A black box in the crashed passenger plane MU5735 of China Eastern Airlines has finally been found. We hope to find the cause of the accident as soon as possible so that the tragedy will not happen again.
Why find the black box, you can know the cause of the accident?
The full name of the black box is the flight record information system, which is a dedicated electronic recording device onboard.
Although the black box has the word “black” in its name, the black box is not black. In order to facilitate the retrieval of the black box, generally speaking, the black box will be mainly in bright colors.
The reason why it is called the black box is that the original black box was indeed black, but it was not easy to find after the black was dropped, so it was changed to a bright color.
It consists of a flight data recorder (FDR) and cockpit voice recorder (CVR).
The flight data recorder records detailed flight data, including changes in heading, altitude, speed, acceleration, etc. The flight process of the accident can be reproduced through data decoding and analysis.
The cockpit voice recorder records the sound in the cabin, including the pilot’s dialogue content, voice features, etc., and can analyze the working state of the aircraft system and environmental changes.
By analyzing this data, the cause of the accident can be found.
Is the black box easily damaged?
On the contrary, the black box is extremely sturdy, resistant to fire, blisters, and falls, and can also transmit signals for easy retrieval.
In the vast majority of cases, after an air crash, the black box can be recovered in good condition.
On May 7, 2002, a passenger plane of China Northern Airlines crashed in the waters of Dalian, and its black box was salvaged from the sea.
There are two main signals sent by the black box, one is an automatic signal generator, which is convenient for air and ground search; the other is an ultrasonic underwater positioning beacon, which is convenient for underwater salvage.
If the black box on China Eastern Airlines MU5735 is damaged, it is impossible to imagine how tragic the situation was at that time. Such a high fall, so tragic, I really hope that such an accident will not happen again, and I also hope that the damage to the data is not serious, and the truth of the accident can be found as soon as possible.
Since the black box can help the crashed plane find the cause of the accident, can it also be used in our more commonly used car transportation?
Like the Tesla “brake failure” incident that has been making a lot of noise before, if there is a “black box”, the cause of the accident will be clear at a glance.
Don’t worry, car “black boxes” really exist.
In 2021, the country updated a national standard, GB 7258–2017 “Technical Conditions for Safety of Motor Vehicle Operation” No. 2 Amendment Sheet, starting from January 1, 2022, all new passenger vehicles are required to install automobiles. Event Data Recording System (EDR).
This EDR is equivalent to the black box of the car.
The recorded data is divided into two levels: A-level and B-level data.
A-level data is the most basic data of the car, including the speed, acceleration, braking status, pedal position, and other information of the car.
The B-level data contains all the information of the A-level, as well as the steering angle, gear position, accurate time of the accident, various states of the airbags, etc., which can analyze the cause of the accident more accurately.
The mandatory EDR installation from this year only needs to meet the A-level data, and the B-level data will not be until 2024.
Although there is still a period of time, it is still within sight, and the most basic A-level data is also available, which means that there is finally a channel for querying EDR in China.
Although EDR has only been required for cars since this year, many cars have already been equipped with EDR before, such as Tesla.
However, due to the fact that there was no mandatory installation of EDR in China before, and Tesla’s “brake failure” incident, Tesla did not provide EDR data in time, because only North America can access EDR records. After that, under the pressure of public opinion, Tesla Just gave not very complete data.
The implementation of the new national standard may make this situation no longer happen.
The advancement of science and technology has brought about the innovation of means of transportation, and at the same time, the probability of traffic accidents is also increasing day by day. To reduce traffic accidents, it is necessary to continuously improve the laws and regulations, and relevant companies need to create safer means of transportation.
It is hard to say whether the addition of the “black box” can reduce the occurrence of traffic accidents, but at least it can prevent the truth after the accident from being buried, and it can also make relevant companies feel jealous, and try their best to keep the car or the plane. All in all, it can make the vehicle safer.
