In front of the disaster, five smart devices that can save more lives
Release date: 2015-04-29
The 8.1-magnitude earthquake that struck in Nepal on the 25th has killed more than a thousand people.
So far, seismologists have not found any anomalies to accurately predict large earthquakes. However, when an earthquake occurs, the speed difference between the seismic wave and the information propagation can be used to immediately issue an alarm when the destructive earthquake longitudinal wave reaches the ground, and grab a few seconds to several seconds before the earthquake transverse wave that causes the house collapses to arrive. Ten seconds of precious time. The data shows that if the warning can be 10 seconds ahead of time, the survival rate can be increased by 12%, 30 seconds in advance, the survival rate can be increased to 40%.
Early warning has become an important part of saving lives. In addition to the expensive earthquake warning systems led by the government, scientists are actively researching other intelligent devices that can be used for early warning to facilitate those who have not yet deployed large-scale early warning systems; drones and robots. More and more are being used for post-earthquake rescue. Titanium media editors have sorted out the following disaster-related equipment, and perhaps everyone should understand:
1. Smartphone: use crowdsourced GPS other data for early warning
Researchers from the US Geological Survey, NASA, and two universities said that a new technology has recently been developed that uses crowdsourced GPS and other data to detect ground movements that indicate the beginning of a major earthquake to quickly trigger Electronic alert. Researchers have found that GNSS (Global Navigation Satellite System) data from smartphones is particularly suitable for early detection of sudden misalignment of land along fault lines and warning of major earthquakes.
The study assumes that if a city's 5,000-person mobile phone can provide relatively accurate GPS and GNSS data, the system can detect and analyze it quickly enough to issue a warning before the earthquake. The limitation of this approach is that it requires a smartphone that is specially tailored for seismic monitoring, and that must meet the daily needs of people. The project is currently being tested in Chile, with separate smartphone sensors and sensors on the Chilean coastline.
In addition, two Italian seismologists Antonio Alessandro have also run tests on the iPhone to show how mobile phones can be used to detect earthquakes. And said that the sensor in the phone can eventually become an early warning system, so that people in need can get help faster.
AT&T's Emiliano Miluzzo added: "By turning a smart phone into a digital version of the Swiss Army Knife, we can simultaneously change the lives of residents in both developed and developing countries, because they need everything in their hands. Not only the user's problems can be immediately With answers, the government can also operate its infrastructure more efficiently."
2.Grillo: $59 low-cost earthquake alarm system
Mexico is one of the most earthquake-prone countries in the world. It also has its own earthquake warning system SASMEX, but the price of the SASMEX receiver is more than 300 US dollars, which is unbearable for many citizens. Last year, architect Andres Meira designed a new device called Grillo for $59, which is going to fill the gap in the SASMEX system. The device can receive and broadcast signals without delay, use sound and flash to alert, and change the battery once a year. The funds have been raised in the crowdfunding platform in Mexico, but the device does not cover all areas like the SASMEX sensor, so the development team hopes to launch an upgraded version that uses Wi-Fi and motion detectors to cover the entire region of Mexico.
Japan’s average annual earthquake is about 1,500 times, and its early warning system can be described as “all-in-oneâ€. Needless to say, even if the TV, radio, etc. are turned off, the TV station and the radio station can automatically activate the alarm by transmitting a control signal. Special earthquake warning signal receivers can also be purchased, and operators also have earthquake warning services. After the earthquake, mobile phones will issue huge "earthquakes, earthquakes" warnings, which are often more scary than those of small earthquakes. In addition, there are also “information-accessible†technologies and equipment for disabled people.
3. Robots and drones
You are my eye, take me to find the surviving people!
4. "Eye-eye" robot
Last August, the University of California developed a robot with the ability to “see through the eyeâ€, releasing wireless signals between the two robots, and observing the changes in the signal strength to observe objects inside the wall. When the robots surround a square concrete building, they are within range of sight, and they can calculate things inside the building and even identify humans. According to the team, the technology can be implemented by any wireless activation device that can be used for search and rescue operations after an earthquake disaster.
5 spherical drone
UAVs can be used in disaster relief sites, but the blades of their quadcopters can easily harm humans. For this, Swiss engineers have developed the world’s first collision-type drone, the “Gimballâ€, which is like a ball. The same rebound. For example, it can roll along a row of windows. Its rotating camera mount and HD camera are housed in a protective carbon fiber cage that maintains stability after a collision, ensuring a close-up image to the operator.
For the potential of drones at disaster relief sites, Professor Nick Jennings, the UK's chief scientific adviser, said that the UK has started testing drones to work with emergency teams. In the next few years, this will make the UK's emergency rescue even more Smooth and better.
Source: Titanium Media
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