 1 and uses a 2.4-inch TFT color display screen; Audio output module 4 is located on the front of housing 1 and to the right of display screen 3, and uses a passive buzzer. The first knob 5 is located on the left side of the front of the housing 1 and is mechanically connected coaxially with the 10kΩ linear first potentiometer. The second knob 6 is located on the right side of the front of the housing 1 and is mechanically connected coaxially with the 10kΩ linear second potentiometer. Microcontroller 7 is located inside housing 1 and uses an Arduino Mega2560 main control board; Case selection switch 8 is located on the right side of the bottom front of housing 1 and is a 4-position toggle switch; Mode selection switch 9 is located on the right side of the bottom front of housing 1 and to the right of case selection switch 8. It is a 2-position toggle switch.

[0023] Example 2: Teaching Demonstration of RLC Series Resonant Circuit This embodiment, based on the above-described device structure, implements an interactive teaching demonstration of an RLC series resonant circuit. The hardware connection is as follows: Two 10kΩ linear potentiometers are mounted on the left and right sides of the housing, respectively, with their ends connected to +5V and GND. The center taps are connected to the Arduino analog pins A0 and A1, respectively. The TFT display is connected to the Arduino via an SPI interface. A passive buzzer is connected to pin 7 as an audio module. The case selection switch is connected to pins 2-5, and the mode selection switch is connected to pin 6. All modules are powered by a 5V power supply module.

[0024] Case Setting Two special cases are preset: Case 1 (large-scale exploration): Inductor L is mapped to 50mH~300mH, and capacitor C is mapped to 5uF~50uF; Case 2 (fine adjustment): Inductor L is mapped to 5mH~50mH, and capacitor C is mapped to 1uF~10uF.

[0025] Mathematical model Linearly map the A0 reading to L, and A1 to C. When the input voltage is U and the resistance is R, the resonant frequency at resonance is... Substituting into the formula for the relative value of the series resonant output voltage:

[0026] V at resonance out maximum.

[0027] Interaction flow (collaboration mode) Two students each hold a knob (inductor L / capacitor C). The TFT display shows the L, C values ​​and V in real time. out The value is displayed visually as a bar chart. The two individuals collaborate to vary Vout between its maximum and minimum values, as V... out The buzzer sounds a failure warning when the timeout period expires. After completing Case 1, press the case switch to switch to Case 2 and repeat the operation.

[0028] Example 3: Microgrid Frequency Control Teaching Demonstration The hardware connection in this embodiment is exactly the same as in embodiment 2. The microgrid frequency control case is selected by switching the case.

[0029] Case Setting Preset Case 1 (Light Load Scenario): P load Mapping 0~50MW, P gen Mapping 0~50MW; Case 2 (Heavy load scenario): P load Mapping 0~100MW, P gen Mapping from 0 to 100MW. The mathematical model system's unit regulating power K = 20MW / 0.1Hz, with a real-time frequency of:

[0030] Interaction Flow (Adversarial Mode) Student A plays the role of "power plant operator" (Pgen), and student B plays the role of "electricity user" (Pload). A TFT display shows the power output and real-time frequency of both students. The rules of the game are: B can arbitrarily change the load to cause the frequency to deviate by 50Hz, and A must quickly adjust power generation to restore the frequency. A scores 1 point for every 10 seconds of stable frequency; B scores 1 point for causing the frequency to deviate by more than 0.5Hz for 3 seconds. Roles are switched after 60 seconds. This process vividly demonstrates the necessity of coordinated source-load regulation.

[0031] Extended Applications Based on the same hardware architecture (two knobs + display screen + microcontroller + case selection switch), by expanding the case library stored in the microcontroller, this device can be adapted to the following teaching scenarios: ; It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0032] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0033] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A multi-scenario, dual-variable interactive teaching demonstration device, characterized in that: include: Shell (1); Power module (2), which is located on the left side of the top of the housing (1) and supplies power to the various components of the device; Display screen (3), which is fixedly installed on the top of the front of the housing (1); An audio output module (4) is disposed on the front of the housing (1) and located on the right side of the display screen (3); The first knob (5) is located on the left side of the front of the housing (1) and is mechanically connected to the first potentiometer. The second knob (6) is located on the right side of the front of the housing (1) and is mechanically connected to the second potentiometer to output a second analog voltage signal; Microcontroller (7), the microcontroller (7) is disposed inside the housing (1), the first analog input terminal is connected to the first potentiometer, and the second analog input terminal is connected to the second potentiometer; Case selection switch (8), the case selection switch (8) is located on the right side of the bottom front of the housing (1) and is connected to the microcontroller (7); Mode selection switch (9) is located on the right side of the bottom front of the housing (1) and to the right of the case selection switch (8), and is connected to the microcontroller (7). The microcontroller (7) receives a case selection instruction via the case selection switch (8), loads the corresponding teaching case, and uses it for: 1) Acquire two analog voltage signals in real time and convert them into two corresponding variable values ​​according to the mapping relationship of the currently loaded case; 2) Calculate and output real-time demonstration results based on the mathematical model of the currently loaded case; 3) Compare the real-time demonstration results with the target conditions preset in the current case to generate a compliance judgment signal.

2. The multi-scenario, dual-variable interactive teaching demonstration device according to claim 1, characterized in that: The display screen (3) is connected to the output of the microcontroller (7) and displays the current case name, the value of the first variable, the value of the second variable, and the real-time demonstration result in real time; the audio output module (4) is connected to the microcontroller (7) and is used to issue feedback prompt sound effects when the target conditions are met.

3. The multi-scenario, bivariate interactive teaching demonstration device according to claim 1, characterized in that: The collaborative mode is for two students to jointly adjust the demonstration result to approach the target value, and the adversarial mode is for one party to disturb and the other party to compensate; the microcontroller (7) is also used to record the adjustment time required to achieve the target condition each time and generate adjustment path data.

4. The multi-scenario, bivariate interactive teaching demonstration device according to claim 1, characterized in that: The microcontroller (7) is an Arduino Mega2560; the first potentiometer and the second potentiometer are both 10kΩ linear potentiometers; the display screen (3) is a TFT display screen, which is connected to the microcontroller (7) through the SPI interface; the audio output module (4) is a passive buzzer.

5. A multi-scenario, bivariate interactive teaching demonstration control method based on the device described in any one of claims 1-4, characterized in that, Includes the following steps: S1 Case Loading: Select the current teaching case through the case selection switch (8), and the microcontroller (7) loads the corresponding mathematical model, variable mapping range and target conditions; S2 variable acquisition: Real-time continuous acquisition of the first and second analog voltage signals; S3 Variable Conversion: Based on the mapping relationship of the current case, the collected voltage values ​​are converted into corresponding physical variable values; S4 Result Calculation: Substitute the values ​​of the two physical variables into the mathematical model of the current case to calculate the real-time demonstration results; S5 results show that the drive display screen (3) dynamically refreshes and displays the current values ​​of the two variables and the demonstration results; S6 Target Judgment: Compare the demonstration results with the preset target conditions. If the target is met, the audio output module (4) will be triggered to emit a feedback sound effect. S7 Loop Iteration: Executes S2 through S6 in a loop, supporting case switching and multi-scenario comparison.

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