Navigation-aid light loop monitoring system and method, and related device and equipment

Abstract

The invention relates to a navigation-aid light loop monitoring system and method, an insulation resistor fault positioning device, a signal coupling device and an isolation transformer device. The signal coupling device is applied to an airport aid-to-navigation lamp monitoring system and corresponds to lamps in an aid-to-navigation lamp loop one by one, and the signal coupling device comprises a first signal coupling module which is used for power line carrier signal coupling between a cable of the aid-to-navigation lamp loop and a single lamp control module of the corresponding lamp; the second signal coupling module is used for coupling power line carrier signals on the cable; and the electric signal sampling module is connected in parallel with the second signal coupling module and is used for sampling the electric signal on the cable and outputting the sampled electric signal to the single lamp control module. The navigation-aid lamp monitoring system comprises the signal coupling device, and aims to realize independent control of each lamp in a navigation-aid lamp light loop and realize insulation resistance fault positioning and monitoring of the navigation-aid lamp loop.

Description

technical field [0001] The invention relates to the technical field of airport navigation light monitoring, in particular to a navigation light circuit monitoring system, method, insulation resistance fault location equipment, signal coupling device, and isolation transformer equipment. Background technique [0002] As a necessary visual aid system to ensure the normal take-off, landing and taxiing of aircraft at night, low visibility or other complex operating conditions, the airport navigation lighting system is directly related to the safety of aircraft take-off and landing, and is the key to ensuring the safe operation of the airport. one of the important infrastructures. [0003] The most typical failure of the airport navigation lighting system is single-point grounding or multi-point grounding in the navigation lighting circuit. When there is multi-point grounding in the navigation aid lighting circuit, the brightness of the lamps between the two grounding points wil...

AI Technical Summary

Problems solved by technology

Power line carrier communication is divided into narrow-band power carrier technology and broadband power carrier technology according to its communication frequency band. Narrow-band power carrier technology can realize data transmission without adding additional equipment because its signal can cross the isolation transformer of the navigation light circuit. The influence of factors such as the time-varying nature of the transmission medium of the navigation lighting circuit, the aging of the isolation transformer, and the small extension of its bandwidth cannot meet the needs of lighting guidance, which limits its further promotion and application; broadband power carrier can effectively solve the problem of narrowband power carrier Disadvantages, but using broadband power line carrier communication technology, it is usually necessary to add a signal coupling unit to the navigation light circuit to realize the transmission of power carrier signals

As a newly added circuit breakpoint, the signal coupling unit increases the risk of a decrease in the insulation resistance of the navigation light circuit; in addition, the failure of the signal coupling unit itself will also lead to a decrease in the insulation resistance of the navigation light circuit

Therefore, for the above-mentioned scheme based on broadband power line carrier communication technology to realize single lamp control, there is not only the problem that the fault point cannot be located, but also the risk of fault is increased, which increases the workload and cost of airport maintenance.

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