(Civil Aviation, Air Force, Electric Power)

　　The Blue Light Intelligent Bird-Repellent System, jointly developed by the Air Force Flight Field Support Equipment Repair Plant of the Eastern Theater Command, Dr. Yang Rong of the Wuhu Air Base, and Anhui Bird-Defense and Bird-Repellent Equipment Technology Co., Ltd., fills a critical gap in the Air Force’s nighttime bird-control capabilities. Featuring stable performance, IP65-rated water and dust resistance, and lightning protection, the system also boasts enhanced endurance.

　　I. Product Structure

　　The Blue-Light Intelligent Bird-Repellent System comprises a beam emitter, a dual-mode pan-tilt unit, a human–machine interface control terminal, a power supply system, and a remote-control device. The beam emitter serves as the system’s core emission technology module, projecting a blue-light beam to deter birds within the designated area; the dual-mode pan-tilt unit is an automated rotation system that offers both manual and automatic modes to maximize effectiveness; the human–machine interface control terminal functions as the system’s central control platform, operated via a handheld touch screen, allowing adjustment of all system parameters; the power supply system provides electrical power to the entire unit; and the remote-control device is a remote-control module that enables operation from any location within a 1,000-meter range.

　　Figure 1: Equipment System Architecture

　　II. Operating Principle

　　Once the angle and strobe pattern are set, the BlueLight Intelligent Bird-Repellent System can perform 360-degree, dead-zone-free scanning of areas around the airport where bird activity is particularly severe. During operation, the system repeatedly cycles through the pre-adjusted angles, with the strobe patterns switching automatically according to a preset timing sequence. In response to sudden bird swarm incidents, the system can be switched to manual mode via remote control and directed to rotate toward the designated area. At night, the system’s effective range extends to a radius of no less than 500 meters, emitting a columnar beam of light that sweeps across the entire airport area—its effectiveness is especially pronounced against heron species. Multiple international conferences have concluded that blue light within a specific lumen range exhibits the optimal aversive effect on birds, with no sign of habituation.

　　III. Performance Parameters

　　1. Beam color: blue;

　　2. Luminous flux: not less than 5000 lm;

　　3. Horizontal rotation range: 0~350°;

　　4. Pitch range: -15° to 90°;

　　5. Horizontal rotation speed: 350°/20 seconds;

　　6. Pitch and yaw rotation speed: 90°/15 seconds;

　　7. Lighting modes: steady illumination / strobe illumination;

　　8. Operating modes: automatic operation/manual control;

　　9. Effective range: 500–1000 m:

　　10. Protection Ratings: IP65 (dustproof and waterproof), lightning protection, drop resistance, and pressure resistance.

　　11. Specifications: 200 × 60 × 40 (height × length × width, cm)

　　12. Lamp panel diameter: 50 cm

　　13. Ambient temperature: -20°C to +55°C

　　14. Lighting conditions: Effective below 15,000 lux

　　15. Operating voltage: AC 220 V, 50–60 Hz

　　16. Equipment power: 600W

　　Figure 2: Front view of the device

　　IV. Innovative Highlights

　　This system overcomes the longstanding shortage of effective nighttime bird-deterrence methods, thereby safeguarding aviation safety during nighttime operations in China. Its development has replaced earlier laser-based solutions, which pose significant ocular hazards to flight crews and air-traffic-control personnel, potentially causing temporary blindness or, in severe cases, permanent blindness. In contrast, blue-light technology presents no such risk. Moreover, conventional bird-repelling devices, such as acoustic cannons, are highly susceptible to habituation by resident bird populations, whereas blue-light systems do not suffer from this drawback. The ability to switch between steady illumination and flashing modes further enhances their deterrent effect: at night, the appearance of a bright, beam-like light sweeping across the airspace triggers an acute sense of threat in birds, compelling them to flee. It is well known that airport sites are often located in areas with dense residential populations; yet sound-based and acoustic bird-deterrent methods are entirely impractical for nighttime use. By contrast, blue-light systems operate in a completely silent mode, ensuring that they do not disturb residents’ nighttime sleep. This underscores the principle that, in the context of Air Force operations, the military serves the people, and the people, in turn, support the military.

　　V. Application Status

　　This system has undergone demonstration and validation of nighttime bird-deterrence technology within airport environments under real-world conditions at multiple airports, including Shantou, Wuhu, Jianqiao, Liancheng, and others.