The latest biochemical, dielectric, ultra-low frequency conduction and technical heartbeat induction life detector in the world finds the position of the "living" by sensing the electric field (generated by the heart) generated by ultra-low frequency radio waves emitted by the human body. Equipped with a special radio wave filter, it can filter out the frequencies of other animals, such as dogs, cats, cows, horses and pigs, which are different from human beings, so that the life detector can only sense the electric field generated by the frequencies emitted by human beings. The instrument is equipped with two different detection poles. The detection distance of the long-distance detection rod can reach 500 meters, and the short-distance detection rod can reach 20 meters. The ultra-low frequency electric field emitted by human body can pass through reinforced concrete walls and steel plates. When the instrument encounters the above obstacles, the detection distance will be reduced, but as long as the operator approaches the detection site forward, the human target to be searched can still be accurately found. After the target locking function of the instrument detects the electric field generated by the ultra-low frequency emitted by the human body, the detection rod will automatically lock the electric field, and when the human body moves, the detection rod will also move with it. In addition, it is equipped with a laser spot to provide the operator with the direction of the probe.
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Range-type, detecting targets insensitive to range.
No animal has been detected except the human body. Vertical detection angle: 60 degrees up and down the open space [; 80 degrees in the building, 40 degrees up and down.
Horizontal detection angle
Plus or minus 2 degrees, 2 degrees each.
Target locking function
When detecting the electric field generated by the ultra-low frequency radio waves emitted by the living heart, the probe will automatically lock the electric field, and the probe will follow the movement operation mode of the human body when it moves: hand-held type.
work pattern
There is no need for power supply during the day, and the laser spot is used to provide the direction for the operator to find the probe at night. Equipped with American standard triple A laser spot. Under normal circumstances, the battery can be used for more than 12 hours.
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Life tester
The basic characteristics of life detector include: real-time moving detection, which can penetrate concrete, bricks, snow, ice and mud; Detecting movement and detecting the distance of people in distress; Able to work in all kinds of weather conditions; Intuitive and easy to learn, without a lot of special training; Low requirements for power supply energy; Almost no system maintenance is needed; Firmware programs can be upgraded through wireless or wired networks; There is no need to drill holes, lay cables and mute the environment, so the search and rescue work is simple and easy. In the race against time rescue work, life detectors can help search and rescue personnel find survivors in distress quickly, accurately and safely, thus winning valuable time for rescue work. Life detectors can only detect a small area by probing into the cracks in the ruins, while earthquake detection dogs can search around in a larger area. The life detector is actually a breathing and motion detector. The radar signal transmitter continuously emits electromagnetic signals and scans a certain space. The receiver continuously receives the reflected signal and performs algorithmic processing on the returned signal. If the detected person remains still, the return signal is the same. If the target is moving, the signal is different. By comparing the signals received in different time periods with other algorithms, we can judge whether the target is moving. The working principle of life detector is to detect the breathing movement or action of the detected person. Because of the low frequency of breathing, which is generally 1 2 times per second, breathing movement can be distinguished from other higher frequency movements. The principle of measuring motion is basically the same. The antenna of Supervisory Safety System Company is one of the two kinds of ground penetrating radar antennas of Mars probe designated by NASA, which can capture very weak motion very sensitively, and with powerful algorithm processing, it is the best helper for safety and life-saving departments.
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Life detectors can't determine how many people there are. Only detectable signs of life exist.
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Life tester
In the search and rescue of Wenchuan earthquake in Sichuan on May 12, 2008, experts from China and other countries used life detectors to search and rescue tens of thousands of trapped compatriots. Among them, the search and rescue of the compatriots buried for the longest time exceeded 2 16 hours! Life detector played an indelible role in the search and rescue of Wenchuan earthquake in Sichuan! The life detector finds the position of the "living" by sensing the electric field (generated by the heart) generated by ultra-low frequency radio waves emitted by the human body. Equipped with a special radio wave filter, it can filter out the frequencies of other animals, such as dogs, cats, cows, horses and pigs, which are different from human beings, so that the life detector can only sense the electric field generated by the frequencies emitted by human beings. The instrument is equipped with two different detection poles. The detection distance of the long-distance detection rod can reach 500 meters, and the short-distance detection rod can reach 20 meters. The ultra-low frequency electric field emitted by human body can pass through reinforced concrete walls and steel plates. When the instrument encounters the above obstacles, the detection distance will be reduced, but as long as the operator approaches the detection site forward, the human target to be searched can still be accurately found. After the target locking function of the instrument detects the electric field generated by the ultra-low frequency emitted by the human body, the detection rod will automatically lock the electric field, and when the human body moves, the detection rod will also move with it. In addition, it is equipped with a laser spot to provide the operator with the direction of the probe. With the help of computer and continuous training, this instrument can find human targets more accurately and quickly than other life detectors, and its application range is quite wide: first, rescuers can find victims buried in rubble in dumped buildings. Second, police officers can detect the positions of gangsters and hostages for reference when tackling difficulties. Three, the coast guard, customs, border and port security personnel can detect whether there are stowaways on the mezzanine of containers and vehicles. The long-distance antenna can detect the landing position of stowaways, and the search distance is 500 meters.
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Infrared life detector
Life tester
Any object will produce infrared radiation as long as its temperature is above absolute zero, and the human body is also a natural infrared radiation source. But the infrared radiation characteristics of human body are different from the surrounding environment. The infrared life detector uses the difference between them to separate the target to be searched from the background through imaging. The central wavelength of human infrared radiation energy is 9.4μm, and the infrared radiation range of human skin is 3 ~ 50 μ m, of which 8 ~ 14 μ m accounts for 46% of the total radiation energy of human body. This wavelength is an important technical parameter for designing human infrared detectors. The infrared life detector can withstand the harsh conditions of the rescue site and search for life in the smoke, fire and dark environment after the earthquake. The infrared life detector detects the heat of the victim's body, and the optical system focuses the received thermal radiation energy of the human body on the infrared sensor and converts it into an electrical signal. After processing, the monitor displays infrared thermal images to help rescuers locate the victims. Infrared detection equipment was first used in the military, and it has been continuously improved with the development of science and technology. From 65438 to 0988, the full-function thermal imager introduced by AGA company in Sweden can integrate temperature measurement, modification, analysis, image acquisition and storage, and a portable full-function thermal imager is developed by using this technology, which is mainly used for military investigation. With the development of society, countries begin to pay attention to the development of technology and equipment to reduce casualties caused by various disasters, and infrared detection technology has also changed from military to rescue instrument-infrared life detector.
audio life detection instrument
The audio life detector applies the principles of sound wave and vibration wave, and adopts advanced microelectronic processor and sound/vibration sensor to collect all-round vibration information, which can detect all kinds of sound waves with air as the carrier and vibrations with other media as the carrier, and combine with other life detectors to detect non-target noise waves.
Filter out the background interference wave, and then quickly determine the position of the trapped person. The high-sensitivity audio life detector adopts two-stage amplification technology. The probe has a built-in frequency amplifier, and the receiving frequency range is 1 ~ 4000 Hz. After the host receives the target signal, it will be upgraded and amplified again. In this way, it can judge the existence of life by detecting the weak audio sound waves and vibration waves generated by trapped people, such as moaning, shouting, crawling and knocking. Audio life detector is a detection system based on human-computer interaction, including signal detection, monitoring, selection, storage and processing. The key technologies in the development process include: the development of high sensitivity sensor; By studying the mathematical models of acoustic wave and vibration wave, the criterion of signal validity and the position of effective signal source are determined. Because the audio life detector is an instrument that passively receives audio signals and vibration signals, it is necessary to find a gap in the ruins to extend into the probe during rescue, which is easily affected by the noise at the scene and the detection speed is slow.
Radar life detector
Radar life detector is a kind of life detection device which combines radar technology and biomedical engineering technology. It is mainly made by using the reflection principle of electromagnetic waves. By detecting all kinds of micro-movements caused by human life activities, we can get information about breathing and heartbeat from these micro-movements, so as to identify whether there is life or not. Radar life detector is the most advanced life detector in the world at present. Its active detection mode makes it not easily affected by temperature, humidity, noise, site topography and other factors. The continuous emission mechanism of electromagnetic signals further increases its area detection function. Ultra-wide spectrum radar life detector is the most advanced one of this type. It has strong penetrating ability, and can detect the life characteristics of buried creatures, such as breathing and body movement, and can accurately measure the distance and depth of buried creatures. Strong anti-interference ability, not affected by environmental temperature, hot objects and sound interference, and broad application prospects. The relative bandwidth (the ratio of signal bandwidth to central frequency) of UWB radar life detector is relatively large, generally greater than 25%. The life parameters of human body are tested by pulsed microwave beam. Because of the existence of human life activities (breathing, heartbeat, intestinal peristalsis, etc. ), the repetition period of echo pulse sequence reflected by human body changes. If the echo pulse sequence reflected by the human body is demodulated, integrated, amplified and filtered, and input into the computer for data processing and analysis, the parameters related to the measured human life characteristics can be obtained. Ultra-wide spectrum radar life detector has the advantages of strong penetration, accurate ranging, strong anti-interference ability, strong multi-target detection ability and high detection sensitivity. The detection distance can reach 30 ~ 50m, and the thickness of solid brick wall can reach more than 2m. It can detect people from several rooms and has the function of automatic human identification, so it has broad application prospects in the field of life detection. Compared with infrared life detector and audio life detector, it is more practical, so it has become a research hotspot. The development of life detection technology will certainly expand its application scope, such as non-contact life monitoring in medicine, which will save lives and benefit mankind in more ways.
Dkl lifeguard life detector
Dkl lifeguard life detector is the most advanced search and rescue instrument in the world at present. It is lightweight, only about 1 kg. It is hand-held and easy to carry and operate, and its performance is superior to any other high-tech search and rescue products. It has been widely used by the military, customs, sea patrol, fire protection, safety, rescue, aerospace and other government departments in advanced countries in the world. This product was developed by American high-tech companies combined with the world's most advanced biochemical, dielectric, ultra-low frequency conduction and DNA technologies, and applied for a number of technical patents. This model is the most mature product designed by DKL company at present. Lifeguard life detector provides rescuers with the ability to confirm whether there are survivors when they enter the search and rescue site, so as to reduce the danger of rescuers in search and rescue and detect survivors behind any obstacles at the first time. It detects the direction of the weak heartbeat medium field at the far end through passive reception, and only detects the surviving human beings without interference from other animals. It can cross various obstacles such as steel plates, cement, composite materials and trees. The detection distance can reach 500 meters in the open space and 1 km above the water surface. After special treatment, it is suitable for all kinds of bad weather conditions, with simple maintenance and extremely low failure rate. If it is equipped with a portable computer and special artificial intelligence software, it can generate detected image and sound information, further improving the operator's discrimination ability. At the same time, it can also reduce the time for novice training. Lifeguard TM life detector application scope: ◆ Haiphong: search for places where illegal stowaways may hide, such as sea surface, coast, mountains, ports, empty houses, cabins, containers, etc. ◆ Rescue: Search for survival targets such as rivers, lakes, mountains, earthquake landslides, mine explosions, fire scenes, etc., and confirm whether there are survivors. It can also be used to track the life safety of search and rescue personnel. ◆ Searching and tracking the dangerous areas of police/security/military and various complex obstacle areas can find the target as early as possible and reduce casualties. ◆ It can be used together with other life search instruments, such as search and rescue dogs, sound/image detectors, infrared/thermal imaging detectors, etc. , greatly improving the overall search and rescue effect.
Optical life detector
Also known as "snake eye life detector", it is an instrument that uses the reflection of light to detect life. The main body of the instrument is very flexible, like a snake skin tube for sewers, which can twist freely in the ruins. There is a tiny probe in front of the instrument, which can go deep into tiny gaps to detect, similar to a camera instrument, and send information back. Rescuers and observers can clearly see the situation in the depths of the ruins.
Acoustic vibration life detector
The acoustic vibration life detector looks for life by identifying the sounds made by trapped people. This instrument has three to six "ears"-vibration sensors, which can judge the specific location of survivors by approximate method according to the subtle difference of the sound sequence heard by each "ear". Sound is the easiest for it to recognize, because the designer has fully studied the human vocal frequency. If the survivors can't speak, they can tap with their fingers and make a small sound. Even if it is buried under a fairly tight large area of concrete floor, the detector can detect it as long as the heart is still beating weakly.