The red light on the roof of the building flashed and flashed

High-altitude obstruction lights. Aviation obstruction lights mainly reflect the outline of the building, through which the pilot can judge the height and overall outline of the building, to achieve a warning role for aircraft and other aircraft, to prevent the aircraft route judgment error, to avoid crashing into high-rise buildings, similar to the role of the sea lighthouse.

The little red light that flashes on the roof of the building is the aviation obstruction light. Flashing 20 to 70 times per minute, it can provide an indication of high-altitude flight at night and prevent impact.

In the night, rain, fog and other weather conditions with low visibility, it flashes and illuminates to navigate the aircraft and prevent the aircraft from misjudging the route.

In general, buildings with a top of 45 meters above the ground are required to be installed. At the same time, in order to distinguish the lighting for other purposes, the navigation obstruction light is designed to be red. That's why we see red flashes on the rooftops of tall buildings at night.

Introduction

Below 45 meters above the ground, low-intensity aviation obstruction lights should be set up in the surrounding open places, and the red light should be always on.

Buildings and facilities above 45 meters above the ground and below 105 meters above the ground: the use of medium intensity B type aviation obstruction lights is a red flashing light, the flash frequency should be between 20-60 times per minute, and the effective light intensity is 2000cd 25%.

105 meters above the ground and 150 meters below the ground use medium intensity A type aviation obstruction lights; White flash, effective light intensity (2000-20000cd) 25%.

Hello, glad to answer for you. There is a red light flashing on the ceiling of the room, which is a smoke detector set up by the fire alarm system. It is used to prevent fires.

If the smoke in the room is too large, the smoke detector will collapse and the alarm will be called, and when the room will catch fire, the fire sprinkler will automatically start to sprinkle water to extinguish the fire, and protect the safety of each customer.

This is the fire alarm, which will send a signal to notify the fire department as soon as smoke is detected, and that light is the reporting system, which reports every 70 to 80 seconds.

With the increase of modern household fire and electricity consumption, the frequency of household fires is getting higher and higher. Once a home fire occurs, it is easy to have unfavorable factors such as untimely extinguishing, lack of fire extinguishing equipment, panic of people present, and slow escape, which eventually leads to major loss of life and property. **The characteristics and fire prevention countermeasures of household fires are of practical significance for preventing household fires and reducing fire losses.

Wiring requirements

The two buses must be made of copper core twisted pair, and away from strong current equipment and strong current lines, and the insulation resistance should be greater than 20m, otherwise the system is susceptible to space electromagnetic interference, and the lines are easy to crosstalk with each other, and the system cannot work normally!

The fire control room should be equipped with a grounding body, and the controller should be grounded firmly and reliably, otherwise the controller may make the chassis live because of poor grounding, endangering personal safety! The system may also reduce the anti-interference ability due to poor grounding of the controller, and the work will be unstable!

Outdoor wiring should be protected from waterproof and moisture, otherwise the wire may be insulated and reduced due to long-term moisture; The steel pipe should be laid through the steel pipe, and the steel pipe should be reliably grounded to improve the lightning resistance and anti-interference performance of the system.

Baby, you're from Mars.

There is a red light flashing on the top of the high-rise building, which is mainly used to warn aircraft to avoid high-rise buildings at night. The use of red warning lights, mainly bright colors, the visual effect is very good, the warning effect is also better, of course, there are also high-rise roof warning lights are white, but the brightness of the white warning lights is very high, which also has a good visual effect and warning effect.

The little red light that flashes on the roof of the building is an aviation obstruction light, which flashes 20 to 70 times per minute, which can provide an indication of high-altitude flight at night and prevent impact. Visibility at night, rain, fog, etc.

Under relatively low meteorological conditions, it flashes and illuminates to navigate the aircraft and prevent the aircraft from misjudging the route.

Aviation obstruction lights are high-rise buildings with a top height of more than 45 meters above its ground according to national standards.

Navigation lights must be installed. In order to distinguish it from general purpose lights, the beacon lights are not always on but flashing, and the flash frequency is not less than 20 times per minute and not higher than 70 times per minute.

The function of the aviation obstruction light is to show the outline of the structure, so that the aircraft operator can judge the height and contour of the obstacle, and play a warning role.