DreamersGN Chapter 73 Two Scenes
Chapter 73 Two Scenes
mid-December.
Shaoguan, Guangdong: China Southern Power Grid's intelligent high-voltage line inspection test site.
This region is a completely different world from the palm plantations of Indonesia. The mountainous terrain of northern Guangdong is dramatically undulating, with 220 kV high-voltage power lines crossing the valleys and transmission towers standing on the ridges. In March, northern Guangdong still experiences a cold snap, and the wind direction in the mountains is unpredictable, with gusts jumping from level five to level seven in just a few seconds.
Even more challenging is the electromagnetic environment. The electromagnetic interference intensity near high-voltage power lines is dozens of times stronger than in ordinary environments. GPS and remote control signals are affected. Many drones begin to experience positioning drift or even lose control when flying near high-voltage power lines.
Lin Zhiqiang and four technicians from Nanwang Intelligent were present throughout the entire process. Su Chen came in person this time. He wanted to see firsthand how the flight control system performed under the most challenging conditions.
Zhang Lei was responsible for on-site technical support. Liu Yu was responsible for real-time monitoring of the obstacle avoidance system.
The test is divided into three phases.
Phase 1: Positioning stability near high-voltage lines.
After taking off, the drone flew towards the high-voltage power line. Su Chen stood in the command tent, staring at the monitoring screen. The RTK data began to fluctuate—at a distance of fifty meters from the power line, the positioning deviation jumped from the normal five centimeters to twelve centimeters.
But it did not continue to worsen.
The mountain-optimized RTK algorithm underwent specific filtering for electromagnetic interference during its initial testing in Shaoguan last year. Currently, the algorithm is automatically identifying and compensating for electromagnetic interference sources. The deviation is stable between ten and fifteen centimeters.
"Within 15 centimeters, it's acceptable for patrol scenarios," Lin Zhiqiang said, looking at the data, his tone calm but his eyes shining.
Su Chen nodded but didn't speak. Fifteen centimeters wasn't good enough. He would need to continue optimizing the filtering algorithm under electromagnetic conditions when he got back. But for now—it was sufficient.
Phase Two: Obstacle Avoidance Performance in Mountainous Terrain.
This was the part Liu Yu was most worried about after the Indonesian test. The obstacles in the palm grove were regular tree trunks, but the obstacles in the mountainous environment were bizarre and varied—rocks, bushes, metal components of iron towers, and hanging power lines. What's more troublesome is that the power lines appear very fine in binocular vision and are easily overlooked.
After testing in Indonesia, Liu Yu specifically enhanced the recognition algorithm for thin, linear obstacles. He simulated hundreds of imaging conditions for power transmission lines in a virtual environment and trained a dedicated thin-line detection module.
The drone began its patrol along the high-voltage power lines. Its speed was slow—three meters per second. But every meter was fraught with potential danger.
Twenty minutes later, the first round of patrol flights concluded. The obstacle avoidance system successfully identified all tower components, mountain protrusions, and trees. The detection rate for power transmission lines was 96%. One particularly thin section of ground wire was not detected under backlighting conditions, but the drone's safe distance setting was sufficiently large, and no actual danger was posed.
"Ninety-six percent." There was a hint of regret in Liu Yu's voice. "Four percentage points short."
"Engineer Liu," Lin Zhiqiang walked over, "do you know what the best result was for the other solutions we tested before?"
"How many?"
"Seventy-eight percent. Your proposal is eighteen percentage points higher than the best one."
Liu Yu paused for a moment, then smiled.
Phase 3: Flight stability under extreme wind conditions.
This stage wasn't pre-arranged—it was arranged by God.
At 2 PM, a sudden gust of wind swept through the mountains. The anemometer showed that the instantaneous wind speed reached level seven. The drone was conducting its third round of patrol flights.
Everyone tensed up. One of Lin Zhiqiang's technicians even reached out to press the emergency recall button.
However, no anomalies were observed in the flight data displayed on the screen. The drone's flight path deviated slightly but was immediately corrected. The flight controller's attitude control algorithm increased the motor response gain at the moment of sudden wind speed change, and the entire process took less than half a second.
"This wind resistance..." Lin Zhiqiang murmured, leaving the rest of the sentence unfinished.
Su Chen knew what this was. It was the quality enhancement from the system gain halo at work. With the same algorithm and the same hardware, Hongyuan's product was just a little bit more stable than similar solutions. This "little bit" was not easily perceptible under normal conditions, but under extreme conditions it would be amplified into a decisive difference.
The tests concluded at 4 PM.
Lin Zhiqiang pulled Su Chen aside. There was no one else around.
"President Su, to be honest, this flight control system has exceeded our expectations. Our internal evaluation standard is 70 points to pass, and 80 points to excellent. Your overall score—based on my preliminary calculations—is between 88 and 92."
Su Chen waited for him to continue.
"We are preparing to initiate the formal procurement process, following the group's approval channel. The procurement process at China Southern Power Grid is quite lengthy, potentially taking three to six months, but I will expedite it as soon as possible."
He reached out his hand. Su Chen grasped it.
On the high-speed train back to Shenzhen, Su Chen leaned back in his seat with his eyes closed. The southern mountains outside the window receded into the twilight.
Both scenarios were successfully completed. One was a palm oil plantation in Indonesia. The other was a high-voltage power line inspection in Shaoguan. Two completely different environments, two completely different challenges. One flight control system withstood both.
We now have two industrial-grade clients whose business has been validated in real-world scenarios.
It's time to see Shen Yumeng.