Intelligent teaching trolley with good expansibility

Abstract

The utility model discloses a good expansibility's teaching is with intelligent dolly, including dolly body, control panel and running control module, is equipped with chip socket, minimum system board, output terminal and terminal configuration module on the control panel, and terminal configuration module includes first switch module, second switch module, third switch module and switch controller, and the input of first switch module is connected with minimum system's VCC end, and the input of second switch module is connected with minimum system's GND end, and the input of third switch module is connected with minimum system board's IO end, and the control end of first switch module and second switch module is connected with switch controller, and the output of first switch module, second switch module, third switch module is connected with output terminal respectively, and the utility model discloses the port attribute of output terminal configuration module configuration output terminal is combined with the detachable of minimum system board in chip socket, has improved the expansibility of intelligent dolly control system, has reduced the teaching cost.

Description

Technical Field

[0001] This utility model relates to the field of microcontroller application technology teaching, specifically to a smart teaching vehicle with good scalability. Background Technology

[0002] In recent years, with the rapid development of artificial intelligence, the traditional curriculum system for electronic technology majors has been unable to meet the changing needs of current technological development. In order to adapt to the development of technology, major universities in China have begun to explore the construction of a dual-track curriculum system of "traditional + AI".

[0003] Intelligent vehicles serve as an important practical teaching tool for students to learn microcontroller and sensor technologies. By mounting different sensors and modules on the vehicle itself, such as line-following, ultrasonic sensors, radar, and robotic arms, students can learn different functions in a vivid and engaging way. However, the control systems of existing teaching intelligent vehicles often use highly integrated development boards. These boards integrate microcontroller chips and circuit modules for driving the vehicle and various peripheral sensors. A single development board can only be used for one project, resulting in poor expandability. In actual teaching objectives, students need to master the principles and applications of different types of microcontrollers. When teachers want to use intelligent vehicles as a platform to teach different types of microcontrollers, such as 52 microcontrollers, STM32 microcontrollers, and SOC microcontrollers, they need to replace the microcontroller development board with one that meets the teaching objectives and redesign the connection circuits of the peripheral sensor modules, resulting in high replacement costs.

[0004] In view of this, the present invention proposes a highly expandable intelligent teaching vehicle to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this utility model is to provide a teaching intelligent car with good expandability, and to solve the technical problems of poor expandability and high replacement cost of the control system of existing teaching intelligent cars.

[0006] To achieve the above objectives, this utility model provides a highly expandable intelligent teaching vehicle, comprising:

[0007] The vehicle body has four symmetrically arranged driving wheels.

[0008] The control board includes a chip socket, a minimum system board, output terminals, and a terminal configuration module. The terminal configuration module includes a first switch module, a second switch module, a third switch module, and a controller. The control terminals of the first and second switch modules are respectively connected to the switch controller. The input terminal of the first switch module is connected to the VCC terminal of the minimum system, and its output terminal is connected to the output terminal. The input terminal of the second switch module is connected to the GND terminal of the minimum system. The input terminal of the third switch module is connected to the IO terminal of the minimum system board. The output terminals of the second and third switch modules are respectively connected to the output terminal. The switch controller is connected to the minimum system board.

[0009] A driving control module is connected to the control board and the driving wheels.

[0010] Preferably, in the above technical solution, the output terminal is a plurality of LPT pins, and the number of switching circuits of the first switch module, the second switch module, and the third switch module corresponds one-to-one with the plurality of LPT pins.

[0011] Preferably, in the above technical solution, the first switch module and the second switch module are both multiplexers, and the third switch module is a DIP switch.

[0012] Preferably, in the above technical solution, the minimum system board is a microcontroller minimum system board based on the 8051 core, a microcontroller minimum system board based on the ARM-M core, or a microcontroller minimum system board based on the ARM-A core.

[0013] Preferably, in the above technical solution, the control board is provided with a USB module, a power switching circuit and a memory, and the USB module, the power switching circuit and the memory are respectively connected to the minimum system board.

[0014] Preferably, in the above technical solution, the vehicle body is further provided with a USB expansion board, a LiDAR module, a camera module, and a voice recognition module. The LiDAR module, camera module, voice recognition module, and driving control module are respectively connected to the input end of the USB expansion board, and the output end of the USB expansion board is connected to the USB module.

[0015] Preferably, in the above technical solution, the vehicle body is provided with a wireless communication module, and the wireless communication module is connected to the minimum system board.

[0016] Compared with existing technologies, this utility model has the following beneficial effects:

[0017] 1. This utility model features a separable design for the minimum system board and control board. The minimum system board contains only the minimum system circuit supporting microcontroller operation. The input terminal of the first switch module of the terminal configuration module is connected to the VCC terminal of the minimum system, and the output terminal of the first switch module is connected to the output terminal. The input terminal of the second switch module is connected to the GND terminal of the minimum system, and the input terminal of the third switch module is connected to the IO terminal of the minimum system board. The output terminals of the second and third switch modules are connected to the output terminal, respectively. The switch controller controls the opening and closing of the switching circuits of the first and second switch modules, and coordinates with the operation of the switching circuit of the third switch module to realize the connection switching between the output terminal and the VCC, GND, and IO terminals of the minimum system. This achieves the connection attribute of the output terminal without changing the hardware connection pins of the peripheral sensors on the control board. The replacement minimum system board is compatible with the existing control board and peripheral sensor hardware connections, without the need to replace the entire control board. This improves the expandability of the intelligent vehicle's control system and reduces replacement costs.

[0018] 2. This utility model uses a USB expansion board to collect data from the radar detection module, camera module, voice recognition module, and driving control module, and then sends it to the USB module on the control board for reception. The USB module is connected to the minimum system board, enabling the use of a single serial port on the microcontroller on the minimum system board to control multiple modules, thus saving the serial port and I / O port resources of the minimum system board.

[0019] 3. The minimum system board of this utility model is a microcontroller minimum system board based on the 8051 core, a microcontroller minimum system board based on the ARM-M core, or a microcontroller minimum system board based on the ARM-A core. By replacing the minimum system board with a microcontroller of different cores, learning of various microcontroller resources is realized, thus expanding the diversity of teaching. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the control board of this utility model.

[0022] Figure 3 This is a schematic diagram of the circuit principle structure of this utility model.

[0023] Figure 4 This is a schematic diagram of the circuit principle structure of the terminal configuration module of this utility model.

[0024] In the diagram: 1—Car body, 2—Wheel, 3—Driving control module, 4—USB expansion board, 5—Control board, 6—Wireless communication module, 7—LiDAR module, 8—Camera module, 9—Voice recognition module, 10—Terminal configuration module, 11—Output terminal, 101—First switch module, 102—Second switch module, 103—Third switch module, 104—Switch controller, 501—Minimum system board, 502—Chip socket, 503—Power switching circuit, 504—Memory, 505—USB module. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0026] refer to Figures 1 to 4 A highly expandable intelligent teaching vehicle includes a vehicle body 1, driving wheels 2, driving control module 3, USB expansion board 4, control board 5, wireless communication module 6, lidar module 7, camera module 8, and voice recognition module 9. The control board 5 is equipped with a minimum system board 501, chip socket 502, power switching circuit 503, memory 504, USB module 505, terminal configuration module 10, and output terminal 11.

[0027] The minimum system board 501 is detachably mounted on the chip socket 502. The power switching circuit 503 and the memory 504 are connected to the minimum system board 501. The minimum system board 501 can be a microcontroller minimum system board based on an 8051 core, an ARM-M core, or an ARM-A core. All three types of minimum system boards have the same number of pins. The power switching circuit 503 selects between 5V and 3.3V operating voltages for the minimum system board 501. The memory 504 expands the memory of the minimum system board 501. In this example, the minimum system board is a hardware platform that integrates basic components such as a processor, clock source, input / output interfaces, and power management. The microcontroller model selected for the minimum system board based on the 8051 core can be STC8A8K64D4, the microcontroller model selected for the minimum system board based on the ARM-M core can be STM32F401CCU6, and the microcontroller model selected for the minimum system board based on the ARM-A core can be BCM2711. The detachable design of the minimum system board 501 makes it convenient for teachers to change teaching topics. Then, by editing the program, they can call the control board 5 and the peripheral resources connected to the control board 5, realizing the learning of various microcontroller resources and expanding the diversity of teaching.

[0028] The I / O terminals of the minimum system board 501 are connected to the output terminals 11 via the terminal configuration module 10. The terminal configuration module 10 includes a first switch module 101, a second switch module 102, a third switch module 103, and a switch controller 104. The input terminal of the first switch module 101 is connected to the power supply terminal VCC of the minimum system board 501, and its output terminal is connected to the output terminal 11. The input terminal of the second switch module 102 is connected to the ground terminal GND of the minimum system board 501, and its output terminal is connected to the output terminal 11. The input terminal of the third switch module 103 is connected to the I / O terminals of the minimum system board 501, and its output terminal is connected to the output terminal 11. The control terminals of the first switch module 101 and the second switch module 102 are respectively connected to the switch controller 104, which is connected to the minimum system board 501. The first switch module 101 and the second switch module 102 are multiplexers, the third switch module 103 is a DIP switch, and the output terminal 11 has multiple LPT pins. The number of switching circuits in switch module 101, second switch module 102, and third switch module 103 corresponds to the number of LPT pins. The minimum system board 501 drives the switch controller 104, which controls the opening and closing of the switching circuits in the first switch module 101 and the second switch module 102, thereby connecting each LPT pin of the output terminal 11 to the power supply terminal VCC or the ground terminal GND of the minimum system board 501. Combined with the operation of the DIP switch, the attributes of each LPT pin of the output terminal 11 are ultimately determined, i.e., each LPT pin is connected to the power supply terminal VCC, the ground terminal GND, or the IO terminal of the minimum system board 501. This achieves compatibility with the existing control board 5 and its peripheral sensor hardware connections without changing the hardware connection pins of the control board 5, eliminating the need to replace the entire control board 5. This improves the expandability of the intelligent vehicle's control system and reduces the cost of replacing the control board 5. Figure 4 As shown, in this embodiment, the first switch module 101 and the second switch module 102 can be selected as 16-channel analog multiplexers of model ADG706, the switch controller 104 can be selected as a displacement buffer of model 74hc595, and the third switch module 103 is selected as a 16-channel DIP switch. The S1-S16 channels of the first switch module 101 and the second switch module 102 are all connected to the output terminal 11. How to use 74hc595 to control the switching circuit of the two ADG706 is existing technology, and will not be described in detail in this embodiment.

[0029] The driving control module 3, the lidar module 7, the camera module 8, and the voice recognition module 9 are connected to the input terminals of the USB expansion board 4, respectively. The output terminals of the USB expansion board 4 are connected to the USB module 505, and the USB port 505 is connected to the minimum system board 501. The driving control module 3 is connected to the driving wheel 2. In this embodiment, the USB expansion board 4 is a 1-to-4 USB expansion module, the lidar module 7 is an RPLIDAR A1 lidar, the camera module 8 is a D1010-IR-210 Mymy binocular depth camera, the voice recognition module 9 is an AiPi-PalChatV1 intelligent voice recognition sensor, and the driving wheel 2 is an omnidirectional wheel. The driving control module 3 consists of a microcontroller, a motor drive circuit, and an encoder motor, which is an existing intelligent vehicle control module, and will not be described in detail here. The driving control module 3, LiDAR module 7, camera module 8, and voice recognition module 9 are all connected to the USB port of the USB expansion board 4 via USB cables. The USB expansion board 4 collects data from the LiDAR module 7, camera module 8, voice recognition module 9, and driving control module 3, and then sends it to the USB module 505 on the control board 5 for reception. The USB module 505 is connected to the minimum system board 501, enabling the use of a single serial port on the microcontroller on the minimum system board 501 to control multiple modules, saving the serial port and I / O port resources of the minimum system board 501. The LiDAR module 7 is used to scan surrounding obstacles to achieve obstacle avoidance and learning to follow the nearest target. The camera module 8 is used for visual recognition learning, and the voice recognition module 9 is used for voice recognition technology learning.

[0030] The wireless communication module 6 is connected to the minimum system board 501. Users can wirelessly control the smart car via a remote control or smartphone. In this embodiment, the wireless communication module 6 can be an ESP-32 WiFi wireless communication module.

[0031] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A highly expandable intelligent teaching vehicle, characterized in that, include: The vehicle body has four symmetrically arranged driving wheels. The control board includes a chip socket, a minimum system board, output terminals, and a terminal configuration module. The terminal configuration module includes a first switch module, a second switch module, a third switch module, and a switch controller. The control terminals of the first and second switch modules are respectively connected to the switch controller. The input terminal of the first switch module is connected to the VCC terminal of the minimum system, and its output terminal is connected to the output terminal. The input terminal of the second switch module is connected to the GND terminal of the minimum system. The input terminal of the third switch module is connected to the IO terminal of the minimum system board. The output terminals of the second and third switch modules are respectively connected to the output terminal. The switch controller is connected to the minimum system board. A driving control module is connected to the control board and the driving wheels.

2. The highly expandable intelligent teaching vehicle according to claim 1, characterized in that, The output terminal consists of multiple LPT pins, and the number of switching circuits in the first switch module, the second switch module, and the third switch module corresponds one-to-one with the number of LPT pins.

3. The highly expandable intelligent teaching vehicle according to claim 2, characterized in that, The first and second switch modules are both multiplexers, and the third switch module is a DIP switch.

4. The highly expandable intelligent teaching vehicle according to claim 1, characterized in that, The minimum system board is a microcontroller minimum system board based on the 8051 core, a microcontroller minimum system board based on the ARM-M core, or a microcontroller minimum system board based on the ARM-A core.

5. The highly expandable intelligent teaching vehicle according to claim 1, characterized in that, The control board is equipped with a USB module, a power switching circuit, and a memory, which are respectively connected to the minimum system board.

6. The highly expandable intelligent teaching vehicle according to claim 5, characterized in that, The vehicle body is also equipped with a USB expansion board, a LiDAR module, a camera module, and a voice recognition module. The LiDAR module, camera module, voice recognition module, and driving control module are respectively connected to the input end of the USB expansion board, and the output end of the USB expansion board is connected to the USB module.

7. The highly expandable intelligent teaching vehicle according to claim 1, characterized in that, The vehicle body is equipped with a wireless communication module, which is connected to the minimum system board.

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