At 16:30 on August 3, a magnitude 6.5 earthquake occurred in Ludian County, Zhaotong City, Yunnan Province, with a focal depth of 12 kilometers. As of 7:00 on the 4th, the earthquake has caused 381 people to die, including 302 people in Zhaodian Ludian County, 1 person in Zhaoyang District, 66 people in Qiaojia County, and 12 people in Huize County of Qujing City. Security An industry closely related to human life safety, what role will security products play in the earthquake? From the security warning before the earthquake, the video surveillance in the earthquake rescue, the life detection, and the application of the remote disaster relief command system in the personnel rescue. Security provides technical support for the emergency relief work of the crisis. Application of Security Products in Earthquake Rescue Life Detector: Searching for buried lives The life detector works by testing the respiratory motion or movement of the subject. Due to the low frequency of breathing, generally 16 times per minute, it is possible to distinguish respiratory motion from other higher frequency motions. The principle of measuring movement is also roughly the same. Ultravision Security Systems' antenna is one of two types of Mars geodetic radar antennas designated by NASA. It is capable of capturing very faint motion with a keen algorithm, and is a safe life-saving solution. The best helper in the department. In the search and rescue of the Wenchuan Earthquake in Sichuan on May 12, 2008, experts from China and around the world used life detectors to detect and rescue tens of thousands of trapped compatriots. Different types of detector functions: 1. The infrared life detector can withstand the harsh conditions of the rescue site, and can search for life in the smoke, fire and dark environment after the earthquake. The infrared life detector detects the heat of the body of the victim. The optical system focuses the received body heat radiation energy on the infrared sensor and converts it into an electrical signal. After processing, the infrared thermal image is displayed on the monitor, thereby helping the rescuer to determine the death. The location of the person. 2. Audio Life Detector The audio life detector uses the principle of sound waves and shock waves. It uses an advanced microelectronic processor and sound/vibration sensor to collect all kinds of vibration information and detect various sound waves with air as the carrier. Vibrations with other media as the carrier, and non-target noise waves and other life detector background interference waves are filtered to quickly determine the location of the trapped person. The high-sensitivity audio life detector adopts two-stage amplification technology. The probe has a built-in frequency amplifier. The receiving frequency range is from 1 to 4000 Hz. After receiving the target signal, the host upgrades and amplifies again. In this way, it can determine whether life exists by detecting audio sound waves and vibration waves generated by weak underground, such as trapped, shouting, crawling, and tapping. 3. Radar life detector is a life detection device that integrates radar technology and biomedical engineering technology. It is mainly made up of the reflection principle of electromagnetic waves. By detecting various micro-motions caused by human life activities, information about breathing and heartbeat is obtained from these micro-motions, thereby identifying whether there is life. Radar life detector is the most advanced life detector in the world. Its active detection method is not easy to be affected by temperature, humidity, noise, on-site terrain and other factors. The continuous emission mechanism of electromagnetic signals increases its regional detection. The function. Telemedicine helps rescue after the earthquake When the road is blocked and the expert doctor cannot quickly reach the scene of the disaster area, the telemedicine consultation system breaks the limitation of the space area and timely transmits the valuable expert medical resources to the front line of the disaster area, which can provide timely support for the compatriots in the disaster area. Authoritative medical guidance. The telemedicine system is a combination of modern communication technology, medical imaging technology, multimedia technology and network transmission technology, providing long-distance medical information and services, including remote diagnosis, remote consultation and nursing, distance education, telemedicine information services and other medical activities. The telemedicine system realizes the connection between the multimedia communication system and the hospital medical information system at the business level; realizes the interconnection of video, audio and data and medical services of each alliance hospital at the functional level; realizes the operating room, medical training room, diagnosis and treatment at the application level The room, the radiology room and other departments are fully interoperable. In recent years, the state has attached great importance to telemedicine applications, and has continuously increased reforms and investments in the medical field, making telemedicine a very important vertical market for the professional audio and video industry. In the disaster relief activities, the telemedicine system fully utilized the medical support role of the rear to the front. The telemedicine satellite sites of the hospitals in the disaster areas and the mobile telemedicine equipment of the medical team have successfully conducted many telemedicine consultations. The telemedicine system also transmitted the first-hand information such as the dynamic video and audio information of the medical treatment in the disaster area directly to the command team of the Ministry of Health and the earthquake relief headquarters of the military area in the first time, so that the headquarters of the earthquake relief headquarters can be timely Understand and master the situation of first-line treatment, and play the role of information communication and online command coordination of front and rear medical treatment. Video surveillance system directs on-site rescue As an auxiliary system for earthquake relief emergency liaison command, video surveillance system, video surveillance, video conferencing and other data communication systems play an important role in reporting danger, command and rescue, emergency rescue, etc., which is irreplaceable by traditional voice communication systems. In addition to video surveillance and video conferencing systems, telematics, distance education and other converged data communication services have also played a significant role in earthquake relief. The video surveillance system provides a large amount of first-hand on-site information for emergency command during the earthquake-resistant process. In addition, the wireless video transmission system is also an assistant to the rescuer. It not only takes pictures where people cannot enter, but also returns images in real time, and can realize remote consultation when rescuing injured people. Remote sensing aircraft observation of the disaster area Remote sensing aircraft are used as remote sensing platforms to load a variety of sensors. Different windows are set on the belly to facilitate ground observation. Such as the placement of cameras for aerial photography, multi-spectral cameras and various scanners, radiometers, altimeters and so on. In addition to remote sensing and production operations, remote sensing aircraft are also used in simulation tests of various spaceborne remote sensing instruments to collect data for testing and improving onboard instruments. Multispectral aerial photographs are available from aeronautical multispectral scanners with much more information than single-band aerial photographs. The aerial side-view radar emits microwaves from the side of the aircraft. After encountering the target, its backscattered return pulse is scanned and imaged on the display and recorded on the film to produce a radar image. In the earthquake, remote sensing aircraft is equivalent to a "digital camera", capable of continuous real-time shooting of local disasters through aerial work.
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