Power line anti - external damage: Radar - vision fusion solves false alarms and missed alarms

With the accelerating pace of urban and rural construction, the transition from spring to summer is the peak season for various construction projects. However, for power grid maintenance personnel, this is a nerve-wracking period. Various tower cranes, excavators, and pump trucks frequently operate near transmission line corridors, and the slightest carelessness can lead to serious external damage accidents such as contact with or breakage of power lines.

Protecting power lines from external damage has always been a global challenge for power grid maintenance. In the past, many power companies installed numerous visual monitoring cameras on transmission towers, attempting to monitor the entire power line corridor with "long-range eyes." Undeniably, image monitoring has improved maintenance efficiency, but as its application has deepened, maintenance personnel have discovered a fatal problem: traditional pure video monitoring frequently misses or even false alarms at critical moments. What exactly is going on? And how can modern power grids overcome this challenge?

The "fatal flaw" of traditional video surveillance: Why is it always so difficult to get a clear picture?

In the process of building a centralized monitoring mode for remote power transmission, visualization devices that rely solely on optical lenses have revealed many insurmountable physical defects:

Highly affected by severe weather (dependent on the weather): Traditional surveillance cameras rely on light for imaging. Once they encounter severe weather such as rain, snow, ice, high temperatures, sandstorms, or dense fog, the imaging capability of the lens will drop drastically. Often, in the most accident-prone severe weather, the surveillance picture is blurry and practically useless.

The visual illusion of "objects appearing larger when closer and smaller when farther away" (lack of depth perception): This is the most difficult hurdle to overcome in optical imaging. In two-dimensional video footage, due to the lack of spatial depth data, the system struggles to accurately determine the distance between the crane and the high-voltage line. The system may issue numerous false alarms even when the crane is clearly beyond a safe distance; conversely, sometimes the excavator's long arm is already close to the power line, but the system fails to react due to the angle (missed alarm).

Lack of quantitative detection methods for potential hazards: In complex scenarios such as tree growth and the passage of oversized vehicles, pure video surveillance can only provide a qualitative judgment of "present or absent," and cannot provide quantitative data such as "how many meters away." Without accurate distance measurement, it is impossible to delineate the precise alarm area.

The solution: "Radar + Video" multi-source fusion technology becomes the new standard.

Since simple "eyes" (video surveillance) can produce illusions and are affected by the weather, wouldn't equipping them with a precise "rangefinder" perfectly solve the problem?

Against this backdrop, millimeter-wave radar + AI video fusion technology has emerged, becoming an industry benchmark for the next generation of power line protection against external damage. By actively emitting electromagnetic waves for detection, radar can not only ignore wind, frost, rain, and snow, but also accurately measure the distance, speed, and angle of target objects, giving the flat video image realistic "depth information".

Eliminating Blind Spots: The DH-WPS100-JG3 Online Damage Prevention Monitoring Device Makes a Powerful Debut

Millimeter-wave radar online monitoring device for external damage prevention of power transmission lines

Addressing the aforementioned industry pain points, our newly launched millimeter-wave radar online monitoring device for external damage prevention of transmission lines (model: DH-WPS100-JG3) is the ultimate weapon tailored to solve the problem of "missed reports and false reports".

This device is more than just a simple camera; it's an intelligent terminal integrating short-wavelength millimeter-wave radar (76~81GHz), AI edge computing, and a starlight-level ultra-high-definition camera. Compared to ordinary surveillance systems on the market, it boasts a game-changing advantage:

Imbuing images with "depth information" completely eliminates false alarms: Through radar ranging technology, the DH-WPS100-JG3 can accurately obtain the absolute distance between external damage hazards such as cranes and excavators and the power lines. The system can designate a 30m radius around the power line (hazard distance is configurable) as the core monitoring zone. Only when the engineering vehicle actually enters this danger distance will the camera be activated to capture an image and issue an alarm, significantly reducing invalid false alarms.

Radar-Vision Fusion for Precise All-Weather Perception: The device breaks through the limitations of traditional vision's "near is larger, far is smaller" principle. Through original coordinate transformation technology, it precisely pairs radar point cloud data with visualized image hazards (including calibration of the tower-line system position and the relative position of the camera), enabling uninterrupted distance tracking even when the crane's line of sight is partially obstructed.

High-frequency monitoring ensures no potential hazard is overlooked: The system supports high-frequency monitoring at the 2-minute level by default. When a moving engineering vehicle is detected in the passageway, the radar and camera work together in real time to quickly identify and upload on-site images that overlay "radar alarm status" and "hazard location information," providing the most intuitive and accurate decision-making basis for back-end maintenance personnel.

Every external damage to power lines results not only in enormous repair costs but also in severe social consequences such as widespread power outages. Given the increasingly complex construction environment, replacing outdated pure video surveillance with intelligent external damage prevention systems that integrate radar and video surveillance is an inevitable trend.