At 23:59 on December 18, 6Level 2**. Many users in the affected areas have received the ** warning prompted by the mobile phone, and the ** warning function of the mobile phone has once again appeared on the hot search list.
Whenever a disaster occurs in an area, the early warning function of the mobile phone will attract much attention, so how is the early warning function realized?How should users turn on the **warning function of the phone??
The reporter learned that most of the mobile phones currently on sale in China have built-in early warning functions, which are mainly provided by third-party monitoring and early warning institutions and mobile phone manufacturers, and users can operate according to the following steps:
Huawei Honor: [Settings] - [Security] - [Emergency Warning Notification] - [Early Warning].
Xiaomi: [Mobile Manager] - [Family Care] - [Early Warning].
OPPO OnePlus Realme: [Settings] - [Security] - [SOS Emergency Contact] - [Natural Disaster Alert] - [Alert].
vivo IQ00: [Weather APP] - [Settings] - [Warning] - [Enable**Alert Service].
However, Samsung and Apple mobile phone users need to ** relevant apps and authorize the corresponding permissions to obtain the same function.
According to the popular science of Chengdu High-tech Disaster Reduction Research Institute, from the principle point of view, the first wave is divided into longitudinal wave and transverse wave, the former has fast propagation speed and small destructive power, and the latter has slow propagation speed and large destructive power. The basic principle of early warning is to take advantage of the time difference between the two to issue an alert. After receiving the longitudinal wave, the observation instrument close to the hypocenter will continuously estimate the parameters and their effects in real time. When the epicenter occurs, the monitor quickly evaluates the parameters by obtaining and analyzing the data of the early warning and monitoring stations deployed in various places in real time. If it is found, the monitoring agency will send an early warning signal to the mobile phones of the people around the epicenter, and for users who have not yet been affected, the background system of the detection agency can inform the epicenter, warning magnitude, warning time, estimated intensity and other early warning information in advance through mobile phone APP or SMS with pop-up windows and alarm sounds.
Normally, the early warning can be issued to the user within a few seconds to tens of seconds before it reaches the user, and in 2021, 6Level 0**, the China ** early warning network jointly built by the China ** Bureau and the Chengdu High-tech Disaster Reduction Institute (Disaster Reduction Institute) issued an early warning to Chengdu 49 seconds in advance;A warning was issued to Chongqing Municipality 31 seconds in advanceAn early warning was issued to Luzhou City 6 seconds in advance, and there were also users who received the ** warning nearly two minutes in advance.
According to the content released by the Chengdu High-tech Disaster Reduction Research Institute, when the intensity is estimated to be 4-6 degrees, furniture, chandeliers, etc. may be toppled, and people need to take evacuation measures;When the estimated intensity exceeds 6 degrees, houses in rural areas may be damaged, and people need to take evacuation measures. According to the suggestion, people who receive the warning time of about 3 seconds should take refuge near the nearest solid object, such as under the table, next to the bed, etc.;For people who receive the warning for about 10 seconds, residents on the first and second floors can be evacuated outside the building urgentlyFor people who receive the warning for about 20 seconds, residents on low floors can evacuate to the outside of the building urgently, and residents on high floors should take shelter nearby.
Source: Ministry of Emergency Management.
The reporter noticed that after the occurrence in the Jishishan area of Gansu Province, some Apple users issued a short ** complaining that 7 Apple mobile phones did not receive ** warning. In this regard, Apple's customer service replied on the 19th that **early warning needs to be applied with the local**, and the (Apple) mobile phone alone does not have the function of testing to **. It is recommended that the third-party early warning app for the time being, the follow-up system engineer will collect customer needs, and the follow-up engineering department will study these functions.
The reporter called the Gansu Provincial ** Bureau on the 19th, and the operator told the reporter that some mobile phones equipped with Android systems were selected by third-party ** monitoring agencies, and are currently promoting a ** early warning application from the national level, which has been launched in Sichuan for a pilot project. Once the application is officially launched, it will consider a variety of system support, and there will be no prompts on existing mobile phones, and some without prompts.
After the reporter's inquiry, it was found that China's **Taiwan Network has now launched the "** Express" APP, which can support Android, iOS and Microsoft WM three mobile phone operating systems at the same time. The app is available for free in apps** on all system platforms.
*: CBN).