Demonstration device for single-chip microcomputer teaching experiment

Abstract

This invention belongs to the field of teaching device technology and discloses a demonstration device for microcontroller teaching experiments. It includes a device base, with an integrated circuit experiment panel for circuit experiments fixedly connected to the upper end of the base. It also includes a side-grooved transverse slide fixedly connected to the front end of the device base, and a sliding brush assembly slidably connected outside the side-grooved transverse slide. The sliding brush assembly includes an L-shaped metal bracket. This solution, through the structural coordination of the sliding brush assembly, the side-grooved transverse slide, the terminal block, the grounding lead, the brush body conductive ring, the built-in copper wire bristles, the grounding detection button, and the insulating sleeve, enables the built-in copper wire bristles and the grounding lead to form a complete electrostatic discharge circuit. The grounding detection button allows for quick determination of the grounding circuit's integrity, and the insulating sleeve effectively blocks leakage paths, achieving rapid electrostatic discharge and leakage protection during the brushing process.

Description

Technical Field

[0001] This invention belongs to the field of teaching device technology, specifically a demonstration device for microcontroller teaching experiments. Background Technology

[0002] Existing microcontroller teaching and experimental demonstration devices are mostly based on experimental boxes or training platforms. They typically consist of a base, an integrated circuit experimental panel, and various functional modules. The integrated circuit experimental panel integrates basic and extended circuit modules such as microcontroller core chips, LED display circuits, button circuits, digital tubes, LCD liquid crystals, motor drives, and sensor interfaces. It is also equipped with a power supply module, a program download interface, and a debugging interface, allowing students to complete basic teaching experiments such as microcontroller instruction learning, interface expansion, data acquisition, and control logic programming.

[0003] For example, a microcontroller teaching experiment demonstration device with publication number CN111161605A includes a horizontally positioned movable mounting plate. Each of the four corners of the movable mounting plate has a swinging arc-shaped column connected to a reset pivot. The lower end of each swinging arc-shaped column has a steering wheel frame connected to a steering pivot. The lower end of each steering wheel frame has a drive guide wheel. A lifting mounting plate is horizontally positioned above the movable mounting plate. A lifting threaded cylinder is vertically positioned downwards at the lower center of the lifting mounting plate. Through interchangeable guide installation, the microcontroller can be installed quickly and accurately. Combined with the lifting and swinging structures, and the rotating display structure, the device offers diverse display angles to meet different teaching demonstration needs. Furthermore, the built-in battery allows the device to conduct independent experimental demonstrations. The addition of a steering and shock-absorbing movement expands the device's application range.

[0004] While the above solutions can meet the needs of different teaching demonstrations, dust, solder debris, and other impurities accumulate on the surface of the integrated circuit experimental panel during the use of the microcontroller teaching experimental demonstration device. If these impurities are not cleaned in time, they will affect the contact stability of electrical components, thereby affecting the experimental demonstration effect. Therefore, a special cleaning tool is needed to clean the integrated circuit experimental panel. Currently, most cleaning tools used for microcontroller teaching experimental devices are ordinary brushes with simple structures that can only achieve basic brushing functions. They do not have a special static electricity conduction structure. During the brushing process, static electricity is generated by the friction between the brush bristles and the precision electrical components and circuit boards on the integrated circuit experimental panel. This static electricity cannot be discharged in time and easily accumulates on the surface of the components, which can then damage precision components such as microcontroller chips and sensors, leading to damage to the experimental device, increasing the maintenance cost of teaching equipment, and affecting the normal conduct of teaching experiments. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides a demonstration device for microcontroller teaching experiments.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a demonstration device for microcontroller teaching experiments, including a device base, an integrated circuit experiment panel for conducting circuit experiments fixedly connected to the upper end of the device base, and further including: a side-grooved transverse slide groove fixedly connected to the front end of the device base, and a translational sweeping brush assembly slidably connected to the outside of the side-grooved transverse slide groove. The translational sweeping brush assembly includes an L-shaped metal bracket. A handle is fixedly connected to the vertical end of the L-shaped metal bracket away from the equipment base. Multiple equidistant brush body conductive rings are fixedly connected to the vertical section of the L-shaped metal bracket. An insulating sleeve is fixedly connected to the end of the brush body conductive rings near the integrated circuit experimental panel. Several built-in copper wire bristles for sweeping and conducting static electricity are fixedly connected inside the insulating sleeve. A grounding detection button is fixedly connected to the end of the handle away from the built-in copper wire bristles. A terminal block is fixedly connected to the side of the side-grooved transverse slide away from the translational sweeping brush assembly. A spiral telescopic wire for telescopic conduction is fixedly connected between the L-shaped metal bracket and the terminal block. A grounding lead is fixedly connected to the lower end of the terminal block.

[0007] Preferably, a central rotating shaft is slidably connected within the side-slotted transverse slide groove, and external bogies located on both sides of the central rotating shaft are symmetrically rotatably connected, with the vertical ends of the two external bogies and the L-shaped metal bracket fixedly connected to each other.

[0008] Preferably, the upper and lower inner walls of the side-grooved transverse sliding groove are symmetrically provided with guide grooves, and the upper and lower ends of the central rotating shaft are symmetrically fixedly connected with guide protrusions, and the guide grooves and guide protrusions are slidably engaged.

[0009] Preferably, the horizontal section of the side-grooved transverse slide is symmetrically fixedly connected to the upper and lower ends of the two sides, and a plurality of flexible curtains are fixedly connected to the ends of two vertically corresponding fixed strips that are close to each other, and the plurality of flexible curtains are horizontally equidistant.

[0010] Preferably, the device base is fixedly connected to a side-mounted storage housing at the end away from the terminal block, and a sliding protective door is slidably connected to the opening side of the side-mounted storage housing.

[0011] Preferably, the built-in copper wire bristles are a blend of conductive nylon filaments and copper fibers, and the insulating sleeve is made of silicone rubber.

[0012] Preferably, the conductive ring of the brush body is made of brass, and the end of the grounding lead is provided with a U-shaped terminal for connecting to the laboratory grounding bus.

[0013] Preferably, the spiral telescopic conductor is a multi-strand copper core flexible wire, which is covered with a polyurethane elastic insulation layer.

[0014] Preferably, the length of the spiral telescopic wire in its stretched state is greater than the maximum straight-line distance between the L-shaped metal bracket and the terminal block.

[0015] Preferably, the grounding detection button is a self-resetting tactile switch with an LED indicator connected in series inside. When pressed, the LED indicator lights up to indicate that the grounding circuit is connected.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the structural coordination of a translational brush assembly, a side-grooved transverse slide, a terminal block, a grounding lead, a brush body conductive ring, built-in copper wire bristles, a grounding detection button, and an insulating sleeve, enables the built-in copper wire bristles and the grounding lead to form a complete electrostatic discharge circuit. The grounding detection button can quickly determine whether the grounding circuit is intact, and the insulating sleeve effectively blocks leakage paths, achieving rapid electrostatic discharge and leakage protection during the brushing process. This invention utilizes a structure consisting of an external bogie, a central rotating shaft, a guide protrusion, a guide groove, a fixing strip, and a flexible baffle. The dual coordination of the external bogie and the guide groove, as well as the guide protrusion and the guide groove, constrains the movement of the translational brush assembly, ensuring a smooth and non-deviation-prone brushing process. The flexible baffle prevents dust and debris from scattering and avoids dust adhering to the spiral telescopic wires, which could affect the circuit conductivity. This achieves comprehensive and stable brushing of the integrated circuit experimental panel surface, while also protecting the internal circuitry of the device from damage. This invention utilizes a structure consisting of a side-slotted transverse slide, an external bogie, a side-mounted storage housing, and a push-pull protective door. After sweeping, the translational sweeping brush assembly can slide along the side-slotted transverse slide to a designated area and rotate back into position. The push-pull protective door closes the side-mounted storage housing to form a closed storage space, enabling convenient storage of the translational sweeping brush assembly. This prevents the translational sweeping brush assembly from being damaged by collisions or scratches when idle, thus extending the service life of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the device base of the present invention; Figure 2 This is a schematic diagram of the translational sweeping brush assembly structure of the present invention; Figure 3 This is a schematic diagram of the combined state structure of the sweep-shift group and the integrated circuit experimental panel of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure with partial truncation at point A in the middle; Figure 5 This is a schematic diagram of a partially truncated transverse sliding groove structure of the present invention; Figure 6This is a schematic diagram of the storage state structure of the translational sweeping brush component of the present invention.

[0018] In the diagram: 1. Equipment base; 2. Integrated circuit experimental panel; 3. Side-grooved transverse slide; 4. Translational brush assembly; 400. L-shaped metal bracket; 401. Handle; 402. Brush body conductive ring; 403. Insulating sleeve; 404. Built-in copper wire bristles; 405. Grounding detection button; 406. Terminal block; 407. Spiral telescopic wire; 408. Grounding lead; 5. Central rotating shaft; 6. External bogie; 7. Guide groove; 8. Guide protrusion; 9. Fixing strip; 10. Flexible curtain; 11. Side-mounted storage housing; 12. Sliding protective door. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 6 As shown, this invention provides a demonstration device for microcontroller teaching experiments, including a device base 1. An integrated circuit experiment panel 2 for conducting circuit experiments is fixedly connected to the upper end of the device base 1. The device also includes a side-grooved transverse slide 3 fixedly connected to the front end of the device base 1. A translational brush assembly 4 is slidably connected to the side-grooved transverse slide 3. The translational brush assembly 4 includes an L-shaped metal bracket 400. A handle 401 is fixedly connected to the vertical end of the L-shaped metal bracket 400 away from the device base 1. Multiple equidistant brush body conductive rings 402 are fixedly connected to the vertical section of the L-shaped metal bracket 400. An insulating sleeve 403 is fixedly connected to one end of the integrated circuit experimental panel 2. Several built-in copper wire bristles 404 for sweeping and conducting static electricity are fixedly connected inside the insulating sleeve 403. A grounding detection button 405 is fixedly connected to one end of the handle 401 away from the built-in copper wire bristles 404. A terminal block 406 is fixedly connected to one side of the side slotted transverse slide 3 away from the translational sweeping brush assembly 4. A spiral telescopic wire 407 for telescopic conduction is fixedly connected between the L-shaped metal bracket 400 and the terminal block 406. A grounding lead 408 is fixedly connected to the lower end of the terminal block 406.

[0021] The above-mentioned scheme adopts the following: The built-in copper wire brush bristles 404 are made of conductive fiber bristles formed by drawing nylon resin as the main body and uniformly mixing conductive fillers such as conductive carbon black. This material has excellent elasticity, toughness and wear resistance. During the brushing process, no additional static charge will be generated due to friction. The bristles are flexible and will not damage the various electronic components on the surface of the integrated circuit experimental panel 2. It should be noted that the built-in copper wire brush bristles 404 used in this implementation scheme are not simply coated with a conductive layer on the fiber surface, but a three-dimensional conductive network is constructed inside the bristles through blending modification technology. This structure gives the bristles long-term stable conductivity and will not cause the conductivity to decay due to long-term use or changes in environmental temperature and humidity.

[0022] like Figures 2 to 6 As shown, a central rotating shaft 5 is slidably connected inside the side-opening transverse slide 3. The two sides of the central rotating shaft 5 are symmetrically rotatably connected to external bogies 6 located on both sides of the side-opening transverse slide 3. The vertical ends of the two external bogies 6 and the L-shaped metal bracket 400 are fixedly connected to each other. The upper and lower inner walls of the side-opening transverse slide 3 are symmetrically provided with guide grooves 7. The upper and lower ends of the central rotating shaft 5 are symmetrically fixedly connected with guide protrusions 8. The guide grooves 7 and guide protrusions 8 are slidably engaged. The upper and lower ends of the horizontal section of the side-opening transverse slide 3 are symmetrically fixedly connected with fixing strips 9. The ends of the two vertically corresponding fixing strips 9 that are close to each other are fixedly connected with multiple flexible curtains 10. The multiple flexible curtains 10 are horizontally equidistantly distributed.

[0023] The above scheme is adopted: the central rotating shaft 5 serves as the intermediate connecting part between the translational brush assembly 4 and the side-grooved transverse slide 3. One end of the central rotating shaft 5 is housed in the internal cavity of the side-grooved transverse slide 3. The guide protrusions 8, which are symmetrically fixed at the upper and lower ends, are respectively embedded in the guide grooves 7 opened on the upper and lower inner walls of the side-grooved transverse slide 3. An appropriate fit gap is maintained between the guide protrusions 8 and the guide grooves 7, which not only ensures that the central rotating shaft 5 can slide smoothly along the slide direction, but also restricts the degree of freedom of the central rotating shaft 5 in the direction perpendicular to the sliding direction by using the geometric constraint relationship between the guide protrusions 8 and the guide grooves 7. This ensures that the translational brush assembly 4 always maintains a straight running posture during horizontal movement and does not produce a sway displacement perpendicular to the direction of movement. A gap is reserved between adjacent flexible curtains 10 to allow the vertical section of the L-shaped metal bracket 400 of the translational brush assembly 4 to pass through.

[0024] like Figures 2 to 6As shown, the end of the equipment base 1 away from the terminal block 406 is fixedly connected to a side-mounted storage housing 11. A sliding protective door 12 is slidably connected to the opening side of the side-mounted storage housing 11. The built-in copper wire brush bristles 404 are a blend of conductive nylon bristles and copper fibers. The insulating sleeve 403 is made of silicone rubber. The brush body conductive ring 402 is made of brass. The end of the grounding lead 408 is provided with a U-shaped terminal for connecting to the laboratory grounding bus. The spiral telescopic wire 407 is a multi-strand copper core flexible wire, which is covered with a polyurethane elastic insulation layer. The length of the spiral telescopic wire 407 in the stretched state is greater than the maximum straight distance between the L-shaped metal bracket 400 and the terminal block 406. The grounding detection button 405 is a self-resetting tactile switch with an LED indicator connected in series inside. When pressed, the LED indicator lights up to indicate that the grounding circuit is connected.

[0025] The above solution involves a side-mounted storage housing 11 fixedly installed on the end of the equipment base 1 away from the terminal block 406. Inside, a storage cavity is formed that matches the outline of the translational brush assembly 4. The side of the side-mounted storage housing 11 facing the outside of the equipment has an open structure. A sliding protective door 12 is slidably installed at this opening via a linear guide rail or a sliding groove structure. After the translational brush assembly 4 completes the full-surface brushing of the integrated circuit experimental panel 2, the operator pushes the translational brush assembly 4 along the side-opening transverse sliding groove 3 to a preset storage position near one end of the side-mounted storage housing 11. The translational brush assembly 4 is then rotated 180 degrees around the central axis 5, causing the built-in copper wire bristles 404 to turn inwards. The sliding protective door 12 is then slid to close the opening of the side-mounted storage housing 11, completely storing the translational brush assembly 4 inside the closed cavity. This significantly reduces the risk of bristle deformation, conductive layer wear, or overall structural damage to the translational brush assembly 4 during idle storage, extending the service life of the device.

[0026] Working principle and usage process of this invention: First, securely connect the grounding lead 408 at the lower end of the terminal block 406 to the external grounding facility. Move the L-shaped metal bracket 400 of the brush assembly 4 horizontally and connect it to the terminal block 406 using the spiral telescopic wire 407. The operator presses the grounding test button 405 on the surface of the handle 401. If the grounding circuit is intact after pressing, the indicator light will light up. After releasing, the indicator light will turn off, but the grounding circuit will always remain conductive, so that the brush body conductive ring 402, the built-in copper wire bristles 404 and the grounding lead 408 form a continuous and complete electrostatic discharge conduction circuit. The insulating sleeve 403 stably wraps the connection part where the brush body conductive ring 402 and the built-in copper wire bristles 404 are connected, isolating the conductive structure from the other external structures, blocking the current leakage path, and avoiding leakage. The overall preparation work for the anti-static wiring before the use of the device is completed. The operator then applies a steady horizontal thrust by gripping handle 401, causing the translational sweeping brush assembly 4 to slide horizontally along the trajectory set by the side-grooved transverse slide groove 3. Simultaneously, the L-shaped metal bracket 400 inside the translational sweeping brush assembly 4 drives the external bogies 6 mounted on both sides to move in the same direction. Then, with the help of the rotational engagement structure between the external bogies 6 and the guide grooves 7, the guide protrusions 8 fixed at both ends of the central rotating shaft 5 slide in a directional direction along the guide grooves 7 opened on the inner wall of the side-grooved transverse slide groove 3. The two sets of engagement structures work together to constrain the overall movement of the translational sweeping brush assembly 4, maintaining stable operation during movement and preventing positional deviation during travel. In synchronous mode, the built-in... The copper wire bristles 404 move synchronously with the translational brush assembly 4 and move at a uniform speed to fit the surface of the integrated circuit experimental panel 2. They sequentially complete the all-round brushing and cleaning of various electrical components on the surface of the integrated circuit experimental panel 2. During the brushing process, the static electricity generated by the friction between the components and the bristles will be conducted in an orderly manner along the built-in copper wire bristles 404. The static electricity flows sequentially through the brush body conductive ring 402, the L-shaped metal bracket 400, and the spiral telescopic wire 407 before being transmitted to the terminal block 406. Finally, it is uniformly transported to the grounding position through the grounding lead 408 to complete the static electricity release, thereby preventing the accumulation of static electricity from damaging the electrical components on the surface of the integrated circuit experimental panel 2. The fixing strips 9 are fixedly installed on the upper and lower positions on both sides of the horizontal section of the side-grooved transverse slide 3 to complete the fixed installation of the flexible curtain 10. Multiple flexible curtains 10 arranged horizontally at equal intervals form a lateral enclosure structure during the sweeping operation, reducing the dust and debris from drifting to the inside of the side-grooved transverse slide 3 and preventing dust and debris from adhering and accumulating on the surface of the spiral telescopic wire 407. After the entire cleaning of the integrated circuit experimental panel 2 is completed, the operator continues to push the handle 401, causing the translation brush assembly 4 to slide along the side slot transverse slide 3 until the translation brush assembly 4 moves to the designated stopping area away from the terminal block 406. Then, with the help of the rotational engagement structure between the external bogie 6 and the guide groove 7, the translation brush assembly 4 is rotated 180 degrees to complete the neat return of the translation brush assembly 4. The side storage housing 11 is fixedly installed on the side of the equipment base 1. The operator smoothly slides the push-pull protective door 12 along the opening direction of the side storage housing 11 to complete the closing operation of the opening position of the side storage housing 11. The returned translation brush assembly 4 is stored in the closed space to prevent external objects from directly contacting the translation brush assembly 4, reducing the probability of physical damage such as collisions and scratches during the idle storage of the device.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A demonstration device for microcontroller teaching experiments, comprising a device base (1), wherein an integrated circuit experiment panel (2) for conducting circuit experiments is fixedly connected to the upper end of the device base (1), characterized in that: Also includes: A side-grooved transverse slide (3) is fixedly connected to the front end of the equipment base (1), and a translational sweeping brush assembly (4) is slidably connected to the outside of the side-grooved transverse slide (3). The translational brush assembly (4) includes an L-shaped metal bracket (400). A handle (401) is fixedly connected to the vertical end of the L-shaped metal bracket (400) away from the equipment base (1). A plurality of equidistant brush body conductive rings (402) are fixedly connected to the vertical section of the L-shaped metal bracket (400). An insulating sleeve (403) is fixedly connected to the end of the brush body conductive ring (402) near the integrated circuit experimental panel (2). Several brush body conductive rings (402) for brushing and conducting static electricity are fixedly connected inside the insulating sleeve (403). The handle (401) has a built-in copper wire brush (404) for electricity. A grounding detection button (405) is fixedly connected to the end of the handle (401) away from the built-in copper wire brush (404). A terminal block (406) is fixedly connected to the side of the side slotted transverse slide (3) away from the translation brush assembly (4). A spiral telescopic wire (407) for telescopic conduction is fixedly connected between the L-shaped metal bracket (400) and the terminal block (406). A grounding lead (408) is fixedly connected to the lower end of the terminal block (406).

2. The demonstration device for microcontroller teaching experiments according to claim 1, characterized in that: A central rotating shaft (5) is slidably connected in the side slotted transverse slide (3). The two sides of the central rotating shaft (5) are symmetrically rotatably connected to the outer axle bogies (6) located on both sides of the side slotted transverse slide (3). The vertical ends of the two outer axle bogies (6) and the L-shaped metal bracket (400) are fixedly connected to each other.

3. The demonstration device for microcontroller teaching experiments according to claim 2, characterized in that: The upper and lower inner walls of the side-grooved transverse sliding groove (3) are symmetrically provided with guide grooves (7), and the upper and lower ends of the central rotating shaft (5) are symmetrically fixedly connected with guide protrusions (8). The guide grooves (7) and guide protrusions (8) slide together.

4. The demonstration device for microcontroller teaching experiments according to claim 1, characterized in that: The horizontal section of the side-grooved transverse slide (3) is symmetrically fixed at both ends of the upper and lower ends of the horizontal section, and a plurality of flexible curtains (10) are fixedly connected at the ends of the two vertically corresponding fixed strips (9) that are close to each other. The plurality of flexible curtains (10) are distributed horizontally at equal intervals.

5. The demonstration device for microcontroller teaching experiments according to claim 1, characterized in that: The device base (1) is fixedly connected to a side-mounted storage housing (11) at one end away from the terminal block (406), and a sliding protective door (12) is slidably connected to the opening side of the side-mounted storage housing (11).

6. The demonstration device for microcontroller teaching experiments according to claim 1, characterized in that: The built-in copper wire bristles (404) are a blend of conductive nylon bristles and copper fibers, and the insulating sleeve (403) is made of silicone rubber.

7. The demonstration device for microcontroller teaching experiments according to claim 1, characterized in that: The brush body conductive ring (402) is made of brass, and the end of the grounding lead (408) is provided with a U-shaped terminal for connecting to the laboratory grounding bus.

8. The demonstration device for microcontroller teaching experiments according to claim 1, characterized in that: The spiral telescopic conductor (407) is a multi-strand copper core flexible wire, which is covered with a polyurethane elastic insulation layer.

9. The demonstration device for microcontroller teaching experiments according to claim 1, characterized in that: The length of the spiral telescopic conductor (407) in the stretched state is greater than the maximum straight distance between the L-shaped metal bracket (400) and the terminal block (406).

10. The demonstration device for microcontroller teaching experiments according to claim 1, characterized in that: The grounding detection button (405) is a self-resetting tactile switch with an LED indicator connected in series inside. When pressed, the LED indicator lights up to indicate that the grounding circuit is connected.

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