Ya'an earthquake injured tens of thousands of people, how to reduce the disaster

At 8:02 on April 20, a magnitude 7.0 earthquake occurred in Lushan County, Ya'an City, Sichuan Province (30.3 degrees north latitude, 103.0 degrees east longitude), with a focal depth of 13 kilometers. According to the statistics of the Sichuan Provincial Civil Affairs Department at 6:00 on April 23, the earthquake caused more than 1.99 million people in 115 counties in 19 cities and prefectures in Sichuan, with 193 dead, 25 missing and 12,211 injured. The disaster killed hundreds of people. The earthquake cannot be avoided, but the damage caused by the earthquake can be minimized. This article discusses how to minimize the damage caused by security products from the perspective of disaster relief equipment.

1. Security products dedicated to earthquake relief

In the face of ruthless earthquake disasters, humans can use scientific and technological means to carry out post-disaster search and rescue, in the golden 72 hours of rescue to fight for life, to minimize losses. From the rescue of strong earthquakes that occurred in recent times, we have seen that high-tech technology allows people in disasters to see the hope of life. As for whether the security technology products can play a role in earthquake rescue, professionals are asked to give some answers.

1. Alarm products

Alarm products are generally used for early warning in advance, allowing the parties time to dispose. When an earthquake occurs, the time is short and the intensity is high. Security products can be used as an early warning mechanism product for individuals or business units. However, the conventional earthquake warning recommendations still refer to the authoritative report of the earthquake monitoring department. Alarm products are mainly the application of alarm sensors, such as vibration sensors, temperature sensors, smoke sensors and so on. When the building is slightly swayed or a fire smoke is triggered at a local location, the sensor can transmit the signal to the alarm host, and the alarm host is linked to the entire security system to trigger the alarm device in the entire system to warn personnel to escape.

2. Intelligent analysis camera

Intelligent analysis has been used in the video security industry for a long time, and the accuracy of conventional detection has also been improved a lot. Nowadays, the more frequently used intelligent analysis rules mainly include fast movement, personnel gathering, wandering, cross-border, etc. According to some premonitory knowledge before the earthquake, for example, animals will have abnormal behaviors before the earthquake. If possible, these actions can be set to intelligent analysis rules, such as rapid movement, mass gathering, etc., as a reference for abnormal phenomena. Remind the attention of relevant personnel.

3. Intelligent transportation products

Intelligent transportation products are mostly used in safe city projects. They are mainly installed in major passages and major intersections to obtain corresponding road information in a timely manner. Post-earthquake rescue after the earthquake is a life-threatening event. At present, many post-earthquake rescue work is often blocked by crowded traffic, which delays the best time to save people. Intelligent transportation products can help the command department to monitor the vehicle information of each intersection in real time, arrange the corresponding vehicle control work in time, and let the rescue personnel arrive at the scene in time to carry out rescue.

4. Thermal imaging camera

The thermal imaging camera is different from the conventional camera. The ordinary camera uses light to image, and the picture shows the picture of the surface phenomenon; while the thermal imaging camera is imaged by sensing thermal radiation, which can radiate the scene heat The difference appears in the picture, and the monitoring range of the camera is far away, which can be calculated as "km". In a large area of ​​rubble after the earthquake, information on distant people can be found in time. It can also be used to detect and detect whether there are people in the rubble to be rescued. It can also be used to dispatch the logistics trajectory of high-altitude equipment such as helicopters.

5. Remote medical rescue

After the disaster, the terrain is complex, and some seriously injured patients are too late to travel for long distances. They can only take time to heal on the spot, but in the case of limited medical resources, remote medical rescue can solve a big problem.

Telemedicine uses computers, communications, medical technology, and equipment to transmit data, text, voice, and image data over long distances to achieve "face-to-face" consultations between experts and patients, and experts and medical personnel. Telemedicine is not only a medical or clinical problem, but also includes communication network, database and other issues, and they need to be integrated into the network system. This is an application of video surveillance technology.

Second, protective equipment escort search after the earthquake

The rescue phase of the major earthquake and catastrophe should last for about 200 hours, and once the rescue is launched, it will work 24 hours a day. This is a serious challenge to the quality of rescuers and the performance of security and rescue equipment. The rescue practice of previous major earthquakes and catastrophes warned us that the development of rapid positioning technology for buried people, the improvement of the technical performance of rescue equipment, and the improvement of the personal protection technology and equipment of rescuers are important conditions for scientific, orderly, safe and efficient rescue. .

1. Life detector focuses on both

For example: in a noisy environment with constant aftershocks, the results of the audio life detector may not be accurate; in the ruins with high accumulation and deep pressure, the video life detector (snake eye) is difficult to reach The target is found inside the ruins; the radar life detector can theoretically detect and scan large-scale ruins in pieces, but the actual results are not ideal. In dangerous and toxic and harmful environments, you can choose to search for robots. However, the wire robots traveling in the collapsed ruins often lead to wire entanglement, which affects the search process; the wireless robots in the collapsed ruins due to the shielding effect of steel and other metals can cause the robots to lose control.

2. The equipment of detection instruments and early warning devices is essential

A major earthquake will cause a large number of houses to collapse, dangerous chemicals and gas leakage, and aftershocks will cause a second collapse of the house. These risk factors always threaten the life safety of rescue team members and survivors. During the rescue operation, they must be closely monitored to ensure the safety of the operation. Personal protective equipment must be sturdy (cut-proof, flame-retardant), durable, comfortable to wear, and meet the requirements of operations in harsh environmental conditions. At the same time, a certain number of chemical protection clothing and radiation protection clothing should be selected.

3. Equipped with strong communication equipment

Large earthquakes and catastrophes, such as the Wenchuan earthquake, paralyzed urban lifeline projects and disrupted communication functions. Information is the order of operations, and information is the hope of life. If the emergency communication system is not smooth, it will bring great difficulties to the command and coordination of rescue operations. The configuration of emergency communication equipment should maximize the uploading of the command and rescue information of the headquarters, and the interconnection between the team and the team, and between the team. Common solutions are maritime satellite communication system and cluster communication system.

Conclusion

For the security and rescue products, the rescue products needed in the earthquake are only a part. Today's rescue products are more widely and professionally applied, and they are more technical and targeted. Although we do not want to see disasters happen However, after the accident, the significance of the rescue work is much greater than the other. Similarly, the significance of earthquake monitoring after the earthquake has far exceeded the observation of the precursors before the earthquake. The application of security products before and after an earthquake not only brings people the development of science and technology, but in a human-oriented society, the significance of rescue for human life is even more important.