Application of Life detection device in Disaster Relief

Life detection device is an emergency rescue equipment that detects and locates buried survivors using audio and video probes.  This device can capture sounds such as shouts and groans emitted by trapped individuals and is used in search and rescue operations at disaster sites such as earthquakes and landslides.

Life detection device is a professional device specifically designed for search and rescue in disaster areas. Based on acoustic detection principles, it captures sound signals emitted by trapped individuals through high-sensitivity sensors. Its main components include a sound collection probe, a signal processing system, and a sound playback device. The design fully considers the complex environmental characteristics of disaster sites, providing high environmental adaptability.

At a disaster rescue site, rescue personnel use this device to systematically survey the rubble area. During operation, the sound collection probe is inserted into crevices in the rubble or pre-set detection holes. Multiple high-sensitivity microphones built into the probe can collect extremely weak sound signals. These signals are processed with noise reduction and amplification before being transmitted to rescue personnel through headphones for analysis and identification. The device also includes a video probe to simultaneously obtain visual information of the trapped area.

The application scenarios of this device mainly include earthquake rubble, building collapse sites, mine accident areas, and avalanche burial areas. In these disaster environments, the device can effectively detect sounds of life signs such as shouts, knocking, and groans from trapped individuals. Its detection depth can reach tens of meters, with specific performance depending on the site's medium conditions and ambient noise level. Under ideal conditions, the device can identify human voice signals within a 30-meter range.

Modern Life detection device typically features multi-channel audio acquisition capabilities. Multiple probes can be deployed simultaneously at different detection points, and by comparing and analyzing the intensity of sound signals received at each point, the direction of the sound source can be initially determined. Some high-end models are also equipped with a sound source localization system, which can accurately determine the location coordinates of the trapped person by calculating the time difference of sound arrival at different probes.

In actual rescue operations, the use of this device requires following standard operating procedures. First, a preliminary assessment of the rescue area is needed to determine possible areas where life may exist; then, a systematic detection is carried out according to a grid-like deployment plan; after detecting suspicious signals, the sound source location is confirmed through multi-point cross-verification. Throughout the detection process, the site should be kept quiet to avoid environmental noise interfering with the detection results. The technical features of this device are mainly reflected in the following aspects: it adopts a special noise reduction algorithm that can effectively filter out ambient noise; it has a sound gain adjustment function, allowing for amplification of sound signals in specific frequency bands as needed; it has a built-in data recording system that can save audio data during the detection process for subsequent analysis; some models also support multi-device networking for wider-area synchronous monitoring.

Maintenance and upkeep of the Life detection device also have specific requirements. The device needs regular sensitivity calibration to ensure stable detection performance; it should be stored in a dry environment to prevent the sensor from getting damp; after use, the probe should be cleaned promptly to prevent dust accumulation from affecting sound acquisition. These maintenance measures are crucial for maintaining the device's optimal working condition.

In emergency rescue systems, the Life detection device plays an irreplaceable role. Its rapid deployment and real-time detection capabilities provide critical technical support for search and rescue operations during the golden rescue period. With continuous technological advancements, the new generation of devices continues to improve in terms of detection range, positioning accuracy, and anti-interference capabilities, providing more reliable technical support for disaster relief efforts.