Application Introduction of Targeted Biological Evidence Search and Discovery System (Multi-band Laser Evidence Search Instrument) in Criminal Investigation Technology and Forensic Identification
Global site URL：https://xilankeji.en.alibaba.com
The Targeted Biological Evidence Search and Discovery System (Multi-band Laser Evidence Search Instrument) is a core portable optical forensics equipment in the field of criminal investigation on-site inspection and forensic identification. Based on specific wavelength laser excitation technology, it is specially designed for efficiently searching and locating potential and trace biological evidence at the scene. Its core value lies in quickly revealing biological traces and chemically treated traces that are difficult to be directly found by the human eye through high-purity dual-band laser excitation, solving the pain points of low efficiency and easy omission of trace exhibits in traditional evidence search. It provides accurate and efficient technical support for criminal investigation evidence collection and forensic identification exhibit fixation, ensures the standardization and integrity of evidence extraction, and assists in the accurate detection of cases and judicial justice.
The core characteristics of the system are accurately adapted to the needs of criminal investigation and forensic identification, providing comprehensive support for the professional upgrading of physical evidence identification: it integrates 450nm blue laser and 530nm green laser dual-band lasers with sufficient power, which can effectively excite the intrinsic fluorescence of biological fluids such as blood stains and seminal stains, and enhance the contrast of potential fingerprints, footprints and other traces treated with fluorescent reagents, covering various evidence search needs; the precision optical design combined with a sturdy and portable body ensures clear imaging and easy on-site holding operation, adapts to complex inspection environments, and can quickly complete multi-scene evidence search; the intelligent control and long-lasting battery life design ensure the continuity of on-site inspection, and the safety protection configuration complies with professional operation specifications, avoiding injury to inspectors, and ensuring the compliance of the evidence collection process, providing a legal and effective exhibit basis for subsequent forensic identification.
Combined with criminal investigation practice and forensic identification cases, its application value is particularly prominent: Case 1, in a burglary, robbery and homicide case, the on-site environment was complex and traces were easily damaged. The police used the system to carry out inspection, quickly excited and located trace blood stains in the hidden corner of the wall through blue laser, and at the same time enhanced the potential fingerprints treated with fluorescent reagents on the on-site ground, accurately extracting the biological exhibits left by the suspect, which provided key physical evidence support for suspect identification and case characterization in forensic identification. Case 2, in the on-site inspection of a sexual assault case, the system clearly revealed trace seminal stain traces on the clothes through green laser excitation, and completed positioning and preliminary fixation without large-scale damage to the exhibits, effectively avoiding the loss of trace physical evidence, providing complete and effective exhibits for subsequent DNA identification and trace comparison, and greatly improving the efficiency of forensic identification.
In summary, the system is suitable for various scenarios such as criminal investigation on-site inspection and laboratory trace physical evidence inspection, and can be widely applied in public security criminal investigation, forensic identification and other units. It can not only quickly find potential trace biological evidence and improve the efficiency of on-site inspection, but also ensure the standardization and integrity of evidence extraction, provide reliable exhibit support for forensic identification, solve the technical problems of trace evidence search and fixation, and is an indispensable professional portable forensics equipment in the field of criminal investigation technology and forensic identification.