Life detectors, satellite phones, one less

In the crucial period, various types of domestic emergency rescue equipment were urgently booked and put into earthquake relief. (Author: Our reporter Zhao Yanling / text)
At 10:00 am on May 17th, the president of Beijing Zhongtai Technology Development Co., Ltd. (hereinafter referred to as "Zhongtaitong") was still working overtime. Wenchuan County map was spread out on his office coffee table. Some of the traffic lines from the hardest hit towns and from Chengdu to Wenchuan were clearly outlined by him. At this time, because Li County had a strong aftershock, the lifeline that had just opened the way to transport relief supplies to the epicenter was once again blocked, and he seemed anxious. Although it is a rest day, employees in the company are busy sending emergency rescue equipment to fire and naval departments. During this period, Ming Shouyuan often contacted 11 colleagues from the frontline of the Wenchuan Earthquake by phone, the Internet, and kept abreast of the rescue situation on the front line. The 11 people drove the "Moving China" satellite communications system vehicle the next day after the earthquake and carried life detectors and radio equipment to rush to the earthquake line to provide communication and search and rescue support for earthquake relief.

Here, it is a small earthquake relief command center.

It is understood that China Telecom is an integrated enterprise integrating research, development, production and sales in areas such as satellite communications, anti-terrorism, rescue and emergency communications. At present, the company's rescue equipment is almost subject to subscription. It is said that the rescue equipment of other emergency rescue equipment manufacturers and sellers is also registered in the register, and it is not allowed to sell in the near future, waiting for the arrangement of relevant departments.

The reporter learned from the interview that the current emergency rescue equipment of the Chinese rescue department is insufficient, and that most of the emergency rescue equipment used is imported, and domestically-related equipment and technology levels need to be improved.

Life detectors played a major role The 8th magnitude earthquake struck Wenchuan in an instant and almost flattened the ground. There were ruined walls everywhere, and most people were forced to escape under the rubble. According to statistics, tens of thousands of people were buried in Sichuan due to the earthquake disaster. How to quickly rescue the life that was buried under the rubble has become the focal point and the difficulty of disaster relief. In many places, due to traffic disruption, large-scale rescue machines are difficult to enter the rescue line for a short time, and over time, they are getting weaker and weaker. In order to promptly discover the signs of life under the rubble, front-line rescue workers are widely using a high-tech life-saving instrument, the "life detector."

Within a day or two after the earthquake, the trapped people in the rubble were able to call for help. Rescue workers started rescue and rescue operations. However, two or three days later, the trapped people had no strength to call for help, and the search was more difficult, especially deep-buried. The trapped people below a few meters must rely on technical tools.

It is understood that most of the firefighting, armed police, earthquake rescue systems, and local government rescue agencies that are currently on the front line of the rescue all carry life detectors. The equipment production and distributors also carried life detectors to the earthquake scene and joined the search and rescue ranks.

On May 12, when the news of the Wenchuan Earthquake came, Mingshouyuan immediately contacted the company's employees with the National Emergency Management Office, Fire and Rescue Center, and the Armed Police. They asked for assistance in the disaster area and were quickly approved. Afterwards, China Taitong prepared rescue equipment overnight: wireless communication systems, radio stations, life detectors and other emergency rescue equipment. The next day they rushed to the disaster relief line. They opened a total of four rescue vehicles, one of which is currently the world's most advanced "moving through" emergency communications system command vehicle, which has provided communication security for the relay of the Chinese Olympic torch Mount Everest.

In this catastrophic natural disaster, the life detector unveiled its mystery. It is also such a small instrument that saved countless lives in the Wenchuan earthquake.

According to Ming Shouyuan, Life Detector is the most advanced search and rescue and detection instrument in the world. There are three types of life detectors used in the rescue work of Wenchuan Earthquake: optical life detector, thermal infrared life. Detector and sonic life detector.

It is understood that optical life detector commonly known as "snake eyes", the use of light reflection for life detection. The main body of the instrument is very flexible and can twist freely in the rubble. There are small probes in front of the instrument that can penetrate into the tiny gap detection. Similar to the camera equipment, the information is sent back. The rescue team can use the viewer to clearly see the depth of the rubble. The thermal infrared life detector has a night vision function. Its principle is to judge different targets by sensing the temperature difference, so it can work as usual in the dark. The more advanced sonic life detector can search for weak sounds. Even if the buried person is trapped under a fairly solid large-scale cement floor, the detector can feel it as long as the heart still has a slight vibration. It mainly finds the location of survivors by sensing the electric field (generated by the heart) generated by ultra-low-frequency waves emitted by the human body. According to experts, the ultra-low frequency electric fields emitted by the human body can penetrate reinforced concrete walls, steel plates, planks, and even water. Therefore, as long as there are signs of life, whether they are awake, unconscious, trapped in rubble, or hiding in containers, they are all available. Life detector found it in the shortest time.