Voice-controlled mobile chassis

Abstract

The utility model relates to a kind of mobile chassis of voice control, including chassis and the wheel of being set in the lower end of chassis, chassis includes shell, steering mechanism and moving mechanism, the upper end of shell is detachably connected with upper cover, the upper end surface of upper cover is set with placing groove, the bottom of shell is rotatably provided with steering mechanism and moving mechanism;The steering mechanism includes first motor, moving mechanism includes second motor, first motor and second motor are connected with control circuit, control circuit includes main control module, drive module and offline voice control module, offline voice control module is connected with main control module, the output end of main control module connects drive module, first motor and second motor are connected power supply through drive module and form loop.The utility model sets up main control module, drive module and offline voice control module, for reading external voice instruction, using voice control provides hardware basis, setting steering mechanism and moving mechanism realize mobile chassis electric operation.

Description

Technical Field

[0001] This utility model relates to the field of material handling equipment technology, specifically to a voice-controlled mobile chassis. Background Technology

[0002] Currently, goods handling typically utilizes mechanized chassis systems such as trolleys and hand-pushed flatbeds. These products require manual pushing or control, making them inconvenient to use. With the rapid development of technologies such as artificial intelligence, human-computer interaction, mechanical control, and high-capacity batteries, as well as the improved surface of office areas, elevators, and streets, electric chassis have seen rapid development. For example, CN220819435U discloses a mobile chassis controlled by a remote control, which improves work efficiency compared to mechanized chassis. However, the remote control is prone to damage or loss, rendering the electric chassis unusable.

[0003] Therefore, there is an urgent need for an electric chassis that can complete the transportation work without the need for external equipment control. Summary of the Invention

[0004] This invention addresses the problems of inconvenient control and use of existing electric chassis. It proposes a voice-controlled mobile chassis, comprising a main control module, a drive module, and an offline voice control module. This provides the hardware foundation for reading external voice commands and enabling voice control. A steering mechanism and a movement mechanism are included to achieve electric operation of the mobile chassis.

[0005] To achieve the above objectives, this utility model provides a voice-controlled mobile chassis, including a chassis and wheels disposed at the lower end of the chassis. The chassis includes a housing, a steering mechanism, and a moving mechanism. A top cover is detachably connected to the upper end of the housing, and a placement groove is provided on the upper surface of the top cover. The steering mechanism and the moving mechanism are rotatably disposed at the bottom of the housing. The steering mechanism includes a first motor, and the moving mechanism includes a second motor. Both the first motor and the second motor are connected to a control circuit. The control circuit includes a main control module, a drive module, and an offline voice control module. The offline voice control module is communicatively connected to the main control module. The output of the main control module is connected to the drive module. The first motor and the second motor are connected to a power supply through the drive module to form a circuit.

[0006] The offline voice control module can record and recognize voice commands, providing the hardware foundation for the operation of the voice-controlled vehicle.

[0007] Furthermore, the steering mechanism also includes casters and reversing gears; The housing is a cylindrical structure with a hollow interior and an open top. A circular through hole is provided on the bottom surface of the housing. A caster wheel is provided at the position of the circular through hole. The caster wheel is rotatably connected to the housing through a bearing. A connecting shaft is fixedly provided at the upper end of the caster wheel. A reversing gear is provided on the connecting shaft. The reversing gear includes two meshing bevel gears. One of the two bevel gears is fixed to the connecting shaft and the other is fixed to the output shaft of the first motor. The first motor is provided with a first motor mounting base, and the first motor is fixed to the housing through the first motor mounting base. The first motor mounting base has an L-shaped structure.

[0008] The mobile platform can turn left and right by adjusting the casters.

[0009] Furthermore, the moving mechanism also includes a second connecting shaft, a limiting bracket, a first gear, and a second gear. The two ends of the second connecting shaft are rotatably connected to the limiting bracket via bearings. The limiting bracket is an n-shaped plate, and the bottom end of the limiting bracket is fixed to the bottom surface of the housing. A first gear is fixedly mounted on the second connecting shaft. The first gear and the second gear mesh with each other. The second gear is fixed to the output shaft of the second motor. The second motor is provided with a second motor mount. The second motor is fixed to the bottom surface of the housing through the second motor mount. The second motor mount has an L-shaped structure.

[0010] Furthermore, there are two rectangular through holes symmetrically arranged on the housing, and the wheel is arranged on the connecting shaft two corresponding to the rectangular through holes, with the wheel passing through the rectangular through holes.

[0011] The movement and reversal of the vehicle are achieved through a moving mechanism.

[0012] Furthermore, the side wall of the housing has a plurality of ultrasonic ranging sensors arranged in an equidistant ring array. The plurality of ultrasonic ranging sensors are fixed to the side of the housing, and the output end of the ultrasonic ranging sensors is connected to the input end of the main control module.

[0013] Setting up multiple ultrasonic ranging sensors provides the hardware foundation for obstacle avoidance control.

[0014] The beneficial effects of this utility model through the above technical solution are as follows: This invention provides the hardware foundation for a mobile chassis to use voice control for left turns, right turns, movement, and direction changes. Compared to remote control, it is more convenient to operate and eliminates concerns about lost or damaged remotes. The system includes a housing, a steering mechanism, and a moving mechanism. A placement slot is provided at the top of the housing for placing items to be moved. The housing is rotatably connected to the steering mechanism, which is driven by a first motor. The moving mechanism is located within the steering mechanism and includes wheels driven by a second motor. For electric control, the first and second motors are connected to a control circuit. This control circuit includes a main control module, a drive module, and an offline voice control module, employing an embedded design for a simple circuit structure. The offline voice control module receives and interprets voice commands and communicates with the main control module. The main control module controls the drive module to operate the first and second motors through the control commands output by the offline voice control module. This invention has a simple structure and is easy to use. Attached Figure Description

[0015] Figure 1 This is one of the structural schematic diagrams of a voice-controlled mobile chassis according to this utility model; Figure 2 This is the second structural schematic diagram of a voice-controlled mobile chassis according to this utility model; Figure 3 This is the third structural schematic diagram of a voice-controlled mobile chassis according to this utility model; Figure 4 This is the fourth structural schematic diagram of a voice-controlled mobile chassis according to this utility model.

[0016] Figure 5 This is an electrical schematic diagram of a voice-controlled mobile chassis according to this utility model.

[0017] Reference numerals: 1 is the housing, 2 is the placement slot, 3 is the first motor, 4 is the second motor, 5 is the main control module, 6 is the drive module, 7 is the offline voice control module, 8 is the universal wheel, 9 is the first connecting shaft, 10 is the reversing gear, 11 is the first motor mounting base, 12 is the second connecting shaft, 13 is the limit bracket, 14 is the first gear, 15 is the second gear, 16 is the top cover, 17 is the second motor base, 18 is the wheel, 19 is the rectangular through hole, and 20 is the ultrasonic ranging sensor. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Example

[0019] like Figures 1-5As shown, a voice-controlled mobile chassis includes a chassis and wheels 18 disposed at the lower end of the chassis. The chassis includes a housing 1, a steering mechanism and a moving mechanism. A cover 16 is detachably connected to the upper end of the housing 1. A placement groove 2 is opened on the upper surface of the cover 16. The steering mechanism and the moving mechanism are rotatably disposed at the bottom of the housing 1. The steering mechanism includes a first motor 3, and the moving mechanism includes a second motor 4. Both the first motor 3 and the second motor 4 are connected to a control circuit. The control circuit includes a main control module 5, a drive module 6, and an offline voice control module 7. The offline voice control module 7 is communicatively connected to the main control module 5. The output of the main control module 5 is connected to the drive module 6. The first motor 3 and the second motor 4 are connected to a power source through the drive module 6 to form a circuit.

[0020] The steering mechanism also includes a universal wheel 8 and a reversing gear 10; The housing 1 is a cylindrical structure with a hollow interior and an open top. A circular through hole is provided on the bottom surface of the housing 1. A caster wheel 8 is provided at the position of the circular through hole. The caster wheel 8 is rotatably connected to the housing 1 through a bearing. A connecting shaft 9 is fixedly provided at the upper end of the caster wheel 8. A reversing gear 10 is provided on the connecting shaft 9. The reversing gear 10 includes two meshing bevel gears. One of the two bevel gears is fixed to the connecting shaft 9, and the other is fixed to the output shaft of the first motor 3. The first motor 3 is provided with a first motor mounting base 11, and the first motor 3 is fixed to the housing 1 through the first motor mounting base 11. The first motor mounting base 11 has an L-shaped structure.

[0021] The upper cover 16 has a cylindrical structure corresponding to the shell 1, and the upper cover 16 is fastened and fixed to the shell 1.

[0022] The moving mechanism also includes a second connecting shaft 12, a limiting bracket 13, a first gear 14 and a second gear 15. The two ends of the second connecting shaft 12 are respectively rotatably connected to the limiting bracket 13 through bearings. The limiting bracket 13 is an n-shaped plate, and the bottom end of the limiting bracket 13 is fixed to the bottom surface of the housing 1. A first gear 14 is fixedly mounted on the connecting shaft 12. The first gear 14 and the second gear 15 are meshed together. The second gear 15 is fixed to the output shaft of the second motor 4. The second motor 4 is provided with a second motor base 17. The second motor 4 is fixed to the bottom surface of the housing 1 through the second motor base 17. The second motor base 17 has an L-shaped structure.

[0023] The housing 1 has two symmetrical rectangular through holes 19. The wheel 18 is installed on the connecting shaft 12 corresponding to the rectangular through holes 19, and the wheel 18 passes through the rectangular through holes 19.

[0024] In this embodiment, both the first motor 3 and the second motor 4 are servo motors. The main control module 5 uses an STM32 microcontroller, and a power supply, including a charging circuit and a battery, is installed inside the housing 1. A charging port is provided on the housing 1 corresponding to the charging circuit. The drive module 6 uses an L289N driver chip, which has a forward and reverse rotation circuit. The main control module 5 controls the diodes in the forward and reverse rotation circuit of the L289N driver chip to change the direction of the first motor 3 and the second motor 4. The offline voice control module 7 uses an SU-03T module, which communicates with the main control module 5 via a UART serial port. The SU-03T module can store multiple voice commands such as "start working, forward, backward, turn left, turn right, stop working".

[0025] For ease of understanding, the voice-controlled mobile chassis will be described based on the hardware circuit of this application: During operation, the user gives the start command, and the microphone of the SU-03T module converts the sound signal into an electrical signal. The offline voice control module 7 outputs a command to the main control module 5, and the main control module 5 begins operation. Next, the user gives any command for forward, backward, left turn, or right turn. For example, for forward, the main control module 5 controls the drive module 6 to power on the second motor 4, causing it to rotate forward. The second motor 4, through the second gear 15, drives the first gear 14 to rotate, which in turn connects to the second shaft 12, causing the wheels 18 to rotate and moving the chassis forward. When the user gives the backward command, the operation of the moving mechanism is the same as for forward, except that when the main control module 5 receives the backward command, it controls the drive module 6 to reverse the second motor 4.

[0026] When the user says "turn left," the main control module 5 controls the drive module 6 to power on the first motor 3. The first motor 3 deflects, which in turn drives the universal wheel 8 to deflect to the left through the reversing gear 10 and the connecting shaft 9. The deflection of the universal wheel 8 to the left causes the entire mobile chassis to turn to the left.

[0027] When the user says "turn right," the steering mechanism operates in the same way as when turning left. The difference is that when the main control module 5 receives the right turn command, it controls the drive module 6 to reverse the first motor 3.

[0028] Multiple ultrasonic ranging sensors 20 are arranged in an equidistant ring on the side wall of the housing 1. The multiple ultrasonic ranging sensors 20 are fixed to the side of the housing 1, and the output end of the ultrasonic ranging sensor 20 is connected to the input end of the main control module 5.

[0029] In this embodiment, there are eight ultrasonic ranging sensors 20, which are arranged in an equidistant array along the circumference of the housing 1. That is, the eight ultrasonic ranging sensors 20 detect the left, right, front, rear, left-front, right-front, left-rear, and right-rear directions of the moving chassis. The ultrasonic ranging sensors 20 send the detected parameters to the main control module 5.

[0030] Furthermore, when the ultrasonic ranging sensor 20 detects an obstacle, the main control module 5 sends the detection result to the offline voice control module 7 (SU-03T module). The offline voice control module 7 emits a warning sound through a speaker to remind the user that there is an obstacle on the road where the chassis is moving.

[0031] At the same time, the main control module 5 stops the second motor from working through the drive module 6.

[0032] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A voice-controlled mobile chassis, comprising a chassis and wheels (18) disposed at the lower end of the chassis, characterized in that, The chassis includes a housing (1), a steering mechanism and a moving mechanism. The upper end of the housing (1) is detachably connected to a top cover (16). The upper surface of the top cover (16) is provided with a placement groove (2). The bottom of the housing (1) is rotatably provided with a steering mechanism and a moving mechanism. The steering mechanism includes a first motor (3), and the moving mechanism includes a second motor (4). Both the first motor (3) and the second motor (4) are connected to a control circuit. The control circuit includes a main control module (5), a drive module (6), and an offline voice control module (7). The offline voice control module (7) is communicatively connected to the main control module (5). The output of the main control module (5) is connected to the drive module (6). The first motor (3) and the second motor (4) are connected to a power supply through the drive module (6) to form a circuit.

2. The voice-controlled mobile chassis according to claim 1, characterized in that, The steering mechanism also includes a universal wheel (8) and a reversing gear (10). The housing (1) is a cylindrical structure with a hollow interior and an open top. A circular through hole is provided on the bottom surface of the housing (1). A universal wheel (8) is provided corresponding to the position of the circular through hole. The universal wheel (8) is rotatably connected to the housing (1) through a bearing. A connecting shaft (9) is fixedly provided at the upper end of the universal wheel (8). A reversing gear (10) is provided on the connecting shaft (9). The reversing gear (10) includes two meshing bevel gears. One of the two bevel gears is fixed to the connecting shaft (9), and the other is fixed to the output shaft of the first motor (3). The first motor (3) is provided with a first motor mounting base (11), and the first motor (3) is fixed to the housing (1) through the first motor mounting base (11). The first motor mounting base (11) has an L-shaped structure.

3. The voice-controlled mobile chassis according to claim 1, characterized in that, The moving mechanism also includes a second connecting shaft (12), a limiting bracket (13), a first gear (14), and a second gear (15). The two ends of the second connecting shaft (12) are rotatably connected to the limiting bracket (13) through bearings. The limiting bracket (13) is an n-shaped plate, and the bottom end of the limiting bracket (13) is fixed to the bottom surface of the housing (1). A first gear (14) is fixedly installed on the connecting shaft (12). The first gear (14) and the second gear (15) are meshed and connected. The second gear (15) is fixed to the output shaft of the second motor (4). The second motor (4) is provided with a second motor seat (17). The second motor (4) is fixed to the bottom surface of the housing (1) through the second motor seat (17). The second motor seat (17) has an L-shaped structure.

4. The voice-controlled mobile chassis according to claim 3, characterized in that, The housing (1) has two rectangular through holes (19) symmetrically arranged. The wheel (18) is arranged on the connecting shaft (12) corresponding to the rectangular through holes (19). The wheel (18) passes through the rectangular through holes (19).

5. A voice-controlled mobile chassis according to claim 1, characterized in that, The housing (1) has multiple ultrasonic ranging sensors (20) arranged in an equidistant ring on its side wall. The multiple ultrasonic ranging sensors (20) are fixed to the side of the housing (1), and the output end of the ultrasonic ranging sensor (20) is connected to the input end of the main control module (5).

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