Audio Life Detector

Application area:
1. It is suitable for earthquakes, collapses, rubble under the collapse of buildings, and is suitable for fire protection, municipal, mine rescue and other institutions.
2. Applicable to limited space and conventional methods Rescue workers are inaccessible for rescue work, such as feedback on collapsed buildings, deep wells, mines, etc., for victims trapped in confined spaces; deformed cars, planes, ships, trains crashes and the naked eye Difficult to see places, sewers, mines and underground locations to locate missing persons.

working principle
The Audio Life Detector is an acoustic detector designed to detect and locate survivors buried in collapsed structures due to earthquakes, explosions, landslides, mine accidents or building depressions. The audio life detector uses a special microelectronic processor to identify tiny vibrations that propagate in air or solids. It is suitable for searching for survivors trapped under concrete, rubble, or other solids. It can accurately identify sounds from survivors, such as shouting. , tapping, scoring, or tapping. At the same time, you can filter the surrounding background noise. After the disaster, the search for survivors is a race against time. Life detectors can help rescuers locate survivors who have moved, struck or called for help. Life detectors can detect these vital signals through special sensors that sense subtle vibrations. Experience shows that survivors buried under the collapsed buildings can often hear the rescue workers, but rescue workers cannot hear them. Concrete and gravel will block all sound waves. However, if the survivors can strike, scratch, or move, the collapsed structure can still effectively deliver these sounds. The ears of these voices cannot be heard, but they can be heard by electronic hearing devices.

1. Double input improves sensor flexibility. Use two sound search probes at the same time to get a stereoscopic comparison.
2. The audio line recording function can record the last five minutes of sound in order to replay the sound in contrast.
3. Filters are used to reduce noise.
4. In order to form a stereo contrast in the earphone, two channels may be selected to form stereo sound.
5. The display panel can simultaneously display the relative strengths of the six signals and can accurately identify the strongest signal. The peak value of any signal bar indicates that the sensor reaches the maximum amplitude.
6. The battery can also be replaced or used rechargeable lithium batteries, and the detector's ribbon battery pack, making the detector and thousands of ambulance crews around the world standing in the same rank.
7. The new, improved headphones can communicate in both directions through audio monitoring probes. At the same time, a contact intercom device is provided to facilitate communication between the two authors.
8. The sound sensor can be connected to the sensor cable or it can be equipped with a telescope probe that can penetrate the interior of the rubble layer.
9. Omni-directional audio sensor, detection frequency: 1-3000Hz It can receive 2, 4 and 6 sensor information at the same time, and can simultaneously display any two sensor information10. Equipped with a small walkie-talkie to talk to survivors.