360° High Intensity Light Type A

360° High Intensity Light Type A

How to solve the interference problem in the aviation obstruction light monitoring system？

1. Interference in the installation place of the obstruction light(FLYLIGHT:High Intensity Type A factory,China High B obstruction light
,High Intensity Type B suppliers,Customized High Intensity Type B.)

First of all, due to the definition of its own existence, obstruction lights are used in environments with high-rise structures such as thermal power plants, chemical plants, radio and television towers, communication towers, airports, etc. The special features of this kind of external environment are that the coexisting equipment is complicated. , The electromagnetic interference is serious, and the on-site collection end of the fn fault monitoring system is inevitably affected by the distributed interference in these large environments. Secondly, the front-end machine and communication management machine of the monitoring system are installed next to the ten obstruction light equipment, and the equipment is used for power supply, and collection and transmission of equipment signals. Therefore, it is necessary to guard against interference problems caused by the equipment under test. Furthermore, local spontaneous interference will also be generated inside the front-end machine and the communication management machine, so while resisting the interference outside the system, it is also necessary to control the mutual influence between internal devices and circuits. These are all problems that need to be studied and resolved.

2. External environmental factors where the obstruction light monitoring system is located

The external environment of the obstruction light monitoring system includes natural problems such as lightning strikes and electromagnetic radiation in space, but also electromagnetic interference caused by high voltage, high frequency, and engines caused by artificial factors. For example, there are high-voltage interference signals of 50Hz power frequency cycle and N-order harmonics around power plants and high-voltage transmission towers, and electrical appliances in the power supply grid can also cause operating overvoltages. The typical environment of radio, television tower, and communication tower is the high-power, high-frequency, and radio frequency interference of the antenna at the top of the ten transmission tower.

Three, the signal interference of the obstruction light system itself.

The obstruction light system, which is the monitoring object of the monitoring system, is also a source of interference, from lamps, connecting cables to the control box will release varying degrees of interference. Automatic bulb-changing obstruction lights generally use relays to drive the lamp to switch, these devices will produce pulse interference, especially high-intensity obstruction lights generally use nitrogen discharge light source, the internal trigger pulse signal is generated by the thyristor device, and a control box is required to generate it. External trigger pulse signal, this control method will cause instantaneous discharge pulse interference, which directly causes electromagnetic interference in the entire path from the control box that generates the pulse signal, the cable that transmits the pulse signal to the lamp terminal that uses the pulse signal, the power line and the control line There are a large number of distributed capacitances. In this regard, the obstruction light system adopts measures such as power filter cable multi-core shielding and grounding to suppress and protect, and try to install the high-intensity control box near ten high-intensity lamps to shorten the interference propagation path.

4. The interference problem of the obstruction light system's acquisition end

The front-end computer in the collection end of the monitoring system is installed near the equipment under test, and at the same time, it is responsible for the task of directly interacting with the monitored object's circuit signals, so it is the focus of the field collection end to solve the interference problem. It can be seen from the composition and connection of the front-end machine that the power supply part and the signal detection circuit directly connected to the interference source of the obstruction light are the links that need to be paid attention to. In addition, the input and output interfaces, communication cables, PCB board units, etc. are also vulnerable The weak part of the disturbance. Although the GPRS module used by the communication management machine is a radio frequency transceiver unit, it is a mature industrial product and EMC is still good, so there is no need to study too much, and more attention can be paid to the vulnerable parts similar to the front-end machine.