CN216901994U - Microbit-based Mecanum wheel trolley - Google Patents

Abstract

The application discloses mecanum wheel dolly based on Microbit, which comprises a base, bolt fixedly connected with DC motor is passed through at the top on chassis, DC motor is through the output fixedly connected with mecanum wheel of its one side, the top central authorities position department on chassis is through bolt fixedly connected with lithium battery power, one side position department that the top on chassis is close to lithium battery power is provided with ultrasonic sensor, infrared line sensor, motor interface, full-color RGB lamp and development board slot of patrolling. This mecanum wheel dolly based on Microbit through regarding the expansion plate as the dolly chassis, adopts the circuit on the printed circuit to connect between the open source hardware module on the chassis, uses mecanum wheel can realize the omnidirectional movement of dolly, accomplishes more easily and patrols the line, keeps away barrier and other tasks to with multiple open source hardware module integrated to the circuit board on, avoid using contact failure or not hard up that dupont line connection brought.

Description

Microbit-based Mecanum wheel trolley

Technical Field

The application relates to the technical field of Microbit, in particular to a Mecanum wheel trolley based on Microbit.

Background

The Microbit is a programmable microcomputer and is mainly used for teenager programming education. At present, various expansion boards have appeared based on the Microbit, but general interface is single, the content that can extend is less, can not satisfy current operation requirement, be used for educational programming robot in the existing market, mostly need oneself the equipment, the motor, the wheel, interface and dolly chassis compatibility such as sensor are relatively poor, it is not friendly enough to the classmate of low age bracket, and, adopt the dupont line connection between the most open source hardware module, make mistakes easily during the connection or the interface is not hard up, it is not very convenient to the beginner, the interface is single, the extensible content is less.

SUMMERY OF THE UTILITY MODEL

It is an object of the present application to overcome the above problems or to at least partially solve or mitigate the above problems.

According to an aspect of the application, a mecanum wheel dolly based on Microbit is provided, which comprises a base, bolt fixedly connected with DC motor is passed through at the top on chassis, DC motor is through the output fixedly connected with mecanum wheel of its one side, the top central authorities position department on chassis is through bolt fixedly connected with lithium cell power, one side position department that the top on chassis is close to lithium cell power is provided with ultrasonic sensor, infrared line sensor, motor interface, full-color RGB lamp and development board slot of patrolling, infrared line sensor, motor interface and full-color RGB lamp are located between ultrasonic sensor and the development board slot, and infrared line sensor that patrols is located one side of motor interface and full-color RGB lamp, motor interface is located one side of full-color RGB lamp, the opposite side position department that the top on chassis is close to battery power is provided with steering wheel interface, Remote controller receiver and switch button, the steering wheel interface is located between remote controller receiver and the switch button, the top on chassis is provided with bee calling organ and the interface that Type-C charges, lithium battery power is located bee calling organ and Type-C and charges between the interface, one side position department fixedly connected with light that ultrasonic sensor is close to in the top on chassis, one side position department that the top on chassis is close to infrared line sensor that patrols is provided with the I2C interface.

Optionally, the chassis is a circuit expansion board, and the circuit expansion board has a circuit printed thereon.

Optionally, the number of the motor interfaces is four, the four motor interfaces are symmetrically arranged at the top of the chassis, and the motor interfaces are connected with the direct current motor.

Optionally, the mecanum wheel has an outer diameter of 60mm, and is divided into a left-handed wheel and a right-handed wheel.

Optionally, the infrared line patrol sensors are arranged in two, and the two infrared line patrol sensors are symmetrically arranged on the top of the chassis.

Optionally, the steering engine interface is an 8-way steering engine interface.

Optionally, a groove is formed in a position, close to one side of the mecanum wheel, on an outer wall of one side of the chassis.

Optionally, all adopt the electricity to be connected between lithium battery power, ultrasonic sensor, infrared line sensor, bee calling organ, motor interface, steering wheel interface, remote controller receiver, the little bit development board slot, the Type-C interface that charges, full-color RGB lamp, switch button, light and the I2C interface.

The utility model provides a mecanum wheel dolly based on Microbit, through regarding the expansion board as the dolly chassis, adopt the circuit on the printed circuit to connect between the hardware module of opening sources on the chassis, use mecanum wheel can realize the omnidirectional movement of dolly, accomplish more easily and patrol the line, keep away barrier and other tasks, and with the integration of multiple hardware module of opening sources to the circuit board, avoid using contact failure or not hard up that dupont line connection brought, the function is abundant and high-efficient, make beginner's easier to go up hand during development, and can install the building blocks bottom plate on the chassis, the function of extension building blocks.

The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic diagram of a circuit interface of a chassis of a Microbit-based Mecanum wheel cart in accordance with one embodiment of the present invention;

FIG. 2 is a top view of the Mecanum wheel truck of FIG. 1;

FIG. 3 is a side view of the Mecanum wheel truck of FIG. 1;

FIG. 4 is a schematic diagram of a lithium battery power supply of the Mecanum wheel cart of FIG. 1;

FIG. 5 is a circuit diagram of 18650 rechargeable batteries of the Mecanum wheel truck of FIG. 1;

FIG. 6 is a circuit diagram of a power switch of the Mecanum wheel cart of FIG. 1;

FIG. 7 is a schematic of a boost circuit for the Mecanum wheel cart of FIG. 1;

FIG. 8a is a circuit diagram of the infrared routing sensing circuit LED14 of the Mecanum wheel cart of FIG. 1;

FIG. 8b is a circuit diagram of the infrared patrol sensing circuit LED15 of the Mecanum wheel cart of FIG. 1;

FIG. 8c is a circuit diagram of an infrared cruise control circuit for the Mecanum wheel cart of FIG. 1;

FIG. 9 is a schematic view of the slot of the Microbit development board of the Mecanum wheel cart shown in FIG. 1;

FIG. 10 is a buzzer circuit diagram for the Mecanum wheel cart of FIG. 1;

FIG. 11 is a schematic view of the I2C bus interface of the Mecanum wheel truck of FIG. 1;

FIG. 12 is a circuit diagram of a DC motor drive for the Mecanum wheel cart of FIG. 1;

FIG. 13 is a circuit diagram of a full color RGB lamp for the Mecanum wheel cart of FIG. 1;

FIG. 14 is a circuit diagram of a lamp for the Mecanum wheel truck of FIG. 1;

fig. 15 is a circuit diagram of an ultrasonic sensor of the mecanum wheel cart of fig. 1.

Reference numerals:

1-a chassis; 2-a direct current motor; 3-Mecanum wheels; 4-lithium battery power supply; 5-an ultrasonic sensor;

6-infrared line patrol sensor; 7-a buzzer; 8-motor interface; 9-a steering engine interface; 10-a remote control receiver; 11-Microbit development board slot; 12-Type-C charging interface; 13-full color RGB lamp; 14-power switch key; 15-lighting lamps; 16-I2C interface.

Detailed Description

FIG. 1 is a schematic diagram of a circuit interface of a chassis of a Microbit-based Mecanum wheel cart according to an embodiment of the present invention. Referring to fig. 1, an embodiment of the present application provides a micanum wheel cart based on the Microbit, which includes a chassis 1, where the chassis 1 is a circuit expansion board, and a circuit is printed on the circuit expansion board.

Fig. 2 is a top view of the mecanum wheel cart shown in fig. 1. Referring to fig. 2, bolt fixedly connected with direct current motor 2 is passed through at the top of chassis 1, direct current motor 2 is through the output fixedly connected with mecanum wheel 3 of its one side, mecanum wheel 3's outer lane diameter is 60mm, divide left-handed wheel and dextrorotation wheel, one side position department that is close to mecanum wheel 3 on the outer wall of one side of chassis 1 sets up flutedly, the top central point department of chassis 1 is through bolt fixedly connected with lithium battery power 4, lithium battery power 4 carries out stable power supply to dolly expansion board and development board.

Referring to fig. 1, an ultrasonic sensor 5, an infrared line patrol sensor 6, a motor interface 8, a full-color RGB lamp 13 and a development board slot 11 are arranged at a position on one side of the top of the chassis 1 close to the lithium battery power supply 4, the model of the ultrasonic sensor 5 is HC-RS04, and a specific circuit is shown in fig. 15. Working voltage: 3.3V to 5V, working frequency: 40Hz, utilize the characteristics that ultrasonic frequency is high, the wavelength is short, the directionality is good, realize range finding and keep away the barrier, the model that infrared line sensor 6 adopted is TCRT5000, specifically as shown in figure 8a, 8b, 8c, infrared line sensor 6 that patrols directly links to each other through the interface on the Microbit development board slot 11 and the Microbit, detection distance: 1mm-25mm, working voltage: 3.3V-5V utilizes the electric pulse to carry out data sampling, can realize keeping away the barrier and patrolling the line function, and infrared line sensor 6 that patrols is provided with two altogether, and two infrared line sensor 6 symmetries that patrol set up at the top on chassis 1, and infrared line sensor 6's model of patrolling is TCRT5000, detection distance: 1mm-25mm, working voltage: 3.3V-5V, the number of the motor interfaces 8 is four, the four motor interfaces 8 are symmetrically arranged at the top of the chassis 1, the motor interfaces 8 are connected with the direct current motor 2, the direct current motor driving circuit diagram in the figure 12 can be directly connected with an interface on the micro bit through an expansion board slot to generate a PWM signal so as to drive and control the direct current motor 2 on the expansion board, a micro bit socket of the expansion board in the micro bit development board slot 11 can be connected with a golden finger of the micro bit development board, and plugging and unplugging are simple and convenient; the schematic diagram of the slot 11 of the Microbit development board is shown in detail in fig. 9.

The infrared line patrol sensor 6, the motor interface 8 and the full-color RGB lamp 13 are located between the ultrasonic sensor 5 and the development board slot 11, the infrared line patrol sensor 6 is located on one side of the motor interface 8 and the full-color RGB lamp 13, the motor interface 8 is located on one side of the full-color RGB lamp 13, the full-color RGB lamp 13 can program the LED lamp, a specific circuit is shown in fig. 13, a WS2812B chip is adopted, the refreshing frequency is 30 frames per second, the effect of a breathing lamp or a water lamp can be achieved, a steering engine interface 9, a remote controller receiver 10 and a power switch key 14 are arranged at the position, close to the other side of the battery power supply 4, of the top of the chassis 1, the steering engine interface 9 is an 8-way steering engine interface, the steering engine interface 9 is located between the remote controller receiver 10 and the power switch key 14, and the steering engine interface 9 adopts a PCA96 9685PW chip and can be connected with a steering engine.

Fig. 3 is a side view of the mecanum wheel cart shown in fig. 1. Referring to fig. 1 and 3, the top of the chassis 1 is provided with a buzzer 7 and a Type-C charging interface 12, the Type-C charging interface 12 can charge a lithium battery, the rated current is 1A, the working temperature is-30 to +80 degrees, the sound frequency of the buzzer 7 is controllable, specifically, as shown in fig. 10, the buzzer is driven by an s8550 triode, the working voltage is 3.3V to 5V, the control can be performed through a GPIO interface, some sounding sounds are emitted, and the lithium battery power supply 4 is located between the buzzer 7 and the Type-C charging interface 12.

Referring to fig. 2, an illuminating lamp 15 is fixedly connected to a position on one side of the top of the chassis 1 close to the ultrasonic sensor 5, the illuminating lamp 15 can implement an LED illuminating function, and a circuit diagram is shown in fig. 14. As shown in fig. 1, a lithium battery power source 4, an ultrasonic sensor 5, an infrared line patrol sensor 6, a buzzer 7, a motor interface 8, a steering engine interface 9, a remote controller receiver 10, a micro bit development board slot 11, a Type-C charging interface 12, a full-color RGB lamp 13, a power switch key 14, an illuminating lamp 15 and an I2C interface 16 are all connected by a circuit on a printed circuit, an I2C interface 16 is arranged at a position on one side of the top of a chassis 1, which is close to the infrared line patrol sensor 6, so that an I2C bus interface and a UART serial interface can be connected with a P19 interface and a P20 interface of the micro bit development board, and the power switch key 14 can control whether the whole expansion board is powered on, wherein a circuit diagram of a power switch is shown in fig. 6, and a schematic diagram of an I2C bus interface is shown in fig. 11.

Wherein: the structural schematic diagram of the lithium battery power supply is specifically shown in fig. 5, a reset fuse is adopted to limit and protect current, the lithium battery power supply circuit comprises a chip DW01 and a chip 8205, the anode of a 18650 rechargeable battery is connected with one end of a resistor R5, the other end of the resistor R5 is connected with the 5 port of the chip DW01 and one end of a capacitor C2, and the cathode of the 18650 rechargeable battery is connected with the other end of the capacitor C2, the 1 port of the chip 8205 and the 6 port of the chip DW 01; the port 1 of the chip DW01 is connected to the port 6 of the chip 8205, the port 2 of the chip DW01 is connected to one end of the resistor R4, the other end of the resistor R4 is grounded, the port 3 of the chip DW01 is connected to the port 4 of the chip 8205, the port 3 of the chip 8205 is grounded, the port 2 is connected to the port 5 thereof, and the voltage boost circuit in fig. 7 can boost the output voltage of 3.7V at the interface of the 18650 rechargeable battery to 5V, wherein the circuit of the 18650 rechargeable battery is specifically shown in fig. 4.

The utility model provides a mecanum wheel dolly is when using, the circuit that the matching agrees with is printed according to the kind and the quantity of open source hardware module on chassis 1, with lithium battery power 4, ultrasonic sensor 5, infrared line sensor 6 that patrols, bee calling organ 7, motor interface 8, steering wheel interface 9, remote controller receiver 10, the little bit development board slot 11, Type-C charges interface 12, full-color RGB lamp 13, switch button 14 and light 15 set up on chassis 1, chassis 1 becomes the circuit expansion board, be connected direct current motor 2 with motor interface 8, direct current motor 2 drives mecanum wheel 3 through the output of its one side during the circular telegram work, realize the removal of dolly through the contact of mecanum wheel 3 with ground, ultrasonic sensor 5 and infrared line sensor 6 that patrols mutually supporting realization dolly patrol the line and keep away the barrier.

The utility model provides a mecanum wheel dolly based on Microbit, through regarding the expansion board as dolly chassis 1, adopt the circuit on the printed circuit to connect between the hardware module of opening sources on the chassis 1, use mecanum wheel 3 can realize the omnidirectional movement of dolly, accomplish the line patrol more easily, keep away barrier and other tasks, and with the integration of multiple hardware module of opening sources to the circuit board, avoid using the contact failure or not hard up that dupont line connection brought, the function is abundant and high-efficient, make beginner's easier shang during development, and can install the building blocks bottom plate on chassis 1, the function of extension building blocks.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (8)

1. The utility model provides a mecanum wheel dolly based on Microbit which characterized in that includes: the chassis is provided with a plurality of supporting plates,

the intelligent multi-functional intelligent platform is characterized in that a direct current motor is fixedly connected to the top of the chassis through a bolt, a Mecanum wheel is fixedly connected to the output end of one side of the direct current motor through the output end of the direct current motor, a lithium battery power supply is fixedly connected to the center of the top of the chassis through the bolt, an ultrasonic sensor, an infrared line patrol sensor, a motor interface, a full-color RGB lamp and a development board slot are arranged at one side of the top of the chassis, which is close to the lithium battery power supply, the infrared line patrol sensor, the motor interface and the full-color RGB lamp are located between the ultrasonic sensor and the development board slot, the infrared line patrol sensor is located at one side of the motor interface and the full-color RGB lamp, and the motor interface is located at one side of the full-color RGB lamp;

the utility model discloses a lithium battery power supply, including chassis, battery power supply, steering wheel interface, remote controller receiver and switch button, the opposite side position department that the top on chassis is close to battery power is provided with steering wheel interface, remote controller receiver and switch button, the steering wheel interface is located between remote controller receiver and the switch button, the top on chassis is provided with bee calling organ and Type-C interface that charges, lithium battery power is located between bee calling organ and the Type-C interface that charges, the top on chassis is close to ultrasonic sensor's one side position department fixedly connected with light, the top on chassis is close to one side position department that infrared was patrolled line sensor and is provided with the I2C interface.

2. The Microbit-based mecanum wheel cart of claim 1, wherein the chassis is a circuit expansion board and the circuit expansion board has circuitry printed thereon.

3. The Microbit-based mecanum wheel cart of claim 1, wherein there are four motor interfaces, and the four motor interfaces are symmetrically disposed on the top of the chassis, and the motor interfaces are connected to the dc motor.

4. A microtit-based mecanum wheel cart as claimed in claim 1, wherein the outer diameter of the mecanum wheel is 60 mm.

5. The Microbit-based mecanum wheel cart of claim 1, wherein there are two infrared routing sensors, and the two infrared routing sensors are symmetrically disposed on top of the chassis.

6. The Microbit-based mecanum wheel cart of claim 1, wherein the steering engine interface is an 8-way steering engine interface.

7. The Microbit-based mecanum wheel cart of claim 1, wherein a recess is formed in the outer wall of one side of the chassis at a position adjacent to one side of the mecanum wheel.

8. The mobit wheel dolly of claim 1-7 based on the dibit of any one of them, characterized by that, all adopt the electricity to connect between lithium cell power, ultrasonic sensor, infrared line sensor, bee calling organ, motor interface, steering wheel interface, remote controller receiver, the dibit development board slot, Type-C interface that charges, full-color RGB lamp, switch button, light and the I2C interface.

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