System Description

The CLD02 Trailer-Mounted Photometric Measurement Equipment for AGL is developed based on patented technologies with fully independent intellectual property rights. It integrates advanced features such as dynamic light intensity measurement, 3D computer vision-based spatial analysis, and linear CCD scanning and correction technology. Compliant with ICAO Annex 14 standards, the system enables real-time, online measurement of light intensity for airfield lighting equipment, significantly improving inspection efficiency and measurement accuracy. It ensures the proper operation of visual navigation aids and meets the performance requirements for airfield lighting systems in support of aircraft arrivals and departures. The system imposes no requirements on the towing vehicle, features user-friendly operation, and offers stable and reliable performance. It is one of the essential intelligent inspection tools for airport lighting stations across all airport categories.

Main Technical Parameters

Components of the Trailer-Mounted Photometric System for Airfield Lighting Equipment

Main Features of the System

High-Precision Dynamic Illuminance Measurement

The system uses a full-range differential PIN-PD illuminance transmitter with fast response to accurately measure illuminance values that match human visual perception, as per the CIE curve, after V(λ) correction. It incorporates a 16-channel self-calibrating programmable gain signal conditioning circuit and a variable-range 16-bit high-speed, high-precision A/D conversion circuit, enabling continuous automatic data acquisition. This ensures the system's adaptability to different airfield lighting intensity measurements while maintaining long-term stable and highly accurate measurements.

Linear Array CCD Scanning Airfield Light Positioning Technology

The system utilizes a high-resolution, high-speed linear array CCD (2K resolution, 18kHz scanning speed). It quickly detects the moment the inspection vehicle passes over the airfield lighting and the lateral offset distance. This method eliminates the measurement errors caused by discrete sampling and phase lag associated with conventional 11-channel photoelectric detection. It reliably corrects the accumulated measurement errors and lateral displacement of the distance measuring device, thereby improving the uncertainty parameters of the airfield light intensity measurement.

Satellite-Based Automatic Positioning Technology

The system is equipped with satellite-based automatic positioning technology, offering sub-meter accuracy. In addition to seamless integration with the airport dispatch and command system, it also features automatic identification of the runway number under inspection and the initial airfield light number being measured.

Self-Diagnosis and Automatic Correction Compensation Function with Light History Trend Data Management Technology

The system is equipped with a self-diagnosis function for the sensor and data acquisition system's zero position, ensuring the stability of the sensor and acquisition system. The acquisition system also features a power-on connectivity self-test function, guaranteeing the reliability of the equipment's normal operation. The illuminance measurement system includes cosine correction and testing and correction for stray light (such as skylight and environmental stray light), ensuring the system's adaptability to the environment and consistency of the test data. The system supports historical trend storage, query, playback, and printing functions for airfield lighting equipment. It can generate electronic light intensity inspection reports that include the identification numbers and location information of non-compliant lights. The system also allows manual entry of reinspection or replacement measurement data, and provides marking functions to indicate the reinspection and replacement status of each light.

Independently Developed Professional Detection Software

The light intensity detection software provided with this system is independently developed by our company. All operation interfaces and labels are in Simplified Chinese. The software determines whether the light fixtures meet the required intensity standards based on the latest version of the "Technical Standards for Civil Airport Flight Zones" for light fixtures. When the "Technical Standards for Civil Airport Flight Zones" are updated or new related standards are issued, the embedded criteria for judgment can be updated. Additionally, the software functionality can be adjusted based on the customer's specific usage requirements.

Optimized Sensor Strip Bracket Structure

The sensor strip mounting bracket employs a split-type fixing/adjusting bracket. It incorporates features such as a quick-mount mechanism, offset adjustment technology, fine horizontal alignment, flip-lock mechanism, integrated structure for measuring both inner and outer sides of edge lights, and a quick-locking extension rod for the edge light measurement suspension system. These design enhancements enable convenient transport, rapid assembly and disassembly, precise alignment, and stable measurement during operation.