, this concept is actually an important communication method used in emergency situations, in order to convey some necessary information to the public in a timely manner, such as disasters or public crises.
First of all, the role this thing plays is extremely important. When a major situation occurs – such as an earthquake or a fire – we can quickly inform the public on how to respond. It allows people to get instructions as quickly as possible so that they can take corrective actions, such as quickly evacuating the scene and a series of actions that are critical to people's life and death. For example, if a forest fire breaks out, the surrounding residents can be informed by broadcast of specific evacuation routes and safe exits.
Furthermore, the following two points can also stabilize people’s panic at the social level. It lets people know that someone is dealing with urgent matters and knows exactly what is going on. People will not flee blindly or cause greater chaos. Think about it, if there is no news and people are not allowed to speculate, the level of confusion can be imagined.
In terms of technical characteristics, it must have ultra-high stability. Even if there is a power grid failure or other situation, it must have a backup power supply or emergency communication means to continue broadcasting. In addition, the coverage must be very wide, after all, to ensure that it can be heard in a large area. Just like in the case of an earthquake in a mountainous area, the folk in the deep ravine can also know the broadcast content, thereby effectively avoiding more serious casualties.
It has to be targeted. If there is a leak in a chemical plant, the content of the instructions broadcast to the nearby office area must be different from the instructions broadcast to nearby residential residents, right? Depending on the audience, appropriate and effective instruction messages need to be conveyed.
Let’s talk about its coverage again.
Generally, base stations are used to transmit signals to do this. Many base stations are set up in various cities, or in common areas such as villages and towns. In this way, large area coverage can be achieved. It's a bit like the base stations are woven together to form a huge communication information network – so huge that you can hardly imagine it – spreading the signals throughout all important areas like no omissions.
In addition to traditional methods, online multimedia also occupies a certain proportion in the field. In this era, the popularity of the Internet is quite high.
The following questions, answers and explanations can help you understand better.
Question 1: Is it only broadcast in language?
Not always, sometimes graphic content has to be released. Just like a simple tutorial introducing a certain kind of protection, whether it has text or images, sometimes this is much more intuitive and clear than just talking in the air, you will understand – so multiple audio-visual combinations are more perfect!
Question 2: How to ensure that everyone can hear the emergency broadcast?
On the one hand, large-area coverage is already a basic practice; on the other hand, there are also some special places – such as shopping malls, which have their own internal broadcast systems that can receive and broadcast this message.
Question 3: How to verify the quality of broadcast content?
There must be a strict review and verification process for broadcast content! The reliability must be confirmed before broadcasting! Just like some specific accident handling instructions, relevant experts must first evaluate whether they make sense or not. This logic!
You ask me about the overall situation. I think this is definitely an indispensable and critical part of the critical moment! When there is no sudden emergency, the people are like headless flies. The God is very powerful and has obvious value in quickly conveying instructions and messages.
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