How Wide Is the Detection Coverage Area and How Many Detection Zones Does It Support?

When selecting a safety sensor for industrial or commercial automatic doors, two of the most critical performance factors are detection coverage area and the number of detection zones. These parameters directly determine how effectively the sensor can protect people, vehicles, and goods during door operation. The GUARDPRO Active Infrared Sensor is specifically designed to provide wide, precise, and configurable coverage for demanding door applications.

Wide Detection Coverage for Large Door Openings

The GUARDPRO sensor offers a broad detection coverage area, making it suitable for large industrial doors, high-speed rolling doors, and logistics entrances. The coverage width is designed to scale proportionally with the installation height, ensuring consistent safety performance even when mounted at elevated positions.

With a maximum mounting height of up to 4.7 meters, the sensor can effectively monitor a wide area beneath the door opening. This allows it to detect pedestrians, forklifts, pallets, and other obstacles across the full passage width, rather than focusing on a narrow central zone. As a result, blind spots are significantly reduced, and overall door safety is enhanced.

This wide-area coverage is especially important in high-traffic environments such as warehouses, factories, and loading docks, where both people and vehicles may pass through the doorway simultaneously.

High-Density Multi-Zone Detection Structure

In addition to wide coverage, the GUARDPRO sensor supports multiple independent detection zones, enabling highly accurate presence detection. The sensor utilizes a multi-beam active infrared array, forming a dense detection grid rather than relying on a single detection point.

Typically, the detection field is divided into 60 individual detection zones, arranged in a structured matrix. Each zone continuously monitors its assigned area, allowing the sensor to detect objects of different sizes and positions with high precision. This multi-zone design ensures that even small or stationary objects can be reliably detected.

Independent Zone Configuration for Greater Flexibility

A key advantage of the GUARDPRO sensor is its ability to configure detection zones independently. Installers can enable, disable, or adjust specific zones to match the actual door width, installation environment, or application requirements.

For example:

Zones near walls or door frames can be deactivated to prevent false triggering.

Central zones can be prioritized for pedestrian safety.

Detection fields can be optimized for forklift or pallet traffic.

This level of flexibility allows the sensor to adapt to a wide range of door sizes and site conditions, improving both safety and operational efficiency.

Enhanced Safety Through Zone-Based Logic

The multi-zone structure also enables advanced safety logic. If multiple zones are triggered simultaneously, the sensor can immediately signal the door controller to stop or reverse door movement. This intelligent response mechanism helps prevent collisions, pinching incidents, and damage to goods or equipment.

Compared with traditional single-beam sensors, this zone-based approach provides a much higher level of reliability and compliance with modern industrial safety expectations.

Conclusion

The GUARDPRO Active Infrared Sensor combines wide detection coverage with high-density, multi-zone sensing to deliver robust safety protection for automatic door systems. With coverage that scales up to high mounting heights and support for dozens of independent detection zones, it ensures comprehensive monitoring of door passage areas. This design makes GUARDPRO an ideal solution for industrial, logistics, and commercial environments where safety, accuracy, and flexibility are essential.