CL-IT-007:  Campus Autonomous Roaming Vehicle

I. Product Overview

The campus autonomous roaming vehicle is designed to meet the study tour needs and visiting experiences of primary and secondary school students. It is required to comfortably accommodate two adults and two children. The vehicle will serve not only as a demonstration platform for autonomous driving technology but also as a practical training facility for sensor installation and debugging, thereby supporting the learning and research of advanced driver-assistance functions. Integrating deep learning and artificial intelligence technologies such as image recognition, SLAM positioning, environmental perception, and the recognition of obstacles and traffic signs, the vehicle provides a complete intelligent driving solution. Moreover, the onboard intelligent booking system allows for vehicle reservation via mini-programs, offering convenient mobility services within the campus and bringing an interactive and educationally rich autonomous driving experience to students.

The campus autonomous roaming vehicle is equipped with the following configurations:

I. Configuration List

1. Vehicle Parameters

· Size: Length 2103mm, width 1364mm, height 1993mm, suitable for campus road travel.

· Seating Configuration: Can accommodate two adults and two children, with a total of 4 seats.

· Minimum Ground Clearance: 80mm, adaptable to varied terrain conditions.

· Climbing Capability: Maximum 20% grade, ensuring driving performance when fully loaded.

· Braking Distance: Can safely stop within 20cm, ensuring passenger safety.

· Load Capacity: Maximum load of 280kg, meeting daily transportation needs.

· Curb Weight: The vehicle's own weight is 400kg, light and easy to control.

· Speed Settings: Maximum speed of 15km/h for manual driving, and 10km/h in autonomous driving mode.

· Battery and Range: 80Ah battery capacity, with a range of up to 50km.

· Charging Time: 4 hours for fast charging and 8 hours for slow charging, to meet various usage needs.

· Shell Material: Made of fiberglass, sturdy and durable.

· Frame Material: Integrated carbon steel frame, providing good vehicle support.

· Sunshade Canopy: Equipped with a canopy, offering sun and rain protection for passengers.

· Control Mode: Can switch freely between joystick control and autonomous driving mode.

· Control Facilities: Equipped with buttons to enter and exit autonomous driving mode, light switch buttons, and electronic parking functions.

· Onboard Interaction: 14-inch touchscreen, enhancing the interaction experience between passengers and the vehicle.

· Seat Material: Memory foam and synthetic leather cover, enhancing seating comfort.

· Lighting System: Includes headlights, turn signals, brake lights, and status lights, ensuring safe night-time driving.

· Drive-by-Wire Interface: Equipped with CAN interface, can control throttle, gear, steering, brakes, parking, lights, and horn.

· Drive-by-Wire System: Includes EPS steering system, EHB braking, VCU, and joystick control, enhancing the vehicle's intelligent control capabilities.

1. Computing Unit

· Main Control Chip: Uses Rockchip RK3588S chip, ensuring system computing performance.

· CPU: 8-core 64-bit processor with a frequency of up to 2.4GHz, powerful processing capability.

· GPU: Integrated ARM Mali-G610, with strong graphics processing capability.

· Storage: Equipped with 16MB QSPI Nor FLASH.

· USB Interfaces: Provides USB3.01, USB2.02, and Type-C(USB3.0)*1, meeting diverse peripheral connection needs.

· Ethernet: Supports 10/100/1000Mbps Ethernet, ensuring the stability of network connections.

2. Sensor Configuration

· 16-line Lidar: Equipped with a 16-line lidar with a laser wavelength of 905 nanometers, offering a ranging capability of 150 meters and high precision of ±2 centimeters, with a maximum frame rate of 20 hertz, stable operation in extreme temperatures (-30°C to +60°C).

· Single-line Lidar: Two single-line lidars are installed, capable of 360° two-dimensional scanning detection, with high precision of up to ±3 centimeters, and a maximum detection range of 10 meters. The emission frequency is 10KHz, with a selectable scanning frequency of 10Hz or 20Hz, and a detection range of up to 25 meters at 70% reflectivity. The lidar is driven by an internal brushless motor and transmits data through a standard communication interface.

· Combined Positioning Unit: Supports real-time dynamic differential (RTK) positioning functions of the Global Navigation Satellite System (GNSS) and provides standardized communication protocols. Equipped with high-precision MEMS gyroscopes and accelerometers as well as a multi-mode multi-frequency GNSS receiver, capable of achieving 0.2° heading accuracy and up to 2 centimeters of positional accuracy. The device's supply voltage is 24V DC, supporting input from 10 to 32V DC, with a working current of 2A. The gyroscope's range is ±300°/s, with a zero bias stability of 5.5°/h, and the accelerometer's range is ±6g, with zero bias stability of 0.06mg.

· Ultrasonic Sensor: The Ultrasonic Sensor's ranging capability is from 200 millimeters to 3500 millimeters, with an ultimate measuring range of 130 millimeters to 5000 millimeters. The beam angle can be adjusted between 10° and 60°, able to work stably within a temperature range of -40℃ to +85℃. The measuring accuracy is 5 millimeters at close range, and the far-range measurement accuracy is 0.5% of the detection distance. The measurement distance of the probe is adjustable. The device operates with a power range of +12V to +24V, and the working current is less than 200mA under +12V power supply.

II. Device Functions

1. Autonomous Driving and Ride-Sharing Services:

The device supports convenient services like stop-on-scan, allowing visitors to halt the vehicle by scanning a QR code. Whether passengers operate it or not, the vehicle will automatically switch to autonomous driving mode after 5 minutes. Passengers can start the vehicle by scanning a QR code to pay a deposit; if unlocking fails, the deposit is automatically refunded.

3. Advanced Autonomous Driving Functions:

The vehicle is capable of performing autonomous driving operations, including auto-tracking, obstacle avoidance, detouring, and intersection crossing. It can stably navigate even under the shade of trees or buildings. The vehicle can autonomously drive unoccupied under simple road conditions and carry passengers on suitable segments. When the battery is low, the vehicle can automatically return for charging.

4. Smart Management System:

After returning, the vehicle automatically moves to a nearby vacant station. After operating hours, the vehicle automatically returns to the collection point upon completing its tasks. To ensure the safety of passengers and the vehicle, it is equipped with an internal and external video monitoring system, and the recordings are stored for safety.