Project Introduction

As the lead engineer responsible for IoT solutions, I participated in an AGV transformation project at Qingdao Port in June 2023. The port, handling over 20 million TEUs annually, planned to upgrade 50 container transport vehicles with autonomous driving systems using SV900 vehicle gateways.

Initial Assessment

Upon arrival at the site, we encountered several critical challenges. The port environment was complex, with towering metal containers significantly affecting wireless signal transmission. Additionally, the coastal location’s high humidity and frequent fog posed serious demands on equipment protection.After two weeks of on-site investigation, we identified network communication as the primary challenge. AGVs required real-time communication with the control center, where any latency or interruption could potentially cause safety incidents. Traditional 4G networks proved inadequate in this environment, frequently experiencing dead zones and high latency.

Solution Selection

Given the site conditions, we opted for the SV900-00 dual 5G vehicle gateway. This decision was based on several key factors:First, the dual 5G module design provided redundancy protection. One module connected to the port’s 5G private network, while the other connected to the public 5G network, ensuring uninterrupted communication. Second, the device’s M12 aviation connectors and IP40 protection rating were well-suited for harsh port environments. Most importantly, the SV900’s operating temperature range of -35°C to +75°C fully met outdoor environmental requirements.

Implementation Process

During installation, we encountered a significant challenge. Initial antenna placement on the AGV roof resulted in significant signal degradation when vehicles passed through container storage areas.After extensive testing, we implemented a “four-corner distribution” antenna solution. By installing 5G antennas at each corner of the AGV roof and utilizing antenna diversity technology, we effectively eliminated signal dead zones. The main unit was installed in the AGV control box with natural cooling.

Performance Optimization

During the first two weeks of operation, we faced unexpected issues. Network switching was particularly problematic. When AGVs moved through areas between private and public network coverage, frequent network switching caused communication instability.By adjusting network switching parameters and setting appropriate signal strength thresholds and switching delays, we optimized the switching time to under 200ms. Additionally, we utilized SV900’s local caching capability to ensure no critical data loss during switches.

Results

After three months of operation, the system demonstrated excellent performance:

• Control command latency consistently under 15ms
• Smooth video monitoring at 1080P@25fps
• Network connectivity reliability reaching 99.99%
• Equipment temperature maintaining within normal range

Most notably, the transformed AGVs showed a 40% increase in container handling efficiency while eliminating human operation-related accidents.

Vehicle Gateway Implementation Insights

This project demonstrated that in complex industrial environments, equipment reliability supersedes functionality. The successful implementation of the SV900 vehicle gateway was primarily due to its robust hardware design and flexible configuration capabilities. However, proper deployment strategies and continuous optimization were equally crucial.Looking ahead, we plan to expand this vehicle gateway solution to other ports, confident that with further 5G network improvements, AGV applications will become increasingly widespread.