ACID - Accelerated Contraband Identification by Diffraction

ACID - 通过衍射加速违禁品识别

• 批准号: ST/N006534/1
• 负责人: Paul Evans
• 金额: $ 13.83万
• 依托单位: Nottingham Trent University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FN006534%2F1
• 关键词: ACID; Accelerated; Contraband; Identification; Diffraction

ACID will combine two disruptive technologies to produce the fastest and most reliable automatic contraband identification security scanner. The innovative ACID scanner uses a unique, patented X-ray diffraction method from Nottingham Trent Universities (NTU) and Cranfield (CU) Universities and a world leading energy resolving X-ray detector from STFC to be able to identify threat and contraband materials such as drugs and explosives.The ACID technology is needed as current state of the art security scanners cannot discriminate robustly threat and contraband materials from everyday items. This leads to high false alarm rates, manual secondary scans/searches, which cause bottlenecks at security checkpoints and still do not identify many contraband items [1]. The current methods of measuring the transmitted X-rays through a cluttered inspection volume to estimate the density and average atomic numbers of the materials that might be present do not provide sufficient sensitivity or specificity. ACID will measure diffracted X-ray flux to enable the calculation of the spacing between atomic planes or d spacings to provide a unique "chemical fingerprint" to identify material phase.X-ray diffraction is a well-established technique that has been used for many years to characterise materials in the laboratory environment. Until now, X-ray diffraction has been a relatively slow technique, which has prohibited its use in areas such as security screening. ACID overcomes these limitations by using patented focal construct geometry (FCG) that provides an "amplified" diffraction signal and the HEXITEC energy resolving imaging detector to provide a high rate measurement over the entire diffraction signal range of interest whilst using only conventional X-ray sources. This unique combination of technique and technology is essential to provide an accurate, fast, cost-effective and automatic security scanner that can identify contraband and threat materials.The ACID project will deliver a scanner to automatically identify contraband in postal and personal items such as phones and laptops. This will provide a platform technology that can address immediately the increasing need to screen such items at secure facilities, large events and soft urban targets such as railway stations. The project partners include Halo X-ray Technologies Ltd (a spin out of NTU and CU) who will take this ACID scanner to market and develop a range of automatic contraband identification scanner products. There is a clear market drive to have technologies such the ACID scanner deployed as we move into the next decade. The CLASP funding is essential to combine two areas of UK expertise and enable the ACID technology to be developed to a sufficiently mature level to address this time limited market. The automated ACID scanner will not only make security screening easier, faster and more pleasant for the public it will importantly meet the ever increasing need to make our borders, cities and buildings safer by identifying threat and contraband materials.[1]http://www.theguardian.com/us-news/2015/jun/02/us-airport-security-raised-after-fake-weapons-missed-by-screenings

ACID将结合两种颠覆性技术，生产最快和最可靠的自动违禁品识别安全扫描仪。创新的ACID扫描仪使用诺丁汉特伦特大学（NTU）和克兰菲尔德大学（CU）的独特专利x射线衍射方法，以及STFC的世界领先的能量分辨x射线探测器，能够识别威胁和违禁品，如毒品和爆炸物。ACID技术是必需的，因为目前最先进的安全扫描仪不能从日常物品中强有力地区分威胁和违禁品。这导致误报率高，人工二次扫描/搜索，这在安全检查站造成瓶颈，仍然无法识别许多违禁品。目前的方法是通过一个杂乱的检查体积来测量透射的x射线，以估计可能存在的材料的密度和平均原子序数，但这种方法没有提供足够的灵敏度和特异性。ACID将测量衍射x射线通量，以便计算原子平面之间的间距或d间距，以提供独特的“化学指纹”来识别材料相。x射线衍射是一种成熟的技术，多年来一直用于实验室环境中表征材料。到目前为止，x射线衍射一直是一种相对缓慢的技术，因此被禁止在安全检查等领域使用。ACID克服了这些限制，使用专利的焦构造几何（FCG），提供“放大”的衍射信号和HEXITEC能量分辨成像探测器，在仅使用传统x射线源的情况下，在整个感兴趣的衍射信号范围内提供高速率测量。这种独特的技术和技术组合对于提供准确，快速，经济高效的自动安全扫描仪至关重要，可以识别违禁品和威胁材料。该项目将提供一个扫描仪，自动识别邮政和个人物品中的违禁品，如电话和笔记本电脑。这将提供一种平台技术，可以立即解决在安全设施、大型活动和火车站等城市软目标中对此类物品进行筛查的日益增长的需求。该项目的合作伙伴包括Halo x射线技术有限公司（南洋理工大学和中大的分拆公司），他们将把这种ACID扫描仪推向市场，并开发一系列自动违禁品识别扫描仪产品。随着我们进入下一个十年，有一种明显的市场动力来部署像ACID扫描仪这样的技术。CLASP的资金对于结合英国两个领域的专业知识，使ACID技术发展到足够成熟的水平，以应对这个时间有限的市场至关重要。自动酸性扫描仪不仅将使安全检查更容易，更快捷，更愉快的公众，它将重要地满足日益增长的需求，使我们的边界，城市和建筑物更安全，识别威胁和违禁品。[1]http://www.theguardian.com/us-news/2015/jun/02/us-airport-security-raised-after-fake-weapons-missed-by-screenings