Automatic walking luggage compartment Bluetooth luggage compartment intelligent following luggage compartment pre-sale in advance

  1、 Overview of smart suitcase smart suitcase is also called automatic following suitcase, one click recall suitcase, embedded motherboard suitcase, riding suitcase and automatic following suitcase
1
Smart trunk is a trunk system scheme with following, obstacle avoidance and riding functions
The following is realized through wireless mode, and obstacle avoidance and fall prevention are realized through lidar sensor

Movement: forward, brake, turn left, turn right
Follow: locate the relative position of the target, follow the target forward and turn
Obstacle avoidance: identify and avoid obstacles

2
The trunk following system mainly includes label, base station, motor controller and motor
The base station can judge the distance and offset angle of the tag
According to the distance and offset angle, it can realize the functions of motor drive, steering, braking, acceleration and deceleration through a series of algorithms, so as to achieve the purpose of following

2、 Smart trunk workflow
1、  The smart suitcase can be set to follow automatically, and the label can be worn on the hand, in the trouser pocket, in the bag and anywhere
The trunk will follow people forward, steering, braking, acceleration and deceleration, obstacle avoidance and so on

2
The smart suitcase can also be set to the remote control mode
The remote control mode can be controlled by mobile phone or special * remote control to realize forward, steering, braking, acceleration and deceleration and obstacle avoidance
technological process:
 
3、 Intelligent trunk scheme block diagram
 
4、 Main functions of smart trunk
1
Wireless following
One base station, one tag
Base station: placed directly in front of the trunk, facing the owner
*(label): the owner takes it in his hand, puts it in his bag or wears it on his hand
2
Wheel hub motor drive plate
  Motor hub protection, etc
3
Collision avoidance
Lidar sensors (3 pcs
) measure the distance between the left, middle and right obstacles ahead, judge the position of the obstacles, and make avoidance or parking actions
4
Fall prevention
The infrared fall prevention principle is adopted to measure the distance between the chassis and the ground, and brake immediately when it is higher than a certain distance

5、 Introduction to the function of intelligent luggage compartment
1
Ride module
It can be controlled by * or the buttons on the trunk
It can accelerate slowly during startup and brake slowly during braking
There will be no rollover, and the speed is no-load 5km / H 3 & mdash; under load; 4km / h, flexible turning, two wheels use the differential principle to turn, the turning radius is infinitely small, the motor can turn in place one after another, the riding direction can be realized (forward Left right braking), the riding is stable and smooth, and there will be no sense of frustration

2
Follow module
The tag is placed on the owner, and the base station is placed directly in front of the trunk
The trunk follows the tag, turning left, turning right, braking, etc

The trunk follows smoothly without obvious pause
The following distance is kept at a certain distance, and there will be no loss or too far distance (for example, more than 3m)
3
Alarm when the distance exceeds the set distance
4
Automatic obstacle avoidance and path planning module
Three lidar transceiver modules are used for obstacle identification and ranging
When encountering general corners or obstacles, they can bypass or avoid
If they exceed the bypassable radius, they will stop and give an alarm, so as not to follow the wrong target
During operation, the signal is stable without signal interruption, especially in the use of airports and high-speed railway stations

5
Anti drop module
In case of big pit or low step, stop or brake automatically and give an alarm
6
* communication module
Communicate with * and interact with key signals of labels, distance and angle information, and alarm information

6、 Main technical indexes of smart trunk
*  The data measured by the positioning base station can reach the update rate of 500Hz after filtering algorithm

*  Follow range: follow range when using ordinary antenna 25  M, follow range when using high gain antenna 75  Meters;
*  Tracking and ranging accuracy: 10cm
*  Base station power: no more than 1W
*  Base station operating frequency: 6
2GHz ~ 6
7GHz
*  Base station RF transmission power spectral density: - 41
3dbm/mhz
Label end:
*  Input voltage: DC 5V
*  Rated power: 0
8W
*  Maximum power: 1
5W (instantaneous)
*  Communication interface: UART