便携式超宽光谱物证提取与检验工作站刑侦与司法鉴定应用介绍
作者：毕思特科技 来源：毕思特科技 浏览数：14 发布时间：2026/3/17 12:00:46
便携式超宽光谱物证提取与检验工作站刑侦与司法鉴定应用介绍
便携式超宽光谱物证提取与检验工作站，是集现场多光谱物证成像取证、文书与痕迹综合检验于一体的高度集成化刑事技术核心装备，专为犯罪现场勘查、痕迹物证发现、文件真伪鉴别及司法鉴定日常检验打造，可显现在常规白光下肉眼无法辨识的潜在痕迹与特征，实现从痕迹发现、增强、记录、分析到司法鉴定报告出具的全流程闭环，是提升现场物证检出率、保障鉴定结论科学性的关键刑事技术装备。
设备基于多光谱成像与光致发光原理，集成覆盖 254nm 短波紫外至近红外的全波段激发光源，搭载低噪声科学级 CMOS 传感器与 10 组可更换窄带滤光片，利用不同物质的光学特性差异，精准捕获微弱荧光与反射光信号，将隐藏的痕迹特征可视化、量化。设备主机仅约 1kg，单兵便携操作，内置专业图像处理工具与符合规范的司法鉴定文书自动生成系统，解决了传统物证检验设备功能单一、现场适配性差、潜在痕迹检出率低、检验流程与文书出具脱节的行业痛点。
在刑侦与司法鉴定实战中，设备核心应用覆盖四大领域：一是痕迹检验领域，实现潜在生物斑迹、汗潜指纹、灰尘足迹的快速显现与固定，精准定位深色织物、复杂背景上的精斑、唾液斑等体液痕迹，增强各类客体上的潜在指纹、足迹反差，为命案、性侵案等重大案件提供关键物证线索；二是文件检验领域，穿透显现被化学消退、刮擦掩盖的原始字迹，辅助印章印文朱墨时序判断，核验证件、票据的防伪特征，为合同诈骗、伪造变造公文证件等案件提供核心鉴定依据；三是微量与法医物证检验，快速筛查区分射击残留物、纤维、油漆碎片等微量物证，清晰记录皮肤上陈旧性皮下淤血、已去除纹身等特征，辅助伤情鉴定与案件线索挖掘；四是现场勘查与证据固定，实现大范围现场痕迹快速扫描搜索，完成物证标准化比例照相与全流程数据管理，确保证据链的完整性与合规性。
实战应用案例：1. 某性侵杀人案，现场深色床单上的体液斑迹肉眼完全无法辨识，传统白光拍照未获取有效特征，技术人员使用本设备通过 365nm 长波紫外激发，成功定位并清晰固定精斑痕迹，为后续 DNA 检验锁定精准靶点，顺利获取嫌疑人 STR 分型，为案件侦破提供了核心物证支撑；2. 某大额合同诈骗案，嫌疑人使用化学消退剂篡改合同核心条款，常规检验手段无法还原原始内容，经本设备短波紫外与红外光多波段检验，清晰显现被消退的原始字迹，同时通过多光谱成像分析印文与字迹的交叉时序，锁定文件伪造事实，为案件定案提供了关键科学依据。
本工作站将实验室级多光谱检验能力前置至犯罪现场，实现了从痕迹发现到司法鉴定报告出具的全流程一体化作业，大幅提升了潜在物证的检出率与检验工作效率，其输出的标准化、可追溯影像数据与鉴定文书，为案件侦查、证据固定与司法诉讼提供了坚实的科学支撑，是各级公安刑侦、司法鉴定机构现场勘查与实验室检验的核心必备装备。
Application Introduction of the Portable Ultra-Wide Spectrum Physical Evidence Extraction and Inspection Workstation in Criminal Investigation and Forensic Identification
The Portable Ultra-Wide Spectrum Physical Evidence Extraction and Inspection Workstation is a highly integrated core criminal technical equipment integrating on-site multispectral physical evidence imaging and evidence collection, as well as comprehensive examination of documents and traces. It is specially developed for crime scene investigation, trace physical evidence discovery, document authenticity identification and routine inspection of forensic identification. It can visualize latent traces and features undetectable to the naked eye under conventional white light, and realize a full-process closed loop from trace discovery, enhancement, recording, analysis to the issuance of forensic identification reports. It is a key criminal technical equipment to improve the detection rate of on-site physical evidence and ensure the scientificity of identification conclusions.
Based on the principles of multispectral imaging and photoluminescence, this equipment integrates a full-band excitation light source covering 254nm short-wave ultraviolet to near-infrared, and is equipped with a low-noise scientific-grade CMOS sensor and 10 sets of replaceable narrow-band optical filters. Utilizing the differences in optical properties of different substances, it accurately captures weak fluorescence and reflected light signals, and visualizes and quantifies hidden trace features. The main unit of the equipment is only about 1kg, which can be operated portably by a single operator. It has a built-in professional image processing tool and an automatic generation system for forensic identification documents complying with industry specifications, addressing the industry pain points of conventional physical evidence inspection equipment, such as single function, poor on-site adaptability, low detection rate of latent traces, and disconnection between inspection process and document issuance.
In the practical operation of criminal investigation and forensic identification, the core applications of the equipment cover four major areas:
- Trace Examination: It realizes rapid visualization and fixation of latent biological stains, sweat latent fingerprints and dust footprints, accurately locates body fluid stains such as seminal stains and saliva stains on dark fabrics and complex backgrounds, enhances the contrast of latent fingerprints and footprints on various objects, and provides key physical evidence clues for major cases such as homicide and sexual assault cases.
- Questioned Document Examination (QDE): It penetrates and visualizes the original handwriting covered by chemical erasure or scraping, assists in the judgment of the temporal sequence of stamping and writing, verifies the anti-counterfeiting features of certificates and bills, and provides core identification basis for cases such as contract fraud and forgery of official documents and certificates.
- Trace Evidence and Forensic Biological Evidence Examination: It rapidly screens and distinguishes trace evidence such as gunshot residues, fibers and paint chips, clearly records features such as old subcutaneous congestion on the skin and removed tattoos, and assists in injury identification and case clue mining.
- Crime Scene Investigation and Evidence Fixation: It realizes rapid scanning and search of traces in a wide range of scenes, completes standardized proportional photography of physical evidence and full-process data management, and ensures the integrity and compliance of the evidence chain.
Practical Forensic Application Cases:
- In a sexual assault homicide case, the body fluid stains on the dark bed sheet at the crime scene were completely undetectable to the naked eye, and no valid features were obtained by conventional white light photography. Forensic technicians used this equipment to successfully locate and clearly fix the seminal stain traces through 365nm long-wave ultraviolet excitation, which locked the accurate target for subsequent DNA testing. The STR profile of the suspect was successfully obtained, providing core physical evidence support for the detection of the case.
- In a high-value contract fraud case, the suspect used chemical erasing agents to alter the core terms of the contract, which could not be restored by conventional inspection methods. Through multi-band inspection with short-wave ultraviolet and infrared light of this equipment, the original erased handwriting was clearly visualized. At the same time, the cross sequence of the seal impression and handwriting was analyzed through multispectral imaging, which confirmed the fact of document forgery and provided key scientific basis for the verdict of the case.
This workstation extends the laboratory-level multispectral inspection capability to the crime scene, realizes the integrated operation of the whole process from trace discovery to the issuance of forensic identification reports, and greatly improves the detection rate of latent physical evidence and the efficiency of inspection work. The standardized and traceable image data and identification documents it outputs provide solid scientific support for case investigation, evidence fixation and judicial proceedings. It is a core necessary equipment for criminal investigation and forensic identification institutions at all levels for on-site investigation and laboratory inspection.